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[SCSI] lpfc 8.3.10: Added round robin FCF failover
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / scsi / lpfc / lpfc_hbadisc.c
blobc555e3b7f202cf25dc8683b7363a2a1a0d9dcd50
1 /*******************************************************************
2 * This file is part of the Emulex Linux Device Driver for *
3 * Fibre Channel Host Bus Adapters. *
4 * Copyright (C) 2004-2009 Emulex. All rights reserved. *
5 * EMULEX and SLI are trademarks of Emulex. *
6 * www.emulex.com *
7 * Portions Copyright (C) 2004-2005 Christoph Hellwig *
8 * *
9 * This program is free software; you can redistribute it and/or *
10 * modify it under the terms of version 2 of the GNU General *
11 * Public License as published by the Free Software Foundation. *
12 * This program is distributed in the hope that it will be useful. *
13 * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND *
14 * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, *
15 * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE *
16 * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *
17 * TO BE LEGALLY INVALID. See the GNU General Public License for *
18 * more details, a copy of which can be found in the file COPYING *
19 * included with this package. *
20 *******************************************************************/
21
22 #include <linux/blkdev.h>
23 #include <linux/pci.h>
24 #include <linux/kthread.h>
25 #include <linux/interrupt.h>
26
27 #include <scsi/scsi.h>
28 #include <scsi/scsi_device.h>
29 #include <scsi/scsi_host.h>
30 #include <scsi/scsi_transport_fc.h>
31
32 #include "lpfc_hw4.h"
33 #include "lpfc_hw.h"
34 #include "lpfc_nl.h"
35 #include "lpfc_disc.h"
36 #include "lpfc_sli.h"
37 #include "lpfc_sli4.h"
38 #include "lpfc_scsi.h"
39 #include "lpfc.h"
40 #include "lpfc_logmsg.h"
41 #include "lpfc_crtn.h"
42 #include "lpfc_vport.h"
43 #include "lpfc_debugfs.h"
44
45 /* AlpaArray for assignment of scsid for scan-down and bind_method */
46 static uint8_t lpfcAlpaArray[] = {
47 0xEF, 0xE8, 0xE4, 0xE2, 0xE1, 0xE0, 0xDC, 0xDA, 0xD9, 0xD6,
48 0xD5, 0xD4, 0xD3, 0xD2, 0xD1, 0xCE, 0xCD, 0xCC, 0xCB, 0xCA,
49 0xC9, 0xC7, 0xC6, 0xC5, 0xC3, 0xBC, 0xBA, 0xB9, 0xB6, 0xB5,
50 0xB4, 0xB3, 0xB2, 0xB1, 0xAE, 0xAD, 0xAC, 0xAB, 0xAA, 0xA9,
51 0xA7, 0xA6, 0xA5, 0xA3, 0x9F, 0x9E, 0x9D, 0x9B, 0x98, 0x97,
52 0x90, 0x8F, 0x88, 0x84, 0x82, 0x81, 0x80, 0x7C, 0x7A, 0x79,
53 0x76, 0x75, 0x74, 0x73, 0x72, 0x71, 0x6E, 0x6D, 0x6C, 0x6B,
54 0x6A, 0x69, 0x67, 0x66, 0x65, 0x63, 0x5C, 0x5A, 0x59, 0x56,
55 0x55, 0x54, 0x53, 0x52, 0x51, 0x4E, 0x4D, 0x4C, 0x4B, 0x4A,
56 0x49, 0x47, 0x46, 0x45, 0x43, 0x3C, 0x3A, 0x39, 0x36, 0x35,
57 0x34, 0x33, 0x32, 0x31, 0x2E, 0x2D, 0x2C, 0x2B, 0x2A, 0x29,
58 0x27, 0x26, 0x25, 0x23, 0x1F, 0x1E, 0x1D, 0x1B, 0x18, 0x17,
59 0x10, 0x0F, 0x08, 0x04, 0x02, 0x01
60 };
61
62 static void lpfc_disc_timeout_handler(struct lpfc_vport *);
63 static void lpfc_disc_flush_list(struct lpfc_vport *vport);
64 static void lpfc_unregister_fcfi_cmpl(struct lpfc_hba *, LPFC_MBOXQ_t *);
65
66 void
67 lpfc_terminate_rport_io(struct fc_rport *rport)
68 {
69 struct lpfc_rport_data *rdata;
70 struct lpfc_nodelist * ndlp;
71 struct lpfc_hba *phba;
72
73 rdata = rport->dd_data;
74 ndlp = rdata->pnode;
75
76 if (!ndlp || !NLP_CHK_NODE_ACT(ndlp)) {
77 if (rport->roles & FC_RPORT_ROLE_FCP_TARGET)
78 printk(KERN_ERR "Cannot find remote node"
79 " to terminate I/O Data x%x\n",
80 rport->port_id);
81 return;
82 }
83
84 phba = ndlp->phba;
85
86 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_RPORT,
87 "rport terminate: sid:x%x did:x%x flg:x%x",
88 ndlp->nlp_sid, ndlp->nlp_DID, ndlp->nlp_flag);
89
90 if (ndlp->nlp_sid != NLP_NO_SID) {
91 lpfc_sli_abort_iocb(ndlp->vport,
92 &phba->sli.ring[phba->sli.fcp_ring],
93 ndlp->nlp_sid, 0, LPFC_CTX_TGT);
94 }
95 }
96
97 /*
98 * This function will be called when dev_loss_tmo fire.
99 */
100 void
101 lpfc_dev_loss_tmo_callbk(struct fc_rport *rport)
102 {
103 struct lpfc_rport_data *rdata;
104 struct lpfc_nodelist * ndlp;
105 struct lpfc_vport *vport;
106 struct lpfc_hba *phba;
107 struct lpfc_work_evt *evtp;
108 int put_node;
109 int put_rport;
110
111 rdata = rport->dd_data;
112 ndlp = rdata->pnode;
113 if (!ndlp || !NLP_CHK_NODE_ACT(ndlp))
114 return;
115
116 vport = ndlp->vport;
117 phba = vport->phba;
118
119 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
120 "rport devlosscb: sid:x%x did:x%x flg:x%x",
121 ndlp->nlp_sid, ndlp->nlp_DID, ndlp->nlp_flag);
122
123 /* Don't defer this if we are in the process of deleting the vport
124 * or unloading the driver. The unload will cleanup the node
125 * appropriately we just need to cleanup the ndlp rport info here.
126 */
127 if (vport->load_flag & FC_UNLOADING) {
128 put_node = rdata->pnode != NULL;
129 put_rport = ndlp->rport != NULL;
130 rdata->pnode = NULL;
131 ndlp->rport = NULL;
132 if (put_node)
133 lpfc_nlp_put(ndlp);
134 if (put_rport)
135 put_device(&rport->dev);
136 return;
137 }
138
139 if (ndlp->nlp_state == NLP_STE_MAPPED_NODE)
140 return;
141
142 evtp = &ndlp->dev_loss_evt;
143
144 if (!list_empty(&evtp->evt_listp))
145 return;
146
147 spin_lock_irq(&phba->hbalock);
148 /* We need to hold the node by incrementing the reference
149 * count until this queued work is done
150 */
151 evtp->evt_arg1 = lpfc_nlp_get(ndlp);
152 if (evtp->evt_arg1) {
153 evtp->evt = LPFC_EVT_DEV_LOSS;
154 list_add_tail(&evtp->evt_listp, &phba->work_list);
155 lpfc_worker_wake_up(phba);
156 }
157 spin_unlock_irq(&phba->hbalock);
158
159 return;
160 }
161
162 /*
163 * This function is called from the worker thread when dev_loss_tmo
164 * expire.
165 */
166 static void
167 lpfc_dev_loss_tmo_handler(struct lpfc_nodelist *ndlp)
168 {
169 struct lpfc_rport_data *rdata;
170 struct fc_rport *rport;
171 struct lpfc_vport *vport;
172 struct lpfc_hba *phba;
173 uint8_t *name;
174 int put_node;
175 int put_rport;
176 int warn_on = 0;
177
178 rport = ndlp->rport;
179
180 if (!rport)
181 return;
182
183 rdata = rport->dd_data;
184 name = (uint8_t *) &ndlp->nlp_portname;
185 vport = ndlp->vport;
186 phba = vport->phba;
187
188 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
189 "rport devlosstmo:did:x%x type:x%x id:x%x",
190 ndlp->nlp_DID, ndlp->nlp_type, rport->scsi_target_id);
191
192 /* Don't defer this if we are in the process of deleting the vport
193 * or unloading the driver. The unload will cleanup the node
194 * appropriately we just need to cleanup the ndlp rport info here.
195 */
196 if (vport->load_flag & FC_UNLOADING) {
197 if (ndlp->nlp_sid != NLP_NO_SID) {
198 /* flush the target */
199 lpfc_sli_abort_iocb(vport,
200 &phba->sli.ring[phba->sli.fcp_ring],
201 ndlp->nlp_sid, 0, LPFC_CTX_TGT);
202 }
203 put_node = rdata->pnode != NULL;
204 put_rport = ndlp->rport != NULL;
205 rdata->pnode = NULL;
206 ndlp->rport = NULL;
207 if (put_node)
208 lpfc_nlp_put(ndlp);
209 if (put_rport)
210 put_device(&rport->dev);
211 return;
212 }
213
214 if (ndlp->nlp_state == NLP_STE_MAPPED_NODE) {
215 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
216 "0284 Devloss timeout Ignored on "
217 "WWPN %x:%x:%x:%x:%x:%x:%x:%x "
218 "NPort x%x\n",
219 *name, *(name+1), *(name+2), *(name+3),
220 *(name+4), *(name+5), *(name+6), *(name+7),
221 ndlp->nlp_DID);
222 return;
223 }
224
225 if (ndlp->nlp_type & NLP_FABRIC) {
226 /* We will clean up these Nodes in linkup */
227 put_node = rdata->pnode != NULL;
228 put_rport = ndlp->rport != NULL;
229 rdata->pnode = NULL;
230 ndlp->rport = NULL;
231 if (put_node)
232 lpfc_nlp_put(ndlp);
233 if (put_rport)
234 put_device(&rport->dev);
235 return;
236 }
237
238 if (ndlp->nlp_sid != NLP_NO_SID) {
239 warn_on = 1;
240 /* flush the target */
241 lpfc_sli_abort_iocb(vport, &phba->sli.ring[phba->sli.fcp_ring],
242 ndlp->nlp_sid, 0, LPFC_CTX_TGT);
243 }
244
245 if (warn_on) {
246 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
247 "0203 Devloss timeout on "
248 "WWPN %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x "
249 "NPort x%06x Data: x%x x%x x%x\n",
250 *name, *(name+1), *(name+2), *(name+3),
251 *(name+4), *(name+5), *(name+6), *(name+7),
252 ndlp->nlp_DID, ndlp->nlp_flag,
253 ndlp->nlp_state, ndlp->nlp_rpi);
254 } else {
255 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
256 "0204 Devloss timeout on "
257 "WWPN %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x "
258 "NPort x%06x Data: x%x x%x x%x\n",
259 *name, *(name+1), *(name+2), *(name+3),
260 *(name+4), *(name+5), *(name+6), *(name+7),
261 ndlp->nlp_DID, ndlp->nlp_flag,
262 ndlp->nlp_state, ndlp->nlp_rpi);
263 }
264
265 put_node = rdata->pnode != NULL;
266 put_rport = ndlp->rport != NULL;
267 rdata->pnode = NULL;
268 ndlp->rport = NULL;
269 if (put_node)
270 lpfc_nlp_put(ndlp);
271 if (put_rport)
272 put_device(&rport->dev);
273
274 if (!(vport->load_flag & FC_UNLOADING) &&
275 !(ndlp->nlp_flag & NLP_DELAY_TMO) &&
276 !(ndlp->nlp_flag & NLP_NPR_2B_DISC) &&
277 (ndlp->nlp_state != NLP_STE_UNMAPPED_NODE))
278 lpfc_disc_state_machine(vport, ndlp, NULL, NLP_EVT_DEVICE_RM);
279
280 lpfc_unregister_unused_fcf(phba);
281 }
282
283 /**
284 * lpfc_alloc_fast_evt - Allocates data structure for posting event
285 * @phba: Pointer to hba context object.
286 *
287 * This function is called from the functions which need to post
288 * events from interrupt context. This function allocates data
289 * structure required for posting event. It also keeps track of
290 * number of events pending and prevent event storm when there are
291 * too many events.
292 **/
293 struct lpfc_fast_path_event *
294 lpfc_alloc_fast_evt(struct lpfc_hba *phba) {
295 struct lpfc_fast_path_event *ret;
296
297 /* If there are lot of fast event do not exhaust memory due to this */
298 if (atomic_read(&phba->fast_event_count) > LPFC_MAX_EVT_COUNT)
299 return NULL;
300
301 ret = kzalloc(sizeof(struct lpfc_fast_path_event),
302 GFP_ATOMIC);
303 if (ret) {
304 atomic_inc(&phba->fast_event_count);
305 INIT_LIST_HEAD(&ret->work_evt.evt_listp);
306 ret->work_evt.evt = LPFC_EVT_FASTPATH_MGMT_EVT;
307 }
308 return ret;
309 }
310
311 /**
312 * lpfc_free_fast_evt - Frees event data structure
313 * @phba: Pointer to hba context object.
314 * @evt: Event object which need to be freed.
315 *
316 * This function frees the data structure required for posting
317 * events.
318 **/
319 void
320 lpfc_free_fast_evt(struct lpfc_hba *phba,
321 struct lpfc_fast_path_event *evt) {
322
323 atomic_dec(&phba->fast_event_count);
324 kfree(evt);
325 }
326
327 /**
328 * lpfc_send_fastpath_evt - Posts events generated from fast path
329 * @phba: Pointer to hba context object.
330 * @evtp: Event data structure.
331 *
332 * This function is called from worker thread, when the interrupt
333 * context need to post an event. This function posts the event
334 * to fc transport netlink interface.
335 **/
336 static void
337 lpfc_send_fastpath_evt(struct lpfc_hba *phba,
338 struct lpfc_work_evt *evtp)
339 {
340 unsigned long evt_category, evt_sub_category;
341 struct lpfc_fast_path_event *fast_evt_data;
342 char *evt_data;
343 uint32_t evt_data_size;
344 struct Scsi_Host *shost;
345
346 fast_evt_data = container_of(evtp, struct lpfc_fast_path_event,
347 work_evt);
348
349 evt_category = (unsigned long) fast_evt_data->un.fabric_evt.event_type;
350 evt_sub_category = (unsigned long) fast_evt_data->un.
351 fabric_evt.subcategory;
352 shost = lpfc_shost_from_vport(fast_evt_data->vport);
353 if (evt_category == FC_REG_FABRIC_EVENT) {
354 if (evt_sub_category == LPFC_EVENT_FCPRDCHKERR) {
355 evt_data = (char *) &fast_evt_data->un.read_check_error;
356 evt_data_size = sizeof(fast_evt_data->un.
357 read_check_error);
358 } else if ((evt_sub_category == LPFC_EVENT_FABRIC_BUSY) ||
359 (evt_sub_category == LPFC_EVENT_PORT_BUSY)) {
360 evt_data = (char *) &fast_evt_data->un.fabric_evt;
361 evt_data_size = sizeof(fast_evt_data->un.fabric_evt);
362 } else {
363 lpfc_free_fast_evt(phba, fast_evt_data);
364 return;
365 }
366 } else if (evt_category == FC_REG_SCSI_EVENT) {
367 switch (evt_sub_category) {
368 case LPFC_EVENT_QFULL:
369 case LPFC_EVENT_DEVBSY:
370 evt_data = (char *) &fast_evt_data->un.scsi_evt;
371 evt_data_size = sizeof(fast_evt_data->un.scsi_evt);
372 break;
373 case LPFC_EVENT_CHECK_COND:
374 evt_data = (char *) &fast_evt_data->un.check_cond_evt;
375 evt_data_size = sizeof(fast_evt_data->un.
376 check_cond_evt);
377 break;
378 case LPFC_EVENT_VARQUEDEPTH:
379 evt_data = (char *) &fast_evt_data->un.queue_depth_evt;
380 evt_data_size = sizeof(fast_evt_data->un.
381 queue_depth_evt);
382 break;
383 default:
384 lpfc_free_fast_evt(phba, fast_evt_data);
385 return;
386 }
387 } else {
388 lpfc_free_fast_evt(phba, fast_evt_data);
389 return;
390 }
391
392 fc_host_post_vendor_event(shost,
393 fc_get_event_number(),
394 evt_data_size,
395 evt_data,
396 LPFC_NL_VENDOR_ID);
397
398 lpfc_free_fast_evt(phba, fast_evt_data);
399 return;
400 }
401
402 static void
403 lpfc_work_list_done(struct lpfc_hba *phba)
404 {
405 struct lpfc_work_evt *evtp = NULL;
406 struct lpfc_nodelist *ndlp;
407 int free_evt;
408
409 spin_lock_irq(&phba->hbalock);
410 while (!list_empty(&phba->work_list)) {
411 list_remove_head((&phba->work_list), evtp, typeof(*evtp),
412 evt_listp);
413 spin_unlock_irq(&phba->hbalock);
414 free_evt = 1;
415 switch (evtp->evt) {
416 case LPFC_EVT_ELS_RETRY:
417 ndlp = (struct lpfc_nodelist *) (evtp->evt_arg1);
418 lpfc_els_retry_delay_handler(ndlp);
419 free_evt = 0; /* evt is part of ndlp */
420 /* decrement the node reference count held
421 * for this queued work
422 */
423 lpfc_nlp_put(ndlp);
424 break;
425 case LPFC_EVT_DEV_LOSS:
426 ndlp = (struct lpfc_nodelist *)(evtp->evt_arg1);
427 lpfc_dev_loss_tmo_handler(ndlp);
428 free_evt = 0;
429 /* decrement the node reference count held for
430 * this queued work
431 */
432 lpfc_nlp_put(ndlp);
433 break;
434 case LPFC_EVT_ONLINE:
435 if (phba->link_state < LPFC_LINK_DOWN)
436 *(int *) (evtp->evt_arg1) = lpfc_online(phba);
437 else
438 *(int *) (evtp->evt_arg1) = 0;
439 complete((struct completion *)(evtp->evt_arg2));
440 break;
441 case LPFC_EVT_OFFLINE_PREP:
442 if (phba->link_state >= LPFC_LINK_DOWN)
443 lpfc_offline_prep(phba);
444 *(int *)(evtp->evt_arg1) = 0;
445 complete((struct completion *)(evtp->evt_arg2));
446 break;
447 case LPFC_EVT_OFFLINE:
448 lpfc_offline(phba);
449 lpfc_sli_brdrestart(phba);
450 *(int *)(evtp->evt_arg1) =
451 lpfc_sli_brdready(phba, HS_FFRDY | HS_MBRDY);
452 lpfc_unblock_mgmt_io(phba);
453 complete((struct completion *)(evtp->evt_arg2));
454 break;
455 case LPFC_EVT_WARM_START:
456 lpfc_offline(phba);
457 lpfc_reset_barrier(phba);
458 lpfc_sli_brdreset(phba);
459 lpfc_hba_down_post(phba);
460 *(int *)(evtp->evt_arg1) =
461 lpfc_sli_brdready(phba, HS_MBRDY);
462 lpfc_unblock_mgmt_io(phba);
463 complete((struct completion *)(evtp->evt_arg2));
464 break;
465 case LPFC_EVT_KILL:
466 lpfc_offline(phba);
467 *(int *)(evtp->evt_arg1)
468 = (phba->pport->stopped)
469 ? 0 : lpfc_sli_brdkill(phba);
470 lpfc_unblock_mgmt_io(phba);
471 complete((struct completion *)(evtp->evt_arg2));
472 break;
473 case LPFC_EVT_FASTPATH_MGMT_EVT:
474 lpfc_send_fastpath_evt(phba, evtp);
475 free_evt = 0;
476 break;
477 }
478 if (free_evt)
479 kfree(evtp);
480 spin_lock_irq(&phba->hbalock);
481 }
482 spin_unlock_irq(&phba->hbalock);
483
484 }
485
486 static void
487 lpfc_work_done(struct lpfc_hba *phba)
488 {
489 struct lpfc_sli_ring *pring;
490 uint32_t ha_copy, status, control, work_port_events;
491 struct lpfc_vport **vports;
492 struct lpfc_vport *vport;
493 int i;
494
495 spin_lock_irq(&phba->hbalock);
496 ha_copy = phba->work_ha;
497 phba->work_ha = 0;
498 spin_unlock_irq(&phba->hbalock);
499
500 /* First, try to post the next mailbox command to SLI4 device */
501 if (phba->pci_dev_grp == LPFC_PCI_DEV_OC)
502 lpfc_sli4_post_async_mbox(phba);
503
504 if (ha_copy & HA_ERATT)
505 /* Handle the error attention event */
506 lpfc_handle_eratt(phba);
507
508 if (ha_copy & HA_MBATT)
509 lpfc_sli_handle_mb_event(phba);
510
511 if (ha_copy & HA_LATT)
512 lpfc_handle_latt(phba);
513
514 /* Process SLI4 events */
515 if (phba->pci_dev_grp == LPFC_PCI_DEV_OC) {
516 if (phba->hba_flag & FCP_XRI_ABORT_EVENT)
517 lpfc_sli4_fcp_xri_abort_event_proc(phba);
518 if (phba->hba_flag & ELS_XRI_ABORT_EVENT)
519 lpfc_sli4_els_xri_abort_event_proc(phba);
520 if (phba->hba_flag & ASYNC_EVENT)
521 lpfc_sli4_async_event_proc(phba);
522 if (phba->hba_flag & HBA_POST_RECEIVE_BUFFER) {
523 spin_lock_irq(&phba->hbalock);
524 phba->hba_flag &= ~HBA_POST_RECEIVE_BUFFER;
525 spin_unlock_irq(&phba->hbalock);
526 lpfc_sli_hbqbuf_add_hbqs(phba, LPFC_ELS_HBQ);
527 }
528 if (phba->fcf.fcf_flag & FCF_REDISC_EVT)
529 lpfc_sli4_fcf_redisc_event_proc(phba);
530 }
531
532 vports = lpfc_create_vport_work_array(phba);
533 if (vports != NULL)
534 for (i = 0; i <= phba->max_vports; i++) {
535 /*
536 * We could have no vports in array if unloading, so if
537 * this happens then just use the pport
538 */
539 if (vports[i] == NULL && i == 0)
540 vport = phba->pport;
541 else
542 vport = vports[i];
543 if (vport == NULL)
544 break;
545 spin_lock_irq(&vport->work_port_lock);
546 work_port_events = vport->work_port_events;
547 vport->work_port_events &= ~work_port_events;
548 spin_unlock_irq(&vport->work_port_lock);
549 if (work_port_events & WORKER_DISC_TMO)
550 lpfc_disc_timeout_handler(vport);
551 if (work_port_events & WORKER_ELS_TMO)
552 lpfc_els_timeout_handler(vport);
553 if (work_port_events & WORKER_HB_TMO)
554 lpfc_hb_timeout_handler(phba);
555 if (work_port_events & WORKER_MBOX_TMO)
556 lpfc_mbox_timeout_handler(phba);
557 if (work_port_events & WORKER_FABRIC_BLOCK_TMO)
558 lpfc_unblock_fabric_iocbs(phba);
559 if (work_port_events & WORKER_FDMI_TMO)
560 lpfc_fdmi_timeout_handler(vport);
561 if (work_port_events & WORKER_RAMP_DOWN_QUEUE)
562 lpfc_ramp_down_queue_handler(phba);
563 if (work_port_events & WORKER_RAMP_UP_QUEUE)
564 lpfc_ramp_up_queue_handler(phba);
565 }
566 lpfc_destroy_vport_work_array(phba, vports);
567
568 pring = &phba->sli.ring[LPFC_ELS_RING];
569 status = (ha_copy & (HA_RXMASK << (4*LPFC_ELS_RING)));
570 status >>= (4*LPFC_ELS_RING);
571 if ((status & HA_RXMASK) ||
572 (pring->flag & LPFC_DEFERRED_RING_EVENT) ||
573 (phba->hba_flag & HBA_SP_QUEUE_EVT)) {
574 if (pring->flag & LPFC_STOP_IOCB_EVENT) {
575 pring->flag |= LPFC_DEFERRED_RING_EVENT;
576 /* Set the lpfc data pending flag */
577 set_bit(LPFC_DATA_READY, &phba->data_flags);
578 } else {
579 pring->flag &= ~LPFC_DEFERRED_RING_EVENT;
580 lpfc_sli_handle_slow_ring_event(phba, pring,
581 (status &
582 HA_RXMASK));
583 }
584 /*
585 * Turn on Ring interrupts
586 */
587 if (phba->sli_rev <= LPFC_SLI_REV3) {
588 spin_lock_irq(&phba->hbalock);
589 control = readl(phba->HCregaddr);
590 if (!(control & (HC_R0INT_ENA << LPFC_ELS_RING))) {
591 lpfc_debugfs_slow_ring_trc(phba,
592 "WRK Enable ring: cntl:x%x hacopy:x%x",
593 control, ha_copy, 0);
594
595 control |= (HC_R0INT_ENA << LPFC_ELS_RING);
596 writel(control, phba->HCregaddr);
597 readl(phba->HCregaddr); /* flush */
598 } else {
599 lpfc_debugfs_slow_ring_trc(phba,
600 "WRK Ring ok: cntl:x%x hacopy:x%x",
601 control, ha_copy, 0);
602 }
603 spin_unlock_irq(&phba->hbalock);
604 }
605 }
606 lpfc_work_list_done(phba);
607 }
608
609 int
610 lpfc_do_work(void *p)
611 {
612 struct lpfc_hba *phba = p;
613 int rc;
614
615 set_user_nice(current, -20);
616 phba->data_flags = 0;
617
618 while (!kthread_should_stop()) {
619 /* wait and check worker queue activities */
620 rc = wait_event_interruptible(phba->work_waitq,
621 (test_and_clear_bit(LPFC_DATA_READY,
622 &phba->data_flags)
623 || kthread_should_stop()));
624 /* Signal wakeup shall terminate the worker thread */
625 if (rc) {
626 lpfc_printf_log(phba, KERN_ERR, LOG_ELS,
627 "0433 Wakeup on signal: rc=x%x\n", rc);
628 break;
629 }
630
631 /* Attend pending lpfc data processing */
632 lpfc_work_done(phba);
633 }
634 phba->worker_thread = NULL;
635 lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
636 "0432 Worker thread stopped.\n");
637 return 0;
638 }
639
640 /*
641 * This is only called to handle FC worker events. Since this a rare
642 * occurance, we allocate a struct lpfc_work_evt structure here instead of
643 * embedding it in the IOCB.
644 */
645 int
646 lpfc_workq_post_event(struct lpfc_hba *phba, void *arg1, void *arg2,
647 uint32_t evt)
648 {
649 struct lpfc_work_evt *evtp;
650 unsigned long flags;
651
652 /*
653 * All Mailbox completions and LPFC_ELS_RING rcv ring IOCB events will
654 * be queued to worker thread for processing
655 */
656 evtp = kmalloc(sizeof(struct lpfc_work_evt), GFP_ATOMIC);
657 if (!evtp)
658 return 0;
659
660 evtp->evt_arg1 = arg1;
661 evtp->evt_arg2 = arg2;
662 evtp->evt = evt;
663
664 spin_lock_irqsave(&phba->hbalock, flags);
665 list_add_tail(&evtp->evt_listp, &phba->work_list);
666 spin_unlock_irqrestore(&phba->hbalock, flags);
667
668 lpfc_worker_wake_up(phba);
669
670 return 1;
671 }
672
673 void
674 lpfc_cleanup_rpis(struct lpfc_vport *vport, int remove)
675 {
676 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
677 struct lpfc_hba *phba = vport->phba;
678 struct lpfc_nodelist *ndlp, *next_ndlp;
679 int rc;
680
681 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) {
682 if (!NLP_CHK_NODE_ACT(ndlp))
683 continue;
684 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
685 continue;
686 if ((phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN) ||
687 ((vport->port_type == LPFC_NPIV_PORT) &&
688 (ndlp->nlp_DID == NameServer_DID)))
689 lpfc_unreg_rpi(vport, ndlp);
690
691 /* Leave Fabric nodes alone on link down */
692 if ((phba->sli_rev < LPFC_SLI_REV4) &&
693 (!remove && ndlp->nlp_type & NLP_FABRIC))
694 continue;
695 rc = lpfc_disc_state_machine(vport, ndlp, NULL,
696 remove
697 ? NLP_EVT_DEVICE_RM
698 : NLP_EVT_DEVICE_RECOVERY);
699 }
700 if (phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN) {
701 lpfc_mbx_unreg_vpi(vport);
702 spin_lock_irq(shost->host_lock);
703 vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
704 spin_unlock_irq(shost->host_lock);
705 }
706 }
707
708 void
709 lpfc_port_link_failure(struct lpfc_vport *vport)
710 {
711 lpfc_vport_set_state(vport, FC_VPORT_LINKDOWN);
712
713 /* Cleanup any outstanding received buffers */
714 lpfc_cleanup_rcv_buffers(vport);
715
716 /* Cleanup any outstanding RSCN activity */
717 lpfc_els_flush_rscn(vport);
718
719 /* Cleanup any outstanding ELS commands */
720 lpfc_els_flush_cmd(vport);
721
722 lpfc_cleanup_rpis(vport, 0);
723
724 /* Turn off discovery timer if its running */
725 lpfc_can_disctmo(vport);
726 }
727
728 void
729 lpfc_linkdown_port(struct lpfc_vport *vport)
730 {
731 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
732
733 fc_host_post_event(shost, fc_get_event_number(), FCH_EVT_LINKDOWN, 0);
734
735 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
736 "Link Down: state:x%x rtry:x%x flg:x%x",
737 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
738
739 lpfc_port_link_failure(vport);
740
741 }
742
743 int
744 lpfc_linkdown(struct lpfc_hba *phba)
745 {
746 struct lpfc_vport *vport = phba->pport;
747 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
748 struct lpfc_vport **vports;
749 LPFC_MBOXQ_t *mb;
750 int i;
751
752 if (phba->link_state == LPFC_LINK_DOWN)
753 return 0;
754
755 /* Block all SCSI stack I/Os */
756 lpfc_scsi_dev_block(phba);
757
758 spin_lock_irq(&phba->hbalock);
759 phba->fcf.fcf_flag &= ~(FCF_AVAILABLE | FCF_SCAN_DONE);
760 spin_unlock_irq(&phba->hbalock);
761 if (phba->link_state > LPFC_LINK_DOWN) {
762 phba->link_state = LPFC_LINK_DOWN;
763 spin_lock_irq(shost->host_lock);
764 phba->pport->fc_flag &= ~FC_LBIT;
765 spin_unlock_irq(shost->host_lock);
766 }
767 vports = lpfc_create_vport_work_array(phba);
768 if (vports != NULL)
769 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
770 /* Issue a LINK DOWN event to all nodes */
771 lpfc_linkdown_port(vports[i]);
772 }
773 lpfc_destroy_vport_work_array(phba, vports);
774 /* Clean up any firmware default rpi's */
775 mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
776 if (mb) {
777 lpfc_unreg_did(phba, 0xffff, 0xffffffff, mb);
778 mb->vport = vport;
779 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
780 if (lpfc_sli_issue_mbox(phba, mb, MBX_NOWAIT)
781 == MBX_NOT_FINISHED) {
782 mempool_free(mb, phba->mbox_mem_pool);
783 }
784 }
785
786 /* Setup myDID for link up if we are in pt2pt mode */
787 if (phba->pport->fc_flag & FC_PT2PT) {
788 phba->pport->fc_myDID = 0;
789 mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
790 if (mb) {
791 lpfc_config_link(phba, mb);
792 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
793 mb->vport = vport;
794 if (lpfc_sli_issue_mbox(phba, mb, MBX_NOWAIT)
795 == MBX_NOT_FINISHED) {
796 mempool_free(mb, phba->mbox_mem_pool);
797 }
798 }
799 spin_lock_irq(shost->host_lock);
800 phba->pport->fc_flag &= ~(FC_PT2PT | FC_PT2PT_PLOGI);
801 spin_unlock_irq(shost->host_lock);
802 }
803
804 return 0;
805 }
806
807 static void
808 lpfc_linkup_cleanup_nodes(struct lpfc_vport *vport)
809 {
810 struct lpfc_nodelist *ndlp;
811
812 list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
813 if (!NLP_CHK_NODE_ACT(ndlp))
814 continue;
815 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
816 continue;
817 if (ndlp->nlp_type & NLP_FABRIC) {
818 /* On Linkup its safe to clean up the ndlp
819 * from Fabric connections.
820 */
821 if (ndlp->nlp_DID != Fabric_DID)
822 lpfc_unreg_rpi(vport, ndlp);
823 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
824 } else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) {
825 /* Fail outstanding IO now since device is
826 * marked for PLOGI.
827 */
828 lpfc_unreg_rpi(vport, ndlp);
829 }
830 }
831 }
832
833 static void
834 lpfc_linkup_port(struct lpfc_vport *vport)
835 {
836 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
837 struct lpfc_hba *phba = vport->phba;
838
839 if ((vport->load_flag & FC_UNLOADING) != 0)
840 return;
841
842 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
843 "Link Up: top:x%x speed:x%x flg:x%x",
844 phba->fc_topology, phba->fc_linkspeed, phba->link_flag);
845
846 /* If NPIV is not enabled, only bring the physical port up */
847 if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
848 (vport != phba->pport))
849 return;
850
851 fc_host_post_event(shost, fc_get_event_number(), FCH_EVT_LINKUP, 0);
852
853 spin_lock_irq(shost->host_lock);
854 vport->fc_flag &= ~(FC_PT2PT | FC_PT2PT_PLOGI | FC_ABORT_DISCOVERY |
855 FC_RSCN_MODE | FC_NLP_MORE | FC_RSCN_DISCOVERY);
856 vport->fc_flag |= FC_NDISC_ACTIVE;
857 vport->fc_ns_retry = 0;
858 spin_unlock_irq(shost->host_lock);
859
860 if (vport->fc_flag & FC_LBIT)
861 lpfc_linkup_cleanup_nodes(vport);
862
863 }
864
865 static int
866 lpfc_linkup(struct lpfc_hba *phba)
867 {
868 struct lpfc_vport **vports;
869 int i;
870
871 phba->link_state = LPFC_LINK_UP;
872
873 /* Unblock fabric iocbs if they are blocked */
874 clear_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags);
875 del_timer_sync(&phba->fabric_block_timer);
876
877 vports = lpfc_create_vport_work_array(phba);
878 if (vports != NULL)
879 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++)
880 lpfc_linkup_port(vports[i]);
881 lpfc_destroy_vport_work_array(phba, vports);
882 if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
883 (phba->sli_rev < LPFC_SLI_REV4))
884 lpfc_issue_clear_la(phba, phba->pport);
885
886 return 0;
887 }
888
889 /*
890 * This routine handles processing a CLEAR_LA mailbox
891 * command upon completion. It is setup in the LPFC_MBOXQ
892 * as the completion routine when the command is
893 * handed off to the SLI layer.
894 */
895 static void
896 lpfc_mbx_cmpl_clear_la(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
897 {
898 struct lpfc_vport *vport = pmb->vport;
899 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
900 struct lpfc_sli *psli = &phba->sli;
901 MAILBOX_t *mb = &pmb->u.mb;
902 uint32_t control;
903
904 /* Since we don't do discovery right now, turn these off here */
905 psli->ring[psli->extra_ring].flag &= ~LPFC_STOP_IOCB_EVENT;
906 psli->ring[psli->fcp_ring].flag &= ~LPFC_STOP_IOCB_EVENT;
907 psli->ring[psli->next_ring].flag &= ~LPFC_STOP_IOCB_EVENT;
908
909 /* Check for error */
910 if ((mb->mbxStatus) && (mb->mbxStatus != 0x1601)) {
911 /* CLEAR_LA mbox error <mbxStatus> state <hba_state> */
912 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
913 "0320 CLEAR_LA mbxStatus error x%x hba "
914 "state x%x\n",
915 mb->mbxStatus, vport->port_state);
916 phba->link_state = LPFC_HBA_ERROR;
917 goto out;
918 }
919
920 if (vport->port_type == LPFC_PHYSICAL_PORT)
921 phba->link_state = LPFC_HBA_READY;
922
923 spin_lock_irq(&phba->hbalock);
924 psli->sli_flag |= LPFC_PROCESS_LA;
925 control = readl(phba->HCregaddr);
926 control |= HC_LAINT_ENA;
927 writel(control, phba->HCregaddr);
928 readl(phba->HCregaddr); /* flush */
929 spin_unlock_irq(&phba->hbalock);
930 mempool_free(pmb, phba->mbox_mem_pool);
931 return;
932
933 out:
934 /* Device Discovery completes */
935 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
936 "0225 Device Discovery completes\n");
937 mempool_free(pmb, phba->mbox_mem_pool);
938
939 spin_lock_irq(shost->host_lock);
940 vport->fc_flag &= ~FC_ABORT_DISCOVERY;
941 spin_unlock_irq(shost->host_lock);
942
943 lpfc_can_disctmo(vport);
944
945 /* turn on Link Attention interrupts */
946
947 spin_lock_irq(&phba->hbalock);
948 psli->sli_flag |= LPFC_PROCESS_LA;
949 control = readl(phba->HCregaddr);
950 control |= HC_LAINT_ENA;
951 writel(control, phba->HCregaddr);
952 readl(phba->HCregaddr); /* flush */
953 spin_unlock_irq(&phba->hbalock);
954
955 return;
956 }
957
958
959 static void
960 lpfc_mbx_cmpl_local_config_link(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
961 {
962 struct lpfc_vport *vport = pmb->vport;
963
964 if (pmb->u.mb.mbxStatus)
965 goto out;
966
967 mempool_free(pmb, phba->mbox_mem_pool);
968
969 if (phba->fc_topology == TOPOLOGY_LOOP &&
970 vport->fc_flag & FC_PUBLIC_LOOP &&
971 !(vport->fc_flag & FC_LBIT)) {
972 /* Need to wait for FAN - use discovery timer
973 * for timeout. port_state is identically
974 * LPFC_LOCAL_CFG_LINK while waiting for FAN
975 */
976 lpfc_set_disctmo(vport);
977 return;
978 }
979
980 /* Start discovery by sending a FLOGI. port_state is identically
981 * LPFC_FLOGI while waiting for FLOGI cmpl
982 */
983 if (vport->port_state != LPFC_FLOGI) {
984 lpfc_initial_flogi(vport);
985 }
986 return;
987
988 out:
989 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
990 "0306 CONFIG_LINK mbxStatus error x%x "
991 "HBA state x%x\n",
992 pmb->u.mb.mbxStatus, vport->port_state);
993 mempool_free(pmb, phba->mbox_mem_pool);
994
995 lpfc_linkdown(phba);
996
997 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
998 "0200 CONFIG_LINK bad hba state x%x\n",
999 vport->port_state);
1000
1001 lpfc_issue_clear_la(phba, vport);
1002 return;
1003 }
1004
1005 static void
1006 lpfc_mbx_cmpl_reg_fcfi(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
1007 {
1008 struct lpfc_vport *vport = mboxq->vport;
1009 unsigned long flags;
1010
1011 if (mboxq->u.mb.mbxStatus) {
1012 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
1013 "2017 REG_FCFI mbxStatus error x%x "
1014 "HBA state x%x\n",
1015 mboxq->u.mb.mbxStatus, vport->port_state);
1016 mempool_free(mboxq, phba->mbox_mem_pool);
1017 return;
1018 }
1019
1020 /* Start FCoE discovery by sending a FLOGI. */
1021 phba->fcf.fcfi = bf_get(lpfc_reg_fcfi_fcfi, &mboxq->u.mqe.un.reg_fcfi);
1022 /* Set the FCFI registered flag */
1023 spin_lock_irqsave(&phba->hbalock, flags);
1024 phba->fcf.fcf_flag |= FCF_REGISTERED;
1025 spin_unlock_irqrestore(&phba->hbalock, flags);
1026 /* If there is a pending FCoE event, restart FCF table scan. */
1027 if (lpfc_check_pending_fcoe_event(phba, 1)) {
1028 mempool_free(mboxq, phba->mbox_mem_pool);
1029 return;
1030 }
1031 spin_lock_irqsave(&phba->hbalock, flags);
1032 phba->fcf.fcf_flag |= (FCF_SCAN_DONE | FCF_IN_USE);
1033 phba->hba_flag &= ~FCF_DISC_INPROGRESS;
1034 spin_unlock_irqrestore(&phba->hbalock, flags);
1035 if (vport->port_state != LPFC_FLOGI)
1036 lpfc_initial_flogi(vport);
1037
1038 mempool_free(mboxq, phba->mbox_mem_pool);
1039 return;
1040 }
1041
1042 /**
1043 * lpfc_fab_name_match - Check if the fcf fabric name match.
1044 * @fab_name: pointer to fabric name.
1045 * @new_fcf_record: pointer to fcf record.
1046 *
1047 * This routine compare the fcf record's fabric name with provided
1048 * fabric name. If the fabric name are identical this function
1049 * returns 1 else return 0.
1050 **/
1051 static uint32_t
1052 lpfc_fab_name_match(uint8_t *fab_name, struct fcf_record *new_fcf_record)
1053 {
1054 if (fab_name[0] != bf_get(lpfc_fcf_record_fab_name_0, new_fcf_record))
1055 return 0;
1056 if (fab_name[1] != bf_get(lpfc_fcf_record_fab_name_1, new_fcf_record))
1057 return 0;
1058 if (fab_name[2] != bf_get(lpfc_fcf_record_fab_name_2, new_fcf_record))
1059 return 0;
1060 if (fab_name[3] != bf_get(lpfc_fcf_record_fab_name_3, new_fcf_record))
1061 return 0;
1062 if (fab_name[4] != bf_get(lpfc_fcf_record_fab_name_4, new_fcf_record))
1063 return 0;
1064 if (fab_name[5] != bf_get(lpfc_fcf_record_fab_name_5, new_fcf_record))
1065 return 0;
1066 if (fab_name[6] != bf_get(lpfc_fcf_record_fab_name_6, new_fcf_record))
1067 return 0;
1068 if (fab_name[7] != bf_get(lpfc_fcf_record_fab_name_7, new_fcf_record))
1069 return 0;
1070 return 1;
1071 }
1072
1073 /**
1074 * lpfc_sw_name_match - Check if the fcf switch name match.
1075 * @fab_name: pointer to fabric name.
1076 * @new_fcf_record: pointer to fcf record.
1077 *
1078 * This routine compare the fcf record's switch name with provided
1079 * switch name. If the switch name are identical this function
1080 * returns 1 else return 0.
1081 **/
1082 static uint32_t
1083 lpfc_sw_name_match(uint8_t *sw_name, struct fcf_record *new_fcf_record)
1084 {
1085 if (sw_name[0] != bf_get(lpfc_fcf_record_switch_name_0, new_fcf_record))
1086 return 0;
1087 if (sw_name[1] != bf_get(lpfc_fcf_record_switch_name_1, new_fcf_record))
1088 return 0;
1089 if (sw_name[2] != bf_get(lpfc_fcf_record_switch_name_2, new_fcf_record))
1090 return 0;
1091 if (sw_name[3] != bf_get(lpfc_fcf_record_switch_name_3, new_fcf_record))
1092 return 0;
1093 if (sw_name[4] != bf_get(lpfc_fcf_record_switch_name_4, new_fcf_record))
1094 return 0;
1095 if (sw_name[5] != bf_get(lpfc_fcf_record_switch_name_5, new_fcf_record))
1096 return 0;
1097 if (sw_name[6] != bf_get(lpfc_fcf_record_switch_name_6, new_fcf_record))
1098 return 0;
1099 if (sw_name[7] != bf_get(lpfc_fcf_record_switch_name_7, new_fcf_record))
1100 return 0;
1101 return 1;
1102 }
1103
1104 /**
1105 * lpfc_mac_addr_match - Check if the fcf mac address match.
1106 * @mac_addr: pointer to mac address.
1107 * @new_fcf_record: pointer to fcf record.
1108 *
1109 * This routine compare the fcf record's mac address with HBA's
1110 * FCF mac address. If the mac addresses are identical this function
1111 * returns 1 else return 0.
1112 **/
1113 static uint32_t
1114 lpfc_mac_addr_match(uint8_t *mac_addr, struct fcf_record *new_fcf_record)
1115 {
1116 if (mac_addr[0] != bf_get(lpfc_fcf_record_mac_0, new_fcf_record))
1117 return 0;
1118 if (mac_addr[1] != bf_get(lpfc_fcf_record_mac_1, new_fcf_record))
1119 return 0;
1120 if (mac_addr[2] != bf_get(lpfc_fcf_record_mac_2, new_fcf_record))
1121 return 0;
1122 if (mac_addr[3] != bf_get(lpfc_fcf_record_mac_3, new_fcf_record))
1123 return 0;
1124 if (mac_addr[4] != bf_get(lpfc_fcf_record_mac_4, new_fcf_record))
1125 return 0;
1126 if (mac_addr[5] != bf_get(lpfc_fcf_record_mac_5, new_fcf_record))
1127 return 0;
1128 return 1;
1129 }
1130
1131 static bool
1132 lpfc_vlan_id_match(uint16_t curr_vlan_id, uint16_t new_vlan_id)
1133 {
1134 return (curr_vlan_id == new_vlan_id);
1135 }
1136
1137 /**
1138 * lpfc_copy_fcf_record - Copy fcf information to lpfc_hba.
1139 * @fcf: pointer to driver fcf record.
1140 * @new_fcf_record: pointer to fcf record.
1141 *
1142 * This routine copies the FCF information from the FCF
1143 * record to lpfc_hba data structure.
1144 **/
1145 static void
1146 lpfc_copy_fcf_record(struct lpfc_fcf_rec *fcf_rec,
1147 struct fcf_record *new_fcf_record)
1148 {
1149 /* Fabric name */
1150 fcf_rec->fabric_name[0] =
1151 bf_get(lpfc_fcf_record_fab_name_0, new_fcf_record);
1152 fcf_rec->fabric_name[1] =
1153 bf_get(lpfc_fcf_record_fab_name_1, new_fcf_record);
1154 fcf_rec->fabric_name[2] =
1155 bf_get(lpfc_fcf_record_fab_name_2, new_fcf_record);
1156 fcf_rec->fabric_name[3] =
1157 bf_get(lpfc_fcf_record_fab_name_3, new_fcf_record);
1158 fcf_rec->fabric_name[4] =
1159 bf_get(lpfc_fcf_record_fab_name_4, new_fcf_record);
1160 fcf_rec->fabric_name[5] =
1161 bf_get(lpfc_fcf_record_fab_name_5, new_fcf_record);
1162 fcf_rec->fabric_name[6] =
1163 bf_get(lpfc_fcf_record_fab_name_6, new_fcf_record);
1164 fcf_rec->fabric_name[7] =
1165 bf_get(lpfc_fcf_record_fab_name_7, new_fcf_record);
1166 /* Mac address */
1167 fcf_rec->mac_addr[0] = bf_get(lpfc_fcf_record_mac_0, new_fcf_record);
1168 fcf_rec->mac_addr[1] = bf_get(lpfc_fcf_record_mac_1, new_fcf_record);
1169 fcf_rec->mac_addr[2] = bf_get(lpfc_fcf_record_mac_2, new_fcf_record);
1170 fcf_rec->mac_addr[3] = bf_get(lpfc_fcf_record_mac_3, new_fcf_record);
1171 fcf_rec->mac_addr[4] = bf_get(lpfc_fcf_record_mac_4, new_fcf_record);
1172 fcf_rec->mac_addr[5] = bf_get(lpfc_fcf_record_mac_5, new_fcf_record);
1173 /* FCF record index */
1174 fcf_rec->fcf_indx = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record);
1175 /* FCF record priority */
1176 fcf_rec->priority = new_fcf_record->fip_priority;
1177 /* Switch name */
1178 fcf_rec->switch_name[0] =
1179 bf_get(lpfc_fcf_record_switch_name_0, new_fcf_record);
1180 fcf_rec->switch_name[1] =
1181 bf_get(lpfc_fcf_record_switch_name_1, new_fcf_record);
1182 fcf_rec->switch_name[2] =
1183 bf_get(lpfc_fcf_record_switch_name_2, new_fcf_record);
1184 fcf_rec->switch_name[3] =
1185 bf_get(lpfc_fcf_record_switch_name_3, new_fcf_record);
1186 fcf_rec->switch_name[4] =
1187 bf_get(lpfc_fcf_record_switch_name_4, new_fcf_record);
1188 fcf_rec->switch_name[5] =
1189 bf_get(lpfc_fcf_record_switch_name_5, new_fcf_record);
1190 fcf_rec->switch_name[6] =
1191 bf_get(lpfc_fcf_record_switch_name_6, new_fcf_record);
1192 fcf_rec->switch_name[7] =
1193 bf_get(lpfc_fcf_record_switch_name_7, new_fcf_record);
1194 }
1195
1196 /**
1197 * lpfc_update_fcf_record - Update driver fcf record
1198 * @phba: pointer to lpfc hba data structure.
1199 * @fcf_rec: pointer to driver fcf record.
1200 * @new_fcf_record: pointer to hba fcf record.
1201 * @addr_mode: address mode to be set to the driver fcf record.
1202 * @vlan_id: vlan tag to be set to the driver fcf record.
1203 * @flag: flag bits to be set to the driver fcf record.
1204 *
1205 * This routine updates the driver FCF record from the new HBA FCF record
1206 * together with the address mode, vlan_id, and other informations. This
1207 * routine is called with the host lock held.
1208 **/
1209 static void
1210 __lpfc_update_fcf_record(struct lpfc_hba *phba, struct lpfc_fcf_rec *fcf_rec,
1211 struct fcf_record *new_fcf_record, uint32_t addr_mode,
1212 uint16_t vlan_id, uint32_t flag)
1213 {
1214 /* Copy the fields from the HBA's FCF record */
1215 lpfc_copy_fcf_record(fcf_rec, new_fcf_record);
1216 /* Update other fields of driver FCF record */
1217 fcf_rec->addr_mode = addr_mode;
1218 fcf_rec->vlan_id = vlan_id;
1219 fcf_rec->flag |= (flag | RECORD_VALID);
1220 }
1221
1222 /**
1223 * lpfc_register_fcf - Register the FCF with hba.
1224 * @phba: pointer to lpfc hba data structure.
1225 *
1226 * This routine issues a register fcfi mailbox command to register
1227 * the fcf with HBA.
1228 **/
1229 static void
1230 lpfc_register_fcf(struct lpfc_hba *phba)
1231 {
1232 LPFC_MBOXQ_t *fcf_mbxq;
1233 int rc;
1234 unsigned long flags;
1235
1236 spin_lock_irqsave(&phba->hbalock, flags);
1237
1238 /* If the FCF is not availabe do nothing. */
1239 if (!(phba->fcf.fcf_flag & FCF_AVAILABLE)) {
1240 phba->hba_flag &= ~FCF_DISC_INPROGRESS;
1241 spin_unlock_irqrestore(&phba->hbalock, flags);
1242 return;
1243 }
1244
1245 /* The FCF is already registered, start discovery */
1246 if (phba->fcf.fcf_flag & FCF_REGISTERED) {
1247 phba->fcf.fcf_flag |= (FCF_SCAN_DONE | FCF_IN_USE);
1248 phba->hba_flag &= ~FCF_DISC_INPROGRESS;
1249 spin_unlock_irqrestore(&phba->hbalock, flags);
1250 if (phba->pport->port_state != LPFC_FLOGI)
1251 lpfc_initial_flogi(phba->pport);
1252 return;
1253 }
1254 spin_unlock_irqrestore(&phba->hbalock, flags);
1255
1256 fcf_mbxq = mempool_alloc(phba->mbox_mem_pool,
1257 GFP_KERNEL);
1258 if (!fcf_mbxq) {
1259 spin_lock_irqsave(&phba->hbalock, flags);
1260 phba->hba_flag &= ~FCF_DISC_INPROGRESS;
1261 spin_unlock_irqrestore(&phba->hbalock, flags);
1262 return;
1263 }
1264
1265 lpfc_reg_fcfi(phba, fcf_mbxq);
1266 fcf_mbxq->vport = phba->pport;
1267 fcf_mbxq->mbox_cmpl = lpfc_mbx_cmpl_reg_fcfi;
1268 rc = lpfc_sli_issue_mbox(phba, fcf_mbxq, MBX_NOWAIT);
1269 if (rc == MBX_NOT_FINISHED) {
1270 spin_lock_irqsave(&phba->hbalock, flags);
1271 phba->hba_flag &= ~FCF_DISC_INPROGRESS;
1272 spin_unlock_irqrestore(&phba->hbalock, flags);
1273 mempool_free(fcf_mbxq, phba->mbox_mem_pool);
1274 }
1275
1276 return;
1277 }
1278
1279 /**
1280 * lpfc_match_fcf_conn_list - Check if the FCF record can be used for discovery.
1281 * @phba: pointer to lpfc hba data structure.
1282 * @new_fcf_record: pointer to fcf record.
1283 * @boot_flag: Indicates if this record used by boot bios.
1284 * @addr_mode: The address mode to be used by this FCF
1285 * @vlan_id: The vlan id to be used as vlan tagging by this FCF.
1286 *
1287 * This routine compare the fcf record with connect list obtained from the
1288 * config region to decide if this FCF can be used for SAN discovery. It returns
1289 * 1 if this record can be used for SAN discovery else return zero. If this FCF
1290 * record can be used for SAN discovery, the boot_flag will indicate if this FCF
1291 * is used by boot bios and addr_mode will indicate the addressing mode to be
1292 * used for this FCF when the function returns.
1293 * If the FCF record need to be used with a particular vlan id, the vlan is
1294 * set in the vlan_id on return of the function. If not VLAN tagging need to
1295 * be used with the FCF vlan_id will be set to 0xFFFF;
1296 **/
1297 static int
1298 lpfc_match_fcf_conn_list(struct lpfc_hba *phba,
1299 struct fcf_record *new_fcf_record,
1300 uint32_t *boot_flag, uint32_t *addr_mode,
1301 uint16_t *vlan_id)
1302 {
1303 struct lpfc_fcf_conn_entry *conn_entry;
1304 int i, j, fcf_vlan_id = 0;
1305
1306 /* Find the lowest VLAN id in the FCF record */
1307 for (i = 0; i < 512; i++) {
1308 if (new_fcf_record->vlan_bitmap[i]) {
1309 fcf_vlan_id = i * 8;
1310 j = 0;
1311 while (!((new_fcf_record->vlan_bitmap[i] >> j) & 1)) {
1312 j++;
1313 fcf_vlan_id++;
1314 }
1315 break;
1316 }
1317 }
1318
1319 /* If FCF not available return 0 */
1320 if (!bf_get(lpfc_fcf_record_fcf_avail, new_fcf_record) ||
1321 !bf_get(lpfc_fcf_record_fcf_valid, new_fcf_record))
1322 return 0;
1323
1324 if (!(phba->hba_flag & HBA_FIP_SUPPORT)) {
1325 *boot_flag = 0;
1326 *addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov,
1327 new_fcf_record);
1328 if (phba->valid_vlan)
1329 *vlan_id = phba->vlan_id;
1330 else
1331 *vlan_id = 0xFFFF;
1332 return 1;
1333 }
1334
1335 /*
1336 * If there are no FCF connection table entry, driver connect to all
1337 * FCFs.
1338 */
1339 if (list_empty(&phba->fcf_conn_rec_list)) {
1340 *boot_flag = 0;
1341 *addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov,
1342 new_fcf_record);
1343
1344 /*
1345 * When there are no FCF connect entries, use driver's default
1346 * addressing mode - FPMA.
1347 */
1348 if (*addr_mode & LPFC_FCF_FPMA)
1349 *addr_mode = LPFC_FCF_FPMA;
1350
1351 /* If FCF record report a vlan id use that vlan id */
1352 if (fcf_vlan_id)
1353 *vlan_id = fcf_vlan_id;
1354 else
1355 *vlan_id = 0xFFFF;
1356 return 1;
1357 }
1358
1359 list_for_each_entry(conn_entry,
1360 &phba->fcf_conn_rec_list, list) {
1361 if (!(conn_entry->conn_rec.flags & FCFCNCT_VALID))
1362 continue;
1363
1364 if ((conn_entry->conn_rec.flags & FCFCNCT_FBNM_VALID) &&
1365 !lpfc_fab_name_match(conn_entry->conn_rec.fabric_name,
1366 new_fcf_record))
1367 continue;
1368 if ((conn_entry->conn_rec.flags & FCFCNCT_SWNM_VALID) &&
1369 !lpfc_sw_name_match(conn_entry->conn_rec.switch_name,
1370 new_fcf_record))
1371 continue;
1372 if (conn_entry->conn_rec.flags & FCFCNCT_VLAN_VALID) {
1373 /*
1374 * If the vlan bit map does not have the bit set for the
1375 * vlan id to be used, then it is not a match.
1376 */
1377 if (!(new_fcf_record->vlan_bitmap
1378 [conn_entry->conn_rec.vlan_tag / 8] &
1379 (1 << (conn_entry->conn_rec.vlan_tag % 8))))
1380 continue;
1381 }
1382
1383 /*
1384 * If connection record does not support any addressing mode,
1385 * skip the FCF record.
1386 */
1387 if (!(bf_get(lpfc_fcf_record_mac_addr_prov, new_fcf_record)
1388 & (LPFC_FCF_FPMA | LPFC_FCF_SPMA)))
1389 continue;
1390
1391 /*
1392 * Check if the connection record specifies a required
1393 * addressing mode.
1394 */
1395 if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) &&
1396 !(conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED)) {
1397
1398 /*
1399 * If SPMA required but FCF not support this continue.
1400 */
1401 if ((conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) &&
1402 !(bf_get(lpfc_fcf_record_mac_addr_prov,
1403 new_fcf_record) & LPFC_FCF_SPMA))
1404 continue;
1405
1406 /*
1407 * If FPMA required but FCF not support this continue.
1408 */
1409 if (!(conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) &&
1410 !(bf_get(lpfc_fcf_record_mac_addr_prov,
1411 new_fcf_record) & LPFC_FCF_FPMA))
1412 continue;
1413 }
1414
1415 /*
1416 * This fcf record matches filtering criteria.
1417 */
1418 if (conn_entry->conn_rec.flags & FCFCNCT_BOOT)
1419 *boot_flag = 1;
1420 else
1421 *boot_flag = 0;
1422
1423 /*
1424 * If user did not specify any addressing mode, or if the
1425 * prefered addressing mode specified by user is not supported
1426 * by FCF, allow fabric to pick the addressing mode.
1427 */
1428 *addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov,
1429 new_fcf_record);
1430 /*
1431 * If the user specified a required address mode, assign that
1432 * address mode
1433 */
1434 if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) &&
1435 (!(conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED)))
1436 *addr_mode = (conn_entry->conn_rec.flags &
1437 FCFCNCT_AM_SPMA) ?
1438 LPFC_FCF_SPMA : LPFC_FCF_FPMA;
1439 /*
1440 * If the user specified a prefered address mode, use the
1441 * addr mode only if FCF support the addr_mode.
1442 */
1443 else if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) &&
1444 (conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED) &&
1445 (conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) &&
1446 (*addr_mode & LPFC_FCF_SPMA))
1447 *addr_mode = LPFC_FCF_SPMA;
1448 else if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) &&
1449 (conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED) &&
1450 !(conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) &&
1451 (*addr_mode & LPFC_FCF_FPMA))
1452 *addr_mode = LPFC_FCF_FPMA;
1453
1454 /* If matching connect list has a vlan id, use it */
1455 if (conn_entry->conn_rec.flags & FCFCNCT_VLAN_VALID)
1456 *vlan_id = conn_entry->conn_rec.vlan_tag;
1457 /*
1458 * If no vlan id is specified in connect list, use the vlan id
1459 * in the FCF record
1460 */
1461 else if (fcf_vlan_id)
1462 *vlan_id = fcf_vlan_id;
1463 else
1464 *vlan_id = 0xFFFF;
1465
1466 return 1;
1467 }
1468
1469 return 0;
1470 }
1471
1472 /**
1473 * lpfc_check_pending_fcoe_event - Check if there is pending fcoe event.
1474 * @phba: pointer to lpfc hba data structure.
1475 * @unreg_fcf: Unregister FCF if FCF table need to be re-scaned.
1476 *
1477 * This function check if there is any fcoe event pending while driver
1478 * scan FCF entries. If there is any pending event, it will restart the
1479 * FCF saning and return 1 else return 0.
1480 */
1481 int
1482 lpfc_check_pending_fcoe_event(struct lpfc_hba *phba, uint8_t unreg_fcf)
1483 {
1484 /*
1485 * If the Link is up and no FCoE events while in the
1486 * FCF discovery, no need to restart FCF discovery.
1487 */
1488 if ((phba->link_state >= LPFC_LINK_UP) &&
1489 (phba->fcoe_eventtag == phba->fcoe_eventtag_at_fcf_scan))
1490 return 0;
1491
1492 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
1493 "2768 Pending link or FCF event during current "
1494 "handling of the previous event: link_state:x%x, "
1495 "evt_tag_at_scan:x%x, evt_tag_current:x%x\n",
1496 phba->link_state, phba->fcoe_eventtag_at_fcf_scan,
1497 phba->fcoe_eventtag);
1498
1499 spin_lock_irq(&phba->hbalock);
1500 phba->fcf.fcf_flag &= ~FCF_AVAILABLE;
1501 spin_unlock_irq(&phba->hbalock);
1502
1503 if (phba->link_state >= LPFC_LINK_UP) {
1504 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY,
1505 "2780 Restart FCF table scan due to "
1506 "pending FCF event:evt_tag_at_scan:x%x, "
1507 "evt_tag_current:x%x\n",
1508 phba->fcoe_eventtag_at_fcf_scan,
1509 phba->fcoe_eventtag);
1510 lpfc_sli4_fcf_scan_read_fcf_rec(phba, LPFC_FCOE_FCF_GET_FIRST);
1511 } else {
1512 /*
1513 * Do not continue FCF discovery and clear FCF_DISC_INPROGRESS
1514 * flag
1515 */
1516 spin_lock_irq(&phba->hbalock);
1517 phba->hba_flag &= ~FCF_DISC_INPROGRESS;
1518 phba->fcf.fcf_flag &= ~(FCF_REDISC_FOV | FCF_DISCOVERY);
1519 spin_unlock_irq(&phba->hbalock);
1520 }
1521
1522 /* Unregister the currently registered FCF if required */
1523 if (unreg_fcf) {
1524 spin_lock_irq(&phba->hbalock);
1525 phba->fcf.fcf_flag &= ~FCF_REGISTERED;
1526 spin_unlock_irq(&phba->hbalock);
1527 lpfc_sli4_unregister_fcf(phba);
1528 }
1529 return 1;
1530 }
1531
1532 /**
1533 * lpfc_sli4_fcf_rec_mbox_parse - parse non-embedded fcf record mailbox command
1534 * @phba: pointer to lpfc hba data structure.
1535 * @mboxq: pointer to mailbox object.
1536 * @next_fcf_index: pointer to holder of next fcf index.
1537 *
1538 * This routine parses the non-embedded fcf mailbox command by performing the
1539 * necessarily error checking, non-embedded read FCF record mailbox command
1540 * SGE parsing, and endianness swapping.
1541 *
1542 * Returns the pointer to the new FCF record in the non-embedded mailbox
1543 * command DMA memory if successfully, other NULL.
1544 */
1545 static struct fcf_record *
1546 lpfc_sli4_fcf_rec_mbox_parse(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq,
1547 uint16_t *next_fcf_index)
1548 {
1549 void *virt_addr;
1550 dma_addr_t phys_addr;
1551 struct lpfc_mbx_sge sge;
1552 struct lpfc_mbx_read_fcf_tbl *read_fcf;
1553 uint32_t shdr_status, shdr_add_status;
1554 union lpfc_sli4_cfg_shdr *shdr;
1555 struct fcf_record *new_fcf_record;
1556
1557 /* Get the first SGE entry from the non-embedded DMA memory. This
1558 * routine only uses a single SGE.
1559 */
1560 lpfc_sli4_mbx_sge_get(mboxq, 0, &sge);
1561 phys_addr = getPaddr(sge.pa_hi, sge.pa_lo);
1562 if (unlikely(!mboxq->sge_array)) {
1563 lpfc_printf_log(phba, KERN_ERR, LOG_MBOX,
1564 "2524 Failed to get the non-embedded SGE "
1565 "virtual address\n");
1566 return NULL;
1567 }
1568 virt_addr = mboxq->sge_array->addr[0];
1569
1570 shdr = (union lpfc_sli4_cfg_shdr *)virt_addr;
1571 shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
1572 shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
1573 if (shdr_status || shdr_add_status) {
1574 if (shdr_status == STATUS_FCF_TABLE_EMPTY)
1575 lpfc_printf_log(phba, KERN_ERR, LOG_FIP,
1576 "2726 READ_FCF_RECORD Indicates empty "
1577 "FCF table.\n");
1578 else
1579 lpfc_printf_log(phba, KERN_ERR, LOG_FIP,
1580 "2521 READ_FCF_RECORD mailbox failed "
1581 "with status x%x add_status x%x, "
1582 "mbx\n", shdr_status, shdr_add_status);
1583 return NULL;
1584 }
1585
1586 /* Interpreting the returned information of the FCF record */
1587 read_fcf = (struct lpfc_mbx_read_fcf_tbl *)virt_addr;
1588 lpfc_sli_pcimem_bcopy(read_fcf, read_fcf,
1589 sizeof(struct lpfc_mbx_read_fcf_tbl));
1590 *next_fcf_index = bf_get(lpfc_mbx_read_fcf_tbl_nxt_vindx, read_fcf);
1591 new_fcf_record = (struct fcf_record *)(virt_addr +
1592 sizeof(struct lpfc_mbx_read_fcf_tbl));
1593 lpfc_sli_pcimem_bcopy(new_fcf_record, new_fcf_record,
1594 sizeof(struct fcf_record));
1595
1596 return new_fcf_record;
1597 }
1598
1599 /**
1600 * lpfc_sli4_log_fcf_record_info - Log the information of a fcf record
1601 * @phba: pointer to lpfc hba data structure.
1602 * @fcf_record: pointer to the fcf record.
1603 * @vlan_id: the lowest vlan identifier associated to this fcf record.
1604 * @next_fcf_index: the index to the next fcf record in hba's fcf table.
1605 *
1606 * This routine logs the detailed FCF record if the LOG_FIP loggin is
1607 * enabled.
1608 **/
1609 static void
1610 lpfc_sli4_log_fcf_record_info(struct lpfc_hba *phba,
1611 struct fcf_record *fcf_record,
1612 uint16_t vlan_id,
1613 uint16_t next_fcf_index)
1614 {
1615 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
1616 "2764 READ_FCF_RECORD:\n"
1617 "\tFCF_Index : x%x\n"
1618 "\tFCF_Avail : x%x\n"
1619 "\tFCF_Valid : x%x\n"
1620 "\tFIP_Priority : x%x\n"
1621 "\tMAC_Provider : x%x\n"
1622 "\tLowest VLANID : x%x\n"
1623 "\tFCF_MAC Addr : x%x:%x:%x:%x:%x:%x\n"
1624 "\tFabric_Name : x%x:%x:%x:%x:%x:%x:%x:%x\n"
1625 "\tSwitch_Name : x%x:%x:%x:%x:%x:%x:%x:%x\n"
1626 "\tNext_FCF_Index: x%x\n",
1627 bf_get(lpfc_fcf_record_fcf_index, fcf_record),
1628 bf_get(lpfc_fcf_record_fcf_avail, fcf_record),
1629 bf_get(lpfc_fcf_record_fcf_valid, fcf_record),
1630 fcf_record->fip_priority,
1631 bf_get(lpfc_fcf_record_mac_addr_prov, fcf_record),
1632 vlan_id,
1633 bf_get(lpfc_fcf_record_mac_0, fcf_record),
1634 bf_get(lpfc_fcf_record_mac_1, fcf_record),
1635 bf_get(lpfc_fcf_record_mac_2, fcf_record),
1636 bf_get(lpfc_fcf_record_mac_3, fcf_record),
1637 bf_get(lpfc_fcf_record_mac_4, fcf_record),
1638 bf_get(lpfc_fcf_record_mac_5, fcf_record),
1639 bf_get(lpfc_fcf_record_fab_name_0, fcf_record),
1640 bf_get(lpfc_fcf_record_fab_name_1, fcf_record),
1641 bf_get(lpfc_fcf_record_fab_name_2, fcf_record),
1642 bf_get(lpfc_fcf_record_fab_name_3, fcf_record),
1643 bf_get(lpfc_fcf_record_fab_name_4, fcf_record),
1644 bf_get(lpfc_fcf_record_fab_name_5, fcf_record),
1645 bf_get(lpfc_fcf_record_fab_name_6, fcf_record),
1646 bf_get(lpfc_fcf_record_fab_name_7, fcf_record),
1647 bf_get(lpfc_fcf_record_switch_name_0, fcf_record),
1648 bf_get(lpfc_fcf_record_switch_name_1, fcf_record),
1649 bf_get(lpfc_fcf_record_switch_name_2, fcf_record),
1650 bf_get(lpfc_fcf_record_switch_name_3, fcf_record),
1651 bf_get(lpfc_fcf_record_switch_name_4, fcf_record),
1652 bf_get(lpfc_fcf_record_switch_name_5, fcf_record),
1653 bf_get(lpfc_fcf_record_switch_name_6, fcf_record),
1654 bf_get(lpfc_fcf_record_switch_name_7, fcf_record),
1655 next_fcf_index);
1656 }
1657
1658 /**
1659 * lpfc_mbx_cmpl_fcf_scan_read_fcf_rec - fcf scan read_fcf mbox cmpl handler.
1660 * @phba: pointer to lpfc hba data structure.
1661 * @mboxq: pointer to mailbox object.
1662 *
1663 * This function iterates through all the fcf records available in
1664 * HBA and chooses the optimal FCF record for discovery. After finding
1665 * the FCF for discovery it registers the FCF record and kicks start
1666 * discovery.
1667 * If FCF_IN_USE flag is set in currently used FCF, the routine tries to
1668 * use an FCF record which matches fabric name and mac address of the
1669 * currently used FCF record.
1670 * If the driver supports only one FCF, it will try to use the FCF record
1671 * used by BOOT_BIOS.
1672 */
1673 void
1674 lpfc_mbx_cmpl_fcf_scan_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
1675 {
1676 struct fcf_record *new_fcf_record;
1677 uint32_t boot_flag, addr_mode;
1678 uint16_t fcf_index, next_fcf_index;
1679 struct lpfc_fcf_rec *fcf_rec = NULL;
1680 uint16_t vlan_id;
1681 int rc;
1682
1683 /* If there is pending FCoE event restart FCF table scan */
1684 if (lpfc_check_pending_fcoe_event(phba, 0)) {
1685 lpfc_sli4_mbox_cmd_free(phba, mboxq);
1686 return;
1687 }
1688
1689 /* Parse the FCF record from the non-embedded mailbox command */
1690 new_fcf_record = lpfc_sli4_fcf_rec_mbox_parse(phba, mboxq,
1691 &next_fcf_index);
1692 if (!new_fcf_record) {
1693 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
1694 "2765 Mailbox command READ_FCF_RECORD "
1695 "failed to retrieve a FCF record.\n");
1696 /* Let next new FCF event trigger fast failover */
1697 spin_lock_irq(&phba->hbalock);
1698 phba->hba_flag &= ~FCF_DISC_INPROGRESS;
1699 spin_unlock_irq(&phba->hbalock);
1700 lpfc_sli4_mbox_cmd_free(phba, mboxq);
1701 return;
1702 }
1703
1704 /* Check the FCF record against the connection list */
1705 rc = lpfc_match_fcf_conn_list(phba, new_fcf_record, &boot_flag,
1706 &addr_mode, &vlan_id);
1707
1708 /* Log the FCF record information if turned on */
1709 lpfc_sli4_log_fcf_record_info(phba, new_fcf_record, vlan_id,
1710 next_fcf_index);
1711
1712 /*
1713 * If the fcf record does not match with connect list entries
1714 * read the next entry; otherwise, this is an eligible FCF
1715 * record for round robin FCF failover.
1716 */
1717 if (!rc) {
1718 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
1719 "2781 FCF record fcf_index:x%x failed FCF "
1720 "connection list check, fcf_avail:x%x, "
1721 "fcf_valid:x%x\n",
1722 bf_get(lpfc_fcf_record_fcf_index,
1723 new_fcf_record),
1724 bf_get(lpfc_fcf_record_fcf_avail,
1725 new_fcf_record),
1726 bf_get(lpfc_fcf_record_fcf_valid,
1727 new_fcf_record));
1728 goto read_next_fcf;
1729 } else {
1730 fcf_index = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record);
1731 rc = lpfc_sli4_fcf_rr_index_set(phba, fcf_index);
1732 if (rc)
1733 goto read_next_fcf;
1734 }
1735
1736 /*
1737 * If this is not the first FCF discovery of the HBA, use last
1738 * FCF record for the discovery. The condition that a rescan
1739 * matches the in-use FCF record: fabric name, switch name, mac
1740 * address, and vlan_id.
1741 */
1742 spin_lock_irq(&phba->hbalock);
1743 if (phba->fcf.fcf_flag & FCF_IN_USE) {
1744 if (lpfc_fab_name_match(phba->fcf.current_rec.fabric_name,
1745 new_fcf_record) &&
1746 lpfc_sw_name_match(phba->fcf.current_rec.switch_name,
1747 new_fcf_record) &&
1748 lpfc_mac_addr_match(phba->fcf.current_rec.mac_addr,
1749 new_fcf_record) &&
1750 lpfc_vlan_id_match(phba->fcf.current_rec.vlan_id,
1751 vlan_id)) {
1752 phba->fcf.fcf_flag |= FCF_AVAILABLE;
1753 if (phba->fcf.fcf_flag & FCF_REDISC_PEND)
1754 /* Stop FCF redisc wait timer if pending */
1755 __lpfc_sli4_stop_fcf_redisc_wait_timer(phba);
1756 else if (phba->fcf.fcf_flag & FCF_REDISC_FOV)
1757 /* If in fast failover, mark it's completed */
1758 phba->fcf.fcf_flag &= ~(FCF_REDISC_FOV |
1759 FCF_DISCOVERY);
1760 spin_unlock_irq(&phba->hbalock);
1761 goto out;
1762 }
1763 /*
1764 * Read next FCF record from HBA searching for the matching
1765 * with in-use record only if not during the fast failover
1766 * period. In case of fast failover period, it shall try to
1767 * determine whether the FCF record just read should be the
1768 * next candidate.
1769 */
1770 if (!(phba->fcf.fcf_flag & FCF_REDISC_FOV)) {
1771 spin_unlock_irq(&phba->hbalock);
1772 goto read_next_fcf;
1773 }
1774 }
1775 /*
1776 * Update on failover FCF record only if it's in FCF fast-failover
1777 * period; otherwise, update on current FCF record.
1778 */
1779 if (phba->fcf.fcf_flag & FCF_REDISC_FOV)
1780 fcf_rec = &phba->fcf.failover_rec;
1781 else
1782 fcf_rec = &phba->fcf.current_rec;
1783
1784 if (phba->fcf.fcf_flag & FCF_AVAILABLE) {
1785 /*
1786 * If the driver FCF record does not have boot flag
1787 * set and new hba fcf record has boot flag set, use
1788 * the new hba fcf record.
1789 */
1790 if (boot_flag && !(fcf_rec->flag & BOOT_ENABLE)) {
1791 /* Choose this FCF record */
1792 __lpfc_update_fcf_record(phba, fcf_rec, new_fcf_record,
1793 addr_mode, vlan_id, BOOT_ENABLE);
1794 spin_unlock_irq(&phba->hbalock);
1795 goto read_next_fcf;
1796 }
1797 /*
1798 * If the driver FCF record has boot flag set and the
1799 * new hba FCF record does not have boot flag, read
1800 * the next FCF record.
1801 */
1802 if (!boot_flag && (fcf_rec->flag & BOOT_ENABLE)) {
1803 spin_unlock_irq(&phba->hbalock);
1804 goto read_next_fcf;
1805 }
1806 /*
1807 * If the new hba FCF record has lower priority value
1808 * than the driver FCF record, use the new record.
1809 */
1810 if (new_fcf_record->fip_priority < fcf_rec->priority) {
1811 /* Choose this FCF record */
1812 __lpfc_update_fcf_record(phba, fcf_rec, new_fcf_record,
1813 addr_mode, vlan_id, 0);
1814 }
1815 spin_unlock_irq(&phba->hbalock);
1816 goto read_next_fcf;
1817 }
1818 /*
1819 * This is the first suitable FCF record, choose this record for
1820 * initial best-fit FCF.
1821 */
1822 if (fcf_rec) {
1823 __lpfc_update_fcf_record(phba, fcf_rec, new_fcf_record,
1824 addr_mode, vlan_id, (boot_flag ?
1825 BOOT_ENABLE : 0));
1826 phba->fcf.fcf_flag |= FCF_AVAILABLE;
1827 }
1828 spin_unlock_irq(&phba->hbalock);
1829 goto read_next_fcf;
1830
1831 read_next_fcf:
1832 lpfc_sli4_mbox_cmd_free(phba, mboxq);
1833 if (next_fcf_index == LPFC_FCOE_FCF_NEXT_NONE || next_fcf_index == 0) {
1834 if (phba->fcf.fcf_flag & FCF_REDISC_FOV) {
1835 /*
1836 * Case of FCF fast failover scan
1837 */
1838
1839 /*
1840 * It has not found any suitable FCF record, cancel
1841 * FCF scan inprogress, and do nothing
1842 */
1843 if (!(phba->fcf.failover_rec.flag & RECORD_VALID)) {
1844 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
1845 "2782 No suitable FCF record "
1846 "found during this round of "
1847 "post FCF rediscovery scan: "
1848 "fcf_evt_tag:x%x, fcf_index: "
1849 "x%x\n",
1850 phba->fcoe_eventtag_at_fcf_scan,
1851 bf_get(lpfc_fcf_record_fcf_index,
1852 new_fcf_record));
1853 /*
1854 * Let next new FCF event trigger fast
1855 * failover
1856 */
1857 spin_lock_irq(&phba->hbalock);
1858 phba->hba_flag &= ~FCF_DISC_INPROGRESS;
1859 spin_unlock_irq(&phba->hbalock);
1860 return;
1861 }
1862 /*
1863 * It has found a suitable FCF record that is not
1864 * the same as in-use FCF record, unregister the
1865 * in-use FCF record, replace the in-use FCF record
1866 * with the new FCF record, mark FCF fast failover
1867 * completed, and then start register the new FCF
1868 * record.
1869 */
1870
1871 /* Unregister the current in-use FCF record */
1872 lpfc_unregister_fcf(phba);
1873
1874 /* Replace in-use record with the new record */
1875 memcpy(&phba->fcf.current_rec,
1876 &phba->fcf.failover_rec,
1877 sizeof(struct lpfc_fcf_rec));
1878 /* mark the FCF fast failover completed */
1879 spin_lock_irq(&phba->hbalock);
1880 phba->fcf.fcf_flag &= ~FCF_REDISC_FOV;
1881 spin_unlock_irq(&phba->hbalock);
1882 /*
1883 * Set up the initial registered FCF index for FLOGI
1884 * round robin FCF failover.
1885 */
1886 phba->fcf.fcf_rr_init_indx =
1887 phba->fcf.failover_rec.fcf_indx;
1888 /* Register to the new FCF record */
1889 lpfc_register_fcf(phba);
1890 } else {
1891 /*
1892 * In case of transaction period to fast FCF failover,
1893 * do nothing when search to the end of the FCF table.
1894 */
1895 if ((phba->fcf.fcf_flag & FCF_REDISC_EVT) ||
1896 (phba->fcf.fcf_flag & FCF_REDISC_PEND))
1897 return;
1898 /*
1899 * Otherwise, initial scan or post linkdown rescan,
1900 * register with the best FCF record found so far
1901 * through the FCF scanning process.
1902 */
1903
1904 /* mark the initial FCF discovery completed */
1905 spin_lock_irq(&phba->hbalock);
1906 phba->fcf.fcf_flag &= ~FCF_INIT_DISC;
1907 spin_unlock_irq(&phba->hbalock);
1908 /*
1909 * Set up the initial registered FCF index for FLOGI
1910 * round robin FCF failover
1911 */
1912 phba->fcf.fcf_rr_init_indx =
1913 phba->fcf.current_rec.fcf_indx;
1914 /* Register to the new FCF record */
1915 lpfc_register_fcf(phba);
1916 }
1917 } else
1918 lpfc_sli4_fcf_scan_read_fcf_rec(phba, next_fcf_index);
1919 return;
1920
1921 out:
1922 lpfc_sli4_mbox_cmd_free(phba, mboxq);
1923 lpfc_register_fcf(phba);
1924
1925 return;
1926 }
1927
1928 /**
1929 * lpfc_mbx_cmpl_fcf_rr_read_fcf_rec - fcf round robin read_fcf mbox cmpl hdler
1930 * @phba: pointer to lpfc hba data structure.
1931 * @mboxq: pointer to mailbox object.
1932 *
1933 * This is the callback function for FLOGI failure round robin FCF failover
1934 * read FCF record mailbox command from the eligible FCF record bmask for
1935 * performing the failover. If the FCF read back is not valid/available, it
1936 * fails through to retrying FLOGI to the currently registered FCF again.
1937 * Otherwise, if the FCF read back is valid and available, it will set the
1938 * newly read FCF record to the failover FCF record, unregister currently
1939 * registered FCF record, copy the failover FCF record to the current
1940 * FCF record, and then register the current FCF record before proceeding
1941 * to trying FLOGI on the new failover FCF.
1942 */
1943 void
1944 lpfc_mbx_cmpl_fcf_rr_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
1945 {
1946 struct fcf_record *new_fcf_record;
1947 uint32_t boot_flag, addr_mode;
1948 uint16_t next_fcf_index;
1949 uint16_t current_fcf_index;
1950 uint16_t vlan_id;
1951
1952 /* If link state is not up, stop the round robin failover process */
1953 if (phba->link_state < LPFC_LINK_UP) {
1954 spin_lock_irq(&phba->hbalock);
1955 phba->fcf.fcf_flag &= ~FCF_DISCOVERY;
1956 spin_unlock_irq(&phba->hbalock);
1957 lpfc_sli4_mbox_cmd_free(phba, mboxq);
1958 return;
1959 }
1960
1961 /* Parse the FCF record from the non-embedded mailbox command */
1962 new_fcf_record = lpfc_sli4_fcf_rec_mbox_parse(phba, mboxq,
1963 &next_fcf_index);
1964 if (!new_fcf_record) {
1965 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
1966 "2766 Mailbox command READ_FCF_RECORD "
1967 "failed to retrieve a FCF record.\n");
1968 goto out;
1969 }
1970
1971 /* Get the needed parameters from FCF record */
1972 lpfc_match_fcf_conn_list(phba, new_fcf_record, &boot_flag,
1973 &addr_mode, &vlan_id);
1974
1975 /* Log the FCF record information if turned on */
1976 lpfc_sli4_log_fcf_record_info(phba, new_fcf_record, vlan_id,
1977 next_fcf_index);
1978
1979 /* Upload new FCF record to the failover FCF record */
1980 spin_lock_irq(&phba->hbalock);
1981 __lpfc_update_fcf_record(phba, &phba->fcf.failover_rec,
1982 new_fcf_record, addr_mode, vlan_id,
1983 (boot_flag ? BOOT_ENABLE : 0));
1984 spin_unlock_irq(&phba->hbalock);
1985
1986 current_fcf_index = phba->fcf.current_rec.fcf_indx;
1987
1988 /* Unregister the current in-use FCF record */
1989 lpfc_unregister_fcf(phba);
1990
1991 /* Replace in-use record with the new record */
1992 memcpy(&phba->fcf.current_rec, &phba->fcf.failover_rec,
1993 sizeof(struct lpfc_fcf_rec));
1994
1995 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
1996 "2783 FLOGI round robin FCF failover from FCF "
1997 "(index:x%x) to FCF (index:x%x).\n",
1998 current_fcf_index,
1999 bf_get(lpfc_fcf_record_fcf_index, new_fcf_record));
2000
2001 out:
2002 lpfc_sli4_mbox_cmd_free(phba, mboxq);
2003 lpfc_register_fcf(phba);
2004 }
2005
2006 /**
2007 * lpfc_mbx_cmpl_read_fcf_rec - read fcf completion handler.
2008 * @phba: pointer to lpfc hba data structure.
2009 * @mboxq: pointer to mailbox object.
2010 *
2011 * This is the callback function of read FCF record mailbox command for
2012 * updating the eligible FCF bmask for FLOGI failure round robin FCF
2013 * failover when a new FCF event happened. If the FCF read back is
2014 * valid/available and it passes the connection list check, it updates
2015 * the bmask for the eligible FCF record for round robin failover.
2016 */
2017 void
2018 lpfc_mbx_cmpl_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
2019 {
2020 struct fcf_record *new_fcf_record;
2021 uint32_t boot_flag, addr_mode;
2022 uint16_t fcf_index, next_fcf_index;
2023 uint16_t vlan_id;
2024 int rc;
2025
2026 /* If link state is not up, no need to proceed */
2027 if (phba->link_state < LPFC_LINK_UP)
2028 goto out;
2029
2030 /* If FCF discovery period is over, no need to proceed */
2031 if (phba->fcf.fcf_flag & FCF_DISCOVERY)
2032 goto out;
2033
2034 /* Parse the FCF record from the non-embedded mailbox command */
2035 new_fcf_record = lpfc_sli4_fcf_rec_mbox_parse(phba, mboxq,
2036 &next_fcf_index);
2037 if (!new_fcf_record) {
2038 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2039 "2767 Mailbox command READ_FCF_RECORD "
2040 "failed to retrieve a FCF record.\n");
2041 goto out;
2042 }
2043
2044 /* Check the connection list for eligibility */
2045 rc = lpfc_match_fcf_conn_list(phba, new_fcf_record, &boot_flag,
2046 &addr_mode, &vlan_id);
2047
2048 /* Log the FCF record information if turned on */
2049 lpfc_sli4_log_fcf_record_info(phba, new_fcf_record, vlan_id,
2050 next_fcf_index);
2051
2052 if (!rc)
2053 goto out;
2054
2055 /* Update the eligible FCF record index bmask */
2056 fcf_index = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record);
2057 rc = lpfc_sli4_fcf_rr_index_set(phba, fcf_index);
2058
2059 out:
2060 lpfc_sli4_mbox_cmd_free(phba, mboxq);
2061 }
2062
2063 /**
2064 * lpfc_init_vpi_cmpl - Completion handler for init_vpi mbox command.
2065 * @phba: pointer to lpfc hba data structure.
2066 * @mboxq: pointer to mailbox data structure.
2067 *
2068 * This function handles completion of init vpi mailbox command.
2069 */
2070 void
2071 lpfc_init_vpi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
2072 {
2073 struct lpfc_vport *vport = mboxq->vport;
2074 struct lpfc_nodelist *ndlp;
2075 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2076
2077 if (mboxq->u.mb.mbxStatus) {
2078 lpfc_printf_vlog(vport, KERN_ERR,
2079 LOG_MBOX,
2080 "2609 Init VPI mailbox failed 0x%x\n",
2081 mboxq->u.mb.mbxStatus);
2082 mempool_free(mboxq, phba->mbox_mem_pool);
2083 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
2084 return;
2085 }
2086 spin_lock_irq(shost->host_lock);
2087 vport->fc_flag &= ~FC_VPORT_NEEDS_INIT_VPI;
2088 spin_unlock_irq(shost->host_lock);
2089
2090 /* If this port is physical port or FDISC is done, do reg_vpi */
2091 if ((phba->pport == vport) || (vport->port_state == LPFC_FDISC)) {
2092 ndlp = lpfc_findnode_did(vport, Fabric_DID);
2093 if (!ndlp)
2094 lpfc_printf_vlog(vport, KERN_ERR,
2095 LOG_DISCOVERY,
2096 "2731 Cannot find fabric "
2097 "controller node\n");
2098 else
2099 lpfc_register_new_vport(phba, vport, ndlp);
2100 mempool_free(mboxq, phba->mbox_mem_pool);
2101 return;
2102 }
2103
2104 if (phba->link_flag & LS_NPIV_FAB_SUPPORTED)
2105 lpfc_initial_fdisc(vport);
2106 else {
2107 lpfc_vport_set_state(vport, FC_VPORT_NO_FABRIC_SUPP);
2108 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
2109 "2606 No NPIV Fabric support\n");
2110 }
2111 mempool_free(mboxq, phba->mbox_mem_pool);
2112 return;
2113 }
2114
2115 /**
2116 * lpfc_issue_init_vpi - Issue init_vpi mailbox command.
2117 * @vport: pointer to lpfc_vport data structure.
2118 *
2119 * This function issue a init_vpi mailbox command to initialize
2120 * VPI for the vport.
2121 */
2122 void
2123 lpfc_issue_init_vpi(struct lpfc_vport *vport)
2124 {
2125 LPFC_MBOXQ_t *mboxq;
2126 int rc;
2127
2128 mboxq = mempool_alloc(vport->phba->mbox_mem_pool, GFP_KERNEL);
2129 if (!mboxq) {
2130 lpfc_printf_vlog(vport, KERN_ERR,
2131 LOG_MBOX, "2607 Failed to allocate "
2132 "init_vpi mailbox\n");
2133 return;
2134 }
2135 lpfc_init_vpi(vport->phba, mboxq, vport->vpi);
2136 mboxq->vport = vport;
2137 mboxq->mbox_cmpl = lpfc_init_vpi_cmpl;
2138 rc = lpfc_sli_issue_mbox(vport->phba, mboxq, MBX_NOWAIT);
2139 if (rc == MBX_NOT_FINISHED) {
2140 lpfc_printf_vlog(vport, KERN_ERR,
2141 LOG_MBOX, "2608 Failed to issue init_vpi mailbox\n");
2142 mempool_free(mboxq, vport->phba->mbox_mem_pool);
2143 }
2144 }
2145
2146 /**
2147 * lpfc_start_fdiscs - send fdiscs for each vports on this port.
2148 * @phba: pointer to lpfc hba data structure.
2149 *
2150 * This function loops through the list of vports on the @phba and issues an
2151 * FDISC if possible.
2152 */
2153 void
2154 lpfc_start_fdiscs(struct lpfc_hba *phba)
2155 {
2156 struct lpfc_vport **vports;
2157 int i;
2158
2159 vports = lpfc_create_vport_work_array(phba);
2160 if (vports != NULL) {
2161 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
2162 if (vports[i]->port_type == LPFC_PHYSICAL_PORT)
2163 continue;
2164 /* There are no vpi for this vport */
2165 if (vports[i]->vpi > phba->max_vpi) {
2166 lpfc_vport_set_state(vports[i],
2167 FC_VPORT_FAILED);
2168 continue;
2169 }
2170 if (phba->fc_topology == TOPOLOGY_LOOP) {
2171 lpfc_vport_set_state(vports[i],
2172 FC_VPORT_LINKDOWN);
2173 continue;
2174 }
2175 if (vports[i]->fc_flag & FC_VPORT_NEEDS_INIT_VPI) {
2176 lpfc_issue_init_vpi(vports[i]);
2177 continue;
2178 }
2179 if (phba->link_flag & LS_NPIV_FAB_SUPPORTED)
2180 lpfc_initial_fdisc(vports[i]);
2181 else {
2182 lpfc_vport_set_state(vports[i],
2183 FC_VPORT_NO_FABRIC_SUPP);
2184 lpfc_printf_vlog(vports[i], KERN_ERR,
2185 LOG_ELS,
2186 "0259 No NPIV "
2187 "Fabric support\n");
2188 }
2189 }
2190 }
2191 lpfc_destroy_vport_work_array(phba, vports);
2192 }
2193
2194 void
2195 lpfc_mbx_cmpl_reg_vfi(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
2196 {
2197 struct lpfc_dmabuf *dmabuf = mboxq->context1;
2198 struct lpfc_vport *vport = mboxq->vport;
2199 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2200
2201 if (mboxq->u.mb.mbxStatus) {
2202 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
2203 "2018 REG_VFI mbxStatus error x%x "
2204 "HBA state x%x\n",
2205 mboxq->u.mb.mbxStatus, vport->port_state);
2206 if (phba->fc_topology == TOPOLOGY_LOOP) {
2207 /* FLOGI failed, use loop map to make discovery list */
2208 lpfc_disc_list_loopmap(vport);
2209 /* Start discovery */
2210 lpfc_disc_start(vport);
2211 goto fail_free_mem;
2212 }
2213 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
2214 goto fail_free_mem;
2215 }
2216 /* The VPI is implicitly registered when the VFI is registered */
2217 spin_lock_irq(shost->host_lock);
2218 vport->vpi_state |= LPFC_VPI_REGISTERED;
2219 vport->fc_flag |= FC_VFI_REGISTERED;
2220 vport->fc_flag &= ~FC_VPORT_NEEDS_REG_VPI;
2221 spin_unlock_irq(shost->host_lock);
2222
2223 if (vport->port_state == LPFC_FABRIC_CFG_LINK) {
2224 lpfc_start_fdiscs(phba);
2225 lpfc_do_scr_ns_plogi(phba, vport);
2226 }
2227
2228 fail_free_mem:
2229 mempool_free(mboxq, phba->mbox_mem_pool);
2230 lpfc_mbuf_free(phba, dmabuf->virt, dmabuf->phys);
2231 kfree(dmabuf);
2232 return;
2233 }
2234
2235 static void
2236 lpfc_mbx_cmpl_read_sparam(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
2237 {
2238 MAILBOX_t *mb = &pmb->u.mb;
2239 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) pmb->context1;
2240 struct lpfc_vport *vport = pmb->vport;
2241
2242
2243 /* Check for error */
2244 if (mb->mbxStatus) {
2245 /* READ_SPARAM mbox error <mbxStatus> state <hba_state> */
2246 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
2247 "0319 READ_SPARAM mbxStatus error x%x "
2248 "hba state x%x>\n",
2249 mb->mbxStatus, vport->port_state);
2250 lpfc_linkdown(phba);
2251 goto out;
2252 }
2253
2254 memcpy((uint8_t *) &vport->fc_sparam, (uint8_t *) mp->virt,
2255 sizeof (struct serv_parm));
2256 if (phba->cfg_soft_wwnn)
2257 u64_to_wwn(phba->cfg_soft_wwnn,
2258 vport->fc_sparam.nodeName.u.wwn);
2259 if (phba->cfg_soft_wwpn)
2260 u64_to_wwn(phba->cfg_soft_wwpn,
2261 vport->fc_sparam.portName.u.wwn);
2262 memcpy(&vport->fc_nodename, &vport->fc_sparam.nodeName,
2263 sizeof(vport->fc_nodename));
2264 memcpy(&vport->fc_portname, &vport->fc_sparam.portName,
2265 sizeof(vport->fc_portname));
2266 if (vport->port_type == LPFC_PHYSICAL_PORT) {
2267 memcpy(&phba->wwnn, &vport->fc_nodename, sizeof(phba->wwnn));
2268 memcpy(&phba->wwpn, &vport->fc_portname, sizeof(phba->wwnn));
2269 }
2270
2271 lpfc_mbuf_free(phba, mp->virt, mp->phys);
2272 kfree(mp);
2273 mempool_free(pmb, phba->mbox_mem_pool);
2274 return;
2275
2276 out:
2277 pmb->context1 = NULL;
2278 lpfc_mbuf_free(phba, mp->virt, mp->phys);
2279 kfree(mp);
2280 lpfc_issue_clear_la(phba, vport);
2281 mempool_free(pmb, phba->mbox_mem_pool);
2282 return;
2283 }
2284
2285 static void
2286 lpfc_mbx_process_link_up(struct lpfc_hba *phba, READ_LA_VAR *la)
2287 {
2288 struct lpfc_vport *vport = phba->pport;
2289 LPFC_MBOXQ_t *sparam_mbox, *cfglink_mbox = NULL;
2290 int i;
2291 struct lpfc_dmabuf *mp;
2292 int rc;
2293 struct fcf_record *fcf_record;
2294
2295 spin_lock_irq(&phba->hbalock);
2296 switch (la->UlnkSpeed) {
2297 case LA_1GHZ_LINK:
2298 phba->fc_linkspeed = LA_1GHZ_LINK;
2299 break;
2300 case LA_2GHZ_LINK:
2301 phba->fc_linkspeed = LA_2GHZ_LINK;
2302 break;
2303 case LA_4GHZ_LINK:
2304 phba->fc_linkspeed = LA_4GHZ_LINK;
2305 break;
2306 case LA_8GHZ_LINK:
2307 phba->fc_linkspeed = LA_8GHZ_LINK;
2308 break;
2309 case LA_10GHZ_LINK:
2310 phba->fc_linkspeed = LA_10GHZ_LINK;
2311 break;
2312 default:
2313 phba->fc_linkspeed = LA_UNKNW_LINK;
2314 break;
2315 }
2316
2317 phba->fc_topology = la->topology;
2318 phba->link_flag &= ~LS_NPIV_FAB_SUPPORTED;
2319
2320 if (phba->fc_topology == TOPOLOGY_LOOP) {
2321 phba->sli3_options &= ~LPFC_SLI3_NPIV_ENABLED;
2322
2323 /* if npiv is enabled and this adapter supports npiv log
2324 * a message that npiv is not supported in this topology
2325 */
2326 if (phba->cfg_enable_npiv && phba->max_vpi)
2327 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
2328 "1309 Link Up Event npiv not supported in loop "
2329 "topology\n");
2330 /* Get Loop Map information */
2331 if (la->il)
2332 vport->fc_flag |= FC_LBIT;
2333
2334 vport->fc_myDID = la->granted_AL_PA;
2335 i = la->un.lilpBde64.tus.f.bdeSize;
2336
2337 if (i == 0) {
2338 phba->alpa_map[0] = 0;
2339 } else {
2340 if (vport->cfg_log_verbose & LOG_LINK_EVENT) {
2341 int numalpa, j, k;
2342 union {
2343 uint8_t pamap[16];
2344 struct {
2345 uint32_t wd1;
2346 uint32_t wd2;
2347 uint32_t wd3;
2348 uint32_t wd4;
2349 } pa;
2350 } un;
2351 numalpa = phba->alpa_map[0];
2352 j = 0;
2353 while (j < numalpa) {
2354 memset(un.pamap, 0, 16);
2355 for (k = 1; j < numalpa; k++) {
2356 un.pamap[k - 1] =
2357 phba->alpa_map[j + 1];
2358 j++;
2359 if (k == 16)
2360 break;
2361 }
2362 /* Link Up Event ALPA map */
2363 lpfc_printf_log(phba,
2364 KERN_WARNING,
2365 LOG_LINK_EVENT,
2366 "1304 Link Up Event "
2367 "ALPA map Data: x%x "
2368 "x%x x%x x%x\n",
2369 un.pa.wd1, un.pa.wd2,
2370 un.pa.wd3, un.pa.wd4);
2371 }
2372 }
2373 }
2374 } else {
2375 if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)) {
2376 if (phba->max_vpi && phba->cfg_enable_npiv &&
2377 (phba->sli_rev == 3))
2378 phba->sli3_options |= LPFC_SLI3_NPIV_ENABLED;
2379 }
2380 vport->fc_myDID = phba->fc_pref_DID;
2381 vport->fc_flag |= FC_LBIT;
2382 }
2383 spin_unlock_irq(&phba->hbalock);
2384
2385 lpfc_linkup(phba);
2386 sparam_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2387 if (!sparam_mbox)
2388 goto out;
2389
2390 rc = lpfc_read_sparam(phba, sparam_mbox, 0);
2391 if (rc) {
2392 mempool_free(sparam_mbox, phba->mbox_mem_pool);
2393 goto out;
2394 }
2395 sparam_mbox->vport = vport;
2396 sparam_mbox->mbox_cmpl = lpfc_mbx_cmpl_read_sparam;
2397 rc = lpfc_sli_issue_mbox(phba, sparam_mbox, MBX_NOWAIT);
2398 if (rc == MBX_NOT_FINISHED) {
2399 mp = (struct lpfc_dmabuf *) sparam_mbox->context1;
2400 lpfc_mbuf_free(phba, mp->virt, mp->phys);
2401 kfree(mp);
2402 mempool_free(sparam_mbox, phba->mbox_mem_pool);
2403 goto out;
2404 }
2405
2406 if (!(phba->hba_flag & HBA_FCOE_SUPPORT)) {
2407 cfglink_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2408 if (!cfglink_mbox)
2409 goto out;
2410 vport->port_state = LPFC_LOCAL_CFG_LINK;
2411 lpfc_config_link(phba, cfglink_mbox);
2412 cfglink_mbox->vport = vport;
2413 cfglink_mbox->mbox_cmpl = lpfc_mbx_cmpl_local_config_link;
2414 rc = lpfc_sli_issue_mbox(phba, cfglink_mbox, MBX_NOWAIT);
2415 if (rc == MBX_NOT_FINISHED) {
2416 mempool_free(cfglink_mbox, phba->mbox_mem_pool);
2417 goto out;
2418 }
2419 } else {
2420 vport->port_state = LPFC_VPORT_UNKNOWN;
2421 /*
2422 * Add the driver's default FCF record at FCF index 0 now. This
2423 * is phase 1 implementation that support FCF index 0 and driver
2424 * defaults.
2425 */
2426 if (!(phba->hba_flag & HBA_FIP_SUPPORT)) {
2427 fcf_record = kzalloc(sizeof(struct fcf_record),
2428 GFP_KERNEL);
2429 if (unlikely(!fcf_record)) {
2430 lpfc_printf_log(phba, KERN_ERR,
2431 LOG_MBOX | LOG_SLI,
2432 "2554 Could not allocate memmory for "
2433 "fcf record\n");
2434 rc = -ENODEV;
2435 goto out;
2436 }
2437
2438 lpfc_sli4_build_dflt_fcf_record(phba, fcf_record,
2439 LPFC_FCOE_FCF_DEF_INDEX);
2440 rc = lpfc_sli4_add_fcf_record(phba, fcf_record);
2441 if (unlikely(rc)) {
2442 lpfc_printf_log(phba, KERN_ERR,
2443 LOG_MBOX | LOG_SLI,
2444 "2013 Could not manually add FCF "
2445 "record 0, status %d\n", rc);
2446 rc = -ENODEV;
2447 kfree(fcf_record);
2448 goto out;
2449 }
2450 kfree(fcf_record);
2451 }
2452 /*
2453 * The driver is expected to do FIP/FCF. Call the port
2454 * and get the FCF Table.
2455 */
2456 spin_lock_irq(&phba->hbalock);
2457 if (phba->hba_flag & FCF_DISC_INPROGRESS) {
2458 spin_unlock_irq(&phba->hbalock);
2459 return;
2460 }
2461 /* This is the initial FCF discovery scan */
2462 phba->fcf.fcf_flag |= FCF_INIT_DISC;
2463 spin_unlock_irq(&phba->hbalock);
2464 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY,
2465 "2778 Start FCF table scan at linkup\n");
2466
2467 rc = lpfc_sli4_fcf_scan_read_fcf_rec(phba,
2468 LPFC_FCOE_FCF_GET_FIRST);
2469 if (rc) {
2470 spin_lock_irq(&phba->hbalock);
2471 phba->fcf.fcf_flag &= ~FCF_INIT_DISC;
2472 spin_unlock_irq(&phba->hbalock);
2473 goto out;
2474 }
2475 }
2476
2477 return;
2478 out:
2479 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
2480 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
2481 "0263 Discovery Mailbox error: state: 0x%x : %p %p\n",
2482 vport->port_state, sparam_mbox, cfglink_mbox);
2483 lpfc_issue_clear_la(phba, vport);
2484 return;
2485 }
2486
2487 static void
2488 lpfc_enable_la(struct lpfc_hba *phba)
2489 {
2490 uint32_t control;
2491 struct lpfc_sli *psli = &phba->sli;
2492 spin_lock_irq(&phba->hbalock);
2493 psli->sli_flag |= LPFC_PROCESS_LA;
2494 if (phba->sli_rev <= LPFC_SLI_REV3) {
2495 control = readl(phba->HCregaddr);
2496 control |= HC_LAINT_ENA;
2497 writel(control, phba->HCregaddr);
2498 readl(phba->HCregaddr); /* flush */
2499 }
2500 spin_unlock_irq(&phba->hbalock);
2501 }
2502
2503 static void
2504 lpfc_mbx_issue_link_down(struct lpfc_hba *phba)
2505 {
2506 lpfc_linkdown(phba);
2507 lpfc_enable_la(phba);
2508 lpfc_unregister_unused_fcf(phba);
2509 /* turn on Link Attention interrupts - no CLEAR_LA needed */
2510 }
2511
2512
2513 /*
2514 * This routine handles processing a READ_LA mailbox
2515 * command upon completion. It is setup in the LPFC_MBOXQ
2516 * as the completion routine when the command is
2517 * handed off to the SLI layer.
2518 */
2519 void
2520 lpfc_mbx_cmpl_read_la(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
2521 {
2522 struct lpfc_vport *vport = pmb->vport;
2523 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2524 READ_LA_VAR *la;
2525 MAILBOX_t *mb = &pmb->u.mb;
2526 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
2527
2528 /* Unblock ELS traffic */
2529 phba->sli.ring[LPFC_ELS_RING].flag &= ~LPFC_STOP_IOCB_EVENT;
2530 /* Check for error */
2531 if (mb->mbxStatus) {
2532 lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT,
2533 "1307 READ_LA mbox error x%x state x%x\n",
2534 mb->mbxStatus, vport->port_state);
2535 lpfc_mbx_issue_link_down(phba);
2536 phba->link_state = LPFC_HBA_ERROR;
2537 goto lpfc_mbx_cmpl_read_la_free_mbuf;
2538 }
2539
2540 la = (READ_LA_VAR *) &pmb->u.mb.un.varReadLA;
2541
2542 memcpy(&phba->alpa_map[0], mp->virt, 128);
2543
2544 spin_lock_irq(shost->host_lock);
2545 if (la->pb)
2546 vport->fc_flag |= FC_BYPASSED_MODE;
2547 else
2548 vport->fc_flag &= ~FC_BYPASSED_MODE;
2549 spin_unlock_irq(shost->host_lock);
2550
2551 if ((phba->fc_eventTag < la->eventTag) ||
2552 (phba->fc_eventTag == la->eventTag)) {
2553 phba->fc_stat.LinkMultiEvent++;
2554 if (la->attType == AT_LINK_UP)
2555 if (phba->fc_eventTag != 0)
2556 lpfc_linkdown(phba);
2557 }
2558
2559 phba->fc_eventTag = la->eventTag;
2560 spin_lock_irq(&phba->hbalock);
2561 if (la->mm)
2562 phba->sli.sli_flag |= LPFC_MENLO_MAINT;
2563 else
2564 phba->sli.sli_flag &= ~LPFC_MENLO_MAINT;
2565 spin_unlock_irq(&phba->hbalock);
2566
2567 phba->link_events++;
2568 if (la->attType == AT_LINK_UP && (!la->mm)) {
2569 phba->fc_stat.LinkUp++;
2570 if (phba->link_flag & LS_LOOPBACK_MODE) {
2571 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
2572 "1306 Link Up Event in loop back mode "
2573 "x%x received Data: x%x x%x x%x x%x\n",
2574 la->eventTag, phba->fc_eventTag,
2575 la->granted_AL_PA, la->UlnkSpeed,
2576 phba->alpa_map[0]);
2577 } else {
2578 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
2579 "1303 Link Up Event x%x received "
2580 "Data: x%x x%x x%x x%x x%x x%x %d\n",
2581 la->eventTag, phba->fc_eventTag,
2582 la->granted_AL_PA, la->UlnkSpeed,
2583 phba->alpa_map[0],
2584 la->mm, la->fa,
2585 phba->wait_4_mlo_maint_flg);
2586 }
2587 lpfc_mbx_process_link_up(phba, la);
2588 } else if (la->attType == AT_LINK_DOWN) {
2589 phba->fc_stat.LinkDown++;
2590 if (phba->link_flag & LS_LOOPBACK_MODE) {
2591 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
2592 "1308 Link Down Event in loop back mode "
2593 "x%x received "
2594 "Data: x%x x%x x%x\n",
2595 la->eventTag, phba->fc_eventTag,
2596 phba->pport->port_state, vport->fc_flag);
2597 }
2598 else {
2599 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
2600 "1305 Link Down Event x%x received "
2601 "Data: x%x x%x x%x x%x x%x\n",
2602 la->eventTag, phba->fc_eventTag,
2603 phba->pport->port_state, vport->fc_flag,
2604 la->mm, la->fa);
2605 }
2606 lpfc_mbx_issue_link_down(phba);
2607 }
2608 if (la->mm && la->attType == AT_LINK_UP) {
2609 if (phba->link_state != LPFC_LINK_DOWN) {
2610 phba->fc_stat.LinkDown++;
2611 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
2612 "1312 Link Down Event x%x received "
2613 "Data: x%x x%x x%x\n",
2614 la->eventTag, phba->fc_eventTag,
2615 phba->pport->port_state, vport->fc_flag);
2616 lpfc_mbx_issue_link_down(phba);
2617 } else
2618 lpfc_enable_la(phba);
2619
2620 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
2621 "1310 Menlo Maint Mode Link up Event x%x rcvd "
2622 "Data: x%x x%x x%x\n",
2623 la->eventTag, phba->fc_eventTag,
2624 phba->pport->port_state, vport->fc_flag);
2625 /*
2626 * The cmnd that triggered this will be waiting for this
2627 * signal.
2628 */
2629 /* WAKEUP for MENLO_SET_MODE or MENLO_RESET command. */
2630 if (phba->wait_4_mlo_maint_flg) {
2631 phba->wait_4_mlo_maint_flg = 0;
2632 wake_up_interruptible(&phba->wait_4_mlo_m_q);
2633 }
2634 }
2635
2636 if (la->fa) {
2637 if (la->mm)
2638 lpfc_issue_clear_la(phba, vport);
2639 lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT,
2640 "1311 fa %d\n", la->fa);
2641 }
2642
2643 lpfc_mbx_cmpl_read_la_free_mbuf:
2644 lpfc_mbuf_free(phba, mp->virt, mp->phys);
2645 kfree(mp);
2646 mempool_free(pmb, phba->mbox_mem_pool);
2647 return;
2648 }
2649
2650 /*
2651 * This routine handles processing a REG_LOGIN mailbox
2652 * command upon completion. It is setup in the LPFC_MBOXQ
2653 * as the completion routine when the command is
2654 * handed off to the SLI layer.
2655 */
2656 void
2657 lpfc_mbx_cmpl_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
2658 {
2659 struct lpfc_vport *vport = pmb->vport;
2660 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
2661 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2;
2662
2663 pmb->context1 = NULL;
2664
2665 /* Good status, call state machine */
2666 lpfc_disc_state_machine(vport, ndlp, pmb, NLP_EVT_CMPL_REG_LOGIN);
2667 lpfc_mbuf_free(phba, mp->virt, mp->phys);
2668 kfree(mp);
2669 mempool_free(pmb, phba->mbox_mem_pool);
2670 /* decrement the node reference count held for this callback
2671 * function.
2672 */
2673 lpfc_nlp_put(ndlp);
2674
2675 return;
2676 }
2677
2678 static void
2679 lpfc_mbx_cmpl_unreg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
2680 {
2681 MAILBOX_t *mb = &pmb->u.mb;
2682 struct lpfc_vport *vport = pmb->vport;
2683 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2684
2685 switch (mb->mbxStatus) {
2686 case 0x0011:
2687 case 0x0020:
2688 case 0x9700:
2689 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
2690 "0911 cmpl_unreg_vpi, mb status = 0x%x\n",
2691 mb->mbxStatus);
2692 break;
2693 }
2694 spin_lock_irq(shost->host_lock);
2695 vport->vpi_state &= ~LPFC_VPI_REGISTERED;
2696 vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
2697 spin_unlock_irq(shost->host_lock);
2698 vport->unreg_vpi_cmpl = VPORT_OK;
2699 mempool_free(pmb, phba->mbox_mem_pool);
2700 /*
2701 * This shost reference might have been taken at the beginning of
2702 * lpfc_vport_delete()
2703 */
2704 if ((vport->load_flag & FC_UNLOADING) && (vport != phba->pport))
2705 scsi_host_put(shost);
2706 }
2707
2708 int
2709 lpfc_mbx_unreg_vpi(struct lpfc_vport *vport)
2710 {
2711 struct lpfc_hba *phba = vport->phba;
2712 LPFC_MBOXQ_t *mbox;
2713 int rc;
2714
2715 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2716 if (!mbox)
2717 return 1;
2718
2719 lpfc_unreg_vpi(phba, vport->vpi, mbox);
2720 mbox->vport = vport;
2721 mbox->mbox_cmpl = lpfc_mbx_cmpl_unreg_vpi;
2722 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
2723 if (rc == MBX_NOT_FINISHED) {
2724 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX | LOG_VPORT,
2725 "1800 Could not issue unreg_vpi\n");
2726 mempool_free(mbox, phba->mbox_mem_pool);
2727 vport->unreg_vpi_cmpl = VPORT_ERROR;
2728 return rc;
2729 }
2730 return 0;
2731 }
2732
2733 static void
2734 lpfc_mbx_cmpl_reg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
2735 {
2736 struct lpfc_vport *vport = pmb->vport;
2737 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2738 MAILBOX_t *mb = &pmb->u.mb;
2739
2740 switch (mb->mbxStatus) {
2741 case 0x0011:
2742 case 0x9601:
2743 case 0x9602:
2744 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
2745 "0912 cmpl_reg_vpi, mb status = 0x%x\n",
2746 mb->mbxStatus);
2747 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
2748 spin_lock_irq(shost->host_lock);
2749 vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
2750 spin_unlock_irq(shost->host_lock);
2751 vport->fc_myDID = 0;
2752 goto out;
2753 }
2754
2755 spin_lock_irq(shost->host_lock);
2756 vport->vpi_state |= LPFC_VPI_REGISTERED;
2757 vport->fc_flag &= ~FC_VPORT_NEEDS_REG_VPI;
2758 spin_unlock_irq(shost->host_lock);
2759 vport->num_disc_nodes = 0;
2760 /* go thru NPR list and issue ELS PLOGIs */
2761 if (vport->fc_npr_cnt)
2762 lpfc_els_disc_plogi(vport);
2763
2764 if (!vport->num_disc_nodes) {
2765 spin_lock_irq(shost->host_lock);
2766 vport->fc_flag &= ~FC_NDISC_ACTIVE;
2767 spin_unlock_irq(shost->host_lock);
2768 lpfc_can_disctmo(vport);
2769 }
2770 vport->port_state = LPFC_VPORT_READY;
2771
2772 out:
2773 mempool_free(pmb, phba->mbox_mem_pool);
2774 return;
2775 }
2776
2777 /**
2778 * lpfc_create_static_vport - Read HBA config region to create static vports.
2779 * @phba: pointer to lpfc hba data structure.
2780 *
2781 * This routine issue a DUMP mailbox command for config region 22 to get
2782 * the list of static vports to be created. The function create vports
2783 * based on the information returned from the HBA.
2784 **/
2785 void
2786 lpfc_create_static_vport(struct lpfc_hba *phba)
2787 {
2788 LPFC_MBOXQ_t *pmb = NULL;
2789 MAILBOX_t *mb;
2790 struct static_vport_info *vport_info;
2791 int rc = 0, i;
2792 struct fc_vport_identifiers vport_id;
2793 struct fc_vport *new_fc_vport;
2794 struct Scsi_Host *shost;
2795 struct lpfc_vport *vport;
2796 uint16_t offset = 0;
2797 uint8_t *vport_buff;
2798 struct lpfc_dmabuf *mp;
2799 uint32_t byte_count = 0;
2800
2801 pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2802 if (!pmb) {
2803 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
2804 "0542 lpfc_create_static_vport failed to"
2805 " allocate mailbox memory\n");
2806 return;
2807 }
2808
2809 mb = &pmb->u.mb;
2810
2811 vport_info = kzalloc(sizeof(struct static_vport_info), GFP_KERNEL);
2812 if (!vport_info) {
2813 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
2814 "0543 lpfc_create_static_vport failed to"
2815 " allocate vport_info\n");
2816 mempool_free(pmb, phba->mbox_mem_pool);
2817 return;
2818 }
2819
2820 vport_buff = (uint8_t *) vport_info;
2821 do {
2822 if (lpfc_dump_static_vport(phba, pmb, offset))
2823 goto out;
2824
2825 pmb->vport = phba->pport;
2826 rc = lpfc_sli_issue_mbox_wait(phba, pmb, LPFC_MBOX_TMO);
2827
2828 if ((rc != MBX_SUCCESS) || mb->mbxStatus) {
2829 lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
2830 "0544 lpfc_create_static_vport failed to"
2831 " issue dump mailbox command ret 0x%x "
2832 "status 0x%x\n",
2833 rc, mb->mbxStatus);
2834 goto out;
2835 }
2836
2837 if (phba->sli_rev == LPFC_SLI_REV4) {
2838 byte_count = pmb->u.mqe.un.mb_words[5];
2839 mp = (struct lpfc_dmabuf *) pmb->context2;
2840 if (byte_count > sizeof(struct static_vport_info) -
2841 offset)
2842 byte_count = sizeof(struct static_vport_info)
2843 - offset;
2844 memcpy(vport_buff + offset, mp->virt, byte_count);
2845 offset += byte_count;
2846 } else {
2847 if (mb->un.varDmp.word_cnt >
2848 sizeof(struct static_vport_info) - offset)
2849 mb->un.varDmp.word_cnt =
2850 sizeof(struct static_vport_info)
2851 - offset;
2852 byte_count = mb->un.varDmp.word_cnt;
2853 lpfc_sli_pcimem_bcopy(((uint8_t *)mb) + DMP_RSP_OFFSET,
2854 vport_buff + offset,
2855 byte_count);
2856
2857 offset += byte_count;
2858 }
2859
2860 } while (byte_count &&
2861 offset < sizeof(struct static_vport_info));
2862
2863
2864 if ((le32_to_cpu(vport_info->signature) != VPORT_INFO_SIG) ||
2865 ((le32_to_cpu(vport_info->rev) & VPORT_INFO_REV_MASK)
2866 != VPORT_INFO_REV)) {
2867 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
2868 "0545 lpfc_create_static_vport bad"
2869 " information header 0x%x 0x%x\n",
2870 le32_to_cpu(vport_info->signature),
2871 le32_to_cpu(vport_info->rev) & VPORT_INFO_REV_MASK);
2872
2873 goto out;
2874 }
2875
2876 shost = lpfc_shost_from_vport(phba->pport);
2877
2878 for (i = 0; i < MAX_STATIC_VPORT_COUNT; i++) {
2879 memset(&vport_id, 0, sizeof(vport_id));
2880 vport_id.port_name = wwn_to_u64(vport_info->vport_list[i].wwpn);
2881 vport_id.node_name = wwn_to_u64(vport_info->vport_list[i].wwnn);
2882 if (!vport_id.port_name || !vport_id.node_name)
2883 continue;
2884
2885 vport_id.roles = FC_PORT_ROLE_FCP_INITIATOR;
2886 vport_id.vport_type = FC_PORTTYPE_NPIV;
2887 vport_id.disable = false;
2888 new_fc_vport = fc_vport_create(shost, 0, &vport_id);
2889
2890 if (!new_fc_vport) {
2891 lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
2892 "0546 lpfc_create_static_vport failed to"
2893 " create vport\n");
2894 continue;
2895 }
2896
2897 vport = *(struct lpfc_vport **)new_fc_vport->dd_data;
2898 vport->vport_flag |= STATIC_VPORT;
2899 }
2900
2901 out:
2902 kfree(vport_info);
2903 if (rc != MBX_TIMEOUT) {
2904 if (pmb->context2) {
2905 mp = (struct lpfc_dmabuf *) pmb->context2;
2906 lpfc_mbuf_free(phba, mp->virt, mp->phys);
2907 kfree(mp);
2908 }
2909 mempool_free(pmb, phba->mbox_mem_pool);
2910 }
2911
2912 return;
2913 }
2914
2915 /*
2916 * This routine handles processing a Fabric REG_LOGIN mailbox
2917 * command upon completion. It is setup in the LPFC_MBOXQ
2918 * as the completion routine when the command is
2919 * handed off to the SLI layer.
2920 */
2921 void
2922 lpfc_mbx_cmpl_fabric_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
2923 {
2924 struct lpfc_vport *vport = pmb->vport;
2925 MAILBOX_t *mb = &pmb->u.mb;
2926 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
2927 struct lpfc_nodelist *ndlp;
2928
2929 ndlp = (struct lpfc_nodelist *) pmb->context2;
2930 pmb->context1 = NULL;
2931 pmb->context2 = NULL;
2932 if (mb->mbxStatus) {
2933 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
2934 "0258 Register Fabric login error: 0x%x\n",
2935 mb->mbxStatus);
2936 lpfc_mbuf_free(phba, mp->virt, mp->phys);
2937 kfree(mp);
2938 mempool_free(pmb, phba->mbox_mem_pool);
2939
2940 if (phba->fc_topology == TOPOLOGY_LOOP) {
2941 /* FLOGI failed, use loop map to make discovery list */
2942 lpfc_disc_list_loopmap(vport);
2943
2944 /* Start discovery */
2945 lpfc_disc_start(vport);
2946 /* Decrement the reference count to ndlp after the
2947 * reference to the ndlp are done.
2948 */
2949 lpfc_nlp_put(ndlp);
2950 return;
2951 }
2952
2953 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
2954 /* Decrement the reference count to ndlp after the reference
2955 * to the ndlp are done.
2956 */
2957 lpfc_nlp_put(ndlp);
2958 return;
2959 }
2960
2961 ndlp->nlp_rpi = mb->un.varWords[0];
2962 ndlp->nlp_flag |= NLP_RPI_VALID;
2963 ndlp->nlp_type |= NLP_FABRIC;
2964 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
2965
2966 if (vport->port_state == LPFC_FABRIC_CFG_LINK) {
2967 lpfc_start_fdiscs(phba);
2968 lpfc_do_scr_ns_plogi(phba, vport);
2969 }
2970
2971 lpfc_mbuf_free(phba, mp->virt, mp->phys);
2972 kfree(mp);
2973 mempool_free(pmb, phba->mbox_mem_pool);
2974
2975 /* Drop the reference count from the mbox at the end after
2976 * all the current reference to the ndlp have been done.
2977 */
2978 lpfc_nlp_put(ndlp);
2979 return;
2980 }
2981
2982 /*
2983 * This routine handles processing a NameServer REG_LOGIN mailbox
2984 * command upon completion. It is setup in the LPFC_MBOXQ
2985 * as the completion routine when the command is
2986 * handed off to the SLI layer.
2987 */
2988 void
2989 lpfc_mbx_cmpl_ns_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
2990 {
2991 MAILBOX_t *mb = &pmb->u.mb;
2992 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
2993 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2;
2994 struct lpfc_vport *vport = pmb->vport;
2995
2996 if (mb->mbxStatus) {
2997 out:
2998 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
2999 "0260 Register NameServer error: 0x%x\n",
3000 mb->mbxStatus);
3001 /* decrement the node reference count held for this
3002 * callback function.
3003 */
3004 lpfc_nlp_put(ndlp);
3005 lpfc_mbuf_free(phba, mp->virt, mp->phys);
3006 kfree(mp);
3007 mempool_free(pmb, phba->mbox_mem_pool);
3008
3009 /* If no other thread is using the ndlp, free it */
3010 lpfc_nlp_not_used(ndlp);
3011
3012 if (phba->fc_topology == TOPOLOGY_LOOP) {
3013 /*
3014 * RegLogin failed, use loop map to make discovery
3015 * list
3016 */
3017 lpfc_disc_list_loopmap(vport);
3018
3019 /* Start discovery */
3020 lpfc_disc_start(vport);
3021 return;
3022 }
3023 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
3024 return;
3025 }
3026
3027 pmb->context1 = NULL;
3028
3029 ndlp->nlp_rpi = mb->un.varWords[0];
3030 ndlp->nlp_flag |= NLP_RPI_VALID;
3031 ndlp->nlp_type |= NLP_FABRIC;
3032 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
3033
3034 if (vport->port_state < LPFC_VPORT_READY) {
3035 /* Link up discovery requires Fabric registration. */
3036 lpfc_ns_cmd(vport, SLI_CTNS_RFF_ID, 0, 0); /* Do this first! */
3037 lpfc_ns_cmd(vport, SLI_CTNS_RNN_ID, 0, 0);
3038 lpfc_ns_cmd(vport, SLI_CTNS_RSNN_NN, 0, 0);
3039 lpfc_ns_cmd(vport, SLI_CTNS_RSPN_ID, 0, 0);
3040 lpfc_ns_cmd(vport, SLI_CTNS_RFT_ID, 0, 0);
3041
3042 /* Issue SCR just before NameServer GID_FT Query */
3043 lpfc_issue_els_scr(vport, SCR_DID, 0);
3044 }
3045
3046 vport->fc_ns_retry = 0;
3047 /* Good status, issue CT Request to NameServer */
3048 if (lpfc_ns_cmd(vport, SLI_CTNS_GID_FT, 0, 0)) {
3049 /* Cannot issue NameServer Query, so finish up discovery */
3050 goto out;
3051 }
3052
3053 /* decrement the node reference count held for this
3054 * callback function.
3055 */
3056 lpfc_nlp_put(ndlp);
3057 lpfc_mbuf_free(phba, mp->virt, mp->phys);
3058 kfree(mp);
3059 mempool_free(pmb, phba->mbox_mem_pool);
3060
3061 return;
3062 }
3063
3064 static void
3065 lpfc_register_remote_port(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
3066 {
3067 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3068 struct fc_rport *rport;
3069 struct lpfc_rport_data *rdata;
3070 struct fc_rport_identifiers rport_ids;
3071 struct lpfc_hba *phba = vport->phba;
3072
3073 /* Remote port has reappeared. Re-register w/ FC transport */
3074 rport_ids.node_name = wwn_to_u64(ndlp->nlp_nodename.u.wwn);
3075 rport_ids.port_name = wwn_to_u64(ndlp->nlp_portname.u.wwn);
3076 rport_ids.port_id = ndlp->nlp_DID;
3077 rport_ids.roles = FC_RPORT_ROLE_UNKNOWN;
3078
3079 /*
3080 * We leave our node pointer in rport->dd_data when we unregister a
3081 * FCP target port. But fc_remote_port_add zeros the space to which
3082 * rport->dd_data points. So, if we're reusing a previously
3083 * registered port, drop the reference that we took the last time we
3084 * registered the port.
3085 */
3086 if (ndlp->rport && ndlp->rport->dd_data &&
3087 ((struct lpfc_rport_data *) ndlp->rport->dd_data)->pnode == ndlp)
3088 lpfc_nlp_put(ndlp);
3089
3090 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
3091 "rport add: did:x%x flg:x%x type x%x",
3092 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
3093
3094 ndlp->rport = rport = fc_remote_port_add(shost, 0, &rport_ids);
3095 if (!rport || !get_device(&rport->dev)) {
3096 dev_printk(KERN_WARNING, &phba->pcidev->dev,
3097 "Warning: fc_remote_port_add failed\n");
3098 return;
3099 }
3100
3101 /* initialize static port data */
3102 rport->maxframe_size = ndlp->nlp_maxframe;
3103 rport->supported_classes = ndlp->nlp_class_sup;
3104 rdata = rport->dd_data;
3105 rdata->pnode = lpfc_nlp_get(ndlp);
3106
3107 if (ndlp->nlp_type & NLP_FCP_TARGET)
3108 rport_ids.roles |= FC_RPORT_ROLE_FCP_TARGET;
3109 if (ndlp->nlp_type & NLP_FCP_INITIATOR)
3110 rport_ids.roles |= FC_RPORT_ROLE_FCP_INITIATOR;
3111
3112
3113 if (rport_ids.roles != FC_RPORT_ROLE_UNKNOWN)
3114 fc_remote_port_rolechg(rport, rport_ids.roles);
3115
3116 if ((rport->scsi_target_id != -1) &&
3117 (rport->scsi_target_id < LPFC_MAX_TARGET)) {
3118 ndlp->nlp_sid = rport->scsi_target_id;
3119 }
3120 return;
3121 }
3122
3123 static void
3124 lpfc_unregister_remote_port(struct lpfc_nodelist *ndlp)
3125 {
3126 struct fc_rport *rport = ndlp->rport;
3127
3128 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_RPORT,
3129 "rport delete: did:x%x flg:x%x type x%x",
3130 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
3131
3132 fc_remote_port_delete(rport);
3133
3134 return;
3135 }
3136
3137 static void
3138 lpfc_nlp_counters(struct lpfc_vport *vport, int state, int count)
3139 {
3140 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3141
3142 spin_lock_irq(shost->host_lock);
3143 switch (state) {
3144 case NLP_STE_UNUSED_NODE:
3145 vport->fc_unused_cnt += count;
3146 break;
3147 case NLP_STE_PLOGI_ISSUE:
3148 vport->fc_plogi_cnt += count;
3149 break;
3150 case NLP_STE_ADISC_ISSUE:
3151 vport->fc_adisc_cnt += count;
3152 break;
3153 case NLP_STE_REG_LOGIN_ISSUE:
3154 vport->fc_reglogin_cnt += count;
3155 break;
3156 case NLP_STE_PRLI_ISSUE:
3157 vport->fc_prli_cnt += count;
3158 break;
3159 case NLP_STE_UNMAPPED_NODE:
3160 vport->fc_unmap_cnt += count;
3161 break;
3162 case NLP_STE_MAPPED_NODE:
3163 vport->fc_map_cnt += count;
3164 break;
3165 case NLP_STE_NPR_NODE:
3166 vport->fc_npr_cnt += count;
3167 break;
3168 }
3169 spin_unlock_irq(shost->host_lock);
3170 }
3171
3172 static void
3173 lpfc_nlp_state_cleanup(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
3174 int old_state, int new_state)
3175 {
3176 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3177
3178 if (new_state == NLP_STE_UNMAPPED_NODE) {
3179 ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
3180 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE;
3181 ndlp->nlp_type |= NLP_FC_NODE;
3182 }
3183 if (new_state == NLP_STE_MAPPED_NODE)
3184 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE;
3185 if (new_state == NLP_STE_NPR_NODE)
3186 ndlp->nlp_flag &= ~NLP_RCV_PLOGI;
3187
3188 /* Transport interface */
3189 if (ndlp->rport && (old_state == NLP_STE_MAPPED_NODE ||
3190 old_state == NLP_STE_UNMAPPED_NODE)) {
3191 vport->phba->nport_event_cnt++;
3192 lpfc_unregister_remote_port(ndlp);
3193 }
3194
3195 if (new_state == NLP_STE_MAPPED_NODE ||
3196 new_state == NLP_STE_UNMAPPED_NODE) {
3197 vport->phba->nport_event_cnt++;
3198 /*
3199 * Tell the fc transport about the port, if we haven't
3200 * already. If we have, and it's a scsi entity, be
3201 * sure to unblock any attached scsi devices
3202 */
3203 lpfc_register_remote_port(vport, ndlp);
3204 }
3205 if ((new_state == NLP_STE_MAPPED_NODE) &&
3206 (vport->stat_data_enabled)) {
3207 /*
3208 * A new target is discovered, if there is no buffer for
3209 * statistical data collection allocate buffer.
3210 */
3211 ndlp->lat_data = kcalloc(LPFC_MAX_BUCKET_COUNT,
3212 sizeof(struct lpfc_scsicmd_bkt),
3213 GFP_KERNEL);
3214
3215 if (!ndlp->lat_data)
3216 lpfc_printf_vlog(vport, KERN_ERR, LOG_NODE,
3217 "0286 lpfc_nlp_state_cleanup failed to "
3218 "allocate statistical data buffer DID "
3219 "0x%x\n", ndlp->nlp_DID);
3220 }
3221 /*
3222 * if we added to Mapped list, but the remote port
3223 * registration failed or assigned a target id outside
3224 * our presentable range - move the node to the
3225 * Unmapped List
3226 */
3227 if (new_state == NLP_STE_MAPPED_NODE &&
3228 (!ndlp->rport ||
3229 ndlp->rport->scsi_target_id == -1 ||
3230 ndlp->rport->scsi_target_id >= LPFC_MAX_TARGET)) {
3231 spin_lock_irq(shost->host_lock);
3232 ndlp->nlp_flag |= NLP_TGT_NO_SCSIID;
3233 spin_unlock_irq(shost->host_lock);
3234 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
3235 }
3236 }
3237
3238 static char *
3239 lpfc_nlp_state_name(char *buffer, size_t size, int state)
3240 {
3241 static char *states[] = {
3242 [NLP_STE_UNUSED_NODE] = "UNUSED",
3243 [NLP_STE_PLOGI_ISSUE] = "PLOGI",
3244 [NLP_STE_ADISC_ISSUE] = "ADISC",
3245 [NLP_STE_REG_LOGIN_ISSUE] = "REGLOGIN",
3246 [NLP_STE_PRLI_ISSUE] = "PRLI",
3247 [NLP_STE_UNMAPPED_NODE] = "UNMAPPED",
3248 [NLP_STE_MAPPED_NODE] = "MAPPED",
3249 [NLP_STE_NPR_NODE] = "NPR",
3250 };
3251
3252 if (state < NLP_STE_MAX_STATE && states[state])
3253 strlcpy(buffer, states[state], size);
3254 else
3255 snprintf(buffer, size, "unknown (%d)", state);
3256 return buffer;
3257 }
3258
3259 void
3260 lpfc_nlp_set_state(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
3261 int state)
3262 {
3263 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3264 int old_state = ndlp->nlp_state;
3265 char name1[16], name2[16];
3266
3267 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
3268 "0904 NPort state transition x%06x, %s -> %s\n",
3269 ndlp->nlp_DID,
3270 lpfc_nlp_state_name(name1, sizeof(name1), old_state),
3271 lpfc_nlp_state_name(name2, sizeof(name2), state));
3272
3273 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
3274 "node statechg did:x%x old:%d ste:%d",
3275 ndlp->nlp_DID, old_state, state);
3276
3277 if (old_state == NLP_STE_NPR_NODE &&
3278 state != NLP_STE_NPR_NODE)
3279 lpfc_cancel_retry_delay_tmo(vport, ndlp);
3280 if (old_state == NLP_STE_UNMAPPED_NODE) {
3281 ndlp->nlp_flag &= ~NLP_TGT_NO_SCSIID;
3282 ndlp->nlp_type &= ~NLP_FC_NODE;
3283 }
3284
3285 if (list_empty(&ndlp->nlp_listp)) {
3286 spin_lock_irq(shost->host_lock);
3287 list_add_tail(&ndlp->nlp_listp, &vport->fc_nodes);
3288 spin_unlock_irq(shost->host_lock);
3289 } else if (old_state)
3290 lpfc_nlp_counters(vport, old_state, -1);
3291
3292 ndlp->nlp_state = state;
3293 lpfc_nlp_counters(vport, state, 1);
3294 lpfc_nlp_state_cleanup(vport, ndlp, old_state, state);
3295 }
3296
3297 void
3298 lpfc_enqueue_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
3299 {
3300 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3301
3302 if (list_empty(&ndlp->nlp_listp)) {
3303 spin_lock_irq(shost->host_lock);
3304 list_add_tail(&ndlp->nlp_listp, &vport->fc_nodes);
3305 spin_unlock_irq(shost->host_lock);
3306 }
3307 }
3308
3309 void
3310 lpfc_dequeue_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
3311 {
3312 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3313
3314 lpfc_cancel_retry_delay_tmo(vport, ndlp);
3315 if (ndlp->nlp_state && !list_empty(&ndlp->nlp_listp))
3316 lpfc_nlp_counters(vport, ndlp->nlp_state, -1);
3317 spin_lock_irq(shost->host_lock);
3318 list_del_init(&ndlp->nlp_listp);
3319 spin_unlock_irq(shost->host_lock);
3320 lpfc_nlp_state_cleanup(vport, ndlp, ndlp->nlp_state,
3321 NLP_STE_UNUSED_NODE);
3322 }
3323
3324 static void
3325 lpfc_disable_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
3326 {
3327 lpfc_cancel_retry_delay_tmo(vport, ndlp);
3328 if (ndlp->nlp_state && !list_empty(&ndlp->nlp_listp))
3329 lpfc_nlp_counters(vport, ndlp->nlp_state, -1);
3330 lpfc_nlp_state_cleanup(vport, ndlp, ndlp->nlp_state,
3331 NLP_STE_UNUSED_NODE);
3332 }
3333 /**
3334 * lpfc_initialize_node - Initialize all fields of node object
3335 * @vport: Pointer to Virtual Port object.
3336 * @ndlp: Pointer to FC node object.
3337 * @did: FC_ID of the node.
3338 *
3339 * This function is always called when node object need to be initialized.
3340 * It initializes all the fields of the node object. Although the reference
3341 * to phba from @ndlp can be obtained indirectly through it's reference to
3342 * @vport, a direct reference to phba is taken here by @ndlp. This is due
3343 * to the life-span of the @ndlp might go beyond the existence of @vport as
3344 * the final release of ndlp is determined by its reference count. And, the
3345 * operation on @ndlp needs the reference to phba.
3346 **/
3347 static inline void
3348 lpfc_initialize_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
3349 uint32_t did)
3350 {
3351 INIT_LIST_HEAD(&ndlp->els_retry_evt.evt_listp);
3352 INIT_LIST_HEAD(&ndlp->dev_loss_evt.evt_listp);
3353 init_timer(&ndlp->nlp_delayfunc);
3354 ndlp->nlp_delayfunc.function = lpfc_els_retry_delay;
3355 ndlp->nlp_delayfunc.data = (unsigned long)ndlp;
3356 ndlp->nlp_DID = did;
3357 ndlp->vport = vport;
3358 ndlp->phba = vport->phba;
3359 ndlp->nlp_sid = NLP_NO_SID;
3360 kref_init(&ndlp->kref);
3361 NLP_INT_NODE_ACT(ndlp);
3362 atomic_set(&ndlp->cmd_pending, 0);
3363 ndlp->cmd_qdepth = LPFC_MAX_TGT_QDEPTH;
3364 }
3365
3366 struct lpfc_nodelist *
3367 lpfc_enable_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
3368 int state)
3369 {
3370 struct lpfc_hba *phba = vport->phba;
3371 uint32_t did;
3372 unsigned long flags;
3373
3374 if (!ndlp)
3375 return NULL;
3376
3377 spin_lock_irqsave(&phba->ndlp_lock, flags);
3378 /* The ndlp should not be in memory free mode */
3379 if (NLP_CHK_FREE_REQ(ndlp)) {
3380 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
3381 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE,
3382 "0277 lpfc_enable_node: ndlp:x%p "
3383 "usgmap:x%x refcnt:%d\n",
3384 (void *)ndlp, ndlp->nlp_usg_map,
3385 atomic_read(&ndlp->kref.refcount));
3386 return NULL;
3387 }
3388 /* The ndlp should not already be in active mode */
3389 if (NLP_CHK_NODE_ACT(ndlp)) {
3390 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
3391 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE,
3392 "0278 lpfc_enable_node: ndlp:x%p "
3393 "usgmap:x%x refcnt:%d\n",
3394 (void *)ndlp, ndlp->nlp_usg_map,
3395 atomic_read(&ndlp->kref.refcount));
3396 return NULL;
3397 }
3398
3399 /* Keep the original DID */
3400 did = ndlp->nlp_DID;
3401
3402 /* re-initialize ndlp except of ndlp linked list pointer */
3403 memset((((char *)ndlp) + sizeof (struct list_head)), 0,
3404 sizeof (struct lpfc_nodelist) - sizeof (struct list_head));
3405 lpfc_initialize_node(vport, ndlp, did);
3406
3407 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
3408
3409 if (state != NLP_STE_UNUSED_NODE)
3410 lpfc_nlp_set_state(vport, ndlp, state);
3411
3412 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
3413 "node enable: did:x%x",
3414 ndlp->nlp_DID, 0, 0);
3415 return ndlp;
3416 }
3417
3418 void
3419 lpfc_drop_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
3420 {
3421 /*
3422 * Use of lpfc_drop_node and UNUSED list: lpfc_drop_node should
3423 * be used if we wish to issue the "last" lpfc_nlp_put() to remove
3424 * the ndlp from the vport. The ndlp marked as UNUSED on the list
3425 * until ALL other outstanding threads have completed. We check
3426 * that the ndlp not already in the UNUSED state before we proceed.
3427 */
3428 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
3429 return;
3430 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNUSED_NODE);
3431 lpfc_nlp_put(ndlp);
3432 return;
3433 }
3434
3435 /*
3436 * Start / ReStart rescue timer for Discovery / RSCN handling
3437 */
3438 void
3439 lpfc_set_disctmo(struct lpfc_vport *vport)
3440 {
3441 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3442 struct lpfc_hba *phba = vport->phba;
3443 uint32_t tmo;
3444
3445 if (vport->port_state == LPFC_LOCAL_CFG_LINK) {
3446 /* For FAN, timeout should be greater than edtov */
3447 tmo = (((phba->fc_edtov + 999) / 1000) + 1);
3448 } else {
3449 /* Normal discovery timeout should be > than ELS/CT timeout
3450 * FC spec states we need 3 * ratov for CT requests
3451 */
3452 tmo = ((phba->fc_ratov * 3) + 3);
3453 }
3454
3455
3456 if (!timer_pending(&vport->fc_disctmo)) {
3457 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
3458 "set disc timer: tmo:x%x state:x%x flg:x%x",
3459 tmo, vport->port_state, vport->fc_flag);
3460 }
3461
3462 mod_timer(&vport->fc_disctmo, jiffies + HZ * tmo);
3463 spin_lock_irq(shost->host_lock);
3464 vport->fc_flag |= FC_DISC_TMO;
3465 spin_unlock_irq(shost->host_lock);
3466
3467 /* Start Discovery Timer state <hba_state> */
3468 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
3469 "0247 Start Discovery Timer state x%x "
3470 "Data: x%x x%lx x%x x%x\n",
3471 vport->port_state, tmo,
3472 (unsigned long)&vport->fc_disctmo, vport->fc_plogi_cnt,
3473 vport->fc_adisc_cnt);
3474
3475 return;
3476 }
3477
3478 /*
3479 * Cancel rescue timer for Discovery / RSCN handling
3480 */
3481 int
3482 lpfc_can_disctmo(struct lpfc_vport *vport)
3483 {
3484 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3485 unsigned long iflags;
3486
3487 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
3488 "can disc timer: state:x%x rtry:x%x flg:x%x",
3489 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
3490
3491 /* Turn off discovery timer if its running */
3492 if (vport->fc_flag & FC_DISC_TMO) {
3493 spin_lock_irqsave(shost->host_lock, iflags);
3494 vport->fc_flag &= ~FC_DISC_TMO;
3495 spin_unlock_irqrestore(shost->host_lock, iflags);
3496 del_timer_sync(&vport->fc_disctmo);
3497 spin_lock_irqsave(&vport->work_port_lock, iflags);
3498 vport->work_port_events &= ~WORKER_DISC_TMO;
3499 spin_unlock_irqrestore(&vport->work_port_lock, iflags);
3500 }
3501
3502 /* Cancel Discovery Timer state <hba_state> */
3503 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
3504 "0248 Cancel Discovery Timer state x%x "
3505 "Data: x%x x%x x%x\n",
3506 vport->port_state, vport->fc_flag,
3507 vport->fc_plogi_cnt, vport->fc_adisc_cnt);
3508 return 0;
3509 }
3510
3511 /*
3512 * Check specified ring for outstanding IOCB on the SLI queue
3513 * Return true if iocb matches the specified nport
3514 */
3515 int
3516 lpfc_check_sli_ndlp(struct lpfc_hba *phba,
3517 struct lpfc_sli_ring *pring,
3518 struct lpfc_iocbq *iocb,
3519 struct lpfc_nodelist *ndlp)
3520 {
3521 struct lpfc_sli *psli = &phba->sli;
3522 IOCB_t *icmd = &iocb->iocb;
3523 struct lpfc_vport *vport = ndlp->vport;
3524
3525 if (iocb->vport != vport)
3526 return 0;
3527
3528 if (pring->ringno == LPFC_ELS_RING) {
3529 switch (icmd->ulpCommand) {
3530 case CMD_GEN_REQUEST64_CR:
3531 if (iocb->context_un.ndlp == ndlp)
3532 return 1;
3533 case CMD_ELS_REQUEST64_CR:
3534 if (icmd->un.elsreq64.remoteID == ndlp->nlp_DID)
3535 return 1;
3536 case CMD_XMIT_ELS_RSP64_CX:
3537 if (iocb->context1 == (uint8_t *) ndlp)
3538 return 1;
3539 }
3540 } else if (pring->ringno == psli->extra_ring) {
3541
3542 } else if (pring->ringno == psli->fcp_ring) {
3543 /* Skip match check if waiting to relogin to FCP target */
3544 if ((ndlp->nlp_type & NLP_FCP_TARGET) &&
3545 (ndlp->nlp_flag & NLP_DELAY_TMO)) {
3546 return 0;
3547 }
3548 if (icmd->ulpContext == (volatile ushort)ndlp->nlp_rpi) {
3549 return 1;
3550 }
3551 } else if (pring->ringno == psli->next_ring) {
3552
3553 }
3554 return 0;
3555 }
3556
3557 /*
3558 * Free resources / clean up outstanding I/Os
3559 * associated with nlp_rpi in the LPFC_NODELIST entry.
3560 */
3561 static int
3562 lpfc_no_rpi(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
3563 {
3564 LIST_HEAD(completions);
3565 struct lpfc_sli *psli;
3566 struct lpfc_sli_ring *pring;
3567 struct lpfc_iocbq *iocb, *next_iocb;
3568 uint32_t i;
3569
3570 lpfc_fabric_abort_nport(ndlp);
3571
3572 /*
3573 * Everything that matches on txcmplq will be returned
3574 * by firmware with a no rpi error.
3575 */
3576 psli = &phba->sli;
3577 if (ndlp->nlp_flag & NLP_RPI_VALID) {
3578 /* Now process each ring */
3579 for (i = 0; i < psli->num_rings; i++) {
3580 pring = &psli->ring[i];
3581
3582 spin_lock_irq(&phba->hbalock);
3583 list_for_each_entry_safe(iocb, next_iocb, &pring->txq,
3584 list) {
3585 /*
3586 * Check to see if iocb matches the nport we are
3587 * looking for
3588 */
3589 if ((lpfc_check_sli_ndlp(phba, pring, iocb,
3590 ndlp))) {
3591 /* It matches, so deque and call compl
3592 with an error */
3593 list_move_tail(&iocb->list,
3594 &completions);
3595 pring->txq_cnt--;
3596 }
3597 }
3598 spin_unlock_irq(&phba->hbalock);
3599 }
3600 }
3601
3602 /* Cancel all the IOCBs from the completions list */
3603 lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
3604 IOERR_SLI_ABORTED);
3605
3606 return 0;
3607 }
3608
3609 /*
3610 * Free rpi associated with LPFC_NODELIST entry.
3611 * This routine is called from lpfc_freenode(), when we are removing
3612 * a LPFC_NODELIST entry. It is also called if the driver initiates a
3613 * LOGO that completes successfully, and we are waiting to PLOGI back
3614 * to the remote NPort. In addition, it is called after we receive
3615 * and unsolicated ELS cmd, send back a rsp, the rsp completes and
3616 * we are waiting to PLOGI back to the remote NPort.
3617 */
3618 int
3619 lpfc_unreg_rpi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
3620 {
3621 struct lpfc_hba *phba = vport->phba;
3622 LPFC_MBOXQ_t *mbox;
3623 int rc;
3624
3625 if (ndlp->nlp_flag & NLP_RPI_VALID) {
3626 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
3627 if (mbox) {
3628 lpfc_unreg_login(phba, vport->vpi, ndlp->nlp_rpi, mbox);
3629 mbox->vport = vport;
3630 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
3631 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
3632 if (rc == MBX_NOT_FINISHED)
3633 mempool_free(mbox, phba->mbox_mem_pool);
3634 }
3635 lpfc_no_rpi(phba, ndlp);
3636 ndlp->nlp_rpi = 0;
3637 ndlp->nlp_flag &= ~NLP_RPI_VALID;
3638 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
3639 return 1;
3640 }
3641 return 0;
3642 }
3643
3644 /**
3645 * lpfc_unreg_hba_rpis - Unregister rpis registered to the hba.
3646 * @phba: pointer to lpfc hba data structure.
3647 *
3648 * This routine is invoked to unregister all the currently registered RPIs
3649 * to the HBA.
3650 **/
3651 void
3652 lpfc_unreg_hba_rpis(struct lpfc_hba *phba)
3653 {
3654 struct lpfc_vport **vports;
3655 struct lpfc_nodelist *ndlp;
3656 struct Scsi_Host *shost;
3657 int i;
3658
3659 vports = lpfc_create_vport_work_array(phba);
3660 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
3661 shost = lpfc_shost_from_vport(vports[i]);
3662 spin_lock_irq(shost->host_lock);
3663 list_for_each_entry(ndlp, &vports[i]->fc_nodes, nlp_listp) {
3664 if (ndlp->nlp_flag & NLP_RPI_VALID) {
3665 /* The mempool_alloc might sleep */
3666 spin_unlock_irq(shost->host_lock);
3667 lpfc_unreg_rpi(vports[i], ndlp);
3668 spin_lock_irq(shost->host_lock);
3669 }
3670 }
3671 spin_unlock_irq(shost->host_lock);
3672 }
3673 lpfc_destroy_vport_work_array(phba, vports);
3674 }
3675
3676 void
3677 lpfc_unreg_all_rpis(struct lpfc_vport *vport)
3678 {
3679 struct lpfc_hba *phba = vport->phba;
3680 LPFC_MBOXQ_t *mbox;
3681 int rc;
3682
3683 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
3684 if (mbox) {
3685 lpfc_unreg_login(phba, vport->vpi, 0xffff, mbox);
3686 mbox->vport = vport;
3687 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
3688 mbox->context1 = NULL;
3689 rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO);
3690 if (rc != MBX_TIMEOUT)
3691 mempool_free(mbox, phba->mbox_mem_pool);
3692
3693 if ((rc == MBX_TIMEOUT) || (rc == MBX_NOT_FINISHED))
3694 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX | LOG_VPORT,
3695 "1836 Could not issue "
3696 "unreg_login(all_rpis) status %d\n", rc);
3697 }
3698 }
3699
3700 void
3701 lpfc_unreg_default_rpis(struct lpfc_vport *vport)
3702 {
3703 struct lpfc_hba *phba = vport->phba;
3704 LPFC_MBOXQ_t *mbox;
3705 int rc;
3706
3707 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
3708 if (mbox) {
3709 lpfc_unreg_did(phba, vport->vpi, 0xffffffff, mbox);
3710 mbox->vport = vport;
3711 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
3712 mbox->context1 = NULL;
3713 rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO);
3714 if (rc != MBX_TIMEOUT)
3715 mempool_free(mbox, phba->mbox_mem_pool);
3716
3717 if ((rc == MBX_TIMEOUT) || (rc == MBX_NOT_FINISHED))
3718 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX | LOG_VPORT,
3719 "1815 Could not issue "
3720 "unreg_did (default rpis) status %d\n",
3721 rc);
3722 }
3723 }
3724
3725 /*
3726 * Free resources associated with LPFC_NODELIST entry
3727 * so it can be freed.
3728 */
3729 static int
3730 lpfc_cleanup_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
3731 {
3732 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3733 struct lpfc_hba *phba = vport->phba;
3734 LPFC_MBOXQ_t *mb, *nextmb;
3735 struct lpfc_dmabuf *mp;
3736
3737 /* Cleanup node for NPort <nlp_DID> */
3738 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
3739 "0900 Cleanup node for NPort x%x "
3740 "Data: x%x x%x x%x\n",
3741 ndlp->nlp_DID, ndlp->nlp_flag,
3742 ndlp->nlp_state, ndlp->nlp_rpi);
3743 if (NLP_CHK_FREE_REQ(ndlp)) {
3744 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE,
3745 "0280 lpfc_cleanup_node: ndlp:x%p "
3746 "usgmap:x%x refcnt:%d\n",
3747 (void *)ndlp, ndlp->nlp_usg_map,
3748 atomic_read(&ndlp->kref.refcount));
3749 lpfc_dequeue_node(vport, ndlp);
3750 } else {
3751 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE,
3752 "0281 lpfc_cleanup_node: ndlp:x%p "
3753 "usgmap:x%x refcnt:%d\n",
3754 (void *)ndlp, ndlp->nlp_usg_map,
3755 atomic_read(&ndlp->kref.refcount));
3756 lpfc_disable_node(vport, ndlp);
3757 }
3758
3759 /* cleanup any ndlp on mbox q waiting for reglogin cmpl */
3760 if ((mb = phba->sli.mbox_active)) {
3761 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
3762 (ndlp == (struct lpfc_nodelist *) mb->context2)) {
3763 mb->context2 = NULL;
3764 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
3765 }
3766 }
3767
3768 spin_lock_irq(&phba->hbalock);
3769 list_for_each_entry_safe(mb, nextmb, &phba->sli.mboxq, list) {
3770 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
3771 (ndlp == (struct lpfc_nodelist *) mb->context2)) {
3772 mp = (struct lpfc_dmabuf *) (mb->context1);
3773 if (mp) {
3774 __lpfc_mbuf_free(phba, mp->virt, mp->phys);
3775 kfree(mp);
3776 }
3777 list_del(&mb->list);
3778 mempool_free(mb, phba->mbox_mem_pool);
3779 /* We shall not invoke the lpfc_nlp_put to decrement
3780 * the ndlp reference count as we are in the process
3781 * of lpfc_nlp_release.
3782 */
3783 }
3784 }
3785 spin_unlock_irq(&phba->hbalock);
3786
3787 lpfc_els_abort(phba, ndlp);
3788
3789 spin_lock_irq(shost->host_lock);
3790 ndlp->nlp_flag &= ~NLP_DELAY_TMO;
3791 spin_unlock_irq(shost->host_lock);
3792
3793 ndlp->nlp_last_elscmd = 0;
3794 del_timer_sync(&ndlp->nlp_delayfunc);
3795
3796 list_del_init(&ndlp->els_retry_evt.evt_listp);
3797 list_del_init(&ndlp->dev_loss_evt.evt_listp);
3798
3799 lpfc_unreg_rpi(vport, ndlp);
3800
3801 return 0;
3802 }
3803
3804 /*
3805 * Check to see if we can free the nlp back to the freelist.
3806 * If we are in the middle of using the nlp in the discovery state
3807 * machine, defer the free till we reach the end of the state machine.
3808 */
3809 static void
3810 lpfc_nlp_remove(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
3811 {
3812 struct lpfc_hba *phba = vport->phba;
3813 struct lpfc_rport_data *rdata;
3814 LPFC_MBOXQ_t *mbox;
3815 int rc;
3816
3817 lpfc_cancel_retry_delay_tmo(vport, ndlp);
3818 if ((ndlp->nlp_flag & NLP_DEFER_RM) &&
3819 !(ndlp->nlp_flag & NLP_RPI_VALID)) {
3820 /* For this case we need to cleanup the default rpi
3821 * allocated by the firmware.
3822 */
3823 if ((mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL))
3824 != NULL) {
3825 rc = lpfc_reg_rpi(phba, vport->vpi, ndlp->nlp_DID,
3826 (uint8_t *) &vport->fc_sparam, mbox, 0);
3827 if (rc) {
3828 mempool_free(mbox, phba->mbox_mem_pool);
3829 }
3830 else {
3831 mbox->mbox_flag |= LPFC_MBX_IMED_UNREG;
3832 mbox->mbox_cmpl = lpfc_mbx_cmpl_dflt_rpi;
3833 mbox->vport = vport;
3834 mbox->context2 = NULL;
3835 rc =lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
3836 if (rc == MBX_NOT_FINISHED) {
3837 mempool_free(mbox, phba->mbox_mem_pool);
3838 }
3839 }
3840 }
3841 }
3842 lpfc_cleanup_node(vport, ndlp);
3843
3844 /*
3845 * We can get here with a non-NULL ndlp->rport because when we
3846 * unregister a rport we don't break the rport/node linkage. So if we
3847 * do, make sure we don't leaving any dangling pointers behind.
3848 */
3849 if (ndlp->rport) {
3850 rdata = ndlp->rport->dd_data;
3851 rdata->pnode = NULL;
3852 ndlp->rport = NULL;
3853 }
3854 }
3855
3856 static int
3857 lpfc_matchdid(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
3858 uint32_t did)
3859 {
3860 D_ID mydid, ndlpdid, matchdid;
3861
3862 if (did == Bcast_DID)
3863 return 0;
3864
3865 /* First check for Direct match */
3866 if (ndlp->nlp_DID == did)
3867 return 1;
3868
3869 /* Next check for area/domain identically equals 0 match */
3870 mydid.un.word = vport->fc_myDID;
3871 if ((mydid.un.b.domain == 0) && (mydid.un.b.area == 0)) {
3872 return 0;
3873 }
3874
3875 matchdid.un.word = did;
3876 ndlpdid.un.word = ndlp->nlp_DID;
3877 if (matchdid.un.b.id == ndlpdid.un.b.id) {
3878 if ((mydid.un.b.domain == matchdid.un.b.domain) &&
3879 (mydid.un.b.area == matchdid.un.b.area)) {
3880 if ((ndlpdid.un.b.domain == 0) &&
3881 (ndlpdid.un.b.area == 0)) {
3882 if (ndlpdid.un.b.id)
3883 return 1;
3884 }
3885 return 0;
3886 }
3887
3888 matchdid.un.word = ndlp->nlp_DID;
3889 if ((mydid.un.b.domain == ndlpdid.un.b.domain) &&
3890 (mydid.un.b.area == ndlpdid.un.b.area)) {
3891 if ((matchdid.un.b.domain == 0) &&
3892 (matchdid.un.b.area == 0)) {
3893 if (matchdid.un.b.id)
3894 return 1;
3895 }
3896 }
3897 }
3898 return 0;
3899 }
3900
3901 /* Search for a nodelist entry */
3902 static struct lpfc_nodelist *
3903 __lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did)
3904 {
3905 struct lpfc_nodelist *ndlp;
3906 uint32_t data1;
3907
3908 list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
3909 if (lpfc_matchdid(vport, ndlp, did)) {
3910 data1 = (((uint32_t) ndlp->nlp_state << 24) |
3911 ((uint32_t) ndlp->nlp_xri << 16) |
3912 ((uint32_t) ndlp->nlp_type << 8) |
3913 ((uint32_t) ndlp->nlp_rpi & 0xff));
3914 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
3915 "0929 FIND node DID "
3916 "Data: x%p x%x x%x x%x\n",
3917 ndlp, ndlp->nlp_DID,
3918 ndlp->nlp_flag, data1);
3919 return ndlp;
3920 }
3921 }
3922
3923 /* FIND node did <did> NOT FOUND */
3924 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
3925 "0932 FIND node did x%x NOT FOUND.\n", did);
3926 return NULL;
3927 }
3928
3929 struct lpfc_nodelist *
3930 lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did)
3931 {
3932 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3933 struct lpfc_nodelist *ndlp;
3934
3935 spin_lock_irq(shost->host_lock);
3936 ndlp = __lpfc_findnode_did(vport, did);
3937 spin_unlock_irq(shost->host_lock);
3938 return ndlp;
3939 }
3940
3941 struct lpfc_nodelist *
3942 lpfc_setup_disc_node(struct lpfc_vport *vport, uint32_t did)
3943 {
3944 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3945 struct lpfc_nodelist *ndlp;
3946
3947 ndlp = lpfc_findnode_did(vport, did);
3948 if (!ndlp) {
3949 if ((vport->fc_flag & FC_RSCN_MODE) != 0 &&
3950 lpfc_rscn_payload_check(vport, did) == 0)
3951 return NULL;
3952 ndlp = (struct lpfc_nodelist *)
3953 mempool_alloc(vport->phba->nlp_mem_pool, GFP_KERNEL);
3954 if (!ndlp)
3955 return NULL;
3956 lpfc_nlp_init(vport, ndlp, did);
3957 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
3958 spin_lock_irq(shost->host_lock);
3959 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
3960 spin_unlock_irq(shost->host_lock);
3961 return ndlp;
3962 } else if (!NLP_CHK_NODE_ACT(ndlp)) {
3963 ndlp = lpfc_enable_node(vport, ndlp, NLP_STE_NPR_NODE);
3964 if (!ndlp)
3965 return NULL;
3966 spin_lock_irq(shost->host_lock);
3967 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
3968 spin_unlock_irq(shost->host_lock);
3969 return ndlp;
3970 }
3971
3972 if ((vport->fc_flag & FC_RSCN_MODE) &&
3973 !(vport->fc_flag & FC_NDISC_ACTIVE)) {
3974 if (lpfc_rscn_payload_check(vport, did)) {
3975 /* If we've already recieved a PLOGI from this NPort
3976 * we don't need to try to discover it again.
3977 */
3978 if (ndlp->nlp_flag & NLP_RCV_PLOGI)
3979 return NULL;
3980
3981 /* Since this node is marked for discovery,
3982 * delay timeout is not needed.
3983 */
3984 lpfc_cancel_retry_delay_tmo(vport, ndlp);
3985 spin_lock_irq(shost->host_lock);
3986 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
3987 spin_unlock_irq(shost->host_lock);
3988 } else
3989 ndlp = NULL;
3990 } else {
3991 /* If we've already recieved a PLOGI from this NPort,
3992 * or we are already in the process of discovery on it,
3993 * we don't need to try to discover it again.
3994 */
3995 if (ndlp->nlp_state == NLP_STE_ADISC_ISSUE ||
3996 ndlp->nlp_state == NLP_STE_PLOGI_ISSUE ||
3997 ndlp->nlp_flag & NLP_RCV_PLOGI)
3998 return NULL;
3999 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
4000 spin_lock_irq(shost->host_lock);
4001 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
4002 spin_unlock_irq(shost->host_lock);
4003 }
4004 return ndlp;
4005 }
4006
4007 /* Build a list of nodes to discover based on the loopmap */
4008 void
4009 lpfc_disc_list_loopmap(struct lpfc_vport *vport)
4010 {
4011 struct lpfc_hba *phba = vport->phba;
4012 int j;
4013 uint32_t alpa, index;
4014
4015 if (!lpfc_is_link_up(phba))
4016 return;
4017
4018 if (phba->fc_topology != TOPOLOGY_LOOP)
4019 return;
4020
4021 /* Check for loop map present or not */
4022 if (phba->alpa_map[0]) {
4023 for (j = 1; j <= phba->alpa_map[0]; j++) {
4024 alpa = phba->alpa_map[j];
4025 if (((vport->fc_myDID & 0xff) == alpa) || (alpa == 0))
4026 continue;
4027 lpfc_setup_disc_node(vport, alpa);
4028 }
4029 } else {
4030 /* No alpamap, so try all alpa's */
4031 for (j = 0; j < FC_MAXLOOP; j++) {
4032 /* If cfg_scan_down is set, start from highest
4033 * ALPA (0xef) to lowest (0x1).
4034 */
4035 if (vport->cfg_scan_down)
4036 index = j;
4037 else
4038 index = FC_MAXLOOP - j - 1;
4039 alpa = lpfcAlpaArray[index];
4040 if ((vport->fc_myDID & 0xff) == alpa)
4041 continue;
4042 lpfc_setup_disc_node(vport, alpa);
4043 }
4044 }
4045 return;
4046 }
4047
4048 void
4049 lpfc_issue_clear_la(struct lpfc_hba *phba, struct lpfc_vport *vport)
4050 {
4051 LPFC_MBOXQ_t *mbox;
4052 struct lpfc_sli *psli = &phba->sli;
4053 struct lpfc_sli_ring *extra_ring = &psli->ring[psli->extra_ring];
4054 struct lpfc_sli_ring *fcp_ring = &psli->ring[psli->fcp_ring];
4055 struct lpfc_sli_ring *next_ring = &psli->ring[psli->next_ring];
4056 int rc;
4057
4058 /*
4059 * if it's not a physical port or if we already send
4060 * clear_la then don't send it.
4061 */
4062 if ((phba->link_state >= LPFC_CLEAR_LA) ||
4063 (vport->port_type != LPFC_PHYSICAL_PORT) ||
4064 (phba->sli_rev == LPFC_SLI_REV4))
4065 return;
4066
4067 /* Link up discovery */
4068 if ((mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL)) != NULL) {
4069 phba->link_state = LPFC_CLEAR_LA;
4070 lpfc_clear_la(phba, mbox);
4071 mbox->mbox_cmpl = lpfc_mbx_cmpl_clear_la;
4072 mbox->vport = vport;
4073 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
4074 if (rc == MBX_NOT_FINISHED) {
4075 mempool_free(mbox, phba->mbox_mem_pool);
4076 lpfc_disc_flush_list(vport);
4077 extra_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
4078 fcp_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
4079 next_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
4080 phba->link_state = LPFC_HBA_ERROR;
4081 }
4082 }
4083 }
4084
4085 /* Reg_vpi to tell firmware to resume normal operations */
4086 void
4087 lpfc_issue_reg_vpi(struct lpfc_hba *phba, struct lpfc_vport *vport)
4088 {
4089 LPFC_MBOXQ_t *regvpimbox;
4090
4091 regvpimbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
4092 if (regvpimbox) {
4093 lpfc_reg_vpi(vport, regvpimbox);
4094 regvpimbox->mbox_cmpl = lpfc_mbx_cmpl_reg_vpi;
4095 regvpimbox->vport = vport;
4096 if (lpfc_sli_issue_mbox(phba, regvpimbox, MBX_NOWAIT)
4097 == MBX_NOT_FINISHED) {
4098 mempool_free(regvpimbox, phba->mbox_mem_pool);
4099 }
4100 }
4101 }
4102
4103 /* Start Link up / RSCN discovery on NPR nodes */
4104 void
4105 lpfc_disc_start(struct lpfc_vport *vport)
4106 {
4107 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4108 struct lpfc_hba *phba = vport->phba;
4109 uint32_t num_sent;
4110 uint32_t clear_la_pending;
4111 int did_changed;
4112
4113 if (!lpfc_is_link_up(phba))
4114 return;
4115
4116 if (phba->link_state == LPFC_CLEAR_LA)
4117 clear_la_pending = 1;
4118 else
4119 clear_la_pending = 0;
4120
4121 if (vport->port_state < LPFC_VPORT_READY)
4122 vport->port_state = LPFC_DISC_AUTH;
4123
4124 lpfc_set_disctmo(vport);
4125
4126 if (vport->fc_prevDID == vport->fc_myDID)
4127 did_changed = 0;
4128 else
4129 did_changed = 1;
4130
4131 vport->fc_prevDID = vport->fc_myDID;
4132 vport->num_disc_nodes = 0;
4133
4134 /* Start Discovery state <hba_state> */
4135 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
4136 "0202 Start Discovery hba state x%x "
4137 "Data: x%x x%x x%x\n",
4138 vport->port_state, vport->fc_flag, vport->fc_plogi_cnt,
4139 vport->fc_adisc_cnt);
4140
4141 /* First do ADISCs - if any */
4142 num_sent = lpfc_els_disc_adisc(vport);
4143
4144 if (num_sent)
4145 return;
4146
4147 /*
4148 * For SLI3, cmpl_reg_vpi will set port_state to READY, and
4149 * continue discovery.
4150 */
4151 if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
4152 !(vport->fc_flag & FC_PT2PT) &&
4153 !(vport->fc_flag & FC_RSCN_MODE) &&
4154 (phba->sli_rev < LPFC_SLI_REV4)) {
4155 lpfc_issue_reg_vpi(phba, vport);
4156 return;
4157 }
4158
4159 /*
4160 * For SLI2, we need to set port_state to READY and continue
4161 * discovery.
4162 */
4163 if (vport->port_state < LPFC_VPORT_READY && !clear_la_pending) {
4164 /* If we get here, there is nothing to ADISC */
4165 if (vport->port_type == LPFC_PHYSICAL_PORT)
4166 lpfc_issue_clear_la(phba, vport);
4167
4168 if (!(vport->fc_flag & FC_ABORT_DISCOVERY)) {
4169 vport->num_disc_nodes = 0;
4170 /* go thru NPR nodes and issue ELS PLOGIs */
4171 if (vport->fc_npr_cnt)
4172 lpfc_els_disc_plogi(vport);
4173
4174 if (!vport->num_disc_nodes) {
4175 spin_lock_irq(shost->host_lock);
4176 vport->fc_flag &= ~FC_NDISC_ACTIVE;
4177 spin_unlock_irq(shost->host_lock);
4178 lpfc_can_disctmo(vport);
4179 }
4180 }
4181 vport->port_state = LPFC_VPORT_READY;
4182 } else {
4183 /* Next do PLOGIs - if any */
4184 num_sent = lpfc_els_disc_plogi(vport);
4185
4186 if (num_sent)
4187 return;
4188
4189 if (vport->fc_flag & FC_RSCN_MODE) {
4190 /* Check to see if more RSCNs came in while we
4191 * were processing this one.
4192 */
4193 if ((vport->fc_rscn_id_cnt == 0) &&
4194 (!(vport->fc_flag & FC_RSCN_DISCOVERY))) {
4195 spin_lock_irq(shost->host_lock);
4196 vport->fc_flag &= ~FC_RSCN_MODE;
4197 spin_unlock_irq(shost->host_lock);
4198 lpfc_can_disctmo(vport);
4199 } else
4200 lpfc_els_handle_rscn(vport);
4201 }
4202 }
4203 return;
4204 }
4205
4206 /*
4207 * Ignore completion for all IOCBs on tx and txcmpl queue for ELS
4208 * ring the match the sppecified nodelist.
4209 */
4210 static void
4211 lpfc_free_tx(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
4212 {
4213 LIST_HEAD(completions);
4214 struct lpfc_sli *psli;
4215 IOCB_t *icmd;
4216 struct lpfc_iocbq *iocb, *next_iocb;
4217 struct lpfc_sli_ring *pring;
4218
4219 psli = &phba->sli;
4220 pring = &psli->ring[LPFC_ELS_RING];
4221
4222 /* Error matching iocb on txq or txcmplq
4223 * First check the txq.
4224 */
4225 spin_lock_irq(&phba->hbalock);
4226 list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
4227 if (iocb->context1 != ndlp) {
4228 continue;
4229 }
4230 icmd = &iocb->iocb;
4231 if ((icmd->ulpCommand == CMD_ELS_REQUEST64_CR) ||
4232 (icmd->ulpCommand == CMD_XMIT_ELS_RSP64_CX)) {
4233
4234 list_move_tail(&iocb->list, &completions);
4235 pring->txq_cnt--;
4236 }
4237 }
4238
4239 /* Next check the txcmplq */
4240 list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) {
4241 if (iocb->context1 != ndlp) {
4242 continue;
4243 }
4244 icmd = &iocb->iocb;
4245 if (icmd->ulpCommand == CMD_ELS_REQUEST64_CR ||
4246 icmd->ulpCommand == CMD_XMIT_ELS_RSP64_CX) {
4247 lpfc_sli_issue_abort_iotag(phba, pring, iocb);
4248 }
4249 }
4250 spin_unlock_irq(&phba->hbalock);
4251
4252 /* Cancel all the IOCBs from the completions list */
4253 lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
4254 IOERR_SLI_ABORTED);
4255 }
4256
4257 static void
4258 lpfc_disc_flush_list(struct lpfc_vport *vport)
4259 {
4260 struct lpfc_nodelist *ndlp, *next_ndlp;
4261 struct lpfc_hba *phba = vport->phba;
4262
4263 if (vport->fc_plogi_cnt || vport->fc_adisc_cnt) {
4264 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes,
4265 nlp_listp) {
4266 if (!NLP_CHK_NODE_ACT(ndlp))
4267 continue;
4268 if (ndlp->nlp_state == NLP_STE_PLOGI_ISSUE ||
4269 ndlp->nlp_state == NLP_STE_ADISC_ISSUE) {
4270 lpfc_free_tx(phba, ndlp);
4271 }
4272 }
4273 }
4274 }
4275
4276 void
4277 lpfc_cleanup_discovery_resources(struct lpfc_vport *vport)
4278 {
4279 lpfc_els_flush_rscn(vport);
4280 lpfc_els_flush_cmd(vport);
4281 lpfc_disc_flush_list(vport);
4282 }
4283
4284 /*****************************************************************************/
4285 /*
4286 * NAME: lpfc_disc_timeout
4287 *
4288 * FUNCTION: Fibre Channel driver discovery timeout routine.
4289 *
4290 * EXECUTION ENVIRONMENT: interrupt only
4291 *
4292 * CALLED FROM:
4293 * Timer function
4294 *
4295 * RETURNS:
4296 * none
4297 */
4298 /*****************************************************************************/
4299 void
4300 lpfc_disc_timeout(unsigned long ptr)
4301 {
4302 struct lpfc_vport *vport = (struct lpfc_vport *) ptr;
4303 struct lpfc_hba *phba = vport->phba;
4304 uint32_t tmo_posted;
4305 unsigned long flags = 0;
4306
4307 if (unlikely(!phba))
4308 return;
4309
4310 spin_lock_irqsave(&vport->work_port_lock, flags);
4311 tmo_posted = vport->work_port_events & WORKER_DISC_TMO;
4312 if (!tmo_posted)
4313 vport->work_port_events |= WORKER_DISC_TMO;
4314 spin_unlock_irqrestore(&vport->work_port_lock, flags);
4315
4316 if (!tmo_posted)
4317 lpfc_worker_wake_up(phba);
4318 return;
4319 }
4320
4321 static void
4322 lpfc_disc_timeout_handler(struct lpfc_vport *vport)
4323 {
4324 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4325 struct lpfc_hba *phba = vport->phba;
4326 struct lpfc_sli *psli = &phba->sli;
4327 struct lpfc_nodelist *ndlp, *next_ndlp;
4328 LPFC_MBOXQ_t *initlinkmbox;
4329 int rc, clrlaerr = 0;
4330
4331 if (!(vport->fc_flag & FC_DISC_TMO))
4332 return;
4333
4334 spin_lock_irq(shost->host_lock);
4335 vport->fc_flag &= ~FC_DISC_TMO;
4336 spin_unlock_irq(shost->host_lock);
4337
4338 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
4339 "disc timeout: state:x%x rtry:x%x flg:x%x",
4340 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
4341
4342 switch (vport->port_state) {
4343
4344 case LPFC_LOCAL_CFG_LINK:
4345 /* port_state is identically LPFC_LOCAL_CFG_LINK while waiting for
4346 * FAN
4347 */
4348 /* FAN timeout */
4349 lpfc_printf_vlog(vport, KERN_WARNING, LOG_DISCOVERY,
4350 "0221 FAN timeout\n");
4351 /* Start discovery by sending FLOGI, clean up old rpis */
4352 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes,
4353 nlp_listp) {
4354 if (!NLP_CHK_NODE_ACT(ndlp))
4355 continue;
4356 if (ndlp->nlp_state != NLP_STE_NPR_NODE)
4357 continue;
4358 if (ndlp->nlp_type & NLP_FABRIC) {
4359 /* Clean up the ndlp on Fabric connections */
4360 lpfc_drop_node(vport, ndlp);
4361
4362 } else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) {
4363 /* Fail outstanding IO now since device
4364 * is marked for PLOGI.
4365 */
4366 lpfc_unreg_rpi(vport, ndlp);
4367 }
4368 }
4369 if (vport->port_state != LPFC_FLOGI) {
4370 lpfc_initial_flogi(vport);
4371 return;
4372 }
4373 break;
4374
4375 case LPFC_FDISC:
4376 case LPFC_FLOGI:
4377 /* port_state is identically LPFC_FLOGI while waiting for FLOGI cmpl */
4378 /* Initial FLOGI timeout */
4379 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
4380 "0222 Initial %s timeout\n",
4381 vport->vpi ? "FDISC" : "FLOGI");
4382
4383 /* Assume no Fabric and go on with discovery.
4384 * Check for outstanding ELS FLOGI to abort.
4385 */
4386
4387 /* FLOGI failed, so just use loop map to make discovery list */
4388 lpfc_disc_list_loopmap(vport);
4389
4390 /* Start discovery */
4391 lpfc_disc_start(vport);
4392 break;
4393
4394 case LPFC_FABRIC_CFG_LINK:
4395 /* hba_state is identically LPFC_FABRIC_CFG_LINK while waiting for
4396 NameServer login */
4397 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
4398 "0223 Timeout while waiting for "
4399 "NameServer login\n");
4400 /* Next look for NameServer ndlp */
4401 ndlp = lpfc_findnode_did(vport, NameServer_DID);
4402 if (ndlp && NLP_CHK_NODE_ACT(ndlp))
4403 lpfc_els_abort(phba, ndlp);
4404
4405 /* ReStart discovery */
4406 goto restart_disc;
4407
4408 case LPFC_NS_QRY:
4409 /* Check for wait for NameServer Rsp timeout */
4410 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
4411 "0224 NameServer Query timeout "
4412 "Data: x%x x%x\n",
4413 vport->fc_ns_retry, LPFC_MAX_NS_RETRY);
4414
4415 if (vport->fc_ns_retry < LPFC_MAX_NS_RETRY) {
4416 /* Try it one more time */
4417 vport->fc_ns_retry++;
4418 rc = lpfc_ns_cmd(vport, SLI_CTNS_GID_FT,
4419 vport->fc_ns_retry, 0);
4420 if (rc == 0)
4421 break;
4422 }
4423 vport->fc_ns_retry = 0;
4424
4425 restart_disc:
4426 /*
4427 * Discovery is over.
4428 * set port_state to PORT_READY if SLI2.
4429 * cmpl_reg_vpi will set port_state to READY for SLI3.
4430 */
4431 if (phba->sli_rev < LPFC_SLI_REV4) {
4432 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
4433 lpfc_issue_reg_vpi(phba, vport);
4434 else { /* NPIV Not enabled */
4435 lpfc_issue_clear_la(phba, vport);
4436 vport->port_state = LPFC_VPORT_READY;
4437 }
4438 }
4439
4440 /* Setup and issue mailbox INITIALIZE LINK command */
4441 initlinkmbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
4442 if (!initlinkmbox) {
4443 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
4444 "0206 Device Discovery "
4445 "completion error\n");
4446 phba->link_state = LPFC_HBA_ERROR;
4447 break;
4448 }
4449
4450 lpfc_linkdown(phba);
4451 lpfc_init_link(phba, initlinkmbox, phba->cfg_topology,
4452 phba->cfg_link_speed);
4453 initlinkmbox->u.mb.un.varInitLnk.lipsr_AL_PA = 0;
4454 initlinkmbox->vport = vport;
4455 initlinkmbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
4456 rc = lpfc_sli_issue_mbox(phba, initlinkmbox, MBX_NOWAIT);
4457 lpfc_set_loopback_flag(phba);
4458 if (rc == MBX_NOT_FINISHED)
4459 mempool_free(initlinkmbox, phba->mbox_mem_pool);
4460
4461 break;
4462
4463 case LPFC_DISC_AUTH:
4464 /* Node Authentication timeout */
4465 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
4466 "0227 Node Authentication timeout\n");
4467 lpfc_disc_flush_list(vport);
4468
4469 /*
4470 * set port_state to PORT_READY if SLI2.
4471 * cmpl_reg_vpi will set port_state to READY for SLI3.
4472 */
4473 if (phba->sli_rev < LPFC_SLI_REV4) {
4474 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
4475 lpfc_issue_reg_vpi(phba, vport);
4476 else { /* NPIV Not enabled */
4477 lpfc_issue_clear_la(phba, vport);
4478 vport->port_state = LPFC_VPORT_READY;
4479 }
4480 }
4481 break;
4482
4483 case LPFC_VPORT_READY:
4484 if (vport->fc_flag & FC_RSCN_MODE) {
4485 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
4486 "0231 RSCN timeout Data: x%x "
4487 "x%x\n",
4488 vport->fc_ns_retry, LPFC_MAX_NS_RETRY);
4489
4490 /* Cleanup any outstanding ELS commands */
4491 lpfc_els_flush_cmd(vport);
4492
4493 lpfc_els_flush_rscn(vport);
4494 lpfc_disc_flush_list(vport);
4495 }
4496 break;
4497
4498 default:
4499 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
4500 "0273 Unexpected discovery timeout, "
4501 "vport State x%x\n", vport->port_state);
4502 break;
4503 }
4504
4505 switch (phba->link_state) {
4506 case LPFC_CLEAR_LA:
4507 /* CLEAR LA timeout */
4508 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
4509 "0228 CLEAR LA timeout\n");
4510 clrlaerr = 1;
4511 break;
4512
4513 case LPFC_LINK_UP:
4514 lpfc_issue_clear_la(phba, vport);
4515 /* Drop thru */
4516 case LPFC_LINK_UNKNOWN:
4517 case LPFC_WARM_START:
4518 case LPFC_INIT_START:
4519 case LPFC_INIT_MBX_CMDS:
4520 case LPFC_LINK_DOWN:
4521 case LPFC_HBA_ERROR:
4522 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
4523 "0230 Unexpected timeout, hba link "
4524 "state x%x\n", phba->link_state);
4525 clrlaerr = 1;
4526 break;
4527
4528 case LPFC_HBA_READY:
4529 break;
4530 }
4531
4532 if (clrlaerr) {
4533 lpfc_disc_flush_list(vport);
4534 psli->ring[(psli->extra_ring)].flag &= ~LPFC_STOP_IOCB_EVENT;
4535 psli->ring[(psli->fcp_ring)].flag &= ~LPFC_STOP_IOCB_EVENT;
4536 psli->ring[(psli->next_ring)].flag &= ~LPFC_STOP_IOCB_EVENT;
4537 vport->port_state = LPFC_VPORT_READY;
4538 }
4539
4540 return;
4541 }
4542
4543 /*
4544 * This routine handles processing a NameServer REG_LOGIN mailbox
4545 * command upon completion. It is setup in the LPFC_MBOXQ
4546 * as the completion routine when the command is
4547 * handed off to the SLI layer.
4548 */
4549 void
4550 lpfc_mbx_cmpl_fdmi_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
4551 {
4552 MAILBOX_t *mb = &pmb->u.mb;
4553 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
4554 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2;
4555 struct lpfc_vport *vport = pmb->vport;
4556
4557 pmb->context1 = NULL;
4558
4559 ndlp->nlp_rpi = mb->un.varWords[0];
4560 ndlp->nlp_flag |= NLP_RPI_VALID;
4561 ndlp->nlp_type |= NLP_FABRIC;
4562 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
4563
4564 /*
4565 * Start issuing Fabric-Device Management Interface (FDMI) command to
4566 * 0xfffffa (FDMI well known port) or Delay issuing FDMI command if
4567 * fdmi-on=2 (supporting RPA/hostnmae)
4568 */
4569
4570 if (vport->cfg_fdmi_on == 1)
4571 lpfc_fdmi_cmd(vport, ndlp, SLI_MGMT_DHBA);
4572 else
4573 mod_timer(&vport->fc_fdmitmo, jiffies + HZ * 60);
4574
4575 /* decrement the node reference count held for this callback
4576 * function.
4577 */
4578 lpfc_nlp_put(ndlp);
4579 lpfc_mbuf_free(phba, mp->virt, mp->phys);
4580 kfree(mp);
4581 mempool_free(pmb, phba->mbox_mem_pool);
4582
4583 return;
4584 }
4585
4586 static int
4587 lpfc_filter_by_rpi(struct lpfc_nodelist *ndlp, void *param)
4588 {
4589 uint16_t *rpi = param;
4590
4591 return ndlp->nlp_rpi == *rpi;
4592 }
4593
4594 static int
4595 lpfc_filter_by_wwpn(struct lpfc_nodelist *ndlp, void *param)
4596 {
4597 return memcmp(&ndlp->nlp_portname, param,
4598 sizeof(ndlp->nlp_portname)) == 0;
4599 }
4600
4601 static struct lpfc_nodelist *
4602 __lpfc_find_node(struct lpfc_vport *vport, node_filter filter, void *param)
4603 {
4604 struct lpfc_nodelist *ndlp;
4605
4606 list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
4607 if (filter(ndlp, param))
4608 return ndlp;
4609 }
4610 return NULL;
4611 }
4612
4613 /*
4614 * This routine looks up the ndlp lists for the given RPI. If rpi found it
4615 * returns the node list element pointer else return NULL.
4616 */
4617 struct lpfc_nodelist *
4618 __lpfc_findnode_rpi(struct lpfc_vport *vport, uint16_t rpi)
4619 {
4620 return __lpfc_find_node(vport, lpfc_filter_by_rpi, &rpi);
4621 }
4622
4623 /*
4624 * This routine looks up the ndlp lists for the given WWPN. If WWPN found it
4625 * returns the node element list pointer else return NULL.
4626 */
4627 struct lpfc_nodelist *
4628 lpfc_findnode_wwpn(struct lpfc_vport *vport, struct lpfc_name *wwpn)
4629 {
4630 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4631 struct lpfc_nodelist *ndlp;
4632
4633 spin_lock_irq(shost->host_lock);
4634 ndlp = __lpfc_find_node(vport, lpfc_filter_by_wwpn, wwpn);
4635 spin_unlock_irq(shost->host_lock);
4636 return ndlp;
4637 }
4638
4639 void
4640 lpfc_nlp_init(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
4641 uint32_t did)
4642 {
4643 memset(ndlp, 0, sizeof (struct lpfc_nodelist));
4644
4645 lpfc_initialize_node(vport, ndlp, did);
4646 INIT_LIST_HEAD(&ndlp->nlp_listp);
4647
4648 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
4649 "node init: did:x%x",
4650 ndlp->nlp_DID, 0, 0);
4651
4652 return;
4653 }
4654
4655 /* This routine releases all resources associated with a specifc NPort's ndlp
4656 * and mempool_free's the nodelist.
4657 */
4658 static void
4659 lpfc_nlp_release(struct kref *kref)
4660 {
4661 struct lpfc_hba *phba;
4662 unsigned long flags;
4663 struct lpfc_nodelist *ndlp = container_of(kref, struct lpfc_nodelist,
4664 kref);
4665
4666 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
4667 "node release: did:x%x flg:x%x type:x%x",
4668 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
4669
4670 lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE,
4671 "0279 lpfc_nlp_release: ndlp:x%p "
4672 "usgmap:x%x refcnt:%d\n",
4673 (void *)ndlp, ndlp->nlp_usg_map,
4674 atomic_read(&ndlp->kref.refcount));
4675
4676 /* remove ndlp from action. */
4677 lpfc_nlp_remove(ndlp->vport, ndlp);
4678
4679 /* clear the ndlp active flag for all release cases */
4680 phba = ndlp->phba;
4681 spin_lock_irqsave(&phba->ndlp_lock, flags);
4682 NLP_CLR_NODE_ACT(ndlp);
4683 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
4684
4685 /* free ndlp memory for final ndlp release */
4686 if (NLP_CHK_FREE_REQ(ndlp)) {
4687 kfree(ndlp->lat_data);
4688 mempool_free(ndlp, ndlp->phba->nlp_mem_pool);
4689 }
4690 }
4691
4692 /* This routine bumps the reference count for a ndlp structure to ensure
4693 * that one discovery thread won't free a ndlp while another discovery thread
4694 * is using it.
4695 */
4696 struct lpfc_nodelist *
4697 lpfc_nlp_get(struct lpfc_nodelist *ndlp)
4698 {
4699 struct lpfc_hba *phba;
4700 unsigned long flags;
4701
4702 if (ndlp) {
4703 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
4704 "node get: did:x%x flg:x%x refcnt:x%x",
4705 ndlp->nlp_DID, ndlp->nlp_flag,
4706 atomic_read(&ndlp->kref.refcount));
4707 /* The check of ndlp usage to prevent incrementing the
4708 * ndlp reference count that is in the process of being
4709 * released.
4710 */
4711 phba = ndlp->phba;
4712 spin_lock_irqsave(&phba->ndlp_lock, flags);
4713 if (!NLP_CHK_NODE_ACT(ndlp) || NLP_CHK_FREE_ACK(ndlp)) {
4714 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
4715 lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_NODE,
4716 "0276 lpfc_nlp_get: ndlp:x%p "
4717 "usgmap:x%x refcnt:%d\n",
4718 (void *)ndlp, ndlp->nlp_usg_map,
4719 atomic_read(&ndlp->kref.refcount));
4720 return NULL;
4721 } else
4722 kref_get(&ndlp->kref);
4723 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
4724 }
4725 return ndlp;
4726 }
4727
4728 /* This routine decrements the reference count for a ndlp structure. If the
4729 * count goes to 0, this indicates the the associated nodelist should be
4730 * freed. Returning 1 indicates the ndlp resource has been released; on the
4731 * other hand, returning 0 indicates the ndlp resource has not been released
4732 * yet.
4733 */
4734 int
4735 lpfc_nlp_put(struct lpfc_nodelist *ndlp)
4736 {
4737 struct lpfc_hba *phba;
4738 unsigned long flags;
4739
4740 if (!ndlp)
4741 return 1;
4742
4743 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
4744 "node put: did:x%x flg:x%x refcnt:x%x",
4745 ndlp->nlp_DID, ndlp->nlp_flag,
4746 atomic_read(&ndlp->kref.refcount));
4747 phba = ndlp->phba;
4748 spin_lock_irqsave(&phba->ndlp_lock, flags);
4749 /* Check the ndlp memory free acknowledge flag to avoid the
4750 * possible race condition that kref_put got invoked again
4751 * after previous one has done ndlp memory free.
4752 */
4753 if (NLP_CHK_FREE_ACK(ndlp)) {
4754 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
4755 lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_NODE,
4756 "0274 lpfc_nlp_put: ndlp:x%p "
4757 "usgmap:x%x refcnt:%d\n",
4758 (void *)ndlp, ndlp->nlp_usg_map,
4759 atomic_read(&ndlp->kref.refcount));
4760 return 1;
4761 }
4762 /* Check the ndlp inactivate log flag to avoid the possible
4763 * race condition that kref_put got invoked again after ndlp
4764 * is already in inactivating state.
4765 */
4766 if (NLP_CHK_IACT_REQ(ndlp)) {
4767 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
4768 lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_NODE,
4769 "0275 lpfc_nlp_put: ndlp:x%p "
4770 "usgmap:x%x refcnt:%d\n",
4771 (void *)ndlp, ndlp->nlp_usg_map,
4772 atomic_read(&ndlp->kref.refcount));
4773 return 1;
4774 }
4775 /* For last put, mark the ndlp usage flags to make sure no
4776 * other kref_get and kref_put on the same ndlp shall get
4777 * in between the process when the final kref_put has been
4778 * invoked on this ndlp.
4779 */
4780 if (atomic_read(&ndlp->kref.refcount) == 1) {
4781 /* Indicate ndlp is put to inactive state. */
4782 NLP_SET_IACT_REQ(ndlp);
4783 /* Acknowledge ndlp memory free has been seen. */
4784 if (NLP_CHK_FREE_REQ(ndlp))
4785 NLP_SET_FREE_ACK(ndlp);
4786 }
4787 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
4788 /* Note, the kref_put returns 1 when decrementing a reference
4789 * count that was 1, it invokes the release callback function,
4790 * but it still left the reference count as 1 (not actually
4791 * performs the last decrementation). Otherwise, it actually
4792 * decrements the reference count and returns 0.
4793 */
4794 return kref_put(&ndlp->kref, lpfc_nlp_release);
4795 }
4796
4797 /* This routine free's the specified nodelist if it is not in use
4798 * by any other discovery thread. This routine returns 1 if the
4799 * ndlp has been freed. A return value of 0 indicates the ndlp is
4800 * not yet been released.
4801 */
4802 int
4803 lpfc_nlp_not_used(struct lpfc_nodelist *ndlp)
4804 {
4805 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
4806 "node not used: did:x%x flg:x%x refcnt:x%x",
4807 ndlp->nlp_DID, ndlp->nlp_flag,
4808 atomic_read(&ndlp->kref.refcount));
4809 if (atomic_read(&ndlp->kref.refcount) == 1)
4810 if (lpfc_nlp_put(ndlp))
4811 return 1;
4812 return 0;
4813 }
4814
4815 /**
4816 * lpfc_fcf_inuse - Check if FCF can be unregistered.
4817 * @phba: Pointer to hba context object.
4818 *
4819 * This function iterate through all FC nodes associated
4820 * will all vports to check if there is any node with
4821 * fc_rports associated with it. If there is an fc_rport
4822 * associated with the node, then the node is either in
4823 * discovered state or its devloss_timer is pending.
4824 */
4825 static int
4826 lpfc_fcf_inuse(struct lpfc_hba *phba)
4827 {
4828 struct lpfc_vport **vports;
4829 int i, ret = 0;
4830 struct lpfc_nodelist *ndlp;
4831 struct Scsi_Host *shost;
4832
4833 vports = lpfc_create_vport_work_array(phba);
4834
4835 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
4836 shost = lpfc_shost_from_vport(vports[i]);
4837 spin_lock_irq(shost->host_lock);
4838 list_for_each_entry(ndlp, &vports[i]->fc_nodes, nlp_listp) {
4839 if (NLP_CHK_NODE_ACT(ndlp) && ndlp->rport &&
4840 (ndlp->rport->roles & FC_RPORT_ROLE_FCP_TARGET)) {
4841 ret = 1;
4842 spin_unlock_irq(shost->host_lock);
4843 goto out;
4844 } else {
4845 lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
4846 "2624 RPI %x DID %x flg %x still "
4847 "logged in\n",
4848 ndlp->nlp_rpi, ndlp->nlp_DID,
4849 ndlp->nlp_flag);
4850 if (ndlp->nlp_flag & NLP_RPI_VALID)
4851 ret = 1;
4852 }
4853 }
4854 spin_unlock_irq(shost->host_lock);
4855 }
4856 out:
4857 lpfc_destroy_vport_work_array(phba, vports);
4858 return ret;
4859 }
4860
4861 /**
4862 * lpfc_unregister_vfi_cmpl - Completion handler for unreg vfi.
4863 * @phba: Pointer to hba context object.
4864 * @mboxq: Pointer to mailbox object.
4865 *
4866 * This function frees memory associated with the mailbox command.
4867 */
4868 static void
4869 lpfc_unregister_vfi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
4870 {
4871 struct lpfc_vport *vport = mboxq->vport;
4872
4873 if (mboxq->u.mb.mbxStatus) {
4874 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX,
4875 "2555 UNREG_VFI mbxStatus error x%x "
4876 "HBA state x%x\n",
4877 mboxq->u.mb.mbxStatus, vport->port_state);
4878 }
4879 mempool_free(mboxq, phba->mbox_mem_pool);
4880 return;
4881 }
4882
4883 /**
4884 * lpfc_unregister_fcfi_cmpl - Completion handler for unreg fcfi.
4885 * @phba: Pointer to hba context object.
4886 * @mboxq: Pointer to mailbox object.
4887 *
4888 * This function frees memory associated with the mailbox command.
4889 */
4890 static void
4891 lpfc_unregister_fcfi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
4892 {
4893 struct lpfc_vport *vport = mboxq->vport;
4894
4895 if (mboxq->u.mb.mbxStatus) {
4896 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX,
4897 "2550 UNREG_FCFI mbxStatus error x%x "
4898 "HBA state x%x\n",
4899 mboxq->u.mb.mbxStatus, vport->port_state);
4900 }
4901 mempool_free(mboxq, phba->mbox_mem_pool);
4902 return;
4903 }
4904
4905 /**
4906 * lpfc_unregister_fcf_prep - Unregister fcf record preparation
4907 * @phba: Pointer to hba context object.
4908 *
4909 * This function prepare the HBA for unregistering the currently registered
4910 * FCF from the HBA. It performs unregistering, in order, RPIs, VPIs, and
4911 * VFIs.
4912 */
4913 int
4914 lpfc_unregister_fcf_prep(struct lpfc_hba *phba)
4915 {
4916 LPFC_MBOXQ_t *mbox;
4917 struct lpfc_vport **vports;
4918 struct lpfc_nodelist *ndlp;
4919 struct Scsi_Host *shost;
4920 int i, rc;
4921
4922 /* Unregister RPIs */
4923 if (lpfc_fcf_inuse(phba))
4924 lpfc_unreg_hba_rpis(phba);
4925
4926 /* At this point, all discovery is aborted */
4927 phba->pport->port_state = LPFC_VPORT_UNKNOWN;
4928
4929 /* Unregister VPIs */
4930 vports = lpfc_create_vport_work_array(phba);
4931 if (vports && (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED))
4932 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
4933 /* Stop FLOGI/FDISC retries */
4934 ndlp = lpfc_findnode_did(vports[i], Fabric_DID);
4935 if (ndlp)
4936 lpfc_cancel_retry_delay_tmo(vports[i], ndlp);
4937 lpfc_mbx_unreg_vpi(vports[i]);
4938 shost = lpfc_shost_from_vport(vports[i]);
4939 spin_lock_irq(shost->host_lock);
4940 vports[i]->fc_flag |= FC_VPORT_NEEDS_INIT_VPI;
4941 vports[i]->vpi_state &= ~LPFC_VPI_REGISTERED;
4942 spin_unlock_irq(shost->host_lock);
4943 }
4944 lpfc_destroy_vport_work_array(phba, vports);
4945
4946 /* Cleanup any outstanding ELS commands */
4947 lpfc_els_flush_all_cmd(phba);
4948
4949 /* Unregister VFI */
4950 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
4951 if (!mbox) {
4952 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX,
4953 "2556 UNREG_VFI mbox allocation failed"
4954 "HBA state x%x\n", phba->pport->port_state);
4955 return -ENOMEM;
4956 }
4957
4958 lpfc_unreg_vfi(mbox, phba->pport);
4959 mbox->vport = phba->pport;
4960 mbox->mbox_cmpl = lpfc_unregister_vfi_cmpl;
4961
4962 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
4963 if (rc == MBX_NOT_FINISHED) {
4964 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX,
4965 "2557 UNREG_VFI issue mbox failed rc x%x "
4966 "HBA state x%x\n",
4967 rc, phba->pport->port_state);
4968 mempool_free(mbox, phba->mbox_mem_pool);
4969 return -EIO;
4970 }
4971
4972 shost = lpfc_shost_from_vport(phba->pport);
4973 spin_lock_irq(shost->host_lock);
4974 phba->pport->fc_flag &= ~FC_VFI_REGISTERED;
4975 spin_unlock_irq(shost->host_lock);
4976
4977 return 0;
4978 }
4979
4980 /**
4981 * lpfc_sli4_unregister_fcf - Unregister currently registered FCF record
4982 * @phba: Pointer to hba context object.
4983 *
4984 * This function issues synchronous unregister FCF mailbox command to HBA to
4985 * unregister the currently registered FCF record. The driver does not reset
4986 * the driver FCF usage state flags.
4987 *
4988 * Return 0 if successfully issued, none-zero otherwise.
4989 */
4990 int
4991 lpfc_sli4_unregister_fcf(struct lpfc_hba *phba)
4992 {
4993 LPFC_MBOXQ_t *mbox;
4994 int rc;
4995
4996 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
4997 if (!mbox) {
4998 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX,
4999 "2551 UNREG_FCFI mbox allocation failed"
5000 "HBA state x%x\n", phba->pport->port_state);
5001 return -ENOMEM;
5002 }
5003 lpfc_unreg_fcfi(mbox, phba->fcf.fcfi);
5004 mbox->vport = phba->pport;
5005 mbox->mbox_cmpl = lpfc_unregister_fcfi_cmpl;
5006 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
5007
5008 if (rc == MBX_NOT_FINISHED) {
5009 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
5010 "2552 Unregister FCFI command failed rc x%x "
5011 "HBA state x%x\n",
5012 rc, phba->pport->port_state);
5013 return -EINVAL;
5014 }
5015 return 0;
5016 }
5017
5018 /**
5019 * lpfc_unregister_fcf_rescan - Unregister currently registered fcf and rescan
5020 * @phba: Pointer to hba context object.
5021 *
5022 * This function unregisters the currently reigstered FCF. This function
5023 * also tries to find another FCF for discovery by rescan the HBA FCF table.
5024 */
5025 void
5026 lpfc_unregister_fcf_rescan(struct lpfc_hba *phba)
5027 {
5028 int rc;
5029
5030 /* Preparation for unregistering fcf */
5031 rc = lpfc_unregister_fcf_prep(phba);
5032 if (rc) {
5033 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY,
5034 "2748 Failed to prepare for unregistering "
5035 "HBA's FCF record: rc=%d\n", rc);
5036 return;
5037 }
5038
5039 /* Now, unregister FCF record and reset HBA FCF state */
5040 rc = lpfc_sli4_unregister_fcf(phba);
5041 if (rc)
5042 return;
5043 /* Reset HBA FCF states after successful unregister FCF */
5044 phba->fcf.fcf_flag = 0;
5045 phba->fcf.current_rec.flag = 0;
5046
5047 /*
5048 * If driver is not unloading, check if there is any other
5049 * FCF record that can be used for discovery.
5050 */
5051 if ((phba->pport->load_flag & FC_UNLOADING) ||
5052 (phba->link_state < LPFC_LINK_UP))
5053 return;
5054
5055 /* This is considered as the initial FCF discovery scan */
5056 spin_lock_irq(&phba->hbalock);
5057 phba->fcf.fcf_flag |= FCF_INIT_DISC;
5058 spin_unlock_irq(&phba->hbalock);
5059 rc = lpfc_sli4_fcf_scan_read_fcf_rec(phba, LPFC_FCOE_FCF_GET_FIRST);
5060
5061 if (rc) {
5062 spin_lock_irq(&phba->hbalock);
5063 phba->fcf.fcf_flag &= ~FCF_INIT_DISC;
5064 spin_unlock_irq(&phba->hbalock);
5065 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX,
5066 "2553 lpfc_unregister_unused_fcf failed "
5067 "to read FCF record HBA state x%x\n",
5068 phba->pport->port_state);
5069 }
5070 }
5071
5072 /**
5073 * lpfc_unregister_fcf - Unregister the currently registered fcf record
5074 * @phba: Pointer to hba context object.
5075 *
5076 * This function just unregisters the currently reigstered FCF. It does not
5077 * try to find another FCF for discovery.
5078 */
5079 void
5080 lpfc_unregister_fcf(struct lpfc_hba *phba)
5081 {
5082 int rc;
5083
5084 /* Preparation for unregistering fcf */
5085 rc = lpfc_unregister_fcf_prep(phba);
5086 if (rc) {
5087 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY,
5088 "2749 Failed to prepare for unregistering "
5089 "HBA's FCF record: rc=%d\n", rc);
5090 return;
5091 }
5092
5093 /* Now, unregister FCF record and reset HBA FCF state */
5094 rc = lpfc_sli4_unregister_fcf(phba);
5095 if (rc)
5096 return;
5097 /* Set proper HBA FCF states after successful unregister FCF */
5098 spin_lock_irq(&phba->hbalock);
5099 phba->fcf.fcf_flag &= ~FCF_REGISTERED;
5100 spin_unlock_irq(&phba->hbalock);
5101 }
5102
5103 /**
5104 * lpfc_unregister_unused_fcf - Unregister FCF if all devices are disconnected.
5105 * @phba: Pointer to hba context object.
5106 *
5107 * This function check if there are any connected remote port for the FCF and
5108 * if all the devices are disconnected, this function unregister FCFI.
5109 * This function also tries to use another FCF for discovery.
5110 */
5111 void
5112 lpfc_unregister_unused_fcf(struct lpfc_hba *phba)
5113 {
5114 /*
5115 * If HBA is not running in FIP mode or if HBA does not support
5116 * FCoE or if FCF is not registered, do nothing.
5117 */
5118 spin_lock_irq(&phba->hbalock);
5119 if (!(phba->hba_flag & HBA_FCOE_SUPPORT) ||
5120 !(phba->fcf.fcf_flag & FCF_REGISTERED) ||
5121 !(phba->hba_flag & HBA_FIP_SUPPORT)) {
5122 spin_unlock_irq(&phba->hbalock);
5123 return;
5124 }
5125 spin_unlock_irq(&phba->hbalock);
5126
5127 if (lpfc_fcf_inuse(phba))
5128 return;
5129
5130 lpfc_unregister_fcf_rescan(phba);
5131 }
5132
5133 /**
5134 * lpfc_read_fcf_conn_tbl - Create driver FCF connection table.
5135 * @phba: Pointer to hba context object.
5136 * @buff: Buffer containing the FCF connection table as in the config
5137 * region.
5138 * This function create driver data structure for the FCF connection
5139 * record table read from config region 23.
5140 */
5141 static void
5142 lpfc_read_fcf_conn_tbl(struct lpfc_hba *phba,
5143 uint8_t *buff)
5144 {
5145 struct lpfc_fcf_conn_entry *conn_entry, *next_conn_entry;
5146 struct lpfc_fcf_conn_hdr *conn_hdr;
5147 struct lpfc_fcf_conn_rec *conn_rec;
5148 uint32_t record_count;
5149 int i;
5150
5151 /* Free the current connect table */
5152 list_for_each_entry_safe(conn_entry, next_conn_entry,
5153 &phba->fcf_conn_rec_list, list) {
5154 list_del_init(&conn_entry->list);
5155 kfree(conn_entry);
5156 }
5157
5158 conn_hdr = (struct lpfc_fcf_conn_hdr *) buff;
5159 record_count = conn_hdr->length * sizeof(uint32_t)/
5160 sizeof(struct lpfc_fcf_conn_rec);
5161
5162 conn_rec = (struct lpfc_fcf_conn_rec *)
5163 (buff + sizeof(struct lpfc_fcf_conn_hdr));
5164
5165 for (i = 0; i < record_count; i++) {
5166 if (!(conn_rec[i].flags & FCFCNCT_VALID))
5167 continue;
5168 conn_entry = kzalloc(sizeof(struct lpfc_fcf_conn_entry),
5169 GFP_KERNEL);
5170 if (!conn_entry) {
5171 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
5172 "2566 Failed to allocate connection"
5173 " table entry\n");
5174 return;
5175 }
5176
5177 memcpy(&conn_entry->conn_rec, &conn_rec[i],
5178 sizeof(struct lpfc_fcf_conn_rec));
5179 conn_entry->conn_rec.vlan_tag =
5180 le16_to_cpu(conn_entry->conn_rec.vlan_tag) & 0xFFF;
5181 conn_entry->conn_rec.flags =
5182 le16_to_cpu(conn_entry->conn_rec.flags);
5183 list_add_tail(&conn_entry->list,
5184 &phba->fcf_conn_rec_list);
5185 }
5186 }
5187
5188 /**
5189 * lpfc_read_fcoe_param - Read FCoe parameters from conf region..
5190 * @phba: Pointer to hba context object.
5191 * @buff: Buffer containing the FCoE parameter data structure.
5192 *
5193 * This function update driver data structure with config
5194 * parameters read from config region 23.
5195 */
5196 static void
5197 lpfc_read_fcoe_param(struct lpfc_hba *phba,
5198 uint8_t *buff)
5199 {
5200 struct lpfc_fip_param_hdr *fcoe_param_hdr;
5201 struct lpfc_fcoe_params *fcoe_param;
5202
5203 fcoe_param_hdr = (struct lpfc_fip_param_hdr *)
5204 buff;
5205 fcoe_param = (struct lpfc_fcoe_params *)
5206 (buff + sizeof(struct lpfc_fip_param_hdr));
5207
5208 if ((fcoe_param_hdr->parm_version != FIPP_VERSION) ||
5209 (fcoe_param_hdr->length != FCOE_PARAM_LENGTH))
5210 return;
5211
5212 if (fcoe_param_hdr->parm_flags & FIPP_VLAN_VALID) {
5213 phba->valid_vlan = 1;
5214 phba->vlan_id = le16_to_cpu(fcoe_param->vlan_tag) &
5215 0xFFF;
5216 }
5217
5218 phba->fc_map[0] = fcoe_param->fc_map[0];
5219 phba->fc_map[1] = fcoe_param->fc_map[1];
5220 phba->fc_map[2] = fcoe_param->fc_map[2];
5221 return;
5222 }
5223
5224 /**
5225 * lpfc_get_rec_conf23 - Get a record type in config region data.
5226 * @buff: Buffer containing config region 23 data.
5227 * @size: Size of the data buffer.
5228 * @rec_type: Record type to be searched.
5229 *
5230 * This function searches config region data to find the begining
5231 * of the record specified by record_type. If record found, this
5232 * function return pointer to the record else return NULL.
5233 */
5234 static uint8_t *
5235 lpfc_get_rec_conf23(uint8_t *buff, uint32_t size, uint8_t rec_type)
5236 {
5237 uint32_t offset = 0, rec_length;
5238
5239 if ((buff[0] == LPFC_REGION23_LAST_REC) ||
5240 (size < sizeof(uint32_t)))
5241 return NULL;
5242
5243 rec_length = buff[offset + 1];
5244
5245 /*
5246 * One TLV record has one word header and number of data words
5247 * specified in the rec_length field of the record header.
5248 */
5249 while ((offset + rec_length * sizeof(uint32_t) + sizeof(uint32_t))
5250 <= size) {
5251 if (buff[offset] == rec_type)
5252 return &buff[offset];
5253
5254 if (buff[offset] == LPFC_REGION23_LAST_REC)
5255 return NULL;
5256
5257 offset += rec_length * sizeof(uint32_t) + sizeof(uint32_t);
5258 rec_length = buff[offset + 1];
5259 }
5260 return NULL;
5261 }
5262
5263 /**
5264 * lpfc_parse_fcoe_conf - Parse FCoE config data read from config region 23.
5265 * @phba: Pointer to lpfc_hba data structure.
5266 * @buff: Buffer containing config region 23 data.
5267 * @size: Size of the data buffer.
5268 *
5269 * This fuction parse the FCoE config parameters in config region 23 and
5270 * populate driver data structure with the parameters.
5271 */
5272 void
5273 lpfc_parse_fcoe_conf(struct lpfc_hba *phba,
5274 uint8_t *buff,
5275 uint32_t size)
5276 {
5277 uint32_t offset = 0, rec_length;
5278 uint8_t *rec_ptr;
5279
5280 /*
5281 * If data size is less than 2 words signature and version cannot be
5282 * verified.
5283 */
5284 if (size < 2*sizeof(uint32_t))
5285 return;
5286
5287 /* Check the region signature first */
5288 if (memcmp(buff, LPFC_REGION23_SIGNATURE, 4)) {
5289 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
5290 "2567 Config region 23 has bad signature\n");
5291 return;
5292 }
5293
5294 offset += 4;
5295
5296 /* Check the data structure version */
5297 if (buff[offset] != LPFC_REGION23_VERSION) {
5298 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
5299 "2568 Config region 23 has bad version\n");
5300 return;
5301 }
5302 offset += 4;
5303
5304 rec_length = buff[offset + 1];
5305
5306 /* Read FCoE param record */
5307 rec_ptr = lpfc_get_rec_conf23(&buff[offset],
5308 size - offset, FCOE_PARAM_TYPE);
5309 if (rec_ptr)
5310 lpfc_read_fcoe_param(phba, rec_ptr);
5311
5312 /* Read FCF connection table */
5313 rec_ptr = lpfc_get_rec_conf23(&buff[offset],
5314 size - offset, FCOE_CONN_TBL_TYPE);
5315 if (rec_ptr)
5316 lpfc_read_fcf_conn_tbl(phba, rec_ptr);
5317
5318 }
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree