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x86: add PAGE_KERNEL_EXEC_NOCACHE
[wrt350n-kernel.git] / drivers / scsi / lpfc / lpfc_hbadisc.c
blobdc042bd97baa62e3ebb2fcd09b322f85f921df2e
1 /*******************************************************************
2 * This file is part of the Emulex Linux Device Driver for *
3 * Fibre Channel Host Bus Adapters. *
4 * Copyright (C) 2004-2007 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_hw.h"
33 #include "lpfc_disc.h"
34 #include "lpfc_sli.h"
35 #include "lpfc_scsi.h"
36 #include "lpfc.h"
37 #include "lpfc_logmsg.h"
38 #include "lpfc_crtn.h"
39 #include "lpfc_vport.h"
40 #include "lpfc_debugfs.h"
41
42 /* AlpaArray for assignment of scsid for scan-down and bind_method */
43 static uint8_t lpfcAlpaArray[] = {
44 0xEF, 0xE8, 0xE4, 0xE2, 0xE1, 0xE0, 0xDC, 0xDA, 0xD9, 0xD6,
45 0xD5, 0xD4, 0xD3, 0xD2, 0xD1, 0xCE, 0xCD, 0xCC, 0xCB, 0xCA,
46 0xC9, 0xC7, 0xC6, 0xC5, 0xC3, 0xBC, 0xBA, 0xB9, 0xB6, 0xB5,
47 0xB4, 0xB3, 0xB2, 0xB1, 0xAE, 0xAD, 0xAC, 0xAB, 0xAA, 0xA9,
48 0xA7, 0xA6, 0xA5, 0xA3, 0x9F, 0x9E, 0x9D, 0x9B, 0x98, 0x97,
49 0x90, 0x8F, 0x88, 0x84, 0x82, 0x81, 0x80, 0x7C, 0x7A, 0x79,
50 0x76, 0x75, 0x74, 0x73, 0x72, 0x71, 0x6E, 0x6D, 0x6C, 0x6B,
51 0x6A, 0x69, 0x67, 0x66, 0x65, 0x63, 0x5C, 0x5A, 0x59, 0x56,
52 0x55, 0x54, 0x53, 0x52, 0x51, 0x4E, 0x4D, 0x4C, 0x4B, 0x4A,
53 0x49, 0x47, 0x46, 0x45, 0x43, 0x3C, 0x3A, 0x39, 0x36, 0x35,
54 0x34, 0x33, 0x32, 0x31, 0x2E, 0x2D, 0x2C, 0x2B, 0x2A, 0x29,
55 0x27, 0x26, 0x25, 0x23, 0x1F, 0x1E, 0x1D, 0x1B, 0x18, 0x17,
56 0x10, 0x0F, 0x08, 0x04, 0x02, 0x01
57 };
58
59 static void lpfc_disc_timeout_handler(struct lpfc_vport *);
60 static void lpfc_disc_flush_list(struct lpfc_vport *vport);
61
62 void
63 lpfc_terminate_rport_io(struct fc_rport *rport)
64 {
65 struct lpfc_rport_data *rdata;
66 struct lpfc_nodelist * ndlp;
67 struct lpfc_hba *phba;
68
69 rdata = rport->dd_data;
70 ndlp = rdata->pnode;
71
72 if (!ndlp) {
73 if (rport->roles & FC_RPORT_ROLE_FCP_TARGET)
74 printk(KERN_ERR "Cannot find remote node"
75 " to terminate I/O Data x%x\n",
76 rport->port_id);
77 return;
78 }
79
80 phba = ndlp->vport->phba;
81
82 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_RPORT,
83 "rport terminate: sid:x%x did:x%x flg:x%x",
84 ndlp->nlp_sid, ndlp->nlp_DID, ndlp->nlp_flag);
85
86 if (ndlp->nlp_sid != NLP_NO_SID) {
87 lpfc_sli_abort_iocb(ndlp->vport,
88 &phba->sli.ring[phba->sli.fcp_ring],
89 ndlp->nlp_sid, 0, LPFC_CTX_TGT);
90 }
91
92 /*
93 * A device is normally blocked for rediscovery and unblocked when
94 * devloss timeout happens. In case a vport is removed or driver
95 * unloaded before devloss timeout happens, we need to unblock here.
96 */
97 scsi_target_unblock(&rport->dev);
98 return;
99 }
100
101 /*
102 * This function will be called when dev_loss_tmo fire.
103 */
104 void
105 lpfc_dev_loss_tmo_callbk(struct fc_rport *rport)
106 {
107 struct lpfc_rport_data *rdata;
108 struct lpfc_nodelist * ndlp;
109 struct lpfc_vport *vport;
110 struct lpfc_hba *phba;
111 struct lpfc_work_evt *evtp;
112 int put_node;
113 int put_rport;
114
115 rdata = rport->dd_data;
116 ndlp = rdata->pnode;
117 if (!ndlp)
118 return;
119
120 vport = ndlp->vport;
121 phba = vport->phba;
122
123 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
124 "rport devlosscb: sid:x%x did:x%x flg:x%x",
125 ndlp->nlp_sid, ndlp->nlp_DID, ndlp->nlp_flag);
126
127 /* Don't defer this if we are in the process of deleting the vport
128 * or unloading the driver. The unload will cleanup the node
129 * appropriately we just need to cleanup the ndlp rport info here.
130 */
131 if (vport->load_flag & FC_UNLOADING) {
132 put_node = rdata->pnode != NULL;
133 put_rport = ndlp->rport != NULL;
134 rdata->pnode = NULL;
135 ndlp->rport = NULL;
136 if (put_node)
137 lpfc_nlp_put(ndlp);
138 if (put_rport)
139 put_device(&rport->dev);
140 return;
141 }
142
143 if (ndlp->nlp_state == NLP_STE_MAPPED_NODE)
144 return;
145
146 evtp = &ndlp->dev_loss_evt;
147
148 if (!list_empty(&evtp->evt_listp))
149 return;
150
151 spin_lock_irq(&phba->hbalock);
152 /* We need to hold the node by incrementing the reference
153 * count until this queued work is done
154 */
155 evtp->evt_arg1 = lpfc_nlp_get(ndlp);
156 evtp->evt = LPFC_EVT_DEV_LOSS;
157 list_add_tail(&evtp->evt_listp, &phba->work_list);
158 if (phba->work_wait)
159 wake_up(phba->work_wait);
160
161 spin_unlock_irq(&phba->hbalock);
162
163 return;
164 }
165
166 /*
167 * This function is called from the worker thread when dev_loss_tmo
168 * expire.
169 */
170 static void
171 lpfc_dev_loss_tmo_handler(struct lpfc_nodelist *ndlp)
172 {
173 struct lpfc_rport_data *rdata;
174 struct fc_rport *rport;
175 struct lpfc_vport *vport;
176 struct lpfc_hba *phba;
177 uint8_t *name;
178 int put_node;
179 int put_rport;
180 int warn_on = 0;
181
182 rport = ndlp->rport;
183
184 if (!rport)
185 return;
186
187 rdata = rport->dd_data;
188 name = (uint8_t *) &ndlp->nlp_portname;
189 vport = ndlp->vport;
190 phba = vport->phba;
191
192 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
193 "rport devlosstmo:did:x%x type:x%x id:x%x",
194 ndlp->nlp_DID, ndlp->nlp_type, rport->scsi_target_id);
195
196 /* Don't defer this if we are in the process of deleting the vport
197 * or unloading the driver. The unload will cleanup the node
198 * appropriately we just need to cleanup the ndlp rport info here.
199 */
200 if (vport->load_flag & FC_UNLOADING) {
201 if (ndlp->nlp_sid != NLP_NO_SID) {
202 /* flush the target */
203 lpfc_sli_abort_iocb(vport,
204 &phba->sli.ring[phba->sli.fcp_ring],
205 ndlp->nlp_sid, 0, LPFC_CTX_TGT);
206 }
207 put_node = rdata->pnode != NULL;
208 put_rport = ndlp->rport != NULL;
209 rdata->pnode = NULL;
210 ndlp->rport = NULL;
211 if (put_node)
212 lpfc_nlp_put(ndlp);
213 if (put_rport)
214 put_device(&rport->dev);
215 return;
216 }
217
218 if (ndlp->nlp_state == NLP_STE_MAPPED_NODE)
219 return;
220
221 if (ndlp->nlp_type & NLP_FABRIC) {
222 /* We will clean up these Nodes in linkup */
223 put_node = rdata->pnode != NULL;
224 put_rport = ndlp->rport != NULL;
225 rdata->pnode = NULL;
226 ndlp->rport = NULL;
227 if (put_node)
228 lpfc_nlp_put(ndlp);
229 if (put_rport)
230 put_device(&rport->dev);
231 return;
232 }
233
234 if (ndlp->nlp_sid != NLP_NO_SID) {
235 warn_on = 1;
236 /* flush the target */
237 lpfc_sli_abort_iocb(vport, &phba->sli.ring[phba->sli.fcp_ring],
238 ndlp->nlp_sid, 0, LPFC_CTX_TGT);
239 }
240 if (vport->load_flag & FC_UNLOADING)
241 warn_on = 0;
242
243 if (warn_on) {
244 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
245 "0203 Devloss timeout on "
246 "WWPN %x:%x:%x:%x:%x:%x:%x:%x "
247 "NPort x%x Data: x%x x%x x%x\n",
248 *name, *(name+1), *(name+2), *(name+3),
249 *(name+4), *(name+5), *(name+6), *(name+7),
250 ndlp->nlp_DID, ndlp->nlp_flag,
251 ndlp->nlp_state, ndlp->nlp_rpi);
252 } else {
253 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
254 "0204 Devloss timeout on "
255 "WWPN %x:%x:%x:%x:%x:%x:%x:%x "
256 "NPort x%x Data: x%x x%x x%x\n",
257 *name, *(name+1), *(name+2), *(name+3),
258 *(name+4), *(name+5), *(name+6), *(name+7),
259 ndlp->nlp_DID, ndlp->nlp_flag,
260 ndlp->nlp_state, ndlp->nlp_rpi);
261 }
262
263 put_node = rdata->pnode != NULL;
264 put_rport = ndlp->rport != NULL;
265 rdata->pnode = NULL;
266 ndlp->rport = NULL;
267 if (put_node)
268 lpfc_nlp_put(ndlp);
269 if (put_rport)
270 put_device(&rport->dev);
271
272 if (!(vport->load_flag & FC_UNLOADING) &&
273 !(ndlp->nlp_flag & NLP_DELAY_TMO) &&
274 !(ndlp->nlp_flag & NLP_NPR_2B_DISC) &&
275 (ndlp->nlp_state != NLP_STE_UNMAPPED_NODE)) {
276 lpfc_disc_state_machine(vport, ndlp, NULL, NLP_EVT_DEVICE_RM);
277 }
278 }
279
280
281 void
282 lpfc_worker_wake_up(struct lpfc_hba *phba)
283 {
284 wake_up(phba->work_wait);
285 return;
286 }
287
288 static void
289 lpfc_work_list_done(struct lpfc_hba *phba)
290 {
291 struct lpfc_work_evt *evtp = NULL;
292 struct lpfc_nodelist *ndlp;
293 int free_evt;
294
295 spin_lock_irq(&phba->hbalock);
296 while (!list_empty(&phba->work_list)) {
297 list_remove_head((&phba->work_list), evtp, typeof(*evtp),
298 evt_listp);
299 spin_unlock_irq(&phba->hbalock);
300 free_evt = 1;
301 switch (evtp->evt) {
302 case LPFC_EVT_ELS_RETRY:
303 ndlp = (struct lpfc_nodelist *) (evtp->evt_arg1);
304 lpfc_els_retry_delay_handler(ndlp);
305 free_evt = 0; /* evt is part of ndlp */
306 /* decrement the node reference count held
307 * for this queued work
308 */
309 lpfc_nlp_put(ndlp);
310 break;
311 case LPFC_EVT_DEV_LOSS:
312 ndlp = (struct lpfc_nodelist *)(evtp->evt_arg1);
313 lpfc_dev_loss_tmo_handler(ndlp);
314 free_evt = 0;
315 /* decrement the node reference count held for
316 * this queued work
317 */
318 lpfc_nlp_put(ndlp);
319 break;
320 case LPFC_EVT_ONLINE:
321 if (phba->link_state < LPFC_LINK_DOWN)
322 *(int *) (evtp->evt_arg1) = lpfc_online(phba);
323 else
324 *(int *) (evtp->evt_arg1) = 0;
325 complete((struct completion *)(evtp->evt_arg2));
326 break;
327 case LPFC_EVT_OFFLINE_PREP:
328 if (phba->link_state >= LPFC_LINK_DOWN)
329 lpfc_offline_prep(phba);
330 *(int *)(evtp->evt_arg1) = 0;
331 complete((struct completion *)(evtp->evt_arg2));
332 break;
333 case LPFC_EVT_OFFLINE:
334 lpfc_offline(phba);
335 lpfc_sli_brdrestart(phba);
336 *(int *)(evtp->evt_arg1) =
337 lpfc_sli_brdready(phba, HS_FFRDY | HS_MBRDY);
338 lpfc_unblock_mgmt_io(phba);
339 complete((struct completion *)(evtp->evt_arg2));
340 break;
341 case LPFC_EVT_WARM_START:
342 lpfc_offline(phba);
343 lpfc_reset_barrier(phba);
344 lpfc_sli_brdreset(phba);
345 lpfc_hba_down_post(phba);
346 *(int *)(evtp->evt_arg1) =
347 lpfc_sli_brdready(phba, HS_MBRDY);
348 lpfc_unblock_mgmt_io(phba);
349 complete((struct completion *)(evtp->evt_arg2));
350 break;
351 case LPFC_EVT_KILL:
352 lpfc_offline(phba);
353 *(int *)(evtp->evt_arg1)
354 = (phba->pport->stopped)
355 ? 0 : lpfc_sli_brdkill(phba);
356 lpfc_unblock_mgmt_io(phba);
357 complete((struct completion *)(evtp->evt_arg2));
358 break;
359 }
360 if (free_evt)
361 kfree(evtp);
362 spin_lock_irq(&phba->hbalock);
363 }
364 spin_unlock_irq(&phba->hbalock);
365
366 }
367
368 static void
369 lpfc_work_done(struct lpfc_hba *phba)
370 {
371 struct lpfc_sli_ring *pring;
372 uint32_t ha_copy, status, control, work_port_events;
373 struct lpfc_vport **vports;
374 struct lpfc_vport *vport;
375 int i;
376
377 spin_lock_irq(&phba->hbalock);
378 ha_copy = phba->work_ha;
379 phba->work_ha = 0;
380 spin_unlock_irq(&phba->hbalock);
381
382 if (ha_copy & HA_ERATT)
383 lpfc_handle_eratt(phba);
384
385 if (ha_copy & HA_MBATT)
386 lpfc_sli_handle_mb_event(phba);
387
388 if (ha_copy & HA_LATT)
389 lpfc_handle_latt(phba);
390 vports = lpfc_create_vport_work_array(phba);
391 if (vports != NULL)
392 for(i = 0; i <= phba->max_vpi; i++) {
393 /*
394 * We could have no vports in array if unloading, so if
395 * this happens then just use the pport
396 */
397 if (vports[i] == NULL && i == 0)
398 vport = phba->pport;
399 else
400 vport = vports[i];
401 if (vport == NULL)
402 break;
403 work_port_events = vport->work_port_events;
404 if (work_port_events & WORKER_DISC_TMO)
405 lpfc_disc_timeout_handler(vport);
406 if (work_port_events & WORKER_ELS_TMO)
407 lpfc_els_timeout_handler(vport);
408 if (work_port_events & WORKER_HB_TMO)
409 lpfc_hb_timeout_handler(phba);
410 if (work_port_events & WORKER_MBOX_TMO)
411 lpfc_mbox_timeout_handler(phba);
412 if (work_port_events & WORKER_FABRIC_BLOCK_TMO)
413 lpfc_unblock_fabric_iocbs(phba);
414 if (work_port_events & WORKER_FDMI_TMO)
415 lpfc_fdmi_timeout_handler(vport);
416 if (work_port_events & WORKER_RAMP_DOWN_QUEUE)
417 lpfc_ramp_down_queue_handler(phba);
418 if (work_port_events & WORKER_RAMP_UP_QUEUE)
419 lpfc_ramp_up_queue_handler(phba);
420 spin_lock_irq(&vport->work_port_lock);
421 vport->work_port_events &= ~work_port_events;
422 spin_unlock_irq(&vport->work_port_lock);
423 }
424 lpfc_destroy_vport_work_array(phba, vports);
425
426 pring = &phba->sli.ring[LPFC_ELS_RING];
427 status = (ha_copy & (HA_RXMASK << (4*LPFC_ELS_RING)));
428 status >>= (4*LPFC_ELS_RING);
429 if ((status & HA_RXMASK)
430 || (pring->flag & LPFC_DEFERRED_RING_EVENT)) {
431 if (pring->flag & LPFC_STOP_IOCB_EVENT) {
432 pring->flag |= LPFC_DEFERRED_RING_EVENT;
433 } else {
434 lpfc_sli_handle_slow_ring_event(phba, pring,
435 (status &
436 HA_RXMASK));
437 pring->flag &= ~LPFC_DEFERRED_RING_EVENT;
438 }
439 /*
440 * Turn on Ring interrupts
441 */
442 spin_lock_irq(&phba->hbalock);
443 control = readl(phba->HCregaddr);
444 if (!(control & (HC_R0INT_ENA << LPFC_ELS_RING))) {
445 lpfc_debugfs_slow_ring_trc(phba,
446 "WRK Enable ring: cntl:x%x hacopy:x%x",
447 control, ha_copy, 0);
448
449 control |= (HC_R0INT_ENA << LPFC_ELS_RING);
450 writel(control, phba->HCregaddr);
451 readl(phba->HCregaddr); /* flush */
452 }
453 else {
454 lpfc_debugfs_slow_ring_trc(phba,
455 "WRK Ring ok: cntl:x%x hacopy:x%x",
456 control, ha_copy, 0);
457 }
458 spin_unlock_irq(&phba->hbalock);
459 }
460 lpfc_work_list_done(phba);
461 }
462
463 static int
464 check_work_wait_done(struct lpfc_hba *phba)
465 {
466 struct lpfc_vport *vport;
467 struct lpfc_sli_ring *pring = &phba->sli.ring[LPFC_ELS_RING];
468 int rc = 0;
469
470 spin_lock_irq(&phba->hbalock);
471 list_for_each_entry(vport, &phba->port_list, listentry) {
472 if (vport->work_port_events) {
473 rc = 1;
474 break;
475 }
476 }
477 if (rc || phba->work_ha || (!list_empty(&phba->work_list)) ||
478 kthread_should_stop() || pring->flag & LPFC_DEFERRED_RING_EVENT) {
479 rc = 1;
480 phba->work_found++;
481 } else
482 phba->work_found = 0;
483 spin_unlock_irq(&phba->hbalock);
484 return rc;
485 }
486
487
488 int
489 lpfc_do_work(void *p)
490 {
491 struct lpfc_hba *phba = p;
492 int rc;
493 DECLARE_WAIT_QUEUE_HEAD_ONSTACK(work_waitq);
494
495 set_user_nice(current, -20);
496 phba->work_wait = &work_waitq;
497 phba->work_found = 0;
498
499 while (1) {
500
501 rc = wait_event_interruptible(work_waitq,
502 check_work_wait_done(phba));
503
504 BUG_ON(rc);
505
506 if (kthread_should_stop())
507 break;
508
509 lpfc_work_done(phba);
510
511 /* If there is alot of slow ring work, like during link up
512 * check_work_wait_done() may cause this thread to not give
513 * up the CPU for very long periods of time. This may cause
514 * soft lockups or other problems. To avoid these situations
515 * give up the CPU here after LPFC_MAX_WORKER_ITERATION
516 * consecutive iterations.
517 */
518 if (phba->work_found >= LPFC_MAX_WORKER_ITERATION) {
519 phba->work_found = 0;
520 schedule();
521 }
522 }
523 phba->work_wait = NULL;
524 return 0;
525 }
526
527 /*
528 * This is only called to handle FC worker events. Since this a rare
529 * occurance, we allocate a struct lpfc_work_evt structure here instead of
530 * embedding it in the IOCB.
531 */
532 int
533 lpfc_workq_post_event(struct lpfc_hba *phba, void *arg1, void *arg2,
534 uint32_t evt)
535 {
536 struct lpfc_work_evt *evtp;
537 unsigned long flags;
538
539 /*
540 * All Mailbox completions and LPFC_ELS_RING rcv ring IOCB events will
541 * be queued to worker thread for processing
542 */
543 evtp = kmalloc(sizeof(struct lpfc_work_evt), GFP_ATOMIC);
544 if (!evtp)
545 return 0;
546
547 evtp->evt_arg1 = arg1;
548 evtp->evt_arg2 = arg2;
549 evtp->evt = evt;
550
551 spin_lock_irqsave(&phba->hbalock, flags);
552 list_add_tail(&evtp->evt_listp, &phba->work_list);
553 if (phba->work_wait)
554 lpfc_worker_wake_up(phba);
555 spin_unlock_irqrestore(&phba->hbalock, flags);
556
557 return 1;
558 }
559
560 void
561 lpfc_cleanup_rpis(struct lpfc_vport *vport, int remove)
562 {
563 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
564 struct lpfc_hba *phba = vport->phba;
565 struct lpfc_nodelist *ndlp, *next_ndlp;
566 int rc;
567
568 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) {
569 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
570 continue;
571
572 if ((phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN) ||
573 ((vport->port_type == LPFC_NPIV_PORT) &&
574 (ndlp->nlp_DID == NameServer_DID)))
575 lpfc_unreg_rpi(vport, ndlp);
576
577 /* Leave Fabric nodes alone on link down */
578 if (!remove && ndlp->nlp_type & NLP_FABRIC)
579 continue;
580 rc = lpfc_disc_state_machine(vport, ndlp, NULL,
581 remove
582 ? NLP_EVT_DEVICE_RM
583 : NLP_EVT_DEVICE_RECOVERY);
584 }
585 if (phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN) {
586 lpfc_mbx_unreg_vpi(vport);
587 spin_lock_irq(shost->host_lock);
588 vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
589 spin_unlock_irq(shost->host_lock);
590 }
591 }
592
593 void
594 lpfc_port_link_failure(struct lpfc_vport *vport)
595 {
596 /* Cleanup any outstanding RSCN activity */
597 lpfc_els_flush_rscn(vport);
598
599 /* Cleanup any outstanding ELS commands */
600 lpfc_els_flush_cmd(vport);
601
602 lpfc_cleanup_rpis(vport, 0);
603
604 /* Turn off discovery timer if its running */
605 lpfc_can_disctmo(vport);
606 }
607
608 static void
609 lpfc_linkdown_port(struct lpfc_vport *vport)
610 {
611 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
612
613 fc_host_post_event(shost, fc_get_event_number(), FCH_EVT_LINKDOWN, 0);
614
615 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
616 "Link Down: state:x%x rtry:x%x flg:x%x",
617 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
618
619 lpfc_port_link_failure(vport);
620
621 }
622
623 int
624 lpfc_linkdown(struct lpfc_hba *phba)
625 {
626 struct lpfc_vport *vport = phba->pport;
627 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
628 struct lpfc_vport **vports;
629 LPFC_MBOXQ_t *mb;
630 int i;
631
632 if (phba->link_state == LPFC_LINK_DOWN) {
633 return 0;
634 }
635 spin_lock_irq(&phba->hbalock);
636 if (phba->link_state > LPFC_LINK_DOWN) {
637 phba->link_state = LPFC_LINK_DOWN;
638 phba->pport->fc_flag &= ~FC_LBIT;
639 }
640 spin_unlock_irq(&phba->hbalock);
641 vports = lpfc_create_vport_work_array(phba);
642 if (vports != NULL)
643 for(i = 0; i <= phba->max_vpi && vports[i] != NULL; i++) {
644 /* Issue a LINK DOWN event to all nodes */
645 lpfc_linkdown_port(vports[i]);
646 }
647 lpfc_destroy_vport_work_array(phba, vports);
648 /* Clean up any firmware default rpi's */
649 mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
650 if (mb) {
651 lpfc_unreg_did(phba, 0xffff, 0xffffffff, mb);
652 mb->vport = vport;
653 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
654 if (lpfc_sli_issue_mbox(phba, mb, MBX_NOWAIT)
655 == MBX_NOT_FINISHED) {
656 mempool_free(mb, phba->mbox_mem_pool);
657 }
658 }
659
660 /* Setup myDID for link up if we are in pt2pt mode */
661 if (phba->pport->fc_flag & FC_PT2PT) {
662 phba->pport->fc_myDID = 0;
663 mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
664 if (mb) {
665 lpfc_config_link(phba, mb);
666 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
667 mb->vport = vport;
668 if (lpfc_sli_issue_mbox(phba, mb, MBX_NOWAIT)
669 == MBX_NOT_FINISHED) {
670 mempool_free(mb, phba->mbox_mem_pool);
671 }
672 }
673 spin_lock_irq(shost->host_lock);
674 phba->pport->fc_flag &= ~(FC_PT2PT | FC_PT2PT_PLOGI);
675 spin_unlock_irq(shost->host_lock);
676 }
677
678 return 0;
679 }
680
681 static void
682 lpfc_linkup_cleanup_nodes(struct lpfc_vport *vport)
683 {
684 struct lpfc_nodelist *ndlp;
685
686 list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
687 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
688 continue;
689
690 if (ndlp->nlp_type & NLP_FABRIC) {
691 /* On Linkup its safe to clean up the ndlp
692 * from Fabric connections.
693 */
694 if (ndlp->nlp_DID != Fabric_DID)
695 lpfc_unreg_rpi(vport, ndlp);
696 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
697 } else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) {
698 /* Fail outstanding IO now since device is
699 * marked for PLOGI.
700 */
701 lpfc_unreg_rpi(vport, ndlp);
702 }
703 }
704 }
705
706 static void
707 lpfc_linkup_port(struct lpfc_vport *vport)
708 {
709 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
710 struct lpfc_hba *phba = vport->phba;
711
712 if ((vport->load_flag & FC_UNLOADING) != 0)
713 return;
714
715 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
716 "Link Up: top:x%x speed:x%x flg:x%x",
717 phba->fc_topology, phba->fc_linkspeed, phba->link_flag);
718
719 /* If NPIV is not enabled, only bring the physical port up */
720 if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
721 (vport != phba->pport))
722 return;
723
724 fc_host_post_event(shost, fc_get_event_number(), FCH_EVT_LINKUP, 0);
725
726 spin_lock_irq(shost->host_lock);
727 vport->fc_flag &= ~(FC_PT2PT | FC_PT2PT_PLOGI | FC_ABORT_DISCOVERY |
728 FC_RSCN_MODE | FC_NLP_MORE | FC_RSCN_DISCOVERY);
729 vport->fc_flag |= FC_NDISC_ACTIVE;
730 vport->fc_ns_retry = 0;
731 spin_unlock_irq(shost->host_lock);
732
733 if (vport->fc_flag & FC_LBIT)
734 lpfc_linkup_cleanup_nodes(vport);
735
736 }
737
738 static int
739 lpfc_linkup(struct lpfc_hba *phba)
740 {
741 struct lpfc_vport **vports;
742 int i;
743
744 phba->link_state = LPFC_LINK_UP;
745
746 /* Unblock fabric iocbs if they are blocked */
747 clear_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags);
748 del_timer_sync(&phba->fabric_block_timer);
749
750 vports = lpfc_create_vport_work_array(phba);
751 if (vports != NULL)
752 for(i = 0; i <= phba->max_vpi && vports[i] != NULL; i++)
753 lpfc_linkup_port(vports[i]);
754 lpfc_destroy_vport_work_array(phba, vports);
755 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
756 lpfc_issue_clear_la(phba, phba->pport);
757
758 return 0;
759 }
760
761 /*
762 * This routine handles processing a CLEAR_LA mailbox
763 * command upon completion. It is setup in the LPFC_MBOXQ
764 * as the completion routine when the command is
765 * handed off to the SLI layer.
766 */
767 static void
768 lpfc_mbx_cmpl_clear_la(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
769 {
770 struct lpfc_vport *vport = pmb->vport;
771 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
772 struct lpfc_sli *psli = &phba->sli;
773 MAILBOX_t *mb = &pmb->mb;
774 uint32_t control;
775
776 /* Since we don't do discovery right now, turn these off here */
777 psli->ring[psli->extra_ring].flag &= ~LPFC_STOP_IOCB_EVENT;
778 psli->ring[psli->fcp_ring].flag &= ~LPFC_STOP_IOCB_EVENT;
779 psli->ring[psli->next_ring].flag &= ~LPFC_STOP_IOCB_EVENT;
780
781 /* Check for error */
782 if ((mb->mbxStatus) && (mb->mbxStatus != 0x1601)) {
783 /* CLEAR_LA mbox error <mbxStatus> state <hba_state> */
784 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
785 "0320 CLEAR_LA mbxStatus error x%x hba "
786 "state x%x\n",
787 mb->mbxStatus, vport->port_state);
788 phba->link_state = LPFC_HBA_ERROR;
789 goto out;
790 }
791
792 if (vport->port_type == LPFC_PHYSICAL_PORT)
793 phba->link_state = LPFC_HBA_READY;
794
795 spin_lock_irq(&phba->hbalock);
796 psli->sli_flag |= LPFC_PROCESS_LA;
797 control = readl(phba->HCregaddr);
798 control |= HC_LAINT_ENA;
799 writel(control, phba->HCregaddr);
800 readl(phba->HCregaddr); /* flush */
801 spin_unlock_irq(&phba->hbalock);
802 return;
803
804 vport->num_disc_nodes = 0;
805 /* go thru NPR nodes and issue ELS PLOGIs */
806 if (vport->fc_npr_cnt)
807 lpfc_els_disc_plogi(vport);
808
809 if (!vport->num_disc_nodes) {
810 spin_lock_irq(shost->host_lock);
811 vport->fc_flag &= ~FC_NDISC_ACTIVE;
812 spin_unlock_irq(shost->host_lock);
813 }
814
815 vport->port_state = LPFC_VPORT_READY;
816
817 out:
818 /* Device Discovery completes */
819 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
820 "0225 Device Discovery completes\n");
821 mempool_free(pmb, phba->mbox_mem_pool);
822
823 spin_lock_irq(shost->host_lock);
824 vport->fc_flag &= ~(FC_ABORT_DISCOVERY | FC_ESTABLISH_LINK);
825 spin_unlock_irq(shost->host_lock);
826
827 del_timer_sync(&phba->fc_estabtmo);
828
829 lpfc_can_disctmo(vport);
830
831 /* turn on Link Attention interrupts */
832
833 spin_lock_irq(&phba->hbalock);
834 psli->sli_flag |= LPFC_PROCESS_LA;
835 control = readl(phba->HCregaddr);
836 control |= HC_LAINT_ENA;
837 writel(control, phba->HCregaddr);
838 readl(phba->HCregaddr); /* flush */
839 spin_unlock_irq(&phba->hbalock);
840
841 return;
842 }
843
844
845 static void
846 lpfc_mbx_cmpl_local_config_link(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
847 {
848 struct lpfc_vport *vport = pmb->vport;
849
850 if (pmb->mb.mbxStatus)
851 goto out;
852
853 mempool_free(pmb, phba->mbox_mem_pool);
854
855 if (phba->fc_topology == TOPOLOGY_LOOP &&
856 vport->fc_flag & FC_PUBLIC_LOOP &&
857 !(vport->fc_flag & FC_LBIT)) {
858 /* Need to wait for FAN - use discovery timer
859 * for timeout. port_state is identically
860 * LPFC_LOCAL_CFG_LINK while waiting for FAN
861 */
862 lpfc_set_disctmo(vport);
863 return;
864 }
865
866 /* Start discovery by sending a FLOGI. port_state is identically
867 * LPFC_FLOGI while waiting for FLOGI cmpl
868 */
869 if (vport->port_state != LPFC_FLOGI) {
870 lpfc_initial_flogi(vport);
871 }
872 return;
873
874 out:
875 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
876 "0306 CONFIG_LINK mbxStatus error x%x "
877 "HBA state x%x\n",
878 pmb->mb.mbxStatus, vport->port_state);
879 mempool_free(pmb, phba->mbox_mem_pool);
880
881 lpfc_linkdown(phba);
882
883 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
884 "0200 CONFIG_LINK bad hba state x%x\n",
885 vport->port_state);
886
887 lpfc_issue_clear_la(phba, vport);
888 return;
889 }
890
891 static void
892 lpfc_mbx_cmpl_read_sparam(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
893 {
894 MAILBOX_t *mb = &pmb->mb;
895 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) pmb->context1;
896 struct lpfc_vport *vport = pmb->vport;
897
898
899 /* Check for error */
900 if (mb->mbxStatus) {
901 /* READ_SPARAM mbox error <mbxStatus> state <hba_state> */
902 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
903 "0319 READ_SPARAM mbxStatus error x%x "
904 "hba state x%x>\n",
905 mb->mbxStatus, vport->port_state);
906 lpfc_linkdown(phba);
907 goto out;
908 }
909
910 memcpy((uint8_t *) &vport->fc_sparam, (uint8_t *) mp->virt,
911 sizeof (struct serv_parm));
912 if (phba->cfg_soft_wwnn)
913 u64_to_wwn(phba->cfg_soft_wwnn,
914 vport->fc_sparam.nodeName.u.wwn);
915 if (phba->cfg_soft_wwpn)
916 u64_to_wwn(phba->cfg_soft_wwpn,
917 vport->fc_sparam.portName.u.wwn);
918 memcpy(&vport->fc_nodename, &vport->fc_sparam.nodeName,
919 sizeof(vport->fc_nodename));
920 memcpy(&vport->fc_portname, &vport->fc_sparam.portName,
921 sizeof(vport->fc_portname));
922 if (vport->port_type == LPFC_PHYSICAL_PORT) {
923 memcpy(&phba->wwnn, &vport->fc_nodename, sizeof(phba->wwnn));
924 memcpy(&phba->wwpn, &vport->fc_portname, sizeof(phba->wwnn));
925 }
926
927 lpfc_mbuf_free(phba, mp->virt, mp->phys);
928 kfree(mp);
929 mempool_free(pmb, phba->mbox_mem_pool);
930 return;
931
932 out:
933 pmb->context1 = NULL;
934 lpfc_mbuf_free(phba, mp->virt, mp->phys);
935 kfree(mp);
936 lpfc_issue_clear_la(phba, vport);
937 mempool_free(pmb, phba->mbox_mem_pool);
938 return;
939 }
940
941 static void
942 lpfc_mbx_process_link_up(struct lpfc_hba *phba, READ_LA_VAR *la)
943 {
944 struct lpfc_vport *vport = phba->pport;
945 LPFC_MBOXQ_t *sparam_mbox, *cfglink_mbox;
946 int i;
947 struct lpfc_dmabuf *mp;
948 int rc;
949
950 sparam_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
951 cfglink_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
952
953 spin_lock_irq(&phba->hbalock);
954 switch (la->UlnkSpeed) {
955 case LA_1GHZ_LINK:
956 phba->fc_linkspeed = LA_1GHZ_LINK;
957 break;
958 case LA_2GHZ_LINK:
959 phba->fc_linkspeed = LA_2GHZ_LINK;
960 break;
961 case LA_4GHZ_LINK:
962 phba->fc_linkspeed = LA_4GHZ_LINK;
963 break;
964 case LA_8GHZ_LINK:
965 phba->fc_linkspeed = LA_8GHZ_LINK;
966 break;
967 default:
968 phba->fc_linkspeed = LA_UNKNW_LINK;
969 break;
970 }
971
972 phba->fc_topology = la->topology;
973 phba->link_flag &= ~LS_NPIV_FAB_SUPPORTED;
974
975 if (phba->fc_topology == TOPOLOGY_LOOP) {
976 phba->sli3_options &= ~LPFC_SLI3_NPIV_ENABLED;
977
978 /* Get Loop Map information */
979 if (la->il)
980 vport->fc_flag |= FC_LBIT;
981
982 vport->fc_myDID = la->granted_AL_PA;
983 i = la->un.lilpBde64.tus.f.bdeSize;
984
985 if (i == 0) {
986 phba->alpa_map[0] = 0;
987 } else {
988 if (vport->cfg_log_verbose & LOG_LINK_EVENT) {
989 int numalpa, j, k;
990 union {
991 uint8_t pamap[16];
992 struct {
993 uint32_t wd1;
994 uint32_t wd2;
995 uint32_t wd3;
996 uint32_t wd4;
997 } pa;
998 } un;
999 numalpa = phba->alpa_map[0];
1000 j = 0;
1001 while (j < numalpa) {
1002 memset(un.pamap, 0, 16);
1003 for (k = 1; j < numalpa; k++) {
1004 un.pamap[k - 1] =
1005 phba->alpa_map[j + 1];
1006 j++;
1007 if (k == 16)
1008 break;
1009 }
1010 /* Link Up Event ALPA map */
1011 lpfc_printf_log(phba,
1012 KERN_WARNING,
1013 LOG_LINK_EVENT,
1014 "1304 Link Up Event "
1015 "ALPA map Data: x%x "
1016 "x%x x%x x%x\n",
1017 un.pa.wd1, un.pa.wd2,
1018 un.pa.wd3, un.pa.wd4);
1019 }
1020 }
1021 }
1022 } else {
1023 if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)) {
1024 if (phba->max_vpi && phba->cfg_enable_npiv &&
1025 (phba->sli_rev == 3))
1026 phba->sli3_options |= LPFC_SLI3_NPIV_ENABLED;
1027 }
1028 vport->fc_myDID = phba->fc_pref_DID;
1029 vport->fc_flag |= FC_LBIT;
1030 }
1031 spin_unlock_irq(&phba->hbalock);
1032
1033 lpfc_linkup(phba);
1034 if (sparam_mbox) {
1035 lpfc_read_sparam(phba, sparam_mbox, 0);
1036 sparam_mbox->vport = vport;
1037 sparam_mbox->mbox_cmpl = lpfc_mbx_cmpl_read_sparam;
1038 rc = lpfc_sli_issue_mbox(phba, sparam_mbox, MBX_NOWAIT);
1039 if (rc == MBX_NOT_FINISHED) {
1040 mp = (struct lpfc_dmabuf *) sparam_mbox->context1;
1041 lpfc_mbuf_free(phba, mp->virt, mp->phys);
1042 kfree(mp);
1043 mempool_free(sparam_mbox, phba->mbox_mem_pool);
1044 if (cfglink_mbox)
1045 mempool_free(cfglink_mbox, phba->mbox_mem_pool);
1046 goto out;
1047 }
1048 }
1049
1050 if (cfglink_mbox) {
1051 vport->port_state = LPFC_LOCAL_CFG_LINK;
1052 lpfc_config_link(phba, cfglink_mbox);
1053 cfglink_mbox->vport = vport;
1054 cfglink_mbox->mbox_cmpl = lpfc_mbx_cmpl_local_config_link;
1055 rc = lpfc_sli_issue_mbox(phba, cfglink_mbox, MBX_NOWAIT);
1056 if (rc != MBX_NOT_FINISHED)
1057 return;
1058 mempool_free(cfglink_mbox, phba->mbox_mem_pool);
1059 }
1060 out:
1061 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
1062 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
1063 "0263 Discovery Mailbox error: state: 0x%x : %p %p\n",
1064 vport->port_state, sparam_mbox, cfglink_mbox);
1065 lpfc_issue_clear_la(phba, vport);
1066 return;
1067 }
1068
1069 static void
1070 lpfc_mbx_issue_link_down(struct lpfc_hba *phba)
1071 {
1072 uint32_t control;
1073 struct lpfc_sli *psli = &phba->sli;
1074
1075 lpfc_linkdown(phba);
1076
1077 /* turn on Link Attention interrupts - no CLEAR_LA needed */
1078 spin_lock_irq(&phba->hbalock);
1079 psli->sli_flag |= LPFC_PROCESS_LA;
1080 control = readl(phba->HCregaddr);
1081 control |= HC_LAINT_ENA;
1082 writel(control, phba->HCregaddr);
1083 readl(phba->HCregaddr); /* flush */
1084 spin_unlock_irq(&phba->hbalock);
1085 }
1086
1087 /*
1088 * This routine handles processing a READ_LA mailbox
1089 * command upon completion. It is setup in the LPFC_MBOXQ
1090 * as the completion routine when the command is
1091 * handed off to the SLI layer.
1092 */
1093 void
1094 lpfc_mbx_cmpl_read_la(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1095 {
1096 struct lpfc_vport *vport = pmb->vport;
1097 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1098 READ_LA_VAR *la;
1099 MAILBOX_t *mb = &pmb->mb;
1100 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
1101
1102 /* Check for error */
1103 if (mb->mbxStatus) {
1104 lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT,
1105 "1307 READ_LA mbox error x%x state x%x\n",
1106 mb->mbxStatus, vport->port_state);
1107 lpfc_mbx_issue_link_down(phba);
1108 phba->link_state = LPFC_HBA_ERROR;
1109 goto lpfc_mbx_cmpl_read_la_free_mbuf;
1110 }
1111
1112 la = (READ_LA_VAR *) & pmb->mb.un.varReadLA;
1113
1114 memcpy(&phba->alpa_map[0], mp->virt, 128);
1115
1116 spin_lock_irq(shost->host_lock);
1117 if (la->pb)
1118 vport->fc_flag |= FC_BYPASSED_MODE;
1119 else
1120 vport->fc_flag &= ~FC_BYPASSED_MODE;
1121 spin_unlock_irq(shost->host_lock);
1122
1123 if (((phba->fc_eventTag + 1) < la->eventTag) ||
1124 (phba->fc_eventTag == la->eventTag)) {
1125 phba->fc_stat.LinkMultiEvent++;
1126 if (la->attType == AT_LINK_UP)
1127 if (phba->fc_eventTag != 0)
1128 lpfc_linkdown(phba);
1129 }
1130
1131 phba->fc_eventTag = la->eventTag;
1132
1133 if (la->attType == AT_LINK_UP) {
1134 phba->fc_stat.LinkUp++;
1135 if (phba->link_flag & LS_LOOPBACK_MODE) {
1136 lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT,
1137 "1306 Link Up Event in loop back mode "
1138 "x%x received Data: x%x x%x x%x x%x\n",
1139 la->eventTag, phba->fc_eventTag,
1140 la->granted_AL_PA, la->UlnkSpeed,
1141 phba->alpa_map[0]);
1142 } else {
1143 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
1144 "1303 Link Up Event x%x received "
1145 "Data: x%x x%x x%x x%x\n",
1146 la->eventTag, phba->fc_eventTag,
1147 la->granted_AL_PA, la->UlnkSpeed,
1148 phba->alpa_map[0]);
1149 }
1150 lpfc_mbx_process_link_up(phba, la);
1151 } else {
1152 phba->fc_stat.LinkDown++;
1153 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
1154 "1305 Link Down Event x%x received "
1155 "Data: x%x x%x x%x\n",
1156 la->eventTag, phba->fc_eventTag,
1157 phba->pport->port_state, vport->fc_flag);
1158 lpfc_mbx_issue_link_down(phba);
1159 }
1160
1161 lpfc_mbx_cmpl_read_la_free_mbuf:
1162 lpfc_mbuf_free(phba, mp->virt, mp->phys);
1163 kfree(mp);
1164 mempool_free(pmb, phba->mbox_mem_pool);
1165 return;
1166 }
1167
1168 /*
1169 * This routine handles processing a REG_LOGIN mailbox
1170 * command upon completion. It is setup in the LPFC_MBOXQ
1171 * as the completion routine when the command is
1172 * handed off to the SLI layer.
1173 */
1174 void
1175 lpfc_mbx_cmpl_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1176 {
1177 struct lpfc_vport *vport = pmb->vport;
1178 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
1179 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2;
1180
1181 pmb->context1 = NULL;
1182
1183 /* Good status, call state machine */
1184 lpfc_disc_state_machine(vport, ndlp, pmb, NLP_EVT_CMPL_REG_LOGIN);
1185 lpfc_mbuf_free(phba, mp->virt, mp->phys);
1186 kfree(mp);
1187 mempool_free(pmb, phba->mbox_mem_pool);
1188 /* decrement the node reference count held for this callback
1189 * function.
1190 */
1191 lpfc_nlp_put(ndlp);
1192
1193 return;
1194 }
1195
1196 static void
1197 lpfc_mbx_cmpl_unreg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1198 {
1199 MAILBOX_t *mb = &pmb->mb;
1200 struct lpfc_vport *vport = pmb->vport;
1201 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1202
1203 switch (mb->mbxStatus) {
1204 case 0x0011:
1205 case 0x0020:
1206 case 0x9700:
1207 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
1208 "0911 cmpl_unreg_vpi, mb status = 0x%x\n",
1209 mb->mbxStatus);
1210 break;
1211 }
1212 vport->unreg_vpi_cmpl = VPORT_OK;
1213 mempool_free(pmb, phba->mbox_mem_pool);
1214 /*
1215 * This shost reference might have been taken at the beginning of
1216 * lpfc_vport_delete()
1217 */
1218 if (vport->load_flag & FC_UNLOADING)
1219 scsi_host_put(shost);
1220 }
1221
1222 void
1223 lpfc_mbx_unreg_vpi(struct lpfc_vport *vport)
1224 {
1225 struct lpfc_hba *phba = vport->phba;
1226 LPFC_MBOXQ_t *mbox;
1227 int rc;
1228
1229 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1230 if (!mbox)
1231 return;
1232
1233 lpfc_unreg_vpi(phba, vport->vpi, mbox);
1234 mbox->vport = vport;
1235 mbox->mbox_cmpl = lpfc_mbx_cmpl_unreg_vpi;
1236 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
1237 if (rc == MBX_NOT_FINISHED) {
1238 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX | LOG_VPORT,
1239 "1800 Could not issue unreg_vpi\n");
1240 mempool_free(mbox, phba->mbox_mem_pool);
1241 vport->unreg_vpi_cmpl = VPORT_ERROR;
1242 }
1243 }
1244
1245 static void
1246 lpfc_mbx_cmpl_reg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1247 {
1248 struct lpfc_vport *vport = pmb->vport;
1249 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1250 MAILBOX_t *mb = &pmb->mb;
1251
1252 switch (mb->mbxStatus) {
1253 case 0x0011:
1254 case 0x9601:
1255 case 0x9602:
1256 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
1257 "0912 cmpl_reg_vpi, mb status = 0x%x\n",
1258 mb->mbxStatus);
1259 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
1260 spin_lock_irq(shost->host_lock);
1261 vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
1262 spin_unlock_irq(shost->host_lock);
1263 vport->fc_myDID = 0;
1264 goto out;
1265 }
1266
1267 vport->num_disc_nodes = 0;
1268 /* go thru NPR list and issue ELS PLOGIs */
1269 if (vport->fc_npr_cnt)
1270 lpfc_els_disc_plogi(vport);
1271
1272 if (!vport->num_disc_nodes) {
1273 spin_lock_irq(shost->host_lock);
1274 vport->fc_flag &= ~FC_NDISC_ACTIVE;
1275 spin_unlock_irq(shost->host_lock);
1276 lpfc_can_disctmo(vport);
1277 }
1278 vport->port_state = LPFC_VPORT_READY;
1279
1280 out:
1281 mempool_free(pmb, phba->mbox_mem_pool);
1282 return;
1283 }
1284
1285 /*
1286 * This routine handles processing a Fabric REG_LOGIN mailbox
1287 * command upon completion. It is setup in the LPFC_MBOXQ
1288 * as the completion routine when the command is
1289 * handed off to the SLI layer.
1290 */
1291 void
1292 lpfc_mbx_cmpl_fabric_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1293 {
1294 struct lpfc_vport *vport = pmb->vport;
1295 MAILBOX_t *mb = &pmb->mb;
1296 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
1297 struct lpfc_nodelist *ndlp;
1298 struct lpfc_vport **vports;
1299 int i;
1300
1301 ndlp = (struct lpfc_nodelist *) pmb->context2;
1302 pmb->context1 = NULL;
1303 pmb->context2 = NULL;
1304 if (mb->mbxStatus) {
1305 lpfc_mbuf_free(phba, mp->virt, mp->phys);
1306 kfree(mp);
1307 mempool_free(pmb, phba->mbox_mem_pool);
1308 lpfc_nlp_put(ndlp);
1309
1310 if (phba->fc_topology == TOPOLOGY_LOOP) {
1311 /* FLOGI failed, use loop map to make discovery list */
1312 lpfc_disc_list_loopmap(vport);
1313
1314 /* Start discovery */
1315 lpfc_disc_start(vport);
1316 return;
1317 }
1318
1319 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
1320 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
1321 "0258 Register Fabric login error: 0x%x\n",
1322 mb->mbxStatus);
1323 return;
1324 }
1325
1326 ndlp->nlp_rpi = mb->un.varWords[0];
1327 ndlp->nlp_type |= NLP_FABRIC;
1328 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1329
1330 lpfc_nlp_put(ndlp); /* Drop the reference from the mbox */
1331
1332 if (vport->port_state == LPFC_FABRIC_CFG_LINK) {
1333 vports = lpfc_create_vport_work_array(phba);
1334 if (vports != NULL)
1335 for(i = 0;
1336 i <= phba->max_vpi && vports[i] != NULL;
1337 i++) {
1338 if (vports[i]->port_type == LPFC_PHYSICAL_PORT)
1339 continue;
1340 if (phba->link_flag & LS_NPIV_FAB_SUPPORTED)
1341 lpfc_initial_fdisc(vports[i]);
1342 else if (phba->sli3_options &
1343 LPFC_SLI3_NPIV_ENABLED) {
1344 lpfc_vport_set_state(vports[i],
1345 FC_VPORT_NO_FABRIC_SUPP);
1346 lpfc_printf_vlog(vport, KERN_ERR,
1347 LOG_ELS,
1348 "0259 No NPIV "
1349 "Fabric support\n");
1350 }
1351 }
1352 lpfc_destroy_vport_work_array(phba, vports);
1353 lpfc_do_scr_ns_plogi(phba, vport);
1354 }
1355
1356 lpfc_mbuf_free(phba, mp->virt, mp->phys);
1357 kfree(mp);
1358 mempool_free(pmb, phba->mbox_mem_pool);
1359 return;
1360 }
1361
1362 /*
1363 * This routine handles processing a NameServer REG_LOGIN mailbox
1364 * command upon completion. It is setup in the LPFC_MBOXQ
1365 * as the completion routine when the command is
1366 * handed off to the SLI layer.
1367 */
1368 void
1369 lpfc_mbx_cmpl_ns_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1370 {
1371 MAILBOX_t *mb = &pmb->mb;
1372 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
1373 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2;
1374 struct lpfc_vport *vport = pmb->vport;
1375
1376 if (mb->mbxStatus) {
1377 out:
1378 /* decrement the node reference count held for this
1379 * callback function.
1380 */
1381 lpfc_nlp_put(ndlp);
1382 lpfc_mbuf_free(phba, mp->virt, mp->phys);
1383 kfree(mp);
1384 mempool_free(pmb, phba->mbox_mem_pool);
1385
1386 /* If no other thread is using the ndlp, free it */
1387 lpfc_nlp_not_used(ndlp);
1388
1389 if (phba->fc_topology == TOPOLOGY_LOOP) {
1390 /*
1391 * RegLogin failed, use loop map to make discovery
1392 * list
1393 */
1394 lpfc_disc_list_loopmap(vport);
1395
1396 /* Start discovery */
1397 lpfc_disc_start(vport);
1398 return;
1399 }
1400 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
1401 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1402 "0260 Register NameServer error: 0x%x\n",
1403 mb->mbxStatus);
1404 return;
1405 }
1406
1407 pmb->context1 = NULL;
1408
1409 ndlp->nlp_rpi = mb->un.varWords[0];
1410 ndlp->nlp_type |= NLP_FABRIC;
1411 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1412
1413 if (vport->port_state < LPFC_VPORT_READY) {
1414 /* Link up discovery requires Fabric registration. */
1415 lpfc_ns_cmd(vport, SLI_CTNS_RFF_ID, 0, 0); /* Do this first! */
1416 lpfc_ns_cmd(vport, SLI_CTNS_RNN_ID, 0, 0);
1417 lpfc_ns_cmd(vport, SLI_CTNS_RSNN_NN, 0, 0);
1418 lpfc_ns_cmd(vport, SLI_CTNS_RSPN_ID, 0, 0);
1419 lpfc_ns_cmd(vport, SLI_CTNS_RFT_ID, 0, 0);
1420
1421 /* Issue SCR just before NameServer GID_FT Query */
1422 lpfc_issue_els_scr(vport, SCR_DID, 0);
1423 }
1424
1425 vport->fc_ns_retry = 0;
1426 /* Good status, issue CT Request to NameServer */
1427 if (lpfc_ns_cmd(vport, SLI_CTNS_GID_FT, 0, 0)) {
1428 /* Cannot issue NameServer Query, so finish up discovery */
1429 goto out;
1430 }
1431
1432 /* decrement the node reference count held for this
1433 * callback function.
1434 */
1435 lpfc_nlp_put(ndlp);
1436 lpfc_mbuf_free(phba, mp->virt, mp->phys);
1437 kfree(mp);
1438 mempool_free(pmb, phba->mbox_mem_pool);
1439
1440 return;
1441 }
1442
1443 static void
1444 lpfc_register_remote_port(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
1445 {
1446 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1447 struct fc_rport *rport;
1448 struct lpfc_rport_data *rdata;
1449 struct fc_rport_identifiers rport_ids;
1450 struct lpfc_hba *phba = vport->phba;
1451
1452 /* Remote port has reappeared. Re-register w/ FC transport */
1453 rport_ids.node_name = wwn_to_u64(ndlp->nlp_nodename.u.wwn);
1454 rport_ids.port_name = wwn_to_u64(ndlp->nlp_portname.u.wwn);
1455 rport_ids.port_id = ndlp->nlp_DID;
1456 rport_ids.roles = FC_RPORT_ROLE_UNKNOWN;
1457
1458 /*
1459 * We leave our node pointer in rport->dd_data when we unregister a
1460 * FCP target port. But fc_remote_port_add zeros the space to which
1461 * rport->dd_data points. So, if we're reusing a previously
1462 * registered port, drop the reference that we took the last time we
1463 * registered the port.
1464 */
1465 if (ndlp->rport && ndlp->rport->dd_data &&
1466 ((struct lpfc_rport_data *) ndlp->rport->dd_data)->pnode == ndlp) {
1467 lpfc_nlp_put(ndlp);
1468 }
1469
1470 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
1471 "rport add: did:x%x flg:x%x type x%x",
1472 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
1473
1474 ndlp->rport = rport = fc_remote_port_add(shost, 0, &rport_ids);
1475 if (!rport || !get_device(&rport->dev)) {
1476 dev_printk(KERN_WARNING, &phba->pcidev->dev,
1477 "Warning: fc_remote_port_add failed\n");
1478 return;
1479 }
1480
1481 /* initialize static port data */
1482 rport->maxframe_size = ndlp->nlp_maxframe;
1483 rport->supported_classes = ndlp->nlp_class_sup;
1484 rdata = rport->dd_data;
1485 rdata->pnode = lpfc_nlp_get(ndlp);
1486
1487 if (ndlp->nlp_type & NLP_FCP_TARGET)
1488 rport_ids.roles |= FC_RPORT_ROLE_FCP_TARGET;
1489 if (ndlp->nlp_type & NLP_FCP_INITIATOR)
1490 rport_ids.roles |= FC_RPORT_ROLE_FCP_INITIATOR;
1491
1492
1493 if (rport_ids.roles != FC_RPORT_ROLE_UNKNOWN)
1494 fc_remote_port_rolechg(rport, rport_ids.roles);
1495
1496 if ((rport->scsi_target_id != -1) &&
1497 (rport->scsi_target_id < LPFC_MAX_TARGET)) {
1498 ndlp->nlp_sid = rport->scsi_target_id;
1499 }
1500 return;
1501 }
1502
1503 static void
1504 lpfc_unregister_remote_port(struct lpfc_nodelist *ndlp)
1505 {
1506 struct fc_rport *rport = ndlp->rport;
1507
1508 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_RPORT,
1509 "rport delete: did:x%x flg:x%x type x%x",
1510 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
1511
1512 fc_remote_port_delete(rport);
1513
1514 return;
1515 }
1516
1517 static void
1518 lpfc_nlp_counters(struct lpfc_vport *vport, int state, int count)
1519 {
1520 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1521
1522 spin_lock_irq(shost->host_lock);
1523 switch (state) {
1524 case NLP_STE_UNUSED_NODE:
1525 vport->fc_unused_cnt += count;
1526 break;
1527 case NLP_STE_PLOGI_ISSUE:
1528 vport->fc_plogi_cnt += count;
1529 break;
1530 case NLP_STE_ADISC_ISSUE:
1531 vport->fc_adisc_cnt += count;
1532 break;
1533 case NLP_STE_REG_LOGIN_ISSUE:
1534 vport->fc_reglogin_cnt += count;
1535 break;
1536 case NLP_STE_PRLI_ISSUE:
1537 vport->fc_prli_cnt += count;
1538 break;
1539 case NLP_STE_UNMAPPED_NODE:
1540 vport->fc_unmap_cnt += count;
1541 break;
1542 case NLP_STE_MAPPED_NODE:
1543 vport->fc_map_cnt += count;
1544 break;
1545 case NLP_STE_NPR_NODE:
1546 vport->fc_npr_cnt += count;
1547 break;
1548 }
1549 spin_unlock_irq(shost->host_lock);
1550 }
1551
1552 static void
1553 lpfc_nlp_state_cleanup(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1554 int old_state, int new_state)
1555 {
1556 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1557
1558 if (new_state == NLP_STE_UNMAPPED_NODE) {
1559 ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
1560 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE;
1561 ndlp->nlp_type |= NLP_FC_NODE;
1562 }
1563 if (new_state == NLP_STE_MAPPED_NODE)
1564 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE;
1565 if (new_state == NLP_STE_NPR_NODE)
1566 ndlp->nlp_flag &= ~NLP_RCV_PLOGI;
1567
1568 /* Transport interface */
1569 if (ndlp->rport && (old_state == NLP_STE_MAPPED_NODE ||
1570 old_state == NLP_STE_UNMAPPED_NODE)) {
1571 vport->phba->nport_event_cnt++;
1572 lpfc_unregister_remote_port(ndlp);
1573 }
1574
1575 if (new_state == NLP_STE_MAPPED_NODE ||
1576 new_state == NLP_STE_UNMAPPED_NODE) {
1577 vport->phba->nport_event_cnt++;
1578 /*
1579 * Tell the fc transport about the port, if we haven't
1580 * already. If we have, and it's a scsi entity, be
1581 * sure to unblock any attached scsi devices
1582 */
1583 lpfc_register_remote_port(vport, ndlp);
1584 }
1585 /*
1586 * if we added to Mapped list, but the remote port
1587 * registration failed or assigned a target id outside
1588 * our presentable range - move the node to the
1589 * Unmapped List
1590 */
1591 if (new_state == NLP_STE_MAPPED_NODE &&
1592 (!ndlp->rport ||
1593 ndlp->rport->scsi_target_id == -1 ||
1594 ndlp->rport->scsi_target_id >= LPFC_MAX_TARGET)) {
1595 spin_lock_irq(shost->host_lock);
1596 ndlp->nlp_flag |= NLP_TGT_NO_SCSIID;
1597 spin_unlock_irq(shost->host_lock);
1598 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1599 }
1600 }
1601
1602 static char *
1603 lpfc_nlp_state_name(char *buffer, size_t size, int state)
1604 {
1605 static char *states[] = {
1606 [NLP_STE_UNUSED_NODE] = "UNUSED",
1607 [NLP_STE_PLOGI_ISSUE] = "PLOGI",
1608 [NLP_STE_ADISC_ISSUE] = "ADISC",
1609 [NLP_STE_REG_LOGIN_ISSUE] = "REGLOGIN",
1610 [NLP_STE_PRLI_ISSUE] = "PRLI",
1611 [NLP_STE_UNMAPPED_NODE] = "UNMAPPED",
1612 [NLP_STE_MAPPED_NODE] = "MAPPED",
1613 [NLP_STE_NPR_NODE] = "NPR",
1614 };
1615
1616 if (state < NLP_STE_MAX_STATE && states[state])
1617 strlcpy(buffer, states[state], size);
1618 else
1619 snprintf(buffer, size, "unknown (%d)", state);
1620 return buffer;
1621 }
1622
1623 void
1624 lpfc_nlp_set_state(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1625 int state)
1626 {
1627 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1628 int old_state = ndlp->nlp_state;
1629 char name1[16], name2[16];
1630
1631 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
1632 "0904 NPort state transition x%06x, %s -> %s\n",
1633 ndlp->nlp_DID,
1634 lpfc_nlp_state_name(name1, sizeof(name1), old_state),
1635 lpfc_nlp_state_name(name2, sizeof(name2), state));
1636
1637 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
1638 "node statechg did:x%x old:%d ste:%d",
1639 ndlp->nlp_DID, old_state, state);
1640
1641 if (old_state == NLP_STE_NPR_NODE &&
1642 (ndlp->nlp_flag & NLP_DELAY_TMO) != 0 &&
1643 state != NLP_STE_NPR_NODE)
1644 lpfc_cancel_retry_delay_tmo(vport, ndlp);
1645 if (old_state == NLP_STE_UNMAPPED_NODE) {
1646 ndlp->nlp_flag &= ~NLP_TGT_NO_SCSIID;
1647 ndlp->nlp_type &= ~NLP_FC_NODE;
1648 }
1649
1650 if (list_empty(&ndlp->nlp_listp)) {
1651 spin_lock_irq(shost->host_lock);
1652 list_add_tail(&ndlp->nlp_listp, &vport->fc_nodes);
1653 spin_unlock_irq(shost->host_lock);
1654 } else if (old_state)
1655 lpfc_nlp_counters(vport, old_state, -1);
1656
1657 ndlp->nlp_state = state;
1658 lpfc_nlp_counters(vport, state, 1);
1659 lpfc_nlp_state_cleanup(vport, ndlp, old_state, state);
1660 }
1661
1662 void
1663 lpfc_dequeue_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
1664 {
1665 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1666
1667 if ((ndlp->nlp_flag & NLP_DELAY_TMO) != 0)
1668 lpfc_cancel_retry_delay_tmo(vport, ndlp);
1669 if (ndlp->nlp_state && !list_empty(&ndlp->nlp_listp))
1670 lpfc_nlp_counters(vport, ndlp->nlp_state, -1);
1671 spin_lock_irq(shost->host_lock);
1672 list_del_init(&ndlp->nlp_listp);
1673 spin_unlock_irq(shost->host_lock);
1674 lpfc_nlp_state_cleanup(vport, ndlp, ndlp->nlp_state,
1675 NLP_STE_UNUSED_NODE);
1676 }
1677
1678 void
1679 lpfc_drop_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
1680 {
1681 /*
1682 * Use of lpfc_drop_node and UNUSED list: lpfc_drop_node should
1683 * be used if we wish to issue the "last" lpfc_nlp_put() to remove
1684 * the ndlp from the vport. The ndlp marked as UNUSED on the list
1685 * until ALL other outstanding threads have completed. We check
1686 * that the ndlp not already in the UNUSED state before we proceed.
1687 */
1688 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
1689 return;
1690 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNUSED_NODE);
1691 lpfc_nlp_put(ndlp);
1692 return;
1693 }
1694
1695 /*
1696 * Start / ReStart rescue timer for Discovery / RSCN handling
1697 */
1698 void
1699 lpfc_set_disctmo(struct lpfc_vport *vport)
1700 {
1701 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1702 struct lpfc_hba *phba = vport->phba;
1703 uint32_t tmo;
1704
1705 if (vport->port_state == LPFC_LOCAL_CFG_LINK) {
1706 /* For FAN, timeout should be greater then edtov */
1707 tmo = (((phba->fc_edtov + 999) / 1000) + 1);
1708 } else {
1709 /* Normal discovery timeout should be > then ELS/CT timeout
1710 * FC spec states we need 3 * ratov for CT requests
1711 */
1712 tmo = ((phba->fc_ratov * 3) + 3);
1713 }
1714
1715
1716 if (!timer_pending(&vport->fc_disctmo)) {
1717 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
1718 "set disc timer: tmo:x%x state:x%x flg:x%x",
1719 tmo, vport->port_state, vport->fc_flag);
1720 }
1721
1722 mod_timer(&vport->fc_disctmo, jiffies + HZ * tmo);
1723 spin_lock_irq(shost->host_lock);
1724 vport->fc_flag |= FC_DISC_TMO;
1725 spin_unlock_irq(shost->host_lock);
1726
1727 /* Start Discovery Timer state <hba_state> */
1728 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
1729 "0247 Start Discovery Timer state x%x "
1730 "Data: x%x x%lx x%x x%x\n",
1731 vport->port_state, tmo,
1732 (unsigned long)&vport->fc_disctmo, vport->fc_plogi_cnt,
1733 vport->fc_adisc_cnt);
1734
1735 return;
1736 }
1737
1738 /*
1739 * Cancel rescue timer for Discovery / RSCN handling
1740 */
1741 int
1742 lpfc_can_disctmo(struct lpfc_vport *vport)
1743 {
1744 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1745 unsigned long iflags;
1746
1747 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
1748 "can disc timer: state:x%x rtry:x%x flg:x%x",
1749 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
1750
1751 /* Turn off discovery timer if its running */
1752 if (vport->fc_flag & FC_DISC_TMO) {
1753 spin_lock_irqsave(shost->host_lock, iflags);
1754 vport->fc_flag &= ~FC_DISC_TMO;
1755 spin_unlock_irqrestore(shost->host_lock, iflags);
1756 del_timer_sync(&vport->fc_disctmo);
1757 spin_lock_irqsave(&vport->work_port_lock, iflags);
1758 vport->work_port_events &= ~WORKER_DISC_TMO;
1759 spin_unlock_irqrestore(&vport->work_port_lock, iflags);
1760 }
1761
1762 /* Cancel Discovery Timer state <hba_state> */
1763 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
1764 "0248 Cancel Discovery Timer state x%x "
1765 "Data: x%x x%x x%x\n",
1766 vport->port_state, vport->fc_flag,
1767 vport->fc_plogi_cnt, vport->fc_adisc_cnt);
1768 return 0;
1769 }
1770
1771 /*
1772 * Check specified ring for outstanding IOCB on the SLI queue
1773 * Return true if iocb matches the specified nport
1774 */
1775 int
1776 lpfc_check_sli_ndlp(struct lpfc_hba *phba,
1777 struct lpfc_sli_ring *pring,
1778 struct lpfc_iocbq *iocb,
1779 struct lpfc_nodelist *ndlp)
1780 {
1781 struct lpfc_sli *psli = &phba->sli;
1782 IOCB_t *icmd = &iocb->iocb;
1783 struct lpfc_vport *vport = ndlp->vport;
1784
1785 if (iocb->vport != vport)
1786 return 0;
1787
1788 if (pring->ringno == LPFC_ELS_RING) {
1789 switch (icmd->ulpCommand) {
1790 case CMD_GEN_REQUEST64_CR:
1791 if (icmd->ulpContext == (volatile ushort)ndlp->nlp_rpi)
1792 return 1;
1793 case CMD_ELS_REQUEST64_CR:
1794 if (icmd->un.elsreq64.remoteID == ndlp->nlp_DID)
1795 return 1;
1796 case CMD_XMIT_ELS_RSP64_CX:
1797 if (iocb->context1 == (uint8_t *) ndlp)
1798 return 1;
1799 }
1800 } else if (pring->ringno == psli->extra_ring) {
1801
1802 } else if (pring->ringno == psli->fcp_ring) {
1803 /* Skip match check if waiting to relogin to FCP target */
1804 if ((ndlp->nlp_type & NLP_FCP_TARGET) &&
1805 (ndlp->nlp_flag & NLP_DELAY_TMO)) {
1806 return 0;
1807 }
1808 if (icmd->ulpContext == (volatile ushort)ndlp->nlp_rpi) {
1809 return 1;
1810 }
1811 } else if (pring->ringno == psli->next_ring) {
1812
1813 }
1814 return 0;
1815 }
1816
1817 /*
1818 * Free resources / clean up outstanding I/Os
1819 * associated with nlp_rpi in the LPFC_NODELIST entry.
1820 */
1821 static int
1822 lpfc_no_rpi(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
1823 {
1824 LIST_HEAD(completions);
1825 struct lpfc_sli *psli;
1826 struct lpfc_sli_ring *pring;
1827 struct lpfc_iocbq *iocb, *next_iocb;
1828 IOCB_t *icmd;
1829 uint32_t rpi, i;
1830
1831 lpfc_fabric_abort_nport(ndlp);
1832
1833 /*
1834 * Everything that matches on txcmplq will be returned
1835 * by firmware with a no rpi error.
1836 */
1837 psli = &phba->sli;
1838 rpi = ndlp->nlp_rpi;
1839 if (rpi) {
1840 /* Now process each ring */
1841 for (i = 0; i < psli->num_rings; i++) {
1842 pring = &psli->ring[i];
1843
1844 spin_lock_irq(&phba->hbalock);
1845 list_for_each_entry_safe(iocb, next_iocb, &pring->txq,
1846 list) {
1847 /*
1848 * Check to see if iocb matches the nport we are
1849 * looking for
1850 */
1851 if ((lpfc_check_sli_ndlp(phba, pring, iocb,
1852 ndlp))) {
1853 /* It matches, so deque and call compl
1854 with an error */
1855 list_move_tail(&iocb->list,
1856 &completions);
1857 pring->txq_cnt--;
1858 }
1859 }
1860 spin_unlock_irq(&phba->hbalock);
1861 }
1862 }
1863
1864 while (!list_empty(&completions)) {
1865 iocb = list_get_first(&completions, struct lpfc_iocbq, list);
1866 list_del_init(&iocb->list);
1867
1868 if (!iocb->iocb_cmpl)
1869 lpfc_sli_release_iocbq(phba, iocb);
1870 else {
1871 icmd = &iocb->iocb;
1872 icmd->ulpStatus = IOSTAT_LOCAL_REJECT;
1873 icmd->un.ulpWord[4] = IOERR_SLI_ABORTED;
1874 (iocb->iocb_cmpl)(phba, iocb, iocb);
1875 }
1876 }
1877
1878 return 0;
1879 }
1880
1881 /*
1882 * Free rpi associated with LPFC_NODELIST entry.
1883 * This routine is called from lpfc_freenode(), when we are removing
1884 * a LPFC_NODELIST entry. It is also called if the driver initiates a
1885 * LOGO that completes successfully, and we are waiting to PLOGI back
1886 * to the remote NPort. In addition, it is called after we receive
1887 * and unsolicated ELS cmd, send back a rsp, the rsp completes and
1888 * we are waiting to PLOGI back to the remote NPort.
1889 */
1890 int
1891 lpfc_unreg_rpi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
1892 {
1893 struct lpfc_hba *phba = vport->phba;
1894 LPFC_MBOXQ_t *mbox;
1895 int rc;
1896
1897 if (ndlp->nlp_rpi) {
1898 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1899 if (mbox) {
1900 lpfc_unreg_login(phba, vport->vpi, ndlp->nlp_rpi, mbox);
1901 mbox->vport = vport;
1902 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1903 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
1904 if (rc == MBX_NOT_FINISHED)
1905 mempool_free(mbox, phba->mbox_mem_pool);
1906 }
1907 lpfc_no_rpi(phba, ndlp);
1908 ndlp->nlp_rpi = 0;
1909 return 1;
1910 }
1911 return 0;
1912 }
1913
1914 void
1915 lpfc_unreg_all_rpis(struct lpfc_vport *vport)
1916 {
1917 struct lpfc_hba *phba = vport->phba;
1918 LPFC_MBOXQ_t *mbox;
1919 int rc;
1920
1921 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1922 if (mbox) {
1923 lpfc_unreg_login(phba, vport->vpi, 0xffff, mbox);
1924 mbox->vport = vport;
1925 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1926 mbox->context1 = NULL;
1927 rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO);
1928 if (rc == MBX_NOT_FINISHED) {
1929 mempool_free(mbox, phba->mbox_mem_pool);
1930 }
1931 }
1932 }
1933
1934 void
1935 lpfc_unreg_default_rpis(struct lpfc_vport *vport)
1936 {
1937 struct lpfc_hba *phba = vport->phba;
1938 LPFC_MBOXQ_t *mbox;
1939 int rc;
1940
1941 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1942 if (mbox) {
1943 lpfc_unreg_did(phba, vport->vpi, 0xffffffff, mbox);
1944 mbox->vport = vport;
1945 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1946 mbox->context1 = NULL;
1947 rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO);
1948 if (rc == MBX_NOT_FINISHED) {
1949 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX | LOG_VPORT,
1950 "1815 Could not issue "
1951 "unreg_did (default rpis)\n");
1952 mempool_free(mbox, phba->mbox_mem_pool);
1953 }
1954 }
1955 }
1956
1957 /*
1958 * Free resources associated with LPFC_NODELIST entry
1959 * so it can be freed.
1960 */
1961 static int
1962 lpfc_cleanup_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
1963 {
1964 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1965 struct lpfc_hba *phba = vport->phba;
1966 LPFC_MBOXQ_t *mb, *nextmb;
1967 struct lpfc_dmabuf *mp;
1968
1969 /* Cleanup node for NPort <nlp_DID> */
1970 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
1971 "0900 Cleanup node for NPort x%x "
1972 "Data: x%x x%x x%x\n",
1973 ndlp->nlp_DID, ndlp->nlp_flag,
1974 ndlp->nlp_state, ndlp->nlp_rpi);
1975 lpfc_dequeue_node(vport, ndlp);
1976
1977 /* cleanup any ndlp on mbox q waiting for reglogin cmpl */
1978 if ((mb = phba->sli.mbox_active)) {
1979 if ((mb->mb.mbxCommand == MBX_REG_LOGIN64) &&
1980 (ndlp == (struct lpfc_nodelist *) mb->context2)) {
1981 mb->context2 = NULL;
1982 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1983 }
1984 }
1985
1986 spin_lock_irq(&phba->hbalock);
1987 list_for_each_entry_safe(mb, nextmb, &phba->sli.mboxq, list) {
1988 if ((mb->mb.mbxCommand == MBX_REG_LOGIN64) &&
1989 (ndlp == (struct lpfc_nodelist *) mb->context2)) {
1990 mp = (struct lpfc_dmabuf *) (mb->context1);
1991 if (mp) {
1992 __lpfc_mbuf_free(phba, mp->virt, mp->phys);
1993 kfree(mp);
1994 }
1995 list_del(&mb->list);
1996 mempool_free(mb, phba->mbox_mem_pool);
1997 lpfc_nlp_put(ndlp);
1998 }
1999 }
2000 spin_unlock_irq(&phba->hbalock);
2001
2002 lpfc_els_abort(phba,ndlp);
2003 spin_lock_irq(shost->host_lock);
2004 ndlp->nlp_flag &= ~NLP_DELAY_TMO;
2005 spin_unlock_irq(shost->host_lock);
2006
2007 ndlp->nlp_last_elscmd = 0;
2008 del_timer_sync(&ndlp->nlp_delayfunc);
2009
2010 if (!list_empty(&ndlp->els_retry_evt.evt_listp))
2011 list_del_init(&ndlp->els_retry_evt.evt_listp);
2012 if (!list_empty(&ndlp->dev_loss_evt.evt_listp))
2013 list_del_init(&ndlp->dev_loss_evt.evt_listp);
2014
2015 lpfc_unreg_rpi(vport, ndlp);
2016
2017 return 0;
2018 }
2019
2020 /*
2021 * Check to see if we can free the nlp back to the freelist.
2022 * If we are in the middle of using the nlp in the discovery state
2023 * machine, defer the free till we reach the end of the state machine.
2024 */
2025 static void
2026 lpfc_nlp_remove(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
2027 {
2028 struct lpfc_hba *phba = vport->phba;
2029 struct lpfc_rport_data *rdata;
2030 LPFC_MBOXQ_t *mbox;
2031 int rc;
2032
2033 if (ndlp->nlp_flag & NLP_DELAY_TMO) {
2034 lpfc_cancel_retry_delay_tmo(vport, ndlp);
2035 }
2036
2037 if (ndlp->nlp_flag & NLP_DEFER_RM && !ndlp->nlp_rpi) {
2038 /* For this case we need to cleanup the default rpi
2039 * allocated by the firmware.
2040 */
2041 if ((mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL))
2042 != NULL) {
2043 rc = lpfc_reg_login(phba, vport->vpi, ndlp->nlp_DID,
2044 (uint8_t *) &vport->fc_sparam, mbox, 0);
2045 if (rc) {
2046 mempool_free(mbox, phba->mbox_mem_pool);
2047 }
2048 else {
2049 mbox->mbox_flag |= LPFC_MBX_IMED_UNREG;
2050 mbox->mbox_cmpl = lpfc_mbx_cmpl_dflt_rpi;
2051 mbox->vport = vport;
2052 mbox->context2 = NULL;
2053 rc =lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
2054 if (rc == MBX_NOT_FINISHED) {
2055 mempool_free(mbox, phba->mbox_mem_pool);
2056 }
2057 }
2058 }
2059 }
2060
2061 lpfc_cleanup_node(vport, ndlp);
2062
2063 /*
2064 * We can get here with a non-NULL ndlp->rport because when we
2065 * unregister a rport we don't break the rport/node linkage. So if we
2066 * do, make sure we don't leaving any dangling pointers behind.
2067 */
2068 if (ndlp->rport) {
2069 rdata = ndlp->rport->dd_data;
2070 rdata->pnode = NULL;
2071 ndlp->rport = NULL;
2072 }
2073 }
2074
2075 static int
2076 lpfc_matchdid(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2077 uint32_t did)
2078 {
2079 D_ID mydid, ndlpdid, matchdid;
2080
2081 if (did == Bcast_DID)
2082 return 0;
2083
2084 if (ndlp->nlp_DID == 0) {
2085 return 0;
2086 }
2087
2088 /* First check for Direct match */
2089 if (ndlp->nlp_DID == did)
2090 return 1;
2091
2092 /* Next check for area/domain identically equals 0 match */
2093 mydid.un.word = vport->fc_myDID;
2094 if ((mydid.un.b.domain == 0) && (mydid.un.b.area == 0)) {
2095 return 0;
2096 }
2097
2098 matchdid.un.word = did;
2099 ndlpdid.un.word = ndlp->nlp_DID;
2100 if (matchdid.un.b.id == ndlpdid.un.b.id) {
2101 if ((mydid.un.b.domain == matchdid.un.b.domain) &&
2102 (mydid.un.b.area == matchdid.un.b.area)) {
2103 if ((ndlpdid.un.b.domain == 0) &&
2104 (ndlpdid.un.b.area == 0)) {
2105 if (ndlpdid.un.b.id)
2106 return 1;
2107 }
2108 return 0;
2109 }
2110
2111 matchdid.un.word = ndlp->nlp_DID;
2112 if ((mydid.un.b.domain == ndlpdid.un.b.domain) &&
2113 (mydid.un.b.area == ndlpdid.un.b.area)) {
2114 if ((matchdid.un.b.domain == 0) &&
2115 (matchdid.un.b.area == 0)) {
2116 if (matchdid.un.b.id)
2117 return 1;
2118 }
2119 }
2120 }
2121 return 0;
2122 }
2123
2124 /* Search for a nodelist entry */
2125 static struct lpfc_nodelist *
2126 __lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did)
2127 {
2128 struct lpfc_nodelist *ndlp;
2129 uint32_t data1;
2130
2131 list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
2132 if (lpfc_matchdid(vport, ndlp, did)) {
2133 data1 = (((uint32_t) ndlp->nlp_state << 24) |
2134 ((uint32_t) ndlp->nlp_xri << 16) |
2135 ((uint32_t) ndlp->nlp_type << 8) |
2136 ((uint32_t) ndlp->nlp_rpi & 0xff));
2137 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
2138 "0929 FIND node DID "
2139 "Data: x%p x%x x%x x%x\n",
2140 ndlp, ndlp->nlp_DID,
2141 ndlp->nlp_flag, data1);
2142 return ndlp;
2143 }
2144 }
2145
2146 /* FIND node did <did> NOT FOUND */
2147 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
2148 "0932 FIND node did x%x NOT FOUND.\n", did);
2149 return NULL;
2150 }
2151
2152 struct lpfc_nodelist *
2153 lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did)
2154 {
2155 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2156 struct lpfc_nodelist *ndlp;
2157
2158 spin_lock_irq(shost->host_lock);
2159 ndlp = __lpfc_findnode_did(vport, did);
2160 spin_unlock_irq(shost->host_lock);
2161 return ndlp;
2162 }
2163
2164 struct lpfc_nodelist *
2165 lpfc_setup_disc_node(struct lpfc_vport *vport, uint32_t did)
2166 {
2167 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2168 struct lpfc_nodelist *ndlp;
2169
2170 ndlp = lpfc_findnode_did(vport, did);
2171 if (!ndlp) {
2172 if ((vport->fc_flag & FC_RSCN_MODE) != 0 &&
2173 lpfc_rscn_payload_check(vport, did) == 0)
2174 return NULL;
2175 ndlp = (struct lpfc_nodelist *)
2176 mempool_alloc(vport->phba->nlp_mem_pool, GFP_KERNEL);
2177 if (!ndlp)
2178 return NULL;
2179 lpfc_nlp_init(vport, ndlp, did);
2180 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2181 spin_lock_irq(shost->host_lock);
2182 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
2183 spin_unlock_irq(shost->host_lock);
2184 return ndlp;
2185 }
2186 if (vport->fc_flag & FC_RSCN_MODE) {
2187 if (lpfc_rscn_payload_check(vport, did)) {
2188 /* If we've already recieved a PLOGI from this NPort
2189 * we don't need to try to discover it again.
2190 */
2191 if (ndlp->nlp_flag & NLP_RCV_PLOGI)
2192 return NULL;
2193
2194 spin_lock_irq(shost->host_lock);
2195 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
2196 spin_unlock_irq(shost->host_lock);
2197
2198 /* Since this node is marked for discovery,
2199 * delay timeout is not needed.
2200 */
2201 if (ndlp->nlp_flag & NLP_DELAY_TMO)
2202 lpfc_cancel_retry_delay_tmo(vport, ndlp);
2203 } else
2204 ndlp = NULL;
2205 } else {
2206 /* If we've already recieved a PLOGI from this NPort,
2207 * or we are already in the process of discovery on it,
2208 * we don't need to try to discover it again.
2209 */
2210 if (ndlp->nlp_state == NLP_STE_ADISC_ISSUE ||
2211 ndlp->nlp_state == NLP_STE_PLOGI_ISSUE ||
2212 ndlp->nlp_flag & NLP_RCV_PLOGI)
2213 return NULL;
2214 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2215 spin_lock_irq(shost->host_lock);
2216 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
2217 spin_unlock_irq(shost->host_lock);
2218 }
2219 return ndlp;
2220 }
2221
2222 /* Build a list of nodes to discover based on the loopmap */
2223 void
2224 lpfc_disc_list_loopmap(struct lpfc_vport *vport)
2225 {
2226 struct lpfc_hba *phba = vport->phba;
2227 int j;
2228 uint32_t alpa, index;
2229
2230 if (!lpfc_is_link_up(phba))
2231 return;
2232
2233 if (phba->fc_topology != TOPOLOGY_LOOP)
2234 return;
2235
2236 /* Check for loop map present or not */
2237 if (phba->alpa_map[0]) {
2238 for (j = 1; j <= phba->alpa_map[0]; j++) {
2239 alpa = phba->alpa_map[j];
2240 if (((vport->fc_myDID & 0xff) == alpa) || (alpa == 0))
2241 continue;
2242 lpfc_setup_disc_node(vport, alpa);
2243 }
2244 } else {
2245 /* No alpamap, so try all alpa's */
2246 for (j = 0; j < FC_MAXLOOP; j++) {
2247 /* If cfg_scan_down is set, start from highest
2248 * ALPA (0xef) to lowest (0x1).
2249 */
2250 if (vport->cfg_scan_down)
2251 index = j;
2252 else
2253 index = FC_MAXLOOP - j - 1;
2254 alpa = lpfcAlpaArray[index];
2255 if ((vport->fc_myDID & 0xff) == alpa)
2256 continue;
2257 lpfc_setup_disc_node(vport, alpa);
2258 }
2259 }
2260 return;
2261 }
2262
2263 void
2264 lpfc_issue_clear_la(struct lpfc_hba *phba, struct lpfc_vport *vport)
2265 {
2266 LPFC_MBOXQ_t *mbox;
2267 struct lpfc_sli *psli = &phba->sli;
2268 struct lpfc_sli_ring *extra_ring = &psli->ring[psli->extra_ring];
2269 struct lpfc_sli_ring *fcp_ring = &psli->ring[psli->fcp_ring];
2270 struct lpfc_sli_ring *next_ring = &psli->ring[psli->next_ring];
2271 int rc;
2272
2273 /*
2274 * if it's not a physical port or if we already send
2275 * clear_la then don't send it.
2276 */
2277 if ((phba->link_state >= LPFC_CLEAR_LA) ||
2278 (vport->port_type != LPFC_PHYSICAL_PORT))
2279 return;
2280
2281 /* Link up discovery */
2282 if ((mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL)) != NULL) {
2283 phba->link_state = LPFC_CLEAR_LA;
2284 lpfc_clear_la(phba, mbox);
2285 mbox->mbox_cmpl = lpfc_mbx_cmpl_clear_la;
2286 mbox->vport = vport;
2287 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
2288 if (rc == MBX_NOT_FINISHED) {
2289 mempool_free(mbox, phba->mbox_mem_pool);
2290 lpfc_disc_flush_list(vport);
2291 extra_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
2292 fcp_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
2293 next_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
2294 phba->link_state = LPFC_HBA_ERROR;
2295 }
2296 }
2297 }
2298
2299 /* Reg_vpi to tell firmware to resume normal operations */
2300 void
2301 lpfc_issue_reg_vpi(struct lpfc_hba *phba, struct lpfc_vport *vport)
2302 {
2303 LPFC_MBOXQ_t *regvpimbox;
2304
2305 regvpimbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2306 if (regvpimbox) {
2307 lpfc_reg_vpi(phba, vport->vpi, vport->fc_myDID, regvpimbox);
2308 regvpimbox->mbox_cmpl = lpfc_mbx_cmpl_reg_vpi;
2309 regvpimbox->vport = vport;
2310 if (lpfc_sli_issue_mbox(phba, regvpimbox, MBX_NOWAIT)
2311 == MBX_NOT_FINISHED) {
2312 mempool_free(regvpimbox, phba->mbox_mem_pool);
2313 }
2314 }
2315 }
2316
2317 /* Start Link up / RSCN discovery on NPR nodes */
2318 void
2319 lpfc_disc_start(struct lpfc_vport *vport)
2320 {
2321 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2322 struct lpfc_hba *phba = vport->phba;
2323 uint32_t num_sent;
2324 uint32_t clear_la_pending;
2325 int did_changed;
2326
2327 if (!lpfc_is_link_up(phba))
2328 return;
2329
2330 if (phba->link_state == LPFC_CLEAR_LA)
2331 clear_la_pending = 1;
2332 else
2333 clear_la_pending = 0;
2334
2335 if (vport->port_state < LPFC_VPORT_READY)
2336 vport->port_state = LPFC_DISC_AUTH;
2337
2338 lpfc_set_disctmo(vport);
2339
2340 if (vport->fc_prevDID == vport->fc_myDID)
2341 did_changed = 0;
2342 else
2343 did_changed = 1;
2344
2345 vport->fc_prevDID = vport->fc_myDID;
2346 vport->num_disc_nodes = 0;
2347
2348 /* Start Discovery state <hba_state> */
2349 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2350 "0202 Start Discovery hba state x%x "
2351 "Data: x%x x%x x%x\n",
2352 vport->port_state, vport->fc_flag, vport->fc_plogi_cnt,
2353 vport->fc_adisc_cnt);
2354
2355 /* First do ADISCs - if any */
2356 num_sent = lpfc_els_disc_adisc(vport);
2357
2358 if (num_sent)
2359 return;
2360
2361 /*
2362 * For SLI3, cmpl_reg_vpi will set port_state to READY, and
2363 * continue discovery.
2364 */
2365 if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
2366 !(vport->fc_flag & FC_RSCN_MODE)) {
2367 lpfc_issue_reg_vpi(phba, vport);
2368 return;
2369 }
2370
2371 /*
2372 * For SLI2, we need to set port_state to READY and continue
2373 * discovery.
2374 */
2375 if (vport->port_state < LPFC_VPORT_READY && !clear_la_pending) {
2376 /* If we get here, there is nothing to ADISC */
2377 if (vport->port_type == LPFC_PHYSICAL_PORT)
2378 lpfc_issue_clear_la(phba, vport);
2379
2380 if (!(vport->fc_flag & FC_ABORT_DISCOVERY)) {
2381 vport->num_disc_nodes = 0;
2382 /* go thru NPR nodes and issue ELS PLOGIs */
2383 if (vport->fc_npr_cnt)
2384 lpfc_els_disc_plogi(vport);
2385
2386 if (!vport->num_disc_nodes) {
2387 spin_lock_irq(shost->host_lock);
2388 vport->fc_flag &= ~FC_NDISC_ACTIVE;
2389 spin_unlock_irq(shost->host_lock);
2390 lpfc_can_disctmo(vport);
2391 }
2392 }
2393 vport->port_state = LPFC_VPORT_READY;
2394 } else {
2395 /* Next do PLOGIs - if any */
2396 num_sent = lpfc_els_disc_plogi(vport);
2397
2398 if (num_sent)
2399 return;
2400
2401 if (vport->fc_flag & FC_RSCN_MODE) {
2402 /* Check to see if more RSCNs came in while we
2403 * were processing this one.
2404 */
2405 if ((vport->fc_rscn_id_cnt == 0) &&
2406 (!(vport->fc_flag & FC_RSCN_DISCOVERY))) {
2407 spin_lock_irq(shost->host_lock);
2408 vport->fc_flag &= ~FC_RSCN_MODE;
2409 spin_unlock_irq(shost->host_lock);
2410 lpfc_can_disctmo(vport);
2411 } else
2412 lpfc_els_handle_rscn(vport);
2413 }
2414 }
2415 return;
2416 }
2417
2418 /*
2419 * Ignore completion for all IOCBs on tx and txcmpl queue for ELS
2420 * ring the match the sppecified nodelist.
2421 */
2422 static void
2423 lpfc_free_tx(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
2424 {
2425 LIST_HEAD(completions);
2426 struct lpfc_sli *psli;
2427 IOCB_t *icmd;
2428 struct lpfc_iocbq *iocb, *next_iocb;
2429 struct lpfc_sli_ring *pring;
2430
2431 psli = &phba->sli;
2432 pring = &psli->ring[LPFC_ELS_RING];
2433
2434 /* Error matching iocb on txq or txcmplq
2435 * First check the txq.
2436 */
2437 spin_lock_irq(&phba->hbalock);
2438 list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
2439 if (iocb->context1 != ndlp) {
2440 continue;
2441 }
2442 icmd = &iocb->iocb;
2443 if ((icmd->ulpCommand == CMD_ELS_REQUEST64_CR) ||
2444 (icmd->ulpCommand == CMD_XMIT_ELS_RSP64_CX)) {
2445
2446 list_move_tail(&iocb->list, &completions);
2447 pring->txq_cnt--;
2448 }
2449 }
2450
2451 /* Next check the txcmplq */
2452 list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) {
2453 if (iocb->context1 != ndlp) {
2454 continue;
2455 }
2456 icmd = &iocb->iocb;
2457 if (icmd->ulpCommand == CMD_ELS_REQUEST64_CR ||
2458 icmd->ulpCommand == CMD_XMIT_ELS_RSP64_CX) {
2459 lpfc_sli_issue_abort_iotag(phba, pring, iocb);
2460 }
2461 }
2462 spin_unlock_irq(&phba->hbalock);
2463
2464 while (!list_empty(&completions)) {
2465 iocb = list_get_first(&completions, struct lpfc_iocbq, list);
2466 list_del_init(&iocb->list);
2467
2468 if (!iocb->iocb_cmpl)
2469 lpfc_sli_release_iocbq(phba, iocb);
2470 else {
2471 icmd = &iocb->iocb;
2472 icmd->ulpStatus = IOSTAT_LOCAL_REJECT;
2473 icmd->un.ulpWord[4] = IOERR_SLI_ABORTED;
2474 (iocb->iocb_cmpl) (phba, iocb, iocb);
2475 }
2476 }
2477 }
2478
2479 static void
2480 lpfc_disc_flush_list(struct lpfc_vport *vport)
2481 {
2482 struct lpfc_nodelist *ndlp, *next_ndlp;
2483 struct lpfc_hba *phba = vport->phba;
2484
2485 if (vport->fc_plogi_cnt || vport->fc_adisc_cnt) {
2486 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes,
2487 nlp_listp) {
2488 if (ndlp->nlp_state == NLP_STE_PLOGI_ISSUE ||
2489 ndlp->nlp_state == NLP_STE_ADISC_ISSUE) {
2490 lpfc_free_tx(phba, ndlp);
2491 }
2492 }
2493 }
2494 }
2495
2496 void
2497 lpfc_cleanup_discovery_resources(struct lpfc_vport *vport)
2498 {
2499 lpfc_els_flush_rscn(vport);
2500 lpfc_els_flush_cmd(vport);
2501 lpfc_disc_flush_list(vport);
2502 }
2503
2504 /*****************************************************************************/
2505 /*
2506 * NAME: lpfc_disc_timeout
2507 *
2508 * FUNCTION: Fibre Channel driver discovery timeout routine.
2509 *
2510 * EXECUTION ENVIRONMENT: interrupt only
2511 *
2512 * CALLED FROM:
2513 * Timer function
2514 *
2515 * RETURNS:
2516 * none
2517 */
2518 /*****************************************************************************/
2519 void
2520 lpfc_disc_timeout(unsigned long ptr)
2521 {
2522 struct lpfc_vport *vport = (struct lpfc_vport *) ptr;
2523 struct lpfc_hba *phba = vport->phba;
2524 unsigned long flags = 0;
2525
2526 if (unlikely(!phba))
2527 return;
2528
2529 if ((vport->work_port_events & WORKER_DISC_TMO) == 0) {
2530 spin_lock_irqsave(&vport->work_port_lock, flags);
2531 vport->work_port_events |= WORKER_DISC_TMO;
2532 spin_unlock_irqrestore(&vport->work_port_lock, flags);
2533
2534 spin_lock_irqsave(&phba->hbalock, flags);
2535 if (phba->work_wait)
2536 lpfc_worker_wake_up(phba);
2537 spin_unlock_irqrestore(&phba->hbalock, flags);
2538 }
2539 return;
2540 }
2541
2542 static void
2543 lpfc_disc_timeout_handler(struct lpfc_vport *vport)
2544 {
2545 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2546 struct lpfc_hba *phba = vport->phba;
2547 struct lpfc_sli *psli = &phba->sli;
2548 struct lpfc_nodelist *ndlp, *next_ndlp;
2549 LPFC_MBOXQ_t *initlinkmbox;
2550 int rc, clrlaerr = 0;
2551
2552 if (!(vport->fc_flag & FC_DISC_TMO))
2553 return;
2554
2555 spin_lock_irq(shost->host_lock);
2556 vport->fc_flag &= ~FC_DISC_TMO;
2557 spin_unlock_irq(shost->host_lock);
2558
2559 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
2560 "disc timeout: state:x%x rtry:x%x flg:x%x",
2561 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
2562
2563 switch (vport->port_state) {
2564
2565 case LPFC_LOCAL_CFG_LINK:
2566 /* port_state is identically LPFC_LOCAL_CFG_LINK while waiting for
2567 * FAN
2568 */
2569 /* FAN timeout */
2570 lpfc_printf_vlog(vport, KERN_WARNING, LOG_DISCOVERY,
2571 "0221 FAN timeout\n");
2572 /* Start discovery by sending FLOGI, clean up old rpis */
2573 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes,
2574 nlp_listp) {
2575 if (ndlp->nlp_state != NLP_STE_NPR_NODE)
2576 continue;
2577 if (ndlp->nlp_type & NLP_FABRIC) {
2578 /* Clean up the ndlp on Fabric connections */
2579 lpfc_drop_node(vport, ndlp);
2580
2581 } else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) {
2582 /* Fail outstanding IO now since device
2583 * is marked for PLOGI.
2584 */
2585 lpfc_unreg_rpi(vport, ndlp);
2586 }
2587 }
2588 if (vport->port_state != LPFC_FLOGI) {
2589 lpfc_initial_flogi(vport);
2590 return;
2591 }
2592 break;
2593
2594 case LPFC_FDISC:
2595 case LPFC_FLOGI:
2596 /* port_state is identically LPFC_FLOGI while waiting for FLOGI cmpl */
2597 /* Initial FLOGI timeout */
2598 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2599 "0222 Initial %s timeout\n",
2600 vport->vpi ? "FDISC" : "FLOGI");
2601
2602 /* Assume no Fabric and go on with discovery.
2603 * Check for outstanding ELS FLOGI to abort.
2604 */
2605
2606 /* FLOGI failed, so just use loop map to make discovery list */
2607 lpfc_disc_list_loopmap(vport);
2608
2609 /* Start discovery */
2610 lpfc_disc_start(vport);
2611 break;
2612
2613 case LPFC_FABRIC_CFG_LINK:
2614 /* hba_state is identically LPFC_FABRIC_CFG_LINK while waiting for
2615 NameServer login */
2616 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2617 "0223 Timeout while waiting for "
2618 "NameServer login\n");
2619 /* Next look for NameServer ndlp */
2620 ndlp = lpfc_findnode_did(vport, NameServer_DID);
2621 if (ndlp)
2622 lpfc_els_abort(phba, ndlp);
2623
2624 /* ReStart discovery */
2625 goto restart_disc;
2626
2627 case LPFC_NS_QRY:
2628 /* Check for wait for NameServer Rsp timeout */
2629 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2630 "0224 NameServer Query timeout "
2631 "Data: x%x x%x\n",
2632 vport->fc_ns_retry, LPFC_MAX_NS_RETRY);
2633
2634 if (vport->fc_ns_retry < LPFC_MAX_NS_RETRY) {
2635 /* Try it one more time */
2636 vport->fc_ns_retry++;
2637 rc = lpfc_ns_cmd(vport, SLI_CTNS_GID_FT,
2638 vport->fc_ns_retry, 0);
2639 if (rc == 0)
2640 break;
2641 }
2642 vport->fc_ns_retry = 0;
2643
2644 restart_disc:
2645 /*
2646 * Discovery is over.
2647 * set port_state to PORT_READY if SLI2.
2648 * cmpl_reg_vpi will set port_state to READY for SLI3.
2649 */
2650 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
2651 lpfc_issue_reg_vpi(phba, vport);
2652 else { /* NPIV Not enabled */
2653 lpfc_issue_clear_la(phba, vport);
2654 vport->port_state = LPFC_VPORT_READY;
2655 }
2656
2657 /* Setup and issue mailbox INITIALIZE LINK command */
2658 initlinkmbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2659 if (!initlinkmbox) {
2660 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2661 "0206 Device Discovery "
2662 "completion error\n");
2663 phba->link_state = LPFC_HBA_ERROR;
2664 break;
2665 }
2666
2667 lpfc_linkdown(phba);
2668 lpfc_init_link(phba, initlinkmbox, phba->cfg_topology,
2669 phba->cfg_link_speed);
2670 initlinkmbox->mb.un.varInitLnk.lipsr_AL_PA = 0;
2671 initlinkmbox->vport = vport;
2672 initlinkmbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
2673 rc = lpfc_sli_issue_mbox(phba, initlinkmbox, MBX_NOWAIT);
2674 lpfc_set_loopback_flag(phba);
2675 if (rc == MBX_NOT_FINISHED)
2676 mempool_free(initlinkmbox, phba->mbox_mem_pool);
2677
2678 break;
2679
2680 case LPFC_DISC_AUTH:
2681 /* Node Authentication timeout */
2682 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2683 "0227 Node Authentication timeout\n");
2684 lpfc_disc_flush_list(vport);
2685
2686 /*
2687 * set port_state to PORT_READY if SLI2.
2688 * cmpl_reg_vpi will set port_state to READY for SLI3.
2689 */
2690 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
2691 lpfc_issue_reg_vpi(phba, vport);
2692 else { /* NPIV Not enabled */
2693 lpfc_issue_clear_la(phba, vport);
2694 vport->port_state = LPFC_VPORT_READY;
2695 }
2696 break;
2697
2698 case LPFC_VPORT_READY:
2699 if (vport->fc_flag & FC_RSCN_MODE) {
2700 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2701 "0231 RSCN timeout Data: x%x "
2702 "x%x\n",
2703 vport->fc_ns_retry, LPFC_MAX_NS_RETRY);
2704
2705 /* Cleanup any outstanding ELS commands */
2706 lpfc_els_flush_cmd(vport);
2707
2708 lpfc_els_flush_rscn(vport);
2709 lpfc_disc_flush_list(vport);
2710 }
2711 break;
2712
2713 default:
2714 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2715 "0229 Unexpected discovery timeout, "
2716 "vport State x%x\n", vport->port_state);
2717 break;
2718 }
2719
2720 switch (phba->link_state) {
2721 case LPFC_CLEAR_LA:
2722 /* CLEAR LA timeout */
2723 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2724 "0228 CLEAR LA timeout\n");
2725 clrlaerr = 1;
2726 break;
2727
2728 case LPFC_LINK_UP:
2729 lpfc_issue_clear_la(phba, vport);
2730 /* Drop thru */
2731 case LPFC_LINK_UNKNOWN:
2732 case LPFC_WARM_START:
2733 case LPFC_INIT_START:
2734 case LPFC_INIT_MBX_CMDS:
2735 case LPFC_LINK_DOWN:
2736 case LPFC_HBA_ERROR:
2737 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2738 "0230 Unexpected timeout, hba link "
2739 "state x%x\n", phba->link_state);
2740 clrlaerr = 1;
2741 break;
2742
2743 case LPFC_HBA_READY:
2744 break;
2745 }
2746
2747 if (clrlaerr) {
2748 lpfc_disc_flush_list(vport);
2749 psli->ring[(psli->extra_ring)].flag &= ~LPFC_STOP_IOCB_EVENT;
2750 psli->ring[(psli->fcp_ring)].flag &= ~LPFC_STOP_IOCB_EVENT;
2751 psli->ring[(psli->next_ring)].flag &= ~LPFC_STOP_IOCB_EVENT;
2752 vport->port_state = LPFC_VPORT_READY;
2753 }
2754
2755 return;
2756 }
2757
2758 /*
2759 * This routine handles processing a NameServer REG_LOGIN mailbox
2760 * command upon completion. It is setup in the LPFC_MBOXQ
2761 * as the completion routine when the command is
2762 * handed off to the SLI layer.
2763 */
2764 void
2765 lpfc_mbx_cmpl_fdmi_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
2766 {
2767 MAILBOX_t *mb = &pmb->mb;
2768 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
2769 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2;
2770 struct lpfc_vport *vport = pmb->vport;
2771
2772 pmb->context1 = NULL;
2773
2774 ndlp->nlp_rpi = mb->un.varWords[0];
2775 ndlp->nlp_type |= NLP_FABRIC;
2776 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
2777
2778 /*
2779 * Start issuing Fabric-Device Management Interface (FDMI) command to
2780 * 0xfffffa (FDMI well known port) or Delay issuing FDMI command if
2781 * fdmi-on=2 (supporting RPA/hostnmae)
2782 */
2783
2784 if (vport->cfg_fdmi_on == 1)
2785 lpfc_fdmi_cmd(vport, ndlp, SLI_MGMT_DHBA);
2786 else
2787 mod_timer(&vport->fc_fdmitmo, jiffies + HZ * 60);
2788
2789 /* decrement the node reference count held for this callback
2790 * function.
2791 */
2792 lpfc_nlp_put(ndlp);
2793 lpfc_mbuf_free(phba, mp->virt, mp->phys);
2794 kfree(mp);
2795 mempool_free(pmb, phba->mbox_mem_pool);
2796
2797 return;
2798 }
2799
2800 static int
2801 lpfc_filter_by_rpi(struct lpfc_nodelist *ndlp, void *param)
2802 {
2803 uint16_t *rpi = param;
2804
2805 return ndlp->nlp_rpi == *rpi;
2806 }
2807
2808 static int
2809 lpfc_filter_by_wwpn(struct lpfc_nodelist *ndlp, void *param)
2810 {
2811 return memcmp(&ndlp->nlp_portname, param,
2812 sizeof(ndlp->nlp_portname)) == 0;
2813 }
2814
2815 static struct lpfc_nodelist *
2816 __lpfc_find_node(struct lpfc_vport *vport, node_filter filter, void *param)
2817 {
2818 struct lpfc_nodelist *ndlp;
2819
2820 list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
2821 if (filter(ndlp, param))
2822 return ndlp;
2823 }
2824 return NULL;
2825 }
2826
2827 #if 0
2828 /*
2829 * Search node lists for a remote port matching filter criteria
2830 * Caller needs to hold host_lock before calling this routine.
2831 */
2832 struct lpfc_nodelist *
2833 lpfc_find_node(struct lpfc_vport *vport, node_filter filter, void *param)
2834 {
2835 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2836 struct lpfc_nodelist *ndlp;
2837
2838 spin_lock_irq(shost->host_lock);
2839 ndlp = __lpfc_find_node(vport, filter, param);
2840 spin_unlock_irq(shost->host_lock);
2841 return ndlp;
2842 }
2843 #endif /* 0 */
2844
2845 /*
2846 * This routine looks up the ndlp lists for the given RPI. If rpi found it
2847 * returns the node list element pointer else return NULL.
2848 */
2849 struct lpfc_nodelist *
2850 __lpfc_findnode_rpi(struct lpfc_vport *vport, uint16_t rpi)
2851 {
2852 return __lpfc_find_node(vport, lpfc_filter_by_rpi, &rpi);
2853 }
2854
2855 #if 0
2856 struct lpfc_nodelist *
2857 lpfc_findnode_rpi(struct lpfc_vport *vport, uint16_t rpi)
2858 {
2859 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2860 struct lpfc_nodelist *ndlp;
2861
2862 spin_lock_irq(shost->host_lock);
2863 ndlp = __lpfc_findnode_rpi(vport, rpi);
2864 spin_unlock_irq(shost->host_lock);
2865 return ndlp;
2866 }
2867 #endif /* 0 */
2868
2869 /*
2870 * This routine looks up the ndlp lists for the given WWPN. If WWPN found it
2871 * returns the node element list pointer else return NULL.
2872 */
2873 struct lpfc_nodelist *
2874 lpfc_findnode_wwpn(struct lpfc_vport *vport, struct lpfc_name *wwpn)
2875 {
2876 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2877 struct lpfc_nodelist *ndlp;
2878
2879 spin_lock_irq(shost->host_lock);
2880 ndlp = __lpfc_find_node(vport, lpfc_filter_by_wwpn, wwpn);
2881 spin_unlock_irq(shost->host_lock);
2882 return ndlp;
2883 }
2884
2885 void
2886 lpfc_nlp_init(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2887 uint32_t did)
2888 {
2889 memset(ndlp, 0, sizeof (struct lpfc_nodelist));
2890 INIT_LIST_HEAD(&ndlp->els_retry_evt.evt_listp);
2891 INIT_LIST_HEAD(&ndlp->dev_loss_evt.evt_listp);
2892 init_timer(&ndlp->nlp_delayfunc);
2893 ndlp->nlp_delayfunc.function = lpfc_els_retry_delay;
2894 ndlp->nlp_delayfunc.data = (unsigned long)ndlp;
2895 ndlp->nlp_DID = did;
2896 ndlp->vport = vport;
2897 ndlp->nlp_sid = NLP_NO_SID;
2898 INIT_LIST_HEAD(&ndlp->nlp_listp);
2899 kref_init(&ndlp->kref);
2900
2901 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
2902 "node init: did:x%x",
2903 ndlp->nlp_DID, 0, 0);
2904
2905 return;
2906 }
2907
2908 /* This routine releases all resources associated with a specifc NPort's ndlp
2909 * and mempool_free's the nodelist.
2910 */
2911 static void
2912 lpfc_nlp_release(struct kref *kref)
2913 {
2914 struct lpfc_nodelist *ndlp = container_of(kref, struct lpfc_nodelist,
2915 kref);
2916
2917 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
2918 "node release: did:x%x flg:x%x type:x%x",
2919 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
2920
2921 lpfc_nlp_remove(ndlp->vport, ndlp);
2922 mempool_free(ndlp, ndlp->vport->phba->nlp_mem_pool);
2923 }
2924
2925 /* This routine bumps the reference count for a ndlp structure to ensure
2926 * that one discovery thread won't free a ndlp while another discovery thread
2927 * is using it.
2928 */
2929 struct lpfc_nodelist *
2930 lpfc_nlp_get(struct lpfc_nodelist *ndlp)
2931 {
2932 if (ndlp) {
2933 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
2934 "node get: did:x%x flg:x%x refcnt:x%x",
2935 ndlp->nlp_DID, ndlp->nlp_flag,
2936 atomic_read(&ndlp->kref.refcount));
2937 kref_get(&ndlp->kref);
2938 }
2939 return ndlp;
2940 }
2941
2942
2943 /* This routine decrements the reference count for a ndlp structure. If the
2944 * count goes to 0, this indicates the the associated nodelist should be freed.
2945 */
2946 int
2947 lpfc_nlp_put(struct lpfc_nodelist *ndlp)
2948 {
2949 if (ndlp) {
2950 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
2951 "node put: did:x%x flg:x%x refcnt:x%x",
2952 ndlp->nlp_DID, ndlp->nlp_flag,
2953 atomic_read(&ndlp->kref.refcount));
2954 }
2955 return ndlp ? kref_put(&ndlp->kref, lpfc_nlp_release) : 0;
2956 }
2957
2958 /* This routine free's the specified nodelist if it is not in use
2959 * by any other discovery thread. This routine returns 1 if the ndlp
2960 * is not being used by anyone and has been freed. A return value of
2961 * 0 indicates it is being used by another discovery thread and the
2962 * refcount is left unchanged.
2963 */
2964 int
2965 lpfc_nlp_not_used(struct lpfc_nodelist *ndlp)
2966 {
2967 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
2968 "node not used: did:x%x flg:x%x refcnt:x%x",
2969 ndlp->nlp_DID, ndlp->nlp_flag,
2970 atomic_read(&ndlp->kref.refcount));
2971
2972 if (atomic_read(&ndlp->kref.refcount) == 1) {
2973 lpfc_nlp_put(ndlp);
2974 return 1;
2975 }
2976 return 0;
2977 }
2978
WRT350N Kernel Patches