projects / deliverable / linux.git / blob
? search:
summary | shortlog | log | commit | commitdiff | tree
blame | history | raw | HEAD
[SCSI] lpfc 8.2.8 : Miscellaneous Bug Fixes
[deliverable/linux.git] / drivers / scsi / lpfc / lpfc_hbadisc.c
1 /*******************************************************************
2 * This file is part of the Emulex Linux Device Driver for *
3 * Fibre Channel Host Bus Adapters. *
4 * Copyright (C) 2004-2008 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 || !NLP_CHK_NODE_ACT(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 /*
94 * This function will be called when dev_loss_tmo fire.
95 */
96 void
97 lpfc_dev_loss_tmo_callbk(struct fc_rport *rport)
98 {
99 struct lpfc_rport_data *rdata;
100 struct lpfc_nodelist * ndlp;
101 struct lpfc_vport *vport;
102 struct lpfc_hba *phba;
103 struct lpfc_work_evt *evtp;
104 int put_node;
105 int put_rport;
106
107 rdata = rport->dd_data;
108 ndlp = rdata->pnode;
109 if (!ndlp || !NLP_CHK_NODE_ACT(ndlp))
110 return;
111
112 vport = ndlp->vport;
113 phba = vport->phba;
114
115 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
116 "rport devlosscb: sid:x%x did:x%x flg:x%x",
117 ndlp->nlp_sid, ndlp->nlp_DID, ndlp->nlp_flag);
118
119 /* Don't defer this if we are in the process of deleting the vport
120 * or unloading the driver. The unload will cleanup the node
121 * appropriately we just need to cleanup the ndlp rport info here.
122 */
123 if (vport->load_flag & FC_UNLOADING) {
124 put_node = rdata->pnode != NULL;
125 put_rport = ndlp->rport != NULL;
126 rdata->pnode = NULL;
127 ndlp->rport = NULL;
128 if (put_node)
129 lpfc_nlp_put(ndlp);
130 if (put_rport)
131 put_device(&rport->dev);
132 return;
133 }
134
135 if (ndlp->nlp_state == NLP_STE_MAPPED_NODE)
136 return;
137
138 evtp = &ndlp->dev_loss_evt;
139
140 if (!list_empty(&evtp->evt_listp))
141 return;
142
143 spin_lock_irq(&phba->hbalock);
144 /* We need to hold the node by incrementing the reference
145 * count until this queued work is done
146 */
147 evtp->evt_arg1 = lpfc_nlp_get(ndlp);
148 if (evtp->evt_arg1) {
149 evtp->evt = LPFC_EVT_DEV_LOSS;
150 list_add_tail(&evtp->evt_listp, &phba->work_list);
151 lpfc_worker_wake_up(phba);
152 }
153 spin_unlock_irq(&phba->hbalock);
154
155 return;
156 }
157
158 /*
159 * This function is called from the worker thread when dev_loss_tmo
160 * expire.
161 */
162 static void
163 lpfc_dev_loss_tmo_handler(struct lpfc_nodelist *ndlp)
164 {
165 struct lpfc_rport_data *rdata;
166 struct fc_rport *rport;
167 struct lpfc_vport *vport;
168 struct lpfc_hba *phba;
169 uint8_t *name;
170 int put_node;
171 int put_rport;
172 int warn_on = 0;
173
174 rport = ndlp->rport;
175
176 if (!rport)
177 return;
178
179 rdata = rport->dd_data;
180 name = (uint8_t *) &ndlp->nlp_portname;
181 vport = ndlp->vport;
182 phba = vport->phba;
183
184 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
185 "rport devlosstmo:did:x%x type:x%x id:x%x",
186 ndlp->nlp_DID, ndlp->nlp_type, rport->scsi_target_id);
187
188 /* Don't defer this if we are in the process of deleting the vport
189 * or unloading the driver. The unload will cleanup the node
190 * appropriately we just need to cleanup the ndlp rport info here.
191 */
192 if (vport->load_flag & FC_UNLOADING) {
193 if (ndlp->nlp_sid != NLP_NO_SID) {
194 /* flush the target */
195 lpfc_sli_abort_iocb(vport,
196 &phba->sli.ring[phba->sli.fcp_ring],
197 ndlp->nlp_sid, 0, LPFC_CTX_TGT);
198 }
199 put_node = rdata->pnode != NULL;
200 put_rport = ndlp->rport != NULL;
201 rdata->pnode = NULL;
202 ndlp->rport = NULL;
203 if (put_node)
204 lpfc_nlp_put(ndlp);
205 if (put_rport)
206 put_device(&rport->dev);
207 return;
208 }
209
210 if (ndlp->nlp_state == NLP_STE_MAPPED_NODE) {
211 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
212 "0284 Devloss timeout Ignored on "
213 "WWPN %x:%x:%x:%x:%x:%x:%x:%x "
214 "NPort x%x\n",
215 *name, *(name+1), *(name+2), *(name+3),
216 *(name+4), *(name+5), *(name+6), *(name+7),
217 ndlp->nlp_DID);
218 return;
219 }
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 %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x "
247 "NPort x%06x 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 %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x "
256 "NPort x%06x 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 static void
280 lpfc_work_list_done(struct lpfc_hba *phba)
281 {
282 struct lpfc_work_evt *evtp = NULL;
283 struct lpfc_nodelist *ndlp;
284 int free_evt;
285
286 spin_lock_irq(&phba->hbalock);
287 while (!list_empty(&phba->work_list)) {
288 list_remove_head((&phba->work_list), evtp, typeof(*evtp),
289 evt_listp);
290 spin_unlock_irq(&phba->hbalock);
291 free_evt = 1;
292 switch (evtp->evt) {
293 case LPFC_EVT_ELS_RETRY:
294 ndlp = (struct lpfc_nodelist *) (evtp->evt_arg1);
295 lpfc_els_retry_delay_handler(ndlp);
296 free_evt = 0; /* evt is part of ndlp */
297 /* decrement the node reference count held
298 * for this queued work
299 */
300 lpfc_nlp_put(ndlp);
301 break;
302 case LPFC_EVT_DEV_LOSS:
303 ndlp = (struct lpfc_nodelist *)(evtp->evt_arg1);
304 lpfc_dev_loss_tmo_handler(ndlp);
305 free_evt = 0;
306 /* decrement the node reference count held for
307 * this queued work
308 */
309 lpfc_nlp_put(ndlp);
310 break;
311 case LPFC_EVT_ONLINE:
312 if (phba->link_state < LPFC_LINK_DOWN)
313 *(int *) (evtp->evt_arg1) = lpfc_online(phba);
314 else
315 *(int *) (evtp->evt_arg1) = 0;
316 complete((struct completion *)(evtp->evt_arg2));
317 break;
318 case LPFC_EVT_OFFLINE_PREP:
319 if (phba->link_state >= LPFC_LINK_DOWN)
320 lpfc_offline_prep(phba);
321 *(int *)(evtp->evt_arg1) = 0;
322 complete((struct completion *)(evtp->evt_arg2));
323 break;
324 case LPFC_EVT_OFFLINE:
325 lpfc_offline(phba);
326 lpfc_sli_brdrestart(phba);
327 *(int *)(evtp->evt_arg1) =
328 lpfc_sli_brdready(phba, HS_FFRDY | HS_MBRDY);
329 lpfc_unblock_mgmt_io(phba);
330 complete((struct completion *)(evtp->evt_arg2));
331 break;
332 case LPFC_EVT_WARM_START:
333 lpfc_offline(phba);
334 lpfc_reset_barrier(phba);
335 lpfc_sli_brdreset(phba);
336 lpfc_hba_down_post(phba);
337 *(int *)(evtp->evt_arg1) =
338 lpfc_sli_brdready(phba, HS_MBRDY);
339 lpfc_unblock_mgmt_io(phba);
340 complete((struct completion *)(evtp->evt_arg2));
341 break;
342 case LPFC_EVT_KILL:
343 lpfc_offline(phba);
344 *(int *)(evtp->evt_arg1)
345 = (phba->pport->stopped)
346 ? 0 : lpfc_sli_brdkill(phba);
347 lpfc_unblock_mgmt_io(phba);
348 complete((struct completion *)(evtp->evt_arg2));
349 break;
350 }
351 if (free_evt)
352 kfree(evtp);
353 spin_lock_irq(&phba->hbalock);
354 }
355 spin_unlock_irq(&phba->hbalock);
356
357 }
358
359 static void
360 lpfc_work_done(struct lpfc_hba *phba)
361 {
362 struct lpfc_sli_ring *pring;
363 uint32_t ha_copy, status, control, work_port_events;
364 struct lpfc_vport **vports;
365 struct lpfc_vport *vport;
366 int i;
367
368 spin_lock_irq(&phba->hbalock);
369 ha_copy = phba->work_ha;
370 phba->work_ha = 0;
371 spin_unlock_irq(&phba->hbalock);
372
373 if (ha_copy & HA_ERATT)
374 lpfc_handle_eratt(phba);
375
376 if (ha_copy & HA_MBATT)
377 lpfc_sli_handle_mb_event(phba);
378
379 if (ha_copy & HA_LATT)
380 lpfc_handle_latt(phba);
381 vports = lpfc_create_vport_work_array(phba);
382 if (vports != NULL)
383 for(i = 0; i <= phba->max_vpi; i++) {
384 /*
385 * We could have no vports in array if unloading, so if
386 * this happens then just use the pport
387 */
388 if (vports[i] == NULL && i == 0)
389 vport = phba->pport;
390 else
391 vport = vports[i];
392 if (vport == NULL)
393 break;
394 spin_lock_irq(&vport->work_port_lock);
395 work_port_events = vport->work_port_events;
396 vport->work_port_events &= ~work_port_events;
397 spin_unlock_irq(&vport->work_port_lock);
398 if (work_port_events & WORKER_DISC_TMO)
399 lpfc_disc_timeout_handler(vport);
400 if (work_port_events & WORKER_ELS_TMO)
401 lpfc_els_timeout_handler(vport);
402 if (work_port_events & WORKER_HB_TMO)
403 lpfc_hb_timeout_handler(phba);
404 if (work_port_events & WORKER_MBOX_TMO)
405 lpfc_mbox_timeout_handler(phba);
406 if (work_port_events & WORKER_FABRIC_BLOCK_TMO)
407 lpfc_unblock_fabric_iocbs(phba);
408 if (work_port_events & WORKER_FDMI_TMO)
409 lpfc_fdmi_timeout_handler(vport);
410 if (work_port_events & WORKER_RAMP_DOWN_QUEUE)
411 lpfc_ramp_down_queue_handler(phba);
412 if (work_port_events & WORKER_RAMP_UP_QUEUE)
413 lpfc_ramp_up_queue_handler(phba);
414 }
415 lpfc_destroy_vport_work_array(phba, vports);
416
417 pring = &phba->sli.ring[LPFC_ELS_RING];
418 status = (ha_copy & (HA_RXMASK << (4*LPFC_ELS_RING)));
419 status >>= (4*LPFC_ELS_RING);
420 if ((status & HA_RXMASK)
421 || (pring->flag & LPFC_DEFERRED_RING_EVENT)) {
422 if (pring->flag & LPFC_STOP_IOCB_EVENT) {
423 pring->flag |= LPFC_DEFERRED_RING_EVENT;
424 /* Set the lpfc data pending flag */
425 set_bit(LPFC_DATA_READY, &phba->data_flags);
426 } else {
427 pring->flag &= ~LPFC_DEFERRED_RING_EVENT;
428 lpfc_sli_handle_slow_ring_event(phba, pring,
429 (status &
430 HA_RXMASK));
431 }
432 /*
433 * Turn on Ring interrupts
434 */
435 spin_lock_irq(&phba->hbalock);
436 control = readl(phba->HCregaddr);
437 if (!(control & (HC_R0INT_ENA << LPFC_ELS_RING))) {
438 lpfc_debugfs_slow_ring_trc(phba,
439 "WRK Enable ring: cntl:x%x hacopy:x%x",
440 control, ha_copy, 0);
441
442 control |= (HC_R0INT_ENA << LPFC_ELS_RING);
443 writel(control, phba->HCregaddr);
444 readl(phba->HCregaddr); /* flush */
445 }
446 else {
447 lpfc_debugfs_slow_ring_trc(phba,
448 "WRK Ring ok: cntl:x%x hacopy:x%x",
449 control, ha_copy, 0);
450 }
451 spin_unlock_irq(&phba->hbalock);
452 }
453 lpfc_work_list_done(phba);
454 }
455
456 int
457 lpfc_do_work(void *p)
458 {
459 struct lpfc_hba *phba = p;
460 int rc;
461
462 set_user_nice(current, -20);
463 phba->data_flags = 0;
464
465 while (1) {
466 /* wait and check worker queue activities */
467 rc = wait_event_interruptible(phba->work_waitq,
468 (test_and_clear_bit(LPFC_DATA_READY,
469 &phba->data_flags)
470 || kthread_should_stop()));
471 BUG_ON(rc);
472
473 if (kthread_should_stop())
474 break;
475
476 /* Attend pending lpfc data processing */
477 lpfc_work_done(phba);
478 }
479 return 0;
480 }
481
482 /*
483 * This is only called to handle FC worker events. Since this a rare
484 * occurance, we allocate a struct lpfc_work_evt structure here instead of
485 * embedding it in the IOCB.
486 */
487 int
488 lpfc_workq_post_event(struct lpfc_hba *phba, void *arg1, void *arg2,
489 uint32_t evt)
490 {
491 struct lpfc_work_evt *evtp;
492 unsigned long flags;
493
494 /*
495 * All Mailbox completions and LPFC_ELS_RING rcv ring IOCB events will
496 * be queued to worker thread for processing
497 */
498 evtp = kmalloc(sizeof(struct lpfc_work_evt), GFP_ATOMIC);
499 if (!evtp)
500 return 0;
501
502 evtp->evt_arg1 = arg1;
503 evtp->evt_arg2 = arg2;
504 evtp->evt = evt;
505
506 spin_lock_irqsave(&phba->hbalock, flags);
507 list_add_tail(&evtp->evt_listp, &phba->work_list);
508 spin_unlock_irqrestore(&phba->hbalock, flags);
509
510 lpfc_worker_wake_up(phba);
511
512 return 1;
513 }
514
515 void
516 lpfc_cleanup_rpis(struct lpfc_vport *vport, int remove)
517 {
518 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
519 struct lpfc_hba *phba = vport->phba;
520 struct lpfc_nodelist *ndlp, *next_ndlp;
521 int rc;
522
523 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) {
524 if (!NLP_CHK_NODE_ACT(ndlp))
525 continue;
526 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
527 continue;
528 if ((phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN) ||
529 ((vport->port_type == LPFC_NPIV_PORT) &&
530 (ndlp->nlp_DID == NameServer_DID)))
531 lpfc_unreg_rpi(vport, ndlp);
532
533 /* Leave Fabric nodes alone on link down */
534 if (!remove && ndlp->nlp_type & NLP_FABRIC)
535 continue;
536 rc = lpfc_disc_state_machine(vport, ndlp, NULL,
537 remove
538 ? NLP_EVT_DEVICE_RM
539 : NLP_EVT_DEVICE_RECOVERY);
540 }
541 if (phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN) {
542 lpfc_mbx_unreg_vpi(vport);
543 spin_lock_irq(shost->host_lock);
544 vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
545 spin_unlock_irq(shost->host_lock);
546 }
547 }
548
549 void
550 lpfc_port_link_failure(struct lpfc_vport *vport)
551 {
552 /* Cleanup any outstanding RSCN activity */
553 lpfc_els_flush_rscn(vport);
554
555 /* Cleanup any outstanding ELS commands */
556 lpfc_els_flush_cmd(vport);
557
558 lpfc_cleanup_rpis(vport, 0);
559
560 /* Turn off discovery timer if its running */
561 lpfc_can_disctmo(vport);
562 }
563
564 static void
565 lpfc_linkdown_port(struct lpfc_vport *vport)
566 {
567 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
568
569 fc_host_post_event(shost, fc_get_event_number(), FCH_EVT_LINKDOWN, 0);
570
571 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
572 "Link Down: state:x%x rtry:x%x flg:x%x",
573 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
574
575 lpfc_port_link_failure(vport);
576
577 }
578
579 int
580 lpfc_linkdown(struct lpfc_hba *phba)
581 {
582 struct lpfc_vport *vport = phba->pport;
583 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
584 struct lpfc_vport **vports;
585 LPFC_MBOXQ_t *mb;
586 int i;
587
588 if (phba->link_state == LPFC_LINK_DOWN)
589 return 0;
590 spin_lock_irq(&phba->hbalock);
591 if (phba->link_state > LPFC_LINK_DOWN) {
592 phba->link_state = LPFC_LINK_DOWN;
593 phba->pport->fc_flag &= ~FC_LBIT;
594 }
595 spin_unlock_irq(&phba->hbalock);
596 vports = lpfc_create_vport_work_array(phba);
597 if (vports != NULL)
598 for(i = 0; i <= phba->max_vpi && vports[i] != NULL; i++) {
599 /* Issue a LINK DOWN event to all nodes */
600 lpfc_linkdown_port(vports[i]);
601 }
602 lpfc_destroy_vport_work_array(phba, vports);
603 /* Clean up any firmware default rpi's */
604 mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
605 if (mb) {
606 lpfc_unreg_did(phba, 0xffff, 0xffffffff, mb);
607 mb->vport = vport;
608 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
609 if (lpfc_sli_issue_mbox(phba, mb, MBX_NOWAIT)
610 == MBX_NOT_FINISHED) {
611 mempool_free(mb, phba->mbox_mem_pool);
612 }
613 }
614
615 /* Setup myDID for link up if we are in pt2pt mode */
616 if (phba->pport->fc_flag & FC_PT2PT) {
617 phba->pport->fc_myDID = 0;
618 mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
619 if (mb) {
620 lpfc_config_link(phba, mb);
621 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
622 mb->vport = vport;
623 if (lpfc_sli_issue_mbox(phba, mb, MBX_NOWAIT)
624 == MBX_NOT_FINISHED) {
625 mempool_free(mb, phba->mbox_mem_pool);
626 }
627 }
628 spin_lock_irq(shost->host_lock);
629 phba->pport->fc_flag &= ~(FC_PT2PT | FC_PT2PT_PLOGI);
630 spin_unlock_irq(shost->host_lock);
631 }
632
633 return 0;
634 }
635
636 static void
637 lpfc_linkup_cleanup_nodes(struct lpfc_vport *vport)
638 {
639 struct lpfc_nodelist *ndlp;
640
641 list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
642 if (!NLP_CHK_NODE_ACT(ndlp))
643 continue;
644 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
645 continue;
646 if (ndlp->nlp_type & NLP_FABRIC) {
647 /* On Linkup its safe to clean up the ndlp
648 * from Fabric connections.
649 */
650 if (ndlp->nlp_DID != Fabric_DID)
651 lpfc_unreg_rpi(vport, ndlp);
652 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
653 } else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) {
654 /* Fail outstanding IO now since device is
655 * marked for PLOGI.
656 */
657 lpfc_unreg_rpi(vport, ndlp);
658 }
659 }
660 }
661
662 static void
663 lpfc_linkup_port(struct lpfc_vport *vport)
664 {
665 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
666 struct lpfc_hba *phba = vport->phba;
667
668 if ((vport->load_flag & FC_UNLOADING) != 0)
669 return;
670
671 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
672 "Link Up: top:x%x speed:x%x flg:x%x",
673 phba->fc_topology, phba->fc_linkspeed, phba->link_flag);
674
675 /* If NPIV is not enabled, only bring the physical port up */
676 if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
677 (vport != phba->pport))
678 return;
679
680 fc_host_post_event(shost, fc_get_event_number(), FCH_EVT_LINKUP, 0);
681
682 spin_lock_irq(shost->host_lock);
683 vport->fc_flag &= ~(FC_PT2PT | FC_PT2PT_PLOGI | FC_ABORT_DISCOVERY |
684 FC_RSCN_MODE | FC_NLP_MORE | FC_RSCN_DISCOVERY);
685 vport->fc_flag |= FC_NDISC_ACTIVE;
686 vport->fc_ns_retry = 0;
687 spin_unlock_irq(shost->host_lock);
688
689 if (vport->fc_flag & FC_LBIT)
690 lpfc_linkup_cleanup_nodes(vport);
691
692 }
693
694 static int
695 lpfc_linkup(struct lpfc_hba *phba)
696 {
697 struct lpfc_vport **vports;
698 int i;
699
700 phba->link_state = LPFC_LINK_UP;
701
702 /* Unblock fabric iocbs if they are blocked */
703 clear_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags);
704 del_timer_sync(&phba->fabric_block_timer);
705
706 vports = lpfc_create_vport_work_array(phba);
707 if (vports != NULL)
708 for(i = 0; i <= phba->max_vpi && vports[i] != NULL; i++)
709 lpfc_linkup_port(vports[i]);
710 lpfc_destroy_vport_work_array(phba, vports);
711 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
712 lpfc_issue_clear_la(phba, phba->pport);
713
714 return 0;
715 }
716
717 /*
718 * This routine handles processing a CLEAR_LA mailbox
719 * command upon completion. It is setup in the LPFC_MBOXQ
720 * as the completion routine when the command is
721 * handed off to the SLI layer.
722 */
723 static void
724 lpfc_mbx_cmpl_clear_la(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
725 {
726 struct lpfc_vport *vport = pmb->vport;
727 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
728 struct lpfc_sli *psli = &phba->sli;
729 MAILBOX_t *mb = &pmb->mb;
730 uint32_t control;
731
732 /* Since we don't do discovery right now, turn these off here */
733 psli->ring[psli->extra_ring].flag &= ~LPFC_STOP_IOCB_EVENT;
734 psli->ring[psli->fcp_ring].flag &= ~LPFC_STOP_IOCB_EVENT;
735 psli->ring[psli->next_ring].flag &= ~LPFC_STOP_IOCB_EVENT;
736
737 /* Check for error */
738 if ((mb->mbxStatus) && (mb->mbxStatus != 0x1601)) {
739 /* CLEAR_LA mbox error <mbxStatus> state <hba_state> */
740 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
741 "0320 CLEAR_LA mbxStatus error x%x hba "
742 "state x%x\n",
743 mb->mbxStatus, vport->port_state);
744 phba->link_state = LPFC_HBA_ERROR;
745 goto out;
746 }
747
748 if (vport->port_type == LPFC_PHYSICAL_PORT)
749 phba->link_state = LPFC_HBA_READY;
750
751 spin_lock_irq(&phba->hbalock);
752 psli->sli_flag |= LPFC_PROCESS_LA;
753 control = readl(phba->HCregaddr);
754 control |= HC_LAINT_ENA;
755 writel(control, phba->HCregaddr);
756 readl(phba->HCregaddr); /* flush */
757 spin_unlock_irq(&phba->hbalock);
758 mempool_free(pmb, phba->mbox_mem_pool);
759 return;
760
761 out:
762 /* Device Discovery completes */
763 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
764 "0225 Device Discovery completes\n");
765 mempool_free(pmb, phba->mbox_mem_pool);
766
767 spin_lock_irq(shost->host_lock);
768 vport->fc_flag &= ~FC_ABORT_DISCOVERY;
769 spin_unlock_irq(shost->host_lock);
770
771 lpfc_can_disctmo(vport);
772
773 /* turn on Link Attention interrupts */
774
775 spin_lock_irq(&phba->hbalock);
776 psli->sli_flag |= LPFC_PROCESS_LA;
777 control = readl(phba->HCregaddr);
778 control |= HC_LAINT_ENA;
779 writel(control, phba->HCregaddr);
780 readl(phba->HCregaddr); /* flush */
781 spin_unlock_irq(&phba->hbalock);
782
783 return;
784 }
785
786
787 static void
788 lpfc_mbx_cmpl_local_config_link(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
789 {
790 struct lpfc_vport *vport = pmb->vport;
791
792 if (pmb->mb.mbxStatus)
793 goto out;
794
795 mempool_free(pmb, phba->mbox_mem_pool);
796
797 if (phba->fc_topology == TOPOLOGY_LOOP &&
798 vport->fc_flag & FC_PUBLIC_LOOP &&
799 !(vport->fc_flag & FC_LBIT)) {
800 /* Need to wait for FAN - use discovery timer
801 * for timeout. port_state is identically
802 * LPFC_LOCAL_CFG_LINK while waiting for FAN
803 */
804 lpfc_set_disctmo(vport);
805 return;
806 }
807
808 /* Start discovery by sending a FLOGI. port_state is identically
809 * LPFC_FLOGI while waiting for FLOGI cmpl
810 */
811 if (vport->port_state != LPFC_FLOGI) {
812 lpfc_initial_flogi(vport);
813 }
814 return;
815
816 out:
817 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
818 "0306 CONFIG_LINK mbxStatus error x%x "
819 "HBA state x%x\n",
820 pmb->mb.mbxStatus, vport->port_state);
821 mempool_free(pmb, phba->mbox_mem_pool);
822
823 lpfc_linkdown(phba);
824
825 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
826 "0200 CONFIG_LINK bad hba state x%x\n",
827 vport->port_state);
828
829 lpfc_issue_clear_la(phba, vport);
830 return;
831 }
832
833 static void
834 lpfc_mbx_cmpl_read_sparam(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
835 {
836 MAILBOX_t *mb = &pmb->mb;
837 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) pmb->context1;
838 struct lpfc_vport *vport = pmb->vport;
839
840
841 /* Check for error */
842 if (mb->mbxStatus) {
843 /* READ_SPARAM mbox error <mbxStatus> state <hba_state> */
844 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
845 "0319 READ_SPARAM mbxStatus error x%x "
846 "hba state x%x>\n",
847 mb->mbxStatus, vport->port_state);
848 lpfc_linkdown(phba);
849 goto out;
850 }
851
852 memcpy((uint8_t *) &vport->fc_sparam, (uint8_t *) mp->virt,
853 sizeof (struct serv_parm));
854 if (phba->cfg_soft_wwnn)
855 u64_to_wwn(phba->cfg_soft_wwnn,
856 vport->fc_sparam.nodeName.u.wwn);
857 if (phba->cfg_soft_wwpn)
858 u64_to_wwn(phba->cfg_soft_wwpn,
859 vport->fc_sparam.portName.u.wwn);
860 memcpy(&vport->fc_nodename, &vport->fc_sparam.nodeName,
861 sizeof(vport->fc_nodename));
862 memcpy(&vport->fc_portname, &vport->fc_sparam.portName,
863 sizeof(vport->fc_portname));
864 if (vport->port_type == LPFC_PHYSICAL_PORT) {
865 memcpy(&phba->wwnn, &vport->fc_nodename, sizeof(phba->wwnn));
866 memcpy(&phba->wwpn, &vport->fc_portname, sizeof(phba->wwnn));
867 }
868
869 lpfc_mbuf_free(phba, mp->virt, mp->phys);
870 kfree(mp);
871 mempool_free(pmb, phba->mbox_mem_pool);
872 return;
873
874 out:
875 pmb->context1 = NULL;
876 lpfc_mbuf_free(phba, mp->virt, mp->phys);
877 kfree(mp);
878 lpfc_issue_clear_la(phba, vport);
879 mempool_free(pmb, phba->mbox_mem_pool);
880 return;
881 }
882
883 static void
884 lpfc_mbx_process_link_up(struct lpfc_hba *phba, READ_LA_VAR *la)
885 {
886 struct lpfc_vport *vport = phba->pport;
887 LPFC_MBOXQ_t *sparam_mbox, *cfglink_mbox;
888 int i;
889 struct lpfc_dmabuf *mp;
890 int rc;
891
892 sparam_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
893 cfglink_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
894
895 spin_lock_irq(&phba->hbalock);
896 switch (la->UlnkSpeed) {
897 case LA_1GHZ_LINK:
898 phba->fc_linkspeed = LA_1GHZ_LINK;
899 break;
900 case LA_2GHZ_LINK:
901 phba->fc_linkspeed = LA_2GHZ_LINK;
902 break;
903 case LA_4GHZ_LINK:
904 phba->fc_linkspeed = LA_4GHZ_LINK;
905 break;
906 case LA_8GHZ_LINK:
907 phba->fc_linkspeed = LA_8GHZ_LINK;
908 break;
909 default:
910 phba->fc_linkspeed = LA_UNKNW_LINK;
911 break;
912 }
913
914 phba->fc_topology = la->topology;
915 phba->link_flag &= ~LS_NPIV_FAB_SUPPORTED;
916
917 if (phba->fc_topology == TOPOLOGY_LOOP) {
918 phba->sli3_options &= ~LPFC_SLI3_NPIV_ENABLED;
919
920 if (phba->cfg_enable_npiv)
921 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
922 "1309 Link Up Event npiv not supported in loop "
923 "topology\n");
924 /* Get Loop Map information */
925 if (la->il)
926 vport->fc_flag |= FC_LBIT;
927
928 vport->fc_myDID = la->granted_AL_PA;
929 i = la->un.lilpBde64.tus.f.bdeSize;
930
931 if (i == 0) {
932 phba->alpa_map[0] = 0;
933 } else {
934 if (vport->cfg_log_verbose & LOG_LINK_EVENT) {
935 int numalpa, j, k;
936 union {
937 uint8_t pamap[16];
938 struct {
939 uint32_t wd1;
940 uint32_t wd2;
941 uint32_t wd3;
942 uint32_t wd4;
943 } pa;
944 } un;
945 numalpa = phba->alpa_map[0];
946 j = 0;
947 while (j < numalpa) {
948 memset(un.pamap, 0, 16);
949 for (k = 1; j < numalpa; k++) {
950 un.pamap[k - 1] =
951 phba->alpa_map[j + 1];
952 j++;
953 if (k == 16)
954 break;
955 }
956 /* Link Up Event ALPA map */
957 lpfc_printf_log(phba,
958 KERN_WARNING,
959 LOG_LINK_EVENT,
960 "1304 Link Up Event "
961 "ALPA map Data: x%x "
962 "x%x x%x x%x\n",
963 un.pa.wd1, un.pa.wd2,
964 un.pa.wd3, un.pa.wd4);
965 }
966 }
967 }
968 } else {
969 if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)) {
970 if (phba->max_vpi && phba->cfg_enable_npiv &&
971 (phba->sli_rev == 3))
972 phba->sli3_options |= LPFC_SLI3_NPIV_ENABLED;
973 }
974 vport->fc_myDID = phba->fc_pref_DID;
975 vport->fc_flag |= FC_LBIT;
976 }
977 spin_unlock_irq(&phba->hbalock);
978
979 lpfc_linkup(phba);
980 if (sparam_mbox) {
981 lpfc_read_sparam(phba, sparam_mbox, 0);
982 sparam_mbox->vport = vport;
983 sparam_mbox->mbox_cmpl = lpfc_mbx_cmpl_read_sparam;
984 rc = lpfc_sli_issue_mbox(phba, sparam_mbox, MBX_NOWAIT);
985 if (rc == MBX_NOT_FINISHED) {
986 mp = (struct lpfc_dmabuf *) sparam_mbox->context1;
987 lpfc_mbuf_free(phba, mp->virt, mp->phys);
988 kfree(mp);
989 mempool_free(sparam_mbox, phba->mbox_mem_pool);
990 if (cfglink_mbox)
991 mempool_free(cfglink_mbox, phba->mbox_mem_pool);
992 goto out;
993 }
994 }
995
996 if (cfglink_mbox) {
997 vport->port_state = LPFC_LOCAL_CFG_LINK;
998 lpfc_config_link(phba, cfglink_mbox);
999 cfglink_mbox->vport = vport;
1000 cfglink_mbox->mbox_cmpl = lpfc_mbx_cmpl_local_config_link;
1001 rc = lpfc_sli_issue_mbox(phba, cfglink_mbox, MBX_NOWAIT);
1002 if (rc != MBX_NOT_FINISHED)
1003 return;
1004 mempool_free(cfglink_mbox, phba->mbox_mem_pool);
1005 }
1006 out:
1007 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
1008 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
1009 "0263 Discovery Mailbox error: state: 0x%x : %p %p\n",
1010 vport->port_state, sparam_mbox, cfglink_mbox);
1011 lpfc_issue_clear_la(phba, vport);
1012 return;
1013 }
1014
1015 static void
1016 lpfc_mbx_issue_link_down(struct lpfc_hba *phba)
1017 {
1018 uint32_t control;
1019 struct lpfc_sli *psli = &phba->sli;
1020
1021 lpfc_linkdown(phba);
1022
1023 /* turn on Link Attention interrupts - no CLEAR_LA needed */
1024 spin_lock_irq(&phba->hbalock);
1025 psli->sli_flag |= LPFC_PROCESS_LA;
1026 control = readl(phba->HCregaddr);
1027 control |= HC_LAINT_ENA;
1028 writel(control, phba->HCregaddr);
1029 readl(phba->HCregaddr); /* flush */
1030 spin_unlock_irq(&phba->hbalock);
1031 }
1032
1033 /*
1034 * This routine handles processing a READ_LA mailbox
1035 * command upon completion. It is setup in the LPFC_MBOXQ
1036 * as the completion routine when the command is
1037 * handed off to the SLI layer.
1038 */
1039 void
1040 lpfc_mbx_cmpl_read_la(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1041 {
1042 struct lpfc_vport *vport = pmb->vport;
1043 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1044 READ_LA_VAR *la;
1045 MAILBOX_t *mb = &pmb->mb;
1046 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
1047
1048 /* Unblock ELS traffic */
1049 phba->sli.ring[LPFC_ELS_RING].flag &= ~LPFC_STOP_IOCB_EVENT;
1050 /* Check for error */
1051 if (mb->mbxStatus) {
1052 lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT,
1053 "1307 READ_LA mbox error x%x state x%x\n",
1054 mb->mbxStatus, vport->port_state);
1055 lpfc_mbx_issue_link_down(phba);
1056 phba->link_state = LPFC_HBA_ERROR;
1057 goto lpfc_mbx_cmpl_read_la_free_mbuf;
1058 }
1059
1060 la = (READ_LA_VAR *) & pmb->mb.un.varReadLA;
1061
1062 memcpy(&phba->alpa_map[0], mp->virt, 128);
1063
1064 spin_lock_irq(shost->host_lock);
1065 if (la->pb)
1066 vport->fc_flag |= FC_BYPASSED_MODE;
1067 else
1068 vport->fc_flag &= ~FC_BYPASSED_MODE;
1069 spin_unlock_irq(shost->host_lock);
1070
1071 if (((phba->fc_eventTag + 1) < la->eventTag) ||
1072 (phba->fc_eventTag == la->eventTag)) {
1073 phba->fc_stat.LinkMultiEvent++;
1074 if (la->attType == AT_LINK_UP)
1075 if (phba->fc_eventTag != 0)
1076 lpfc_linkdown(phba);
1077 }
1078
1079 phba->fc_eventTag = la->eventTag;
1080
1081 if (la->attType == AT_LINK_UP) {
1082 phba->fc_stat.LinkUp++;
1083 if (phba->link_flag & LS_LOOPBACK_MODE) {
1084 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
1085 "1306 Link Up Event in loop back mode "
1086 "x%x received Data: x%x x%x x%x x%x\n",
1087 la->eventTag, phba->fc_eventTag,
1088 la->granted_AL_PA, la->UlnkSpeed,
1089 phba->alpa_map[0]);
1090 } else {
1091 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
1092 "1303 Link Up Event x%x received "
1093 "Data: x%x x%x x%x x%x\n",
1094 la->eventTag, phba->fc_eventTag,
1095 la->granted_AL_PA, la->UlnkSpeed,
1096 phba->alpa_map[0]);
1097 }
1098 lpfc_mbx_process_link_up(phba, la);
1099 } else {
1100 phba->fc_stat.LinkDown++;
1101 if (phba->link_flag & LS_LOOPBACK_MODE) {
1102 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
1103 "1308 Link Down Event in loop back mode "
1104 "x%x received "
1105 "Data: x%x x%x x%x\n",
1106 la->eventTag, phba->fc_eventTag,
1107 phba->pport->port_state, vport->fc_flag);
1108 }
1109 else {
1110 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
1111 "1305 Link Down Event x%x received "
1112 "Data: x%x x%x x%x\n",
1113 la->eventTag, phba->fc_eventTag,
1114 phba->pport->port_state, vport->fc_flag);
1115 }
1116 lpfc_mbx_issue_link_down(phba);
1117 }
1118
1119 lpfc_mbx_cmpl_read_la_free_mbuf:
1120 lpfc_mbuf_free(phba, mp->virt, mp->phys);
1121 kfree(mp);
1122 mempool_free(pmb, phba->mbox_mem_pool);
1123 return;
1124 }
1125
1126 /*
1127 * This routine handles processing a REG_LOGIN mailbox
1128 * command upon completion. It is setup in the LPFC_MBOXQ
1129 * as the completion routine when the command is
1130 * handed off to the SLI layer.
1131 */
1132 void
1133 lpfc_mbx_cmpl_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1134 {
1135 struct lpfc_vport *vport = pmb->vport;
1136 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
1137 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2;
1138
1139 pmb->context1 = NULL;
1140
1141 /* Good status, call state machine */
1142 lpfc_disc_state_machine(vport, ndlp, pmb, NLP_EVT_CMPL_REG_LOGIN);
1143 lpfc_mbuf_free(phba, mp->virt, mp->phys);
1144 kfree(mp);
1145 mempool_free(pmb, phba->mbox_mem_pool);
1146 /* decrement the node reference count held for this callback
1147 * function.
1148 */
1149 lpfc_nlp_put(ndlp);
1150
1151 return;
1152 }
1153
1154 static void
1155 lpfc_mbx_cmpl_unreg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1156 {
1157 MAILBOX_t *mb = &pmb->mb;
1158 struct lpfc_vport *vport = pmb->vport;
1159 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1160
1161 switch (mb->mbxStatus) {
1162 case 0x0011:
1163 case 0x0020:
1164 case 0x9700:
1165 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
1166 "0911 cmpl_unreg_vpi, mb status = 0x%x\n",
1167 mb->mbxStatus);
1168 break;
1169 }
1170 vport->unreg_vpi_cmpl = VPORT_OK;
1171 mempool_free(pmb, phba->mbox_mem_pool);
1172 /*
1173 * This shost reference might have been taken at the beginning of
1174 * lpfc_vport_delete()
1175 */
1176 if (vport->load_flag & FC_UNLOADING)
1177 scsi_host_put(shost);
1178 }
1179
1180 int
1181 lpfc_mbx_unreg_vpi(struct lpfc_vport *vport)
1182 {
1183 struct lpfc_hba *phba = vport->phba;
1184 LPFC_MBOXQ_t *mbox;
1185 int rc;
1186
1187 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1188 if (!mbox)
1189 return 1;
1190
1191 lpfc_unreg_vpi(phba, vport->vpi, mbox);
1192 mbox->vport = vport;
1193 mbox->mbox_cmpl = lpfc_mbx_cmpl_unreg_vpi;
1194 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
1195 if (rc == MBX_NOT_FINISHED) {
1196 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX | LOG_VPORT,
1197 "1800 Could not issue unreg_vpi\n");
1198 mempool_free(mbox, phba->mbox_mem_pool);
1199 vport->unreg_vpi_cmpl = VPORT_ERROR;
1200 return rc;
1201 }
1202 return 0;
1203 }
1204
1205 static void
1206 lpfc_mbx_cmpl_reg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1207 {
1208 struct lpfc_vport *vport = pmb->vport;
1209 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1210 MAILBOX_t *mb = &pmb->mb;
1211
1212 switch (mb->mbxStatus) {
1213 case 0x0011:
1214 case 0x9601:
1215 case 0x9602:
1216 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
1217 "0912 cmpl_reg_vpi, mb status = 0x%x\n",
1218 mb->mbxStatus);
1219 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
1220 spin_lock_irq(shost->host_lock);
1221 vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
1222 spin_unlock_irq(shost->host_lock);
1223 vport->fc_myDID = 0;
1224 goto out;
1225 }
1226
1227 vport->num_disc_nodes = 0;
1228 /* go thru NPR list and issue ELS PLOGIs */
1229 if (vport->fc_npr_cnt)
1230 lpfc_els_disc_plogi(vport);
1231
1232 if (!vport->num_disc_nodes) {
1233 spin_lock_irq(shost->host_lock);
1234 vport->fc_flag &= ~FC_NDISC_ACTIVE;
1235 spin_unlock_irq(shost->host_lock);
1236 lpfc_can_disctmo(vport);
1237 }
1238 vport->port_state = LPFC_VPORT_READY;
1239
1240 out:
1241 mempool_free(pmb, phba->mbox_mem_pool);
1242 return;
1243 }
1244
1245 /*
1246 * This routine handles processing a Fabric REG_LOGIN mailbox
1247 * command upon completion. It is setup in the LPFC_MBOXQ
1248 * as the completion routine when the command is
1249 * handed off to the SLI layer.
1250 */
1251 void
1252 lpfc_mbx_cmpl_fabric_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1253 {
1254 struct lpfc_vport *vport = pmb->vport;
1255 MAILBOX_t *mb = &pmb->mb;
1256 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
1257 struct lpfc_nodelist *ndlp;
1258 struct lpfc_vport **vports;
1259 int i;
1260
1261 ndlp = (struct lpfc_nodelist *) pmb->context2;
1262 pmb->context1 = NULL;
1263 pmb->context2 = NULL;
1264 if (mb->mbxStatus) {
1265 lpfc_mbuf_free(phba, mp->virt, mp->phys);
1266 kfree(mp);
1267 mempool_free(pmb, phba->mbox_mem_pool);
1268
1269 if (phba->fc_topology == TOPOLOGY_LOOP) {
1270 /* FLOGI failed, use loop map to make discovery list */
1271 lpfc_disc_list_loopmap(vport);
1272
1273 /* Start discovery */
1274 lpfc_disc_start(vport);
1275 /* Decrement the reference count to ndlp after the
1276 * reference to the ndlp are done.
1277 */
1278 lpfc_nlp_put(ndlp);
1279 return;
1280 }
1281
1282 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
1283 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
1284 "0258 Register Fabric login error: 0x%x\n",
1285 mb->mbxStatus);
1286 /* Decrement the reference count to ndlp after the reference
1287 * to the ndlp are done.
1288 */
1289 lpfc_nlp_put(ndlp);
1290 return;
1291 }
1292
1293 ndlp->nlp_rpi = mb->un.varWords[0];
1294 ndlp->nlp_type |= NLP_FABRIC;
1295 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1296
1297 if (vport->port_state == LPFC_FABRIC_CFG_LINK) {
1298 vports = lpfc_create_vport_work_array(phba);
1299 if (vports != NULL)
1300 for(i = 0;
1301 i <= phba->max_vpi && vports[i] != NULL;
1302 i++) {
1303 if (vports[i]->port_type == LPFC_PHYSICAL_PORT)
1304 continue;
1305 if (phba->fc_topology == TOPOLOGY_LOOP) {
1306 lpfc_vport_set_state(vports[i],
1307 FC_VPORT_LINKDOWN);
1308 continue;
1309 }
1310 if (phba->link_flag & LS_NPIV_FAB_SUPPORTED)
1311 lpfc_initial_fdisc(vports[i]);
1312 else {
1313 lpfc_vport_set_state(vports[i],
1314 FC_VPORT_NO_FABRIC_SUPP);
1315 lpfc_printf_vlog(vport, KERN_ERR,
1316 LOG_ELS,
1317 "0259 No NPIV "
1318 "Fabric support\n");
1319 }
1320 }
1321 lpfc_destroy_vport_work_array(phba, vports);
1322 lpfc_do_scr_ns_plogi(phba, vport);
1323 }
1324
1325 lpfc_mbuf_free(phba, mp->virt, mp->phys);
1326 kfree(mp);
1327 mempool_free(pmb, phba->mbox_mem_pool);
1328
1329 /* Drop the reference count from the mbox at the end after
1330 * all the current reference to the ndlp have been done.
1331 */
1332 lpfc_nlp_put(ndlp);
1333 return;
1334 }
1335
1336 /*
1337 * This routine handles processing a NameServer REG_LOGIN mailbox
1338 * command upon completion. It is setup in the LPFC_MBOXQ
1339 * as the completion routine when the command is
1340 * handed off to the SLI layer.
1341 */
1342 void
1343 lpfc_mbx_cmpl_ns_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1344 {
1345 MAILBOX_t *mb = &pmb->mb;
1346 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
1347 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2;
1348 struct lpfc_vport *vport = pmb->vport;
1349
1350 if (mb->mbxStatus) {
1351 out:
1352 /* decrement the node reference count held for this
1353 * callback function.
1354 */
1355 lpfc_nlp_put(ndlp);
1356 lpfc_mbuf_free(phba, mp->virt, mp->phys);
1357 kfree(mp);
1358 mempool_free(pmb, phba->mbox_mem_pool);
1359
1360 /* If no other thread is using the ndlp, free it */
1361 lpfc_nlp_not_used(ndlp);
1362
1363 if (phba->fc_topology == TOPOLOGY_LOOP) {
1364 /*
1365 * RegLogin failed, use loop map to make discovery
1366 * list
1367 */
1368 lpfc_disc_list_loopmap(vport);
1369
1370 /* Start discovery */
1371 lpfc_disc_start(vport);
1372 return;
1373 }
1374 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
1375 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1376 "0260 Register NameServer error: 0x%x\n",
1377 mb->mbxStatus);
1378 return;
1379 }
1380
1381 pmb->context1 = NULL;
1382
1383 ndlp->nlp_rpi = mb->un.varWords[0];
1384 ndlp->nlp_type |= NLP_FABRIC;
1385 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1386
1387 if (vport->port_state < LPFC_VPORT_READY) {
1388 /* Link up discovery requires Fabric registration. */
1389 lpfc_ns_cmd(vport, SLI_CTNS_RFF_ID, 0, 0); /* Do this first! */
1390 lpfc_ns_cmd(vport, SLI_CTNS_RNN_ID, 0, 0);
1391 lpfc_ns_cmd(vport, SLI_CTNS_RSNN_NN, 0, 0);
1392 lpfc_ns_cmd(vport, SLI_CTNS_RSPN_ID, 0, 0);
1393 lpfc_ns_cmd(vport, SLI_CTNS_RFT_ID, 0, 0);
1394
1395 /* Issue SCR just before NameServer GID_FT Query */
1396 lpfc_issue_els_scr(vport, SCR_DID, 0);
1397 }
1398
1399 vport->fc_ns_retry = 0;
1400 /* Good status, issue CT Request to NameServer */
1401 if (lpfc_ns_cmd(vport, SLI_CTNS_GID_FT, 0, 0)) {
1402 /* Cannot issue NameServer Query, so finish up discovery */
1403 goto out;
1404 }
1405
1406 /* decrement the node reference count held for this
1407 * callback function.
1408 */
1409 lpfc_nlp_put(ndlp);
1410 lpfc_mbuf_free(phba, mp->virt, mp->phys);
1411 kfree(mp);
1412 mempool_free(pmb, phba->mbox_mem_pool);
1413
1414 return;
1415 }
1416
1417 static void
1418 lpfc_register_remote_port(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
1419 {
1420 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1421 struct fc_rport *rport;
1422 struct lpfc_rport_data *rdata;
1423 struct fc_rport_identifiers rport_ids;
1424 struct lpfc_hba *phba = vport->phba;
1425
1426 /* Remote port has reappeared. Re-register w/ FC transport */
1427 rport_ids.node_name = wwn_to_u64(ndlp->nlp_nodename.u.wwn);
1428 rport_ids.port_name = wwn_to_u64(ndlp->nlp_portname.u.wwn);
1429 rport_ids.port_id = ndlp->nlp_DID;
1430 rport_ids.roles = FC_RPORT_ROLE_UNKNOWN;
1431
1432 /*
1433 * We leave our node pointer in rport->dd_data when we unregister a
1434 * FCP target port. But fc_remote_port_add zeros the space to which
1435 * rport->dd_data points. So, if we're reusing a previously
1436 * registered port, drop the reference that we took the last time we
1437 * registered the port.
1438 */
1439 if (ndlp->rport && ndlp->rport->dd_data &&
1440 ((struct lpfc_rport_data *) ndlp->rport->dd_data)->pnode == ndlp)
1441 lpfc_nlp_put(ndlp);
1442
1443 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
1444 "rport add: did:x%x flg:x%x type x%x",
1445 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
1446
1447 ndlp->rport = rport = fc_remote_port_add(shost, 0, &rport_ids);
1448 if (!rport || !get_device(&rport->dev)) {
1449 dev_printk(KERN_WARNING, &phba->pcidev->dev,
1450 "Warning: fc_remote_port_add failed\n");
1451 return;
1452 }
1453
1454 /* initialize static port data */
1455 rport->maxframe_size = ndlp->nlp_maxframe;
1456 rport->supported_classes = ndlp->nlp_class_sup;
1457 rdata = rport->dd_data;
1458 rdata->pnode = lpfc_nlp_get(ndlp);
1459
1460 if (ndlp->nlp_type & NLP_FCP_TARGET)
1461 rport_ids.roles |= FC_RPORT_ROLE_FCP_TARGET;
1462 if (ndlp->nlp_type & NLP_FCP_INITIATOR)
1463 rport_ids.roles |= FC_RPORT_ROLE_FCP_INITIATOR;
1464
1465
1466 if (rport_ids.roles != FC_RPORT_ROLE_UNKNOWN)
1467 fc_remote_port_rolechg(rport, rport_ids.roles);
1468
1469 if ((rport->scsi_target_id != -1) &&
1470 (rport->scsi_target_id < LPFC_MAX_TARGET)) {
1471 ndlp->nlp_sid = rport->scsi_target_id;
1472 }
1473 return;
1474 }
1475
1476 static void
1477 lpfc_unregister_remote_port(struct lpfc_nodelist *ndlp)
1478 {
1479 struct fc_rport *rport = ndlp->rport;
1480
1481 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_RPORT,
1482 "rport delete: did:x%x flg:x%x type x%x",
1483 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
1484
1485 fc_remote_port_delete(rport);
1486
1487 return;
1488 }
1489
1490 static void
1491 lpfc_nlp_counters(struct lpfc_vport *vport, int state, int count)
1492 {
1493 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1494
1495 spin_lock_irq(shost->host_lock);
1496 switch (state) {
1497 case NLP_STE_UNUSED_NODE:
1498 vport->fc_unused_cnt += count;
1499 break;
1500 case NLP_STE_PLOGI_ISSUE:
1501 vport->fc_plogi_cnt += count;
1502 break;
1503 case NLP_STE_ADISC_ISSUE:
1504 vport->fc_adisc_cnt += count;
1505 break;
1506 case NLP_STE_REG_LOGIN_ISSUE:
1507 vport->fc_reglogin_cnt += count;
1508 break;
1509 case NLP_STE_PRLI_ISSUE:
1510 vport->fc_prli_cnt += count;
1511 break;
1512 case NLP_STE_UNMAPPED_NODE:
1513 vport->fc_unmap_cnt += count;
1514 break;
1515 case NLP_STE_MAPPED_NODE:
1516 vport->fc_map_cnt += count;
1517 break;
1518 case NLP_STE_NPR_NODE:
1519 vport->fc_npr_cnt += count;
1520 break;
1521 }
1522 spin_unlock_irq(shost->host_lock);
1523 }
1524
1525 static void
1526 lpfc_nlp_state_cleanup(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1527 int old_state, int new_state)
1528 {
1529 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1530
1531 if (new_state == NLP_STE_UNMAPPED_NODE) {
1532 ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
1533 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE;
1534 ndlp->nlp_type |= NLP_FC_NODE;
1535 }
1536 if (new_state == NLP_STE_MAPPED_NODE)
1537 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE;
1538 if (new_state == NLP_STE_NPR_NODE)
1539 ndlp->nlp_flag &= ~NLP_RCV_PLOGI;
1540
1541 /* Transport interface */
1542 if (ndlp->rport && (old_state == NLP_STE_MAPPED_NODE ||
1543 old_state == NLP_STE_UNMAPPED_NODE)) {
1544 vport->phba->nport_event_cnt++;
1545 lpfc_unregister_remote_port(ndlp);
1546 }
1547
1548 if (new_state == NLP_STE_MAPPED_NODE ||
1549 new_state == NLP_STE_UNMAPPED_NODE) {
1550 vport->phba->nport_event_cnt++;
1551 /*
1552 * Tell the fc transport about the port, if we haven't
1553 * already. If we have, and it's a scsi entity, be
1554 * sure to unblock any attached scsi devices
1555 */
1556 lpfc_register_remote_port(vport, ndlp);
1557 }
1558 /*
1559 * if we added to Mapped list, but the remote port
1560 * registration failed or assigned a target id outside
1561 * our presentable range - move the node to the
1562 * Unmapped List
1563 */
1564 if (new_state == NLP_STE_MAPPED_NODE &&
1565 (!ndlp->rport ||
1566 ndlp->rport->scsi_target_id == -1 ||
1567 ndlp->rport->scsi_target_id >= LPFC_MAX_TARGET)) {
1568 spin_lock_irq(shost->host_lock);
1569 ndlp->nlp_flag |= NLP_TGT_NO_SCSIID;
1570 spin_unlock_irq(shost->host_lock);
1571 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1572 }
1573 }
1574
1575 static char *
1576 lpfc_nlp_state_name(char *buffer, size_t size, int state)
1577 {
1578 static char *states[] = {
1579 [NLP_STE_UNUSED_NODE] = "UNUSED",
1580 [NLP_STE_PLOGI_ISSUE] = "PLOGI",
1581 [NLP_STE_ADISC_ISSUE] = "ADISC",
1582 [NLP_STE_REG_LOGIN_ISSUE] = "REGLOGIN",
1583 [NLP_STE_PRLI_ISSUE] = "PRLI",
1584 [NLP_STE_UNMAPPED_NODE] = "UNMAPPED",
1585 [NLP_STE_MAPPED_NODE] = "MAPPED",
1586 [NLP_STE_NPR_NODE] = "NPR",
1587 };
1588
1589 if (state < NLP_STE_MAX_STATE && states[state])
1590 strlcpy(buffer, states[state], size);
1591 else
1592 snprintf(buffer, size, "unknown (%d)", state);
1593 return buffer;
1594 }
1595
1596 void
1597 lpfc_nlp_set_state(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1598 int state)
1599 {
1600 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1601 int old_state = ndlp->nlp_state;
1602 char name1[16], name2[16];
1603
1604 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
1605 "0904 NPort state transition x%06x, %s -> %s\n",
1606 ndlp->nlp_DID,
1607 lpfc_nlp_state_name(name1, sizeof(name1), old_state),
1608 lpfc_nlp_state_name(name2, sizeof(name2), state));
1609
1610 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
1611 "node statechg did:x%x old:%d ste:%d",
1612 ndlp->nlp_DID, old_state, state);
1613
1614 if (old_state == NLP_STE_NPR_NODE &&
1615 state != NLP_STE_NPR_NODE)
1616 lpfc_cancel_retry_delay_tmo(vport, ndlp);
1617 if (old_state == NLP_STE_UNMAPPED_NODE) {
1618 ndlp->nlp_flag &= ~NLP_TGT_NO_SCSIID;
1619 ndlp->nlp_type &= ~NLP_FC_NODE;
1620 }
1621
1622 if (list_empty(&ndlp->nlp_listp)) {
1623 spin_lock_irq(shost->host_lock);
1624 list_add_tail(&ndlp->nlp_listp, &vport->fc_nodes);
1625 spin_unlock_irq(shost->host_lock);
1626 } else if (old_state)
1627 lpfc_nlp_counters(vport, old_state, -1);
1628
1629 ndlp->nlp_state = state;
1630 lpfc_nlp_counters(vport, state, 1);
1631 lpfc_nlp_state_cleanup(vport, ndlp, old_state, state);
1632 }
1633
1634 void
1635 lpfc_enqueue_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
1636 {
1637 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1638
1639 if (list_empty(&ndlp->nlp_listp)) {
1640 spin_lock_irq(shost->host_lock);
1641 list_add_tail(&ndlp->nlp_listp, &vport->fc_nodes);
1642 spin_unlock_irq(shost->host_lock);
1643 }
1644 }
1645
1646 void
1647 lpfc_dequeue_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
1648 {
1649 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1650
1651 lpfc_cancel_retry_delay_tmo(vport, ndlp);
1652 if (ndlp->nlp_state && !list_empty(&ndlp->nlp_listp))
1653 lpfc_nlp_counters(vport, ndlp->nlp_state, -1);
1654 spin_lock_irq(shost->host_lock);
1655 list_del_init(&ndlp->nlp_listp);
1656 spin_unlock_irq(shost->host_lock);
1657 lpfc_nlp_state_cleanup(vport, ndlp, ndlp->nlp_state,
1658 NLP_STE_UNUSED_NODE);
1659 }
1660
1661 static void
1662 lpfc_disable_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
1663 {
1664 lpfc_cancel_retry_delay_tmo(vport, ndlp);
1665 if (ndlp->nlp_state && !list_empty(&ndlp->nlp_listp))
1666 lpfc_nlp_counters(vport, ndlp->nlp_state, -1);
1667 lpfc_nlp_state_cleanup(vport, ndlp, ndlp->nlp_state,
1668 NLP_STE_UNUSED_NODE);
1669 }
1670
1671 struct lpfc_nodelist *
1672 lpfc_enable_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1673 int state)
1674 {
1675 struct lpfc_hba *phba = vport->phba;
1676 uint32_t did;
1677 unsigned long flags;
1678
1679 if (!ndlp)
1680 return NULL;
1681
1682 spin_lock_irqsave(&phba->ndlp_lock, flags);
1683 /* The ndlp should not be in memory free mode */
1684 if (NLP_CHK_FREE_REQ(ndlp)) {
1685 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
1686 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE,
1687 "0277 lpfc_enable_node: ndlp:x%p "
1688 "usgmap:x%x refcnt:%d\n",
1689 (void *)ndlp, ndlp->nlp_usg_map,
1690 atomic_read(&ndlp->kref.refcount));
1691 return NULL;
1692 }
1693 /* The ndlp should not already be in active mode */
1694 if (NLP_CHK_NODE_ACT(ndlp)) {
1695 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
1696 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE,
1697 "0278 lpfc_enable_node: ndlp:x%p "
1698 "usgmap:x%x refcnt:%d\n",
1699 (void *)ndlp, ndlp->nlp_usg_map,
1700 atomic_read(&ndlp->kref.refcount));
1701 return NULL;
1702 }
1703
1704 /* Keep the original DID */
1705 did = ndlp->nlp_DID;
1706
1707 /* re-initialize ndlp except of ndlp linked list pointer */
1708 memset((((char *)ndlp) + sizeof (struct list_head)), 0,
1709 sizeof (struct lpfc_nodelist) - sizeof (struct list_head));
1710 INIT_LIST_HEAD(&ndlp->els_retry_evt.evt_listp);
1711 INIT_LIST_HEAD(&ndlp->dev_loss_evt.evt_listp);
1712 init_timer(&ndlp->nlp_delayfunc);
1713 ndlp->nlp_delayfunc.function = lpfc_els_retry_delay;
1714 ndlp->nlp_delayfunc.data = (unsigned long)ndlp;
1715 ndlp->nlp_DID = did;
1716 ndlp->vport = vport;
1717 ndlp->nlp_sid = NLP_NO_SID;
1718 /* ndlp management re-initialize */
1719 kref_init(&ndlp->kref);
1720 NLP_INT_NODE_ACT(ndlp);
1721
1722 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
1723
1724 if (state != NLP_STE_UNUSED_NODE)
1725 lpfc_nlp_set_state(vport, ndlp, state);
1726
1727 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
1728 "node enable: did:x%x",
1729 ndlp->nlp_DID, 0, 0);
1730 return ndlp;
1731 }
1732
1733 void
1734 lpfc_drop_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
1735 {
1736 /*
1737 * Use of lpfc_drop_node and UNUSED list: lpfc_drop_node should
1738 * be used if we wish to issue the "last" lpfc_nlp_put() to remove
1739 * the ndlp from the vport. The ndlp marked as UNUSED on the list
1740 * until ALL other outstanding threads have completed. We check
1741 * that the ndlp not already in the UNUSED state before we proceed.
1742 */
1743 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
1744 return;
1745 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNUSED_NODE);
1746 lpfc_nlp_put(ndlp);
1747 return;
1748 }
1749
1750 /*
1751 * Start / ReStart rescue timer for Discovery / RSCN handling
1752 */
1753 void
1754 lpfc_set_disctmo(struct lpfc_vport *vport)
1755 {
1756 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1757 struct lpfc_hba *phba = vport->phba;
1758 uint32_t tmo;
1759
1760 if (vport->port_state == LPFC_LOCAL_CFG_LINK) {
1761 /* For FAN, timeout should be greater then edtov */
1762 tmo = (((phba->fc_edtov + 999) / 1000) + 1);
1763 } else {
1764 /* Normal discovery timeout should be > then ELS/CT timeout
1765 * FC spec states we need 3 * ratov for CT requests
1766 */
1767 tmo = ((phba->fc_ratov * 3) + 3);
1768 }
1769
1770
1771 if (!timer_pending(&vport->fc_disctmo)) {
1772 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
1773 "set disc timer: tmo:x%x state:x%x flg:x%x",
1774 tmo, vport->port_state, vport->fc_flag);
1775 }
1776
1777 mod_timer(&vport->fc_disctmo, jiffies + HZ * tmo);
1778 spin_lock_irq(shost->host_lock);
1779 vport->fc_flag |= FC_DISC_TMO;
1780 spin_unlock_irq(shost->host_lock);
1781
1782 /* Start Discovery Timer state <hba_state> */
1783 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
1784 "0247 Start Discovery Timer state x%x "
1785 "Data: x%x x%lx x%x x%x\n",
1786 vport->port_state, tmo,
1787 (unsigned long)&vport->fc_disctmo, vport->fc_plogi_cnt,
1788 vport->fc_adisc_cnt);
1789
1790 return;
1791 }
1792
1793 /*
1794 * Cancel rescue timer for Discovery / RSCN handling
1795 */
1796 int
1797 lpfc_can_disctmo(struct lpfc_vport *vport)
1798 {
1799 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1800 unsigned long iflags;
1801
1802 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
1803 "can disc timer: state:x%x rtry:x%x flg:x%x",
1804 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
1805
1806 /* Turn off discovery timer if its running */
1807 if (vport->fc_flag & FC_DISC_TMO) {
1808 spin_lock_irqsave(shost->host_lock, iflags);
1809 vport->fc_flag &= ~FC_DISC_TMO;
1810 spin_unlock_irqrestore(shost->host_lock, iflags);
1811 del_timer_sync(&vport->fc_disctmo);
1812 spin_lock_irqsave(&vport->work_port_lock, iflags);
1813 vport->work_port_events &= ~WORKER_DISC_TMO;
1814 spin_unlock_irqrestore(&vport->work_port_lock, iflags);
1815 }
1816
1817 /* Cancel Discovery Timer state <hba_state> */
1818 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
1819 "0248 Cancel Discovery Timer state x%x "
1820 "Data: x%x x%x x%x\n",
1821 vport->port_state, vport->fc_flag,
1822 vport->fc_plogi_cnt, vport->fc_adisc_cnt);
1823 return 0;
1824 }
1825
1826 /*
1827 * Check specified ring for outstanding IOCB on the SLI queue
1828 * Return true if iocb matches the specified nport
1829 */
1830 int
1831 lpfc_check_sli_ndlp(struct lpfc_hba *phba,
1832 struct lpfc_sli_ring *pring,
1833 struct lpfc_iocbq *iocb,
1834 struct lpfc_nodelist *ndlp)
1835 {
1836 struct lpfc_sli *psli = &phba->sli;
1837 IOCB_t *icmd = &iocb->iocb;
1838 struct lpfc_vport *vport = ndlp->vport;
1839
1840 if (iocb->vport != vport)
1841 return 0;
1842
1843 if (pring->ringno == LPFC_ELS_RING) {
1844 switch (icmd->ulpCommand) {
1845 case CMD_GEN_REQUEST64_CR:
1846 if (icmd->ulpContext == (volatile ushort)ndlp->nlp_rpi)
1847 return 1;
1848 case CMD_ELS_REQUEST64_CR:
1849 if (icmd->un.elsreq64.remoteID == ndlp->nlp_DID)
1850 return 1;
1851 case CMD_XMIT_ELS_RSP64_CX:
1852 if (iocb->context1 == (uint8_t *) ndlp)
1853 return 1;
1854 }
1855 } else if (pring->ringno == psli->extra_ring) {
1856
1857 } else if (pring->ringno == psli->fcp_ring) {
1858 /* Skip match check if waiting to relogin to FCP target */
1859 if ((ndlp->nlp_type & NLP_FCP_TARGET) &&
1860 (ndlp->nlp_flag & NLP_DELAY_TMO)) {
1861 return 0;
1862 }
1863 if (icmd->ulpContext == (volatile ushort)ndlp->nlp_rpi) {
1864 return 1;
1865 }
1866 } else if (pring->ringno == psli->next_ring) {
1867
1868 }
1869 return 0;
1870 }
1871
1872 /*
1873 * Free resources / clean up outstanding I/Os
1874 * associated with nlp_rpi in the LPFC_NODELIST entry.
1875 */
1876 static int
1877 lpfc_no_rpi(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
1878 {
1879 LIST_HEAD(completions);
1880 struct lpfc_sli *psli;
1881 struct lpfc_sli_ring *pring;
1882 struct lpfc_iocbq *iocb, *next_iocb;
1883 IOCB_t *icmd;
1884 uint32_t rpi, i;
1885
1886 lpfc_fabric_abort_nport(ndlp);
1887
1888 /*
1889 * Everything that matches on txcmplq will be returned
1890 * by firmware with a no rpi error.
1891 */
1892 psli = &phba->sli;
1893 rpi = ndlp->nlp_rpi;
1894 if (rpi) {
1895 /* Now process each ring */
1896 for (i = 0; i < psli->num_rings; i++) {
1897 pring = &psli->ring[i];
1898
1899 spin_lock_irq(&phba->hbalock);
1900 list_for_each_entry_safe(iocb, next_iocb, &pring->txq,
1901 list) {
1902 /*
1903 * Check to see if iocb matches the nport we are
1904 * looking for
1905 */
1906 if ((lpfc_check_sli_ndlp(phba, pring, iocb,
1907 ndlp))) {
1908 /* It matches, so deque and call compl
1909 with an error */
1910 list_move_tail(&iocb->list,
1911 &completions);
1912 pring->txq_cnt--;
1913 }
1914 }
1915 spin_unlock_irq(&phba->hbalock);
1916 }
1917 }
1918
1919 while (!list_empty(&completions)) {
1920 iocb = list_get_first(&completions, struct lpfc_iocbq, list);
1921 list_del_init(&iocb->list);
1922
1923 if (!iocb->iocb_cmpl)
1924 lpfc_sli_release_iocbq(phba, iocb);
1925 else {
1926 icmd = &iocb->iocb;
1927 icmd->ulpStatus = IOSTAT_LOCAL_REJECT;
1928 icmd->un.ulpWord[4] = IOERR_SLI_ABORTED;
1929 (iocb->iocb_cmpl)(phba, iocb, iocb);
1930 }
1931 }
1932
1933 return 0;
1934 }
1935
1936 /*
1937 * Free rpi associated with LPFC_NODELIST entry.
1938 * This routine is called from lpfc_freenode(), when we are removing
1939 * a LPFC_NODELIST entry. It is also called if the driver initiates a
1940 * LOGO that completes successfully, and we are waiting to PLOGI back
1941 * to the remote NPort. In addition, it is called after we receive
1942 * and unsolicated ELS cmd, send back a rsp, the rsp completes and
1943 * we are waiting to PLOGI back to the remote NPort.
1944 */
1945 int
1946 lpfc_unreg_rpi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
1947 {
1948 struct lpfc_hba *phba = vport->phba;
1949 LPFC_MBOXQ_t *mbox;
1950 int rc;
1951
1952 if (ndlp->nlp_rpi) {
1953 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1954 if (mbox) {
1955 lpfc_unreg_login(phba, vport->vpi, ndlp->nlp_rpi, mbox);
1956 mbox->vport = vport;
1957 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1958 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
1959 if (rc == MBX_NOT_FINISHED)
1960 mempool_free(mbox, phba->mbox_mem_pool);
1961 }
1962 lpfc_no_rpi(phba, ndlp);
1963 ndlp->nlp_rpi = 0;
1964 return 1;
1965 }
1966 return 0;
1967 }
1968
1969 void
1970 lpfc_unreg_all_rpis(struct lpfc_vport *vport)
1971 {
1972 struct lpfc_hba *phba = vport->phba;
1973 LPFC_MBOXQ_t *mbox;
1974 int rc;
1975
1976 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1977 if (mbox) {
1978 lpfc_unreg_login(phba, vport->vpi, 0xffff, mbox);
1979 mbox->vport = vport;
1980 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1981 mbox->context1 = NULL;
1982 rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO);
1983 if (rc == MBX_NOT_FINISHED) {
1984 mempool_free(mbox, phba->mbox_mem_pool);
1985 }
1986 }
1987 }
1988
1989 void
1990 lpfc_unreg_default_rpis(struct lpfc_vport *vport)
1991 {
1992 struct lpfc_hba *phba = vport->phba;
1993 LPFC_MBOXQ_t *mbox;
1994 int rc;
1995
1996 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1997 if (mbox) {
1998 lpfc_unreg_did(phba, vport->vpi, 0xffffffff, mbox);
1999 mbox->vport = vport;
2000 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
2001 mbox->context1 = NULL;
2002 rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO);
2003 if (rc == MBX_NOT_FINISHED) {
2004 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX | LOG_VPORT,
2005 "1815 Could not issue "
2006 "unreg_did (default rpis)\n");
2007 mempool_free(mbox, phba->mbox_mem_pool);
2008 }
2009 }
2010 }
2011
2012 /*
2013 * Free resources associated with LPFC_NODELIST entry
2014 * so it can be freed.
2015 */
2016 static int
2017 lpfc_cleanup_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
2018 {
2019 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2020 struct lpfc_hba *phba = vport->phba;
2021 LPFC_MBOXQ_t *mb, *nextmb;
2022 struct lpfc_dmabuf *mp;
2023
2024 /* Cleanup node for NPort <nlp_DID> */
2025 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
2026 "0900 Cleanup node for NPort x%x "
2027 "Data: x%x x%x x%x\n",
2028 ndlp->nlp_DID, ndlp->nlp_flag,
2029 ndlp->nlp_state, ndlp->nlp_rpi);
2030 if (NLP_CHK_FREE_REQ(ndlp)) {
2031 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE,
2032 "0280 lpfc_cleanup_node: ndlp:x%p "
2033 "usgmap:x%x refcnt:%d\n",
2034 (void *)ndlp, ndlp->nlp_usg_map,
2035 atomic_read(&ndlp->kref.refcount));
2036 lpfc_dequeue_node(vport, ndlp);
2037 } else {
2038 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE,
2039 "0281 lpfc_cleanup_node: ndlp:x%p "
2040 "usgmap:x%x refcnt:%d\n",
2041 (void *)ndlp, ndlp->nlp_usg_map,
2042 atomic_read(&ndlp->kref.refcount));
2043 lpfc_disable_node(vport, ndlp);
2044 }
2045
2046 /* cleanup any ndlp on mbox q waiting for reglogin cmpl */
2047 if ((mb = phba->sli.mbox_active)) {
2048 if ((mb->mb.mbxCommand == MBX_REG_LOGIN64) &&
2049 (ndlp == (struct lpfc_nodelist *) mb->context2)) {
2050 mb->context2 = NULL;
2051 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
2052 }
2053 }
2054
2055 spin_lock_irq(&phba->hbalock);
2056 list_for_each_entry_safe(mb, nextmb, &phba->sli.mboxq, list) {
2057 if ((mb->mb.mbxCommand == MBX_REG_LOGIN64) &&
2058 (ndlp == (struct lpfc_nodelist *) mb->context2)) {
2059 mp = (struct lpfc_dmabuf *) (mb->context1);
2060 if (mp) {
2061 __lpfc_mbuf_free(phba, mp->virt, mp->phys);
2062 kfree(mp);
2063 }
2064 list_del(&mb->list);
2065 mempool_free(mb, phba->mbox_mem_pool);
2066 /* We shall not invoke the lpfc_nlp_put to decrement
2067 * the ndlp reference count as we are in the process
2068 * of lpfc_nlp_release.
2069 */
2070 }
2071 }
2072 spin_unlock_irq(&phba->hbalock);
2073
2074 lpfc_els_abort(phba, ndlp);
2075
2076 spin_lock_irq(shost->host_lock);
2077 ndlp->nlp_flag &= ~NLP_DELAY_TMO;
2078 spin_unlock_irq(shost->host_lock);
2079
2080 ndlp->nlp_last_elscmd = 0;
2081 del_timer_sync(&ndlp->nlp_delayfunc);
2082
2083 list_del_init(&ndlp->els_retry_evt.evt_listp);
2084 list_del_init(&ndlp->dev_loss_evt.evt_listp);
2085
2086 lpfc_unreg_rpi(vport, ndlp);
2087
2088 return 0;
2089 }
2090
2091 /*
2092 * Check to see if we can free the nlp back to the freelist.
2093 * If we are in the middle of using the nlp in the discovery state
2094 * machine, defer the free till we reach the end of the state machine.
2095 */
2096 static void
2097 lpfc_nlp_remove(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
2098 {
2099 struct lpfc_hba *phba = vport->phba;
2100 struct lpfc_rport_data *rdata;
2101 LPFC_MBOXQ_t *mbox;
2102 int rc;
2103
2104 lpfc_cancel_retry_delay_tmo(vport, ndlp);
2105 if (ndlp->nlp_flag & NLP_DEFER_RM && !ndlp->nlp_rpi) {
2106 /* For this case we need to cleanup the default rpi
2107 * allocated by the firmware.
2108 */
2109 if ((mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL))
2110 != NULL) {
2111 rc = lpfc_reg_login(phba, vport->vpi, ndlp->nlp_DID,
2112 (uint8_t *) &vport->fc_sparam, mbox, 0);
2113 if (rc) {
2114 mempool_free(mbox, phba->mbox_mem_pool);
2115 }
2116 else {
2117 mbox->mbox_flag |= LPFC_MBX_IMED_UNREG;
2118 mbox->mbox_cmpl = lpfc_mbx_cmpl_dflt_rpi;
2119 mbox->vport = vport;
2120 mbox->context2 = NULL;
2121 rc =lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
2122 if (rc == MBX_NOT_FINISHED) {
2123 mempool_free(mbox, phba->mbox_mem_pool);
2124 }
2125 }
2126 }
2127 }
2128 lpfc_cleanup_node(vport, ndlp);
2129
2130 /*
2131 * We can get here with a non-NULL ndlp->rport because when we
2132 * unregister a rport we don't break the rport/node linkage. So if we
2133 * do, make sure we don't leaving any dangling pointers behind.
2134 */
2135 if (ndlp->rport) {
2136 rdata = ndlp->rport->dd_data;
2137 rdata->pnode = NULL;
2138 ndlp->rport = NULL;
2139 }
2140 }
2141
2142 static int
2143 lpfc_matchdid(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2144 uint32_t did)
2145 {
2146 D_ID mydid, ndlpdid, matchdid;
2147
2148 if (did == Bcast_DID)
2149 return 0;
2150
2151 /* First check for Direct match */
2152 if (ndlp->nlp_DID == did)
2153 return 1;
2154
2155 /* Next check for area/domain identically equals 0 match */
2156 mydid.un.word = vport->fc_myDID;
2157 if ((mydid.un.b.domain == 0) && (mydid.un.b.area == 0)) {
2158 return 0;
2159 }
2160
2161 matchdid.un.word = did;
2162 ndlpdid.un.word = ndlp->nlp_DID;
2163 if (matchdid.un.b.id == ndlpdid.un.b.id) {
2164 if ((mydid.un.b.domain == matchdid.un.b.domain) &&
2165 (mydid.un.b.area == matchdid.un.b.area)) {
2166 if ((ndlpdid.un.b.domain == 0) &&
2167 (ndlpdid.un.b.area == 0)) {
2168 if (ndlpdid.un.b.id)
2169 return 1;
2170 }
2171 return 0;
2172 }
2173
2174 matchdid.un.word = ndlp->nlp_DID;
2175 if ((mydid.un.b.domain == ndlpdid.un.b.domain) &&
2176 (mydid.un.b.area == ndlpdid.un.b.area)) {
2177 if ((matchdid.un.b.domain == 0) &&
2178 (matchdid.un.b.area == 0)) {
2179 if (matchdid.un.b.id)
2180 return 1;
2181 }
2182 }
2183 }
2184 return 0;
2185 }
2186
2187 /* Search for a nodelist entry */
2188 static struct lpfc_nodelist *
2189 __lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did)
2190 {
2191 struct lpfc_nodelist *ndlp;
2192 uint32_t data1;
2193
2194 list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
2195 if (lpfc_matchdid(vport, ndlp, did)) {
2196 data1 = (((uint32_t) ndlp->nlp_state << 24) |
2197 ((uint32_t) ndlp->nlp_xri << 16) |
2198 ((uint32_t) ndlp->nlp_type << 8) |
2199 ((uint32_t) ndlp->nlp_rpi & 0xff));
2200 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
2201 "0929 FIND node DID "
2202 "Data: x%p x%x x%x x%x\n",
2203 ndlp, ndlp->nlp_DID,
2204 ndlp->nlp_flag, data1);
2205 return ndlp;
2206 }
2207 }
2208
2209 /* FIND node did <did> NOT FOUND */
2210 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
2211 "0932 FIND node did x%x NOT FOUND.\n", did);
2212 return NULL;
2213 }
2214
2215 struct lpfc_nodelist *
2216 lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did)
2217 {
2218 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2219 struct lpfc_nodelist *ndlp;
2220
2221 spin_lock_irq(shost->host_lock);
2222 ndlp = __lpfc_findnode_did(vport, did);
2223 spin_unlock_irq(shost->host_lock);
2224 return ndlp;
2225 }
2226
2227 struct lpfc_nodelist *
2228 lpfc_setup_disc_node(struct lpfc_vport *vport, uint32_t did)
2229 {
2230 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2231 struct lpfc_nodelist *ndlp;
2232
2233 ndlp = lpfc_findnode_did(vport, did);
2234 if (!ndlp) {
2235 if ((vport->fc_flag & FC_RSCN_MODE) != 0 &&
2236 lpfc_rscn_payload_check(vport, did) == 0)
2237 return NULL;
2238 ndlp = (struct lpfc_nodelist *)
2239 mempool_alloc(vport->phba->nlp_mem_pool, GFP_KERNEL);
2240 if (!ndlp)
2241 return NULL;
2242 lpfc_nlp_init(vport, ndlp, did);
2243 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2244 spin_lock_irq(shost->host_lock);
2245 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
2246 spin_unlock_irq(shost->host_lock);
2247 return ndlp;
2248 } else if (!NLP_CHK_NODE_ACT(ndlp)) {
2249 ndlp = lpfc_enable_node(vport, ndlp, NLP_STE_NPR_NODE);
2250 if (!ndlp)
2251 return NULL;
2252 spin_lock_irq(shost->host_lock);
2253 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
2254 spin_unlock_irq(shost->host_lock);
2255 return ndlp;
2256 }
2257
2258 if ((vport->fc_flag & FC_RSCN_MODE) &&
2259 !(vport->fc_flag & FC_NDISC_ACTIVE)) {
2260 if (lpfc_rscn_payload_check(vport, did)) {
2261 /* If we've already recieved a PLOGI from this NPort
2262 * we don't need to try to discover it again.
2263 */
2264 if (ndlp->nlp_flag & NLP_RCV_PLOGI)
2265 return NULL;
2266
2267 spin_lock_irq(shost->host_lock);
2268 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
2269 spin_unlock_irq(shost->host_lock);
2270
2271 /* Since this node is marked for discovery,
2272 * delay timeout is not needed.
2273 */
2274 lpfc_cancel_retry_delay_tmo(vport, ndlp);
2275 } else
2276 ndlp = NULL;
2277 } else {
2278 /* If we've already recieved a PLOGI from this NPort,
2279 * or we are already in the process of discovery on it,
2280 * we don't need to try to discover it again.
2281 */
2282 if (ndlp->nlp_state == NLP_STE_ADISC_ISSUE ||
2283 ndlp->nlp_state == NLP_STE_PLOGI_ISSUE ||
2284 ndlp->nlp_flag & NLP_RCV_PLOGI)
2285 return NULL;
2286 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2287 spin_lock_irq(shost->host_lock);
2288 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
2289 spin_unlock_irq(shost->host_lock);
2290 }
2291 return ndlp;
2292 }
2293
2294 /* Build a list of nodes to discover based on the loopmap */
2295 void
2296 lpfc_disc_list_loopmap(struct lpfc_vport *vport)
2297 {
2298 struct lpfc_hba *phba = vport->phba;
2299 int j;
2300 uint32_t alpa, index;
2301
2302 if (!lpfc_is_link_up(phba))
2303 return;
2304
2305 if (phba->fc_topology != TOPOLOGY_LOOP)
2306 return;
2307
2308 /* Check for loop map present or not */
2309 if (phba->alpa_map[0]) {
2310 for (j = 1; j <= phba->alpa_map[0]; j++) {
2311 alpa = phba->alpa_map[j];
2312 if (((vport->fc_myDID & 0xff) == alpa) || (alpa == 0))
2313 continue;
2314 lpfc_setup_disc_node(vport, alpa);
2315 }
2316 } else {
2317 /* No alpamap, so try all alpa's */
2318 for (j = 0; j < FC_MAXLOOP; j++) {
2319 /* If cfg_scan_down is set, start from highest
2320 * ALPA (0xef) to lowest (0x1).
2321 */
2322 if (vport->cfg_scan_down)
2323 index = j;
2324 else
2325 index = FC_MAXLOOP - j - 1;
2326 alpa = lpfcAlpaArray[index];
2327 if ((vport->fc_myDID & 0xff) == alpa)
2328 continue;
2329 lpfc_setup_disc_node(vport, alpa);
2330 }
2331 }
2332 return;
2333 }
2334
2335 void
2336 lpfc_issue_clear_la(struct lpfc_hba *phba, struct lpfc_vport *vport)
2337 {
2338 LPFC_MBOXQ_t *mbox;
2339 struct lpfc_sli *psli = &phba->sli;
2340 struct lpfc_sli_ring *extra_ring = &psli->ring[psli->extra_ring];
2341 struct lpfc_sli_ring *fcp_ring = &psli->ring[psli->fcp_ring];
2342 struct lpfc_sli_ring *next_ring = &psli->ring[psli->next_ring];
2343 int rc;
2344
2345 /*
2346 * if it's not a physical port or if we already send
2347 * clear_la then don't send it.
2348 */
2349 if ((phba->link_state >= LPFC_CLEAR_LA) ||
2350 (vport->port_type != LPFC_PHYSICAL_PORT))
2351 return;
2352
2353 /* Link up discovery */
2354 if ((mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL)) != NULL) {
2355 phba->link_state = LPFC_CLEAR_LA;
2356 lpfc_clear_la(phba, mbox);
2357 mbox->mbox_cmpl = lpfc_mbx_cmpl_clear_la;
2358 mbox->vport = vport;
2359 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
2360 if (rc == MBX_NOT_FINISHED) {
2361 mempool_free(mbox, phba->mbox_mem_pool);
2362 lpfc_disc_flush_list(vport);
2363 extra_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
2364 fcp_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
2365 next_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
2366 phba->link_state = LPFC_HBA_ERROR;
2367 }
2368 }
2369 }
2370
2371 /* Reg_vpi to tell firmware to resume normal operations */
2372 void
2373 lpfc_issue_reg_vpi(struct lpfc_hba *phba, struct lpfc_vport *vport)
2374 {
2375 LPFC_MBOXQ_t *regvpimbox;
2376
2377 regvpimbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2378 if (regvpimbox) {
2379 lpfc_reg_vpi(phba, vport->vpi, vport->fc_myDID, regvpimbox);
2380 regvpimbox->mbox_cmpl = lpfc_mbx_cmpl_reg_vpi;
2381 regvpimbox->vport = vport;
2382 if (lpfc_sli_issue_mbox(phba, regvpimbox, MBX_NOWAIT)
2383 == MBX_NOT_FINISHED) {
2384 mempool_free(regvpimbox, phba->mbox_mem_pool);
2385 }
2386 }
2387 }
2388
2389 /* Start Link up / RSCN discovery on NPR nodes */
2390 void
2391 lpfc_disc_start(struct lpfc_vport *vport)
2392 {
2393 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2394 struct lpfc_hba *phba = vport->phba;
2395 uint32_t num_sent;
2396 uint32_t clear_la_pending;
2397 int did_changed;
2398
2399 if (!lpfc_is_link_up(phba))
2400 return;
2401
2402 if (phba->link_state == LPFC_CLEAR_LA)
2403 clear_la_pending = 1;
2404 else
2405 clear_la_pending = 0;
2406
2407 if (vport->port_state < LPFC_VPORT_READY)
2408 vport->port_state = LPFC_DISC_AUTH;
2409
2410 lpfc_set_disctmo(vport);
2411
2412 if (vport->fc_prevDID == vport->fc_myDID)
2413 did_changed = 0;
2414 else
2415 did_changed = 1;
2416
2417 vport->fc_prevDID = vport->fc_myDID;
2418 vport->num_disc_nodes = 0;
2419
2420 /* Start Discovery state <hba_state> */
2421 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2422 "0202 Start Discovery hba state x%x "
2423 "Data: x%x x%x x%x\n",
2424 vport->port_state, vport->fc_flag, vport->fc_plogi_cnt,
2425 vport->fc_adisc_cnt);
2426
2427 /* First do ADISCs - if any */
2428 num_sent = lpfc_els_disc_adisc(vport);
2429
2430 if (num_sent)
2431 return;
2432
2433 /*
2434 * For SLI3, cmpl_reg_vpi will set port_state to READY, and
2435 * continue discovery.
2436 */
2437 if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
2438 !(vport->fc_flag & FC_PT2PT) &&
2439 !(vport->fc_flag & FC_RSCN_MODE)) {
2440 lpfc_issue_reg_vpi(phba, vport);
2441 return;
2442 }
2443
2444 /*
2445 * For SLI2, we need to set port_state to READY and continue
2446 * discovery.
2447 */
2448 if (vport->port_state < LPFC_VPORT_READY && !clear_la_pending) {
2449 /* If we get here, there is nothing to ADISC */
2450 if (vport->port_type == LPFC_PHYSICAL_PORT)
2451 lpfc_issue_clear_la(phba, vport);
2452
2453 if (!(vport->fc_flag & FC_ABORT_DISCOVERY)) {
2454 vport->num_disc_nodes = 0;
2455 /* go thru NPR nodes and issue ELS PLOGIs */
2456 if (vport->fc_npr_cnt)
2457 lpfc_els_disc_plogi(vport);
2458
2459 if (!vport->num_disc_nodes) {
2460 spin_lock_irq(shost->host_lock);
2461 vport->fc_flag &= ~FC_NDISC_ACTIVE;
2462 spin_unlock_irq(shost->host_lock);
2463 lpfc_can_disctmo(vport);
2464 }
2465 }
2466 vport->port_state = LPFC_VPORT_READY;
2467 } else {
2468 /* Next do PLOGIs - if any */
2469 num_sent = lpfc_els_disc_plogi(vport);
2470
2471 if (num_sent)
2472 return;
2473
2474 if (vport->fc_flag & FC_RSCN_MODE) {
2475 /* Check to see if more RSCNs came in while we
2476 * were processing this one.
2477 */
2478 if ((vport->fc_rscn_id_cnt == 0) &&
2479 (!(vport->fc_flag & FC_RSCN_DISCOVERY))) {
2480 spin_lock_irq(shost->host_lock);
2481 vport->fc_flag &= ~FC_RSCN_MODE;
2482 spin_unlock_irq(shost->host_lock);
2483 lpfc_can_disctmo(vport);
2484 } else
2485 lpfc_els_handle_rscn(vport);
2486 }
2487 }
2488 return;
2489 }
2490
2491 /*
2492 * Ignore completion for all IOCBs on tx and txcmpl queue for ELS
2493 * ring the match the sppecified nodelist.
2494 */
2495 static void
2496 lpfc_free_tx(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
2497 {
2498 LIST_HEAD(completions);
2499 struct lpfc_sli *psli;
2500 IOCB_t *icmd;
2501 struct lpfc_iocbq *iocb, *next_iocb;
2502 struct lpfc_sli_ring *pring;
2503
2504 psli = &phba->sli;
2505 pring = &psli->ring[LPFC_ELS_RING];
2506
2507 /* Error matching iocb on txq or txcmplq
2508 * First check the txq.
2509 */
2510 spin_lock_irq(&phba->hbalock);
2511 list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
2512 if (iocb->context1 != ndlp) {
2513 continue;
2514 }
2515 icmd = &iocb->iocb;
2516 if ((icmd->ulpCommand == CMD_ELS_REQUEST64_CR) ||
2517 (icmd->ulpCommand == CMD_XMIT_ELS_RSP64_CX)) {
2518
2519 list_move_tail(&iocb->list, &completions);
2520 pring->txq_cnt--;
2521 }
2522 }
2523
2524 /* Next check the txcmplq */
2525 list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) {
2526 if (iocb->context1 != ndlp) {
2527 continue;
2528 }
2529 icmd = &iocb->iocb;
2530 if (icmd->ulpCommand == CMD_ELS_REQUEST64_CR ||
2531 icmd->ulpCommand == CMD_XMIT_ELS_RSP64_CX) {
2532 lpfc_sli_issue_abort_iotag(phba, pring, iocb);
2533 }
2534 }
2535 spin_unlock_irq(&phba->hbalock);
2536
2537 while (!list_empty(&completions)) {
2538 iocb = list_get_first(&completions, struct lpfc_iocbq, list);
2539 list_del_init(&iocb->list);
2540
2541 if (!iocb->iocb_cmpl)
2542 lpfc_sli_release_iocbq(phba, iocb);
2543 else {
2544 icmd = &iocb->iocb;
2545 icmd->ulpStatus = IOSTAT_LOCAL_REJECT;
2546 icmd->un.ulpWord[4] = IOERR_SLI_ABORTED;
2547 (iocb->iocb_cmpl) (phba, iocb, iocb);
2548 }
2549 }
2550 }
2551
2552 static void
2553 lpfc_disc_flush_list(struct lpfc_vport *vport)
2554 {
2555 struct lpfc_nodelist *ndlp, *next_ndlp;
2556 struct lpfc_hba *phba = vport->phba;
2557
2558 if (vport->fc_plogi_cnt || vport->fc_adisc_cnt) {
2559 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes,
2560 nlp_listp) {
2561 if (!NLP_CHK_NODE_ACT(ndlp))
2562 continue;
2563 if (ndlp->nlp_state == NLP_STE_PLOGI_ISSUE ||
2564 ndlp->nlp_state == NLP_STE_ADISC_ISSUE) {
2565 lpfc_free_tx(phba, ndlp);
2566 }
2567 }
2568 }
2569 }
2570
2571 void
2572 lpfc_cleanup_discovery_resources(struct lpfc_vport *vport)
2573 {
2574 lpfc_els_flush_rscn(vport);
2575 lpfc_els_flush_cmd(vport);
2576 lpfc_disc_flush_list(vport);
2577 }
2578
2579 /*****************************************************************************/
2580 /*
2581 * NAME: lpfc_disc_timeout
2582 *
2583 * FUNCTION: Fibre Channel driver discovery timeout routine.
2584 *
2585 * EXECUTION ENVIRONMENT: interrupt only
2586 *
2587 * CALLED FROM:
2588 * Timer function
2589 *
2590 * RETURNS:
2591 * none
2592 */
2593 /*****************************************************************************/
2594 void
2595 lpfc_disc_timeout(unsigned long ptr)
2596 {
2597 struct lpfc_vport *vport = (struct lpfc_vport *) ptr;
2598 struct lpfc_hba *phba = vport->phba;
2599 uint32_t tmo_posted;
2600 unsigned long flags = 0;
2601
2602 if (unlikely(!phba))
2603 return;
2604
2605 spin_lock_irqsave(&vport->work_port_lock, flags);
2606 tmo_posted = vport->work_port_events & WORKER_DISC_TMO;
2607 if (!tmo_posted)
2608 vport->work_port_events |= WORKER_DISC_TMO;
2609 spin_unlock_irqrestore(&vport->work_port_lock, flags);
2610
2611 if (!tmo_posted)
2612 lpfc_worker_wake_up(phba);
2613 return;
2614 }
2615
2616 static void
2617 lpfc_disc_timeout_handler(struct lpfc_vport *vport)
2618 {
2619 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2620 struct lpfc_hba *phba = vport->phba;
2621 struct lpfc_sli *psli = &phba->sli;
2622 struct lpfc_nodelist *ndlp, *next_ndlp;
2623 LPFC_MBOXQ_t *initlinkmbox;
2624 int rc, clrlaerr = 0;
2625
2626 if (!(vport->fc_flag & FC_DISC_TMO))
2627 return;
2628
2629 spin_lock_irq(shost->host_lock);
2630 vport->fc_flag &= ~FC_DISC_TMO;
2631 spin_unlock_irq(shost->host_lock);
2632
2633 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
2634 "disc timeout: state:x%x rtry:x%x flg:x%x",
2635 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
2636
2637 switch (vport->port_state) {
2638
2639 case LPFC_LOCAL_CFG_LINK:
2640 /* port_state is identically LPFC_LOCAL_CFG_LINK while waiting for
2641 * FAN
2642 */
2643 /* FAN timeout */
2644 lpfc_printf_vlog(vport, KERN_WARNING, LOG_DISCOVERY,
2645 "0221 FAN timeout\n");
2646 /* Start discovery by sending FLOGI, clean up old rpis */
2647 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes,
2648 nlp_listp) {
2649 if (!NLP_CHK_NODE_ACT(ndlp))
2650 continue;
2651 if (ndlp->nlp_state != NLP_STE_NPR_NODE)
2652 continue;
2653 if (ndlp->nlp_type & NLP_FABRIC) {
2654 /* Clean up the ndlp on Fabric connections */
2655 lpfc_drop_node(vport, ndlp);
2656
2657 } else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) {
2658 /* Fail outstanding IO now since device
2659 * is marked for PLOGI.
2660 */
2661 lpfc_unreg_rpi(vport, ndlp);
2662 }
2663 }
2664 if (vport->port_state != LPFC_FLOGI) {
2665 lpfc_initial_flogi(vport);
2666 return;
2667 }
2668 break;
2669
2670 case LPFC_FDISC:
2671 case LPFC_FLOGI:
2672 /* port_state is identically LPFC_FLOGI while waiting for FLOGI cmpl */
2673 /* Initial FLOGI timeout */
2674 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2675 "0222 Initial %s timeout\n",
2676 vport->vpi ? "FDISC" : "FLOGI");
2677
2678 /* Assume no Fabric and go on with discovery.
2679 * Check for outstanding ELS FLOGI to abort.
2680 */
2681
2682 /* FLOGI failed, so just use loop map to make discovery list */
2683 lpfc_disc_list_loopmap(vport);
2684
2685 /* Start discovery */
2686 lpfc_disc_start(vport);
2687 break;
2688
2689 case LPFC_FABRIC_CFG_LINK:
2690 /* hba_state is identically LPFC_FABRIC_CFG_LINK while waiting for
2691 NameServer login */
2692 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2693 "0223 Timeout while waiting for "
2694 "NameServer login\n");
2695 /* Next look for NameServer ndlp */
2696 ndlp = lpfc_findnode_did(vport, NameServer_DID);
2697 if (ndlp && NLP_CHK_NODE_ACT(ndlp))
2698 lpfc_els_abort(phba, ndlp);
2699
2700 /* ReStart discovery */
2701 goto restart_disc;
2702
2703 case LPFC_NS_QRY:
2704 /* Check for wait for NameServer Rsp timeout */
2705 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2706 "0224 NameServer Query timeout "
2707 "Data: x%x x%x\n",
2708 vport->fc_ns_retry, LPFC_MAX_NS_RETRY);
2709
2710 if (vport->fc_ns_retry < LPFC_MAX_NS_RETRY) {
2711 /* Try it one more time */
2712 vport->fc_ns_retry++;
2713 rc = lpfc_ns_cmd(vport, SLI_CTNS_GID_FT,
2714 vport->fc_ns_retry, 0);
2715 if (rc == 0)
2716 break;
2717 }
2718 vport->fc_ns_retry = 0;
2719
2720 restart_disc:
2721 /*
2722 * Discovery is over.
2723 * set port_state to PORT_READY if SLI2.
2724 * cmpl_reg_vpi will set port_state to READY for SLI3.
2725 */
2726 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
2727 lpfc_issue_reg_vpi(phba, vport);
2728 else { /* NPIV Not enabled */
2729 lpfc_issue_clear_la(phba, vport);
2730 vport->port_state = LPFC_VPORT_READY;
2731 }
2732
2733 /* Setup and issue mailbox INITIALIZE LINK command */
2734 initlinkmbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2735 if (!initlinkmbox) {
2736 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2737 "0206 Device Discovery "
2738 "completion error\n");
2739 phba->link_state = LPFC_HBA_ERROR;
2740 break;
2741 }
2742
2743 lpfc_linkdown(phba);
2744 lpfc_init_link(phba, initlinkmbox, phba->cfg_topology,
2745 phba->cfg_link_speed);
2746 initlinkmbox->mb.un.varInitLnk.lipsr_AL_PA = 0;
2747 initlinkmbox->vport = vport;
2748 initlinkmbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
2749 rc = lpfc_sli_issue_mbox(phba, initlinkmbox, MBX_NOWAIT);
2750 lpfc_set_loopback_flag(phba);
2751 if (rc == MBX_NOT_FINISHED)
2752 mempool_free(initlinkmbox, phba->mbox_mem_pool);
2753
2754 break;
2755
2756 case LPFC_DISC_AUTH:
2757 /* Node Authentication timeout */
2758 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2759 "0227 Node Authentication timeout\n");
2760 lpfc_disc_flush_list(vport);
2761
2762 /*
2763 * set port_state to PORT_READY if SLI2.
2764 * cmpl_reg_vpi will set port_state to READY for SLI3.
2765 */
2766 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
2767 lpfc_issue_reg_vpi(phba, vport);
2768 else { /* NPIV Not enabled */
2769 lpfc_issue_clear_la(phba, vport);
2770 vport->port_state = LPFC_VPORT_READY;
2771 }
2772 break;
2773
2774 case LPFC_VPORT_READY:
2775 if (vport->fc_flag & FC_RSCN_MODE) {
2776 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2777 "0231 RSCN timeout Data: x%x "
2778 "x%x\n",
2779 vport->fc_ns_retry, LPFC_MAX_NS_RETRY);
2780
2781 /* Cleanup any outstanding ELS commands */
2782 lpfc_els_flush_cmd(vport);
2783
2784 lpfc_els_flush_rscn(vport);
2785 lpfc_disc_flush_list(vport);
2786 }
2787 break;
2788
2789 default:
2790 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2791 "0273 Unexpected discovery timeout, "
2792 "vport State x%x\n", vport->port_state);
2793 break;
2794 }
2795
2796 switch (phba->link_state) {
2797 case LPFC_CLEAR_LA:
2798 /* CLEAR LA timeout */
2799 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2800 "0228 CLEAR LA timeout\n");
2801 clrlaerr = 1;
2802 break;
2803
2804 case LPFC_LINK_UP:
2805 lpfc_issue_clear_la(phba, vport);
2806 /* Drop thru */
2807 case LPFC_LINK_UNKNOWN:
2808 case LPFC_WARM_START:
2809 case LPFC_INIT_START:
2810 case LPFC_INIT_MBX_CMDS:
2811 case LPFC_LINK_DOWN:
2812 case LPFC_HBA_ERROR:
2813 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2814 "0230 Unexpected timeout, hba link "
2815 "state x%x\n", phba->link_state);
2816 clrlaerr = 1;
2817 break;
2818
2819 case LPFC_HBA_READY:
2820 break;
2821 }
2822
2823 if (clrlaerr) {
2824 lpfc_disc_flush_list(vport);
2825 psli->ring[(psli->extra_ring)].flag &= ~LPFC_STOP_IOCB_EVENT;
2826 psli->ring[(psli->fcp_ring)].flag &= ~LPFC_STOP_IOCB_EVENT;
2827 psli->ring[(psli->next_ring)].flag &= ~LPFC_STOP_IOCB_EVENT;
2828 vport->port_state = LPFC_VPORT_READY;
2829 }
2830
2831 return;
2832 }
2833
2834 /*
2835 * This routine handles processing a NameServer REG_LOGIN mailbox
2836 * command upon completion. It is setup in the LPFC_MBOXQ
2837 * as the completion routine when the command is
2838 * handed off to the SLI layer.
2839 */
2840 void
2841 lpfc_mbx_cmpl_fdmi_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
2842 {
2843 MAILBOX_t *mb = &pmb->mb;
2844 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
2845 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2;
2846 struct lpfc_vport *vport = pmb->vport;
2847
2848 pmb->context1 = NULL;
2849
2850 ndlp->nlp_rpi = mb->un.varWords[0];
2851 ndlp->nlp_type |= NLP_FABRIC;
2852 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
2853
2854 /*
2855 * Start issuing Fabric-Device Management Interface (FDMI) command to
2856 * 0xfffffa (FDMI well known port) or Delay issuing FDMI command if
2857 * fdmi-on=2 (supporting RPA/hostnmae)
2858 */
2859
2860 if (vport->cfg_fdmi_on == 1)
2861 lpfc_fdmi_cmd(vport, ndlp, SLI_MGMT_DHBA);
2862 else
2863 mod_timer(&vport->fc_fdmitmo, jiffies + HZ * 60);
2864
2865 /* decrement the node reference count held for this callback
2866 * function.
2867 */
2868 lpfc_nlp_put(ndlp);
2869 lpfc_mbuf_free(phba, mp->virt, mp->phys);
2870 kfree(mp);
2871 mempool_free(pmb, phba->mbox_mem_pool);
2872
2873 return;
2874 }
2875
2876 static int
2877 lpfc_filter_by_rpi(struct lpfc_nodelist *ndlp, void *param)
2878 {
2879 uint16_t *rpi = param;
2880
2881 return ndlp->nlp_rpi == *rpi;
2882 }
2883
2884 static int
2885 lpfc_filter_by_wwpn(struct lpfc_nodelist *ndlp, void *param)
2886 {
2887 return memcmp(&ndlp->nlp_portname, param,
2888 sizeof(ndlp->nlp_portname)) == 0;
2889 }
2890
2891 static struct lpfc_nodelist *
2892 __lpfc_find_node(struct lpfc_vport *vport, node_filter filter, void *param)
2893 {
2894 struct lpfc_nodelist *ndlp;
2895
2896 list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
2897 if (filter(ndlp, param))
2898 return ndlp;
2899 }
2900 return NULL;
2901 }
2902
2903 /*
2904 * This routine looks up the ndlp lists for the given RPI. If rpi found it
2905 * returns the node list element pointer else return NULL.
2906 */
2907 struct lpfc_nodelist *
2908 __lpfc_findnode_rpi(struct lpfc_vport *vport, uint16_t rpi)
2909 {
2910 return __lpfc_find_node(vport, lpfc_filter_by_rpi, &rpi);
2911 }
2912
2913 /*
2914 * This routine looks up the ndlp lists for the given WWPN. If WWPN found it
2915 * returns the node element list pointer else return NULL.
2916 */
2917 struct lpfc_nodelist *
2918 lpfc_findnode_wwpn(struct lpfc_vport *vport, struct lpfc_name *wwpn)
2919 {
2920 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2921 struct lpfc_nodelist *ndlp;
2922
2923 spin_lock_irq(shost->host_lock);
2924 ndlp = __lpfc_find_node(vport, lpfc_filter_by_wwpn, wwpn);
2925 spin_unlock_irq(shost->host_lock);
2926 return ndlp;
2927 }
2928
2929 void
2930 lpfc_nlp_init(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2931 uint32_t did)
2932 {
2933 memset(ndlp, 0, sizeof (struct lpfc_nodelist));
2934 INIT_LIST_HEAD(&ndlp->els_retry_evt.evt_listp);
2935 INIT_LIST_HEAD(&ndlp->dev_loss_evt.evt_listp);
2936 init_timer(&ndlp->nlp_delayfunc);
2937 ndlp->nlp_delayfunc.function = lpfc_els_retry_delay;
2938 ndlp->nlp_delayfunc.data = (unsigned long)ndlp;
2939 ndlp->nlp_DID = did;
2940 ndlp->vport = vport;
2941 ndlp->nlp_sid = NLP_NO_SID;
2942 INIT_LIST_HEAD(&ndlp->nlp_listp);
2943 kref_init(&ndlp->kref);
2944 NLP_INT_NODE_ACT(ndlp);
2945
2946 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
2947 "node init: did:x%x",
2948 ndlp->nlp_DID, 0, 0);
2949
2950 return;
2951 }
2952
2953 /* This routine releases all resources associated with a specifc NPort's ndlp
2954 * and mempool_free's the nodelist.
2955 */
2956 static void
2957 lpfc_nlp_release(struct kref *kref)
2958 {
2959 struct lpfc_hba *phba;
2960 unsigned long flags;
2961 struct lpfc_nodelist *ndlp = container_of(kref, struct lpfc_nodelist,
2962 kref);
2963
2964 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
2965 "node release: did:x%x flg:x%x type:x%x",
2966 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
2967
2968 lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE,
2969 "0279 lpfc_nlp_release: ndlp:x%p "
2970 "usgmap:x%x refcnt:%d\n",
2971 (void *)ndlp, ndlp->nlp_usg_map,
2972 atomic_read(&ndlp->kref.refcount));
2973
2974 /* remove ndlp from action. */
2975 lpfc_nlp_remove(ndlp->vport, ndlp);
2976
2977 /* clear the ndlp active flag for all release cases */
2978 phba = ndlp->vport->phba;
2979 spin_lock_irqsave(&phba->ndlp_lock, flags);
2980 NLP_CLR_NODE_ACT(ndlp);
2981 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
2982
2983 /* free ndlp memory for final ndlp release */
2984 if (NLP_CHK_FREE_REQ(ndlp))
2985 mempool_free(ndlp, ndlp->vport->phba->nlp_mem_pool);
2986 }
2987
2988 /* This routine bumps the reference count for a ndlp structure to ensure
2989 * that one discovery thread won't free a ndlp while another discovery thread
2990 * is using it.
2991 */
2992 struct lpfc_nodelist *
2993 lpfc_nlp_get(struct lpfc_nodelist *ndlp)
2994 {
2995 struct lpfc_hba *phba;
2996 unsigned long flags;
2997
2998 if (ndlp) {
2999 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
3000 "node get: did:x%x flg:x%x refcnt:x%x",
3001 ndlp->nlp_DID, ndlp->nlp_flag,
3002 atomic_read(&ndlp->kref.refcount));
3003 /* The check of ndlp usage to prevent incrementing the
3004 * ndlp reference count that is in the process of being
3005 * released.
3006 */
3007 phba = ndlp->vport->phba;
3008 spin_lock_irqsave(&phba->ndlp_lock, flags);
3009 if (!NLP_CHK_NODE_ACT(ndlp) || NLP_CHK_FREE_ACK(ndlp)) {
3010 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
3011 lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_NODE,
3012 "0276 lpfc_nlp_get: ndlp:x%p "
3013 "usgmap:x%x refcnt:%d\n",
3014 (void *)ndlp, ndlp->nlp_usg_map,
3015 atomic_read(&ndlp->kref.refcount));
3016 return NULL;
3017 } else
3018 kref_get(&ndlp->kref);
3019 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
3020 }
3021 return ndlp;
3022 }
3023
3024 /* This routine decrements the reference count for a ndlp structure. If the
3025 * count goes to 0, this indicates the the associated nodelist should be
3026 * freed. Returning 1 indicates the ndlp resource has been released; on the
3027 * other hand, returning 0 indicates the ndlp resource has not been released
3028 * yet.
3029 */
3030 int
3031 lpfc_nlp_put(struct lpfc_nodelist *ndlp)
3032 {
3033 struct lpfc_hba *phba;
3034 unsigned long flags;
3035
3036 if (!ndlp)
3037 return 1;
3038
3039 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
3040 "node put: did:x%x flg:x%x refcnt:x%x",
3041 ndlp->nlp_DID, ndlp->nlp_flag,
3042 atomic_read(&ndlp->kref.refcount));
3043 phba = ndlp->vport->phba;
3044 spin_lock_irqsave(&phba->ndlp_lock, flags);
3045 /* Check the ndlp memory free acknowledge flag to avoid the
3046 * possible race condition that kref_put got invoked again
3047 * after previous one has done ndlp memory free.
3048 */
3049 if (NLP_CHK_FREE_ACK(ndlp)) {
3050 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
3051 lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_NODE,
3052 "0274 lpfc_nlp_put: ndlp:x%p "
3053 "usgmap:x%x refcnt:%d\n",
3054 (void *)ndlp, ndlp->nlp_usg_map,
3055 atomic_read(&ndlp->kref.refcount));
3056 return 1;
3057 }
3058 /* Check the ndlp inactivate log flag to avoid the possible
3059 * race condition that kref_put got invoked again after ndlp
3060 * is already in inactivating state.
3061 */
3062 if (NLP_CHK_IACT_REQ(ndlp)) {
3063 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
3064 lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_NODE,
3065 "0275 lpfc_nlp_put: ndlp:x%p "
3066 "usgmap:x%x refcnt:%d\n",
3067 (void *)ndlp, ndlp->nlp_usg_map,
3068 atomic_read(&ndlp->kref.refcount));
3069 return 1;
3070 }
3071 /* For last put, mark the ndlp usage flags to make sure no
3072 * other kref_get and kref_put on the same ndlp shall get
3073 * in between the process when the final kref_put has been
3074 * invoked on this ndlp.
3075 */
3076 if (atomic_read(&ndlp->kref.refcount) == 1) {
3077 /* Indicate ndlp is put to inactive state. */
3078 NLP_SET_IACT_REQ(ndlp);
3079 /* Acknowledge ndlp memory free has been seen. */
3080 if (NLP_CHK_FREE_REQ(ndlp))
3081 NLP_SET_FREE_ACK(ndlp);
3082 }
3083 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
3084 /* Note, the kref_put returns 1 when decrementing a reference
3085 * count that was 1, it invokes the release callback function,
3086 * but it still left the reference count as 1 (not actually
3087 * performs the last decrementation). Otherwise, it actually
3088 * decrements the reference count and returns 0.
3089 */
3090 return kref_put(&ndlp->kref, lpfc_nlp_release);
3091 }
3092
3093 /* This routine free's the specified nodelist if it is not in use
3094 * by any other discovery thread. This routine returns 1 if the
3095 * ndlp has been freed. A return value of 0 indicates the ndlp is
3096 * not yet been released.
3097 */
3098 int
3099 lpfc_nlp_not_used(struct lpfc_nodelist *ndlp)
3100 {
3101 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
3102 "node not used: did:x%x flg:x%x refcnt:x%x",
3103 ndlp->nlp_DID, ndlp->nlp_flag,
3104 atomic_read(&ndlp->kref.refcount));
3105 if (atomic_read(&ndlp->kref.refcount) == 1)
3106 if (lpfc_nlp_put(ndlp))
3107 return 1;
3108 return 0;
3109 }
Linux kernel - Deliverables
This page took 0.098368 seconds and 6 git commands to generate.