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Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
[linux-2.6/linux-mips/linux-dm7025.git] / drivers / scsi / lpfc / lpfc_hbadisc.c
blob7cb68feb04fd11eb18c9a3e0d487ffe5a3b270a6
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 * A device is normally blocked for rediscovery and unblocked when
94 * devloss timeout happens. In case a vport is removed or driver
95 * unloaded before devloss timeout happens, we need to unblock here.
96 */
97 scsi_target_unblock(&rport->dev);
98 return;
99 }
100
101 /*
102 * This function will be called when dev_loss_tmo fire.
103 */
104 void
105 lpfc_dev_loss_tmo_callbk(struct fc_rport *rport)
106 {
107 struct lpfc_rport_data *rdata;
108 struct lpfc_nodelist * ndlp;
109 struct lpfc_vport *vport;
110 struct lpfc_hba *phba;
111 struct lpfc_work_evt *evtp;
112 int put_node;
113 int put_rport;
114
115 rdata = rport->dd_data;
116 ndlp = rdata->pnode;
117 if (!ndlp || !NLP_CHK_NODE_ACT(ndlp))
118 return;
119
120 vport = ndlp->vport;
121 phba = vport->phba;
122
123 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
124 "rport devlosscb: sid:x%x did:x%x flg:x%x",
125 ndlp->nlp_sid, ndlp->nlp_DID, ndlp->nlp_flag);
126
127 /* Don't defer this if we are in the process of deleting the vport
128 * or unloading the driver. The unload will cleanup the node
129 * appropriately we just need to cleanup the ndlp rport info here.
130 */
131 if (vport->load_flag & FC_UNLOADING) {
132 put_node = rdata->pnode != NULL;
133 put_rport = ndlp->rport != NULL;
134 rdata->pnode = NULL;
135 ndlp->rport = NULL;
136 if (put_node)
137 lpfc_nlp_put(ndlp);
138 if (put_rport)
139 put_device(&rport->dev);
140 return;
141 }
142
143 if (ndlp->nlp_state == NLP_STE_MAPPED_NODE)
144 return;
145
146 evtp = &ndlp->dev_loss_evt;
147
148 if (!list_empty(&evtp->evt_listp))
149 return;
150
151 spin_lock_irq(&phba->hbalock);
152 /* We need to hold the node by incrementing the reference
153 * count until this queued work is done
154 */
155 evtp->evt_arg1 = lpfc_nlp_get(ndlp);
156 evtp->evt = LPFC_EVT_DEV_LOSS;
157 list_add_tail(&evtp->evt_listp, &phba->work_list);
158 if (phba->work_wait)
159 wake_up(phba->work_wait);
160
161 spin_unlock_irq(&phba->hbalock);
162
163 return;
164 }
165
166 /*
167 * This function is called from the worker thread when dev_loss_tmo
168 * expire.
169 */
170 static void
171 lpfc_dev_loss_tmo_handler(struct lpfc_nodelist *ndlp)
172 {
173 struct lpfc_rport_data *rdata;
174 struct fc_rport *rport;
175 struct lpfc_vport *vport;
176 struct lpfc_hba *phba;
177 uint8_t *name;
178 int put_node;
179 int put_rport;
180 int warn_on = 0;
181
182 rport = ndlp->rport;
183
184 if (!rport)
185 return;
186
187 rdata = rport->dd_data;
188 name = (uint8_t *) &ndlp->nlp_portname;
189 vport = ndlp->vport;
190 phba = vport->phba;
191
192 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
193 "rport devlosstmo:did:x%x type:x%x id:x%x",
194 ndlp->nlp_DID, ndlp->nlp_type, rport->scsi_target_id);
195
196 /* Don't defer this if we are in the process of deleting the vport
197 * or unloading the driver. The unload will cleanup the node
198 * appropriately we just need to cleanup the ndlp rport info here.
199 */
200 if (vport->load_flag & FC_UNLOADING) {
201 if (ndlp->nlp_sid != NLP_NO_SID) {
202 /* flush the target */
203 lpfc_sli_abort_iocb(vport,
204 &phba->sli.ring[phba->sli.fcp_ring],
205 ndlp->nlp_sid, 0, LPFC_CTX_TGT);
206 }
207 put_node = rdata->pnode != NULL;
208 put_rport = ndlp->rport != NULL;
209 rdata->pnode = NULL;
210 ndlp->rport = NULL;
211 if (put_node)
212 lpfc_nlp_put(ndlp);
213 if (put_rport)
214 put_device(&rport->dev);
215 return;
216 }
217
218 if (ndlp->nlp_state == NLP_STE_MAPPED_NODE)
219 return;
220
221 if (ndlp->nlp_type & NLP_FABRIC) {
222 /* We will clean up these Nodes in linkup */
223 put_node = rdata->pnode != NULL;
224 put_rport = ndlp->rport != NULL;
225 rdata->pnode = NULL;
226 ndlp->rport = NULL;
227 if (put_node)
228 lpfc_nlp_put(ndlp);
229 if (put_rport)
230 put_device(&rport->dev);
231 return;
232 }
233
234 if (ndlp->nlp_sid != NLP_NO_SID) {
235 warn_on = 1;
236 /* flush the target */
237 lpfc_sli_abort_iocb(vport, &phba->sli.ring[phba->sli.fcp_ring],
238 ndlp->nlp_sid, 0, LPFC_CTX_TGT);
239 }
240 if (vport->load_flag & FC_UNLOADING)
241 warn_on = 0;
242
243 if (warn_on) {
244 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
245 "0203 Devloss timeout on "
246 "WWPN %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
280 void
281 lpfc_worker_wake_up(struct lpfc_hba *phba)
282 {
283 wake_up(phba->work_wait);
284 return;
285 }
286
287 static void
288 lpfc_work_list_done(struct lpfc_hba *phba)
289 {
290 struct lpfc_work_evt *evtp = NULL;
291 struct lpfc_nodelist *ndlp;
292 int free_evt;
293
294 spin_lock_irq(&phba->hbalock);
295 while (!list_empty(&phba->work_list)) {
296 list_remove_head((&phba->work_list), evtp, typeof(*evtp),
297 evt_listp);
298 spin_unlock_irq(&phba->hbalock);
299 free_evt = 1;
300 switch (evtp->evt) {
301 case LPFC_EVT_ELS_RETRY:
302 ndlp = (struct lpfc_nodelist *) (evtp->evt_arg1);
303 lpfc_els_retry_delay_handler(ndlp);
304 free_evt = 0; /* evt is part of ndlp */
305 /* decrement the node reference count held
306 * for this queued work
307 */
308 lpfc_nlp_put(ndlp);
309 break;
310 case LPFC_EVT_DEV_LOSS:
311 ndlp = (struct lpfc_nodelist *)(evtp->evt_arg1);
312 lpfc_dev_loss_tmo_handler(ndlp);
313 free_evt = 0;
314 /* decrement the node reference count held for
315 * this queued work
316 */
317 lpfc_nlp_put(ndlp);
318 break;
319 case LPFC_EVT_ONLINE:
320 if (phba->link_state < LPFC_LINK_DOWN)
321 *(int *) (evtp->evt_arg1) = lpfc_online(phba);
322 else
323 *(int *) (evtp->evt_arg1) = 0;
324 complete((struct completion *)(evtp->evt_arg2));
325 break;
326 case LPFC_EVT_OFFLINE_PREP:
327 if (phba->link_state >= LPFC_LINK_DOWN)
328 lpfc_offline_prep(phba);
329 *(int *)(evtp->evt_arg1) = 0;
330 complete((struct completion *)(evtp->evt_arg2));
331 break;
332 case LPFC_EVT_OFFLINE:
333 lpfc_offline(phba);
334 lpfc_sli_brdrestart(phba);
335 *(int *)(evtp->evt_arg1) =
336 lpfc_sli_brdready(phba, HS_FFRDY | HS_MBRDY);
337 lpfc_unblock_mgmt_io(phba);
338 complete((struct completion *)(evtp->evt_arg2));
339 break;
340 case LPFC_EVT_WARM_START:
341 lpfc_offline(phba);
342 lpfc_reset_barrier(phba);
343 lpfc_sli_brdreset(phba);
344 lpfc_hba_down_post(phba);
345 *(int *)(evtp->evt_arg1) =
346 lpfc_sli_brdready(phba, HS_MBRDY);
347 lpfc_unblock_mgmt_io(phba);
348 complete((struct completion *)(evtp->evt_arg2));
349 break;
350 case LPFC_EVT_KILL:
351 lpfc_offline(phba);
352 *(int *)(evtp->evt_arg1)
353 = (phba->pport->stopped)
354 ? 0 : lpfc_sli_brdkill(phba);
355 lpfc_unblock_mgmt_io(phba);
356 complete((struct completion *)(evtp->evt_arg2));
357 break;
358 }
359 if (free_evt)
360 kfree(evtp);
361 spin_lock_irq(&phba->hbalock);
362 }
363 spin_unlock_irq(&phba->hbalock);
364
365 }
366
367 static void
368 lpfc_work_done(struct lpfc_hba *phba)
369 {
370 struct lpfc_sli_ring *pring;
371 uint32_t ha_copy, status, control, work_port_events;
372 struct lpfc_vport **vports;
373 struct lpfc_vport *vport;
374 int i;
375
376 spin_lock_irq(&phba->hbalock);
377 ha_copy = phba->work_ha;
378 phba->work_ha = 0;
379 spin_unlock_irq(&phba->hbalock);
380
381 if (ha_copy & HA_ERATT)
382 lpfc_handle_eratt(phba);
383
384 if (ha_copy & HA_MBATT)
385 lpfc_sli_handle_mb_event(phba);
386
387 if (ha_copy & HA_LATT)
388 lpfc_handle_latt(phba);
389 vports = lpfc_create_vport_work_array(phba);
390 if (vports != NULL)
391 for(i = 0; i <= phba->max_vpi; i++) {
392 /*
393 * We could have no vports in array if unloading, so if
394 * this happens then just use the pport
395 */
396 if (vports[i] == NULL && i == 0)
397 vport = phba->pport;
398 else
399 vport = vports[i];
400 if (vport == NULL)
401 break;
402 spin_lock_irq(&vport->work_port_lock);
403 work_port_events = vport->work_port_events;
404 vport->work_port_events &= ~work_port_events;
405 spin_unlock_irq(&vport->work_port_lock);
406 if (work_port_events & WORKER_DISC_TMO)
407 lpfc_disc_timeout_handler(vport);
408 if (work_port_events & WORKER_ELS_TMO)
409 lpfc_els_timeout_handler(vport);
410 if (work_port_events & WORKER_HB_TMO)
411 lpfc_hb_timeout_handler(phba);
412 if (work_port_events & WORKER_MBOX_TMO)
413 lpfc_mbox_timeout_handler(phba);
414 if (work_port_events & WORKER_FABRIC_BLOCK_TMO)
415 lpfc_unblock_fabric_iocbs(phba);
416 if (work_port_events & WORKER_FDMI_TMO)
417 lpfc_fdmi_timeout_handler(vport);
418 if (work_port_events & WORKER_RAMP_DOWN_QUEUE)
419 lpfc_ramp_down_queue_handler(phba);
420 if (work_port_events & WORKER_RAMP_UP_QUEUE)
421 lpfc_ramp_up_queue_handler(phba);
422 }
423 lpfc_destroy_vport_work_array(phba, vports);
424
425 pring = &phba->sli.ring[LPFC_ELS_RING];
426 status = (ha_copy & (HA_RXMASK << (4*LPFC_ELS_RING)));
427 status >>= (4*LPFC_ELS_RING);
428 if ((status & HA_RXMASK)
429 || (pring->flag & LPFC_DEFERRED_RING_EVENT)) {
430 if (pring->flag & LPFC_STOP_IOCB_EVENT) {
431 pring->flag |= LPFC_DEFERRED_RING_EVENT;
432 } else {
433 pring->flag &= ~LPFC_DEFERRED_RING_EVENT;
434 lpfc_sli_handle_slow_ring_event(phba, pring,
435 (status &
436 HA_RXMASK));
437 }
438 /*
439 * Turn on Ring interrupts
440 */
441 spin_lock_irq(&phba->hbalock);
442 control = readl(phba->HCregaddr);
443 if (!(control & (HC_R0INT_ENA << LPFC_ELS_RING))) {
444 lpfc_debugfs_slow_ring_trc(phba,
445 "WRK Enable ring: cntl:x%x hacopy:x%x",
446 control, ha_copy, 0);
447
448 control |= (HC_R0INT_ENA << LPFC_ELS_RING);
449 writel(control, phba->HCregaddr);
450 readl(phba->HCregaddr); /* flush */
451 }
452 else {
453 lpfc_debugfs_slow_ring_trc(phba,
454 "WRK Ring ok: cntl:x%x hacopy:x%x",
455 control, ha_copy, 0);
456 }
457 spin_unlock_irq(&phba->hbalock);
458 }
459 lpfc_work_list_done(phba);
460 }
461
462 static int
463 check_work_wait_done(struct lpfc_hba *phba)
464 {
465 struct lpfc_vport *vport;
466 struct lpfc_sli_ring *pring = &phba->sli.ring[LPFC_ELS_RING];
467 int rc = 0;
468
469 spin_lock_irq(&phba->hbalock);
470 list_for_each_entry(vport, &phba->port_list, listentry) {
471 if (vport->work_port_events) {
472 rc = 1;
473 break;
474 }
475 }
476 if (rc || phba->work_ha || (!list_empty(&phba->work_list)) ||
477 kthread_should_stop() || pring->flag & LPFC_DEFERRED_RING_EVENT) {
478 rc = 1;
479 phba->work_found++;
480 } else
481 phba->work_found = 0;
482 spin_unlock_irq(&phba->hbalock);
483 return rc;
484 }
485
486
487 int
488 lpfc_do_work(void *p)
489 {
490 struct lpfc_hba *phba = p;
491 int rc;
492 DECLARE_WAIT_QUEUE_HEAD_ONSTACK(work_waitq);
493
494 set_user_nice(current, -20);
495 phba->work_wait = &work_waitq;
496 phba->work_found = 0;
497
498 while (1) {
499
500 rc = wait_event_interruptible(work_waitq,
501 check_work_wait_done(phba));
502
503 BUG_ON(rc);
504
505 if (kthread_should_stop())
506 break;
507
508 lpfc_work_done(phba);
509
510 /* If there is alot of slow ring work, like during link up
511 * check_work_wait_done() may cause this thread to not give
512 * up the CPU for very long periods of time. This may cause
513 * soft lockups or other problems. To avoid these situations
514 * give up the CPU here after LPFC_MAX_WORKER_ITERATION
515 * consecutive iterations.
516 */
517 if (phba->work_found >= LPFC_MAX_WORKER_ITERATION) {
518 phba->work_found = 0;
519 schedule();
520 }
521 }
522 spin_lock_irq(&phba->hbalock);
523 phba->work_wait = NULL;
524 spin_unlock_irq(&phba->hbalock);
525 return 0;
526 }
527
528 /*
529 * This is only called to handle FC worker events. Since this a rare
530 * occurance, we allocate a struct lpfc_work_evt structure here instead of
531 * embedding it in the IOCB.
532 */
533 int
534 lpfc_workq_post_event(struct lpfc_hba *phba, void *arg1, void *arg2,
535 uint32_t evt)
536 {
537 struct lpfc_work_evt *evtp;
538 unsigned long flags;
539
540 /*
541 * All Mailbox completions and LPFC_ELS_RING rcv ring IOCB events will
542 * be queued to worker thread for processing
543 */
544 evtp = kmalloc(sizeof(struct lpfc_work_evt), GFP_ATOMIC);
545 if (!evtp)
546 return 0;
547
548 evtp->evt_arg1 = arg1;
549 evtp->evt_arg2 = arg2;
550 evtp->evt = evt;
551
552 spin_lock_irqsave(&phba->hbalock, flags);
553 list_add_tail(&evtp->evt_listp, &phba->work_list);
554 if (phba->work_wait)
555 lpfc_worker_wake_up(phba);
556 spin_unlock_irqrestore(&phba->hbalock, flags);
557
558 return 1;
559 }
560
561 void
562 lpfc_cleanup_rpis(struct lpfc_vport *vport, int remove)
563 {
564 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
565 struct lpfc_hba *phba = vport->phba;
566 struct lpfc_nodelist *ndlp, *next_ndlp;
567 int rc;
568
569 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) {
570 if (!NLP_CHK_NODE_ACT(ndlp))
571 continue;
572 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
573 continue;
574 if ((phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN) ||
575 ((vport->port_type == LPFC_NPIV_PORT) &&
576 (ndlp->nlp_DID == NameServer_DID)))
577 lpfc_unreg_rpi(vport, ndlp);
578
579 /* Leave Fabric nodes alone on link down */
580 if (!remove && ndlp->nlp_type & NLP_FABRIC)
581 continue;
582 rc = lpfc_disc_state_machine(vport, ndlp, NULL,
583 remove
584 ? NLP_EVT_DEVICE_RM
585 : NLP_EVT_DEVICE_RECOVERY);
586 }
587 if (phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN) {
588 lpfc_mbx_unreg_vpi(vport);
589 spin_lock_irq(shost->host_lock);
590 vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
591 spin_unlock_irq(shost->host_lock);
592 }
593 }
594
595 void
596 lpfc_port_link_failure(struct lpfc_vport *vport)
597 {
598 /* Cleanup any outstanding RSCN activity */
599 lpfc_els_flush_rscn(vport);
600
601 /* Cleanup any outstanding ELS commands */
602 lpfc_els_flush_cmd(vport);
603
604 lpfc_cleanup_rpis(vport, 0);
605
606 /* Turn off discovery timer if its running */
607 lpfc_can_disctmo(vport);
608 }
609
610 static void
611 lpfc_linkdown_port(struct lpfc_vport *vport)
612 {
613 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
614
615 fc_host_post_event(shost, fc_get_event_number(), FCH_EVT_LINKDOWN, 0);
616
617 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
618 "Link Down: state:x%x rtry:x%x flg:x%x",
619 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
620
621 lpfc_port_link_failure(vport);
622
623 }
624
625 int
626 lpfc_linkdown(struct lpfc_hba *phba)
627 {
628 struct lpfc_vport *vport = phba->pport;
629 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
630 struct lpfc_vport **vports;
631 LPFC_MBOXQ_t *mb;
632 int i;
633
634 if (phba->link_state == LPFC_LINK_DOWN)
635 return 0;
636 spin_lock_irq(&phba->hbalock);
637 if (phba->link_state > LPFC_LINK_DOWN) {
638 phba->link_state = LPFC_LINK_DOWN;
639 phba->pport->fc_flag &= ~FC_LBIT;
640 }
641 spin_unlock_irq(&phba->hbalock);
642 vports = lpfc_create_vport_work_array(phba);
643 if (vports != NULL)
644 for(i = 0; i <= phba->max_vpi && vports[i] != NULL; i++) {
645 /* Issue a LINK DOWN event to all nodes */
646 lpfc_linkdown_port(vports[i]);
647 }
648 lpfc_destroy_vport_work_array(phba, vports);
649 /* Clean up any firmware default rpi's */
650 mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
651 if (mb) {
652 lpfc_unreg_did(phba, 0xffff, 0xffffffff, mb);
653 mb->vport = vport;
654 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
655 if (lpfc_sli_issue_mbox(phba, mb, MBX_NOWAIT)
656 == MBX_NOT_FINISHED) {
657 mempool_free(mb, phba->mbox_mem_pool);
658 }
659 }
660
661 /* Setup myDID for link up if we are in pt2pt mode */
662 if (phba->pport->fc_flag & FC_PT2PT) {
663 phba->pport->fc_myDID = 0;
664 mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
665 if (mb) {
666 lpfc_config_link(phba, mb);
667 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
668 mb->vport = vport;
669 if (lpfc_sli_issue_mbox(phba, mb, MBX_NOWAIT)
670 == MBX_NOT_FINISHED) {
671 mempool_free(mb, phba->mbox_mem_pool);
672 }
673 }
674 spin_lock_irq(shost->host_lock);
675 phba->pport->fc_flag &= ~(FC_PT2PT | FC_PT2PT_PLOGI);
676 spin_unlock_irq(shost->host_lock);
677 }
678
679 return 0;
680 }
681
682 static void
683 lpfc_linkup_cleanup_nodes(struct lpfc_vport *vport)
684 {
685 struct lpfc_nodelist *ndlp;
686
687 list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
688 if (!NLP_CHK_NODE_ACT(ndlp))
689 continue;
690 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
691 continue;
692 if (ndlp->nlp_type & NLP_FABRIC) {
693 /* On Linkup its safe to clean up the ndlp
694 * from Fabric connections.
695 */
696 if (ndlp->nlp_DID != Fabric_DID)
697 lpfc_unreg_rpi(vport, ndlp);
698 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
699 } else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) {
700 /* Fail outstanding IO now since device is
701 * marked for PLOGI.
702 */
703 lpfc_unreg_rpi(vport, ndlp);
704 }
705 }
706 }
707
708 static void
709 lpfc_linkup_port(struct lpfc_vport *vport)
710 {
711 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
712 struct lpfc_hba *phba = vport->phba;
713
714 if ((vport->load_flag & FC_UNLOADING) != 0)
715 return;
716
717 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
718 "Link Up: top:x%x speed:x%x flg:x%x",
719 phba->fc_topology, phba->fc_linkspeed, phba->link_flag);
720
721 /* If NPIV is not enabled, only bring the physical port up */
722 if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
723 (vport != phba->pport))
724 return;
725
726 fc_host_post_event(shost, fc_get_event_number(), FCH_EVT_LINKUP, 0);
727
728 spin_lock_irq(shost->host_lock);
729 vport->fc_flag &= ~(FC_PT2PT | FC_PT2PT_PLOGI | FC_ABORT_DISCOVERY |
730 FC_RSCN_MODE | FC_NLP_MORE | FC_RSCN_DISCOVERY);
731 vport->fc_flag |= FC_NDISC_ACTIVE;
732 vport->fc_ns_retry = 0;
733 spin_unlock_irq(shost->host_lock);
734
735 if (vport->fc_flag & FC_LBIT)
736 lpfc_linkup_cleanup_nodes(vport);
737
738 }
739
740 static int
741 lpfc_linkup(struct lpfc_hba *phba)
742 {
743 struct lpfc_vport **vports;
744 int i;
745
746 phba->link_state = LPFC_LINK_UP;
747
748 /* Unblock fabric iocbs if they are blocked */
749 clear_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags);
750 del_timer_sync(&phba->fabric_block_timer);
751
752 vports = lpfc_create_vport_work_array(phba);
753 if (vports != NULL)
754 for(i = 0; i <= phba->max_vpi && vports[i] != NULL; i++)
755 lpfc_linkup_port(vports[i]);
756 lpfc_destroy_vport_work_array(phba, vports);
757 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
758 lpfc_issue_clear_la(phba, phba->pport);
759
760 return 0;
761 }
762
763 /*
764 * This routine handles processing a CLEAR_LA mailbox
765 * command upon completion. It is setup in the LPFC_MBOXQ
766 * as the completion routine when the command is
767 * handed off to the SLI layer.
768 */
769 static void
770 lpfc_mbx_cmpl_clear_la(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
771 {
772 struct lpfc_vport *vport = pmb->vport;
773 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
774 struct lpfc_sli *psli = &phba->sli;
775 MAILBOX_t *mb = &pmb->mb;
776 uint32_t control;
777
778 /* Since we don't do discovery right now, turn these off here */
779 psli->ring[psli->extra_ring].flag &= ~LPFC_STOP_IOCB_EVENT;
780 psli->ring[psli->fcp_ring].flag &= ~LPFC_STOP_IOCB_EVENT;
781 psli->ring[psli->next_ring].flag &= ~LPFC_STOP_IOCB_EVENT;
782
783 /* Check for error */
784 if ((mb->mbxStatus) && (mb->mbxStatus != 0x1601)) {
785 /* CLEAR_LA mbox error <mbxStatus> state <hba_state> */
786 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
787 "0320 CLEAR_LA mbxStatus error x%x hba "
788 "state x%x\n",
789 mb->mbxStatus, vport->port_state);
790 phba->link_state = LPFC_HBA_ERROR;
791 goto out;
792 }
793
794 if (vport->port_type == LPFC_PHYSICAL_PORT)
795 phba->link_state = LPFC_HBA_READY;
796
797 spin_lock_irq(&phba->hbalock);
798 psli->sli_flag |= LPFC_PROCESS_LA;
799 control = readl(phba->HCregaddr);
800 control |= HC_LAINT_ENA;
801 writel(control, phba->HCregaddr);
802 readl(phba->HCregaddr); /* flush */
803 spin_unlock_irq(&phba->hbalock);
804 mempool_free(pmb, phba->mbox_mem_pool);
805 return;
806
807 out:
808 /* Device Discovery completes */
809 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
810 "0225 Device Discovery completes\n");
811 mempool_free(pmb, phba->mbox_mem_pool);
812
813 spin_lock_irq(shost->host_lock);
814 vport->fc_flag &= ~FC_ABORT_DISCOVERY;
815 spin_unlock_irq(shost->host_lock);
816
817 lpfc_can_disctmo(vport);
818
819 /* turn on Link Attention interrupts */
820
821 spin_lock_irq(&phba->hbalock);
822 psli->sli_flag |= LPFC_PROCESS_LA;
823 control = readl(phba->HCregaddr);
824 control |= HC_LAINT_ENA;
825 writel(control, phba->HCregaddr);
826 readl(phba->HCregaddr); /* flush */
827 spin_unlock_irq(&phba->hbalock);
828
829 return;
830 }
831
832
833 static void
834 lpfc_mbx_cmpl_local_config_link(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
835 {
836 struct lpfc_vport *vport = pmb->vport;
837
838 if (pmb->mb.mbxStatus)
839 goto out;
840
841 mempool_free(pmb, phba->mbox_mem_pool);
842
843 if (phba->fc_topology == TOPOLOGY_LOOP &&
844 vport->fc_flag & FC_PUBLIC_LOOP &&
845 !(vport->fc_flag & FC_LBIT)) {
846 /* Need to wait for FAN - use discovery timer
847 * for timeout. port_state is identically
848 * LPFC_LOCAL_CFG_LINK while waiting for FAN
849 */
850 lpfc_set_disctmo(vport);
851 return;
852 }
853
854 /* Start discovery by sending a FLOGI. port_state is identically
855 * LPFC_FLOGI while waiting for FLOGI cmpl
856 */
857 if (vport->port_state != LPFC_FLOGI) {
858 lpfc_initial_flogi(vport);
859 }
860 return;
861
862 out:
863 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
864 "0306 CONFIG_LINK mbxStatus error x%x "
865 "HBA state x%x\n",
866 pmb->mb.mbxStatus, vport->port_state);
867 mempool_free(pmb, phba->mbox_mem_pool);
868
869 lpfc_linkdown(phba);
870
871 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
872 "0200 CONFIG_LINK bad hba state x%x\n",
873 vport->port_state);
874
875 lpfc_issue_clear_la(phba, vport);
876 return;
877 }
878
879 static void
880 lpfc_mbx_cmpl_read_sparam(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
881 {
882 MAILBOX_t *mb = &pmb->mb;
883 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) pmb->context1;
884 struct lpfc_vport *vport = pmb->vport;
885
886
887 /* Check for error */
888 if (mb->mbxStatus) {
889 /* READ_SPARAM mbox error <mbxStatus> state <hba_state> */
890 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
891 "0319 READ_SPARAM mbxStatus error x%x "
892 "hba state x%x>\n",
893 mb->mbxStatus, vport->port_state);
894 lpfc_linkdown(phba);
895 goto out;
896 }
897
898 memcpy((uint8_t *) &vport->fc_sparam, (uint8_t *) mp->virt,
899 sizeof (struct serv_parm));
900 if (phba->cfg_soft_wwnn)
901 u64_to_wwn(phba->cfg_soft_wwnn,
902 vport->fc_sparam.nodeName.u.wwn);
903 if (phba->cfg_soft_wwpn)
904 u64_to_wwn(phba->cfg_soft_wwpn,
905 vport->fc_sparam.portName.u.wwn);
906 memcpy(&vport->fc_nodename, &vport->fc_sparam.nodeName,
907 sizeof(vport->fc_nodename));
908 memcpy(&vport->fc_portname, &vport->fc_sparam.portName,
909 sizeof(vport->fc_portname));
910 if (vport->port_type == LPFC_PHYSICAL_PORT) {
911 memcpy(&phba->wwnn, &vport->fc_nodename, sizeof(phba->wwnn));
912 memcpy(&phba->wwpn, &vport->fc_portname, sizeof(phba->wwnn));
913 }
914
915 lpfc_mbuf_free(phba, mp->virt, mp->phys);
916 kfree(mp);
917 mempool_free(pmb, phba->mbox_mem_pool);
918 return;
919
920 out:
921 pmb->context1 = NULL;
922 lpfc_mbuf_free(phba, mp->virt, mp->phys);
923 kfree(mp);
924 lpfc_issue_clear_la(phba, vport);
925 mempool_free(pmb, phba->mbox_mem_pool);
926 return;
927 }
928
929 static void
930 lpfc_mbx_process_link_up(struct lpfc_hba *phba, READ_LA_VAR *la)
931 {
932 struct lpfc_vport *vport = phba->pport;
933 LPFC_MBOXQ_t *sparam_mbox, *cfglink_mbox;
934 int i;
935 struct lpfc_dmabuf *mp;
936 int rc;
937
938 sparam_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
939 cfglink_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
940
941 spin_lock_irq(&phba->hbalock);
942 switch (la->UlnkSpeed) {
943 case LA_1GHZ_LINK:
944 phba->fc_linkspeed = LA_1GHZ_LINK;
945 break;
946 case LA_2GHZ_LINK:
947 phba->fc_linkspeed = LA_2GHZ_LINK;
948 break;
949 case LA_4GHZ_LINK:
950 phba->fc_linkspeed = LA_4GHZ_LINK;
951 break;
952 case LA_8GHZ_LINK:
953 phba->fc_linkspeed = LA_8GHZ_LINK;
954 break;
955 default:
956 phba->fc_linkspeed = LA_UNKNW_LINK;
957 break;
958 }
959
960 phba->fc_topology = la->topology;
961 phba->link_flag &= ~LS_NPIV_FAB_SUPPORTED;
962
963 if (phba->fc_topology == TOPOLOGY_LOOP) {
964 phba->sli3_options &= ~LPFC_SLI3_NPIV_ENABLED;
965
966 /* Get Loop Map information */
967 if (la->il)
968 vport->fc_flag |= FC_LBIT;
969
970 vport->fc_myDID = la->granted_AL_PA;
971 i = la->un.lilpBde64.tus.f.bdeSize;
972
973 if (i == 0) {
974 phba->alpa_map[0] = 0;
975 } else {
976 if (vport->cfg_log_verbose & LOG_LINK_EVENT) {
977 int numalpa, j, k;
978 union {
979 uint8_t pamap[16];
980 struct {
981 uint32_t wd1;
982 uint32_t wd2;
983 uint32_t wd3;
984 uint32_t wd4;
985 } pa;
986 } un;
987 numalpa = phba->alpa_map[0];
988 j = 0;
989 while (j < numalpa) {
990 memset(un.pamap, 0, 16);
991 for (k = 1; j < numalpa; k++) {
992 un.pamap[k - 1] =
993 phba->alpa_map[j + 1];
994 j++;
995 if (k == 16)
996 break;
997 }
998 /* Link Up Event ALPA map */
999 lpfc_printf_log(phba,
1000 KERN_WARNING,
1001 LOG_LINK_EVENT,
1002 "1304 Link Up Event "
1003 "ALPA map Data: x%x "
1004 "x%x x%x x%x\n",
1005 un.pa.wd1, un.pa.wd2,
1006 un.pa.wd3, un.pa.wd4);
1007 }
1008 }
1009 }
1010 } else {
1011 if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)) {
1012 if (phba->max_vpi && phba->cfg_enable_npiv &&
1013 (phba->sli_rev == 3))
1014 phba->sli3_options |= LPFC_SLI3_NPIV_ENABLED;
1015 }
1016 vport->fc_myDID = phba->fc_pref_DID;
1017 vport->fc_flag |= FC_LBIT;
1018 }
1019 spin_unlock_irq(&phba->hbalock);
1020
1021 lpfc_linkup(phba);
1022 if (sparam_mbox) {
1023 lpfc_read_sparam(phba, sparam_mbox, 0);
1024 sparam_mbox->vport = vport;
1025 sparam_mbox->mbox_cmpl = lpfc_mbx_cmpl_read_sparam;
1026 rc = lpfc_sli_issue_mbox(phba, sparam_mbox, MBX_NOWAIT);
1027 if (rc == MBX_NOT_FINISHED) {
1028 mp = (struct lpfc_dmabuf *) sparam_mbox->context1;
1029 lpfc_mbuf_free(phba, mp->virt, mp->phys);
1030 kfree(mp);
1031 mempool_free(sparam_mbox, phba->mbox_mem_pool);
1032 if (cfglink_mbox)
1033 mempool_free(cfglink_mbox, phba->mbox_mem_pool);
1034 goto out;
1035 }
1036 }
1037
1038 if (cfglink_mbox) {
1039 vport->port_state = LPFC_LOCAL_CFG_LINK;
1040 lpfc_config_link(phba, cfglink_mbox);
1041 cfglink_mbox->vport = vport;
1042 cfglink_mbox->mbox_cmpl = lpfc_mbx_cmpl_local_config_link;
1043 rc = lpfc_sli_issue_mbox(phba, cfglink_mbox, MBX_NOWAIT);
1044 if (rc != MBX_NOT_FINISHED)
1045 return;
1046 mempool_free(cfglink_mbox, phba->mbox_mem_pool);
1047 }
1048 out:
1049 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
1050 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
1051 "0263 Discovery Mailbox error: state: 0x%x : %p %p\n",
1052 vport->port_state, sparam_mbox, cfglink_mbox);
1053 lpfc_issue_clear_la(phba, vport);
1054 return;
1055 }
1056
1057 static void
1058 lpfc_mbx_issue_link_down(struct lpfc_hba *phba)
1059 {
1060 uint32_t control;
1061 struct lpfc_sli *psli = &phba->sli;
1062
1063 lpfc_linkdown(phba);
1064
1065 /* turn on Link Attention interrupts - no CLEAR_LA needed */
1066 spin_lock_irq(&phba->hbalock);
1067 psli->sli_flag |= LPFC_PROCESS_LA;
1068 control = readl(phba->HCregaddr);
1069 control |= HC_LAINT_ENA;
1070 writel(control, phba->HCregaddr);
1071 readl(phba->HCregaddr); /* flush */
1072 spin_unlock_irq(&phba->hbalock);
1073 }
1074
1075 /*
1076 * This routine handles processing a READ_LA mailbox
1077 * command upon completion. It is setup in the LPFC_MBOXQ
1078 * as the completion routine when the command is
1079 * handed off to the SLI layer.
1080 */
1081 void
1082 lpfc_mbx_cmpl_read_la(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1083 {
1084 struct lpfc_vport *vport = pmb->vport;
1085 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1086 READ_LA_VAR *la;
1087 MAILBOX_t *mb = &pmb->mb;
1088 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
1089
1090 /* Check for error */
1091 if (mb->mbxStatus) {
1092 lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT,
1093 "1307 READ_LA mbox error x%x state x%x\n",
1094 mb->mbxStatus, vport->port_state);
1095 lpfc_mbx_issue_link_down(phba);
1096 phba->link_state = LPFC_HBA_ERROR;
1097 goto lpfc_mbx_cmpl_read_la_free_mbuf;
1098 }
1099
1100 la = (READ_LA_VAR *) & pmb->mb.un.varReadLA;
1101
1102 memcpy(&phba->alpa_map[0], mp->virt, 128);
1103
1104 spin_lock_irq(shost->host_lock);
1105 if (la->pb)
1106 vport->fc_flag |= FC_BYPASSED_MODE;
1107 else
1108 vport->fc_flag &= ~FC_BYPASSED_MODE;
1109 spin_unlock_irq(shost->host_lock);
1110
1111 if (((phba->fc_eventTag + 1) < la->eventTag) ||
1112 (phba->fc_eventTag == la->eventTag)) {
1113 phba->fc_stat.LinkMultiEvent++;
1114 if (la->attType == AT_LINK_UP)
1115 if (phba->fc_eventTag != 0)
1116 lpfc_linkdown(phba);
1117 }
1118
1119 phba->fc_eventTag = la->eventTag;
1120
1121 if (la->attType == AT_LINK_UP) {
1122 phba->fc_stat.LinkUp++;
1123 if (phba->link_flag & LS_LOOPBACK_MODE) {
1124 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
1125 "1306 Link Up Event in loop back mode "
1126 "x%x received Data: x%x x%x x%x x%x\n",
1127 la->eventTag, phba->fc_eventTag,
1128 la->granted_AL_PA, la->UlnkSpeed,
1129 phba->alpa_map[0]);
1130 } else {
1131 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
1132 "1303 Link Up Event x%x received "
1133 "Data: x%x x%x x%x x%x\n",
1134 la->eventTag, phba->fc_eventTag,
1135 la->granted_AL_PA, la->UlnkSpeed,
1136 phba->alpa_map[0]);
1137 }
1138 lpfc_mbx_process_link_up(phba, la);
1139 } else {
1140 phba->fc_stat.LinkDown++;
1141 if (phba->link_flag & LS_LOOPBACK_MODE) {
1142 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
1143 "1308 Link Down Event in loop back mode "
1144 "x%x received "
1145 "Data: x%x x%x x%x\n",
1146 la->eventTag, phba->fc_eventTag,
1147 phba->pport->port_state, vport->fc_flag);
1148 }
1149 else {
1150 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
1151 "1305 Link Down Event x%x received "
1152 "Data: x%x x%x x%x\n",
1153 la->eventTag, phba->fc_eventTag,
1154 phba->pport->port_state, vport->fc_flag);
1155 }
1156 lpfc_mbx_issue_link_down(phba);
1157 }
1158
1159 lpfc_mbx_cmpl_read_la_free_mbuf:
1160 lpfc_mbuf_free(phba, mp->virt, mp->phys);
1161 kfree(mp);
1162 mempool_free(pmb, phba->mbox_mem_pool);
1163 return;
1164 }
1165
1166 /*
1167 * This routine handles processing a REG_LOGIN mailbox
1168 * command upon completion. It is setup in the LPFC_MBOXQ
1169 * as the completion routine when the command is
1170 * handed off to the SLI layer.
1171 */
1172 void
1173 lpfc_mbx_cmpl_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1174 {
1175 struct lpfc_vport *vport = pmb->vport;
1176 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
1177 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2;
1178
1179 pmb->context1 = NULL;
1180
1181 /* Good status, call state machine */
1182 lpfc_disc_state_machine(vport, ndlp, pmb, NLP_EVT_CMPL_REG_LOGIN);
1183 lpfc_mbuf_free(phba, mp->virt, mp->phys);
1184 kfree(mp);
1185 mempool_free(pmb, phba->mbox_mem_pool);
1186 /* decrement the node reference count held for this callback
1187 * function.
1188 */
1189 lpfc_nlp_put(ndlp);
1190
1191 return;
1192 }
1193
1194 static void
1195 lpfc_mbx_cmpl_unreg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1196 {
1197 MAILBOX_t *mb = &pmb->mb;
1198 struct lpfc_vport *vport = pmb->vport;
1199 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1200
1201 switch (mb->mbxStatus) {
1202 case 0x0011:
1203 case 0x0020:
1204 case 0x9700:
1205 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
1206 "0911 cmpl_unreg_vpi, mb status = 0x%x\n",
1207 mb->mbxStatus);
1208 break;
1209 }
1210 vport->unreg_vpi_cmpl = VPORT_OK;
1211 mempool_free(pmb, phba->mbox_mem_pool);
1212 /*
1213 * This shost reference might have been taken at the beginning of
1214 * lpfc_vport_delete()
1215 */
1216 if (vport->load_flag & FC_UNLOADING)
1217 scsi_host_put(shost);
1218 }
1219
1220 void
1221 lpfc_mbx_unreg_vpi(struct lpfc_vport *vport)
1222 {
1223 struct lpfc_hba *phba = vport->phba;
1224 LPFC_MBOXQ_t *mbox;
1225 int rc;
1226
1227 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1228 if (!mbox)
1229 return;
1230
1231 lpfc_unreg_vpi(phba, vport->vpi, mbox);
1232 mbox->vport = vport;
1233 mbox->mbox_cmpl = lpfc_mbx_cmpl_unreg_vpi;
1234 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
1235 if (rc == MBX_NOT_FINISHED) {
1236 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX | LOG_VPORT,
1237 "1800 Could not issue unreg_vpi\n");
1238 mempool_free(mbox, phba->mbox_mem_pool);
1239 vport->unreg_vpi_cmpl = VPORT_ERROR;
1240 }
1241 }
1242
1243 static void
1244 lpfc_mbx_cmpl_reg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1245 {
1246 struct lpfc_vport *vport = pmb->vport;
1247 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1248 MAILBOX_t *mb = &pmb->mb;
1249
1250 switch (mb->mbxStatus) {
1251 case 0x0011:
1252 case 0x9601:
1253 case 0x9602:
1254 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
1255 "0912 cmpl_reg_vpi, mb status = 0x%x\n",
1256 mb->mbxStatus);
1257 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
1258 spin_lock_irq(shost->host_lock);
1259 vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
1260 spin_unlock_irq(shost->host_lock);
1261 vport->fc_myDID = 0;
1262 goto out;
1263 }
1264
1265 vport->num_disc_nodes = 0;
1266 /* go thru NPR list and issue ELS PLOGIs */
1267 if (vport->fc_npr_cnt)
1268 lpfc_els_disc_plogi(vport);
1269
1270 if (!vport->num_disc_nodes) {
1271 spin_lock_irq(shost->host_lock);
1272 vport->fc_flag &= ~FC_NDISC_ACTIVE;
1273 spin_unlock_irq(shost->host_lock);
1274 lpfc_can_disctmo(vport);
1275 }
1276 vport->port_state = LPFC_VPORT_READY;
1277
1278 out:
1279 mempool_free(pmb, phba->mbox_mem_pool);
1280 return;
1281 }
1282
1283 /*
1284 * This routine handles processing a Fabric REG_LOGIN mailbox
1285 * command upon completion. It is setup in the LPFC_MBOXQ
1286 * as the completion routine when the command is
1287 * handed off to the SLI layer.
1288 */
1289 void
1290 lpfc_mbx_cmpl_fabric_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1291 {
1292 struct lpfc_vport *vport = pmb->vport;
1293 MAILBOX_t *mb = &pmb->mb;
1294 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
1295 struct lpfc_nodelist *ndlp;
1296 struct lpfc_vport **vports;
1297 int i;
1298
1299 ndlp = (struct lpfc_nodelist *) pmb->context2;
1300 pmb->context1 = NULL;
1301 pmb->context2 = NULL;
1302 if (mb->mbxStatus) {
1303 lpfc_mbuf_free(phba, mp->virt, mp->phys);
1304 kfree(mp);
1305 mempool_free(pmb, phba->mbox_mem_pool);
1306
1307 if (phba->fc_topology == TOPOLOGY_LOOP) {
1308 /* FLOGI failed, use loop map to make discovery list */
1309 lpfc_disc_list_loopmap(vport);
1310
1311 /* Start discovery */
1312 lpfc_disc_start(vport);
1313 /* Decrement the reference count to ndlp after the
1314 * reference to the ndlp are done.
1315 */
1316 lpfc_nlp_put(ndlp);
1317 return;
1318 }
1319
1320 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
1321 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
1322 "0258 Register Fabric login error: 0x%x\n",
1323 mb->mbxStatus);
1324 /* Decrement the reference count to ndlp after the reference
1325 * to the ndlp are done.
1326 */
1327 lpfc_nlp_put(ndlp);
1328 return;
1329 }
1330
1331 ndlp->nlp_rpi = mb->un.varWords[0];
1332 ndlp->nlp_type |= NLP_FABRIC;
1333 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1334
1335 if (vport->port_state == LPFC_FABRIC_CFG_LINK) {
1336 vports = lpfc_create_vport_work_array(phba);
1337 if (vports != NULL)
1338 for(i = 0;
1339 i <= phba->max_vpi && vports[i] != NULL;
1340 i++) {
1341 if (vports[i]->port_type == LPFC_PHYSICAL_PORT)
1342 continue;
1343 if (phba->fc_topology == TOPOLOGY_LOOP) {
1344 lpfc_vport_set_state(vports[i],
1345 FC_VPORT_LINKDOWN);
1346 continue;
1347 }
1348 if (phba->link_flag & LS_NPIV_FAB_SUPPORTED)
1349 lpfc_initial_fdisc(vports[i]);
1350 else {
1351 lpfc_vport_set_state(vports[i],
1352 FC_VPORT_NO_FABRIC_SUPP);
1353 lpfc_printf_vlog(vport, KERN_ERR,
1354 LOG_ELS,
1355 "0259 No NPIV "
1356 "Fabric support\n");
1357 }
1358 }
1359 lpfc_destroy_vport_work_array(phba, vports);
1360 lpfc_do_scr_ns_plogi(phba, vport);
1361 }
1362
1363 lpfc_mbuf_free(phba, mp->virt, mp->phys);
1364 kfree(mp);
1365 mempool_free(pmb, phba->mbox_mem_pool);
1366
1367 /* Drop the reference count from the mbox at the end after
1368 * all the current reference to the ndlp have been done.
1369 */
1370 lpfc_nlp_put(ndlp);
1371 return;
1372 }
1373
1374 /*
1375 * This routine handles processing a NameServer REG_LOGIN mailbox
1376 * command upon completion. It is setup in the LPFC_MBOXQ
1377 * as the completion routine when the command is
1378 * handed off to the SLI layer.
1379 */
1380 void
1381 lpfc_mbx_cmpl_ns_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1382 {
1383 MAILBOX_t *mb = &pmb->mb;
1384 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
1385 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2;
1386 struct lpfc_vport *vport = pmb->vport;
1387
1388 if (mb->mbxStatus) {
1389 out:
1390 /* decrement the node reference count held for this
1391 * callback function.
1392 */
1393 lpfc_nlp_put(ndlp);
1394 lpfc_mbuf_free(phba, mp->virt, mp->phys);
1395 kfree(mp);
1396 mempool_free(pmb, phba->mbox_mem_pool);
1397
1398 /* If no other thread is using the ndlp, free it */
1399 lpfc_nlp_not_used(ndlp);
1400
1401 if (phba->fc_topology == TOPOLOGY_LOOP) {
1402 /*
1403 * RegLogin failed, use loop map to make discovery
1404 * list
1405 */
1406 lpfc_disc_list_loopmap(vport);
1407
1408 /* Start discovery */
1409 lpfc_disc_start(vport);
1410 return;
1411 }
1412 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
1413 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1414 "0260 Register NameServer error: 0x%x\n",
1415 mb->mbxStatus);
1416 return;
1417 }
1418
1419 pmb->context1 = NULL;
1420
1421 ndlp->nlp_rpi = mb->un.varWords[0];
1422 ndlp->nlp_type |= NLP_FABRIC;
1423 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1424
1425 if (vport->port_state < LPFC_VPORT_READY) {
1426 /* Link up discovery requires Fabric registration. */
1427 lpfc_ns_cmd(vport, SLI_CTNS_RFF_ID, 0, 0); /* Do this first! */
1428 lpfc_ns_cmd(vport, SLI_CTNS_RNN_ID, 0, 0);
1429 lpfc_ns_cmd(vport, SLI_CTNS_RSNN_NN, 0, 0);
1430 lpfc_ns_cmd(vport, SLI_CTNS_RSPN_ID, 0, 0);
1431 lpfc_ns_cmd(vport, SLI_CTNS_RFT_ID, 0, 0);
1432
1433 /* Issue SCR just before NameServer GID_FT Query */
1434 lpfc_issue_els_scr(vport, SCR_DID, 0);
1435 }
1436
1437 vport->fc_ns_retry = 0;
1438 /* Good status, issue CT Request to NameServer */
1439 if (lpfc_ns_cmd(vport, SLI_CTNS_GID_FT, 0, 0)) {
1440 /* Cannot issue NameServer Query, so finish up discovery */
1441 goto out;
1442 }
1443
1444 /* decrement the node reference count held for this
1445 * callback function.
1446 */
1447 lpfc_nlp_put(ndlp);
1448 lpfc_mbuf_free(phba, mp->virt, mp->phys);
1449 kfree(mp);
1450 mempool_free(pmb, phba->mbox_mem_pool);
1451
1452 return;
1453 }
1454
1455 static void
1456 lpfc_register_remote_port(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
1457 {
1458 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1459 struct fc_rport *rport;
1460 struct lpfc_rport_data *rdata;
1461 struct fc_rport_identifiers rport_ids;
1462 struct lpfc_hba *phba = vport->phba;
1463
1464 /* Remote port has reappeared. Re-register w/ FC transport */
1465 rport_ids.node_name = wwn_to_u64(ndlp->nlp_nodename.u.wwn);
1466 rport_ids.port_name = wwn_to_u64(ndlp->nlp_portname.u.wwn);
1467 rport_ids.port_id = ndlp->nlp_DID;
1468 rport_ids.roles = FC_RPORT_ROLE_UNKNOWN;
1469
1470 /*
1471 * We leave our node pointer in rport->dd_data when we unregister a
1472 * FCP target port. But fc_remote_port_add zeros the space to which
1473 * rport->dd_data points. So, if we're reusing a previously
1474 * registered port, drop the reference that we took the last time we
1475 * registered the port.
1476 */
1477 if (ndlp->rport && ndlp->rport->dd_data &&
1478 ((struct lpfc_rport_data *) ndlp->rport->dd_data)->pnode == ndlp)
1479 lpfc_nlp_put(ndlp);
1480
1481 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
1482 "rport add: did:x%x flg:x%x type x%x",
1483 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
1484
1485 ndlp->rport = rport = fc_remote_port_add(shost, 0, &rport_ids);
1486 if (!rport || !get_device(&rport->dev)) {
1487 dev_printk(KERN_WARNING, &phba->pcidev->dev,
1488 "Warning: fc_remote_port_add failed\n");
1489 return;
1490 }
1491
1492 /* initialize static port data */
1493 rport->maxframe_size = ndlp->nlp_maxframe;
1494 rport->supported_classes = ndlp->nlp_class_sup;
1495 rdata = rport->dd_data;
1496 rdata->pnode = lpfc_nlp_get(ndlp);
1497
1498 if (ndlp->nlp_type & NLP_FCP_TARGET)
1499 rport_ids.roles |= FC_RPORT_ROLE_FCP_TARGET;
1500 if (ndlp->nlp_type & NLP_FCP_INITIATOR)
1501 rport_ids.roles |= FC_RPORT_ROLE_FCP_INITIATOR;
1502
1503
1504 if (rport_ids.roles != FC_RPORT_ROLE_UNKNOWN)
1505 fc_remote_port_rolechg(rport, rport_ids.roles);
1506
1507 if ((rport->scsi_target_id != -1) &&
1508 (rport->scsi_target_id < LPFC_MAX_TARGET)) {
1509 ndlp->nlp_sid = rport->scsi_target_id;
1510 }
1511 return;
1512 }
1513
1514 static void
1515 lpfc_unregister_remote_port(struct lpfc_nodelist *ndlp)
1516 {
1517 struct fc_rport *rport = ndlp->rport;
1518
1519 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_RPORT,
1520 "rport delete: did:x%x flg:x%x type x%x",
1521 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
1522
1523 fc_remote_port_delete(rport);
1524
1525 return;
1526 }
1527
1528 static void
1529 lpfc_nlp_counters(struct lpfc_vport *vport, int state, int count)
1530 {
1531 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1532
1533 spin_lock_irq(shost->host_lock);
1534 switch (state) {
1535 case NLP_STE_UNUSED_NODE:
1536 vport->fc_unused_cnt += count;
1537 break;
1538 case NLP_STE_PLOGI_ISSUE:
1539 vport->fc_plogi_cnt += count;
1540 break;
1541 case NLP_STE_ADISC_ISSUE:
1542 vport->fc_adisc_cnt += count;
1543 break;
1544 case NLP_STE_REG_LOGIN_ISSUE:
1545 vport->fc_reglogin_cnt += count;
1546 break;
1547 case NLP_STE_PRLI_ISSUE:
1548 vport->fc_prli_cnt += count;
1549 break;
1550 case NLP_STE_UNMAPPED_NODE:
1551 vport->fc_unmap_cnt += count;
1552 break;
1553 case NLP_STE_MAPPED_NODE:
1554 vport->fc_map_cnt += count;
1555 break;
1556 case NLP_STE_NPR_NODE:
1557 vport->fc_npr_cnt += count;
1558 break;
1559 }
1560 spin_unlock_irq(shost->host_lock);
1561 }
1562
1563 static void
1564 lpfc_nlp_state_cleanup(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1565 int old_state, int new_state)
1566 {
1567 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1568
1569 if (new_state == NLP_STE_UNMAPPED_NODE) {
1570 ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
1571 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE;
1572 ndlp->nlp_type |= NLP_FC_NODE;
1573 }
1574 if (new_state == NLP_STE_MAPPED_NODE)
1575 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE;
1576 if (new_state == NLP_STE_NPR_NODE)
1577 ndlp->nlp_flag &= ~NLP_RCV_PLOGI;
1578
1579 /* Transport interface */
1580 if (ndlp->rport && (old_state == NLP_STE_MAPPED_NODE ||
1581 old_state == NLP_STE_UNMAPPED_NODE)) {
1582 vport->phba->nport_event_cnt++;
1583 lpfc_unregister_remote_port(ndlp);
1584 }
1585
1586 if (new_state == NLP_STE_MAPPED_NODE ||
1587 new_state == NLP_STE_UNMAPPED_NODE) {
1588 vport->phba->nport_event_cnt++;
1589 /*
1590 * Tell the fc transport about the port, if we haven't
1591 * already. If we have, and it's a scsi entity, be
1592 * sure to unblock any attached scsi devices
1593 */
1594 lpfc_register_remote_port(vport, ndlp);
1595 }
1596 /*
1597 * if we added to Mapped list, but the remote port
1598 * registration failed or assigned a target id outside
1599 * our presentable range - move the node to the
1600 * Unmapped List
1601 */
1602 if (new_state == NLP_STE_MAPPED_NODE &&
1603 (!ndlp->rport ||
1604 ndlp->rport->scsi_target_id == -1 ||
1605 ndlp->rport->scsi_target_id >= LPFC_MAX_TARGET)) {
1606 spin_lock_irq(shost->host_lock);
1607 ndlp->nlp_flag |= NLP_TGT_NO_SCSIID;
1608 spin_unlock_irq(shost->host_lock);
1609 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1610 }
1611 }
1612
1613 static char *
1614 lpfc_nlp_state_name(char *buffer, size_t size, int state)
1615 {
1616 static char *states[] = {
1617 [NLP_STE_UNUSED_NODE] = "UNUSED",
1618 [NLP_STE_PLOGI_ISSUE] = "PLOGI",
1619 [NLP_STE_ADISC_ISSUE] = "ADISC",
1620 [NLP_STE_REG_LOGIN_ISSUE] = "REGLOGIN",
1621 [NLP_STE_PRLI_ISSUE] = "PRLI",
1622 [NLP_STE_UNMAPPED_NODE] = "UNMAPPED",
1623 [NLP_STE_MAPPED_NODE] = "MAPPED",
1624 [NLP_STE_NPR_NODE] = "NPR",
1625 };
1626
1627 if (state < NLP_STE_MAX_STATE && states[state])
1628 strlcpy(buffer, states[state], size);
1629 else
1630 snprintf(buffer, size, "unknown (%d)", state);
1631 return buffer;
1632 }
1633
1634 void
1635 lpfc_nlp_set_state(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1636 int state)
1637 {
1638 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1639 int old_state = ndlp->nlp_state;
1640 char name1[16], name2[16];
1641
1642 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
1643 "0904 NPort state transition x%06x, %s -> %s\n",
1644 ndlp->nlp_DID,
1645 lpfc_nlp_state_name(name1, sizeof(name1), old_state),
1646 lpfc_nlp_state_name(name2, sizeof(name2), state));
1647
1648 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
1649 "node statechg did:x%x old:%d ste:%d",
1650 ndlp->nlp_DID, old_state, state);
1651
1652 if (old_state == NLP_STE_NPR_NODE &&
1653 (ndlp->nlp_flag & NLP_DELAY_TMO) != 0 &&
1654 state != NLP_STE_NPR_NODE)
1655 lpfc_cancel_retry_delay_tmo(vport, ndlp);
1656 if (old_state == NLP_STE_UNMAPPED_NODE) {
1657 ndlp->nlp_flag &= ~NLP_TGT_NO_SCSIID;
1658 ndlp->nlp_type &= ~NLP_FC_NODE;
1659 }
1660
1661 if (list_empty(&ndlp->nlp_listp)) {
1662 spin_lock_irq(shost->host_lock);
1663 list_add_tail(&ndlp->nlp_listp, &vport->fc_nodes);
1664 spin_unlock_irq(shost->host_lock);
1665 } else if (old_state)
1666 lpfc_nlp_counters(vport, old_state, -1);
1667
1668 ndlp->nlp_state = state;
1669 lpfc_nlp_counters(vport, state, 1);
1670 lpfc_nlp_state_cleanup(vport, ndlp, old_state, state);
1671 }
1672
1673 void
1674 lpfc_enqueue_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
1675 {
1676 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1677
1678 if (list_empty(&ndlp->nlp_listp)) {
1679 spin_lock_irq(shost->host_lock);
1680 list_add_tail(&ndlp->nlp_listp, &vport->fc_nodes);
1681 spin_unlock_irq(shost->host_lock);
1682 }
1683 }
1684
1685 void
1686 lpfc_dequeue_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
1687 {
1688 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1689
1690 if ((ndlp->nlp_flag & NLP_DELAY_TMO) != 0)
1691 lpfc_cancel_retry_delay_tmo(vport, ndlp);
1692 if (ndlp->nlp_state && !list_empty(&ndlp->nlp_listp))
1693 lpfc_nlp_counters(vport, ndlp->nlp_state, -1);
1694 spin_lock_irq(shost->host_lock);
1695 list_del_init(&ndlp->nlp_listp);
1696 spin_unlock_irq(shost->host_lock);
1697 lpfc_nlp_state_cleanup(vport, ndlp, ndlp->nlp_state,
1698 NLP_STE_UNUSED_NODE);
1699 }
1700
1701 static void
1702 lpfc_disable_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
1703 {
1704 if ((ndlp->nlp_flag & NLP_DELAY_TMO) != 0)
1705 lpfc_cancel_retry_delay_tmo(vport, ndlp);
1706 if (ndlp->nlp_state && !list_empty(&ndlp->nlp_listp))
1707 lpfc_nlp_counters(vport, ndlp->nlp_state, -1);
1708 lpfc_nlp_state_cleanup(vport, ndlp, ndlp->nlp_state,
1709 NLP_STE_UNUSED_NODE);
1710 }
1711
1712 struct lpfc_nodelist *
1713 lpfc_enable_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1714 int state)
1715 {
1716 struct lpfc_hba *phba = vport->phba;
1717 uint32_t did;
1718 unsigned long flags;
1719
1720 if (!ndlp)
1721 return NULL;
1722
1723 spin_lock_irqsave(&phba->ndlp_lock, flags);
1724 /* The ndlp should not be in memory free mode */
1725 if (NLP_CHK_FREE_REQ(ndlp)) {
1726 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
1727 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE,
1728 "0277 lpfc_enable_node: ndlp:x%p "
1729 "usgmap:x%x refcnt:%d\n",
1730 (void *)ndlp, ndlp->nlp_usg_map,
1731 atomic_read(&ndlp->kref.refcount));
1732 return NULL;
1733 }
1734 /* The ndlp should not already be in active mode */
1735 if (NLP_CHK_NODE_ACT(ndlp)) {
1736 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
1737 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE,
1738 "0278 lpfc_enable_node: ndlp:x%p "
1739 "usgmap:x%x refcnt:%d\n",
1740 (void *)ndlp, ndlp->nlp_usg_map,
1741 atomic_read(&ndlp->kref.refcount));
1742 return NULL;
1743 }
1744
1745 /* Keep the original DID */
1746 did = ndlp->nlp_DID;
1747
1748 /* re-initialize ndlp except of ndlp linked list pointer */
1749 memset((((char *)ndlp) + sizeof (struct list_head)), 0,
1750 sizeof (struct lpfc_nodelist) - sizeof (struct list_head));
1751 INIT_LIST_HEAD(&ndlp->els_retry_evt.evt_listp);
1752 INIT_LIST_HEAD(&ndlp->dev_loss_evt.evt_listp);
1753 init_timer(&ndlp->nlp_delayfunc);
1754 ndlp->nlp_delayfunc.function = lpfc_els_retry_delay;
1755 ndlp->nlp_delayfunc.data = (unsigned long)ndlp;
1756 ndlp->nlp_DID = did;
1757 ndlp->vport = vport;
1758 ndlp->nlp_sid = NLP_NO_SID;
1759 /* ndlp management re-initialize */
1760 kref_init(&ndlp->kref);
1761 NLP_INT_NODE_ACT(ndlp);
1762
1763 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
1764
1765 if (state != NLP_STE_UNUSED_NODE)
1766 lpfc_nlp_set_state(vport, ndlp, state);
1767
1768 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
1769 "node enable: did:x%x",
1770 ndlp->nlp_DID, 0, 0);
1771 return ndlp;
1772 }
1773
1774 void
1775 lpfc_drop_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
1776 {
1777 /*
1778 * Use of lpfc_drop_node and UNUSED list: lpfc_drop_node should
1779 * be used if we wish to issue the "last" lpfc_nlp_put() to remove
1780 * the ndlp from the vport. The ndlp marked as UNUSED on the list
1781 * until ALL other outstanding threads have completed. We check
1782 * that the ndlp not already in the UNUSED state before we proceed.
1783 */
1784 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
1785 return;
1786 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNUSED_NODE);
1787 lpfc_nlp_put(ndlp);
1788 return;
1789 }
1790
1791 /*
1792 * Start / ReStart rescue timer for Discovery / RSCN handling
1793 */
1794 void
1795 lpfc_set_disctmo(struct lpfc_vport *vport)
1796 {
1797 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1798 struct lpfc_hba *phba = vport->phba;
1799 uint32_t tmo;
1800
1801 if (vport->port_state == LPFC_LOCAL_CFG_LINK) {
1802 /* For FAN, timeout should be greater then edtov */
1803 tmo = (((phba->fc_edtov + 999) / 1000) + 1);
1804 } else {
1805 /* Normal discovery timeout should be > then ELS/CT timeout
1806 * FC spec states we need 3 * ratov for CT requests
1807 */
1808 tmo = ((phba->fc_ratov * 3) + 3);
1809 }
1810
1811
1812 if (!timer_pending(&vport->fc_disctmo)) {
1813 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
1814 "set disc timer: tmo:x%x state:x%x flg:x%x",
1815 tmo, vport->port_state, vport->fc_flag);
1816 }
1817
1818 mod_timer(&vport->fc_disctmo, jiffies + HZ * tmo);
1819 spin_lock_irq(shost->host_lock);
1820 vport->fc_flag |= FC_DISC_TMO;
1821 spin_unlock_irq(shost->host_lock);
1822
1823 /* Start Discovery Timer state <hba_state> */
1824 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
1825 "0247 Start Discovery Timer state x%x "
1826 "Data: x%x x%lx x%x x%x\n",
1827 vport->port_state, tmo,
1828 (unsigned long)&vport->fc_disctmo, vport->fc_plogi_cnt,
1829 vport->fc_adisc_cnt);
1830
1831 return;
1832 }
1833
1834 /*
1835 * Cancel rescue timer for Discovery / RSCN handling
1836 */
1837 int
1838 lpfc_can_disctmo(struct lpfc_vport *vport)
1839 {
1840 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1841 unsigned long iflags;
1842
1843 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
1844 "can disc timer: state:x%x rtry:x%x flg:x%x",
1845 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
1846
1847 /* Turn off discovery timer if its running */
1848 if (vport->fc_flag & FC_DISC_TMO) {
1849 spin_lock_irqsave(shost->host_lock, iflags);
1850 vport->fc_flag &= ~FC_DISC_TMO;
1851 spin_unlock_irqrestore(shost->host_lock, iflags);
1852 del_timer_sync(&vport->fc_disctmo);
1853 spin_lock_irqsave(&vport->work_port_lock, iflags);
1854 vport->work_port_events &= ~WORKER_DISC_TMO;
1855 spin_unlock_irqrestore(&vport->work_port_lock, iflags);
1856 }
1857
1858 /* Cancel Discovery Timer state <hba_state> */
1859 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
1860 "0248 Cancel Discovery Timer state x%x "
1861 "Data: x%x x%x x%x\n",
1862 vport->port_state, vport->fc_flag,
1863 vport->fc_plogi_cnt, vport->fc_adisc_cnt);
1864 return 0;
1865 }
1866
1867 /*
1868 * Check specified ring for outstanding IOCB on the SLI queue
1869 * Return true if iocb matches the specified nport
1870 */
1871 int
1872 lpfc_check_sli_ndlp(struct lpfc_hba *phba,
1873 struct lpfc_sli_ring *pring,
1874 struct lpfc_iocbq *iocb,
1875 struct lpfc_nodelist *ndlp)
1876 {
1877 struct lpfc_sli *psli = &phba->sli;
1878 IOCB_t *icmd = &iocb->iocb;
1879 struct lpfc_vport *vport = ndlp->vport;
1880
1881 if (iocb->vport != vport)
1882 return 0;
1883
1884 if (pring->ringno == LPFC_ELS_RING) {
1885 switch (icmd->ulpCommand) {
1886 case CMD_GEN_REQUEST64_CR:
1887 if (icmd->ulpContext == (volatile ushort)ndlp->nlp_rpi)
1888 return 1;
1889 case CMD_ELS_REQUEST64_CR:
1890 if (icmd->un.elsreq64.remoteID == ndlp->nlp_DID)
1891 return 1;
1892 case CMD_XMIT_ELS_RSP64_CX:
1893 if (iocb->context1 == (uint8_t *) ndlp)
1894 return 1;
1895 }
1896 } else if (pring->ringno == psli->extra_ring) {
1897
1898 } else if (pring->ringno == psli->fcp_ring) {
1899 /* Skip match check if waiting to relogin to FCP target */
1900 if ((ndlp->nlp_type & NLP_FCP_TARGET) &&
1901 (ndlp->nlp_flag & NLP_DELAY_TMO)) {
1902 return 0;
1903 }
1904 if (icmd->ulpContext == (volatile ushort)ndlp->nlp_rpi) {
1905 return 1;
1906 }
1907 } else if (pring->ringno == psli->next_ring) {
1908
1909 }
1910 return 0;
1911 }
1912
1913 /*
1914 * Free resources / clean up outstanding I/Os
1915 * associated with nlp_rpi in the LPFC_NODELIST entry.
1916 */
1917 static int
1918 lpfc_no_rpi(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
1919 {
1920 LIST_HEAD(completions);
1921 struct lpfc_sli *psli;
1922 struct lpfc_sli_ring *pring;
1923 struct lpfc_iocbq *iocb, *next_iocb;
1924 IOCB_t *icmd;
1925 uint32_t rpi, i;
1926
1927 lpfc_fabric_abort_nport(ndlp);
1928
1929 /*
1930 * Everything that matches on txcmplq will be returned
1931 * by firmware with a no rpi error.
1932 */
1933 psli = &phba->sli;
1934 rpi = ndlp->nlp_rpi;
1935 if (rpi) {
1936 /* Now process each ring */
1937 for (i = 0; i < psli->num_rings; i++) {
1938 pring = &psli->ring[i];
1939
1940 spin_lock_irq(&phba->hbalock);
1941 list_for_each_entry_safe(iocb, next_iocb, &pring->txq,
1942 list) {
1943 /*
1944 * Check to see if iocb matches the nport we are
1945 * looking for
1946 */
1947 if ((lpfc_check_sli_ndlp(phba, pring, iocb,
1948 ndlp))) {
1949 /* It matches, so deque and call compl
1950 with an error */
1951 list_move_tail(&iocb->list,
1952 &completions);
1953 pring->txq_cnt--;
1954 }
1955 }
1956 spin_unlock_irq(&phba->hbalock);
1957 }
1958 }
1959
1960 while (!list_empty(&completions)) {
1961 iocb = list_get_first(&completions, struct lpfc_iocbq, list);
1962 list_del_init(&iocb->list);
1963
1964 if (!iocb->iocb_cmpl)
1965 lpfc_sli_release_iocbq(phba, iocb);
1966 else {
1967 icmd = &iocb->iocb;
1968 icmd->ulpStatus = IOSTAT_LOCAL_REJECT;
1969 icmd->un.ulpWord[4] = IOERR_SLI_ABORTED;
1970 (iocb->iocb_cmpl)(phba, iocb, iocb);
1971 }
1972 }
1973
1974 return 0;
1975 }
1976
1977 /*
1978 * Free rpi associated with LPFC_NODELIST entry.
1979 * This routine is called from lpfc_freenode(), when we are removing
1980 * a LPFC_NODELIST entry. It is also called if the driver initiates a
1981 * LOGO that completes successfully, and we are waiting to PLOGI back
1982 * to the remote NPort. In addition, it is called after we receive
1983 * and unsolicated ELS cmd, send back a rsp, the rsp completes and
1984 * we are waiting to PLOGI back to the remote NPort.
1985 */
1986 int
1987 lpfc_unreg_rpi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
1988 {
1989 struct lpfc_hba *phba = vport->phba;
1990 LPFC_MBOXQ_t *mbox;
1991 int rc;
1992
1993 if (ndlp->nlp_rpi) {
1994 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1995 if (mbox) {
1996 lpfc_unreg_login(phba, vport->vpi, ndlp->nlp_rpi, mbox);
1997 mbox->vport = vport;
1998 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1999 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
2000 if (rc == MBX_NOT_FINISHED)
2001 mempool_free(mbox, phba->mbox_mem_pool);
2002 }
2003 lpfc_no_rpi(phba, ndlp);
2004 ndlp->nlp_rpi = 0;
2005 return 1;
2006 }
2007 return 0;
2008 }
2009
2010 void
2011 lpfc_unreg_all_rpis(struct lpfc_vport *vport)
2012 {
2013 struct lpfc_hba *phba = vport->phba;
2014 LPFC_MBOXQ_t *mbox;
2015 int rc;
2016
2017 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2018 if (mbox) {
2019 lpfc_unreg_login(phba, vport->vpi, 0xffff, mbox);
2020 mbox->vport = vport;
2021 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
2022 mbox->context1 = NULL;
2023 rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO);
2024 if (rc == MBX_NOT_FINISHED) {
2025 mempool_free(mbox, phba->mbox_mem_pool);
2026 }
2027 }
2028 }
2029
2030 void
2031 lpfc_unreg_default_rpis(struct lpfc_vport *vport)
2032 {
2033 struct lpfc_hba *phba = vport->phba;
2034 LPFC_MBOXQ_t *mbox;
2035 int rc;
2036
2037 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2038 if (mbox) {
2039 lpfc_unreg_did(phba, vport->vpi, 0xffffffff, mbox);
2040 mbox->vport = vport;
2041 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
2042 mbox->context1 = NULL;
2043 rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO);
2044 if (rc == MBX_NOT_FINISHED) {
2045 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX | LOG_VPORT,
2046 "1815 Could not issue "
2047 "unreg_did (default rpis)\n");
2048 mempool_free(mbox, phba->mbox_mem_pool);
2049 }
2050 }
2051 }
2052
2053 /*
2054 * Free resources associated with LPFC_NODELIST entry
2055 * so it can be freed.
2056 */
2057 static int
2058 lpfc_cleanup_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
2059 {
2060 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2061 struct lpfc_hba *phba = vport->phba;
2062 LPFC_MBOXQ_t *mb, *nextmb;
2063 struct lpfc_dmabuf *mp;
2064
2065 /* Cleanup node for NPort <nlp_DID> */
2066 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
2067 "0900 Cleanup node for NPort x%x "
2068 "Data: x%x x%x x%x\n",
2069 ndlp->nlp_DID, ndlp->nlp_flag,
2070 ndlp->nlp_state, ndlp->nlp_rpi);
2071 if (NLP_CHK_FREE_REQ(ndlp)) {
2072 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE,
2073 "0280 lpfc_cleanup_node: ndlp:x%p "
2074 "usgmap:x%x refcnt:%d\n",
2075 (void *)ndlp, ndlp->nlp_usg_map,
2076 atomic_read(&ndlp->kref.refcount));
2077 lpfc_dequeue_node(vport, ndlp);
2078 } else {
2079 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE,
2080 "0281 lpfc_cleanup_node: ndlp:x%p "
2081 "usgmap:x%x refcnt:%d\n",
2082 (void *)ndlp, ndlp->nlp_usg_map,
2083 atomic_read(&ndlp->kref.refcount));
2084 lpfc_disable_node(vport, ndlp);
2085 }
2086
2087 /* cleanup any ndlp on mbox q waiting for reglogin cmpl */
2088 if ((mb = phba->sli.mbox_active)) {
2089 if ((mb->mb.mbxCommand == MBX_REG_LOGIN64) &&
2090 (ndlp == (struct lpfc_nodelist *) mb->context2)) {
2091 mb->context2 = NULL;
2092 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
2093 }
2094 }
2095
2096 spin_lock_irq(&phba->hbalock);
2097 list_for_each_entry_safe(mb, nextmb, &phba->sli.mboxq, list) {
2098 if ((mb->mb.mbxCommand == MBX_REG_LOGIN64) &&
2099 (ndlp == (struct lpfc_nodelist *) mb->context2)) {
2100 mp = (struct lpfc_dmabuf *) (mb->context1);
2101 if (mp) {
2102 __lpfc_mbuf_free(phba, mp->virt, mp->phys);
2103 kfree(mp);
2104 }
2105 list_del(&mb->list);
2106 mempool_free(mb, phba->mbox_mem_pool);
2107 /* We shall not invoke the lpfc_nlp_put to decrement
2108 * the ndlp reference count as we are in the process
2109 * of lpfc_nlp_release.
2110 */
2111 }
2112 }
2113 spin_unlock_irq(&phba->hbalock);
2114
2115 lpfc_els_abort(phba, ndlp);
2116
2117 spin_lock_irq(shost->host_lock);
2118 ndlp->nlp_flag &= ~NLP_DELAY_TMO;
2119 spin_unlock_irq(shost->host_lock);
2120
2121 ndlp->nlp_last_elscmd = 0;
2122 del_timer_sync(&ndlp->nlp_delayfunc);
2123
2124 if (!list_empty(&ndlp->els_retry_evt.evt_listp))
2125 list_del_init(&ndlp->els_retry_evt.evt_listp);
2126 if (!list_empty(&ndlp->dev_loss_evt.evt_listp))
2127 list_del_init(&ndlp->dev_loss_evt.evt_listp);
2128
2129 lpfc_unreg_rpi(vport, ndlp);
2130
2131 return 0;
2132 }
2133
2134 /*
2135 * Check to see if we can free the nlp back to the freelist.
2136 * If we are in the middle of using the nlp in the discovery state
2137 * machine, defer the free till we reach the end of the state machine.
2138 */
2139 static void
2140 lpfc_nlp_remove(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
2141 {
2142 struct lpfc_hba *phba = vport->phba;
2143 struct lpfc_rport_data *rdata;
2144 LPFC_MBOXQ_t *mbox;
2145 int rc;
2146
2147 if (ndlp->nlp_flag & NLP_DELAY_TMO) {
2148 lpfc_cancel_retry_delay_tmo(vport, ndlp);
2149 }
2150
2151 if (ndlp->nlp_flag & NLP_DEFER_RM && !ndlp->nlp_rpi) {
2152 /* For this case we need to cleanup the default rpi
2153 * allocated by the firmware.
2154 */
2155 if ((mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL))
2156 != NULL) {
2157 rc = lpfc_reg_login(phba, vport->vpi, ndlp->nlp_DID,
2158 (uint8_t *) &vport->fc_sparam, mbox, 0);
2159 if (rc) {
2160 mempool_free(mbox, phba->mbox_mem_pool);
2161 }
2162 else {
2163 mbox->mbox_flag |= LPFC_MBX_IMED_UNREG;
2164 mbox->mbox_cmpl = lpfc_mbx_cmpl_dflt_rpi;
2165 mbox->vport = vport;
2166 mbox->context2 = NULL;
2167 rc =lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
2168 if (rc == MBX_NOT_FINISHED) {
2169 mempool_free(mbox, phba->mbox_mem_pool);
2170 }
2171 }
2172 }
2173 }
2174 lpfc_cleanup_node(vport, ndlp);
2175
2176 /*
2177 * We can get here with a non-NULL ndlp->rport because when we
2178 * unregister a rport we don't break the rport/node linkage. So if we
2179 * do, make sure we don't leaving any dangling pointers behind.
2180 */
2181 if (ndlp->rport) {
2182 rdata = ndlp->rport->dd_data;
2183 rdata->pnode = NULL;
2184 ndlp->rport = NULL;
2185 }
2186 }
2187
2188 static int
2189 lpfc_matchdid(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2190 uint32_t did)
2191 {
2192 D_ID mydid, ndlpdid, matchdid;
2193
2194 if (did == Bcast_DID)
2195 return 0;
2196
2197 /* First check for Direct match */
2198 if (ndlp->nlp_DID == did)
2199 return 1;
2200
2201 /* Next check for area/domain identically equals 0 match */
2202 mydid.un.word = vport->fc_myDID;
2203 if ((mydid.un.b.domain == 0) && (mydid.un.b.area == 0)) {
2204 return 0;
2205 }
2206
2207 matchdid.un.word = did;
2208 ndlpdid.un.word = ndlp->nlp_DID;
2209 if (matchdid.un.b.id == ndlpdid.un.b.id) {
2210 if ((mydid.un.b.domain == matchdid.un.b.domain) &&
2211 (mydid.un.b.area == matchdid.un.b.area)) {
2212 if ((ndlpdid.un.b.domain == 0) &&
2213 (ndlpdid.un.b.area == 0)) {
2214 if (ndlpdid.un.b.id)
2215 return 1;
2216 }
2217 return 0;
2218 }
2219
2220 matchdid.un.word = ndlp->nlp_DID;
2221 if ((mydid.un.b.domain == ndlpdid.un.b.domain) &&
2222 (mydid.un.b.area == ndlpdid.un.b.area)) {
2223 if ((matchdid.un.b.domain == 0) &&
2224 (matchdid.un.b.area == 0)) {
2225 if (matchdid.un.b.id)
2226 return 1;
2227 }
2228 }
2229 }
2230 return 0;
2231 }
2232
2233 /* Search for a nodelist entry */
2234 static struct lpfc_nodelist *
2235 __lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did)
2236 {
2237 struct lpfc_nodelist *ndlp;
2238 uint32_t data1;
2239
2240 list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
2241 if (lpfc_matchdid(vport, ndlp, did)) {
2242 data1 = (((uint32_t) ndlp->nlp_state << 24) |
2243 ((uint32_t) ndlp->nlp_xri << 16) |
2244 ((uint32_t) ndlp->nlp_type << 8) |
2245 ((uint32_t) ndlp->nlp_rpi & 0xff));
2246 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
2247 "0929 FIND node DID "
2248 "Data: x%p x%x x%x x%x\n",
2249 ndlp, ndlp->nlp_DID,
2250 ndlp->nlp_flag, data1);
2251 return ndlp;
2252 }
2253 }
2254
2255 /* FIND node did <did> NOT FOUND */
2256 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
2257 "0932 FIND node did x%x NOT FOUND.\n", did);
2258 return NULL;
2259 }
2260
2261 struct lpfc_nodelist *
2262 lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did)
2263 {
2264 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2265 struct lpfc_nodelist *ndlp;
2266
2267 spin_lock_irq(shost->host_lock);
2268 ndlp = __lpfc_findnode_did(vport, did);
2269 spin_unlock_irq(shost->host_lock);
2270 return ndlp;
2271 }
2272
2273 struct lpfc_nodelist *
2274 lpfc_setup_disc_node(struct lpfc_vport *vport, uint32_t did)
2275 {
2276 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2277 struct lpfc_nodelist *ndlp;
2278
2279 ndlp = lpfc_findnode_did(vport, did);
2280 if (!ndlp) {
2281 if ((vport->fc_flag & FC_RSCN_MODE) != 0 &&
2282 lpfc_rscn_payload_check(vport, did) == 0)
2283 return NULL;
2284 ndlp = (struct lpfc_nodelist *)
2285 mempool_alloc(vport->phba->nlp_mem_pool, GFP_KERNEL);
2286 if (!ndlp)
2287 return NULL;
2288 lpfc_nlp_init(vport, ndlp, did);
2289 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2290 spin_lock_irq(shost->host_lock);
2291 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
2292 spin_unlock_irq(shost->host_lock);
2293 return ndlp;
2294 } else if (!NLP_CHK_NODE_ACT(ndlp)) {
2295 ndlp = lpfc_enable_node(vport, ndlp, NLP_STE_NPR_NODE);
2296 if (!ndlp)
2297 return NULL;
2298 spin_lock_irq(shost->host_lock);
2299 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
2300 spin_unlock_irq(shost->host_lock);
2301 return ndlp;
2302 }
2303
2304 if ((vport->fc_flag & FC_RSCN_MODE) &&
2305 !(vport->fc_flag & FC_NDISC_ACTIVE)) {
2306 if (lpfc_rscn_payload_check(vport, did)) {
2307 /* If we've already recieved a PLOGI from this NPort
2308 * we don't need to try to discover it again.
2309 */
2310 if (ndlp->nlp_flag & NLP_RCV_PLOGI)
2311 return NULL;
2312
2313 spin_lock_irq(shost->host_lock);
2314 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
2315 spin_unlock_irq(shost->host_lock);
2316
2317 /* Since this node is marked for discovery,
2318 * delay timeout is not needed.
2319 */
2320 if (ndlp->nlp_flag & NLP_DELAY_TMO)
2321 lpfc_cancel_retry_delay_tmo(vport, ndlp);
2322 } else
2323 ndlp = NULL;
2324 } else {
2325 /* If we've already recieved a PLOGI from this NPort,
2326 * or we are already in the process of discovery on it,
2327 * we don't need to try to discover it again.
2328 */
2329 if (ndlp->nlp_state == NLP_STE_ADISC_ISSUE ||
2330 ndlp->nlp_state == NLP_STE_PLOGI_ISSUE ||
2331 ndlp->nlp_flag & NLP_RCV_PLOGI)
2332 return NULL;
2333 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2334 spin_lock_irq(shost->host_lock);
2335 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
2336 spin_unlock_irq(shost->host_lock);
2337 }
2338 return ndlp;
2339 }
2340
2341 /* Build a list of nodes to discover based on the loopmap */
2342 void
2343 lpfc_disc_list_loopmap(struct lpfc_vport *vport)
2344 {
2345 struct lpfc_hba *phba = vport->phba;
2346 int j;
2347 uint32_t alpa, index;
2348
2349 if (!lpfc_is_link_up(phba))
2350 return;
2351
2352 if (phba->fc_topology != TOPOLOGY_LOOP)
2353 return;
2354
2355 /* Check for loop map present or not */
2356 if (phba->alpa_map[0]) {
2357 for (j = 1; j <= phba->alpa_map[0]; j++) {
2358 alpa = phba->alpa_map[j];
2359 if (((vport->fc_myDID & 0xff) == alpa) || (alpa == 0))
2360 continue;
2361 lpfc_setup_disc_node(vport, alpa);
2362 }
2363 } else {
2364 /* No alpamap, so try all alpa's */
2365 for (j = 0; j < FC_MAXLOOP; j++) {
2366 /* If cfg_scan_down is set, start from highest
2367 * ALPA (0xef) to lowest (0x1).
2368 */
2369 if (vport->cfg_scan_down)
2370 index = j;
2371 else
2372 index = FC_MAXLOOP - j - 1;
2373 alpa = lpfcAlpaArray[index];
2374 if ((vport->fc_myDID & 0xff) == alpa)
2375 continue;
2376 lpfc_setup_disc_node(vport, alpa);
2377 }
2378 }
2379 return;
2380 }
2381
2382 void
2383 lpfc_issue_clear_la(struct lpfc_hba *phba, struct lpfc_vport *vport)
2384 {
2385 LPFC_MBOXQ_t *mbox;
2386 struct lpfc_sli *psli = &phba->sli;
2387 struct lpfc_sli_ring *extra_ring = &psli->ring[psli->extra_ring];
2388 struct lpfc_sli_ring *fcp_ring = &psli->ring[psli->fcp_ring];
2389 struct lpfc_sli_ring *next_ring = &psli->ring[psli->next_ring];
2390 int rc;
2391
2392 /*
2393 * if it's not a physical port or if we already send
2394 * clear_la then don't send it.
2395 */
2396 if ((phba->link_state >= LPFC_CLEAR_LA) ||
2397 (vport->port_type != LPFC_PHYSICAL_PORT))
2398 return;
2399
2400 /* Link up discovery */
2401 if ((mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL)) != NULL) {
2402 phba->link_state = LPFC_CLEAR_LA;
2403 lpfc_clear_la(phba, mbox);
2404 mbox->mbox_cmpl = lpfc_mbx_cmpl_clear_la;
2405 mbox->vport = vport;
2406 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
2407 if (rc == MBX_NOT_FINISHED) {
2408 mempool_free(mbox, phba->mbox_mem_pool);
2409 lpfc_disc_flush_list(vport);
2410 extra_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
2411 fcp_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
2412 next_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
2413 phba->link_state = LPFC_HBA_ERROR;
2414 }
2415 }
2416 }
2417
2418 /* Reg_vpi to tell firmware to resume normal operations */
2419 void
2420 lpfc_issue_reg_vpi(struct lpfc_hba *phba, struct lpfc_vport *vport)
2421 {
2422 LPFC_MBOXQ_t *regvpimbox;
2423
2424 regvpimbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2425 if (regvpimbox) {
2426 lpfc_reg_vpi(phba, vport->vpi, vport->fc_myDID, regvpimbox);
2427 regvpimbox->mbox_cmpl = lpfc_mbx_cmpl_reg_vpi;
2428 regvpimbox->vport = vport;
2429 if (lpfc_sli_issue_mbox(phba, regvpimbox, MBX_NOWAIT)
2430 == MBX_NOT_FINISHED) {
2431 mempool_free(regvpimbox, phba->mbox_mem_pool);
2432 }
2433 }
2434 }
2435
2436 /* Start Link up / RSCN discovery on NPR nodes */
2437 void
2438 lpfc_disc_start(struct lpfc_vport *vport)
2439 {
2440 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2441 struct lpfc_hba *phba = vport->phba;
2442 uint32_t num_sent;
2443 uint32_t clear_la_pending;
2444 int did_changed;
2445
2446 if (!lpfc_is_link_up(phba))
2447 return;
2448
2449 if (phba->link_state == LPFC_CLEAR_LA)
2450 clear_la_pending = 1;
2451 else
2452 clear_la_pending = 0;
2453
2454 if (vport->port_state < LPFC_VPORT_READY)
2455 vport->port_state = LPFC_DISC_AUTH;
2456
2457 lpfc_set_disctmo(vport);
2458
2459 if (vport->fc_prevDID == vport->fc_myDID)
2460 did_changed = 0;
2461 else
2462 did_changed = 1;
2463
2464 vport->fc_prevDID = vport->fc_myDID;
2465 vport->num_disc_nodes = 0;
2466
2467 /* Start Discovery state <hba_state> */
2468 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2469 "0202 Start Discovery hba state x%x "
2470 "Data: x%x x%x x%x\n",
2471 vport->port_state, vport->fc_flag, vport->fc_plogi_cnt,
2472 vport->fc_adisc_cnt);
2473
2474 /* First do ADISCs - if any */
2475 num_sent = lpfc_els_disc_adisc(vport);
2476
2477 if (num_sent)
2478 return;
2479
2480 /*
2481 * For SLI3, cmpl_reg_vpi will set port_state to READY, and
2482 * continue discovery.
2483 */
2484 if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
2485 !(vport->fc_flag & FC_PT2PT) &&
2486 !(vport->fc_flag & FC_RSCN_MODE)) {
2487 lpfc_issue_reg_vpi(phba, vport);
2488 return;
2489 }
2490
2491 /*
2492 * For SLI2, we need to set port_state to READY and continue
2493 * discovery.
2494 */
2495 if (vport->port_state < LPFC_VPORT_READY && !clear_la_pending) {
2496 /* If we get here, there is nothing to ADISC */
2497 if (vport->port_type == LPFC_PHYSICAL_PORT)
2498 lpfc_issue_clear_la(phba, vport);
2499
2500 if (!(vport->fc_flag & FC_ABORT_DISCOVERY)) {
2501 vport->num_disc_nodes = 0;
2502 /* go thru NPR nodes and issue ELS PLOGIs */
2503 if (vport->fc_npr_cnt)
2504 lpfc_els_disc_plogi(vport);
2505
2506 if (!vport->num_disc_nodes) {
2507 spin_lock_irq(shost->host_lock);
2508 vport->fc_flag &= ~FC_NDISC_ACTIVE;
2509 spin_unlock_irq(shost->host_lock);
2510 lpfc_can_disctmo(vport);
2511 }
2512 }
2513 vport->port_state = LPFC_VPORT_READY;
2514 } else {
2515 /* Next do PLOGIs - if any */
2516 num_sent = lpfc_els_disc_plogi(vport);
2517
2518 if (num_sent)
2519 return;
2520
2521 if (vport->fc_flag & FC_RSCN_MODE) {
2522 /* Check to see if more RSCNs came in while we
2523 * were processing this one.
2524 */
2525 if ((vport->fc_rscn_id_cnt == 0) &&
2526 (!(vport->fc_flag & FC_RSCN_DISCOVERY))) {
2527 spin_lock_irq(shost->host_lock);
2528 vport->fc_flag &= ~FC_RSCN_MODE;
2529 spin_unlock_irq(shost->host_lock);
2530 lpfc_can_disctmo(vport);
2531 } else
2532 lpfc_els_handle_rscn(vport);
2533 }
2534 }
2535 return;
2536 }
2537
2538 /*
2539 * Ignore completion for all IOCBs on tx and txcmpl queue for ELS
2540 * ring the match the sppecified nodelist.
2541 */
2542 static void
2543 lpfc_free_tx(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
2544 {
2545 LIST_HEAD(completions);
2546 struct lpfc_sli *psli;
2547 IOCB_t *icmd;
2548 struct lpfc_iocbq *iocb, *next_iocb;
2549 struct lpfc_sli_ring *pring;
2550
2551 psli = &phba->sli;
2552 pring = &psli->ring[LPFC_ELS_RING];
2553
2554 /* Error matching iocb on txq or txcmplq
2555 * First check the txq.
2556 */
2557 spin_lock_irq(&phba->hbalock);
2558 list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
2559 if (iocb->context1 != ndlp) {
2560 continue;
2561 }
2562 icmd = &iocb->iocb;
2563 if ((icmd->ulpCommand == CMD_ELS_REQUEST64_CR) ||
2564 (icmd->ulpCommand == CMD_XMIT_ELS_RSP64_CX)) {
2565
2566 list_move_tail(&iocb->list, &completions);
2567 pring->txq_cnt--;
2568 }
2569 }
2570
2571 /* Next check the txcmplq */
2572 list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) {
2573 if (iocb->context1 != ndlp) {
2574 continue;
2575 }
2576 icmd = &iocb->iocb;
2577 if (icmd->ulpCommand == CMD_ELS_REQUEST64_CR ||
2578 icmd->ulpCommand == CMD_XMIT_ELS_RSP64_CX) {
2579 lpfc_sli_issue_abort_iotag(phba, pring, iocb);
2580 }
2581 }
2582 spin_unlock_irq(&phba->hbalock);
2583
2584 while (!list_empty(&completions)) {
2585 iocb = list_get_first(&completions, struct lpfc_iocbq, list);
2586 list_del_init(&iocb->list);
2587
2588 if (!iocb->iocb_cmpl)
2589 lpfc_sli_release_iocbq(phba, iocb);
2590 else {
2591 icmd = &iocb->iocb;
2592 icmd->ulpStatus = IOSTAT_LOCAL_REJECT;
2593 icmd->un.ulpWord[4] = IOERR_SLI_ABORTED;
2594 (iocb->iocb_cmpl) (phba, iocb, iocb);
2595 }
2596 }
2597 }
2598
2599 static void
2600 lpfc_disc_flush_list(struct lpfc_vport *vport)
2601 {
2602 struct lpfc_nodelist *ndlp, *next_ndlp;
2603 struct lpfc_hba *phba = vport->phba;
2604
2605 if (vport->fc_plogi_cnt || vport->fc_adisc_cnt) {
2606 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes,
2607 nlp_listp) {
2608 if (!NLP_CHK_NODE_ACT(ndlp))
2609 continue;
2610 if (ndlp->nlp_state == NLP_STE_PLOGI_ISSUE ||
2611 ndlp->nlp_state == NLP_STE_ADISC_ISSUE) {
2612 lpfc_free_tx(phba, ndlp);
2613 }
2614 }
2615 }
2616 }
2617
2618 void
2619 lpfc_cleanup_discovery_resources(struct lpfc_vport *vport)
2620 {
2621 lpfc_els_flush_rscn(vport);
2622 lpfc_els_flush_cmd(vport);
2623 lpfc_disc_flush_list(vport);
2624 }
2625
2626 /*****************************************************************************/
2627 /*
2628 * NAME: lpfc_disc_timeout
2629 *
2630 * FUNCTION: Fibre Channel driver discovery timeout routine.
2631 *
2632 * EXECUTION ENVIRONMENT: interrupt only
2633 *
2634 * CALLED FROM:
2635 * Timer function
2636 *
2637 * RETURNS:
2638 * none
2639 */
2640 /*****************************************************************************/
2641 void
2642 lpfc_disc_timeout(unsigned long ptr)
2643 {
2644 struct lpfc_vport *vport = (struct lpfc_vport *) ptr;
2645 struct lpfc_hba *phba = vport->phba;
2646 unsigned long flags = 0;
2647
2648 if (unlikely(!phba))
2649 return;
2650
2651 if ((vport->work_port_events & WORKER_DISC_TMO) == 0) {
2652 spin_lock_irqsave(&vport->work_port_lock, flags);
2653 vport->work_port_events |= WORKER_DISC_TMO;
2654 spin_unlock_irqrestore(&vport->work_port_lock, flags);
2655
2656 spin_lock_irqsave(&phba->hbalock, flags);
2657 if (phba->work_wait)
2658 lpfc_worker_wake_up(phba);
2659 spin_unlock_irqrestore(&phba->hbalock, flags);
2660 }
2661 return;
2662 }
2663
2664 static void
2665 lpfc_disc_timeout_handler(struct lpfc_vport *vport)
2666 {
2667 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2668 struct lpfc_hba *phba = vport->phba;
2669 struct lpfc_sli *psli = &phba->sli;
2670 struct lpfc_nodelist *ndlp, *next_ndlp;
2671 LPFC_MBOXQ_t *initlinkmbox;
2672 int rc, clrlaerr = 0;
2673
2674 if (!(vport->fc_flag & FC_DISC_TMO))
2675 return;
2676
2677 spin_lock_irq(shost->host_lock);
2678 vport->fc_flag &= ~FC_DISC_TMO;
2679 spin_unlock_irq(shost->host_lock);
2680
2681 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
2682 "disc timeout: state:x%x rtry:x%x flg:x%x",
2683 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
2684
2685 switch (vport->port_state) {
2686
2687 case LPFC_LOCAL_CFG_LINK:
2688 /* port_state is identically LPFC_LOCAL_CFG_LINK while waiting for
2689 * FAN
2690 */
2691 /* FAN timeout */
2692 lpfc_printf_vlog(vport, KERN_WARNING, LOG_DISCOVERY,
2693 "0221 FAN timeout\n");
2694 /* Start discovery by sending FLOGI, clean up old rpis */
2695 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes,
2696 nlp_listp) {
2697 if (!NLP_CHK_NODE_ACT(ndlp))
2698 continue;
2699 if (ndlp->nlp_state != NLP_STE_NPR_NODE)
2700 continue;
2701 if (ndlp->nlp_type & NLP_FABRIC) {
2702 /* Clean up the ndlp on Fabric connections */
2703 lpfc_drop_node(vport, ndlp);
2704
2705 } else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) {
2706 /* Fail outstanding IO now since device
2707 * is marked for PLOGI.
2708 */
2709 lpfc_unreg_rpi(vport, ndlp);
2710 }
2711 }
2712 if (vport->port_state != LPFC_FLOGI) {
2713 lpfc_initial_flogi(vport);
2714 return;
2715 }
2716 break;
2717
2718 case LPFC_FDISC:
2719 case LPFC_FLOGI:
2720 /* port_state is identically LPFC_FLOGI while waiting for FLOGI cmpl */
2721 /* Initial FLOGI timeout */
2722 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2723 "0222 Initial %s timeout\n",
2724 vport->vpi ? "FDISC" : "FLOGI");
2725
2726 /* Assume no Fabric and go on with discovery.
2727 * Check for outstanding ELS FLOGI to abort.
2728 */
2729
2730 /* FLOGI failed, so just use loop map to make discovery list */
2731 lpfc_disc_list_loopmap(vport);
2732
2733 /* Start discovery */
2734 lpfc_disc_start(vport);
2735 break;
2736
2737 case LPFC_FABRIC_CFG_LINK:
2738 /* hba_state is identically LPFC_FABRIC_CFG_LINK while waiting for
2739 NameServer login */
2740 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2741 "0223 Timeout while waiting for "
2742 "NameServer login\n");
2743 /* Next look for NameServer ndlp */
2744 ndlp = lpfc_findnode_did(vport, NameServer_DID);
2745 if (ndlp && NLP_CHK_NODE_ACT(ndlp))
2746 lpfc_els_abort(phba, ndlp);
2747
2748 /* ReStart discovery */
2749 goto restart_disc;
2750
2751 case LPFC_NS_QRY:
2752 /* Check for wait for NameServer Rsp timeout */
2753 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2754 "0224 NameServer Query timeout "
2755 "Data: x%x x%x\n",
2756 vport->fc_ns_retry, LPFC_MAX_NS_RETRY);
2757
2758 if (vport->fc_ns_retry < LPFC_MAX_NS_RETRY) {
2759 /* Try it one more time */
2760 vport->fc_ns_retry++;
2761 rc = lpfc_ns_cmd(vport, SLI_CTNS_GID_FT,
2762 vport->fc_ns_retry, 0);
2763 if (rc == 0)
2764 break;
2765 }
2766 vport->fc_ns_retry = 0;
2767
2768 restart_disc:
2769 /*
2770 * Discovery is over.
2771 * set port_state to PORT_READY if SLI2.
2772 * cmpl_reg_vpi will set port_state to READY for SLI3.
2773 */
2774 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
2775 lpfc_issue_reg_vpi(phba, vport);
2776 else { /* NPIV Not enabled */
2777 lpfc_issue_clear_la(phba, vport);
2778 vport->port_state = LPFC_VPORT_READY;
2779 }
2780
2781 /* Setup and issue mailbox INITIALIZE LINK command */
2782 initlinkmbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2783 if (!initlinkmbox) {
2784 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2785 "0206 Device Discovery "
2786 "completion error\n");
2787 phba->link_state = LPFC_HBA_ERROR;
2788 break;
2789 }
2790
2791 lpfc_linkdown(phba);
2792 lpfc_init_link(phba, initlinkmbox, phba->cfg_topology,
2793 phba->cfg_link_speed);
2794 initlinkmbox->mb.un.varInitLnk.lipsr_AL_PA = 0;
2795 initlinkmbox->vport = vport;
2796 initlinkmbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
2797 rc = lpfc_sli_issue_mbox(phba, initlinkmbox, MBX_NOWAIT);
2798 lpfc_set_loopback_flag(phba);
2799 if (rc == MBX_NOT_FINISHED)
2800 mempool_free(initlinkmbox, phba->mbox_mem_pool);
2801
2802 break;
2803
2804 case LPFC_DISC_AUTH:
2805 /* Node Authentication timeout */
2806 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2807 "0227 Node Authentication timeout\n");
2808 lpfc_disc_flush_list(vport);
2809
2810 /*
2811 * set port_state to PORT_READY if SLI2.
2812 * cmpl_reg_vpi will set port_state to READY for SLI3.
2813 */
2814 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
2815 lpfc_issue_reg_vpi(phba, vport);
2816 else { /* NPIV Not enabled */
2817 lpfc_issue_clear_la(phba, vport);
2818 vport->port_state = LPFC_VPORT_READY;
2819 }
2820 break;
2821
2822 case LPFC_VPORT_READY:
2823 if (vport->fc_flag & FC_RSCN_MODE) {
2824 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2825 "0231 RSCN timeout Data: x%x "
2826 "x%x\n",
2827 vport->fc_ns_retry, LPFC_MAX_NS_RETRY);
2828
2829 /* Cleanup any outstanding ELS commands */
2830 lpfc_els_flush_cmd(vport);
2831
2832 lpfc_els_flush_rscn(vport);
2833 lpfc_disc_flush_list(vport);
2834 }
2835 break;
2836
2837 default:
2838 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2839 "0229 Unexpected discovery timeout, "
2840 "vport State x%x\n", vport->port_state);
2841 break;
2842 }
2843
2844 switch (phba->link_state) {
2845 case LPFC_CLEAR_LA:
2846 /* CLEAR LA timeout */
2847 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2848 "0228 CLEAR LA timeout\n");
2849 clrlaerr = 1;
2850 break;
2851
2852 case LPFC_LINK_UP:
2853 lpfc_issue_clear_la(phba, vport);
2854 /* Drop thru */
2855 case LPFC_LINK_UNKNOWN:
2856 case LPFC_WARM_START:
2857 case LPFC_INIT_START:
2858 case LPFC_INIT_MBX_CMDS:
2859 case LPFC_LINK_DOWN:
2860 case LPFC_HBA_ERROR:
2861 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2862 "0230 Unexpected timeout, hba link "
2863 "state x%x\n", phba->link_state);
2864 clrlaerr = 1;
2865 break;
2866
2867 case LPFC_HBA_READY:
2868 break;
2869 }
2870
2871 if (clrlaerr) {
2872 lpfc_disc_flush_list(vport);
2873 psli->ring[(psli->extra_ring)].flag &= ~LPFC_STOP_IOCB_EVENT;
2874 psli->ring[(psli->fcp_ring)].flag &= ~LPFC_STOP_IOCB_EVENT;
2875 psli->ring[(psli->next_ring)].flag &= ~LPFC_STOP_IOCB_EVENT;
2876 vport->port_state = LPFC_VPORT_READY;
2877 }
2878
2879 return;
2880 }
2881
2882 /*
2883 * This routine handles processing a NameServer REG_LOGIN mailbox
2884 * command upon completion. It is setup in the LPFC_MBOXQ
2885 * as the completion routine when the command is
2886 * handed off to the SLI layer.
2887 */
2888 void
2889 lpfc_mbx_cmpl_fdmi_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
2890 {
2891 MAILBOX_t *mb = &pmb->mb;
2892 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
2893 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2;
2894 struct lpfc_vport *vport = pmb->vport;
2895
2896 pmb->context1 = NULL;
2897
2898 ndlp->nlp_rpi = mb->un.varWords[0];
2899 ndlp->nlp_type |= NLP_FABRIC;
2900 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
2901
2902 /*
2903 * Start issuing Fabric-Device Management Interface (FDMI) command to
2904 * 0xfffffa (FDMI well known port) or Delay issuing FDMI command if
2905 * fdmi-on=2 (supporting RPA/hostnmae)
2906 */
2907
2908 if (vport->cfg_fdmi_on == 1)
2909 lpfc_fdmi_cmd(vport, ndlp, SLI_MGMT_DHBA);
2910 else
2911 mod_timer(&vport->fc_fdmitmo, jiffies + HZ * 60);
2912
2913 /* decrement the node reference count held for this callback
2914 * function.
2915 */
2916 lpfc_nlp_put(ndlp);
2917 lpfc_mbuf_free(phba, mp->virt, mp->phys);
2918 kfree(mp);
2919 mempool_free(pmb, phba->mbox_mem_pool);
2920
2921 return;
2922 }
2923
2924 static int
2925 lpfc_filter_by_rpi(struct lpfc_nodelist *ndlp, void *param)
2926 {
2927 uint16_t *rpi = param;
2928
2929 return ndlp->nlp_rpi == *rpi;
2930 }
2931
2932 static int
2933 lpfc_filter_by_wwpn(struct lpfc_nodelist *ndlp, void *param)
2934 {
2935 return memcmp(&ndlp->nlp_portname, param,
2936 sizeof(ndlp->nlp_portname)) == 0;
2937 }
2938
2939 static struct lpfc_nodelist *
2940 __lpfc_find_node(struct lpfc_vport *vport, node_filter filter, void *param)
2941 {
2942 struct lpfc_nodelist *ndlp;
2943
2944 list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
2945 if (filter(ndlp, param))
2946 return ndlp;
2947 }
2948 return NULL;
2949 }
2950
2951 /*
2952 * This routine looks up the ndlp lists for the given RPI. If rpi found it
2953 * returns the node list element pointer else return NULL.
2954 */
2955 struct lpfc_nodelist *
2956 __lpfc_findnode_rpi(struct lpfc_vport *vport, uint16_t rpi)
2957 {
2958 return __lpfc_find_node(vport, lpfc_filter_by_rpi, &rpi);
2959 }
2960
2961 /*
2962 * This routine looks up the ndlp lists for the given WWPN. If WWPN found it
2963 * returns the node element list pointer else return NULL.
2964 */
2965 struct lpfc_nodelist *
2966 lpfc_findnode_wwpn(struct lpfc_vport *vport, struct lpfc_name *wwpn)
2967 {
2968 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2969 struct lpfc_nodelist *ndlp;
2970
2971 spin_lock_irq(shost->host_lock);
2972 ndlp = __lpfc_find_node(vport, lpfc_filter_by_wwpn, wwpn);
2973 spin_unlock_irq(shost->host_lock);
2974 return ndlp;
2975 }
2976
2977 void
2978 lpfc_nlp_init(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2979 uint32_t did)
2980 {
2981 memset(ndlp, 0, sizeof (struct lpfc_nodelist));
2982 INIT_LIST_HEAD(&ndlp->els_retry_evt.evt_listp);
2983 INIT_LIST_HEAD(&ndlp->dev_loss_evt.evt_listp);
2984 init_timer(&ndlp->nlp_delayfunc);
2985 ndlp->nlp_delayfunc.function = lpfc_els_retry_delay;
2986 ndlp->nlp_delayfunc.data = (unsigned long)ndlp;
2987 ndlp->nlp_DID = did;
2988 ndlp->vport = vport;
2989 ndlp->nlp_sid = NLP_NO_SID;
2990 INIT_LIST_HEAD(&ndlp->nlp_listp);
2991 kref_init(&ndlp->kref);
2992 NLP_INT_NODE_ACT(ndlp);
2993
2994 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
2995 "node init: did:x%x",
2996 ndlp->nlp_DID, 0, 0);
2997
2998 return;
2999 }
3000
3001 /* This routine releases all resources associated with a specifc NPort's ndlp
3002 * and mempool_free's the nodelist.
3003 */
3004 static void
3005 lpfc_nlp_release(struct kref *kref)
3006 {
3007 struct lpfc_hba *phba;
3008 unsigned long flags;
3009 struct lpfc_nodelist *ndlp = container_of(kref, struct lpfc_nodelist,
3010 kref);
3011
3012 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
3013 "node release: did:x%x flg:x%x type:x%x",
3014 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
3015
3016 lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE,
3017 "0279 lpfc_nlp_release: ndlp:x%p "
3018 "usgmap:x%x refcnt:%d\n",
3019 (void *)ndlp, ndlp->nlp_usg_map,
3020 atomic_read(&ndlp->kref.refcount));
3021
3022 /* remove ndlp from action. */
3023 lpfc_nlp_remove(ndlp->vport, ndlp);
3024
3025 /* clear the ndlp active flag for all release cases */
3026 phba = ndlp->vport->phba;
3027 spin_lock_irqsave(&phba->ndlp_lock, flags);
3028 NLP_CLR_NODE_ACT(ndlp);
3029 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
3030
3031 /* free ndlp memory for final ndlp release */
3032 if (NLP_CHK_FREE_REQ(ndlp))
3033 mempool_free(ndlp, ndlp->vport->phba->nlp_mem_pool);
3034 }
3035
3036 /* This routine bumps the reference count for a ndlp structure to ensure
3037 * that one discovery thread won't free a ndlp while another discovery thread
3038 * is using it.
3039 */
3040 struct lpfc_nodelist *
3041 lpfc_nlp_get(struct lpfc_nodelist *ndlp)
3042 {
3043 struct lpfc_hba *phba;
3044 unsigned long flags;
3045
3046 if (ndlp) {
3047 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
3048 "node get: did:x%x flg:x%x refcnt:x%x",
3049 ndlp->nlp_DID, ndlp->nlp_flag,
3050 atomic_read(&ndlp->kref.refcount));
3051 /* The check of ndlp usage to prevent incrementing the
3052 * ndlp reference count that is in the process of being
3053 * released.
3054 */
3055 phba = ndlp->vport->phba;
3056 spin_lock_irqsave(&phba->ndlp_lock, flags);
3057 if (!NLP_CHK_NODE_ACT(ndlp) || NLP_CHK_FREE_ACK(ndlp)) {
3058 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
3059 lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_NODE,
3060 "0276 lpfc_nlp_get: ndlp:x%p "
3061 "usgmap:x%x refcnt:%d\n",
3062 (void *)ndlp, ndlp->nlp_usg_map,
3063 atomic_read(&ndlp->kref.refcount));
3064 return NULL;
3065 } else
3066 kref_get(&ndlp->kref);
3067 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
3068 }
3069 return ndlp;
3070 }
3071
3072 /* This routine decrements the reference count for a ndlp structure. If the
3073 * count goes to 0, this indicates the the associated nodelist should be
3074 * freed. Returning 1 indicates the ndlp resource has been released; on the
3075 * other hand, returning 0 indicates the ndlp resource has not been released
3076 * yet.
3077 */
3078 int
3079 lpfc_nlp_put(struct lpfc_nodelist *ndlp)
3080 {
3081 struct lpfc_hba *phba;
3082 unsigned long flags;
3083
3084 if (!ndlp)
3085 return 1;
3086
3087 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
3088 "node put: did:x%x flg:x%x refcnt:x%x",
3089 ndlp->nlp_DID, ndlp->nlp_flag,
3090 atomic_read(&ndlp->kref.refcount));
3091 phba = ndlp->vport->phba;
3092 spin_lock_irqsave(&phba->ndlp_lock, flags);
3093 /* Check the ndlp memory free acknowledge flag to avoid the
3094 * possible race condition that kref_put got invoked again
3095 * after previous one has done ndlp memory free.
3096 */
3097 if (NLP_CHK_FREE_ACK(ndlp)) {
3098 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
3099 lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_NODE,
3100 "0274 lpfc_nlp_put: ndlp:x%p "
3101 "usgmap:x%x refcnt:%d\n",
3102 (void *)ndlp, ndlp->nlp_usg_map,
3103 atomic_read(&ndlp->kref.refcount));
3104 return 1;
3105 }
3106 /* Check the ndlp inactivate log flag to avoid the possible
3107 * race condition that kref_put got invoked again after ndlp
3108 * is already in inactivating state.
3109 */
3110 if (NLP_CHK_IACT_REQ(ndlp)) {
3111 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
3112 lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_NODE,
3113 "0275 lpfc_nlp_put: ndlp:x%p "
3114 "usgmap:x%x refcnt:%d\n",
3115 (void *)ndlp, ndlp->nlp_usg_map,
3116 atomic_read(&ndlp->kref.refcount));
3117 return 1;
3118 }
3119 /* For last put, mark the ndlp usage flags to make sure no
3120 * other kref_get and kref_put on the same ndlp shall get
3121 * in between the process when the final kref_put has been
3122 * invoked on this ndlp.
3123 */
3124 if (atomic_read(&ndlp->kref.refcount) == 1) {
3125 /* Indicate ndlp is put to inactive state. */
3126 NLP_SET_IACT_REQ(ndlp);
3127 /* Acknowledge ndlp memory free has been seen. */
3128 if (NLP_CHK_FREE_REQ(ndlp))
3129 NLP_SET_FREE_ACK(ndlp);
3130 }
3131 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
3132 /* Note, the kref_put returns 1 when decrementing a reference
3133 * count that was 1, it invokes the release callback function,
3134 * but it still left the reference count as 1 (not actually
3135 * performs the last decrementation). Otherwise, it actually
3136 * decrements the reference count and returns 0.
3137 */
3138 return kref_put(&ndlp->kref, lpfc_nlp_release);
3139 }
3140
3141 /* This routine free's the specified nodelist if it is not in use
3142 * by any other discovery thread. This routine returns 1 if the
3143 * ndlp has been freed. A return value of 0 indicates the ndlp is
3144 * not yet been released.
3145 */
3146 int
3147 lpfc_nlp_not_used(struct lpfc_nodelist *ndlp)
3148 {
3149 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
3150 "node not used: did:x%x flg:x%x refcnt:x%x",
3151 ndlp->nlp_DID, ndlp->nlp_flag,
3152 atomic_read(&ndlp->kref.refcount));
3153 if (atomic_read(&ndlp->kref.refcount) == 1)
3154 if (lpfc_nlp_put(ndlp))
3155 return 1;
3156 return 0;
3157 }
A Kernel for the Dreambox dm7025.