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au1550_spi: fix prototype of irq handler
[wrt350n-kernel.git] / drivers / scsi / lpfc / lpfc_hbadisc.c
blob976653440fba8a3714d8f753fac8b1a52933df26
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) {
73 if (rport->roles & FC_RPORT_ROLE_FCP_TARGET)
74 printk(KERN_ERR "Cannot find remote node"
75 " to terminate I/O Data x%x\n",
76 rport->port_id);
77 return;
78 }
79
80 phba = ndlp->vport->phba;
81
82 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_RPORT,
83 "rport terminate: sid:x%x did:x%x flg:x%x",
84 ndlp->nlp_sid, ndlp->nlp_DID, ndlp->nlp_flag);
85
86 if (ndlp->nlp_sid != NLP_NO_SID) {
87 lpfc_sli_abort_iocb(ndlp->vport,
88 &phba->sli.ring[phba->sli.fcp_ring],
89 ndlp->nlp_sid, 0, LPFC_CTX_TGT);
90 }
91
92 /*
93 * A device is normally blocked for rediscovery and unblocked when
94 * devloss timeout happens. In case a vport is removed or driver
95 * unloaded before devloss timeout happens, we need to unblock here.
96 */
97 scsi_target_unblock(&rport->dev);
98 return;
99 }
100
101 /*
102 * This function will be called when dev_loss_tmo fire.
103 */
104 void
105 lpfc_dev_loss_tmo_callbk(struct fc_rport *rport)
106 {
107 struct lpfc_rport_data *rdata;
108 struct lpfc_nodelist * ndlp;
109 struct lpfc_vport *vport;
110 struct lpfc_hba *phba;
111 struct lpfc_work_evt *evtp;
112 int put_node;
113 int put_rport;
114
115 rdata = rport->dd_data;
116 ndlp = rdata->pnode;
117 if (!ndlp)
118 return;
119
120 vport = ndlp->vport;
121 phba = vport->phba;
122
123 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
124 "rport devlosscb: sid:x%x did:x%x flg:x%x",
125 ndlp->nlp_sid, ndlp->nlp_DID, ndlp->nlp_flag);
126
127 /* Don't defer this if we are in the process of deleting the vport
128 * or unloading the driver. The unload will cleanup the node
129 * appropriately we just need to cleanup the ndlp rport info here.
130 */
131 if (vport->load_flag & FC_UNLOADING) {
132 put_node = rdata->pnode != NULL;
133 put_rport = ndlp->rport != NULL;
134 rdata->pnode = NULL;
135 ndlp->rport = NULL;
136 if (put_node)
137 lpfc_nlp_put(ndlp);
138 if (put_rport)
139 put_device(&rport->dev);
140 return;
141 }
142
143 if (ndlp->nlp_state == NLP_STE_MAPPED_NODE)
144 return;
145
146 evtp = &ndlp->dev_loss_evt;
147
148 if (!list_empty(&evtp->evt_listp))
149 return;
150
151 spin_lock_irq(&phba->hbalock);
152 /* We need to hold the node by incrementing the reference
153 * count until this queued work is done
154 */
155 evtp->evt_arg1 = lpfc_nlp_get(ndlp);
156 evtp->evt = LPFC_EVT_DEV_LOSS;
157 list_add_tail(&evtp->evt_listp, &phba->work_list);
158 if (phba->work_wait)
159 wake_up(phba->work_wait);
160
161 spin_unlock_irq(&phba->hbalock);
162
163 return;
164 }
165
166 /*
167 * This function is called from the worker thread when dev_loss_tmo
168 * expire.
169 */
170 static void
171 lpfc_dev_loss_tmo_handler(struct lpfc_nodelist *ndlp)
172 {
173 struct lpfc_rport_data *rdata;
174 struct fc_rport *rport;
175 struct lpfc_vport *vport;
176 struct lpfc_hba *phba;
177 uint8_t *name;
178 int put_node;
179 int put_rport;
180 int warn_on = 0;
181
182 rport = ndlp->rport;
183
184 if (!rport)
185 return;
186
187 rdata = rport->dd_data;
188 name = (uint8_t *) &ndlp->nlp_portname;
189 vport = ndlp->vport;
190 phba = vport->phba;
191
192 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
193 "rport devlosstmo:did:x%x type:x%x id:x%x",
194 ndlp->nlp_DID, ndlp->nlp_type, rport->scsi_target_id);
195
196 /* Don't defer this if we are in the process of deleting the vport
197 * or unloading the driver. The unload will cleanup the node
198 * appropriately we just need to cleanup the ndlp rport info here.
199 */
200 if (vport->load_flag & FC_UNLOADING) {
201 if (ndlp->nlp_sid != NLP_NO_SID) {
202 /* flush the target */
203 lpfc_sli_abort_iocb(vport,
204 &phba->sli.ring[phba->sli.fcp_ring],
205 ndlp->nlp_sid, 0, LPFC_CTX_TGT);
206 }
207 put_node = rdata->pnode != NULL;
208 put_rport = ndlp->rport != NULL;
209 rdata->pnode = NULL;
210 ndlp->rport = NULL;
211 if (put_node)
212 lpfc_nlp_put(ndlp);
213 if (put_rport)
214 put_device(&rport->dev);
215 return;
216 }
217
218 if (ndlp->nlp_state == NLP_STE_MAPPED_NODE)
219 return;
220
221 if (ndlp->nlp_type & NLP_FABRIC) {
222 /* We will clean up these Nodes in linkup */
223 put_node = rdata->pnode != NULL;
224 put_rport = ndlp->rport != NULL;
225 rdata->pnode = NULL;
226 ndlp->rport = NULL;
227 if (put_node)
228 lpfc_nlp_put(ndlp);
229 if (put_rport)
230 put_device(&rport->dev);
231 return;
232 }
233
234 if (ndlp->nlp_sid != NLP_NO_SID) {
235 warn_on = 1;
236 /* flush the target */
237 lpfc_sli_abort_iocb(vport, &phba->sli.ring[phba->sli.fcp_ring],
238 ndlp->nlp_sid, 0, LPFC_CTX_TGT);
239 }
240 if (vport->load_flag & FC_UNLOADING)
241 warn_on = 0;
242
243 if (warn_on) {
244 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
245 "0203 Devloss timeout on "
246 "WWPN %x:%x:%x:%x:%x:%x:%x:%x "
247 "NPort x%x Data: x%x x%x x%x\n",
248 *name, *(name+1), *(name+2), *(name+3),
249 *(name+4), *(name+5), *(name+6), *(name+7),
250 ndlp->nlp_DID, ndlp->nlp_flag,
251 ndlp->nlp_state, ndlp->nlp_rpi);
252 } else {
253 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
254 "0204 Devloss timeout on "
255 "WWPN %x:%x:%x:%x:%x:%x:%x:%x "
256 "NPort x%x Data: x%x x%x x%x\n",
257 *name, *(name+1), *(name+2), *(name+3),
258 *(name+4), *(name+5), *(name+6), *(name+7),
259 ndlp->nlp_DID, ndlp->nlp_flag,
260 ndlp->nlp_state, ndlp->nlp_rpi);
261 }
262
263 put_node = rdata->pnode != NULL;
264 put_rport = ndlp->rport != NULL;
265 rdata->pnode = NULL;
266 ndlp->rport = NULL;
267 if (put_node)
268 lpfc_nlp_put(ndlp);
269 if (put_rport)
270 put_device(&rport->dev);
271
272 if (!(vport->load_flag & FC_UNLOADING) &&
273 !(ndlp->nlp_flag & NLP_DELAY_TMO) &&
274 !(ndlp->nlp_flag & NLP_NPR_2B_DISC) &&
275 (ndlp->nlp_state != NLP_STE_UNMAPPED_NODE))
276 lpfc_disc_state_machine(vport, ndlp, NULL, NLP_EVT_DEVICE_RM);
277 }
278
279
280 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 work_port_events = vport->work_port_events;
403 if (work_port_events & WORKER_DISC_TMO)
404 lpfc_disc_timeout_handler(vport);
405 if (work_port_events & WORKER_ELS_TMO)
406 lpfc_els_timeout_handler(vport);
407 if (work_port_events & WORKER_HB_TMO)
408 lpfc_hb_timeout_handler(phba);
409 if (work_port_events & WORKER_MBOX_TMO)
410 lpfc_mbox_timeout_handler(phba);
411 if (work_port_events & WORKER_FABRIC_BLOCK_TMO)
412 lpfc_unblock_fabric_iocbs(phba);
413 if (work_port_events & WORKER_FDMI_TMO)
414 lpfc_fdmi_timeout_handler(vport);
415 if (work_port_events & WORKER_RAMP_DOWN_QUEUE)
416 lpfc_ramp_down_queue_handler(phba);
417 if (work_port_events & WORKER_RAMP_UP_QUEUE)
418 lpfc_ramp_up_queue_handler(phba);
419 spin_lock_irq(&vport->work_port_lock);
420 vport->work_port_events &= ~work_port_events;
421 spin_unlock_irq(&vport->work_port_lock);
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 lpfc_sli_handle_slow_ring_event(phba, pring,
434 (status &
435 HA_RXMASK));
436 pring->flag &= ~LPFC_DEFERRED_RING_EVENT;
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 phba->work_wait = NULL;
523 return 0;
524 }
525
526 /*
527 * This is only called to handle FC worker events. Since this a rare
528 * occurance, we allocate a struct lpfc_work_evt structure here instead of
529 * embedding it in the IOCB.
530 */
531 int
532 lpfc_workq_post_event(struct lpfc_hba *phba, void *arg1, void *arg2,
533 uint32_t evt)
534 {
535 struct lpfc_work_evt *evtp;
536 unsigned long flags;
537
538 /*
539 * All Mailbox completions and LPFC_ELS_RING rcv ring IOCB events will
540 * be queued to worker thread for processing
541 */
542 evtp = kmalloc(sizeof(struct lpfc_work_evt), GFP_ATOMIC);
543 if (!evtp)
544 return 0;
545
546 evtp->evt_arg1 = arg1;
547 evtp->evt_arg2 = arg2;
548 evtp->evt = evt;
549
550 spin_lock_irqsave(&phba->hbalock, flags);
551 list_add_tail(&evtp->evt_listp, &phba->work_list);
552 if (phba->work_wait)
553 lpfc_worker_wake_up(phba);
554 spin_unlock_irqrestore(&phba->hbalock, flags);
555
556 return 1;
557 }
558
559 void
560 lpfc_cleanup_rpis(struct lpfc_vport *vport, int remove)
561 {
562 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
563 struct lpfc_hba *phba = vport->phba;
564 struct lpfc_nodelist *ndlp, *next_ndlp;
565 int rc;
566
567 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) {
568 if (!NLP_CHK_NODE_ACT(ndlp))
569 continue;
570 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
571 continue;
572 if ((phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN) ||
573 ((vport->port_type == LPFC_NPIV_PORT) &&
574 (ndlp->nlp_DID == NameServer_DID)))
575 lpfc_unreg_rpi(vport, ndlp);
576
577 /* Leave Fabric nodes alone on link down */
578 if (!remove && ndlp->nlp_type & NLP_FABRIC)
579 continue;
580 rc = lpfc_disc_state_machine(vport, ndlp, NULL,
581 remove
582 ? NLP_EVT_DEVICE_RM
583 : NLP_EVT_DEVICE_RECOVERY);
584 }
585 if (phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN) {
586 lpfc_mbx_unreg_vpi(vport);
587 spin_lock_irq(shost->host_lock);
588 vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
589 spin_unlock_irq(shost->host_lock);
590 }
591 }
592
593 void
594 lpfc_port_link_failure(struct lpfc_vport *vport)
595 {
596 /* Cleanup any outstanding RSCN activity */
597 lpfc_els_flush_rscn(vport);
598
599 /* Cleanup any outstanding ELS commands */
600 lpfc_els_flush_cmd(vport);
601
602 lpfc_cleanup_rpis(vport, 0);
603
604 /* Turn off discovery timer if its running */
605 lpfc_can_disctmo(vport);
606 }
607
608 static void
609 lpfc_linkdown_port(struct lpfc_vport *vport)
610 {
611 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
612
613 fc_host_post_event(shost, fc_get_event_number(), FCH_EVT_LINKDOWN, 0);
614
615 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
616 "Link Down: state:x%x rtry:x%x flg:x%x",
617 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
618
619 lpfc_port_link_failure(vport);
620
621 }
622
623 int
624 lpfc_linkdown(struct lpfc_hba *phba)
625 {
626 struct lpfc_vport *vport = phba->pport;
627 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
628 struct lpfc_vport **vports;
629 LPFC_MBOXQ_t *mb;
630 int i;
631
632 if (phba->link_state == LPFC_LINK_DOWN)
633 return 0;
634 spin_lock_irq(&phba->hbalock);
635 if (phba->link_state > LPFC_LINK_DOWN) {
636 phba->link_state = LPFC_LINK_DOWN;
637 phba->pport->fc_flag &= ~FC_LBIT;
638 }
639 spin_unlock_irq(&phba->hbalock);
640 vports = lpfc_create_vport_work_array(phba);
641 if (vports != NULL)
642 for(i = 0; i <= phba->max_vpi && vports[i] != NULL; i++) {
643 /* Issue a LINK DOWN event to all nodes */
644 lpfc_linkdown_port(vports[i]);
645 }
646 lpfc_destroy_vport_work_array(phba, vports);
647 /* Clean up any firmware default rpi's */
648 mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
649 if (mb) {
650 lpfc_unreg_did(phba, 0xffff, 0xffffffff, mb);
651 mb->vport = vport;
652 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
653 if (lpfc_sli_issue_mbox(phba, mb, MBX_NOWAIT)
654 == MBX_NOT_FINISHED) {
655 mempool_free(mb, phba->mbox_mem_pool);
656 }
657 }
658
659 /* Setup myDID for link up if we are in pt2pt mode */
660 if (phba->pport->fc_flag & FC_PT2PT) {
661 phba->pport->fc_myDID = 0;
662 mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
663 if (mb) {
664 lpfc_config_link(phba, mb);
665 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
666 mb->vport = vport;
667 if (lpfc_sli_issue_mbox(phba, mb, MBX_NOWAIT)
668 == MBX_NOT_FINISHED) {
669 mempool_free(mb, phba->mbox_mem_pool);
670 }
671 }
672 spin_lock_irq(shost->host_lock);
673 phba->pport->fc_flag &= ~(FC_PT2PT | FC_PT2PT_PLOGI);
674 spin_unlock_irq(shost->host_lock);
675 }
676
677 return 0;
678 }
679
680 static void
681 lpfc_linkup_cleanup_nodes(struct lpfc_vport *vport)
682 {
683 struct lpfc_nodelist *ndlp;
684
685 list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
686 if (!NLP_CHK_NODE_ACT(ndlp))
687 continue;
688 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
689 continue;
690 if (ndlp->nlp_type & NLP_FABRIC) {
691 /* On Linkup its safe to clean up the ndlp
692 * from Fabric connections.
693 */
694 if (ndlp->nlp_DID != Fabric_DID)
695 lpfc_unreg_rpi(vport, ndlp);
696 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
697 } else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) {
698 /* Fail outstanding IO now since device is
699 * marked for PLOGI.
700 */
701 lpfc_unreg_rpi(vport, ndlp);
702 }
703 }
704 }
705
706 static void
707 lpfc_linkup_port(struct lpfc_vport *vport)
708 {
709 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
710 struct lpfc_hba *phba = vport->phba;
711
712 if ((vport->load_flag & FC_UNLOADING) != 0)
713 return;
714
715 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
716 "Link Up: top:x%x speed:x%x flg:x%x",
717 phba->fc_topology, phba->fc_linkspeed, phba->link_flag);
718
719 /* If NPIV is not enabled, only bring the physical port up */
720 if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
721 (vport != phba->pport))
722 return;
723
724 fc_host_post_event(shost, fc_get_event_number(), FCH_EVT_LINKUP, 0);
725
726 spin_lock_irq(shost->host_lock);
727 vport->fc_flag &= ~(FC_PT2PT | FC_PT2PT_PLOGI | FC_ABORT_DISCOVERY |
728 FC_RSCN_MODE | FC_NLP_MORE | FC_RSCN_DISCOVERY);
729 vport->fc_flag |= FC_NDISC_ACTIVE;
730 vport->fc_ns_retry = 0;
731 spin_unlock_irq(shost->host_lock);
732
733 if (vport->fc_flag & FC_LBIT)
734 lpfc_linkup_cleanup_nodes(vport);
735
736 }
737
738 static int
739 lpfc_linkup(struct lpfc_hba *phba)
740 {
741 struct lpfc_vport **vports;
742 int i;
743
744 phba->link_state = LPFC_LINK_UP;
745
746 /* Unblock fabric iocbs if they are blocked */
747 clear_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags);
748 del_timer_sync(&phba->fabric_block_timer);
749
750 vports = lpfc_create_vport_work_array(phba);
751 if (vports != NULL)
752 for(i = 0; i <= phba->max_vpi && vports[i] != NULL; i++)
753 lpfc_linkup_port(vports[i]);
754 lpfc_destroy_vport_work_array(phba, vports);
755 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
756 lpfc_issue_clear_la(phba, phba->pport);
757
758 return 0;
759 }
760
761 /*
762 * This routine handles processing a CLEAR_LA mailbox
763 * command upon completion. It is setup in the LPFC_MBOXQ
764 * as the completion routine when the command is
765 * handed off to the SLI layer.
766 */
767 static void
768 lpfc_mbx_cmpl_clear_la(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
769 {
770 struct lpfc_vport *vport = pmb->vport;
771 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
772 struct lpfc_sli *psli = &phba->sli;
773 MAILBOX_t *mb = &pmb->mb;
774 uint32_t control;
775
776 /* Since we don't do discovery right now, turn these off here */
777 psli->ring[psli->extra_ring].flag &= ~LPFC_STOP_IOCB_EVENT;
778 psli->ring[psli->fcp_ring].flag &= ~LPFC_STOP_IOCB_EVENT;
779 psli->ring[psli->next_ring].flag &= ~LPFC_STOP_IOCB_EVENT;
780
781 /* Check for error */
782 if ((mb->mbxStatus) && (mb->mbxStatus != 0x1601)) {
783 /* CLEAR_LA mbox error <mbxStatus> state <hba_state> */
784 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
785 "0320 CLEAR_LA mbxStatus error x%x hba "
786 "state x%x\n",
787 mb->mbxStatus, vport->port_state);
788 phba->link_state = LPFC_HBA_ERROR;
789 goto out;
790 }
791
792 if (vport->port_type == LPFC_PHYSICAL_PORT)
793 phba->link_state = LPFC_HBA_READY;
794
795 spin_lock_irq(&phba->hbalock);
796 psli->sli_flag |= LPFC_PROCESS_LA;
797 control = readl(phba->HCregaddr);
798 control |= HC_LAINT_ENA;
799 writel(control, phba->HCregaddr);
800 readl(phba->HCregaddr); /* flush */
801 spin_unlock_irq(&phba->hbalock);
802 mempool_free(pmb, phba->mbox_mem_pool);
803 return;
804
805 out:
806 /* Device Discovery completes */
807 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
808 "0225 Device Discovery completes\n");
809 mempool_free(pmb, phba->mbox_mem_pool);
810
811 spin_lock_irq(shost->host_lock);
812 vport->fc_flag &= ~(FC_ABORT_DISCOVERY | FC_ESTABLISH_LINK);
813 spin_unlock_irq(shost->host_lock);
814
815 del_timer_sync(&phba->fc_estabtmo);
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->link_flag & LS_NPIV_FAB_SUPPORTED)
1344 lpfc_initial_fdisc(vports[i]);
1345 else if (phba->sli3_options &
1346 LPFC_SLI3_NPIV_ENABLED) {
1347 lpfc_vport_set_state(vports[i],
1348 FC_VPORT_NO_FABRIC_SUPP);
1349 lpfc_printf_vlog(vport, KERN_ERR,
1350 LOG_ELS,
1351 "0259 No NPIV "
1352 "Fabric support\n");
1353 }
1354 }
1355 lpfc_destroy_vport_work_array(phba, vports);
1356 lpfc_do_scr_ns_plogi(phba, vport);
1357 }
1358
1359 lpfc_mbuf_free(phba, mp->virt, mp->phys);
1360 kfree(mp);
1361 mempool_free(pmb, phba->mbox_mem_pool);
1362
1363 /* Drop the reference count from the mbox at the end after
1364 * all the current reference to the ndlp have been done.
1365 */
1366 lpfc_nlp_put(ndlp);
1367 return;
1368 }
1369
1370 /*
1371 * This routine handles processing a NameServer REG_LOGIN mailbox
1372 * command upon completion. It is setup in the LPFC_MBOXQ
1373 * as the completion routine when the command is
1374 * handed off to the SLI layer.
1375 */
1376 void
1377 lpfc_mbx_cmpl_ns_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1378 {
1379 MAILBOX_t *mb = &pmb->mb;
1380 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
1381 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2;
1382 struct lpfc_vport *vport = pmb->vport;
1383
1384 if (mb->mbxStatus) {
1385 out:
1386 /* decrement the node reference count held for this
1387 * callback function.
1388 */
1389 lpfc_nlp_put(ndlp);
1390 lpfc_mbuf_free(phba, mp->virt, mp->phys);
1391 kfree(mp);
1392 mempool_free(pmb, phba->mbox_mem_pool);
1393
1394 /* If no other thread is using the ndlp, free it */
1395 lpfc_nlp_not_used(ndlp);
1396
1397 if (phba->fc_topology == TOPOLOGY_LOOP) {
1398 /*
1399 * RegLogin failed, use loop map to make discovery
1400 * list
1401 */
1402 lpfc_disc_list_loopmap(vport);
1403
1404 /* Start discovery */
1405 lpfc_disc_start(vport);
1406 return;
1407 }
1408 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
1409 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1410 "0260 Register NameServer error: 0x%x\n",
1411 mb->mbxStatus);
1412 return;
1413 }
1414
1415 pmb->context1 = NULL;
1416
1417 ndlp->nlp_rpi = mb->un.varWords[0];
1418 ndlp->nlp_type |= NLP_FABRIC;
1419 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1420
1421 if (vport->port_state < LPFC_VPORT_READY) {
1422 /* Link up discovery requires Fabric registration. */
1423 lpfc_ns_cmd(vport, SLI_CTNS_RFF_ID, 0, 0); /* Do this first! */
1424 lpfc_ns_cmd(vport, SLI_CTNS_RNN_ID, 0, 0);
1425 lpfc_ns_cmd(vport, SLI_CTNS_RSNN_NN, 0, 0);
1426 lpfc_ns_cmd(vport, SLI_CTNS_RSPN_ID, 0, 0);
1427 lpfc_ns_cmd(vport, SLI_CTNS_RFT_ID, 0, 0);
1428
1429 /* Issue SCR just before NameServer GID_FT Query */
1430 lpfc_issue_els_scr(vport, SCR_DID, 0);
1431 }
1432
1433 vport->fc_ns_retry = 0;
1434 /* Good status, issue CT Request to NameServer */
1435 if (lpfc_ns_cmd(vport, SLI_CTNS_GID_FT, 0, 0)) {
1436 /* Cannot issue NameServer Query, so finish up discovery */
1437 goto out;
1438 }
1439
1440 /* decrement the node reference count held for this
1441 * callback function.
1442 */
1443 lpfc_nlp_put(ndlp);
1444 lpfc_mbuf_free(phba, mp->virt, mp->phys);
1445 kfree(mp);
1446 mempool_free(pmb, phba->mbox_mem_pool);
1447
1448 return;
1449 }
1450
1451 static void
1452 lpfc_register_remote_port(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
1453 {
1454 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1455 struct fc_rport *rport;
1456 struct lpfc_rport_data *rdata;
1457 struct fc_rport_identifiers rport_ids;
1458 struct lpfc_hba *phba = vport->phba;
1459
1460 /* Remote port has reappeared. Re-register w/ FC transport */
1461 rport_ids.node_name = wwn_to_u64(ndlp->nlp_nodename.u.wwn);
1462 rport_ids.port_name = wwn_to_u64(ndlp->nlp_portname.u.wwn);
1463 rport_ids.port_id = ndlp->nlp_DID;
1464 rport_ids.roles = FC_RPORT_ROLE_UNKNOWN;
1465
1466 /*
1467 * We leave our node pointer in rport->dd_data when we unregister a
1468 * FCP target port. But fc_remote_port_add zeros the space to which
1469 * rport->dd_data points. So, if we're reusing a previously
1470 * registered port, drop the reference that we took the last time we
1471 * registered the port.
1472 */
1473 if (ndlp->rport && ndlp->rport->dd_data &&
1474 ((struct lpfc_rport_data *) ndlp->rport->dd_data)->pnode == ndlp)
1475 lpfc_nlp_put(ndlp);
1476
1477 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
1478 "rport add: did:x%x flg:x%x type x%x",
1479 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
1480
1481 ndlp->rport = rport = fc_remote_port_add(shost, 0, &rport_ids);
1482 if (!rport || !get_device(&rport->dev)) {
1483 dev_printk(KERN_WARNING, &phba->pcidev->dev,
1484 "Warning: fc_remote_port_add failed\n");
1485 return;
1486 }
1487
1488 /* initialize static port data */
1489 rport->maxframe_size = ndlp->nlp_maxframe;
1490 rport->supported_classes = ndlp->nlp_class_sup;
1491 rdata = rport->dd_data;
1492 rdata->pnode = lpfc_nlp_get(ndlp);
1493
1494 if (ndlp->nlp_type & NLP_FCP_TARGET)
1495 rport_ids.roles |= FC_RPORT_ROLE_FCP_TARGET;
1496 if (ndlp->nlp_type & NLP_FCP_INITIATOR)
1497 rport_ids.roles |= FC_RPORT_ROLE_FCP_INITIATOR;
1498
1499
1500 if (rport_ids.roles != FC_RPORT_ROLE_UNKNOWN)
1501 fc_remote_port_rolechg(rport, rport_ids.roles);
1502
1503 if ((rport->scsi_target_id != -1) &&
1504 (rport->scsi_target_id < LPFC_MAX_TARGET)) {
1505 ndlp->nlp_sid = rport->scsi_target_id;
1506 }
1507 return;
1508 }
1509
1510 static void
1511 lpfc_unregister_remote_port(struct lpfc_nodelist *ndlp)
1512 {
1513 struct fc_rport *rport = ndlp->rport;
1514
1515 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_RPORT,
1516 "rport delete: did:x%x flg:x%x type x%x",
1517 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
1518
1519 fc_remote_port_delete(rport);
1520
1521 return;
1522 }
1523
1524 static void
1525 lpfc_nlp_counters(struct lpfc_vport *vport, int state, int count)
1526 {
1527 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1528
1529 spin_lock_irq(shost->host_lock);
1530 switch (state) {
1531 case NLP_STE_UNUSED_NODE:
1532 vport->fc_unused_cnt += count;
1533 break;
1534 case NLP_STE_PLOGI_ISSUE:
1535 vport->fc_plogi_cnt += count;
1536 break;
1537 case NLP_STE_ADISC_ISSUE:
1538 vport->fc_adisc_cnt += count;
1539 break;
1540 case NLP_STE_REG_LOGIN_ISSUE:
1541 vport->fc_reglogin_cnt += count;
1542 break;
1543 case NLP_STE_PRLI_ISSUE:
1544 vport->fc_prli_cnt += count;
1545 break;
1546 case NLP_STE_UNMAPPED_NODE:
1547 vport->fc_unmap_cnt += count;
1548 break;
1549 case NLP_STE_MAPPED_NODE:
1550 vport->fc_map_cnt += count;
1551 break;
1552 case NLP_STE_NPR_NODE:
1553 vport->fc_npr_cnt += count;
1554 break;
1555 }
1556 spin_unlock_irq(shost->host_lock);
1557 }
1558
1559 static void
1560 lpfc_nlp_state_cleanup(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1561 int old_state, int new_state)
1562 {
1563 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1564
1565 if (new_state == NLP_STE_UNMAPPED_NODE) {
1566 ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
1567 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE;
1568 ndlp->nlp_type |= NLP_FC_NODE;
1569 }
1570 if (new_state == NLP_STE_MAPPED_NODE)
1571 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE;
1572 if (new_state == NLP_STE_NPR_NODE)
1573 ndlp->nlp_flag &= ~NLP_RCV_PLOGI;
1574
1575 /* Transport interface */
1576 if (ndlp->rport && (old_state == NLP_STE_MAPPED_NODE ||
1577 old_state == NLP_STE_UNMAPPED_NODE)) {
1578 vport->phba->nport_event_cnt++;
1579 lpfc_unregister_remote_port(ndlp);
1580 }
1581
1582 if (new_state == NLP_STE_MAPPED_NODE ||
1583 new_state == NLP_STE_UNMAPPED_NODE) {
1584 vport->phba->nport_event_cnt++;
1585 /*
1586 * Tell the fc transport about the port, if we haven't
1587 * already. If we have, and it's a scsi entity, be
1588 * sure to unblock any attached scsi devices
1589 */
1590 lpfc_register_remote_port(vport, ndlp);
1591 }
1592 /*
1593 * if we added to Mapped list, but the remote port
1594 * registration failed or assigned a target id outside
1595 * our presentable range - move the node to the
1596 * Unmapped List
1597 */
1598 if (new_state == NLP_STE_MAPPED_NODE &&
1599 (!ndlp->rport ||
1600 ndlp->rport->scsi_target_id == -1 ||
1601 ndlp->rport->scsi_target_id >= LPFC_MAX_TARGET)) {
1602 spin_lock_irq(shost->host_lock);
1603 ndlp->nlp_flag |= NLP_TGT_NO_SCSIID;
1604 spin_unlock_irq(shost->host_lock);
1605 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1606 }
1607 }
1608
1609 static char *
1610 lpfc_nlp_state_name(char *buffer, size_t size, int state)
1611 {
1612 static char *states[] = {
1613 [NLP_STE_UNUSED_NODE] = "UNUSED",
1614 [NLP_STE_PLOGI_ISSUE] = "PLOGI",
1615 [NLP_STE_ADISC_ISSUE] = "ADISC",
1616 [NLP_STE_REG_LOGIN_ISSUE] = "REGLOGIN",
1617 [NLP_STE_PRLI_ISSUE] = "PRLI",
1618 [NLP_STE_UNMAPPED_NODE] = "UNMAPPED",
1619 [NLP_STE_MAPPED_NODE] = "MAPPED",
1620 [NLP_STE_NPR_NODE] = "NPR",
1621 };
1622
1623 if (state < NLP_STE_MAX_STATE && states[state])
1624 strlcpy(buffer, states[state], size);
1625 else
1626 snprintf(buffer, size, "unknown (%d)", state);
1627 return buffer;
1628 }
1629
1630 void
1631 lpfc_nlp_set_state(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1632 int state)
1633 {
1634 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1635 int old_state = ndlp->nlp_state;
1636 char name1[16], name2[16];
1637
1638 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
1639 "0904 NPort state transition x%06x, %s -> %s\n",
1640 ndlp->nlp_DID,
1641 lpfc_nlp_state_name(name1, sizeof(name1), old_state),
1642 lpfc_nlp_state_name(name2, sizeof(name2), state));
1643
1644 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
1645 "node statechg did:x%x old:%d ste:%d",
1646 ndlp->nlp_DID, old_state, state);
1647
1648 if (old_state == NLP_STE_NPR_NODE &&
1649 (ndlp->nlp_flag & NLP_DELAY_TMO) != 0 &&
1650 state != NLP_STE_NPR_NODE)
1651 lpfc_cancel_retry_delay_tmo(vport, ndlp);
1652 if (old_state == NLP_STE_UNMAPPED_NODE) {
1653 ndlp->nlp_flag &= ~NLP_TGT_NO_SCSIID;
1654 ndlp->nlp_type &= ~NLP_FC_NODE;
1655 }
1656
1657 if (list_empty(&ndlp->nlp_listp)) {
1658 spin_lock_irq(shost->host_lock);
1659 list_add_tail(&ndlp->nlp_listp, &vport->fc_nodes);
1660 spin_unlock_irq(shost->host_lock);
1661 } else if (old_state)
1662 lpfc_nlp_counters(vport, old_state, -1);
1663
1664 ndlp->nlp_state = state;
1665 lpfc_nlp_counters(vport, state, 1);
1666 lpfc_nlp_state_cleanup(vport, ndlp, old_state, state);
1667 }
1668
1669 void
1670 lpfc_enqueue_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
1671 {
1672 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1673
1674 if (list_empty(&ndlp->nlp_listp)) {
1675 spin_lock_irq(shost->host_lock);
1676 list_add_tail(&ndlp->nlp_listp, &vport->fc_nodes);
1677 spin_unlock_irq(shost->host_lock);
1678 }
1679 }
1680
1681 void
1682 lpfc_dequeue_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
1683 {
1684 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1685
1686 if ((ndlp->nlp_flag & NLP_DELAY_TMO) != 0)
1687 lpfc_cancel_retry_delay_tmo(vport, ndlp);
1688 if (ndlp->nlp_state && !list_empty(&ndlp->nlp_listp))
1689 lpfc_nlp_counters(vport, ndlp->nlp_state, -1);
1690 spin_lock_irq(shost->host_lock);
1691 list_del_init(&ndlp->nlp_listp);
1692 spin_unlock_irq(shost->host_lock);
1693 lpfc_nlp_state_cleanup(vport, ndlp, ndlp->nlp_state,
1694 NLP_STE_UNUSED_NODE);
1695 }
1696
1697 static void
1698 lpfc_disable_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
1699 {
1700 if ((ndlp->nlp_flag & NLP_DELAY_TMO) != 0)
1701 lpfc_cancel_retry_delay_tmo(vport, ndlp);
1702 if (ndlp->nlp_state && !list_empty(&ndlp->nlp_listp))
1703 lpfc_nlp_counters(vport, ndlp->nlp_state, -1);
1704 lpfc_nlp_state_cleanup(vport, ndlp, ndlp->nlp_state,
1705 NLP_STE_UNUSED_NODE);
1706 }
1707
1708 struct lpfc_nodelist *
1709 lpfc_enable_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1710 int state)
1711 {
1712 struct lpfc_hba *phba = vport->phba;
1713 uint32_t did;
1714 unsigned long flags;
1715
1716 if (!ndlp)
1717 return NULL;
1718
1719 spin_lock_irqsave(&phba->ndlp_lock, flags);
1720 /* The ndlp should not be in memory free mode */
1721 if (NLP_CHK_FREE_REQ(ndlp)) {
1722 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
1723 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE,
1724 "0277 lpfc_enable_node: ndlp:x%p "
1725 "usgmap:x%x refcnt:%d\n",
1726 (void *)ndlp, ndlp->nlp_usg_map,
1727 atomic_read(&ndlp->kref.refcount));
1728 return NULL;
1729 }
1730 /* The ndlp should not already be in active mode */
1731 if (NLP_CHK_NODE_ACT(ndlp)) {
1732 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
1733 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE,
1734 "0278 lpfc_enable_node: ndlp:x%p "
1735 "usgmap:x%x refcnt:%d\n",
1736 (void *)ndlp, ndlp->nlp_usg_map,
1737 atomic_read(&ndlp->kref.refcount));
1738 return NULL;
1739 }
1740
1741 /* Keep the original DID */
1742 did = ndlp->nlp_DID;
1743
1744 /* re-initialize ndlp except of ndlp linked list pointer */
1745 memset((((char *)ndlp) + sizeof (struct list_head)), 0,
1746 sizeof (struct lpfc_nodelist) - sizeof (struct list_head));
1747 INIT_LIST_HEAD(&ndlp->els_retry_evt.evt_listp);
1748 INIT_LIST_HEAD(&ndlp->dev_loss_evt.evt_listp);
1749 init_timer(&ndlp->nlp_delayfunc);
1750 ndlp->nlp_delayfunc.function = lpfc_els_retry_delay;
1751 ndlp->nlp_delayfunc.data = (unsigned long)ndlp;
1752 ndlp->nlp_DID = did;
1753 ndlp->vport = vport;
1754 ndlp->nlp_sid = NLP_NO_SID;
1755 /* ndlp management re-initialize */
1756 kref_init(&ndlp->kref);
1757 NLP_INT_NODE_ACT(ndlp);
1758
1759 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
1760
1761 if (state != NLP_STE_UNUSED_NODE)
1762 lpfc_nlp_set_state(vport, ndlp, state);
1763
1764 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
1765 "node enable: did:x%x",
1766 ndlp->nlp_DID, 0, 0);
1767 return ndlp;
1768 }
1769
1770 void
1771 lpfc_drop_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
1772 {
1773 /*
1774 * Use of lpfc_drop_node and UNUSED list: lpfc_drop_node should
1775 * be used if we wish to issue the "last" lpfc_nlp_put() to remove
1776 * the ndlp from the vport. The ndlp marked as UNUSED on the list
1777 * until ALL other outstanding threads have completed. We check
1778 * that the ndlp not already in the UNUSED state before we proceed.
1779 */
1780 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
1781 return;
1782 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNUSED_NODE);
1783 lpfc_nlp_put(ndlp);
1784 return;
1785 }
1786
1787 /*
1788 * Start / ReStart rescue timer for Discovery / RSCN handling
1789 */
1790 void
1791 lpfc_set_disctmo(struct lpfc_vport *vport)
1792 {
1793 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1794 struct lpfc_hba *phba = vport->phba;
1795 uint32_t tmo;
1796
1797 if (vport->port_state == LPFC_LOCAL_CFG_LINK) {
1798 /* For FAN, timeout should be greater then edtov */
1799 tmo = (((phba->fc_edtov + 999) / 1000) + 1);
1800 } else {
1801 /* Normal discovery timeout should be > then ELS/CT timeout
1802 * FC spec states we need 3 * ratov for CT requests
1803 */
1804 tmo = ((phba->fc_ratov * 3) + 3);
1805 }
1806
1807
1808 if (!timer_pending(&vport->fc_disctmo)) {
1809 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
1810 "set disc timer: tmo:x%x state:x%x flg:x%x",
1811 tmo, vport->port_state, vport->fc_flag);
1812 }
1813
1814 mod_timer(&vport->fc_disctmo, jiffies + HZ * tmo);
1815 spin_lock_irq(shost->host_lock);
1816 vport->fc_flag |= FC_DISC_TMO;
1817 spin_unlock_irq(shost->host_lock);
1818
1819 /* Start Discovery Timer state <hba_state> */
1820 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
1821 "0247 Start Discovery Timer state x%x "
1822 "Data: x%x x%lx x%x x%x\n",
1823 vport->port_state, tmo,
1824 (unsigned long)&vport->fc_disctmo, vport->fc_plogi_cnt,
1825 vport->fc_adisc_cnt);
1826
1827 return;
1828 }
1829
1830 /*
1831 * Cancel rescue timer for Discovery / RSCN handling
1832 */
1833 int
1834 lpfc_can_disctmo(struct lpfc_vport *vport)
1835 {
1836 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1837 unsigned long iflags;
1838
1839 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
1840 "can disc timer: state:x%x rtry:x%x flg:x%x",
1841 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
1842
1843 /* Turn off discovery timer if its running */
1844 if (vport->fc_flag & FC_DISC_TMO) {
1845 spin_lock_irqsave(shost->host_lock, iflags);
1846 vport->fc_flag &= ~FC_DISC_TMO;
1847 spin_unlock_irqrestore(shost->host_lock, iflags);
1848 del_timer_sync(&vport->fc_disctmo);
1849 spin_lock_irqsave(&vport->work_port_lock, iflags);
1850 vport->work_port_events &= ~WORKER_DISC_TMO;
1851 spin_unlock_irqrestore(&vport->work_port_lock, iflags);
1852 }
1853
1854 /* Cancel Discovery Timer state <hba_state> */
1855 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
1856 "0248 Cancel Discovery Timer state x%x "
1857 "Data: x%x x%x x%x\n",
1858 vport->port_state, vport->fc_flag,
1859 vport->fc_plogi_cnt, vport->fc_adisc_cnt);
1860 return 0;
1861 }
1862
1863 /*
1864 * Check specified ring for outstanding IOCB on the SLI queue
1865 * Return true if iocb matches the specified nport
1866 */
1867 int
1868 lpfc_check_sli_ndlp(struct lpfc_hba *phba,
1869 struct lpfc_sli_ring *pring,
1870 struct lpfc_iocbq *iocb,
1871 struct lpfc_nodelist *ndlp)
1872 {
1873 struct lpfc_sli *psli = &phba->sli;
1874 IOCB_t *icmd = &iocb->iocb;
1875 struct lpfc_vport *vport = ndlp->vport;
1876
1877 if (iocb->vport != vport)
1878 return 0;
1879
1880 if (pring->ringno == LPFC_ELS_RING) {
1881 switch (icmd->ulpCommand) {
1882 case CMD_GEN_REQUEST64_CR:
1883 if (icmd->ulpContext == (volatile ushort)ndlp->nlp_rpi)
1884 return 1;
1885 case CMD_ELS_REQUEST64_CR:
1886 if (icmd->un.elsreq64.remoteID == ndlp->nlp_DID)
1887 return 1;
1888 case CMD_XMIT_ELS_RSP64_CX:
1889 if (iocb->context1 == (uint8_t *) ndlp)
1890 return 1;
1891 }
1892 } else if (pring->ringno == psli->extra_ring) {
1893
1894 } else if (pring->ringno == psli->fcp_ring) {
1895 /* Skip match check if waiting to relogin to FCP target */
1896 if ((ndlp->nlp_type & NLP_FCP_TARGET) &&
1897 (ndlp->nlp_flag & NLP_DELAY_TMO)) {
1898 return 0;
1899 }
1900 if (icmd->ulpContext == (volatile ushort)ndlp->nlp_rpi) {
1901 return 1;
1902 }
1903 } else if (pring->ringno == psli->next_ring) {
1904
1905 }
1906 return 0;
1907 }
1908
1909 /*
1910 * Free resources / clean up outstanding I/Os
1911 * associated with nlp_rpi in the LPFC_NODELIST entry.
1912 */
1913 static int
1914 lpfc_no_rpi(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
1915 {
1916 LIST_HEAD(completions);
1917 struct lpfc_sli *psli;
1918 struct lpfc_sli_ring *pring;
1919 struct lpfc_iocbq *iocb, *next_iocb;
1920 IOCB_t *icmd;
1921 uint32_t rpi, i;
1922
1923 lpfc_fabric_abort_nport(ndlp);
1924
1925 /*
1926 * Everything that matches on txcmplq will be returned
1927 * by firmware with a no rpi error.
1928 */
1929 psli = &phba->sli;
1930 rpi = ndlp->nlp_rpi;
1931 if (rpi) {
1932 /* Now process each ring */
1933 for (i = 0; i < psli->num_rings; i++) {
1934 pring = &psli->ring[i];
1935
1936 spin_lock_irq(&phba->hbalock);
1937 list_for_each_entry_safe(iocb, next_iocb, &pring->txq,
1938 list) {
1939 /*
1940 * Check to see if iocb matches the nport we are
1941 * looking for
1942 */
1943 if ((lpfc_check_sli_ndlp(phba, pring, iocb,
1944 ndlp))) {
1945 /* It matches, so deque and call compl
1946 with an error */
1947 list_move_tail(&iocb->list,
1948 &completions);
1949 pring->txq_cnt--;
1950 }
1951 }
1952 spin_unlock_irq(&phba->hbalock);
1953 }
1954 }
1955
1956 while (!list_empty(&completions)) {
1957 iocb = list_get_first(&completions, struct lpfc_iocbq, list);
1958 list_del_init(&iocb->list);
1959
1960 if (!iocb->iocb_cmpl)
1961 lpfc_sli_release_iocbq(phba, iocb);
1962 else {
1963 icmd = &iocb->iocb;
1964 icmd->ulpStatus = IOSTAT_LOCAL_REJECT;
1965 icmd->un.ulpWord[4] = IOERR_SLI_ABORTED;
1966 (iocb->iocb_cmpl)(phba, iocb, iocb);
1967 }
1968 }
1969
1970 return 0;
1971 }
1972
1973 /*
1974 * Free rpi associated with LPFC_NODELIST entry.
1975 * This routine is called from lpfc_freenode(), when we are removing
1976 * a LPFC_NODELIST entry. It is also called if the driver initiates a
1977 * LOGO that completes successfully, and we are waiting to PLOGI back
1978 * to the remote NPort. In addition, it is called after we receive
1979 * and unsolicated ELS cmd, send back a rsp, the rsp completes and
1980 * we are waiting to PLOGI back to the remote NPort.
1981 */
1982 int
1983 lpfc_unreg_rpi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
1984 {
1985 struct lpfc_hba *phba = vport->phba;
1986 LPFC_MBOXQ_t *mbox;
1987 int rc;
1988
1989 if (ndlp->nlp_rpi) {
1990 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1991 if (mbox) {
1992 lpfc_unreg_login(phba, vport->vpi, ndlp->nlp_rpi, mbox);
1993 mbox->vport = vport;
1994 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1995 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
1996 if (rc == MBX_NOT_FINISHED)
1997 mempool_free(mbox, phba->mbox_mem_pool);
1998 }
1999 lpfc_no_rpi(phba, ndlp);
2000 ndlp->nlp_rpi = 0;
2001 return 1;
2002 }
2003 return 0;
2004 }
2005
2006 void
2007 lpfc_unreg_all_rpis(struct lpfc_vport *vport)
2008 {
2009 struct lpfc_hba *phba = vport->phba;
2010 LPFC_MBOXQ_t *mbox;
2011 int rc;
2012
2013 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2014 if (mbox) {
2015 lpfc_unreg_login(phba, vport->vpi, 0xffff, mbox);
2016 mbox->vport = vport;
2017 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
2018 mbox->context1 = NULL;
2019 rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO);
2020 if (rc == MBX_NOT_FINISHED) {
2021 mempool_free(mbox, phba->mbox_mem_pool);
2022 }
2023 }
2024 }
2025
2026 void
2027 lpfc_unreg_default_rpis(struct lpfc_vport *vport)
2028 {
2029 struct lpfc_hba *phba = vport->phba;
2030 LPFC_MBOXQ_t *mbox;
2031 int rc;
2032
2033 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2034 if (mbox) {
2035 lpfc_unreg_did(phba, vport->vpi, 0xffffffff, mbox);
2036 mbox->vport = vport;
2037 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
2038 mbox->context1 = NULL;
2039 rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO);
2040 if (rc == MBX_NOT_FINISHED) {
2041 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX | LOG_VPORT,
2042 "1815 Could not issue "
2043 "unreg_did (default rpis)\n");
2044 mempool_free(mbox, phba->mbox_mem_pool);
2045 }
2046 }
2047 }
2048
2049 /*
2050 * Free resources associated with LPFC_NODELIST entry
2051 * so it can be freed.
2052 */
2053 static int
2054 lpfc_cleanup_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
2055 {
2056 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2057 struct lpfc_hba *phba = vport->phba;
2058 LPFC_MBOXQ_t *mb, *nextmb;
2059 struct lpfc_dmabuf *mp;
2060
2061 /* Cleanup node for NPort <nlp_DID> */
2062 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
2063 "0900 Cleanup node for NPort x%x "
2064 "Data: x%x x%x x%x\n",
2065 ndlp->nlp_DID, ndlp->nlp_flag,
2066 ndlp->nlp_state, ndlp->nlp_rpi);
2067 if (NLP_CHK_FREE_REQ(ndlp)) {
2068 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE,
2069 "0280 lpfc_cleanup_node: ndlp:x%p "
2070 "usgmap:x%x refcnt:%d\n",
2071 (void *)ndlp, ndlp->nlp_usg_map,
2072 atomic_read(&ndlp->kref.refcount));
2073 lpfc_dequeue_node(vport, ndlp);
2074 } else {
2075 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE,
2076 "0281 lpfc_cleanup_node: ndlp:x%p "
2077 "usgmap:x%x refcnt:%d\n",
2078 (void *)ndlp, ndlp->nlp_usg_map,
2079 atomic_read(&ndlp->kref.refcount));
2080 lpfc_disable_node(vport, ndlp);
2081 }
2082
2083 /* cleanup any ndlp on mbox q waiting for reglogin cmpl */
2084 if ((mb = phba->sli.mbox_active)) {
2085 if ((mb->mb.mbxCommand == MBX_REG_LOGIN64) &&
2086 (ndlp == (struct lpfc_nodelist *) mb->context2)) {
2087 mb->context2 = NULL;
2088 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
2089 }
2090 }
2091
2092 spin_lock_irq(&phba->hbalock);
2093 list_for_each_entry_safe(mb, nextmb, &phba->sli.mboxq, list) {
2094 if ((mb->mb.mbxCommand == MBX_REG_LOGIN64) &&
2095 (ndlp == (struct lpfc_nodelist *) mb->context2)) {
2096 mp = (struct lpfc_dmabuf *) (mb->context1);
2097 if (mp) {
2098 __lpfc_mbuf_free(phba, mp->virt, mp->phys);
2099 kfree(mp);
2100 }
2101 list_del(&mb->list);
2102 mempool_free(mb, phba->mbox_mem_pool);
2103 /* We shall not invoke the lpfc_nlp_put to decrement
2104 * the ndlp reference count as we are in the process
2105 * of lpfc_nlp_release.
2106 */
2107 }
2108 }
2109 spin_unlock_irq(&phba->hbalock);
2110
2111 lpfc_els_abort(phba, ndlp);
2112
2113 spin_lock_irq(shost->host_lock);
2114 ndlp->nlp_flag &= ~NLP_DELAY_TMO;
2115 spin_unlock_irq(shost->host_lock);
2116
2117 ndlp->nlp_last_elscmd = 0;
2118 del_timer_sync(&ndlp->nlp_delayfunc);
2119
2120 if (!list_empty(&ndlp->els_retry_evt.evt_listp))
2121 list_del_init(&ndlp->els_retry_evt.evt_listp);
2122 if (!list_empty(&ndlp->dev_loss_evt.evt_listp))
2123 list_del_init(&ndlp->dev_loss_evt.evt_listp);
2124
2125 lpfc_unreg_rpi(vport, ndlp);
2126
2127 return 0;
2128 }
2129
2130 /*
2131 * Check to see if we can free the nlp back to the freelist.
2132 * If we are in the middle of using the nlp in the discovery state
2133 * machine, defer the free till we reach the end of the state machine.
2134 */
2135 static void
2136 lpfc_nlp_remove(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
2137 {
2138 struct lpfc_hba *phba = vport->phba;
2139 struct lpfc_rport_data *rdata;
2140 LPFC_MBOXQ_t *mbox;
2141 int rc;
2142
2143 if (ndlp->nlp_flag & NLP_DELAY_TMO) {
2144 lpfc_cancel_retry_delay_tmo(vport, ndlp);
2145 }
2146
2147 if (ndlp->nlp_flag & NLP_DEFER_RM && !ndlp->nlp_rpi) {
2148 /* For this case we need to cleanup the default rpi
2149 * allocated by the firmware.
2150 */
2151 if ((mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL))
2152 != NULL) {
2153 rc = lpfc_reg_login(phba, vport->vpi, ndlp->nlp_DID,
2154 (uint8_t *) &vport->fc_sparam, mbox, 0);
2155 if (rc) {
2156 mempool_free(mbox, phba->mbox_mem_pool);
2157 }
2158 else {
2159 mbox->mbox_flag |= LPFC_MBX_IMED_UNREG;
2160 mbox->mbox_cmpl = lpfc_mbx_cmpl_dflt_rpi;
2161 mbox->vport = vport;
2162 mbox->context2 = NULL;
2163 rc =lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
2164 if (rc == MBX_NOT_FINISHED) {
2165 mempool_free(mbox, phba->mbox_mem_pool);
2166 }
2167 }
2168 }
2169 }
2170 lpfc_cleanup_node(vport, ndlp);
2171
2172 /*
2173 * We can get here with a non-NULL ndlp->rport because when we
2174 * unregister a rport we don't break the rport/node linkage. So if we
2175 * do, make sure we don't leaving any dangling pointers behind.
2176 */
2177 if (ndlp->rport) {
2178 rdata = ndlp->rport->dd_data;
2179 rdata->pnode = NULL;
2180 ndlp->rport = NULL;
2181 }
2182 }
2183
2184 static int
2185 lpfc_matchdid(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2186 uint32_t did)
2187 {
2188 D_ID mydid, ndlpdid, matchdid;
2189
2190 if (did == Bcast_DID)
2191 return 0;
2192
2193 if (ndlp->nlp_DID == 0) {
2194 return 0;
2195 }
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 if (lpfc_rscn_payload_check(vport, did)) {
2306 /* If we've already recieved a PLOGI from this NPort
2307 * we don't need to try to discover it again.
2308 */
2309 if (ndlp->nlp_flag & NLP_RCV_PLOGI)
2310 return NULL;
2311
2312 spin_lock_irq(shost->host_lock);
2313 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
2314 spin_unlock_irq(shost->host_lock);
2315
2316 /* Since this node is marked for discovery,
2317 * delay timeout is not needed.
2318 */
2319 if (ndlp->nlp_flag & NLP_DELAY_TMO)
2320 lpfc_cancel_retry_delay_tmo(vport, ndlp);
2321 } else
2322 ndlp = NULL;
2323 } else {
2324 /* If we've already recieved a PLOGI from this NPort,
2325 * or we are already in the process of discovery on it,
2326 * we don't need to try to discover it again.
2327 */
2328 if (ndlp->nlp_state == NLP_STE_ADISC_ISSUE ||
2329 ndlp->nlp_state == NLP_STE_PLOGI_ISSUE ||
2330 ndlp->nlp_flag & NLP_RCV_PLOGI)
2331 return NULL;
2332 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2333 spin_lock_irq(shost->host_lock);
2334 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
2335 spin_unlock_irq(shost->host_lock);
2336 }
2337 return ndlp;
2338 }
2339
2340 /* Build a list of nodes to discover based on the loopmap */
2341 void
2342 lpfc_disc_list_loopmap(struct lpfc_vport *vport)
2343 {
2344 struct lpfc_hba *phba = vport->phba;
2345 int j;
2346 uint32_t alpa, index;
2347
2348 if (!lpfc_is_link_up(phba))
2349 return;
2350
2351 if (phba->fc_topology != TOPOLOGY_LOOP)
2352 return;
2353
2354 /* Check for loop map present or not */
2355 if (phba->alpa_map[0]) {
2356 for (j = 1; j <= phba->alpa_map[0]; j++) {
2357 alpa = phba->alpa_map[j];
2358 if (((vport->fc_myDID & 0xff) == alpa) || (alpa == 0))
2359 continue;
2360 lpfc_setup_disc_node(vport, alpa);
2361 }
2362 } else {
2363 /* No alpamap, so try all alpa's */
2364 for (j = 0; j < FC_MAXLOOP; j++) {
2365 /* If cfg_scan_down is set, start from highest
2366 * ALPA (0xef) to lowest (0x1).
2367 */
2368 if (vport->cfg_scan_down)
2369 index = j;
2370 else
2371 index = FC_MAXLOOP - j - 1;
2372 alpa = lpfcAlpaArray[index];
2373 if ((vport->fc_myDID & 0xff) == alpa)
2374 continue;
2375 lpfc_setup_disc_node(vport, alpa);
2376 }
2377 }
2378 return;
2379 }
2380
2381 void
2382 lpfc_issue_clear_la(struct lpfc_hba *phba, struct lpfc_vport *vport)
2383 {
2384 LPFC_MBOXQ_t *mbox;
2385 struct lpfc_sli *psli = &phba->sli;
2386 struct lpfc_sli_ring *extra_ring = &psli->ring[psli->extra_ring];
2387 struct lpfc_sli_ring *fcp_ring = &psli->ring[psli->fcp_ring];
2388 struct lpfc_sli_ring *next_ring = &psli->ring[psli->next_ring];
2389 int rc;
2390
2391 /*
2392 * if it's not a physical port or if we already send
2393 * clear_la then don't send it.
2394 */
2395 if ((phba->link_state >= LPFC_CLEAR_LA) ||
2396 (vport->port_type != LPFC_PHYSICAL_PORT))
2397 return;
2398
2399 /* Link up discovery */
2400 if ((mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL)) != NULL) {
2401 phba->link_state = LPFC_CLEAR_LA;
2402 lpfc_clear_la(phba, mbox);
2403 mbox->mbox_cmpl = lpfc_mbx_cmpl_clear_la;
2404 mbox->vport = vport;
2405 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
2406 if (rc == MBX_NOT_FINISHED) {
2407 mempool_free(mbox, phba->mbox_mem_pool);
2408 lpfc_disc_flush_list(vport);
2409 extra_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
2410 fcp_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
2411 next_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
2412 phba->link_state = LPFC_HBA_ERROR;
2413 }
2414 }
2415 }
2416
2417 /* Reg_vpi to tell firmware to resume normal operations */
2418 void
2419 lpfc_issue_reg_vpi(struct lpfc_hba *phba, struct lpfc_vport *vport)
2420 {
2421 LPFC_MBOXQ_t *regvpimbox;
2422
2423 regvpimbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2424 if (regvpimbox) {
2425 lpfc_reg_vpi(phba, vport->vpi, vport->fc_myDID, regvpimbox);
2426 regvpimbox->mbox_cmpl = lpfc_mbx_cmpl_reg_vpi;
2427 regvpimbox->vport = vport;
2428 if (lpfc_sli_issue_mbox(phba, regvpimbox, MBX_NOWAIT)
2429 == MBX_NOT_FINISHED) {
2430 mempool_free(regvpimbox, phba->mbox_mem_pool);
2431 }
2432 }
2433 }
2434
2435 /* Start Link up / RSCN discovery on NPR nodes */
2436 void
2437 lpfc_disc_start(struct lpfc_vport *vport)
2438 {
2439 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2440 struct lpfc_hba *phba = vport->phba;
2441 uint32_t num_sent;
2442 uint32_t clear_la_pending;
2443 int did_changed;
2444
2445 if (!lpfc_is_link_up(phba))
2446 return;
2447
2448 if (phba->link_state == LPFC_CLEAR_LA)
2449 clear_la_pending = 1;
2450 else
2451 clear_la_pending = 0;
2452
2453 if (vport->port_state < LPFC_VPORT_READY)
2454 vport->port_state = LPFC_DISC_AUTH;
2455
2456 lpfc_set_disctmo(vport);
2457
2458 if (vport->fc_prevDID == vport->fc_myDID)
2459 did_changed = 0;
2460 else
2461 did_changed = 1;
2462
2463 vport->fc_prevDID = vport->fc_myDID;
2464 vport->num_disc_nodes = 0;
2465
2466 /* Start Discovery state <hba_state> */
2467 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2468 "0202 Start Discovery hba state x%x "
2469 "Data: x%x x%x x%x\n",
2470 vport->port_state, vport->fc_flag, vport->fc_plogi_cnt,
2471 vport->fc_adisc_cnt);
2472
2473 /* First do ADISCs - if any */
2474 num_sent = lpfc_els_disc_adisc(vport);
2475
2476 if (num_sent)
2477 return;
2478
2479 /*
2480 * For SLI3, cmpl_reg_vpi will set port_state to READY, and
2481 * continue discovery.
2482 */
2483 if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
2484 !(vport->fc_flag & FC_PT2PT) &&
2485 !(vport->fc_flag & FC_RSCN_MODE)) {
2486 lpfc_issue_reg_vpi(phba, vport);
2487 return;
2488 }
2489
2490 /*
2491 * For SLI2, we need to set port_state to READY and continue
2492 * discovery.
2493 */
2494 if (vport->port_state < LPFC_VPORT_READY && !clear_la_pending) {
2495 /* If we get here, there is nothing to ADISC */
2496 if (vport->port_type == LPFC_PHYSICAL_PORT)
2497 lpfc_issue_clear_la(phba, vport);
2498
2499 if (!(vport->fc_flag & FC_ABORT_DISCOVERY)) {
2500 vport->num_disc_nodes = 0;
2501 /* go thru NPR nodes and issue ELS PLOGIs */
2502 if (vport->fc_npr_cnt)
2503 lpfc_els_disc_plogi(vport);
2504
2505 if (!vport->num_disc_nodes) {
2506 spin_lock_irq(shost->host_lock);
2507 vport->fc_flag &= ~FC_NDISC_ACTIVE;
2508 spin_unlock_irq(shost->host_lock);
2509 lpfc_can_disctmo(vport);
2510 }
2511 }
2512 vport->port_state = LPFC_VPORT_READY;
2513 } else {
2514 /* Next do PLOGIs - if any */
2515 num_sent = lpfc_els_disc_plogi(vport);
2516
2517 if (num_sent)
2518 return;
2519
2520 if (vport->fc_flag & FC_RSCN_MODE) {
2521 /* Check to see if more RSCNs came in while we
2522 * were processing this one.
2523 */
2524 if ((vport->fc_rscn_id_cnt == 0) &&
2525 (!(vport->fc_flag & FC_RSCN_DISCOVERY))) {
2526 spin_lock_irq(shost->host_lock);
2527 vport->fc_flag &= ~FC_RSCN_MODE;
2528 spin_unlock_irq(shost->host_lock);
2529 lpfc_can_disctmo(vport);
2530 } else
2531 lpfc_els_handle_rscn(vport);
2532 }
2533 }
2534 return;
2535 }
2536
2537 /*
2538 * Ignore completion for all IOCBs on tx and txcmpl queue for ELS
2539 * ring the match the sppecified nodelist.
2540 */
2541 static void
2542 lpfc_free_tx(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
2543 {
2544 LIST_HEAD(completions);
2545 struct lpfc_sli *psli;
2546 IOCB_t *icmd;
2547 struct lpfc_iocbq *iocb, *next_iocb;
2548 struct lpfc_sli_ring *pring;
2549
2550 psli = &phba->sli;
2551 pring = &psli->ring[LPFC_ELS_RING];
2552
2553 /* Error matching iocb on txq or txcmplq
2554 * First check the txq.
2555 */
2556 spin_lock_irq(&phba->hbalock);
2557 list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
2558 if (iocb->context1 != ndlp) {
2559 continue;
2560 }
2561 icmd = &iocb->iocb;
2562 if ((icmd->ulpCommand == CMD_ELS_REQUEST64_CR) ||
2563 (icmd->ulpCommand == CMD_XMIT_ELS_RSP64_CX)) {
2564
2565 list_move_tail(&iocb->list, &completions);
2566 pring->txq_cnt--;
2567 }
2568 }
2569
2570 /* Next check the txcmplq */
2571 list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) {
2572 if (iocb->context1 != ndlp) {
2573 continue;
2574 }
2575 icmd = &iocb->iocb;
2576 if (icmd->ulpCommand == CMD_ELS_REQUEST64_CR ||
2577 icmd->ulpCommand == CMD_XMIT_ELS_RSP64_CX) {
2578 lpfc_sli_issue_abort_iotag(phba, pring, iocb);
2579 }
2580 }
2581 spin_unlock_irq(&phba->hbalock);
2582
2583 while (!list_empty(&completions)) {
2584 iocb = list_get_first(&completions, struct lpfc_iocbq, list);
2585 list_del_init(&iocb->list);
2586
2587 if (!iocb->iocb_cmpl)
2588 lpfc_sli_release_iocbq(phba, iocb);
2589 else {
2590 icmd = &iocb->iocb;
2591 icmd->ulpStatus = IOSTAT_LOCAL_REJECT;
2592 icmd->un.ulpWord[4] = IOERR_SLI_ABORTED;
2593 (iocb->iocb_cmpl) (phba, iocb, iocb);
2594 }
2595 }
2596 }
2597
2598 static void
2599 lpfc_disc_flush_list(struct lpfc_vport *vport)
2600 {
2601 struct lpfc_nodelist *ndlp, *next_ndlp;
2602 struct lpfc_hba *phba = vport->phba;
2603
2604 if (vport->fc_plogi_cnt || vport->fc_adisc_cnt) {
2605 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes,
2606 nlp_listp) {
2607 if (!NLP_CHK_NODE_ACT(ndlp))
2608 continue;
2609 if (ndlp->nlp_state == NLP_STE_PLOGI_ISSUE ||
2610 ndlp->nlp_state == NLP_STE_ADISC_ISSUE) {
2611 lpfc_free_tx(phba, ndlp);
2612 }
2613 }
2614 }
2615 }
2616
2617 void
2618 lpfc_cleanup_discovery_resources(struct lpfc_vport *vport)
2619 {
2620 lpfc_els_flush_rscn(vport);
2621 lpfc_els_flush_cmd(vport);
2622 lpfc_disc_flush_list(vport);
2623 }
2624
2625 /*****************************************************************************/
2626 /*
2627 * NAME: lpfc_disc_timeout
2628 *
2629 * FUNCTION: Fibre Channel driver discovery timeout routine.
2630 *
2631 * EXECUTION ENVIRONMENT: interrupt only
2632 *
2633 * CALLED FROM:
2634 * Timer function
2635 *
2636 * RETURNS:
2637 * none
2638 */
2639 /*****************************************************************************/
2640 void
2641 lpfc_disc_timeout(unsigned long ptr)
2642 {
2643 struct lpfc_vport *vport = (struct lpfc_vport *) ptr;
2644 struct lpfc_hba *phba = vport->phba;
2645 unsigned long flags = 0;
2646
2647 if (unlikely(!phba))
2648 return;
2649
2650 if ((vport->work_port_events & WORKER_DISC_TMO) == 0) {
2651 spin_lock_irqsave(&vport->work_port_lock, flags);
2652 vport->work_port_events |= WORKER_DISC_TMO;
2653 spin_unlock_irqrestore(&vport->work_port_lock, flags);
2654
2655 spin_lock_irqsave(&phba->hbalock, flags);
2656 if (phba->work_wait)
2657 lpfc_worker_wake_up(phba);
2658 spin_unlock_irqrestore(&phba->hbalock, flags);
2659 }
2660 return;
2661 }
2662
2663 static void
2664 lpfc_disc_timeout_handler(struct lpfc_vport *vport)
2665 {
2666 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2667 struct lpfc_hba *phba = vport->phba;
2668 struct lpfc_sli *psli = &phba->sli;
2669 struct lpfc_nodelist *ndlp, *next_ndlp;
2670 LPFC_MBOXQ_t *initlinkmbox;
2671 int rc, clrlaerr = 0;
2672
2673 if (!(vport->fc_flag & FC_DISC_TMO))
2674 return;
2675
2676 spin_lock_irq(shost->host_lock);
2677 vport->fc_flag &= ~FC_DISC_TMO;
2678 spin_unlock_irq(shost->host_lock);
2679
2680 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
2681 "disc timeout: state:x%x rtry:x%x flg:x%x",
2682 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
2683
2684 switch (vport->port_state) {
2685
2686 case LPFC_LOCAL_CFG_LINK:
2687 /* port_state is identically LPFC_LOCAL_CFG_LINK while waiting for
2688 * FAN
2689 */
2690 /* FAN timeout */
2691 lpfc_printf_vlog(vport, KERN_WARNING, LOG_DISCOVERY,
2692 "0221 FAN timeout\n");
2693 /* Start discovery by sending FLOGI, clean up old rpis */
2694 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes,
2695 nlp_listp) {
2696 if (!NLP_CHK_NODE_ACT(ndlp))
2697 continue;
2698 if (ndlp->nlp_state != NLP_STE_NPR_NODE)
2699 continue;
2700 if (ndlp->nlp_type & NLP_FABRIC) {
2701 /* Clean up the ndlp on Fabric connections */
2702 lpfc_drop_node(vport, ndlp);
2703
2704 } else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) {
2705 /* Fail outstanding IO now since device
2706 * is marked for PLOGI.
2707 */
2708 lpfc_unreg_rpi(vport, ndlp);
2709 }
2710 }
2711 if (vport->port_state != LPFC_FLOGI) {
2712 lpfc_initial_flogi(vport);
2713 return;
2714 }
2715 break;
2716
2717 case LPFC_FDISC:
2718 case LPFC_FLOGI:
2719 /* port_state is identically LPFC_FLOGI while waiting for FLOGI cmpl */
2720 /* Initial FLOGI timeout */
2721 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2722 "0222 Initial %s timeout\n",
2723 vport->vpi ? "FDISC" : "FLOGI");
2724
2725 /* Assume no Fabric and go on with discovery.
2726 * Check for outstanding ELS FLOGI to abort.
2727 */
2728
2729 /* FLOGI failed, so just use loop map to make discovery list */
2730 lpfc_disc_list_loopmap(vport);
2731
2732 /* Start discovery */
2733 lpfc_disc_start(vport);
2734 break;
2735
2736 case LPFC_FABRIC_CFG_LINK:
2737 /* hba_state is identically LPFC_FABRIC_CFG_LINK while waiting for
2738 NameServer login */
2739 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2740 "0223 Timeout while waiting for "
2741 "NameServer login\n");
2742 /* Next look for NameServer ndlp */
2743 ndlp = lpfc_findnode_did(vport, NameServer_DID);
2744 if (ndlp && NLP_CHK_NODE_ACT(ndlp))
2745 lpfc_els_abort(phba, ndlp);
2746
2747 /* ReStart discovery */
2748 goto restart_disc;
2749
2750 case LPFC_NS_QRY:
2751 /* Check for wait for NameServer Rsp timeout */
2752 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2753 "0224 NameServer Query timeout "
2754 "Data: x%x x%x\n",
2755 vport->fc_ns_retry, LPFC_MAX_NS_RETRY);
2756
2757 if (vport->fc_ns_retry < LPFC_MAX_NS_RETRY) {
2758 /* Try it one more time */
2759 vport->fc_ns_retry++;
2760 rc = lpfc_ns_cmd(vport, SLI_CTNS_GID_FT,
2761 vport->fc_ns_retry, 0);
2762 if (rc == 0)
2763 break;
2764 }
2765 vport->fc_ns_retry = 0;
2766
2767 restart_disc:
2768 /*
2769 * Discovery is over.
2770 * set port_state to PORT_READY if SLI2.
2771 * cmpl_reg_vpi will set port_state to READY for SLI3.
2772 */
2773 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
2774 lpfc_issue_reg_vpi(phba, vport);
2775 else { /* NPIV Not enabled */
2776 lpfc_issue_clear_la(phba, vport);
2777 vport->port_state = LPFC_VPORT_READY;
2778 }
2779
2780 /* Setup and issue mailbox INITIALIZE LINK command */
2781 initlinkmbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2782 if (!initlinkmbox) {
2783 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2784 "0206 Device Discovery "
2785 "completion error\n");
2786 phba->link_state = LPFC_HBA_ERROR;
2787 break;
2788 }
2789
2790 lpfc_linkdown(phba);
2791 lpfc_init_link(phba, initlinkmbox, phba->cfg_topology,
2792 phba->cfg_link_speed);
2793 initlinkmbox->mb.un.varInitLnk.lipsr_AL_PA = 0;
2794 initlinkmbox->vport = vport;
2795 initlinkmbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
2796 rc = lpfc_sli_issue_mbox(phba, initlinkmbox, MBX_NOWAIT);
2797 lpfc_set_loopback_flag(phba);
2798 if (rc == MBX_NOT_FINISHED)
2799 mempool_free(initlinkmbox, phba->mbox_mem_pool);
2800
2801 break;
2802
2803 case LPFC_DISC_AUTH:
2804 /* Node Authentication timeout */
2805 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2806 "0227 Node Authentication timeout\n");
2807 lpfc_disc_flush_list(vport);
2808
2809 /*
2810 * set port_state to PORT_READY if SLI2.
2811 * cmpl_reg_vpi will set port_state to READY for SLI3.
2812 */
2813 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
2814 lpfc_issue_reg_vpi(phba, vport);
2815 else { /* NPIV Not enabled */
2816 lpfc_issue_clear_la(phba, vport);
2817 vport->port_state = LPFC_VPORT_READY;
2818 }
2819 break;
2820
2821 case LPFC_VPORT_READY:
2822 if (vport->fc_flag & FC_RSCN_MODE) {
2823 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2824 "0231 RSCN timeout Data: x%x "
2825 "x%x\n",
2826 vport->fc_ns_retry, LPFC_MAX_NS_RETRY);
2827
2828 /* Cleanup any outstanding ELS commands */
2829 lpfc_els_flush_cmd(vport);
2830
2831 lpfc_els_flush_rscn(vport);
2832 lpfc_disc_flush_list(vport);
2833 }
2834 break;
2835
2836 default:
2837 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2838 "0229 Unexpected discovery timeout, "
2839 "vport State x%x\n", vport->port_state);
2840 break;
2841 }
2842
2843 switch (phba->link_state) {
2844 case LPFC_CLEAR_LA:
2845 /* CLEAR LA timeout */
2846 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2847 "0228 CLEAR LA timeout\n");
2848 clrlaerr = 1;
2849 break;
2850
2851 case LPFC_LINK_UP:
2852 lpfc_issue_clear_la(phba, vport);
2853 /* Drop thru */
2854 case LPFC_LINK_UNKNOWN:
2855 case LPFC_WARM_START:
2856 case LPFC_INIT_START:
2857 case LPFC_INIT_MBX_CMDS:
2858 case LPFC_LINK_DOWN:
2859 case LPFC_HBA_ERROR:
2860 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2861 "0230 Unexpected timeout, hba link "
2862 "state x%x\n", phba->link_state);
2863 clrlaerr = 1;
2864 break;
2865
2866 case LPFC_HBA_READY:
2867 break;
2868 }
2869
2870 if (clrlaerr) {
2871 lpfc_disc_flush_list(vport);
2872 psli->ring[(psli->extra_ring)].flag &= ~LPFC_STOP_IOCB_EVENT;
2873 psli->ring[(psli->fcp_ring)].flag &= ~LPFC_STOP_IOCB_EVENT;
2874 psli->ring[(psli->next_ring)].flag &= ~LPFC_STOP_IOCB_EVENT;
2875 vport->port_state = LPFC_VPORT_READY;
2876 }
2877
2878 return;
2879 }
2880
2881 /*
2882 * This routine handles processing a NameServer REG_LOGIN mailbox
2883 * command upon completion. It is setup in the LPFC_MBOXQ
2884 * as the completion routine when the command is
2885 * handed off to the SLI layer.
2886 */
2887 void
2888 lpfc_mbx_cmpl_fdmi_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
2889 {
2890 MAILBOX_t *mb = &pmb->mb;
2891 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
2892 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2;
2893 struct lpfc_vport *vport = pmb->vport;
2894
2895 pmb->context1 = NULL;
2896
2897 ndlp->nlp_rpi = mb->un.varWords[0];
2898 ndlp->nlp_type |= NLP_FABRIC;
2899 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
2900
2901 /*
2902 * Start issuing Fabric-Device Management Interface (FDMI) command to
2903 * 0xfffffa (FDMI well known port) or Delay issuing FDMI command if
2904 * fdmi-on=2 (supporting RPA/hostnmae)
2905 */
2906
2907 if (vport->cfg_fdmi_on == 1)
2908 lpfc_fdmi_cmd(vport, ndlp, SLI_MGMT_DHBA);
2909 else
2910 mod_timer(&vport->fc_fdmitmo, jiffies + HZ * 60);
2911
2912 /* decrement the node reference count held for this callback
2913 * function.
2914 */
2915 lpfc_nlp_put(ndlp);
2916 lpfc_mbuf_free(phba, mp->virt, mp->phys);
2917 kfree(mp);
2918 mempool_free(pmb, phba->mbox_mem_pool);
2919
2920 return;
2921 }
2922
2923 static int
2924 lpfc_filter_by_rpi(struct lpfc_nodelist *ndlp, void *param)
2925 {
2926 uint16_t *rpi = param;
2927
2928 return ndlp->nlp_rpi == *rpi;
2929 }
2930
2931 static int
2932 lpfc_filter_by_wwpn(struct lpfc_nodelist *ndlp, void *param)
2933 {
2934 return memcmp(&ndlp->nlp_portname, param,
2935 sizeof(ndlp->nlp_portname)) == 0;
2936 }
2937
2938 static struct lpfc_nodelist *
2939 __lpfc_find_node(struct lpfc_vport *vport, node_filter filter, void *param)
2940 {
2941 struct lpfc_nodelist *ndlp;
2942
2943 list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
2944 if (filter(ndlp, param))
2945 return ndlp;
2946 }
2947 return NULL;
2948 }
2949
2950 #if 0
2951 /*
2952 * Search node lists for a remote port matching filter criteria
2953 * Caller needs to hold host_lock before calling this routine.
2954 */
2955 struct lpfc_nodelist *
2956 lpfc_find_node(struct lpfc_vport *vport, node_filter filter, void *param)
2957 {
2958 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2959 struct lpfc_nodelist *ndlp;
2960
2961 spin_lock_irq(shost->host_lock);
2962 ndlp = __lpfc_find_node(vport, filter, param);
2963 spin_unlock_irq(shost->host_lock);
2964 return ndlp;
2965 }
2966 #endif /* 0 */
2967
2968 /*
2969 * This routine looks up the ndlp lists for the given RPI. If rpi found it
2970 * returns the node list element pointer else return NULL.
2971 */
2972 struct lpfc_nodelist *
2973 __lpfc_findnode_rpi(struct lpfc_vport *vport, uint16_t rpi)
2974 {
2975 return __lpfc_find_node(vport, lpfc_filter_by_rpi, &rpi);
2976 }
2977
2978 #if 0
2979 struct lpfc_nodelist *
2980 lpfc_findnode_rpi(struct lpfc_vport *vport, uint16_t rpi)
2981 {
2982 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2983 struct lpfc_nodelist *ndlp;
2984
2985 spin_lock_irq(shost->host_lock);
2986 ndlp = __lpfc_findnode_rpi(vport, rpi);
2987 spin_unlock_irq(shost->host_lock);
2988 return ndlp;
2989 }
2990 #endif /* 0 */
2991
2992 /*
2993 * This routine looks up the ndlp lists for the given WWPN. If WWPN found it
2994 * returns the node element list pointer else return NULL.
2995 */
2996 struct lpfc_nodelist *
2997 lpfc_findnode_wwpn(struct lpfc_vport *vport, struct lpfc_name *wwpn)
2998 {
2999 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3000 struct lpfc_nodelist *ndlp;
3001
3002 spin_lock_irq(shost->host_lock);
3003 ndlp = __lpfc_find_node(vport, lpfc_filter_by_wwpn, wwpn);
3004 spin_unlock_irq(shost->host_lock);
3005 return ndlp;
3006 }
3007
3008 void
3009 lpfc_nlp_init(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
3010 uint32_t did)
3011 {
3012 memset(ndlp, 0, sizeof (struct lpfc_nodelist));
3013 INIT_LIST_HEAD(&ndlp->els_retry_evt.evt_listp);
3014 INIT_LIST_HEAD(&ndlp->dev_loss_evt.evt_listp);
3015 init_timer(&ndlp->nlp_delayfunc);
3016 ndlp->nlp_delayfunc.function = lpfc_els_retry_delay;
3017 ndlp->nlp_delayfunc.data = (unsigned long)ndlp;
3018 ndlp->nlp_DID = did;
3019 ndlp->vport = vport;
3020 ndlp->nlp_sid = NLP_NO_SID;
3021 INIT_LIST_HEAD(&ndlp->nlp_listp);
3022 kref_init(&ndlp->kref);
3023 NLP_INT_NODE_ACT(ndlp);
3024
3025 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
3026 "node init: did:x%x",
3027 ndlp->nlp_DID, 0, 0);
3028
3029 return;
3030 }
3031
3032 /* This routine releases all resources associated with a specifc NPort's ndlp
3033 * and mempool_free's the nodelist.
3034 */
3035 static void
3036 lpfc_nlp_release(struct kref *kref)
3037 {
3038 struct lpfc_hba *phba;
3039 unsigned long flags;
3040 struct lpfc_nodelist *ndlp = container_of(kref, struct lpfc_nodelist,
3041 kref);
3042
3043 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
3044 "node release: did:x%x flg:x%x type:x%x",
3045 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
3046
3047 lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE,
3048 "0279 lpfc_nlp_release: ndlp:x%p "
3049 "usgmap:x%x refcnt:%d\n",
3050 (void *)ndlp, ndlp->nlp_usg_map,
3051 atomic_read(&ndlp->kref.refcount));
3052
3053 /* remove ndlp from action. */
3054 lpfc_nlp_remove(ndlp->vport, ndlp);
3055
3056 /* clear the ndlp active flag for all release cases */
3057 phba = ndlp->vport->phba;
3058 spin_lock_irqsave(&phba->ndlp_lock, flags);
3059 NLP_CLR_NODE_ACT(ndlp);
3060 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
3061
3062 /* free ndlp memory for final ndlp release */
3063 if (NLP_CHK_FREE_REQ(ndlp))
3064 mempool_free(ndlp, ndlp->vport->phba->nlp_mem_pool);
3065 }
3066
3067 /* This routine bumps the reference count for a ndlp structure to ensure
3068 * that one discovery thread won't free a ndlp while another discovery thread
3069 * is using it.
3070 */
3071 struct lpfc_nodelist *
3072 lpfc_nlp_get(struct lpfc_nodelist *ndlp)
3073 {
3074 struct lpfc_hba *phba;
3075 unsigned long flags;
3076
3077 if (ndlp) {
3078 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
3079 "node get: did:x%x flg:x%x refcnt:x%x",
3080 ndlp->nlp_DID, ndlp->nlp_flag,
3081 atomic_read(&ndlp->kref.refcount));
3082 /* The check of ndlp usage to prevent incrementing the
3083 * ndlp reference count that is in the process of being
3084 * released.
3085 */
3086 phba = ndlp->vport->phba;
3087 spin_lock_irqsave(&phba->ndlp_lock, flags);
3088 if (!NLP_CHK_NODE_ACT(ndlp) || NLP_CHK_FREE_ACK(ndlp)) {
3089 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
3090 lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_NODE,
3091 "0276 lpfc_nlp_get: ndlp:x%p "
3092 "usgmap:x%x refcnt:%d\n",
3093 (void *)ndlp, ndlp->nlp_usg_map,
3094 atomic_read(&ndlp->kref.refcount));
3095 return NULL;
3096 } else
3097 kref_get(&ndlp->kref);
3098 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
3099 }
3100 return ndlp;
3101 }
3102
3103 /* This routine decrements the reference count for a ndlp structure. If the
3104 * count goes to 0, this indicates the the associated nodelist should be
3105 * freed. Returning 1 indicates the ndlp resource has been released; on the
3106 * other hand, returning 0 indicates the ndlp resource has not been released
3107 * yet.
3108 */
3109 int
3110 lpfc_nlp_put(struct lpfc_nodelist *ndlp)
3111 {
3112 struct lpfc_hba *phba;
3113 unsigned long flags;
3114
3115 if (!ndlp)
3116 return 1;
3117
3118 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
3119 "node put: did:x%x flg:x%x refcnt:x%x",
3120 ndlp->nlp_DID, ndlp->nlp_flag,
3121 atomic_read(&ndlp->kref.refcount));
3122 phba = ndlp->vport->phba;
3123 spin_lock_irqsave(&phba->ndlp_lock, flags);
3124 /* Check the ndlp memory free acknowledge flag to avoid the
3125 * possible race condition that kref_put got invoked again
3126 * after previous one has done ndlp memory free.
3127 */
3128 if (NLP_CHK_FREE_ACK(ndlp)) {
3129 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
3130 lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_NODE,
3131 "0274 lpfc_nlp_put: ndlp:x%p "
3132 "usgmap:x%x refcnt:%d\n",
3133 (void *)ndlp, ndlp->nlp_usg_map,
3134 atomic_read(&ndlp->kref.refcount));
3135 return 1;
3136 }
3137 /* Check the ndlp inactivate log flag to avoid the possible
3138 * race condition that kref_put got invoked again after ndlp
3139 * is already in inactivating state.
3140 */
3141 if (NLP_CHK_IACT_REQ(ndlp)) {
3142 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
3143 lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_NODE,
3144 "0275 lpfc_nlp_put: ndlp:x%p "
3145 "usgmap:x%x refcnt:%d\n",
3146 (void *)ndlp, ndlp->nlp_usg_map,
3147 atomic_read(&ndlp->kref.refcount));
3148 return 1;
3149 }
3150 /* For last put, mark the ndlp usage flags to make sure no
3151 * other kref_get and kref_put on the same ndlp shall get
3152 * in between the process when the final kref_put has been
3153 * invoked on this ndlp.
3154 */
3155 if (atomic_read(&ndlp->kref.refcount) == 1) {
3156 /* Indicate ndlp is put to inactive state. */
3157 NLP_SET_IACT_REQ(ndlp);
3158 /* Acknowledge ndlp memory free has been seen. */
3159 if (NLP_CHK_FREE_REQ(ndlp))
3160 NLP_SET_FREE_ACK(ndlp);
3161 }
3162 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
3163 /* Note, the kref_put returns 1 when decrementing a reference
3164 * count that was 1, it invokes the release callback function,
3165 * but it still left the reference count as 1 (not actually
3166 * performs the last decrementation). Otherwise, it actually
3167 * decrements the reference count and returns 0.
3168 */
3169 return kref_put(&ndlp->kref, lpfc_nlp_release);
3170 }
3171
3172 /* This routine free's the specified nodelist if it is not in use
3173 * by any other discovery thread. This routine returns 1 if the
3174 * ndlp has been freed. A return value of 0 indicates the ndlp is
3175 * not yet been released.
3176 */
3177 int
3178 lpfc_nlp_not_used(struct lpfc_nodelist *ndlp)
3179 {
3180 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
3181 "node not used: did:x%x flg:x%x refcnt:x%x",
3182 ndlp->nlp_DID, ndlp->nlp_flag,
3183 atomic_read(&ndlp->kref.refcount));
3184 if (atomic_read(&ndlp->kref.refcount) == 1)
3185 if (lpfc_nlp_put(ndlp))
3186 return 1;
3187 return 0;
3188 }
WRT350N Kernel Patches