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V4L/DVB (8866): Add dummy FE to the Kconfig-file and fix it
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / scsi / lpfc / lpfc_hbadisc.c
bloba98d11bf35767dbf5e3b6df9b8b5bc483616a597
1 /*******************************************************************
2 * This file is part of the Emulex Linux Device Driver for *
3 * Fibre Channel Host Bus Adapters. *
4 * Copyright (C) 2004-2008 Emulex. All rights reserved. *
5 * EMULEX and SLI are trademarks of Emulex. *
6 * www.emulex.com *
7 * Portions Copyright (C) 2004-2005 Christoph Hellwig *
8 * *
9 * This program is free software; you can redistribute it and/or *
10 * modify it under the terms of version 2 of the GNU General *
11 * Public License as published by the Free Software Foundation. *
12 * This program is distributed in the hope that it will be useful. *
13 * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND *
14 * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, *
15 * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE *
16 * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *
17 * TO BE LEGALLY INVALID. See the GNU General Public License for *
18 * more details, a copy of which can be found in the file COPYING *
19 * included with this package. *
20 *******************************************************************/
21
22 #include <linux/blkdev.h>
23 #include <linux/pci.h>
24 #include <linux/kthread.h>
25 #include <linux/interrupt.h>
26
27 #include <scsi/scsi.h>
28 #include <scsi/scsi_device.h>
29 #include <scsi/scsi_host.h>
30 #include <scsi/scsi_transport_fc.h>
31
32 #include "lpfc_hw.h"
33 #include "lpfc_disc.h"
34 #include "lpfc_sli.h"
35 #include "lpfc_scsi.h"
36 #include "lpfc.h"
37 #include "lpfc_logmsg.h"
38 #include "lpfc_crtn.h"
39 #include "lpfc_vport.h"
40 #include "lpfc_debugfs.h"
41
42 /* AlpaArray for assignment of scsid for scan-down and bind_method */
43 static uint8_t lpfcAlpaArray[] = {
44 0xEF, 0xE8, 0xE4, 0xE2, 0xE1, 0xE0, 0xDC, 0xDA, 0xD9, 0xD6,
45 0xD5, 0xD4, 0xD3, 0xD2, 0xD1, 0xCE, 0xCD, 0xCC, 0xCB, 0xCA,
46 0xC9, 0xC7, 0xC6, 0xC5, 0xC3, 0xBC, 0xBA, 0xB9, 0xB6, 0xB5,
47 0xB4, 0xB3, 0xB2, 0xB1, 0xAE, 0xAD, 0xAC, 0xAB, 0xAA, 0xA9,
48 0xA7, 0xA6, 0xA5, 0xA3, 0x9F, 0x9E, 0x9D, 0x9B, 0x98, 0x97,
49 0x90, 0x8F, 0x88, 0x84, 0x82, 0x81, 0x80, 0x7C, 0x7A, 0x79,
50 0x76, 0x75, 0x74, 0x73, 0x72, 0x71, 0x6E, 0x6D, 0x6C, 0x6B,
51 0x6A, 0x69, 0x67, 0x66, 0x65, 0x63, 0x5C, 0x5A, 0x59, 0x56,
52 0x55, 0x54, 0x53, 0x52, 0x51, 0x4E, 0x4D, 0x4C, 0x4B, 0x4A,
53 0x49, 0x47, 0x46, 0x45, 0x43, 0x3C, 0x3A, 0x39, 0x36, 0x35,
54 0x34, 0x33, 0x32, 0x31, 0x2E, 0x2D, 0x2C, 0x2B, 0x2A, 0x29,
55 0x27, 0x26, 0x25, 0x23, 0x1F, 0x1E, 0x1D, 0x1B, 0x18, 0x17,
56 0x10, 0x0F, 0x08, 0x04, 0x02, 0x01
57 };
58
59 static void lpfc_disc_timeout_handler(struct lpfc_vport *);
60 static void lpfc_disc_flush_list(struct lpfc_vport *vport);
61
62 void
63 lpfc_terminate_rport_io(struct fc_rport *rport)
64 {
65 struct lpfc_rport_data *rdata;
66 struct lpfc_nodelist * ndlp;
67 struct lpfc_hba *phba;
68
69 rdata = rport->dd_data;
70 ndlp = rdata->pnode;
71
72 if (!ndlp || !NLP_CHK_NODE_ACT(ndlp)) {
73 if (rport->roles & FC_RPORT_ROLE_FCP_TARGET)
74 printk(KERN_ERR "Cannot find remote node"
75 " to terminate I/O Data x%x\n",
76 rport->port_id);
77 return;
78 }
79
80 phba = ndlp->vport->phba;
81
82 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_RPORT,
83 "rport terminate: sid:x%x did:x%x flg:x%x",
84 ndlp->nlp_sid, ndlp->nlp_DID, ndlp->nlp_flag);
85
86 if (ndlp->nlp_sid != NLP_NO_SID) {
87 lpfc_sli_abort_iocb(ndlp->vport,
88 &phba->sli.ring[phba->sli.fcp_ring],
89 ndlp->nlp_sid, 0, LPFC_CTX_TGT);
90 }
91
92 /*
93 * A device is normally blocked for rediscovery and unblocked when
94 * devloss timeout happens. In case a vport is removed or driver
95 * unloaded before devloss timeout happens, we need to unblock here.
96 */
97 scsi_target_unblock(&rport->dev);
98 return;
99 }
100
101 /*
102 * This function will be called when dev_loss_tmo fire.
103 */
104 void
105 lpfc_dev_loss_tmo_callbk(struct fc_rport *rport)
106 {
107 struct lpfc_rport_data *rdata;
108 struct lpfc_nodelist * ndlp;
109 struct lpfc_vport *vport;
110 struct lpfc_hba *phba;
111 struct lpfc_work_evt *evtp;
112 int put_node;
113 int put_rport;
114
115 rdata = rport->dd_data;
116 ndlp = rdata->pnode;
117 if (!ndlp || !NLP_CHK_NODE_ACT(ndlp))
118 return;
119
120 vport = ndlp->vport;
121 phba = vport->phba;
122
123 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
124 "rport devlosscb: sid:x%x did:x%x flg:x%x",
125 ndlp->nlp_sid, ndlp->nlp_DID, ndlp->nlp_flag);
126
127 /* Don't defer this if we are in the process of deleting the vport
128 * or unloading the driver. The unload will cleanup the node
129 * appropriately we just need to cleanup the ndlp rport info here.
130 */
131 if (vport->load_flag & FC_UNLOADING) {
132 put_node = rdata->pnode != NULL;
133 put_rport = ndlp->rport != NULL;
134 rdata->pnode = NULL;
135 ndlp->rport = NULL;
136 if (put_node)
137 lpfc_nlp_put(ndlp);
138 if (put_rport)
139 put_device(&rport->dev);
140 return;
141 }
142
143 if (ndlp->nlp_state == NLP_STE_MAPPED_NODE)
144 return;
145
146 evtp = &ndlp->dev_loss_evt;
147
148 if (!list_empty(&evtp->evt_listp))
149 return;
150
151 spin_lock_irq(&phba->hbalock);
152 /* We need to hold the node by incrementing the reference
153 * count until this queued work is done
154 */
155 evtp->evt_arg1 = lpfc_nlp_get(ndlp);
156 if (evtp->evt_arg1) {
157 evtp->evt = LPFC_EVT_DEV_LOSS;
158 list_add_tail(&evtp->evt_listp, &phba->work_list);
159 lpfc_worker_wake_up(phba);
160 }
161 spin_unlock_irq(&phba->hbalock);
162
163 return;
164 }
165
166 /*
167 * This function is called from the worker thread when dev_loss_tmo
168 * expire.
169 */
170 static void
171 lpfc_dev_loss_tmo_handler(struct lpfc_nodelist *ndlp)
172 {
173 struct lpfc_rport_data *rdata;
174 struct fc_rport *rport;
175 struct lpfc_vport *vport;
176 struct lpfc_hba *phba;
177 uint8_t *name;
178 int put_node;
179 int put_rport;
180 int warn_on = 0;
181
182 rport = ndlp->rport;
183
184 if (!rport)
185 return;
186
187 rdata = rport->dd_data;
188 name = (uint8_t *) &ndlp->nlp_portname;
189 vport = ndlp->vport;
190 phba = vport->phba;
191
192 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
193 "rport devlosstmo:did:x%x type:x%x id:x%x",
194 ndlp->nlp_DID, ndlp->nlp_type, rport->scsi_target_id);
195
196 /* Don't defer this if we are in the process of deleting the vport
197 * or unloading the driver. The unload will cleanup the node
198 * appropriately we just need to cleanup the ndlp rport info here.
199 */
200 if (vport->load_flag & FC_UNLOADING) {
201 if (ndlp->nlp_sid != NLP_NO_SID) {
202 /* flush the target */
203 lpfc_sli_abort_iocb(vport,
204 &phba->sli.ring[phba->sli.fcp_ring],
205 ndlp->nlp_sid, 0, LPFC_CTX_TGT);
206 }
207 put_node = rdata->pnode != NULL;
208 put_rport = ndlp->rport != NULL;
209 rdata->pnode = NULL;
210 ndlp->rport = NULL;
211 if (put_node)
212 lpfc_nlp_put(ndlp);
213 if (put_rport)
214 put_device(&rport->dev);
215 return;
216 }
217
218 if (ndlp->nlp_state == NLP_STE_MAPPED_NODE)
219 return;
220
221 if (ndlp->nlp_type & NLP_FABRIC) {
222 /* We will clean up these Nodes in linkup */
223 put_node = rdata->pnode != NULL;
224 put_rport = ndlp->rport != NULL;
225 rdata->pnode = NULL;
226 ndlp->rport = NULL;
227 if (put_node)
228 lpfc_nlp_put(ndlp);
229 if (put_rport)
230 put_device(&rport->dev);
231 return;
232 }
233
234 if (ndlp->nlp_sid != NLP_NO_SID) {
235 warn_on = 1;
236 /* flush the target */
237 lpfc_sli_abort_iocb(vport, &phba->sli.ring[phba->sli.fcp_ring],
238 ndlp->nlp_sid, 0, LPFC_CTX_TGT);
239 }
240 if (vport->load_flag & FC_UNLOADING)
241 warn_on = 0;
242
243 if (warn_on) {
244 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
245 "0203 Devloss timeout on "
246 "WWPN %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x "
247 "NPort x%06x Data: x%x x%x x%x\n",
248 *name, *(name+1), *(name+2), *(name+3),
249 *(name+4), *(name+5), *(name+6), *(name+7),
250 ndlp->nlp_DID, ndlp->nlp_flag,
251 ndlp->nlp_state, ndlp->nlp_rpi);
252 } else {
253 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
254 "0204 Devloss timeout on "
255 "WWPN %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x "
256 "NPort x%06x Data: x%x x%x x%x\n",
257 *name, *(name+1), *(name+2), *(name+3),
258 *(name+4), *(name+5), *(name+6), *(name+7),
259 ndlp->nlp_DID, ndlp->nlp_flag,
260 ndlp->nlp_state, ndlp->nlp_rpi);
261 }
262
263 put_node = rdata->pnode != NULL;
264 put_rport = ndlp->rport != NULL;
265 rdata->pnode = NULL;
266 ndlp->rport = NULL;
267 if (put_node)
268 lpfc_nlp_put(ndlp);
269 if (put_rport)
270 put_device(&rport->dev);
271
272 if (!(vport->load_flag & FC_UNLOADING) &&
273 !(ndlp->nlp_flag & NLP_DELAY_TMO) &&
274 !(ndlp->nlp_flag & NLP_NPR_2B_DISC) &&
275 (ndlp->nlp_state != NLP_STE_UNMAPPED_NODE))
276 lpfc_disc_state_machine(vport, ndlp, NULL, NLP_EVT_DEVICE_RM);
277 }
278
279 static void
280 lpfc_work_list_done(struct lpfc_hba *phba)
281 {
282 struct lpfc_work_evt *evtp = NULL;
283 struct lpfc_nodelist *ndlp;
284 int free_evt;
285
286 spin_lock_irq(&phba->hbalock);
287 while (!list_empty(&phba->work_list)) {
288 list_remove_head((&phba->work_list), evtp, typeof(*evtp),
289 evt_listp);
290 spin_unlock_irq(&phba->hbalock);
291 free_evt = 1;
292 switch (evtp->evt) {
293 case LPFC_EVT_ELS_RETRY:
294 ndlp = (struct lpfc_nodelist *) (evtp->evt_arg1);
295 lpfc_els_retry_delay_handler(ndlp);
296 free_evt = 0; /* evt is part of ndlp */
297 /* decrement the node reference count held
298 * for this queued work
299 */
300 lpfc_nlp_put(ndlp);
301 break;
302 case LPFC_EVT_DEV_LOSS:
303 ndlp = (struct lpfc_nodelist *)(evtp->evt_arg1);
304 lpfc_dev_loss_tmo_handler(ndlp);
305 free_evt = 0;
306 /* decrement the node reference count held for
307 * this queued work
308 */
309 lpfc_nlp_put(ndlp);
310 break;
311 case LPFC_EVT_ONLINE:
312 if (phba->link_state < LPFC_LINK_DOWN)
313 *(int *) (evtp->evt_arg1) = lpfc_online(phba);
314 else
315 *(int *) (evtp->evt_arg1) = 0;
316 complete((struct completion *)(evtp->evt_arg2));
317 break;
318 case LPFC_EVT_OFFLINE_PREP:
319 if (phba->link_state >= LPFC_LINK_DOWN)
320 lpfc_offline_prep(phba);
321 *(int *)(evtp->evt_arg1) = 0;
322 complete((struct completion *)(evtp->evt_arg2));
323 break;
324 case LPFC_EVT_OFFLINE:
325 lpfc_offline(phba);
326 lpfc_sli_brdrestart(phba);
327 *(int *)(evtp->evt_arg1) =
328 lpfc_sli_brdready(phba, HS_FFRDY | HS_MBRDY);
329 lpfc_unblock_mgmt_io(phba);
330 complete((struct completion *)(evtp->evt_arg2));
331 break;
332 case LPFC_EVT_WARM_START:
333 lpfc_offline(phba);
334 lpfc_reset_barrier(phba);
335 lpfc_sli_brdreset(phba);
336 lpfc_hba_down_post(phba);
337 *(int *)(evtp->evt_arg1) =
338 lpfc_sli_brdready(phba, HS_MBRDY);
339 lpfc_unblock_mgmt_io(phba);
340 complete((struct completion *)(evtp->evt_arg2));
341 break;
342 case LPFC_EVT_KILL:
343 lpfc_offline(phba);
344 *(int *)(evtp->evt_arg1)
345 = (phba->pport->stopped)
346 ? 0 : lpfc_sli_brdkill(phba);
347 lpfc_unblock_mgmt_io(phba);
348 complete((struct completion *)(evtp->evt_arg2));
349 break;
350 }
351 if (free_evt)
352 kfree(evtp);
353 spin_lock_irq(&phba->hbalock);
354 }
355 spin_unlock_irq(&phba->hbalock);
356
357 }
358
359 static void
360 lpfc_work_done(struct lpfc_hba *phba)
361 {
362 struct lpfc_sli_ring *pring;
363 uint32_t ha_copy, status, control, work_port_events;
364 struct lpfc_vport **vports;
365 struct lpfc_vport *vport;
366 int i;
367
368 spin_lock_irq(&phba->hbalock);
369 ha_copy = phba->work_ha;
370 phba->work_ha = 0;
371 spin_unlock_irq(&phba->hbalock);
372
373 if (ha_copy & HA_ERATT)
374 lpfc_handle_eratt(phba);
375
376 if (ha_copy & HA_MBATT)
377 lpfc_sli_handle_mb_event(phba);
378
379 if (ha_copy & HA_LATT)
380 lpfc_handle_latt(phba);
381 vports = lpfc_create_vport_work_array(phba);
382 if (vports != NULL)
383 for(i = 0; i <= phba->max_vpi; i++) {
384 /*
385 * We could have no vports in array if unloading, so if
386 * this happens then just use the pport
387 */
388 if (vports[i] == NULL && i == 0)
389 vport = phba->pport;
390 else
391 vport = vports[i];
392 if (vport == NULL)
393 break;
394 spin_lock_irq(&vport->work_port_lock);
395 work_port_events = vport->work_port_events;
396 vport->work_port_events &= ~work_port_events;
397 spin_unlock_irq(&vport->work_port_lock);
398 if (work_port_events & WORKER_DISC_TMO)
399 lpfc_disc_timeout_handler(vport);
400 if (work_port_events & WORKER_ELS_TMO)
401 lpfc_els_timeout_handler(vport);
402 if (work_port_events & WORKER_HB_TMO)
403 lpfc_hb_timeout_handler(phba);
404 if (work_port_events & WORKER_MBOX_TMO)
405 lpfc_mbox_timeout_handler(phba);
406 if (work_port_events & WORKER_FABRIC_BLOCK_TMO)
407 lpfc_unblock_fabric_iocbs(phba);
408 if (work_port_events & WORKER_FDMI_TMO)
409 lpfc_fdmi_timeout_handler(vport);
410 if (work_port_events & WORKER_RAMP_DOWN_QUEUE)
411 lpfc_ramp_down_queue_handler(phba);
412 if (work_port_events & WORKER_RAMP_UP_QUEUE)
413 lpfc_ramp_up_queue_handler(phba);
414 }
415 lpfc_destroy_vport_work_array(phba, vports);
416
417 pring = &phba->sli.ring[LPFC_ELS_RING];
418 status = (ha_copy & (HA_RXMASK << (4*LPFC_ELS_RING)));
419 status >>= (4*LPFC_ELS_RING);
420 if ((status & HA_RXMASK)
421 || (pring->flag & LPFC_DEFERRED_RING_EVENT)) {
422 if (pring->flag & LPFC_STOP_IOCB_EVENT) {
423 pring->flag |= LPFC_DEFERRED_RING_EVENT;
424 /* Set the lpfc data pending flag */
425 set_bit(LPFC_DATA_READY, &phba->data_flags);
426 } else {
427 pring->flag &= ~LPFC_DEFERRED_RING_EVENT;
428 lpfc_sli_handle_slow_ring_event(phba, pring,
429 (status &
430 HA_RXMASK));
431 }
432 /*
433 * Turn on Ring interrupts
434 */
435 spin_lock_irq(&phba->hbalock);
436 control = readl(phba->HCregaddr);
437 if (!(control & (HC_R0INT_ENA << LPFC_ELS_RING))) {
438 lpfc_debugfs_slow_ring_trc(phba,
439 "WRK Enable ring: cntl:x%x hacopy:x%x",
440 control, ha_copy, 0);
441
442 control |= (HC_R0INT_ENA << LPFC_ELS_RING);
443 writel(control, phba->HCregaddr);
444 readl(phba->HCregaddr); /* flush */
445 }
446 else {
447 lpfc_debugfs_slow_ring_trc(phba,
448 "WRK Ring ok: cntl:x%x hacopy:x%x",
449 control, ha_copy, 0);
450 }
451 spin_unlock_irq(&phba->hbalock);
452 }
453 lpfc_work_list_done(phba);
454 }
455
456 int
457 lpfc_do_work(void *p)
458 {
459 struct lpfc_hba *phba = p;
460 int rc;
461
462 set_user_nice(current, -20);
463 phba->data_flags = 0;
464
465 while (1) {
466 /* wait and check worker queue activities */
467 rc = wait_event_interruptible(phba->work_waitq,
468 (test_and_clear_bit(LPFC_DATA_READY,
469 &phba->data_flags)
470 || kthread_should_stop()));
471 BUG_ON(rc);
472
473 if (kthread_should_stop())
474 break;
475
476 /* Attend pending lpfc data processing */
477 lpfc_work_done(phba);
478 }
479 return 0;
480 }
481
482 /*
483 * This is only called to handle FC worker events. Since this a rare
484 * occurance, we allocate a struct lpfc_work_evt structure here instead of
485 * embedding it in the IOCB.
486 */
487 int
488 lpfc_workq_post_event(struct lpfc_hba *phba, void *arg1, void *arg2,
489 uint32_t evt)
490 {
491 struct lpfc_work_evt *evtp;
492 unsigned long flags;
493
494 /*
495 * All Mailbox completions and LPFC_ELS_RING rcv ring IOCB events will
496 * be queued to worker thread for processing
497 */
498 evtp = kmalloc(sizeof(struct lpfc_work_evt), GFP_ATOMIC);
499 if (!evtp)
500 return 0;
501
502 evtp->evt_arg1 = arg1;
503 evtp->evt_arg2 = arg2;
504 evtp->evt = evt;
505
506 spin_lock_irqsave(&phba->hbalock, flags);
507 list_add_tail(&evtp->evt_listp, &phba->work_list);
508 spin_unlock_irqrestore(&phba->hbalock, flags);
509
510 lpfc_worker_wake_up(phba);
511
512 return 1;
513 }
514
515 void
516 lpfc_cleanup_rpis(struct lpfc_vport *vport, int remove)
517 {
518 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
519 struct lpfc_hba *phba = vport->phba;
520 struct lpfc_nodelist *ndlp, *next_ndlp;
521 int rc;
522
523 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) {
524 if (!NLP_CHK_NODE_ACT(ndlp))
525 continue;
526 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
527 continue;
528 if ((phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN) ||
529 ((vport->port_type == LPFC_NPIV_PORT) &&
530 (ndlp->nlp_DID == NameServer_DID)))
531 lpfc_unreg_rpi(vport, ndlp);
532
533 /* Leave Fabric nodes alone on link down */
534 if (!remove && ndlp->nlp_type & NLP_FABRIC)
535 continue;
536 rc = lpfc_disc_state_machine(vport, ndlp, NULL,
537 remove
538 ? NLP_EVT_DEVICE_RM
539 : NLP_EVT_DEVICE_RECOVERY);
540 }
541 if (phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN) {
542 lpfc_mbx_unreg_vpi(vport);
543 spin_lock_irq(shost->host_lock);
544 vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
545 spin_unlock_irq(shost->host_lock);
546 }
547 }
548
549 void
550 lpfc_port_link_failure(struct lpfc_vport *vport)
551 {
552 /* Cleanup any outstanding RSCN activity */
553 lpfc_els_flush_rscn(vport);
554
555 /* Cleanup any outstanding ELS commands */
556 lpfc_els_flush_cmd(vport);
557
558 lpfc_cleanup_rpis(vport, 0);
559
560 /* Turn off discovery timer if its running */
561 lpfc_can_disctmo(vport);
562 }
563
564 static void
565 lpfc_linkdown_port(struct lpfc_vport *vport)
566 {
567 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
568
569 fc_host_post_event(shost, fc_get_event_number(), FCH_EVT_LINKDOWN, 0);
570
571 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
572 "Link Down: state:x%x rtry:x%x flg:x%x",
573 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
574
575 lpfc_port_link_failure(vport);
576
577 }
578
579 int
580 lpfc_linkdown(struct lpfc_hba *phba)
581 {
582 struct lpfc_vport *vport = phba->pport;
583 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
584 struct lpfc_vport **vports;
585 LPFC_MBOXQ_t *mb;
586 int i;
587
588 if (phba->link_state == LPFC_LINK_DOWN)
589 return 0;
590 spin_lock_irq(&phba->hbalock);
591 if (phba->link_state > LPFC_LINK_DOWN) {
592 phba->link_state = LPFC_LINK_DOWN;
593 phba->pport->fc_flag &= ~FC_LBIT;
594 }
595 spin_unlock_irq(&phba->hbalock);
596 vports = lpfc_create_vport_work_array(phba);
597 if (vports != NULL)
598 for(i = 0; i <= phba->max_vpi && vports[i] != NULL; i++) {
599 /* Issue a LINK DOWN event to all nodes */
600 lpfc_linkdown_port(vports[i]);
601 }
602 lpfc_destroy_vport_work_array(phba, vports);
603 /* Clean up any firmware default rpi's */
604 mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
605 if (mb) {
606 lpfc_unreg_did(phba, 0xffff, 0xffffffff, mb);
607 mb->vport = vport;
608 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
609 if (lpfc_sli_issue_mbox(phba, mb, MBX_NOWAIT)
610 == MBX_NOT_FINISHED) {
611 mempool_free(mb, phba->mbox_mem_pool);
612 }
613 }
614
615 /* Setup myDID for link up if we are in pt2pt mode */
616 if (phba->pport->fc_flag & FC_PT2PT) {
617 phba->pport->fc_myDID = 0;
618 mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
619 if (mb) {
620 lpfc_config_link(phba, mb);
621 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
622 mb->vport = vport;
623 if (lpfc_sli_issue_mbox(phba, mb, MBX_NOWAIT)
624 == MBX_NOT_FINISHED) {
625 mempool_free(mb, phba->mbox_mem_pool);
626 }
627 }
628 spin_lock_irq(shost->host_lock);
629 phba->pport->fc_flag &= ~(FC_PT2PT | FC_PT2PT_PLOGI);
630 spin_unlock_irq(shost->host_lock);
631 }
632
633 return 0;
634 }
635
636 static void
637 lpfc_linkup_cleanup_nodes(struct lpfc_vport *vport)
638 {
639 struct lpfc_nodelist *ndlp;
640
641 list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
642 if (!NLP_CHK_NODE_ACT(ndlp))
643 continue;
644 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
645 continue;
646 if (ndlp->nlp_type & NLP_FABRIC) {
647 /* On Linkup its safe to clean up the ndlp
648 * from Fabric connections.
649 */
650 if (ndlp->nlp_DID != Fabric_DID)
651 lpfc_unreg_rpi(vport, ndlp);
652 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
653 } else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) {
654 /* Fail outstanding IO now since device is
655 * marked for PLOGI.
656 */
657 lpfc_unreg_rpi(vport, ndlp);
658 }
659 }
660 }
661
662 static void
663 lpfc_linkup_port(struct lpfc_vport *vport)
664 {
665 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
666 struct lpfc_hba *phba = vport->phba;
667
668 if ((vport->load_flag & FC_UNLOADING) != 0)
669 return;
670
671 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
672 "Link Up: top:x%x speed:x%x flg:x%x",
673 phba->fc_topology, phba->fc_linkspeed, phba->link_flag);
674
675 /* If NPIV is not enabled, only bring the physical port up */
676 if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
677 (vport != phba->pport))
678 return;
679
680 fc_host_post_event(shost, fc_get_event_number(), FCH_EVT_LINKUP, 0);
681
682 spin_lock_irq(shost->host_lock);
683 vport->fc_flag &= ~(FC_PT2PT | FC_PT2PT_PLOGI | FC_ABORT_DISCOVERY |
684 FC_RSCN_MODE | FC_NLP_MORE | FC_RSCN_DISCOVERY);
685 vport->fc_flag |= FC_NDISC_ACTIVE;
686 vport->fc_ns_retry = 0;
687 spin_unlock_irq(shost->host_lock);
688
689 if (vport->fc_flag & FC_LBIT)
690 lpfc_linkup_cleanup_nodes(vport);
691
692 }
693
694 static int
695 lpfc_linkup(struct lpfc_hba *phba)
696 {
697 struct lpfc_vport **vports;
698 int i;
699
700 phba->link_state = LPFC_LINK_UP;
701
702 /* Unblock fabric iocbs if they are blocked */
703 clear_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags);
704 del_timer_sync(&phba->fabric_block_timer);
705
706 vports = lpfc_create_vport_work_array(phba);
707 if (vports != NULL)
708 for(i = 0; i <= phba->max_vpi && vports[i] != NULL; i++)
709 lpfc_linkup_port(vports[i]);
710 lpfc_destroy_vport_work_array(phba, vports);
711 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
712 lpfc_issue_clear_la(phba, phba->pport);
713
714 return 0;
715 }
716
717 /*
718 * This routine handles processing a CLEAR_LA mailbox
719 * command upon completion. It is setup in the LPFC_MBOXQ
720 * as the completion routine when the command is
721 * handed off to the SLI layer.
722 */
723 static void
724 lpfc_mbx_cmpl_clear_la(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
725 {
726 struct lpfc_vport *vport = pmb->vport;
727 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
728 struct lpfc_sli *psli = &phba->sli;
729 MAILBOX_t *mb = &pmb->mb;
730 uint32_t control;
731
732 /* Since we don't do discovery right now, turn these off here */
733 psli->ring[psli->extra_ring].flag &= ~LPFC_STOP_IOCB_EVENT;
734 psli->ring[psli->fcp_ring].flag &= ~LPFC_STOP_IOCB_EVENT;
735 psli->ring[psli->next_ring].flag &= ~LPFC_STOP_IOCB_EVENT;
736
737 /* Check for error */
738 if ((mb->mbxStatus) && (mb->mbxStatus != 0x1601)) {
739 /* CLEAR_LA mbox error <mbxStatus> state <hba_state> */
740 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
741 "0320 CLEAR_LA mbxStatus error x%x hba "
742 "state x%x\n",
743 mb->mbxStatus, vport->port_state);
744 phba->link_state = LPFC_HBA_ERROR;
745 goto out;
746 }
747
748 if (vport->port_type == LPFC_PHYSICAL_PORT)
749 phba->link_state = LPFC_HBA_READY;
750
751 spin_lock_irq(&phba->hbalock);
752 psli->sli_flag |= LPFC_PROCESS_LA;
753 control = readl(phba->HCregaddr);
754 control |= HC_LAINT_ENA;
755 writel(control, phba->HCregaddr);
756 readl(phba->HCregaddr); /* flush */
757 spin_unlock_irq(&phba->hbalock);
758 mempool_free(pmb, phba->mbox_mem_pool);
759 return;
760
761 out:
762 /* Device Discovery completes */
763 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
764 "0225 Device Discovery completes\n");
765 mempool_free(pmb, phba->mbox_mem_pool);
766
767 spin_lock_irq(shost->host_lock);
768 vport->fc_flag &= ~FC_ABORT_DISCOVERY;
769 spin_unlock_irq(shost->host_lock);
770
771 lpfc_can_disctmo(vport);
772
773 /* turn on Link Attention interrupts */
774
775 spin_lock_irq(&phba->hbalock);
776 psli->sli_flag |= LPFC_PROCESS_LA;
777 control = readl(phba->HCregaddr);
778 control |= HC_LAINT_ENA;
779 writel(control, phba->HCregaddr);
780 readl(phba->HCregaddr); /* flush */
781 spin_unlock_irq(&phba->hbalock);
782
783 return;
784 }
785
786
787 static void
788 lpfc_mbx_cmpl_local_config_link(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
789 {
790 struct lpfc_vport *vport = pmb->vport;
791
792 if (pmb->mb.mbxStatus)
793 goto out;
794
795 mempool_free(pmb, phba->mbox_mem_pool);
796
797 if (phba->fc_topology == TOPOLOGY_LOOP &&
798 vport->fc_flag & FC_PUBLIC_LOOP &&
799 !(vport->fc_flag & FC_LBIT)) {
800 /* Need to wait for FAN - use discovery timer
801 * for timeout. port_state is identically
802 * LPFC_LOCAL_CFG_LINK while waiting for FAN
803 */
804 lpfc_set_disctmo(vport);
805 return;
806 }
807
808 /* Start discovery by sending a FLOGI. port_state is identically
809 * LPFC_FLOGI while waiting for FLOGI cmpl
810 */
811 if (vport->port_state != LPFC_FLOGI) {
812 lpfc_initial_flogi(vport);
813 }
814 return;
815
816 out:
817 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
818 "0306 CONFIG_LINK mbxStatus error x%x "
819 "HBA state x%x\n",
820 pmb->mb.mbxStatus, vport->port_state);
821 mempool_free(pmb, phba->mbox_mem_pool);
822
823 lpfc_linkdown(phba);
824
825 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
826 "0200 CONFIG_LINK bad hba state x%x\n",
827 vport->port_state);
828
829 lpfc_issue_clear_la(phba, vport);
830 return;
831 }
832
833 static void
834 lpfc_mbx_cmpl_read_sparam(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
835 {
836 MAILBOX_t *mb = &pmb->mb;
837 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) pmb->context1;
838 struct lpfc_vport *vport = pmb->vport;
839
840
841 /* Check for error */
842 if (mb->mbxStatus) {
843 /* READ_SPARAM mbox error <mbxStatus> state <hba_state> */
844 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
845 "0319 READ_SPARAM mbxStatus error x%x "
846 "hba state x%x>\n",
847 mb->mbxStatus, vport->port_state);
848 lpfc_linkdown(phba);
849 goto out;
850 }
851
852 memcpy((uint8_t *) &vport->fc_sparam, (uint8_t *) mp->virt,
853 sizeof (struct serv_parm));
854 if (phba->cfg_soft_wwnn)
855 u64_to_wwn(phba->cfg_soft_wwnn,
856 vport->fc_sparam.nodeName.u.wwn);
857 if (phba->cfg_soft_wwpn)
858 u64_to_wwn(phba->cfg_soft_wwpn,
859 vport->fc_sparam.portName.u.wwn);
860 memcpy(&vport->fc_nodename, &vport->fc_sparam.nodeName,
861 sizeof(vport->fc_nodename));
862 memcpy(&vport->fc_portname, &vport->fc_sparam.portName,
863 sizeof(vport->fc_portname));
864 if (vport->port_type == LPFC_PHYSICAL_PORT) {
865 memcpy(&phba->wwnn, &vport->fc_nodename, sizeof(phba->wwnn));
866 memcpy(&phba->wwpn, &vport->fc_portname, sizeof(phba->wwnn));
867 }
868
869 lpfc_mbuf_free(phba, mp->virt, mp->phys);
870 kfree(mp);
871 mempool_free(pmb, phba->mbox_mem_pool);
872 return;
873
874 out:
875 pmb->context1 = NULL;
876 lpfc_mbuf_free(phba, mp->virt, mp->phys);
877 kfree(mp);
878 lpfc_issue_clear_la(phba, vport);
879 mempool_free(pmb, phba->mbox_mem_pool);
880 return;
881 }
882
883 static void
884 lpfc_mbx_process_link_up(struct lpfc_hba *phba, READ_LA_VAR *la)
885 {
886 struct lpfc_vport *vport = phba->pport;
887 LPFC_MBOXQ_t *sparam_mbox, *cfglink_mbox;
888 int i;
889 struct lpfc_dmabuf *mp;
890 int rc;
891
892 sparam_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
893 cfglink_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
894
895 spin_lock_irq(&phba->hbalock);
896 switch (la->UlnkSpeed) {
897 case LA_1GHZ_LINK:
898 phba->fc_linkspeed = LA_1GHZ_LINK;
899 break;
900 case LA_2GHZ_LINK:
901 phba->fc_linkspeed = LA_2GHZ_LINK;
902 break;
903 case LA_4GHZ_LINK:
904 phba->fc_linkspeed = LA_4GHZ_LINK;
905 break;
906 case LA_8GHZ_LINK:
907 phba->fc_linkspeed = LA_8GHZ_LINK;
908 break;
909 default:
910 phba->fc_linkspeed = LA_UNKNW_LINK;
911 break;
912 }
913
914 phba->fc_topology = la->topology;
915 phba->link_flag &= ~LS_NPIV_FAB_SUPPORTED;
916
917 if (phba->fc_topology == TOPOLOGY_LOOP) {
918 phba->sli3_options &= ~LPFC_SLI3_NPIV_ENABLED;
919
920 if (phba->cfg_enable_npiv)
921 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
922 "1309 Link Up Event npiv not supported in loop "
923 "topology\n");
924 /* Get Loop Map information */
925 if (la->il)
926 vport->fc_flag |= FC_LBIT;
927
928 vport->fc_myDID = la->granted_AL_PA;
929 i = la->un.lilpBde64.tus.f.bdeSize;
930
931 if (i == 0) {
932 phba->alpa_map[0] = 0;
933 } else {
934 if (vport->cfg_log_verbose & LOG_LINK_EVENT) {
935 int numalpa, j, k;
936 union {
937 uint8_t pamap[16];
938 struct {
939 uint32_t wd1;
940 uint32_t wd2;
941 uint32_t wd3;
942 uint32_t wd4;
943 } pa;
944 } un;
945 numalpa = phba->alpa_map[0];
946 j = 0;
947 while (j < numalpa) {
948 memset(un.pamap, 0, 16);
949 for (k = 1; j < numalpa; k++) {
950 un.pamap[k - 1] =
951 phba->alpa_map[j + 1];
952 j++;
953 if (k == 16)
954 break;
955 }
956 /* Link Up Event ALPA map */
957 lpfc_printf_log(phba,
958 KERN_WARNING,
959 LOG_LINK_EVENT,
960 "1304 Link Up Event "
961 "ALPA map Data: x%x "
962 "x%x x%x x%x\n",
963 un.pa.wd1, un.pa.wd2,
964 un.pa.wd3, un.pa.wd4);
965 }
966 }
967 }
968 } else {
969 if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)) {
970 if (phba->max_vpi && phba->cfg_enable_npiv &&
971 (phba->sli_rev == 3))
972 phba->sli3_options |= LPFC_SLI3_NPIV_ENABLED;
973 }
974 vport->fc_myDID = phba->fc_pref_DID;
975 vport->fc_flag |= FC_LBIT;
976 }
977 spin_unlock_irq(&phba->hbalock);
978
979 lpfc_linkup(phba);
980 if (sparam_mbox) {
981 lpfc_read_sparam(phba, sparam_mbox, 0);
982 sparam_mbox->vport = vport;
983 sparam_mbox->mbox_cmpl = lpfc_mbx_cmpl_read_sparam;
984 rc = lpfc_sli_issue_mbox(phba, sparam_mbox, MBX_NOWAIT);
985 if (rc == MBX_NOT_FINISHED) {
986 mp = (struct lpfc_dmabuf *) sparam_mbox->context1;
987 lpfc_mbuf_free(phba, mp->virt, mp->phys);
988 kfree(mp);
989 mempool_free(sparam_mbox, phba->mbox_mem_pool);
990 if (cfglink_mbox)
991 mempool_free(cfglink_mbox, phba->mbox_mem_pool);
992 goto out;
993 }
994 }
995
996 if (cfglink_mbox) {
997 vport->port_state = LPFC_LOCAL_CFG_LINK;
998 lpfc_config_link(phba, cfglink_mbox);
999 cfglink_mbox->vport = vport;
1000 cfglink_mbox->mbox_cmpl = lpfc_mbx_cmpl_local_config_link;
1001 rc = lpfc_sli_issue_mbox(phba, cfglink_mbox, MBX_NOWAIT);
1002 if (rc != MBX_NOT_FINISHED)
1003 return;
1004 mempool_free(cfglink_mbox, phba->mbox_mem_pool);
1005 }
1006 out:
1007 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
1008 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
1009 "0263 Discovery Mailbox error: state: 0x%x : %p %p\n",
1010 vport->port_state, sparam_mbox, cfglink_mbox);
1011 lpfc_issue_clear_la(phba, vport);
1012 return;
1013 }
1014
1015 static void
1016 lpfc_mbx_issue_link_down(struct lpfc_hba *phba)
1017 {
1018 uint32_t control;
1019 struct lpfc_sli *psli = &phba->sli;
1020
1021 lpfc_linkdown(phba);
1022
1023 /* turn on Link Attention interrupts - no CLEAR_LA needed */
1024 spin_lock_irq(&phba->hbalock);
1025 psli->sli_flag |= LPFC_PROCESS_LA;
1026 control = readl(phba->HCregaddr);
1027 control |= HC_LAINT_ENA;
1028 writel(control, phba->HCregaddr);
1029 readl(phba->HCregaddr); /* flush */
1030 spin_unlock_irq(&phba->hbalock);
1031 }
1032
1033 /*
1034 * This routine handles processing a READ_LA mailbox
1035 * command upon completion. It is setup in the LPFC_MBOXQ
1036 * as the completion routine when the command is
1037 * handed off to the SLI layer.
1038 */
1039 void
1040 lpfc_mbx_cmpl_read_la(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1041 {
1042 struct lpfc_vport *vport = pmb->vport;
1043 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1044 READ_LA_VAR *la;
1045 MAILBOX_t *mb = &pmb->mb;
1046 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
1047
1048 /* Unblock ELS traffic */
1049 phba->sli.ring[LPFC_ELS_RING].flag &= ~LPFC_STOP_IOCB_EVENT;
1050 /* Check for error */
1051 if (mb->mbxStatus) {
1052 lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT,
1053 "1307 READ_LA mbox error x%x state x%x\n",
1054 mb->mbxStatus, vport->port_state);
1055 lpfc_mbx_issue_link_down(phba);
1056 phba->link_state = LPFC_HBA_ERROR;
1057 goto lpfc_mbx_cmpl_read_la_free_mbuf;
1058 }
1059
1060 la = (READ_LA_VAR *) & pmb->mb.un.varReadLA;
1061
1062 memcpy(&phba->alpa_map[0], mp->virt, 128);
1063
1064 spin_lock_irq(shost->host_lock);
1065 if (la->pb)
1066 vport->fc_flag |= FC_BYPASSED_MODE;
1067 else
1068 vport->fc_flag &= ~FC_BYPASSED_MODE;
1069 spin_unlock_irq(shost->host_lock);
1070
1071 if (((phba->fc_eventTag + 1) < la->eventTag) ||
1072 (phba->fc_eventTag == la->eventTag)) {
1073 phba->fc_stat.LinkMultiEvent++;
1074 if (la->attType == AT_LINK_UP)
1075 if (phba->fc_eventTag != 0)
1076 lpfc_linkdown(phba);
1077 }
1078
1079 phba->fc_eventTag = la->eventTag;
1080
1081 if (la->attType == AT_LINK_UP) {
1082 phba->fc_stat.LinkUp++;
1083 if (phba->link_flag & LS_LOOPBACK_MODE) {
1084 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
1085 "1306 Link Up Event in loop back mode "
1086 "x%x received Data: x%x x%x x%x x%x\n",
1087 la->eventTag, phba->fc_eventTag,
1088 la->granted_AL_PA, la->UlnkSpeed,
1089 phba->alpa_map[0]);
1090 } else {
1091 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
1092 "1303 Link Up Event x%x received "
1093 "Data: x%x x%x x%x x%x\n",
1094 la->eventTag, phba->fc_eventTag,
1095 la->granted_AL_PA, la->UlnkSpeed,
1096 phba->alpa_map[0]);
1097 }
1098 lpfc_mbx_process_link_up(phba, la);
1099 } else {
1100 phba->fc_stat.LinkDown++;
1101 if (phba->link_flag & LS_LOOPBACK_MODE) {
1102 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
1103 "1308 Link Down Event in loop back mode "
1104 "x%x received "
1105 "Data: x%x x%x x%x\n",
1106 la->eventTag, phba->fc_eventTag,
1107 phba->pport->port_state, vport->fc_flag);
1108 }
1109 else {
1110 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
1111 "1305 Link Down Event x%x received "
1112 "Data: x%x x%x x%x\n",
1113 la->eventTag, phba->fc_eventTag,
1114 phba->pport->port_state, vport->fc_flag);
1115 }
1116 lpfc_mbx_issue_link_down(phba);
1117 }
1118
1119 lpfc_mbx_cmpl_read_la_free_mbuf:
1120 lpfc_mbuf_free(phba, mp->virt, mp->phys);
1121 kfree(mp);
1122 mempool_free(pmb, phba->mbox_mem_pool);
1123 return;
1124 }
1125
1126 /*
1127 * This routine handles processing a REG_LOGIN mailbox
1128 * command upon completion. It is setup in the LPFC_MBOXQ
1129 * as the completion routine when the command is
1130 * handed off to the SLI layer.
1131 */
1132 void
1133 lpfc_mbx_cmpl_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1134 {
1135 struct lpfc_vport *vport = pmb->vport;
1136 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
1137 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2;
1138
1139 pmb->context1 = NULL;
1140
1141 /* Good status, call state machine */
1142 lpfc_disc_state_machine(vport, ndlp, pmb, NLP_EVT_CMPL_REG_LOGIN);
1143 lpfc_mbuf_free(phba, mp->virt, mp->phys);
1144 kfree(mp);
1145 mempool_free(pmb, phba->mbox_mem_pool);
1146 /* decrement the node reference count held for this callback
1147 * function.
1148 */
1149 lpfc_nlp_put(ndlp);
1150
1151 return;
1152 }
1153
1154 static void
1155 lpfc_mbx_cmpl_unreg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1156 {
1157 MAILBOX_t *mb = &pmb->mb;
1158 struct lpfc_vport *vport = pmb->vport;
1159 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1160
1161 switch (mb->mbxStatus) {
1162 case 0x0011:
1163 case 0x0020:
1164 case 0x9700:
1165 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
1166 "0911 cmpl_unreg_vpi, mb status = 0x%x\n",
1167 mb->mbxStatus);
1168 break;
1169 }
1170 vport->unreg_vpi_cmpl = VPORT_OK;
1171 mempool_free(pmb, phba->mbox_mem_pool);
1172 /*
1173 * This shost reference might have been taken at the beginning of
1174 * lpfc_vport_delete()
1175 */
1176 if (vport->load_flag & FC_UNLOADING)
1177 scsi_host_put(shost);
1178 }
1179
1180 void
1181 lpfc_mbx_unreg_vpi(struct lpfc_vport *vport)
1182 {
1183 struct lpfc_hba *phba = vport->phba;
1184 LPFC_MBOXQ_t *mbox;
1185 int rc;
1186
1187 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1188 if (!mbox)
1189 return;
1190
1191 lpfc_unreg_vpi(phba, vport->vpi, mbox);
1192 mbox->vport = vport;
1193 mbox->mbox_cmpl = lpfc_mbx_cmpl_unreg_vpi;
1194 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
1195 if (rc == MBX_NOT_FINISHED) {
1196 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX | LOG_VPORT,
1197 "1800 Could not issue unreg_vpi\n");
1198 mempool_free(mbox, phba->mbox_mem_pool);
1199 vport->unreg_vpi_cmpl = VPORT_ERROR;
1200 }
1201 }
1202
1203 static void
1204 lpfc_mbx_cmpl_reg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1205 {
1206 struct lpfc_vport *vport = pmb->vport;
1207 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1208 MAILBOX_t *mb = &pmb->mb;
1209
1210 switch (mb->mbxStatus) {
1211 case 0x0011:
1212 case 0x9601:
1213 case 0x9602:
1214 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
1215 "0912 cmpl_reg_vpi, mb status = 0x%x\n",
1216 mb->mbxStatus);
1217 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
1218 spin_lock_irq(shost->host_lock);
1219 vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
1220 spin_unlock_irq(shost->host_lock);
1221 vport->fc_myDID = 0;
1222 goto out;
1223 }
1224
1225 vport->num_disc_nodes = 0;
1226 /* go thru NPR list and issue ELS PLOGIs */
1227 if (vport->fc_npr_cnt)
1228 lpfc_els_disc_plogi(vport);
1229
1230 if (!vport->num_disc_nodes) {
1231 spin_lock_irq(shost->host_lock);
1232 vport->fc_flag &= ~FC_NDISC_ACTIVE;
1233 spin_unlock_irq(shost->host_lock);
1234 lpfc_can_disctmo(vport);
1235 }
1236 vport->port_state = LPFC_VPORT_READY;
1237
1238 out:
1239 mempool_free(pmb, phba->mbox_mem_pool);
1240 return;
1241 }
1242
1243 /*
1244 * This routine handles processing a Fabric REG_LOGIN mailbox
1245 * command upon completion. It is setup in the LPFC_MBOXQ
1246 * as the completion routine when the command is
1247 * handed off to the SLI layer.
1248 */
1249 void
1250 lpfc_mbx_cmpl_fabric_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1251 {
1252 struct lpfc_vport *vport = pmb->vport;
1253 MAILBOX_t *mb = &pmb->mb;
1254 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
1255 struct lpfc_nodelist *ndlp;
1256 struct lpfc_vport **vports;
1257 int i;
1258
1259 ndlp = (struct lpfc_nodelist *) pmb->context2;
1260 pmb->context1 = NULL;
1261 pmb->context2 = NULL;
1262 if (mb->mbxStatus) {
1263 lpfc_mbuf_free(phba, mp->virt, mp->phys);
1264 kfree(mp);
1265 mempool_free(pmb, phba->mbox_mem_pool);
1266
1267 if (phba->fc_topology == TOPOLOGY_LOOP) {
1268 /* FLOGI failed, use loop map to make discovery list */
1269 lpfc_disc_list_loopmap(vport);
1270
1271 /* Start discovery */
1272 lpfc_disc_start(vport);
1273 /* Decrement the reference count to ndlp after the
1274 * reference to the ndlp are done.
1275 */
1276 lpfc_nlp_put(ndlp);
1277 return;
1278 }
1279
1280 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
1281 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
1282 "0258 Register Fabric login error: 0x%x\n",
1283 mb->mbxStatus);
1284 /* Decrement the reference count to ndlp after the reference
1285 * to the ndlp are done.
1286 */
1287 lpfc_nlp_put(ndlp);
1288 return;
1289 }
1290
1291 ndlp->nlp_rpi = mb->un.varWords[0];
1292 ndlp->nlp_type |= NLP_FABRIC;
1293 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1294
1295 if (vport->port_state == LPFC_FABRIC_CFG_LINK) {
1296 vports = lpfc_create_vport_work_array(phba);
1297 if (vports != NULL)
1298 for(i = 0;
1299 i <= phba->max_vpi && vports[i] != NULL;
1300 i++) {
1301 if (vports[i]->port_type == LPFC_PHYSICAL_PORT)
1302 continue;
1303 if (phba->fc_topology == TOPOLOGY_LOOP) {
1304 lpfc_vport_set_state(vports[i],
1305 FC_VPORT_LINKDOWN);
1306 continue;
1307 }
1308 if (phba->link_flag & LS_NPIV_FAB_SUPPORTED)
1309 lpfc_initial_fdisc(vports[i]);
1310 else {
1311 lpfc_vport_set_state(vports[i],
1312 FC_VPORT_NO_FABRIC_SUPP);
1313 lpfc_printf_vlog(vport, KERN_ERR,
1314 LOG_ELS,
1315 "0259 No NPIV "
1316 "Fabric support\n");
1317 }
1318 }
1319 lpfc_destroy_vport_work_array(phba, vports);
1320 lpfc_do_scr_ns_plogi(phba, vport);
1321 }
1322
1323 lpfc_mbuf_free(phba, mp->virt, mp->phys);
1324 kfree(mp);
1325 mempool_free(pmb, phba->mbox_mem_pool);
1326
1327 /* Drop the reference count from the mbox at the end after
1328 * all the current reference to the ndlp have been done.
1329 */
1330 lpfc_nlp_put(ndlp);
1331 return;
1332 }
1333
1334 /*
1335 * This routine handles processing a NameServer REG_LOGIN mailbox
1336 * command upon completion. It is setup in the LPFC_MBOXQ
1337 * as the completion routine when the command is
1338 * handed off to the SLI layer.
1339 */
1340 void
1341 lpfc_mbx_cmpl_ns_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1342 {
1343 MAILBOX_t *mb = &pmb->mb;
1344 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
1345 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2;
1346 struct lpfc_vport *vport = pmb->vport;
1347
1348 if (mb->mbxStatus) {
1349 out:
1350 /* decrement the node reference count held for this
1351 * callback function.
1352 */
1353 lpfc_nlp_put(ndlp);
1354 lpfc_mbuf_free(phba, mp->virt, mp->phys);
1355 kfree(mp);
1356 mempool_free(pmb, phba->mbox_mem_pool);
1357
1358 /* If no other thread is using the ndlp, free it */
1359 lpfc_nlp_not_used(ndlp);
1360
1361 if (phba->fc_topology == TOPOLOGY_LOOP) {
1362 /*
1363 * RegLogin failed, use loop map to make discovery
1364 * list
1365 */
1366 lpfc_disc_list_loopmap(vport);
1367
1368 /* Start discovery */
1369 lpfc_disc_start(vport);
1370 return;
1371 }
1372 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
1373 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1374 "0260 Register NameServer error: 0x%x\n",
1375 mb->mbxStatus);
1376 return;
1377 }
1378
1379 pmb->context1 = NULL;
1380
1381 ndlp->nlp_rpi = mb->un.varWords[0];
1382 ndlp->nlp_type |= NLP_FABRIC;
1383 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1384
1385 if (vport->port_state < LPFC_VPORT_READY) {
1386 /* Link up discovery requires Fabric registration. */
1387 lpfc_ns_cmd(vport, SLI_CTNS_RFF_ID, 0, 0); /* Do this first! */
1388 lpfc_ns_cmd(vport, SLI_CTNS_RNN_ID, 0, 0);
1389 lpfc_ns_cmd(vport, SLI_CTNS_RSNN_NN, 0, 0);
1390 lpfc_ns_cmd(vport, SLI_CTNS_RSPN_ID, 0, 0);
1391 lpfc_ns_cmd(vport, SLI_CTNS_RFT_ID, 0, 0);
1392
1393 /* Issue SCR just before NameServer GID_FT Query */
1394 lpfc_issue_els_scr(vport, SCR_DID, 0);
1395 }
1396
1397 vport->fc_ns_retry = 0;
1398 /* Good status, issue CT Request to NameServer */
1399 if (lpfc_ns_cmd(vport, SLI_CTNS_GID_FT, 0, 0)) {
1400 /* Cannot issue NameServer Query, so finish up discovery */
1401 goto out;
1402 }
1403
1404 /* decrement the node reference count held for this
1405 * callback function.
1406 */
1407 lpfc_nlp_put(ndlp);
1408 lpfc_mbuf_free(phba, mp->virt, mp->phys);
1409 kfree(mp);
1410 mempool_free(pmb, phba->mbox_mem_pool);
1411
1412 return;
1413 }
1414
1415 static void
1416 lpfc_register_remote_port(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
1417 {
1418 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1419 struct fc_rport *rport;
1420 struct lpfc_rport_data *rdata;
1421 struct fc_rport_identifiers rport_ids;
1422 struct lpfc_hba *phba = vport->phba;
1423
1424 /* Remote port has reappeared. Re-register w/ FC transport */
1425 rport_ids.node_name = wwn_to_u64(ndlp->nlp_nodename.u.wwn);
1426 rport_ids.port_name = wwn_to_u64(ndlp->nlp_portname.u.wwn);
1427 rport_ids.port_id = ndlp->nlp_DID;
1428 rport_ids.roles = FC_RPORT_ROLE_UNKNOWN;
1429
1430 /*
1431 * We leave our node pointer in rport->dd_data when we unregister a
1432 * FCP target port. But fc_remote_port_add zeros the space to which
1433 * rport->dd_data points. So, if we're reusing a previously
1434 * registered port, drop the reference that we took the last time we
1435 * registered the port.
1436 */
1437 if (ndlp->rport && ndlp->rport->dd_data &&
1438 ((struct lpfc_rport_data *) ndlp->rport->dd_data)->pnode == ndlp)
1439 lpfc_nlp_put(ndlp);
1440
1441 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
1442 "rport add: did:x%x flg:x%x type x%x",
1443 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
1444
1445 ndlp->rport = rport = fc_remote_port_add(shost, 0, &rport_ids);
1446 if (!rport || !get_device(&rport->dev)) {
1447 dev_printk(KERN_WARNING, &phba->pcidev->dev,
1448 "Warning: fc_remote_port_add failed\n");
1449 return;
1450 }
1451
1452 /* initialize static port data */
1453 rport->maxframe_size = ndlp->nlp_maxframe;
1454 rport->supported_classes = ndlp->nlp_class_sup;
1455 rdata = rport->dd_data;
1456 rdata->pnode = lpfc_nlp_get(ndlp);
1457
1458 if (ndlp->nlp_type & NLP_FCP_TARGET)
1459 rport_ids.roles |= FC_RPORT_ROLE_FCP_TARGET;
1460 if (ndlp->nlp_type & NLP_FCP_INITIATOR)
1461 rport_ids.roles |= FC_RPORT_ROLE_FCP_INITIATOR;
1462
1463
1464 if (rport_ids.roles != FC_RPORT_ROLE_UNKNOWN)
1465 fc_remote_port_rolechg(rport, rport_ids.roles);
1466
1467 if ((rport->scsi_target_id != -1) &&
1468 (rport->scsi_target_id < LPFC_MAX_TARGET)) {
1469 ndlp->nlp_sid = rport->scsi_target_id;
1470 }
1471 return;
1472 }
1473
1474 static void
1475 lpfc_unregister_remote_port(struct lpfc_nodelist *ndlp)
1476 {
1477 struct fc_rport *rport = ndlp->rport;
1478
1479 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_RPORT,
1480 "rport delete: did:x%x flg:x%x type x%x",
1481 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
1482
1483 fc_remote_port_delete(rport);
1484
1485 return;
1486 }
1487
1488 static void
1489 lpfc_nlp_counters(struct lpfc_vport *vport, int state, int count)
1490 {
1491 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1492
1493 spin_lock_irq(shost->host_lock);
1494 switch (state) {
1495 case NLP_STE_UNUSED_NODE:
1496 vport->fc_unused_cnt += count;
1497 break;
1498 case NLP_STE_PLOGI_ISSUE:
1499 vport->fc_plogi_cnt += count;
1500 break;
1501 case NLP_STE_ADISC_ISSUE:
1502 vport->fc_adisc_cnt += count;
1503 break;
1504 case NLP_STE_REG_LOGIN_ISSUE:
1505 vport->fc_reglogin_cnt += count;
1506 break;
1507 case NLP_STE_PRLI_ISSUE:
1508 vport->fc_prli_cnt += count;
1509 break;
1510 case NLP_STE_UNMAPPED_NODE:
1511 vport->fc_unmap_cnt += count;
1512 break;
1513 case NLP_STE_MAPPED_NODE:
1514 vport->fc_map_cnt += count;
1515 break;
1516 case NLP_STE_NPR_NODE:
1517 vport->fc_npr_cnt += count;
1518 break;
1519 }
1520 spin_unlock_irq(shost->host_lock);
1521 }
1522
1523 static void
1524 lpfc_nlp_state_cleanup(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1525 int old_state, int new_state)
1526 {
1527 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1528
1529 if (new_state == NLP_STE_UNMAPPED_NODE) {
1530 ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
1531 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE;
1532 ndlp->nlp_type |= NLP_FC_NODE;
1533 }
1534 if (new_state == NLP_STE_MAPPED_NODE)
1535 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE;
1536 if (new_state == NLP_STE_NPR_NODE)
1537 ndlp->nlp_flag &= ~NLP_RCV_PLOGI;
1538
1539 /* Transport interface */
1540 if (ndlp->rport && (old_state == NLP_STE_MAPPED_NODE ||
1541 old_state == NLP_STE_UNMAPPED_NODE)) {
1542 vport->phba->nport_event_cnt++;
1543 lpfc_unregister_remote_port(ndlp);
1544 }
1545
1546 if (new_state == NLP_STE_MAPPED_NODE ||
1547 new_state == NLP_STE_UNMAPPED_NODE) {
1548 vport->phba->nport_event_cnt++;
1549 /*
1550 * Tell the fc transport about the port, if we haven't
1551 * already. If we have, and it's a scsi entity, be
1552 * sure to unblock any attached scsi devices
1553 */
1554 lpfc_register_remote_port(vport, ndlp);
1555 }
1556 /*
1557 * if we added to Mapped list, but the remote port
1558 * registration failed or assigned a target id outside
1559 * our presentable range - move the node to the
1560 * Unmapped List
1561 */
1562 if (new_state == NLP_STE_MAPPED_NODE &&
1563 (!ndlp->rport ||
1564 ndlp->rport->scsi_target_id == -1 ||
1565 ndlp->rport->scsi_target_id >= LPFC_MAX_TARGET)) {
1566 spin_lock_irq(shost->host_lock);
1567 ndlp->nlp_flag |= NLP_TGT_NO_SCSIID;
1568 spin_unlock_irq(shost->host_lock);
1569 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1570 }
1571 }
1572
1573 static char *
1574 lpfc_nlp_state_name(char *buffer, size_t size, int state)
1575 {
1576 static char *states[] = {
1577 [NLP_STE_UNUSED_NODE] = "UNUSED",
1578 [NLP_STE_PLOGI_ISSUE] = "PLOGI",
1579 [NLP_STE_ADISC_ISSUE] = "ADISC",
1580 [NLP_STE_REG_LOGIN_ISSUE] = "REGLOGIN",
1581 [NLP_STE_PRLI_ISSUE] = "PRLI",
1582 [NLP_STE_UNMAPPED_NODE] = "UNMAPPED",
1583 [NLP_STE_MAPPED_NODE] = "MAPPED",
1584 [NLP_STE_NPR_NODE] = "NPR",
1585 };
1586
1587 if (state < NLP_STE_MAX_STATE && states[state])
1588 strlcpy(buffer, states[state], size);
1589 else
1590 snprintf(buffer, size, "unknown (%d)", state);
1591 return buffer;
1592 }
1593
1594 void
1595 lpfc_nlp_set_state(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1596 int state)
1597 {
1598 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1599 int old_state = ndlp->nlp_state;
1600 char name1[16], name2[16];
1601
1602 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
1603 "0904 NPort state transition x%06x, %s -> %s\n",
1604 ndlp->nlp_DID,
1605 lpfc_nlp_state_name(name1, sizeof(name1), old_state),
1606 lpfc_nlp_state_name(name2, sizeof(name2), state));
1607
1608 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
1609 "node statechg did:x%x old:%d ste:%d",
1610 ndlp->nlp_DID, old_state, state);
1611
1612 if (old_state == NLP_STE_NPR_NODE &&
1613 state != NLP_STE_NPR_NODE)
1614 lpfc_cancel_retry_delay_tmo(vport, ndlp);
1615 if (old_state == NLP_STE_UNMAPPED_NODE) {
1616 ndlp->nlp_flag &= ~NLP_TGT_NO_SCSIID;
1617 ndlp->nlp_type &= ~NLP_FC_NODE;
1618 }
1619
1620 if (list_empty(&ndlp->nlp_listp)) {
1621 spin_lock_irq(shost->host_lock);
1622 list_add_tail(&ndlp->nlp_listp, &vport->fc_nodes);
1623 spin_unlock_irq(shost->host_lock);
1624 } else if (old_state)
1625 lpfc_nlp_counters(vport, old_state, -1);
1626
1627 ndlp->nlp_state = state;
1628 lpfc_nlp_counters(vport, state, 1);
1629 lpfc_nlp_state_cleanup(vport, ndlp, old_state, state);
1630 }
1631
1632 void
1633 lpfc_enqueue_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
1634 {
1635 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1636
1637 if (list_empty(&ndlp->nlp_listp)) {
1638 spin_lock_irq(shost->host_lock);
1639 list_add_tail(&ndlp->nlp_listp, &vport->fc_nodes);
1640 spin_unlock_irq(shost->host_lock);
1641 }
1642 }
1643
1644 void
1645 lpfc_dequeue_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
1646 {
1647 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1648
1649 lpfc_cancel_retry_delay_tmo(vport, ndlp);
1650 if (ndlp->nlp_state && !list_empty(&ndlp->nlp_listp))
1651 lpfc_nlp_counters(vport, ndlp->nlp_state, -1);
1652 spin_lock_irq(shost->host_lock);
1653 list_del_init(&ndlp->nlp_listp);
1654 spin_unlock_irq(shost->host_lock);
1655 lpfc_nlp_state_cleanup(vport, ndlp, ndlp->nlp_state,
1656 NLP_STE_UNUSED_NODE);
1657 }
1658
1659 static void
1660 lpfc_disable_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
1661 {
1662 lpfc_cancel_retry_delay_tmo(vport, ndlp);
1663 if (ndlp->nlp_state && !list_empty(&ndlp->nlp_listp))
1664 lpfc_nlp_counters(vport, ndlp->nlp_state, -1);
1665 lpfc_nlp_state_cleanup(vport, ndlp, ndlp->nlp_state,
1666 NLP_STE_UNUSED_NODE);
1667 }
1668
1669 struct lpfc_nodelist *
1670 lpfc_enable_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1671 int state)
1672 {
1673 struct lpfc_hba *phba = vport->phba;
1674 uint32_t did;
1675 unsigned long flags;
1676
1677 if (!ndlp)
1678 return NULL;
1679
1680 spin_lock_irqsave(&phba->ndlp_lock, flags);
1681 /* The ndlp should not be in memory free mode */
1682 if (NLP_CHK_FREE_REQ(ndlp)) {
1683 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
1684 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE,
1685 "0277 lpfc_enable_node: ndlp:x%p "
1686 "usgmap:x%x refcnt:%d\n",
1687 (void *)ndlp, ndlp->nlp_usg_map,
1688 atomic_read(&ndlp->kref.refcount));
1689 return NULL;
1690 }
1691 /* The ndlp should not already be in active mode */
1692 if (NLP_CHK_NODE_ACT(ndlp)) {
1693 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
1694 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE,
1695 "0278 lpfc_enable_node: ndlp:x%p "
1696 "usgmap:x%x refcnt:%d\n",
1697 (void *)ndlp, ndlp->nlp_usg_map,
1698 atomic_read(&ndlp->kref.refcount));
1699 return NULL;
1700 }
1701
1702 /* Keep the original DID */
1703 did = ndlp->nlp_DID;
1704
1705 /* re-initialize ndlp except of ndlp linked list pointer */
1706 memset((((char *)ndlp) + sizeof (struct list_head)), 0,
1707 sizeof (struct lpfc_nodelist) - sizeof (struct list_head));
1708 INIT_LIST_HEAD(&ndlp->els_retry_evt.evt_listp);
1709 INIT_LIST_HEAD(&ndlp->dev_loss_evt.evt_listp);
1710 init_timer(&ndlp->nlp_delayfunc);
1711 ndlp->nlp_delayfunc.function = lpfc_els_retry_delay;
1712 ndlp->nlp_delayfunc.data = (unsigned long)ndlp;
1713 ndlp->nlp_DID = did;
1714 ndlp->vport = vport;
1715 ndlp->nlp_sid = NLP_NO_SID;
1716 /* ndlp management re-initialize */
1717 kref_init(&ndlp->kref);
1718 NLP_INT_NODE_ACT(ndlp);
1719
1720 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
1721
1722 if (state != NLP_STE_UNUSED_NODE)
1723 lpfc_nlp_set_state(vport, ndlp, state);
1724
1725 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
1726 "node enable: did:x%x",
1727 ndlp->nlp_DID, 0, 0);
1728 return ndlp;
1729 }
1730
1731 void
1732 lpfc_drop_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
1733 {
1734 /*
1735 * Use of lpfc_drop_node and UNUSED list: lpfc_drop_node should
1736 * be used if we wish to issue the "last" lpfc_nlp_put() to remove
1737 * the ndlp from the vport. The ndlp marked as UNUSED on the list
1738 * until ALL other outstanding threads have completed. We check
1739 * that the ndlp not already in the UNUSED state before we proceed.
1740 */
1741 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
1742 return;
1743 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNUSED_NODE);
1744 lpfc_nlp_put(ndlp);
1745 return;
1746 }
1747
1748 /*
1749 * Start / ReStart rescue timer for Discovery / RSCN handling
1750 */
1751 void
1752 lpfc_set_disctmo(struct lpfc_vport *vport)
1753 {
1754 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1755 struct lpfc_hba *phba = vport->phba;
1756 uint32_t tmo;
1757
1758 if (vport->port_state == LPFC_LOCAL_CFG_LINK) {
1759 /* For FAN, timeout should be greater then edtov */
1760 tmo = (((phba->fc_edtov + 999) / 1000) + 1);
1761 } else {
1762 /* Normal discovery timeout should be > then ELS/CT timeout
1763 * FC spec states we need 3 * ratov for CT requests
1764 */
1765 tmo = ((phba->fc_ratov * 3) + 3);
1766 }
1767
1768
1769 if (!timer_pending(&vport->fc_disctmo)) {
1770 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
1771 "set disc timer: tmo:x%x state:x%x flg:x%x",
1772 tmo, vport->port_state, vport->fc_flag);
1773 }
1774
1775 mod_timer(&vport->fc_disctmo, jiffies + HZ * tmo);
1776 spin_lock_irq(shost->host_lock);
1777 vport->fc_flag |= FC_DISC_TMO;
1778 spin_unlock_irq(shost->host_lock);
1779
1780 /* Start Discovery Timer state <hba_state> */
1781 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
1782 "0247 Start Discovery Timer state x%x "
1783 "Data: x%x x%lx x%x x%x\n",
1784 vport->port_state, tmo,
1785 (unsigned long)&vport->fc_disctmo, vport->fc_plogi_cnt,
1786 vport->fc_adisc_cnt);
1787
1788 return;
1789 }
1790
1791 /*
1792 * Cancel rescue timer for Discovery / RSCN handling
1793 */
1794 int
1795 lpfc_can_disctmo(struct lpfc_vport *vport)
1796 {
1797 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1798 unsigned long iflags;
1799
1800 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
1801 "can disc timer: state:x%x rtry:x%x flg:x%x",
1802 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
1803
1804 /* Turn off discovery timer if its running */
1805 if (vport->fc_flag & FC_DISC_TMO) {
1806 spin_lock_irqsave(shost->host_lock, iflags);
1807 vport->fc_flag &= ~FC_DISC_TMO;
1808 spin_unlock_irqrestore(shost->host_lock, iflags);
1809 del_timer_sync(&vport->fc_disctmo);
1810 spin_lock_irqsave(&vport->work_port_lock, iflags);
1811 vport->work_port_events &= ~WORKER_DISC_TMO;
1812 spin_unlock_irqrestore(&vport->work_port_lock, iflags);
1813 }
1814
1815 /* Cancel Discovery Timer state <hba_state> */
1816 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
1817 "0248 Cancel Discovery Timer state x%x "
1818 "Data: x%x x%x x%x\n",
1819 vport->port_state, vport->fc_flag,
1820 vport->fc_plogi_cnt, vport->fc_adisc_cnt);
1821 return 0;
1822 }
1823
1824 /*
1825 * Check specified ring for outstanding IOCB on the SLI queue
1826 * Return true if iocb matches the specified nport
1827 */
1828 int
1829 lpfc_check_sli_ndlp(struct lpfc_hba *phba,
1830 struct lpfc_sli_ring *pring,
1831 struct lpfc_iocbq *iocb,
1832 struct lpfc_nodelist *ndlp)
1833 {
1834 struct lpfc_sli *psli = &phba->sli;
1835 IOCB_t *icmd = &iocb->iocb;
1836 struct lpfc_vport *vport = ndlp->vport;
1837
1838 if (iocb->vport != vport)
1839 return 0;
1840
1841 if (pring->ringno == LPFC_ELS_RING) {
1842 switch (icmd->ulpCommand) {
1843 case CMD_GEN_REQUEST64_CR:
1844 if (icmd->ulpContext == (volatile ushort)ndlp->nlp_rpi)
1845 return 1;
1846 case CMD_ELS_REQUEST64_CR:
1847 if (icmd->un.elsreq64.remoteID == ndlp->nlp_DID)
1848 return 1;
1849 case CMD_XMIT_ELS_RSP64_CX:
1850 if (iocb->context1 == (uint8_t *) ndlp)
1851 return 1;
1852 }
1853 } else if (pring->ringno == psli->extra_ring) {
1854
1855 } else if (pring->ringno == psli->fcp_ring) {
1856 /* Skip match check if waiting to relogin to FCP target */
1857 if ((ndlp->nlp_type & NLP_FCP_TARGET) &&
1858 (ndlp->nlp_flag & NLP_DELAY_TMO)) {
1859 return 0;
1860 }
1861 if (icmd->ulpContext == (volatile ushort)ndlp->nlp_rpi) {
1862 return 1;
1863 }
1864 } else if (pring->ringno == psli->next_ring) {
1865
1866 }
1867 return 0;
1868 }
1869
1870 /*
1871 * Free resources / clean up outstanding I/Os
1872 * associated with nlp_rpi in the LPFC_NODELIST entry.
1873 */
1874 static int
1875 lpfc_no_rpi(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
1876 {
1877 LIST_HEAD(completions);
1878 struct lpfc_sli *psli;
1879 struct lpfc_sli_ring *pring;
1880 struct lpfc_iocbq *iocb, *next_iocb;
1881 IOCB_t *icmd;
1882 uint32_t rpi, i;
1883
1884 lpfc_fabric_abort_nport(ndlp);
1885
1886 /*
1887 * Everything that matches on txcmplq will be returned
1888 * by firmware with a no rpi error.
1889 */
1890 psli = &phba->sli;
1891 rpi = ndlp->nlp_rpi;
1892 if (rpi) {
1893 /* Now process each ring */
1894 for (i = 0; i < psli->num_rings; i++) {
1895 pring = &psli->ring[i];
1896
1897 spin_lock_irq(&phba->hbalock);
1898 list_for_each_entry_safe(iocb, next_iocb, &pring->txq,
1899 list) {
1900 /*
1901 * Check to see if iocb matches the nport we are
1902 * looking for
1903 */
1904 if ((lpfc_check_sli_ndlp(phba, pring, iocb,
1905 ndlp))) {
1906 /* It matches, so deque and call compl
1907 with an error */
1908 list_move_tail(&iocb->list,
1909 &completions);
1910 pring->txq_cnt--;
1911 }
1912 }
1913 spin_unlock_irq(&phba->hbalock);
1914 }
1915 }
1916
1917 while (!list_empty(&completions)) {
1918 iocb = list_get_first(&completions, struct lpfc_iocbq, list);
1919 list_del_init(&iocb->list);
1920
1921 if (!iocb->iocb_cmpl)
1922 lpfc_sli_release_iocbq(phba, iocb);
1923 else {
1924 icmd = &iocb->iocb;
1925 icmd->ulpStatus = IOSTAT_LOCAL_REJECT;
1926 icmd->un.ulpWord[4] = IOERR_SLI_ABORTED;
1927 (iocb->iocb_cmpl)(phba, iocb, iocb);
1928 }
1929 }
1930
1931 return 0;
1932 }
1933
1934 /*
1935 * Free rpi associated with LPFC_NODELIST entry.
1936 * This routine is called from lpfc_freenode(), when we are removing
1937 * a LPFC_NODELIST entry. It is also called if the driver initiates a
1938 * LOGO that completes successfully, and we are waiting to PLOGI back
1939 * to the remote NPort. In addition, it is called after we receive
1940 * and unsolicated ELS cmd, send back a rsp, the rsp completes and
1941 * we are waiting to PLOGI back to the remote NPort.
1942 */
1943 int
1944 lpfc_unreg_rpi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
1945 {
1946 struct lpfc_hba *phba = vport->phba;
1947 LPFC_MBOXQ_t *mbox;
1948 int rc;
1949
1950 if (ndlp->nlp_rpi) {
1951 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1952 if (mbox) {
1953 lpfc_unreg_login(phba, vport->vpi, ndlp->nlp_rpi, mbox);
1954 mbox->vport = vport;
1955 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1956 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
1957 if (rc == MBX_NOT_FINISHED)
1958 mempool_free(mbox, phba->mbox_mem_pool);
1959 }
1960 lpfc_no_rpi(phba, ndlp);
1961 ndlp->nlp_rpi = 0;
1962 return 1;
1963 }
1964 return 0;
1965 }
1966
1967 void
1968 lpfc_unreg_all_rpis(struct lpfc_vport *vport)
1969 {
1970 struct lpfc_hba *phba = vport->phba;
1971 LPFC_MBOXQ_t *mbox;
1972 int rc;
1973
1974 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1975 if (mbox) {
1976 lpfc_unreg_login(phba, vport->vpi, 0xffff, mbox);
1977 mbox->vport = vport;
1978 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1979 mbox->context1 = NULL;
1980 rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO);
1981 if (rc == MBX_NOT_FINISHED) {
1982 mempool_free(mbox, phba->mbox_mem_pool);
1983 }
1984 }
1985 }
1986
1987 void
1988 lpfc_unreg_default_rpis(struct lpfc_vport *vport)
1989 {
1990 struct lpfc_hba *phba = vport->phba;
1991 LPFC_MBOXQ_t *mbox;
1992 int rc;
1993
1994 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1995 if (mbox) {
1996 lpfc_unreg_did(phba, vport->vpi, 0xffffffff, mbox);
1997 mbox->vport = vport;
1998 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1999 mbox->context1 = NULL;
2000 rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO);
2001 if (rc == MBX_NOT_FINISHED) {
2002 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX | LOG_VPORT,
2003 "1815 Could not issue "
2004 "unreg_did (default rpis)\n");
2005 mempool_free(mbox, phba->mbox_mem_pool);
2006 }
2007 }
2008 }
2009
2010 /*
2011 * Free resources associated with LPFC_NODELIST entry
2012 * so it can be freed.
2013 */
2014 static int
2015 lpfc_cleanup_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
2016 {
2017 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2018 struct lpfc_hba *phba = vport->phba;
2019 LPFC_MBOXQ_t *mb, *nextmb;
2020 struct lpfc_dmabuf *mp;
2021
2022 /* Cleanup node for NPort <nlp_DID> */
2023 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
2024 "0900 Cleanup node for NPort x%x "
2025 "Data: x%x x%x x%x\n",
2026 ndlp->nlp_DID, ndlp->nlp_flag,
2027 ndlp->nlp_state, ndlp->nlp_rpi);
2028 if (NLP_CHK_FREE_REQ(ndlp)) {
2029 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE,
2030 "0280 lpfc_cleanup_node: ndlp:x%p "
2031 "usgmap:x%x refcnt:%d\n",
2032 (void *)ndlp, ndlp->nlp_usg_map,
2033 atomic_read(&ndlp->kref.refcount));
2034 lpfc_dequeue_node(vport, ndlp);
2035 } else {
2036 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE,
2037 "0281 lpfc_cleanup_node: ndlp:x%p "
2038 "usgmap:x%x refcnt:%d\n",
2039 (void *)ndlp, ndlp->nlp_usg_map,
2040 atomic_read(&ndlp->kref.refcount));
2041 lpfc_disable_node(vport, ndlp);
2042 }
2043
2044 /* cleanup any ndlp on mbox q waiting for reglogin cmpl */
2045 if ((mb = phba->sli.mbox_active)) {
2046 if ((mb->mb.mbxCommand == MBX_REG_LOGIN64) &&
2047 (ndlp == (struct lpfc_nodelist *) mb->context2)) {
2048 mb->context2 = NULL;
2049 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
2050 }
2051 }
2052
2053 spin_lock_irq(&phba->hbalock);
2054 list_for_each_entry_safe(mb, nextmb, &phba->sli.mboxq, list) {
2055 if ((mb->mb.mbxCommand == MBX_REG_LOGIN64) &&
2056 (ndlp == (struct lpfc_nodelist *) mb->context2)) {
2057 mp = (struct lpfc_dmabuf *) (mb->context1);
2058 if (mp) {
2059 __lpfc_mbuf_free(phba, mp->virt, mp->phys);
2060 kfree(mp);
2061 }
2062 list_del(&mb->list);
2063 mempool_free(mb, phba->mbox_mem_pool);
2064 /* We shall not invoke the lpfc_nlp_put to decrement
2065 * the ndlp reference count as we are in the process
2066 * of lpfc_nlp_release.
2067 */
2068 }
2069 }
2070 spin_unlock_irq(&phba->hbalock);
2071
2072 lpfc_els_abort(phba, ndlp);
2073
2074 spin_lock_irq(shost->host_lock);
2075 ndlp->nlp_flag &= ~NLP_DELAY_TMO;
2076 spin_unlock_irq(shost->host_lock);
2077
2078 ndlp->nlp_last_elscmd = 0;
2079 del_timer_sync(&ndlp->nlp_delayfunc);
2080
2081 list_del_init(&ndlp->els_retry_evt.evt_listp);
2082 list_del_init(&ndlp->dev_loss_evt.evt_listp);
2083
2084 lpfc_unreg_rpi(vport, ndlp);
2085
2086 return 0;
2087 }
2088
2089 /*
2090 * Check to see if we can free the nlp back to the freelist.
2091 * If we are in the middle of using the nlp in the discovery state
2092 * machine, defer the free till we reach the end of the state machine.
2093 */
2094 static void
2095 lpfc_nlp_remove(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
2096 {
2097 struct lpfc_hba *phba = vport->phba;
2098 struct lpfc_rport_data *rdata;
2099 LPFC_MBOXQ_t *mbox;
2100 int rc;
2101
2102 lpfc_cancel_retry_delay_tmo(vport, ndlp);
2103 if (ndlp->nlp_flag & NLP_DEFER_RM && !ndlp->nlp_rpi) {
2104 /* For this case we need to cleanup the default rpi
2105 * allocated by the firmware.
2106 */
2107 if ((mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL))
2108 != NULL) {
2109 rc = lpfc_reg_login(phba, vport->vpi, ndlp->nlp_DID,
2110 (uint8_t *) &vport->fc_sparam, mbox, 0);
2111 if (rc) {
2112 mempool_free(mbox, phba->mbox_mem_pool);
2113 }
2114 else {
2115 mbox->mbox_flag |= LPFC_MBX_IMED_UNREG;
2116 mbox->mbox_cmpl = lpfc_mbx_cmpl_dflt_rpi;
2117 mbox->vport = vport;
2118 mbox->context2 = NULL;
2119 rc =lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
2120 if (rc == MBX_NOT_FINISHED) {
2121 mempool_free(mbox, phba->mbox_mem_pool);
2122 }
2123 }
2124 }
2125 }
2126 lpfc_cleanup_node(vport, ndlp);
2127
2128 /*
2129 * We can get here with a non-NULL ndlp->rport because when we
2130 * unregister a rport we don't break the rport/node linkage. So if we
2131 * do, make sure we don't leaving any dangling pointers behind.
2132 */
2133 if (ndlp->rport) {
2134 rdata = ndlp->rport->dd_data;
2135 rdata->pnode = NULL;
2136 ndlp->rport = NULL;
2137 }
2138 }
2139
2140 static int
2141 lpfc_matchdid(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2142 uint32_t did)
2143 {
2144 D_ID mydid, ndlpdid, matchdid;
2145
2146 if (did == Bcast_DID)
2147 return 0;
2148
2149 /* First check for Direct match */
2150 if (ndlp->nlp_DID == did)
2151 return 1;
2152
2153 /* Next check for area/domain identically equals 0 match */
2154 mydid.un.word = vport->fc_myDID;
2155 if ((mydid.un.b.domain == 0) && (mydid.un.b.area == 0)) {
2156 return 0;
2157 }
2158
2159 matchdid.un.word = did;
2160 ndlpdid.un.word = ndlp->nlp_DID;
2161 if (matchdid.un.b.id == ndlpdid.un.b.id) {
2162 if ((mydid.un.b.domain == matchdid.un.b.domain) &&
2163 (mydid.un.b.area == matchdid.un.b.area)) {
2164 if ((ndlpdid.un.b.domain == 0) &&
2165 (ndlpdid.un.b.area == 0)) {
2166 if (ndlpdid.un.b.id)
2167 return 1;
2168 }
2169 return 0;
2170 }
2171
2172 matchdid.un.word = ndlp->nlp_DID;
2173 if ((mydid.un.b.domain == ndlpdid.un.b.domain) &&
2174 (mydid.un.b.area == ndlpdid.un.b.area)) {
2175 if ((matchdid.un.b.domain == 0) &&
2176 (matchdid.un.b.area == 0)) {
2177 if (matchdid.un.b.id)
2178 return 1;
2179 }
2180 }
2181 }
2182 return 0;
2183 }
2184
2185 /* Search for a nodelist entry */
2186 static struct lpfc_nodelist *
2187 __lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did)
2188 {
2189 struct lpfc_nodelist *ndlp;
2190 uint32_t data1;
2191
2192 list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
2193 if (lpfc_matchdid(vport, ndlp, did)) {
2194 data1 = (((uint32_t) ndlp->nlp_state << 24) |
2195 ((uint32_t) ndlp->nlp_xri << 16) |
2196 ((uint32_t) ndlp->nlp_type << 8) |
2197 ((uint32_t) ndlp->nlp_rpi & 0xff));
2198 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
2199 "0929 FIND node DID "
2200 "Data: x%p x%x x%x x%x\n",
2201 ndlp, ndlp->nlp_DID,
2202 ndlp->nlp_flag, data1);
2203 return ndlp;
2204 }
2205 }
2206
2207 /* FIND node did <did> NOT FOUND */
2208 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
2209 "0932 FIND node did x%x NOT FOUND.\n", did);
2210 return NULL;
2211 }
2212
2213 struct lpfc_nodelist *
2214 lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did)
2215 {
2216 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2217 struct lpfc_nodelist *ndlp;
2218
2219 spin_lock_irq(shost->host_lock);
2220 ndlp = __lpfc_findnode_did(vport, did);
2221 spin_unlock_irq(shost->host_lock);
2222 return ndlp;
2223 }
2224
2225 struct lpfc_nodelist *
2226 lpfc_setup_disc_node(struct lpfc_vport *vport, uint32_t did)
2227 {
2228 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2229 struct lpfc_nodelist *ndlp;
2230
2231 ndlp = lpfc_findnode_did(vport, did);
2232 if (!ndlp) {
2233 if ((vport->fc_flag & FC_RSCN_MODE) != 0 &&
2234 lpfc_rscn_payload_check(vport, did) == 0)
2235 return NULL;
2236 ndlp = (struct lpfc_nodelist *)
2237 mempool_alloc(vport->phba->nlp_mem_pool, GFP_KERNEL);
2238 if (!ndlp)
2239 return NULL;
2240 lpfc_nlp_init(vport, ndlp, did);
2241 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2242 spin_lock_irq(shost->host_lock);
2243 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
2244 spin_unlock_irq(shost->host_lock);
2245 return ndlp;
2246 } else if (!NLP_CHK_NODE_ACT(ndlp)) {
2247 ndlp = lpfc_enable_node(vport, ndlp, NLP_STE_NPR_NODE);
2248 if (!ndlp)
2249 return NULL;
2250 spin_lock_irq(shost->host_lock);
2251 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
2252 spin_unlock_irq(shost->host_lock);
2253 return ndlp;
2254 }
2255
2256 if ((vport->fc_flag & FC_RSCN_MODE) &&
2257 !(vport->fc_flag & FC_NDISC_ACTIVE)) {
2258 if (lpfc_rscn_payload_check(vport, did)) {
2259 /* If we've already recieved a PLOGI from this NPort
2260 * we don't need to try to discover it again.
2261 */
2262 if (ndlp->nlp_flag & NLP_RCV_PLOGI)
2263 return NULL;
2264
2265 spin_lock_irq(shost->host_lock);
2266 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
2267 spin_unlock_irq(shost->host_lock);
2268
2269 /* Since this node is marked for discovery,
2270 * delay timeout is not needed.
2271 */
2272 lpfc_cancel_retry_delay_tmo(vport, ndlp);
2273 } else
2274 ndlp = NULL;
2275 } else {
2276 /* If we've already recieved a PLOGI from this NPort,
2277 * or we are already in the process of discovery on it,
2278 * we don't need to try to discover it again.
2279 */
2280 if (ndlp->nlp_state == NLP_STE_ADISC_ISSUE ||
2281 ndlp->nlp_state == NLP_STE_PLOGI_ISSUE ||
2282 ndlp->nlp_flag & NLP_RCV_PLOGI)
2283 return NULL;
2284 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2285 spin_lock_irq(shost->host_lock);
2286 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
2287 spin_unlock_irq(shost->host_lock);
2288 }
2289 return ndlp;
2290 }
2291
2292 /* Build a list of nodes to discover based on the loopmap */
2293 void
2294 lpfc_disc_list_loopmap(struct lpfc_vport *vport)
2295 {
2296 struct lpfc_hba *phba = vport->phba;
2297 int j;
2298 uint32_t alpa, index;
2299
2300 if (!lpfc_is_link_up(phba))
2301 return;
2302
2303 if (phba->fc_topology != TOPOLOGY_LOOP)
2304 return;
2305
2306 /* Check for loop map present or not */
2307 if (phba->alpa_map[0]) {
2308 for (j = 1; j <= phba->alpa_map[0]; j++) {
2309 alpa = phba->alpa_map[j];
2310 if (((vport->fc_myDID & 0xff) == alpa) || (alpa == 0))
2311 continue;
2312 lpfc_setup_disc_node(vport, alpa);
2313 }
2314 } else {
2315 /* No alpamap, so try all alpa's */
2316 for (j = 0; j < FC_MAXLOOP; j++) {
2317 /* If cfg_scan_down is set, start from highest
2318 * ALPA (0xef) to lowest (0x1).
2319 */
2320 if (vport->cfg_scan_down)
2321 index = j;
2322 else
2323 index = FC_MAXLOOP - j - 1;
2324 alpa = lpfcAlpaArray[index];
2325 if ((vport->fc_myDID & 0xff) == alpa)
2326 continue;
2327 lpfc_setup_disc_node(vport, alpa);
2328 }
2329 }
2330 return;
2331 }
2332
2333 void
2334 lpfc_issue_clear_la(struct lpfc_hba *phba, struct lpfc_vport *vport)
2335 {
2336 LPFC_MBOXQ_t *mbox;
2337 struct lpfc_sli *psli = &phba->sli;
2338 struct lpfc_sli_ring *extra_ring = &psli->ring[psli->extra_ring];
2339 struct lpfc_sli_ring *fcp_ring = &psli->ring[psli->fcp_ring];
2340 struct lpfc_sli_ring *next_ring = &psli->ring[psli->next_ring];
2341 int rc;
2342
2343 /*
2344 * if it's not a physical port or if we already send
2345 * clear_la then don't send it.
2346 */
2347 if ((phba->link_state >= LPFC_CLEAR_LA) ||
2348 (vport->port_type != LPFC_PHYSICAL_PORT))
2349 return;
2350
2351 /* Link up discovery */
2352 if ((mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL)) != NULL) {
2353 phba->link_state = LPFC_CLEAR_LA;
2354 lpfc_clear_la(phba, mbox);
2355 mbox->mbox_cmpl = lpfc_mbx_cmpl_clear_la;
2356 mbox->vport = vport;
2357 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
2358 if (rc == MBX_NOT_FINISHED) {
2359 mempool_free(mbox, phba->mbox_mem_pool);
2360 lpfc_disc_flush_list(vport);
2361 extra_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
2362 fcp_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
2363 next_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
2364 phba->link_state = LPFC_HBA_ERROR;
2365 }
2366 }
2367 }
2368
2369 /* Reg_vpi to tell firmware to resume normal operations */
2370 void
2371 lpfc_issue_reg_vpi(struct lpfc_hba *phba, struct lpfc_vport *vport)
2372 {
2373 LPFC_MBOXQ_t *regvpimbox;
2374
2375 regvpimbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2376 if (regvpimbox) {
2377 lpfc_reg_vpi(phba, vport->vpi, vport->fc_myDID, regvpimbox);
2378 regvpimbox->mbox_cmpl = lpfc_mbx_cmpl_reg_vpi;
2379 regvpimbox->vport = vport;
2380 if (lpfc_sli_issue_mbox(phba, regvpimbox, MBX_NOWAIT)
2381 == MBX_NOT_FINISHED) {
2382 mempool_free(regvpimbox, phba->mbox_mem_pool);
2383 }
2384 }
2385 }
2386
2387 /* Start Link up / RSCN discovery on NPR nodes */
2388 void
2389 lpfc_disc_start(struct lpfc_vport *vport)
2390 {
2391 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2392 struct lpfc_hba *phba = vport->phba;
2393 uint32_t num_sent;
2394 uint32_t clear_la_pending;
2395 int did_changed;
2396
2397 if (!lpfc_is_link_up(phba))
2398 return;
2399
2400 if (phba->link_state == LPFC_CLEAR_LA)
2401 clear_la_pending = 1;
2402 else
2403 clear_la_pending = 0;
2404
2405 if (vport->port_state < LPFC_VPORT_READY)
2406 vport->port_state = LPFC_DISC_AUTH;
2407
2408 lpfc_set_disctmo(vport);
2409
2410 if (vport->fc_prevDID == vport->fc_myDID)
2411 did_changed = 0;
2412 else
2413 did_changed = 1;
2414
2415 vport->fc_prevDID = vport->fc_myDID;
2416 vport->num_disc_nodes = 0;
2417
2418 /* Start Discovery state <hba_state> */
2419 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2420 "0202 Start Discovery hba state x%x "
2421 "Data: x%x x%x x%x\n",
2422 vport->port_state, vport->fc_flag, vport->fc_plogi_cnt,
2423 vport->fc_adisc_cnt);
2424
2425 /* First do ADISCs - if any */
2426 num_sent = lpfc_els_disc_adisc(vport);
2427
2428 if (num_sent)
2429 return;
2430
2431 /*
2432 * For SLI3, cmpl_reg_vpi will set port_state to READY, and
2433 * continue discovery.
2434 */
2435 if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
2436 !(vport->fc_flag & FC_PT2PT) &&
2437 !(vport->fc_flag & FC_RSCN_MODE)) {
2438 lpfc_issue_reg_vpi(phba, vport);
2439 return;
2440 }
2441
2442 /*
2443 * For SLI2, we need to set port_state to READY and continue
2444 * discovery.
2445 */
2446 if (vport->port_state < LPFC_VPORT_READY && !clear_la_pending) {
2447 /* If we get here, there is nothing to ADISC */
2448 if (vport->port_type == LPFC_PHYSICAL_PORT)
2449 lpfc_issue_clear_la(phba, vport);
2450
2451 if (!(vport->fc_flag & FC_ABORT_DISCOVERY)) {
2452 vport->num_disc_nodes = 0;
2453 /* go thru NPR nodes and issue ELS PLOGIs */
2454 if (vport->fc_npr_cnt)
2455 lpfc_els_disc_plogi(vport);
2456
2457 if (!vport->num_disc_nodes) {
2458 spin_lock_irq(shost->host_lock);
2459 vport->fc_flag &= ~FC_NDISC_ACTIVE;
2460 spin_unlock_irq(shost->host_lock);
2461 lpfc_can_disctmo(vport);
2462 }
2463 }
2464 vport->port_state = LPFC_VPORT_READY;
2465 } else {
2466 /* Next do PLOGIs - if any */
2467 num_sent = lpfc_els_disc_plogi(vport);
2468
2469 if (num_sent)
2470 return;
2471
2472 if (vport->fc_flag & FC_RSCN_MODE) {
2473 /* Check to see if more RSCNs came in while we
2474 * were processing this one.
2475 */
2476 if ((vport->fc_rscn_id_cnt == 0) &&
2477 (!(vport->fc_flag & FC_RSCN_DISCOVERY))) {
2478 spin_lock_irq(shost->host_lock);
2479 vport->fc_flag &= ~FC_RSCN_MODE;
2480 spin_unlock_irq(shost->host_lock);
2481 lpfc_can_disctmo(vport);
2482 } else
2483 lpfc_els_handle_rscn(vport);
2484 }
2485 }
2486 return;
2487 }
2488
2489 /*
2490 * Ignore completion for all IOCBs on tx and txcmpl queue for ELS
2491 * ring the match the sppecified nodelist.
2492 */
2493 static void
2494 lpfc_free_tx(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
2495 {
2496 LIST_HEAD(completions);
2497 struct lpfc_sli *psli;
2498 IOCB_t *icmd;
2499 struct lpfc_iocbq *iocb, *next_iocb;
2500 struct lpfc_sli_ring *pring;
2501
2502 psli = &phba->sli;
2503 pring = &psli->ring[LPFC_ELS_RING];
2504
2505 /* Error matching iocb on txq or txcmplq
2506 * First check the txq.
2507 */
2508 spin_lock_irq(&phba->hbalock);
2509 list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
2510 if (iocb->context1 != ndlp) {
2511 continue;
2512 }
2513 icmd = &iocb->iocb;
2514 if ((icmd->ulpCommand == CMD_ELS_REQUEST64_CR) ||
2515 (icmd->ulpCommand == CMD_XMIT_ELS_RSP64_CX)) {
2516
2517 list_move_tail(&iocb->list, &completions);
2518 pring->txq_cnt--;
2519 }
2520 }
2521
2522 /* Next check the txcmplq */
2523 list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) {
2524 if (iocb->context1 != ndlp) {
2525 continue;
2526 }
2527 icmd = &iocb->iocb;
2528 if (icmd->ulpCommand == CMD_ELS_REQUEST64_CR ||
2529 icmd->ulpCommand == CMD_XMIT_ELS_RSP64_CX) {
2530 lpfc_sli_issue_abort_iotag(phba, pring, iocb);
2531 }
2532 }
2533 spin_unlock_irq(&phba->hbalock);
2534
2535 while (!list_empty(&completions)) {
2536 iocb = list_get_first(&completions, struct lpfc_iocbq, list);
2537 list_del_init(&iocb->list);
2538
2539 if (!iocb->iocb_cmpl)
2540 lpfc_sli_release_iocbq(phba, iocb);
2541 else {
2542 icmd = &iocb->iocb;
2543 icmd->ulpStatus = IOSTAT_LOCAL_REJECT;
2544 icmd->un.ulpWord[4] = IOERR_SLI_ABORTED;
2545 (iocb->iocb_cmpl) (phba, iocb, iocb);
2546 }
2547 }
2548 }
2549
2550 static void
2551 lpfc_disc_flush_list(struct lpfc_vport *vport)
2552 {
2553 struct lpfc_nodelist *ndlp, *next_ndlp;
2554 struct lpfc_hba *phba = vport->phba;
2555
2556 if (vport->fc_plogi_cnt || vport->fc_adisc_cnt) {
2557 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes,
2558 nlp_listp) {
2559 if (!NLP_CHK_NODE_ACT(ndlp))
2560 continue;
2561 if (ndlp->nlp_state == NLP_STE_PLOGI_ISSUE ||
2562 ndlp->nlp_state == NLP_STE_ADISC_ISSUE) {
2563 lpfc_free_tx(phba, ndlp);
2564 }
2565 }
2566 }
2567 }
2568
2569 void
2570 lpfc_cleanup_discovery_resources(struct lpfc_vport *vport)
2571 {
2572 lpfc_els_flush_rscn(vport);
2573 lpfc_els_flush_cmd(vport);
2574 lpfc_disc_flush_list(vport);
2575 }
2576
2577 /*****************************************************************************/
2578 /*
2579 * NAME: lpfc_disc_timeout
2580 *
2581 * FUNCTION: Fibre Channel driver discovery timeout routine.
2582 *
2583 * EXECUTION ENVIRONMENT: interrupt only
2584 *
2585 * CALLED FROM:
2586 * Timer function
2587 *
2588 * RETURNS:
2589 * none
2590 */
2591 /*****************************************************************************/
2592 void
2593 lpfc_disc_timeout(unsigned long ptr)
2594 {
2595 struct lpfc_vport *vport = (struct lpfc_vport *) ptr;
2596 struct lpfc_hba *phba = vport->phba;
2597 uint32_t tmo_posted;
2598 unsigned long flags = 0;
2599
2600 if (unlikely(!phba))
2601 return;
2602
2603 spin_lock_irqsave(&vport->work_port_lock, flags);
2604 tmo_posted = vport->work_port_events & WORKER_DISC_TMO;
2605 if (!tmo_posted)
2606 vport->work_port_events |= WORKER_DISC_TMO;
2607 spin_unlock_irqrestore(&vport->work_port_lock, flags);
2608
2609 if (!tmo_posted)
2610 lpfc_worker_wake_up(phba);
2611 return;
2612 }
2613
2614 static void
2615 lpfc_disc_timeout_handler(struct lpfc_vport *vport)
2616 {
2617 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2618 struct lpfc_hba *phba = vport->phba;
2619 struct lpfc_sli *psli = &phba->sli;
2620 struct lpfc_nodelist *ndlp, *next_ndlp;
2621 LPFC_MBOXQ_t *initlinkmbox;
2622 int rc, clrlaerr = 0;
2623
2624 if (!(vport->fc_flag & FC_DISC_TMO))
2625 return;
2626
2627 spin_lock_irq(shost->host_lock);
2628 vport->fc_flag &= ~FC_DISC_TMO;
2629 spin_unlock_irq(shost->host_lock);
2630
2631 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
2632 "disc timeout: state:x%x rtry:x%x flg:x%x",
2633 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
2634
2635 switch (vport->port_state) {
2636
2637 case LPFC_LOCAL_CFG_LINK:
2638 /* port_state is identically LPFC_LOCAL_CFG_LINK while waiting for
2639 * FAN
2640 */
2641 /* FAN timeout */
2642 lpfc_printf_vlog(vport, KERN_WARNING, LOG_DISCOVERY,
2643 "0221 FAN timeout\n");
2644 /* Start discovery by sending FLOGI, clean up old rpis */
2645 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes,
2646 nlp_listp) {
2647 if (!NLP_CHK_NODE_ACT(ndlp))
2648 continue;
2649 if (ndlp->nlp_state != NLP_STE_NPR_NODE)
2650 continue;
2651 if (ndlp->nlp_type & NLP_FABRIC) {
2652 /* Clean up the ndlp on Fabric connections */
2653 lpfc_drop_node(vport, ndlp);
2654
2655 } else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) {
2656 /* Fail outstanding IO now since device
2657 * is marked for PLOGI.
2658 */
2659 lpfc_unreg_rpi(vport, ndlp);
2660 }
2661 }
2662 if (vport->port_state != LPFC_FLOGI) {
2663 lpfc_initial_flogi(vport);
2664 return;
2665 }
2666 break;
2667
2668 case LPFC_FDISC:
2669 case LPFC_FLOGI:
2670 /* port_state is identically LPFC_FLOGI while waiting for FLOGI cmpl */
2671 /* Initial FLOGI timeout */
2672 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2673 "0222 Initial %s timeout\n",
2674 vport->vpi ? "FDISC" : "FLOGI");
2675
2676 /* Assume no Fabric and go on with discovery.
2677 * Check for outstanding ELS FLOGI to abort.
2678 */
2679
2680 /* FLOGI failed, so just use loop map to make discovery list */
2681 lpfc_disc_list_loopmap(vport);
2682
2683 /* Start discovery */
2684 lpfc_disc_start(vport);
2685 break;
2686
2687 case LPFC_FABRIC_CFG_LINK:
2688 /* hba_state is identically LPFC_FABRIC_CFG_LINK while waiting for
2689 NameServer login */
2690 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2691 "0223 Timeout while waiting for "
2692 "NameServer login\n");
2693 /* Next look for NameServer ndlp */
2694 ndlp = lpfc_findnode_did(vport, NameServer_DID);
2695 if (ndlp && NLP_CHK_NODE_ACT(ndlp))
2696 lpfc_els_abort(phba, ndlp);
2697
2698 /* ReStart discovery */
2699 goto restart_disc;
2700
2701 case LPFC_NS_QRY:
2702 /* Check for wait for NameServer Rsp timeout */
2703 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2704 "0224 NameServer Query timeout "
2705 "Data: x%x x%x\n",
2706 vport->fc_ns_retry, LPFC_MAX_NS_RETRY);
2707
2708 if (vport->fc_ns_retry < LPFC_MAX_NS_RETRY) {
2709 /* Try it one more time */
2710 vport->fc_ns_retry++;
2711 rc = lpfc_ns_cmd(vport, SLI_CTNS_GID_FT,
2712 vport->fc_ns_retry, 0);
2713 if (rc == 0)
2714 break;
2715 }
2716 vport->fc_ns_retry = 0;
2717
2718 restart_disc:
2719 /*
2720 * Discovery is over.
2721 * set port_state to PORT_READY if SLI2.
2722 * cmpl_reg_vpi will set port_state to READY for SLI3.
2723 */
2724 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
2725 lpfc_issue_reg_vpi(phba, vport);
2726 else { /* NPIV Not enabled */
2727 lpfc_issue_clear_la(phba, vport);
2728 vport->port_state = LPFC_VPORT_READY;
2729 }
2730
2731 /* Setup and issue mailbox INITIALIZE LINK command */
2732 initlinkmbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2733 if (!initlinkmbox) {
2734 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2735 "0206 Device Discovery "
2736 "completion error\n");
2737 phba->link_state = LPFC_HBA_ERROR;
2738 break;
2739 }
2740
2741 lpfc_linkdown(phba);
2742 lpfc_init_link(phba, initlinkmbox, phba->cfg_topology,
2743 phba->cfg_link_speed);
2744 initlinkmbox->mb.un.varInitLnk.lipsr_AL_PA = 0;
2745 initlinkmbox->vport = vport;
2746 initlinkmbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
2747 rc = lpfc_sli_issue_mbox(phba, initlinkmbox, MBX_NOWAIT);
2748 lpfc_set_loopback_flag(phba);
2749 if (rc == MBX_NOT_FINISHED)
2750 mempool_free(initlinkmbox, phba->mbox_mem_pool);
2751
2752 break;
2753
2754 case LPFC_DISC_AUTH:
2755 /* Node Authentication timeout */
2756 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2757 "0227 Node Authentication timeout\n");
2758 lpfc_disc_flush_list(vport);
2759
2760 /*
2761 * set port_state to PORT_READY if SLI2.
2762 * cmpl_reg_vpi will set port_state to READY for SLI3.
2763 */
2764 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
2765 lpfc_issue_reg_vpi(phba, vport);
2766 else { /* NPIV Not enabled */
2767 lpfc_issue_clear_la(phba, vport);
2768 vport->port_state = LPFC_VPORT_READY;
2769 }
2770 break;
2771
2772 case LPFC_VPORT_READY:
2773 if (vport->fc_flag & FC_RSCN_MODE) {
2774 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2775 "0231 RSCN timeout Data: x%x "
2776 "x%x\n",
2777 vport->fc_ns_retry, LPFC_MAX_NS_RETRY);
2778
2779 /* Cleanup any outstanding ELS commands */
2780 lpfc_els_flush_cmd(vport);
2781
2782 lpfc_els_flush_rscn(vport);
2783 lpfc_disc_flush_list(vport);
2784 }
2785 break;
2786
2787 default:
2788 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2789 "0229 Unexpected discovery timeout, "
2790 "vport State x%x\n", vport->port_state);
2791 break;
2792 }
2793
2794 switch (phba->link_state) {
2795 case LPFC_CLEAR_LA:
2796 /* CLEAR LA timeout */
2797 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2798 "0228 CLEAR LA timeout\n");
2799 clrlaerr = 1;
2800 break;
2801
2802 case LPFC_LINK_UP:
2803 lpfc_issue_clear_la(phba, vport);
2804 /* Drop thru */
2805 case LPFC_LINK_UNKNOWN:
2806 case LPFC_WARM_START:
2807 case LPFC_INIT_START:
2808 case LPFC_INIT_MBX_CMDS:
2809 case LPFC_LINK_DOWN:
2810 case LPFC_HBA_ERROR:
2811 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2812 "0230 Unexpected timeout, hba link "
2813 "state x%x\n", phba->link_state);
2814 clrlaerr = 1;
2815 break;
2816
2817 case LPFC_HBA_READY:
2818 break;
2819 }
2820
2821 if (clrlaerr) {
2822 lpfc_disc_flush_list(vport);
2823 psli->ring[(psli->extra_ring)].flag &= ~LPFC_STOP_IOCB_EVENT;
2824 psli->ring[(psli->fcp_ring)].flag &= ~LPFC_STOP_IOCB_EVENT;
2825 psli->ring[(psli->next_ring)].flag &= ~LPFC_STOP_IOCB_EVENT;
2826 vport->port_state = LPFC_VPORT_READY;
2827 }
2828
2829 return;
2830 }
2831
2832 /*
2833 * This routine handles processing a NameServer REG_LOGIN mailbox
2834 * command upon completion. It is setup in the LPFC_MBOXQ
2835 * as the completion routine when the command is
2836 * handed off to the SLI layer.
2837 */
2838 void
2839 lpfc_mbx_cmpl_fdmi_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
2840 {
2841 MAILBOX_t *mb = &pmb->mb;
2842 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
2843 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2;
2844 struct lpfc_vport *vport = pmb->vport;
2845
2846 pmb->context1 = NULL;
2847
2848 ndlp->nlp_rpi = mb->un.varWords[0];
2849 ndlp->nlp_type |= NLP_FABRIC;
2850 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
2851
2852 /*
2853 * Start issuing Fabric-Device Management Interface (FDMI) command to
2854 * 0xfffffa (FDMI well known port) or Delay issuing FDMI command if
2855 * fdmi-on=2 (supporting RPA/hostnmae)
2856 */
2857
2858 if (vport->cfg_fdmi_on == 1)
2859 lpfc_fdmi_cmd(vport, ndlp, SLI_MGMT_DHBA);
2860 else
2861 mod_timer(&vport->fc_fdmitmo, jiffies + HZ * 60);
2862
2863 /* decrement the node reference count held for this callback
2864 * function.
2865 */
2866 lpfc_nlp_put(ndlp);
2867 lpfc_mbuf_free(phba, mp->virt, mp->phys);
2868 kfree(mp);
2869 mempool_free(pmb, phba->mbox_mem_pool);
2870
2871 return;
2872 }
2873
2874 static int
2875 lpfc_filter_by_rpi(struct lpfc_nodelist *ndlp, void *param)
2876 {
2877 uint16_t *rpi = param;
2878
2879 return ndlp->nlp_rpi == *rpi;
2880 }
2881
2882 static int
2883 lpfc_filter_by_wwpn(struct lpfc_nodelist *ndlp, void *param)
2884 {
2885 return memcmp(&ndlp->nlp_portname, param,
2886 sizeof(ndlp->nlp_portname)) == 0;
2887 }
2888
2889 static struct lpfc_nodelist *
2890 __lpfc_find_node(struct lpfc_vport *vport, node_filter filter, void *param)
2891 {
2892 struct lpfc_nodelist *ndlp;
2893
2894 list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
2895 if (filter(ndlp, param))
2896 return ndlp;
2897 }
2898 return NULL;
2899 }
2900
2901 /*
2902 * This routine looks up the ndlp lists for the given RPI. If rpi found it
2903 * returns the node list element pointer else return NULL.
2904 */
2905 struct lpfc_nodelist *
2906 __lpfc_findnode_rpi(struct lpfc_vport *vport, uint16_t rpi)
2907 {
2908 return __lpfc_find_node(vport, lpfc_filter_by_rpi, &rpi);
2909 }
2910
2911 /*
2912 * This routine looks up the ndlp lists for the given WWPN. If WWPN found it
2913 * returns the node element list pointer else return NULL.
2914 */
2915 struct lpfc_nodelist *
2916 lpfc_findnode_wwpn(struct lpfc_vport *vport, struct lpfc_name *wwpn)
2917 {
2918 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2919 struct lpfc_nodelist *ndlp;
2920
2921 spin_lock_irq(shost->host_lock);
2922 ndlp = __lpfc_find_node(vport, lpfc_filter_by_wwpn, wwpn);
2923 spin_unlock_irq(shost->host_lock);
2924 return ndlp;
2925 }
2926
2927 void
2928 lpfc_nlp_init(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2929 uint32_t did)
2930 {
2931 memset(ndlp, 0, sizeof (struct lpfc_nodelist));
2932 INIT_LIST_HEAD(&ndlp->els_retry_evt.evt_listp);
2933 INIT_LIST_HEAD(&ndlp->dev_loss_evt.evt_listp);
2934 init_timer(&ndlp->nlp_delayfunc);
2935 ndlp->nlp_delayfunc.function = lpfc_els_retry_delay;
2936 ndlp->nlp_delayfunc.data = (unsigned long)ndlp;
2937 ndlp->nlp_DID = did;
2938 ndlp->vport = vport;
2939 ndlp->nlp_sid = NLP_NO_SID;
2940 INIT_LIST_HEAD(&ndlp->nlp_listp);
2941 kref_init(&ndlp->kref);
2942 NLP_INT_NODE_ACT(ndlp);
2943
2944 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
2945 "node init: did:x%x",
2946 ndlp->nlp_DID, 0, 0);
2947
2948 return;
2949 }
2950
2951 /* This routine releases all resources associated with a specifc NPort's ndlp
2952 * and mempool_free's the nodelist.
2953 */
2954 static void
2955 lpfc_nlp_release(struct kref *kref)
2956 {
2957 struct lpfc_hba *phba;
2958 unsigned long flags;
2959 struct lpfc_nodelist *ndlp = container_of(kref, struct lpfc_nodelist,
2960 kref);
2961
2962 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
2963 "node release: did:x%x flg:x%x type:x%x",
2964 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
2965
2966 lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE,
2967 "0279 lpfc_nlp_release: ndlp:x%p "
2968 "usgmap:x%x refcnt:%d\n",
2969 (void *)ndlp, ndlp->nlp_usg_map,
2970 atomic_read(&ndlp->kref.refcount));
2971
2972 /* remove ndlp from action. */
2973 lpfc_nlp_remove(ndlp->vport, ndlp);
2974
2975 /* clear the ndlp active flag for all release cases */
2976 phba = ndlp->vport->phba;
2977 spin_lock_irqsave(&phba->ndlp_lock, flags);
2978 NLP_CLR_NODE_ACT(ndlp);
2979 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
2980
2981 /* free ndlp memory for final ndlp release */
2982 if (NLP_CHK_FREE_REQ(ndlp))
2983 mempool_free(ndlp, ndlp->vport->phba->nlp_mem_pool);
2984 }
2985
2986 /* This routine bumps the reference count for a ndlp structure to ensure
2987 * that one discovery thread won't free a ndlp while another discovery thread
2988 * is using it.
2989 */
2990 struct lpfc_nodelist *
2991 lpfc_nlp_get(struct lpfc_nodelist *ndlp)
2992 {
2993 struct lpfc_hba *phba;
2994 unsigned long flags;
2995
2996 if (ndlp) {
2997 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
2998 "node get: did:x%x flg:x%x refcnt:x%x",
2999 ndlp->nlp_DID, ndlp->nlp_flag,
3000 atomic_read(&ndlp->kref.refcount));
3001 /* The check of ndlp usage to prevent incrementing the
3002 * ndlp reference count that is in the process of being
3003 * released.
3004 */
3005 phba = ndlp->vport->phba;
3006 spin_lock_irqsave(&phba->ndlp_lock, flags);
3007 if (!NLP_CHK_NODE_ACT(ndlp) || NLP_CHK_FREE_ACK(ndlp)) {
3008 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
3009 lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_NODE,
3010 "0276 lpfc_nlp_get: ndlp:x%p "
3011 "usgmap:x%x refcnt:%d\n",
3012 (void *)ndlp, ndlp->nlp_usg_map,
3013 atomic_read(&ndlp->kref.refcount));
3014 return NULL;
3015 } else
3016 kref_get(&ndlp->kref);
3017 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
3018 }
3019 return ndlp;
3020 }
3021
3022 /* This routine decrements the reference count for a ndlp structure. If the
3023 * count goes to 0, this indicates the the associated nodelist should be
3024 * freed. Returning 1 indicates the ndlp resource has been released; on the
3025 * other hand, returning 0 indicates the ndlp resource has not been released
3026 * yet.
3027 */
3028 int
3029 lpfc_nlp_put(struct lpfc_nodelist *ndlp)
3030 {
3031 struct lpfc_hba *phba;
3032 unsigned long flags;
3033
3034 if (!ndlp)
3035 return 1;
3036
3037 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
3038 "node put: did:x%x flg:x%x refcnt:x%x",
3039 ndlp->nlp_DID, ndlp->nlp_flag,
3040 atomic_read(&ndlp->kref.refcount));
3041 phba = ndlp->vport->phba;
3042 spin_lock_irqsave(&phba->ndlp_lock, flags);
3043 /* Check the ndlp memory free acknowledge flag to avoid the
3044 * possible race condition that kref_put got invoked again
3045 * after previous one has done ndlp memory free.
3046 */
3047 if (NLP_CHK_FREE_ACK(ndlp)) {
3048 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
3049 lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_NODE,
3050 "0274 lpfc_nlp_put: ndlp:x%p "
3051 "usgmap:x%x refcnt:%d\n",
3052 (void *)ndlp, ndlp->nlp_usg_map,
3053 atomic_read(&ndlp->kref.refcount));
3054 return 1;
3055 }
3056 /* Check the ndlp inactivate log flag to avoid the possible
3057 * race condition that kref_put got invoked again after ndlp
3058 * is already in inactivating state.
3059 */
3060 if (NLP_CHK_IACT_REQ(ndlp)) {
3061 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
3062 lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_NODE,
3063 "0275 lpfc_nlp_put: ndlp:x%p "
3064 "usgmap:x%x refcnt:%d\n",
3065 (void *)ndlp, ndlp->nlp_usg_map,
3066 atomic_read(&ndlp->kref.refcount));
3067 return 1;
3068 }
3069 /* For last put, mark the ndlp usage flags to make sure no
3070 * other kref_get and kref_put on the same ndlp shall get
3071 * in between the process when the final kref_put has been
3072 * invoked on this ndlp.
3073 */
3074 if (atomic_read(&ndlp->kref.refcount) == 1) {
3075 /* Indicate ndlp is put to inactive state. */
3076 NLP_SET_IACT_REQ(ndlp);
3077 /* Acknowledge ndlp memory free has been seen. */
3078 if (NLP_CHK_FREE_REQ(ndlp))
3079 NLP_SET_FREE_ACK(ndlp);
3080 }
3081 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
3082 /* Note, the kref_put returns 1 when decrementing a reference
3083 * count that was 1, it invokes the release callback function,
3084 * but it still left the reference count as 1 (not actually
3085 * performs the last decrementation). Otherwise, it actually
3086 * decrements the reference count and returns 0.
3087 */
3088 return kref_put(&ndlp->kref, lpfc_nlp_release);
3089 }
3090
3091 /* This routine free's the specified nodelist if it is not in use
3092 * by any other discovery thread. This routine returns 1 if the
3093 * ndlp has been freed. A return value of 0 indicates the ndlp is
3094 * not yet been released.
3095 */
3096 int
3097 lpfc_nlp_not_used(struct lpfc_nodelist *ndlp)
3098 {
3099 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
3100 "node not used: did:x%x flg:x%x refcnt:x%x",
3101 ndlp->nlp_DID, ndlp->nlp_flag,
3102 atomic_read(&ndlp->kref.refcount));
3103 if (atomic_read(&ndlp->kref.refcount) == 1)
3104 if (lpfc_nlp_put(ndlp))
3105 return 1;
3106 return 0;
3107 }
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree