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Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
[mirror_ubuntu-artful-kernel.git] / drivers / scsi / lpfc / lpfc_hbadisc.c
1 /*******************************************************************
2 * This file is part of the Emulex Linux Device Driver for *
3 * Fibre Channel Host Bus Adapters. *
4 * Copyright (C) 2004-2008 Emulex. All rights reserved. *
5 * EMULEX and SLI are trademarks of Emulex. *
6 * www.emulex.com *
7 * Portions Copyright (C) 2004-2005 Christoph Hellwig *
8 * *
9 * This program is free software; you can redistribute it and/or *
10 * modify it under the terms of version 2 of the GNU General *
11 * Public License as published by the Free Software Foundation. *
12 * This program is distributed in the hope that it will be useful. *
13 * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND *
14 * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, *
15 * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE *
16 * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *
17 * TO BE LEGALLY INVALID. See the GNU General Public License for *
18 * more details, a copy of which can be found in the file COPYING *
19 * included with this package. *
20 *******************************************************************/
21
22 #include <linux/blkdev.h>
23 #include <linux/pci.h>
24 #include <linux/kthread.h>
25 #include <linux/interrupt.h>
26
27 #include <scsi/scsi.h>
28 #include <scsi/scsi_device.h>
29 #include <scsi/scsi_host.h>
30 #include <scsi/scsi_transport_fc.h>
31
32 #include "lpfc_hw.h"
33 #include "lpfc_nl.h"
34 #include "lpfc_disc.h"
35 #include "lpfc_sli.h"
36 #include "lpfc_scsi.h"
37 #include "lpfc.h"
38 #include "lpfc_logmsg.h"
39 #include "lpfc_crtn.h"
40 #include "lpfc_vport.h"
41 #include "lpfc_debugfs.h"
42
43 /* AlpaArray for assignment of scsid for scan-down and bind_method */
44 static uint8_t lpfcAlpaArray[] = {
45 0xEF, 0xE8, 0xE4, 0xE2, 0xE1, 0xE0, 0xDC, 0xDA, 0xD9, 0xD6,
46 0xD5, 0xD4, 0xD3, 0xD2, 0xD1, 0xCE, 0xCD, 0xCC, 0xCB, 0xCA,
47 0xC9, 0xC7, 0xC6, 0xC5, 0xC3, 0xBC, 0xBA, 0xB9, 0xB6, 0xB5,
48 0xB4, 0xB3, 0xB2, 0xB1, 0xAE, 0xAD, 0xAC, 0xAB, 0xAA, 0xA9,
49 0xA7, 0xA6, 0xA5, 0xA3, 0x9F, 0x9E, 0x9D, 0x9B, 0x98, 0x97,
50 0x90, 0x8F, 0x88, 0x84, 0x82, 0x81, 0x80, 0x7C, 0x7A, 0x79,
51 0x76, 0x75, 0x74, 0x73, 0x72, 0x71, 0x6E, 0x6D, 0x6C, 0x6B,
52 0x6A, 0x69, 0x67, 0x66, 0x65, 0x63, 0x5C, 0x5A, 0x59, 0x56,
53 0x55, 0x54, 0x53, 0x52, 0x51, 0x4E, 0x4D, 0x4C, 0x4B, 0x4A,
54 0x49, 0x47, 0x46, 0x45, 0x43, 0x3C, 0x3A, 0x39, 0x36, 0x35,
55 0x34, 0x33, 0x32, 0x31, 0x2E, 0x2D, 0x2C, 0x2B, 0x2A, 0x29,
56 0x27, 0x26, 0x25, 0x23, 0x1F, 0x1E, 0x1D, 0x1B, 0x18, 0x17,
57 0x10, 0x0F, 0x08, 0x04, 0x02, 0x01
58 };
59
60 static void lpfc_disc_timeout_handler(struct lpfc_vport *);
61 static void lpfc_disc_flush_list(struct lpfc_vport *vport);
62
63 void
64 lpfc_terminate_rport_io(struct fc_rport *rport)
65 {
66 struct lpfc_rport_data *rdata;
67 struct lpfc_nodelist * ndlp;
68 struct lpfc_hba *phba;
69
70 rdata = rport->dd_data;
71 ndlp = rdata->pnode;
72
73 if (!ndlp || !NLP_CHK_NODE_ACT(ndlp)) {
74 if (rport->roles & FC_RPORT_ROLE_FCP_TARGET)
75 printk(KERN_ERR "Cannot find remote node"
76 " to terminate I/O Data x%x\n",
77 rport->port_id);
78 return;
79 }
80
81 phba = ndlp->vport->phba;
82
83 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_RPORT,
84 "rport terminate: sid:x%x did:x%x flg:x%x",
85 ndlp->nlp_sid, ndlp->nlp_DID, ndlp->nlp_flag);
86
87 if (ndlp->nlp_sid != NLP_NO_SID) {
88 lpfc_sli_abort_iocb(ndlp->vport,
89 &phba->sli.ring[phba->sli.fcp_ring],
90 ndlp->nlp_sid, 0, LPFC_CTX_TGT);
91 }
92 }
93
94 /*
95 * This function will be called when dev_loss_tmo fire.
96 */
97 void
98 lpfc_dev_loss_tmo_callbk(struct fc_rport *rport)
99 {
100 struct lpfc_rport_data *rdata;
101 struct lpfc_nodelist * ndlp;
102 struct lpfc_vport *vport;
103 struct lpfc_hba *phba;
104 struct lpfc_work_evt *evtp;
105 int put_node;
106 int put_rport;
107
108 rdata = rport->dd_data;
109 ndlp = rdata->pnode;
110 if (!ndlp || !NLP_CHK_NODE_ACT(ndlp))
111 return;
112
113 vport = ndlp->vport;
114 phba = vport->phba;
115
116 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
117 "rport devlosscb: sid:x%x did:x%x flg:x%x",
118 ndlp->nlp_sid, ndlp->nlp_DID, ndlp->nlp_flag);
119
120 /* Don't defer this if we are in the process of deleting the vport
121 * or unloading the driver. The unload will cleanup the node
122 * appropriately we just need to cleanup the ndlp rport info here.
123 */
124 if (vport->load_flag & FC_UNLOADING) {
125 put_node = rdata->pnode != NULL;
126 put_rport = ndlp->rport != NULL;
127 rdata->pnode = NULL;
128 ndlp->rport = NULL;
129 if (put_node)
130 lpfc_nlp_put(ndlp);
131 if (put_rport)
132 put_device(&rport->dev);
133 return;
134 }
135
136 if (ndlp->nlp_state == NLP_STE_MAPPED_NODE)
137 return;
138
139 evtp = &ndlp->dev_loss_evt;
140
141 if (!list_empty(&evtp->evt_listp))
142 return;
143
144 spin_lock_irq(&phba->hbalock);
145 /* We need to hold the node by incrementing the reference
146 * count until this queued work is done
147 */
148 evtp->evt_arg1 = lpfc_nlp_get(ndlp);
149 if (evtp->evt_arg1) {
150 evtp->evt = LPFC_EVT_DEV_LOSS;
151 list_add_tail(&evtp->evt_listp, &phba->work_list);
152 lpfc_worker_wake_up(phba);
153 }
154 spin_unlock_irq(&phba->hbalock);
155
156 return;
157 }
158
159 /*
160 * This function is called from the worker thread when dev_loss_tmo
161 * expire.
162 */
163 static void
164 lpfc_dev_loss_tmo_handler(struct lpfc_nodelist *ndlp)
165 {
166 struct lpfc_rport_data *rdata;
167 struct fc_rport *rport;
168 struct lpfc_vport *vport;
169 struct lpfc_hba *phba;
170 uint8_t *name;
171 int put_node;
172 int put_rport;
173 int warn_on = 0;
174
175 rport = ndlp->rport;
176
177 if (!rport)
178 return;
179
180 rdata = rport->dd_data;
181 name = (uint8_t *) &ndlp->nlp_portname;
182 vport = ndlp->vport;
183 phba = vport->phba;
184
185 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
186 "rport devlosstmo:did:x%x type:x%x id:x%x",
187 ndlp->nlp_DID, ndlp->nlp_type, rport->scsi_target_id);
188
189 /* Don't defer this if we are in the process of deleting the vport
190 * or unloading the driver. The unload will cleanup the node
191 * appropriately we just need to cleanup the ndlp rport info here.
192 */
193 if (vport->load_flag & FC_UNLOADING) {
194 if (ndlp->nlp_sid != NLP_NO_SID) {
195 /* flush the target */
196 lpfc_sli_abort_iocb(vport,
197 &phba->sli.ring[phba->sli.fcp_ring],
198 ndlp->nlp_sid, 0, LPFC_CTX_TGT);
199 }
200 put_node = rdata->pnode != NULL;
201 put_rport = ndlp->rport != NULL;
202 rdata->pnode = NULL;
203 ndlp->rport = NULL;
204 if (put_node)
205 lpfc_nlp_put(ndlp);
206 if (put_rport)
207 put_device(&rport->dev);
208 return;
209 }
210
211 if (ndlp->nlp_state == NLP_STE_MAPPED_NODE) {
212 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
213 "0284 Devloss timeout Ignored on "
214 "WWPN %x:%x:%x:%x:%x:%x:%x:%x "
215 "NPort x%x\n",
216 *name, *(name+1), *(name+2), *(name+3),
217 *(name+4), *(name+5), *(name+6), *(name+7),
218 ndlp->nlp_DID);
219 return;
220 }
221
222 if (ndlp->nlp_type & NLP_FABRIC) {
223 /* We will clean up these Nodes in linkup */
224 put_node = rdata->pnode != NULL;
225 put_rport = ndlp->rport != NULL;
226 rdata->pnode = NULL;
227 ndlp->rport = NULL;
228 if (put_node)
229 lpfc_nlp_put(ndlp);
230 if (put_rport)
231 put_device(&rport->dev);
232 return;
233 }
234
235 if (ndlp->nlp_sid != NLP_NO_SID) {
236 warn_on = 1;
237 /* flush the target */
238 lpfc_sli_abort_iocb(vport, &phba->sli.ring[phba->sli.fcp_ring],
239 ndlp->nlp_sid, 0, LPFC_CTX_TGT);
240 }
241
242 if (warn_on) {
243 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
244 "0203 Devloss timeout on "
245 "WWPN %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x "
246 "NPort x%06x Data: x%x x%x x%x\n",
247 *name, *(name+1), *(name+2), *(name+3),
248 *(name+4), *(name+5), *(name+6), *(name+7),
249 ndlp->nlp_DID, ndlp->nlp_flag,
250 ndlp->nlp_state, ndlp->nlp_rpi);
251 } else {
252 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
253 "0204 Devloss timeout on "
254 "WWPN %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x "
255 "NPort x%06x Data: x%x x%x x%x\n",
256 *name, *(name+1), *(name+2), *(name+3),
257 *(name+4), *(name+5), *(name+6), *(name+7),
258 ndlp->nlp_DID, ndlp->nlp_flag,
259 ndlp->nlp_state, ndlp->nlp_rpi);
260 }
261
262 put_node = rdata->pnode != NULL;
263 put_rport = ndlp->rport != NULL;
264 rdata->pnode = NULL;
265 ndlp->rport = NULL;
266 if (put_node)
267 lpfc_nlp_put(ndlp);
268 if (put_rport)
269 put_device(&rport->dev);
270
271 if (!(vport->load_flag & FC_UNLOADING) &&
272 !(ndlp->nlp_flag & NLP_DELAY_TMO) &&
273 !(ndlp->nlp_flag & NLP_NPR_2B_DISC) &&
274 (ndlp->nlp_state != NLP_STE_UNMAPPED_NODE))
275 lpfc_disc_state_machine(vport, ndlp, NULL, NLP_EVT_DEVICE_RM);
276 }
277
278 /**
279 * lpfc_alloc_fast_evt: Allocates data structure for posting event.
280 * @phba: Pointer to hba context object.
281 *
282 * This function is called from the functions which need to post
283 * events from interrupt context. This function allocates data
284 * structure required for posting event. It also keeps track of
285 * number of events pending and prevent event storm when there are
286 * too many events.
287 **/
288 struct lpfc_fast_path_event *
289 lpfc_alloc_fast_evt(struct lpfc_hba *phba) {
290 struct lpfc_fast_path_event *ret;
291
292 /* If there are lot of fast event do not exhaust memory due to this */
293 if (atomic_read(&phba->fast_event_count) > LPFC_MAX_EVT_COUNT)
294 return NULL;
295
296 ret = kzalloc(sizeof(struct lpfc_fast_path_event),
297 GFP_ATOMIC);
298 if (ret)
299 atomic_inc(&phba->fast_event_count);
300 INIT_LIST_HEAD(&ret->work_evt.evt_listp);
301 ret->work_evt.evt = LPFC_EVT_FASTPATH_MGMT_EVT;
302 return ret;
303 }
304
305 /**
306 * lpfc_free_fast_evt: Frees event data structure.
307 * @phba: Pointer to hba context object.
308 * @evt: Event object which need to be freed.
309 *
310 * This function frees the data structure required for posting
311 * events.
312 **/
313 void
314 lpfc_free_fast_evt(struct lpfc_hba *phba,
315 struct lpfc_fast_path_event *evt) {
316
317 atomic_dec(&phba->fast_event_count);
318 kfree(evt);
319 }
320
321 /**
322 * lpfc_send_fastpath_evt: Posts events generated from fast path.
323 * @phba: Pointer to hba context object.
324 * @evtp: Event data structure.
325 *
326 * This function is called from worker thread, when the interrupt
327 * context need to post an event. This function posts the event
328 * to fc transport netlink interface.
329 **/
330 static void
331 lpfc_send_fastpath_evt(struct lpfc_hba *phba,
332 struct lpfc_work_evt *evtp)
333 {
334 unsigned long evt_category, evt_sub_category;
335 struct lpfc_fast_path_event *fast_evt_data;
336 char *evt_data;
337 uint32_t evt_data_size;
338 struct Scsi_Host *shost;
339
340 fast_evt_data = container_of(evtp, struct lpfc_fast_path_event,
341 work_evt);
342
343 evt_category = (unsigned long) fast_evt_data->un.fabric_evt.event_type;
344 evt_sub_category = (unsigned long) fast_evt_data->un.
345 fabric_evt.subcategory;
346 shost = lpfc_shost_from_vport(fast_evt_data->vport);
347 if (evt_category == FC_REG_FABRIC_EVENT) {
348 if (evt_sub_category == LPFC_EVENT_FCPRDCHKERR) {
349 evt_data = (char *) &fast_evt_data->un.read_check_error;
350 evt_data_size = sizeof(fast_evt_data->un.
351 read_check_error);
352 } else if ((evt_sub_category == LPFC_EVENT_FABRIC_BUSY) ||
353 (evt_sub_category == IOSTAT_NPORT_BSY)) {
354 evt_data = (char *) &fast_evt_data->un.fabric_evt;
355 evt_data_size = sizeof(fast_evt_data->un.fabric_evt);
356 } else {
357 lpfc_free_fast_evt(phba, fast_evt_data);
358 return;
359 }
360 } else if (evt_category == FC_REG_SCSI_EVENT) {
361 switch (evt_sub_category) {
362 case LPFC_EVENT_QFULL:
363 case LPFC_EVENT_DEVBSY:
364 evt_data = (char *) &fast_evt_data->un.scsi_evt;
365 evt_data_size = sizeof(fast_evt_data->un.scsi_evt);
366 break;
367 case LPFC_EVENT_CHECK_COND:
368 evt_data = (char *) &fast_evt_data->un.check_cond_evt;
369 evt_data_size = sizeof(fast_evt_data->un.
370 check_cond_evt);
371 break;
372 case LPFC_EVENT_VARQUEDEPTH:
373 evt_data = (char *) &fast_evt_data->un.queue_depth_evt;
374 evt_data_size = sizeof(fast_evt_data->un.
375 queue_depth_evt);
376 break;
377 default:
378 lpfc_free_fast_evt(phba, fast_evt_data);
379 return;
380 }
381 } else {
382 lpfc_free_fast_evt(phba, fast_evt_data);
383 return;
384 }
385
386 fc_host_post_vendor_event(shost,
387 fc_get_event_number(),
388 evt_data_size,
389 evt_data,
390 SCSI_NL_VID_TYPE_PCI | PCI_VENDOR_ID_EMULEX);
391
392 lpfc_free_fast_evt(phba, fast_evt_data);
393 return;
394 }
395
396 static void
397 lpfc_work_list_done(struct lpfc_hba *phba)
398 {
399 struct lpfc_work_evt *evtp = NULL;
400 struct lpfc_nodelist *ndlp;
401 int free_evt;
402
403 spin_lock_irq(&phba->hbalock);
404 while (!list_empty(&phba->work_list)) {
405 list_remove_head((&phba->work_list), evtp, typeof(*evtp),
406 evt_listp);
407 spin_unlock_irq(&phba->hbalock);
408 free_evt = 1;
409 switch (evtp->evt) {
410 case LPFC_EVT_ELS_RETRY:
411 ndlp = (struct lpfc_nodelist *) (evtp->evt_arg1);
412 lpfc_els_retry_delay_handler(ndlp);
413 free_evt = 0; /* evt is part of ndlp */
414 /* decrement the node reference count held
415 * for this queued work
416 */
417 lpfc_nlp_put(ndlp);
418 break;
419 case LPFC_EVT_DEV_LOSS:
420 ndlp = (struct lpfc_nodelist *)(evtp->evt_arg1);
421 lpfc_dev_loss_tmo_handler(ndlp);
422 free_evt = 0;
423 /* decrement the node reference count held for
424 * this queued work
425 */
426 lpfc_nlp_put(ndlp);
427 break;
428 case LPFC_EVT_ONLINE:
429 if (phba->link_state < LPFC_LINK_DOWN)
430 *(int *) (evtp->evt_arg1) = lpfc_online(phba);
431 else
432 *(int *) (evtp->evt_arg1) = 0;
433 complete((struct completion *)(evtp->evt_arg2));
434 break;
435 case LPFC_EVT_OFFLINE_PREP:
436 if (phba->link_state >= LPFC_LINK_DOWN)
437 lpfc_offline_prep(phba);
438 *(int *)(evtp->evt_arg1) = 0;
439 complete((struct completion *)(evtp->evt_arg2));
440 break;
441 case LPFC_EVT_OFFLINE:
442 lpfc_offline(phba);
443 lpfc_sli_brdrestart(phba);
444 *(int *)(evtp->evt_arg1) =
445 lpfc_sli_brdready(phba, HS_FFRDY | HS_MBRDY);
446 lpfc_unblock_mgmt_io(phba);
447 complete((struct completion *)(evtp->evt_arg2));
448 break;
449 case LPFC_EVT_WARM_START:
450 lpfc_offline(phba);
451 lpfc_reset_barrier(phba);
452 lpfc_sli_brdreset(phba);
453 lpfc_hba_down_post(phba);
454 *(int *)(evtp->evt_arg1) =
455 lpfc_sli_brdready(phba, HS_MBRDY);
456 lpfc_unblock_mgmt_io(phba);
457 complete((struct completion *)(evtp->evt_arg2));
458 break;
459 case LPFC_EVT_KILL:
460 lpfc_offline(phba);
461 *(int *)(evtp->evt_arg1)
462 = (phba->pport->stopped)
463 ? 0 : lpfc_sli_brdkill(phba);
464 lpfc_unblock_mgmt_io(phba);
465 complete((struct completion *)(evtp->evt_arg2));
466 break;
467 case LPFC_EVT_FASTPATH_MGMT_EVT:
468 lpfc_send_fastpath_evt(phba, evtp);
469 free_evt = 0;
470 break;
471 }
472 if (free_evt)
473 kfree(evtp);
474 spin_lock_irq(&phba->hbalock);
475 }
476 spin_unlock_irq(&phba->hbalock);
477
478 }
479
480 static void
481 lpfc_work_done(struct lpfc_hba *phba)
482 {
483 struct lpfc_sli_ring *pring;
484 uint32_t ha_copy, status, control, work_port_events;
485 struct lpfc_vport **vports;
486 struct lpfc_vport *vport;
487 int i;
488
489 spin_lock_irq(&phba->hbalock);
490 ha_copy = phba->work_ha;
491 phba->work_ha = 0;
492 spin_unlock_irq(&phba->hbalock);
493
494 if (ha_copy & HA_ERATT)
495 /* Handle the error attention event */
496 lpfc_handle_eratt(phba);
497
498 if (ha_copy & HA_MBATT)
499 lpfc_sli_handle_mb_event(phba);
500
501 if (ha_copy & HA_LATT)
502 lpfc_handle_latt(phba);
503
504 vports = lpfc_create_vport_work_array(phba);
505 if (vports != NULL)
506 for(i = 0; i <= phba->max_vpi; i++) {
507 /*
508 * We could have no vports in array if unloading, so if
509 * this happens then just use the pport
510 */
511 if (vports[i] == NULL && i == 0)
512 vport = phba->pport;
513 else
514 vport = vports[i];
515 if (vport == NULL)
516 break;
517 spin_lock_irq(&vport->work_port_lock);
518 work_port_events = vport->work_port_events;
519 vport->work_port_events &= ~work_port_events;
520 spin_unlock_irq(&vport->work_port_lock);
521 if (work_port_events & WORKER_DISC_TMO)
522 lpfc_disc_timeout_handler(vport);
523 if (work_port_events & WORKER_ELS_TMO)
524 lpfc_els_timeout_handler(vport);
525 if (work_port_events & WORKER_HB_TMO)
526 lpfc_hb_timeout_handler(phba);
527 if (work_port_events & WORKER_MBOX_TMO)
528 lpfc_mbox_timeout_handler(phba);
529 if (work_port_events & WORKER_FABRIC_BLOCK_TMO)
530 lpfc_unblock_fabric_iocbs(phba);
531 if (work_port_events & WORKER_FDMI_TMO)
532 lpfc_fdmi_timeout_handler(vport);
533 if (work_port_events & WORKER_RAMP_DOWN_QUEUE)
534 lpfc_ramp_down_queue_handler(phba);
535 if (work_port_events & WORKER_RAMP_UP_QUEUE)
536 lpfc_ramp_up_queue_handler(phba);
537 }
538 lpfc_destroy_vport_work_array(phba, vports);
539
540 pring = &phba->sli.ring[LPFC_ELS_RING];
541 status = (ha_copy & (HA_RXMASK << (4*LPFC_ELS_RING)));
542 status >>= (4*LPFC_ELS_RING);
543 if ((status & HA_RXMASK)
544 || (pring->flag & LPFC_DEFERRED_RING_EVENT)) {
545 if (pring->flag & LPFC_STOP_IOCB_EVENT) {
546 pring->flag |= LPFC_DEFERRED_RING_EVENT;
547 /* Set the lpfc data pending flag */
548 set_bit(LPFC_DATA_READY, &phba->data_flags);
549 } else {
550 pring->flag &= ~LPFC_DEFERRED_RING_EVENT;
551 lpfc_sli_handle_slow_ring_event(phba, pring,
552 (status &
553 HA_RXMASK));
554 }
555 /*
556 * Turn on Ring interrupts
557 */
558 spin_lock_irq(&phba->hbalock);
559 control = readl(phba->HCregaddr);
560 if (!(control & (HC_R0INT_ENA << LPFC_ELS_RING))) {
561 lpfc_debugfs_slow_ring_trc(phba,
562 "WRK Enable ring: cntl:x%x hacopy:x%x",
563 control, ha_copy, 0);
564
565 control |= (HC_R0INT_ENA << LPFC_ELS_RING);
566 writel(control, phba->HCregaddr);
567 readl(phba->HCregaddr); /* flush */
568 }
569 else {
570 lpfc_debugfs_slow_ring_trc(phba,
571 "WRK Ring ok: cntl:x%x hacopy:x%x",
572 control, ha_copy, 0);
573 }
574 spin_unlock_irq(&phba->hbalock);
575 }
576 lpfc_work_list_done(phba);
577 }
578
579 int
580 lpfc_do_work(void *p)
581 {
582 struct lpfc_hba *phba = p;
583 int rc;
584
585 set_user_nice(current, -20);
586 phba->data_flags = 0;
587
588 while (1) {
589 /* wait and check worker queue activities */
590 rc = wait_event_interruptible(phba->work_waitq,
591 (test_and_clear_bit(LPFC_DATA_READY,
592 &phba->data_flags)
593 || kthread_should_stop()));
594 BUG_ON(rc);
595
596 if (kthread_should_stop())
597 break;
598
599 /* Attend pending lpfc data processing */
600 lpfc_work_done(phba);
601 }
602 return 0;
603 }
604
605 /*
606 * This is only called to handle FC worker events. Since this a rare
607 * occurance, we allocate a struct lpfc_work_evt structure here instead of
608 * embedding it in the IOCB.
609 */
610 int
611 lpfc_workq_post_event(struct lpfc_hba *phba, void *arg1, void *arg2,
612 uint32_t evt)
613 {
614 struct lpfc_work_evt *evtp;
615 unsigned long flags;
616
617 /*
618 * All Mailbox completions and LPFC_ELS_RING rcv ring IOCB events will
619 * be queued to worker thread for processing
620 */
621 evtp = kmalloc(sizeof(struct lpfc_work_evt), GFP_ATOMIC);
622 if (!evtp)
623 return 0;
624
625 evtp->evt_arg1 = arg1;
626 evtp->evt_arg2 = arg2;
627 evtp->evt = evt;
628
629 spin_lock_irqsave(&phba->hbalock, flags);
630 list_add_tail(&evtp->evt_listp, &phba->work_list);
631 spin_unlock_irqrestore(&phba->hbalock, flags);
632
633 lpfc_worker_wake_up(phba);
634
635 return 1;
636 }
637
638 void
639 lpfc_cleanup_rpis(struct lpfc_vport *vport, int remove)
640 {
641 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
642 struct lpfc_hba *phba = vport->phba;
643 struct lpfc_nodelist *ndlp, *next_ndlp;
644 int rc;
645
646 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) {
647 if (!NLP_CHK_NODE_ACT(ndlp))
648 continue;
649 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
650 continue;
651 if ((phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN) ||
652 ((vport->port_type == LPFC_NPIV_PORT) &&
653 (ndlp->nlp_DID == NameServer_DID)))
654 lpfc_unreg_rpi(vport, ndlp);
655
656 /* Leave Fabric nodes alone on link down */
657 if (!remove && ndlp->nlp_type & NLP_FABRIC)
658 continue;
659 rc = lpfc_disc_state_machine(vport, ndlp, NULL,
660 remove
661 ? NLP_EVT_DEVICE_RM
662 : NLP_EVT_DEVICE_RECOVERY);
663 }
664 if (phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN) {
665 lpfc_mbx_unreg_vpi(vport);
666 spin_lock_irq(shost->host_lock);
667 vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
668 spin_unlock_irq(shost->host_lock);
669 }
670 }
671
672 void
673 lpfc_port_link_failure(struct lpfc_vport *vport)
674 {
675 /* Cleanup any outstanding RSCN activity */
676 lpfc_els_flush_rscn(vport);
677
678 /* Cleanup any outstanding ELS commands */
679 lpfc_els_flush_cmd(vport);
680
681 lpfc_cleanup_rpis(vport, 0);
682
683 /* Turn off discovery timer if its running */
684 lpfc_can_disctmo(vport);
685 }
686
687 static void
688 lpfc_linkdown_port(struct lpfc_vport *vport)
689 {
690 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
691
692 fc_host_post_event(shost, fc_get_event_number(), FCH_EVT_LINKDOWN, 0);
693
694 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
695 "Link Down: state:x%x rtry:x%x flg:x%x",
696 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
697
698 lpfc_port_link_failure(vport);
699
700 }
701
702 int
703 lpfc_linkdown(struct lpfc_hba *phba)
704 {
705 struct lpfc_vport *vport = phba->pport;
706 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
707 struct lpfc_vport **vports;
708 LPFC_MBOXQ_t *mb;
709 int i;
710
711 if (phba->link_state == LPFC_LINK_DOWN)
712 return 0;
713 spin_lock_irq(&phba->hbalock);
714 if (phba->link_state > LPFC_LINK_DOWN) {
715 phba->link_state = LPFC_LINK_DOWN;
716 phba->pport->fc_flag &= ~FC_LBIT;
717 }
718 spin_unlock_irq(&phba->hbalock);
719 vports = lpfc_create_vport_work_array(phba);
720 if (vports != NULL)
721 for(i = 0; i <= phba->max_vpi && vports[i] != NULL; i++) {
722 /* Issue a LINK DOWN event to all nodes */
723 lpfc_linkdown_port(vports[i]);
724 }
725 lpfc_destroy_vport_work_array(phba, vports);
726 /* Clean up any firmware default rpi's */
727 mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
728 if (mb) {
729 lpfc_unreg_did(phba, 0xffff, 0xffffffff, mb);
730 mb->vport = vport;
731 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
732 if (lpfc_sli_issue_mbox(phba, mb, MBX_NOWAIT)
733 == MBX_NOT_FINISHED) {
734 mempool_free(mb, phba->mbox_mem_pool);
735 }
736 }
737
738 /* Setup myDID for link up if we are in pt2pt mode */
739 if (phba->pport->fc_flag & FC_PT2PT) {
740 phba->pport->fc_myDID = 0;
741 mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
742 if (mb) {
743 lpfc_config_link(phba, mb);
744 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
745 mb->vport = vport;
746 if (lpfc_sli_issue_mbox(phba, mb, MBX_NOWAIT)
747 == MBX_NOT_FINISHED) {
748 mempool_free(mb, phba->mbox_mem_pool);
749 }
750 }
751 spin_lock_irq(shost->host_lock);
752 phba->pport->fc_flag &= ~(FC_PT2PT | FC_PT2PT_PLOGI);
753 spin_unlock_irq(shost->host_lock);
754 }
755
756 return 0;
757 }
758
759 static void
760 lpfc_linkup_cleanup_nodes(struct lpfc_vport *vport)
761 {
762 struct lpfc_nodelist *ndlp;
763
764 list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
765 if (!NLP_CHK_NODE_ACT(ndlp))
766 continue;
767 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
768 continue;
769 if (ndlp->nlp_type & NLP_FABRIC) {
770 /* On Linkup its safe to clean up the ndlp
771 * from Fabric connections.
772 */
773 if (ndlp->nlp_DID != Fabric_DID)
774 lpfc_unreg_rpi(vport, ndlp);
775 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
776 } else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) {
777 /* Fail outstanding IO now since device is
778 * marked for PLOGI.
779 */
780 lpfc_unreg_rpi(vport, ndlp);
781 }
782 }
783 }
784
785 static void
786 lpfc_linkup_port(struct lpfc_vport *vport)
787 {
788 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
789 struct lpfc_hba *phba = vport->phba;
790
791 if ((vport->load_flag & FC_UNLOADING) != 0)
792 return;
793
794 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
795 "Link Up: top:x%x speed:x%x flg:x%x",
796 phba->fc_topology, phba->fc_linkspeed, phba->link_flag);
797
798 /* If NPIV is not enabled, only bring the physical port up */
799 if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
800 (vport != phba->pport))
801 return;
802
803 fc_host_post_event(shost, fc_get_event_number(), FCH_EVT_LINKUP, 0);
804
805 spin_lock_irq(shost->host_lock);
806 vport->fc_flag &= ~(FC_PT2PT | FC_PT2PT_PLOGI | FC_ABORT_DISCOVERY |
807 FC_RSCN_MODE | FC_NLP_MORE | FC_RSCN_DISCOVERY);
808 vport->fc_flag |= FC_NDISC_ACTIVE;
809 vport->fc_ns_retry = 0;
810 spin_unlock_irq(shost->host_lock);
811
812 if (vport->fc_flag & FC_LBIT)
813 lpfc_linkup_cleanup_nodes(vport);
814
815 }
816
817 static int
818 lpfc_linkup(struct lpfc_hba *phba)
819 {
820 struct lpfc_vport **vports;
821 int i;
822
823 phba->link_state = LPFC_LINK_UP;
824
825 /* Unblock fabric iocbs if they are blocked */
826 clear_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags);
827 del_timer_sync(&phba->fabric_block_timer);
828
829 vports = lpfc_create_vport_work_array(phba);
830 if (vports != NULL)
831 for(i = 0; i <= phba->max_vpi && vports[i] != NULL; i++)
832 lpfc_linkup_port(vports[i]);
833 lpfc_destroy_vport_work_array(phba, vports);
834 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
835 lpfc_issue_clear_la(phba, phba->pport);
836
837 return 0;
838 }
839
840 /*
841 * This routine handles processing a CLEAR_LA mailbox
842 * command upon completion. It is setup in the LPFC_MBOXQ
843 * as the completion routine when the command is
844 * handed off to the SLI layer.
845 */
846 static void
847 lpfc_mbx_cmpl_clear_la(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
848 {
849 struct lpfc_vport *vport = pmb->vport;
850 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
851 struct lpfc_sli *psli = &phba->sli;
852 MAILBOX_t *mb = &pmb->mb;
853 uint32_t control;
854
855 /* Since we don't do discovery right now, turn these off here */
856 psli->ring[psli->extra_ring].flag &= ~LPFC_STOP_IOCB_EVENT;
857 psli->ring[psli->fcp_ring].flag &= ~LPFC_STOP_IOCB_EVENT;
858 psli->ring[psli->next_ring].flag &= ~LPFC_STOP_IOCB_EVENT;
859
860 /* Check for error */
861 if ((mb->mbxStatus) && (mb->mbxStatus != 0x1601)) {
862 /* CLEAR_LA mbox error <mbxStatus> state <hba_state> */
863 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
864 "0320 CLEAR_LA mbxStatus error x%x hba "
865 "state x%x\n",
866 mb->mbxStatus, vport->port_state);
867 phba->link_state = LPFC_HBA_ERROR;
868 goto out;
869 }
870
871 if (vport->port_type == LPFC_PHYSICAL_PORT)
872 phba->link_state = LPFC_HBA_READY;
873
874 spin_lock_irq(&phba->hbalock);
875 psli->sli_flag |= LPFC_PROCESS_LA;
876 control = readl(phba->HCregaddr);
877 control |= HC_LAINT_ENA;
878 writel(control, phba->HCregaddr);
879 readl(phba->HCregaddr); /* flush */
880 spin_unlock_irq(&phba->hbalock);
881 mempool_free(pmb, phba->mbox_mem_pool);
882 return;
883
884 out:
885 /* Device Discovery completes */
886 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
887 "0225 Device Discovery completes\n");
888 mempool_free(pmb, phba->mbox_mem_pool);
889
890 spin_lock_irq(shost->host_lock);
891 vport->fc_flag &= ~FC_ABORT_DISCOVERY;
892 spin_unlock_irq(shost->host_lock);
893
894 lpfc_can_disctmo(vport);
895
896 /* turn on Link Attention interrupts */
897
898 spin_lock_irq(&phba->hbalock);
899 psli->sli_flag |= LPFC_PROCESS_LA;
900 control = readl(phba->HCregaddr);
901 control |= HC_LAINT_ENA;
902 writel(control, phba->HCregaddr);
903 readl(phba->HCregaddr); /* flush */
904 spin_unlock_irq(&phba->hbalock);
905
906 return;
907 }
908
909
910 static void
911 lpfc_mbx_cmpl_local_config_link(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
912 {
913 struct lpfc_vport *vport = pmb->vport;
914
915 if (pmb->mb.mbxStatus)
916 goto out;
917
918 mempool_free(pmb, phba->mbox_mem_pool);
919
920 if (phba->fc_topology == TOPOLOGY_LOOP &&
921 vport->fc_flag & FC_PUBLIC_LOOP &&
922 !(vport->fc_flag & FC_LBIT)) {
923 /* Need to wait for FAN - use discovery timer
924 * for timeout. port_state is identically
925 * LPFC_LOCAL_CFG_LINK while waiting for FAN
926 */
927 lpfc_set_disctmo(vport);
928 return;
929 }
930
931 /* Start discovery by sending a FLOGI. port_state is identically
932 * LPFC_FLOGI while waiting for FLOGI cmpl
933 */
934 if (vport->port_state != LPFC_FLOGI) {
935 lpfc_initial_flogi(vport);
936 }
937 return;
938
939 out:
940 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
941 "0306 CONFIG_LINK mbxStatus error x%x "
942 "HBA state x%x\n",
943 pmb->mb.mbxStatus, vport->port_state);
944 mempool_free(pmb, phba->mbox_mem_pool);
945
946 lpfc_linkdown(phba);
947
948 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
949 "0200 CONFIG_LINK bad hba state x%x\n",
950 vport->port_state);
951
952 lpfc_issue_clear_la(phba, vport);
953 return;
954 }
955
956 static void
957 lpfc_mbx_cmpl_read_sparam(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
958 {
959 MAILBOX_t *mb = &pmb->mb;
960 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) pmb->context1;
961 struct lpfc_vport *vport = pmb->vport;
962
963
964 /* Check for error */
965 if (mb->mbxStatus) {
966 /* READ_SPARAM mbox error <mbxStatus> state <hba_state> */
967 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
968 "0319 READ_SPARAM mbxStatus error x%x "
969 "hba state x%x>\n",
970 mb->mbxStatus, vport->port_state);
971 lpfc_linkdown(phba);
972 goto out;
973 }
974
975 memcpy((uint8_t *) &vport->fc_sparam, (uint8_t *) mp->virt,
976 sizeof (struct serv_parm));
977 if (phba->cfg_soft_wwnn)
978 u64_to_wwn(phba->cfg_soft_wwnn,
979 vport->fc_sparam.nodeName.u.wwn);
980 if (phba->cfg_soft_wwpn)
981 u64_to_wwn(phba->cfg_soft_wwpn,
982 vport->fc_sparam.portName.u.wwn);
983 memcpy(&vport->fc_nodename, &vport->fc_sparam.nodeName,
984 sizeof(vport->fc_nodename));
985 memcpy(&vport->fc_portname, &vport->fc_sparam.portName,
986 sizeof(vport->fc_portname));
987 if (vport->port_type == LPFC_PHYSICAL_PORT) {
988 memcpy(&phba->wwnn, &vport->fc_nodename, sizeof(phba->wwnn));
989 memcpy(&phba->wwpn, &vport->fc_portname, sizeof(phba->wwnn));
990 }
991
992 lpfc_mbuf_free(phba, mp->virt, mp->phys);
993 kfree(mp);
994 mempool_free(pmb, phba->mbox_mem_pool);
995 return;
996
997 out:
998 pmb->context1 = NULL;
999 lpfc_mbuf_free(phba, mp->virt, mp->phys);
1000 kfree(mp);
1001 lpfc_issue_clear_la(phba, vport);
1002 mempool_free(pmb, phba->mbox_mem_pool);
1003 return;
1004 }
1005
1006 static void
1007 lpfc_mbx_process_link_up(struct lpfc_hba *phba, READ_LA_VAR *la)
1008 {
1009 struct lpfc_vport *vport = phba->pport;
1010 LPFC_MBOXQ_t *sparam_mbox, *cfglink_mbox;
1011 int i;
1012 struct lpfc_dmabuf *mp;
1013 int rc;
1014
1015 sparam_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1016 cfglink_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1017
1018 spin_lock_irq(&phba->hbalock);
1019 switch (la->UlnkSpeed) {
1020 case LA_1GHZ_LINK:
1021 phba->fc_linkspeed = LA_1GHZ_LINK;
1022 break;
1023 case LA_2GHZ_LINK:
1024 phba->fc_linkspeed = LA_2GHZ_LINK;
1025 break;
1026 case LA_4GHZ_LINK:
1027 phba->fc_linkspeed = LA_4GHZ_LINK;
1028 break;
1029 case LA_8GHZ_LINK:
1030 phba->fc_linkspeed = LA_8GHZ_LINK;
1031 break;
1032 default:
1033 phba->fc_linkspeed = LA_UNKNW_LINK;
1034 break;
1035 }
1036
1037 phba->fc_topology = la->topology;
1038 phba->link_flag &= ~LS_NPIV_FAB_SUPPORTED;
1039
1040 if (phba->fc_topology == TOPOLOGY_LOOP) {
1041 phba->sli3_options &= ~LPFC_SLI3_NPIV_ENABLED;
1042
1043 if (phba->cfg_enable_npiv)
1044 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
1045 "1309 Link Up Event npiv not supported in loop "
1046 "topology\n");
1047 /* Get Loop Map information */
1048 if (la->il)
1049 vport->fc_flag |= FC_LBIT;
1050
1051 vport->fc_myDID = la->granted_AL_PA;
1052 i = la->un.lilpBde64.tus.f.bdeSize;
1053
1054 if (i == 0) {
1055 phba->alpa_map[0] = 0;
1056 } else {
1057 if (vport->cfg_log_verbose & LOG_LINK_EVENT) {
1058 int numalpa, j, k;
1059 union {
1060 uint8_t pamap[16];
1061 struct {
1062 uint32_t wd1;
1063 uint32_t wd2;
1064 uint32_t wd3;
1065 uint32_t wd4;
1066 } pa;
1067 } un;
1068 numalpa = phba->alpa_map[0];
1069 j = 0;
1070 while (j < numalpa) {
1071 memset(un.pamap, 0, 16);
1072 for (k = 1; j < numalpa; k++) {
1073 un.pamap[k - 1] =
1074 phba->alpa_map[j + 1];
1075 j++;
1076 if (k == 16)
1077 break;
1078 }
1079 /* Link Up Event ALPA map */
1080 lpfc_printf_log(phba,
1081 KERN_WARNING,
1082 LOG_LINK_EVENT,
1083 "1304 Link Up Event "
1084 "ALPA map Data: x%x "
1085 "x%x x%x x%x\n",
1086 un.pa.wd1, un.pa.wd2,
1087 un.pa.wd3, un.pa.wd4);
1088 }
1089 }
1090 }
1091 } else {
1092 if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)) {
1093 if (phba->max_vpi && phba->cfg_enable_npiv &&
1094 (phba->sli_rev == 3))
1095 phba->sli3_options |= LPFC_SLI3_NPIV_ENABLED;
1096 }
1097 vport->fc_myDID = phba->fc_pref_DID;
1098 vport->fc_flag |= FC_LBIT;
1099 }
1100 spin_unlock_irq(&phba->hbalock);
1101
1102 lpfc_linkup(phba);
1103 if (sparam_mbox) {
1104 lpfc_read_sparam(phba, sparam_mbox, 0);
1105 sparam_mbox->vport = vport;
1106 sparam_mbox->mbox_cmpl = lpfc_mbx_cmpl_read_sparam;
1107 rc = lpfc_sli_issue_mbox(phba, sparam_mbox, MBX_NOWAIT);
1108 if (rc == MBX_NOT_FINISHED) {
1109 mp = (struct lpfc_dmabuf *) sparam_mbox->context1;
1110 lpfc_mbuf_free(phba, mp->virt, mp->phys);
1111 kfree(mp);
1112 mempool_free(sparam_mbox, phba->mbox_mem_pool);
1113 if (cfglink_mbox)
1114 mempool_free(cfglink_mbox, phba->mbox_mem_pool);
1115 goto out;
1116 }
1117 }
1118
1119 if (cfglink_mbox) {
1120 vport->port_state = LPFC_LOCAL_CFG_LINK;
1121 lpfc_config_link(phba, cfglink_mbox);
1122 cfglink_mbox->vport = vport;
1123 cfglink_mbox->mbox_cmpl = lpfc_mbx_cmpl_local_config_link;
1124 rc = lpfc_sli_issue_mbox(phba, cfglink_mbox, MBX_NOWAIT);
1125 if (rc != MBX_NOT_FINISHED)
1126 return;
1127 mempool_free(cfglink_mbox, phba->mbox_mem_pool);
1128 }
1129 out:
1130 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
1131 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
1132 "0263 Discovery Mailbox error: state: 0x%x : %p %p\n",
1133 vport->port_state, sparam_mbox, cfglink_mbox);
1134 lpfc_issue_clear_la(phba, vport);
1135 return;
1136 }
1137
1138 static void
1139 lpfc_enable_la(struct lpfc_hba *phba)
1140 {
1141 uint32_t control;
1142 struct lpfc_sli *psli = &phba->sli;
1143 spin_lock_irq(&phba->hbalock);
1144 psli->sli_flag |= LPFC_PROCESS_LA;
1145 control = readl(phba->HCregaddr);
1146 control |= HC_LAINT_ENA;
1147 writel(control, phba->HCregaddr);
1148 readl(phba->HCregaddr); /* flush */
1149 spin_unlock_irq(&phba->hbalock);
1150 }
1151
1152 static void
1153 lpfc_mbx_issue_link_down(struct lpfc_hba *phba)
1154 {
1155 lpfc_linkdown(phba);
1156 lpfc_enable_la(phba);
1157 /* turn on Link Attention interrupts - no CLEAR_LA needed */
1158 }
1159
1160
1161 /*
1162 * This routine handles processing a READ_LA mailbox
1163 * command upon completion. It is setup in the LPFC_MBOXQ
1164 * as the completion routine when the command is
1165 * handed off to the SLI layer.
1166 */
1167 void
1168 lpfc_mbx_cmpl_read_la(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1169 {
1170 struct lpfc_vport *vport = pmb->vport;
1171 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1172 READ_LA_VAR *la;
1173 MAILBOX_t *mb = &pmb->mb;
1174 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
1175
1176 /* Unblock ELS traffic */
1177 phba->sli.ring[LPFC_ELS_RING].flag &= ~LPFC_STOP_IOCB_EVENT;
1178 /* Check for error */
1179 if (mb->mbxStatus) {
1180 lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT,
1181 "1307 READ_LA mbox error x%x state x%x\n",
1182 mb->mbxStatus, vport->port_state);
1183 lpfc_mbx_issue_link_down(phba);
1184 phba->link_state = LPFC_HBA_ERROR;
1185 goto lpfc_mbx_cmpl_read_la_free_mbuf;
1186 }
1187
1188 la = (READ_LA_VAR *) & pmb->mb.un.varReadLA;
1189
1190 memcpy(&phba->alpa_map[0], mp->virt, 128);
1191
1192 spin_lock_irq(shost->host_lock);
1193 if (la->pb)
1194 vport->fc_flag |= FC_BYPASSED_MODE;
1195 else
1196 vport->fc_flag &= ~FC_BYPASSED_MODE;
1197 spin_unlock_irq(shost->host_lock);
1198
1199 if (((phba->fc_eventTag + 1) < la->eventTag) ||
1200 (phba->fc_eventTag == la->eventTag)) {
1201 phba->fc_stat.LinkMultiEvent++;
1202 if (la->attType == AT_LINK_UP)
1203 if (phba->fc_eventTag != 0)
1204 lpfc_linkdown(phba);
1205 }
1206
1207 phba->fc_eventTag = la->eventTag;
1208 if (la->mm)
1209 phba->sli.sli_flag |= LPFC_MENLO_MAINT;
1210 else
1211 phba->sli.sli_flag &= ~LPFC_MENLO_MAINT;
1212
1213 if (la->attType == AT_LINK_UP && (!la->mm)) {
1214 phba->fc_stat.LinkUp++;
1215 if (phba->link_flag & LS_LOOPBACK_MODE) {
1216 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
1217 "1306 Link Up Event in loop back mode "
1218 "x%x received Data: x%x x%x x%x x%x\n",
1219 la->eventTag, phba->fc_eventTag,
1220 la->granted_AL_PA, la->UlnkSpeed,
1221 phba->alpa_map[0]);
1222 } else {
1223 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
1224 "1303 Link Up Event x%x received "
1225 "Data: x%x x%x x%x x%x x%x x%x %d\n",
1226 la->eventTag, phba->fc_eventTag,
1227 la->granted_AL_PA, la->UlnkSpeed,
1228 phba->alpa_map[0],
1229 la->mm, la->fa,
1230 phba->wait_4_mlo_maint_flg);
1231 }
1232 lpfc_mbx_process_link_up(phba, la);
1233 } else if (la->attType == AT_LINK_DOWN) {
1234 phba->fc_stat.LinkDown++;
1235 if (phba->link_flag & LS_LOOPBACK_MODE) {
1236 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
1237 "1308 Link Down Event in loop back mode "
1238 "x%x received "
1239 "Data: x%x x%x x%x\n",
1240 la->eventTag, phba->fc_eventTag,
1241 phba->pport->port_state, vport->fc_flag);
1242 }
1243 else {
1244 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
1245 "1305 Link Down Event x%x received "
1246 "Data: x%x x%x x%x x%x x%x\n",
1247 la->eventTag, phba->fc_eventTag,
1248 phba->pport->port_state, vport->fc_flag,
1249 la->mm, la->fa);
1250 }
1251 lpfc_mbx_issue_link_down(phba);
1252 }
1253 if (la->mm && la->attType == AT_LINK_UP) {
1254 if (phba->link_state != LPFC_LINK_DOWN) {
1255 phba->fc_stat.LinkDown++;
1256 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
1257 "1312 Link Down Event x%x received "
1258 "Data: x%x x%x x%x\n",
1259 la->eventTag, phba->fc_eventTag,
1260 phba->pport->port_state, vport->fc_flag);
1261 lpfc_mbx_issue_link_down(phba);
1262 } else
1263 lpfc_enable_la(phba);
1264
1265 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
1266 "1310 Menlo Maint Mode Link up Event x%x rcvd "
1267 "Data: x%x x%x x%x\n",
1268 la->eventTag, phba->fc_eventTag,
1269 phba->pport->port_state, vport->fc_flag);
1270 /*
1271 * The cmnd that triggered this will be waiting for this
1272 * signal.
1273 */
1274 /* WAKEUP for MENLO_SET_MODE or MENLO_RESET command. */
1275 if (phba->wait_4_mlo_maint_flg) {
1276 phba->wait_4_mlo_maint_flg = 0;
1277 wake_up_interruptible(&phba->wait_4_mlo_m_q);
1278 }
1279 }
1280
1281 if (la->fa) {
1282 if (la->mm)
1283 lpfc_issue_clear_la(phba, vport);
1284 lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT,
1285 "1311 fa %d\n", la->fa);
1286 }
1287
1288 lpfc_mbx_cmpl_read_la_free_mbuf:
1289 lpfc_mbuf_free(phba, mp->virt, mp->phys);
1290 kfree(mp);
1291 mempool_free(pmb, phba->mbox_mem_pool);
1292 return;
1293 }
1294
1295 /*
1296 * This routine handles processing a REG_LOGIN mailbox
1297 * command upon completion. It is setup in the LPFC_MBOXQ
1298 * as the completion routine when the command is
1299 * handed off to the SLI layer.
1300 */
1301 void
1302 lpfc_mbx_cmpl_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1303 {
1304 struct lpfc_vport *vport = pmb->vport;
1305 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
1306 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2;
1307
1308 pmb->context1 = NULL;
1309
1310 /* Good status, call state machine */
1311 lpfc_disc_state_machine(vport, ndlp, pmb, NLP_EVT_CMPL_REG_LOGIN);
1312 lpfc_mbuf_free(phba, mp->virt, mp->phys);
1313 kfree(mp);
1314 mempool_free(pmb, phba->mbox_mem_pool);
1315 /* decrement the node reference count held for this callback
1316 * function.
1317 */
1318 lpfc_nlp_put(ndlp);
1319
1320 return;
1321 }
1322
1323 static void
1324 lpfc_mbx_cmpl_unreg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1325 {
1326 MAILBOX_t *mb = &pmb->mb;
1327 struct lpfc_vport *vport = pmb->vport;
1328 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1329
1330 switch (mb->mbxStatus) {
1331 case 0x0011:
1332 case 0x0020:
1333 case 0x9700:
1334 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
1335 "0911 cmpl_unreg_vpi, mb status = 0x%x\n",
1336 mb->mbxStatus);
1337 break;
1338 }
1339 vport->unreg_vpi_cmpl = VPORT_OK;
1340 mempool_free(pmb, phba->mbox_mem_pool);
1341 /*
1342 * This shost reference might have been taken at the beginning of
1343 * lpfc_vport_delete()
1344 */
1345 if (vport->load_flag & FC_UNLOADING)
1346 scsi_host_put(shost);
1347 }
1348
1349 int
1350 lpfc_mbx_unreg_vpi(struct lpfc_vport *vport)
1351 {
1352 struct lpfc_hba *phba = vport->phba;
1353 LPFC_MBOXQ_t *mbox;
1354 int rc;
1355
1356 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1357 if (!mbox)
1358 return 1;
1359
1360 lpfc_unreg_vpi(phba, vport->vpi, mbox);
1361 mbox->vport = vport;
1362 mbox->mbox_cmpl = lpfc_mbx_cmpl_unreg_vpi;
1363 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
1364 if (rc == MBX_NOT_FINISHED) {
1365 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX | LOG_VPORT,
1366 "1800 Could not issue unreg_vpi\n");
1367 mempool_free(mbox, phba->mbox_mem_pool);
1368 vport->unreg_vpi_cmpl = VPORT_ERROR;
1369 return rc;
1370 }
1371 return 0;
1372 }
1373
1374 static void
1375 lpfc_mbx_cmpl_reg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1376 {
1377 struct lpfc_vport *vport = pmb->vport;
1378 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1379 MAILBOX_t *mb = &pmb->mb;
1380
1381 switch (mb->mbxStatus) {
1382 case 0x0011:
1383 case 0x9601:
1384 case 0x9602:
1385 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
1386 "0912 cmpl_reg_vpi, mb status = 0x%x\n",
1387 mb->mbxStatus);
1388 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
1389 spin_lock_irq(shost->host_lock);
1390 vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
1391 spin_unlock_irq(shost->host_lock);
1392 vport->fc_myDID = 0;
1393 goto out;
1394 }
1395
1396 vport->num_disc_nodes = 0;
1397 /* go thru NPR list and issue ELS PLOGIs */
1398 if (vport->fc_npr_cnt)
1399 lpfc_els_disc_plogi(vport);
1400
1401 if (!vport->num_disc_nodes) {
1402 spin_lock_irq(shost->host_lock);
1403 vport->fc_flag &= ~FC_NDISC_ACTIVE;
1404 spin_unlock_irq(shost->host_lock);
1405 lpfc_can_disctmo(vport);
1406 }
1407 vport->port_state = LPFC_VPORT_READY;
1408
1409 out:
1410 mempool_free(pmb, phba->mbox_mem_pool);
1411 return;
1412 }
1413
1414 /*
1415 * This routine handles processing a Fabric REG_LOGIN mailbox
1416 * command upon completion. It is setup in the LPFC_MBOXQ
1417 * as the completion routine when the command is
1418 * handed off to the SLI layer.
1419 */
1420 void
1421 lpfc_mbx_cmpl_fabric_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1422 {
1423 struct lpfc_vport *vport = pmb->vport;
1424 MAILBOX_t *mb = &pmb->mb;
1425 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
1426 struct lpfc_nodelist *ndlp;
1427 struct lpfc_vport **vports;
1428 int i;
1429
1430 ndlp = (struct lpfc_nodelist *) pmb->context2;
1431 pmb->context1 = NULL;
1432 pmb->context2 = NULL;
1433 if (mb->mbxStatus) {
1434 lpfc_mbuf_free(phba, mp->virt, mp->phys);
1435 kfree(mp);
1436 mempool_free(pmb, phba->mbox_mem_pool);
1437
1438 if (phba->fc_topology == TOPOLOGY_LOOP) {
1439 /* FLOGI failed, use loop map to make discovery list */
1440 lpfc_disc_list_loopmap(vport);
1441
1442 /* Start discovery */
1443 lpfc_disc_start(vport);
1444 /* Decrement the reference count to ndlp after the
1445 * reference to the ndlp are done.
1446 */
1447 lpfc_nlp_put(ndlp);
1448 return;
1449 }
1450
1451 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
1452 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
1453 "0258 Register Fabric login error: 0x%x\n",
1454 mb->mbxStatus);
1455 /* Decrement the reference count to ndlp after the reference
1456 * to the ndlp are done.
1457 */
1458 lpfc_nlp_put(ndlp);
1459 return;
1460 }
1461
1462 ndlp->nlp_rpi = mb->un.varWords[0];
1463 ndlp->nlp_type |= NLP_FABRIC;
1464 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1465
1466 if (vport->port_state == LPFC_FABRIC_CFG_LINK) {
1467 vports = lpfc_create_vport_work_array(phba);
1468 if (vports != NULL)
1469 for(i = 0;
1470 i <= phba->max_vpi && vports[i] != NULL;
1471 i++) {
1472 if (vports[i]->port_type == LPFC_PHYSICAL_PORT)
1473 continue;
1474 if (phba->fc_topology == TOPOLOGY_LOOP) {
1475 lpfc_vport_set_state(vports[i],
1476 FC_VPORT_LINKDOWN);
1477 continue;
1478 }
1479 if (phba->link_flag & LS_NPIV_FAB_SUPPORTED)
1480 lpfc_initial_fdisc(vports[i]);
1481 else {
1482 lpfc_vport_set_state(vports[i],
1483 FC_VPORT_NO_FABRIC_SUPP);
1484 lpfc_printf_vlog(vport, KERN_ERR,
1485 LOG_ELS,
1486 "0259 No NPIV "
1487 "Fabric support\n");
1488 }
1489 }
1490 lpfc_destroy_vport_work_array(phba, vports);
1491 lpfc_do_scr_ns_plogi(phba, vport);
1492 }
1493
1494 lpfc_mbuf_free(phba, mp->virt, mp->phys);
1495 kfree(mp);
1496 mempool_free(pmb, phba->mbox_mem_pool);
1497
1498 /* Drop the reference count from the mbox at the end after
1499 * all the current reference to the ndlp have been done.
1500 */
1501 lpfc_nlp_put(ndlp);
1502 return;
1503 }
1504
1505 /*
1506 * This routine handles processing a NameServer REG_LOGIN mailbox
1507 * command upon completion. It is setup in the LPFC_MBOXQ
1508 * as the completion routine when the command is
1509 * handed off to the SLI layer.
1510 */
1511 void
1512 lpfc_mbx_cmpl_ns_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1513 {
1514 MAILBOX_t *mb = &pmb->mb;
1515 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
1516 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2;
1517 struct lpfc_vport *vport = pmb->vport;
1518
1519 if (mb->mbxStatus) {
1520 out:
1521 /* decrement the node reference count held for this
1522 * callback function.
1523 */
1524 lpfc_nlp_put(ndlp);
1525 lpfc_mbuf_free(phba, mp->virt, mp->phys);
1526 kfree(mp);
1527 mempool_free(pmb, phba->mbox_mem_pool);
1528
1529 /* If no other thread is using the ndlp, free it */
1530 lpfc_nlp_not_used(ndlp);
1531
1532 if (phba->fc_topology == TOPOLOGY_LOOP) {
1533 /*
1534 * RegLogin failed, use loop map to make discovery
1535 * list
1536 */
1537 lpfc_disc_list_loopmap(vport);
1538
1539 /* Start discovery */
1540 lpfc_disc_start(vport);
1541 return;
1542 }
1543 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
1544 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1545 "0260 Register NameServer error: 0x%x\n",
1546 mb->mbxStatus);
1547 return;
1548 }
1549
1550 pmb->context1 = NULL;
1551
1552 ndlp->nlp_rpi = mb->un.varWords[0];
1553 ndlp->nlp_type |= NLP_FABRIC;
1554 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1555
1556 if (vport->port_state < LPFC_VPORT_READY) {
1557 /* Link up discovery requires Fabric registration. */
1558 lpfc_ns_cmd(vport, SLI_CTNS_RFF_ID, 0, 0); /* Do this first! */
1559 lpfc_ns_cmd(vport, SLI_CTNS_RNN_ID, 0, 0);
1560 lpfc_ns_cmd(vport, SLI_CTNS_RSNN_NN, 0, 0);
1561 lpfc_ns_cmd(vport, SLI_CTNS_RSPN_ID, 0, 0);
1562 lpfc_ns_cmd(vport, SLI_CTNS_RFT_ID, 0, 0);
1563
1564 /* Issue SCR just before NameServer GID_FT Query */
1565 lpfc_issue_els_scr(vport, SCR_DID, 0);
1566 }
1567
1568 vport->fc_ns_retry = 0;
1569 /* Good status, issue CT Request to NameServer */
1570 if (lpfc_ns_cmd(vport, SLI_CTNS_GID_FT, 0, 0)) {
1571 /* Cannot issue NameServer Query, so finish up discovery */
1572 goto out;
1573 }
1574
1575 /* decrement the node reference count held for this
1576 * callback function.
1577 */
1578 lpfc_nlp_put(ndlp);
1579 lpfc_mbuf_free(phba, mp->virt, mp->phys);
1580 kfree(mp);
1581 mempool_free(pmb, phba->mbox_mem_pool);
1582
1583 return;
1584 }
1585
1586 static void
1587 lpfc_register_remote_port(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
1588 {
1589 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1590 struct fc_rport *rport;
1591 struct lpfc_rport_data *rdata;
1592 struct fc_rport_identifiers rport_ids;
1593 struct lpfc_hba *phba = vport->phba;
1594
1595 /* Remote port has reappeared. Re-register w/ FC transport */
1596 rport_ids.node_name = wwn_to_u64(ndlp->nlp_nodename.u.wwn);
1597 rport_ids.port_name = wwn_to_u64(ndlp->nlp_portname.u.wwn);
1598 rport_ids.port_id = ndlp->nlp_DID;
1599 rport_ids.roles = FC_RPORT_ROLE_UNKNOWN;
1600
1601 /*
1602 * We leave our node pointer in rport->dd_data when we unregister a
1603 * FCP target port. But fc_remote_port_add zeros the space to which
1604 * rport->dd_data points. So, if we're reusing a previously
1605 * registered port, drop the reference that we took the last time we
1606 * registered the port.
1607 */
1608 if (ndlp->rport && ndlp->rport->dd_data &&
1609 ((struct lpfc_rport_data *) ndlp->rport->dd_data)->pnode == ndlp)
1610 lpfc_nlp_put(ndlp);
1611
1612 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
1613 "rport add: did:x%x flg:x%x type x%x",
1614 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
1615
1616 ndlp->rport = rport = fc_remote_port_add(shost, 0, &rport_ids);
1617 if (!rport || !get_device(&rport->dev)) {
1618 dev_printk(KERN_WARNING, &phba->pcidev->dev,
1619 "Warning: fc_remote_port_add failed\n");
1620 return;
1621 }
1622
1623 /* initialize static port data */
1624 rport->maxframe_size = ndlp->nlp_maxframe;
1625 rport->supported_classes = ndlp->nlp_class_sup;
1626 rdata = rport->dd_data;
1627 rdata->pnode = lpfc_nlp_get(ndlp);
1628
1629 if (ndlp->nlp_type & NLP_FCP_TARGET)
1630 rport_ids.roles |= FC_RPORT_ROLE_FCP_TARGET;
1631 if (ndlp->nlp_type & NLP_FCP_INITIATOR)
1632 rport_ids.roles |= FC_RPORT_ROLE_FCP_INITIATOR;
1633
1634
1635 if (rport_ids.roles != FC_RPORT_ROLE_UNKNOWN)
1636 fc_remote_port_rolechg(rport, rport_ids.roles);
1637
1638 if ((rport->scsi_target_id != -1) &&
1639 (rport->scsi_target_id < LPFC_MAX_TARGET)) {
1640 ndlp->nlp_sid = rport->scsi_target_id;
1641 }
1642 return;
1643 }
1644
1645 static void
1646 lpfc_unregister_remote_port(struct lpfc_nodelist *ndlp)
1647 {
1648 struct fc_rport *rport = ndlp->rport;
1649
1650 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_RPORT,
1651 "rport delete: did:x%x flg:x%x type x%x",
1652 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
1653
1654 fc_remote_port_delete(rport);
1655
1656 return;
1657 }
1658
1659 static void
1660 lpfc_nlp_counters(struct lpfc_vport *vport, int state, int count)
1661 {
1662 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1663
1664 spin_lock_irq(shost->host_lock);
1665 switch (state) {
1666 case NLP_STE_UNUSED_NODE:
1667 vport->fc_unused_cnt += count;
1668 break;
1669 case NLP_STE_PLOGI_ISSUE:
1670 vport->fc_plogi_cnt += count;
1671 break;
1672 case NLP_STE_ADISC_ISSUE:
1673 vport->fc_adisc_cnt += count;
1674 break;
1675 case NLP_STE_REG_LOGIN_ISSUE:
1676 vport->fc_reglogin_cnt += count;
1677 break;
1678 case NLP_STE_PRLI_ISSUE:
1679 vport->fc_prli_cnt += count;
1680 break;
1681 case NLP_STE_UNMAPPED_NODE:
1682 vport->fc_unmap_cnt += count;
1683 break;
1684 case NLP_STE_MAPPED_NODE:
1685 vport->fc_map_cnt += count;
1686 break;
1687 case NLP_STE_NPR_NODE:
1688 vport->fc_npr_cnt += count;
1689 break;
1690 }
1691 spin_unlock_irq(shost->host_lock);
1692 }
1693
1694 static void
1695 lpfc_nlp_state_cleanup(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1696 int old_state, int new_state)
1697 {
1698 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1699
1700 if (new_state == NLP_STE_UNMAPPED_NODE) {
1701 ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
1702 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE;
1703 ndlp->nlp_type |= NLP_FC_NODE;
1704 }
1705 if (new_state == NLP_STE_MAPPED_NODE)
1706 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE;
1707 if (new_state == NLP_STE_NPR_NODE)
1708 ndlp->nlp_flag &= ~NLP_RCV_PLOGI;
1709
1710 /* Transport interface */
1711 if (ndlp->rport && (old_state == NLP_STE_MAPPED_NODE ||
1712 old_state == NLP_STE_UNMAPPED_NODE)) {
1713 vport->phba->nport_event_cnt++;
1714 lpfc_unregister_remote_port(ndlp);
1715 }
1716
1717 if (new_state == NLP_STE_MAPPED_NODE ||
1718 new_state == NLP_STE_UNMAPPED_NODE) {
1719 vport->phba->nport_event_cnt++;
1720 /*
1721 * Tell the fc transport about the port, if we haven't
1722 * already. If we have, and it's a scsi entity, be
1723 * sure to unblock any attached scsi devices
1724 */
1725 lpfc_register_remote_port(vport, ndlp);
1726 }
1727 if ((new_state == NLP_STE_MAPPED_NODE) &&
1728 (vport->stat_data_enabled)) {
1729 /*
1730 * A new target is discovered, if there is no buffer for
1731 * statistical data collection allocate buffer.
1732 */
1733 ndlp->lat_data = kcalloc(LPFC_MAX_BUCKET_COUNT,
1734 sizeof(struct lpfc_scsicmd_bkt),
1735 GFP_KERNEL);
1736
1737 if (!ndlp->lat_data)
1738 lpfc_printf_vlog(vport, KERN_ERR, LOG_NODE,
1739 "0286 lpfc_nlp_state_cleanup failed to "
1740 "allocate statistical data buffer DID "
1741 "0x%x\n", ndlp->nlp_DID);
1742 }
1743 /*
1744 * if we added to Mapped list, but the remote port
1745 * registration failed or assigned a target id outside
1746 * our presentable range - move the node to the
1747 * Unmapped List
1748 */
1749 if (new_state == NLP_STE_MAPPED_NODE &&
1750 (!ndlp->rport ||
1751 ndlp->rport->scsi_target_id == -1 ||
1752 ndlp->rport->scsi_target_id >= LPFC_MAX_TARGET)) {
1753 spin_lock_irq(shost->host_lock);
1754 ndlp->nlp_flag |= NLP_TGT_NO_SCSIID;
1755 spin_unlock_irq(shost->host_lock);
1756 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1757 }
1758 }
1759
1760 static char *
1761 lpfc_nlp_state_name(char *buffer, size_t size, int state)
1762 {
1763 static char *states[] = {
1764 [NLP_STE_UNUSED_NODE] = "UNUSED",
1765 [NLP_STE_PLOGI_ISSUE] = "PLOGI",
1766 [NLP_STE_ADISC_ISSUE] = "ADISC",
1767 [NLP_STE_REG_LOGIN_ISSUE] = "REGLOGIN",
1768 [NLP_STE_PRLI_ISSUE] = "PRLI",
1769 [NLP_STE_UNMAPPED_NODE] = "UNMAPPED",
1770 [NLP_STE_MAPPED_NODE] = "MAPPED",
1771 [NLP_STE_NPR_NODE] = "NPR",
1772 };
1773
1774 if (state < NLP_STE_MAX_STATE && states[state])
1775 strlcpy(buffer, states[state], size);
1776 else
1777 snprintf(buffer, size, "unknown (%d)", state);
1778 return buffer;
1779 }
1780
1781 void
1782 lpfc_nlp_set_state(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1783 int state)
1784 {
1785 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1786 int old_state = ndlp->nlp_state;
1787 char name1[16], name2[16];
1788
1789 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
1790 "0904 NPort state transition x%06x, %s -> %s\n",
1791 ndlp->nlp_DID,
1792 lpfc_nlp_state_name(name1, sizeof(name1), old_state),
1793 lpfc_nlp_state_name(name2, sizeof(name2), state));
1794
1795 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
1796 "node statechg did:x%x old:%d ste:%d",
1797 ndlp->nlp_DID, old_state, state);
1798
1799 if (old_state == NLP_STE_NPR_NODE &&
1800 state != NLP_STE_NPR_NODE)
1801 lpfc_cancel_retry_delay_tmo(vport, ndlp);
1802 if (old_state == NLP_STE_UNMAPPED_NODE) {
1803 ndlp->nlp_flag &= ~NLP_TGT_NO_SCSIID;
1804 ndlp->nlp_type &= ~NLP_FC_NODE;
1805 }
1806
1807 if (list_empty(&ndlp->nlp_listp)) {
1808 spin_lock_irq(shost->host_lock);
1809 list_add_tail(&ndlp->nlp_listp, &vport->fc_nodes);
1810 spin_unlock_irq(shost->host_lock);
1811 } else if (old_state)
1812 lpfc_nlp_counters(vport, old_state, -1);
1813
1814 ndlp->nlp_state = state;
1815 lpfc_nlp_counters(vport, state, 1);
1816 lpfc_nlp_state_cleanup(vport, ndlp, old_state, state);
1817 }
1818
1819 void
1820 lpfc_enqueue_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
1821 {
1822 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1823
1824 if (list_empty(&ndlp->nlp_listp)) {
1825 spin_lock_irq(shost->host_lock);
1826 list_add_tail(&ndlp->nlp_listp, &vport->fc_nodes);
1827 spin_unlock_irq(shost->host_lock);
1828 }
1829 }
1830
1831 void
1832 lpfc_dequeue_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
1833 {
1834 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1835
1836 lpfc_cancel_retry_delay_tmo(vport, ndlp);
1837 if (ndlp->nlp_state && !list_empty(&ndlp->nlp_listp))
1838 lpfc_nlp_counters(vport, ndlp->nlp_state, -1);
1839 spin_lock_irq(shost->host_lock);
1840 list_del_init(&ndlp->nlp_listp);
1841 spin_unlock_irq(shost->host_lock);
1842 lpfc_nlp_state_cleanup(vport, ndlp, ndlp->nlp_state,
1843 NLP_STE_UNUSED_NODE);
1844 }
1845
1846 static void
1847 lpfc_disable_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
1848 {
1849 lpfc_cancel_retry_delay_tmo(vport, ndlp);
1850 if (ndlp->nlp_state && !list_empty(&ndlp->nlp_listp))
1851 lpfc_nlp_counters(vport, ndlp->nlp_state, -1);
1852 lpfc_nlp_state_cleanup(vport, ndlp, ndlp->nlp_state,
1853 NLP_STE_UNUSED_NODE);
1854 }
1855
1856 struct lpfc_nodelist *
1857 lpfc_enable_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1858 int state)
1859 {
1860 struct lpfc_hba *phba = vport->phba;
1861 uint32_t did;
1862 unsigned long flags;
1863
1864 if (!ndlp)
1865 return NULL;
1866
1867 spin_lock_irqsave(&phba->ndlp_lock, flags);
1868 /* The ndlp should not be in memory free mode */
1869 if (NLP_CHK_FREE_REQ(ndlp)) {
1870 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
1871 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE,
1872 "0277 lpfc_enable_node: ndlp:x%p "
1873 "usgmap:x%x refcnt:%d\n",
1874 (void *)ndlp, ndlp->nlp_usg_map,
1875 atomic_read(&ndlp->kref.refcount));
1876 return NULL;
1877 }
1878 /* The ndlp should not already be in active mode */
1879 if (NLP_CHK_NODE_ACT(ndlp)) {
1880 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
1881 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE,
1882 "0278 lpfc_enable_node: ndlp:x%p "
1883 "usgmap:x%x refcnt:%d\n",
1884 (void *)ndlp, ndlp->nlp_usg_map,
1885 atomic_read(&ndlp->kref.refcount));
1886 return NULL;
1887 }
1888
1889 /* Keep the original DID */
1890 did = ndlp->nlp_DID;
1891
1892 /* re-initialize ndlp except of ndlp linked list pointer */
1893 memset((((char *)ndlp) + sizeof (struct list_head)), 0,
1894 sizeof (struct lpfc_nodelist) - sizeof (struct list_head));
1895 INIT_LIST_HEAD(&ndlp->els_retry_evt.evt_listp);
1896 INIT_LIST_HEAD(&ndlp->dev_loss_evt.evt_listp);
1897 init_timer(&ndlp->nlp_delayfunc);
1898 ndlp->nlp_delayfunc.function = lpfc_els_retry_delay;
1899 ndlp->nlp_delayfunc.data = (unsigned long)ndlp;
1900 ndlp->nlp_DID = did;
1901 ndlp->vport = vport;
1902 ndlp->nlp_sid = NLP_NO_SID;
1903 /* ndlp management re-initialize */
1904 kref_init(&ndlp->kref);
1905 NLP_INT_NODE_ACT(ndlp);
1906
1907 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
1908
1909 if (state != NLP_STE_UNUSED_NODE)
1910 lpfc_nlp_set_state(vport, ndlp, state);
1911
1912 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
1913 "node enable: did:x%x",
1914 ndlp->nlp_DID, 0, 0);
1915 return ndlp;
1916 }
1917
1918 void
1919 lpfc_drop_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
1920 {
1921 /*
1922 * Use of lpfc_drop_node and UNUSED list: lpfc_drop_node should
1923 * be used if we wish to issue the "last" lpfc_nlp_put() to remove
1924 * the ndlp from the vport. The ndlp marked as UNUSED on the list
1925 * until ALL other outstanding threads have completed. We check
1926 * that the ndlp not already in the UNUSED state before we proceed.
1927 */
1928 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
1929 return;
1930 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNUSED_NODE);
1931 lpfc_nlp_put(ndlp);
1932 return;
1933 }
1934
1935 /*
1936 * Start / ReStart rescue timer for Discovery / RSCN handling
1937 */
1938 void
1939 lpfc_set_disctmo(struct lpfc_vport *vport)
1940 {
1941 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1942 struct lpfc_hba *phba = vport->phba;
1943 uint32_t tmo;
1944
1945 if (vport->port_state == LPFC_LOCAL_CFG_LINK) {
1946 /* For FAN, timeout should be greater then edtov */
1947 tmo = (((phba->fc_edtov + 999) / 1000) + 1);
1948 } else {
1949 /* Normal discovery timeout should be > then ELS/CT timeout
1950 * FC spec states we need 3 * ratov for CT requests
1951 */
1952 tmo = ((phba->fc_ratov * 3) + 3);
1953 }
1954
1955
1956 if (!timer_pending(&vport->fc_disctmo)) {
1957 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
1958 "set disc timer: tmo:x%x state:x%x flg:x%x",
1959 tmo, vport->port_state, vport->fc_flag);
1960 }
1961
1962 mod_timer(&vport->fc_disctmo, jiffies + HZ * tmo);
1963 spin_lock_irq(shost->host_lock);
1964 vport->fc_flag |= FC_DISC_TMO;
1965 spin_unlock_irq(shost->host_lock);
1966
1967 /* Start Discovery Timer state <hba_state> */
1968 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
1969 "0247 Start Discovery Timer state x%x "
1970 "Data: x%x x%lx x%x x%x\n",
1971 vport->port_state, tmo,
1972 (unsigned long)&vport->fc_disctmo, vport->fc_plogi_cnt,
1973 vport->fc_adisc_cnt);
1974
1975 return;
1976 }
1977
1978 /*
1979 * Cancel rescue timer for Discovery / RSCN handling
1980 */
1981 int
1982 lpfc_can_disctmo(struct lpfc_vport *vport)
1983 {
1984 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1985 unsigned long iflags;
1986
1987 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
1988 "can disc timer: state:x%x rtry:x%x flg:x%x",
1989 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
1990
1991 /* Turn off discovery timer if its running */
1992 if (vport->fc_flag & FC_DISC_TMO) {
1993 spin_lock_irqsave(shost->host_lock, iflags);
1994 vport->fc_flag &= ~FC_DISC_TMO;
1995 spin_unlock_irqrestore(shost->host_lock, iflags);
1996 del_timer_sync(&vport->fc_disctmo);
1997 spin_lock_irqsave(&vport->work_port_lock, iflags);
1998 vport->work_port_events &= ~WORKER_DISC_TMO;
1999 spin_unlock_irqrestore(&vport->work_port_lock, iflags);
2000 }
2001
2002 /* Cancel Discovery Timer state <hba_state> */
2003 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2004 "0248 Cancel Discovery Timer state x%x "
2005 "Data: x%x x%x x%x\n",
2006 vport->port_state, vport->fc_flag,
2007 vport->fc_plogi_cnt, vport->fc_adisc_cnt);
2008 return 0;
2009 }
2010
2011 /*
2012 * Check specified ring for outstanding IOCB on the SLI queue
2013 * Return true if iocb matches the specified nport
2014 */
2015 int
2016 lpfc_check_sli_ndlp(struct lpfc_hba *phba,
2017 struct lpfc_sli_ring *pring,
2018 struct lpfc_iocbq *iocb,
2019 struct lpfc_nodelist *ndlp)
2020 {
2021 struct lpfc_sli *psli = &phba->sli;
2022 IOCB_t *icmd = &iocb->iocb;
2023 struct lpfc_vport *vport = ndlp->vport;
2024
2025 if (iocb->vport != vport)
2026 return 0;
2027
2028 if (pring->ringno == LPFC_ELS_RING) {
2029 switch (icmd->ulpCommand) {
2030 case CMD_GEN_REQUEST64_CR:
2031 if (icmd->ulpContext == (volatile ushort)ndlp->nlp_rpi)
2032 return 1;
2033 case CMD_ELS_REQUEST64_CR:
2034 if (icmd->un.elsreq64.remoteID == ndlp->nlp_DID)
2035 return 1;
2036 case CMD_XMIT_ELS_RSP64_CX:
2037 if (iocb->context1 == (uint8_t *) ndlp)
2038 return 1;
2039 }
2040 } else if (pring->ringno == psli->extra_ring) {
2041
2042 } else if (pring->ringno == psli->fcp_ring) {
2043 /* Skip match check if waiting to relogin to FCP target */
2044 if ((ndlp->nlp_type & NLP_FCP_TARGET) &&
2045 (ndlp->nlp_flag & NLP_DELAY_TMO)) {
2046 return 0;
2047 }
2048 if (icmd->ulpContext == (volatile ushort)ndlp->nlp_rpi) {
2049 return 1;
2050 }
2051 } else if (pring->ringno == psli->next_ring) {
2052
2053 }
2054 return 0;
2055 }
2056
2057 /*
2058 * Free resources / clean up outstanding I/Os
2059 * associated with nlp_rpi in the LPFC_NODELIST entry.
2060 */
2061 static int
2062 lpfc_no_rpi(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
2063 {
2064 LIST_HEAD(completions);
2065 struct lpfc_sli *psli;
2066 struct lpfc_sli_ring *pring;
2067 struct lpfc_iocbq *iocb, *next_iocb;
2068 IOCB_t *icmd;
2069 uint32_t rpi, i;
2070
2071 lpfc_fabric_abort_nport(ndlp);
2072
2073 /*
2074 * Everything that matches on txcmplq will be returned
2075 * by firmware with a no rpi error.
2076 */
2077 psli = &phba->sli;
2078 rpi = ndlp->nlp_rpi;
2079 if (rpi) {
2080 /* Now process each ring */
2081 for (i = 0; i < psli->num_rings; i++) {
2082 pring = &psli->ring[i];
2083
2084 spin_lock_irq(&phba->hbalock);
2085 list_for_each_entry_safe(iocb, next_iocb, &pring->txq,
2086 list) {
2087 /*
2088 * Check to see if iocb matches the nport we are
2089 * looking for
2090 */
2091 if ((lpfc_check_sli_ndlp(phba, pring, iocb,
2092 ndlp))) {
2093 /* It matches, so deque and call compl
2094 with an error */
2095 list_move_tail(&iocb->list,
2096 &completions);
2097 pring->txq_cnt--;
2098 }
2099 }
2100 spin_unlock_irq(&phba->hbalock);
2101 }
2102 }
2103
2104 while (!list_empty(&completions)) {
2105 iocb = list_get_first(&completions, struct lpfc_iocbq, list);
2106 list_del_init(&iocb->list);
2107
2108 if (!iocb->iocb_cmpl)
2109 lpfc_sli_release_iocbq(phba, iocb);
2110 else {
2111 icmd = &iocb->iocb;
2112 icmd->ulpStatus = IOSTAT_LOCAL_REJECT;
2113 icmd->un.ulpWord[4] = IOERR_SLI_ABORTED;
2114 (iocb->iocb_cmpl)(phba, iocb, iocb);
2115 }
2116 }
2117
2118 return 0;
2119 }
2120
2121 /*
2122 * Free rpi associated with LPFC_NODELIST entry.
2123 * This routine is called from lpfc_freenode(), when we are removing
2124 * a LPFC_NODELIST entry. It is also called if the driver initiates a
2125 * LOGO that completes successfully, and we are waiting to PLOGI back
2126 * to the remote NPort. In addition, it is called after we receive
2127 * and unsolicated ELS cmd, send back a rsp, the rsp completes and
2128 * we are waiting to PLOGI back to the remote NPort.
2129 */
2130 int
2131 lpfc_unreg_rpi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
2132 {
2133 struct lpfc_hba *phba = vport->phba;
2134 LPFC_MBOXQ_t *mbox;
2135 int rc;
2136
2137 if (ndlp->nlp_rpi) {
2138 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2139 if (mbox) {
2140 lpfc_unreg_login(phba, vport->vpi, ndlp->nlp_rpi, mbox);
2141 mbox->vport = vport;
2142 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
2143 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
2144 if (rc == MBX_NOT_FINISHED)
2145 mempool_free(mbox, phba->mbox_mem_pool);
2146 }
2147 lpfc_no_rpi(phba, ndlp);
2148 ndlp->nlp_rpi = 0;
2149 return 1;
2150 }
2151 return 0;
2152 }
2153
2154 void
2155 lpfc_unreg_all_rpis(struct lpfc_vport *vport)
2156 {
2157 struct lpfc_hba *phba = vport->phba;
2158 LPFC_MBOXQ_t *mbox;
2159 int rc;
2160
2161 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2162 if (mbox) {
2163 lpfc_unreg_login(phba, vport->vpi, 0xffff, mbox);
2164 mbox->vport = vport;
2165 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
2166 mbox->context1 = NULL;
2167 rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO);
2168 if (rc == MBX_NOT_FINISHED) {
2169 mempool_free(mbox, phba->mbox_mem_pool);
2170 }
2171 }
2172 }
2173
2174 void
2175 lpfc_unreg_default_rpis(struct lpfc_vport *vport)
2176 {
2177 struct lpfc_hba *phba = vport->phba;
2178 LPFC_MBOXQ_t *mbox;
2179 int rc;
2180
2181 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2182 if (mbox) {
2183 lpfc_unreg_did(phba, vport->vpi, 0xffffffff, mbox);
2184 mbox->vport = vport;
2185 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
2186 mbox->context1 = NULL;
2187 rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO);
2188 if (rc == MBX_NOT_FINISHED) {
2189 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX | LOG_VPORT,
2190 "1815 Could not issue "
2191 "unreg_did (default rpis)\n");
2192 mempool_free(mbox, phba->mbox_mem_pool);
2193 }
2194 }
2195 }
2196
2197 /*
2198 * Free resources associated with LPFC_NODELIST entry
2199 * so it can be freed.
2200 */
2201 static int
2202 lpfc_cleanup_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
2203 {
2204 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2205 struct lpfc_hba *phba = vport->phba;
2206 LPFC_MBOXQ_t *mb, *nextmb;
2207 struct lpfc_dmabuf *mp;
2208
2209 /* Cleanup node for NPort <nlp_DID> */
2210 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
2211 "0900 Cleanup node for NPort x%x "
2212 "Data: x%x x%x x%x\n",
2213 ndlp->nlp_DID, ndlp->nlp_flag,
2214 ndlp->nlp_state, ndlp->nlp_rpi);
2215 if (NLP_CHK_FREE_REQ(ndlp)) {
2216 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE,
2217 "0280 lpfc_cleanup_node: ndlp:x%p "
2218 "usgmap:x%x refcnt:%d\n",
2219 (void *)ndlp, ndlp->nlp_usg_map,
2220 atomic_read(&ndlp->kref.refcount));
2221 lpfc_dequeue_node(vport, ndlp);
2222 } else {
2223 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE,
2224 "0281 lpfc_cleanup_node: ndlp:x%p "
2225 "usgmap:x%x refcnt:%d\n",
2226 (void *)ndlp, ndlp->nlp_usg_map,
2227 atomic_read(&ndlp->kref.refcount));
2228 lpfc_disable_node(vport, ndlp);
2229 }
2230
2231 /* cleanup any ndlp on mbox q waiting for reglogin cmpl */
2232 if ((mb = phba->sli.mbox_active)) {
2233 if ((mb->mb.mbxCommand == MBX_REG_LOGIN64) &&
2234 (ndlp == (struct lpfc_nodelist *) mb->context2)) {
2235 mb->context2 = NULL;
2236 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
2237 }
2238 }
2239
2240 spin_lock_irq(&phba->hbalock);
2241 list_for_each_entry_safe(mb, nextmb, &phba->sli.mboxq, list) {
2242 if ((mb->mb.mbxCommand == MBX_REG_LOGIN64) &&
2243 (ndlp == (struct lpfc_nodelist *) mb->context2)) {
2244 mp = (struct lpfc_dmabuf *) (mb->context1);
2245 if (mp) {
2246 __lpfc_mbuf_free(phba, mp->virt, mp->phys);
2247 kfree(mp);
2248 }
2249 list_del(&mb->list);
2250 mempool_free(mb, phba->mbox_mem_pool);
2251 /* We shall not invoke the lpfc_nlp_put to decrement
2252 * the ndlp reference count as we are in the process
2253 * of lpfc_nlp_release.
2254 */
2255 }
2256 }
2257 spin_unlock_irq(&phba->hbalock);
2258
2259 lpfc_els_abort(phba, ndlp);
2260
2261 spin_lock_irq(shost->host_lock);
2262 ndlp->nlp_flag &= ~NLP_DELAY_TMO;
2263 spin_unlock_irq(shost->host_lock);
2264
2265 ndlp->nlp_last_elscmd = 0;
2266 del_timer_sync(&ndlp->nlp_delayfunc);
2267
2268 list_del_init(&ndlp->els_retry_evt.evt_listp);
2269 list_del_init(&ndlp->dev_loss_evt.evt_listp);
2270
2271 lpfc_unreg_rpi(vport, ndlp);
2272
2273 return 0;
2274 }
2275
2276 /*
2277 * Check to see if we can free the nlp back to the freelist.
2278 * If we are in the middle of using the nlp in the discovery state
2279 * machine, defer the free till we reach the end of the state machine.
2280 */
2281 static void
2282 lpfc_nlp_remove(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
2283 {
2284 struct lpfc_hba *phba = vport->phba;
2285 struct lpfc_rport_data *rdata;
2286 LPFC_MBOXQ_t *mbox;
2287 int rc;
2288
2289 lpfc_cancel_retry_delay_tmo(vport, ndlp);
2290 if (ndlp->nlp_flag & NLP_DEFER_RM && !ndlp->nlp_rpi) {
2291 /* For this case we need to cleanup the default rpi
2292 * allocated by the firmware.
2293 */
2294 if ((mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL))
2295 != NULL) {
2296 rc = lpfc_reg_login(phba, vport->vpi, ndlp->nlp_DID,
2297 (uint8_t *) &vport->fc_sparam, mbox, 0);
2298 if (rc) {
2299 mempool_free(mbox, phba->mbox_mem_pool);
2300 }
2301 else {
2302 mbox->mbox_flag |= LPFC_MBX_IMED_UNREG;
2303 mbox->mbox_cmpl = lpfc_mbx_cmpl_dflt_rpi;
2304 mbox->vport = vport;
2305 mbox->context2 = NULL;
2306 rc =lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
2307 if (rc == MBX_NOT_FINISHED) {
2308 mempool_free(mbox, phba->mbox_mem_pool);
2309 }
2310 }
2311 }
2312 }
2313 lpfc_cleanup_node(vport, ndlp);
2314
2315 /*
2316 * We can get here with a non-NULL ndlp->rport because when we
2317 * unregister a rport we don't break the rport/node linkage. So if we
2318 * do, make sure we don't leaving any dangling pointers behind.
2319 */
2320 if (ndlp->rport) {
2321 rdata = ndlp->rport->dd_data;
2322 rdata->pnode = NULL;
2323 ndlp->rport = NULL;
2324 }
2325 }
2326
2327 static int
2328 lpfc_matchdid(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2329 uint32_t did)
2330 {
2331 D_ID mydid, ndlpdid, matchdid;
2332
2333 if (did == Bcast_DID)
2334 return 0;
2335
2336 /* First check for Direct match */
2337 if (ndlp->nlp_DID == did)
2338 return 1;
2339
2340 /* Next check for area/domain identically equals 0 match */
2341 mydid.un.word = vport->fc_myDID;
2342 if ((mydid.un.b.domain == 0) && (mydid.un.b.area == 0)) {
2343 return 0;
2344 }
2345
2346 matchdid.un.word = did;
2347 ndlpdid.un.word = ndlp->nlp_DID;
2348 if (matchdid.un.b.id == ndlpdid.un.b.id) {
2349 if ((mydid.un.b.domain == matchdid.un.b.domain) &&
2350 (mydid.un.b.area == matchdid.un.b.area)) {
2351 if ((ndlpdid.un.b.domain == 0) &&
2352 (ndlpdid.un.b.area == 0)) {
2353 if (ndlpdid.un.b.id)
2354 return 1;
2355 }
2356 return 0;
2357 }
2358
2359 matchdid.un.word = ndlp->nlp_DID;
2360 if ((mydid.un.b.domain == ndlpdid.un.b.domain) &&
2361 (mydid.un.b.area == ndlpdid.un.b.area)) {
2362 if ((matchdid.un.b.domain == 0) &&
2363 (matchdid.un.b.area == 0)) {
2364 if (matchdid.un.b.id)
2365 return 1;
2366 }
2367 }
2368 }
2369 return 0;
2370 }
2371
2372 /* Search for a nodelist entry */
2373 static struct lpfc_nodelist *
2374 __lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did)
2375 {
2376 struct lpfc_nodelist *ndlp;
2377 uint32_t data1;
2378
2379 list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
2380 if (lpfc_matchdid(vport, ndlp, did)) {
2381 data1 = (((uint32_t) ndlp->nlp_state << 24) |
2382 ((uint32_t) ndlp->nlp_xri << 16) |
2383 ((uint32_t) ndlp->nlp_type << 8) |
2384 ((uint32_t) ndlp->nlp_rpi & 0xff));
2385 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
2386 "0929 FIND node DID "
2387 "Data: x%p x%x x%x x%x\n",
2388 ndlp, ndlp->nlp_DID,
2389 ndlp->nlp_flag, data1);
2390 return ndlp;
2391 }
2392 }
2393
2394 /* FIND node did <did> NOT FOUND */
2395 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
2396 "0932 FIND node did x%x NOT FOUND.\n", did);
2397 return NULL;
2398 }
2399
2400 struct lpfc_nodelist *
2401 lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did)
2402 {
2403 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2404 struct lpfc_nodelist *ndlp;
2405
2406 spin_lock_irq(shost->host_lock);
2407 ndlp = __lpfc_findnode_did(vport, did);
2408 spin_unlock_irq(shost->host_lock);
2409 return ndlp;
2410 }
2411
2412 struct lpfc_nodelist *
2413 lpfc_setup_disc_node(struct lpfc_vport *vport, uint32_t did)
2414 {
2415 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2416 struct lpfc_nodelist *ndlp;
2417
2418 ndlp = lpfc_findnode_did(vport, did);
2419 if (!ndlp) {
2420 if ((vport->fc_flag & FC_RSCN_MODE) != 0 &&
2421 lpfc_rscn_payload_check(vport, did) == 0)
2422 return NULL;
2423 ndlp = (struct lpfc_nodelist *)
2424 mempool_alloc(vport->phba->nlp_mem_pool, GFP_KERNEL);
2425 if (!ndlp)
2426 return NULL;
2427 lpfc_nlp_init(vport, ndlp, did);
2428 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2429 spin_lock_irq(shost->host_lock);
2430 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
2431 spin_unlock_irq(shost->host_lock);
2432 return ndlp;
2433 } else if (!NLP_CHK_NODE_ACT(ndlp)) {
2434 ndlp = lpfc_enable_node(vport, ndlp, NLP_STE_NPR_NODE);
2435 if (!ndlp)
2436 return NULL;
2437 spin_lock_irq(shost->host_lock);
2438 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
2439 spin_unlock_irq(shost->host_lock);
2440 return ndlp;
2441 }
2442
2443 if ((vport->fc_flag & FC_RSCN_MODE) &&
2444 !(vport->fc_flag & FC_NDISC_ACTIVE)) {
2445 if (lpfc_rscn_payload_check(vport, did)) {
2446 /* If we've already recieved a PLOGI from this NPort
2447 * we don't need to try to discover it again.
2448 */
2449 if (ndlp->nlp_flag & NLP_RCV_PLOGI)
2450 return NULL;
2451
2452 spin_lock_irq(shost->host_lock);
2453 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
2454 spin_unlock_irq(shost->host_lock);
2455
2456 /* Since this node is marked for discovery,
2457 * delay timeout is not needed.
2458 */
2459 lpfc_cancel_retry_delay_tmo(vport, ndlp);
2460 } else
2461 ndlp = NULL;
2462 } else {
2463 /* If we've already recieved a PLOGI from this NPort,
2464 * or we are already in the process of discovery on it,
2465 * we don't need to try to discover it again.
2466 */
2467 if (ndlp->nlp_state == NLP_STE_ADISC_ISSUE ||
2468 ndlp->nlp_state == NLP_STE_PLOGI_ISSUE ||
2469 ndlp->nlp_flag & NLP_RCV_PLOGI)
2470 return NULL;
2471 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2472 spin_lock_irq(shost->host_lock);
2473 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
2474 spin_unlock_irq(shost->host_lock);
2475 }
2476 return ndlp;
2477 }
2478
2479 /* Build a list of nodes to discover based on the loopmap */
2480 void
2481 lpfc_disc_list_loopmap(struct lpfc_vport *vport)
2482 {
2483 struct lpfc_hba *phba = vport->phba;
2484 int j;
2485 uint32_t alpa, index;
2486
2487 if (!lpfc_is_link_up(phba))
2488 return;
2489
2490 if (phba->fc_topology != TOPOLOGY_LOOP)
2491 return;
2492
2493 /* Check for loop map present or not */
2494 if (phba->alpa_map[0]) {
2495 for (j = 1; j <= phba->alpa_map[0]; j++) {
2496 alpa = phba->alpa_map[j];
2497 if (((vport->fc_myDID & 0xff) == alpa) || (alpa == 0))
2498 continue;
2499 lpfc_setup_disc_node(vport, alpa);
2500 }
2501 } else {
2502 /* No alpamap, so try all alpa's */
2503 for (j = 0; j < FC_MAXLOOP; j++) {
2504 /* If cfg_scan_down is set, start from highest
2505 * ALPA (0xef) to lowest (0x1).
2506 */
2507 if (vport->cfg_scan_down)
2508 index = j;
2509 else
2510 index = FC_MAXLOOP - j - 1;
2511 alpa = lpfcAlpaArray[index];
2512 if ((vport->fc_myDID & 0xff) == alpa)
2513 continue;
2514 lpfc_setup_disc_node(vport, alpa);
2515 }
2516 }
2517 return;
2518 }
2519
2520 void
2521 lpfc_issue_clear_la(struct lpfc_hba *phba, struct lpfc_vport *vport)
2522 {
2523 LPFC_MBOXQ_t *mbox;
2524 struct lpfc_sli *psli = &phba->sli;
2525 struct lpfc_sli_ring *extra_ring = &psli->ring[psli->extra_ring];
2526 struct lpfc_sli_ring *fcp_ring = &psli->ring[psli->fcp_ring];
2527 struct lpfc_sli_ring *next_ring = &psli->ring[psli->next_ring];
2528 int rc;
2529
2530 /*
2531 * if it's not a physical port or if we already send
2532 * clear_la then don't send it.
2533 */
2534 if ((phba->link_state >= LPFC_CLEAR_LA) ||
2535 (vport->port_type != LPFC_PHYSICAL_PORT))
2536 return;
2537
2538 /* Link up discovery */
2539 if ((mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL)) != NULL) {
2540 phba->link_state = LPFC_CLEAR_LA;
2541 lpfc_clear_la(phba, mbox);
2542 mbox->mbox_cmpl = lpfc_mbx_cmpl_clear_la;
2543 mbox->vport = vport;
2544 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
2545 if (rc == MBX_NOT_FINISHED) {
2546 mempool_free(mbox, phba->mbox_mem_pool);
2547 lpfc_disc_flush_list(vport);
2548 extra_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
2549 fcp_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
2550 next_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
2551 phba->link_state = LPFC_HBA_ERROR;
2552 }
2553 }
2554 }
2555
2556 /* Reg_vpi to tell firmware to resume normal operations */
2557 void
2558 lpfc_issue_reg_vpi(struct lpfc_hba *phba, struct lpfc_vport *vport)
2559 {
2560 LPFC_MBOXQ_t *regvpimbox;
2561
2562 regvpimbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2563 if (regvpimbox) {
2564 lpfc_reg_vpi(phba, vport->vpi, vport->fc_myDID, regvpimbox);
2565 regvpimbox->mbox_cmpl = lpfc_mbx_cmpl_reg_vpi;
2566 regvpimbox->vport = vport;
2567 if (lpfc_sli_issue_mbox(phba, regvpimbox, MBX_NOWAIT)
2568 == MBX_NOT_FINISHED) {
2569 mempool_free(regvpimbox, phba->mbox_mem_pool);
2570 }
2571 }
2572 }
2573
2574 /* Start Link up / RSCN discovery on NPR nodes */
2575 void
2576 lpfc_disc_start(struct lpfc_vport *vport)
2577 {
2578 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2579 struct lpfc_hba *phba = vport->phba;
2580 uint32_t num_sent;
2581 uint32_t clear_la_pending;
2582 int did_changed;
2583
2584 if (!lpfc_is_link_up(phba))
2585 return;
2586
2587 if (phba->link_state == LPFC_CLEAR_LA)
2588 clear_la_pending = 1;
2589 else
2590 clear_la_pending = 0;
2591
2592 if (vport->port_state < LPFC_VPORT_READY)
2593 vport->port_state = LPFC_DISC_AUTH;
2594
2595 lpfc_set_disctmo(vport);
2596
2597 if (vport->fc_prevDID == vport->fc_myDID)
2598 did_changed = 0;
2599 else
2600 did_changed = 1;
2601
2602 vport->fc_prevDID = vport->fc_myDID;
2603 vport->num_disc_nodes = 0;
2604
2605 /* Start Discovery state <hba_state> */
2606 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2607 "0202 Start Discovery hba state x%x "
2608 "Data: x%x x%x x%x\n",
2609 vport->port_state, vport->fc_flag, vport->fc_plogi_cnt,
2610 vport->fc_adisc_cnt);
2611
2612 /* First do ADISCs - if any */
2613 num_sent = lpfc_els_disc_adisc(vport);
2614
2615 if (num_sent)
2616 return;
2617
2618 /*
2619 * For SLI3, cmpl_reg_vpi will set port_state to READY, and
2620 * continue discovery.
2621 */
2622 if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
2623 !(vport->fc_flag & FC_PT2PT) &&
2624 !(vport->fc_flag & FC_RSCN_MODE)) {
2625 lpfc_issue_reg_vpi(phba, vport);
2626 return;
2627 }
2628
2629 /*
2630 * For SLI2, we need to set port_state to READY and continue
2631 * discovery.
2632 */
2633 if (vport->port_state < LPFC_VPORT_READY && !clear_la_pending) {
2634 /* If we get here, there is nothing to ADISC */
2635 if (vport->port_type == LPFC_PHYSICAL_PORT)
2636 lpfc_issue_clear_la(phba, vport);
2637
2638 if (!(vport->fc_flag & FC_ABORT_DISCOVERY)) {
2639 vport->num_disc_nodes = 0;
2640 /* go thru NPR nodes and issue ELS PLOGIs */
2641 if (vport->fc_npr_cnt)
2642 lpfc_els_disc_plogi(vport);
2643
2644 if (!vport->num_disc_nodes) {
2645 spin_lock_irq(shost->host_lock);
2646 vport->fc_flag &= ~FC_NDISC_ACTIVE;
2647 spin_unlock_irq(shost->host_lock);
2648 lpfc_can_disctmo(vport);
2649 }
2650 }
2651 vport->port_state = LPFC_VPORT_READY;
2652 } else {
2653 /* Next do PLOGIs - if any */
2654 num_sent = lpfc_els_disc_plogi(vport);
2655
2656 if (num_sent)
2657 return;
2658
2659 if (vport->fc_flag & FC_RSCN_MODE) {
2660 /* Check to see if more RSCNs came in while we
2661 * were processing this one.
2662 */
2663 if ((vport->fc_rscn_id_cnt == 0) &&
2664 (!(vport->fc_flag & FC_RSCN_DISCOVERY))) {
2665 spin_lock_irq(shost->host_lock);
2666 vport->fc_flag &= ~FC_RSCN_MODE;
2667 spin_unlock_irq(shost->host_lock);
2668 lpfc_can_disctmo(vport);
2669 } else
2670 lpfc_els_handle_rscn(vport);
2671 }
2672 }
2673 return;
2674 }
2675
2676 /*
2677 * Ignore completion for all IOCBs on tx and txcmpl queue for ELS
2678 * ring the match the sppecified nodelist.
2679 */
2680 static void
2681 lpfc_free_tx(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
2682 {
2683 LIST_HEAD(completions);
2684 struct lpfc_sli *psli;
2685 IOCB_t *icmd;
2686 struct lpfc_iocbq *iocb, *next_iocb;
2687 struct lpfc_sli_ring *pring;
2688
2689 psli = &phba->sli;
2690 pring = &psli->ring[LPFC_ELS_RING];
2691
2692 /* Error matching iocb on txq or txcmplq
2693 * First check the txq.
2694 */
2695 spin_lock_irq(&phba->hbalock);
2696 list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
2697 if (iocb->context1 != ndlp) {
2698 continue;
2699 }
2700 icmd = &iocb->iocb;
2701 if ((icmd->ulpCommand == CMD_ELS_REQUEST64_CR) ||
2702 (icmd->ulpCommand == CMD_XMIT_ELS_RSP64_CX)) {
2703
2704 list_move_tail(&iocb->list, &completions);
2705 pring->txq_cnt--;
2706 }
2707 }
2708
2709 /* Next check the txcmplq */
2710 list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) {
2711 if (iocb->context1 != ndlp) {
2712 continue;
2713 }
2714 icmd = &iocb->iocb;
2715 if (icmd->ulpCommand == CMD_ELS_REQUEST64_CR ||
2716 icmd->ulpCommand == CMD_XMIT_ELS_RSP64_CX) {
2717 lpfc_sli_issue_abort_iotag(phba, pring, iocb);
2718 }
2719 }
2720 spin_unlock_irq(&phba->hbalock);
2721
2722 while (!list_empty(&completions)) {
2723 iocb = list_get_first(&completions, struct lpfc_iocbq, list);
2724 list_del_init(&iocb->list);
2725
2726 if (!iocb->iocb_cmpl)
2727 lpfc_sli_release_iocbq(phba, iocb);
2728 else {
2729 icmd = &iocb->iocb;
2730 icmd->ulpStatus = IOSTAT_LOCAL_REJECT;
2731 icmd->un.ulpWord[4] = IOERR_SLI_ABORTED;
2732 (iocb->iocb_cmpl) (phba, iocb, iocb);
2733 }
2734 }
2735 }
2736
2737 static void
2738 lpfc_disc_flush_list(struct lpfc_vport *vport)
2739 {
2740 struct lpfc_nodelist *ndlp, *next_ndlp;
2741 struct lpfc_hba *phba = vport->phba;
2742
2743 if (vport->fc_plogi_cnt || vport->fc_adisc_cnt) {
2744 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes,
2745 nlp_listp) {
2746 if (!NLP_CHK_NODE_ACT(ndlp))
2747 continue;
2748 if (ndlp->nlp_state == NLP_STE_PLOGI_ISSUE ||
2749 ndlp->nlp_state == NLP_STE_ADISC_ISSUE) {
2750 lpfc_free_tx(phba, ndlp);
2751 }
2752 }
2753 }
2754 }
2755
2756 void
2757 lpfc_cleanup_discovery_resources(struct lpfc_vport *vport)
2758 {
2759 lpfc_els_flush_rscn(vport);
2760 lpfc_els_flush_cmd(vport);
2761 lpfc_disc_flush_list(vport);
2762 }
2763
2764 /*****************************************************************************/
2765 /*
2766 * NAME: lpfc_disc_timeout
2767 *
2768 * FUNCTION: Fibre Channel driver discovery timeout routine.
2769 *
2770 * EXECUTION ENVIRONMENT: interrupt only
2771 *
2772 * CALLED FROM:
2773 * Timer function
2774 *
2775 * RETURNS:
2776 * none
2777 */
2778 /*****************************************************************************/
2779 void
2780 lpfc_disc_timeout(unsigned long ptr)
2781 {
2782 struct lpfc_vport *vport = (struct lpfc_vport *) ptr;
2783 struct lpfc_hba *phba = vport->phba;
2784 uint32_t tmo_posted;
2785 unsigned long flags = 0;
2786
2787 if (unlikely(!phba))
2788 return;
2789
2790 spin_lock_irqsave(&vport->work_port_lock, flags);
2791 tmo_posted = vport->work_port_events & WORKER_DISC_TMO;
2792 if (!tmo_posted)
2793 vport->work_port_events |= WORKER_DISC_TMO;
2794 spin_unlock_irqrestore(&vport->work_port_lock, flags);
2795
2796 if (!tmo_posted)
2797 lpfc_worker_wake_up(phba);
2798 return;
2799 }
2800
2801 static void
2802 lpfc_disc_timeout_handler(struct lpfc_vport *vport)
2803 {
2804 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2805 struct lpfc_hba *phba = vport->phba;
2806 struct lpfc_sli *psli = &phba->sli;
2807 struct lpfc_nodelist *ndlp, *next_ndlp;
2808 LPFC_MBOXQ_t *initlinkmbox;
2809 int rc, clrlaerr = 0;
2810
2811 if (!(vport->fc_flag & FC_DISC_TMO))
2812 return;
2813
2814 spin_lock_irq(shost->host_lock);
2815 vport->fc_flag &= ~FC_DISC_TMO;
2816 spin_unlock_irq(shost->host_lock);
2817
2818 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
2819 "disc timeout: state:x%x rtry:x%x flg:x%x",
2820 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
2821
2822 switch (vport->port_state) {
2823
2824 case LPFC_LOCAL_CFG_LINK:
2825 /* port_state is identically LPFC_LOCAL_CFG_LINK while waiting for
2826 * FAN
2827 */
2828 /* FAN timeout */
2829 lpfc_printf_vlog(vport, KERN_WARNING, LOG_DISCOVERY,
2830 "0221 FAN timeout\n");
2831 /* Start discovery by sending FLOGI, clean up old rpis */
2832 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes,
2833 nlp_listp) {
2834 if (!NLP_CHK_NODE_ACT(ndlp))
2835 continue;
2836 if (ndlp->nlp_state != NLP_STE_NPR_NODE)
2837 continue;
2838 if (ndlp->nlp_type & NLP_FABRIC) {
2839 /* Clean up the ndlp on Fabric connections */
2840 lpfc_drop_node(vport, ndlp);
2841
2842 } else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) {
2843 /* Fail outstanding IO now since device
2844 * is marked for PLOGI.
2845 */
2846 lpfc_unreg_rpi(vport, ndlp);
2847 }
2848 }
2849 if (vport->port_state != LPFC_FLOGI) {
2850 lpfc_initial_flogi(vport);
2851 return;
2852 }
2853 break;
2854
2855 case LPFC_FDISC:
2856 case LPFC_FLOGI:
2857 /* port_state is identically LPFC_FLOGI while waiting for FLOGI cmpl */
2858 /* Initial FLOGI timeout */
2859 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2860 "0222 Initial %s timeout\n",
2861 vport->vpi ? "FDISC" : "FLOGI");
2862
2863 /* Assume no Fabric and go on with discovery.
2864 * Check for outstanding ELS FLOGI to abort.
2865 */
2866
2867 /* FLOGI failed, so just use loop map to make discovery list */
2868 lpfc_disc_list_loopmap(vport);
2869
2870 /* Start discovery */
2871 lpfc_disc_start(vport);
2872 break;
2873
2874 case LPFC_FABRIC_CFG_LINK:
2875 /* hba_state is identically LPFC_FABRIC_CFG_LINK while waiting for
2876 NameServer login */
2877 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2878 "0223 Timeout while waiting for "
2879 "NameServer login\n");
2880 /* Next look for NameServer ndlp */
2881 ndlp = lpfc_findnode_did(vport, NameServer_DID);
2882 if (ndlp && NLP_CHK_NODE_ACT(ndlp))
2883 lpfc_els_abort(phba, ndlp);
2884
2885 /* ReStart discovery */
2886 goto restart_disc;
2887
2888 case LPFC_NS_QRY:
2889 /* Check for wait for NameServer Rsp timeout */
2890 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2891 "0224 NameServer Query timeout "
2892 "Data: x%x x%x\n",
2893 vport->fc_ns_retry, LPFC_MAX_NS_RETRY);
2894
2895 if (vport->fc_ns_retry < LPFC_MAX_NS_RETRY) {
2896 /* Try it one more time */
2897 vport->fc_ns_retry++;
2898 rc = lpfc_ns_cmd(vport, SLI_CTNS_GID_FT,
2899 vport->fc_ns_retry, 0);
2900 if (rc == 0)
2901 break;
2902 }
2903 vport->fc_ns_retry = 0;
2904
2905 restart_disc:
2906 /*
2907 * Discovery is over.
2908 * set port_state to PORT_READY if SLI2.
2909 * cmpl_reg_vpi will set port_state to READY for SLI3.
2910 */
2911 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
2912 lpfc_issue_reg_vpi(phba, vport);
2913 else { /* NPIV Not enabled */
2914 lpfc_issue_clear_la(phba, vport);
2915 vport->port_state = LPFC_VPORT_READY;
2916 }
2917
2918 /* Setup and issue mailbox INITIALIZE LINK command */
2919 initlinkmbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2920 if (!initlinkmbox) {
2921 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2922 "0206 Device Discovery "
2923 "completion error\n");
2924 phba->link_state = LPFC_HBA_ERROR;
2925 break;
2926 }
2927
2928 lpfc_linkdown(phba);
2929 lpfc_init_link(phba, initlinkmbox, phba->cfg_topology,
2930 phba->cfg_link_speed);
2931 initlinkmbox->mb.un.varInitLnk.lipsr_AL_PA = 0;
2932 initlinkmbox->vport = vport;
2933 initlinkmbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
2934 rc = lpfc_sli_issue_mbox(phba, initlinkmbox, MBX_NOWAIT);
2935 lpfc_set_loopback_flag(phba);
2936 if (rc == MBX_NOT_FINISHED)
2937 mempool_free(initlinkmbox, phba->mbox_mem_pool);
2938
2939 break;
2940
2941 case LPFC_DISC_AUTH:
2942 /* Node Authentication timeout */
2943 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2944 "0227 Node Authentication timeout\n");
2945 lpfc_disc_flush_list(vport);
2946
2947 /*
2948 * set port_state to PORT_READY if SLI2.
2949 * cmpl_reg_vpi will set port_state to READY for SLI3.
2950 */
2951 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
2952 lpfc_issue_reg_vpi(phba, vport);
2953 else { /* NPIV Not enabled */
2954 lpfc_issue_clear_la(phba, vport);
2955 vport->port_state = LPFC_VPORT_READY;
2956 }
2957 break;
2958
2959 case LPFC_VPORT_READY:
2960 if (vport->fc_flag & FC_RSCN_MODE) {
2961 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2962 "0231 RSCN timeout Data: x%x "
2963 "x%x\n",
2964 vport->fc_ns_retry, LPFC_MAX_NS_RETRY);
2965
2966 /* Cleanup any outstanding ELS commands */
2967 lpfc_els_flush_cmd(vport);
2968
2969 lpfc_els_flush_rscn(vport);
2970 lpfc_disc_flush_list(vport);
2971 }
2972 break;
2973
2974 default:
2975 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2976 "0273 Unexpected discovery timeout, "
2977 "vport State x%x\n", vport->port_state);
2978 break;
2979 }
2980
2981 switch (phba->link_state) {
2982 case LPFC_CLEAR_LA:
2983 /* CLEAR LA timeout */
2984 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2985 "0228 CLEAR LA timeout\n");
2986 clrlaerr = 1;
2987 break;
2988
2989 case LPFC_LINK_UP:
2990 lpfc_issue_clear_la(phba, vport);
2991 /* Drop thru */
2992 case LPFC_LINK_UNKNOWN:
2993 case LPFC_WARM_START:
2994 case LPFC_INIT_START:
2995 case LPFC_INIT_MBX_CMDS:
2996 case LPFC_LINK_DOWN:
2997 case LPFC_HBA_ERROR:
2998 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2999 "0230 Unexpected timeout, hba link "
3000 "state x%x\n", phba->link_state);
3001 clrlaerr = 1;
3002 break;
3003
3004 case LPFC_HBA_READY:
3005 break;
3006 }
3007
3008 if (clrlaerr) {
3009 lpfc_disc_flush_list(vport);
3010 psli->ring[(psli->extra_ring)].flag &= ~LPFC_STOP_IOCB_EVENT;
3011 psli->ring[(psli->fcp_ring)].flag &= ~LPFC_STOP_IOCB_EVENT;
3012 psli->ring[(psli->next_ring)].flag &= ~LPFC_STOP_IOCB_EVENT;
3013 vport->port_state = LPFC_VPORT_READY;
3014 }
3015
3016 return;
3017 }
3018
3019 /*
3020 * This routine handles processing a NameServer REG_LOGIN mailbox
3021 * command upon completion. It is setup in the LPFC_MBOXQ
3022 * as the completion routine when the command is
3023 * handed off to the SLI layer.
3024 */
3025 void
3026 lpfc_mbx_cmpl_fdmi_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
3027 {
3028 MAILBOX_t *mb = &pmb->mb;
3029 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
3030 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2;
3031 struct lpfc_vport *vport = pmb->vport;
3032
3033 pmb->context1 = NULL;
3034
3035 ndlp->nlp_rpi = mb->un.varWords[0];
3036 ndlp->nlp_type |= NLP_FABRIC;
3037 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
3038
3039 /*
3040 * Start issuing Fabric-Device Management Interface (FDMI) command to
3041 * 0xfffffa (FDMI well known port) or Delay issuing FDMI command if
3042 * fdmi-on=2 (supporting RPA/hostnmae)
3043 */
3044
3045 if (vport->cfg_fdmi_on == 1)
3046 lpfc_fdmi_cmd(vport, ndlp, SLI_MGMT_DHBA);
3047 else
3048 mod_timer(&vport->fc_fdmitmo, jiffies + HZ * 60);
3049
3050 /* decrement the node reference count held for this callback
3051 * function.
3052 */
3053 lpfc_nlp_put(ndlp);
3054 lpfc_mbuf_free(phba, mp->virt, mp->phys);
3055 kfree(mp);
3056 mempool_free(pmb, phba->mbox_mem_pool);
3057
3058 return;
3059 }
3060
3061 static int
3062 lpfc_filter_by_rpi(struct lpfc_nodelist *ndlp, void *param)
3063 {
3064 uint16_t *rpi = param;
3065
3066 return ndlp->nlp_rpi == *rpi;
3067 }
3068
3069 static int
3070 lpfc_filter_by_wwpn(struct lpfc_nodelist *ndlp, void *param)
3071 {
3072 return memcmp(&ndlp->nlp_portname, param,
3073 sizeof(ndlp->nlp_portname)) == 0;
3074 }
3075
3076 static struct lpfc_nodelist *
3077 __lpfc_find_node(struct lpfc_vport *vport, node_filter filter, void *param)
3078 {
3079 struct lpfc_nodelist *ndlp;
3080
3081 list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
3082 if (filter(ndlp, param))
3083 return ndlp;
3084 }
3085 return NULL;
3086 }
3087
3088 /*
3089 * This routine looks up the ndlp lists for the given RPI. If rpi found it
3090 * returns the node list element pointer else return NULL.
3091 */
3092 struct lpfc_nodelist *
3093 __lpfc_findnode_rpi(struct lpfc_vport *vport, uint16_t rpi)
3094 {
3095 return __lpfc_find_node(vport, lpfc_filter_by_rpi, &rpi);
3096 }
3097
3098 /*
3099 * This routine looks up the ndlp lists for the given WWPN. If WWPN found it
3100 * returns the node element list pointer else return NULL.
3101 */
3102 struct lpfc_nodelist *
3103 lpfc_findnode_wwpn(struct lpfc_vport *vport, struct lpfc_name *wwpn)
3104 {
3105 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3106 struct lpfc_nodelist *ndlp;
3107
3108 spin_lock_irq(shost->host_lock);
3109 ndlp = __lpfc_find_node(vport, lpfc_filter_by_wwpn, wwpn);
3110 spin_unlock_irq(shost->host_lock);
3111 return ndlp;
3112 }
3113
3114 void
3115 lpfc_nlp_init(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
3116 uint32_t did)
3117 {
3118 memset(ndlp, 0, sizeof (struct lpfc_nodelist));
3119 INIT_LIST_HEAD(&ndlp->els_retry_evt.evt_listp);
3120 INIT_LIST_HEAD(&ndlp->dev_loss_evt.evt_listp);
3121 init_timer(&ndlp->nlp_delayfunc);
3122 ndlp->nlp_delayfunc.function = lpfc_els_retry_delay;
3123 ndlp->nlp_delayfunc.data = (unsigned long)ndlp;
3124 ndlp->nlp_DID = did;
3125 ndlp->vport = vport;
3126 ndlp->nlp_sid = NLP_NO_SID;
3127 INIT_LIST_HEAD(&ndlp->nlp_listp);
3128 kref_init(&ndlp->kref);
3129 NLP_INT_NODE_ACT(ndlp);
3130 atomic_set(&ndlp->cmd_pending, 0);
3131 ndlp->cmd_qdepth = LPFC_MAX_TGT_QDEPTH;
3132
3133 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
3134 "node init: did:x%x",
3135 ndlp->nlp_DID, 0, 0);
3136
3137 return;
3138 }
3139
3140 /* This routine releases all resources associated with a specifc NPort's ndlp
3141 * and mempool_free's the nodelist.
3142 */
3143 static void
3144 lpfc_nlp_release(struct kref *kref)
3145 {
3146 struct lpfc_hba *phba;
3147 unsigned long flags;
3148 struct lpfc_nodelist *ndlp = container_of(kref, struct lpfc_nodelist,
3149 kref);
3150
3151 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
3152 "node release: did:x%x flg:x%x type:x%x",
3153 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
3154
3155 lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE,
3156 "0279 lpfc_nlp_release: ndlp:x%p "
3157 "usgmap:x%x refcnt:%d\n",
3158 (void *)ndlp, ndlp->nlp_usg_map,
3159 atomic_read(&ndlp->kref.refcount));
3160
3161 /* remove ndlp from action. */
3162 lpfc_nlp_remove(ndlp->vport, ndlp);
3163
3164 /* clear the ndlp active flag for all release cases */
3165 phba = ndlp->vport->phba;
3166 spin_lock_irqsave(&phba->ndlp_lock, flags);
3167 NLP_CLR_NODE_ACT(ndlp);
3168 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
3169
3170 /* free ndlp memory for final ndlp release */
3171 if (NLP_CHK_FREE_REQ(ndlp)) {
3172 kfree(ndlp->lat_data);
3173 mempool_free(ndlp, ndlp->vport->phba->nlp_mem_pool);
3174 }
3175 }
3176
3177 /* This routine bumps the reference count for a ndlp structure to ensure
3178 * that one discovery thread won't free a ndlp while another discovery thread
3179 * is using it.
3180 */
3181 struct lpfc_nodelist *
3182 lpfc_nlp_get(struct lpfc_nodelist *ndlp)
3183 {
3184 struct lpfc_hba *phba;
3185 unsigned long flags;
3186
3187 if (ndlp) {
3188 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
3189 "node get: did:x%x flg:x%x refcnt:x%x",
3190 ndlp->nlp_DID, ndlp->nlp_flag,
3191 atomic_read(&ndlp->kref.refcount));
3192 /* The check of ndlp usage to prevent incrementing the
3193 * ndlp reference count that is in the process of being
3194 * released.
3195 */
3196 phba = ndlp->vport->phba;
3197 spin_lock_irqsave(&phba->ndlp_lock, flags);
3198 if (!NLP_CHK_NODE_ACT(ndlp) || NLP_CHK_FREE_ACK(ndlp)) {
3199 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
3200 lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_NODE,
3201 "0276 lpfc_nlp_get: ndlp:x%p "
3202 "usgmap:x%x refcnt:%d\n",
3203 (void *)ndlp, ndlp->nlp_usg_map,
3204 atomic_read(&ndlp->kref.refcount));
3205 return NULL;
3206 } else
3207 kref_get(&ndlp->kref);
3208 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
3209 }
3210 return ndlp;
3211 }
3212
3213 /* This routine decrements the reference count for a ndlp structure. If the
3214 * count goes to 0, this indicates the the associated nodelist should be
3215 * freed. Returning 1 indicates the ndlp resource has been released; on the
3216 * other hand, returning 0 indicates the ndlp resource has not been released
3217 * yet.
3218 */
3219 int
3220 lpfc_nlp_put(struct lpfc_nodelist *ndlp)
3221 {
3222 struct lpfc_hba *phba;
3223 unsigned long flags;
3224
3225 if (!ndlp)
3226 return 1;
3227
3228 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
3229 "node put: did:x%x flg:x%x refcnt:x%x",
3230 ndlp->nlp_DID, ndlp->nlp_flag,
3231 atomic_read(&ndlp->kref.refcount));
3232 phba = ndlp->vport->phba;
3233 spin_lock_irqsave(&phba->ndlp_lock, flags);
3234 /* Check the ndlp memory free acknowledge flag to avoid the
3235 * possible race condition that kref_put got invoked again
3236 * after previous one has done ndlp memory free.
3237 */
3238 if (NLP_CHK_FREE_ACK(ndlp)) {
3239 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
3240 lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_NODE,
3241 "0274 lpfc_nlp_put: ndlp:x%p "
3242 "usgmap:x%x refcnt:%d\n",
3243 (void *)ndlp, ndlp->nlp_usg_map,
3244 atomic_read(&ndlp->kref.refcount));
3245 return 1;
3246 }
3247 /* Check the ndlp inactivate log flag to avoid the possible
3248 * race condition that kref_put got invoked again after ndlp
3249 * is already in inactivating state.
3250 */
3251 if (NLP_CHK_IACT_REQ(ndlp)) {
3252 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
3253 lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_NODE,
3254 "0275 lpfc_nlp_put: ndlp:x%p "
3255 "usgmap:x%x refcnt:%d\n",
3256 (void *)ndlp, ndlp->nlp_usg_map,
3257 atomic_read(&ndlp->kref.refcount));
3258 return 1;
3259 }
3260 /* For last put, mark the ndlp usage flags to make sure no
3261 * other kref_get and kref_put on the same ndlp shall get
3262 * in between the process when the final kref_put has been
3263 * invoked on this ndlp.
3264 */
3265 if (atomic_read(&ndlp->kref.refcount) == 1) {
3266 /* Indicate ndlp is put to inactive state. */
3267 NLP_SET_IACT_REQ(ndlp);
3268 /* Acknowledge ndlp memory free has been seen. */
3269 if (NLP_CHK_FREE_REQ(ndlp))
3270 NLP_SET_FREE_ACK(ndlp);
3271 }
3272 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
3273 /* Note, the kref_put returns 1 when decrementing a reference
3274 * count that was 1, it invokes the release callback function,
3275 * but it still left the reference count as 1 (not actually
3276 * performs the last decrementation). Otherwise, it actually
3277 * decrements the reference count and returns 0.
3278 */
3279 return kref_put(&ndlp->kref, lpfc_nlp_release);
3280 }
3281
3282 /* This routine free's the specified nodelist if it is not in use
3283 * by any other discovery thread. This routine returns 1 if the
3284 * ndlp has been freed. A return value of 0 indicates the ndlp is
3285 * not yet been released.
3286 */
3287 int
3288 lpfc_nlp_not_used(struct lpfc_nodelist *ndlp)
3289 {
3290 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
3291 "node not used: did:x%x flg:x%x refcnt:x%x",
3292 ndlp->nlp_DID, ndlp->nlp_flag,
3293 atomic_read(&ndlp->kref.refcount));
3294 if (atomic_read(&ndlp->kref.refcount) == 1)
3295 if (lpfc_nlp_put(ndlp))
3296 return 1;
3297 return 0;
3298 }
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