mic: vop: Fix use-after-free on remove
[linux/fpc-iii.git] / drivers / scsi / lpfc / lpfc_hbadisc.c
blobb183b882d50677ed8dab2c5c3ee0d1e88d9e8e7d
1 /*******************************************************************
2 * This file is part of the Emulex Linux Device Driver for *
3 * Fibre Channel Host Bus Adapters. *
4 * Copyright (C) 2017-2018 Broadcom. All Rights Reserved. The term *
5 * “Broadcom” refers to Broadcom Inc. and/or its subsidiaries. *
6 * Copyright (C) 2004-2016 Emulex. All rights reserved. *
7 * EMULEX and SLI are trademarks of Emulex. *
8 * www.broadcom.com *
9 * Portions Copyright (C) 2004-2005 Christoph Hellwig *
10 * *
11 * This program is free software; you can redistribute it and/or *
12 * modify it under the terms of version 2 of the GNU General *
13 * Public License as published by the Free Software Foundation. *
14 * This program is distributed in the hope that it will be useful. *
15 * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND *
16 * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, *
17 * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE *
18 * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *
19 * TO BE LEGALLY INVALID. See the GNU General Public License for *
20 * more details, a copy of which can be found in the file COPYING *
21 * included with this package. *
22 *******************************************************************/
24 #include <linux/blkdev.h>
25 #include <linux/delay.h>
26 #include <linux/slab.h>
27 #include <linux/pci.h>
28 #include <linux/kthread.h>
29 #include <linux/interrupt.h>
30 #include <linux/lockdep.h>
32 #include <scsi/scsi.h>
33 #include <scsi/scsi_device.h>
34 #include <scsi/scsi_host.h>
35 #include <scsi/scsi_transport_fc.h>
36 #include <scsi/fc/fc_fs.h>
38 #include <linux/nvme-fc-driver.h>
40 #include "lpfc_hw4.h"
41 #include "lpfc_hw.h"
42 #include "lpfc_nl.h"
43 #include "lpfc_disc.h"
44 #include "lpfc_sli.h"
45 #include "lpfc_sli4.h"
46 #include "lpfc.h"
47 #include "lpfc_scsi.h"
48 #include "lpfc_nvme.h"
49 #include "lpfc_logmsg.h"
50 #include "lpfc_crtn.h"
51 #include "lpfc_vport.h"
52 #include "lpfc_debugfs.h"
54 /* AlpaArray for assignment of scsid for scan-down and bind_method */
55 static uint8_t lpfcAlpaArray[] = {
56 0xEF, 0xE8, 0xE4, 0xE2, 0xE1, 0xE0, 0xDC, 0xDA, 0xD9, 0xD6,
57 0xD5, 0xD4, 0xD3, 0xD2, 0xD1, 0xCE, 0xCD, 0xCC, 0xCB, 0xCA,
58 0xC9, 0xC7, 0xC6, 0xC5, 0xC3, 0xBC, 0xBA, 0xB9, 0xB6, 0xB5,
59 0xB4, 0xB3, 0xB2, 0xB1, 0xAE, 0xAD, 0xAC, 0xAB, 0xAA, 0xA9,
60 0xA7, 0xA6, 0xA5, 0xA3, 0x9F, 0x9E, 0x9D, 0x9B, 0x98, 0x97,
61 0x90, 0x8F, 0x88, 0x84, 0x82, 0x81, 0x80, 0x7C, 0x7A, 0x79,
62 0x76, 0x75, 0x74, 0x73, 0x72, 0x71, 0x6E, 0x6D, 0x6C, 0x6B,
63 0x6A, 0x69, 0x67, 0x66, 0x65, 0x63, 0x5C, 0x5A, 0x59, 0x56,
64 0x55, 0x54, 0x53, 0x52, 0x51, 0x4E, 0x4D, 0x4C, 0x4B, 0x4A,
65 0x49, 0x47, 0x46, 0x45, 0x43, 0x3C, 0x3A, 0x39, 0x36, 0x35,
66 0x34, 0x33, 0x32, 0x31, 0x2E, 0x2D, 0x2C, 0x2B, 0x2A, 0x29,
67 0x27, 0x26, 0x25, 0x23, 0x1F, 0x1E, 0x1D, 0x1B, 0x18, 0x17,
68 0x10, 0x0F, 0x08, 0x04, 0x02, 0x01
71 static void lpfc_disc_timeout_handler(struct lpfc_vport *);
72 static void lpfc_disc_flush_list(struct lpfc_vport *vport);
73 static void lpfc_unregister_fcfi_cmpl(struct lpfc_hba *, LPFC_MBOXQ_t *);
74 static int lpfc_fcf_inuse(struct lpfc_hba *);
76 void
77 lpfc_terminate_rport_io(struct fc_rport *rport)
79 struct lpfc_rport_data *rdata;
80 struct lpfc_nodelist * ndlp;
81 struct lpfc_hba *phba;
83 rdata = rport->dd_data;
84 ndlp = rdata->pnode;
86 if (!ndlp || !NLP_CHK_NODE_ACT(ndlp)) {
87 if (rport->roles & FC_RPORT_ROLE_FCP_TARGET)
88 printk(KERN_ERR "Cannot find remote node"
89 " to terminate I/O Data x%x\n",
90 rport->port_id);
91 return;
94 phba = ndlp->phba;
96 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_RPORT,
97 "rport terminate: sid:x%x did:x%x flg:x%x",
98 ndlp->nlp_sid, ndlp->nlp_DID, ndlp->nlp_flag);
100 if (ndlp->nlp_sid != NLP_NO_SID) {
101 lpfc_sli_abort_iocb(ndlp->vport,
102 &phba->sli.sli3_ring[LPFC_FCP_RING],
103 ndlp->nlp_sid, 0, LPFC_CTX_TGT);
108 * This function will be called when dev_loss_tmo fire.
110 void
111 lpfc_dev_loss_tmo_callbk(struct fc_rport *rport)
113 struct lpfc_rport_data *rdata;
114 struct lpfc_nodelist * ndlp;
115 struct lpfc_vport *vport;
116 struct Scsi_Host *shost;
117 struct lpfc_hba *phba;
118 struct lpfc_work_evt *evtp;
119 int put_node;
120 int put_rport;
122 rdata = rport->dd_data;
123 ndlp = rdata->pnode;
124 if (!ndlp || !NLP_CHK_NODE_ACT(ndlp))
125 return;
127 vport = ndlp->vport;
128 phba = vport->phba;
130 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
131 "rport devlosscb: sid:x%x did:x%x flg:x%x",
132 ndlp->nlp_sid, ndlp->nlp_DID, ndlp->nlp_flag);
134 lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE,
135 "3181 dev_loss_callbk x%06x, rport %p flg x%x\n",
136 ndlp->nlp_DID, ndlp->rport, ndlp->nlp_flag);
138 /* Don't defer this if we are in the process of deleting the vport
139 * or unloading the driver. The unload will cleanup the node
140 * appropriately we just need to cleanup the ndlp rport info here.
142 if (vport->load_flag & FC_UNLOADING) {
143 put_node = rdata->pnode != NULL;
144 put_rport = ndlp->rport != NULL;
145 rdata->pnode = NULL;
146 ndlp->rport = NULL;
147 if (put_node)
148 lpfc_nlp_put(ndlp);
149 if (put_rport)
150 put_device(&rport->dev);
151 return;
154 if (ndlp->nlp_state == NLP_STE_MAPPED_NODE)
155 return;
157 if (rport->port_name != wwn_to_u64(ndlp->nlp_portname.u.wwn))
158 lpfc_printf_vlog(vport, KERN_ERR, LOG_NODE,
159 "6789 rport name %llx != node port name %llx",
160 rport->port_name,
161 wwn_to_u64(ndlp->nlp_portname.u.wwn));
163 evtp = &ndlp->dev_loss_evt;
165 if (!list_empty(&evtp->evt_listp)) {
166 lpfc_printf_vlog(vport, KERN_ERR, LOG_NODE,
167 "6790 rport name %llx dev_loss_evt pending",
168 rport->port_name);
169 return;
172 shost = lpfc_shost_from_vport(vport);
173 spin_lock_irq(shost->host_lock);
174 ndlp->nlp_flag |= NLP_IN_DEV_LOSS;
175 spin_unlock_irq(shost->host_lock);
177 /* We need to hold the node by incrementing the reference
178 * count until this queued work is done
180 evtp->evt_arg1 = lpfc_nlp_get(ndlp);
182 spin_lock_irq(&phba->hbalock);
183 if (evtp->evt_arg1) {
184 evtp->evt = LPFC_EVT_DEV_LOSS;
185 list_add_tail(&evtp->evt_listp, &phba->work_list);
186 lpfc_worker_wake_up(phba);
188 spin_unlock_irq(&phba->hbalock);
190 return;
194 * lpfc_dev_loss_tmo_handler - Remote node devloss timeout handler
195 * @ndlp: Pointer to remote node object.
197 * This function is called from the worker thread when devloss timeout timer
198 * expires. For SLI4 host, this routine shall return 1 when at lease one
199 * remote node, including this @ndlp, is still in use of FCF; otherwise, this
200 * routine shall return 0 when there is no remote node is still in use of FCF
201 * when devloss timeout happened to this @ndlp.
203 static int
204 lpfc_dev_loss_tmo_handler(struct lpfc_nodelist *ndlp)
206 struct lpfc_rport_data *rdata;
207 struct fc_rport *rport;
208 struct lpfc_vport *vport;
209 struct lpfc_hba *phba;
210 struct Scsi_Host *shost;
211 uint8_t *name;
212 int put_node;
213 int warn_on = 0;
214 int fcf_inuse = 0;
216 rport = ndlp->rport;
217 vport = ndlp->vport;
218 shost = lpfc_shost_from_vport(vport);
220 spin_lock_irq(shost->host_lock);
221 ndlp->nlp_flag &= ~NLP_IN_DEV_LOSS;
222 spin_unlock_irq(shost->host_lock);
224 if (!rport)
225 return fcf_inuse;
227 name = (uint8_t *) &ndlp->nlp_portname;
228 phba = vport->phba;
230 if (phba->sli_rev == LPFC_SLI_REV4)
231 fcf_inuse = lpfc_fcf_inuse(phba);
233 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
234 "rport devlosstmo:did:x%x type:x%x id:x%x",
235 ndlp->nlp_DID, ndlp->nlp_type, rport->scsi_target_id);
237 lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE,
238 "3182 dev_loss_tmo_handler x%06x, rport %p flg x%x\n",
239 ndlp->nlp_DID, ndlp->rport, ndlp->nlp_flag);
242 * lpfc_nlp_remove if reached with dangling rport drops the
243 * reference. To make sure that does not happen clear rport
244 * pointer in ndlp before lpfc_nlp_put.
246 rdata = rport->dd_data;
248 /* Don't defer this if we are in the process of deleting the vport
249 * or unloading the driver. The unload will cleanup the node
250 * appropriately we just need to cleanup the ndlp rport info here.
252 if (vport->load_flag & FC_UNLOADING) {
253 if (ndlp->nlp_sid != NLP_NO_SID) {
254 /* flush the target */
255 lpfc_sli_abort_iocb(vport,
256 &phba->sli.sli3_ring[LPFC_FCP_RING],
257 ndlp->nlp_sid, 0, LPFC_CTX_TGT);
259 put_node = rdata->pnode != NULL;
260 rdata->pnode = NULL;
261 ndlp->rport = NULL;
262 if (put_node)
263 lpfc_nlp_put(ndlp);
264 put_device(&rport->dev);
266 return fcf_inuse;
269 if (ndlp->nlp_state == NLP_STE_MAPPED_NODE) {
270 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
271 "0284 Devloss timeout Ignored on "
272 "WWPN %x:%x:%x:%x:%x:%x:%x:%x "
273 "NPort x%x\n",
274 *name, *(name+1), *(name+2), *(name+3),
275 *(name+4), *(name+5), *(name+6), *(name+7),
276 ndlp->nlp_DID);
277 return fcf_inuse;
280 put_node = rdata->pnode != NULL;
281 rdata->pnode = NULL;
282 ndlp->rport = NULL;
283 if (put_node)
284 lpfc_nlp_put(ndlp);
285 put_device(&rport->dev);
287 if (ndlp->nlp_type & NLP_FABRIC)
288 return fcf_inuse;
290 if (ndlp->nlp_sid != NLP_NO_SID) {
291 warn_on = 1;
292 lpfc_sli_abort_iocb(vport, &phba->sli.sli3_ring[LPFC_FCP_RING],
293 ndlp->nlp_sid, 0, LPFC_CTX_TGT);
296 if (warn_on) {
297 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
298 "0203 Devloss timeout on "
299 "WWPN %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x "
300 "NPort x%06x Data: x%x x%x x%x\n",
301 *name, *(name+1), *(name+2), *(name+3),
302 *(name+4), *(name+5), *(name+6), *(name+7),
303 ndlp->nlp_DID, ndlp->nlp_flag,
304 ndlp->nlp_state, ndlp->nlp_rpi);
305 } else {
306 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
307 "0204 Devloss timeout on "
308 "WWPN %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x "
309 "NPort x%06x Data: x%x x%x x%x\n",
310 *name, *(name+1), *(name+2), *(name+3),
311 *(name+4), *(name+5), *(name+6), *(name+7),
312 ndlp->nlp_DID, ndlp->nlp_flag,
313 ndlp->nlp_state, ndlp->nlp_rpi);
316 if (!(ndlp->nlp_flag & NLP_DELAY_TMO) &&
317 !(ndlp->nlp_flag & NLP_NPR_2B_DISC) &&
318 (ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) &&
319 (ndlp->nlp_state != NLP_STE_REG_LOGIN_ISSUE) &&
320 (ndlp->nlp_state != NLP_STE_PRLI_ISSUE))
321 lpfc_disc_state_machine(vport, ndlp, NULL, NLP_EVT_DEVICE_RM);
323 return fcf_inuse;
327 * lpfc_sli4_post_dev_loss_tmo_handler - SLI4 post devloss timeout handler
328 * @phba: Pointer to hba context object.
329 * @fcf_inuse: SLI4 FCF in-use state reported from devloss timeout handler.
330 * @nlp_did: remote node identifer with devloss timeout.
332 * This function is called from the worker thread after invoking devloss
333 * timeout handler and releasing the reference count for the ndlp with
334 * which the devloss timeout was handled for SLI4 host. For the devloss
335 * timeout of the last remote node which had been in use of FCF, when this
336 * routine is invoked, it shall be guaranteed that none of the remote are
337 * in-use of FCF. When devloss timeout to the last remote using the FCF,
338 * if the FIP engine is neither in FCF table scan process nor roundrobin
339 * failover process, the in-use FCF shall be unregistered. If the FIP
340 * engine is in FCF discovery process, the devloss timeout state shall
341 * be set for either the FCF table scan process or roundrobin failover
342 * process to unregister the in-use FCF.
344 static void
345 lpfc_sli4_post_dev_loss_tmo_handler(struct lpfc_hba *phba, int fcf_inuse,
346 uint32_t nlp_did)
348 /* If devloss timeout happened to a remote node when FCF had no
349 * longer been in-use, do nothing.
351 if (!fcf_inuse)
352 return;
354 if ((phba->hba_flag & HBA_FIP_SUPPORT) && !lpfc_fcf_inuse(phba)) {
355 spin_lock_irq(&phba->hbalock);
356 if (phba->fcf.fcf_flag & FCF_DISCOVERY) {
357 if (phba->hba_flag & HBA_DEVLOSS_TMO) {
358 spin_unlock_irq(&phba->hbalock);
359 return;
361 phba->hba_flag |= HBA_DEVLOSS_TMO;
362 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
363 "2847 Last remote node (x%x) using "
364 "FCF devloss tmo\n", nlp_did);
366 if (phba->fcf.fcf_flag & FCF_REDISC_PROG) {
367 spin_unlock_irq(&phba->hbalock);
368 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
369 "2868 Devloss tmo to FCF rediscovery "
370 "in progress\n");
371 return;
373 if (!(phba->hba_flag & (FCF_TS_INPROG | FCF_RR_INPROG))) {
374 spin_unlock_irq(&phba->hbalock);
375 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
376 "2869 Devloss tmo to idle FIP engine, "
377 "unreg in-use FCF and rescan.\n");
378 /* Unregister in-use FCF and rescan */
379 lpfc_unregister_fcf_rescan(phba);
380 return;
382 spin_unlock_irq(&phba->hbalock);
383 if (phba->hba_flag & FCF_TS_INPROG)
384 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
385 "2870 FCF table scan in progress\n");
386 if (phba->hba_flag & FCF_RR_INPROG)
387 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
388 "2871 FLOGI roundrobin FCF failover "
389 "in progress\n");
391 lpfc_unregister_unused_fcf(phba);
395 * lpfc_alloc_fast_evt - Allocates data structure for posting event
396 * @phba: Pointer to hba context object.
398 * This function is called from the functions which need to post
399 * events from interrupt context. This function allocates data
400 * structure required for posting event. It also keeps track of
401 * number of events pending and prevent event storm when there are
402 * too many events.
404 struct lpfc_fast_path_event *
405 lpfc_alloc_fast_evt(struct lpfc_hba *phba) {
406 struct lpfc_fast_path_event *ret;
408 /* If there are lot of fast event do not exhaust memory due to this */
409 if (atomic_read(&phba->fast_event_count) > LPFC_MAX_EVT_COUNT)
410 return NULL;
412 ret = kzalloc(sizeof(struct lpfc_fast_path_event),
413 GFP_ATOMIC);
414 if (ret) {
415 atomic_inc(&phba->fast_event_count);
416 INIT_LIST_HEAD(&ret->work_evt.evt_listp);
417 ret->work_evt.evt = LPFC_EVT_FASTPATH_MGMT_EVT;
419 return ret;
423 * lpfc_free_fast_evt - Frees event data structure
424 * @phba: Pointer to hba context object.
425 * @evt: Event object which need to be freed.
427 * This function frees the data structure required for posting
428 * events.
430 void
431 lpfc_free_fast_evt(struct lpfc_hba *phba,
432 struct lpfc_fast_path_event *evt) {
434 atomic_dec(&phba->fast_event_count);
435 kfree(evt);
439 * lpfc_send_fastpath_evt - Posts events generated from fast path
440 * @phba: Pointer to hba context object.
441 * @evtp: Event data structure.
443 * This function is called from worker thread, when the interrupt
444 * context need to post an event. This function posts the event
445 * to fc transport netlink interface.
447 static void
448 lpfc_send_fastpath_evt(struct lpfc_hba *phba,
449 struct lpfc_work_evt *evtp)
451 unsigned long evt_category, evt_sub_category;
452 struct lpfc_fast_path_event *fast_evt_data;
453 char *evt_data;
454 uint32_t evt_data_size;
455 struct Scsi_Host *shost;
457 fast_evt_data = container_of(evtp, struct lpfc_fast_path_event,
458 work_evt);
460 evt_category = (unsigned long) fast_evt_data->un.fabric_evt.event_type;
461 evt_sub_category = (unsigned long) fast_evt_data->un.
462 fabric_evt.subcategory;
463 shost = lpfc_shost_from_vport(fast_evt_data->vport);
464 if (evt_category == FC_REG_FABRIC_EVENT) {
465 if (evt_sub_category == LPFC_EVENT_FCPRDCHKERR) {
466 evt_data = (char *) &fast_evt_data->un.read_check_error;
467 evt_data_size = sizeof(fast_evt_data->un.
468 read_check_error);
469 } else if ((evt_sub_category == LPFC_EVENT_FABRIC_BUSY) ||
470 (evt_sub_category == LPFC_EVENT_PORT_BUSY)) {
471 evt_data = (char *) &fast_evt_data->un.fabric_evt;
472 evt_data_size = sizeof(fast_evt_data->un.fabric_evt);
473 } else {
474 lpfc_free_fast_evt(phba, fast_evt_data);
475 return;
477 } else if (evt_category == FC_REG_SCSI_EVENT) {
478 switch (evt_sub_category) {
479 case LPFC_EVENT_QFULL:
480 case LPFC_EVENT_DEVBSY:
481 evt_data = (char *) &fast_evt_data->un.scsi_evt;
482 evt_data_size = sizeof(fast_evt_data->un.scsi_evt);
483 break;
484 case LPFC_EVENT_CHECK_COND:
485 evt_data = (char *) &fast_evt_data->un.check_cond_evt;
486 evt_data_size = sizeof(fast_evt_data->un.
487 check_cond_evt);
488 break;
489 case LPFC_EVENT_VARQUEDEPTH:
490 evt_data = (char *) &fast_evt_data->un.queue_depth_evt;
491 evt_data_size = sizeof(fast_evt_data->un.
492 queue_depth_evt);
493 break;
494 default:
495 lpfc_free_fast_evt(phba, fast_evt_data);
496 return;
498 } else {
499 lpfc_free_fast_evt(phba, fast_evt_data);
500 return;
503 if (phba->cfg_enable_fc4_type != LPFC_ENABLE_NVME)
504 fc_host_post_vendor_event(shost,
505 fc_get_event_number(),
506 evt_data_size,
507 evt_data,
508 LPFC_NL_VENDOR_ID);
510 lpfc_free_fast_evt(phba, fast_evt_data);
511 return;
514 static void
515 lpfc_work_list_done(struct lpfc_hba *phba)
517 struct lpfc_work_evt *evtp = NULL;
518 struct lpfc_nodelist *ndlp;
519 int free_evt;
520 int fcf_inuse;
521 uint32_t nlp_did;
523 spin_lock_irq(&phba->hbalock);
524 while (!list_empty(&phba->work_list)) {
525 list_remove_head((&phba->work_list), evtp, typeof(*evtp),
526 evt_listp);
527 spin_unlock_irq(&phba->hbalock);
528 free_evt = 1;
529 switch (evtp->evt) {
530 case LPFC_EVT_ELS_RETRY:
531 ndlp = (struct lpfc_nodelist *) (evtp->evt_arg1);
532 lpfc_els_retry_delay_handler(ndlp);
533 free_evt = 0; /* evt is part of ndlp */
534 /* decrement the node reference count held
535 * for this queued work
537 lpfc_nlp_put(ndlp);
538 break;
539 case LPFC_EVT_DEV_LOSS:
540 ndlp = (struct lpfc_nodelist *)(evtp->evt_arg1);
541 fcf_inuse = lpfc_dev_loss_tmo_handler(ndlp);
542 free_evt = 0;
543 /* decrement the node reference count held for
544 * this queued work
546 nlp_did = ndlp->nlp_DID;
547 lpfc_nlp_put(ndlp);
548 if (phba->sli_rev == LPFC_SLI_REV4)
549 lpfc_sli4_post_dev_loss_tmo_handler(phba,
550 fcf_inuse,
551 nlp_did);
552 break;
553 case LPFC_EVT_ONLINE:
554 if (phba->link_state < LPFC_LINK_DOWN)
555 *(int *) (evtp->evt_arg1) = lpfc_online(phba);
556 else
557 *(int *) (evtp->evt_arg1) = 0;
558 complete((struct completion *)(evtp->evt_arg2));
559 break;
560 case LPFC_EVT_OFFLINE_PREP:
561 if (phba->link_state >= LPFC_LINK_DOWN)
562 lpfc_offline_prep(phba, LPFC_MBX_WAIT);
563 *(int *)(evtp->evt_arg1) = 0;
564 complete((struct completion *)(evtp->evt_arg2));
565 break;
566 case LPFC_EVT_OFFLINE:
567 lpfc_offline(phba);
568 lpfc_sli_brdrestart(phba);
569 *(int *)(evtp->evt_arg1) =
570 lpfc_sli_brdready(phba, HS_FFRDY | HS_MBRDY);
571 lpfc_unblock_mgmt_io(phba);
572 complete((struct completion *)(evtp->evt_arg2));
573 break;
574 case LPFC_EVT_WARM_START:
575 lpfc_offline(phba);
576 lpfc_reset_barrier(phba);
577 lpfc_sli_brdreset(phba);
578 lpfc_hba_down_post(phba);
579 *(int *)(evtp->evt_arg1) =
580 lpfc_sli_brdready(phba, HS_MBRDY);
581 lpfc_unblock_mgmt_io(phba);
582 complete((struct completion *)(evtp->evt_arg2));
583 break;
584 case LPFC_EVT_KILL:
585 lpfc_offline(phba);
586 *(int *)(evtp->evt_arg1)
587 = (phba->pport->stopped)
588 ? 0 : lpfc_sli_brdkill(phba);
589 lpfc_unblock_mgmt_io(phba);
590 complete((struct completion *)(evtp->evt_arg2));
591 break;
592 case LPFC_EVT_FASTPATH_MGMT_EVT:
593 lpfc_send_fastpath_evt(phba, evtp);
594 free_evt = 0;
595 break;
596 case LPFC_EVT_RESET_HBA:
597 if (!(phba->pport->load_flag & FC_UNLOADING))
598 lpfc_reset_hba(phba);
599 break;
601 if (free_evt)
602 kfree(evtp);
603 spin_lock_irq(&phba->hbalock);
605 spin_unlock_irq(&phba->hbalock);
609 static void
610 lpfc_work_done(struct lpfc_hba *phba)
612 struct lpfc_sli_ring *pring;
613 uint32_t ha_copy, status, control, work_port_events;
614 struct lpfc_vport **vports;
615 struct lpfc_vport *vport;
616 int i;
618 spin_lock_irq(&phba->hbalock);
619 ha_copy = phba->work_ha;
620 phba->work_ha = 0;
621 spin_unlock_irq(&phba->hbalock);
623 /* First, try to post the next mailbox command to SLI4 device */
624 if (phba->pci_dev_grp == LPFC_PCI_DEV_OC)
625 lpfc_sli4_post_async_mbox(phba);
627 if (ha_copy & HA_ERATT)
628 /* Handle the error attention event */
629 lpfc_handle_eratt(phba);
631 if (ha_copy & HA_MBATT)
632 lpfc_sli_handle_mb_event(phba);
634 if (ha_copy & HA_LATT)
635 lpfc_handle_latt(phba);
637 /* Process SLI4 events */
638 if (phba->pci_dev_grp == LPFC_PCI_DEV_OC) {
639 if (phba->hba_flag & HBA_RRQ_ACTIVE)
640 lpfc_handle_rrq_active(phba);
641 if (phba->hba_flag & FCP_XRI_ABORT_EVENT)
642 lpfc_sli4_fcp_xri_abort_event_proc(phba);
643 if (phba->hba_flag & ELS_XRI_ABORT_EVENT)
644 lpfc_sli4_els_xri_abort_event_proc(phba);
645 if (phba->hba_flag & ASYNC_EVENT)
646 lpfc_sli4_async_event_proc(phba);
647 if (phba->hba_flag & HBA_POST_RECEIVE_BUFFER) {
648 spin_lock_irq(&phba->hbalock);
649 phba->hba_flag &= ~HBA_POST_RECEIVE_BUFFER;
650 spin_unlock_irq(&phba->hbalock);
651 lpfc_sli_hbqbuf_add_hbqs(phba, LPFC_ELS_HBQ);
653 if (phba->fcf.fcf_flag & FCF_REDISC_EVT)
654 lpfc_sli4_fcf_redisc_event_proc(phba);
657 vports = lpfc_create_vport_work_array(phba);
658 if (vports != NULL)
659 for (i = 0; i <= phba->max_vports; i++) {
661 * We could have no vports in array if unloading, so if
662 * this happens then just use the pport
664 if (vports[i] == NULL && i == 0)
665 vport = phba->pport;
666 else
667 vport = vports[i];
668 if (vport == NULL)
669 break;
670 spin_lock_irq(&vport->work_port_lock);
671 work_port_events = vport->work_port_events;
672 vport->work_port_events &= ~work_port_events;
673 spin_unlock_irq(&vport->work_port_lock);
674 if (work_port_events & WORKER_DISC_TMO)
675 lpfc_disc_timeout_handler(vport);
676 if (work_port_events & WORKER_ELS_TMO)
677 lpfc_els_timeout_handler(vport);
678 if (work_port_events & WORKER_HB_TMO)
679 lpfc_hb_timeout_handler(phba);
680 if (work_port_events & WORKER_MBOX_TMO)
681 lpfc_mbox_timeout_handler(phba);
682 if (work_port_events & WORKER_FABRIC_BLOCK_TMO)
683 lpfc_unblock_fabric_iocbs(phba);
684 if (work_port_events & WORKER_RAMP_DOWN_QUEUE)
685 lpfc_ramp_down_queue_handler(phba);
686 if (work_port_events & WORKER_DELAYED_DISC_TMO)
687 lpfc_delayed_disc_timeout_handler(vport);
689 lpfc_destroy_vport_work_array(phba, vports);
691 pring = lpfc_phba_elsring(phba);
692 status = (ha_copy & (HA_RXMASK << (4*LPFC_ELS_RING)));
693 status >>= (4*LPFC_ELS_RING);
694 if (pring && (status & HA_RXMASK ||
695 pring->flag & LPFC_DEFERRED_RING_EVENT ||
696 phba->hba_flag & HBA_SP_QUEUE_EVT)) {
697 if (pring->flag & LPFC_STOP_IOCB_EVENT) {
698 pring->flag |= LPFC_DEFERRED_RING_EVENT;
699 /* Preserve legacy behavior. */
700 if (!(phba->hba_flag & HBA_SP_QUEUE_EVT))
701 set_bit(LPFC_DATA_READY, &phba->data_flags);
702 } else {
703 if (phba->link_state >= LPFC_LINK_UP ||
704 phba->link_flag & LS_MDS_LOOPBACK) {
705 pring->flag &= ~LPFC_DEFERRED_RING_EVENT;
706 lpfc_sli_handle_slow_ring_event(phba, pring,
707 (status &
708 HA_RXMASK));
711 if (phba->sli_rev == LPFC_SLI_REV4)
712 lpfc_drain_txq(phba);
714 * Turn on Ring interrupts
716 if (phba->sli_rev <= LPFC_SLI_REV3) {
717 spin_lock_irq(&phba->hbalock);
718 control = readl(phba->HCregaddr);
719 if (!(control & (HC_R0INT_ENA << LPFC_ELS_RING))) {
720 lpfc_debugfs_slow_ring_trc(phba,
721 "WRK Enable ring: cntl:x%x hacopy:x%x",
722 control, ha_copy, 0);
724 control |= (HC_R0INT_ENA << LPFC_ELS_RING);
725 writel(control, phba->HCregaddr);
726 readl(phba->HCregaddr); /* flush */
727 } else {
728 lpfc_debugfs_slow_ring_trc(phba,
729 "WRK Ring ok: cntl:x%x hacopy:x%x",
730 control, ha_copy, 0);
732 spin_unlock_irq(&phba->hbalock);
735 lpfc_work_list_done(phba);
739 lpfc_do_work(void *p)
741 struct lpfc_hba *phba = p;
742 int rc;
744 set_user_nice(current, MIN_NICE);
745 current->flags |= PF_NOFREEZE;
746 phba->data_flags = 0;
748 while (!kthread_should_stop()) {
749 /* wait and check worker queue activities */
750 rc = wait_event_interruptible(phba->work_waitq,
751 (test_and_clear_bit(LPFC_DATA_READY,
752 &phba->data_flags)
753 || kthread_should_stop()));
754 /* Signal wakeup shall terminate the worker thread */
755 if (rc) {
756 lpfc_printf_log(phba, KERN_ERR, LOG_ELS,
757 "0433 Wakeup on signal: rc=x%x\n", rc);
758 break;
761 /* Attend pending lpfc data processing */
762 lpfc_work_done(phba);
764 phba->worker_thread = NULL;
765 lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
766 "0432 Worker thread stopped.\n");
767 return 0;
771 * This is only called to handle FC worker events. Since this a rare
772 * occurrence, we allocate a struct lpfc_work_evt structure here instead of
773 * embedding it in the IOCB.
776 lpfc_workq_post_event(struct lpfc_hba *phba, void *arg1, void *arg2,
777 uint32_t evt)
779 struct lpfc_work_evt *evtp;
780 unsigned long flags;
783 * All Mailbox completions and LPFC_ELS_RING rcv ring IOCB events will
784 * be queued to worker thread for processing
786 evtp = kmalloc(sizeof(struct lpfc_work_evt), GFP_ATOMIC);
787 if (!evtp)
788 return 0;
790 evtp->evt_arg1 = arg1;
791 evtp->evt_arg2 = arg2;
792 evtp->evt = evt;
794 spin_lock_irqsave(&phba->hbalock, flags);
795 list_add_tail(&evtp->evt_listp, &phba->work_list);
796 spin_unlock_irqrestore(&phba->hbalock, flags);
798 lpfc_worker_wake_up(phba);
800 return 1;
803 void
804 lpfc_cleanup_rpis(struct lpfc_vport *vport, int remove)
806 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
807 struct lpfc_hba *phba = vport->phba;
808 struct lpfc_nodelist *ndlp, *next_ndlp;
810 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) {
811 if (!NLP_CHK_NODE_ACT(ndlp))
812 continue;
813 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
814 continue;
815 if ((phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN) ||
816 ((vport->port_type == LPFC_NPIV_PORT) &&
817 (ndlp->nlp_DID == NameServer_DID)))
818 lpfc_unreg_rpi(vport, ndlp);
820 /* Leave Fabric nodes alone on link down */
821 if ((phba->sli_rev < LPFC_SLI_REV4) &&
822 (!remove && ndlp->nlp_type & NLP_FABRIC))
823 continue;
824 lpfc_disc_state_machine(vport, ndlp, NULL,
825 remove
826 ? NLP_EVT_DEVICE_RM
827 : NLP_EVT_DEVICE_RECOVERY);
829 if (phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN) {
830 if (phba->sli_rev == LPFC_SLI_REV4)
831 lpfc_sli4_unreg_all_rpis(vport);
832 lpfc_mbx_unreg_vpi(vport);
833 spin_lock_irq(shost->host_lock);
834 vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
835 spin_unlock_irq(shost->host_lock);
839 void
840 lpfc_port_link_failure(struct lpfc_vport *vport)
842 lpfc_vport_set_state(vport, FC_VPORT_LINKDOWN);
844 /* Cleanup any outstanding received buffers */
845 lpfc_cleanup_rcv_buffers(vport);
847 /* Cleanup any outstanding RSCN activity */
848 lpfc_els_flush_rscn(vport);
850 /* Cleanup any outstanding ELS commands */
851 lpfc_els_flush_cmd(vport);
853 lpfc_cleanup_rpis(vport, 0);
855 /* Turn off discovery timer if its running */
856 lpfc_can_disctmo(vport);
859 void
860 lpfc_linkdown_port(struct lpfc_vport *vport)
862 struct lpfc_hba *phba = vport->phba;
863 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
865 if (phba->cfg_enable_fc4_type != LPFC_ENABLE_NVME)
866 fc_host_post_event(shost, fc_get_event_number(),
867 FCH_EVT_LINKDOWN, 0);
869 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
870 "Link Down: state:x%x rtry:x%x flg:x%x",
871 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
873 lpfc_port_link_failure(vport);
875 /* Stop delayed Nport discovery */
876 spin_lock_irq(shost->host_lock);
877 vport->fc_flag &= ~FC_DISC_DELAYED;
878 spin_unlock_irq(shost->host_lock);
879 del_timer_sync(&vport->delayed_disc_tmo);
883 lpfc_linkdown(struct lpfc_hba *phba)
885 struct lpfc_vport *vport = phba->pport;
886 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
887 struct lpfc_vport **vports;
888 LPFC_MBOXQ_t *mb;
889 int i;
891 if (phba->link_state == LPFC_LINK_DOWN) {
892 if (phba->sli4_hba.conf_trunk) {
893 phba->trunk_link.link0.state = 0;
894 phba->trunk_link.link1.state = 0;
895 phba->trunk_link.link2.state = 0;
896 phba->trunk_link.link3.state = 0;
898 return 0;
900 /* Block all SCSI stack I/Os */
901 lpfc_scsi_dev_block(phba);
903 phba->defer_flogi_acc_flag = false;
905 spin_lock_irq(&phba->hbalock);
906 phba->fcf.fcf_flag &= ~(FCF_AVAILABLE | FCF_SCAN_DONE);
907 spin_unlock_irq(&phba->hbalock);
908 if (phba->link_state > LPFC_LINK_DOWN) {
909 phba->link_state = LPFC_LINK_DOWN;
910 if (phba->sli4_hba.conf_trunk) {
911 phba->trunk_link.link0.state = 0;
912 phba->trunk_link.link1.state = 0;
913 phba->trunk_link.link2.state = 0;
914 phba->trunk_link.link3.state = 0;
916 spin_lock_irq(shost->host_lock);
917 phba->pport->fc_flag &= ~FC_LBIT;
918 spin_unlock_irq(shost->host_lock);
920 vports = lpfc_create_vport_work_array(phba);
921 if (vports != NULL) {
922 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
923 /* Issue a LINK DOWN event to all nodes */
924 lpfc_linkdown_port(vports[i]);
926 vports[i]->fc_myDID = 0;
928 if ((phba->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) ||
929 (phba->cfg_enable_fc4_type == LPFC_ENABLE_NVME)) {
930 if (phba->nvmet_support)
931 lpfc_nvmet_update_targetport(phba);
932 else
933 lpfc_nvme_update_localport(vports[i]);
937 lpfc_destroy_vport_work_array(phba, vports);
938 /* Clean up any firmware default rpi's */
939 mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
940 if (mb) {
941 lpfc_unreg_did(phba, 0xffff, LPFC_UNREG_ALL_DFLT_RPIS, mb);
942 mb->vport = vport;
943 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
944 if (lpfc_sli_issue_mbox(phba, mb, MBX_NOWAIT)
945 == MBX_NOT_FINISHED) {
946 mempool_free(mb, phba->mbox_mem_pool);
950 /* Setup myDID for link up if we are in pt2pt mode */
951 if (phba->pport->fc_flag & FC_PT2PT) {
952 mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
953 if (mb) {
954 lpfc_config_link(phba, mb);
955 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
956 mb->vport = vport;
957 if (lpfc_sli_issue_mbox(phba, mb, MBX_NOWAIT)
958 == MBX_NOT_FINISHED) {
959 mempool_free(mb, phba->mbox_mem_pool);
962 spin_lock_irq(shost->host_lock);
963 phba->pport->fc_flag &= ~(FC_PT2PT | FC_PT2PT_PLOGI);
964 phba->pport->rcv_flogi_cnt = 0;
965 spin_unlock_irq(shost->host_lock);
967 return 0;
970 static void
971 lpfc_linkup_cleanup_nodes(struct lpfc_vport *vport)
973 struct lpfc_nodelist *ndlp;
975 list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
976 ndlp->nlp_fc4_type &= ~(NLP_FC4_FCP | NLP_FC4_NVME);
977 if (!NLP_CHK_NODE_ACT(ndlp))
978 continue;
979 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
980 continue;
981 if (ndlp->nlp_type & NLP_FABRIC) {
982 /* On Linkup its safe to clean up the ndlp
983 * from Fabric connections.
985 if (ndlp->nlp_DID != Fabric_DID)
986 lpfc_unreg_rpi(vport, ndlp);
987 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
988 } else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) {
989 /* Fail outstanding IO now since device is
990 * marked for PLOGI.
992 lpfc_unreg_rpi(vport, ndlp);
997 static void
998 lpfc_linkup_port(struct lpfc_vport *vport)
1000 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1001 struct lpfc_hba *phba = vport->phba;
1003 if ((vport->load_flag & FC_UNLOADING) != 0)
1004 return;
1006 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
1007 "Link Up: top:x%x speed:x%x flg:x%x",
1008 phba->fc_topology, phba->fc_linkspeed, phba->link_flag);
1010 /* If NPIV is not enabled, only bring the physical port up */
1011 if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
1012 (vport != phba->pport))
1013 return;
1015 if (phba->cfg_enable_fc4_type != LPFC_ENABLE_NVME)
1016 fc_host_post_event(shost, fc_get_event_number(),
1017 FCH_EVT_LINKUP, 0);
1019 spin_lock_irq(shost->host_lock);
1020 vport->fc_flag &= ~(FC_PT2PT | FC_PT2PT_PLOGI | FC_ABORT_DISCOVERY |
1021 FC_RSCN_MODE | FC_NLP_MORE | FC_RSCN_DISCOVERY);
1022 vport->fc_flag |= FC_NDISC_ACTIVE;
1023 vport->fc_ns_retry = 0;
1024 spin_unlock_irq(shost->host_lock);
1026 if (vport->fc_flag & FC_LBIT)
1027 lpfc_linkup_cleanup_nodes(vport);
1031 static int
1032 lpfc_linkup(struct lpfc_hba *phba)
1034 struct lpfc_vport **vports;
1035 int i;
1036 struct Scsi_Host *shost = lpfc_shost_from_vport(phba->pport);
1038 phba->link_state = LPFC_LINK_UP;
1040 /* Unblock fabric iocbs if they are blocked */
1041 clear_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags);
1042 del_timer_sync(&phba->fabric_block_timer);
1044 vports = lpfc_create_vport_work_array(phba);
1045 if (vports != NULL)
1046 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++)
1047 lpfc_linkup_port(vports[i]);
1048 lpfc_destroy_vport_work_array(phba, vports);
1050 /* Clear the pport flogi counter in case the link down was
1051 * absorbed without an ACQE. No lock here - in worker thread
1052 * and discovery is synchronized.
1054 spin_lock_irq(shost->host_lock);
1055 phba->pport->rcv_flogi_cnt = 0;
1056 spin_unlock_irq(shost->host_lock);
1058 /* reinitialize initial FLOGI flag */
1059 phba->hba_flag &= ~(HBA_FLOGI_ISSUED);
1060 phba->defer_flogi_acc_flag = false;
1062 return 0;
1066 * This routine handles processing a CLEAR_LA mailbox
1067 * command upon completion. It is setup in the LPFC_MBOXQ
1068 * as the completion routine when the command is
1069 * handed off to the SLI layer. SLI3 only.
1071 static void
1072 lpfc_mbx_cmpl_clear_la(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1074 struct lpfc_vport *vport = pmb->vport;
1075 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1076 struct lpfc_sli *psli = &phba->sli;
1077 MAILBOX_t *mb = &pmb->u.mb;
1078 uint32_t control;
1080 /* Since we don't do discovery right now, turn these off here */
1081 psli->sli3_ring[LPFC_EXTRA_RING].flag &= ~LPFC_STOP_IOCB_EVENT;
1082 psli->sli3_ring[LPFC_FCP_RING].flag &= ~LPFC_STOP_IOCB_EVENT;
1084 /* Check for error */
1085 if ((mb->mbxStatus) && (mb->mbxStatus != 0x1601)) {
1086 /* CLEAR_LA mbox error <mbxStatus> state <hba_state> */
1087 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
1088 "0320 CLEAR_LA mbxStatus error x%x hba "
1089 "state x%x\n",
1090 mb->mbxStatus, vport->port_state);
1091 phba->link_state = LPFC_HBA_ERROR;
1092 goto out;
1095 if (vport->port_type == LPFC_PHYSICAL_PORT)
1096 phba->link_state = LPFC_HBA_READY;
1098 spin_lock_irq(&phba->hbalock);
1099 psli->sli_flag |= LPFC_PROCESS_LA;
1100 control = readl(phba->HCregaddr);
1101 control |= HC_LAINT_ENA;
1102 writel(control, phba->HCregaddr);
1103 readl(phba->HCregaddr); /* flush */
1104 spin_unlock_irq(&phba->hbalock);
1105 mempool_free(pmb, phba->mbox_mem_pool);
1106 return;
1108 out:
1109 /* Device Discovery completes */
1110 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
1111 "0225 Device Discovery completes\n");
1112 mempool_free(pmb, phba->mbox_mem_pool);
1114 spin_lock_irq(shost->host_lock);
1115 vport->fc_flag &= ~FC_ABORT_DISCOVERY;
1116 spin_unlock_irq(shost->host_lock);
1118 lpfc_can_disctmo(vport);
1120 /* turn on Link Attention interrupts */
1122 spin_lock_irq(&phba->hbalock);
1123 psli->sli_flag |= LPFC_PROCESS_LA;
1124 control = readl(phba->HCregaddr);
1125 control |= HC_LAINT_ENA;
1126 writel(control, phba->HCregaddr);
1127 readl(phba->HCregaddr); /* flush */
1128 spin_unlock_irq(&phba->hbalock);
1130 return;
1134 void
1135 lpfc_mbx_cmpl_local_config_link(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1137 struct lpfc_vport *vport = pmb->vport;
1138 uint8_t bbscn = 0;
1140 if (pmb->u.mb.mbxStatus)
1141 goto out;
1143 mempool_free(pmb, phba->mbox_mem_pool);
1145 /* don't perform discovery for SLI4 loopback diagnostic test */
1146 if ((phba->sli_rev == LPFC_SLI_REV4) &&
1147 !(phba->hba_flag & HBA_FCOE_MODE) &&
1148 (phba->link_flag & LS_LOOPBACK_MODE))
1149 return;
1151 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP &&
1152 vport->fc_flag & FC_PUBLIC_LOOP &&
1153 !(vport->fc_flag & FC_LBIT)) {
1154 /* Need to wait for FAN - use discovery timer
1155 * for timeout. port_state is identically
1156 * LPFC_LOCAL_CFG_LINK while waiting for FAN
1158 lpfc_set_disctmo(vport);
1159 return;
1162 /* Start discovery by sending a FLOGI. port_state is identically
1163 * LPFC_FLOGI while waiting for FLOGI cmpl
1165 if (vport->port_state != LPFC_FLOGI) {
1166 if (phba->bbcredit_support && phba->cfg_enable_bbcr) {
1167 bbscn = bf_get(lpfc_bbscn_def,
1168 &phba->sli4_hba.bbscn_params);
1169 vport->fc_sparam.cmn.bbRcvSizeMsb &= 0xf;
1170 vport->fc_sparam.cmn.bbRcvSizeMsb |= (bbscn << 4);
1172 lpfc_initial_flogi(vport);
1173 } else if (vport->fc_flag & FC_PT2PT) {
1174 lpfc_disc_start(vport);
1176 return;
1178 out:
1179 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
1180 "0306 CONFIG_LINK mbxStatus error x%x "
1181 "HBA state x%x\n",
1182 pmb->u.mb.mbxStatus, vport->port_state);
1183 mempool_free(pmb, phba->mbox_mem_pool);
1185 lpfc_linkdown(phba);
1187 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
1188 "0200 CONFIG_LINK bad hba state x%x\n",
1189 vport->port_state);
1191 lpfc_issue_clear_la(phba, vport);
1192 return;
1196 * lpfc_sli4_clear_fcf_rr_bmask
1197 * @phba pointer to the struct lpfc_hba for this port.
1198 * This fucnction resets the round robin bit mask and clears the
1199 * fcf priority list. The list deletions are done while holding the
1200 * hbalock. The ON_LIST flag and the FLOGI_FAILED flags are cleared
1201 * from the lpfc_fcf_pri record.
1203 void
1204 lpfc_sli4_clear_fcf_rr_bmask(struct lpfc_hba *phba)
1206 struct lpfc_fcf_pri *fcf_pri;
1207 struct lpfc_fcf_pri *next_fcf_pri;
1208 memset(phba->fcf.fcf_rr_bmask, 0, sizeof(*phba->fcf.fcf_rr_bmask));
1209 spin_lock_irq(&phba->hbalock);
1210 list_for_each_entry_safe(fcf_pri, next_fcf_pri,
1211 &phba->fcf.fcf_pri_list, list) {
1212 list_del_init(&fcf_pri->list);
1213 fcf_pri->fcf_rec.flag = 0;
1215 spin_unlock_irq(&phba->hbalock);
1217 static void
1218 lpfc_mbx_cmpl_reg_fcfi(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
1220 struct lpfc_vport *vport = mboxq->vport;
1222 if (mboxq->u.mb.mbxStatus) {
1223 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
1224 "2017 REG_FCFI mbxStatus error x%x "
1225 "HBA state x%x\n",
1226 mboxq->u.mb.mbxStatus, vport->port_state);
1227 goto fail_out;
1230 /* Start FCoE discovery by sending a FLOGI. */
1231 phba->fcf.fcfi = bf_get(lpfc_reg_fcfi_fcfi, &mboxq->u.mqe.un.reg_fcfi);
1232 /* Set the FCFI registered flag */
1233 spin_lock_irq(&phba->hbalock);
1234 phba->fcf.fcf_flag |= FCF_REGISTERED;
1235 spin_unlock_irq(&phba->hbalock);
1237 /* If there is a pending FCoE event, restart FCF table scan. */
1238 if ((!(phba->hba_flag & FCF_RR_INPROG)) &&
1239 lpfc_check_pending_fcoe_event(phba, LPFC_UNREG_FCF))
1240 goto fail_out;
1242 /* Mark successful completion of FCF table scan */
1243 spin_lock_irq(&phba->hbalock);
1244 phba->fcf.fcf_flag |= (FCF_SCAN_DONE | FCF_IN_USE);
1245 phba->hba_flag &= ~FCF_TS_INPROG;
1246 if (vport->port_state != LPFC_FLOGI) {
1247 phba->hba_flag |= FCF_RR_INPROG;
1248 spin_unlock_irq(&phba->hbalock);
1249 lpfc_issue_init_vfi(vport);
1250 goto out;
1252 spin_unlock_irq(&phba->hbalock);
1253 goto out;
1255 fail_out:
1256 spin_lock_irq(&phba->hbalock);
1257 phba->hba_flag &= ~FCF_RR_INPROG;
1258 spin_unlock_irq(&phba->hbalock);
1259 out:
1260 mempool_free(mboxq, phba->mbox_mem_pool);
1264 * lpfc_fab_name_match - Check if the fcf fabric name match.
1265 * @fab_name: pointer to fabric name.
1266 * @new_fcf_record: pointer to fcf record.
1268 * This routine compare the fcf record's fabric name with provided
1269 * fabric name. If the fabric name are identical this function
1270 * returns 1 else return 0.
1272 static uint32_t
1273 lpfc_fab_name_match(uint8_t *fab_name, struct fcf_record *new_fcf_record)
1275 if (fab_name[0] != bf_get(lpfc_fcf_record_fab_name_0, new_fcf_record))
1276 return 0;
1277 if (fab_name[1] != bf_get(lpfc_fcf_record_fab_name_1, new_fcf_record))
1278 return 0;
1279 if (fab_name[2] != bf_get(lpfc_fcf_record_fab_name_2, new_fcf_record))
1280 return 0;
1281 if (fab_name[3] != bf_get(lpfc_fcf_record_fab_name_3, new_fcf_record))
1282 return 0;
1283 if (fab_name[4] != bf_get(lpfc_fcf_record_fab_name_4, new_fcf_record))
1284 return 0;
1285 if (fab_name[5] != bf_get(lpfc_fcf_record_fab_name_5, new_fcf_record))
1286 return 0;
1287 if (fab_name[6] != bf_get(lpfc_fcf_record_fab_name_6, new_fcf_record))
1288 return 0;
1289 if (fab_name[7] != bf_get(lpfc_fcf_record_fab_name_7, new_fcf_record))
1290 return 0;
1291 return 1;
1295 * lpfc_sw_name_match - Check if the fcf switch name match.
1296 * @fab_name: pointer to fabric name.
1297 * @new_fcf_record: pointer to fcf record.
1299 * This routine compare the fcf record's switch name with provided
1300 * switch name. If the switch name are identical this function
1301 * returns 1 else return 0.
1303 static uint32_t
1304 lpfc_sw_name_match(uint8_t *sw_name, struct fcf_record *new_fcf_record)
1306 if (sw_name[0] != bf_get(lpfc_fcf_record_switch_name_0, new_fcf_record))
1307 return 0;
1308 if (sw_name[1] != bf_get(lpfc_fcf_record_switch_name_1, new_fcf_record))
1309 return 0;
1310 if (sw_name[2] != bf_get(lpfc_fcf_record_switch_name_2, new_fcf_record))
1311 return 0;
1312 if (sw_name[3] != bf_get(lpfc_fcf_record_switch_name_3, new_fcf_record))
1313 return 0;
1314 if (sw_name[4] != bf_get(lpfc_fcf_record_switch_name_4, new_fcf_record))
1315 return 0;
1316 if (sw_name[5] != bf_get(lpfc_fcf_record_switch_name_5, new_fcf_record))
1317 return 0;
1318 if (sw_name[6] != bf_get(lpfc_fcf_record_switch_name_6, new_fcf_record))
1319 return 0;
1320 if (sw_name[7] != bf_get(lpfc_fcf_record_switch_name_7, new_fcf_record))
1321 return 0;
1322 return 1;
1326 * lpfc_mac_addr_match - Check if the fcf mac address match.
1327 * @mac_addr: pointer to mac address.
1328 * @new_fcf_record: pointer to fcf record.
1330 * This routine compare the fcf record's mac address with HBA's
1331 * FCF mac address. If the mac addresses are identical this function
1332 * returns 1 else return 0.
1334 static uint32_t
1335 lpfc_mac_addr_match(uint8_t *mac_addr, struct fcf_record *new_fcf_record)
1337 if (mac_addr[0] != bf_get(lpfc_fcf_record_mac_0, new_fcf_record))
1338 return 0;
1339 if (mac_addr[1] != bf_get(lpfc_fcf_record_mac_1, new_fcf_record))
1340 return 0;
1341 if (mac_addr[2] != bf_get(lpfc_fcf_record_mac_2, new_fcf_record))
1342 return 0;
1343 if (mac_addr[3] != bf_get(lpfc_fcf_record_mac_3, new_fcf_record))
1344 return 0;
1345 if (mac_addr[4] != bf_get(lpfc_fcf_record_mac_4, new_fcf_record))
1346 return 0;
1347 if (mac_addr[5] != bf_get(lpfc_fcf_record_mac_5, new_fcf_record))
1348 return 0;
1349 return 1;
1352 static bool
1353 lpfc_vlan_id_match(uint16_t curr_vlan_id, uint16_t new_vlan_id)
1355 return (curr_vlan_id == new_vlan_id);
1359 * lpfc_update_fcf_record - Update driver fcf record
1360 * __lpfc_update_fcf_record_pri - update the lpfc_fcf_pri record.
1361 * @phba: pointer to lpfc hba data structure.
1362 * @fcf_index: Index for the lpfc_fcf_record.
1363 * @new_fcf_record: pointer to hba fcf record.
1365 * This routine updates the driver FCF priority record from the new HBA FCF
1366 * record. This routine is called with the host lock held.
1368 static void
1369 __lpfc_update_fcf_record_pri(struct lpfc_hba *phba, uint16_t fcf_index,
1370 struct fcf_record *new_fcf_record
1373 struct lpfc_fcf_pri *fcf_pri;
1375 lockdep_assert_held(&phba->hbalock);
1377 fcf_pri = &phba->fcf.fcf_pri[fcf_index];
1378 fcf_pri->fcf_rec.fcf_index = fcf_index;
1379 /* FCF record priority */
1380 fcf_pri->fcf_rec.priority = new_fcf_record->fip_priority;
1385 * lpfc_copy_fcf_record - Copy fcf information to lpfc_hba.
1386 * @fcf: pointer to driver fcf record.
1387 * @new_fcf_record: pointer to fcf record.
1389 * This routine copies the FCF information from the FCF
1390 * record to lpfc_hba data structure.
1392 static void
1393 lpfc_copy_fcf_record(struct lpfc_fcf_rec *fcf_rec,
1394 struct fcf_record *new_fcf_record)
1396 /* Fabric name */
1397 fcf_rec->fabric_name[0] =
1398 bf_get(lpfc_fcf_record_fab_name_0, new_fcf_record);
1399 fcf_rec->fabric_name[1] =
1400 bf_get(lpfc_fcf_record_fab_name_1, new_fcf_record);
1401 fcf_rec->fabric_name[2] =
1402 bf_get(lpfc_fcf_record_fab_name_2, new_fcf_record);
1403 fcf_rec->fabric_name[3] =
1404 bf_get(lpfc_fcf_record_fab_name_3, new_fcf_record);
1405 fcf_rec->fabric_name[4] =
1406 bf_get(lpfc_fcf_record_fab_name_4, new_fcf_record);
1407 fcf_rec->fabric_name[5] =
1408 bf_get(lpfc_fcf_record_fab_name_5, new_fcf_record);
1409 fcf_rec->fabric_name[6] =
1410 bf_get(lpfc_fcf_record_fab_name_6, new_fcf_record);
1411 fcf_rec->fabric_name[7] =
1412 bf_get(lpfc_fcf_record_fab_name_7, new_fcf_record);
1413 /* Mac address */
1414 fcf_rec->mac_addr[0] = bf_get(lpfc_fcf_record_mac_0, new_fcf_record);
1415 fcf_rec->mac_addr[1] = bf_get(lpfc_fcf_record_mac_1, new_fcf_record);
1416 fcf_rec->mac_addr[2] = bf_get(lpfc_fcf_record_mac_2, new_fcf_record);
1417 fcf_rec->mac_addr[3] = bf_get(lpfc_fcf_record_mac_3, new_fcf_record);
1418 fcf_rec->mac_addr[4] = bf_get(lpfc_fcf_record_mac_4, new_fcf_record);
1419 fcf_rec->mac_addr[5] = bf_get(lpfc_fcf_record_mac_5, new_fcf_record);
1420 /* FCF record index */
1421 fcf_rec->fcf_indx = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record);
1422 /* FCF record priority */
1423 fcf_rec->priority = new_fcf_record->fip_priority;
1424 /* Switch name */
1425 fcf_rec->switch_name[0] =
1426 bf_get(lpfc_fcf_record_switch_name_0, new_fcf_record);
1427 fcf_rec->switch_name[1] =
1428 bf_get(lpfc_fcf_record_switch_name_1, new_fcf_record);
1429 fcf_rec->switch_name[2] =
1430 bf_get(lpfc_fcf_record_switch_name_2, new_fcf_record);
1431 fcf_rec->switch_name[3] =
1432 bf_get(lpfc_fcf_record_switch_name_3, new_fcf_record);
1433 fcf_rec->switch_name[4] =
1434 bf_get(lpfc_fcf_record_switch_name_4, new_fcf_record);
1435 fcf_rec->switch_name[5] =
1436 bf_get(lpfc_fcf_record_switch_name_5, new_fcf_record);
1437 fcf_rec->switch_name[6] =
1438 bf_get(lpfc_fcf_record_switch_name_6, new_fcf_record);
1439 fcf_rec->switch_name[7] =
1440 bf_get(lpfc_fcf_record_switch_name_7, new_fcf_record);
1444 * lpfc_update_fcf_record - Update driver fcf record
1445 * @phba: pointer to lpfc hba data structure.
1446 * @fcf_rec: pointer to driver fcf record.
1447 * @new_fcf_record: pointer to hba fcf record.
1448 * @addr_mode: address mode to be set to the driver fcf record.
1449 * @vlan_id: vlan tag to be set to the driver fcf record.
1450 * @flag: flag bits to be set to the driver fcf record.
1452 * This routine updates the driver FCF record from the new HBA FCF record
1453 * together with the address mode, vlan_id, and other informations. This
1454 * routine is called with the host lock held.
1456 static void
1457 __lpfc_update_fcf_record(struct lpfc_hba *phba, struct lpfc_fcf_rec *fcf_rec,
1458 struct fcf_record *new_fcf_record, uint32_t addr_mode,
1459 uint16_t vlan_id, uint32_t flag)
1461 lockdep_assert_held(&phba->hbalock);
1463 /* Copy the fields from the HBA's FCF record */
1464 lpfc_copy_fcf_record(fcf_rec, new_fcf_record);
1465 /* Update other fields of driver FCF record */
1466 fcf_rec->addr_mode = addr_mode;
1467 fcf_rec->vlan_id = vlan_id;
1468 fcf_rec->flag |= (flag | RECORD_VALID);
1469 __lpfc_update_fcf_record_pri(phba,
1470 bf_get(lpfc_fcf_record_fcf_index, new_fcf_record),
1471 new_fcf_record);
1475 * lpfc_register_fcf - Register the FCF with hba.
1476 * @phba: pointer to lpfc hba data structure.
1478 * This routine issues a register fcfi mailbox command to register
1479 * the fcf with HBA.
1481 static void
1482 lpfc_register_fcf(struct lpfc_hba *phba)
1484 LPFC_MBOXQ_t *fcf_mbxq;
1485 int rc;
1487 spin_lock_irq(&phba->hbalock);
1488 /* If the FCF is not available do nothing. */
1489 if (!(phba->fcf.fcf_flag & FCF_AVAILABLE)) {
1490 phba->hba_flag &= ~(FCF_TS_INPROG | FCF_RR_INPROG);
1491 spin_unlock_irq(&phba->hbalock);
1492 return;
1495 /* The FCF is already registered, start discovery */
1496 if (phba->fcf.fcf_flag & FCF_REGISTERED) {
1497 phba->fcf.fcf_flag |= (FCF_SCAN_DONE | FCF_IN_USE);
1498 phba->hba_flag &= ~FCF_TS_INPROG;
1499 if (phba->pport->port_state != LPFC_FLOGI &&
1500 phba->pport->fc_flag & FC_FABRIC) {
1501 phba->hba_flag |= FCF_RR_INPROG;
1502 spin_unlock_irq(&phba->hbalock);
1503 lpfc_initial_flogi(phba->pport);
1504 return;
1506 spin_unlock_irq(&phba->hbalock);
1507 return;
1509 spin_unlock_irq(&phba->hbalock);
1511 fcf_mbxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1512 if (!fcf_mbxq) {
1513 spin_lock_irq(&phba->hbalock);
1514 phba->hba_flag &= ~(FCF_TS_INPROG | FCF_RR_INPROG);
1515 spin_unlock_irq(&phba->hbalock);
1516 return;
1519 lpfc_reg_fcfi(phba, fcf_mbxq);
1520 fcf_mbxq->vport = phba->pport;
1521 fcf_mbxq->mbox_cmpl = lpfc_mbx_cmpl_reg_fcfi;
1522 rc = lpfc_sli_issue_mbox(phba, fcf_mbxq, MBX_NOWAIT);
1523 if (rc == MBX_NOT_FINISHED) {
1524 spin_lock_irq(&phba->hbalock);
1525 phba->hba_flag &= ~(FCF_TS_INPROG | FCF_RR_INPROG);
1526 spin_unlock_irq(&phba->hbalock);
1527 mempool_free(fcf_mbxq, phba->mbox_mem_pool);
1530 return;
1534 * lpfc_match_fcf_conn_list - Check if the FCF record can be used for discovery.
1535 * @phba: pointer to lpfc hba data structure.
1536 * @new_fcf_record: pointer to fcf record.
1537 * @boot_flag: Indicates if this record used by boot bios.
1538 * @addr_mode: The address mode to be used by this FCF
1539 * @vlan_id: The vlan id to be used as vlan tagging by this FCF.
1541 * This routine compare the fcf record with connect list obtained from the
1542 * config region to decide if this FCF can be used for SAN discovery. It returns
1543 * 1 if this record can be used for SAN discovery else return zero. If this FCF
1544 * record can be used for SAN discovery, the boot_flag will indicate if this FCF
1545 * is used by boot bios and addr_mode will indicate the addressing mode to be
1546 * used for this FCF when the function returns.
1547 * If the FCF record need to be used with a particular vlan id, the vlan is
1548 * set in the vlan_id on return of the function. If not VLAN tagging need to
1549 * be used with the FCF vlan_id will be set to LPFC_FCOE_NULL_VID;
1551 static int
1552 lpfc_match_fcf_conn_list(struct lpfc_hba *phba,
1553 struct fcf_record *new_fcf_record,
1554 uint32_t *boot_flag, uint32_t *addr_mode,
1555 uint16_t *vlan_id)
1557 struct lpfc_fcf_conn_entry *conn_entry;
1558 int i, j, fcf_vlan_id = 0;
1560 /* Find the lowest VLAN id in the FCF record */
1561 for (i = 0; i < 512; i++) {
1562 if (new_fcf_record->vlan_bitmap[i]) {
1563 fcf_vlan_id = i * 8;
1564 j = 0;
1565 while (!((new_fcf_record->vlan_bitmap[i] >> j) & 1)) {
1566 j++;
1567 fcf_vlan_id++;
1569 break;
1573 /* FCF not valid/available or solicitation in progress */
1574 if (!bf_get(lpfc_fcf_record_fcf_avail, new_fcf_record) ||
1575 !bf_get(lpfc_fcf_record_fcf_valid, new_fcf_record) ||
1576 bf_get(lpfc_fcf_record_fcf_sol, new_fcf_record))
1577 return 0;
1579 if (!(phba->hba_flag & HBA_FIP_SUPPORT)) {
1580 *boot_flag = 0;
1581 *addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov,
1582 new_fcf_record);
1583 if (phba->valid_vlan)
1584 *vlan_id = phba->vlan_id;
1585 else
1586 *vlan_id = LPFC_FCOE_NULL_VID;
1587 return 1;
1591 * If there are no FCF connection table entry, driver connect to all
1592 * FCFs.
1594 if (list_empty(&phba->fcf_conn_rec_list)) {
1595 *boot_flag = 0;
1596 *addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov,
1597 new_fcf_record);
1600 * When there are no FCF connect entries, use driver's default
1601 * addressing mode - FPMA.
1603 if (*addr_mode & LPFC_FCF_FPMA)
1604 *addr_mode = LPFC_FCF_FPMA;
1606 /* If FCF record report a vlan id use that vlan id */
1607 if (fcf_vlan_id)
1608 *vlan_id = fcf_vlan_id;
1609 else
1610 *vlan_id = LPFC_FCOE_NULL_VID;
1611 return 1;
1614 list_for_each_entry(conn_entry,
1615 &phba->fcf_conn_rec_list, list) {
1616 if (!(conn_entry->conn_rec.flags & FCFCNCT_VALID))
1617 continue;
1619 if ((conn_entry->conn_rec.flags & FCFCNCT_FBNM_VALID) &&
1620 !lpfc_fab_name_match(conn_entry->conn_rec.fabric_name,
1621 new_fcf_record))
1622 continue;
1623 if ((conn_entry->conn_rec.flags & FCFCNCT_SWNM_VALID) &&
1624 !lpfc_sw_name_match(conn_entry->conn_rec.switch_name,
1625 new_fcf_record))
1626 continue;
1627 if (conn_entry->conn_rec.flags & FCFCNCT_VLAN_VALID) {
1629 * If the vlan bit map does not have the bit set for the
1630 * vlan id to be used, then it is not a match.
1632 if (!(new_fcf_record->vlan_bitmap
1633 [conn_entry->conn_rec.vlan_tag / 8] &
1634 (1 << (conn_entry->conn_rec.vlan_tag % 8))))
1635 continue;
1639 * If connection record does not support any addressing mode,
1640 * skip the FCF record.
1642 if (!(bf_get(lpfc_fcf_record_mac_addr_prov, new_fcf_record)
1643 & (LPFC_FCF_FPMA | LPFC_FCF_SPMA)))
1644 continue;
1647 * Check if the connection record specifies a required
1648 * addressing mode.
1650 if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) &&
1651 !(conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED)) {
1654 * If SPMA required but FCF not support this continue.
1656 if ((conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) &&
1657 !(bf_get(lpfc_fcf_record_mac_addr_prov,
1658 new_fcf_record) & LPFC_FCF_SPMA))
1659 continue;
1662 * If FPMA required but FCF not support this continue.
1664 if (!(conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) &&
1665 !(bf_get(lpfc_fcf_record_mac_addr_prov,
1666 new_fcf_record) & LPFC_FCF_FPMA))
1667 continue;
1671 * This fcf record matches filtering criteria.
1673 if (conn_entry->conn_rec.flags & FCFCNCT_BOOT)
1674 *boot_flag = 1;
1675 else
1676 *boot_flag = 0;
1679 * If user did not specify any addressing mode, or if the
1680 * preferred addressing mode specified by user is not supported
1681 * by FCF, allow fabric to pick the addressing mode.
1683 *addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov,
1684 new_fcf_record);
1686 * If the user specified a required address mode, assign that
1687 * address mode
1689 if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) &&
1690 (!(conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED)))
1691 *addr_mode = (conn_entry->conn_rec.flags &
1692 FCFCNCT_AM_SPMA) ?
1693 LPFC_FCF_SPMA : LPFC_FCF_FPMA;
1695 * If the user specified a preferred address mode, use the
1696 * addr mode only if FCF support the addr_mode.
1698 else if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) &&
1699 (conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED) &&
1700 (conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) &&
1701 (*addr_mode & LPFC_FCF_SPMA))
1702 *addr_mode = LPFC_FCF_SPMA;
1703 else if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) &&
1704 (conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED) &&
1705 !(conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) &&
1706 (*addr_mode & LPFC_FCF_FPMA))
1707 *addr_mode = LPFC_FCF_FPMA;
1709 /* If matching connect list has a vlan id, use it */
1710 if (conn_entry->conn_rec.flags & FCFCNCT_VLAN_VALID)
1711 *vlan_id = conn_entry->conn_rec.vlan_tag;
1713 * If no vlan id is specified in connect list, use the vlan id
1714 * in the FCF record
1716 else if (fcf_vlan_id)
1717 *vlan_id = fcf_vlan_id;
1718 else
1719 *vlan_id = LPFC_FCOE_NULL_VID;
1721 return 1;
1724 return 0;
1728 * lpfc_check_pending_fcoe_event - Check if there is pending fcoe event.
1729 * @phba: pointer to lpfc hba data structure.
1730 * @unreg_fcf: Unregister FCF if FCF table need to be re-scaned.
1732 * This function check if there is any fcoe event pending while driver
1733 * scan FCF entries. If there is any pending event, it will restart the
1734 * FCF saning and return 1 else return 0.
1737 lpfc_check_pending_fcoe_event(struct lpfc_hba *phba, uint8_t unreg_fcf)
1740 * If the Link is up and no FCoE events while in the
1741 * FCF discovery, no need to restart FCF discovery.
1743 if ((phba->link_state >= LPFC_LINK_UP) &&
1744 (phba->fcoe_eventtag == phba->fcoe_eventtag_at_fcf_scan))
1745 return 0;
1747 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
1748 "2768 Pending link or FCF event during current "
1749 "handling of the previous event: link_state:x%x, "
1750 "evt_tag_at_scan:x%x, evt_tag_current:x%x\n",
1751 phba->link_state, phba->fcoe_eventtag_at_fcf_scan,
1752 phba->fcoe_eventtag);
1754 spin_lock_irq(&phba->hbalock);
1755 phba->fcf.fcf_flag &= ~FCF_AVAILABLE;
1756 spin_unlock_irq(&phba->hbalock);
1758 if (phba->link_state >= LPFC_LINK_UP) {
1759 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY,
1760 "2780 Restart FCF table scan due to "
1761 "pending FCF event:evt_tag_at_scan:x%x, "
1762 "evt_tag_current:x%x\n",
1763 phba->fcoe_eventtag_at_fcf_scan,
1764 phba->fcoe_eventtag);
1765 lpfc_sli4_fcf_scan_read_fcf_rec(phba, LPFC_FCOE_FCF_GET_FIRST);
1766 } else {
1768 * Do not continue FCF discovery and clear FCF_TS_INPROG
1769 * flag
1771 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY,
1772 "2833 Stop FCF discovery process due to link "
1773 "state change (x%x)\n", phba->link_state);
1774 spin_lock_irq(&phba->hbalock);
1775 phba->hba_flag &= ~(FCF_TS_INPROG | FCF_RR_INPROG);
1776 phba->fcf.fcf_flag &= ~(FCF_REDISC_FOV | FCF_DISCOVERY);
1777 spin_unlock_irq(&phba->hbalock);
1780 /* Unregister the currently registered FCF if required */
1781 if (unreg_fcf) {
1782 spin_lock_irq(&phba->hbalock);
1783 phba->fcf.fcf_flag &= ~FCF_REGISTERED;
1784 spin_unlock_irq(&phba->hbalock);
1785 lpfc_sli4_unregister_fcf(phba);
1787 return 1;
1791 * lpfc_sli4_new_fcf_random_select - Randomly select an eligible new fcf record
1792 * @phba: pointer to lpfc hba data structure.
1793 * @fcf_cnt: number of eligible fcf record seen so far.
1795 * This function makes an running random selection decision on FCF record to
1796 * use through a sequence of @fcf_cnt eligible FCF records with equal
1797 * probability. To perform integer manunipulation of random numbers with
1798 * size unit32_t, the lower 16 bits of the 32-bit random number returned
1799 * from prandom_u32() are taken as the random random number generated.
1801 * Returns true when outcome is for the newly read FCF record should be
1802 * chosen; otherwise, return false when outcome is for keeping the previously
1803 * chosen FCF record.
1805 static bool
1806 lpfc_sli4_new_fcf_random_select(struct lpfc_hba *phba, uint32_t fcf_cnt)
1808 uint32_t rand_num;
1810 /* Get 16-bit uniform random number */
1811 rand_num = 0xFFFF & prandom_u32();
1813 /* Decision with probability 1/fcf_cnt */
1814 if ((fcf_cnt * rand_num) < 0xFFFF)
1815 return true;
1816 else
1817 return false;
1821 * lpfc_sli4_fcf_rec_mbox_parse - Parse read_fcf mbox command.
1822 * @phba: pointer to lpfc hba data structure.
1823 * @mboxq: pointer to mailbox object.
1824 * @next_fcf_index: pointer to holder of next fcf index.
1826 * This routine parses the non-embedded fcf mailbox command by performing the
1827 * necessarily error checking, non-embedded read FCF record mailbox command
1828 * SGE parsing, and endianness swapping.
1830 * Returns the pointer to the new FCF record in the non-embedded mailbox
1831 * command DMA memory if successfully, other NULL.
1833 static struct fcf_record *
1834 lpfc_sli4_fcf_rec_mbox_parse(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq,
1835 uint16_t *next_fcf_index)
1837 void *virt_addr;
1838 struct lpfc_mbx_sge sge;
1839 struct lpfc_mbx_read_fcf_tbl *read_fcf;
1840 uint32_t shdr_status, shdr_add_status, if_type;
1841 union lpfc_sli4_cfg_shdr *shdr;
1842 struct fcf_record *new_fcf_record;
1844 /* Get the first SGE entry from the non-embedded DMA memory. This
1845 * routine only uses a single SGE.
1847 lpfc_sli4_mbx_sge_get(mboxq, 0, &sge);
1848 if (unlikely(!mboxq->sge_array)) {
1849 lpfc_printf_log(phba, KERN_ERR, LOG_MBOX,
1850 "2524 Failed to get the non-embedded SGE "
1851 "virtual address\n");
1852 return NULL;
1854 virt_addr = mboxq->sge_array->addr[0];
1856 shdr = (union lpfc_sli4_cfg_shdr *)virt_addr;
1857 lpfc_sli_pcimem_bcopy(shdr, shdr,
1858 sizeof(union lpfc_sli4_cfg_shdr));
1859 shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
1860 if_type = bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf);
1861 shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
1862 if (shdr_status || shdr_add_status) {
1863 if (shdr_status == STATUS_FCF_TABLE_EMPTY ||
1864 if_type == LPFC_SLI_INTF_IF_TYPE_2)
1865 lpfc_printf_log(phba, KERN_ERR, LOG_FIP,
1866 "2726 READ_FCF_RECORD Indicates empty "
1867 "FCF table.\n");
1868 else
1869 lpfc_printf_log(phba, KERN_ERR, LOG_FIP,
1870 "2521 READ_FCF_RECORD mailbox failed "
1871 "with status x%x add_status x%x, "
1872 "mbx\n", shdr_status, shdr_add_status);
1873 return NULL;
1876 /* Interpreting the returned information of the FCF record */
1877 read_fcf = (struct lpfc_mbx_read_fcf_tbl *)virt_addr;
1878 lpfc_sli_pcimem_bcopy(read_fcf, read_fcf,
1879 sizeof(struct lpfc_mbx_read_fcf_tbl));
1880 *next_fcf_index = bf_get(lpfc_mbx_read_fcf_tbl_nxt_vindx, read_fcf);
1881 new_fcf_record = (struct fcf_record *)(virt_addr +
1882 sizeof(struct lpfc_mbx_read_fcf_tbl));
1883 lpfc_sli_pcimem_bcopy(new_fcf_record, new_fcf_record,
1884 offsetof(struct fcf_record, vlan_bitmap));
1885 new_fcf_record->word137 = le32_to_cpu(new_fcf_record->word137);
1886 new_fcf_record->word138 = le32_to_cpu(new_fcf_record->word138);
1888 return new_fcf_record;
1892 * lpfc_sli4_log_fcf_record_info - Log the information of a fcf record
1893 * @phba: pointer to lpfc hba data structure.
1894 * @fcf_record: pointer to the fcf record.
1895 * @vlan_id: the lowest vlan identifier associated to this fcf record.
1896 * @next_fcf_index: the index to the next fcf record in hba's fcf table.
1898 * This routine logs the detailed FCF record if the LOG_FIP loggin is
1899 * enabled.
1901 static void
1902 lpfc_sli4_log_fcf_record_info(struct lpfc_hba *phba,
1903 struct fcf_record *fcf_record,
1904 uint16_t vlan_id,
1905 uint16_t next_fcf_index)
1907 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
1908 "2764 READ_FCF_RECORD:\n"
1909 "\tFCF_Index : x%x\n"
1910 "\tFCF_Avail : x%x\n"
1911 "\tFCF_Valid : x%x\n"
1912 "\tFCF_SOL : x%x\n"
1913 "\tFIP_Priority : x%x\n"
1914 "\tMAC_Provider : x%x\n"
1915 "\tLowest VLANID : x%x\n"
1916 "\tFCF_MAC Addr : x%x:%x:%x:%x:%x:%x\n"
1917 "\tFabric_Name : x%x:%x:%x:%x:%x:%x:%x:%x\n"
1918 "\tSwitch_Name : x%x:%x:%x:%x:%x:%x:%x:%x\n"
1919 "\tNext_FCF_Index: x%x\n",
1920 bf_get(lpfc_fcf_record_fcf_index, fcf_record),
1921 bf_get(lpfc_fcf_record_fcf_avail, fcf_record),
1922 bf_get(lpfc_fcf_record_fcf_valid, fcf_record),
1923 bf_get(lpfc_fcf_record_fcf_sol, fcf_record),
1924 fcf_record->fip_priority,
1925 bf_get(lpfc_fcf_record_mac_addr_prov, fcf_record),
1926 vlan_id,
1927 bf_get(lpfc_fcf_record_mac_0, fcf_record),
1928 bf_get(lpfc_fcf_record_mac_1, fcf_record),
1929 bf_get(lpfc_fcf_record_mac_2, fcf_record),
1930 bf_get(lpfc_fcf_record_mac_3, fcf_record),
1931 bf_get(lpfc_fcf_record_mac_4, fcf_record),
1932 bf_get(lpfc_fcf_record_mac_5, fcf_record),
1933 bf_get(lpfc_fcf_record_fab_name_0, fcf_record),
1934 bf_get(lpfc_fcf_record_fab_name_1, fcf_record),
1935 bf_get(lpfc_fcf_record_fab_name_2, fcf_record),
1936 bf_get(lpfc_fcf_record_fab_name_3, fcf_record),
1937 bf_get(lpfc_fcf_record_fab_name_4, fcf_record),
1938 bf_get(lpfc_fcf_record_fab_name_5, fcf_record),
1939 bf_get(lpfc_fcf_record_fab_name_6, fcf_record),
1940 bf_get(lpfc_fcf_record_fab_name_7, fcf_record),
1941 bf_get(lpfc_fcf_record_switch_name_0, fcf_record),
1942 bf_get(lpfc_fcf_record_switch_name_1, fcf_record),
1943 bf_get(lpfc_fcf_record_switch_name_2, fcf_record),
1944 bf_get(lpfc_fcf_record_switch_name_3, fcf_record),
1945 bf_get(lpfc_fcf_record_switch_name_4, fcf_record),
1946 bf_get(lpfc_fcf_record_switch_name_5, fcf_record),
1947 bf_get(lpfc_fcf_record_switch_name_6, fcf_record),
1948 bf_get(lpfc_fcf_record_switch_name_7, fcf_record),
1949 next_fcf_index);
1953 lpfc_sli4_fcf_record_match - testing new FCF record for matching existing FCF
1954 * @phba: pointer to lpfc hba data structure.
1955 * @fcf_rec: pointer to an existing FCF record.
1956 * @new_fcf_record: pointer to a new FCF record.
1957 * @new_vlan_id: vlan id from the new FCF record.
1959 * This function performs matching test of a new FCF record against an existing
1960 * FCF record. If the new_vlan_id passed in is LPFC_FCOE_IGNORE_VID, vlan id
1961 * will not be used as part of the FCF record matching criteria.
1963 * Returns true if all the fields matching, otherwise returns false.
1965 static bool
1966 lpfc_sli4_fcf_record_match(struct lpfc_hba *phba,
1967 struct lpfc_fcf_rec *fcf_rec,
1968 struct fcf_record *new_fcf_record,
1969 uint16_t new_vlan_id)
1971 if (new_vlan_id != LPFC_FCOE_IGNORE_VID)
1972 if (!lpfc_vlan_id_match(fcf_rec->vlan_id, new_vlan_id))
1973 return false;
1974 if (!lpfc_mac_addr_match(fcf_rec->mac_addr, new_fcf_record))
1975 return false;
1976 if (!lpfc_sw_name_match(fcf_rec->switch_name, new_fcf_record))
1977 return false;
1978 if (!lpfc_fab_name_match(fcf_rec->fabric_name, new_fcf_record))
1979 return false;
1980 if (fcf_rec->priority != new_fcf_record->fip_priority)
1981 return false;
1982 return true;
1986 * lpfc_sli4_fcf_rr_next_proc - processing next roundrobin fcf
1987 * @vport: Pointer to vport object.
1988 * @fcf_index: index to next fcf.
1990 * This function processing the roundrobin fcf failover to next fcf index.
1991 * When this function is invoked, there will be a current fcf registered
1992 * for flogi.
1993 * Return: 0 for continue retrying flogi on currently registered fcf;
1994 * 1 for stop flogi on currently registered fcf;
1996 int lpfc_sli4_fcf_rr_next_proc(struct lpfc_vport *vport, uint16_t fcf_index)
1998 struct lpfc_hba *phba = vport->phba;
1999 int rc;
2001 if (fcf_index == LPFC_FCOE_FCF_NEXT_NONE) {
2002 spin_lock_irq(&phba->hbalock);
2003 if (phba->hba_flag & HBA_DEVLOSS_TMO) {
2004 spin_unlock_irq(&phba->hbalock);
2005 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2006 "2872 Devloss tmo with no eligible "
2007 "FCF, unregister in-use FCF (x%x) "
2008 "and rescan FCF table\n",
2009 phba->fcf.current_rec.fcf_indx);
2010 lpfc_unregister_fcf_rescan(phba);
2011 goto stop_flogi_current_fcf;
2013 /* Mark the end to FLOGI roundrobin failover */
2014 phba->hba_flag &= ~FCF_RR_INPROG;
2015 /* Allow action to new fcf asynchronous event */
2016 phba->fcf.fcf_flag &= ~(FCF_AVAILABLE | FCF_SCAN_DONE);
2017 spin_unlock_irq(&phba->hbalock);
2018 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2019 "2865 No FCF available, stop roundrobin FCF "
2020 "failover and change port state:x%x/x%x\n",
2021 phba->pport->port_state, LPFC_VPORT_UNKNOWN);
2022 phba->pport->port_state = LPFC_VPORT_UNKNOWN;
2024 if (!phba->fcf.fcf_redisc_attempted) {
2025 lpfc_unregister_fcf(phba);
2027 rc = lpfc_sli4_redisc_fcf_table(phba);
2028 if (!rc) {
2029 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2030 "3195 Rediscover FCF table\n");
2031 phba->fcf.fcf_redisc_attempted = 1;
2032 lpfc_sli4_clear_fcf_rr_bmask(phba);
2033 } else {
2034 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
2035 "3196 Rediscover FCF table "
2036 "failed. Status:x%x\n", rc);
2038 } else {
2039 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
2040 "3197 Already rediscover FCF table "
2041 "attempted. No more retry\n");
2043 goto stop_flogi_current_fcf;
2044 } else {
2045 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_ELS,
2046 "2794 Try FLOGI roundrobin FCF failover to "
2047 "(x%x)\n", fcf_index);
2048 rc = lpfc_sli4_fcf_rr_read_fcf_rec(phba, fcf_index);
2049 if (rc)
2050 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP | LOG_ELS,
2051 "2761 FLOGI roundrobin FCF failover "
2052 "failed (rc:x%x) to read FCF (x%x)\n",
2053 rc, phba->fcf.current_rec.fcf_indx);
2054 else
2055 goto stop_flogi_current_fcf;
2057 return 0;
2059 stop_flogi_current_fcf:
2060 lpfc_can_disctmo(vport);
2061 return 1;
2065 * lpfc_sli4_fcf_pri_list_del
2066 * @phba: pointer to lpfc hba data structure.
2067 * @fcf_index the index of the fcf record to delete
2068 * This routine checks the on list flag of the fcf_index to be deleted.
2069 * If it is one the list then it is removed from the list, and the flag
2070 * is cleared. This routine grab the hbalock before removing the fcf
2071 * record from the list.
2073 static void lpfc_sli4_fcf_pri_list_del(struct lpfc_hba *phba,
2074 uint16_t fcf_index)
2076 struct lpfc_fcf_pri *new_fcf_pri;
2078 new_fcf_pri = &phba->fcf.fcf_pri[fcf_index];
2079 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2080 "3058 deleting idx x%x pri x%x flg x%x\n",
2081 fcf_index, new_fcf_pri->fcf_rec.priority,
2082 new_fcf_pri->fcf_rec.flag);
2083 spin_lock_irq(&phba->hbalock);
2084 if (new_fcf_pri->fcf_rec.flag & LPFC_FCF_ON_PRI_LIST) {
2085 if (phba->fcf.current_rec.priority ==
2086 new_fcf_pri->fcf_rec.priority)
2087 phba->fcf.eligible_fcf_cnt--;
2088 list_del_init(&new_fcf_pri->list);
2089 new_fcf_pri->fcf_rec.flag &= ~LPFC_FCF_ON_PRI_LIST;
2091 spin_unlock_irq(&phba->hbalock);
2095 * lpfc_sli4_set_fcf_flogi_fail
2096 * @phba: pointer to lpfc hba data structure.
2097 * @fcf_index the index of the fcf record to update
2098 * This routine acquires the hbalock and then set the LPFC_FCF_FLOGI_FAILED
2099 * flag so the the round robin slection for the particular priority level
2100 * will try a different fcf record that does not have this bit set.
2101 * If the fcf record is re-read for any reason this flag is cleared brfore
2102 * adding it to the priority list.
2104 void
2105 lpfc_sli4_set_fcf_flogi_fail(struct lpfc_hba *phba, uint16_t fcf_index)
2107 struct lpfc_fcf_pri *new_fcf_pri;
2108 new_fcf_pri = &phba->fcf.fcf_pri[fcf_index];
2109 spin_lock_irq(&phba->hbalock);
2110 new_fcf_pri->fcf_rec.flag |= LPFC_FCF_FLOGI_FAILED;
2111 spin_unlock_irq(&phba->hbalock);
2115 * lpfc_sli4_fcf_pri_list_add
2116 * @phba: pointer to lpfc hba data structure.
2117 * @fcf_index the index of the fcf record to add
2118 * This routine checks the priority of the fcf_index to be added.
2119 * If it is a lower priority than the current head of the fcf_pri list
2120 * then it is added to the list in the right order.
2121 * If it is the same priority as the current head of the list then it
2122 * is added to the head of the list and its bit in the rr_bmask is set.
2123 * If the fcf_index to be added is of a higher priority than the current
2124 * head of the list then the rr_bmask is cleared, its bit is set in the
2125 * rr_bmask and it is added to the head of the list.
2126 * returns:
2127 * 0=success 1=failure
2129 static int lpfc_sli4_fcf_pri_list_add(struct lpfc_hba *phba,
2130 uint16_t fcf_index,
2131 struct fcf_record *new_fcf_record)
2133 uint16_t current_fcf_pri;
2134 uint16_t last_index;
2135 struct lpfc_fcf_pri *fcf_pri;
2136 struct lpfc_fcf_pri *next_fcf_pri;
2137 struct lpfc_fcf_pri *new_fcf_pri;
2138 int ret;
2140 new_fcf_pri = &phba->fcf.fcf_pri[fcf_index];
2141 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2142 "3059 adding idx x%x pri x%x flg x%x\n",
2143 fcf_index, new_fcf_record->fip_priority,
2144 new_fcf_pri->fcf_rec.flag);
2145 spin_lock_irq(&phba->hbalock);
2146 if (new_fcf_pri->fcf_rec.flag & LPFC_FCF_ON_PRI_LIST)
2147 list_del_init(&new_fcf_pri->list);
2148 new_fcf_pri->fcf_rec.fcf_index = fcf_index;
2149 new_fcf_pri->fcf_rec.priority = new_fcf_record->fip_priority;
2150 if (list_empty(&phba->fcf.fcf_pri_list)) {
2151 list_add(&new_fcf_pri->list, &phba->fcf.fcf_pri_list);
2152 ret = lpfc_sli4_fcf_rr_index_set(phba,
2153 new_fcf_pri->fcf_rec.fcf_index);
2154 goto out;
2157 last_index = find_first_bit(phba->fcf.fcf_rr_bmask,
2158 LPFC_SLI4_FCF_TBL_INDX_MAX);
2159 if (last_index >= LPFC_SLI4_FCF_TBL_INDX_MAX) {
2160 ret = 0; /* Empty rr list */
2161 goto out;
2163 current_fcf_pri = phba->fcf.fcf_pri[last_index].fcf_rec.priority;
2164 if (new_fcf_pri->fcf_rec.priority <= current_fcf_pri) {
2165 list_add(&new_fcf_pri->list, &phba->fcf.fcf_pri_list);
2166 if (new_fcf_pri->fcf_rec.priority < current_fcf_pri) {
2167 memset(phba->fcf.fcf_rr_bmask, 0,
2168 sizeof(*phba->fcf.fcf_rr_bmask));
2169 /* fcfs_at_this_priority_level = 1; */
2170 phba->fcf.eligible_fcf_cnt = 1;
2171 } else
2172 /* fcfs_at_this_priority_level++; */
2173 phba->fcf.eligible_fcf_cnt++;
2174 ret = lpfc_sli4_fcf_rr_index_set(phba,
2175 new_fcf_pri->fcf_rec.fcf_index);
2176 goto out;
2179 list_for_each_entry_safe(fcf_pri, next_fcf_pri,
2180 &phba->fcf.fcf_pri_list, list) {
2181 if (new_fcf_pri->fcf_rec.priority <=
2182 fcf_pri->fcf_rec.priority) {
2183 if (fcf_pri->list.prev == &phba->fcf.fcf_pri_list)
2184 list_add(&new_fcf_pri->list,
2185 &phba->fcf.fcf_pri_list);
2186 else
2187 list_add(&new_fcf_pri->list,
2188 &((struct lpfc_fcf_pri *)
2189 fcf_pri->list.prev)->list);
2190 ret = 0;
2191 goto out;
2192 } else if (fcf_pri->list.next == &phba->fcf.fcf_pri_list
2193 || new_fcf_pri->fcf_rec.priority <
2194 next_fcf_pri->fcf_rec.priority) {
2195 list_add(&new_fcf_pri->list, &fcf_pri->list);
2196 ret = 0;
2197 goto out;
2199 if (new_fcf_pri->fcf_rec.priority > fcf_pri->fcf_rec.priority)
2200 continue;
2203 ret = 1;
2204 out:
2205 /* we use = instead of |= to clear the FLOGI_FAILED flag. */
2206 new_fcf_pri->fcf_rec.flag = LPFC_FCF_ON_PRI_LIST;
2207 spin_unlock_irq(&phba->hbalock);
2208 return ret;
2212 * lpfc_mbx_cmpl_fcf_scan_read_fcf_rec - fcf scan read_fcf mbox cmpl handler.
2213 * @phba: pointer to lpfc hba data structure.
2214 * @mboxq: pointer to mailbox object.
2216 * This function iterates through all the fcf records available in
2217 * HBA and chooses the optimal FCF record for discovery. After finding
2218 * the FCF for discovery it registers the FCF record and kicks start
2219 * discovery.
2220 * If FCF_IN_USE flag is set in currently used FCF, the routine tries to
2221 * use an FCF record which matches fabric name and mac address of the
2222 * currently used FCF record.
2223 * If the driver supports only one FCF, it will try to use the FCF record
2224 * used by BOOT_BIOS.
2226 void
2227 lpfc_mbx_cmpl_fcf_scan_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
2229 struct fcf_record *new_fcf_record;
2230 uint32_t boot_flag, addr_mode;
2231 uint16_t fcf_index, next_fcf_index;
2232 struct lpfc_fcf_rec *fcf_rec = NULL;
2233 uint16_t vlan_id = LPFC_FCOE_NULL_VID;
2234 bool select_new_fcf;
2235 int rc;
2237 /* If there is pending FCoE event restart FCF table scan */
2238 if (lpfc_check_pending_fcoe_event(phba, LPFC_SKIP_UNREG_FCF)) {
2239 lpfc_sli4_mbox_cmd_free(phba, mboxq);
2240 return;
2243 /* Parse the FCF record from the non-embedded mailbox command */
2244 new_fcf_record = lpfc_sli4_fcf_rec_mbox_parse(phba, mboxq,
2245 &next_fcf_index);
2246 if (!new_fcf_record) {
2247 lpfc_printf_log(phba, KERN_ERR, LOG_FIP,
2248 "2765 Mailbox command READ_FCF_RECORD "
2249 "failed to retrieve a FCF record.\n");
2250 /* Let next new FCF event trigger fast failover */
2251 spin_lock_irq(&phba->hbalock);
2252 phba->hba_flag &= ~FCF_TS_INPROG;
2253 spin_unlock_irq(&phba->hbalock);
2254 lpfc_sli4_mbox_cmd_free(phba, mboxq);
2255 return;
2258 /* Check the FCF record against the connection list */
2259 rc = lpfc_match_fcf_conn_list(phba, new_fcf_record, &boot_flag,
2260 &addr_mode, &vlan_id);
2262 /* Log the FCF record information if turned on */
2263 lpfc_sli4_log_fcf_record_info(phba, new_fcf_record, vlan_id,
2264 next_fcf_index);
2267 * If the fcf record does not match with connect list entries
2268 * read the next entry; otherwise, this is an eligible FCF
2269 * record for roundrobin FCF failover.
2271 if (!rc) {
2272 lpfc_sli4_fcf_pri_list_del(phba,
2273 bf_get(lpfc_fcf_record_fcf_index,
2274 new_fcf_record));
2275 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
2276 "2781 FCF (x%x) failed connection "
2277 "list check: (x%x/x%x/%x)\n",
2278 bf_get(lpfc_fcf_record_fcf_index,
2279 new_fcf_record),
2280 bf_get(lpfc_fcf_record_fcf_avail,
2281 new_fcf_record),
2282 bf_get(lpfc_fcf_record_fcf_valid,
2283 new_fcf_record),
2284 bf_get(lpfc_fcf_record_fcf_sol,
2285 new_fcf_record));
2286 if ((phba->fcf.fcf_flag & FCF_IN_USE) &&
2287 lpfc_sli4_fcf_record_match(phba, &phba->fcf.current_rec,
2288 new_fcf_record, LPFC_FCOE_IGNORE_VID)) {
2289 if (bf_get(lpfc_fcf_record_fcf_index, new_fcf_record) !=
2290 phba->fcf.current_rec.fcf_indx) {
2291 lpfc_printf_log(phba, KERN_ERR, LOG_FIP,
2292 "2862 FCF (x%x) matches property "
2293 "of in-use FCF (x%x)\n",
2294 bf_get(lpfc_fcf_record_fcf_index,
2295 new_fcf_record),
2296 phba->fcf.current_rec.fcf_indx);
2297 goto read_next_fcf;
2300 * In case the current in-use FCF record becomes
2301 * invalid/unavailable during FCF discovery that
2302 * was not triggered by fast FCF failover process,
2303 * treat it as fast FCF failover.
2305 if (!(phba->fcf.fcf_flag & FCF_REDISC_PEND) &&
2306 !(phba->fcf.fcf_flag & FCF_REDISC_FOV)) {
2307 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
2308 "2835 Invalid in-use FCF "
2309 "(x%x), enter FCF failover "
2310 "table scan.\n",
2311 phba->fcf.current_rec.fcf_indx);
2312 spin_lock_irq(&phba->hbalock);
2313 phba->fcf.fcf_flag |= FCF_REDISC_FOV;
2314 spin_unlock_irq(&phba->hbalock);
2315 lpfc_sli4_mbox_cmd_free(phba, mboxq);
2316 lpfc_sli4_fcf_scan_read_fcf_rec(phba,
2317 LPFC_FCOE_FCF_GET_FIRST);
2318 return;
2321 goto read_next_fcf;
2322 } else {
2323 fcf_index = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record);
2324 rc = lpfc_sli4_fcf_pri_list_add(phba, fcf_index,
2325 new_fcf_record);
2326 if (rc)
2327 goto read_next_fcf;
2331 * If this is not the first FCF discovery of the HBA, use last
2332 * FCF record for the discovery. The condition that a rescan
2333 * matches the in-use FCF record: fabric name, switch name, mac
2334 * address, and vlan_id.
2336 spin_lock_irq(&phba->hbalock);
2337 if (phba->fcf.fcf_flag & FCF_IN_USE) {
2338 if (phba->cfg_fcf_failover_policy == LPFC_FCF_FOV &&
2339 lpfc_sli4_fcf_record_match(phba, &phba->fcf.current_rec,
2340 new_fcf_record, vlan_id)) {
2341 if (bf_get(lpfc_fcf_record_fcf_index, new_fcf_record) ==
2342 phba->fcf.current_rec.fcf_indx) {
2343 phba->fcf.fcf_flag |= FCF_AVAILABLE;
2344 if (phba->fcf.fcf_flag & FCF_REDISC_PEND)
2345 /* Stop FCF redisc wait timer */
2346 __lpfc_sli4_stop_fcf_redisc_wait_timer(
2347 phba);
2348 else if (phba->fcf.fcf_flag & FCF_REDISC_FOV)
2349 /* Fast failover, mark completed */
2350 phba->fcf.fcf_flag &= ~FCF_REDISC_FOV;
2351 spin_unlock_irq(&phba->hbalock);
2352 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2353 "2836 New FCF matches in-use "
2354 "FCF (x%x), port_state:x%x, "
2355 "fc_flag:x%x\n",
2356 phba->fcf.current_rec.fcf_indx,
2357 phba->pport->port_state,
2358 phba->pport->fc_flag);
2359 goto out;
2360 } else
2361 lpfc_printf_log(phba, KERN_ERR, LOG_FIP,
2362 "2863 New FCF (x%x) matches "
2363 "property of in-use FCF (x%x)\n",
2364 bf_get(lpfc_fcf_record_fcf_index,
2365 new_fcf_record),
2366 phba->fcf.current_rec.fcf_indx);
2369 * Read next FCF record from HBA searching for the matching
2370 * with in-use record only if not during the fast failover
2371 * period. In case of fast failover period, it shall try to
2372 * determine whether the FCF record just read should be the
2373 * next candidate.
2375 if (!(phba->fcf.fcf_flag & FCF_REDISC_FOV)) {
2376 spin_unlock_irq(&phba->hbalock);
2377 goto read_next_fcf;
2381 * Update on failover FCF record only if it's in FCF fast-failover
2382 * period; otherwise, update on current FCF record.
2384 if (phba->fcf.fcf_flag & FCF_REDISC_FOV)
2385 fcf_rec = &phba->fcf.failover_rec;
2386 else
2387 fcf_rec = &phba->fcf.current_rec;
2389 if (phba->fcf.fcf_flag & FCF_AVAILABLE) {
2391 * If the driver FCF record does not have boot flag
2392 * set and new hba fcf record has boot flag set, use
2393 * the new hba fcf record.
2395 if (boot_flag && !(fcf_rec->flag & BOOT_ENABLE)) {
2396 /* Choose this FCF record */
2397 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2398 "2837 Update current FCF record "
2399 "(x%x) with new FCF record (x%x)\n",
2400 fcf_rec->fcf_indx,
2401 bf_get(lpfc_fcf_record_fcf_index,
2402 new_fcf_record));
2403 __lpfc_update_fcf_record(phba, fcf_rec, new_fcf_record,
2404 addr_mode, vlan_id, BOOT_ENABLE);
2405 spin_unlock_irq(&phba->hbalock);
2406 goto read_next_fcf;
2409 * If the driver FCF record has boot flag set and the
2410 * new hba FCF record does not have boot flag, read
2411 * the next FCF record.
2413 if (!boot_flag && (fcf_rec->flag & BOOT_ENABLE)) {
2414 spin_unlock_irq(&phba->hbalock);
2415 goto read_next_fcf;
2418 * If the new hba FCF record has lower priority value
2419 * than the driver FCF record, use the new record.
2421 if (new_fcf_record->fip_priority < fcf_rec->priority) {
2422 /* Choose the new FCF record with lower priority */
2423 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2424 "2838 Update current FCF record "
2425 "(x%x) with new FCF record (x%x)\n",
2426 fcf_rec->fcf_indx,
2427 bf_get(lpfc_fcf_record_fcf_index,
2428 new_fcf_record));
2429 __lpfc_update_fcf_record(phba, fcf_rec, new_fcf_record,
2430 addr_mode, vlan_id, 0);
2431 /* Reset running random FCF selection count */
2432 phba->fcf.eligible_fcf_cnt = 1;
2433 } else if (new_fcf_record->fip_priority == fcf_rec->priority) {
2434 /* Update running random FCF selection count */
2435 phba->fcf.eligible_fcf_cnt++;
2436 select_new_fcf = lpfc_sli4_new_fcf_random_select(phba,
2437 phba->fcf.eligible_fcf_cnt);
2438 if (select_new_fcf) {
2439 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2440 "2839 Update current FCF record "
2441 "(x%x) with new FCF record (x%x)\n",
2442 fcf_rec->fcf_indx,
2443 bf_get(lpfc_fcf_record_fcf_index,
2444 new_fcf_record));
2445 /* Choose the new FCF by random selection */
2446 __lpfc_update_fcf_record(phba, fcf_rec,
2447 new_fcf_record,
2448 addr_mode, vlan_id, 0);
2451 spin_unlock_irq(&phba->hbalock);
2452 goto read_next_fcf;
2455 * This is the first suitable FCF record, choose this record for
2456 * initial best-fit FCF.
2458 if (fcf_rec) {
2459 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2460 "2840 Update initial FCF candidate "
2461 "with FCF (x%x)\n",
2462 bf_get(lpfc_fcf_record_fcf_index,
2463 new_fcf_record));
2464 __lpfc_update_fcf_record(phba, fcf_rec, new_fcf_record,
2465 addr_mode, vlan_id, (boot_flag ?
2466 BOOT_ENABLE : 0));
2467 phba->fcf.fcf_flag |= FCF_AVAILABLE;
2468 /* Setup initial running random FCF selection count */
2469 phba->fcf.eligible_fcf_cnt = 1;
2471 spin_unlock_irq(&phba->hbalock);
2472 goto read_next_fcf;
2474 read_next_fcf:
2475 lpfc_sli4_mbox_cmd_free(phba, mboxq);
2476 if (next_fcf_index == LPFC_FCOE_FCF_NEXT_NONE || next_fcf_index == 0) {
2477 if (phba->fcf.fcf_flag & FCF_REDISC_FOV) {
2479 * Case of FCF fast failover scan
2483 * It has not found any suitable FCF record, cancel
2484 * FCF scan inprogress, and do nothing
2486 if (!(phba->fcf.failover_rec.flag & RECORD_VALID)) {
2487 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
2488 "2782 No suitable FCF found: "
2489 "(x%x/x%x)\n",
2490 phba->fcoe_eventtag_at_fcf_scan,
2491 bf_get(lpfc_fcf_record_fcf_index,
2492 new_fcf_record));
2493 spin_lock_irq(&phba->hbalock);
2494 if (phba->hba_flag & HBA_DEVLOSS_TMO) {
2495 phba->hba_flag &= ~FCF_TS_INPROG;
2496 spin_unlock_irq(&phba->hbalock);
2497 /* Unregister in-use FCF and rescan */
2498 lpfc_printf_log(phba, KERN_INFO,
2499 LOG_FIP,
2500 "2864 On devloss tmo "
2501 "unreg in-use FCF and "
2502 "rescan FCF table\n");
2503 lpfc_unregister_fcf_rescan(phba);
2504 return;
2507 * Let next new FCF event trigger fast failover
2509 phba->hba_flag &= ~FCF_TS_INPROG;
2510 spin_unlock_irq(&phba->hbalock);
2511 return;
2514 * It has found a suitable FCF record that is not
2515 * the same as in-use FCF record, unregister the
2516 * in-use FCF record, replace the in-use FCF record
2517 * with the new FCF record, mark FCF fast failover
2518 * completed, and then start register the new FCF
2519 * record.
2522 /* Unregister the current in-use FCF record */
2523 lpfc_unregister_fcf(phba);
2525 /* Replace in-use record with the new record */
2526 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2527 "2842 Replace in-use FCF (x%x) "
2528 "with failover FCF (x%x)\n",
2529 phba->fcf.current_rec.fcf_indx,
2530 phba->fcf.failover_rec.fcf_indx);
2531 memcpy(&phba->fcf.current_rec,
2532 &phba->fcf.failover_rec,
2533 sizeof(struct lpfc_fcf_rec));
2535 * Mark the fast FCF failover rediscovery completed
2536 * and the start of the first round of the roundrobin
2537 * FCF failover.
2539 spin_lock_irq(&phba->hbalock);
2540 phba->fcf.fcf_flag &= ~FCF_REDISC_FOV;
2541 spin_unlock_irq(&phba->hbalock);
2542 /* Register to the new FCF record */
2543 lpfc_register_fcf(phba);
2544 } else {
2546 * In case of transaction period to fast FCF failover,
2547 * do nothing when search to the end of the FCF table.
2549 if ((phba->fcf.fcf_flag & FCF_REDISC_EVT) ||
2550 (phba->fcf.fcf_flag & FCF_REDISC_PEND))
2551 return;
2553 if (phba->cfg_fcf_failover_policy == LPFC_FCF_FOV &&
2554 phba->fcf.fcf_flag & FCF_IN_USE) {
2556 * In case the current in-use FCF record no
2557 * longer existed during FCF discovery that
2558 * was not triggered by fast FCF failover
2559 * process, treat it as fast FCF failover.
2561 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2562 "2841 In-use FCF record (x%x) "
2563 "not reported, entering fast "
2564 "FCF failover mode scanning.\n",
2565 phba->fcf.current_rec.fcf_indx);
2566 spin_lock_irq(&phba->hbalock);
2567 phba->fcf.fcf_flag |= FCF_REDISC_FOV;
2568 spin_unlock_irq(&phba->hbalock);
2569 lpfc_sli4_fcf_scan_read_fcf_rec(phba,
2570 LPFC_FCOE_FCF_GET_FIRST);
2571 return;
2573 /* Register to the new FCF record */
2574 lpfc_register_fcf(phba);
2576 } else
2577 lpfc_sli4_fcf_scan_read_fcf_rec(phba, next_fcf_index);
2578 return;
2580 out:
2581 lpfc_sli4_mbox_cmd_free(phba, mboxq);
2582 lpfc_register_fcf(phba);
2584 return;
2588 * lpfc_mbx_cmpl_fcf_rr_read_fcf_rec - fcf roundrobin read_fcf mbox cmpl hdler
2589 * @phba: pointer to lpfc hba data structure.
2590 * @mboxq: pointer to mailbox object.
2592 * This is the callback function for FLOGI failure roundrobin FCF failover
2593 * read FCF record mailbox command from the eligible FCF record bmask for
2594 * performing the failover. If the FCF read back is not valid/available, it
2595 * fails through to retrying FLOGI to the currently registered FCF again.
2596 * Otherwise, if the FCF read back is valid and available, it will set the
2597 * newly read FCF record to the failover FCF record, unregister currently
2598 * registered FCF record, copy the failover FCF record to the current
2599 * FCF record, and then register the current FCF record before proceeding
2600 * to trying FLOGI on the new failover FCF.
2602 void
2603 lpfc_mbx_cmpl_fcf_rr_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
2605 struct fcf_record *new_fcf_record;
2606 uint32_t boot_flag, addr_mode;
2607 uint16_t next_fcf_index, fcf_index;
2608 uint16_t current_fcf_index;
2609 uint16_t vlan_id;
2610 int rc;
2612 /* If link state is not up, stop the roundrobin failover process */
2613 if (phba->link_state < LPFC_LINK_UP) {
2614 spin_lock_irq(&phba->hbalock);
2615 phba->fcf.fcf_flag &= ~FCF_DISCOVERY;
2616 phba->hba_flag &= ~FCF_RR_INPROG;
2617 spin_unlock_irq(&phba->hbalock);
2618 goto out;
2621 /* Parse the FCF record from the non-embedded mailbox command */
2622 new_fcf_record = lpfc_sli4_fcf_rec_mbox_parse(phba, mboxq,
2623 &next_fcf_index);
2624 if (!new_fcf_record) {
2625 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
2626 "2766 Mailbox command READ_FCF_RECORD "
2627 "failed to retrieve a FCF record. "
2628 "hba_flg x%x fcf_flg x%x\n", phba->hba_flag,
2629 phba->fcf.fcf_flag);
2630 lpfc_unregister_fcf_rescan(phba);
2631 goto out;
2634 /* Get the needed parameters from FCF record */
2635 rc = lpfc_match_fcf_conn_list(phba, new_fcf_record, &boot_flag,
2636 &addr_mode, &vlan_id);
2638 /* Log the FCF record information if turned on */
2639 lpfc_sli4_log_fcf_record_info(phba, new_fcf_record, vlan_id,
2640 next_fcf_index);
2642 fcf_index = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record);
2643 if (!rc) {
2644 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2645 "2848 Remove ineligible FCF (x%x) from "
2646 "from roundrobin bmask\n", fcf_index);
2647 /* Clear roundrobin bmask bit for ineligible FCF */
2648 lpfc_sli4_fcf_rr_index_clear(phba, fcf_index);
2649 /* Perform next round of roundrobin FCF failover */
2650 fcf_index = lpfc_sli4_fcf_rr_next_index_get(phba);
2651 rc = lpfc_sli4_fcf_rr_next_proc(phba->pport, fcf_index);
2652 if (rc)
2653 goto out;
2654 goto error_out;
2657 if (fcf_index == phba->fcf.current_rec.fcf_indx) {
2658 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2659 "2760 Perform FLOGI roundrobin FCF failover: "
2660 "FCF (x%x) back to FCF (x%x)\n",
2661 phba->fcf.current_rec.fcf_indx, fcf_index);
2662 /* Wait 500 ms before retrying FLOGI to current FCF */
2663 msleep(500);
2664 lpfc_issue_init_vfi(phba->pport);
2665 goto out;
2668 /* Upload new FCF record to the failover FCF record */
2669 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2670 "2834 Update current FCF (x%x) with new FCF (x%x)\n",
2671 phba->fcf.failover_rec.fcf_indx, fcf_index);
2672 spin_lock_irq(&phba->hbalock);
2673 __lpfc_update_fcf_record(phba, &phba->fcf.failover_rec,
2674 new_fcf_record, addr_mode, vlan_id,
2675 (boot_flag ? BOOT_ENABLE : 0));
2676 spin_unlock_irq(&phba->hbalock);
2678 current_fcf_index = phba->fcf.current_rec.fcf_indx;
2680 /* Unregister the current in-use FCF record */
2681 lpfc_unregister_fcf(phba);
2683 /* Replace in-use record with the new record */
2684 memcpy(&phba->fcf.current_rec, &phba->fcf.failover_rec,
2685 sizeof(struct lpfc_fcf_rec));
2687 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2688 "2783 Perform FLOGI roundrobin FCF failover: FCF "
2689 "(x%x) to FCF (x%x)\n", current_fcf_index, fcf_index);
2691 error_out:
2692 lpfc_register_fcf(phba);
2693 out:
2694 lpfc_sli4_mbox_cmd_free(phba, mboxq);
2698 * lpfc_mbx_cmpl_read_fcf_rec - read fcf completion handler.
2699 * @phba: pointer to lpfc hba data structure.
2700 * @mboxq: pointer to mailbox object.
2702 * This is the callback function of read FCF record mailbox command for
2703 * updating the eligible FCF bmask for FLOGI failure roundrobin FCF
2704 * failover when a new FCF event happened. If the FCF read back is
2705 * valid/available and it passes the connection list check, it updates
2706 * the bmask for the eligible FCF record for roundrobin failover.
2708 void
2709 lpfc_mbx_cmpl_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
2711 struct fcf_record *new_fcf_record;
2712 uint32_t boot_flag, addr_mode;
2713 uint16_t fcf_index, next_fcf_index;
2714 uint16_t vlan_id;
2715 int rc;
2717 /* If link state is not up, no need to proceed */
2718 if (phba->link_state < LPFC_LINK_UP)
2719 goto out;
2721 /* If FCF discovery period is over, no need to proceed */
2722 if (!(phba->fcf.fcf_flag & FCF_DISCOVERY))
2723 goto out;
2725 /* Parse the FCF record from the non-embedded mailbox command */
2726 new_fcf_record = lpfc_sli4_fcf_rec_mbox_parse(phba, mboxq,
2727 &next_fcf_index);
2728 if (!new_fcf_record) {
2729 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2730 "2767 Mailbox command READ_FCF_RECORD "
2731 "failed to retrieve a FCF record.\n");
2732 goto out;
2735 /* Check the connection list for eligibility */
2736 rc = lpfc_match_fcf_conn_list(phba, new_fcf_record, &boot_flag,
2737 &addr_mode, &vlan_id);
2739 /* Log the FCF record information if turned on */
2740 lpfc_sli4_log_fcf_record_info(phba, new_fcf_record, vlan_id,
2741 next_fcf_index);
2743 if (!rc)
2744 goto out;
2746 /* Update the eligible FCF record index bmask */
2747 fcf_index = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record);
2749 rc = lpfc_sli4_fcf_pri_list_add(phba, fcf_index, new_fcf_record);
2751 out:
2752 lpfc_sli4_mbox_cmd_free(phba, mboxq);
2756 * lpfc_init_vfi_cmpl - Completion handler for init_vfi mbox command.
2757 * @phba: pointer to lpfc hba data structure.
2758 * @mboxq: pointer to mailbox data structure.
2760 * This function handles completion of init vfi mailbox command.
2762 static void
2763 lpfc_init_vfi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
2765 struct lpfc_vport *vport = mboxq->vport;
2768 * VFI not supported on interface type 0, just do the flogi
2769 * Also continue if the VFI is in use - just use the same one.
2771 if (mboxq->u.mb.mbxStatus &&
2772 (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) !=
2773 LPFC_SLI_INTF_IF_TYPE_0) &&
2774 mboxq->u.mb.mbxStatus != MBX_VFI_IN_USE) {
2775 lpfc_printf_vlog(vport, KERN_ERR,
2776 LOG_MBOX,
2777 "2891 Init VFI mailbox failed 0x%x\n",
2778 mboxq->u.mb.mbxStatus);
2779 mempool_free(mboxq, phba->mbox_mem_pool);
2780 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
2781 return;
2784 lpfc_initial_flogi(vport);
2785 mempool_free(mboxq, phba->mbox_mem_pool);
2786 return;
2790 * lpfc_issue_init_vfi - Issue init_vfi mailbox command.
2791 * @vport: pointer to lpfc_vport data structure.
2793 * This function issue a init_vfi mailbox command to initialize the VFI and
2794 * VPI for the physical port.
2796 void
2797 lpfc_issue_init_vfi(struct lpfc_vport *vport)
2799 LPFC_MBOXQ_t *mboxq;
2800 int rc;
2801 struct lpfc_hba *phba = vport->phba;
2803 mboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2804 if (!mboxq) {
2805 lpfc_printf_vlog(vport, KERN_ERR,
2806 LOG_MBOX, "2892 Failed to allocate "
2807 "init_vfi mailbox\n");
2808 return;
2810 lpfc_init_vfi(mboxq, vport);
2811 mboxq->mbox_cmpl = lpfc_init_vfi_cmpl;
2812 rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_NOWAIT);
2813 if (rc == MBX_NOT_FINISHED) {
2814 lpfc_printf_vlog(vport, KERN_ERR,
2815 LOG_MBOX, "2893 Failed to issue init_vfi mailbox\n");
2816 mempool_free(mboxq, vport->phba->mbox_mem_pool);
2821 * lpfc_init_vpi_cmpl - Completion handler for init_vpi mbox command.
2822 * @phba: pointer to lpfc hba data structure.
2823 * @mboxq: pointer to mailbox data structure.
2825 * This function handles completion of init vpi mailbox command.
2827 void
2828 lpfc_init_vpi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
2830 struct lpfc_vport *vport = mboxq->vport;
2831 struct lpfc_nodelist *ndlp;
2832 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2834 if (mboxq->u.mb.mbxStatus) {
2835 lpfc_printf_vlog(vport, KERN_ERR,
2836 LOG_MBOX,
2837 "2609 Init VPI mailbox failed 0x%x\n",
2838 mboxq->u.mb.mbxStatus);
2839 mempool_free(mboxq, phba->mbox_mem_pool);
2840 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
2841 return;
2843 spin_lock_irq(shost->host_lock);
2844 vport->fc_flag &= ~FC_VPORT_NEEDS_INIT_VPI;
2845 spin_unlock_irq(shost->host_lock);
2847 /* If this port is physical port or FDISC is done, do reg_vpi */
2848 if ((phba->pport == vport) || (vport->port_state == LPFC_FDISC)) {
2849 ndlp = lpfc_findnode_did(vport, Fabric_DID);
2850 if (!ndlp)
2851 lpfc_printf_vlog(vport, KERN_ERR,
2852 LOG_DISCOVERY,
2853 "2731 Cannot find fabric "
2854 "controller node\n");
2855 else
2856 lpfc_register_new_vport(phba, vport, ndlp);
2857 mempool_free(mboxq, phba->mbox_mem_pool);
2858 return;
2861 if (phba->link_flag & LS_NPIV_FAB_SUPPORTED)
2862 lpfc_initial_fdisc(vport);
2863 else {
2864 lpfc_vport_set_state(vport, FC_VPORT_NO_FABRIC_SUPP);
2865 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
2866 "2606 No NPIV Fabric support\n");
2868 mempool_free(mboxq, phba->mbox_mem_pool);
2869 return;
2873 * lpfc_issue_init_vpi - Issue init_vpi mailbox command.
2874 * @vport: pointer to lpfc_vport data structure.
2876 * This function issue a init_vpi mailbox command to initialize
2877 * VPI for the vport.
2879 void
2880 lpfc_issue_init_vpi(struct lpfc_vport *vport)
2882 LPFC_MBOXQ_t *mboxq;
2883 int rc, vpi;
2885 if ((vport->port_type != LPFC_PHYSICAL_PORT) && (!vport->vpi)) {
2886 vpi = lpfc_alloc_vpi(vport->phba);
2887 if (!vpi) {
2888 lpfc_printf_vlog(vport, KERN_ERR,
2889 LOG_MBOX,
2890 "3303 Failed to obtain vport vpi\n");
2891 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
2892 return;
2894 vport->vpi = vpi;
2897 mboxq = mempool_alloc(vport->phba->mbox_mem_pool, GFP_KERNEL);
2898 if (!mboxq) {
2899 lpfc_printf_vlog(vport, KERN_ERR,
2900 LOG_MBOX, "2607 Failed to allocate "
2901 "init_vpi mailbox\n");
2902 return;
2904 lpfc_init_vpi(vport->phba, mboxq, vport->vpi);
2905 mboxq->vport = vport;
2906 mboxq->mbox_cmpl = lpfc_init_vpi_cmpl;
2907 rc = lpfc_sli_issue_mbox(vport->phba, mboxq, MBX_NOWAIT);
2908 if (rc == MBX_NOT_FINISHED) {
2909 lpfc_printf_vlog(vport, KERN_ERR,
2910 LOG_MBOX, "2608 Failed to issue init_vpi mailbox\n");
2911 mempool_free(mboxq, vport->phba->mbox_mem_pool);
2916 * lpfc_start_fdiscs - send fdiscs for each vports on this port.
2917 * @phba: pointer to lpfc hba data structure.
2919 * This function loops through the list of vports on the @phba and issues an
2920 * FDISC if possible.
2922 void
2923 lpfc_start_fdiscs(struct lpfc_hba *phba)
2925 struct lpfc_vport **vports;
2926 int i;
2928 vports = lpfc_create_vport_work_array(phba);
2929 if (vports != NULL) {
2930 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
2931 if (vports[i]->port_type == LPFC_PHYSICAL_PORT)
2932 continue;
2933 /* There are no vpi for this vport */
2934 if (vports[i]->vpi > phba->max_vpi) {
2935 lpfc_vport_set_state(vports[i],
2936 FC_VPORT_FAILED);
2937 continue;
2939 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
2940 lpfc_vport_set_state(vports[i],
2941 FC_VPORT_LINKDOWN);
2942 continue;
2944 if (vports[i]->fc_flag & FC_VPORT_NEEDS_INIT_VPI) {
2945 lpfc_issue_init_vpi(vports[i]);
2946 continue;
2948 if (phba->link_flag & LS_NPIV_FAB_SUPPORTED)
2949 lpfc_initial_fdisc(vports[i]);
2950 else {
2951 lpfc_vport_set_state(vports[i],
2952 FC_VPORT_NO_FABRIC_SUPP);
2953 lpfc_printf_vlog(vports[i], KERN_ERR,
2954 LOG_ELS,
2955 "0259 No NPIV "
2956 "Fabric support\n");
2960 lpfc_destroy_vport_work_array(phba, vports);
2963 void
2964 lpfc_mbx_cmpl_reg_vfi(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
2966 struct lpfc_dmabuf *dmabuf = mboxq->ctx_buf;
2967 struct lpfc_vport *vport = mboxq->vport;
2968 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2971 * VFI not supported for interface type 0, so ignore any mailbox
2972 * error (except VFI in use) and continue with the discovery.
2974 if (mboxq->u.mb.mbxStatus &&
2975 (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) !=
2976 LPFC_SLI_INTF_IF_TYPE_0) &&
2977 mboxq->u.mb.mbxStatus != MBX_VFI_IN_USE) {
2978 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
2979 "2018 REG_VFI mbxStatus error x%x "
2980 "HBA state x%x\n",
2981 mboxq->u.mb.mbxStatus, vport->port_state);
2982 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
2983 /* FLOGI failed, use loop map to make discovery list */
2984 lpfc_disc_list_loopmap(vport);
2985 /* Start discovery */
2986 lpfc_disc_start(vport);
2987 goto out_free_mem;
2989 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
2990 goto out_free_mem;
2993 /* If the VFI is already registered, there is nothing else to do
2994 * Unless this was a VFI update and we are in PT2PT mode, then
2995 * we should drop through to set the port state to ready.
2997 if (vport->fc_flag & FC_VFI_REGISTERED)
2998 if (!(phba->sli_rev == LPFC_SLI_REV4 &&
2999 vport->fc_flag & FC_PT2PT))
3000 goto out_free_mem;
3002 /* The VPI is implicitly registered when the VFI is registered */
3003 spin_lock_irq(shost->host_lock);
3004 vport->vpi_state |= LPFC_VPI_REGISTERED;
3005 vport->fc_flag |= FC_VFI_REGISTERED;
3006 vport->fc_flag &= ~FC_VPORT_NEEDS_REG_VPI;
3007 vport->fc_flag &= ~FC_VPORT_NEEDS_INIT_VPI;
3008 spin_unlock_irq(shost->host_lock);
3010 /* In case SLI4 FC loopback test, we are ready */
3011 if ((phba->sli_rev == LPFC_SLI_REV4) &&
3012 (phba->link_flag & LS_LOOPBACK_MODE)) {
3013 phba->link_state = LPFC_HBA_READY;
3014 goto out_free_mem;
3017 lpfc_printf_vlog(vport, KERN_INFO, LOG_SLI,
3018 "3313 cmpl reg vfi port_state:%x fc_flag:%x myDid:%x "
3019 "alpacnt:%d LinkState:%x topology:%x\n",
3020 vport->port_state, vport->fc_flag, vport->fc_myDID,
3021 vport->phba->alpa_map[0],
3022 phba->link_state, phba->fc_topology);
3024 if (vport->port_state == LPFC_FABRIC_CFG_LINK) {
3026 * For private loop or for NPort pt2pt,
3027 * just start discovery and we are done.
3029 if ((vport->fc_flag & FC_PT2PT) ||
3030 ((phba->fc_topology == LPFC_TOPOLOGY_LOOP) &&
3031 !(vport->fc_flag & FC_PUBLIC_LOOP))) {
3033 /* Use loop map to make discovery list */
3034 lpfc_disc_list_loopmap(vport);
3035 /* Start discovery */
3036 if (vport->fc_flag & FC_PT2PT)
3037 vport->port_state = LPFC_VPORT_READY;
3038 else
3039 lpfc_disc_start(vport);
3040 } else {
3041 lpfc_start_fdiscs(phba);
3042 lpfc_do_scr_ns_plogi(phba, vport);
3046 out_free_mem:
3047 mempool_free(mboxq, phba->mbox_mem_pool);
3048 if (dmabuf) {
3049 lpfc_mbuf_free(phba, dmabuf->virt, dmabuf->phys);
3050 kfree(dmabuf);
3052 return;
3055 static void
3056 lpfc_mbx_cmpl_read_sparam(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
3058 MAILBOX_t *mb = &pmb->u.mb;
3059 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *)pmb->ctx_buf;
3060 struct lpfc_vport *vport = pmb->vport;
3061 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3062 struct serv_parm *sp = &vport->fc_sparam;
3063 uint32_t ed_tov;
3065 /* Check for error */
3066 if (mb->mbxStatus) {
3067 /* READ_SPARAM mbox error <mbxStatus> state <hba_state> */
3068 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
3069 "0319 READ_SPARAM mbxStatus error x%x "
3070 "hba state x%x>\n",
3071 mb->mbxStatus, vport->port_state);
3072 lpfc_linkdown(phba);
3073 goto out;
3076 memcpy((uint8_t *) &vport->fc_sparam, (uint8_t *) mp->virt,
3077 sizeof (struct serv_parm));
3079 ed_tov = be32_to_cpu(sp->cmn.e_d_tov);
3080 if (sp->cmn.edtovResolution) /* E_D_TOV ticks are in nanoseconds */
3081 ed_tov = (ed_tov + 999999) / 1000000;
3083 phba->fc_edtov = ed_tov;
3084 phba->fc_ratov = (2 * ed_tov) / 1000;
3085 if (phba->fc_ratov < FF_DEF_RATOV) {
3086 /* RA_TOV should be atleast 10sec for initial flogi */
3087 phba->fc_ratov = FF_DEF_RATOV;
3090 lpfc_update_vport_wwn(vport);
3091 fc_host_port_name(shost) = wwn_to_u64(vport->fc_portname.u.wwn);
3092 if (vport->port_type == LPFC_PHYSICAL_PORT) {
3093 memcpy(&phba->wwnn, &vport->fc_nodename, sizeof(phba->wwnn));
3094 memcpy(&phba->wwpn, &vport->fc_portname, sizeof(phba->wwnn));
3097 lpfc_mbuf_free(phba, mp->virt, mp->phys);
3098 kfree(mp);
3099 mempool_free(pmb, phba->mbox_mem_pool);
3100 return;
3102 out:
3103 pmb->ctx_buf = NULL;
3104 lpfc_mbuf_free(phba, mp->virt, mp->phys);
3105 kfree(mp);
3106 lpfc_issue_clear_la(phba, vport);
3107 mempool_free(pmb, phba->mbox_mem_pool);
3108 return;
3111 static void
3112 lpfc_mbx_process_link_up(struct lpfc_hba *phba, struct lpfc_mbx_read_top *la)
3114 struct lpfc_vport *vport = phba->pport;
3115 LPFC_MBOXQ_t *sparam_mbox, *cfglink_mbox = NULL;
3116 struct Scsi_Host *shost;
3117 int i;
3118 struct lpfc_dmabuf *mp;
3119 int rc;
3120 struct fcf_record *fcf_record;
3121 uint32_t fc_flags = 0;
3123 spin_lock_irq(&phba->hbalock);
3124 phba->fc_linkspeed = bf_get(lpfc_mbx_read_top_link_spd, la);
3126 if (!(phba->hba_flag & HBA_FCOE_MODE)) {
3127 switch (bf_get(lpfc_mbx_read_top_link_spd, la)) {
3128 case LPFC_LINK_SPEED_1GHZ:
3129 case LPFC_LINK_SPEED_2GHZ:
3130 case LPFC_LINK_SPEED_4GHZ:
3131 case LPFC_LINK_SPEED_8GHZ:
3132 case LPFC_LINK_SPEED_10GHZ:
3133 case LPFC_LINK_SPEED_16GHZ:
3134 case LPFC_LINK_SPEED_32GHZ:
3135 case LPFC_LINK_SPEED_64GHZ:
3136 case LPFC_LINK_SPEED_128GHZ:
3137 break;
3138 default:
3139 phba->fc_linkspeed = LPFC_LINK_SPEED_UNKNOWN;
3140 break;
3144 if (phba->fc_topology &&
3145 phba->fc_topology != bf_get(lpfc_mbx_read_top_topology, la)) {
3146 lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
3147 "3314 Toplogy changed was 0x%x is 0x%x\n",
3148 phba->fc_topology,
3149 bf_get(lpfc_mbx_read_top_topology, la));
3150 phba->fc_topology_changed = 1;
3153 phba->fc_topology = bf_get(lpfc_mbx_read_top_topology, la);
3154 phba->link_flag &= ~LS_NPIV_FAB_SUPPORTED;
3156 shost = lpfc_shost_from_vport(vport);
3157 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
3158 phba->sli3_options &= ~LPFC_SLI3_NPIV_ENABLED;
3160 /* if npiv is enabled and this adapter supports npiv log
3161 * a message that npiv is not supported in this topology
3163 if (phba->cfg_enable_npiv && phba->max_vpi)
3164 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
3165 "1309 Link Up Event npiv not supported in loop "
3166 "topology\n");
3167 /* Get Loop Map information */
3168 if (bf_get(lpfc_mbx_read_top_il, la))
3169 fc_flags |= FC_LBIT;
3171 vport->fc_myDID = bf_get(lpfc_mbx_read_top_alpa_granted, la);
3172 i = la->lilpBde64.tus.f.bdeSize;
3174 if (i == 0) {
3175 phba->alpa_map[0] = 0;
3176 } else {
3177 if (vport->cfg_log_verbose & LOG_LINK_EVENT) {
3178 int numalpa, j, k;
3179 union {
3180 uint8_t pamap[16];
3181 struct {
3182 uint32_t wd1;
3183 uint32_t wd2;
3184 uint32_t wd3;
3185 uint32_t wd4;
3186 } pa;
3187 } un;
3188 numalpa = phba->alpa_map[0];
3189 j = 0;
3190 while (j < numalpa) {
3191 memset(un.pamap, 0, 16);
3192 for (k = 1; j < numalpa; k++) {
3193 un.pamap[k - 1] =
3194 phba->alpa_map[j + 1];
3195 j++;
3196 if (k == 16)
3197 break;
3199 /* Link Up Event ALPA map */
3200 lpfc_printf_log(phba,
3201 KERN_WARNING,
3202 LOG_LINK_EVENT,
3203 "1304 Link Up Event "
3204 "ALPA map Data: x%x "
3205 "x%x x%x x%x\n",
3206 un.pa.wd1, un.pa.wd2,
3207 un.pa.wd3, un.pa.wd4);
3211 } else {
3212 if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)) {
3213 if (phba->max_vpi && phba->cfg_enable_npiv &&
3214 (phba->sli_rev >= LPFC_SLI_REV3))
3215 phba->sli3_options |= LPFC_SLI3_NPIV_ENABLED;
3217 vport->fc_myDID = phba->fc_pref_DID;
3218 fc_flags |= FC_LBIT;
3220 spin_unlock_irq(&phba->hbalock);
3222 if (fc_flags) {
3223 spin_lock_irq(shost->host_lock);
3224 vport->fc_flag |= fc_flags;
3225 spin_unlock_irq(shost->host_lock);
3228 lpfc_linkup(phba);
3229 sparam_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
3230 if (!sparam_mbox)
3231 goto out;
3233 rc = lpfc_read_sparam(phba, sparam_mbox, 0);
3234 if (rc) {
3235 mempool_free(sparam_mbox, phba->mbox_mem_pool);
3236 goto out;
3238 sparam_mbox->vport = vport;
3239 sparam_mbox->mbox_cmpl = lpfc_mbx_cmpl_read_sparam;
3240 rc = lpfc_sli_issue_mbox(phba, sparam_mbox, MBX_NOWAIT);
3241 if (rc == MBX_NOT_FINISHED) {
3242 mp = (struct lpfc_dmabuf *)sparam_mbox->ctx_buf;
3243 lpfc_mbuf_free(phba, mp->virt, mp->phys);
3244 kfree(mp);
3245 mempool_free(sparam_mbox, phba->mbox_mem_pool);
3246 goto out;
3249 if (!(phba->hba_flag & HBA_FCOE_MODE)) {
3250 cfglink_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
3251 if (!cfglink_mbox)
3252 goto out;
3253 vport->port_state = LPFC_LOCAL_CFG_LINK;
3254 lpfc_config_link(phba, cfglink_mbox);
3255 cfglink_mbox->vport = vport;
3256 cfglink_mbox->mbox_cmpl = lpfc_mbx_cmpl_local_config_link;
3257 rc = lpfc_sli_issue_mbox(phba, cfglink_mbox, MBX_NOWAIT);
3258 if (rc == MBX_NOT_FINISHED) {
3259 mempool_free(cfglink_mbox, phba->mbox_mem_pool);
3260 goto out;
3262 } else {
3263 vport->port_state = LPFC_VPORT_UNKNOWN;
3265 * Add the driver's default FCF record at FCF index 0 now. This
3266 * is phase 1 implementation that support FCF index 0 and driver
3267 * defaults.
3269 if (!(phba->hba_flag & HBA_FIP_SUPPORT)) {
3270 fcf_record = kzalloc(sizeof(struct fcf_record),
3271 GFP_KERNEL);
3272 if (unlikely(!fcf_record)) {
3273 lpfc_printf_log(phba, KERN_ERR,
3274 LOG_MBOX | LOG_SLI,
3275 "2554 Could not allocate memory for "
3276 "fcf record\n");
3277 rc = -ENODEV;
3278 goto out;
3281 lpfc_sli4_build_dflt_fcf_record(phba, fcf_record,
3282 LPFC_FCOE_FCF_DEF_INDEX);
3283 rc = lpfc_sli4_add_fcf_record(phba, fcf_record);
3284 if (unlikely(rc)) {
3285 lpfc_printf_log(phba, KERN_ERR,
3286 LOG_MBOX | LOG_SLI,
3287 "2013 Could not manually add FCF "
3288 "record 0, status %d\n", rc);
3289 rc = -ENODEV;
3290 kfree(fcf_record);
3291 goto out;
3293 kfree(fcf_record);
3296 * The driver is expected to do FIP/FCF. Call the port
3297 * and get the FCF Table.
3299 spin_lock_irq(&phba->hbalock);
3300 if (phba->hba_flag & FCF_TS_INPROG) {
3301 spin_unlock_irq(&phba->hbalock);
3302 return;
3304 /* This is the initial FCF discovery scan */
3305 phba->fcf.fcf_flag |= FCF_INIT_DISC;
3306 spin_unlock_irq(&phba->hbalock);
3307 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY,
3308 "2778 Start FCF table scan at linkup\n");
3309 rc = lpfc_sli4_fcf_scan_read_fcf_rec(phba,
3310 LPFC_FCOE_FCF_GET_FIRST);
3311 if (rc) {
3312 spin_lock_irq(&phba->hbalock);
3313 phba->fcf.fcf_flag &= ~FCF_INIT_DISC;
3314 spin_unlock_irq(&phba->hbalock);
3315 goto out;
3317 /* Reset FCF roundrobin bmask for new discovery */
3318 lpfc_sli4_clear_fcf_rr_bmask(phba);
3321 return;
3322 out:
3323 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
3324 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
3325 "0263 Discovery Mailbox error: state: 0x%x : %p %p\n",
3326 vport->port_state, sparam_mbox, cfglink_mbox);
3327 lpfc_issue_clear_la(phba, vport);
3328 return;
3331 static void
3332 lpfc_enable_la(struct lpfc_hba *phba)
3334 uint32_t control;
3335 struct lpfc_sli *psli = &phba->sli;
3336 spin_lock_irq(&phba->hbalock);
3337 psli->sli_flag |= LPFC_PROCESS_LA;
3338 if (phba->sli_rev <= LPFC_SLI_REV3) {
3339 control = readl(phba->HCregaddr);
3340 control |= HC_LAINT_ENA;
3341 writel(control, phba->HCregaddr);
3342 readl(phba->HCregaddr); /* flush */
3344 spin_unlock_irq(&phba->hbalock);
3347 static void
3348 lpfc_mbx_issue_link_down(struct lpfc_hba *phba)
3350 lpfc_linkdown(phba);
3351 lpfc_enable_la(phba);
3352 lpfc_unregister_unused_fcf(phba);
3353 /* turn on Link Attention interrupts - no CLEAR_LA needed */
3358 * This routine handles processing a READ_TOPOLOGY mailbox
3359 * command upon completion. It is setup in the LPFC_MBOXQ
3360 * as the completion routine when the command is
3361 * handed off to the SLI layer. SLI4 only.
3363 void
3364 lpfc_mbx_cmpl_read_topology(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
3366 struct lpfc_vport *vport = pmb->vport;
3367 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3368 struct lpfc_mbx_read_top *la;
3369 struct lpfc_sli_ring *pring;
3370 MAILBOX_t *mb = &pmb->u.mb;
3371 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *)(pmb->ctx_buf);
3372 uint8_t attn_type;
3374 /* Unblock ELS traffic */
3375 pring = lpfc_phba_elsring(phba);
3376 if (pring)
3377 pring->flag &= ~LPFC_STOP_IOCB_EVENT;
3379 /* Check for error */
3380 if (mb->mbxStatus) {
3381 lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT,
3382 "1307 READ_LA mbox error x%x state x%x\n",
3383 mb->mbxStatus, vport->port_state);
3384 lpfc_mbx_issue_link_down(phba);
3385 phba->link_state = LPFC_HBA_ERROR;
3386 goto lpfc_mbx_cmpl_read_topology_free_mbuf;
3389 la = (struct lpfc_mbx_read_top *) &pmb->u.mb.un.varReadTop;
3390 attn_type = bf_get(lpfc_mbx_read_top_att_type, la);
3392 memcpy(&phba->alpa_map[0], mp->virt, 128);
3394 spin_lock_irq(shost->host_lock);
3395 if (bf_get(lpfc_mbx_read_top_pb, la))
3396 vport->fc_flag |= FC_BYPASSED_MODE;
3397 else
3398 vport->fc_flag &= ~FC_BYPASSED_MODE;
3399 spin_unlock_irq(shost->host_lock);
3401 if (phba->fc_eventTag <= la->eventTag) {
3402 phba->fc_stat.LinkMultiEvent++;
3403 if (attn_type == LPFC_ATT_LINK_UP)
3404 if (phba->fc_eventTag != 0)
3405 lpfc_linkdown(phba);
3408 phba->fc_eventTag = la->eventTag;
3409 if (phba->sli_rev < LPFC_SLI_REV4) {
3410 spin_lock_irq(&phba->hbalock);
3411 if (bf_get(lpfc_mbx_read_top_mm, la))
3412 phba->sli.sli_flag |= LPFC_MENLO_MAINT;
3413 else
3414 phba->sli.sli_flag &= ~LPFC_MENLO_MAINT;
3415 spin_unlock_irq(&phba->hbalock);
3418 phba->link_events++;
3419 if ((attn_type == LPFC_ATT_LINK_UP) &&
3420 !(phba->sli.sli_flag & LPFC_MENLO_MAINT)) {
3421 phba->fc_stat.LinkUp++;
3422 if (phba->link_flag & LS_LOOPBACK_MODE) {
3423 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
3424 "1306 Link Up Event in loop back mode "
3425 "x%x received Data: x%x x%x x%x x%x\n",
3426 la->eventTag, phba->fc_eventTag,
3427 bf_get(lpfc_mbx_read_top_alpa_granted,
3428 la),
3429 bf_get(lpfc_mbx_read_top_link_spd, la),
3430 phba->alpa_map[0]);
3431 } else {
3432 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
3433 "1303 Link Up Event x%x received "
3434 "Data: x%x x%x x%x x%x x%x x%x %d\n",
3435 la->eventTag, phba->fc_eventTag,
3436 bf_get(lpfc_mbx_read_top_alpa_granted,
3437 la),
3438 bf_get(lpfc_mbx_read_top_link_spd, la),
3439 phba->alpa_map[0],
3440 bf_get(lpfc_mbx_read_top_mm, la),
3441 bf_get(lpfc_mbx_read_top_fa, la),
3442 phba->wait_4_mlo_maint_flg);
3444 lpfc_mbx_process_link_up(phba, la);
3445 } else if (attn_type == LPFC_ATT_LINK_DOWN ||
3446 attn_type == LPFC_ATT_UNEXP_WWPN) {
3447 phba->fc_stat.LinkDown++;
3448 if (phba->link_flag & LS_LOOPBACK_MODE)
3449 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
3450 "1308 Link Down Event in loop back mode "
3451 "x%x received "
3452 "Data: x%x x%x x%x\n",
3453 la->eventTag, phba->fc_eventTag,
3454 phba->pport->port_state, vport->fc_flag);
3455 else if (attn_type == LPFC_ATT_UNEXP_WWPN)
3456 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
3457 "1313 Link Down UNEXP WWPN Event x%x received "
3458 "Data: x%x x%x x%x x%x x%x\n",
3459 la->eventTag, phba->fc_eventTag,
3460 phba->pport->port_state, vport->fc_flag,
3461 bf_get(lpfc_mbx_read_top_mm, la),
3462 bf_get(lpfc_mbx_read_top_fa, la));
3463 else
3464 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
3465 "1305 Link Down Event x%x received "
3466 "Data: x%x x%x x%x x%x x%x\n",
3467 la->eventTag, phba->fc_eventTag,
3468 phba->pport->port_state, vport->fc_flag,
3469 bf_get(lpfc_mbx_read_top_mm, la),
3470 bf_get(lpfc_mbx_read_top_fa, la));
3471 lpfc_mbx_issue_link_down(phba);
3473 if (phba->sli.sli_flag & LPFC_MENLO_MAINT &&
3474 attn_type == LPFC_ATT_LINK_UP) {
3475 if (phba->link_state != LPFC_LINK_DOWN) {
3476 phba->fc_stat.LinkDown++;
3477 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
3478 "1312 Link Down Event x%x received "
3479 "Data: x%x x%x x%x\n",
3480 la->eventTag, phba->fc_eventTag,
3481 phba->pport->port_state, vport->fc_flag);
3482 lpfc_mbx_issue_link_down(phba);
3483 } else
3484 lpfc_enable_la(phba);
3486 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
3487 "1310 Menlo Maint Mode Link up Event x%x rcvd "
3488 "Data: x%x x%x x%x\n",
3489 la->eventTag, phba->fc_eventTag,
3490 phba->pport->port_state, vport->fc_flag);
3492 * The cmnd that triggered this will be waiting for this
3493 * signal.
3495 /* WAKEUP for MENLO_SET_MODE or MENLO_RESET command. */
3496 if (phba->wait_4_mlo_maint_flg) {
3497 phba->wait_4_mlo_maint_flg = 0;
3498 wake_up_interruptible(&phba->wait_4_mlo_m_q);
3502 if ((phba->sli_rev < LPFC_SLI_REV4) &&
3503 bf_get(lpfc_mbx_read_top_fa, la)) {
3504 if (phba->sli.sli_flag & LPFC_MENLO_MAINT)
3505 lpfc_issue_clear_la(phba, vport);
3506 lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT,
3507 "1311 fa %d\n",
3508 bf_get(lpfc_mbx_read_top_fa, la));
3511 lpfc_mbx_cmpl_read_topology_free_mbuf:
3512 lpfc_mbuf_free(phba, mp->virt, mp->phys);
3513 kfree(mp);
3514 mempool_free(pmb, phba->mbox_mem_pool);
3515 return;
3519 * This routine handles processing a REG_LOGIN mailbox
3520 * command upon completion. It is setup in the LPFC_MBOXQ
3521 * as the completion routine when the command is
3522 * handed off to the SLI layer.
3524 void
3525 lpfc_mbx_cmpl_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
3527 struct lpfc_vport *vport = pmb->vport;
3528 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *)(pmb->ctx_buf);
3529 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *)pmb->ctx_ndlp;
3530 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3532 pmb->ctx_buf = NULL;
3533 pmb->ctx_ndlp = NULL;
3535 lpfc_printf_vlog(vport, KERN_INFO, LOG_SLI,
3536 "0002 rpi:%x DID:%x flg:%x %d map:%x %p\n",
3537 ndlp->nlp_rpi, ndlp->nlp_DID, ndlp->nlp_flag,
3538 kref_read(&ndlp->kref),
3539 ndlp->nlp_usg_map, ndlp);
3540 if (ndlp->nlp_flag & NLP_REG_LOGIN_SEND)
3541 ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND;
3543 if (ndlp->nlp_flag & NLP_IGNR_REG_CMPL ||
3544 ndlp->nlp_state != NLP_STE_REG_LOGIN_ISSUE) {
3545 /* We rcvd a rscn after issuing this
3546 * mbox reg login, we may have cycled
3547 * back through the state and be
3548 * back at reg login state so this
3549 * mbox needs to be ignored becase
3550 * there is another reg login in
3551 * process.
3553 spin_lock_irq(shost->host_lock);
3554 ndlp->nlp_flag &= ~NLP_IGNR_REG_CMPL;
3555 spin_unlock_irq(shost->host_lock);
3558 * We cannot leave the RPI registered because
3559 * if we go thru discovery again for this ndlp
3560 * a subsequent REG_RPI will fail.
3562 ndlp->nlp_flag |= NLP_RPI_REGISTERED;
3563 lpfc_unreg_rpi(vport, ndlp);
3566 /* Call state machine */
3567 lpfc_disc_state_machine(vport, ndlp, pmb, NLP_EVT_CMPL_REG_LOGIN);
3569 lpfc_mbuf_free(phba, mp->virt, mp->phys);
3570 kfree(mp);
3571 mempool_free(pmb, phba->mbox_mem_pool);
3572 /* decrement the node reference count held for this callback
3573 * function.
3575 lpfc_nlp_put(ndlp);
3577 return;
3580 static void
3581 lpfc_mbx_cmpl_unreg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
3583 MAILBOX_t *mb = &pmb->u.mb;
3584 struct lpfc_vport *vport = pmb->vport;
3585 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3587 switch (mb->mbxStatus) {
3588 case 0x0011:
3589 case 0x0020:
3590 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
3591 "0911 cmpl_unreg_vpi, mb status = 0x%x\n",
3592 mb->mbxStatus);
3593 break;
3594 /* If VPI is busy, reset the HBA */
3595 case 0x9700:
3596 lpfc_printf_vlog(vport, KERN_ERR, LOG_NODE,
3597 "2798 Unreg_vpi failed vpi 0x%x, mb status = 0x%x\n",
3598 vport->vpi, mb->mbxStatus);
3599 if (!(phba->pport->load_flag & FC_UNLOADING))
3600 lpfc_workq_post_event(phba, NULL, NULL,
3601 LPFC_EVT_RESET_HBA);
3603 spin_lock_irq(shost->host_lock);
3604 vport->vpi_state &= ~LPFC_VPI_REGISTERED;
3605 vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
3606 spin_unlock_irq(shost->host_lock);
3607 vport->unreg_vpi_cmpl = VPORT_OK;
3608 mempool_free(pmb, phba->mbox_mem_pool);
3609 lpfc_cleanup_vports_rrqs(vport, NULL);
3611 * This shost reference might have been taken at the beginning of
3612 * lpfc_vport_delete()
3614 if ((vport->load_flag & FC_UNLOADING) && (vport != phba->pport))
3615 scsi_host_put(shost);
3619 lpfc_mbx_unreg_vpi(struct lpfc_vport *vport)
3621 struct lpfc_hba *phba = vport->phba;
3622 LPFC_MBOXQ_t *mbox;
3623 int rc;
3625 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
3626 if (!mbox)
3627 return 1;
3629 lpfc_unreg_vpi(phba, vport->vpi, mbox);
3630 mbox->vport = vport;
3631 mbox->mbox_cmpl = lpfc_mbx_cmpl_unreg_vpi;
3632 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
3633 if (rc == MBX_NOT_FINISHED) {
3634 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX | LOG_VPORT,
3635 "1800 Could not issue unreg_vpi\n");
3636 mempool_free(mbox, phba->mbox_mem_pool);
3637 vport->unreg_vpi_cmpl = VPORT_ERROR;
3638 return rc;
3640 return 0;
3643 static void
3644 lpfc_mbx_cmpl_reg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
3646 struct lpfc_vport *vport = pmb->vport;
3647 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3648 MAILBOX_t *mb = &pmb->u.mb;
3650 switch (mb->mbxStatus) {
3651 case 0x0011:
3652 case 0x9601:
3653 case 0x9602:
3654 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
3655 "0912 cmpl_reg_vpi, mb status = 0x%x\n",
3656 mb->mbxStatus);
3657 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
3658 spin_lock_irq(shost->host_lock);
3659 vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
3660 spin_unlock_irq(shost->host_lock);
3661 vport->fc_myDID = 0;
3663 if ((phba->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) ||
3664 (phba->cfg_enable_fc4_type == LPFC_ENABLE_NVME)) {
3665 if (phba->nvmet_support)
3666 lpfc_nvmet_update_targetport(phba);
3667 else
3668 lpfc_nvme_update_localport(vport);
3670 goto out;
3673 spin_lock_irq(shost->host_lock);
3674 vport->vpi_state |= LPFC_VPI_REGISTERED;
3675 vport->fc_flag &= ~FC_VPORT_NEEDS_REG_VPI;
3676 spin_unlock_irq(shost->host_lock);
3677 vport->num_disc_nodes = 0;
3678 /* go thru NPR list and issue ELS PLOGIs */
3679 if (vport->fc_npr_cnt)
3680 lpfc_els_disc_plogi(vport);
3682 if (!vport->num_disc_nodes) {
3683 spin_lock_irq(shost->host_lock);
3684 vport->fc_flag &= ~FC_NDISC_ACTIVE;
3685 spin_unlock_irq(shost->host_lock);
3686 lpfc_can_disctmo(vport);
3688 vport->port_state = LPFC_VPORT_READY;
3690 out:
3691 mempool_free(pmb, phba->mbox_mem_pool);
3692 return;
3696 * lpfc_create_static_vport - Read HBA config region to create static vports.
3697 * @phba: pointer to lpfc hba data structure.
3699 * This routine issue a DUMP mailbox command for config region 22 to get
3700 * the list of static vports to be created. The function create vports
3701 * based on the information returned from the HBA.
3703 void
3704 lpfc_create_static_vport(struct lpfc_hba *phba)
3706 LPFC_MBOXQ_t *pmb = NULL;
3707 MAILBOX_t *mb;
3708 struct static_vport_info *vport_info;
3709 int mbx_wait_rc = 0, i;
3710 struct fc_vport_identifiers vport_id;
3711 struct fc_vport *new_fc_vport;
3712 struct Scsi_Host *shost;
3713 struct lpfc_vport *vport;
3714 uint16_t offset = 0;
3715 uint8_t *vport_buff;
3716 struct lpfc_dmabuf *mp;
3717 uint32_t byte_count = 0;
3719 pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
3720 if (!pmb) {
3721 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
3722 "0542 lpfc_create_static_vport failed to"
3723 " allocate mailbox memory\n");
3724 return;
3726 memset(pmb, 0, sizeof(LPFC_MBOXQ_t));
3727 mb = &pmb->u.mb;
3729 vport_info = kzalloc(sizeof(struct static_vport_info), GFP_KERNEL);
3730 if (!vport_info) {
3731 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
3732 "0543 lpfc_create_static_vport failed to"
3733 " allocate vport_info\n");
3734 mempool_free(pmb, phba->mbox_mem_pool);
3735 return;
3738 vport_buff = (uint8_t *) vport_info;
3739 do {
3740 /* free dma buffer from previous round */
3741 if (pmb->ctx_buf) {
3742 mp = (struct lpfc_dmabuf *)pmb->ctx_buf;
3743 lpfc_mbuf_free(phba, mp->virt, mp->phys);
3744 kfree(mp);
3746 if (lpfc_dump_static_vport(phba, pmb, offset))
3747 goto out;
3749 pmb->vport = phba->pport;
3750 mbx_wait_rc = lpfc_sli_issue_mbox_wait(phba, pmb,
3751 LPFC_MBOX_TMO);
3753 if ((mbx_wait_rc != MBX_SUCCESS) || mb->mbxStatus) {
3754 lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
3755 "0544 lpfc_create_static_vport failed to"
3756 " issue dump mailbox command ret 0x%x "
3757 "status 0x%x\n",
3758 mbx_wait_rc, mb->mbxStatus);
3759 goto out;
3762 if (phba->sli_rev == LPFC_SLI_REV4) {
3763 byte_count = pmb->u.mqe.un.mb_words[5];
3764 mp = (struct lpfc_dmabuf *)pmb->ctx_buf;
3765 if (byte_count > sizeof(struct static_vport_info) -
3766 offset)
3767 byte_count = sizeof(struct static_vport_info)
3768 - offset;
3769 memcpy(vport_buff + offset, mp->virt, byte_count);
3770 offset += byte_count;
3771 } else {
3772 if (mb->un.varDmp.word_cnt >
3773 sizeof(struct static_vport_info) - offset)
3774 mb->un.varDmp.word_cnt =
3775 sizeof(struct static_vport_info)
3776 - offset;
3777 byte_count = mb->un.varDmp.word_cnt;
3778 lpfc_sli_pcimem_bcopy(((uint8_t *)mb) + DMP_RSP_OFFSET,
3779 vport_buff + offset,
3780 byte_count);
3782 offset += byte_count;
3785 } while (byte_count &&
3786 offset < sizeof(struct static_vport_info));
3789 if ((le32_to_cpu(vport_info->signature) != VPORT_INFO_SIG) ||
3790 ((le32_to_cpu(vport_info->rev) & VPORT_INFO_REV_MASK)
3791 != VPORT_INFO_REV)) {
3792 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
3793 "0545 lpfc_create_static_vport bad"
3794 " information header 0x%x 0x%x\n",
3795 le32_to_cpu(vport_info->signature),
3796 le32_to_cpu(vport_info->rev) & VPORT_INFO_REV_MASK);
3798 goto out;
3801 shost = lpfc_shost_from_vport(phba->pport);
3803 for (i = 0; i < MAX_STATIC_VPORT_COUNT; i++) {
3804 memset(&vport_id, 0, sizeof(vport_id));
3805 vport_id.port_name = wwn_to_u64(vport_info->vport_list[i].wwpn);
3806 vport_id.node_name = wwn_to_u64(vport_info->vport_list[i].wwnn);
3807 if (!vport_id.port_name || !vport_id.node_name)
3808 continue;
3810 vport_id.roles = FC_PORT_ROLE_FCP_INITIATOR;
3811 vport_id.vport_type = FC_PORTTYPE_NPIV;
3812 vport_id.disable = false;
3813 new_fc_vport = fc_vport_create(shost, 0, &vport_id);
3815 if (!new_fc_vport) {
3816 lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
3817 "0546 lpfc_create_static_vport failed to"
3818 " create vport\n");
3819 continue;
3822 vport = *(struct lpfc_vport **)new_fc_vport->dd_data;
3823 vport->vport_flag |= STATIC_VPORT;
3826 out:
3827 kfree(vport_info);
3828 if (mbx_wait_rc != MBX_TIMEOUT) {
3829 if (pmb->ctx_buf) {
3830 mp = (struct lpfc_dmabuf *)pmb->ctx_buf;
3831 lpfc_mbuf_free(phba, mp->virt, mp->phys);
3832 kfree(mp);
3834 mempool_free(pmb, phba->mbox_mem_pool);
3837 return;
3841 * This routine handles processing a Fabric REG_LOGIN mailbox
3842 * command upon completion. It is setup in the LPFC_MBOXQ
3843 * as the completion routine when the command is
3844 * handed off to the SLI layer.
3846 void
3847 lpfc_mbx_cmpl_fabric_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
3849 struct lpfc_vport *vport = pmb->vport;
3850 MAILBOX_t *mb = &pmb->u.mb;
3851 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *)(pmb->ctx_buf);
3852 struct lpfc_nodelist *ndlp;
3853 struct Scsi_Host *shost;
3855 ndlp = (struct lpfc_nodelist *)pmb->ctx_ndlp;
3856 pmb->ctx_ndlp = NULL;
3857 pmb->ctx_buf = NULL;
3859 if (mb->mbxStatus) {
3860 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
3861 "0258 Register Fabric login error: 0x%x\n",
3862 mb->mbxStatus);
3863 lpfc_mbuf_free(phba, mp->virt, mp->phys);
3864 kfree(mp);
3865 mempool_free(pmb, phba->mbox_mem_pool);
3867 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
3868 /* FLOGI failed, use loop map to make discovery list */
3869 lpfc_disc_list_loopmap(vport);
3871 /* Start discovery */
3872 lpfc_disc_start(vport);
3873 /* Decrement the reference count to ndlp after the
3874 * reference to the ndlp are done.
3876 lpfc_nlp_put(ndlp);
3877 return;
3880 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
3881 /* Decrement the reference count to ndlp after the reference
3882 * to the ndlp are done.
3884 lpfc_nlp_put(ndlp);
3885 return;
3888 if (phba->sli_rev < LPFC_SLI_REV4)
3889 ndlp->nlp_rpi = mb->un.varWords[0];
3890 ndlp->nlp_flag |= NLP_RPI_REGISTERED;
3891 ndlp->nlp_type |= NLP_FABRIC;
3892 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
3894 if (vport->port_state == LPFC_FABRIC_CFG_LINK) {
3895 /* when physical port receive logo donot start
3896 * vport discovery */
3897 if (!(vport->fc_flag & FC_LOGO_RCVD_DID_CHNG))
3898 lpfc_start_fdiscs(phba);
3899 else {
3900 shost = lpfc_shost_from_vport(vport);
3901 spin_lock_irq(shost->host_lock);
3902 vport->fc_flag &= ~FC_LOGO_RCVD_DID_CHNG ;
3903 spin_unlock_irq(shost->host_lock);
3905 lpfc_do_scr_ns_plogi(phba, vport);
3908 lpfc_mbuf_free(phba, mp->virt, mp->phys);
3909 kfree(mp);
3910 mempool_free(pmb, phba->mbox_mem_pool);
3912 /* Drop the reference count from the mbox at the end after
3913 * all the current reference to the ndlp have been done.
3915 lpfc_nlp_put(ndlp);
3916 return;
3920 * This routine will issue a GID_FT for each FC4 Type supported
3921 * by the driver. ALL GID_FTs must complete before discovery is started.
3924 lpfc_issue_gidft(struct lpfc_vport *vport)
3926 struct lpfc_hba *phba = vport->phba;
3928 /* Good status, issue CT Request to NameServer */
3929 if ((phba->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) ||
3930 (phba->cfg_enable_fc4_type == LPFC_ENABLE_FCP)) {
3931 if (lpfc_ns_cmd(vport, SLI_CTNS_GID_FT, 0, SLI_CTPT_FCP)) {
3932 /* Cannot issue NameServer FCP Query, so finish up
3933 * discovery
3935 lpfc_printf_vlog(vport, KERN_ERR, LOG_SLI,
3936 "0604 %s FC TYPE %x %s\n",
3937 "Failed to issue GID_FT to ",
3938 FC_TYPE_FCP,
3939 "Finishing discovery.");
3940 return 0;
3942 vport->gidft_inp++;
3945 if ((phba->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) ||
3946 (phba->cfg_enable_fc4_type == LPFC_ENABLE_NVME)) {
3947 if (lpfc_ns_cmd(vport, SLI_CTNS_GID_FT, 0, SLI_CTPT_NVME)) {
3948 /* Cannot issue NameServer NVME Query, so finish up
3949 * discovery
3951 lpfc_printf_vlog(vport, KERN_ERR, LOG_SLI,
3952 "0605 %s FC_TYPE %x %s %d\n",
3953 "Failed to issue GID_FT to ",
3954 FC_TYPE_NVME,
3955 "Finishing discovery: gidftinp ",
3956 vport->gidft_inp);
3957 if (vport->gidft_inp == 0)
3958 return 0;
3959 } else
3960 vport->gidft_inp++;
3962 return vport->gidft_inp;
3966 * lpfc_issue_gidpt - issue a GID_PT for all N_Ports
3967 * @vport: The virtual port for which this call is being executed.
3969 * This routine will issue a GID_PT to get a list of all N_Ports
3971 * Return value :
3972 * 0 - Failure to issue a GID_PT
3973 * 1 - GID_PT issued
3976 lpfc_issue_gidpt(struct lpfc_vport *vport)
3978 /* Good status, issue CT Request to NameServer */
3979 if (lpfc_ns_cmd(vport, SLI_CTNS_GID_PT, 0, GID_PT_N_PORT)) {
3980 /* Cannot issue NameServer FCP Query, so finish up
3981 * discovery
3983 lpfc_printf_vlog(vport, KERN_ERR, LOG_SLI,
3984 "0606 %s Port TYPE %x %s\n",
3985 "Failed to issue GID_PT to ",
3986 GID_PT_N_PORT,
3987 "Finishing discovery.");
3988 return 0;
3990 vport->gidft_inp++;
3991 return 1;
3995 * This routine handles processing a NameServer REG_LOGIN mailbox
3996 * command upon completion. It is setup in the LPFC_MBOXQ
3997 * as the completion routine when the command is
3998 * handed off to the SLI layer.
4000 void
4001 lpfc_mbx_cmpl_ns_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
4003 MAILBOX_t *mb = &pmb->u.mb;
4004 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *)(pmb->ctx_buf);
4005 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *)pmb->ctx_ndlp;
4006 struct lpfc_vport *vport = pmb->vport;
4008 pmb->ctx_buf = NULL;
4009 pmb->ctx_ndlp = NULL;
4010 vport->gidft_inp = 0;
4012 if (mb->mbxStatus) {
4013 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
4014 "0260 Register NameServer error: 0x%x\n",
4015 mb->mbxStatus);
4017 out:
4018 /* decrement the node reference count held for this
4019 * callback function.
4021 lpfc_nlp_put(ndlp);
4022 lpfc_mbuf_free(phba, mp->virt, mp->phys);
4023 kfree(mp);
4024 mempool_free(pmb, phba->mbox_mem_pool);
4026 /* If no other thread is using the ndlp, free it */
4027 lpfc_nlp_not_used(ndlp);
4029 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
4031 * RegLogin failed, use loop map to make discovery
4032 * list
4034 lpfc_disc_list_loopmap(vport);
4036 /* Start discovery */
4037 lpfc_disc_start(vport);
4038 return;
4040 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
4041 return;
4044 if (phba->sli_rev < LPFC_SLI_REV4)
4045 ndlp->nlp_rpi = mb->un.varWords[0];
4046 ndlp->nlp_flag |= NLP_RPI_REGISTERED;
4047 ndlp->nlp_type |= NLP_FABRIC;
4048 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
4049 lpfc_printf_vlog(vport, KERN_INFO, LOG_SLI,
4050 "0003 rpi:%x DID:%x flg:%x %d map%x %p\n",
4051 ndlp->nlp_rpi, ndlp->nlp_DID, ndlp->nlp_flag,
4052 kref_read(&ndlp->kref),
4053 ndlp->nlp_usg_map, ndlp);
4055 if (vport->port_state < LPFC_VPORT_READY) {
4056 /* Link up discovery requires Fabric registration. */
4057 lpfc_ns_cmd(vport, SLI_CTNS_RNN_ID, 0, 0);
4058 lpfc_ns_cmd(vport, SLI_CTNS_RSNN_NN, 0, 0);
4059 lpfc_ns_cmd(vport, SLI_CTNS_RSPN_ID, 0, 0);
4060 lpfc_ns_cmd(vport, SLI_CTNS_RFT_ID, 0, 0);
4062 if ((phba->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) ||
4063 (phba->cfg_enable_fc4_type == LPFC_ENABLE_FCP))
4064 lpfc_ns_cmd(vport, SLI_CTNS_RFF_ID, 0, FC_TYPE_FCP);
4066 if ((phba->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) ||
4067 (phba->cfg_enable_fc4_type == LPFC_ENABLE_NVME))
4068 lpfc_ns_cmd(vport, SLI_CTNS_RFF_ID, 0,
4069 FC_TYPE_NVME);
4071 /* Issue SCR just before NameServer GID_FT Query */
4072 lpfc_issue_els_scr(vport, SCR_DID, 0);
4075 vport->fc_ns_retry = 0;
4076 if (lpfc_issue_gidft(vport) == 0)
4077 goto out;
4080 * At this point in time we may need to wait for multiple
4081 * SLI_CTNS_GID_FT CT commands to complete before we start discovery.
4083 * decrement the node reference count held for this
4084 * callback function.
4086 lpfc_nlp_put(ndlp);
4087 lpfc_mbuf_free(phba, mp->virt, mp->phys);
4088 kfree(mp);
4089 mempool_free(pmb, phba->mbox_mem_pool);
4091 return;
4094 static void
4095 lpfc_register_remote_port(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
4097 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4098 struct fc_rport *rport;
4099 struct lpfc_rport_data *rdata;
4100 struct fc_rport_identifiers rport_ids;
4101 struct lpfc_hba *phba = vport->phba;
4103 if (phba->cfg_enable_fc4_type == LPFC_ENABLE_NVME)
4104 return;
4106 /* Remote port has reappeared. Re-register w/ FC transport */
4107 rport_ids.node_name = wwn_to_u64(ndlp->nlp_nodename.u.wwn);
4108 rport_ids.port_name = wwn_to_u64(ndlp->nlp_portname.u.wwn);
4109 rport_ids.port_id = ndlp->nlp_DID;
4110 rport_ids.roles = FC_RPORT_ROLE_UNKNOWN;
4113 * We leave our node pointer in rport->dd_data when we unregister a
4114 * FCP target port. But fc_remote_port_add zeros the space to which
4115 * rport->dd_data points. So, if we're reusing a previously
4116 * registered port, drop the reference that we took the last time we
4117 * registered the port.
4119 rport = ndlp->rport;
4120 if (rport) {
4121 rdata = rport->dd_data;
4122 /* break the link before dropping the ref */
4123 ndlp->rport = NULL;
4124 if (rdata) {
4125 if (rdata->pnode == ndlp)
4126 lpfc_nlp_put(ndlp);
4127 rdata->pnode = NULL;
4129 /* drop reference for earlier registeration */
4130 put_device(&rport->dev);
4133 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
4134 "rport add: did:x%x flg:x%x type x%x",
4135 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
4137 /* Don't add the remote port if unloading. */
4138 if (vport->load_flag & FC_UNLOADING)
4139 return;
4141 ndlp->rport = rport = fc_remote_port_add(shost, 0, &rport_ids);
4142 if (!rport || !get_device(&rport->dev)) {
4143 dev_printk(KERN_WARNING, &phba->pcidev->dev,
4144 "Warning: fc_remote_port_add failed\n");
4145 return;
4148 /* initialize static port data */
4149 rport->maxframe_size = ndlp->nlp_maxframe;
4150 rport->supported_classes = ndlp->nlp_class_sup;
4151 rdata = rport->dd_data;
4152 rdata->pnode = lpfc_nlp_get(ndlp);
4154 if (ndlp->nlp_type & NLP_FCP_TARGET)
4155 rport_ids.roles |= FC_RPORT_ROLE_FCP_TARGET;
4156 if (ndlp->nlp_type & NLP_FCP_INITIATOR)
4157 rport_ids.roles |= FC_RPORT_ROLE_FCP_INITIATOR;
4159 if (rport_ids.roles != FC_RPORT_ROLE_UNKNOWN)
4160 fc_remote_port_rolechg(rport, rport_ids.roles);
4162 lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE,
4163 "3183 rport register x%06x, rport %p role x%x\n",
4164 ndlp->nlp_DID, rport, rport_ids.roles);
4166 if ((rport->scsi_target_id != -1) &&
4167 (rport->scsi_target_id < LPFC_MAX_TARGET)) {
4168 ndlp->nlp_sid = rport->scsi_target_id;
4170 return;
4173 static void
4174 lpfc_unregister_remote_port(struct lpfc_nodelist *ndlp)
4176 struct fc_rport *rport = ndlp->rport;
4177 struct lpfc_vport *vport = ndlp->vport;
4178 struct lpfc_hba *phba = vport->phba;
4180 if (phba->cfg_enable_fc4_type == LPFC_ENABLE_NVME)
4181 return;
4183 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
4184 "rport delete: did:x%x flg:x%x type x%x",
4185 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
4187 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
4188 "3184 rport unregister x%06x, rport %p\n",
4189 ndlp->nlp_DID, rport);
4191 fc_remote_port_delete(rport);
4193 return;
4196 static void
4197 lpfc_nlp_counters(struct lpfc_vport *vport, int state, int count)
4199 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4201 spin_lock_irq(shost->host_lock);
4202 switch (state) {
4203 case NLP_STE_UNUSED_NODE:
4204 vport->fc_unused_cnt += count;
4205 break;
4206 case NLP_STE_PLOGI_ISSUE:
4207 vport->fc_plogi_cnt += count;
4208 break;
4209 case NLP_STE_ADISC_ISSUE:
4210 vport->fc_adisc_cnt += count;
4211 break;
4212 case NLP_STE_REG_LOGIN_ISSUE:
4213 vport->fc_reglogin_cnt += count;
4214 break;
4215 case NLP_STE_PRLI_ISSUE:
4216 vport->fc_prli_cnt += count;
4217 break;
4218 case NLP_STE_UNMAPPED_NODE:
4219 vport->fc_unmap_cnt += count;
4220 break;
4221 case NLP_STE_MAPPED_NODE:
4222 vport->fc_map_cnt += count;
4223 break;
4224 case NLP_STE_NPR_NODE:
4225 if (vport->fc_npr_cnt == 0 && count == -1)
4226 vport->fc_npr_cnt = 0;
4227 else
4228 vport->fc_npr_cnt += count;
4229 break;
4231 spin_unlock_irq(shost->host_lock);
4234 static void
4235 lpfc_nlp_state_cleanup(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
4236 int old_state, int new_state)
4238 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4240 if (new_state == NLP_STE_UNMAPPED_NODE) {
4241 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE;
4242 ndlp->nlp_type |= NLP_FC_NODE;
4244 if (new_state == NLP_STE_MAPPED_NODE)
4245 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE;
4246 if (new_state == NLP_STE_NPR_NODE)
4247 ndlp->nlp_flag &= ~NLP_RCV_PLOGI;
4249 /* FCP and NVME Transport interface */
4250 if ((old_state == NLP_STE_MAPPED_NODE ||
4251 old_state == NLP_STE_UNMAPPED_NODE)) {
4252 if (ndlp->rport) {
4253 vport->phba->nport_event_cnt++;
4254 lpfc_unregister_remote_port(ndlp);
4257 if (ndlp->nlp_fc4_type & NLP_FC4_NVME) {
4258 vport->phba->nport_event_cnt++;
4259 if (vport->phba->nvmet_support == 0) {
4260 /* Start devloss if target. */
4261 if (ndlp->nlp_type & NLP_NVME_TARGET)
4262 lpfc_nvme_unregister_port(vport, ndlp);
4263 } else {
4264 /* NVMET has no upcall. */
4265 lpfc_nlp_put(ndlp);
4270 /* FCP and NVME Transport interfaces */
4272 if (new_state == NLP_STE_MAPPED_NODE ||
4273 new_state == NLP_STE_UNMAPPED_NODE) {
4274 if (ndlp->nlp_fc4_type ||
4275 ndlp->nlp_DID == Fabric_DID ||
4276 ndlp->nlp_DID == NameServer_DID ||
4277 ndlp->nlp_DID == FDMI_DID) {
4278 vport->phba->nport_event_cnt++;
4280 * Tell the fc transport about the port, if we haven't
4281 * already. If we have, and it's a scsi entity, be
4283 lpfc_register_remote_port(vport, ndlp);
4285 /* Notify the NVME transport of this new rport. */
4286 if (vport->phba->sli_rev >= LPFC_SLI_REV4 &&
4287 ndlp->nlp_fc4_type & NLP_FC4_NVME) {
4288 if (vport->phba->nvmet_support == 0) {
4289 /* Register this rport with the transport.
4290 * Only NVME Target Rports are registered with
4291 * the transport.
4293 if (ndlp->nlp_type & NLP_NVME_TARGET) {
4294 vport->phba->nport_event_cnt++;
4295 lpfc_nvme_register_port(vport, ndlp);
4297 } else {
4298 /* Just take an NDLP ref count since the
4299 * target does not register rports.
4301 lpfc_nlp_get(ndlp);
4306 if ((new_state == NLP_STE_MAPPED_NODE) &&
4307 (vport->stat_data_enabled)) {
4309 * A new target is discovered, if there is no buffer for
4310 * statistical data collection allocate buffer.
4312 ndlp->lat_data = kcalloc(LPFC_MAX_BUCKET_COUNT,
4313 sizeof(struct lpfc_scsicmd_bkt),
4314 GFP_KERNEL);
4316 if (!ndlp->lat_data)
4317 lpfc_printf_vlog(vport, KERN_ERR, LOG_NODE,
4318 "0286 lpfc_nlp_state_cleanup failed to "
4319 "allocate statistical data buffer DID "
4320 "0x%x\n", ndlp->nlp_DID);
4323 * If the node just added to Mapped list was an FCP target,
4324 * but the remote port registration failed or assigned a target
4325 * id outside the presentable range - move the node to the
4326 * Unmapped List.
4328 if ((new_state == NLP_STE_MAPPED_NODE) &&
4329 (ndlp->nlp_type & NLP_FCP_TARGET) &&
4330 (!ndlp->rport ||
4331 ndlp->rport->scsi_target_id == -1 ||
4332 ndlp->rport->scsi_target_id >= LPFC_MAX_TARGET)) {
4333 spin_lock_irq(shost->host_lock);
4334 ndlp->nlp_flag |= NLP_TGT_NO_SCSIID;
4335 spin_unlock_irq(shost->host_lock);
4336 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
4340 static char *
4341 lpfc_nlp_state_name(char *buffer, size_t size, int state)
4343 static char *states[] = {
4344 [NLP_STE_UNUSED_NODE] = "UNUSED",
4345 [NLP_STE_PLOGI_ISSUE] = "PLOGI",
4346 [NLP_STE_ADISC_ISSUE] = "ADISC",
4347 [NLP_STE_REG_LOGIN_ISSUE] = "REGLOGIN",
4348 [NLP_STE_PRLI_ISSUE] = "PRLI",
4349 [NLP_STE_LOGO_ISSUE] = "LOGO",
4350 [NLP_STE_UNMAPPED_NODE] = "UNMAPPED",
4351 [NLP_STE_MAPPED_NODE] = "MAPPED",
4352 [NLP_STE_NPR_NODE] = "NPR",
4355 if (state < NLP_STE_MAX_STATE && states[state])
4356 strlcpy(buffer, states[state], size);
4357 else
4358 snprintf(buffer, size, "unknown (%d)", state);
4359 return buffer;
4362 void
4363 lpfc_nlp_set_state(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
4364 int state)
4366 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4367 int old_state = ndlp->nlp_state;
4368 char name1[16], name2[16];
4370 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
4371 "0904 NPort state transition x%06x, %s -> %s\n",
4372 ndlp->nlp_DID,
4373 lpfc_nlp_state_name(name1, sizeof(name1), old_state),
4374 lpfc_nlp_state_name(name2, sizeof(name2), state));
4376 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
4377 "node statechg did:x%x old:%d ste:%d",
4378 ndlp->nlp_DID, old_state, state);
4380 if (old_state == NLP_STE_NPR_NODE &&
4381 state != NLP_STE_NPR_NODE)
4382 lpfc_cancel_retry_delay_tmo(vport, ndlp);
4383 if (old_state == NLP_STE_UNMAPPED_NODE) {
4384 ndlp->nlp_flag &= ~NLP_TGT_NO_SCSIID;
4385 ndlp->nlp_type &= ~NLP_FC_NODE;
4388 if (list_empty(&ndlp->nlp_listp)) {
4389 spin_lock_irq(shost->host_lock);
4390 list_add_tail(&ndlp->nlp_listp, &vport->fc_nodes);
4391 spin_unlock_irq(shost->host_lock);
4392 } else if (old_state)
4393 lpfc_nlp_counters(vport, old_state, -1);
4395 ndlp->nlp_state = state;
4396 lpfc_nlp_counters(vport, state, 1);
4397 lpfc_nlp_state_cleanup(vport, ndlp, old_state, state);
4400 void
4401 lpfc_enqueue_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
4403 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4405 if (list_empty(&ndlp->nlp_listp)) {
4406 spin_lock_irq(shost->host_lock);
4407 list_add_tail(&ndlp->nlp_listp, &vport->fc_nodes);
4408 spin_unlock_irq(shost->host_lock);
4412 void
4413 lpfc_dequeue_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
4415 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4417 lpfc_cancel_retry_delay_tmo(vport, ndlp);
4418 if (ndlp->nlp_state && !list_empty(&ndlp->nlp_listp))
4419 lpfc_nlp_counters(vport, ndlp->nlp_state, -1);
4420 spin_lock_irq(shost->host_lock);
4421 list_del_init(&ndlp->nlp_listp);
4422 spin_unlock_irq(shost->host_lock);
4423 lpfc_nlp_state_cleanup(vport, ndlp, ndlp->nlp_state,
4424 NLP_STE_UNUSED_NODE);
4427 static void
4428 lpfc_disable_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
4430 lpfc_cancel_retry_delay_tmo(vport, ndlp);
4431 if (ndlp->nlp_state && !list_empty(&ndlp->nlp_listp))
4432 lpfc_nlp_counters(vport, ndlp->nlp_state, -1);
4433 lpfc_nlp_state_cleanup(vport, ndlp, ndlp->nlp_state,
4434 NLP_STE_UNUSED_NODE);
4437 * lpfc_initialize_node - Initialize all fields of node object
4438 * @vport: Pointer to Virtual Port object.
4439 * @ndlp: Pointer to FC node object.
4440 * @did: FC_ID of the node.
4442 * This function is always called when node object need to be initialized.
4443 * It initializes all the fields of the node object. Although the reference
4444 * to phba from @ndlp can be obtained indirectly through it's reference to
4445 * @vport, a direct reference to phba is taken here by @ndlp. This is due
4446 * to the life-span of the @ndlp might go beyond the existence of @vport as
4447 * the final release of ndlp is determined by its reference count. And, the
4448 * operation on @ndlp needs the reference to phba.
4450 static inline void
4451 lpfc_initialize_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
4452 uint32_t did)
4454 INIT_LIST_HEAD(&ndlp->els_retry_evt.evt_listp);
4455 INIT_LIST_HEAD(&ndlp->dev_loss_evt.evt_listp);
4456 timer_setup(&ndlp->nlp_delayfunc, lpfc_els_retry_delay, 0);
4457 ndlp->nlp_DID = did;
4458 ndlp->vport = vport;
4459 ndlp->phba = vport->phba;
4460 ndlp->nlp_sid = NLP_NO_SID;
4461 ndlp->nlp_fc4_type = NLP_FC4_NONE;
4462 kref_init(&ndlp->kref);
4463 NLP_INT_NODE_ACT(ndlp);
4464 atomic_set(&ndlp->cmd_pending, 0);
4465 ndlp->cmd_qdepth = vport->cfg_tgt_queue_depth;
4466 ndlp->nlp_defer_did = NLP_EVT_NOTHING_PENDING;
4469 struct lpfc_nodelist *
4470 lpfc_enable_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
4471 int state)
4473 struct lpfc_hba *phba = vport->phba;
4474 uint32_t did, flag;
4475 unsigned long flags;
4476 unsigned long *active_rrqs_xri_bitmap = NULL;
4477 int rpi = LPFC_RPI_ALLOC_ERROR;
4478 uint32_t defer_did = 0;
4480 if (!ndlp)
4481 return NULL;
4483 if (phba->sli_rev == LPFC_SLI_REV4) {
4484 rpi = lpfc_sli4_alloc_rpi(vport->phba);
4485 if (rpi == LPFC_RPI_ALLOC_ERROR)
4486 return NULL;
4489 spin_lock_irqsave(&phba->ndlp_lock, flags);
4490 /* The ndlp should not be in memory free mode */
4491 if (NLP_CHK_FREE_REQ(ndlp)) {
4492 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
4493 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE,
4494 "0277 lpfc_enable_node: ndlp:x%p "
4495 "usgmap:x%x refcnt:%d\n",
4496 (void *)ndlp, ndlp->nlp_usg_map,
4497 kref_read(&ndlp->kref));
4498 goto free_rpi;
4500 /* The ndlp should not already be in active mode */
4501 if (NLP_CHK_NODE_ACT(ndlp)) {
4502 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
4503 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE,
4504 "0278 lpfc_enable_node: ndlp:x%p "
4505 "usgmap:x%x refcnt:%d\n",
4506 (void *)ndlp, ndlp->nlp_usg_map,
4507 kref_read(&ndlp->kref));
4508 goto free_rpi;
4511 /* First preserve the orginal DID, xri_bitmap and some flags */
4512 did = ndlp->nlp_DID;
4513 flag = (ndlp->nlp_flag & NLP_UNREG_INP);
4514 if (flag & NLP_UNREG_INP)
4515 defer_did = ndlp->nlp_defer_did;
4516 if (phba->sli_rev == LPFC_SLI_REV4)
4517 active_rrqs_xri_bitmap = ndlp->active_rrqs_xri_bitmap;
4519 /* Zero ndlp except of ndlp linked list pointer */
4520 memset((((char *)ndlp) + sizeof (struct list_head)), 0,
4521 sizeof (struct lpfc_nodelist) - sizeof (struct list_head));
4523 /* Next reinitialize and restore saved objects */
4524 lpfc_initialize_node(vport, ndlp, did);
4525 ndlp->nlp_flag |= flag;
4526 if (flag & NLP_UNREG_INP)
4527 ndlp->nlp_defer_did = defer_did;
4528 if (phba->sli_rev == LPFC_SLI_REV4)
4529 ndlp->active_rrqs_xri_bitmap = active_rrqs_xri_bitmap;
4531 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
4532 if (vport->phba->sli_rev == LPFC_SLI_REV4) {
4533 ndlp->nlp_rpi = rpi;
4534 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
4535 "0008 rpi:%x DID:%x flg:%x refcnt:%d "
4536 "map:%x %p\n", ndlp->nlp_rpi, ndlp->nlp_DID,
4537 ndlp->nlp_flag,
4538 kref_read(&ndlp->kref),
4539 ndlp->nlp_usg_map, ndlp);
4543 if (state != NLP_STE_UNUSED_NODE)
4544 lpfc_nlp_set_state(vport, ndlp, state);
4546 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
4547 "node enable: did:x%x",
4548 ndlp->nlp_DID, 0, 0);
4549 return ndlp;
4551 free_rpi:
4552 if (phba->sli_rev == LPFC_SLI_REV4)
4553 lpfc_sli4_free_rpi(vport->phba, rpi);
4554 return NULL;
4557 void
4558 lpfc_drop_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
4561 * Use of lpfc_drop_node and UNUSED list: lpfc_drop_node should
4562 * be used if we wish to issue the "last" lpfc_nlp_put() to remove
4563 * the ndlp from the vport. The ndlp marked as UNUSED on the list
4564 * until ALL other outstanding threads have completed. We check
4565 * that the ndlp not already in the UNUSED state before we proceed.
4567 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
4568 return;
4569 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNUSED_NODE);
4570 if (vport->phba->sli_rev == LPFC_SLI_REV4) {
4571 lpfc_cleanup_vports_rrqs(vport, ndlp);
4572 lpfc_unreg_rpi(vport, ndlp);
4575 lpfc_nlp_put(ndlp);
4576 return;
4580 * Start / ReStart rescue timer for Discovery / RSCN handling
4582 void
4583 lpfc_set_disctmo(struct lpfc_vport *vport)
4585 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4586 struct lpfc_hba *phba = vport->phba;
4587 uint32_t tmo;
4589 if (vport->port_state == LPFC_LOCAL_CFG_LINK) {
4590 /* For FAN, timeout should be greater than edtov */
4591 tmo = (((phba->fc_edtov + 999) / 1000) + 1);
4592 } else {
4593 /* Normal discovery timeout should be > than ELS/CT timeout
4594 * FC spec states we need 3 * ratov for CT requests
4596 tmo = ((phba->fc_ratov * 3) + 3);
4600 if (!timer_pending(&vport->fc_disctmo)) {
4601 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
4602 "set disc timer: tmo:x%x state:x%x flg:x%x",
4603 tmo, vport->port_state, vport->fc_flag);
4606 mod_timer(&vport->fc_disctmo, jiffies + msecs_to_jiffies(1000 * tmo));
4607 spin_lock_irq(shost->host_lock);
4608 vport->fc_flag |= FC_DISC_TMO;
4609 spin_unlock_irq(shost->host_lock);
4611 /* Start Discovery Timer state <hba_state> */
4612 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
4613 "0247 Start Discovery Timer state x%x "
4614 "Data: x%x x%lx x%x x%x\n",
4615 vport->port_state, tmo,
4616 (unsigned long)&vport->fc_disctmo, vport->fc_plogi_cnt,
4617 vport->fc_adisc_cnt);
4619 return;
4623 * Cancel rescue timer for Discovery / RSCN handling
4626 lpfc_can_disctmo(struct lpfc_vport *vport)
4628 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4629 unsigned long iflags;
4631 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
4632 "can disc timer: state:x%x rtry:x%x flg:x%x",
4633 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
4635 /* Turn off discovery timer if its running */
4636 if (vport->fc_flag & FC_DISC_TMO) {
4637 spin_lock_irqsave(shost->host_lock, iflags);
4638 vport->fc_flag &= ~FC_DISC_TMO;
4639 spin_unlock_irqrestore(shost->host_lock, iflags);
4640 del_timer_sync(&vport->fc_disctmo);
4641 spin_lock_irqsave(&vport->work_port_lock, iflags);
4642 vport->work_port_events &= ~WORKER_DISC_TMO;
4643 spin_unlock_irqrestore(&vport->work_port_lock, iflags);
4646 /* Cancel Discovery Timer state <hba_state> */
4647 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
4648 "0248 Cancel Discovery Timer state x%x "
4649 "Data: x%x x%x x%x\n",
4650 vport->port_state, vport->fc_flag,
4651 vport->fc_plogi_cnt, vport->fc_adisc_cnt);
4652 return 0;
4656 * Check specified ring for outstanding IOCB on the SLI queue
4657 * Return true if iocb matches the specified nport
4660 lpfc_check_sli_ndlp(struct lpfc_hba *phba,
4661 struct lpfc_sli_ring *pring,
4662 struct lpfc_iocbq *iocb,
4663 struct lpfc_nodelist *ndlp)
4665 IOCB_t *icmd = &iocb->iocb;
4666 struct lpfc_vport *vport = ndlp->vport;
4668 if (iocb->vport != vport)
4669 return 0;
4671 if (pring->ringno == LPFC_ELS_RING) {
4672 switch (icmd->ulpCommand) {
4673 case CMD_GEN_REQUEST64_CR:
4674 if (iocb->context_un.ndlp == ndlp)
4675 return 1;
4676 case CMD_ELS_REQUEST64_CR:
4677 if (icmd->un.elsreq64.remoteID == ndlp->nlp_DID)
4678 return 1;
4679 case CMD_XMIT_ELS_RSP64_CX:
4680 if (iocb->context1 == (uint8_t *) ndlp)
4681 return 1;
4683 } else if (pring->ringno == LPFC_FCP_RING) {
4684 /* Skip match check if waiting to relogin to FCP target */
4685 if ((ndlp->nlp_type & NLP_FCP_TARGET) &&
4686 (ndlp->nlp_flag & NLP_DELAY_TMO)) {
4687 return 0;
4689 if (icmd->ulpContext == (volatile ushort)ndlp->nlp_rpi) {
4690 return 1;
4693 return 0;
4696 static void
4697 __lpfc_dequeue_nport_iocbs(struct lpfc_hba *phba,
4698 struct lpfc_nodelist *ndlp, struct lpfc_sli_ring *pring,
4699 struct list_head *dequeue_list)
4701 struct lpfc_iocbq *iocb, *next_iocb;
4703 list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
4704 /* Check to see if iocb matches the nport */
4705 if (lpfc_check_sli_ndlp(phba, pring, iocb, ndlp))
4706 /* match, dequeue */
4707 list_move_tail(&iocb->list, dequeue_list);
4711 static void
4712 lpfc_sli3_dequeue_nport_iocbs(struct lpfc_hba *phba,
4713 struct lpfc_nodelist *ndlp, struct list_head *dequeue_list)
4715 struct lpfc_sli *psli = &phba->sli;
4716 uint32_t i;
4718 spin_lock_irq(&phba->hbalock);
4719 for (i = 0; i < psli->num_rings; i++)
4720 __lpfc_dequeue_nport_iocbs(phba, ndlp, &psli->sli3_ring[i],
4721 dequeue_list);
4722 spin_unlock_irq(&phba->hbalock);
4725 static void
4726 lpfc_sli4_dequeue_nport_iocbs(struct lpfc_hba *phba,
4727 struct lpfc_nodelist *ndlp, struct list_head *dequeue_list)
4729 struct lpfc_sli_ring *pring;
4730 struct lpfc_queue *qp = NULL;
4732 spin_lock_irq(&phba->hbalock);
4733 list_for_each_entry(qp, &phba->sli4_hba.lpfc_wq_list, wq_list) {
4734 pring = qp->pring;
4735 if (!pring)
4736 continue;
4737 spin_lock(&pring->ring_lock);
4738 __lpfc_dequeue_nport_iocbs(phba, ndlp, pring, dequeue_list);
4739 spin_unlock(&pring->ring_lock);
4741 spin_unlock_irq(&phba->hbalock);
4745 * Free resources / clean up outstanding I/Os
4746 * associated with nlp_rpi in the LPFC_NODELIST entry.
4748 static int
4749 lpfc_no_rpi(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
4751 LIST_HEAD(completions);
4753 lpfc_fabric_abort_nport(ndlp);
4756 * Everything that matches on txcmplq will be returned
4757 * by firmware with a no rpi error.
4759 if (ndlp->nlp_flag & NLP_RPI_REGISTERED) {
4760 if (phba->sli_rev != LPFC_SLI_REV4)
4761 lpfc_sli3_dequeue_nport_iocbs(phba, ndlp, &completions);
4762 else
4763 lpfc_sli4_dequeue_nport_iocbs(phba, ndlp, &completions);
4766 /* Cancel all the IOCBs from the completions list */
4767 lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
4768 IOERR_SLI_ABORTED);
4770 return 0;
4774 * lpfc_nlp_logo_unreg - Unreg mailbox completion handler before LOGO
4775 * @phba: Pointer to HBA context object.
4776 * @pmb: Pointer to mailbox object.
4778 * This function will issue an ELS LOGO command after completing
4779 * the UNREG_RPI.
4781 static void
4782 lpfc_nlp_logo_unreg(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
4784 struct lpfc_vport *vport = pmb->vport;
4785 struct lpfc_nodelist *ndlp;
4787 ndlp = (struct lpfc_nodelist *)(pmb->ctx_ndlp);
4788 if (!ndlp)
4789 return;
4790 lpfc_issue_els_logo(vport, ndlp, 0);
4791 mempool_free(pmb, phba->mbox_mem_pool);
4793 /* Check to see if there are any deferred events to process */
4794 if ((ndlp->nlp_flag & NLP_UNREG_INP) &&
4795 (ndlp->nlp_defer_did != NLP_EVT_NOTHING_PENDING)) {
4796 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
4797 "1434 UNREG cmpl deferred logo x%x "
4798 "on NPort x%x Data: x%x %p\n",
4799 ndlp->nlp_rpi, ndlp->nlp_DID,
4800 ndlp->nlp_defer_did, ndlp);
4802 ndlp->nlp_flag &= ~NLP_UNREG_INP;
4803 ndlp->nlp_defer_did = NLP_EVT_NOTHING_PENDING;
4804 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
4805 } else {
4806 ndlp->nlp_flag &= ~NLP_UNREG_INP;
4811 * Free rpi associated with LPFC_NODELIST entry.
4812 * This routine is called from lpfc_freenode(), when we are removing
4813 * a LPFC_NODELIST entry. It is also called if the driver initiates a
4814 * LOGO that completes successfully, and we are waiting to PLOGI back
4815 * to the remote NPort. In addition, it is called after we receive
4816 * and unsolicated ELS cmd, send back a rsp, the rsp completes and
4817 * we are waiting to PLOGI back to the remote NPort.
4820 lpfc_unreg_rpi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
4822 struct lpfc_hba *phba = vport->phba;
4823 LPFC_MBOXQ_t *mbox;
4824 int rc, acc_plogi = 1;
4825 uint16_t rpi;
4827 if (ndlp->nlp_flag & NLP_RPI_REGISTERED ||
4828 ndlp->nlp_flag & NLP_REG_LOGIN_SEND) {
4829 if (ndlp->nlp_flag & NLP_REG_LOGIN_SEND)
4830 lpfc_printf_vlog(vport, KERN_INFO, LOG_SLI,
4831 "3366 RPI x%x needs to be "
4832 "unregistered nlp_flag x%x "
4833 "did x%x\n",
4834 ndlp->nlp_rpi, ndlp->nlp_flag,
4835 ndlp->nlp_DID);
4837 /* If there is already an UNREG in progress for this ndlp,
4838 * no need to queue up another one.
4840 if (ndlp->nlp_flag & NLP_UNREG_INP) {
4841 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
4842 "1436 unreg_rpi SKIP UNREG x%x on "
4843 "NPort x%x deferred x%x flg x%x "
4844 "Data: %p\n",
4845 ndlp->nlp_rpi, ndlp->nlp_DID,
4846 ndlp->nlp_defer_did,
4847 ndlp->nlp_flag, ndlp);
4848 goto out;
4851 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
4852 if (mbox) {
4853 /* SLI4 ports require the physical rpi value. */
4854 rpi = ndlp->nlp_rpi;
4855 if (phba->sli_rev == LPFC_SLI_REV4)
4856 rpi = phba->sli4_hba.rpi_ids[ndlp->nlp_rpi];
4858 lpfc_unreg_login(phba, vport->vpi, rpi, mbox);
4859 mbox->vport = vport;
4860 if (ndlp->nlp_flag & NLP_ISSUE_LOGO) {
4861 mbox->ctx_ndlp = ndlp;
4862 mbox->mbox_cmpl = lpfc_nlp_logo_unreg;
4863 } else {
4864 if (phba->sli_rev == LPFC_SLI_REV4 &&
4865 (!(vport->load_flag & FC_UNLOADING)) &&
4866 (bf_get(lpfc_sli_intf_if_type,
4867 &phba->sli4_hba.sli_intf) >=
4868 LPFC_SLI_INTF_IF_TYPE_2) &&
4869 (kref_read(&ndlp->kref) > 0)) {
4870 mbox->ctx_ndlp = lpfc_nlp_get(ndlp);
4871 mbox->mbox_cmpl =
4872 lpfc_sli4_unreg_rpi_cmpl_clr;
4874 * accept PLOGIs after unreg_rpi_cmpl
4876 acc_plogi = 0;
4877 } else {
4878 mbox->ctx_ndlp = ndlp;
4879 mbox->mbox_cmpl =
4880 lpfc_sli_def_mbox_cmpl;
4883 if (((ndlp->nlp_DID & Fabric_DID_MASK) !=
4884 Fabric_DID_MASK) &&
4885 (!(vport->fc_flag & FC_OFFLINE_MODE)))
4886 ndlp->nlp_flag |= NLP_UNREG_INP;
4888 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
4889 "1433 unreg_rpi UNREG x%x on "
4890 "NPort x%x deferred flg x%x Data:%p\n",
4891 ndlp->nlp_rpi, ndlp->nlp_DID,
4892 ndlp->nlp_flag, ndlp);
4894 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
4895 if (rc == MBX_NOT_FINISHED) {
4896 mempool_free(mbox, phba->mbox_mem_pool);
4897 acc_plogi = 1;
4900 lpfc_no_rpi(phba, ndlp);
4901 out:
4902 if (phba->sli_rev != LPFC_SLI_REV4)
4903 ndlp->nlp_rpi = 0;
4904 ndlp->nlp_flag &= ~NLP_RPI_REGISTERED;
4905 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
4906 if (acc_plogi)
4907 ndlp->nlp_flag &= ~NLP_LOGO_ACC;
4908 return 1;
4910 ndlp->nlp_flag &= ~NLP_LOGO_ACC;
4911 return 0;
4915 * lpfc_unreg_hba_rpis - Unregister rpis registered to the hba.
4916 * @phba: pointer to lpfc hba data structure.
4918 * This routine is invoked to unregister all the currently registered RPIs
4919 * to the HBA.
4921 void
4922 lpfc_unreg_hba_rpis(struct lpfc_hba *phba)
4924 struct lpfc_vport **vports;
4925 struct lpfc_nodelist *ndlp;
4926 struct Scsi_Host *shost;
4927 int i;
4929 vports = lpfc_create_vport_work_array(phba);
4930 if (!vports) {
4931 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY,
4932 "2884 Vport array allocation failed \n");
4933 return;
4935 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
4936 shost = lpfc_shost_from_vport(vports[i]);
4937 spin_lock_irq(shost->host_lock);
4938 list_for_each_entry(ndlp, &vports[i]->fc_nodes, nlp_listp) {
4939 if (ndlp->nlp_flag & NLP_RPI_REGISTERED) {
4940 /* The mempool_alloc might sleep */
4941 spin_unlock_irq(shost->host_lock);
4942 lpfc_unreg_rpi(vports[i], ndlp);
4943 spin_lock_irq(shost->host_lock);
4946 spin_unlock_irq(shost->host_lock);
4948 lpfc_destroy_vport_work_array(phba, vports);
4951 void
4952 lpfc_unreg_all_rpis(struct lpfc_vport *vport)
4954 struct lpfc_hba *phba = vport->phba;
4955 LPFC_MBOXQ_t *mbox;
4956 int rc;
4958 if (phba->sli_rev == LPFC_SLI_REV4) {
4959 lpfc_sli4_unreg_all_rpis(vport);
4960 return;
4963 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
4964 if (mbox) {
4965 lpfc_unreg_login(phba, vport->vpi, LPFC_UNREG_ALL_RPIS_VPORT,
4966 mbox);
4967 mbox->vport = vport;
4968 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
4969 mbox->ctx_ndlp = NULL;
4970 rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO);
4971 if (rc != MBX_TIMEOUT)
4972 mempool_free(mbox, phba->mbox_mem_pool);
4974 if ((rc == MBX_TIMEOUT) || (rc == MBX_NOT_FINISHED))
4975 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX | LOG_VPORT,
4976 "1836 Could not issue "
4977 "unreg_login(all_rpis) status %d\n", rc);
4981 void
4982 lpfc_unreg_default_rpis(struct lpfc_vport *vport)
4984 struct lpfc_hba *phba = vport->phba;
4985 LPFC_MBOXQ_t *mbox;
4986 int rc;
4988 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
4989 if (mbox) {
4990 lpfc_unreg_did(phba, vport->vpi, LPFC_UNREG_ALL_DFLT_RPIS,
4991 mbox);
4992 mbox->vport = vport;
4993 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
4994 mbox->ctx_ndlp = NULL;
4995 rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO);
4996 if (rc != MBX_TIMEOUT)
4997 mempool_free(mbox, phba->mbox_mem_pool);
4999 if ((rc == MBX_TIMEOUT) || (rc == MBX_NOT_FINISHED))
5000 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX | LOG_VPORT,
5001 "1815 Could not issue "
5002 "unreg_did (default rpis) status %d\n",
5003 rc);
5008 * Free resources associated with LPFC_NODELIST entry
5009 * so it can be freed.
5011 static int
5012 lpfc_cleanup_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
5014 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
5015 struct lpfc_hba *phba = vport->phba;
5016 LPFC_MBOXQ_t *mb, *nextmb;
5017 struct lpfc_dmabuf *mp;
5019 /* Cleanup node for NPort <nlp_DID> */
5020 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
5021 "0900 Cleanup node for NPort x%x "
5022 "Data: x%x x%x x%x\n",
5023 ndlp->nlp_DID, ndlp->nlp_flag,
5024 ndlp->nlp_state, ndlp->nlp_rpi);
5025 if (NLP_CHK_FREE_REQ(ndlp)) {
5026 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE,
5027 "0280 lpfc_cleanup_node: ndlp:x%p "
5028 "usgmap:x%x refcnt:%d\n",
5029 (void *)ndlp, ndlp->nlp_usg_map,
5030 kref_read(&ndlp->kref));
5031 lpfc_dequeue_node(vport, ndlp);
5032 } else {
5033 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE,
5034 "0281 lpfc_cleanup_node: ndlp:x%p "
5035 "usgmap:x%x refcnt:%d\n",
5036 (void *)ndlp, ndlp->nlp_usg_map,
5037 kref_read(&ndlp->kref));
5038 lpfc_disable_node(vport, ndlp);
5042 /* Don't need to clean up REG_LOGIN64 cmds for Default RPI cleanup */
5044 /* cleanup any ndlp on mbox q waiting for reglogin cmpl */
5045 if ((mb = phba->sli.mbox_active)) {
5046 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
5047 !(mb->mbox_flag & LPFC_MBX_IMED_UNREG) &&
5048 (ndlp == (struct lpfc_nodelist *)mb->ctx_ndlp)) {
5049 mb->ctx_ndlp = NULL;
5050 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
5054 spin_lock_irq(&phba->hbalock);
5055 /* Cleanup REG_LOGIN completions which are not yet processed */
5056 list_for_each_entry(mb, &phba->sli.mboxq_cmpl, list) {
5057 if ((mb->u.mb.mbxCommand != MBX_REG_LOGIN64) ||
5058 (mb->mbox_flag & LPFC_MBX_IMED_UNREG) ||
5059 (ndlp != (struct lpfc_nodelist *)mb->ctx_ndlp))
5060 continue;
5062 mb->ctx_ndlp = NULL;
5063 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
5066 list_for_each_entry_safe(mb, nextmb, &phba->sli.mboxq, list) {
5067 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
5068 !(mb->mbox_flag & LPFC_MBX_IMED_UNREG) &&
5069 (ndlp == (struct lpfc_nodelist *)mb->ctx_ndlp)) {
5070 mp = (struct lpfc_dmabuf *)(mb->ctx_buf);
5071 if (mp) {
5072 __lpfc_mbuf_free(phba, mp->virt, mp->phys);
5073 kfree(mp);
5075 list_del(&mb->list);
5076 mempool_free(mb, phba->mbox_mem_pool);
5077 /* We shall not invoke the lpfc_nlp_put to decrement
5078 * the ndlp reference count as we are in the process
5079 * of lpfc_nlp_release.
5083 spin_unlock_irq(&phba->hbalock);
5085 lpfc_els_abort(phba, ndlp);
5087 spin_lock_irq(shost->host_lock);
5088 ndlp->nlp_flag &= ~NLP_DELAY_TMO;
5089 spin_unlock_irq(shost->host_lock);
5091 ndlp->nlp_last_elscmd = 0;
5092 del_timer_sync(&ndlp->nlp_delayfunc);
5094 list_del_init(&ndlp->els_retry_evt.evt_listp);
5095 list_del_init(&ndlp->dev_loss_evt.evt_listp);
5096 lpfc_cleanup_vports_rrqs(vport, ndlp);
5097 lpfc_unreg_rpi(vport, ndlp);
5099 return 0;
5103 * Check to see if we can free the nlp back to the freelist.
5104 * If we are in the middle of using the nlp in the discovery state
5105 * machine, defer the free till we reach the end of the state machine.
5107 static void
5108 lpfc_nlp_remove(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
5110 struct lpfc_hba *phba = vport->phba;
5111 struct lpfc_rport_data *rdata;
5112 struct fc_rport *rport;
5113 LPFC_MBOXQ_t *mbox;
5114 int rc;
5116 lpfc_cancel_retry_delay_tmo(vport, ndlp);
5117 if ((ndlp->nlp_flag & NLP_DEFER_RM) &&
5118 !(ndlp->nlp_flag & NLP_REG_LOGIN_SEND) &&
5119 !(ndlp->nlp_flag & NLP_RPI_REGISTERED) &&
5120 phba->sli_rev != LPFC_SLI_REV4) {
5121 /* For this case we need to cleanup the default rpi
5122 * allocated by the firmware.
5124 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
5125 "0005 rpi:%x DID:%x flg:%x %d map:%x %p\n",
5126 ndlp->nlp_rpi, ndlp->nlp_DID, ndlp->nlp_flag,
5127 kref_read(&ndlp->kref),
5128 ndlp->nlp_usg_map, ndlp);
5129 if ((mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL))
5130 != NULL) {
5131 rc = lpfc_reg_rpi(phba, vport->vpi, ndlp->nlp_DID,
5132 (uint8_t *) &vport->fc_sparam, mbox, ndlp->nlp_rpi);
5133 if (rc) {
5134 mempool_free(mbox, phba->mbox_mem_pool);
5136 else {
5137 mbox->mbox_flag |= LPFC_MBX_IMED_UNREG;
5138 mbox->mbox_cmpl = lpfc_mbx_cmpl_dflt_rpi;
5139 mbox->vport = vport;
5140 mbox->ctx_ndlp = ndlp;
5141 rc =lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
5142 if (rc == MBX_NOT_FINISHED) {
5143 mempool_free(mbox, phba->mbox_mem_pool);
5148 lpfc_cleanup_node(vport, ndlp);
5151 * ndlp->rport must be set to NULL before it reaches here
5152 * i.e. break rport/node link before doing lpfc_nlp_put for
5153 * registered rport and then drop the reference of rport.
5155 if (ndlp->rport) {
5157 * extra lpfc_nlp_put dropped the reference of ndlp
5158 * for registered rport so need to cleanup rport
5160 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE,
5161 "0940 removed node x%p DID x%x "
5162 " rport not null %p\n",
5163 ndlp, ndlp->nlp_DID, ndlp->rport);
5164 rport = ndlp->rport;
5165 rdata = rport->dd_data;
5166 rdata->pnode = NULL;
5167 ndlp->rport = NULL;
5168 put_device(&rport->dev);
5172 static int
5173 lpfc_matchdid(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
5174 uint32_t did)
5176 D_ID mydid, ndlpdid, matchdid;
5178 if (did == Bcast_DID)
5179 return 0;
5181 /* First check for Direct match */
5182 if (ndlp->nlp_DID == did)
5183 return 1;
5185 /* Next check for area/domain identically equals 0 match */
5186 mydid.un.word = vport->fc_myDID;
5187 if ((mydid.un.b.domain == 0) && (mydid.un.b.area == 0)) {
5188 return 0;
5191 matchdid.un.word = did;
5192 ndlpdid.un.word = ndlp->nlp_DID;
5193 if (matchdid.un.b.id == ndlpdid.un.b.id) {
5194 if ((mydid.un.b.domain == matchdid.un.b.domain) &&
5195 (mydid.un.b.area == matchdid.un.b.area)) {
5196 /* This code is supposed to match the ID
5197 * for a private loop device that is
5198 * connect to fl_port. But we need to
5199 * check that the port did not just go
5200 * from pt2pt to fabric or we could end
5201 * up matching ndlp->nlp_DID 000001 to
5202 * fabric DID 0x20101
5204 if ((ndlpdid.un.b.domain == 0) &&
5205 (ndlpdid.un.b.area == 0)) {
5206 if (ndlpdid.un.b.id &&
5207 vport->phba->fc_topology ==
5208 LPFC_TOPOLOGY_LOOP)
5209 return 1;
5211 return 0;
5214 matchdid.un.word = ndlp->nlp_DID;
5215 if ((mydid.un.b.domain == ndlpdid.un.b.domain) &&
5216 (mydid.un.b.area == ndlpdid.un.b.area)) {
5217 if ((matchdid.un.b.domain == 0) &&
5218 (matchdid.un.b.area == 0)) {
5219 if (matchdid.un.b.id)
5220 return 1;
5224 return 0;
5227 /* Search for a nodelist entry */
5228 static struct lpfc_nodelist *
5229 __lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did)
5231 struct lpfc_nodelist *ndlp;
5232 uint32_t data1;
5234 list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
5235 if (lpfc_matchdid(vport, ndlp, did)) {
5236 data1 = (((uint32_t) ndlp->nlp_state << 24) |
5237 ((uint32_t) ndlp->nlp_xri << 16) |
5238 ((uint32_t) ndlp->nlp_type << 8) |
5239 ((uint32_t) ndlp->nlp_rpi & 0xff));
5240 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
5241 "0929 FIND node DID "
5242 "Data: x%p x%x x%x x%x %p\n",
5243 ndlp, ndlp->nlp_DID,
5244 ndlp->nlp_flag, data1,
5245 ndlp->active_rrqs_xri_bitmap);
5246 return ndlp;
5250 /* FIND node did <did> NOT FOUND */
5251 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
5252 "0932 FIND node did x%x NOT FOUND.\n", did);
5253 return NULL;
5256 struct lpfc_nodelist *
5257 lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did)
5259 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
5260 struct lpfc_nodelist *ndlp;
5261 unsigned long iflags;
5263 spin_lock_irqsave(shost->host_lock, iflags);
5264 ndlp = __lpfc_findnode_did(vport, did);
5265 spin_unlock_irqrestore(shost->host_lock, iflags);
5266 return ndlp;
5269 struct lpfc_nodelist *
5270 lpfc_setup_disc_node(struct lpfc_vport *vport, uint32_t did)
5272 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
5273 struct lpfc_nodelist *ndlp;
5275 ndlp = lpfc_findnode_did(vport, did);
5276 if (!ndlp) {
5277 if (vport->phba->nvmet_support)
5278 return NULL;
5279 if ((vport->fc_flag & FC_RSCN_MODE) != 0 &&
5280 lpfc_rscn_payload_check(vport, did) == 0)
5281 return NULL;
5282 ndlp = lpfc_nlp_init(vport, did);
5283 if (!ndlp)
5284 return NULL;
5285 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
5286 spin_lock_irq(shost->host_lock);
5287 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
5288 spin_unlock_irq(shost->host_lock);
5289 return ndlp;
5290 } else if (!NLP_CHK_NODE_ACT(ndlp)) {
5291 if (vport->phba->nvmet_support)
5292 return NULL;
5293 ndlp = lpfc_enable_node(vport, ndlp, NLP_STE_NPR_NODE);
5294 if (!ndlp)
5295 return NULL;
5296 spin_lock_irq(shost->host_lock);
5297 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
5298 spin_unlock_irq(shost->host_lock);
5299 return ndlp;
5302 /* The NVME Target does not want to actively manage an rport.
5303 * The goal is to allow the target to reset its state and clear
5304 * pending IO in preparation for the initiator to recover.
5306 if ((vport->fc_flag & FC_RSCN_MODE) &&
5307 !(vport->fc_flag & FC_NDISC_ACTIVE)) {
5308 if (lpfc_rscn_payload_check(vport, did)) {
5310 /* Since this node is marked for discovery,
5311 * delay timeout is not needed.
5313 lpfc_cancel_retry_delay_tmo(vport, ndlp);
5315 /* NVME Target mode waits until rport is known to be
5316 * impacted by the RSCN before it transitions. No
5317 * active management - just go to NPR provided the
5318 * node had a valid login.
5320 if (vport->phba->nvmet_support)
5321 return ndlp;
5323 /* If we've already received a PLOGI from this NPort
5324 * we don't need to try to discover it again.
5326 if (ndlp->nlp_flag & NLP_RCV_PLOGI)
5327 return NULL;
5329 spin_lock_irq(shost->host_lock);
5330 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
5331 spin_unlock_irq(shost->host_lock);
5332 } else
5333 ndlp = NULL;
5334 } else {
5335 /* If the initiator received a PLOGI from this NPort or if the
5336 * initiator is already in the process of discovery on it,
5337 * there's no need to try to discover it again.
5339 if (ndlp->nlp_state == NLP_STE_ADISC_ISSUE ||
5340 ndlp->nlp_state == NLP_STE_PLOGI_ISSUE ||
5341 (!vport->phba->nvmet_support &&
5342 ndlp->nlp_flag & NLP_RCV_PLOGI))
5343 return NULL;
5345 if (vport->phba->nvmet_support)
5346 return ndlp;
5348 /* Moving to NPR state clears unsolicited flags and
5349 * allows for rediscovery
5351 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
5353 spin_lock_irq(shost->host_lock);
5354 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
5355 spin_unlock_irq(shost->host_lock);
5357 return ndlp;
5360 /* Build a list of nodes to discover based on the loopmap */
5361 void
5362 lpfc_disc_list_loopmap(struct lpfc_vport *vport)
5364 struct lpfc_hba *phba = vport->phba;
5365 int j;
5366 uint32_t alpa, index;
5368 if (!lpfc_is_link_up(phba))
5369 return;
5371 if (phba->fc_topology != LPFC_TOPOLOGY_LOOP)
5372 return;
5374 /* Check for loop map present or not */
5375 if (phba->alpa_map[0]) {
5376 for (j = 1; j <= phba->alpa_map[0]; j++) {
5377 alpa = phba->alpa_map[j];
5378 if (((vport->fc_myDID & 0xff) == alpa) || (alpa == 0))
5379 continue;
5380 lpfc_setup_disc_node(vport, alpa);
5382 } else {
5383 /* No alpamap, so try all alpa's */
5384 for (j = 0; j < FC_MAXLOOP; j++) {
5385 /* If cfg_scan_down is set, start from highest
5386 * ALPA (0xef) to lowest (0x1).
5388 if (vport->cfg_scan_down)
5389 index = j;
5390 else
5391 index = FC_MAXLOOP - j - 1;
5392 alpa = lpfcAlpaArray[index];
5393 if ((vport->fc_myDID & 0xff) == alpa)
5394 continue;
5395 lpfc_setup_disc_node(vport, alpa);
5398 return;
5401 /* SLI3 only */
5402 void
5403 lpfc_issue_clear_la(struct lpfc_hba *phba, struct lpfc_vport *vport)
5405 LPFC_MBOXQ_t *mbox;
5406 struct lpfc_sli *psli = &phba->sli;
5407 struct lpfc_sli_ring *extra_ring = &psli->sli3_ring[LPFC_EXTRA_RING];
5408 struct lpfc_sli_ring *fcp_ring = &psli->sli3_ring[LPFC_FCP_RING];
5409 int rc;
5412 * if it's not a physical port or if we already send
5413 * clear_la then don't send it.
5415 if ((phba->link_state >= LPFC_CLEAR_LA) ||
5416 (vport->port_type != LPFC_PHYSICAL_PORT) ||
5417 (phba->sli_rev == LPFC_SLI_REV4))
5418 return;
5420 /* Link up discovery */
5421 if ((mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL)) != NULL) {
5422 phba->link_state = LPFC_CLEAR_LA;
5423 lpfc_clear_la(phba, mbox);
5424 mbox->mbox_cmpl = lpfc_mbx_cmpl_clear_la;
5425 mbox->vport = vport;
5426 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
5427 if (rc == MBX_NOT_FINISHED) {
5428 mempool_free(mbox, phba->mbox_mem_pool);
5429 lpfc_disc_flush_list(vport);
5430 extra_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
5431 fcp_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
5432 phba->link_state = LPFC_HBA_ERROR;
5437 /* Reg_vpi to tell firmware to resume normal operations */
5438 void
5439 lpfc_issue_reg_vpi(struct lpfc_hba *phba, struct lpfc_vport *vport)
5441 LPFC_MBOXQ_t *regvpimbox;
5443 regvpimbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
5444 if (regvpimbox) {
5445 lpfc_reg_vpi(vport, regvpimbox);
5446 regvpimbox->mbox_cmpl = lpfc_mbx_cmpl_reg_vpi;
5447 regvpimbox->vport = vport;
5448 if (lpfc_sli_issue_mbox(phba, regvpimbox, MBX_NOWAIT)
5449 == MBX_NOT_FINISHED) {
5450 mempool_free(regvpimbox, phba->mbox_mem_pool);
5455 /* Start Link up / RSCN discovery on NPR nodes */
5456 void
5457 lpfc_disc_start(struct lpfc_vport *vport)
5459 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
5460 struct lpfc_hba *phba = vport->phba;
5461 uint32_t num_sent;
5462 uint32_t clear_la_pending;
5464 if (!lpfc_is_link_up(phba)) {
5465 lpfc_printf_vlog(vport, KERN_INFO, LOG_SLI,
5466 "3315 Link is not up %x\n",
5467 phba->link_state);
5468 return;
5471 if (phba->link_state == LPFC_CLEAR_LA)
5472 clear_la_pending = 1;
5473 else
5474 clear_la_pending = 0;
5476 if (vport->port_state < LPFC_VPORT_READY)
5477 vport->port_state = LPFC_DISC_AUTH;
5479 lpfc_set_disctmo(vport);
5481 vport->fc_prevDID = vport->fc_myDID;
5482 vport->num_disc_nodes = 0;
5484 /* Start Discovery state <hba_state> */
5485 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
5486 "0202 Start Discovery hba state x%x "
5487 "Data: x%x x%x x%x\n",
5488 vport->port_state, vport->fc_flag, vport->fc_plogi_cnt,
5489 vport->fc_adisc_cnt);
5491 /* First do ADISCs - if any */
5492 num_sent = lpfc_els_disc_adisc(vport);
5494 if (num_sent)
5495 return;
5497 /* Register the VPI for SLI3, NPIV only. */
5498 if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
5499 !(vport->fc_flag & FC_PT2PT) &&
5500 !(vport->fc_flag & FC_RSCN_MODE) &&
5501 (phba->sli_rev < LPFC_SLI_REV4)) {
5502 lpfc_issue_clear_la(phba, vport);
5503 lpfc_issue_reg_vpi(phba, vport);
5504 return;
5508 * For SLI2, we need to set port_state to READY and continue
5509 * discovery.
5511 if (vport->port_state < LPFC_VPORT_READY && !clear_la_pending) {
5512 /* If we get here, there is nothing to ADISC */
5513 lpfc_issue_clear_la(phba, vport);
5515 if (!(vport->fc_flag & FC_ABORT_DISCOVERY)) {
5516 vport->num_disc_nodes = 0;
5517 /* go thru NPR nodes and issue ELS PLOGIs */
5518 if (vport->fc_npr_cnt)
5519 lpfc_els_disc_plogi(vport);
5521 if (!vport->num_disc_nodes) {
5522 spin_lock_irq(shost->host_lock);
5523 vport->fc_flag &= ~FC_NDISC_ACTIVE;
5524 spin_unlock_irq(shost->host_lock);
5525 lpfc_can_disctmo(vport);
5528 vport->port_state = LPFC_VPORT_READY;
5529 } else {
5530 /* Next do PLOGIs - if any */
5531 num_sent = lpfc_els_disc_plogi(vport);
5533 if (num_sent)
5534 return;
5536 if (vport->fc_flag & FC_RSCN_MODE) {
5537 /* Check to see if more RSCNs came in while we
5538 * were processing this one.
5540 if ((vport->fc_rscn_id_cnt == 0) &&
5541 (!(vport->fc_flag & FC_RSCN_DISCOVERY))) {
5542 spin_lock_irq(shost->host_lock);
5543 vport->fc_flag &= ~FC_RSCN_MODE;
5544 spin_unlock_irq(shost->host_lock);
5545 lpfc_can_disctmo(vport);
5546 } else
5547 lpfc_els_handle_rscn(vport);
5550 return;
5554 * Ignore completion for all IOCBs on tx and txcmpl queue for ELS
5555 * ring the match the sppecified nodelist.
5557 static void
5558 lpfc_free_tx(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
5560 LIST_HEAD(completions);
5561 IOCB_t *icmd;
5562 struct lpfc_iocbq *iocb, *next_iocb;
5563 struct lpfc_sli_ring *pring;
5565 pring = lpfc_phba_elsring(phba);
5566 if (unlikely(!pring))
5567 return;
5569 /* Error matching iocb on txq or txcmplq
5570 * First check the txq.
5572 spin_lock_irq(&phba->hbalock);
5573 list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
5574 if (iocb->context1 != ndlp) {
5575 continue;
5577 icmd = &iocb->iocb;
5578 if ((icmd->ulpCommand == CMD_ELS_REQUEST64_CR) ||
5579 (icmd->ulpCommand == CMD_XMIT_ELS_RSP64_CX)) {
5581 list_move_tail(&iocb->list, &completions);
5585 /* Next check the txcmplq */
5586 list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) {
5587 if (iocb->context1 != ndlp) {
5588 continue;
5590 icmd = &iocb->iocb;
5591 if (icmd->ulpCommand == CMD_ELS_REQUEST64_CR ||
5592 icmd->ulpCommand == CMD_XMIT_ELS_RSP64_CX) {
5593 lpfc_sli_issue_abort_iotag(phba, pring, iocb);
5596 spin_unlock_irq(&phba->hbalock);
5598 /* Cancel all the IOCBs from the completions list */
5599 lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
5600 IOERR_SLI_ABORTED);
5603 static void
5604 lpfc_disc_flush_list(struct lpfc_vport *vport)
5606 struct lpfc_nodelist *ndlp, *next_ndlp;
5607 struct lpfc_hba *phba = vport->phba;
5609 if (vport->fc_plogi_cnt || vport->fc_adisc_cnt) {
5610 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes,
5611 nlp_listp) {
5612 if (!NLP_CHK_NODE_ACT(ndlp))
5613 continue;
5614 if (ndlp->nlp_state == NLP_STE_PLOGI_ISSUE ||
5615 ndlp->nlp_state == NLP_STE_ADISC_ISSUE) {
5616 lpfc_free_tx(phba, ndlp);
5622 void
5623 lpfc_cleanup_discovery_resources(struct lpfc_vport *vport)
5625 lpfc_els_flush_rscn(vport);
5626 lpfc_els_flush_cmd(vport);
5627 lpfc_disc_flush_list(vport);
5630 /*****************************************************************************/
5632 * NAME: lpfc_disc_timeout
5634 * FUNCTION: Fibre Channel driver discovery timeout routine.
5636 * EXECUTION ENVIRONMENT: interrupt only
5638 * CALLED FROM:
5639 * Timer function
5641 * RETURNS:
5642 * none
5644 /*****************************************************************************/
5645 void
5646 lpfc_disc_timeout(struct timer_list *t)
5648 struct lpfc_vport *vport = from_timer(vport, t, fc_disctmo);
5649 struct lpfc_hba *phba = vport->phba;
5650 uint32_t tmo_posted;
5651 unsigned long flags = 0;
5653 if (unlikely(!phba))
5654 return;
5656 spin_lock_irqsave(&vport->work_port_lock, flags);
5657 tmo_posted = vport->work_port_events & WORKER_DISC_TMO;
5658 if (!tmo_posted)
5659 vport->work_port_events |= WORKER_DISC_TMO;
5660 spin_unlock_irqrestore(&vport->work_port_lock, flags);
5662 if (!tmo_posted)
5663 lpfc_worker_wake_up(phba);
5664 return;
5667 static void
5668 lpfc_disc_timeout_handler(struct lpfc_vport *vport)
5670 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
5671 struct lpfc_hba *phba = vport->phba;
5672 struct lpfc_sli *psli = &phba->sli;
5673 struct lpfc_nodelist *ndlp, *next_ndlp;
5674 LPFC_MBOXQ_t *initlinkmbox;
5675 int rc, clrlaerr = 0;
5677 if (!(vport->fc_flag & FC_DISC_TMO))
5678 return;
5680 spin_lock_irq(shost->host_lock);
5681 vport->fc_flag &= ~FC_DISC_TMO;
5682 spin_unlock_irq(shost->host_lock);
5684 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
5685 "disc timeout: state:x%x rtry:x%x flg:x%x",
5686 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
5688 switch (vport->port_state) {
5690 case LPFC_LOCAL_CFG_LINK:
5692 * port_state is identically LPFC_LOCAL_CFG_LINK while
5693 * waiting for FAN timeout
5695 lpfc_printf_vlog(vport, KERN_WARNING, LOG_DISCOVERY,
5696 "0221 FAN timeout\n");
5698 /* Start discovery by sending FLOGI, clean up old rpis */
5699 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes,
5700 nlp_listp) {
5701 if (!NLP_CHK_NODE_ACT(ndlp))
5702 continue;
5703 if (ndlp->nlp_state != NLP_STE_NPR_NODE)
5704 continue;
5705 if (ndlp->nlp_type & NLP_FABRIC) {
5706 /* Clean up the ndlp on Fabric connections */
5707 lpfc_drop_node(vport, ndlp);
5709 } else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) {
5710 /* Fail outstanding IO now since device
5711 * is marked for PLOGI.
5713 lpfc_unreg_rpi(vport, ndlp);
5716 if (vport->port_state != LPFC_FLOGI) {
5717 if (phba->sli_rev <= LPFC_SLI_REV3)
5718 lpfc_initial_flogi(vport);
5719 else
5720 lpfc_issue_init_vfi(vport);
5721 return;
5723 break;
5725 case LPFC_FDISC:
5726 case LPFC_FLOGI:
5727 /* port_state is identically LPFC_FLOGI while waiting for FLOGI cmpl */
5728 /* Initial FLOGI timeout */
5729 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
5730 "0222 Initial %s timeout\n",
5731 vport->vpi ? "FDISC" : "FLOGI");
5733 /* Assume no Fabric and go on with discovery.
5734 * Check for outstanding ELS FLOGI to abort.
5737 /* FLOGI failed, so just use loop map to make discovery list */
5738 lpfc_disc_list_loopmap(vport);
5740 /* Start discovery */
5741 lpfc_disc_start(vport);
5742 break;
5744 case LPFC_FABRIC_CFG_LINK:
5745 /* hba_state is identically LPFC_FABRIC_CFG_LINK while waiting for
5746 NameServer login */
5747 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
5748 "0223 Timeout while waiting for "
5749 "NameServer login\n");
5750 /* Next look for NameServer ndlp */
5751 ndlp = lpfc_findnode_did(vport, NameServer_DID);
5752 if (ndlp && NLP_CHK_NODE_ACT(ndlp))
5753 lpfc_els_abort(phba, ndlp);
5755 /* ReStart discovery */
5756 goto restart_disc;
5758 case LPFC_NS_QRY:
5759 /* Check for wait for NameServer Rsp timeout */
5760 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
5761 "0224 NameServer Query timeout "
5762 "Data: x%x x%x\n",
5763 vport->fc_ns_retry, LPFC_MAX_NS_RETRY);
5765 if (vport->fc_ns_retry < LPFC_MAX_NS_RETRY) {
5766 /* Try it one more time */
5767 vport->fc_ns_retry++;
5768 vport->gidft_inp = 0;
5769 rc = lpfc_issue_gidft(vport);
5770 if (rc == 0)
5771 break;
5773 vport->fc_ns_retry = 0;
5775 restart_disc:
5777 * Discovery is over.
5778 * set port_state to PORT_READY if SLI2.
5779 * cmpl_reg_vpi will set port_state to READY for SLI3.
5781 if (phba->sli_rev < LPFC_SLI_REV4) {
5782 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
5783 lpfc_issue_reg_vpi(phba, vport);
5784 else {
5785 lpfc_issue_clear_la(phba, vport);
5786 vport->port_state = LPFC_VPORT_READY;
5790 /* Setup and issue mailbox INITIALIZE LINK command */
5791 initlinkmbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
5792 if (!initlinkmbox) {
5793 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
5794 "0206 Device Discovery "
5795 "completion error\n");
5796 phba->link_state = LPFC_HBA_ERROR;
5797 break;
5800 lpfc_linkdown(phba);
5801 lpfc_init_link(phba, initlinkmbox, phba->cfg_topology,
5802 phba->cfg_link_speed);
5803 initlinkmbox->u.mb.un.varInitLnk.lipsr_AL_PA = 0;
5804 initlinkmbox->vport = vport;
5805 initlinkmbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
5806 rc = lpfc_sli_issue_mbox(phba, initlinkmbox, MBX_NOWAIT);
5807 lpfc_set_loopback_flag(phba);
5808 if (rc == MBX_NOT_FINISHED)
5809 mempool_free(initlinkmbox, phba->mbox_mem_pool);
5811 break;
5813 case LPFC_DISC_AUTH:
5814 /* Node Authentication timeout */
5815 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
5816 "0227 Node Authentication timeout\n");
5817 lpfc_disc_flush_list(vport);
5820 * set port_state to PORT_READY if SLI2.
5821 * cmpl_reg_vpi will set port_state to READY for SLI3.
5823 if (phba->sli_rev < LPFC_SLI_REV4) {
5824 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
5825 lpfc_issue_reg_vpi(phba, vport);
5826 else { /* NPIV Not enabled */
5827 lpfc_issue_clear_la(phba, vport);
5828 vport->port_state = LPFC_VPORT_READY;
5831 break;
5833 case LPFC_VPORT_READY:
5834 if (vport->fc_flag & FC_RSCN_MODE) {
5835 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
5836 "0231 RSCN timeout Data: x%x "
5837 "x%x\n",
5838 vport->fc_ns_retry, LPFC_MAX_NS_RETRY);
5840 /* Cleanup any outstanding ELS commands */
5841 lpfc_els_flush_cmd(vport);
5843 lpfc_els_flush_rscn(vport);
5844 lpfc_disc_flush_list(vport);
5846 break;
5848 default:
5849 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
5850 "0273 Unexpected discovery timeout, "
5851 "vport State x%x\n", vport->port_state);
5852 break;
5855 switch (phba->link_state) {
5856 case LPFC_CLEAR_LA:
5857 /* CLEAR LA timeout */
5858 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
5859 "0228 CLEAR LA timeout\n");
5860 clrlaerr = 1;
5861 break;
5863 case LPFC_LINK_UP:
5864 lpfc_issue_clear_la(phba, vport);
5865 /* Drop thru */
5866 case LPFC_LINK_UNKNOWN:
5867 case LPFC_WARM_START:
5868 case LPFC_INIT_START:
5869 case LPFC_INIT_MBX_CMDS:
5870 case LPFC_LINK_DOWN:
5871 case LPFC_HBA_ERROR:
5872 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
5873 "0230 Unexpected timeout, hba link "
5874 "state x%x\n", phba->link_state);
5875 clrlaerr = 1;
5876 break;
5878 case LPFC_HBA_READY:
5879 break;
5882 if (clrlaerr) {
5883 lpfc_disc_flush_list(vport);
5884 if (phba->sli_rev != LPFC_SLI_REV4) {
5885 psli->sli3_ring[(LPFC_EXTRA_RING)].flag &=
5886 ~LPFC_STOP_IOCB_EVENT;
5887 psli->sli3_ring[LPFC_FCP_RING].flag &=
5888 ~LPFC_STOP_IOCB_EVENT;
5890 vport->port_state = LPFC_VPORT_READY;
5892 return;
5896 * This routine handles processing a NameServer REG_LOGIN mailbox
5897 * command upon completion. It is setup in the LPFC_MBOXQ
5898 * as the completion routine when the command is
5899 * handed off to the SLI layer.
5901 void
5902 lpfc_mbx_cmpl_fdmi_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
5904 MAILBOX_t *mb = &pmb->u.mb;
5905 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *)(pmb->ctx_buf);
5906 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *)pmb->ctx_ndlp;
5907 struct lpfc_vport *vport = pmb->vport;
5909 pmb->ctx_buf = NULL;
5910 pmb->ctx_ndlp = NULL;
5912 if (phba->sli_rev < LPFC_SLI_REV4)
5913 ndlp->nlp_rpi = mb->un.varWords[0];
5914 ndlp->nlp_flag |= NLP_RPI_REGISTERED;
5915 ndlp->nlp_type |= NLP_FABRIC;
5916 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
5917 lpfc_printf_vlog(vport, KERN_INFO, LOG_SLI,
5918 "0004 rpi:%x DID:%x flg:%x %d map:%x %p\n",
5919 ndlp->nlp_rpi, ndlp->nlp_DID, ndlp->nlp_flag,
5920 kref_read(&ndlp->kref),
5921 ndlp->nlp_usg_map, ndlp);
5923 * Start issuing Fabric-Device Management Interface (FDMI) command to
5924 * 0xfffffa (FDMI well known port).
5925 * DHBA -> DPRT -> RHBA -> RPA (physical port)
5926 * DPRT -> RPRT (vports)
5928 if (vport->port_type == LPFC_PHYSICAL_PORT)
5929 lpfc_fdmi_cmd(vport, ndlp, SLI_MGMT_DHBA, 0);
5930 else
5931 lpfc_fdmi_cmd(vport, ndlp, SLI_MGMT_DPRT, 0);
5934 /* decrement the node reference count held for this callback
5935 * function.
5937 lpfc_nlp_put(ndlp);
5938 lpfc_mbuf_free(phba, mp->virt, mp->phys);
5939 kfree(mp);
5940 mempool_free(pmb, phba->mbox_mem_pool);
5942 return;
5945 static int
5946 lpfc_filter_by_rpi(struct lpfc_nodelist *ndlp, void *param)
5948 uint16_t *rpi = param;
5950 /* check for active node */
5951 if (!NLP_CHK_NODE_ACT(ndlp))
5952 return 0;
5954 return ndlp->nlp_rpi == *rpi;
5957 static int
5958 lpfc_filter_by_wwpn(struct lpfc_nodelist *ndlp, void *param)
5960 return memcmp(&ndlp->nlp_portname, param,
5961 sizeof(ndlp->nlp_portname)) == 0;
5964 static struct lpfc_nodelist *
5965 __lpfc_find_node(struct lpfc_vport *vport, node_filter filter, void *param)
5967 struct lpfc_nodelist *ndlp;
5969 list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
5970 if (filter(ndlp, param)) {
5971 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
5972 "3185 FIND node filter %p DID "
5973 "ndlp %p did x%x flg x%x st x%x "
5974 "xri x%x type x%x rpi x%x\n",
5975 filter, ndlp, ndlp->nlp_DID,
5976 ndlp->nlp_flag, ndlp->nlp_state,
5977 ndlp->nlp_xri, ndlp->nlp_type,
5978 ndlp->nlp_rpi);
5979 return ndlp;
5982 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
5983 "3186 FIND node filter %p NOT FOUND.\n", filter);
5984 return NULL;
5988 * This routine looks up the ndlp lists for the given RPI. If rpi found it
5989 * returns the node list element pointer else return NULL.
5991 struct lpfc_nodelist *
5992 __lpfc_findnode_rpi(struct lpfc_vport *vport, uint16_t rpi)
5994 return __lpfc_find_node(vport, lpfc_filter_by_rpi, &rpi);
5998 * This routine looks up the ndlp lists for the given WWPN. If WWPN found it
5999 * returns the node element list pointer else return NULL.
6001 struct lpfc_nodelist *
6002 lpfc_findnode_wwpn(struct lpfc_vport *vport, struct lpfc_name *wwpn)
6004 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
6005 struct lpfc_nodelist *ndlp;
6007 spin_lock_irq(shost->host_lock);
6008 ndlp = __lpfc_find_node(vport, lpfc_filter_by_wwpn, wwpn);
6009 spin_unlock_irq(shost->host_lock);
6010 return ndlp;
6014 * This routine looks up the ndlp lists for the given RPI. If the rpi
6015 * is found, the routine returns the node element list pointer else
6016 * return NULL.
6018 struct lpfc_nodelist *
6019 lpfc_findnode_rpi(struct lpfc_vport *vport, uint16_t rpi)
6021 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
6022 struct lpfc_nodelist *ndlp;
6024 spin_lock_irq(shost->host_lock);
6025 ndlp = __lpfc_findnode_rpi(vport, rpi);
6026 spin_unlock_irq(shost->host_lock);
6027 return ndlp;
6031 * lpfc_find_vport_by_vpid - Find a vport on a HBA through vport identifier
6032 * @phba: pointer to lpfc hba data structure.
6033 * @vpi: the physical host virtual N_Port identifier.
6035 * This routine finds a vport on a HBA (referred by @phba) through a
6036 * @vpi. The function walks the HBA's vport list and returns the address
6037 * of the vport with the matching @vpi.
6039 * Return code
6040 * NULL - No vport with the matching @vpi found
6041 * Otherwise - Address to the vport with the matching @vpi.
6043 struct lpfc_vport *
6044 lpfc_find_vport_by_vpid(struct lpfc_hba *phba, uint16_t vpi)
6046 struct lpfc_vport *vport;
6047 unsigned long flags;
6048 int i = 0;
6050 /* The physical ports are always vpi 0 - translate is unnecessary. */
6051 if (vpi > 0) {
6053 * Translate the physical vpi to the logical vpi. The
6054 * vport stores the logical vpi.
6056 for (i = 0; i < phba->max_vpi; i++) {
6057 if (vpi == phba->vpi_ids[i])
6058 break;
6061 if (i >= phba->max_vpi) {
6062 lpfc_printf_log(phba, KERN_ERR, LOG_ELS,
6063 "2936 Could not find Vport mapped "
6064 "to vpi %d\n", vpi);
6065 return NULL;
6069 spin_lock_irqsave(&phba->port_list_lock, flags);
6070 list_for_each_entry(vport, &phba->port_list, listentry) {
6071 if (vport->vpi == i) {
6072 spin_unlock_irqrestore(&phba->port_list_lock, flags);
6073 return vport;
6076 spin_unlock_irqrestore(&phba->port_list_lock, flags);
6077 return NULL;
6080 struct lpfc_nodelist *
6081 lpfc_nlp_init(struct lpfc_vport *vport, uint32_t did)
6083 struct lpfc_nodelist *ndlp;
6084 int rpi = LPFC_RPI_ALLOC_ERROR;
6086 if (vport->phba->sli_rev == LPFC_SLI_REV4) {
6087 rpi = lpfc_sli4_alloc_rpi(vport->phba);
6088 if (rpi == LPFC_RPI_ALLOC_ERROR)
6089 return NULL;
6092 ndlp = mempool_alloc(vport->phba->nlp_mem_pool, GFP_KERNEL);
6093 if (!ndlp) {
6094 if (vport->phba->sli_rev == LPFC_SLI_REV4)
6095 lpfc_sli4_free_rpi(vport->phba, rpi);
6096 return NULL;
6099 memset(ndlp, 0, sizeof (struct lpfc_nodelist));
6101 lpfc_initialize_node(vport, ndlp, did);
6102 INIT_LIST_HEAD(&ndlp->nlp_listp);
6103 if (vport->phba->sli_rev == LPFC_SLI_REV4) {
6104 ndlp->nlp_rpi = rpi;
6105 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
6106 "0007 rpi:%x DID:%x flg:%x refcnt:%d "
6107 "map:%x %p\n", ndlp->nlp_rpi, ndlp->nlp_DID,
6108 ndlp->nlp_flag,
6109 kref_read(&ndlp->kref),
6110 ndlp->nlp_usg_map, ndlp);
6112 ndlp->active_rrqs_xri_bitmap =
6113 mempool_alloc(vport->phba->active_rrq_pool,
6114 GFP_KERNEL);
6115 if (ndlp->active_rrqs_xri_bitmap)
6116 memset(ndlp->active_rrqs_xri_bitmap, 0,
6117 ndlp->phba->cfg_rrq_xri_bitmap_sz);
6122 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
6123 "node init: did:x%x",
6124 ndlp->nlp_DID, 0, 0);
6126 return ndlp;
6129 /* This routine releases all resources associated with a specifc NPort's ndlp
6130 * and mempool_free's the nodelist.
6132 static void
6133 lpfc_nlp_release(struct kref *kref)
6135 struct lpfc_hba *phba;
6136 unsigned long flags;
6137 struct lpfc_nodelist *ndlp = container_of(kref, struct lpfc_nodelist,
6138 kref);
6140 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
6141 "node release: did:x%x flg:x%x type:x%x",
6142 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
6144 lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE,
6145 "0279 lpfc_nlp_release: ndlp:x%p did %x "
6146 "usgmap:x%x refcnt:%d rpi:%x\n",
6147 (void *)ndlp, ndlp->nlp_DID, ndlp->nlp_usg_map,
6148 kref_read(&ndlp->kref), ndlp->nlp_rpi);
6150 /* remove ndlp from action. */
6151 lpfc_nlp_remove(ndlp->vport, ndlp);
6153 /* clear the ndlp active flag for all release cases */
6154 phba = ndlp->phba;
6155 spin_lock_irqsave(&phba->ndlp_lock, flags);
6156 NLP_CLR_NODE_ACT(ndlp);
6157 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
6158 if (phba->sli_rev == LPFC_SLI_REV4)
6159 lpfc_sli4_free_rpi(phba, ndlp->nlp_rpi);
6161 /* free ndlp memory for final ndlp release */
6162 if (NLP_CHK_FREE_REQ(ndlp)) {
6163 kfree(ndlp->lat_data);
6164 if (phba->sli_rev == LPFC_SLI_REV4)
6165 mempool_free(ndlp->active_rrqs_xri_bitmap,
6166 ndlp->phba->active_rrq_pool);
6167 mempool_free(ndlp, ndlp->phba->nlp_mem_pool);
6171 /* This routine bumps the reference count for a ndlp structure to ensure
6172 * that one discovery thread won't free a ndlp while another discovery thread
6173 * is using it.
6175 struct lpfc_nodelist *
6176 lpfc_nlp_get(struct lpfc_nodelist *ndlp)
6178 struct lpfc_hba *phba;
6179 unsigned long flags;
6181 if (ndlp) {
6182 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
6183 "node get: did:x%x flg:x%x refcnt:x%x",
6184 ndlp->nlp_DID, ndlp->nlp_flag,
6185 kref_read(&ndlp->kref));
6186 /* The check of ndlp usage to prevent incrementing the
6187 * ndlp reference count that is in the process of being
6188 * released.
6190 phba = ndlp->phba;
6191 spin_lock_irqsave(&phba->ndlp_lock, flags);
6192 if (!NLP_CHK_NODE_ACT(ndlp) || NLP_CHK_FREE_ACK(ndlp)) {
6193 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
6194 lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_NODE,
6195 "0276 lpfc_nlp_get: ndlp:x%p "
6196 "usgmap:x%x refcnt:%d\n",
6197 (void *)ndlp, ndlp->nlp_usg_map,
6198 kref_read(&ndlp->kref));
6199 return NULL;
6200 } else
6201 kref_get(&ndlp->kref);
6202 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
6204 return ndlp;
6207 /* This routine decrements the reference count for a ndlp structure. If the
6208 * count goes to 0, this indicates the the associated nodelist should be
6209 * freed. Returning 1 indicates the ndlp resource has been released; on the
6210 * other hand, returning 0 indicates the ndlp resource has not been released
6211 * yet.
6214 lpfc_nlp_put(struct lpfc_nodelist *ndlp)
6216 struct lpfc_hba *phba;
6217 unsigned long flags;
6219 if (!ndlp)
6220 return 1;
6222 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
6223 "node put: did:x%x flg:x%x refcnt:x%x",
6224 ndlp->nlp_DID, ndlp->nlp_flag,
6225 kref_read(&ndlp->kref));
6226 phba = ndlp->phba;
6227 spin_lock_irqsave(&phba->ndlp_lock, flags);
6228 /* Check the ndlp memory free acknowledge flag to avoid the
6229 * possible race condition that kref_put got invoked again
6230 * after previous one has done ndlp memory free.
6232 if (NLP_CHK_FREE_ACK(ndlp)) {
6233 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
6234 lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_NODE,
6235 "0274 lpfc_nlp_put: ndlp:x%p "
6236 "usgmap:x%x refcnt:%d\n",
6237 (void *)ndlp, ndlp->nlp_usg_map,
6238 kref_read(&ndlp->kref));
6239 return 1;
6241 /* Check the ndlp inactivate log flag to avoid the possible
6242 * race condition that kref_put got invoked again after ndlp
6243 * is already in inactivating state.
6245 if (NLP_CHK_IACT_REQ(ndlp)) {
6246 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
6247 lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_NODE,
6248 "0275 lpfc_nlp_put: ndlp:x%p "
6249 "usgmap:x%x refcnt:%d\n",
6250 (void *)ndlp, ndlp->nlp_usg_map,
6251 kref_read(&ndlp->kref));
6252 return 1;
6254 /* For last put, mark the ndlp usage flags to make sure no
6255 * other kref_get and kref_put on the same ndlp shall get
6256 * in between the process when the final kref_put has been
6257 * invoked on this ndlp.
6259 if (kref_read(&ndlp->kref) == 1) {
6260 /* Indicate ndlp is put to inactive state. */
6261 NLP_SET_IACT_REQ(ndlp);
6262 /* Acknowledge ndlp memory free has been seen. */
6263 if (NLP_CHK_FREE_REQ(ndlp))
6264 NLP_SET_FREE_ACK(ndlp);
6266 spin_unlock_irqrestore(&phba->ndlp_lock, flags);
6267 /* Note, the kref_put returns 1 when decrementing a reference
6268 * count that was 1, it invokes the release callback function,
6269 * but it still left the reference count as 1 (not actually
6270 * performs the last decrementation). Otherwise, it actually
6271 * decrements the reference count and returns 0.
6273 return kref_put(&ndlp->kref, lpfc_nlp_release);
6276 /* This routine free's the specified nodelist if it is not in use
6277 * by any other discovery thread. This routine returns 1 if the
6278 * ndlp has been freed. A return value of 0 indicates the ndlp is
6279 * not yet been released.
6282 lpfc_nlp_not_used(struct lpfc_nodelist *ndlp)
6284 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
6285 "node not used: did:x%x flg:x%x refcnt:x%x",
6286 ndlp->nlp_DID, ndlp->nlp_flag,
6287 kref_read(&ndlp->kref));
6288 if (kref_read(&ndlp->kref) == 1)
6289 if (lpfc_nlp_put(ndlp))
6290 return 1;
6291 return 0;
6295 * lpfc_fcf_inuse - Check if FCF can be unregistered.
6296 * @phba: Pointer to hba context object.
6298 * This function iterate through all FC nodes associated
6299 * will all vports to check if there is any node with
6300 * fc_rports associated with it. If there is an fc_rport
6301 * associated with the node, then the node is either in
6302 * discovered state or its devloss_timer is pending.
6304 static int
6305 lpfc_fcf_inuse(struct lpfc_hba *phba)
6307 struct lpfc_vport **vports;
6308 int i, ret = 0;
6309 struct lpfc_nodelist *ndlp;
6310 struct Scsi_Host *shost;
6312 vports = lpfc_create_vport_work_array(phba);
6314 /* If driver cannot allocate memory, indicate fcf is in use */
6315 if (!vports)
6316 return 1;
6318 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
6319 shost = lpfc_shost_from_vport(vports[i]);
6320 spin_lock_irq(shost->host_lock);
6322 * IF the CVL_RCVD bit is not set then we have sent the
6323 * flogi.
6324 * If dev_loss fires while we are waiting we do not want to
6325 * unreg the fcf.
6327 if (!(vports[i]->fc_flag & FC_VPORT_CVL_RCVD)) {
6328 spin_unlock_irq(shost->host_lock);
6329 ret = 1;
6330 goto out;
6332 list_for_each_entry(ndlp, &vports[i]->fc_nodes, nlp_listp) {
6333 if (NLP_CHK_NODE_ACT(ndlp) && ndlp->rport &&
6334 (ndlp->rport->roles & FC_RPORT_ROLE_FCP_TARGET)) {
6335 ret = 1;
6336 spin_unlock_irq(shost->host_lock);
6337 goto out;
6338 } else if (ndlp->nlp_flag & NLP_RPI_REGISTERED) {
6339 ret = 1;
6340 lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
6341 "2624 RPI %x DID %x flag %x "
6342 "still logged in\n",
6343 ndlp->nlp_rpi, ndlp->nlp_DID,
6344 ndlp->nlp_flag);
6347 spin_unlock_irq(shost->host_lock);
6349 out:
6350 lpfc_destroy_vport_work_array(phba, vports);
6351 return ret;
6355 * lpfc_unregister_vfi_cmpl - Completion handler for unreg vfi.
6356 * @phba: Pointer to hba context object.
6357 * @mboxq: Pointer to mailbox object.
6359 * This function frees memory associated with the mailbox command.
6361 void
6362 lpfc_unregister_vfi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
6364 struct lpfc_vport *vport = mboxq->vport;
6365 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
6367 if (mboxq->u.mb.mbxStatus) {
6368 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX,
6369 "2555 UNREG_VFI mbxStatus error x%x "
6370 "HBA state x%x\n",
6371 mboxq->u.mb.mbxStatus, vport->port_state);
6373 spin_lock_irq(shost->host_lock);
6374 phba->pport->fc_flag &= ~FC_VFI_REGISTERED;
6375 spin_unlock_irq(shost->host_lock);
6376 mempool_free(mboxq, phba->mbox_mem_pool);
6377 return;
6381 * lpfc_unregister_fcfi_cmpl - Completion handler for unreg fcfi.
6382 * @phba: Pointer to hba context object.
6383 * @mboxq: Pointer to mailbox object.
6385 * This function frees memory associated with the mailbox command.
6387 static void
6388 lpfc_unregister_fcfi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
6390 struct lpfc_vport *vport = mboxq->vport;
6392 if (mboxq->u.mb.mbxStatus) {
6393 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX,
6394 "2550 UNREG_FCFI mbxStatus error x%x "
6395 "HBA state x%x\n",
6396 mboxq->u.mb.mbxStatus, vport->port_state);
6398 mempool_free(mboxq, phba->mbox_mem_pool);
6399 return;
6403 * lpfc_unregister_fcf_prep - Unregister fcf record preparation
6404 * @phba: Pointer to hba context object.
6406 * This function prepare the HBA for unregistering the currently registered
6407 * FCF from the HBA. It performs unregistering, in order, RPIs, VPIs, and
6408 * VFIs.
6411 lpfc_unregister_fcf_prep(struct lpfc_hba *phba)
6413 struct lpfc_vport **vports;
6414 struct lpfc_nodelist *ndlp;
6415 struct Scsi_Host *shost;
6416 int i = 0, rc;
6418 /* Unregister RPIs */
6419 if (lpfc_fcf_inuse(phba))
6420 lpfc_unreg_hba_rpis(phba);
6422 /* At this point, all discovery is aborted */
6423 phba->pport->port_state = LPFC_VPORT_UNKNOWN;
6425 /* Unregister VPIs */
6426 vports = lpfc_create_vport_work_array(phba);
6427 if (vports && (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED))
6428 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
6429 /* Stop FLOGI/FDISC retries */
6430 ndlp = lpfc_findnode_did(vports[i], Fabric_DID);
6431 if (ndlp)
6432 lpfc_cancel_retry_delay_tmo(vports[i], ndlp);
6433 lpfc_cleanup_pending_mbox(vports[i]);
6434 if (phba->sli_rev == LPFC_SLI_REV4)
6435 lpfc_sli4_unreg_all_rpis(vports[i]);
6436 lpfc_mbx_unreg_vpi(vports[i]);
6437 shost = lpfc_shost_from_vport(vports[i]);
6438 spin_lock_irq(shost->host_lock);
6439 vports[i]->fc_flag |= FC_VPORT_NEEDS_INIT_VPI;
6440 vports[i]->vpi_state &= ~LPFC_VPI_REGISTERED;
6441 spin_unlock_irq(shost->host_lock);
6443 lpfc_destroy_vport_work_array(phba, vports);
6444 if (i == 0 && (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED))) {
6445 ndlp = lpfc_findnode_did(phba->pport, Fabric_DID);
6446 if (ndlp)
6447 lpfc_cancel_retry_delay_tmo(phba->pport, ndlp);
6448 lpfc_cleanup_pending_mbox(phba->pport);
6449 if (phba->sli_rev == LPFC_SLI_REV4)
6450 lpfc_sli4_unreg_all_rpis(phba->pport);
6451 lpfc_mbx_unreg_vpi(phba->pport);
6452 shost = lpfc_shost_from_vport(phba->pport);
6453 spin_lock_irq(shost->host_lock);
6454 phba->pport->fc_flag |= FC_VPORT_NEEDS_INIT_VPI;
6455 phba->pport->vpi_state &= ~LPFC_VPI_REGISTERED;
6456 spin_unlock_irq(shost->host_lock);
6459 /* Cleanup any outstanding ELS commands */
6460 lpfc_els_flush_all_cmd(phba);
6462 /* Unregister the physical port VFI */
6463 rc = lpfc_issue_unreg_vfi(phba->pport);
6464 return rc;
6468 * lpfc_sli4_unregister_fcf - Unregister currently registered FCF record
6469 * @phba: Pointer to hba context object.
6471 * This function issues synchronous unregister FCF mailbox command to HBA to
6472 * unregister the currently registered FCF record. The driver does not reset
6473 * the driver FCF usage state flags.
6475 * Return 0 if successfully issued, none-zero otherwise.
6478 lpfc_sli4_unregister_fcf(struct lpfc_hba *phba)
6480 LPFC_MBOXQ_t *mbox;
6481 int rc;
6483 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
6484 if (!mbox) {
6485 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX,
6486 "2551 UNREG_FCFI mbox allocation failed"
6487 "HBA state x%x\n", phba->pport->port_state);
6488 return -ENOMEM;
6490 lpfc_unreg_fcfi(mbox, phba->fcf.fcfi);
6491 mbox->vport = phba->pport;
6492 mbox->mbox_cmpl = lpfc_unregister_fcfi_cmpl;
6493 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
6495 if (rc == MBX_NOT_FINISHED) {
6496 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
6497 "2552 Unregister FCFI command failed rc x%x "
6498 "HBA state x%x\n",
6499 rc, phba->pport->port_state);
6500 return -EINVAL;
6502 return 0;
6506 * lpfc_unregister_fcf_rescan - Unregister currently registered fcf and rescan
6507 * @phba: Pointer to hba context object.
6509 * This function unregisters the currently reigstered FCF. This function
6510 * also tries to find another FCF for discovery by rescan the HBA FCF table.
6512 void
6513 lpfc_unregister_fcf_rescan(struct lpfc_hba *phba)
6515 int rc;
6517 /* Preparation for unregistering fcf */
6518 rc = lpfc_unregister_fcf_prep(phba);
6519 if (rc) {
6520 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY,
6521 "2748 Failed to prepare for unregistering "
6522 "HBA's FCF record: rc=%d\n", rc);
6523 return;
6526 /* Now, unregister FCF record and reset HBA FCF state */
6527 rc = lpfc_sli4_unregister_fcf(phba);
6528 if (rc)
6529 return;
6530 /* Reset HBA FCF states after successful unregister FCF */
6531 phba->fcf.fcf_flag = 0;
6532 phba->fcf.current_rec.flag = 0;
6535 * If driver is not unloading, check if there is any other
6536 * FCF record that can be used for discovery.
6538 if ((phba->pport->load_flag & FC_UNLOADING) ||
6539 (phba->link_state < LPFC_LINK_UP))
6540 return;
6542 /* This is considered as the initial FCF discovery scan */
6543 spin_lock_irq(&phba->hbalock);
6544 phba->fcf.fcf_flag |= FCF_INIT_DISC;
6545 spin_unlock_irq(&phba->hbalock);
6547 /* Reset FCF roundrobin bmask for new discovery */
6548 lpfc_sli4_clear_fcf_rr_bmask(phba);
6550 rc = lpfc_sli4_fcf_scan_read_fcf_rec(phba, LPFC_FCOE_FCF_GET_FIRST);
6552 if (rc) {
6553 spin_lock_irq(&phba->hbalock);
6554 phba->fcf.fcf_flag &= ~FCF_INIT_DISC;
6555 spin_unlock_irq(&phba->hbalock);
6556 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX,
6557 "2553 lpfc_unregister_unused_fcf failed "
6558 "to read FCF record HBA state x%x\n",
6559 phba->pport->port_state);
6564 * lpfc_unregister_fcf - Unregister the currently registered fcf record
6565 * @phba: Pointer to hba context object.
6567 * This function just unregisters the currently reigstered FCF. It does not
6568 * try to find another FCF for discovery.
6570 void
6571 lpfc_unregister_fcf(struct lpfc_hba *phba)
6573 int rc;
6575 /* Preparation for unregistering fcf */
6576 rc = lpfc_unregister_fcf_prep(phba);
6577 if (rc) {
6578 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY,
6579 "2749 Failed to prepare for unregistering "
6580 "HBA's FCF record: rc=%d\n", rc);
6581 return;
6584 /* Now, unregister FCF record and reset HBA FCF state */
6585 rc = lpfc_sli4_unregister_fcf(phba);
6586 if (rc)
6587 return;
6588 /* Set proper HBA FCF states after successful unregister FCF */
6589 spin_lock_irq(&phba->hbalock);
6590 phba->fcf.fcf_flag &= ~FCF_REGISTERED;
6591 spin_unlock_irq(&phba->hbalock);
6595 * lpfc_unregister_unused_fcf - Unregister FCF if all devices are disconnected.
6596 * @phba: Pointer to hba context object.
6598 * This function check if there are any connected remote port for the FCF and
6599 * if all the devices are disconnected, this function unregister FCFI.
6600 * This function also tries to use another FCF for discovery.
6602 void
6603 lpfc_unregister_unused_fcf(struct lpfc_hba *phba)
6606 * If HBA is not running in FIP mode, if HBA does not support
6607 * FCoE, if FCF discovery is ongoing, or if FCF has not been
6608 * registered, do nothing.
6610 spin_lock_irq(&phba->hbalock);
6611 if (!(phba->hba_flag & HBA_FCOE_MODE) ||
6612 !(phba->fcf.fcf_flag & FCF_REGISTERED) ||
6613 !(phba->hba_flag & HBA_FIP_SUPPORT) ||
6614 (phba->fcf.fcf_flag & FCF_DISCOVERY) ||
6615 (phba->pport->port_state == LPFC_FLOGI)) {
6616 spin_unlock_irq(&phba->hbalock);
6617 return;
6619 spin_unlock_irq(&phba->hbalock);
6621 if (lpfc_fcf_inuse(phba))
6622 return;
6624 lpfc_unregister_fcf_rescan(phba);
6628 * lpfc_read_fcf_conn_tbl - Create driver FCF connection table.
6629 * @phba: Pointer to hba context object.
6630 * @buff: Buffer containing the FCF connection table as in the config
6631 * region.
6632 * This function create driver data structure for the FCF connection
6633 * record table read from config region 23.
6635 static void
6636 lpfc_read_fcf_conn_tbl(struct lpfc_hba *phba,
6637 uint8_t *buff)
6639 struct lpfc_fcf_conn_entry *conn_entry, *next_conn_entry;
6640 struct lpfc_fcf_conn_hdr *conn_hdr;
6641 struct lpfc_fcf_conn_rec *conn_rec;
6642 uint32_t record_count;
6643 int i;
6645 /* Free the current connect table */
6646 list_for_each_entry_safe(conn_entry, next_conn_entry,
6647 &phba->fcf_conn_rec_list, list) {
6648 list_del_init(&conn_entry->list);
6649 kfree(conn_entry);
6652 conn_hdr = (struct lpfc_fcf_conn_hdr *) buff;
6653 record_count = conn_hdr->length * sizeof(uint32_t)/
6654 sizeof(struct lpfc_fcf_conn_rec);
6656 conn_rec = (struct lpfc_fcf_conn_rec *)
6657 (buff + sizeof(struct lpfc_fcf_conn_hdr));
6659 for (i = 0; i < record_count; i++) {
6660 if (!(conn_rec[i].flags & FCFCNCT_VALID))
6661 continue;
6662 conn_entry = kzalloc(sizeof(struct lpfc_fcf_conn_entry),
6663 GFP_KERNEL);
6664 if (!conn_entry) {
6665 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6666 "2566 Failed to allocate connection"
6667 " table entry\n");
6668 return;
6671 memcpy(&conn_entry->conn_rec, &conn_rec[i],
6672 sizeof(struct lpfc_fcf_conn_rec));
6673 list_add_tail(&conn_entry->list,
6674 &phba->fcf_conn_rec_list);
6677 if (!list_empty(&phba->fcf_conn_rec_list)) {
6678 i = 0;
6679 list_for_each_entry(conn_entry, &phba->fcf_conn_rec_list,
6680 list) {
6681 conn_rec = &conn_entry->conn_rec;
6682 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
6683 "3345 FCF connection list rec[%02d]: "
6684 "flags:x%04x, vtag:x%04x, "
6685 "fabric_name:x%02x:%02x:%02x:%02x:"
6686 "%02x:%02x:%02x:%02x, "
6687 "switch_name:x%02x:%02x:%02x:%02x:"
6688 "%02x:%02x:%02x:%02x\n", i++,
6689 conn_rec->flags, conn_rec->vlan_tag,
6690 conn_rec->fabric_name[0],
6691 conn_rec->fabric_name[1],
6692 conn_rec->fabric_name[2],
6693 conn_rec->fabric_name[3],
6694 conn_rec->fabric_name[4],
6695 conn_rec->fabric_name[5],
6696 conn_rec->fabric_name[6],
6697 conn_rec->fabric_name[7],
6698 conn_rec->switch_name[0],
6699 conn_rec->switch_name[1],
6700 conn_rec->switch_name[2],
6701 conn_rec->switch_name[3],
6702 conn_rec->switch_name[4],
6703 conn_rec->switch_name[5],
6704 conn_rec->switch_name[6],
6705 conn_rec->switch_name[7]);
6711 * lpfc_read_fcoe_param - Read FCoe parameters from conf region..
6712 * @phba: Pointer to hba context object.
6713 * @buff: Buffer containing the FCoE parameter data structure.
6715 * This function update driver data structure with config
6716 * parameters read from config region 23.
6718 static void
6719 lpfc_read_fcoe_param(struct lpfc_hba *phba,
6720 uint8_t *buff)
6722 struct lpfc_fip_param_hdr *fcoe_param_hdr;
6723 struct lpfc_fcoe_params *fcoe_param;
6725 fcoe_param_hdr = (struct lpfc_fip_param_hdr *)
6726 buff;
6727 fcoe_param = (struct lpfc_fcoe_params *)
6728 (buff + sizeof(struct lpfc_fip_param_hdr));
6730 if ((fcoe_param_hdr->parm_version != FIPP_VERSION) ||
6731 (fcoe_param_hdr->length != FCOE_PARAM_LENGTH))
6732 return;
6734 if (fcoe_param_hdr->parm_flags & FIPP_VLAN_VALID) {
6735 phba->valid_vlan = 1;
6736 phba->vlan_id = le16_to_cpu(fcoe_param->vlan_tag) &
6737 0xFFF;
6740 phba->fc_map[0] = fcoe_param->fc_map[0];
6741 phba->fc_map[1] = fcoe_param->fc_map[1];
6742 phba->fc_map[2] = fcoe_param->fc_map[2];
6743 return;
6747 * lpfc_get_rec_conf23 - Get a record type in config region data.
6748 * @buff: Buffer containing config region 23 data.
6749 * @size: Size of the data buffer.
6750 * @rec_type: Record type to be searched.
6752 * This function searches config region data to find the beginning
6753 * of the record specified by record_type. If record found, this
6754 * function return pointer to the record else return NULL.
6756 static uint8_t *
6757 lpfc_get_rec_conf23(uint8_t *buff, uint32_t size, uint8_t rec_type)
6759 uint32_t offset = 0, rec_length;
6761 if ((buff[0] == LPFC_REGION23_LAST_REC) ||
6762 (size < sizeof(uint32_t)))
6763 return NULL;
6765 rec_length = buff[offset + 1];
6768 * One TLV record has one word header and number of data words
6769 * specified in the rec_length field of the record header.
6771 while ((offset + rec_length * sizeof(uint32_t) + sizeof(uint32_t))
6772 <= size) {
6773 if (buff[offset] == rec_type)
6774 return &buff[offset];
6776 if (buff[offset] == LPFC_REGION23_LAST_REC)
6777 return NULL;
6779 offset += rec_length * sizeof(uint32_t) + sizeof(uint32_t);
6780 rec_length = buff[offset + 1];
6782 return NULL;
6786 * lpfc_parse_fcoe_conf - Parse FCoE config data read from config region 23.
6787 * @phba: Pointer to lpfc_hba data structure.
6788 * @buff: Buffer containing config region 23 data.
6789 * @size: Size of the data buffer.
6791 * This function parses the FCoE config parameters in config region 23 and
6792 * populate driver data structure with the parameters.
6794 void
6795 lpfc_parse_fcoe_conf(struct lpfc_hba *phba,
6796 uint8_t *buff,
6797 uint32_t size)
6799 uint32_t offset = 0;
6800 uint8_t *rec_ptr;
6803 * If data size is less than 2 words signature and version cannot be
6804 * verified.
6806 if (size < 2*sizeof(uint32_t))
6807 return;
6809 /* Check the region signature first */
6810 if (memcmp(buff, LPFC_REGION23_SIGNATURE, 4)) {
6811 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6812 "2567 Config region 23 has bad signature\n");
6813 return;
6816 offset += 4;
6818 /* Check the data structure version */
6819 if (buff[offset] != LPFC_REGION23_VERSION) {
6820 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6821 "2568 Config region 23 has bad version\n");
6822 return;
6824 offset += 4;
6826 /* Read FCoE param record */
6827 rec_ptr = lpfc_get_rec_conf23(&buff[offset],
6828 size - offset, FCOE_PARAM_TYPE);
6829 if (rec_ptr)
6830 lpfc_read_fcoe_param(phba, rec_ptr);
6832 /* Read FCF connection table */
6833 rec_ptr = lpfc_get_rec_conf23(&buff[offset],
6834 size - offset, FCOE_CONN_TBL_TYPE);
6835 if (rec_ptr)
6836 lpfc_read_fcf_conn_tbl(phba, rec_ptr);