Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1/*******************************************************************
2 * This file is part of the Emulex Linux Device Driver for *
3 * Fibre Channel Host Bus Adapters. *
4 * Copyright (C) 2017-2026 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 *******************************************************************/
23
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>
31#include <linux/utsname.h>
32
33#include <scsi/scsi.h>
34#include <scsi/scsi_device.h>
35#include <scsi/scsi_host.h>
36#include <scsi/scsi_transport_fc.h>
37#include <scsi/fc/fc_fs.h>
38
39#include "lpfc_hw4.h"
40#include "lpfc_hw.h"
41#include "lpfc_nl.h"
42#include "lpfc_disc.h"
43#include "lpfc_sli.h"
44#include "lpfc_sli4.h"
45#include "lpfc.h"
46#include "lpfc_scsi.h"
47#include "lpfc_nvme.h"
48#include "lpfc_logmsg.h"
49#include "lpfc_crtn.h"
50#include "lpfc_vport.h"
51#include "lpfc_debugfs.h"
52
53/* AlpaArray for assignment of scsid for scan-down and bind_method */
54static uint8_t lpfcAlpaArray[] = {
55 0xEF, 0xE8, 0xE4, 0xE2, 0xE1, 0xE0, 0xDC, 0xDA, 0xD9, 0xD6,
56 0xD5, 0xD4, 0xD3, 0xD2, 0xD1, 0xCE, 0xCD, 0xCC, 0xCB, 0xCA,
57 0xC9, 0xC7, 0xC6, 0xC5, 0xC3, 0xBC, 0xBA, 0xB9, 0xB6, 0xB5,
58 0xB4, 0xB3, 0xB2, 0xB1, 0xAE, 0xAD, 0xAC, 0xAB, 0xAA, 0xA9,
59 0xA7, 0xA6, 0xA5, 0xA3, 0x9F, 0x9E, 0x9D, 0x9B, 0x98, 0x97,
60 0x90, 0x8F, 0x88, 0x84, 0x82, 0x81, 0x80, 0x7C, 0x7A, 0x79,
61 0x76, 0x75, 0x74, 0x73, 0x72, 0x71, 0x6E, 0x6D, 0x6C, 0x6B,
62 0x6A, 0x69, 0x67, 0x66, 0x65, 0x63, 0x5C, 0x5A, 0x59, 0x56,
63 0x55, 0x54, 0x53, 0x52, 0x51, 0x4E, 0x4D, 0x4C, 0x4B, 0x4A,
64 0x49, 0x47, 0x46, 0x45, 0x43, 0x3C, 0x3A, 0x39, 0x36, 0x35,
65 0x34, 0x33, 0x32, 0x31, 0x2E, 0x2D, 0x2C, 0x2B, 0x2A, 0x29,
66 0x27, 0x26, 0x25, 0x23, 0x1F, 0x1E, 0x1D, 0x1B, 0x18, 0x17,
67 0x10, 0x0F, 0x08, 0x04, 0x02, 0x01
68};
69
70static void lpfc_disc_timeout_handler(struct lpfc_vport *);
71static void lpfc_disc_flush_list(struct lpfc_vport *vport);
72static void lpfc_unregister_fcfi_cmpl(struct lpfc_hba *, LPFC_MBOXQ_t *);
73static int lpfc_fcf_inuse(struct lpfc_hba *);
74static void lpfc_mbx_cmpl_read_sparam(struct lpfc_hba *, LPFC_MBOXQ_t *);
75static void lpfc_check_inactive_vmid(struct lpfc_hba *phba);
76static void lpfc_check_vmid_qfpa_issue(struct lpfc_hba *phba);
77
78static int
79lpfc_valid_xpt_node(struct lpfc_nodelist *ndlp)
80{
81 if (ndlp->nlp_fc4_type ||
82 ndlp->nlp_type & NLP_FABRIC)
83 return 1;
84 return 0;
85}
86/* The source of a terminate rport I/O is either a dev_loss_tmo
87 * event or a call to fc_remove_host. While the rport should be
88 * valid during these downcalls, the transport can call twice
89 * in a single event. This routine provides somoe protection
90 * as the NDLP isn't really free, just released to the pool.
91 */
92static int
93lpfc_rport_invalid(struct fc_rport *rport)
94{
95 struct lpfc_rport_data *rdata;
96 struct lpfc_nodelist *ndlp;
97
98 if (!rport) {
99 pr_err("**** %s: NULL rport, exit.\n", __func__);
100 return -EINVAL;
101 }
102
103 if (rport->flags & FC_RPORT_DEVLOSS_CALLBK_DONE) {
104 pr_info("**** %s: devloss_callbk_done rport x%px SID x%x\n",
105 __func__, rport, rport->scsi_target_id);
106 return -EINVAL;
107 }
108
109 rdata = rport->dd_data;
110 if (!rdata) {
111 pr_err("**** %s: NULL dd_data on rport x%px SID x%x\n",
112 __func__, rport, rport->scsi_target_id);
113 return -EINVAL;
114 }
115
116 ndlp = rdata->pnode;
117 if (!rdata->pnode) {
118 pr_info("**** %s: NULL ndlp on rport x%px SID x%x\n",
119 __func__, rport, rport->scsi_target_id);
120 return -EINVAL;
121 }
122
123 if (!ndlp->vport) {
124 pr_err("**** %s: Null vport on ndlp x%px, DID x%x rport x%px "
125 "SID x%x\n", __func__, ndlp, ndlp->nlp_DID, rport,
126 rport->scsi_target_id);
127 return -EINVAL;
128 }
129 return 0;
130}
131
132void
133lpfc_terminate_rport_io(struct fc_rport *rport)
134{
135 struct lpfc_rport_data *rdata;
136 struct lpfc_nodelist *ndlp;
137 struct lpfc_vport *vport;
138
139 if (lpfc_rport_invalid(rport))
140 return;
141
142 rdata = rport->dd_data;
143 ndlp = rdata->pnode;
144 vport = ndlp->vport;
145 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
146 "rport terminate: sid:x%x did:x%x flg:x%lx",
147 ndlp->nlp_sid, ndlp->nlp_DID, ndlp->nlp_flag);
148
149 if (ndlp->nlp_sid != NLP_NO_SID)
150 lpfc_sli_abort_iocb(vport, ndlp->nlp_sid, 0, LPFC_CTX_TGT);
151}
152
153/*
154 * This function will be called when dev_loss_tmo fire.
155 */
156void
157lpfc_dev_loss_tmo_callbk(struct fc_rport *rport)
158{
159 struct lpfc_nodelist *ndlp;
160 struct lpfc_vport *vport;
161 struct lpfc_hba *phba;
162 struct lpfc_work_evt *evtp;
163 unsigned long iflags;
164 bool drop_initial_node_ref = false;
165
166 ndlp = ((struct lpfc_rport_data *)rport->dd_data)->pnode;
167 if (!ndlp)
168 return;
169
170 vport = ndlp->vport;
171 phba = vport->phba;
172
173 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
174 "rport devlosscb: sid:x%x did:x%x flg:x%lx",
175 ndlp->nlp_sid, ndlp->nlp_DID, ndlp->nlp_flag);
176
177 lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE,
178 "3181 dev_loss_callbk x%06x, rport x%px flg x%lx "
179 "load_flag x%lx refcnt %u state %d xpt x%x\n",
180 ndlp->nlp_DID, ndlp->rport, ndlp->nlp_flag,
181 vport->load_flag, kref_read(&ndlp->kref),
182 ndlp->nlp_state, ndlp->fc4_xpt_flags);
183
184 /* Don't schedule a worker thread event if the vport is going down. */
185 if (test_bit(FC_UNLOADING, &vport->load_flag) ||
186 (phba->sli_rev == LPFC_SLI_REV4 &&
187 !test_bit(HBA_SETUP, &phba->hba_flag))) {
188
189 spin_lock_irqsave(&ndlp->lock, iflags);
190 ndlp->rport = NULL;
191
192 /* Only 1 thread can drop the initial node reference.
193 * If not registered for NVME and NLP_DROPPED flag is
194 * clear, remove the initial reference.
195 */
196 if (!(ndlp->fc4_xpt_flags & NVME_XPT_REGD))
197 if (!test_and_set_bit(NLP_DROPPED, &ndlp->nlp_flag))
198 drop_initial_node_ref = true;
199
200 /* The scsi_transport is done with the rport so lpfc cannot
201 * call to unregister.
202 */
203 if (ndlp->fc4_xpt_flags & SCSI_XPT_REGD) {
204 ndlp->fc4_xpt_flags &= ~SCSI_XPT_REGD;
205
206 /* If NLP_XPT_REGD was cleared in lpfc_nlp_unreg_node,
207 * unregister calls were made to the scsi and nvme
208 * transports and refcnt was already decremented. Clear
209 * the NLP_XPT_REGD flag only if the NVME nrport is
210 * confirmed unregistered.
211 */
212 if (ndlp->fc4_xpt_flags & NLP_XPT_REGD) {
213 if (!(ndlp->fc4_xpt_flags & NVME_XPT_REGD))
214 ndlp->fc4_xpt_flags &= ~NLP_XPT_REGD;
215 spin_unlock_irqrestore(&ndlp->lock, iflags);
216
217 /* Release scsi transport reference */
218 lpfc_nlp_put(ndlp);
219 } else {
220 spin_unlock_irqrestore(&ndlp->lock, iflags);
221 }
222 } else {
223 spin_unlock_irqrestore(&ndlp->lock, iflags);
224 }
225
226 if (drop_initial_node_ref)
227 lpfc_nlp_put(ndlp);
228 return;
229 }
230
231 if (ndlp->nlp_state == NLP_STE_MAPPED_NODE)
232 return;
233
234 /* Ignore callback for a mismatched (stale) rport */
235 if (ndlp->rport != rport) {
236 lpfc_vlog_msg(vport, KERN_WARNING, LOG_NODE,
237 "6788 fc rport mismatch: d_id x%06x ndlp x%px "
238 "fc rport x%px node rport x%px state x%x "
239 "refcnt %u\n",
240 ndlp->nlp_DID, ndlp, rport, ndlp->rport,
241 ndlp->nlp_state, kref_read(&ndlp->kref));
242 return;
243 }
244
245 if (rport->port_name != wwn_to_u64(ndlp->nlp_portname.u.wwn))
246 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
247 "6789 rport name %llx != node port name %llx",
248 rport->port_name,
249 wwn_to_u64(ndlp->nlp_portname.u.wwn));
250
251 evtp = &ndlp->dev_loss_evt;
252
253 if (!list_empty(&evtp->evt_listp)) {
254 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
255 "6790 rport name %llx dev_loss_evt pending\n",
256 rport->port_name);
257 return;
258 }
259
260 set_bit(NLP_IN_DEV_LOSS, &ndlp->nlp_flag);
261
262 spin_lock_irqsave(&ndlp->lock, iflags);
263 /* If there is a PLOGI in progress, and we are in a
264 * NLP_NPR_2B_DISC state, don't turn off the flag.
265 */
266 if (ndlp->nlp_state != NLP_STE_PLOGI_ISSUE)
267 clear_bit(NLP_NPR_2B_DISC, &ndlp->nlp_flag);
268
269 /*
270 * The backend does not expect any more calls associated with this
271 * rport. Remove the association between rport and ndlp.
272 */
273 ndlp->fc4_xpt_flags &= ~SCSI_XPT_REGD;
274 ((struct lpfc_rport_data *)rport->dd_data)->pnode = NULL;
275 ndlp->rport = NULL;
276 spin_unlock_irqrestore(&ndlp->lock, iflags);
277
278 if (phba->worker_thread) {
279 /* We need to hold the node by incrementing the reference
280 * count until this queued work is done
281 */
282 evtp->evt_arg1 = lpfc_nlp_get(ndlp);
283
284 spin_lock_irqsave(&phba->hbalock, iflags);
285 if (evtp->evt_arg1) {
286 evtp->evt = LPFC_EVT_DEV_LOSS;
287 list_add_tail(&evtp->evt_listp, &phba->work_list);
288 spin_unlock_irqrestore(&phba->hbalock, iflags);
289 lpfc_worker_wake_up(phba);
290 return;
291 }
292 spin_unlock_irqrestore(&phba->hbalock, iflags);
293 } else {
294 lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE,
295 "3188 worker thread is stopped %s x%06x, "
296 " rport x%px flg x%lx load_flag x%lx refcnt "
297 "%d\n", __func__, ndlp->nlp_DID,
298 ndlp->rport, ndlp->nlp_flag,
299 vport->load_flag, kref_read(&ndlp->kref));
300 if (!(ndlp->fc4_xpt_flags & NVME_XPT_REGD)) {
301 /* Node is in dev loss. No further transaction. */
302 clear_bit(NLP_IN_DEV_LOSS, &ndlp->nlp_flag);
303 lpfc_disc_state_machine(vport, ndlp, NULL,
304 NLP_EVT_DEVICE_RM);
305 }
306 }
307}
308
309/**
310 * lpfc_check_inactive_vmid_one - VMID inactivity checker for a vport
311 * @vport: Pointer to vport context object.
312 *
313 * This function checks for idle VMID entries related to a particular vport. If
314 * found unused/idle, free them accordingly.
315 **/
316static void lpfc_check_inactive_vmid_one(struct lpfc_vport *vport)
317{
318 u16 keep;
319 u32 difftime = 0, r, bucket;
320 u64 *lta;
321 int cpu;
322 struct lpfc_vmid *vmp;
323
324 write_lock(&vport->vmid_lock);
325
326 if (!vport->cur_vmid_cnt)
327 goto out;
328
329 /* iterate through the table */
330 hash_for_each(vport->hash_table, bucket, vmp, hnode) {
331 keep = 0;
332 if (vmp->flag & LPFC_VMID_REGISTERED) {
333 /* check if the particular VMID is in use */
334 /* for all available per cpu variable */
335 for_each_possible_cpu(cpu) {
336 /* if last access time is less than timeout */
337 lta = per_cpu_ptr(vmp->last_io_time, cpu);
338 if (!lta)
339 continue;
340 difftime = (jiffies) - (*lta);
341 if ((vport->vmid_inactivity_timeout *
342 JIFFIES_PER_HR) > difftime) {
343 keep = 1;
344 break;
345 }
346 }
347
348 /* if none of the cpus have been used by the vm, */
349 /* remove the entry if already registered */
350 if (!keep) {
351 /* mark the entry for deregistration */
352 vmp->flag = LPFC_VMID_DE_REGISTER;
353 write_unlock(&vport->vmid_lock);
354 if (vport->vmid_priority_tagging)
355 r = lpfc_vmid_uvem(vport, vmp, false);
356 else
357 r = lpfc_vmid_cmd(vport,
358 SLI_CTAS_DAPP_IDENT,
359 vmp);
360
361 /* decrement number of active vms and mark */
362 /* entry in slot as free */
363 write_lock(&vport->vmid_lock);
364 if (!r) {
365 struct lpfc_vmid *ht = vmp;
366
367 vport->cur_vmid_cnt--;
368 ht->flag = LPFC_VMID_SLOT_FREE;
369 free_percpu(ht->last_io_time);
370 ht->last_io_time = NULL;
371 hash_del(&ht->hnode);
372 }
373 }
374 }
375 }
376 out:
377 write_unlock(&vport->vmid_lock);
378}
379
380/**
381 * lpfc_check_inactive_vmid - VMID inactivity checker
382 * @phba: Pointer to hba context object.
383 *
384 * This function is called from the worker thread to determine if an entry in
385 * the VMID table can be released since there was no I/O activity seen from that
386 * particular VM for the specified time. When this happens, the entry in the
387 * table is released and also the resources on the switch cleared.
388 **/
389
390static void lpfc_check_inactive_vmid(struct lpfc_hba *phba)
391{
392 struct lpfc_vport *vport;
393 struct lpfc_vport **vports;
394 int i;
395
396 vports = lpfc_create_vport_work_array(phba);
397 if (!vports)
398 return;
399
400 for (i = 0; i <= phba->max_vports; i++) {
401 if ((!vports[i]) && (i == 0))
402 vport = phba->pport;
403 else
404 vport = vports[i];
405 if (!vport)
406 break;
407
408 lpfc_check_inactive_vmid_one(vport);
409 }
410 lpfc_destroy_vport_work_array(phba, vports);
411}
412
413/**
414 * lpfc_check_nlp_post_devloss - Check to restore ndlp refcnt after devloss
415 * @vport: Pointer to vport object.
416 * @ndlp: Pointer to remote node object.
417 *
418 * If NLP_IN_RECOV_POST_DEV_LOSS flag was set due to outstanding recovery of
419 * node during dev_loss_tmo processing, then this function restores the nlp_put
420 * kref decrement from lpfc_dev_loss_tmo_handler.
421 **/
422void
423lpfc_check_nlp_post_devloss(struct lpfc_vport *vport,
424 struct lpfc_nodelist *ndlp)
425{
426 if (test_and_clear_bit(NLP_IN_RECOV_POST_DEV_LOSS, &ndlp->save_flags)) {
427 clear_bit(NLP_DROPPED, &ndlp->nlp_flag);
428 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY | LOG_NODE,
429 "8438 Devloss timeout reversed on DID x%x "
430 "refcnt %d ndlp %p flag x%lx "
431 "port_state = x%x\n",
432 ndlp->nlp_DID, kref_read(&ndlp->kref), ndlp,
433 ndlp->nlp_flag, vport->port_state);
434 }
435}
436
437/**
438 * lpfc_dev_loss_tmo_handler - Remote node devloss timeout handler
439 * @ndlp: Pointer to remote node object.
440 *
441 * This function is called from the worker thread when devloss timeout timer
442 * expires. For SLI4 host, this routine shall return 1 when at lease one
443 * remote node, including this @ndlp, is still in use of FCF; otherwise, this
444 * routine shall return 0 when there is no remote node is still in use of FCF
445 * when devloss timeout happened to this @ndlp.
446 **/
447static int
448lpfc_dev_loss_tmo_handler(struct lpfc_nodelist *ndlp)
449{
450 struct lpfc_vport *vport;
451 struct lpfc_hba *phba;
452 uint8_t *name;
453 int warn_on = 0;
454 int fcf_inuse = 0;
455 bool recovering = false;
456 struct fc_vport *fc_vport = NULL;
457 unsigned long iflags;
458
459 vport = ndlp->vport;
460 name = (uint8_t *)&ndlp->nlp_portname;
461 phba = vport->phba;
462
463 if (phba->sli_rev == LPFC_SLI_REV4)
464 fcf_inuse = lpfc_fcf_inuse(phba);
465
466 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
467 "rport devlosstmo:did:x%x type:x%x id:x%x",
468 ndlp->nlp_DID, ndlp->nlp_type, ndlp->nlp_sid);
469
470 lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE,
471 "3182 %s x%06x, nflag x%lx xflags x%x refcnt %d\n",
472 __func__, ndlp->nlp_DID, ndlp->nlp_flag,
473 ndlp->fc4_xpt_flags, kref_read(&ndlp->kref));
474
475 /* If the driver is recovering the rport, ignore devloss. */
476 if (ndlp->nlp_state == NLP_STE_MAPPED_NODE) {
477 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
478 "0284 Devloss timeout Ignored on "
479 "WWPN %x:%x:%x:%x:%x:%x:%x:%x "
480 "NPort x%x\n",
481 *name, *(name+1), *(name+2), *(name+3),
482 *(name+4), *(name+5), *(name+6), *(name+7),
483 ndlp->nlp_DID);
484
485 clear_bit(NLP_IN_DEV_LOSS, &ndlp->nlp_flag);
486 return fcf_inuse;
487 }
488
489 /* Fabric nodes are done. */
490 if (ndlp->nlp_type & NLP_FABRIC) {
491 spin_lock_irqsave(&ndlp->lock, iflags);
492
493 /* The driver has to account for a race between any fabric
494 * node that's in recovery when dev_loss_tmo expires. When this
495 * happens, the driver has to allow node recovery.
496 */
497 switch (ndlp->nlp_DID) {
498 case Fabric_DID:
499 fc_vport = vport->fc_vport;
500 if (fc_vport) {
501 /* NPIV path. */
502 if (fc_vport->vport_state ==
503 FC_VPORT_INITIALIZING)
504 recovering = true;
505 } else {
506 /* Physical port path. */
507 if (test_bit(HBA_FLOGI_OUTSTANDING,
508 &phba->hba_flag))
509 recovering = true;
510 }
511 break;
512 case Fabric_Cntl_DID:
513 if (test_bit(NLP_REG_LOGIN_SEND, &ndlp->nlp_flag))
514 recovering = true;
515 break;
516 case FDMI_DID:
517 fallthrough;
518 case NameServer_DID:
519 if (ndlp->nlp_state >= NLP_STE_PLOGI_ISSUE &&
520 ndlp->nlp_state <= NLP_STE_REG_LOGIN_ISSUE)
521 recovering = true;
522 break;
523 default:
524 /* Ensure the nlp_DID at least has the correct prefix.
525 * The fabric domain controller's last three nibbles
526 * vary so we handle it in the default case.
527 */
528 if (ndlp->nlp_DID & Fabric_DID_MASK) {
529 if (ndlp->nlp_state >= NLP_STE_PLOGI_ISSUE &&
530 ndlp->nlp_state <= NLP_STE_REG_LOGIN_ISSUE)
531 recovering = true;
532 }
533 break;
534 }
535 spin_unlock_irqrestore(&ndlp->lock, iflags);
536
537 /* Mark an NLP_IN_RECOV_POST_DEV_LOSS flag to know if reversing
538 * the following lpfc_nlp_put is necessary after fabric node is
539 * recovered.
540 */
541 clear_bit(NLP_IN_DEV_LOSS, &ndlp->nlp_flag);
542 if (recovering) {
543 lpfc_printf_vlog(vport, KERN_INFO,
544 LOG_DISCOVERY | LOG_NODE,
545 "8436 Devloss timeout marked on "
546 "DID x%x refcnt %d ndlp %p "
547 "flag x%lx port_state = x%x\n",
548 ndlp->nlp_DID, kref_read(&ndlp->kref),
549 ndlp, ndlp->nlp_flag,
550 vport->port_state);
551 set_bit(NLP_IN_RECOV_POST_DEV_LOSS, &ndlp->save_flags);
552 return fcf_inuse;
553 } else if (ndlp->nlp_state == NLP_STE_UNMAPPED_NODE) {
554 /* Fabric node fully recovered before this dev_loss_tmo
555 * queue work is processed. Thus, ignore the
556 * dev_loss_tmo event.
557 */
558 lpfc_printf_vlog(vport, KERN_INFO,
559 LOG_DISCOVERY | LOG_NODE,
560 "8437 Devloss timeout ignored on "
561 "DID x%x refcnt %d ndlp %p "
562 "flag x%lx port_state = x%x\n",
563 ndlp->nlp_DID, kref_read(&ndlp->kref),
564 ndlp, ndlp->nlp_flag,
565 vport->port_state);
566 return fcf_inuse;
567 }
568
569 if (!test_and_set_bit(NLP_DROPPED, &ndlp->nlp_flag))
570 lpfc_nlp_put(ndlp);
571 return fcf_inuse;
572 }
573
574 if (ndlp->nlp_sid != NLP_NO_SID) {
575 warn_on = 1;
576 lpfc_sli_abort_iocb(vport, ndlp->nlp_sid, 0, LPFC_CTX_TGT);
577 }
578
579 if (warn_on) {
580 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
581 "0203 Devloss timeout on "
582 "WWPN %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x "
583 "NPort x%06x Data: x%lx x%x x%x refcnt %d\n",
584 *name, *(name+1), *(name+2), *(name+3),
585 *(name+4), *(name+5), *(name+6), *(name+7),
586 ndlp->nlp_DID, ndlp->nlp_flag,
587 ndlp->nlp_state, ndlp->nlp_rpi,
588 kref_read(&ndlp->kref));
589 } else {
590 lpfc_printf_vlog(vport, KERN_INFO, LOG_TRACE_EVENT,
591 "0204 Devloss timeout on "
592 "WWPN %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x "
593 "NPort x%06x Data: x%lx x%x x%x\n",
594 *name, *(name+1), *(name+2), *(name+3),
595 *(name+4), *(name+5), *(name+6), *(name+7),
596 ndlp->nlp_DID, ndlp->nlp_flag,
597 ndlp->nlp_state, ndlp->nlp_rpi);
598 }
599 clear_bit(NLP_IN_DEV_LOSS, &ndlp->nlp_flag);
600
601 /* If we are devloss, but we are in the process of rediscovering the
602 * ndlp, don't issue a NLP_EVT_DEVICE_RM event.
603 */
604 if (ndlp->nlp_state >= NLP_STE_PLOGI_ISSUE &&
605 ndlp->nlp_state <= NLP_STE_PRLI_ISSUE) {
606 return fcf_inuse;
607 }
608
609 if (!(ndlp->fc4_xpt_flags & NVME_XPT_REGD))
610 lpfc_disc_state_machine(vport, ndlp, NULL, NLP_EVT_DEVICE_RM);
611
612 return fcf_inuse;
613}
614
615static void lpfc_check_vmid_qfpa_issue(struct lpfc_hba *phba)
616{
617 struct lpfc_vport *vport;
618 struct lpfc_vport **vports;
619 int i;
620
621 vports = lpfc_create_vport_work_array(phba);
622 if (!vports)
623 return;
624
625 for (i = 0; i <= phba->max_vports; i++) {
626 if ((!vports[i]) && (i == 0))
627 vport = phba->pport;
628 else
629 vport = vports[i];
630 if (!vport)
631 break;
632
633 if (vport->vmid_flag & LPFC_VMID_ISSUE_QFPA) {
634 if (!lpfc_issue_els_qfpa(vport))
635 vport->vmid_flag &= ~LPFC_VMID_ISSUE_QFPA;
636 }
637 }
638 lpfc_destroy_vport_work_array(phba, vports);
639}
640
641/**
642 * lpfc_sli4_post_dev_loss_tmo_handler - SLI4 post devloss timeout handler
643 * @phba: Pointer to hba context object.
644 * @fcf_inuse: SLI4 FCF in-use state reported from devloss timeout handler.
645 * @nlp_did: remote node identifer with devloss timeout.
646 *
647 * This function is called from the worker thread after invoking devloss
648 * timeout handler and releasing the reference count for the ndlp with
649 * which the devloss timeout was handled for SLI4 host. For the devloss
650 * timeout of the last remote node which had been in use of FCF, when this
651 * routine is invoked, it shall be guaranteed that none of the remote are
652 * in-use of FCF. When devloss timeout to the last remote using the FCF,
653 * if the FIP engine is neither in FCF table scan process nor roundrobin
654 * failover process, the in-use FCF shall be unregistered. If the FIP
655 * engine is in FCF discovery process, the devloss timeout state shall
656 * be set for either the FCF table scan process or roundrobin failover
657 * process to unregister the in-use FCF.
658 **/
659static void
660lpfc_sli4_post_dev_loss_tmo_handler(struct lpfc_hba *phba, int fcf_inuse,
661 uint32_t nlp_did)
662{
663 /* If devloss timeout happened to a remote node when FCF had no
664 * longer been in-use, do nothing.
665 */
666 if (!fcf_inuse)
667 return;
668
669 if (test_bit(HBA_FIP_SUPPORT, &phba->hba_flag) &&
670 !lpfc_fcf_inuse(phba)) {
671 spin_lock_irq(&phba->hbalock);
672 if (phba->fcf.fcf_flag & FCF_DISCOVERY) {
673 if (test_and_set_bit(HBA_DEVLOSS_TMO,
674 &phba->hba_flag)) {
675 spin_unlock_irq(&phba->hbalock);
676 return;
677 }
678 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
679 "2847 Last remote node (x%x) using "
680 "FCF devloss tmo\n", nlp_did);
681 }
682 if (phba->fcf.fcf_flag & FCF_REDISC_PROG) {
683 spin_unlock_irq(&phba->hbalock);
684 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
685 "2868 Devloss tmo to FCF rediscovery "
686 "in progress\n");
687 return;
688 }
689 spin_unlock_irq(&phba->hbalock);
690 if (!test_bit(FCF_TS_INPROG, &phba->hba_flag) &&
691 !test_bit(FCF_RR_INPROG, &phba->hba_flag)) {
692 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
693 "2869 Devloss tmo to idle FIP engine, "
694 "unreg in-use FCF and rescan.\n");
695 /* Unregister in-use FCF and rescan */
696 lpfc_unregister_fcf_rescan(phba);
697 return;
698 }
699 if (test_bit(FCF_TS_INPROG, &phba->hba_flag))
700 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
701 "2870 FCF table scan in progress\n");
702 if (test_bit(FCF_RR_INPROG, &phba->hba_flag))
703 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
704 "2871 FLOGI roundrobin FCF failover "
705 "in progress\n");
706 }
707 lpfc_unregister_unused_fcf(phba);
708}
709
710/**
711 * lpfc_alloc_fast_evt - Allocates data structure for posting event
712 * @phba: Pointer to hba context object.
713 *
714 * This function is called from the functions which need to post
715 * events from interrupt context. This function allocates data
716 * structure required for posting event. It also keeps track of
717 * number of events pending and prevent event storm when there are
718 * too many events.
719 **/
720struct lpfc_fast_path_event *
721lpfc_alloc_fast_evt(struct lpfc_hba *phba) {
722 struct lpfc_fast_path_event *ret;
723
724 /* If there are lot of fast event do not exhaust memory due to this */
725 if (atomic_read(&phba->fast_event_count) > LPFC_MAX_EVT_COUNT)
726 return NULL;
727
728 ret = kzalloc_obj(struct lpfc_fast_path_event, GFP_ATOMIC);
729 if (ret) {
730 atomic_inc(&phba->fast_event_count);
731 INIT_LIST_HEAD(&ret->work_evt.evt_listp);
732 ret->work_evt.evt = LPFC_EVT_FASTPATH_MGMT_EVT;
733 }
734 return ret;
735}
736
737/**
738 * lpfc_free_fast_evt - Frees event data structure
739 * @phba: Pointer to hba context object.
740 * @evt: Event object which need to be freed.
741 *
742 * This function frees the data structure required for posting
743 * events.
744 **/
745void
746lpfc_free_fast_evt(struct lpfc_hba *phba,
747 struct lpfc_fast_path_event *evt) {
748
749 atomic_dec(&phba->fast_event_count);
750 kfree(evt);
751}
752
753/**
754 * lpfc_send_fastpath_evt - Posts events generated from fast path
755 * @phba: Pointer to hba context object.
756 * @evtp: Event data structure.
757 *
758 * This function is called from worker thread, when the interrupt
759 * context need to post an event. This function posts the event
760 * to fc transport netlink interface.
761 **/
762static void
763lpfc_send_fastpath_evt(struct lpfc_hba *phba,
764 struct lpfc_work_evt *evtp)
765{
766 unsigned long evt_category, evt_sub_category;
767 struct lpfc_fast_path_event *fast_evt_data;
768 char *evt_data;
769 uint32_t evt_data_size;
770 struct Scsi_Host *shost;
771
772 fast_evt_data = container_of(evtp, struct lpfc_fast_path_event,
773 work_evt);
774
775 evt_category = (unsigned long) fast_evt_data->un.fabric_evt.event_type;
776 evt_sub_category = (unsigned long) fast_evt_data->un.
777 fabric_evt.subcategory;
778 shost = lpfc_shost_from_vport(fast_evt_data->vport);
779 if (evt_category == FC_REG_FABRIC_EVENT) {
780 if (evt_sub_category == LPFC_EVENT_FCPRDCHKERR) {
781 evt_data = (char *) &fast_evt_data->un.read_check_error;
782 evt_data_size = sizeof(fast_evt_data->un.
783 read_check_error);
784 } else if ((evt_sub_category == LPFC_EVENT_FABRIC_BUSY) ||
785 (evt_sub_category == LPFC_EVENT_PORT_BUSY)) {
786 evt_data = (char *) &fast_evt_data->un.fabric_evt;
787 evt_data_size = sizeof(fast_evt_data->un.fabric_evt);
788 } else {
789 lpfc_free_fast_evt(phba, fast_evt_data);
790 return;
791 }
792 } else if (evt_category == FC_REG_SCSI_EVENT) {
793 switch (evt_sub_category) {
794 case LPFC_EVENT_QFULL:
795 case LPFC_EVENT_DEVBSY:
796 evt_data = (char *) &fast_evt_data->un.scsi_evt;
797 evt_data_size = sizeof(fast_evt_data->un.scsi_evt);
798 break;
799 case LPFC_EVENT_CHECK_COND:
800 evt_data = (char *) &fast_evt_data->un.check_cond_evt;
801 evt_data_size = sizeof(fast_evt_data->un.
802 check_cond_evt);
803 break;
804 case LPFC_EVENT_VARQUEDEPTH:
805 evt_data = (char *) &fast_evt_data->un.queue_depth_evt;
806 evt_data_size = sizeof(fast_evt_data->un.
807 queue_depth_evt);
808 break;
809 default:
810 lpfc_free_fast_evt(phba, fast_evt_data);
811 return;
812 }
813 } else {
814 lpfc_free_fast_evt(phba, fast_evt_data);
815 return;
816 }
817
818 if (phba->cfg_enable_fc4_type != LPFC_ENABLE_NVME)
819 fc_host_post_vendor_event(shost,
820 fc_get_event_number(),
821 evt_data_size,
822 evt_data,
823 LPFC_NL_VENDOR_ID);
824
825 lpfc_free_fast_evt(phba, fast_evt_data);
826 return;
827}
828
829static void
830lpfc_work_list_done(struct lpfc_hba *phba)
831{
832 struct lpfc_work_evt *evtp = NULL;
833 struct lpfc_nodelist *ndlp;
834 int free_evt;
835 int fcf_inuse;
836 uint32_t nlp_did;
837 bool hba_pci_err;
838
839 spin_lock_irq(&phba->hbalock);
840 while (!list_empty(&phba->work_list)) {
841 list_remove_head((&phba->work_list), evtp, typeof(*evtp),
842 evt_listp);
843 spin_unlock_irq(&phba->hbalock);
844 hba_pci_err = test_bit(HBA_PCI_ERR, &phba->bit_flags);
845 free_evt = 1;
846 switch (evtp->evt) {
847 case LPFC_EVT_ELS_RETRY:
848 ndlp = (struct lpfc_nodelist *) (evtp->evt_arg1);
849 if (!hba_pci_err) {
850 lpfc_els_retry_delay_handler(ndlp);
851 free_evt = 0; /* evt is part of ndlp */
852 }
853 /* decrement the node reference count held
854 * for this queued work
855 */
856 lpfc_nlp_put(ndlp);
857 break;
858 case LPFC_EVT_DEV_LOSS:
859 ndlp = (struct lpfc_nodelist *)(evtp->evt_arg1);
860 fcf_inuse = lpfc_dev_loss_tmo_handler(ndlp);
861 free_evt = 0;
862 /* decrement the node reference count held for
863 * this queued work
864 */
865 nlp_did = ndlp->nlp_DID;
866 lpfc_nlp_put(ndlp);
867 if (phba->sli_rev == LPFC_SLI_REV4)
868 lpfc_sli4_post_dev_loss_tmo_handler(phba,
869 fcf_inuse,
870 nlp_did);
871 break;
872 case LPFC_EVT_RECOVER_PORT:
873 ndlp = (struct lpfc_nodelist *)(evtp->evt_arg1);
874 if (!hba_pci_err) {
875 lpfc_sli_abts_recover_port(ndlp->vport, ndlp);
876 free_evt = 0;
877 }
878 /* decrement the node reference count held for
879 * this queued work
880 */
881 lpfc_nlp_put(ndlp);
882 break;
883 case LPFC_EVT_ONLINE:
884 if (phba->link_state < LPFC_LINK_DOWN)
885 *(int *) (evtp->evt_arg1) = lpfc_online(phba);
886 else
887 *(int *) (evtp->evt_arg1) = 0;
888 complete((struct completion *)(evtp->evt_arg2));
889 break;
890 case LPFC_EVT_OFFLINE_PREP:
891 if (phba->link_state >= LPFC_LINK_DOWN)
892 lpfc_offline_prep(phba, LPFC_MBX_WAIT);
893 *(int *)(evtp->evt_arg1) = 0;
894 complete((struct completion *)(evtp->evt_arg2));
895 break;
896 case LPFC_EVT_OFFLINE:
897 lpfc_offline(phba);
898 lpfc_sli_brdrestart(phba);
899 *(int *)(evtp->evt_arg1) =
900 lpfc_sli_brdready(phba, HS_FFRDY | HS_MBRDY);
901 lpfc_unblock_mgmt_io(phba);
902 complete((struct completion *)(evtp->evt_arg2));
903 break;
904 case LPFC_EVT_WARM_START:
905 lpfc_offline(phba);
906 lpfc_reset_barrier(phba);
907 lpfc_sli_brdreset(phba);
908 lpfc_hba_down_post(phba);
909 *(int *)(evtp->evt_arg1) =
910 lpfc_sli_brdready(phba, HS_MBRDY);
911 lpfc_unblock_mgmt_io(phba);
912 complete((struct completion *)(evtp->evt_arg2));
913 break;
914 case LPFC_EVT_KILL:
915 lpfc_offline(phba);
916 *(int *)(evtp->evt_arg1)
917 = (phba->pport->stopped)
918 ? 0 : lpfc_sli_brdkill(phba);
919 lpfc_unblock_mgmt_io(phba);
920 complete((struct completion *)(evtp->evt_arg2));
921 break;
922 case LPFC_EVT_FASTPATH_MGMT_EVT:
923 lpfc_send_fastpath_evt(phba, evtp);
924 free_evt = 0;
925 break;
926 case LPFC_EVT_RESET_HBA:
927 if (!test_bit(FC_UNLOADING, &phba->pport->load_flag))
928 lpfc_reset_hba(phba);
929 break;
930 }
931 if (free_evt)
932 kfree(evtp);
933 spin_lock_irq(&phba->hbalock);
934 }
935 spin_unlock_irq(&phba->hbalock);
936
937}
938
939static void
940lpfc_work_done(struct lpfc_hba *phba)
941{
942 struct lpfc_sli_ring *pring;
943 uint32_t ha_copy, status, control, work_port_events;
944 struct lpfc_vport **vports;
945 struct lpfc_vport *vport;
946 int i;
947 bool hba_pci_err;
948
949 hba_pci_err = test_bit(HBA_PCI_ERR, &phba->bit_flags);
950 spin_lock_irq(&phba->hbalock);
951 ha_copy = phba->work_ha;
952 phba->work_ha = 0;
953 spin_unlock_irq(&phba->hbalock);
954 if (hba_pci_err)
955 ha_copy = 0;
956
957 /* First, try to post the next mailbox command to SLI4 device */
958 if (phba->pci_dev_grp == LPFC_PCI_DEV_OC && !hba_pci_err)
959 lpfc_sli4_post_async_mbox(phba);
960
961 if (ha_copy & HA_ERATT) {
962 /* Handle the error attention event */
963 lpfc_handle_eratt(phba);
964
965 if (phba->fw_dump_cmpl) {
966 complete(phba->fw_dump_cmpl);
967 phba->fw_dump_cmpl = NULL;
968 }
969 }
970
971 if (ha_copy & HA_MBATT)
972 lpfc_sli_handle_mb_event(phba);
973
974 if (ha_copy & HA_LATT)
975 lpfc_handle_latt(phba);
976
977 /* Handle VMID Events */
978 if (lpfc_is_vmid_enabled(phba) && !hba_pci_err) {
979 if (phba->pport->work_port_events &
980 WORKER_CHECK_VMID_ISSUE_QFPA) {
981 lpfc_check_vmid_qfpa_issue(phba);
982 phba->pport->work_port_events &=
983 ~WORKER_CHECK_VMID_ISSUE_QFPA;
984 }
985 if (phba->pport->work_port_events &
986 WORKER_CHECK_INACTIVE_VMID) {
987 lpfc_check_inactive_vmid(phba);
988 phba->pport->work_port_events &=
989 ~WORKER_CHECK_INACTIVE_VMID;
990 }
991 }
992
993 /* Process SLI4 events */
994 if (phba->pci_dev_grp == LPFC_PCI_DEV_OC) {
995 if (test_bit(HBA_RRQ_ACTIVE, &phba->hba_flag))
996 lpfc_handle_rrq_active(phba);
997 if (test_bit(ELS_XRI_ABORT_EVENT, &phba->hba_flag))
998 lpfc_sli4_els_xri_abort_event_proc(phba);
999 if (test_bit(ASYNC_EVENT, &phba->hba_flag))
1000 lpfc_sli4_async_event_proc(phba);
1001 if (test_and_clear_bit(HBA_POST_RECEIVE_BUFFER,
1002 &phba->hba_flag))
1003 lpfc_sli_hbqbuf_add_hbqs(phba, LPFC_ELS_HBQ);
1004 if (phba->fcf.fcf_flag & FCF_REDISC_EVT)
1005 lpfc_sli4_fcf_redisc_event_proc(phba);
1006 }
1007
1008 vports = lpfc_create_vport_work_array(phba);
1009 if (vports != NULL)
1010 for (i = 0; i <= phba->max_vports; i++) {
1011 /*
1012 * We could have no vports in array if unloading, so if
1013 * this happens then just use the pport
1014 */
1015 if (vports[i] == NULL && i == 0)
1016 vport = phba->pport;
1017 else
1018 vport = vports[i];
1019 if (vport == NULL)
1020 break;
1021 spin_lock_irq(&vport->work_port_lock);
1022 work_port_events = vport->work_port_events;
1023 vport->work_port_events &= ~work_port_events;
1024 spin_unlock_irq(&vport->work_port_lock);
1025 if (hba_pci_err)
1026 continue;
1027 if (work_port_events & WORKER_DISC_TMO)
1028 lpfc_disc_timeout_handler(vport);
1029 if (work_port_events & WORKER_ELS_TMO)
1030 lpfc_els_timeout_handler(vport);
1031 if (work_port_events & WORKER_HB_TMO)
1032 lpfc_hb_timeout_handler(phba);
1033 if (work_port_events & WORKER_MBOX_TMO)
1034 lpfc_mbox_timeout_handler(phba);
1035 if (work_port_events & WORKER_FABRIC_BLOCK_TMO)
1036 lpfc_unblock_fabric_iocbs(phba);
1037 if (work_port_events & WORKER_RAMP_DOWN_QUEUE)
1038 lpfc_ramp_down_queue_handler(phba);
1039 if (work_port_events & WORKER_DELAYED_DISC_TMO)
1040 lpfc_delayed_disc_timeout_handler(vport);
1041 }
1042 lpfc_destroy_vport_work_array(phba, vports);
1043
1044 pring = lpfc_phba_elsring(phba);
1045 status = (ha_copy & (HA_RXMASK << (4*LPFC_ELS_RING)));
1046 status >>= (4*LPFC_ELS_RING);
1047 if (pring && (status & HA_RXMASK ||
1048 pring->flag & LPFC_DEFERRED_RING_EVENT ||
1049 test_bit(HBA_SP_QUEUE_EVT, &phba->hba_flag))) {
1050 if (pring->flag & LPFC_STOP_IOCB_EVENT) {
1051 pring->flag |= LPFC_DEFERRED_RING_EVENT;
1052 /* Preserve legacy behavior. */
1053 if (!test_bit(HBA_SP_QUEUE_EVT, &phba->hba_flag))
1054 set_bit(LPFC_DATA_READY, &phba->data_flags);
1055 } else {
1056 /* Driver could have abort request completed in queue
1057 * when link goes down. Allow for this transition.
1058 */
1059 if (phba->link_state >= LPFC_LINK_DOWN ||
1060 phba->link_flag & LS_MDS_LOOPBACK) {
1061 pring->flag &= ~LPFC_DEFERRED_RING_EVENT;
1062 lpfc_sli_handle_slow_ring_event(phba, pring,
1063 (status &
1064 HA_RXMASK));
1065 }
1066 }
1067 if (phba->sli_rev == LPFC_SLI_REV4)
1068 lpfc_drain_txq(phba);
1069 /*
1070 * Turn on Ring interrupts
1071 */
1072 if (phba->sli_rev <= LPFC_SLI_REV3) {
1073 spin_lock_irq(&phba->hbalock);
1074 control = readl(phba->HCregaddr);
1075 if (!(control & (HC_R0INT_ENA << LPFC_ELS_RING))) {
1076 lpfc_debugfs_slow_ring_trc(phba,
1077 "WRK Enable ring: cntl:x%x hacopy:x%x",
1078 control, ha_copy, 0);
1079
1080 control |= (HC_R0INT_ENA << LPFC_ELS_RING);
1081 writel(control, phba->HCregaddr);
1082 readl(phba->HCregaddr); /* flush */
1083 } else {
1084 lpfc_debugfs_slow_ring_trc(phba,
1085 "WRK Ring ok: cntl:x%x hacopy:x%x",
1086 control, ha_copy, 0);
1087 }
1088 spin_unlock_irq(&phba->hbalock);
1089 }
1090 }
1091 lpfc_work_list_done(phba);
1092}
1093
1094int
1095lpfc_do_work(void *p)
1096{
1097 struct lpfc_hba *phba = p;
1098 int rc;
1099
1100 set_user_nice(current, MIN_NICE);
1101 current->flags |= PF_NOFREEZE;
1102 phba->data_flags = 0;
1103
1104 while (!kthread_should_stop()) {
1105 /* wait and check worker queue activities */
1106 rc = wait_event_interruptible(phba->work_waitq,
1107 (test_and_clear_bit(LPFC_DATA_READY,
1108 &phba->data_flags)
1109 || kthread_should_stop()));
1110 /* Signal wakeup shall terminate the worker thread */
1111 if (rc) {
1112 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
1113 "0433 Wakeup on signal: rc=x%x\n", rc);
1114 break;
1115 }
1116
1117 /* Attend pending lpfc data processing */
1118 lpfc_work_done(phba);
1119 }
1120 phba->worker_thread = NULL;
1121 lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
1122 "0432 Worker thread stopped.\n");
1123 return 0;
1124}
1125
1126/*
1127 * This is only called to handle FC worker events. Since this a rare
1128 * occurrence, we allocate a struct lpfc_work_evt structure here instead of
1129 * embedding it in the IOCB.
1130 */
1131int
1132lpfc_workq_post_event(struct lpfc_hba *phba, void *arg1, void *arg2,
1133 uint32_t evt)
1134{
1135 struct lpfc_work_evt *evtp;
1136 unsigned long flags;
1137
1138 /*
1139 * All Mailbox completions and LPFC_ELS_RING rcv ring IOCB events will
1140 * be queued to worker thread for processing
1141 */
1142 evtp = kmalloc_obj(struct lpfc_work_evt, GFP_ATOMIC);
1143 if (!evtp)
1144 return 0;
1145
1146 evtp->evt_arg1 = arg1;
1147 evtp->evt_arg2 = arg2;
1148 evtp->evt = evt;
1149
1150 spin_lock_irqsave(&phba->hbalock, flags);
1151 list_add_tail(&evtp->evt_listp, &phba->work_list);
1152 spin_unlock_irqrestore(&phba->hbalock, flags);
1153
1154 lpfc_worker_wake_up(phba);
1155
1156 return 1;
1157}
1158
1159void
1160lpfc_cleanup_rpis(struct lpfc_vport *vport, int remove)
1161{
1162 struct lpfc_hba *phba = vport->phba;
1163 struct lpfc_nodelist *ndlp, *next_ndlp;
1164
1165 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) {
1166 if ((phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN) ||
1167 ((vport->port_type == LPFC_NPIV_PORT) &&
1168 ((ndlp->nlp_DID == NameServer_DID) ||
1169 (ndlp->nlp_DID == FDMI_DID) ||
1170 (ndlp->nlp_DID == Fabric_Cntl_DID))))
1171 lpfc_unreg_rpi(vport, ndlp);
1172
1173 /* Leave Fabric nodes alone on link down */
1174 if ((phba->sli_rev < LPFC_SLI_REV4) &&
1175 (!remove && ndlp->nlp_type & NLP_FABRIC))
1176 continue;
1177
1178 /* Notify transport of connectivity loss to trigger cleanup. */
1179 if (phba->nvmet_support &&
1180 ndlp->nlp_state == NLP_STE_UNMAPPED_NODE)
1181 lpfc_nvmet_invalidate_host(phba, ndlp);
1182
1183 lpfc_disc_state_machine(vport, ndlp, NULL,
1184 remove
1185 ? NLP_EVT_DEVICE_RM
1186 : NLP_EVT_DEVICE_RECOVERY);
1187 }
1188 if (phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN) {
1189 if (phba->sli_rev == LPFC_SLI_REV4)
1190 lpfc_sli4_unreg_all_rpis(vport);
1191 lpfc_mbx_unreg_vpi(vport);
1192 set_bit(FC_VPORT_NEEDS_REG_VPI, &vport->fc_flag);
1193 }
1194}
1195
1196void
1197lpfc_port_link_failure(struct lpfc_vport *vport)
1198{
1199 lpfc_vport_set_state(vport, FC_VPORT_LINKDOWN);
1200
1201 /* Cleanup any outstanding received buffers */
1202 lpfc_cleanup_rcv_buffers(vport);
1203
1204 /* Cleanup any outstanding RSCN activity */
1205 lpfc_els_flush_rscn(vport);
1206
1207 /* Cleanup any outstanding ELS commands */
1208 lpfc_els_flush_cmd(vport);
1209
1210 lpfc_cleanup_rpis(vport, 0);
1211
1212 /* Turn off discovery timer if its running */
1213 lpfc_can_disctmo(vport);
1214}
1215
1216void
1217lpfc_linkdown_port(struct lpfc_vport *vport)
1218{
1219 struct lpfc_hba *phba = vport->phba;
1220 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1221
1222 if (vport->cfg_enable_fc4_type != LPFC_ENABLE_NVME)
1223 fc_host_post_event(shost, fc_get_event_number(),
1224 FCH_EVT_LINKDOWN, 0);
1225
1226 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
1227 "Link Down: state:x%x rtry:x%x flg:x%x",
1228 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
1229
1230 lpfc_port_link_failure(vport);
1231
1232 /* Stop delayed Nport discovery */
1233 clear_bit(FC_DISC_DELAYED, &vport->fc_flag);
1234 timer_delete_sync(&vport->delayed_disc_tmo);
1235
1236 if (phba->sli_rev == LPFC_SLI_REV4 &&
1237 vport->port_type == LPFC_PHYSICAL_PORT &&
1238 phba->sli4_hba.fawwpn_flag & LPFC_FAWWPN_CONFIG) {
1239 /* Assume success on link up */
1240 phba->sli4_hba.fawwpn_flag |= LPFC_FAWWPN_FABRIC;
1241 }
1242}
1243
1244int
1245lpfc_linkdown(struct lpfc_hba *phba)
1246{
1247 struct lpfc_vport *vport = phba->pport;
1248 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1249 struct lpfc_vport **vports;
1250 LPFC_MBOXQ_t *mb;
1251 int i;
1252 int offline;
1253
1254 if (phba->link_state == LPFC_LINK_DOWN)
1255 return 0;
1256
1257 /* Block all SCSI stack I/Os */
1258 lpfc_scsi_dev_block(phba);
1259 offline = pci_channel_offline(phba->pcidev);
1260
1261 /* Decrement the held ndlp if there is a deferred flogi acc */
1262 if (phba->defer_flogi_acc.flag) {
1263 if (phba->defer_flogi_acc.ndlp) {
1264 lpfc_nlp_put(phba->defer_flogi_acc.ndlp);
1265 phba->defer_flogi_acc.ndlp = NULL;
1266 }
1267 }
1268 phba->defer_flogi_acc.flag = false;
1269
1270 /* reinitialize initial HBA flag */
1271 clear_bit(HBA_FLOGI_ISSUED, &phba->hba_flag);
1272 clear_bit(HBA_RHBA_CMPL, &phba->hba_flag);
1273
1274 /* Clear external loopback plug detected flag */
1275 phba->link_flag &= ~LS_EXTERNAL_LOOPBACK;
1276
1277 spin_lock_irq(&phba->hbalock);
1278 phba->fcf.fcf_flag &= ~(FCF_AVAILABLE | FCF_SCAN_DONE);
1279 spin_unlock_irq(&phba->hbalock);
1280 if (phba->link_state > LPFC_LINK_DOWN) {
1281 phba->link_state = LPFC_LINK_DOWN;
1282 if (phba->sli4_hba.conf_trunk) {
1283 phba->trunk_link.link0.state = 0;
1284 phba->trunk_link.link1.state = 0;
1285 phba->trunk_link.link2.state = 0;
1286 phba->trunk_link.link3.state = 0;
1287 phba->trunk_link.phy_lnk_speed =
1288 LPFC_LINK_SPEED_UNKNOWN;
1289 phba->sli4_hba.link_state.logical_speed =
1290 LPFC_LINK_SPEED_UNKNOWN;
1291 }
1292 clear_bit(FC_LBIT, &phba->pport->fc_flag);
1293 }
1294 vports = lpfc_create_vport_work_array(phba);
1295 if (vports != NULL) {
1296 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
1297 /* Issue a LINK DOWN event to all nodes */
1298 lpfc_linkdown_port(vports[i]);
1299
1300 vports[i]->fc_myDID = 0;
1301
1302 if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) ||
1303 (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME)) {
1304 if (phba->nvmet_support)
1305 lpfc_nvmet_update_targetport(phba);
1306 else
1307 lpfc_nvme_update_localport(vports[i]);
1308 }
1309 }
1310 }
1311 lpfc_destroy_vport_work_array(phba, vports);
1312
1313 /* Clean up any SLI3 firmware default rpi's */
1314 if (phba->sli_rev > LPFC_SLI_REV3 || offline)
1315 goto skip_unreg_did;
1316
1317 mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1318 if (mb) {
1319 lpfc_unreg_did(phba, 0xffff, LPFC_UNREG_ALL_DFLT_RPIS, mb);
1320 mb->vport = vport;
1321 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1322 if (lpfc_sli_issue_mbox(phba, mb, MBX_NOWAIT)
1323 == MBX_NOT_FINISHED) {
1324 mempool_free(mb, phba->mbox_mem_pool);
1325 }
1326 }
1327
1328 skip_unreg_did:
1329 /* Setup myDID for link up if we are in pt2pt mode */
1330 if (test_bit(FC_PT2PT, &phba->pport->fc_flag)) {
1331 mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1332 if (mb) {
1333 lpfc_config_link(phba, mb);
1334 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1335 mb->vport = vport;
1336 if (lpfc_sli_issue_mbox(phba, mb, MBX_NOWAIT)
1337 == MBX_NOT_FINISHED) {
1338 mempool_free(mb, phba->mbox_mem_pool);
1339 }
1340 }
1341 clear_bit(FC_PT2PT, &phba->pport->fc_flag);
1342 clear_bit(FC_PT2PT_PLOGI, &phba->pport->fc_flag);
1343 spin_lock_irq(shost->host_lock);
1344 phba->pport->rcv_flogi_cnt = 0;
1345 spin_unlock_irq(shost->host_lock);
1346 }
1347 return 0;
1348}
1349
1350static void
1351lpfc_linkup_cleanup_nodes(struct lpfc_vport *vport)
1352{
1353 struct lpfc_nodelist *ndlp;
1354
1355 list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
1356 ndlp->nlp_fc4_type &= ~(NLP_FC4_FCP | NLP_FC4_NVME);
1357
1358 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
1359 continue;
1360 if (ndlp->nlp_type & NLP_FABRIC) {
1361 /* On Linkup its safe to clean up the ndlp
1362 * from Fabric connections.
1363 */
1364 if (ndlp->nlp_DID != Fabric_DID)
1365 lpfc_unreg_rpi(vport, ndlp);
1366 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1367 } else if (!test_bit(NLP_NPR_ADISC, &ndlp->nlp_flag)) {
1368 /* Fail outstanding IO now since device is
1369 * marked for PLOGI.
1370 */
1371 lpfc_unreg_rpi(vport, ndlp);
1372 }
1373 }
1374}
1375
1376static void
1377lpfc_linkup_port(struct lpfc_vport *vport)
1378{
1379 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1380 struct lpfc_hba *phba = vport->phba;
1381
1382 if (test_bit(FC_UNLOADING, &vport->load_flag))
1383 return;
1384
1385 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
1386 "Link Up: top:x%x speed:x%x flg:x%x",
1387 phba->fc_topology, phba->fc_linkspeed, phba->link_flag);
1388
1389 /* If NPIV is not enabled, only bring the physical port up */
1390 if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
1391 (vport != phba->pport))
1392 return;
1393
1394 if (phba->defer_flogi_acc.flag) {
1395 clear_bit(FC_ABORT_DISCOVERY, &vport->fc_flag);
1396 clear_bit(FC_RSCN_MODE, &vport->fc_flag);
1397 clear_bit(FC_NLP_MORE, &vport->fc_flag);
1398 clear_bit(FC_RSCN_DISCOVERY, &vport->fc_flag);
1399 } else {
1400 clear_bit(FC_PT2PT, &vport->fc_flag);
1401 clear_bit(FC_PT2PT_PLOGI, &vport->fc_flag);
1402 clear_bit(FC_ABORT_DISCOVERY, &vport->fc_flag);
1403 clear_bit(FC_RSCN_MODE, &vport->fc_flag);
1404 clear_bit(FC_NLP_MORE, &vport->fc_flag);
1405 clear_bit(FC_RSCN_DISCOVERY, &vport->fc_flag);
1406 }
1407 set_bit(FC_NDISC_ACTIVE, &vport->fc_flag);
1408
1409 spin_lock_irq(shost->host_lock);
1410 vport->fc_ns_retry = 0;
1411 spin_unlock_irq(shost->host_lock);
1412 lpfc_setup_fdmi_mask(vport);
1413
1414 lpfc_linkup_cleanup_nodes(vport);
1415}
1416
1417static int
1418lpfc_linkup(struct lpfc_hba *phba)
1419{
1420 struct lpfc_vport **vports;
1421 int i;
1422 struct Scsi_Host *shost = lpfc_shost_from_vport(phba->pport);
1423
1424 phba->link_state = LPFC_LINK_UP;
1425
1426 /* Unblock fabric iocbs if they are blocked */
1427 clear_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags);
1428 timer_delete_sync(&phba->fabric_block_timer);
1429
1430 vports = lpfc_create_vport_work_array(phba);
1431 if (vports != NULL)
1432 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++)
1433 lpfc_linkup_port(vports[i]);
1434 lpfc_destroy_vport_work_array(phba, vports);
1435
1436 /* Clear the pport flogi counter in case the link down was
1437 * absorbed without an ACQE. No lock here - in worker thread
1438 * and discovery is synchronized.
1439 */
1440 spin_lock_irq(shost->host_lock);
1441 phba->pport->rcv_flogi_cnt = 0;
1442 spin_unlock_irq(shost->host_lock);
1443
1444 return 0;
1445}
1446
1447/*
1448 * This routine handles processing a CLEAR_LA mailbox
1449 * command upon completion. It is setup in the LPFC_MBOXQ
1450 * as the completion routine when the command is
1451 * handed off to the SLI layer. SLI3 only.
1452 */
1453static void
1454lpfc_mbx_cmpl_clear_la(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1455{
1456 struct lpfc_vport *vport = pmb->vport;
1457 struct lpfc_sli *psli = &phba->sli;
1458 MAILBOX_t *mb = &pmb->u.mb;
1459 uint32_t control;
1460
1461 /* Since we don't do discovery right now, turn these off here */
1462 psli->sli3_ring[LPFC_EXTRA_RING].flag &= ~LPFC_STOP_IOCB_EVENT;
1463 psli->sli3_ring[LPFC_FCP_RING].flag &= ~LPFC_STOP_IOCB_EVENT;
1464
1465 /* Check for error */
1466 if ((mb->mbxStatus) && (mb->mbxStatus != 0x1601)) {
1467 /* CLEAR_LA mbox error <mbxStatus> state <hba_state> */
1468 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
1469 "0320 CLEAR_LA mbxStatus error x%x hba "
1470 "state x%x\n",
1471 mb->mbxStatus, vport->port_state);
1472 phba->link_state = LPFC_HBA_ERROR;
1473 goto out;
1474 }
1475
1476 if (vport->port_type == LPFC_PHYSICAL_PORT)
1477 phba->link_state = LPFC_HBA_READY;
1478
1479 spin_lock_irq(&phba->hbalock);
1480 psli->sli_flag |= LPFC_PROCESS_LA;
1481 control = readl(phba->HCregaddr);
1482 control |= HC_LAINT_ENA;
1483 writel(control, phba->HCregaddr);
1484 readl(phba->HCregaddr); /* flush */
1485 spin_unlock_irq(&phba->hbalock);
1486 mempool_free(pmb, phba->mbox_mem_pool);
1487 return;
1488
1489out:
1490 /* Device Discovery completes */
1491 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
1492 "0225 Device Discovery completes\n");
1493 mempool_free(pmb, phba->mbox_mem_pool);
1494
1495 clear_bit(FC_ABORT_DISCOVERY, &vport->fc_flag);
1496
1497 lpfc_can_disctmo(vport);
1498
1499 /* turn on Link Attention interrupts */
1500
1501 spin_lock_irq(&phba->hbalock);
1502 psli->sli_flag |= LPFC_PROCESS_LA;
1503 control = readl(phba->HCregaddr);
1504 control |= HC_LAINT_ENA;
1505 writel(control, phba->HCregaddr);
1506 readl(phba->HCregaddr); /* flush */
1507 spin_unlock_irq(&phba->hbalock);
1508
1509 return;
1510}
1511
1512void
1513lpfc_mbx_cmpl_local_config_link(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1514{
1515 struct lpfc_vport *vport = pmb->vport;
1516 LPFC_MBOXQ_t *sparam_mb;
1517 u16 status = pmb->u.mb.mbxStatus;
1518 int rc;
1519
1520 mempool_free(pmb, phba->mbox_mem_pool);
1521
1522 if (status)
1523 goto out;
1524
1525 /* don't perform discovery for SLI4 loopback diagnostic test */
1526 if ((phba->sli_rev == LPFC_SLI_REV4) &&
1527 !test_bit(HBA_FCOE_MODE, &phba->hba_flag) &&
1528 (phba->link_flag & LS_LOOPBACK_MODE))
1529 return;
1530
1531 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP &&
1532 test_bit(FC_PUBLIC_LOOP, &vport->fc_flag) &&
1533 !test_bit(FC_LBIT, &vport->fc_flag)) {
1534 /* Need to wait for FAN - use discovery timer
1535 * for timeout. port_state is identically
1536 * LPFC_LOCAL_CFG_LINK while waiting for FAN
1537 */
1538 lpfc_set_disctmo(vport);
1539 return;
1540 }
1541
1542 /* Start discovery by sending a FLOGI. port_state is identically
1543 * LPFC_FLOGI while waiting for FLOGI cmpl.
1544 */
1545 if (vport->port_state != LPFC_FLOGI) {
1546 /* Issue MBX_READ_SPARAM to update CSPs before FLOGI if
1547 * bb-credit recovery is in place.
1548 */
1549 if (phba->bbcredit_support && phba->cfg_enable_bbcr &&
1550 !(phba->link_flag & LS_LOOPBACK_MODE)) {
1551 sparam_mb = mempool_alloc(phba->mbox_mem_pool,
1552 GFP_KERNEL);
1553 if (!sparam_mb)
1554 goto sparam_out;
1555
1556 rc = lpfc_read_sparam(phba, sparam_mb, 0);
1557 if (rc) {
1558 mempool_free(sparam_mb, phba->mbox_mem_pool);
1559 goto sparam_out;
1560 }
1561 sparam_mb->vport = vport;
1562 sparam_mb->mbox_cmpl = lpfc_mbx_cmpl_read_sparam;
1563 rc = lpfc_sli_issue_mbox(phba, sparam_mb, MBX_NOWAIT);
1564 if (rc == MBX_NOT_FINISHED) {
1565 lpfc_mbox_rsrc_cleanup(phba, sparam_mb,
1566 MBOX_THD_UNLOCKED);
1567 goto sparam_out;
1568 }
1569
1570 set_bit(HBA_DEFER_FLOGI, &phba->hba_flag);
1571 } else {
1572 lpfc_initial_flogi(vport);
1573 }
1574 } else {
1575 if (test_bit(FC_PT2PT, &vport->fc_flag))
1576 lpfc_disc_start(vport);
1577 }
1578 return;
1579
1580out:
1581 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
1582 "0306 CONFIG_LINK mbxStatus error x%x HBA state x%x\n",
1583 status, vport->port_state);
1584
1585sparam_out:
1586 lpfc_linkdown(phba);
1587
1588 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
1589 "0200 CONFIG_LINK bad hba state x%x\n",
1590 vport->port_state);
1591
1592 lpfc_issue_clear_la(phba, vport);
1593 return;
1594}
1595
1596/**
1597 * lpfc_sli4_clear_fcf_rr_bmask
1598 * @phba: pointer to the struct lpfc_hba for this port.
1599 * This fucnction resets the round robin bit mask and clears the
1600 * fcf priority list. The list deletions are done while holding the
1601 * hbalock. The ON_LIST flag and the FLOGI_FAILED flags are cleared
1602 * from the lpfc_fcf_pri record.
1603 **/
1604void
1605lpfc_sli4_clear_fcf_rr_bmask(struct lpfc_hba *phba)
1606{
1607 struct lpfc_fcf_pri *fcf_pri;
1608 struct lpfc_fcf_pri *next_fcf_pri;
1609 memset(phba->fcf.fcf_rr_bmask, 0, sizeof(*phba->fcf.fcf_rr_bmask));
1610 spin_lock_irq(&phba->hbalock);
1611 list_for_each_entry_safe(fcf_pri, next_fcf_pri,
1612 &phba->fcf.fcf_pri_list, list) {
1613 list_del_init(&fcf_pri->list);
1614 fcf_pri->fcf_rec.flag = 0;
1615 }
1616 spin_unlock_irq(&phba->hbalock);
1617}
1618static void
1619lpfc_mbx_cmpl_reg_fcfi(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
1620{
1621 struct lpfc_vport *vport = mboxq->vport;
1622
1623 if (mboxq->u.mb.mbxStatus) {
1624 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
1625 "2017 REG_FCFI mbxStatus error x%x "
1626 "HBA state x%x\n", mboxq->u.mb.mbxStatus,
1627 vport->port_state);
1628 goto fail_out;
1629 }
1630
1631 /* Start FCoE discovery by sending a FLOGI. */
1632 phba->fcf.fcfi = bf_get(lpfc_reg_fcfi_fcfi, &mboxq->u.mqe.un.reg_fcfi);
1633 /* Set the FCFI registered flag */
1634 spin_lock_irq(&phba->hbalock);
1635 phba->fcf.fcf_flag |= FCF_REGISTERED;
1636 spin_unlock_irq(&phba->hbalock);
1637
1638 /* If there is a pending FCoE event, restart FCF table scan. */
1639 if (!test_bit(FCF_RR_INPROG, &phba->hba_flag) &&
1640 lpfc_check_pending_fcoe_event(phba, LPFC_UNREG_FCF))
1641 goto fail_out;
1642
1643 /* Mark successful completion of FCF table scan */
1644 spin_lock_irq(&phba->hbalock);
1645 phba->fcf.fcf_flag |= (FCF_SCAN_DONE | FCF_IN_USE);
1646 spin_unlock_irq(&phba->hbalock);
1647 clear_bit(FCF_TS_INPROG, &phba->hba_flag);
1648 if (vport->port_state != LPFC_FLOGI) {
1649 set_bit(FCF_RR_INPROG, &phba->hba_flag);
1650 lpfc_issue_init_vfi(vport);
1651 }
1652 goto out;
1653
1654fail_out:
1655 clear_bit(FCF_RR_INPROG, &phba->hba_flag);
1656out:
1657 mempool_free(mboxq, phba->mbox_mem_pool);
1658}
1659
1660/**
1661 * lpfc_fab_name_match - Check if the fcf fabric name match.
1662 * @fab_name: pointer to fabric name.
1663 * @new_fcf_record: pointer to fcf record.
1664 *
1665 * This routine compare the fcf record's fabric name with provided
1666 * fabric name. If the fabric name are identical this function
1667 * returns 1 else return 0.
1668 **/
1669static uint32_t
1670lpfc_fab_name_match(uint8_t *fab_name, struct fcf_record *new_fcf_record)
1671{
1672 if (fab_name[0] != bf_get(lpfc_fcf_record_fab_name_0, new_fcf_record))
1673 return 0;
1674 if (fab_name[1] != bf_get(lpfc_fcf_record_fab_name_1, new_fcf_record))
1675 return 0;
1676 if (fab_name[2] != bf_get(lpfc_fcf_record_fab_name_2, new_fcf_record))
1677 return 0;
1678 if (fab_name[3] != bf_get(lpfc_fcf_record_fab_name_3, new_fcf_record))
1679 return 0;
1680 if (fab_name[4] != bf_get(lpfc_fcf_record_fab_name_4, new_fcf_record))
1681 return 0;
1682 if (fab_name[5] != bf_get(lpfc_fcf_record_fab_name_5, new_fcf_record))
1683 return 0;
1684 if (fab_name[6] != bf_get(lpfc_fcf_record_fab_name_6, new_fcf_record))
1685 return 0;
1686 if (fab_name[7] != bf_get(lpfc_fcf_record_fab_name_7, new_fcf_record))
1687 return 0;
1688 return 1;
1689}
1690
1691/**
1692 * lpfc_sw_name_match - Check if the fcf switch name match.
1693 * @sw_name: pointer to switch name.
1694 * @new_fcf_record: pointer to fcf record.
1695 *
1696 * This routine compare the fcf record's switch name with provided
1697 * switch name. If the switch name are identical this function
1698 * returns 1 else return 0.
1699 **/
1700static uint32_t
1701lpfc_sw_name_match(uint8_t *sw_name, struct fcf_record *new_fcf_record)
1702{
1703 if (sw_name[0] != bf_get(lpfc_fcf_record_switch_name_0, new_fcf_record))
1704 return 0;
1705 if (sw_name[1] != bf_get(lpfc_fcf_record_switch_name_1, new_fcf_record))
1706 return 0;
1707 if (sw_name[2] != bf_get(lpfc_fcf_record_switch_name_2, new_fcf_record))
1708 return 0;
1709 if (sw_name[3] != bf_get(lpfc_fcf_record_switch_name_3, new_fcf_record))
1710 return 0;
1711 if (sw_name[4] != bf_get(lpfc_fcf_record_switch_name_4, new_fcf_record))
1712 return 0;
1713 if (sw_name[5] != bf_get(lpfc_fcf_record_switch_name_5, new_fcf_record))
1714 return 0;
1715 if (sw_name[6] != bf_get(lpfc_fcf_record_switch_name_6, new_fcf_record))
1716 return 0;
1717 if (sw_name[7] != bf_get(lpfc_fcf_record_switch_name_7, new_fcf_record))
1718 return 0;
1719 return 1;
1720}
1721
1722/**
1723 * lpfc_mac_addr_match - Check if the fcf mac address match.
1724 * @mac_addr: pointer to mac address.
1725 * @new_fcf_record: pointer to fcf record.
1726 *
1727 * This routine compare the fcf record's mac address with HBA's
1728 * FCF mac address. If the mac addresses are identical this function
1729 * returns 1 else return 0.
1730 **/
1731static uint32_t
1732lpfc_mac_addr_match(uint8_t *mac_addr, struct fcf_record *new_fcf_record)
1733{
1734 if (mac_addr[0] != bf_get(lpfc_fcf_record_mac_0, new_fcf_record))
1735 return 0;
1736 if (mac_addr[1] != bf_get(lpfc_fcf_record_mac_1, new_fcf_record))
1737 return 0;
1738 if (mac_addr[2] != bf_get(lpfc_fcf_record_mac_2, new_fcf_record))
1739 return 0;
1740 if (mac_addr[3] != bf_get(lpfc_fcf_record_mac_3, new_fcf_record))
1741 return 0;
1742 if (mac_addr[4] != bf_get(lpfc_fcf_record_mac_4, new_fcf_record))
1743 return 0;
1744 if (mac_addr[5] != bf_get(lpfc_fcf_record_mac_5, new_fcf_record))
1745 return 0;
1746 return 1;
1747}
1748
1749static bool
1750lpfc_vlan_id_match(uint16_t curr_vlan_id, uint16_t new_vlan_id)
1751{
1752 return (curr_vlan_id == new_vlan_id);
1753}
1754
1755/**
1756 * __lpfc_update_fcf_record_pri - update the lpfc_fcf_pri record.
1757 * @phba: pointer to lpfc hba data structure.
1758 * @fcf_index: Index for the lpfc_fcf_record.
1759 * @new_fcf_record: pointer to hba fcf record.
1760 *
1761 * This routine updates the driver FCF priority record from the new HBA FCF
1762 * record. The hbalock is asserted held in the code path calling this
1763 * routine.
1764 **/
1765static void
1766__lpfc_update_fcf_record_pri(struct lpfc_hba *phba, uint16_t fcf_index,
1767 struct fcf_record *new_fcf_record
1768 )
1769{
1770 struct lpfc_fcf_pri *fcf_pri;
1771
1772 fcf_pri = &phba->fcf.fcf_pri[fcf_index];
1773 fcf_pri->fcf_rec.fcf_index = fcf_index;
1774 /* FCF record priority */
1775 fcf_pri->fcf_rec.priority = new_fcf_record->fip_priority;
1776
1777}
1778
1779/**
1780 * lpfc_copy_fcf_record - Copy fcf information to lpfc_hba.
1781 * @fcf_rec: pointer to driver fcf record.
1782 * @new_fcf_record: pointer to fcf record.
1783 *
1784 * This routine copies the FCF information from the FCF
1785 * record to lpfc_hba data structure.
1786 **/
1787static void
1788lpfc_copy_fcf_record(struct lpfc_fcf_rec *fcf_rec,
1789 struct fcf_record *new_fcf_record)
1790{
1791 /* Fabric name */
1792 fcf_rec->fabric_name[0] =
1793 bf_get(lpfc_fcf_record_fab_name_0, new_fcf_record);
1794 fcf_rec->fabric_name[1] =
1795 bf_get(lpfc_fcf_record_fab_name_1, new_fcf_record);
1796 fcf_rec->fabric_name[2] =
1797 bf_get(lpfc_fcf_record_fab_name_2, new_fcf_record);
1798 fcf_rec->fabric_name[3] =
1799 bf_get(lpfc_fcf_record_fab_name_3, new_fcf_record);
1800 fcf_rec->fabric_name[4] =
1801 bf_get(lpfc_fcf_record_fab_name_4, new_fcf_record);
1802 fcf_rec->fabric_name[5] =
1803 bf_get(lpfc_fcf_record_fab_name_5, new_fcf_record);
1804 fcf_rec->fabric_name[6] =
1805 bf_get(lpfc_fcf_record_fab_name_6, new_fcf_record);
1806 fcf_rec->fabric_name[7] =
1807 bf_get(lpfc_fcf_record_fab_name_7, new_fcf_record);
1808 /* Mac address */
1809 fcf_rec->mac_addr[0] = bf_get(lpfc_fcf_record_mac_0, new_fcf_record);
1810 fcf_rec->mac_addr[1] = bf_get(lpfc_fcf_record_mac_1, new_fcf_record);
1811 fcf_rec->mac_addr[2] = bf_get(lpfc_fcf_record_mac_2, new_fcf_record);
1812 fcf_rec->mac_addr[3] = bf_get(lpfc_fcf_record_mac_3, new_fcf_record);
1813 fcf_rec->mac_addr[4] = bf_get(lpfc_fcf_record_mac_4, new_fcf_record);
1814 fcf_rec->mac_addr[5] = bf_get(lpfc_fcf_record_mac_5, new_fcf_record);
1815 /* FCF record index */
1816 fcf_rec->fcf_indx = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record);
1817 /* FCF record priority */
1818 fcf_rec->priority = new_fcf_record->fip_priority;
1819 /* Switch name */
1820 fcf_rec->switch_name[0] =
1821 bf_get(lpfc_fcf_record_switch_name_0, new_fcf_record);
1822 fcf_rec->switch_name[1] =
1823 bf_get(lpfc_fcf_record_switch_name_1, new_fcf_record);
1824 fcf_rec->switch_name[2] =
1825 bf_get(lpfc_fcf_record_switch_name_2, new_fcf_record);
1826 fcf_rec->switch_name[3] =
1827 bf_get(lpfc_fcf_record_switch_name_3, new_fcf_record);
1828 fcf_rec->switch_name[4] =
1829 bf_get(lpfc_fcf_record_switch_name_4, new_fcf_record);
1830 fcf_rec->switch_name[5] =
1831 bf_get(lpfc_fcf_record_switch_name_5, new_fcf_record);
1832 fcf_rec->switch_name[6] =
1833 bf_get(lpfc_fcf_record_switch_name_6, new_fcf_record);
1834 fcf_rec->switch_name[7] =
1835 bf_get(lpfc_fcf_record_switch_name_7, new_fcf_record);
1836}
1837
1838/**
1839 * __lpfc_update_fcf_record - Update driver fcf record
1840 * @phba: pointer to lpfc hba data structure.
1841 * @fcf_rec: pointer to driver fcf record.
1842 * @new_fcf_record: pointer to hba fcf record.
1843 * @addr_mode: address mode to be set to the driver fcf record.
1844 * @vlan_id: vlan tag to be set to the driver fcf record.
1845 * @flag: flag bits to be set to the driver fcf record.
1846 *
1847 * This routine updates the driver FCF record from the new HBA FCF record
1848 * together with the address mode, vlan_id, and other informations. This
1849 * routine is called with the hbalock held.
1850 **/
1851static void
1852__lpfc_update_fcf_record(struct lpfc_hba *phba, struct lpfc_fcf_rec *fcf_rec,
1853 struct fcf_record *new_fcf_record, uint32_t addr_mode,
1854 uint16_t vlan_id, uint32_t flag)
1855{
1856 lockdep_assert_held(&phba->hbalock);
1857
1858 /* Copy the fields from the HBA's FCF record */
1859 lpfc_copy_fcf_record(fcf_rec, new_fcf_record);
1860 /* Update other fields of driver FCF record */
1861 fcf_rec->addr_mode = addr_mode;
1862 fcf_rec->vlan_id = vlan_id;
1863 fcf_rec->flag |= (flag | RECORD_VALID);
1864 __lpfc_update_fcf_record_pri(phba,
1865 bf_get(lpfc_fcf_record_fcf_index, new_fcf_record),
1866 new_fcf_record);
1867}
1868
1869/**
1870 * lpfc_register_fcf - Register the FCF with hba.
1871 * @phba: pointer to lpfc hba data structure.
1872 *
1873 * This routine issues a register fcfi mailbox command to register
1874 * the fcf with HBA.
1875 **/
1876static void
1877lpfc_register_fcf(struct lpfc_hba *phba)
1878{
1879 LPFC_MBOXQ_t *fcf_mbxq;
1880 int rc;
1881
1882 spin_lock_irq(&phba->hbalock);
1883 /* If the FCF is not available do nothing. */
1884 if (!(phba->fcf.fcf_flag & FCF_AVAILABLE)) {
1885 spin_unlock_irq(&phba->hbalock);
1886 clear_bit(FCF_TS_INPROG, &phba->hba_flag);
1887 clear_bit(FCF_RR_INPROG, &phba->hba_flag);
1888 return;
1889 }
1890
1891 /* The FCF is already registered, start discovery */
1892 if (phba->fcf.fcf_flag & FCF_REGISTERED) {
1893 phba->fcf.fcf_flag |= (FCF_SCAN_DONE | FCF_IN_USE);
1894 spin_unlock_irq(&phba->hbalock);
1895 clear_bit(FCF_TS_INPROG, &phba->hba_flag);
1896 if (phba->pport->port_state != LPFC_FLOGI &&
1897 test_bit(FC_FABRIC, &phba->pport->fc_flag)) {
1898 set_bit(FCF_RR_INPROG, &phba->hba_flag);
1899 lpfc_initial_flogi(phba->pport);
1900 return;
1901 }
1902 return;
1903 }
1904 spin_unlock_irq(&phba->hbalock);
1905
1906 fcf_mbxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1907 if (!fcf_mbxq) {
1908 clear_bit(FCF_TS_INPROG, &phba->hba_flag);
1909 clear_bit(FCF_RR_INPROG, &phba->hba_flag);
1910 return;
1911 }
1912
1913 lpfc_reg_fcfi(phba, fcf_mbxq);
1914 fcf_mbxq->vport = phba->pport;
1915 fcf_mbxq->mbox_cmpl = lpfc_mbx_cmpl_reg_fcfi;
1916 rc = lpfc_sli_issue_mbox(phba, fcf_mbxq, MBX_NOWAIT);
1917 if (rc == MBX_NOT_FINISHED) {
1918 clear_bit(FCF_TS_INPROG, &phba->hba_flag);
1919 clear_bit(FCF_RR_INPROG, &phba->hba_flag);
1920 mempool_free(fcf_mbxq, phba->mbox_mem_pool);
1921 }
1922
1923 return;
1924}
1925
1926/**
1927 * lpfc_match_fcf_conn_list - Check if the FCF record can be used for discovery.
1928 * @phba: pointer to lpfc hba data structure.
1929 * @new_fcf_record: pointer to fcf record.
1930 * @boot_flag: Indicates if this record used by boot bios.
1931 * @addr_mode: The address mode to be used by this FCF
1932 * @vlan_id: The vlan id to be used as vlan tagging by this FCF.
1933 *
1934 * This routine compare the fcf record with connect list obtained from the
1935 * config region to decide if this FCF can be used for SAN discovery. It returns
1936 * 1 if this record can be used for SAN discovery else return zero. If this FCF
1937 * record can be used for SAN discovery, the boot_flag will indicate if this FCF
1938 * is used by boot bios and addr_mode will indicate the addressing mode to be
1939 * used for this FCF when the function returns.
1940 * If the FCF record need to be used with a particular vlan id, the vlan is
1941 * set in the vlan_id on return of the function. If not VLAN tagging need to
1942 * be used with the FCF vlan_id will be set to LPFC_FCOE_NULL_VID;
1943 **/
1944static int
1945lpfc_match_fcf_conn_list(struct lpfc_hba *phba,
1946 struct fcf_record *new_fcf_record,
1947 uint32_t *boot_flag, uint32_t *addr_mode,
1948 uint16_t *vlan_id)
1949{
1950 struct lpfc_fcf_conn_entry *conn_entry;
1951 int i, j, fcf_vlan_id = 0;
1952
1953 /* Find the lowest VLAN id in the FCF record */
1954 for (i = 0; i < 512; i++) {
1955 if (new_fcf_record->vlan_bitmap[i]) {
1956 fcf_vlan_id = i * 8;
1957 j = 0;
1958 while (!((new_fcf_record->vlan_bitmap[i] >> j) & 1)) {
1959 j++;
1960 fcf_vlan_id++;
1961 }
1962 break;
1963 }
1964 }
1965
1966 /* FCF not valid/available or solicitation in progress */
1967 if (!bf_get(lpfc_fcf_record_fcf_avail, new_fcf_record) ||
1968 !bf_get(lpfc_fcf_record_fcf_valid, new_fcf_record) ||
1969 bf_get(lpfc_fcf_record_fcf_sol, new_fcf_record))
1970 return 0;
1971
1972 if (!test_bit(HBA_FIP_SUPPORT, &phba->hba_flag)) {
1973 *boot_flag = 0;
1974 *addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov,
1975 new_fcf_record);
1976 if (phba->valid_vlan)
1977 *vlan_id = phba->vlan_id;
1978 else
1979 *vlan_id = LPFC_FCOE_NULL_VID;
1980 return 1;
1981 }
1982
1983 /*
1984 * If there are no FCF connection table entry, driver connect to all
1985 * FCFs.
1986 */
1987 if (list_empty(&phba->fcf_conn_rec_list)) {
1988 *boot_flag = 0;
1989 *addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov,
1990 new_fcf_record);
1991
1992 /*
1993 * When there are no FCF connect entries, use driver's default
1994 * addressing mode - FPMA.
1995 */
1996 if (*addr_mode & LPFC_FCF_FPMA)
1997 *addr_mode = LPFC_FCF_FPMA;
1998
1999 /* If FCF record report a vlan id use that vlan id */
2000 if (fcf_vlan_id)
2001 *vlan_id = fcf_vlan_id;
2002 else
2003 *vlan_id = LPFC_FCOE_NULL_VID;
2004 return 1;
2005 }
2006
2007 list_for_each_entry(conn_entry,
2008 &phba->fcf_conn_rec_list, list) {
2009 if (!(conn_entry->conn_rec.flags & FCFCNCT_VALID))
2010 continue;
2011
2012 if ((conn_entry->conn_rec.flags & FCFCNCT_FBNM_VALID) &&
2013 !lpfc_fab_name_match(conn_entry->conn_rec.fabric_name,
2014 new_fcf_record))
2015 continue;
2016 if ((conn_entry->conn_rec.flags & FCFCNCT_SWNM_VALID) &&
2017 !lpfc_sw_name_match(conn_entry->conn_rec.switch_name,
2018 new_fcf_record))
2019 continue;
2020 if (conn_entry->conn_rec.flags & FCFCNCT_VLAN_VALID) {
2021 /*
2022 * If the vlan bit map does not have the bit set for the
2023 * vlan id to be used, then it is not a match.
2024 */
2025 if (!(new_fcf_record->vlan_bitmap
2026 [conn_entry->conn_rec.vlan_tag / 8] &
2027 (1 << (conn_entry->conn_rec.vlan_tag % 8))))
2028 continue;
2029 }
2030
2031 /*
2032 * If connection record does not support any addressing mode,
2033 * skip the FCF record.
2034 */
2035 if (!(bf_get(lpfc_fcf_record_mac_addr_prov, new_fcf_record)
2036 & (LPFC_FCF_FPMA | LPFC_FCF_SPMA)))
2037 continue;
2038
2039 /*
2040 * Check if the connection record specifies a required
2041 * addressing mode.
2042 */
2043 if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) &&
2044 !(conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED)) {
2045
2046 /*
2047 * If SPMA required but FCF not support this continue.
2048 */
2049 if ((conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) &&
2050 !(bf_get(lpfc_fcf_record_mac_addr_prov,
2051 new_fcf_record) & LPFC_FCF_SPMA))
2052 continue;
2053
2054 /*
2055 * If FPMA required but FCF not support this continue.
2056 */
2057 if (!(conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) &&
2058 !(bf_get(lpfc_fcf_record_mac_addr_prov,
2059 new_fcf_record) & LPFC_FCF_FPMA))
2060 continue;
2061 }
2062
2063 /*
2064 * This fcf record matches filtering criteria.
2065 */
2066 if (conn_entry->conn_rec.flags & FCFCNCT_BOOT)
2067 *boot_flag = 1;
2068 else
2069 *boot_flag = 0;
2070
2071 /*
2072 * If user did not specify any addressing mode, or if the
2073 * preferred addressing mode specified by user is not supported
2074 * by FCF, allow fabric to pick the addressing mode.
2075 */
2076 *addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov,
2077 new_fcf_record);
2078 /*
2079 * If the user specified a required address mode, assign that
2080 * address mode
2081 */
2082 if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) &&
2083 (!(conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED)))
2084 *addr_mode = (conn_entry->conn_rec.flags &
2085 FCFCNCT_AM_SPMA) ?
2086 LPFC_FCF_SPMA : LPFC_FCF_FPMA;
2087 /*
2088 * If the user specified a preferred address mode, use the
2089 * addr mode only if FCF support the addr_mode.
2090 */
2091 else if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) &&
2092 (conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED) &&
2093 (conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) &&
2094 (*addr_mode & LPFC_FCF_SPMA))
2095 *addr_mode = LPFC_FCF_SPMA;
2096 else if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) &&
2097 (conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED) &&
2098 !(conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) &&
2099 (*addr_mode & LPFC_FCF_FPMA))
2100 *addr_mode = LPFC_FCF_FPMA;
2101
2102 /* If matching connect list has a vlan id, use it */
2103 if (conn_entry->conn_rec.flags & FCFCNCT_VLAN_VALID)
2104 *vlan_id = conn_entry->conn_rec.vlan_tag;
2105 /*
2106 * If no vlan id is specified in connect list, use the vlan id
2107 * in the FCF record
2108 */
2109 else if (fcf_vlan_id)
2110 *vlan_id = fcf_vlan_id;
2111 else
2112 *vlan_id = LPFC_FCOE_NULL_VID;
2113
2114 return 1;
2115 }
2116
2117 return 0;
2118}
2119
2120/**
2121 * lpfc_check_pending_fcoe_event - Check if there is pending fcoe event.
2122 * @phba: pointer to lpfc hba data structure.
2123 * @unreg_fcf: Unregister FCF if FCF table need to be re-scaned.
2124 *
2125 * This function check if there is any fcoe event pending while driver
2126 * scan FCF entries. If there is any pending event, it will restart the
2127 * FCF saning and return 1 else return 0.
2128 */
2129int
2130lpfc_check_pending_fcoe_event(struct lpfc_hba *phba, uint8_t unreg_fcf)
2131{
2132 /*
2133 * If the Link is up and no FCoE events while in the
2134 * FCF discovery, no need to restart FCF discovery.
2135 */
2136 if ((phba->link_state >= LPFC_LINK_UP) &&
2137 (phba->fcoe_eventtag == phba->fcoe_eventtag_at_fcf_scan))
2138 return 0;
2139
2140 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2141 "2768 Pending link or FCF event during current "
2142 "handling of the previous event: link_state:x%x, "
2143 "evt_tag_at_scan:x%x, evt_tag_current:x%x\n",
2144 phba->link_state, phba->fcoe_eventtag_at_fcf_scan,
2145 phba->fcoe_eventtag);
2146
2147 spin_lock_irq(&phba->hbalock);
2148 phba->fcf.fcf_flag &= ~FCF_AVAILABLE;
2149 spin_unlock_irq(&phba->hbalock);
2150
2151 if (phba->link_state >= LPFC_LINK_UP) {
2152 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY,
2153 "2780 Restart FCF table scan due to "
2154 "pending FCF event:evt_tag_at_scan:x%x, "
2155 "evt_tag_current:x%x\n",
2156 phba->fcoe_eventtag_at_fcf_scan,
2157 phba->fcoe_eventtag);
2158 lpfc_sli4_fcf_scan_read_fcf_rec(phba, LPFC_FCOE_FCF_GET_FIRST);
2159 } else {
2160 /*
2161 * Do not continue FCF discovery and clear FCF_TS_INPROG
2162 * flag
2163 */
2164 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY,
2165 "2833 Stop FCF discovery process due to link "
2166 "state change (x%x)\n", phba->link_state);
2167 clear_bit(FCF_TS_INPROG, &phba->hba_flag);
2168 clear_bit(FCF_RR_INPROG, &phba->hba_flag);
2169 spin_lock_irq(&phba->hbalock);
2170 phba->fcf.fcf_flag &= ~(FCF_REDISC_FOV | FCF_DISCOVERY);
2171 spin_unlock_irq(&phba->hbalock);
2172 }
2173
2174 /* Unregister the currently registered FCF if required */
2175 if (unreg_fcf) {
2176 spin_lock_irq(&phba->hbalock);
2177 phba->fcf.fcf_flag &= ~FCF_REGISTERED;
2178 spin_unlock_irq(&phba->hbalock);
2179 lpfc_sli4_unregister_fcf(phba);
2180 }
2181 return 1;
2182}
2183
2184/**
2185 * lpfc_sli4_new_fcf_random_select - Randomly select an eligible new fcf record
2186 * @phba: pointer to lpfc hba data structure.
2187 * @fcf_cnt: number of eligible fcf record seen so far.
2188 *
2189 * This function makes an running random selection decision on FCF record to
2190 * use through a sequence of @fcf_cnt eligible FCF records with equal
2191 * probability. To perform integer manunipulation of random numbers with
2192 * size unit32_t, a 16-bit random number returned from get_random_u16() is
2193 * taken as the random random number generated.
2194 *
2195 * Returns true when outcome is for the newly read FCF record should be
2196 * chosen; otherwise, return false when outcome is for keeping the previously
2197 * chosen FCF record.
2198 **/
2199static bool
2200lpfc_sli4_new_fcf_random_select(struct lpfc_hba *phba, uint32_t fcf_cnt)
2201{
2202 uint32_t rand_num;
2203
2204 /* Get 16-bit uniform random number */
2205 rand_num = get_random_u16();
2206
2207 /* Decision with probability 1/fcf_cnt */
2208 if ((fcf_cnt * rand_num) < 0xFFFF)
2209 return true;
2210 else
2211 return false;
2212}
2213
2214/**
2215 * lpfc_sli4_fcf_rec_mbox_parse - Parse read_fcf mbox command.
2216 * @phba: pointer to lpfc hba data structure.
2217 * @mboxq: pointer to mailbox object.
2218 * @next_fcf_index: pointer to holder of next fcf index.
2219 *
2220 * This routine parses the non-embedded fcf mailbox command by performing the
2221 * necessarily error checking, non-embedded read FCF record mailbox command
2222 * SGE parsing, and endianness swapping.
2223 *
2224 * Returns the pointer to the new FCF record in the non-embedded mailbox
2225 * command DMA memory if successfully, other NULL.
2226 */
2227static struct fcf_record *
2228lpfc_sli4_fcf_rec_mbox_parse(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq,
2229 uint16_t *next_fcf_index)
2230{
2231 void *virt_addr;
2232 struct lpfc_mbx_sge sge;
2233 struct lpfc_mbx_read_fcf_tbl *read_fcf;
2234 uint32_t shdr_status, shdr_add_status, if_type;
2235 union lpfc_sli4_cfg_shdr *shdr;
2236 struct fcf_record *new_fcf_record;
2237
2238 /* Get the first SGE entry from the non-embedded DMA memory. This
2239 * routine only uses a single SGE.
2240 */
2241 lpfc_sli4_mbx_sge_get(mboxq, 0, &sge);
2242 if (unlikely(!mboxq->sge_array)) {
2243 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
2244 "2524 Failed to get the non-embedded SGE "
2245 "virtual address\n");
2246 return NULL;
2247 }
2248 virt_addr = mboxq->sge_array->addr[0];
2249
2250 shdr = (union lpfc_sli4_cfg_shdr *)virt_addr;
2251 lpfc_sli_pcimem_bcopy(shdr, shdr,
2252 sizeof(union lpfc_sli4_cfg_shdr));
2253 shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
2254 if_type = bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf);
2255 shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
2256 if (shdr_status || shdr_add_status) {
2257 if (shdr_status == STATUS_FCF_TABLE_EMPTY ||
2258 if_type == LPFC_SLI_INTF_IF_TYPE_2)
2259 lpfc_printf_log(phba, KERN_ERR,
2260 LOG_TRACE_EVENT,
2261 "2726 READ_FCF_RECORD Indicates empty "
2262 "FCF table.\n");
2263 else
2264 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
2265 "2521 READ_FCF_RECORD mailbox failed "
2266 "with status x%x add_status x%x, "
2267 "mbx\n", shdr_status, shdr_add_status);
2268 return NULL;
2269 }
2270
2271 /* Interpreting the returned information of the FCF record */
2272 read_fcf = (struct lpfc_mbx_read_fcf_tbl *)virt_addr;
2273 lpfc_sli_pcimem_bcopy(read_fcf, read_fcf,
2274 sizeof(struct lpfc_mbx_read_fcf_tbl));
2275 *next_fcf_index = bf_get(lpfc_mbx_read_fcf_tbl_nxt_vindx, read_fcf);
2276 new_fcf_record = (struct fcf_record *)(virt_addr +
2277 sizeof(struct lpfc_mbx_read_fcf_tbl));
2278 lpfc_sli_pcimem_bcopy(new_fcf_record, new_fcf_record,
2279 offsetof(struct fcf_record, vlan_bitmap));
2280 new_fcf_record->word137 = le32_to_cpu(new_fcf_record->word137);
2281 new_fcf_record->word138 = le32_to_cpu(new_fcf_record->word138);
2282
2283 return new_fcf_record;
2284}
2285
2286/**
2287 * lpfc_sli4_log_fcf_record_info - Log the information of a fcf record
2288 * @phba: pointer to lpfc hba data structure.
2289 * @fcf_record: pointer to the fcf record.
2290 * @vlan_id: the lowest vlan identifier associated to this fcf record.
2291 * @next_fcf_index: the index to the next fcf record in hba's fcf table.
2292 *
2293 * This routine logs the detailed FCF record if the LOG_FIP loggin is
2294 * enabled.
2295 **/
2296static void
2297lpfc_sli4_log_fcf_record_info(struct lpfc_hba *phba,
2298 struct fcf_record *fcf_record,
2299 uint16_t vlan_id,
2300 uint16_t next_fcf_index)
2301{
2302 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2303 "2764 READ_FCF_RECORD:\n"
2304 "\tFCF_Index : x%x\n"
2305 "\tFCF_Avail : x%x\n"
2306 "\tFCF_Valid : x%x\n"
2307 "\tFCF_SOL : x%x\n"
2308 "\tFIP_Priority : x%x\n"
2309 "\tMAC_Provider : x%x\n"
2310 "\tLowest VLANID : x%x\n"
2311 "\tFCF_MAC Addr : x%x:%x:%x:%x:%x:%x\n"
2312 "\tFabric_Name : x%x:%x:%x:%x:%x:%x:%x:%x\n"
2313 "\tSwitch_Name : x%x:%x:%x:%x:%x:%x:%x:%x\n"
2314 "\tNext_FCF_Index: x%x\n",
2315 bf_get(lpfc_fcf_record_fcf_index, fcf_record),
2316 bf_get(lpfc_fcf_record_fcf_avail, fcf_record),
2317 bf_get(lpfc_fcf_record_fcf_valid, fcf_record),
2318 bf_get(lpfc_fcf_record_fcf_sol, fcf_record),
2319 fcf_record->fip_priority,
2320 bf_get(lpfc_fcf_record_mac_addr_prov, fcf_record),
2321 vlan_id,
2322 bf_get(lpfc_fcf_record_mac_0, fcf_record),
2323 bf_get(lpfc_fcf_record_mac_1, fcf_record),
2324 bf_get(lpfc_fcf_record_mac_2, fcf_record),
2325 bf_get(lpfc_fcf_record_mac_3, fcf_record),
2326 bf_get(lpfc_fcf_record_mac_4, fcf_record),
2327 bf_get(lpfc_fcf_record_mac_5, fcf_record),
2328 bf_get(lpfc_fcf_record_fab_name_0, fcf_record),
2329 bf_get(lpfc_fcf_record_fab_name_1, fcf_record),
2330 bf_get(lpfc_fcf_record_fab_name_2, fcf_record),
2331 bf_get(lpfc_fcf_record_fab_name_3, fcf_record),
2332 bf_get(lpfc_fcf_record_fab_name_4, fcf_record),
2333 bf_get(lpfc_fcf_record_fab_name_5, fcf_record),
2334 bf_get(lpfc_fcf_record_fab_name_6, fcf_record),
2335 bf_get(lpfc_fcf_record_fab_name_7, fcf_record),
2336 bf_get(lpfc_fcf_record_switch_name_0, fcf_record),
2337 bf_get(lpfc_fcf_record_switch_name_1, fcf_record),
2338 bf_get(lpfc_fcf_record_switch_name_2, fcf_record),
2339 bf_get(lpfc_fcf_record_switch_name_3, fcf_record),
2340 bf_get(lpfc_fcf_record_switch_name_4, fcf_record),
2341 bf_get(lpfc_fcf_record_switch_name_5, fcf_record),
2342 bf_get(lpfc_fcf_record_switch_name_6, fcf_record),
2343 bf_get(lpfc_fcf_record_switch_name_7, fcf_record),
2344 next_fcf_index);
2345}
2346
2347/**
2348 * lpfc_sli4_fcf_record_match - testing new FCF record for matching existing FCF
2349 * @phba: pointer to lpfc hba data structure.
2350 * @fcf_rec: pointer to an existing FCF record.
2351 * @new_fcf_record: pointer to a new FCF record.
2352 * @new_vlan_id: vlan id from the new FCF record.
2353 *
2354 * This function performs matching test of a new FCF record against an existing
2355 * FCF record. If the new_vlan_id passed in is LPFC_FCOE_IGNORE_VID, vlan id
2356 * will not be used as part of the FCF record matching criteria.
2357 *
2358 * Returns true if all the fields matching, otherwise returns false.
2359 */
2360static bool
2361lpfc_sli4_fcf_record_match(struct lpfc_hba *phba,
2362 struct lpfc_fcf_rec *fcf_rec,
2363 struct fcf_record *new_fcf_record,
2364 uint16_t new_vlan_id)
2365{
2366 if (new_vlan_id != LPFC_FCOE_IGNORE_VID)
2367 if (!lpfc_vlan_id_match(fcf_rec->vlan_id, new_vlan_id))
2368 return false;
2369 if (!lpfc_mac_addr_match(fcf_rec->mac_addr, new_fcf_record))
2370 return false;
2371 if (!lpfc_sw_name_match(fcf_rec->switch_name, new_fcf_record))
2372 return false;
2373 if (!lpfc_fab_name_match(fcf_rec->fabric_name, new_fcf_record))
2374 return false;
2375 if (fcf_rec->priority != new_fcf_record->fip_priority)
2376 return false;
2377 return true;
2378}
2379
2380/**
2381 * lpfc_sli4_fcf_rr_next_proc - processing next roundrobin fcf
2382 * @vport: Pointer to vport object.
2383 * @fcf_index: index to next fcf.
2384 *
2385 * This function processing the roundrobin fcf failover to next fcf index.
2386 * When this function is invoked, there will be a current fcf registered
2387 * for flogi.
2388 * Return: 0 for continue retrying flogi on currently registered fcf;
2389 * 1 for stop flogi on currently registered fcf;
2390 */
2391int lpfc_sli4_fcf_rr_next_proc(struct lpfc_vport *vport, uint16_t fcf_index)
2392{
2393 struct lpfc_hba *phba = vport->phba;
2394 int rc;
2395
2396 if (fcf_index == LPFC_FCOE_FCF_NEXT_NONE) {
2397 if (test_bit(HBA_DEVLOSS_TMO, &phba->hba_flag)) {
2398 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2399 "2872 Devloss tmo with no eligible "
2400 "FCF, unregister in-use FCF (x%x) "
2401 "and rescan FCF table\n",
2402 phba->fcf.current_rec.fcf_indx);
2403 lpfc_unregister_fcf_rescan(phba);
2404 goto stop_flogi_current_fcf;
2405 }
2406 /* Mark the end to FLOGI roundrobin failover */
2407 clear_bit(FCF_RR_INPROG, &phba->hba_flag);
2408 /* Allow action to new fcf asynchronous event */
2409 spin_lock_irq(&phba->hbalock);
2410 phba->fcf.fcf_flag &= ~(FCF_AVAILABLE | FCF_SCAN_DONE);
2411 spin_unlock_irq(&phba->hbalock);
2412 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2413 "2865 No FCF available, stop roundrobin FCF "
2414 "failover and change port state:x%x/x%x\n",
2415 phba->pport->port_state, LPFC_VPORT_UNKNOWN);
2416 phba->pport->port_state = LPFC_VPORT_UNKNOWN;
2417
2418 if (!phba->fcf.fcf_redisc_attempted) {
2419 lpfc_unregister_fcf(phba);
2420
2421 rc = lpfc_sli4_redisc_fcf_table(phba);
2422 if (!rc) {
2423 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2424 "3195 Rediscover FCF table\n");
2425 phba->fcf.fcf_redisc_attempted = 1;
2426 lpfc_sli4_clear_fcf_rr_bmask(phba);
2427 } else {
2428 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
2429 "3196 Rediscover FCF table "
2430 "failed. Status:x%x\n", rc);
2431 }
2432 } else {
2433 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
2434 "3197 Already rediscover FCF table "
2435 "attempted. No more retry\n");
2436 }
2437 goto stop_flogi_current_fcf;
2438 } else {
2439 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_ELS,
2440 "2794 Try FLOGI roundrobin FCF failover to "
2441 "(x%x)\n", fcf_index);
2442 rc = lpfc_sli4_fcf_rr_read_fcf_rec(phba, fcf_index);
2443 if (rc)
2444 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP | LOG_ELS,
2445 "2761 FLOGI roundrobin FCF failover "
2446 "failed (rc:x%x) to read FCF (x%x)\n",
2447 rc, phba->fcf.current_rec.fcf_indx);
2448 else
2449 goto stop_flogi_current_fcf;
2450 }
2451 return 0;
2452
2453stop_flogi_current_fcf:
2454 lpfc_can_disctmo(vport);
2455 return 1;
2456}
2457
2458/**
2459 * lpfc_sli4_fcf_pri_list_del
2460 * @phba: pointer to lpfc hba data structure.
2461 * @fcf_index: the index of the fcf record to delete
2462 * This routine checks the on list flag of the fcf_index to be deleted.
2463 * If it is one the list then it is removed from the list, and the flag
2464 * is cleared. This routine grab the hbalock before removing the fcf
2465 * record from the list.
2466 **/
2467static void lpfc_sli4_fcf_pri_list_del(struct lpfc_hba *phba,
2468 uint16_t fcf_index)
2469{
2470 struct lpfc_fcf_pri *new_fcf_pri;
2471
2472 new_fcf_pri = &phba->fcf.fcf_pri[fcf_index];
2473 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2474 "3058 deleting idx x%x pri x%x flg x%x\n",
2475 fcf_index, new_fcf_pri->fcf_rec.priority,
2476 new_fcf_pri->fcf_rec.flag);
2477 spin_lock_irq(&phba->hbalock);
2478 if (new_fcf_pri->fcf_rec.flag & LPFC_FCF_ON_PRI_LIST) {
2479 if (phba->fcf.current_rec.priority ==
2480 new_fcf_pri->fcf_rec.priority)
2481 phba->fcf.eligible_fcf_cnt--;
2482 list_del_init(&new_fcf_pri->list);
2483 new_fcf_pri->fcf_rec.flag &= ~LPFC_FCF_ON_PRI_LIST;
2484 }
2485 spin_unlock_irq(&phba->hbalock);
2486}
2487
2488/**
2489 * lpfc_sli4_set_fcf_flogi_fail
2490 * @phba: pointer to lpfc hba data structure.
2491 * @fcf_index: the index of the fcf record to update
2492 * This routine acquires the hbalock and then set the LPFC_FCF_FLOGI_FAILED
2493 * flag so the round robin selection for the particular priority level
2494 * will try a different fcf record that does not have this bit set.
2495 * If the fcf record is re-read for any reason this flag is cleared brfore
2496 * adding it to the priority list.
2497 **/
2498void
2499lpfc_sli4_set_fcf_flogi_fail(struct lpfc_hba *phba, uint16_t fcf_index)
2500{
2501 struct lpfc_fcf_pri *new_fcf_pri;
2502 new_fcf_pri = &phba->fcf.fcf_pri[fcf_index];
2503 spin_lock_irq(&phba->hbalock);
2504 new_fcf_pri->fcf_rec.flag |= LPFC_FCF_FLOGI_FAILED;
2505 spin_unlock_irq(&phba->hbalock);
2506}
2507
2508/**
2509 * lpfc_sli4_fcf_pri_list_add
2510 * @phba: pointer to lpfc hba data structure.
2511 * @fcf_index: the index of the fcf record to add
2512 * @new_fcf_record: pointer to a new FCF record.
2513 * This routine checks the priority of the fcf_index to be added.
2514 * If it is a lower priority than the current head of the fcf_pri list
2515 * then it is added to the list in the right order.
2516 * If it is the same priority as the current head of the list then it
2517 * is added to the head of the list and its bit in the rr_bmask is set.
2518 * If the fcf_index to be added is of a higher priority than the current
2519 * head of the list then the rr_bmask is cleared, its bit is set in the
2520 * rr_bmask and it is added to the head of the list.
2521 * returns:
2522 * 0=success 1=failure
2523 **/
2524static int lpfc_sli4_fcf_pri_list_add(struct lpfc_hba *phba,
2525 uint16_t fcf_index,
2526 struct fcf_record *new_fcf_record)
2527{
2528 uint16_t current_fcf_pri;
2529 uint16_t last_index;
2530 struct lpfc_fcf_pri *fcf_pri;
2531 struct lpfc_fcf_pri *next_fcf_pri;
2532 struct lpfc_fcf_pri *new_fcf_pri;
2533 int ret;
2534
2535 new_fcf_pri = &phba->fcf.fcf_pri[fcf_index];
2536 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2537 "3059 adding idx x%x pri x%x flg x%x\n",
2538 fcf_index, new_fcf_record->fip_priority,
2539 new_fcf_pri->fcf_rec.flag);
2540 spin_lock_irq(&phba->hbalock);
2541 if (new_fcf_pri->fcf_rec.flag & LPFC_FCF_ON_PRI_LIST)
2542 list_del_init(&new_fcf_pri->list);
2543 new_fcf_pri->fcf_rec.fcf_index = fcf_index;
2544 new_fcf_pri->fcf_rec.priority = new_fcf_record->fip_priority;
2545 if (list_empty(&phba->fcf.fcf_pri_list)) {
2546 list_add(&new_fcf_pri->list, &phba->fcf.fcf_pri_list);
2547 ret = lpfc_sli4_fcf_rr_index_set(phba,
2548 new_fcf_pri->fcf_rec.fcf_index);
2549 goto out;
2550 }
2551
2552 last_index = find_first_bit(phba->fcf.fcf_rr_bmask,
2553 LPFC_SLI4_FCF_TBL_INDX_MAX);
2554 if (last_index >= LPFC_SLI4_FCF_TBL_INDX_MAX) {
2555 ret = 0; /* Empty rr list */
2556 goto out;
2557 }
2558 current_fcf_pri = phba->fcf.fcf_pri[last_index].fcf_rec.priority;
2559 if (new_fcf_pri->fcf_rec.priority <= current_fcf_pri) {
2560 list_add(&new_fcf_pri->list, &phba->fcf.fcf_pri_list);
2561 if (new_fcf_pri->fcf_rec.priority < current_fcf_pri) {
2562 memset(phba->fcf.fcf_rr_bmask, 0,
2563 sizeof(*phba->fcf.fcf_rr_bmask));
2564 /* fcfs_at_this_priority_level = 1; */
2565 phba->fcf.eligible_fcf_cnt = 1;
2566 } else
2567 /* fcfs_at_this_priority_level++; */
2568 phba->fcf.eligible_fcf_cnt++;
2569 ret = lpfc_sli4_fcf_rr_index_set(phba,
2570 new_fcf_pri->fcf_rec.fcf_index);
2571 goto out;
2572 }
2573
2574 list_for_each_entry_safe(fcf_pri, next_fcf_pri,
2575 &phba->fcf.fcf_pri_list, list) {
2576 if (new_fcf_pri->fcf_rec.priority <=
2577 fcf_pri->fcf_rec.priority) {
2578 if (fcf_pri->list.prev == &phba->fcf.fcf_pri_list)
2579 list_add(&new_fcf_pri->list,
2580 &phba->fcf.fcf_pri_list);
2581 else
2582 list_add(&new_fcf_pri->list,
2583 &((struct lpfc_fcf_pri *)
2584 fcf_pri->list.prev)->list);
2585 ret = 0;
2586 goto out;
2587 } else if (fcf_pri->list.next == &phba->fcf.fcf_pri_list
2588 || new_fcf_pri->fcf_rec.priority <
2589 next_fcf_pri->fcf_rec.priority) {
2590 list_add(&new_fcf_pri->list, &fcf_pri->list);
2591 ret = 0;
2592 goto out;
2593 }
2594 if (new_fcf_pri->fcf_rec.priority > fcf_pri->fcf_rec.priority)
2595 continue;
2596
2597 }
2598 ret = 1;
2599out:
2600 /* we use = instead of |= to clear the FLOGI_FAILED flag. */
2601 new_fcf_pri->fcf_rec.flag = LPFC_FCF_ON_PRI_LIST;
2602 spin_unlock_irq(&phba->hbalock);
2603 return ret;
2604}
2605
2606/**
2607 * lpfc_mbx_cmpl_fcf_scan_read_fcf_rec - fcf scan read_fcf mbox cmpl handler.
2608 * @phba: pointer to lpfc hba data structure.
2609 * @mboxq: pointer to mailbox object.
2610 *
2611 * This function iterates through all the fcf records available in
2612 * HBA and chooses the optimal FCF record for discovery. After finding
2613 * the FCF for discovery it registers the FCF record and kicks start
2614 * discovery.
2615 * If FCF_IN_USE flag is set in currently used FCF, the routine tries to
2616 * use an FCF record which matches fabric name and mac address of the
2617 * currently used FCF record.
2618 * If the driver supports only one FCF, it will try to use the FCF record
2619 * used by BOOT_BIOS.
2620 */
2621void
2622lpfc_mbx_cmpl_fcf_scan_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
2623{
2624 struct fcf_record *new_fcf_record;
2625 uint32_t boot_flag, addr_mode;
2626 uint16_t fcf_index, next_fcf_index;
2627 struct lpfc_fcf_rec *fcf_rec = NULL;
2628 uint16_t vlan_id = LPFC_FCOE_NULL_VID;
2629 bool select_new_fcf;
2630 int rc;
2631
2632 /* If there is pending FCoE event restart FCF table scan */
2633 if (lpfc_check_pending_fcoe_event(phba, LPFC_SKIP_UNREG_FCF)) {
2634 lpfc_sli4_mbox_cmd_free(phba, mboxq);
2635 return;
2636 }
2637
2638 /* Parse the FCF record from the non-embedded mailbox command */
2639 new_fcf_record = lpfc_sli4_fcf_rec_mbox_parse(phba, mboxq,
2640 &next_fcf_index);
2641 if (!new_fcf_record) {
2642 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
2643 "2765 Mailbox command READ_FCF_RECORD "
2644 "failed to retrieve a FCF record.\n");
2645 /* Let next new FCF event trigger fast failover */
2646 clear_bit(FCF_TS_INPROG, &phba->hba_flag);
2647 lpfc_sli4_mbox_cmd_free(phba, mboxq);
2648 return;
2649 }
2650
2651 /* Check the FCF record against the connection list */
2652 rc = lpfc_match_fcf_conn_list(phba, new_fcf_record, &boot_flag,
2653 &addr_mode, &vlan_id);
2654
2655 /* Log the FCF record information if turned on */
2656 lpfc_sli4_log_fcf_record_info(phba, new_fcf_record, vlan_id,
2657 next_fcf_index);
2658
2659 /*
2660 * If the fcf record does not match with connect list entries
2661 * read the next entry; otherwise, this is an eligible FCF
2662 * record for roundrobin FCF failover.
2663 */
2664 if (!rc) {
2665 lpfc_sli4_fcf_pri_list_del(phba,
2666 bf_get(lpfc_fcf_record_fcf_index,
2667 new_fcf_record));
2668 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
2669 "2781 FCF (x%x) failed connection "
2670 "list check: (x%x/x%x/%x)\n",
2671 bf_get(lpfc_fcf_record_fcf_index,
2672 new_fcf_record),
2673 bf_get(lpfc_fcf_record_fcf_avail,
2674 new_fcf_record),
2675 bf_get(lpfc_fcf_record_fcf_valid,
2676 new_fcf_record),
2677 bf_get(lpfc_fcf_record_fcf_sol,
2678 new_fcf_record));
2679 if ((phba->fcf.fcf_flag & FCF_IN_USE) &&
2680 lpfc_sli4_fcf_record_match(phba, &phba->fcf.current_rec,
2681 new_fcf_record, LPFC_FCOE_IGNORE_VID)) {
2682 if (bf_get(lpfc_fcf_record_fcf_index, new_fcf_record) !=
2683 phba->fcf.current_rec.fcf_indx) {
2684 lpfc_printf_log(phba, KERN_ERR,
2685 LOG_TRACE_EVENT,
2686 "2862 FCF (x%x) matches property "
2687 "of in-use FCF (x%x)\n",
2688 bf_get(lpfc_fcf_record_fcf_index,
2689 new_fcf_record),
2690 phba->fcf.current_rec.fcf_indx);
2691 goto read_next_fcf;
2692 }
2693 /*
2694 * In case the current in-use FCF record becomes
2695 * invalid/unavailable during FCF discovery that
2696 * was not triggered by fast FCF failover process,
2697 * treat it as fast FCF failover.
2698 */
2699 if (!(phba->fcf.fcf_flag & FCF_REDISC_PEND) &&
2700 !(phba->fcf.fcf_flag & FCF_REDISC_FOV)) {
2701 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
2702 "2835 Invalid in-use FCF "
2703 "(x%x), enter FCF failover "
2704 "table scan.\n",
2705 phba->fcf.current_rec.fcf_indx);
2706 spin_lock_irq(&phba->hbalock);
2707 phba->fcf.fcf_flag |= FCF_REDISC_FOV;
2708 spin_unlock_irq(&phba->hbalock);
2709 lpfc_sli4_mbox_cmd_free(phba, mboxq);
2710 lpfc_sli4_fcf_scan_read_fcf_rec(phba,
2711 LPFC_FCOE_FCF_GET_FIRST);
2712 return;
2713 }
2714 }
2715 goto read_next_fcf;
2716 } else {
2717 fcf_index = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record);
2718 rc = lpfc_sli4_fcf_pri_list_add(phba, fcf_index,
2719 new_fcf_record);
2720 if (rc)
2721 goto read_next_fcf;
2722 }
2723
2724 /*
2725 * If this is not the first FCF discovery of the HBA, use last
2726 * FCF record for the discovery. The condition that a rescan
2727 * matches the in-use FCF record: fabric name, switch name, mac
2728 * address, and vlan_id.
2729 */
2730 spin_lock_irq(&phba->hbalock);
2731 if (phba->fcf.fcf_flag & FCF_IN_USE) {
2732 if (phba->cfg_fcf_failover_policy == LPFC_FCF_FOV &&
2733 lpfc_sli4_fcf_record_match(phba, &phba->fcf.current_rec,
2734 new_fcf_record, vlan_id)) {
2735 if (bf_get(lpfc_fcf_record_fcf_index, new_fcf_record) ==
2736 phba->fcf.current_rec.fcf_indx) {
2737 phba->fcf.fcf_flag |= FCF_AVAILABLE;
2738 if (phba->fcf.fcf_flag & FCF_REDISC_PEND)
2739 /* Stop FCF redisc wait timer */
2740 __lpfc_sli4_stop_fcf_redisc_wait_timer(
2741 phba);
2742 else if (phba->fcf.fcf_flag & FCF_REDISC_FOV)
2743 /* Fast failover, mark completed */
2744 phba->fcf.fcf_flag &= ~FCF_REDISC_FOV;
2745 spin_unlock_irq(&phba->hbalock);
2746 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2747 "2836 New FCF matches in-use "
2748 "FCF (x%x), port_state:x%x, "
2749 "fc_flag:x%lx\n",
2750 phba->fcf.current_rec.fcf_indx,
2751 phba->pport->port_state,
2752 phba->pport->fc_flag);
2753 goto out;
2754 } else
2755 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
2756 "2863 New FCF (x%x) matches "
2757 "property of in-use FCF (x%x)\n",
2758 bf_get(lpfc_fcf_record_fcf_index,
2759 new_fcf_record),
2760 phba->fcf.current_rec.fcf_indx);
2761 }
2762 /*
2763 * Read next FCF record from HBA searching for the matching
2764 * with in-use record only if not during the fast failover
2765 * period. In case of fast failover period, it shall try to
2766 * determine whether the FCF record just read should be the
2767 * next candidate.
2768 */
2769 if (!(phba->fcf.fcf_flag & FCF_REDISC_FOV)) {
2770 spin_unlock_irq(&phba->hbalock);
2771 goto read_next_fcf;
2772 }
2773 }
2774 /*
2775 * Update on failover FCF record only if it's in FCF fast-failover
2776 * period; otherwise, update on current FCF record.
2777 */
2778 if (phba->fcf.fcf_flag & FCF_REDISC_FOV)
2779 fcf_rec = &phba->fcf.failover_rec;
2780 else
2781 fcf_rec = &phba->fcf.current_rec;
2782
2783 if (phba->fcf.fcf_flag & FCF_AVAILABLE) {
2784 /*
2785 * If the driver FCF record does not have boot flag
2786 * set and new hba fcf record has boot flag set, use
2787 * the new hba fcf record.
2788 */
2789 if (boot_flag && !(fcf_rec->flag & BOOT_ENABLE)) {
2790 /* Choose this FCF record */
2791 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2792 "2837 Update current FCF record "
2793 "(x%x) with new FCF record (x%x)\n",
2794 fcf_rec->fcf_indx,
2795 bf_get(lpfc_fcf_record_fcf_index,
2796 new_fcf_record));
2797 __lpfc_update_fcf_record(phba, fcf_rec, new_fcf_record,
2798 addr_mode, vlan_id, BOOT_ENABLE);
2799 spin_unlock_irq(&phba->hbalock);
2800 goto read_next_fcf;
2801 }
2802 /*
2803 * If the driver FCF record has boot flag set and the
2804 * new hba FCF record does not have boot flag, read
2805 * the next FCF record.
2806 */
2807 if (!boot_flag && (fcf_rec->flag & BOOT_ENABLE)) {
2808 spin_unlock_irq(&phba->hbalock);
2809 goto read_next_fcf;
2810 }
2811 /*
2812 * If the new hba FCF record has lower priority value
2813 * than the driver FCF record, use the new record.
2814 */
2815 if (new_fcf_record->fip_priority < fcf_rec->priority) {
2816 /* Choose the new FCF record with lower priority */
2817 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2818 "2838 Update current FCF record "
2819 "(x%x) with new FCF record (x%x)\n",
2820 fcf_rec->fcf_indx,
2821 bf_get(lpfc_fcf_record_fcf_index,
2822 new_fcf_record));
2823 __lpfc_update_fcf_record(phba, fcf_rec, new_fcf_record,
2824 addr_mode, vlan_id, 0);
2825 /* Reset running random FCF selection count */
2826 phba->fcf.eligible_fcf_cnt = 1;
2827 } else if (new_fcf_record->fip_priority == fcf_rec->priority) {
2828 /* Update running random FCF selection count */
2829 phba->fcf.eligible_fcf_cnt++;
2830 select_new_fcf = lpfc_sli4_new_fcf_random_select(phba,
2831 phba->fcf.eligible_fcf_cnt);
2832 if (select_new_fcf) {
2833 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2834 "2839 Update current FCF record "
2835 "(x%x) with new FCF record (x%x)\n",
2836 fcf_rec->fcf_indx,
2837 bf_get(lpfc_fcf_record_fcf_index,
2838 new_fcf_record));
2839 /* Choose the new FCF by random selection */
2840 __lpfc_update_fcf_record(phba, fcf_rec,
2841 new_fcf_record,
2842 addr_mode, vlan_id, 0);
2843 }
2844 }
2845 spin_unlock_irq(&phba->hbalock);
2846 goto read_next_fcf;
2847 }
2848 /*
2849 * This is the first suitable FCF record, choose this record for
2850 * initial best-fit FCF.
2851 */
2852 if (fcf_rec) {
2853 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2854 "2840 Update initial FCF candidate "
2855 "with FCF (x%x)\n",
2856 bf_get(lpfc_fcf_record_fcf_index,
2857 new_fcf_record));
2858 __lpfc_update_fcf_record(phba, fcf_rec, new_fcf_record,
2859 addr_mode, vlan_id, (boot_flag ?
2860 BOOT_ENABLE : 0));
2861 phba->fcf.fcf_flag |= FCF_AVAILABLE;
2862 /* Setup initial running random FCF selection count */
2863 phba->fcf.eligible_fcf_cnt = 1;
2864 }
2865 spin_unlock_irq(&phba->hbalock);
2866 goto read_next_fcf;
2867
2868read_next_fcf:
2869 lpfc_sli4_mbox_cmd_free(phba, mboxq);
2870 if (next_fcf_index == LPFC_FCOE_FCF_NEXT_NONE || next_fcf_index == 0) {
2871 if (phba->fcf.fcf_flag & FCF_REDISC_FOV) {
2872 /*
2873 * Case of FCF fast failover scan
2874 */
2875
2876 /*
2877 * It has not found any suitable FCF record, cancel
2878 * FCF scan inprogress, and do nothing
2879 */
2880 if (!(phba->fcf.failover_rec.flag & RECORD_VALID)) {
2881 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
2882 "2782 No suitable FCF found: "
2883 "(x%x/x%x)\n",
2884 phba->fcoe_eventtag_at_fcf_scan,
2885 bf_get(lpfc_fcf_record_fcf_index,
2886 new_fcf_record));
2887 if (test_bit(HBA_DEVLOSS_TMO,
2888 &phba->hba_flag)) {
2889 clear_bit(FCF_TS_INPROG,
2890 &phba->hba_flag);
2891 /* Unregister in-use FCF and rescan */
2892 lpfc_printf_log(phba, KERN_INFO,
2893 LOG_FIP,
2894 "2864 On devloss tmo "
2895 "unreg in-use FCF and "
2896 "rescan FCF table\n");
2897 lpfc_unregister_fcf_rescan(phba);
2898 return;
2899 }
2900 /*
2901 * Let next new FCF event trigger fast failover
2902 */
2903 clear_bit(FCF_TS_INPROG, &phba->hba_flag);
2904 return;
2905 }
2906 /*
2907 * It has found a suitable FCF record that is not
2908 * the same as in-use FCF record, unregister the
2909 * in-use FCF record, replace the in-use FCF record
2910 * with the new FCF record, mark FCF fast failover
2911 * completed, and then start register the new FCF
2912 * record.
2913 */
2914
2915 /* Unregister the current in-use FCF record */
2916 lpfc_unregister_fcf(phba);
2917
2918 /* Replace in-use record with the new record */
2919 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2920 "2842 Replace in-use FCF (x%x) "
2921 "with failover FCF (x%x)\n",
2922 phba->fcf.current_rec.fcf_indx,
2923 phba->fcf.failover_rec.fcf_indx);
2924 memcpy(&phba->fcf.current_rec,
2925 &phba->fcf.failover_rec,
2926 sizeof(struct lpfc_fcf_rec));
2927 /*
2928 * Mark the fast FCF failover rediscovery completed
2929 * and the start of the first round of the roundrobin
2930 * FCF failover.
2931 */
2932 spin_lock_irq(&phba->hbalock);
2933 phba->fcf.fcf_flag &= ~FCF_REDISC_FOV;
2934 spin_unlock_irq(&phba->hbalock);
2935 /* Register to the new FCF record */
2936 lpfc_register_fcf(phba);
2937 } else {
2938 /*
2939 * In case of transaction period to fast FCF failover,
2940 * do nothing when search to the end of the FCF table.
2941 */
2942 if ((phba->fcf.fcf_flag & FCF_REDISC_EVT) ||
2943 (phba->fcf.fcf_flag & FCF_REDISC_PEND))
2944 return;
2945
2946 if (phba->cfg_fcf_failover_policy == LPFC_FCF_FOV &&
2947 phba->fcf.fcf_flag & FCF_IN_USE) {
2948 /*
2949 * In case the current in-use FCF record no
2950 * longer existed during FCF discovery that
2951 * was not triggered by fast FCF failover
2952 * process, treat it as fast FCF failover.
2953 */
2954 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2955 "2841 In-use FCF record (x%x) "
2956 "not reported, entering fast "
2957 "FCF failover mode scanning.\n",
2958 phba->fcf.current_rec.fcf_indx);
2959 spin_lock_irq(&phba->hbalock);
2960 phba->fcf.fcf_flag |= FCF_REDISC_FOV;
2961 spin_unlock_irq(&phba->hbalock);
2962 lpfc_sli4_fcf_scan_read_fcf_rec(phba,
2963 LPFC_FCOE_FCF_GET_FIRST);
2964 return;
2965 }
2966 /* Register to the new FCF record */
2967 lpfc_register_fcf(phba);
2968 }
2969 } else
2970 lpfc_sli4_fcf_scan_read_fcf_rec(phba, next_fcf_index);
2971 return;
2972
2973out:
2974 lpfc_sli4_mbox_cmd_free(phba, mboxq);
2975 lpfc_register_fcf(phba);
2976
2977 return;
2978}
2979
2980/**
2981 * lpfc_mbx_cmpl_fcf_rr_read_fcf_rec - fcf roundrobin read_fcf mbox cmpl hdler
2982 * @phba: pointer to lpfc hba data structure.
2983 * @mboxq: pointer to mailbox object.
2984 *
2985 * This is the callback function for FLOGI failure roundrobin FCF failover
2986 * read FCF record mailbox command from the eligible FCF record bmask for
2987 * performing the failover. If the FCF read back is not valid/available, it
2988 * fails through to retrying FLOGI to the currently registered FCF again.
2989 * Otherwise, if the FCF read back is valid and available, it will set the
2990 * newly read FCF record to the failover FCF record, unregister currently
2991 * registered FCF record, copy the failover FCF record to the current
2992 * FCF record, and then register the current FCF record before proceeding
2993 * to trying FLOGI on the new failover FCF.
2994 */
2995void
2996lpfc_mbx_cmpl_fcf_rr_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
2997{
2998 struct fcf_record *new_fcf_record;
2999 uint32_t boot_flag, addr_mode;
3000 uint16_t next_fcf_index, fcf_index;
3001 uint16_t current_fcf_index;
3002 uint16_t vlan_id = LPFC_FCOE_NULL_VID;
3003 int rc;
3004
3005 /* If link state is not up, stop the roundrobin failover process */
3006 if (phba->link_state < LPFC_LINK_UP) {
3007 spin_lock_irq(&phba->hbalock);
3008 phba->fcf.fcf_flag &= ~FCF_DISCOVERY;
3009 spin_unlock_irq(&phba->hbalock);
3010 clear_bit(FCF_RR_INPROG, &phba->hba_flag);
3011 goto out;
3012 }
3013
3014 /* Parse the FCF record from the non-embedded mailbox command */
3015 new_fcf_record = lpfc_sli4_fcf_rec_mbox_parse(phba, mboxq,
3016 &next_fcf_index);
3017 if (!new_fcf_record) {
3018 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
3019 "2766 Mailbox command READ_FCF_RECORD "
3020 "failed to retrieve a FCF record. "
3021 "hba_flg x%lx fcf_flg x%x\n", phba->hba_flag,
3022 phba->fcf.fcf_flag);
3023 lpfc_unregister_fcf_rescan(phba);
3024 goto out;
3025 }
3026
3027 /* Get the needed parameters from FCF record */
3028 rc = lpfc_match_fcf_conn_list(phba, new_fcf_record, &boot_flag,
3029 &addr_mode, &vlan_id);
3030
3031 /* Log the FCF record information if turned on */
3032 lpfc_sli4_log_fcf_record_info(phba, new_fcf_record, vlan_id,
3033 next_fcf_index);
3034
3035 fcf_index = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record);
3036 if (!rc) {
3037 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
3038 "2848 Remove ineligible FCF (x%x) from "
3039 "from roundrobin bmask\n", fcf_index);
3040 /* Clear roundrobin bmask bit for ineligible FCF */
3041 lpfc_sli4_fcf_rr_index_clear(phba, fcf_index);
3042 /* Perform next round of roundrobin FCF failover */
3043 fcf_index = lpfc_sli4_fcf_rr_next_index_get(phba);
3044 rc = lpfc_sli4_fcf_rr_next_proc(phba->pport, fcf_index);
3045 if (rc)
3046 goto out;
3047 goto error_out;
3048 }
3049
3050 if (fcf_index == phba->fcf.current_rec.fcf_indx) {
3051 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
3052 "2760 Perform FLOGI roundrobin FCF failover: "
3053 "FCF (x%x) back to FCF (x%x)\n",
3054 phba->fcf.current_rec.fcf_indx, fcf_index);
3055 /* Wait 500 ms before retrying FLOGI to current FCF */
3056 msleep(500);
3057 lpfc_issue_init_vfi(phba->pport);
3058 goto out;
3059 }
3060
3061 /* Upload new FCF record to the failover FCF record */
3062 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
3063 "2834 Update current FCF (x%x) with new FCF (x%x)\n",
3064 phba->fcf.failover_rec.fcf_indx, fcf_index);
3065 spin_lock_irq(&phba->hbalock);
3066 __lpfc_update_fcf_record(phba, &phba->fcf.failover_rec,
3067 new_fcf_record, addr_mode, vlan_id,
3068 (boot_flag ? BOOT_ENABLE : 0));
3069 spin_unlock_irq(&phba->hbalock);
3070
3071 current_fcf_index = phba->fcf.current_rec.fcf_indx;
3072
3073 /* Unregister the current in-use FCF record */
3074 lpfc_unregister_fcf(phba);
3075
3076 /* Replace in-use record with the new record */
3077 memcpy(&phba->fcf.current_rec, &phba->fcf.failover_rec,
3078 sizeof(struct lpfc_fcf_rec));
3079
3080 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
3081 "2783 Perform FLOGI roundrobin FCF failover: FCF "
3082 "(x%x) to FCF (x%x)\n", current_fcf_index, fcf_index);
3083
3084error_out:
3085 lpfc_register_fcf(phba);
3086out:
3087 lpfc_sli4_mbox_cmd_free(phba, mboxq);
3088}
3089
3090/**
3091 * lpfc_mbx_cmpl_read_fcf_rec - read fcf completion handler.
3092 * @phba: pointer to lpfc hba data structure.
3093 * @mboxq: pointer to mailbox object.
3094 *
3095 * This is the callback function of read FCF record mailbox command for
3096 * updating the eligible FCF bmask for FLOGI failure roundrobin FCF
3097 * failover when a new FCF event happened. If the FCF read back is
3098 * valid/available and it passes the connection list check, it updates
3099 * the bmask for the eligible FCF record for roundrobin failover.
3100 */
3101void
3102lpfc_mbx_cmpl_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
3103{
3104 struct fcf_record *new_fcf_record;
3105 uint32_t boot_flag, addr_mode;
3106 uint16_t fcf_index, next_fcf_index;
3107 uint16_t vlan_id = LPFC_FCOE_NULL_VID;
3108 int rc;
3109
3110 /* If link state is not up, no need to proceed */
3111 if (phba->link_state < LPFC_LINK_UP)
3112 goto out;
3113
3114 /* If FCF discovery period is over, no need to proceed */
3115 if (!(phba->fcf.fcf_flag & FCF_DISCOVERY))
3116 goto out;
3117
3118 /* Parse the FCF record from the non-embedded mailbox command */
3119 new_fcf_record = lpfc_sli4_fcf_rec_mbox_parse(phba, mboxq,
3120 &next_fcf_index);
3121 if (!new_fcf_record) {
3122 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
3123 "2767 Mailbox command READ_FCF_RECORD "
3124 "failed to retrieve a FCF record.\n");
3125 goto out;
3126 }
3127
3128 /* Check the connection list for eligibility */
3129 rc = lpfc_match_fcf_conn_list(phba, new_fcf_record, &boot_flag,
3130 &addr_mode, &vlan_id);
3131
3132 /* Log the FCF record information if turned on */
3133 lpfc_sli4_log_fcf_record_info(phba, new_fcf_record, vlan_id,
3134 next_fcf_index);
3135
3136 if (!rc)
3137 goto out;
3138
3139 /* Update the eligible FCF record index bmask */
3140 fcf_index = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record);
3141
3142 rc = lpfc_sli4_fcf_pri_list_add(phba, fcf_index, new_fcf_record);
3143
3144out:
3145 lpfc_sli4_mbox_cmd_free(phba, mboxq);
3146}
3147
3148/**
3149 * lpfc_init_vfi_cmpl - Completion handler for init_vfi mbox command.
3150 * @phba: pointer to lpfc hba data structure.
3151 * @mboxq: pointer to mailbox data structure.
3152 *
3153 * This function handles completion of init vfi mailbox command.
3154 */
3155static void
3156lpfc_init_vfi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
3157{
3158 struct lpfc_vport *vport = mboxq->vport;
3159
3160 /*
3161 * VFI not supported on interface type 0, just do the flogi
3162 * Also continue if the VFI is in use - just use the same one.
3163 */
3164 if (mboxq->u.mb.mbxStatus &&
3165 (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) !=
3166 LPFC_SLI_INTF_IF_TYPE_0) &&
3167 mboxq->u.mb.mbxStatus != MBX_VFI_IN_USE) {
3168 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
3169 "2891 Init VFI mailbox failed 0x%x\n",
3170 mboxq->u.mb.mbxStatus);
3171 mempool_free(mboxq, phba->mbox_mem_pool);
3172 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
3173 return;
3174 }
3175
3176 if (!lpfc_initial_flogi(vport)) {
3177 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX | LOG_ELS,
3178 "2345 Can't issue initial FLOGI\n");
3179 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
3180 }
3181 mempool_free(mboxq, phba->mbox_mem_pool);
3182 return;
3183}
3184
3185/**
3186 * lpfc_issue_init_vfi - Issue init_vfi mailbox command.
3187 * @vport: pointer to lpfc_vport data structure.
3188 *
3189 * This function issue a init_vfi mailbox command to initialize the VFI and
3190 * VPI for the physical port.
3191 */
3192void
3193lpfc_issue_init_vfi(struct lpfc_vport *vport)
3194{
3195 LPFC_MBOXQ_t *mboxq;
3196 int rc;
3197 struct lpfc_hba *phba = vport->phba;
3198
3199 mboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
3200 if (!mboxq) {
3201 lpfc_printf_vlog(vport, KERN_ERR,
3202 LOG_TRACE_EVENT, "2892 Failed to allocate "
3203 "init_vfi mailbox\n");
3204 return;
3205 }
3206 lpfc_init_vfi(mboxq, vport);
3207 mboxq->mbox_cmpl = lpfc_init_vfi_cmpl;
3208 rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_NOWAIT);
3209 if (rc == MBX_NOT_FINISHED) {
3210 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
3211 "2893 Failed to issue init_vfi mailbox\n");
3212 mempool_free(mboxq, vport->phba->mbox_mem_pool);
3213 }
3214}
3215
3216/**
3217 * lpfc_init_vpi_cmpl - Completion handler for init_vpi mbox command.
3218 * @phba: pointer to lpfc hba data structure.
3219 * @mboxq: pointer to mailbox data structure.
3220 *
3221 * This function handles completion of init vpi mailbox command.
3222 */
3223void
3224lpfc_init_vpi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
3225{
3226 struct lpfc_vport *vport = mboxq->vport;
3227 struct lpfc_nodelist *ndlp;
3228
3229 if (mboxq->u.mb.mbxStatus) {
3230 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
3231 "2609 Init VPI mailbox failed 0x%x\n",
3232 mboxq->u.mb.mbxStatus);
3233 mempool_free(mboxq, phba->mbox_mem_pool);
3234 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
3235 return;
3236 }
3237 clear_bit(FC_VPORT_NEEDS_INIT_VPI, &vport->fc_flag);
3238
3239 /* If this port is physical port or FDISC is done, do reg_vpi */
3240 if ((phba->pport == vport) || (vport->port_state == LPFC_FDISC)) {
3241 ndlp = lpfc_findnode_did(vport, Fabric_DID);
3242 if (!ndlp)
3243 lpfc_printf_vlog(vport, KERN_ERR,
3244 LOG_TRACE_EVENT,
3245 "2731 Cannot find fabric "
3246 "controller node\n");
3247 else
3248 lpfc_register_new_vport(phba, vport, ndlp);
3249 mempool_free(mboxq, phba->mbox_mem_pool);
3250 return;
3251 }
3252
3253 if (phba->link_flag & LS_NPIV_FAB_SUPPORTED) {
3254 if (!lpfc_initial_fdisc(vport)) {
3255 lpfc_printf_vlog(vport, KERN_WARNING,
3256 LOG_MBOX | LOG_ELS,
3257 "2346 Can't issue initial FDISC\n");
3258 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
3259 }
3260 }
3261 else {
3262 lpfc_vport_set_state(vport, FC_VPORT_NO_FABRIC_SUPP);
3263 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
3264 "2606 No NPIV Fabric support\n");
3265 }
3266 mempool_free(mboxq, phba->mbox_mem_pool);
3267 return;
3268}
3269
3270/**
3271 * lpfc_issue_init_vpi - Issue init_vpi mailbox command.
3272 * @vport: pointer to lpfc_vport data structure.
3273 *
3274 * This function issue a init_vpi mailbox command to initialize
3275 * VPI for the vport.
3276 */
3277void
3278lpfc_issue_init_vpi(struct lpfc_vport *vport)
3279{
3280 LPFC_MBOXQ_t *mboxq;
3281 int rc, vpi;
3282
3283 if ((vport->port_type != LPFC_PHYSICAL_PORT) && (!vport->vpi)) {
3284 vpi = lpfc_alloc_vpi(vport->phba);
3285 if (!vpi) {
3286 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
3287 "3303 Failed to obtain vport vpi\n");
3288 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
3289 return;
3290 }
3291 vport->vpi = vpi;
3292 }
3293
3294 mboxq = mempool_alloc(vport->phba->mbox_mem_pool, GFP_KERNEL);
3295 if (!mboxq) {
3296 lpfc_printf_vlog(vport, KERN_ERR,
3297 LOG_TRACE_EVENT, "2607 Failed to allocate "
3298 "init_vpi mailbox\n");
3299 return;
3300 }
3301 lpfc_init_vpi(vport->phba, mboxq, vport->vpi);
3302 mboxq->vport = vport;
3303 mboxq->mbox_cmpl = lpfc_init_vpi_cmpl;
3304 rc = lpfc_sli_issue_mbox(vport->phba, mboxq, MBX_NOWAIT);
3305 if (rc == MBX_NOT_FINISHED) {
3306 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
3307 "2608 Failed to issue init_vpi mailbox\n");
3308 mempool_free(mboxq, vport->phba->mbox_mem_pool);
3309 }
3310}
3311
3312/**
3313 * lpfc_start_fdiscs - send fdiscs for each vports on this port.
3314 * @phba: pointer to lpfc hba data structure.
3315 *
3316 * This function loops through the list of vports on the @phba and issues an
3317 * FDISC if possible.
3318 */
3319void
3320lpfc_start_fdiscs(struct lpfc_hba *phba)
3321{
3322 struct lpfc_vport **vports;
3323 int i;
3324
3325 vports = lpfc_create_vport_work_array(phba);
3326 if (vports != NULL) {
3327 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
3328 if (vports[i]->port_type == LPFC_PHYSICAL_PORT)
3329 continue;
3330 /* There are no vpi for this vport */
3331 if (vports[i]->vpi > phba->max_vpi) {
3332 lpfc_vport_set_state(vports[i],
3333 FC_VPORT_FAILED);
3334 continue;
3335 }
3336 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
3337 lpfc_vport_set_state(vports[i],
3338 FC_VPORT_LINKDOWN);
3339 continue;
3340 }
3341 if (test_bit(FC_VPORT_NEEDS_INIT_VPI,
3342 &vports[i]->fc_flag)) {
3343 lpfc_issue_init_vpi(vports[i]);
3344 continue;
3345 }
3346 if (phba->link_flag & LS_NPIV_FAB_SUPPORTED)
3347 lpfc_initial_fdisc(vports[i]);
3348 else {
3349 lpfc_vport_set_state(vports[i],
3350 FC_VPORT_NO_FABRIC_SUPP);
3351 lpfc_printf_vlog(vports[i], KERN_ERR,
3352 LOG_TRACE_EVENT,
3353 "0259 No NPIV "
3354 "Fabric support\n");
3355 }
3356 }
3357 }
3358 lpfc_destroy_vport_work_array(phba, vports);
3359}
3360
3361void
3362lpfc_mbx_cmpl_reg_vfi(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
3363{
3364 struct lpfc_vport *vport = mboxq->vport;
3365 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3366
3367 /*
3368 * VFI not supported for interface type 0, so ignore any mailbox
3369 * error (except VFI in use) and continue with the discovery.
3370 */
3371 if (mboxq->u.mb.mbxStatus &&
3372 (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) !=
3373 LPFC_SLI_INTF_IF_TYPE_0) &&
3374 mboxq->u.mb.mbxStatus != MBX_VFI_IN_USE) {
3375 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
3376 "2018 REG_VFI mbxStatus error x%x "
3377 "HBA state x%x\n",
3378 mboxq->u.mb.mbxStatus, vport->port_state);
3379 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
3380 /* FLOGI failed, use loop map to make discovery list */
3381 lpfc_disc_list_loopmap(vport);
3382 /* Start discovery */
3383 lpfc_disc_start(vport);
3384 goto out_free_mem;
3385 }
3386 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
3387 goto out_free_mem;
3388 }
3389
3390 /* If the VFI is already registered, there is nothing else to do
3391 * Unless this was a VFI update and we are in PT2PT mode, then
3392 * we should drop through to set the port state to ready.
3393 */
3394 if (test_bit(FC_VFI_REGISTERED, &vport->fc_flag))
3395 if (!(phba->sli_rev == LPFC_SLI_REV4 &&
3396 test_bit(FC_PT2PT, &vport->fc_flag)))
3397 goto out_free_mem;
3398
3399 /* The VPI is implicitly registered when the VFI is registered */
3400 set_bit(FC_VFI_REGISTERED, &vport->fc_flag);
3401 clear_bit(FC_VPORT_NEEDS_REG_VPI, &vport->fc_flag);
3402 clear_bit(FC_VPORT_NEEDS_INIT_VPI, &vport->fc_flag);
3403 spin_lock_irq(shost->host_lock);
3404 vport->vpi_state |= LPFC_VPI_REGISTERED;
3405 spin_unlock_irq(shost->host_lock);
3406
3407 /* In case SLI4 FC loopback test, we are ready */
3408 if ((phba->sli_rev == LPFC_SLI_REV4) &&
3409 (phba->link_flag & LS_LOOPBACK_MODE)) {
3410 phba->link_state = LPFC_HBA_READY;
3411 goto out_free_mem;
3412 }
3413
3414 lpfc_printf_vlog(vport, KERN_INFO, LOG_SLI,
3415 "3313 cmpl reg vfi port_state:%x fc_flag:%lx "
3416 "myDid:%x alpacnt:%d LinkState:%x topology:%x\n",
3417 vport->port_state, vport->fc_flag, vport->fc_myDID,
3418 vport->phba->alpa_map[0],
3419 phba->link_state, phba->fc_topology);
3420
3421 if (vport->port_state == LPFC_FABRIC_CFG_LINK) {
3422 /*
3423 * For private loop or for NPort pt2pt,
3424 * just start discovery and we are done.
3425 */
3426 if (test_bit(FC_PT2PT, &vport->fc_flag) ||
3427 (phba->fc_topology == LPFC_TOPOLOGY_LOOP &&
3428 !test_bit(FC_PUBLIC_LOOP, &vport->fc_flag))) {
3429
3430 /* Use loop map to make discovery list */
3431 lpfc_disc_list_loopmap(vport);
3432 /* Start discovery */
3433 if (test_bit(FC_PT2PT, &vport->fc_flag))
3434 vport->port_state = LPFC_VPORT_READY;
3435 else
3436 lpfc_disc_start(vport);
3437 } else {
3438 lpfc_start_fdiscs(phba);
3439 lpfc_do_scr_ns_plogi(phba, vport);
3440 }
3441 }
3442
3443out_free_mem:
3444 lpfc_mbox_rsrc_cleanup(phba, mboxq, MBOX_THD_UNLOCKED);
3445}
3446
3447static void
3448lpfc_mbx_cmpl_read_sparam(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
3449{
3450 MAILBOX_t *mb = &pmb->u.mb;
3451 struct lpfc_dmabuf *mp = pmb->ctx_buf;
3452 struct lpfc_vport *vport = pmb->vport;
3453 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3454 struct serv_parm *sp = &vport->fc_sparam;
3455 uint32_t ed_tov;
3456
3457 /* Check for error */
3458 if (mb->mbxStatus) {
3459 /* READ_SPARAM mbox error <mbxStatus> state <hba_state> */
3460 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
3461 "0319 READ_SPARAM mbxStatus error x%x "
3462 "hba state x%x>\n",
3463 mb->mbxStatus, vport->port_state);
3464 lpfc_linkdown(phba);
3465 goto out;
3466 }
3467
3468 memcpy((uint8_t *) &vport->fc_sparam, (uint8_t *) mp->virt,
3469 sizeof (struct serv_parm));
3470
3471 ed_tov = be32_to_cpu(sp->cmn.e_d_tov);
3472 if (sp->cmn.edtovResolution) /* E_D_TOV ticks are in nanoseconds */
3473 ed_tov = (ed_tov + 999999) / 1000000;
3474
3475 phba->fc_edtov = ed_tov;
3476 phba->fc_ratov = (2 * ed_tov) / 1000;
3477 if (phba->fc_ratov < FF_DEF_RATOV) {
3478 /* RA_TOV should be atleast 10sec for initial flogi */
3479 phba->fc_ratov = FF_DEF_RATOV;
3480 }
3481
3482 lpfc_update_vport_wwn(vport);
3483 fc_host_port_name(shost) = wwn_to_u64(vport->fc_portname.u.wwn);
3484 if (vport->port_type == LPFC_PHYSICAL_PORT) {
3485 memcpy(&phba->wwnn, &vport->fc_nodename, sizeof(phba->wwnn));
3486 memcpy(&phba->wwpn, &vport->fc_portname, sizeof(phba->wwnn));
3487 }
3488
3489 lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED);
3490
3491 /* Check if sending the FLOGI is being deferred to after we get
3492 * up to date CSPs from MBX_READ_SPARAM.
3493 */
3494 if (test_bit(HBA_DEFER_FLOGI, &phba->hba_flag)) {
3495 lpfc_initial_flogi(vport);
3496 clear_bit(HBA_DEFER_FLOGI, &phba->hba_flag);
3497 }
3498 return;
3499
3500out:
3501 lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED);
3502 lpfc_issue_clear_la(phba, vport);
3503}
3504
3505static void
3506lpfc_mbx_process_link_up(struct lpfc_hba *phba, struct lpfc_mbx_read_top *la)
3507{
3508 struct lpfc_vport *vport = phba->pport;
3509 LPFC_MBOXQ_t *sparam_mbox, *cfglink_mbox = NULL;
3510 int i;
3511 int rc;
3512 struct fcf_record *fcf_record;
3513 unsigned long iflags;
3514
3515 spin_lock_irqsave(&phba->hbalock, iflags);
3516 phba->fc_linkspeed = bf_get(lpfc_mbx_read_top_link_spd, la);
3517
3518 if (!test_bit(HBA_FCOE_MODE, &phba->hba_flag)) {
3519 switch (bf_get(lpfc_mbx_read_top_link_spd, la)) {
3520 case LPFC_LINK_SPEED_1GHZ:
3521 case LPFC_LINK_SPEED_2GHZ:
3522 case LPFC_LINK_SPEED_4GHZ:
3523 case LPFC_LINK_SPEED_8GHZ:
3524 case LPFC_LINK_SPEED_10GHZ:
3525 case LPFC_LINK_SPEED_16GHZ:
3526 case LPFC_LINK_SPEED_32GHZ:
3527 case LPFC_LINK_SPEED_64GHZ:
3528 case LPFC_LINK_SPEED_128GHZ:
3529 case LPFC_LINK_SPEED_256GHZ:
3530 break;
3531 default:
3532 phba->fc_linkspeed = LPFC_LINK_SPEED_UNKNOWN;
3533 break;
3534 }
3535 }
3536
3537 if (phba->fc_topology &&
3538 phba->fc_topology != bf_get(lpfc_mbx_read_top_topology, la)) {
3539 lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
3540 "3314 Topology changed was 0x%x is 0x%x\n",
3541 phba->fc_topology,
3542 bf_get(lpfc_mbx_read_top_topology, la));
3543 phba->fc_topology_changed = 1;
3544 }
3545
3546 phba->fc_topology = bf_get(lpfc_mbx_read_top_topology, la);
3547 phba->link_flag &= ~(LS_NPIV_FAB_SUPPORTED | LS_CT_VEN_RPA);
3548
3549 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
3550 phba->sli3_options &= ~LPFC_SLI3_NPIV_ENABLED;
3551
3552 /* if npiv is enabled and this adapter supports npiv log
3553 * a message that npiv is not supported in this topology
3554 */
3555 if (phba->cfg_enable_npiv && phba->max_vpi)
3556 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
3557 "1309 Link Up Event npiv not supported in loop "
3558 "topology\n");
3559 /* Get Loop Map information */
3560 if (bf_get(lpfc_mbx_read_top_il, la))
3561 set_bit(FC_LBIT, &vport->fc_flag);
3562
3563 vport->fc_myDID = bf_get(lpfc_mbx_read_top_alpa_granted, la);
3564 i = la->lilpBde64.tus.f.bdeSize;
3565
3566 if (i == 0) {
3567 phba->alpa_map[0] = 0;
3568 } else {
3569 if (vport->cfg_log_verbose & LOG_LINK_EVENT) {
3570 int numalpa, j, k;
3571 union {
3572 uint8_t pamap[16];
3573 struct {
3574 uint32_t wd1;
3575 uint32_t wd2;
3576 uint32_t wd3;
3577 uint32_t wd4;
3578 } pa;
3579 } un;
3580 numalpa = phba->alpa_map[0];
3581 j = 0;
3582 while (j < numalpa) {
3583 memset(un.pamap, 0, 16);
3584 for (k = 1; j < numalpa; k++) {
3585 un.pamap[k - 1] =
3586 phba->alpa_map[j + 1];
3587 j++;
3588 if (k == 16)
3589 break;
3590 }
3591 /* Link Up Event ALPA map */
3592 lpfc_printf_log(phba,
3593 KERN_WARNING,
3594 LOG_LINK_EVENT,
3595 "1304 Link Up Event "
3596 "ALPA map Data: x%x "
3597 "x%x x%x x%x\n",
3598 un.pa.wd1, un.pa.wd2,
3599 un.pa.wd3, un.pa.wd4);
3600 }
3601 }
3602 }
3603 } else {
3604 if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)) {
3605 if (phba->max_vpi && phba->cfg_enable_npiv &&
3606 (phba->sli_rev >= LPFC_SLI_REV3))
3607 phba->sli3_options |= LPFC_SLI3_NPIV_ENABLED;
3608 }
3609 vport->fc_myDID = phba->fc_pref_DID;
3610 set_bit(FC_LBIT, &vport->fc_flag);
3611 }
3612 spin_unlock_irqrestore(&phba->hbalock, iflags);
3613
3614 lpfc_linkup(phba);
3615 sparam_mbox = NULL;
3616
3617 sparam_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
3618 if (!sparam_mbox)
3619 goto out;
3620
3621 rc = lpfc_read_sparam(phba, sparam_mbox, 0);
3622 if (rc) {
3623 mempool_free(sparam_mbox, phba->mbox_mem_pool);
3624 goto out;
3625 }
3626 sparam_mbox->vport = vport;
3627 sparam_mbox->mbox_cmpl = lpfc_mbx_cmpl_read_sparam;
3628 rc = lpfc_sli_issue_mbox(phba, sparam_mbox, MBX_NOWAIT);
3629 if (rc == MBX_NOT_FINISHED) {
3630 lpfc_mbox_rsrc_cleanup(phba, sparam_mbox, MBOX_THD_UNLOCKED);
3631 goto out;
3632 }
3633
3634 if (!test_bit(HBA_FCOE_MODE, &phba->hba_flag)) {
3635 cfglink_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
3636 if (!cfglink_mbox)
3637 goto out;
3638 vport->port_state = LPFC_LOCAL_CFG_LINK;
3639 lpfc_config_link(phba, cfglink_mbox);
3640 cfglink_mbox->vport = vport;
3641 cfglink_mbox->mbox_cmpl = lpfc_mbx_cmpl_local_config_link;
3642 rc = lpfc_sli_issue_mbox(phba, cfglink_mbox, MBX_NOWAIT);
3643 if (rc == MBX_NOT_FINISHED) {
3644 mempool_free(cfglink_mbox, phba->mbox_mem_pool);
3645 goto out;
3646 }
3647 } else {
3648 vport->port_state = LPFC_VPORT_UNKNOWN;
3649 /*
3650 * Add the driver's default FCF record at FCF index 0 now. This
3651 * is phase 1 implementation that support FCF index 0 and driver
3652 * defaults.
3653 */
3654 if (!test_bit(HBA_FIP_SUPPORT, &phba->hba_flag)) {
3655 fcf_record = kzalloc_obj(struct fcf_record);
3656 if (unlikely(!fcf_record)) {
3657 lpfc_printf_log(phba, KERN_ERR,
3658 LOG_TRACE_EVENT,
3659 "2554 Could not allocate memory for "
3660 "fcf record\n");
3661 rc = -ENODEV;
3662 goto out;
3663 }
3664
3665 lpfc_sli4_build_dflt_fcf_record(phba, fcf_record,
3666 LPFC_FCOE_FCF_DEF_INDEX);
3667 rc = lpfc_sli4_add_fcf_record(phba, fcf_record);
3668 if (unlikely(rc)) {
3669 lpfc_printf_log(phba, KERN_ERR,
3670 LOG_TRACE_EVENT,
3671 "2013 Could not manually add FCF "
3672 "record 0, status %d\n", rc);
3673 rc = -ENODEV;
3674 kfree(fcf_record);
3675 goto out;
3676 }
3677 kfree(fcf_record);
3678 }
3679 /*
3680 * The driver is expected to do FIP/FCF. Call the port
3681 * and get the FCF Table.
3682 */
3683 if (test_bit(FCF_TS_INPROG, &phba->hba_flag))
3684 return;
3685 /* This is the initial FCF discovery scan */
3686 spin_lock_irqsave(&phba->hbalock, iflags);
3687 phba->fcf.fcf_flag |= FCF_INIT_DISC;
3688 spin_unlock_irqrestore(&phba->hbalock, iflags);
3689 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY,
3690 "2778 Start FCF table scan at linkup\n");
3691 rc = lpfc_sli4_fcf_scan_read_fcf_rec(phba,
3692 LPFC_FCOE_FCF_GET_FIRST);
3693 if (rc) {
3694 spin_lock_irqsave(&phba->hbalock, iflags);
3695 phba->fcf.fcf_flag &= ~FCF_INIT_DISC;
3696 spin_unlock_irqrestore(&phba->hbalock, iflags);
3697 goto out;
3698 }
3699 /* Reset FCF roundrobin bmask for new discovery */
3700 lpfc_sli4_clear_fcf_rr_bmask(phba);
3701 }
3702
3703 /* Prepare for LINK up registrations */
3704 memset(phba->os_host_name, 0, sizeof(phba->os_host_name));
3705 scnprintf(phba->os_host_name, sizeof(phba->os_host_name), "%s",
3706 init_utsname()->nodename);
3707 return;
3708out:
3709 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
3710 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
3711 "0263 Discovery Mailbox error: state: 0x%x : x%px x%px\n",
3712 vport->port_state, sparam_mbox, cfglink_mbox);
3713 lpfc_issue_clear_la(phba, vport);
3714 return;
3715}
3716
3717static void
3718lpfc_enable_la(struct lpfc_hba *phba)
3719{
3720 uint32_t control;
3721 struct lpfc_sli *psli = &phba->sli;
3722 spin_lock_irq(&phba->hbalock);
3723 psli->sli_flag |= LPFC_PROCESS_LA;
3724 if (phba->sli_rev <= LPFC_SLI_REV3) {
3725 control = readl(phba->HCregaddr);
3726 control |= HC_LAINT_ENA;
3727 writel(control, phba->HCregaddr);
3728 readl(phba->HCregaddr); /* flush */
3729 }
3730 spin_unlock_irq(&phba->hbalock);
3731}
3732
3733static void
3734lpfc_mbx_issue_link_down(struct lpfc_hba *phba)
3735{
3736 lpfc_linkdown(phba);
3737 lpfc_enable_la(phba);
3738 lpfc_unregister_unused_fcf(phba);
3739 /* turn on Link Attention interrupts - no CLEAR_LA needed */
3740}
3741
3742
3743/*
3744 * This routine handles processing a READ_TOPOLOGY mailbox
3745 * command upon completion. It is setup in the LPFC_MBOXQ
3746 * as the completion routine when the command is
3747 * handed off to the SLI layer. SLI4 only.
3748 */
3749void
3750lpfc_mbx_cmpl_read_topology(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
3751{
3752 struct lpfc_vport *vport = pmb->vport;
3753 struct lpfc_mbx_read_top *la;
3754 struct lpfc_sli_ring *pring;
3755 MAILBOX_t *mb = &pmb->u.mb;
3756 struct lpfc_dmabuf *mp = pmb->ctx_buf;
3757 uint8_t attn_type;
3758
3759 /* Unblock ELS traffic */
3760 pring = lpfc_phba_elsring(phba);
3761 if (pring)
3762 pring->flag &= ~LPFC_STOP_IOCB_EVENT;
3763
3764 /* Check for error */
3765 if (mb->mbxStatus) {
3766 lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT,
3767 "1307 READ_LA mbox error x%x state x%x\n",
3768 mb->mbxStatus, vport->port_state);
3769 lpfc_mbx_issue_link_down(phba);
3770 phba->link_state = LPFC_HBA_ERROR;
3771 goto lpfc_mbx_cmpl_read_topology_free_mbuf;
3772 }
3773
3774 la = (struct lpfc_mbx_read_top *) &pmb->u.mb.un.varReadTop;
3775 attn_type = bf_get(lpfc_mbx_read_top_att_type, la);
3776
3777 memcpy(&phba->alpa_map[0], mp->virt, 128);
3778
3779 if (bf_get(lpfc_mbx_read_top_pb, la))
3780 set_bit(FC_BYPASSED_MODE, &vport->fc_flag);
3781 else
3782 clear_bit(FC_BYPASSED_MODE, &vport->fc_flag);
3783
3784 if (phba->fc_eventTag <= la->eventTag) {
3785 phba->fc_stat.LinkMultiEvent++;
3786 if (attn_type == LPFC_ATT_LINK_UP)
3787 if (phba->fc_eventTag != 0)
3788 lpfc_linkdown(phba);
3789 }
3790
3791 phba->fc_eventTag = la->eventTag;
3792 phba->link_events++;
3793 if (attn_type == LPFC_ATT_LINK_UP) {
3794 phba->fc_stat.LinkUp++;
3795 if (phba->link_flag & LS_LOOPBACK_MODE) {
3796 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
3797 "1306 Link Up Event in loop back mode "
3798 "x%x received Data: x%x x%x x%x x%x\n",
3799 la->eventTag, phba->fc_eventTag,
3800 bf_get(lpfc_mbx_read_top_alpa_granted,
3801 la),
3802 bf_get(lpfc_mbx_read_top_link_spd, la),
3803 phba->alpa_map[0]);
3804 } else {
3805 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
3806 "1303 Link Up Event x%x received "
3807 "Data: x%x x%x x%x x%x x%x\n",
3808 la->eventTag, phba->fc_eventTag,
3809 bf_get(lpfc_mbx_read_top_alpa_granted,
3810 la),
3811 bf_get(lpfc_mbx_read_top_link_spd, la),
3812 phba->alpa_map[0],
3813 bf_get(lpfc_mbx_read_top_fa, la));
3814 }
3815 lpfc_mbx_process_link_up(phba, la);
3816
3817 if (phba->cmf_active_mode != LPFC_CFG_OFF)
3818 lpfc_cmf_signal_init(phba);
3819
3820 if (phba->lmt & (LMT_64Gb | LMT_128Gb))
3821 lpfc_read_lds_params(phba);
3822
3823 } else if (attn_type == LPFC_ATT_LINK_DOWN ||
3824 attn_type == LPFC_ATT_UNEXP_WWPN) {
3825 phba->fc_stat.LinkDown++;
3826 if (phba->link_flag & LS_LOOPBACK_MODE)
3827 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
3828 "1308 Link Down Event in loop back mode "
3829 "x%x received "
3830 "Data: x%x x%x x%lx\n",
3831 la->eventTag, phba->fc_eventTag,
3832 phba->pport->port_state, vport->fc_flag);
3833 else if (attn_type == LPFC_ATT_UNEXP_WWPN)
3834 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
3835 "1313 Link Down Unexpected FA WWPN Event x%x "
3836 "received Data: x%x x%x x%lx x%x\n",
3837 la->eventTag, phba->fc_eventTag,
3838 phba->pport->port_state, vport->fc_flag,
3839 bf_get(lpfc_mbx_read_top_fa, la));
3840 else
3841 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
3842 "1305 Link Down Event x%x received "
3843 "Data: x%x x%x x%lx x%x\n",
3844 la->eventTag, phba->fc_eventTag,
3845 phba->pport->port_state, vport->fc_flag,
3846 bf_get(lpfc_mbx_read_top_fa, la));
3847 lpfc_mbx_issue_link_down(phba);
3848 }
3849
3850 if ((phba->sli_rev < LPFC_SLI_REV4) &&
3851 bf_get(lpfc_mbx_read_top_fa, la))
3852 lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT,
3853 "1311 fa %d\n",
3854 bf_get(lpfc_mbx_read_top_fa, la));
3855
3856lpfc_mbx_cmpl_read_topology_free_mbuf:
3857 lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED);
3858}
3859
3860/*
3861 * This routine handles processing a REG_LOGIN mailbox
3862 * command upon completion. It is setup in the LPFC_MBOXQ
3863 * as the completion routine when the command is
3864 * handed off to the SLI layer.
3865 */
3866void
3867lpfc_mbx_cmpl_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
3868{
3869 struct lpfc_vport *vport = pmb->vport;
3870 struct lpfc_dmabuf *mp = pmb->ctx_buf;
3871 struct lpfc_nodelist *ndlp = pmb->ctx_ndlp;
3872
3873 /* The driver calls the state machine with the pmb pointer
3874 * but wants to make sure a stale ctx_buf isn't acted on.
3875 * The ctx_buf is restored later and cleaned up.
3876 */
3877 pmb->ctx_buf = NULL;
3878 pmb->ctx_ndlp = NULL;
3879
3880 lpfc_printf_vlog(vport, KERN_INFO, LOG_SLI | LOG_NODE | LOG_DISCOVERY,
3881 "0002 rpi:%x DID:%x flg:%lx %d x%px\n",
3882 ndlp->nlp_rpi, ndlp->nlp_DID, ndlp->nlp_flag,
3883 kref_read(&ndlp->kref),
3884 ndlp);
3885 clear_bit(NLP_REG_LOGIN_SEND, &ndlp->nlp_flag);
3886
3887 if (test_bit(NLP_IGNR_REG_CMPL, &ndlp->nlp_flag) ||
3888 ndlp->nlp_state != NLP_STE_REG_LOGIN_ISSUE) {
3889 /* We rcvd a rscn after issuing this
3890 * mbox reg login, we may have cycled
3891 * back through the state and be
3892 * back at reg login state so this
3893 * mbox needs to be ignored becase
3894 * there is another reg login in
3895 * process.
3896 */
3897 clear_bit(NLP_IGNR_REG_CMPL, &ndlp->nlp_flag);
3898
3899 /*
3900 * We cannot leave the RPI registered because
3901 * if we go thru discovery again for this ndlp
3902 * a subsequent REG_RPI will fail.
3903 */
3904 set_bit(NLP_RPI_REGISTERED, &ndlp->nlp_flag);
3905 lpfc_unreg_rpi(vport, ndlp);
3906 }
3907
3908 /* Call state machine */
3909 lpfc_disc_state_machine(vport, ndlp, pmb, NLP_EVT_CMPL_REG_LOGIN);
3910 pmb->ctx_buf = mp;
3911 lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED);
3912
3913 /* decrement the node reference count held for this callback
3914 * function.
3915 */
3916 lpfc_nlp_put(ndlp);
3917
3918 return;
3919}
3920
3921static void
3922lpfc_mbx_cmpl_unreg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
3923{
3924 MAILBOX_t *mb = &pmb->u.mb;
3925 struct lpfc_vport *vport = pmb->vport;
3926 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3927
3928 switch (mb->mbxStatus) {
3929 case 0x0011:
3930 case 0x0020:
3931 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
3932 "0911 cmpl_unreg_vpi, mb status = 0x%x\n",
3933 mb->mbxStatus);
3934 break;
3935 /* If VPI is busy, reset the HBA */
3936 case 0x9700:
3937 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
3938 "2798 Unreg_vpi failed vpi 0x%x, mb status = 0x%x\n",
3939 vport->vpi, mb->mbxStatus);
3940 if (!test_bit(FC_UNLOADING, &phba->pport->load_flag))
3941 lpfc_workq_post_event(phba, NULL, NULL,
3942 LPFC_EVT_RESET_HBA);
3943 }
3944
3945 set_bit(FC_VPORT_NEEDS_REG_VPI, &vport->fc_flag);
3946 spin_lock_irq(shost->host_lock);
3947 vport->vpi_state &= ~LPFC_VPI_REGISTERED;
3948 spin_unlock_irq(shost->host_lock);
3949 mempool_free(pmb, phba->mbox_mem_pool);
3950 lpfc_cleanup_vports_rrqs(vport, NULL);
3951 /*
3952 * This shost reference might have been taken at the beginning of
3953 * lpfc_vport_delete()
3954 */
3955 if (test_bit(FC_UNLOADING, &vport->load_flag) && vport != phba->pport)
3956 scsi_host_put(shost);
3957}
3958
3959int
3960lpfc_mbx_unreg_vpi(struct lpfc_vport *vport)
3961{
3962 struct lpfc_hba *phba = vport->phba;
3963 LPFC_MBOXQ_t *mbox;
3964 int rc;
3965
3966 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
3967 if (!mbox)
3968 return 1;
3969
3970 lpfc_unreg_vpi(phba, vport->vpi, mbox);
3971 mbox->vport = vport;
3972 mbox->mbox_cmpl = lpfc_mbx_cmpl_unreg_vpi;
3973 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
3974 if (rc == MBX_NOT_FINISHED) {
3975 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
3976 "1800 Could not issue unreg_vpi\n");
3977 mempool_free(mbox, phba->mbox_mem_pool);
3978 return rc;
3979 }
3980 return 0;
3981}
3982
3983static void
3984lpfc_mbx_cmpl_reg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
3985{
3986 struct lpfc_vport *vport = pmb->vport;
3987 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3988 MAILBOX_t *mb = &pmb->u.mb;
3989
3990 switch (mb->mbxStatus) {
3991 case 0x0011:
3992 case 0x9601:
3993 case 0x9602:
3994 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
3995 "0912 cmpl_reg_vpi, mb status = 0x%x\n",
3996 mb->mbxStatus);
3997 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
3998 clear_bit(FC_FABRIC, &vport->fc_flag);
3999 clear_bit(FC_PUBLIC_LOOP, &vport->fc_flag);
4000 vport->fc_myDID = 0;
4001
4002 if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) ||
4003 (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME)) {
4004 if (phba->nvmet_support)
4005 lpfc_nvmet_update_targetport(phba);
4006 else
4007 lpfc_nvme_update_localport(vport);
4008 }
4009 goto out;
4010 }
4011
4012 clear_bit(FC_VPORT_NEEDS_REG_VPI, &vport->fc_flag);
4013 spin_lock_irq(shost->host_lock);
4014 vport->vpi_state |= LPFC_VPI_REGISTERED;
4015 spin_unlock_irq(shost->host_lock);
4016 vport->num_disc_nodes = 0;
4017 /* go thru NPR list and issue ELS PLOGIs */
4018 if (atomic_read(&vport->fc_npr_cnt))
4019 lpfc_els_disc_plogi(vport);
4020
4021 if (!vport->num_disc_nodes) {
4022 clear_bit(FC_NDISC_ACTIVE, &vport->fc_flag);
4023 lpfc_can_disctmo(vport);
4024 }
4025 vport->port_state = LPFC_VPORT_READY;
4026
4027out:
4028 mempool_free(pmb, phba->mbox_mem_pool);
4029 return;
4030}
4031
4032/**
4033 * lpfc_create_static_vport - Read HBA config region to create static vports.
4034 * @phba: pointer to lpfc hba data structure.
4035 *
4036 * This routine issue a DUMP mailbox command for config region 22 to get
4037 * the list of static vports to be created. The function create vports
4038 * based on the information returned from the HBA.
4039 **/
4040void
4041lpfc_create_static_vport(struct lpfc_hba *phba)
4042{
4043 LPFC_MBOXQ_t *pmb = NULL;
4044 MAILBOX_t *mb;
4045 struct static_vport_info *vport_info;
4046 int mbx_wait_rc = 0, i;
4047 struct fc_vport_identifiers vport_id;
4048 struct fc_vport *new_fc_vport;
4049 struct Scsi_Host *shost;
4050 struct lpfc_vport *vport;
4051 uint16_t offset = 0;
4052 uint8_t *vport_buff;
4053 struct lpfc_dmabuf *mp;
4054 uint32_t byte_count = 0;
4055
4056 pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
4057 if (!pmb) {
4058 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
4059 "0542 lpfc_create_static_vport failed to"
4060 " allocate mailbox memory\n");
4061 return;
4062 }
4063 memset(pmb, 0, sizeof(LPFC_MBOXQ_t));
4064 mb = &pmb->u.mb;
4065
4066 vport_info = kzalloc_obj(struct static_vport_info);
4067 if (!vport_info) {
4068 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
4069 "0543 lpfc_create_static_vport failed to"
4070 " allocate vport_info\n");
4071 mempool_free(pmb, phba->mbox_mem_pool);
4072 return;
4073 }
4074
4075 vport_buff = (uint8_t *) vport_info;
4076 do {
4077 /* While loop iteration forces a free dma buffer from
4078 * the previous loop because the mbox is reused and
4079 * the dump routine is a single-use construct.
4080 */
4081 if (pmb->ctx_buf) {
4082 mp = pmb->ctx_buf;
4083 lpfc_mbuf_free(phba, mp->virt, mp->phys);
4084 kfree(mp);
4085 pmb->ctx_buf = NULL;
4086 }
4087 if (lpfc_dump_static_vport(phba, pmb, offset))
4088 goto out;
4089
4090 pmb->vport = phba->pport;
4091 mbx_wait_rc = lpfc_sli_issue_mbox_wait(phba, pmb,
4092 LPFC_MBOX_TMO);
4093
4094 if ((mbx_wait_rc != MBX_SUCCESS) || mb->mbxStatus) {
4095 lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
4096 "0544 lpfc_create_static_vport failed to"
4097 " issue dump mailbox command ret 0x%x "
4098 "status 0x%x\n",
4099 mbx_wait_rc, mb->mbxStatus);
4100 goto out;
4101 }
4102
4103 if (phba->sli_rev == LPFC_SLI_REV4) {
4104 byte_count = pmb->u.mqe.un.mb_words[5];
4105 mp = pmb->ctx_buf;
4106 if (byte_count > sizeof(struct static_vport_info) -
4107 offset)
4108 byte_count = sizeof(struct static_vport_info)
4109 - offset;
4110 memcpy(vport_buff + offset, mp->virt, byte_count);
4111 offset += byte_count;
4112 } else {
4113 if (mb->un.varDmp.word_cnt >
4114 sizeof(struct static_vport_info) - offset)
4115 mb->un.varDmp.word_cnt =
4116 sizeof(struct static_vport_info)
4117 - offset;
4118 byte_count = mb->un.varDmp.word_cnt;
4119 lpfc_sli_pcimem_bcopy(((uint8_t *)mb) + DMP_RSP_OFFSET,
4120 vport_buff + offset,
4121 byte_count);
4122
4123 offset += byte_count;
4124 }
4125
4126 } while (byte_count &&
4127 offset < sizeof(struct static_vport_info));
4128
4129
4130 if ((le32_to_cpu(vport_info->signature) != VPORT_INFO_SIG) ||
4131 ((le32_to_cpu(vport_info->rev) & VPORT_INFO_REV_MASK)
4132 != VPORT_INFO_REV)) {
4133 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
4134 "0545 lpfc_create_static_vport bad"
4135 " information header 0x%x 0x%x\n",
4136 le32_to_cpu(vport_info->signature),
4137 le32_to_cpu(vport_info->rev) &
4138 VPORT_INFO_REV_MASK);
4139
4140 goto out;
4141 }
4142
4143 shost = lpfc_shost_from_vport(phba->pport);
4144
4145 for (i = 0; i < MAX_STATIC_VPORT_COUNT; i++) {
4146 memset(&vport_id, 0, sizeof(vport_id));
4147 vport_id.port_name = wwn_to_u64(vport_info->vport_list[i].wwpn);
4148 vport_id.node_name = wwn_to_u64(vport_info->vport_list[i].wwnn);
4149 if (!vport_id.port_name || !vport_id.node_name)
4150 continue;
4151
4152 vport_id.roles = FC_PORT_ROLE_FCP_INITIATOR;
4153 vport_id.vport_type = FC_PORTTYPE_NPIV;
4154 vport_id.disable = false;
4155 new_fc_vport = fc_vport_create(shost, 0, &vport_id);
4156
4157 if (!new_fc_vport) {
4158 lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
4159 "0546 lpfc_create_static_vport failed to"
4160 " create vport\n");
4161 continue;
4162 }
4163
4164 vport = *(struct lpfc_vport **)new_fc_vport->dd_data;
4165 vport->vport_flag |= STATIC_VPORT;
4166 }
4167
4168out:
4169 kfree(vport_info);
4170 if (mbx_wait_rc != MBX_TIMEOUT)
4171 lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED);
4172}
4173
4174/*
4175 * This routine handles processing a Fabric REG_LOGIN mailbox
4176 * command upon completion. It is setup in the LPFC_MBOXQ
4177 * as the completion routine when the command is
4178 * handed off to the SLI layer.
4179 */
4180void
4181lpfc_mbx_cmpl_fabric_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
4182{
4183 struct lpfc_vport *vport = pmb->vport;
4184 MAILBOX_t *mb = &pmb->u.mb;
4185 struct lpfc_nodelist *ndlp = pmb->ctx_ndlp;
4186
4187 pmb->ctx_ndlp = NULL;
4188
4189 if (mb->mbxStatus) {
4190 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
4191 "0258 Register Fabric login error: 0x%x\n",
4192 mb->mbxStatus);
4193 lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED);
4194 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
4195 /* FLOGI failed, use loop map to make discovery list */
4196 lpfc_disc_list_loopmap(vport);
4197
4198 /* Start discovery */
4199 lpfc_disc_start(vport);
4200 /* Decrement the reference count to ndlp after the
4201 * reference to the ndlp are done.
4202 */
4203 lpfc_nlp_put(ndlp);
4204 return;
4205 }
4206
4207 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
4208 /* Decrement the reference count to ndlp after the reference
4209 * to the ndlp are done.
4210 */
4211 lpfc_nlp_put(ndlp);
4212 return;
4213 }
4214
4215 if (phba->sli_rev < LPFC_SLI_REV4)
4216 ndlp->nlp_rpi = mb->un.varWords[0];
4217 set_bit(NLP_RPI_REGISTERED, &ndlp->nlp_flag);
4218 ndlp->nlp_type |= NLP_FABRIC;
4219 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
4220
4221 if (vport->port_state == LPFC_FABRIC_CFG_LINK) {
4222 /* when physical port receive logo donot start
4223 * vport discovery */
4224 if (!test_and_clear_bit(FC_LOGO_RCVD_DID_CHNG, &vport->fc_flag))
4225 lpfc_start_fdiscs(phba);
4226 lpfc_do_scr_ns_plogi(phba, vport);
4227 }
4228
4229 lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED);
4230
4231 /* Drop the reference count from the mbox at the end after
4232 * all the current reference to the ndlp have been done.
4233 */
4234 lpfc_nlp_put(ndlp);
4235 return;
4236}
4237
4238 /*
4239 * This routine will issue a GID_FT for each FC4 Type supported
4240 * by the driver. ALL GID_FTs must complete before discovery is started.
4241 */
4242int
4243lpfc_issue_gidft(struct lpfc_vport *vport)
4244{
4245 /* Good status, issue CT Request to NameServer */
4246 if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) ||
4247 (vport->cfg_enable_fc4_type == LPFC_ENABLE_FCP)) {
4248 if (lpfc_ns_cmd(vport, SLI_CTNS_GID_FT, 0, SLI_CTPT_FCP)) {
4249 /* Cannot issue NameServer FCP Query, so finish up
4250 * discovery
4251 */
4252 lpfc_printf_vlog(vport, KERN_ERR,
4253 LOG_TRACE_EVENT,
4254 "0604 %s FC TYPE %x %s\n",
4255 "Failed to issue GID_FT to ",
4256 FC_TYPE_FCP,
4257 "Finishing discovery.");
4258 return 0;
4259 }
4260 vport->gidft_inp++;
4261 }
4262
4263 if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) ||
4264 (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME)) {
4265 if (lpfc_ns_cmd(vport, SLI_CTNS_GID_FT, 0, SLI_CTPT_NVME)) {
4266 /* Cannot issue NameServer NVME Query, so finish up
4267 * discovery
4268 */
4269 lpfc_printf_vlog(vport, KERN_ERR,
4270 LOG_TRACE_EVENT,
4271 "0605 %s FC_TYPE %x %s %d\n",
4272 "Failed to issue GID_FT to ",
4273 FC_TYPE_NVME,
4274 "Finishing discovery: gidftinp ",
4275 vport->gidft_inp);
4276 if (vport->gidft_inp == 0)
4277 return 0;
4278 } else
4279 vport->gidft_inp++;
4280 }
4281 return vport->gidft_inp;
4282}
4283
4284/**
4285 * lpfc_issue_gidpt - issue a GID_PT for all N_Ports
4286 * @vport: The virtual port for which this call is being executed.
4287 *
4288 * This routine will issue a GID_PT to get a list of all N_Ports
4289 *
4290 * Return value :
4291 * 0 - Failure to issue a GID_PT
4292 * 1 - GID_PT issued
4293 **/
4294int
4295lpfc_issue_gidpt(struct lpfc_vport *vport)
4296{
4297 /* Good status, issue CT Request to NameServer */
4298 if (lpfc_ns_cmd(vport, SLI_CTNS_GID_PT, 0, GID_PT_N_PORT)) {
4299 /* Cannot issue NameServer FCP Query, so finish up
4300 * discovery
4301 */
4302 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
4303 "0606 %s Port TYPE %x %s\n",
4304 "Failed to issue GID_PT to ",
4305 GID_PT_N_PORT,
4306 "Finishing discovery.");
4307 return 0;
4308 }
4309 vport->gidft_inp++;
4310 return 1;
4311}
4312
4313/*
4314 * This routine handles processing a NameServer REG_LOGIN mailbox
4315 * command upon completion. It is setup in the LPFC_MBOXQ
4316 * as the completion routine when the command is
4317 * handed off to the SLI layer.
4318 */
4319void
4320lpfc_mbx_cmpl_ns_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
4321{
4322 MAILBOX_t *mb = &pmb->u.mb;
4323 struct lpfc_nodelist *ndlp = pmb->ctx_ndlp;
4324 struct lpfc_vport *vport = pmb->vport;
4325 int rc;
4326
4327 pmb->ctx_ndlp = NULL;
4328 vport->gidft_inp = 0;
4329
4330 if (mb->mbxStatus) {
4331 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
4332 "0260 Register NameServer error: 0x%x\n",
4333 mb->mbxStatus);
4334
4335out:
4336 /* decrement the node reference count held for this
4337 * callback function.
4338 */
4339 lpfc_nlp_put(ndlp);
4340 lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED);
4341
4342 /* If the node is not registered with the scsi or nvme
4343 * transport, remove the fabric node. The failed reg_login
4344 * is terminal and forces the removal of the last node
4345 * reference.
4346 */
4347 if (!(ndlp->fc4_xpt_flags & (SCSI_XPT_REGD | NVME_XPT_REGD))) {
4348 clear_bit(NLP_NPR_2B_DISC, &ndlp->nlp_flag);
4349 lpfc_nlp_put(ndlp);
4350 }
4351
4352 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
4353 /*
4354 * RegLogin failed, use loop map to make discovery
4355 * list
4356 */
4357 lpfc_disc_list_loopmap(vport);
4358
4359 /* Start discovery */
4360 lpfc_disc_start(vport);
4361 return;
4362 }
4363 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
4364 return;
4365 }
4366
4367 if (phba->sli_rev < LPFC_SLI_REV4)
4368 ndlp->nlp_rpi = mb->un.varWords[0];
4369 set_bit(NLP_RPI_REGISTERED, &ndlp->nlp_flag);
4370 ndlp->nlp_type |= NLP_FABRIC;
4371 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
4372 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE | LOG_DISCOVERY,
4373 "0003 rpi:%x DID:%x flg:%lx %d x%px\n",
4374 ndlp->nlp_rpi, ndlp->nlp_DID, ndlp->nlp_flag,
4375 kref_read(&ndlp->kref),
4376 ndlp);
4377
4378 if (vport->port_state < LPFC_VPORT_READY) {
4379 /* Link up discovery requires Fabric registration. */
4380 lpfc_ns_cmd(vport, SLI_CTNS_RNN_ID, 0, 0);
4381 lpfc_ns_cmd(vport, SLI_CTNS_RSNN_NN, 0, 0);
4382 lpfc_ns_cmd(vport, SLI_CTNS_RSPN_ID, 0, 0);
4383 if (phba->pni)
4384 lpfc_ns_cmd(vport, SLI_CTNS_RSPNI_PNI, 0, 0);
4385 lpfc_ns_cmd(vport, SLI_CTNS_RFT_ID, 0, 0);
4386
4387 if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) ||
4388 (vport->cfg_enable_fc4_type == LPFC_ENABLE_FCP))
4389 lpfc_ns_cmd(vport, SLI_CTNS_RFF_ID, 0, FC_TYPE_FCP);
4390
4391 if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) ||
4392 (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME))
4393 lpfc_ns_cmd(vport, SLI_CTNS_RFF_ID, 0,
4394 FC_TYPE_NVME);
4395
4396 /* Issue SCR just before NameServer GID_FT Query */
4397 lpfc_issue_els_scr(vport, 0);
4398
4399 /* Link was bounced or a Fabric LOGO occurred. Start EDC
4400 * with initial FW values provided the congestion mode is
4401 * not off. Note that signals may or may not be supported
4402 * by the adapter but FPIN is provided by default for 1
4403 * or both missing signals support.
4404 */
4405 if (phba->cmf_active_mode != LPFC_CFG_OFF) {
4406 phba->cgn_reg_fpin = phba->cgn_init_reg_fpin;
4407 phba->cgn_reg_signal = phba->cgn_init_reg_signal;
4408 rc = lpfc_issue_els_edc(vport, 0);
4409 lpfc_printf_log(phba, KERN_INFO,
4410 LOG_INIT | LOG_ELS | LOG_DISCOVERY,
4411 "4220 Issue EDC status x%x Data x%x\n",
4412 rc, phba->cgn_init_reg_signal);
4413 } else if (phba->lmt & (LMT_64Gb | LMT_128Gb)) {
4414 /* may send link fault capability descriptor */
4415 lpfc_issue_els_edc(vport, 0);
4416 } else {
4417 lpfc_issue_els_rdf(vport, 0);
4418 }
4419 }
4420
4421 vport->fc_ns_retry = 0;
4422 if (lpfc_issue_gidft(vport) == 0)
4423 goto out;
4424
4425 /*
4426 * At this point in time we may need to wait for multiple
4427 * SLI_CTNS_GID_FT CT commands to complete before we start discovery.
4428 *
4429 * decrement the node reference count held for this
4430 * callback function.
4431 */
4432 lpfc_nlp_put(ndlp);
4433 lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED);
4434 return;
4435}
4436
4437/*
4438 * This routine handles processing a Fabric Controller REG_LOGIN mailbox
4439 * command upon completion. It is setup in the LPFC_MBOXQ
4440 * as the completion routine when the command is handed off to the SLI layer.
4441 */
4442void
4443lpfc_mbx_cmpl_fc_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
4444{
4445 struct lpfc_vport *vport = pmb->vport;
4446 MAILBOX_t *mb = &pmb->u.mb;
4447 struct lpfc_nodelist *ndlp = pmb->ctx_ndlp;
4448
4449 pmb->ctx_ndlp = NULL;
4450 if (mb->mbxStatus) {
4451 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
4452 "0933 %s: Register FC login error: 0x%x\n",
4453 __func__, mb->mbxStatus);
4454 goto out;
4455 }
4456
4457 lpfc_check_nlp_post_devloss(vport, ndlp);
4458
4459 if (phba->sli_rev < LPFC_SLI_REV4)
4460 ndlp->nlp_rpi = mb->un.varWords[0];
4461
4462 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
4463 "0934 %s: Complete FC x%x RegLogin rpi x%x ste x%x\n",
4464 __func__, ndlp->nlp_DID, ndlp->nlp_rpi,
4465 ndlp->nlp_state);
4466
4467 set_bit(NLP_RPI_REGISTERED, &ndlp->nlp_flag);
4468 clear_bit(NLP_REG_LOGIN_SEND, &ndlp->nlp_flag);
4469 ndlp->nlp_type |= NLP_FABRIC;
4470 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
4471
4472 out:
4473 lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED);
4474
4475 /* Drop the reference count from the mbox at the end after
4476 * all the current reference to the ndlp have been done.
4477 */
4478 lpfc_nlp_put(ndlp);
4479}
4480
4481static void
4482lpfc_register_remote_port(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
4483{
4484 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4485 struct fc_rport *rport;
4486 struct lpfc_rport_data *rdata;
4487 struct fc_rport_identifiers rport_ids;
4488 struct lpfc_hba *phba = vport->phba;
4489 unsigned long flags;
4490
4491 if (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME)
4492 return;
4493
4494 /* Remote port has reappeared. Re-register w/ FC transport */
4495 rport_ids.node_name = wwn_to_u64(ndlp->nlp_nodename.u.wwn);
4496 rport_ids.port_name = wwn_to_u64(ndlp->nlp_portname.u.wwn);
4497 rport_ids.port_id = ndlp->nlp_DID;
4498 rport_ids.roles = FC_RPORT_ROLE_UNKNOWN;
4499
4500
4501 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
4502 "rport add: did:x%x flg:x%lx type x%x",
4503 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
4504
4505 /* Don't add the remote port if unloading. */
4506 if (test_bit(FC_UNLOADING, &vport->load_flag))
4507 return;
4508
4509 ndlp->rport = rport = fc_remote_port_add(shost, 0, &rport_ids);
4510 if (!rport) {
4511 dev_printk(KERN_WARNING, &phba->pcidev->dev,
4512 "Warning: fc_remote_port_add failed\n");
4513 return;
4514 }
4515
4516 /* Successful port add. Complete initializing node data */
4517 rport->maxframe_size = ndlp->nlp_maxframe;
4518 rport->supported_classes = ndlp->nlp_class_sup;
4519 rdata = rport->dd_data;
4520 rdata->pnode = lpfc_nlp_get(ndlp);
4521 if (!rdata->pnode) {
4522 dev_warn(&phba->pcidev->dev,
4523 "Warning - node ref failed. Unreg rport\n");
4524 fc_remote_port_delete(rport);
4525 ndlp->rport = NULL;
4526 return;
4527 }
4528
4529 spin_lock_irqsave(&ndlp->lock, flags);
4530 ndlp->fc4_xpt_flags |= SCSI_XPT_REGD;
4531 spin_unlock_irqrestore(&ndlp->lock, flags);
4532
4533 if (ndlp->nlp_type & NLP_FCP_TARGET)
4534 rport_ids.roles |= FC_PORT_ROLE_FCP_TARGET;
4535 if (ndlp->nlp_type & NLP_FCP_INITIATOR)
4536 rport_ids.roles |= FC_PORT_ROLE_FCP_INITIATOR;
4537 if (ndlp->nlp_type & NLP_NVME_INITIATOR)
4538 rport_ids.roles |= FC_PORT_ROLE_NVME_INITIATOR;
4539 if (ndlp->nlp_type & NLP_NVME_TARGET)
4540 rport_ids.roles |= FC_PORT_ROLE_NVME_TARGET;
4541 if (ndlp->nlp_type & NLP_NVME_DISCOVERY)
4542 rport_ids.roles |= FC_PORT_ROLE_NVME_DISCOVERY;
4543
4544 if (rport_ids.roles != FC_RPORT_ROLE_UNKNOWN)
4545 fc_remote_port_rolechg(rport, rport_ids.roles);
4546
4547 lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE,
4548 "3183 %s rport x%px DID x%x, role x%x refcnt %d\n",
4549 __func__, rport, rport->port_id, rport->roles,
4550 kref_read(&ndlp->kref));
4551
4552 if ((rport->scsi_target_id != -1) &&
4553 (rport->scsi_target_id < LPFC_MAX_TARGET)) {
4554 ndlp->nlp_sid = rport->scsi_target_id;
4555 }
4556
4557 return;
4558}
4559
4560static void
4561lpfc_unregister_remote_port(struct lpfc_nodelist *ndlp)
4562{
4563 struct fc_rport *rport = ndlp->rport;
4564 struct lpfc_vport *vport = ndlp->vport;
4565
4566 if (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME)
4567 return;
4568
4569 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
4570 "rport delete: did:x%x flg:x%lx type x%x",
4571 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
4572
4573 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
4574 "3184 rport unregister x%06x, rport x%px "
4575 "xptflg x%x refcnt %d\n",
4576 ndlp->nlp_DID, rport, ndlp->fc4_xpt_flags,
4577 kref_read(&ndlp->kref));
4578
4579 fc_remote_port_delete(rport);
4580 lpfc_nlp_put(ndlp);
4581}
4582
4583static void
4584lpfc_nlp_counters(struct lpfc_vport *vport, int state, int count)
4585{
4586 switch (state) {
4587 case NLP_STE_UNUSED_NODE:
4588 atomic_add(count, &vport->fc_unused_cnt);
4589 break;
4590 case NLP_STE_PLOGI_ISSUE:
4591 atomic_add(count, &vport->fc_plogi_cnt);
4592 break;
4593 case NLP_STE_ADISC_ISSUE:
4594 atomic_add(count, &vport->fc_adisc_cnt);
4595 break;
4596 case NLP_STE_REG_LOGIN_ISSUE:
4597 atomic_add(count, &vport->fc_reglogin_cnt);
4598 break;
4599 case NLP_STE_PRLI_ISSUE:
4600 atomic_add(count, &vport->fc_prli_cnt);
4601 break;
4602 case NLP_STE_UNMAPPED_NODE:
4603 atomic_add(count, &vport->fc_unmap_cnt);
4604 break;
4605 case NLP_STE_MAPPED_NODE:
4606 atomic_add(count, &vport->fc_map_cnt);
4607 break;
4608 case NLP_STE_NPR_NODE:
4609 if (!atomic_read(&vport->fc_npr_cnt) && count == -1)
4610 atomic_set(&vport->fc_npr_cnt, 0);
4611 else
4612 atomic_add(count, &vport->fc_npr_cnt);
4613 break;
4614 }
4615}
4616
4617/* Register a node with backend if not already done */
4618void
4619lpfc_nlp_reg_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
4620{
4621 unsigned long iflags;
4622
4623 lpfc_check_nlp_post_devloss(vport, ndlp);
4624
4625 spin_lock_irqsave(&ndlp->lock, iflags);
4626 if (ndlp->fc4_xpt_flags & NLP_XPT_REGD) {
4627 /* Already registered with backend, trigger rescan */
4628 spin_unlock_irqrestore(&ndlp->lock, iflags);
4629
4630 if (ndlp->fc4_xpt_flags & NVME_XPT_REGD &&
4631 ndlp->nlp_type & (NLP_NVME_TARGET | NLP_NVME_DISCOVERY)) {
4632 lpfc_nvme_rescan_port(vport, ndlp);
4633 }
4634 return;
4635 }
4636
4637 ndlp->fc4_xpt_flags |= NLP_XPT_REGD;
4638 spin_unlock_irqrestore(&ndlp->lock, iflags);
4639
4640 if (lpfc_valid_xpt_node(ndlp)) {
4641 vport->phba->nport_event_cnt++;
4642 /*
4643 * Tell the fc transport about the port, if we haven't
4644 * already. If we have, and it's a scsi entity, be
4645 */
4646 lpfc_register_remote_port(vport, ndlp);
4647 }
4648
4649 /* We are done if we do not have any NVME remote node */
4650 if (!(ndlp->nlp_fc4_type & NLP_FC4_NVME))
4651 return;
4652
4653 /* Notify the NVME transport of this new rport. */
4654 if (vport->phba->sli_rev >= LPFC_SLI_REV4 &&
4655 ndlp->nlp_fc4_type & NLP_FC4_NVME) {
4656 if (vport->phba->nvmet_support == 0) {
4657 /* Register this rport with the transport.
4658 * Only NVME Target Rports are registered with
4659 * the transport.
4660 */
4661 if (ndlp->nlp_type & NLP_NVME_TARGET) {
4662 vport->phba->nport_event_cnt++;
4663 lpfc_nvme_register_port(vport, ndlp);
4664 }
4665 } else {
4666 /* Just take an NDLP ref count since the
4667 * target does not register rports.
4668 */
4669 lpfc_nlp_get(ndlp);
4670 }
4671 }
4672}
4673
4674/* Unregister a node with backend if not already done */
4675void
4676lpfc_nlp_unreg_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
4677{
4678 unsigned long iflags;
4679
4680 spin_lock_irqsave(&ndlp->lock, iflags);
4681 if (!(ndlp->fc4_xpt_flags & NLP_XPT_REGD)) {
4682 spin_unlock_irqrestore(&ndlp->lock, iflags);
4683 lpfc_printf_vlog(vport, KERN_INFO,
4684 LOG_ELS | LOG_NODE | LOG_DISCOVERY,
4685 "0999 %s Not regd: ndlp x%px rport x%px DID "
4686 "x%x FLG x%lx XPT x%x\n",
4687 __func__, ndlp, ndlp->rport, ndlp->nlp_DID,
4688 ndlp->nlp_flag, ndlp->fc4_xpt_flags);
4689 return;
4690 }
4691
4692 ndlp->fc4_xpt_flags &= ~NLP_XPT_REGD;
4693 spin_unlock_irqrestore(&ndlp->lock, iflags);
4694
4695 if (ndlp->rport &&
4696 ndlp->fc4_xpt_flags & SCSI_XPT_REGD) {
4697 vport->phba->nport_event_cnt++;
4698 lpfc_unregister_remote_port(ndlp);
4699 } else if (!ndlp->rport) {
4700 lpfc_printf_vlog(vport, KERN_INFO,
4701 LOG_ELS | LOG_NODE | LOG_DISCOVERY,
4702 "1999 %s NDLP in devloss x%px DID x%x FLG x%lx"
4703 " XPT x%x refcnt %u\n",
4704 __func__, ndlp, ndlp->nlp_DID, ndlp->nlp_flag,
4705 ndlp->fc4_xpt_flags,
4706 kref_read(&ndlp->kref));
4707 }
4708
4709 if (ndlp->fc4_xpt_flags & NVME_XPT_REGD) {
4710 vport->phba->nport_event_cnt++;
4711 if (vport->phba->nvmet_support == 0) {
4712 lpfc_nvme_unregister_port(vport, ndlp);
4713 } else {
4714 /* NVMET has no upcall. */
4715 lpfc_nlp_put(ndlp);
4716 }
4717 }
4718
4719}
4720
4721/*
4722 * Adisc state change handling
4723 */
4724static void
4725lpfc_handle_adisc_state(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
4726 int new_state)
4727{
4728 switch (new_state) {
4729 /*
4730 * Any state to ADISC_ISSUE
4731 * Do nothing, adisc cmpl handling will trigger state changes
4732 */
4733 case NLP_STE_ADISC_ISSUE:
4734 break;
4735
4736 /*
4737 * ADISC_ISSUE to mapped states
4738 * Trigger a registration with backend, it will be nop if
4739 * already registered
4740 */
4741 case NLP_STE_UNMAPPED_NODE:
4742 ndlp->nlp_type |= NLP_FC_NODE;
4743 fallthrough;
4744 case NLP_STE_MAPPED_NODE:
4745 clear_bit(NLP_NODEV_REMOVE, &ndlp->nlp_flag);
4746 lpfc_nlp_reg_node(vport, ndlp);
4747 break;
4748
4749 /*
4750 * ADISC_ISSUE to non-mapped states
4751 * We are moving from ADISC_ISSUE to a non-mapped state because
4752 * ADISC failed, we would have skipped unregistering with
4753 * backend, attempt it now
4754 */
4755 case NLP_STE_NPR_NODE:
4756 clear_bit(NLP_RCV_PLOGI, &ndlp->nlp_flag);
4757 fallthrough;
4758 default:
4759 lpfc_nlp_unreg_node(vport, ndlp);
4760 break;
4761 }
4762
4763}
4764
4765static void
4766lpfc_nlp_state_cleanup(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
4767 int old_state, int new_state)
4768{
4769 /* Trap ADISC changes here */
4770 if (new_state == NLP_STE_ADISC_ISSUE ||
4771 old_state == NLP_STE_ADISC_ISSUE) {
4772 lpfc_handle_adisc_state(vport, ndlp, new_state);
4773 return;
4774 }
4775
4776 if (new_state == NLP_STE_UNMAPPED_NODE) {
4777 clear_bit(NLP_NODEV_REMOVE, &ndlp->nlp_flag);
4778 ndlp->nlp_type |= NLP_FC_NODE;
4779 }
4780 if (new_state == NLP_STE_MAPPED_NODE)
4781 clear_bit(NLP_NODEV_REMOVE, &ndlp->nlp_flag);
4782 if (new_state == NLP_STE_NPR_NODE)
4783 clear_bit(NLP_RCV_PLOGI, &ndlp->nlp_flag);
4784
4785 /* Reg/Unreg for FCP and NVME Transport interface */
4786 if ((old_state == NLP_STE_MAPPED_NODE ||
4787 old_state == NLP_STE_UNMAPPED_NODE)) {
4788 /* For nodes marked for ADISC, Handle unreg in ADISC cmpl
4789 * if linkup. In linkdown do unreg_node
4790 */
4791 if (!test_bit(NLP_NPR_ADISC, &ndlp->nlp_flag) ||
4792 !lpfc_is_link_up(vport->phba))
4793 lpfc_nlp_unreg_node(vport, ndlp);
4794 }
4795
4796 if (new_state == NLP_STE_MAPPED_NODE ||
4797 new_state == NLP_STE_UNMAPPED_NODE)
4798 lpfc_nlp_reg_node(vport, ndlp);
4799
4800 /*
4801 * If the node just added to Mapped list was an FCP target,
4802 * but the remote port registration failed or assigned a target
4803 * id outside the presentable range - move the node to the
4804 * Unmapped List.
4805 */
4806 if ((new_state == NLP_STE_MAPPED_NODE) &&
4807 (ndlp->nlp_type & NLP_FCP_TARGET) &&
4808 (!ndlp->rport ||
4809 ndlp->rport->scsi_target_id == -1 ||
4810 ndlp->rport->scsi_target_id >= LPFC_MAX_TARGET)) {
4811 set_bit(NLP_TGT_NO_SCSIID, &ndlp->nlp_flag);
4812 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
4813 }
4814}
4815
4816static char *
4817lpfc_nlp_state_name(char *buffer, size_t size, int state)
4818{
4819 static char *states[] = {
4820 [NLP_STE_UNUSED_NODE] = "UNUSED",
4821 [NLP_STE_PLOGI_ISSUE] = "PLOGI",
4822 [NLP_STE_ADISC_ISSUE] = "ADISC",
4823 [NLP_STE_REG_LOGIN_ISSUE] = "REGLOGIN",
4824 [NLP_STE_PRLI_ISSUE] = "PRLI",
4825 [NLP_STE_LOGO_ISSUE] = "LOGO",
4826 [NLP_STE_UNMAPPED_NODE] = "UNMAPPED",
4827 [NLP_STE_MAPPED_NODE] = "MAPPED",
4828 [NLP_STE_NPR_NODE] = "NPR",
4829 };
4830
4831 if (state < NLP_STE_MAX_STATE && states[state])
4832 strscpy(buffer, states[state], size);
4833 else
4834 snprintf(buffer, size, "unknown (%d)", state);
4835 return buffer;
4836}
4837
4838void
4839lpfc_nlp_set_state(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
4840 int state)
4841{
4842 int old_state = ndlp->nlp_state;
4843 bool node_dropped = test_bit(NLP_DROPPED, &ndlp->nlp_flag);
4844 char name1[16], name2[16];
4845 unsigned long iflags;
4846
4847 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
4848 "0904 NPort state transition x%06x, %s -> %s\n",
4849 ndlp->nlp_DID,
4850 lpfc_nlp_state_name(name1, sizeof(name1), old_state),
4851 lpfc_nlp_state_name(name2, sizeof(name2), state));
4852
4853 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
4854 "node statechg did:x%x old:%d ste:%d",
4855 ndlp->nlp_DID, old_state, state);
4856
4857 if (node_dropped && old_state == NLP_STE_UNUSED_NODE &&
4858 state != NLP_STE_UNUSED_NODE) {
4859 clear_bit(NLP_DROPPED, &ndlp->nlp_flag);
4860 lpfc_nlp_get(ndlp);
4861 }
4862
4863 if (old_state == NLP_STE_NPR_NODE &&
4864 state != NLP_STE_NPR_NODE)
4865 lpfc_cancel_retry_delay_tmo(vport, ndlp);
4866 if (old_state == NLP_STE_UNMAPPED_NODE) {
4867 clear_bit(NLP_TGT_NO_SCSIID, &ndlp->nlp_flag);
4868 ndlp->nlp_type &= ~NLP_FC_NODE;
4869 }
4870
4871 if (list_empty(&ndlp->nlp_listp)) {
4872 spin_lock_irqsave(&vport->fc_nodes_list_lock, iflags);
4873 list_add_tail(&ndlp->nlp_listp, &vport->fc_nodes);
4874 spin_unlock_irqrestore(&vport->fc_nodes_list_lock, iflags);
4875 } else if (old_state)
4876 lpfc_nlp_counters(vport, old_state, -1);
4877
4878 ndlp->nlp_state = state;
4879 lpfc_nlp_counters(vport, state, 1);
4880 lpfc_nlp_state_cleanup(vport, ndlp, old_state, state);
4881}
4882
4883void
4884lpfc_enqueue_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
4885{
4886 unsigned long iflags;
4887
4888 if (list_empty(&ndlp->nlp_listp)) {
4889 spin_lock_irqsave(&vport->fc_nodes_list_lock, iflags);
4890 list_add_tail(&ndlp->nlp_listp, &vport->fc_nodes);
4891 spin_unlock_irqrestore(&vport->fc_nodes_list_lock, iflags);
4892 }
4893}
4894
4895void
4896lpfc_dequeue_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
4897{
4898 unsigned long iflags;
4899
4900 lpfc_cancel_retry_delay_tmo(vport, ndlp);
4901 if (ndlp->nlp_state && !list_empty(&ndlp->nlp_listp))
4902 lpfc_nlp_counters(vport, ndlp->nlp_state, -1);
4903 spin_lock_irqsave(&vport->fc_nodes_list_lock, iflags);
4904 list_del_init(&ndlp->nlp_listp);
4905 spin_unlock_irqrestore(&vport->fc_nodes_list_lock, iflags);
4906 lpfc_nlp_state_cleanup(vport, ndlp, ndlp->nlp_state,
4907 NLP_STE_UNUSED_NODE);
4908}
4909
4910/**
4911 * lpfc_initialize_node - Initialize all fields of node object
4912 * @vport: Pointer to Virtual Port object.
4913 * @ndlp: Pointer to FC node object.
4914 * @did: FC_ID of the node.
4915 *
4916 * This function is always called when node object need to be initialized.
4917 * It initializes all the fields of the node object. Although the reference
4918 * to phba from @ndlp can be obtained indirectly through it's reference to
4919 * @vport, a direct reference to phba is taken here by @ndlp. This is due
4920 * to the life-span of the @ndlp might go beyond the existence of @vport as
4921 * the final release of ndlp is determined by its reference count. And, the
4922 * operation on @ndlp needs the reference to phba.
4923 **/
4924static inline void
4925lpfc_initialize_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
4926 uint32_t did)
4927{
4928 INIT_LIST_HEAD(&ndlp->els_retry_evt.evt_listp);
4929 INIT_LIST_HEAD(&ndlp->dev_loss_evt.evt_listp);
4930 timer_setup(&ndlp->nlp_delayfunc, lpfc_els_retry_delay, 0);
4931 INIT_LIST_HEAD(&ndlp->recovery_evt.evt_listp);
4932
4933 ndlp->nlp_DID = did;
4934 ndlp->vport = vport;
4935 ndlp->phba = vport->phba;
4936 ndlp->nlp_sid = NLP_NO_SID;
4937 ndlp->nlp_fc4_type = NLP_FC4_NONE;
4938 kref_init(&ndlp->kref);
4939 atomic_set(&ndlp->cmd_pending, 0);
4940 ndlp->cmd_qdepth = vport->cfg_tgt_queue_depth;
4941 ndlp->nlp_defer_did = NLP_EVT_NOTHING_PENDING;
4942}
4943
4944void
4945lpfc_drop_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
4946{
4947 /*
4948 * Use of lpfc_drop_node and UNUSED list: lpfc_drop_node should
4949 * be used when lpfc wants to remove the "last" lpfc_nlp_put() to
4950 * release the ndlp from the vport when conditions are correct.
4951 */
4952 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
4953 return;
4954 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNUSED_NODE);
4955 if (vport->phba->sli_rev == LPFC_SLI_REV4) {
4956 lpfc_cleanup_vports_rrqs(vport, ndlp);
4957 lpfc_unreg_rpi(vport, ndlp);
4958 }
4959
4960 /* NLP_DROPPED means another thread already removed the initial
4961 * reference from lpfc_nlp_init. If set, don't drop it again and
4962 * introduce an imbalance.
4963 */
4964 if (!test_and_set_bit(NLP_DROPPED, &ndlp->nlp_flag))
4965 lpfc_nlp_put(ndlp);
4966}
4967
4968/*
4969 * Start / ReStart rescue timer for Discovery / RSCN handling
4970 */
4971void
4972lpfc_set_disctmo(struct lpfc_vport *vport)
4973{
4974 struct lpfc_hba *phba = vport->phba;
4975 uint32_t tmo;
4976
4977 if (vport->port_state == LPFC_LOCAL_CFG_LINK) {
4978 /* For FAN, timeout should be greater than edtov */
4979 tmo = (((phba->fc_edtov + 999) / 1000) + 1);
4980 } else {
4981 /* Normal discovery timeout should be > than ELS/CT timeout
4982 * FC spec states we need 3 * ratov for CT requests
4983 */
4984 tmo = ((phba->fc_ratov * 3) + 3);
4985 }
4986
4987
4988 if (!timer_pending(&vport->fc_disctmo)) {
4989 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
4990 "set disc timer: tmo:x%x state:x%x flg:x%x",
4991 tmo, vport->port_state, vport->fc_flag);
4992 }
4993
4994 mod_timer(&vport->fc_disctmo, jiffies + secs_to_jiffies(tmo));
4995 set_bit(FC_DISC_TMO, &vport->fc_flag);
4996
4997 /* Start Discovery Timer state <hba_state> */
4998 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
4999 "0247 Start Discovery Timer state x%x "
5000 "Data: x%x x%lx x%x x%x\n",
5001 vport->port_state, tmo,
5002 (unsigned long)&vport->fc_disctmo,
5003 atomic_read(&vport->fc_plogi_cnt),
5004 atomic_read(&vport->fc_adisc_cnt));
5005
5006 return;
5007}
5008
5009/*
5010 * Cancel rescue timer for Discovery / RSCN handling
5011 */
5012int
5013lpfc_can_disctmo(struct lpfc_vport *vport)
5014{
5015 unsigned long iflags;
5016
5017 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
5018 "can disc timer: state:x%x rtry:x%x flg:x%x",
5019 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
5020
5021 /* Turn off discovery timer if its running */
5022 if (test_bit(FC_DISC_TMO, &vport->fc_flag) ||
5023 timer_pending(&vport->fc_disctmo)) {
5024 clear_bit(FC_DISC_TMO, &vport->fc_flag);
5025 timer_delete_sync(&vport->fc_disctmo);
5026 spin_lock_irqsave(&vport->work_port_lock, iflags);
5027 vport->work_port_events &= ~WORKER_DISC_TMO;
5028 spin_unlock_irqrestore(&vport->work_port_lock, iflags);
5029 }
5030
5031 /* Cancel Discovery Timer state <hba_state> */
5032 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
5033 "0248 Cancel Discovery Timer state x%x "
5034 "Data: x%lx x%x x%x\n",
5035 vport->port_state, vport->fc_flag,
5036 atomic_read(&vport->fc_plogi_cnt),
5037 atomic_read(&vport->fc_adisc_cnt));
5038 return 0;
5039}
5040
5041/*
5042 * Check specified ring for outstanding IOCB on the SLI queue
5043 * Return true if iocb matches the specified nport
5044 */
5045int
5046lpfc_check_sli_ndlp(struct lpfc_hba *phba,
5047 struct lpfc_sli_ring *pring,
5048 struct lpfc_iocbq *iocb,
5049 struct lpfc_nodelist *ndlp)
5050{
5051 struct lpfc_vport *vport = ndlp->vport;
5052 u8 ulp_command;
5053 u16 ulp_context;
5054 u32 remote_id;
5055
5056 if (iocb->vport != vport)
5057 return 0;
5058
5059 ulp_command = get_job_cmnd(phba, iocb);
5060 ulp_context = get_job_ulpcontext(phba, iocb);
5061 remote_id = get_job_els_rsp64_did(phba, iocb);
5062
5063 if (pring->ringno == LPFC_ELS_RING) {
5064 switch (ulp_command) {
5065 case CMD_GEN_REQUEST64_CR:
5066 if (iocb->ndlp == ndlp)
5067 return 1;
5068 break;
5069 case CMD_ELS_REQUEST64_CR:
5070 if (remote_id == ndlp->nlp_DID)
5071 return 1;
5072 fallthrough;
5073 case CMD_XMIT_ELS_RSP64_CX:
5074 if (iocb->ndlp == ndlp)
5075 return 1;
5076 }
5077 } else if (pring->ringno == LPFC_FCP_RING) {
5078 /* Skip match check if waiting to relogin to FCP target */
5079 if ((ndlp->nlp_type & NLP_FCP_TARGET) &&
5080 test_bit(NLP_DELAY_TMO, &ndlp->nlp_flag))
5081 return 0;
5082
5083 if (ulp_context == ndlp->nlp_rpi)
5084 return 1;
5085 }
5086 return 0;
5087}
5088
5089static void
5090__lpfc_dequeue_nport_iocbs(struct lpfc_hba *phba,
5091 struct lpfc_nodelist *ndlp, struct lpfc_sli_ring *pring,
5092 struct list_head *dequeue_list)
5093{
5094 struct lpfc_iocbq *iocb, *next_iocb;
5095
5096 list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
5097 /* Check to see if iocb matches the nport */
5098 if (lpfc_check_sli_ndlp(phba, pring, iocb, ndlp))
5099 /* match, dequeue */
5100 list_move_tail(&iocb->list, dequeue_list);
5101 }
5102}
5103
5104static void
5105lpfc_sli3_dequeue_nport_iocbs(struct lpfc_hba *phba,
5106 struct lpfc_nodelist *ndlp, struct list_head *dequeue_list)
5107{
5108 struct lpfc_sli *psli = &phba->sli;
5109 uint32_t i;
5110
5111 spin_lock_irq(&phba->hbalock);
5112 for (i = 0; i < psli->num_rings; i++)
5113 __lpfc_dequeue_nport_iocbs(phba, ndlp, &psli->sli3_ring[i],
5114 dequeue_list);
5115 spin_unlock_irq(&phba->hbalock);
5116}
5117
5118static void
5119lpfc_sli4_dequeue_nport_iocbs(struct lpfc_hba *phba,
5120 struct lpfc_nodelist *ndlp, struct list_head *dequeue_list)
5121{
5122 struct lpfc_sli_ring *pring;
5123 struct lpfc_queue *qp = NULL;
5124
5125 spin_lock_irq(&phba->hbalock);
5126 list_for_each_entry(qp, &phba->sli4_hba.lpfc_wq_list, wq_list) {
5127 pring = qp->pring;
5128 if (!pring)
5129 continue;
5130 spin_lock(&pring->ring_lock);
5131 __lpfc_dequeue_nport_iocbs(phba, ndlp, pring, dequeue_list);
5132 spin_unlock(&pring->ring_lock);
5133 }
5134 spin_unlock_irq(&phba->hbalock);
5135}
5136
5137/*
5138 * Free resources / clean up outstanding I/Os
5139 * associated with nlp_rpi in the LPFC_NODELIST entry.
5140 */
5141static int
5142lpfc_no_rpi(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
5143{
5144 LIST_HEAD(completions);
5145
5146 lpfc_fabric_abort_nport(ndlp);
5147
5148 /*
5149 * Everything that matches on txcmplq will be returned
5150 * by firmware with a no rpi error.
5151 */
5152 if (test_bit(NLP_RPI_REGISTERED, &ndlp->nlp_flag)) {
5153 if (phba->sli_rev != LPFC_SLI_REV4)
5154 lpfc_sli3_dequeue_nport_iocbs(phba, ndlp, &completions);
5155 else
5156 lpfc_sli4_dequeue_nport_iocbs(phba, ndlp, &completions);
5157 }
5158
5159 /* Cancel all the IOCBs from the completions list */
5160 lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
5161 IOERR_SLI_ABORTED);
5162
5163 return 0;
5164}
5165
5166/**
5167 * lpfc_nlp_logo_unreg - Unreg mailbox completion handler before LOGO
5168 * @phba: Pointer to HBA context object.
5169 * @pmb: Pointer to mailbox object.
5170 *
5171 * This function will issue an ELS LOGO command after completing
5172 * the UNREG_RPI.
5173 **/
5174static void
5175lpfc_nlp_logo_unreg(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
5176{
5177 struct lpfc_vport *vport = pmb->vport;
5178 struct lpfc_nodelist *ndlp;
5179
5180 ndlp = pmb->ctx_ndlp;
5181 if (!ndlp)
5182 return;
5183 lpfc_issue_els_logo(vport, ndlp, 0);
5184
5185 /* Check to see if there are any deferred events to process */
5186 if (test_bit(NLP_UNREG_INP, &ndlp->nlp_flag) &&
5187 ndlp->nlp_defer_did != NLP_EVT_NOTHING_PENDING) {
5188 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
5189 "1434 UNREG cmpl deferred logo x%x "
5190 "on NPort x%x Data: x%x x%px\n",
5191 ndlp->nlp_rpi, ndlp->nlp_DID,
5192 ndlp->nlp_defer_did, ndlp);
5193
5194 clear_bit(NLP_UNREG_INP, &ndlp->nlp_flag);
5195 ndlp->nlp_defer_did = NLP_EVT_NOTHING_PENDING;
5196 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
5197 } else {
5198 clear_bit(NLP_UNREG_INP, &ndlp->nlp_flag);
5199 }
5200
5201 /* The node has an outstanding reference for the unreg. Now
5202 * that the LOGO action and cleanup are finished, release
5203 * resources.
5204 */
5205 lpfc_nlp_put(ndlp);
5206 mempool_free(pmb, phba->mbox_mem_pool);
5207}
5208
5209/*
5210 * Sets the mailbox completion handler to be used for the
5211 * unreg_rpi command. The handler varies based on the state of
5212 * the port and what will be happening to the rpi next.
5213 */
5214static void
5215lpfc_set_unreg_login_mbx_cmpl(struct lpfc_hba *phba, struct lpfc_vport *vport,
5216 struct lpfc_nodelist *ndlp, LPFC_MBOXQ_t *mbox)
5217{
5218 /* Driver always gets a reference on the mailbox job
5219 * in support of async jobs.
5220 */
5221 mbox->ctx_ndlp = lpfc_nlp_get(ndlp);
5222 if (!mbox->ctx_ndlp)
5223 return;
5224
5225 if (test_bit(NLP_ISSUE_LOGO, &ndlp->nlp_flag)) {
5226 mbox->mbox_cmpl = lpfc_nlp_logo_unreg;
5227 } else if (phba->sli_rev == LPFC_SLI_REV4 &&
5228 !test_bit(FC_UNLOADING, &vport->load_flag) &&
5229 (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) >=
5230 LPFC_SLI_INTF_IF_TYPE_2) &&
5231 (kref_read(&ndlp->kref) > 0)) {
5232 mbox->mbox_cmpl = lpfc_sli4_unreg_rpi_cmpl_clr;
5233 } else {
5234 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
5235 }
5236}
5237
5238/*
5239 * Free rpi associated with LPFC_NODELIST entry.
5240 * This routine is called if the driver initiates a LOGO that completes
5241 * successfully, and we are waiting to PLOGI back to the remote NPort.
5242 * In addition, it is called after we receive and unsolicated ELS cmd,
5243 * send back a rsp, the rsp completes and we are waiting to PLOGI back
5244 * to the remote NPort.
5245 */
5246int
5247lpfc_unreg_rpi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
5248{
5249 struct lpfc_hba *phba = vport->phba;
5250 LPFC_MBOXQ_t *mbox;
5251 int rc, acc_plogi = 1;
5252 uint16_t rpi;
5253
5254 if (test_bit(NLP_RPI_REGISTERED, &ndlp->nlp_flag) ||
5255 test_bit(NLP_REG_LOGIN_SEND, &ndlp->nlp_flag)) {
5256 if (test_bit(NLP_REG_LOGIN_SEND, &ndlp->nlp_flag))
5257 lpfc_printf_vlog(vport, KERN_INFO,
5258 LOG_NODE | LOG_DISCOVERY,
5259 "3366 RPI x%x needs to be "
5260 "unregistered nlp_flag x%lx "
5261 "did x%x\n",
5262 ndlp->nlp_rpi, ndlp->nlp_flag,
5263 ndlp->nlp_DID);
5264
5265 /* If there is already an UNREG in progress for this ndlp,
5266 * no need to queue up another one.
5267 */
5268 if (test_bit(NLP_UNREG_INP, &ndlp->nlp_flag)) {
5269 lpfc_printf_vlog(vport, KERN_INFO,
5270 LOG_NODE | LOG_DISCOVERY,
5271 "1436 unreg_rpi SKIP UNREG x%x on "
5272 "NPort x%x deferred x%x flg x%lx "
5273 "Data: x%px\n",
5274 ndlp->nlp_rpi, ndlp->nlp_DID,
5275 ndlp->nlp_defer_did,
5276 ndlp->nlp_flag, ndlp);
5277 goto out;
5278 }
5279
5280 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
5281 if (mbox) {
5282 /* SLI4 ports require the physical rpi value. */
5283 rpi = ndlp->nlp_rpi;
5284 if (phba->sli_rev == LPFC_SLI_REV4)
5285 rpi = phba->sli4_hba.rpi_ids[ndlp->nlp_rpi];
5286
5287 lpfc_unreg_login(phba, vport->vpi, rpi, mbox);
5288 mbox->vport = vport;
5289 lpfc_set_unreg_login_mbx_cmpl(phba, vport, ndlp, mbox);
5290 if (!mbox->ctx_ndlp) {
5291 mempool_free(mbox, phba->mbox_mem_pool);
5292 return 1;
5293 }
5294
5295 /* Accept PLOGIs after unreg_rpi_cmpl. */
5296 if (mbox->mbox_cmpl == lpfc_sli4_unreg_rpi_cmpl_clr)
5297 acc_plogi = 0;
5298
5299 if (!test_bit(FC_OFFLINE_MODE, &vport->fc_flag))
5300 set_bit(NLP_UNREG_INP, &ndlp->nlp_flag);
5301
5302 lpfc_printf_vlog(vport, KERN_INFO,
5303 LOG_NODE | LOG_DISCOVERY,
5304 "1433 unreg_rpi UNREG x%x on "
5305 "NPort x%x deferred flg x%lx "
5306 "Data:x%px\n",
5307 ndlp->nlp_rpi, ndlp->nlp_DID,
5308 ndlp->nlp_flag, ndlp);
5309
5310 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
5311 if (rc == MBX_NOT_FINISHED) {
5312 clear_bit(NLP_UNREG_INP, &ndlp->nlp_flag);
5313 mempool_free(mbox, phba->mbox_mem_pool);
5314 acc_plogi = 1;
5315 lpfc_nlp_put(ndlp);
5316 }
5317 } else {
5318 lpfc_printf_vlog(vport, KERN_INFO,
5319 LOG_NODE | LOG_DISCOVERY,
5320 "1444 Failed to allocate mempool "
5321 "unreg_rpi UNREG x%x, "
5322 "DID x%x, flag x%lx, "
5323 "ndlp x%px\n",
5324 ndlp->nlp_rpi, ndlp->nlp_DID,
5325 ndlp->nlp_flag, ndlp);
5326
5327 /* Because mempool_alloc failed, we
5328 * will issue a LOGO here and keep the rpi alive if
5329 * not unloading.
5330 */
5331 if (!test_bit(FC_UNLOADING, &vport->load_flag)) {
5332 clear_bit(NLP_UNREG_INP, &ndlp->nlp_flag);
5333 lpfc_issue_els_logo(vport, ndlp, 0);
5334 ndlp->nlp_prev_state = ndlp->nlp_state;
5335 lpfc_nlp_set_state(vport, ndlp,
5336 NLP_STE_NPR_NODE);
5337 }
5338
5339 return 1;
5340 }
5341 lpfc_no_rpi(phba, ndlp);
5342out:
5343 if (phba->sli_rev != LPFC_SLI_REV4)
5344 ndlp->nlp_rpi = 0;
5345 clear_bit(NLP_RPI_REGISTERED, &ndlp->nlp_flag);
5346 clear_bit(NLP_NPR_ADISC, &ndlp->nlp_flag);
5347 if (acc_plogi)
5348 clear_bit(NLP_LOGO_ACC, &ndlp->nlp_flag);
5349 memset(&ndlp->nlp_enc_info, 0, sizeof(ndlp->nlp_enc_info));
5350 return 1;
5351 }
5352 clear_bit(NLP_LOGO_ACC, &ndlp->nlp_flag);
5353 return 0;
5354}
5355
5356/**
5357 * lpfc_unreg_hba_rpis - Unregister rpis registered to the hba.
5358 * @phba: pointer to lpfc hba data structure.
5359 *
5360 * This routine is invoked to unregister all the currently registered RPIs
5361 * to the HBA.
5362 **/
5363void
5364lpfc_unreg_hba_rpis(struct lpfc_hba *phba)
5365{
5366 struct lpfc_vport **vports;
5367 struct lpfc_nodelist *ndlp;
5368 int i;
5369 unsigned long iflags;
5370
5371 vports = lpfc_create_vport_work_array(phba);
5372 if (!vports) {
5373 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
5374 "2884 Vport array allocation failed \n");
5375 return;
5376 }
5377 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
5378 spin_lock_irqsave(&vports[i]->fc_nodes_list_lock, iflags);
5379 list_for_each_entry(ndlp, &vports[i]->fc_nodes, nlp_listp) {
5380 if (test_bit(NLP_RPI_REGISTERED, &ndlp->nlp_flag)) {
5381 /* The mempool_alloc might sleep */
5382 spin_unlock_irqrestore(&vports[i]->fc_nodes_list_lock,
5383 iflags);
5384 lpfc_unreg_rpi(vports[i], ndlp);
5385 spin_lock_irqsave(&vports[i]->fc_nodes_list_lock,
5386 iflags);
5387 }
5388 }
5389 spin_unlock_irqrestore(&vports[i]->fc_nodes_list_lock, iflags);
5390 }
5391 lpfc_destroy_vport_work_array(phba, vports);
5392}
5393
5394void
5395lpfc_unreg_all_rpis(struct lpfc_vport *vport)
5396{
5397 struct lpfc_hba *phba = vport->phba;
5398 LPFC_MBOXQ_t *mbox;
5399 int rc;
5400
5401 if (phba->sli_rev == LPFC_SLI_REV4) {
5402 lpfc_sli4_unreg_all_rpis(vport);
5403 return;
5404 }
5405
5406 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
5407 if (mbox) {
5408 lpfc_unreg_login(phba, vport->vpi, LPFC_UNREG_ALL_RPIS_VPORT,
5409 mbox);
5410 mbox->vport = vport;
5411 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
5412 mbox->ctx_ndlp = NULL;
5413 rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO);
5414 if (rc != MBX_TIMEOUT)
5415 mempool_free(mbox, phba->mbox_mem_pool);
5416
5417 if ((rc == MBX_TIMEOUT) || (rc == MBX_NOT_FINISHED))
5418 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
5419 "1836 Could not issue "
5420 "unreg_login(all_rpis) status %d\n",
5421 rc);
5422 }
5423}
5424
5425void
5426lpfc_unreg_default_rpis(struct lpfc_vport *vport)
5427{
5428 struct lpfc_hba *phba = vport->phba;
5429 LPFC_MBOXQ_t *mbox;
5430 int rc;
5431
5432 /* Unreg DID is an SLI3 operation. */
5433 if (phba->sli_rev > LPFC_SLI_REV3)
5434 return;
5435
5436 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
5437 if (mbox) {
5438 lpfc_unreg_did(phba, vport->vpi, LPFC_UNREG_ALL_DFLT_RPIS,
5439 mbox);
5440 mbox->vport = vport;
5441 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
5442 mbox->ctx_ndlp = NULL;
5443 rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO);
5444 if (rc != MBX_TIMEOUT)
5445 mempool_free(mbox, phba->mbox_mem_pool);
5446
5447 if ((rc == MBX_TIMEOUT) || (rc == MBX_NOT_FINISHED))
5448 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
5449 "1815 Could not issue "
5450 "unreg_did (default rpis) status %d\n",
5451 rc);
5452 }
5453}
5454
5455/*
5456 * Free resources associated with LPFC_NODELIST entry
5457 * so it can be freed.
5458 */
5459static int
5460lpfc_cleanup_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
5461{
5462 struct lpfc_hba *phba = vport->phba;
5463 LPFC_MBOXQ_t *mb, *nextmb;
5464
5465 /* Cleanup node for NPort <nlp_DID> */
5466 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
5467 "0900 Cleanup node for NPort x%x "
5468 "Data: x%lx x%x x%x\n",
5469 ndlp->nlp_DID, ndlp->nlp_flag,
5470 ndlp->nlp_state, ndlp->nlp_rpi);
5471 lpfc_dequeue_node(vport, ndlp);
5472
5473 /* Don't need to clean up REG_LOGIN64 cmds for Default RPI cleanup */
5474
5475 /* cleanup any ndlp on mbox q waiting for reglogin cmpl */
5476 if ((mb = phba->sli.mbox_active)) {
5477 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
5478 !(mb->mbox_flag & LPFC_MBX_IMED_UNREG) &&
5479 (ndlp == mb->ctx_ndlp)) {
5480 mb->ctx_ndlp = NULL;
5481 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
5482 }
5483 }
5484
5485 spin_lock_irq(&phba->hbalock);
5486 /* Cleanup REG_LOGIN completions which are not yet processed */
5487 list_for_each_entry(mb, &phba->sli.mboxq_cmpl, list) {
5488 if ((mb->u.mb.mbxCommand != MBX_REG_LOGIN64) ||
5489 (mb->mbox_flag & LPFC_MBX_IMED_UNREG) ||
5490 (ndlp != mb->ctx_ndlp))
5491 continue;
5492
5493 mb->ctx_ndlp = NULL;
5494 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
5495 }
5496
5497 list_for_each_entry_safe(mb, nextmb, &phba->sli.mboxq, list) {
5498 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
5499 !(mb->mbox_flag & LPFC_MBX_IMED_UNREG) &&
5500 (ndlp == mb->ctx_ndlp)) {
5501 list_del(&mb->list);
5502 lpfc_mbox_rsrc_cleanup(phba, mb, MBOX_THD_LOCKED);
5503
5504 /* Don't invoke lpfc_nlp_put. The driver is in
5505 * lpfc_nlp_release context.
5506 */
5507 }
5508 }
5509 spin_unlock_irq(&phba->hbalock);
5510
5511 lpfc_els_abort(phba, ndlp);
5512
5513 clear_bit(NLP_DELAY_TMO, &ndlp->nlp_flag);
5514
5515 ndlp->nlp_last_elscmd = 0;
5516 timer_delete_sync(&ndlp->nlp_delayfunc);
5517
5518 list_del_init(&ndlp->els_retry_evt.evt_listp);
5519 list_del_init(&ndlp->dev_loss_evt.evt_listp);
5520 list_del_init(&ndlp->recovery_evt.evt_listp);
5521 lpfc_cleanup_vports_rrqs(vport, ndlp);
5522 return 0;
5523}
5524
5525static int
5526lpfc_matchdid(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
5527 uint32_t did)
5528{
5529 D_ID mydid, ndlpdid, matchdid;
5530
5531 if (did == Bcast_DID)
5532 return 0;
5533
5534 /* First check for Direct match */
5535 if (ndlp->nlp_DID == did)
5536 return 1;
5537
5538 /* Next check for area/domain identically equals 0 match */
5539 mydid.un.word = vport->fc_myDID;
5540 if ((mydid.un.b.domain == 0) && (mydid.un.b.area == 0)) {
5541 return 0;
5542 }
5543
5544 matchdid.un.word = did;
5545 ndlpdid.un.word = ndlp->nlp_DID;
5546 if (matchdid.un.b.id == ndlpdid.un.b.id) {
5547 if ((mydid.un.b.domain == matchdid.un.b.domain) &&
5548 (mydid.un.b.area == matchdid.un.b.area)) {
5549 /* This code is supposed to match the ID
5550 * for a private loop device that is
5551 * connect to fl_port. But we need to
5552 * check that the port did not just go
5553 * from pt2pt to fabric or we could end
5554 * up matching ndlp->nlp_DID 000001 to
5555 * fabric DID 0x20101
5556 */
5557 if ((ndlpdid.un.b.domain == 0) &&
5558 (ndlpdid.un.b.area == 0)) {
5559 if (ndlpdid.un.b.id &&
5560 vport->phba->fc_topology ==
5561 LPFC_TOPOLOGY_LOOP)
5562 return 1;
5563 }
5564 return 0;
5565 }
5566
5567 matchdid.un.word = ndlp->nlp_DID;
5568 if ((mydid.un.b.domain == ndlpdid.un.b.domain) &&
5569 (mydid.un.b.area == ndlpdid.un.b.area)) {
5570 if ((matchdid.un.b.domain == 0) &&
5571 (matchdid.un.b.area == 0)) {
5572 if (matchdid.un.b.id)
5573 return 1;
5574 }
5575 }
5576 }
5577 return 0;
5578}
5579
5580/* Search for a nodelist entry */
5581static struct lpfc_nodelist *
5582__lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did)
5583{
5584 struct lpfc_nodelist *ndlp;
5585 struct lpfc_nodelist *np = NULL;
5586 uint32_t data1;
5587
5588 list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
5589 if (lpfc_matchdid(vport, ndlp, did)) {
5590 data1 = (((uint32_t)ndlp->nlp_state << 24) |
5591 ((uint32_t)ndlp->nlp_xri << 16) |
5592 ((uint32_t)ndlp->nlp_type << 8)
5593 );
5594 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE_VERBOSE,
5595 "0929 FIND node DID "
5596 "Data: x%px x%x x%lx x%x x%x x%px\n",
5597 ndlp, ndlp->nlp_DID,
5598 ndlp->nlp_flag, data1, ndlp->nlp_rpi,
5599 ndlp->active_rrqs_xri_bitmap);
5600
5601 /* Check for new or potentially stale node */
5602 if (ndlp->nlp_state != NLP_STE_UNUSED_NODE)
5603 return ndlp;
5604 np = ndlp;
5605 }
5606 }
5607
5608 if (!np)
5609 /* FIND node did <did> NOT FOUND */
5610 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
5611 "0932 FIND node did x%x NOT FOUND.\n", did);
5612
5613 return np;
5614}
5615
5616struct lpfc_nodelist *
5617lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did)
5618{
5619 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
5620 struct lpfc_nodelist *ndlp;
5621 unsigned long iflags;
5622
5623 spin_lock_irqsave(shost->host_lock, iflags);
5624 ndlp = __lpfc_findnode_did(vport, did);
5625 spin_unlock_irqrestore(shost->host_lock, iflags);
5626 return ndlp;
5627}
5628
5629struct lpfc_nodelist *
5630lpfc_findnode_mapped(struct lpfc_vport *vport)
5631{
5632 struct lpfc_nodelist *ndlp;
5633 uint32_t data1;
5634 unsigned long iflags;
5635
5636 spin_lock_irqsave(&vport->fc_nodes_list_lock, iflags);
5637
5638 list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
5639 if (ndlp->nlp_state == NLP_STE_UNMAPPED_NODE ||
5640 ndlp->nlp_state == NLP_STE_MAPPED_NODE) {
5641 data1 = (((uint32_t)ndlp->nlp_state << 24) |
5642 ((uint32_t)ndlp->nlp_xri << 16) |
5643 ((uint32_t)ndlp->nlp_type << 8) |
5644 ((uint32_t)ndlp->nlp_rpi & 0xff));
5645 spin_unlock_irqrestore(&vport->fc_nodes_list_lock,
5646 iflags);
5647 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE_VERBOSE,
5648 "2025 FIND node DID MAPPED "
5649 "Data: x%px x%x x%lx x%x x%px\n",
5650 ndlp, ndlp->nlp_DID,
5651 ndlp->nlp_flag, data1,
5652 ndlp->active_rrqs_xri_bitmap);
5653 return ndlp;
5654 }
5655 }
5656 spin_unlock_irqrestore(&vport->fc_nodes_list_lock, iflags);
5657
5658 /* FIND node did <did> NOT FOUND */
5659 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
5660 "2026 FIND mapped did NOT FOUND.\n");
5661 return NULL;
5662}
5663
5664struct lpfc_nodelist *
5665lpfc_setup_disc_node(struct lpfc_vport *vport, uint32_t did)
5666{
5667 struct lpfc_nodelist *ndlp;
5668
5669 ndlp = lpfc_findnode_did(vport, did);
5670 if (!ndlp) {
5671 if (vport->phba->nvmet_support)
5672 return NULL;
5673 if (test_bit(FC_RSCN_MODE, &vport->fc_flag) &&
5674 lpfc_rscn_payload_check(vport, did) == 0)
5675 return NULL;
5676 ndlp = lpfc_nlp_init(vport, did);
5677 if (!ndlp)
5678 return NULL;
5679 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
5680
5681 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
5682 "6453 Setup New Node 2B_DISC x%x "
5683 "Data:x%lx x%x x%lx\n",
5684 ndlp->nlp_DID, ndlp->nlp_flag,
5685 ndlp->nlp_state, vport->fc_flag);
5686
5687 set_bit(NLP_NPR_2B_DISC, &ndlp->nlp_flag);
5688 return ndlp;
5689 }
5690
5691 /* The NVME Target does not want to actively manage an rport.
5692 * The goal is to allow the target to reset its state and clear
5693 * pending IO in preparation for the initiator to recover.
5694 */
5695 if (test_bit(FC_RSCN_MODE, &vport->fc_flag) &&
5696 !test_bit(FC_NDISC_ACTIVE, &vport->fc_flag)) {
5697 if (lpfc_rscn_payload_check(vport, did)) {
5698
5699 /* Since this node is marked for discovery,
5700 * delay timeout is not needed.
5701 */
5702 lpfc_cancel_retry_delay_tmo(vport, ndlp);
5703
5704 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
5705 "6455 Setup RSCN Node 2B_DISC x%x "
5706 "Data:x%lx x%x x%lx\n",
5707 ndlp->nlp_DID, ndlp->nlp_flag,
5708 ndlp->nlp_state, vport->fc_flag);
5709
5710 /* NVME Target mode waits until rport is known to be
5711 * impacted by the RSCN before it transitions. No
5712 * active management - just go to NPR provided the
5713 * node had a valid login.
5714 */
5715 if (vport->phba->nvmet_support)
5716 return ndlp;
5717
5718 if (ndlp->nlp_state > NLP_STE_UNUSED_NODE &&
5719 ndlp->nlp_state <= NLP_STE_PRLI_ISSUE) {
5720 lpfc_disc_state_machine(vport, ndlp, NULL,
5721 NLP_EVT_DEVICE_RECOVERY);
5722 }
5723
5724 set_bit(NLP_NPR_2B_DISC, &ndlp->nlp_flag);
5725 } else {
5726 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
5727 "6456 Skip Setup RSCN Node x%x "
5728 "Data:x%lx x%x x%lx\n",
5729 ndlp->nlp_DID, ndlp->nlp_flag,
5730 ndlp->nlp_state, vport->fc_flag);
5731 ndlp = NULL;
5732 }
5733 } else {
5734 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
5735 "6457 Setup Active Node 2B_DISC x%x "
5736 "Data:x%lx x%x x%lx\n",
5737 ndlp->nlp_DID, ndlp->nlp_flag,
5738 ndlp->nlp_state, vport->fc_flag);
5739
5740 /* If the initiator received a PLOGI from this NPort or if the
5741 * initiator is already in the process of discovery on it,
5742 * there's no need to try to discover it again.
5743 */
5744 if (ndlp->nlp_state == NLP_STE_ADISC_ISSUE ||
5745 ndlp->nlp_state == NLP_STE_PLOGI_ISSUE ||
5746 (!vport->phba->nvmet_support &&
5747 test_bit(NLP_RCV_PLOGI, &ndlp->nlp_flag)))
5748 return NULL;
5749
5750 if (vport->phba->nvmet_support)
5751 return ndlp;
5752
5753 /* Moving to NPR state clears unsolicited flags and
5754 * allows for rediscovery
5755 */
5756 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
5757 set_bit(NLP_NPR_2B_DISC, &ndlp->nlp_flag);
5758 }
5759 return ndlp;
5760}
5761
5762/* Build a list of nodes to discover based on the loopmap */
5763void
5764lpfc_disc_list_loopmap(struct lpfc_vport *vport)
5765{
5766 struct lpfc_hba *phba = vport->phba;
5767 int j;
5768 uint32_t alpa, index;
5769
5770 if (!lpfc_is_link_up(phba))
5771 return;
5772
5773 if (phba->fc_topology != LPFC_TOPOLOGY_LOOP)
5774 return;
5775
5776 /* Check for loop map present or not */
5777 if (phba->alpa_map[0]) {
5778 for (j = 1; j <= phba->alpa_map[0]; j++) {
5779 alpa = phba->alpa_map[j];
5780 if (((vport->fc_myDID & 0xff) == alpa) || (alpa == 0))
5781 continue;
5782 lpfc_setup_disc_node(vport, alpa);
5783 }
5784 } else {
5785 /* No alpamap, so try all alpa's */
5786 for (j = 0; j < FC_MAXLOOP; j++) {
5787 /* If cfg_scan_down is set, start from highest
5788 * ALPA (0xef) to lowest (0x1).
5789 */
5790 if (vport->cfg_scan_down)
5791 index = j;
5792 else
5793 index = FC_MAXLOOP - j - 1;
5794 alpa = lpfcAlpaArray[index];
5795 if ((vport->fc_myDID & 0xff) == alpa)
5796 continue;
5797 lpfc_setup_disc_node(vport, alpa);
5798 }
5799 }
5800 return;
5801}
5802
5803/* SLI3 only */
5804void
5805lpfc_issue_clear_la(struct lpfc_hba *phba, struct lpfc_vport *vport)
5806{
5807 LPFC_MBOXQ_t *mbox;
5808 struct lpfc_sli *psli = &phba->sli;
5809 struct lpfc_sli_ring *extra_ring = &psli->sli3_ring[LPFC_EXTRA_RING];
5810 struct lpfc_sli_ring *fcp_ring = &psli->sli3_ring[LPFC_FCP_RING];
5811 int rc;
5812
5813 /*
5814 * if it's not a physical port or if we already send
5815 * clear_la then don't send it.
5816 */
5817 if ((phba->link_state >= LPFC_CLEAR_LA) ||
5818 (vport->port_type != LPFC_PHYSICAL_PORT) ||
5819 (phba->sli_rev == LPFC_SLI_REV4))
5820 return;
5821
5822 /* Link up discovery */
5823 if ((mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL)) != NULL) {
5824 phba->link_state = LPFC_CLEAR_LA;
5825 lpfc_clear_la(phba, mbox);
5826 mbox->mbox_cmpl = lpfc_mbx_cmpl_clear_la;
5827 mbox->vport = vport;
5828 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
5829 if (rc == MBX_NOT_FINISHED) {
5830 mempool_free(mbox, phba->mbox_mem_pool);
5831 lpfc_disc_flush_list(vport);
5832 extra_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
5833 fcp_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
5834 phba->link_state = LPFC_HBA_ERROR;
5835 }
5836 }
5837}
5838
5839/* Reg_vpi to tell firmware to resume normal operations */
5840void
5841lpfc_issue_reg_vpi(struct lpfc_hba *phba, struct lpfc_vport *vport)
5842{
5843 LPFC_MBOXQ_t *regvpimbox;
5844
5845 regvpimbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
5846 if (regvpimbox) {
5847 lpfc_reg_vpi(vport, regvpimbox);
5848 regvpimbox->mbox_cmpl = lpfc_mbx_cmpl_reg_vpi;
5849 regvpimbox->vport = vport;
5850 if (lpfc_sli_issue_mbox(phba, regvpimbox, MBX_NOWAIT)
5851 == MBX_NOT_FINISHED) {
5852 mempool_free(regvpimbox, phba->mbox_mem_pool);
5853 }
5854 }
5855}
5856
5857/* Start Link up / RSCN discovery on NPR nodes */
5858void
5859lpfc_disc_start(struct lpfc_vport *vport)
5860{
5861 struct lpfc_hba *phba = vport->phba;
5862 uint32_t num_sent;
5863 uint32_t clear_la_pending;
5864
5865 if (!lpfc_is_link_up(phba)) {
5866 lpfc_printf_vlog(vport, KERN_INFO, LOG_SLI,
5867 "3315 Link is not up %x\n",
5868 phba->link_state);
5869 return;
5870 }
5871
5872 if (phba->link_state == LPFC_CLEAR_LA)
5873 clear_la_pending = 1;
5874 else
5875 clear_la_pending = 0;
5876
5877 if (vport->port_state < LPFC_VPORT_READY)
5878 vport->port_state = LPFC_DISC_AUTH;
5879
5880 lpfc_set_disctmo(vport);
5881
5882 vport->fc_prevDID = vport->fc_myDID;
5883 vport->num_disc_nodes = 0;
5884
5885 /* Start Discovery state <hba_state> */
5886 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
5887 "0202 Start Discovery port state x%x "
5888 "flg x%lx Data: x%x x%x x%x\n",
5889 vport->port_state, vport->fc_flag,
5890 atomic_read(&vport->fc_plogi_cnt),
5891 atomic_read(&vport->fc_adisc_cnt),
5892 atomic_read(&vport->fc_npr_cnt));
5893
5894 /* First do ADISCs - if any */
5895 num_sent = lpfc_els_disc_adisc(vport);
5896
5897 if (num_sent)
5898 return;
5899
5900 /* Register the VPI for SLI3, NPIV only. */
5901 if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
5902 !test_bit(FC_PT2PT, &vport->fc_flag) &&
5903 !test_bit(FC_RSCN_MODE, &vport->fc_flag) &&
5904 (phba->sli_rev < LPFC_SLI_REV4)) {
5905 lpfc_issue_clear_la(phba, vport);
5906 lpfc_issue_reg_vpi(phba, vport);
5907 return;
5908 }
5909
5910 /*
5911 * For SLI2, we need to set port_state to READY and continue
5912 * discovery.
5913 */
5914 if (vport->port_state < LPFC_VPORT_READY && !clear_la_pending) {
5915 /* If we get here, there is nothing to ADISC */
5916 lpfc_issue_clear_la(phba, vport);
5917
5918 if (!test_bit(FC_ABORT_DISCOVERY, &vport->fc_flag)) {
5919 vport->num_disc_nodes = 0;
5920 /* go thru NPR nodes and issue ELS PLOGIs */
5921 if (atomic_read(&vport->fc_npr_cnt))
5922 lpfc_els_disc_plogi(vport);
5923
5924 if (!vport->num_disc_nodes) {
5925 clear_bit(FC_NDISC_ACTIVE, &vport->fc_flag);
5926 lpfc_can_disctmo(vport);
5927 }
5928 }
5929 vport->port_state = LPFC_VPORT_READY;
5930 } else {
5931 /* Next do PLOGIs - if any */
5932 num_sent = lpfc_els_disc_plogi(vport);
5933
5934 if (num_sent)
5935 return;
5936
5937 if (test_bit(FC_RSCN_MODE, &vport->fc_flag)) {
5938 /* Check to see if more RSCNs came in while we
5939 * were processing this one.
5940 */
5941 if (vport->fc_rscn_id_cnt == 0 &&
5942 !test_bit(FC_RSCN_DISCOVERY, &vport->fc_flag)) {
5943 clear_bit(FC_RSCN_MODE, &vport->fc_flag);
5944 lpfc_can_disctmo(vport);
5945 } else {
5946 lpfc_els_handle_rscn(vport);
5947 }
5948 }
5949 }
5950 return;
5951}
5952
5953/*
5954 * Ignore completion for all IOCBs on tx and txcmpl queue for ELS
5955 * ring the match the sppecified nodelist.
5956 */
5957static void
5958lpfc_free_tx(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
5959{
5960 LIST_HEAD(completions);
5961 struct lpfc_iocbq *iocb, *next_iocb;
5962 struct lpfc_sli_ring *pring;
5963 u32 ulp_command;
5964
5965 pring = lpfc_phba_elsring(phba);
5966 if (unlikely(!pring))
5967 return;
5968
5969 /* Error matching iocb on txq or txcmplq
5970 * First check the txq.
5971 */
5972 spin_lock_irq(&phba->hbalock);
5973 list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
5974 if (iocb->ndlp != ndlp)
5975 continue;
5976
5977 ulp_command = get_job_cmnd(phba, iocb);
5978
5979 if (ulp_command == CMD_ELS_REQUEST64_CR ||
5980 ulp_command == CMD_XMIT_ELS_RSP64_CX) {
5981
5982 list_move_tail(&iocb->list, &completions);
5983 }
5984 }
5985
5986 /* Next check the txcmplq */
5987 list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) {
5988 if (iocb->ndlp != ndlp)
5989 continue;
5990
5991 ulp_command = get_job_cmnd(phba, iocb);
5992
5993 if (ulp_command == CMD_ELS_REQUEST64_CR ||
5994 ulp_command == CMD_XMIT_ELS_RSP64_CX) {
5995 lpfc_sli_issue_abort_iotag(phba, pring, iocb, NULL);
5996 }
5997 }
5998 spin_unlock_irq(&phba->hbalock);
5999
6000 /* Make sure HBA is alive */
6001 lpfc_issue_hb_tmo(phba);
6002
6003 /* Cancel all the IOCBs from the completions list */
6004 lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
6005 IOERR_SLI_ABORTED);
6006}
6007
6008static void
6009lpfc_disc_flush_list(struct lpfc_vport *vport)
6010{
6011 struct lpfc_nodelist *ndlp, *next_ndlp;
6012 struct lpfc_hba *phba = vport->phba;
6013
6014 if (atomic_read(&vport->fc_plogi_cnt) ||
6015 atomic_read(&vport->fc_adisc_cnt)) {
6016 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes,
6017 nlp_listp) {
6018 if (ndlp->nlp_state == NLP_STE_PLOGI_ISSUE ||
6019 ndlp->nlp_state == NLP_STE_ADISC_ISSUE) {
6020 lpfc_free_tx(phba, ndlp);
6021 }
6022 }
6023 }
6024}
6025
6026/*
6027 * lpfc_notify_xport_npr - notifies xport of node disappearance
6028 * @vport: Pointer to Virtual Port object.
6029 *
6030 * Transitions all ndlps to NPR state. When lpfc_nlp_set_state
6031 * calls lpfc_nlp_state_cleanup, the ndlp->rport is unregistered
6032 * and transport notified that the node is gone.
6033 * Return Code:
6034 * none
6035 */
6036static void
6037lpfc_notify_xport_npr(struct lpfc_vport *vport)
6038{
6039 struct lpfc_nodelist *ndlp, *next_ndlp;
6040
6041 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes,
6042 nlp_listp) {
6043 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
6044 }
6045}
6046void
6047lpfc_cleanup_discovery_resources(struct lpfc_vport *vport)
6048{
6049 lpfc_els_flush_rscn(vport);
6050 lpfc_els_flush_cmd(vport);
6051 lpfc_disc_flush_list(vport);
6052 if (pci_channel_offline(vport->phba->pcidev))
6053 lpfc_notify_xport_npr(vport);
6054}
6055
6056/*****************************************************************************/
6057/*
6058 * NAME: lpfc_disc_timeout
6059 *
6060 * FUNCTION: Fibre Channel driver discovery timeout routine.
6061 *
6062 * EXECUTION ENVIRONMENT: interrupt only
6063 *
6064 * CALLED FROM:
6065 * Timer function
6066 *
6067 * RETURNS:
6068 * none
6069 */
6070/*****************************************************************************/
6071void
6072lpfc_disc_timeout(struct timer_list *t)
6073{
6074 struct lpfc_vport *vport = timer_container_of(vport, t, fc_disctmo);
6075 struct lpfc_hba *phba = vport->phba;
6076 uint32_t tmo_posted;
6077 unsigned long flags = 0;
6078
6079 if (unlikely(!phba))
6080 return;
6081
6082 spin_lock_irqsave(&vport->work_port_lock, flags);
6083 tmo_posted = vport->work_port_events & WORKER_DISC_TMO;
6084 if (!tmo_posted)
6085 vport->work_port_events |= WORKER_DISC_TMO;
6086 spin_unlock_irqrestore(&vport->work_port_lock, flags);
6087
6088 if (!tmo_posted)
6089 lpfc_worker_wake_up(phba);
6090 return;
6091}
6092
6093static void
6094lpfc_disc_timeout_handler(struct lpfc_vport *vport)
6095{
6096 struct lpfc_hba *phba = vport->phba;
6097 struct lpfc_sli *psli = &phba->sli;
6098 struct lpfc_nodelist *ndlp, *next_ndlp;
6099 LPFC_MBOXQ_t *initlinkmbox;
6100 int rc, clrlaerr = 0;
6101
6102 if (!test_and_clear_bit(FC_DISC_TMO, &vport->fc_flag))
6103 return;
6104
6105 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
6106 "disc timeout: state:x%x rtry:x%x flg:x%x",
6107 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
6108
6109 switch (vport->port_state) {
6110
6111 case LPFC_LOCAL_CFG_LINK:
6112 /*
6113 * port_state is identically LPFC_LOCAL_CFG_LINK while
6114 * waiting for FAN timeout
6115 */
6116 lpfc_printf_vlog(vport, KERN_WARNING, LOG_DISCOVERY,
6117 "0221 FAN timeout\n");
6118
6119 /* Start discovery by sending FLOGI, clean up old rpis */
6120 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes,
6121 nlp_listp) {
6122 if (ndlp->nlp_state != NLP_STE_NPR_NODE)
6123 continue;
6124 if (ndlp->nlp_type & NLP_FABRIC) {
6125 /* Clean up the ndlp on Fabric connections */
6126 lpfc_drop_node(vport, ndlp);
6127
6128 } else if (!test_bit(NLP_NPR_ADISC, &ndlp->nlp_flag)) {
6129 /* Fail outstanding IO now since device
6130 * is marked for PLOGI.
6131 */
6132 lpfc_unreg_rpi(vport, ndlp);
6133 }
6134 }
6135 if (vport->port_state != LPFC_FLOGI) {
6136 if (phba->sli_rev <= LPFC_SLI_REV3)
6137 lpfc_initial_flogi(vport);
6138 else
6139 lpfc_issue_init_vfi(vport);
6140 return;
6141 }
6142 break;
6143
6144 case LPFC_FDISC:
6145 case LPFC_FLOGI:
6146 /* port_state is identically LPFC_FLOGI while waiting for FLOGI cmpl */
6147 /* Initial FLOGI timeout */
6148 lpfc_printf_vlog(vport, KERN_ERR,
6149 LOG_TRACE_EVENT,
6150 "0222 Initial %s timeout\n",
6151 vport->vpi ? "FDISC" : "FLOGI");
6152
6153 /* Assume no Fabric and go on with discovery.
6154 * Check for outstanding ELS FLOGI to abort.
6155 */
6156
6157 /* FLOGI failed, so just use loop map to make discovery list */
6158 lpfc_disc_list_loopmap(vport);
6159
6160 /* Start discovery */
6161 lpfc_disc_start(vport);
6162 break;
6163
6164 case LPFC_FABRIC_CFG_LINK:
6165 /* hba_state is identically LPFC_FABRIC_CFG_LINK while waiting for
6166 NameServer login */
6167 lpfc_printf_vlog(vport, KERN_ERR,
6168 LOG_TRACE_EVENT,
6169 "0223 Timeout while waiting for "
6170 "NameServer login\n");
6171 /* Next look for NameServer ndlp */
6172 ndlp = lpfc_findnode_did(vport, NameServer_DID);
6173 if (ndlp)
6174 lpfc_els_abort(phba, ndlp);
6175
6176 /* ReStart discovery */
6177 goto restart_disc;
6178
6179 case LPFC_NS_QRY:
6180 /* Check for wait for NameServer Rsp timeout */
6181 lpfc_printf_vlog(vport, KERN_ERR,
6182 LOG_TRACE_EVENT,
6183 "0224 NameServer Query timeout "
6184 "Data: x%x x%x\n",
6185 vport->fc_ns_retry, LPFC_MAX_NS_RETRY);
6186
6187 if (vport->fc_ns_retry < LPFC_MAX_NS_RETRY) {
6188 /* Try it one more time */
6189 vport->fc_ns_retry++;
6190 vport->gidft_inp = 0;
6191 rc = lpfc_issue_gidft(vport);
6192 if (rc == 0)
6193 break;
6194 }
6195 vport->fc_ns_retry = 0;
6196
6197restart_disc:
6198 /*
6199 * Discovery is over.
6200 * set port_state to PORT_READY if SLI2.
6201 * cmpl_reg_vpi will set port_state to READY for SLI3.
6202 */
6203 if (phba->sli_rev < LPFC_SLI_REV4) {
6204 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
6205 lpfc_issue_reg_vpi(phba, vport);
6206 else {
6207 lpfc_issue_clear_la(phba, vport);
6208 vport->port_state = LPFC_VPORT_READY;
6209 }
6210 }
6211
6212 /* Setup and issue mailbox INITIALIZE LINK command */
6213 initlinkmbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
6214 if (!initlinkmbox) {
6215 lpfc_printf_vlog(vport, KERN_ERR,
6216 LOG_TRACE_EVENT,
6217 "0206 Device Discovery "
6218 "completion error\n");
6219 phba->link_state = LPFC_HBA_ERROR;
6220 break;
6221 }
6222
6223 lpfc_linkdown(phba);
6224 lpfc_init_link(phba, initlinkmbox, phba->cfg_topology,
6225 phba->cfg_link_speed);
6226 initlinkmbox->u.mb.un.varInitLnk.lipsr_AL_PA = 0;
6227 initlinkmbox->vport = vport;
6228 initlinkmbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
6229 rc = lpfc_sli_issue_mbox(phba, initlinkmbox, MBX_NOWAIT);
6230 lpfc_set_loopback_flag(phba);
6231 if (rc == MBX_NOT_FINISHED)
6232 mempool_free(initlinkmbox, phba->mbox_mem_pool);
6233
6234 break;
6235
6236 case LPFC_DISC_AUTH:
6237 /* Node Authentication timeout */
6238 lpfc_printf_vlog(vport, KERN_ERR,
6239 LOG_TRACE_EVENT,
6240 "0227 Node Authentication timeout\n");
6241 lpfc_disc_flush_list(vport);
6242
6243 /*
6244 * set port_state to PORT_READY if SLI2.
6245 * cmpl_reg_vpi will set port_state to READY for SLI3.
6246 */
6247 if (phba->sli_rev < LPFC_SLI_REV4) {
6248 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
6249 lpfc_issue_reg_vpi(phba, vport);
6250 else { /* NPIV Not enabled */
6251 lpfc_issue_clear_la(phba, vport);
6252 vport->port_state = LPFC_VPORT_READY;
6253 }
6254 }
6255 break;
6256
6257 case LPFC_VPORT_READY:
6258 if (test_bit(FC_RSCN_MODE, &vport->fc_flag)) {
6259 lpfc_printf_vlog(vport, KERN_ERR,
6260 LOG_TRACE_EVENT,
6261 "0231 RSCN timeout Data: x%x "
6262 "x%x x%x x%x\n",
6263 vport->fc_ns_retry, LPFC_MAX_NS_RETRY,
6264 vport->port_state, vport->gidft_inp);
6265
6266 /* Cleanup any outstanding ELS commands */
6267 lpfc_els_flush_cmd(vport);
6268
6269 lpfc_els_flush_rscn(vport);
6270 lpfc_disc_flush_list(vport);
6271 }
6272 break;
6273
6274 default:
6275 lpfc_printf_vlog(vport, KERN_ERR,
6276 LOG_TRACE_EVENT,
6277 "0273 Unexpected discovery timeout, "
6278 "vport State x%x\n", vport->port_state);
6279 break;
6280 }
6281
6282 switch (phba->link_state) {
6283 case LPFC_CLEAR_LA:
6284 /* CLEAR LA timeout */
6285 lpfc_printf_vlog(vport, KERN_ERR,
6286 LOG_TRACE_EVENT,
6287 "0228 CLEAR LA timeout\n");
6288 clrlaerr = 1;
6289 break;
6290
6291 case LPFC_LINK_UP:
6292 lpfc_issue_clear_la(phba, vport);
6293 fallthrough;
6294 case LPFC_LINK_UNKNOWN:
6295 case LPFC_WARM_START:
6296 case LPFC_INIT_START:
6297 case LPFC_INIT_MBX_CMDS:
6298 case LPFC_LINK_DOWN:
6299 case LPFC_HBA_ERROR:
6300 lpfc_printf_vlog(vport, KERN_ERR,
6301 LOG_TRACE_EVENT,
6302 "0230 Unexpected timeout, hba link "
6303 "state x%x\n", phba->link_state);
6304 clrlaerr = 1;
6305 break;
6306
6307 case LPFC_HBA_READY:
6308 break;
6309 }
6310
6311 if (clrlaerr) {
6312 lpfc_disc_flush_list(vport);
6313 if (phba->sli_rev != LPFC_SLI_REV4) {
6314 psli->sli3_ring[(LPFC_EXTRA_RING)].flag &=
6315 ~LPFC_STOP_IOCB_EVENT;
6316 psli->sli3_ring[LPFC_FCP_RING].flag &=
6317 ~LPFC_STOP_IOCB_EVENT;
6318 }
6319 vport->port_state = LPFC_VPORT_READY;
6320 }
6321 return;
6322}
6323
6324/*
6325 * This routine handles processing a NameServer REG_LOGIN mailbox
6326 * command upon completion. It is setup in the LPFC_MBOXQ
6327 * as the completion routine when the command is
6328 * handed off to the SLI layer.
6329 */
6330void
6331lpfc_mbx_cmpl_fdmi_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
6332{
6333 MAILBOX_t *mb = &pmb->u.mb;
6334 struct lpfc_nodelist *ndlp = pmb->ctx_ndlp;
6335 struct lpfc_vport *vport = pmb->vport;
6336
6337 pmb->ctx_ndlp = NULL;
6338
6339 if (phba->sli_rev < LPFC_SLI_REV4)
6340 ndlp->nlp_rpi = mb->un.varWords[0];
6341 set_bit(NLP_RPI_REGISTERED, &ndlp->nlp_flag);
6342 ndlp->nlp_type |= NLP_FABRIC;
6343 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
6344 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE | LOG_DISCOVERY,
6345 "0004 rpi:%x DID:%x flg:%lx %d x%px\n",
6346 ndlp->nlp_rpi, ndlp->nlp_DID, ndlp->nlp_flag,
6347 kref_read(&ndlp->kref),
6348 ndlp);
6349 /*
6350 * Start issuing Fabric-Device Management Interface (FDMI) command to
6351 * 0xfffffa (FDMI well known port).
6352 * DHBA -> DPRT -> RHBA -> RPA (physical port)
6353 * DPRT -> RPRT (vports)
6354 */
6355 if (vport->port_type == LPFC_PHYSICAL_PORT) {
6356 phba->link_flag &= ~LS_CT_VEN_RPA; /* For extra Vendor RPA */
6357 lpfc_fdmi_cmd(vport, ndlp, SLI_MGMT_DHBA, 0);
6358 } else {
6359 lpfc_fdmi_cmd(vport, ndlp, SLI_MGMT_DPRT, 0);
6360 }
6361
6362
6363 /* decrement the node reference count held for this callback
6364 * function.
6365 */
6366 lpfc_nlp_put(ndlp);
6367 lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED);
6368 return;
6369}
6370
6371static int
6372lpfc_filter_by_rpi(struct lpfc_nodelist *ndlp, void *param)
6373{
6374 uint16_t *rpi = param;
6375
6376 return ndlp->nlp_rpi == *rpi;
6377}
6378
6379static int
6380lpfc_filter_by_wwpn(struct lpfc_nodelist *ndlp, void *param)
6381{
6382 return memcmp(&ndlp->nlp_portname, param,
6383 sizeof(ndlp->nlp_portname)) == 0;
6384}
6385
6386static struct lpfc_nodelist *
6387__lpfc_find_node(struct lpfc_vport *vport, node_filter filter, void *param)
6388{
6389 struct lpfc_nodelist *ndlp;
6390
6391 list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
6392 if (filter(ndlp, param)) {
6393 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE_VERBOSE,
6394 "3185 FIND node filter %ps DID "
6395 "ndlp x%px did x%x flg x%lx st x%x "
6396 "xri x%x type x%x rpi x%x\n",
6397 filter, ndlp, ndlp->nlp_DID,
6398 ndlp->nlp_flag, ndlp->nlp_state,
6399 ndlp->nlp_xri, ndlp->nlp_type,
6400 ndlp->nlp_rpi);
6401 return ndlp;
6402 }
6403 }
6404 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
6405 "3186 FIND node filter %ps NOT FOUND.\n", filter);
6406 return NULL;
6407}
6408
6409/*
6410 * This routine looks up the ndlp lists for the given RPI. If rpi found it
6411 * returns the node list element pointer else return NULL.
6412 */
6413struct lpfc_nodelist *
6414__lpfc_findnode_rpi(struct lpfc_vport *vport, uint16_t rpi)
6415{
6416 return __lpfc_find_node(vport, lpfc_filter_by_rpi, &rpi);
6417}
6418
6419/*
6420 * This routine looks up the ndlp lists for the given WWPN. If WWPN found it
6421 * returns the node element list pointer else return NULL.
6422 */
6423struct lpfc_nodelist *
6424lpfc_findnode_wwpn(struct lpfc_vport *vport, struct lpfc_name *wwpn)
6425{
6426 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
6427 struct lpfc_nodelist *ndlp;
6428
6429 spin_lock_irq(shost->host_lock);
6430 ndlp = __lpfc_find_node(vport, lpfc_filter_by_wwpn, wwpn);
6431 spin_unlock_irq(shost->host_lock);
6432 return ndlp;
6433}
6434
6435/*
6436 * This routine looks up the ndlp lists for the given RPI. If the rpi
6437 * is found, the routine returns the node element list pointer else
6438 * return NULL.
6439 */
6440struct lpfc_nodelist *
6441lpfc_findnode_rpi(struct lpfc_vport *vport, uint16_t rpi)
6442{
6443 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
6444 struct lpfc_nodelist *ndlp;
6445 unsigned long flags;
6446
6447 spin_lock_irqsave(shost->host_lock, flags);
6448 ndlp = __lpfc_findnode_rpi(vport, rpi);
6449 spin_unlock_irqrestore(shost->host_lock, flags);
6450 return ndlp;
6451}
6452
6453/**
6454 * lpfc_find_vport_by_vpid - Find a vport on a HBA through vport identifier
6455 * @phba: pointer to lpfc hba data structure.
6456 * @vpi: the physical host virtual N_Port identifier.
6457 *
6458 * This routine finds a vport on a HBA (referred by @phba) through a
6459 * @vpi. The function walks the HBA's vport list and returns the address
6460 * of the vport with the matching @vpi.
6461 *
6462 * Return code
6463 * NULL - No vport with the matching @vpi found
6464 * Otherwise - Address to the vport with the matching @vpi.
6465 **/
6466struct lpfc_vport *
6467lpfc_find_vport_by_vpid(struct lpfc_hba *phba, uint16_t vpi)
6468{
6469 struct lpfc_vport *vport;
6470 unsigned long flags;
6471 int i = 0;
6472
6473 /* The physical ports are always vpi 0 - translate is unnecessary. */
6474 if (vpi > 0) {
6475 /*
6476 * Translate the physical vpi to the logical vpi. The
6477 * vport stores the logical vpi.
6478 */
6479 for (i = 0; i <= phba->max_vpi; i++) {
6480 if (vpi == phba->vpi_ids[i])
6481 break;
6482 }
6483
6484 if (i > phba->max_vpi) {
6485 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
6486 "2936 Could not find Vport mapped "
6487 "to vpi %d\n", vpi);
6488 return NULL;
6489 }
6490 }
6491
6492 spin_lock_irqsave(&phba->port_list_lock, flags);
6493 list_for_each_entry(vport, &phba->port_list, listentry) {
6494 if (vport->vpi == i) {
6495 spin_unlock_irqrestore(&phba->port_list_lock, flags);
6496 return vport;
6497 }
6498 }
6499 spin_unlock_irqrestore(&phba->port_list_lock, flags);
6500 return NULL;
6501}
6502
6503struct lpfc_nodelist *
6504lpfc_nlp_init(struct lpfc_vport *vport, uint32_t did)
6505{
6506 struct lpfc_nodelist *ndlp;
6507 int rpi = LPFC_RPI_ALLOC_ERROR;
6508
6509 if (vport->phba->sli_rev == LPFC_SLI_REV4) {
6510 rpi = lpfc_sli4_alloc_rpi(vport->phba);
6511 if (rpi == LPFC_RPI_ALLOC_ERROR)
6512 return NULL;
6513 }
6514
6515 ndlp = mempool_alloc(vport->phba->nlp_mem_pool, GFP_KERNEL);
6516 if (!ndlp) {
6517 if (vport->phba->sli_rev == LPFC_SLI_REV4)
6518 lpfc_sli4_free_rpi(vport->phba, rpi);
6519 return NULL;
6520 }
6521
6522 memset(ndlp, 0, sizeof (struct lpfc_nodelist));
6523
6524 spin_lock_init(&ndlp->lock);
6525
6526 lpfc_initialize_node(vport, ndlp, did);
6527 INIT_LIST_HEAD(&ndlp->nlp_listp);
6528 if (vport->phba->sli_rev == LPFC_SLI_REV4) {
6529 ndlp->nlp_rpi = rpi;
6530 lpfc_printf_vlog(vport, KERN_INFO,
6531 LOG_ELS | LOG_NODE | LOG_DISCOVERY,
6532 "0007 Init New ndlp x%px, rpi:x%x DID:x%x "
6533 "flg:x%lx refcnt:%d\n",
6534 ndlp, ndlp->nlp_rpi, ndlp->nlp_DID,
6535 ndlp->nlp_flag, kref_read(&ndlp->kref));
6536
6537 ndlp->active_rrqs_xri_bitmap =
6538 mempool_alloc(vport->phba->active_rrq_pool,
6539 GFP_KERNEL);
6540 if (ndlp->active_rrqs_xri_bitmap)
6541 memset(ndlp->active_rrqs_xri_bitmap, 0,
6542 ndlp->phba->cfg_rrq_xri_bitmap_sz);
6543 }
6544
6545
6546
6547 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
6548 "node init: did:x%x",
6549 ndlp->nlp_DID, 0, 0);
6550
6551 return ndlp;
6552}
6553
6554/* This routine releases all resources associated with a specifc NPort's ndlp
6555 * and mempool_free's the nodelist.
6556 */
6557static void
6558lpfc_nlp_release(struct kref *kref)
6559{
6560 struct lpfc_nodelist *ndlp = container_of(kref, struct lpfc_nodelist,
6561 kref);
6562 struct lpfc_vport *vport = ndlp->vport;
6563
6564 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
6565 "node release: did:x%x flg:x%lx type:x%x",
6566 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
6567
6568 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
6569 "0279 %s: ndlp: x%px did %x refcnt:%d rpi:%x\n",
6570 __func__, ndlp, ndlp->nlp_DID,
6571 kref_read(&ndlp->kref), ndlp->nlp_rpi);
6572
6573 /* remove ndlp from action. */
6574 lpfc_cancel_retry_delay_tmo(vport, ndlp);
6575 lpfc_cleanup_node(vport, ndlp);
6576
6577 /* All nodes are initialized with an RPI that needs to be released
6578 * now. All references are gone and the node has been dequeued.
6579 */
6580 if (vport->phba->sli_rev == LPFC_SLI_REV4) {
6581 lpfc_sli4_free_rpi(vport->phba, ndlp->nlp_rpi);
6582 ndlp->nlp_rpi = LPFC_RPI_ALLOC_ERROR;
6583 }
6584
6585 /* The node is not freed back to memory, it is released to a pool so
6586 * the node fields need to be cleaned up.
6587 */
6588 ndlp->vport = NULL;
6589 ndlp->nlp_state = NLP_STE_FREED_NODE;
6590 ndlp->nlp_flag = 0;
6591 ndlp->fc4_xpt_flags = 0;
6592
6593 /* free ndlp memory for final ndlp release */
6594 if (ndlp->phba->sli_rev == LPFC_SLI_REV4)
6595 mempool_free(ndlp->active_rrqs_xri_bitmap,
6596 ndlp->phba->active_rrq_pool);
6597 mempool_free(ndlp, ndlp->phba->nlp_mem_pool);
6598}
6599
6600/* This routine bumps the reference count for a ndlp structure to ensure
6601 * that one discovery thread won't free a ndlp while another discovery thread
6602 * is using it.
6603 */
6604struct lpfc_nodelist *
6605lpfc_nlp_get(struct lpfc_nodelist *ndlp)
6606{
6607 unsigned long flags;
6608
6609 if (ndlp) {
6610 /* The check of ndlp usage to prevent incrementing the
6611 * ndlp reference count that is in the process of being
6612 * released.
6613 */
6614 spin_lock_irqsave(&ndlp->lock, flags);
6615 if (!kref_get_unless_zero(&ndlp->kref)) {
6616 spin_unlock_irqrestore(&ndlp->lock, flags);
6617 pr_info("0276 %s: NDLP x%px has zero reference count. "
6618 "Exiting\n", __func__, ndlp);
6619 return NULL;
6620 }
6621 spin_unlock_irqrestore(&ndlp->lock, flags);
6622 } else {
6623 WARN_ONCE(!ndlp, "**** %s, get ref on NULL ndlp!", __func__);
6624 }
6625
6626 return ndlp;
6627}
6628
6629/* This routine decrements the reference count for a ndlp structure. If the
6630 * count goes to 0, this indicates the associated nodelist should be freed.
6631 */
6632int
6633lpfc_nlp_put(struct lpfc_nodelist *ndlp)
6634{
6635 if (ndlp) {
6636 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
6637 "node put: did:x%x flg:x%lx refcnt:x%x",
6638 ndlp->nlp_DID, ndlp->nlp_flag,
6639 kref_read(&ndlp->kref));
6640 } else {
6641 WARN_ONCE(!ndlp, "**** %s, put ref on NULL ndlp!", __func__);
6642 }
6643
6644 return ndlp ? kref_put(&ndlp->kref, lpfc_nlp_release) : 0;
6645}
6646
6647/**
6648 * lpfc_fcf_inuse - Check if FCF can be unregistered.
6649 * @phba: Pointer to hba context object.
6650 *
6651 * This function iterate through all FC nodes associated
6652 * will all vports to check if there is any node with
6653 * fc_rports associated with it. If there is an fc_rport
6654 * associated with the node, then the node is either in
6655 * discovered state or its devloss_timer is pending.
6656 */
6657static int
6658lpfc_fcf_inuse(struct lpfc_hba *phba)
6659{
6660 struct lpfc_vport **vports;
6661 int i, ret = 0;
6662 struct lpfc_nodelist *ndlp;
6663 unsigned long iflags;
6664
6665 vports = lpfc_create_vport_work_array(phba);
6666
6667 /* If driver cannot allocate memory, indicate fcf is in use */
6668 if (!vports)
6669 return 1;
6670
6671 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
6672 /*
6673 * IF the CVL_RCVD bit is not set then we have sent the
6674 * flogi.
6675 * If dev_loss fires while we are waiting we do not want to
6676 * unreg the fcf.
6677 */
6678 if (!test_bit(FC_VPORT_CVL_RCVD, &vports[i]->fc_flag)) {
6679 ret = 1;
6680 goto out;
6681 }
6682 spin_lock_irqsave(&vports[i]->fc_nodes_list_lock, iflags);
6683 list_for_each_entry(ndlp, &vports[i]->fc_nodes, nlp_listp) {
6684 if (ndlp->rport &&
6685 (ndlp->rport->roles & FC_RPORT_ROLE_FCP_TARGET)) {
6686 ret = 1;
6687 spin_unlock_irqrestore(&vports[i]->fc_nodes_list_lock,
6688 iflags);
6689 goto out;
6690 } else if (test_bit(NLP_RPI_REGISTERED,
6691 &ndlp->nlp_flag)) {
6692 ret = 1;
6693 lpfc_printf_log(phba, KERN_INFO,
6694 LOG_NODE | LOG_DISCOVERY,
6695 "2624 RPI %x DID %x flag %lx "
6696 "still logged in\n",
6697 ndlp->nlp_rpi, ndlp->nlp_DID,
6698 ndlp->nlp_flag);
6699 }
6700 }
6701 spin_unlock_irqrestore(&vports[i]->fc_nodes_list_lock, iflags);
6702 }
6703out:
6704 lpfc_destroy_vport_work_array(phba, vports);
6705 return ret;
6706}
6707
6708/**
6709 * lpfc_unregister_vfi_cmpl - Completion handler for unreg vfi.
6710 * @phba: Pointer to hba context object.
6711 * @mboxq: Pointer to mailbox object.
6712 *
6713 * This function frees memory associated with the mailbox command.
6714 */
6715void
6716lpfc_unregister_vfi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
6717{
6718 struct lpfc_vport *vport = mboxq->vport;
6719
6720 if (mboxq->u.mb.mbxStatus) {
6721 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
6722 "2555 UNREG_VFI mbxStatus error x%x "
6723 "HBA state x%x\n",
6724 mboxq->u.mb.mbxStatus, vport->port_state);
6725 }
6726 clear_bit(FC_VFI_REGISTERED, &phba->pport->fc_flag);
6727 mempool_free(mboxq, phba->mbox_mem_pool);
6728 return;
6729}
6730
6731/**
6732 * lpfc_unregister_fcfi_cmpl - Completion handler for unreg fcfi.
6733 * @phba: Pointer to hba context object.
6734 * @mboxq: Pointer to mailbox object.
6735 *
6736 * This function frees memory associated with the mailbox command.
6737 */
6738static void
6739lpfc_unregister_fcfi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
6740{
6741 struct lpfc_vport *vport = mboxq->vport;
6742
6743 if (mboxq->u.mb.mbxStatus) {
6744 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
6745 "2550 UNREG_FCFI mbxStatus error x%x "
6746 "HBA state x%x\n",
6747 mboxq->u.mb.mbxStatus, vport->port_state);
6748 }
6749 mempool_free(mboxq, phba->mbox_mem_pool);
6750 return;
6751}
6752
6753/**
6754 * lpfc_unregister_fcf_prep - Unregister fcf record preparation
6755 * @phba: Pointer to hba context object.
6756 *
6757 * This function prepare the HBA for unregistering the currently registered
6758 * FCF from the HBA. It performs unregistering, in order, RPIs, VPIs, and
6759 * VFIs.
6760 */
6761int
6762lpfc_unregister_fcf_prep(struct lpfc_hba *phba)
6763{
6764 struct lpfc_vport **vports;
6765 struct lpfc_nodelist *ndlp;
6766 struct Scsi_Host *shost;
6767 int i = 0, rc;
6768
6769 /* Unregister RPIs */
6770 if (lpfc_fcf_inuse(phba))
6771 lpfc_unreg_hba_rpis(phba);
6772
6773 /* At this point, all discovery is aborted */
6774 phba->pport->port_state = LPFC_VPORT_UNKNOWN;
6775
6776 /* Unregister VPIs */
6777 vports = lpfc_create_vport_work_array(phba);
6778 if (vports && (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED))
6779 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
6780 /* Stop FLOGI/FDISC retries */
6781 ndlp = lpfc_findnode_did(vports[i], Fabric_DID);
6782 if (ndlp)
6783 lpfc_cancel_retry_delay_tmo(vports[i], ndlp);
6784 lpfc_cleanup_pending_mbox(vports[i]);
6785 if (phba->sli_rev == LPFC_SLI_REV4)
6786 lpfc_sli4_unreg_all_rpis(vports[i]);
6787 lpfc_mbx_unreg_vpi(vports[i]);
6788 shost = lpfc_shost_from_vport(vports[i]);
6789 spin_lock_irq(shost->host_lock);
6790 vports[i]->vpi_state &= ~LPFC_VPI_REGISTERED;
6791 spin_unlock_irq(shost->host_lock);
6792 set_bit(FC_VPORT_NEEDS_INIT_VPI, &vports[i]->fc_flag);
6793 }
6794 lpfc_destroy_vport_work_array(phba, vports);
6795 if (i == 0 && (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED))) {
6796 ndlp = lpfc_findnode_did(phba->pport, Fabric_DID);
6797 if (ndlp)
6798 lpfc_cancel_retry_delay_tmo(phba->pport, ndlp);
6799 lpfc_cleanup_pending_mbox(phba->pport);
6800 if (phba->sli_rev == LPFC_SLI_REV4)
6801 lpfc_sli4_unreg_all_rpis(phba->pport);
6802 lpfc_mbx_unreg_vpi(phba->pport);
6803 shost = lpfc_shost_from_vport(phba->pport);
6804 spin_lock_irq(shost->host_lock);
6805 phba->pport->vpi_state &= ~LPFC_VPI_REGISTERED;
6806 spin_unlock_irq(shost->host_lock);
6807 set_bit(FC_VPORT_NEEDS_INIT_VPI, &phba->pport->fc_flag);
6808 }
6809
6810 /* Cleanup any outstanding ELS commands */
6811 lpfc_els_flush_all_cmd(phba);
6812
6813 /* Unregister the physical port VFI */
6814 rc = lpfc_issue_unreg_vfi(phba->pport);
6815 return rc;
6816}
6817
6818/**
6819 * lpfc_sli4_unregister_fcf - Unregister currently registered FCF record
6820 * @phba: Pointer to hba context object.
6821 *
6822 * This function issues synchronous unregister FCF mailbox command to HBA to
6823 * unregister the currently registered FCF record. The driver does not reset
6824 * the driver FCF usage state flags.
6825 *
6826 * Return 0 if successfully issued, none-zero otherwise.
6827 */
6828int
6829lpfc_sli4_unregister_fcf(struct lpfc_hba *phba)
6830{
6831 LPFC_MBOXQ_t *mbox;
6832 int rc;
6833
6834 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
6835 if (!mbox) {
6836 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
6837 "2551 UNREG_FCFI mbox allocation failed"
6838 "HBA state x%x\n", phba->pport->port_state);
6839 return -ENOMEM;
6840 }
6841 lpfc_unreg_fcfi(mbox, phba->fcf.fcfi);
6842 mbox->vport = phba->pport;
6843 mbox->mbox_cmpl = lpfc_unregister_fcfi_cmpl;
6844 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
6845
6846 if (rc == MBX_NOT_FINISHED) {
6847 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
6848 "2552 Unregister FCFI command failed rc x%x "
6849 "HBA state x%x\n",
6850 rc, phba->pport->port_state);
6851 return -EINVAL;
6852 }
6853 return 0;
6854}
6855
6856/**
6857 * lpfc_unregister_fcf_rescan - Unregister currently registered fcf and rescan
6858 * @phba: Pointer to hba context object.
6859 *
6860 * This function unregisters the currently reigstered FCF. This function
6861 * also tries to find another FCF for discovery by rescan the HBA FCF table.
6862 */
6863void
6864lpfc_unregister_fcf_rescan(struct lpfc_hba *phba)
6865{
6866 int rc;
6867
6868 /* Preparation for unregistering fcf */
6869 rc = lpfc_unregister_fcf_prep(phba);
6870 if (rc) {
6871 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
6872 "2748 Failed to prepare for unregistering "
6873 "HBA's FCF record: rc=%d\n", rc);
6874 return;
6875 }
6876
6877 /* Now, unregister FCF record and reset HBA FCF state */
6878 rc = lpfc_sli4_unregister_fcf(phba);
6879 if (rc)
6880 return;
6881 /* Reset HBA FCF states after successful unregister FCF */
6882 spin_lock_irq(&phba->hbalock);
6883 phba->fcf.fcf_flag = 0;
6884 spin_unlock_irq(&phba->hbalock);
6885 phba->fcf.current_rec.flag = 0;
6886
6887 /*
6888 * If driver is not unloading, check if there is any other
6889 * FCF record that can be used for discovery.
6890 */
6891 if (test_bit(FC_UNLOADING, &phba->pport->load_flag) ||
6892 phba->link_state < LPFC_LINK_UP)
6893 return;
6894
6895 /* This is considered as the initial FCF discovery scan */
6896 spin_lock_irq(&phba->hbalock);
6897 phba->fcf.fcf_flag |= FCF_INIT_DISC;
6898 spin_unlock_irq(&phba->hbalock);
6899
6900 /* Reset FCF roundrobin bmask for new discovery */
6901 lpfc_sli4_clear_fcf_rr_bmask(phba);
6902
6903 rc = lpfc_sli4_fcf_scan_read_fcf_rec(phba, LPFC_FCOE_FCF_GET_FIRST);
6904
6905 if (rc) {
6906 spin_lock_irq(&phba->hbalock);
6907 phba->fcf.fcf_flag &= ~FCF_INIT_DISC;
6908 spin_unlock_irq(&phba->hbalock);
6909 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
6910 "2553 lpfc_unregister_unused_fcf failed "
6911 "to read FCF record HBA state x%x\n",
6912 phba->pport->port_state);
6913 }
6914}
6915
6916/**
6917 * lpfc_unregister_fcf - Unregister the currently registered fcf record
6918 * @phba: Pointer to hba context object.
6919 *
6920 * This function just unregisters the currently reigstered FCF. It does not
6921 * try to find another FCF for discovery.
6922 */
6923void
6924lpfc_unregister_fcf(struct lpfc_hba *phba)
6925{
6926 int rc;
6927
6928 /* Preparation for unregistering fcf */
6929 rc = lpfc_unregister_fcf_prep(phba);
6930 if (rc) {
6931 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
6932 "2749 Failed to prepare for unregistering "
6933 "HBA's FCF record: rc=%d\n", rc);
6934 return;
6935 }
6936
6937 /* Now, unregister FCF record and reset HBA FCF state */
6938 rc = lpfc_sli4_unregister_fcf(phba);
6939 if (rc)
6940 return;
6941 /* Set proper HBA FCF states after successful unregister FCF */
6942 spin_lock_irq(&phba->hbalock);
6943 phba->fcf.fcf_flag &= ~FCF_REGISTERED;
6944 spin_unlock_irq(&phba->hbalock);
6945}
6946
6947/**
6948 * lpfc_unregister_unused_fcf - Unregister FCF if all devices are disconnected.
6949 * @phba: Pointer to hba context object.
6950 *
6951 * This function check if there are any connected remote port for the FCF and
6952 * if all the devices are disconnected, this function unregister FCFI.
6953 * This function also tries to use another FCF for discovery.
6954 */
6955void
6956lpfc_unregister_unused_fcf(struct lpfc_hba *phba)
6957{
6958 /*
6959 * If HBA is not running in FIP mode, if HBA does not support
6960 * FCoE, if FCF discovery is ongoing, or if FCF has not been
6961 * registered, do nothing.
6962 */
6963 spin_lock_irq(&phba->hbalock);
6964 if (!test_bit(HBA_FCOE_MODE, &phba->hba_flag) ||
6965 !(phba->fcf.fcf_flag & FCF_REGISTERED) ||
6966 !test_bit(HBA_FIP_SUPPORT, &phba->hba_flag) ||
6967 (phba->fcf.fcf_flag & FCF_DISCOVERY) ||
6968 phba->pport->port_state == LPFC_FLOGI) {
6969 spin_unlock_irq(&phba->hbalock);
6970 return;
6971 }
6972 spin_unlock_irq(&phba->hbalock);
6973
6974 if (lpfc_fcf_inuse(phba))
6975 return;
6976
6977 lpfc_unregister_fcf_rescan(phba);
6978}
6979
6980/**
6981 * lpfc_read_fcf_conn_tbl - Create driver FCF connection table.
6982 * @phba: Pointer to hba context object.
6983 * @buff: Buffer containing the FCF connection table as in the config
6984 * region.
6985 * This function create driver data structure for the FCF connection
6986 * record table read from config region 23.
6987 */
6988static void
6989lpfc_read_fcf_conn_tbl(struct lpfc_hba *phba,
6990 uint8_t *buff)
6991{
6992 struct lpfc_fcf_conn_entry *conn_entry, *next_conn_entry;
6993 struct lpfc_fcf_conn_hdr *conn_hdr;
6994 struct lpfc_fcf_conn_rec *conn_rec;
6995 uint32_t record_count;
6996 int i;
6997
6998 /* Free the current connect table */
6999 list_for_each_entry_safe(conn_entry, next_conn_entry,
7000 &phba->fcf_conn_rec_list, list) {
7001 list_del_init(&conn_entry->list);
7002 kfree(conn_entry);
7003 }
7004
7005 conn_hdr = (struct lpfc_fcf_conn_hdr *) buff;
7006 record_count = conn_hdr->length * sizeof(uint32_t)/
7007 sizeof(struct lpfc_fcf_conn_rec);
7008
7009 conn_rec = (struct lpfc_fcf_conn_rec *)
7010 (buff + sizeof(struct lpfc_fcf_conn_hdr));
7011
7012 for (i = 0; i < record_count; i++) {
7013 if (!(conn_rec[i].flags & FCFCNCT_VALID))
7014 continue;
7015 conn_entry = kzalloc_obj(struct lpfc_fcf_conn_entry);
7016 if (!conn_entry) {
7017 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
7018 "2566 Failed to allocate connection"
7019 " table entry\n");
7020 return;
7021 }
7022
7023 memcpy(&conn_entry->conn_rec, &conn_rec[i],
7024 sizeof(struct lpfc_fcf_conn_rec));
7025 list_add_tail(&conn_entry->list,
7026 &phba->fcf_conn_rec_list);
7027 }
7028
7029 if (!list_empty(&phba->fcf_conn_rec_list)) {
7030 i = 0;
7031 list_for_each_entry(conn_entry, &phba->fcf_conn_rec_list,
7032 list) {
7033 conn_rec = &conn_entry->conn_rec;
7034 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
7035 "3345 FCF connection list rec[%02d]: "
7036 "flags:x%04x, vtag:x%04x, "
7037 "fabric_name:x%02x:%02x:%02x:%02x:"
7038 "%02x:%02x:%02x:%02x, "
7039 "switch_name:x%02x:%02x:%02x:%02x:"
7040 "%02x:%02x:%02x:%02x\n", i++,
7041 conn_rec->flags, conn_rec->vlan_tag,
7042 conn_rec->fabric_name[0],
7043 conn_rec->fabric_name[1],
7044 conn_rec->fabric_name[2],
7045 conn_rec->fabric_name[3],
7046 conn_rec->fabric_name[4],
7047 conn_rec->fabric_name[5],
7048 conn_rec->fabric_name[6],
7049 conn_rec->fabric_name[7],
7050 conn_rec->switch_name[0],
7051 conn_rec->switch_name[1],
7052 conn_rec->switch_name[2],
7053 conn_rec->switch_name[3],
7054 conn_rec->switch_name[4],
7055 conn_rec->switch_name[5],
7056 conn_rec->switch_name[6],
7057 conn_rec->switch_name[7]);
7058 }
7059 }
7060}
7061
7062/**
7063 * lpfc_read_fcoe_param - Read FCoe parameters from conf region..
7064 * @phba: Pointer to hba context object.
7065 * @buff: Buffer containing the FCoE parameter data structure.
7066 *
7067 * This function update driver data structure with config
7068 * parameters read from config region 23.
7069 */
7070static void
7071lpfc_read_fcoe_param(struct lpfc_hba *phba,
7072 uint8_t *buff)
7073{
7074 struct lpfc_fip_param_hdr *fcoe_param_hdr;
7075 struct lpfc_fcoe_params *fcoe_param;
7076
7077 fcoe_param_hdr = (struct lpfc_fip_param_hdr *)
7078 buff;
7079 fcoe_param = (struct lpfc_fcoe_params *)
7080 (buff + sizeof(struct lpfc_fip_param_hdr));
7081
7082 if ((fcoe_param_hdr->parm_version != FIPP_VERSION) ||
7083 (fcoe_param_hdr->length != FCOE_PARAM_LENGTH))
7084 return;
7085
7086 if (fcoe_param_hdr->parm_flags & FIPP_VLAN_VALID) {
7087 phba->valid_vlan = 1;
7088 phba->vlan_id = le16_to_cpu(fcoe_param->vlan_tag) &
7089 0xFFF;
7090 }
7091
7092 phba->fc_map[0] = fcoe_param->fc_map[0];
7093 phba->fc_map[1] = fcoe_param->fc_map[1];
7094 phba->fc_map[2] = fcoe_param->fc_map[2];
7095 return;
7096}
7097
7098/**
7099 * lpfc_get_rec_conf23 - Get a record type in config region data.
7100 * @buff: Buffer containing config region 23 data.
7101 * @size: Size of the data buffer.
7102 * @rec_type: Record type to be searched.
7103 *
7104 * This function searches config region data to find the beginning
7105 * of the record specified by record_type. If record found, this
7106 * function return pointer to the record else return NULL.
7107 */
7108static uint8_t *
7109lpfc_get_rec_conf23(uint8_t *buff, uint32_t size, uint8_t rec_type)
7110{
7111 uint32_t offset = 0, rec_length;
7112
7113 if ((buff[0] == LPFC_REGION23_LAST_REC) ||
7114 (size < sizeof(uint32_t)))
7115 return NULL;
7116
7117 rec_length = buff[offset + 1];
7118
7119 /*
7120 * One TLV record has one word header and number of data words
7121 * specified in the rec_length field of the record header.
7122 */
7123 while ((offset + rec_length * sizeof(uint32_t) + sizeof(uint32_t))
7124 <= size) {
7125 if (buff[offset] == rec_type)
7126 return &buff[offset];
7127
7128 if (buff[offset] == LPFC_REGION23_LAST_REC)
7129 return NULL;
7130
7131 offset += rec_length * sizeof(uint32_t) + sizeof(uint32_t);
7132 rec_length = buff[offset + 1];
7133 }
7134 return NULL;
7135}
7136
7137/**
7138 * lpfc_parse_fcoe_conf - Parse FCoE config data read from config region 23.
7139 * @phba: Pointer to lpfc_hba data structure.
7140 * @buff: Buffer containing config region 23 data.
7141 * @size: Size of the data buffer.
7142 *
7143 * This function parses the FCoE config parameters in config region 23 and
7144 * populate driver data structure with the parameters.
7145 */
7146void
7147lpfc_parse_fcoe_conf(struct lpfc_hba *phba,
7148 uint8_t *buff,
7149 uint32_t size)
7150{
7151 uint32_t offset = 0;
7152 uint8_t *rec_ptr;
7153
7154 /*
7155 * If data size is less than 2 words signature and version cannot be
7156 * verified.
7157 */
7158 if (size < 2*sizeof(uint32_t))
7159 return;
7160
7161 /* Check the region signature first */
7162 if (memcmp(buff, LPFC_REGION23_SIGNATURE, 4)) {
7163 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
7164 "2567 Config region 23 has bad signature\n");
7165 return;
7166 }
7167
7168 offset += 4;
7169
7170 /* Check the data structure version */
7171 if (buff[offset] != LPFC_REGION23_VERSION) {
7172 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
7173 "2568 Config region 23 has bad version\n");
7174 return;
7175 }
7176 offset += 4;
7177
7178 /* Read FCoE param record */
7179 rec_ptr = lpfc_get_rec_conf23(&buff[offset],
7180 size - offset, FCOE_PARAM_TYPE);
7181 if (rec_ptr)
7182 lpfc_read_fcoe_param(phba, rec_ptr);
7183
7184 /* Read FCF connection table */
7185 rec_ptr = lpfc_get_rec_conf23(&buff[offset],
7186 size - offset, FCOE_CONN_TBL_TYPE);
7187 if (rec_ptr)
7188 lpfc_read_fcf_conn_tbl(phba, rec_ptr);
7189
7190}
7191
7192/*
7193 * lpfc_error_lost_link - IO failure from link event or FW reset check.
7194 *
7195 * @vport: Pointer to lpfc_vport data structure.
7196 * @ulp_status: IO completion status.
7197 * @ulp_word4: Reason code for the ulp_status.
7198 *
7199 * This function evaluates the ulp_status and ulp_word4 values
7200 * for specific error values that indicate an internal link fault
7201 * or fw reset event for the completing IO. Callers require this
7202 * common data to decide next steps on the IO.
7203 *
7204 * Return:
7205 * false - No link or reset error occurred.
7206 * true - A link or reset error occurred.
7207 */
7208bool
7209lpfc_error_lost_link(struct lpfc_vport *vport, u32 ulp_status, u32 ulp_word4)
7210{
7211 /* Mask off the extra port data to get just the reason code. */
7212 u32 rsn_code = IOERR_PARAM_MASK & ulp_word4;
7213
7214 if (ulp_status == IOSTAT_LOCAL_REJECT &&
7215 (rsn_code == IOERR_SLI_ABORTED ||
7216 rsn_code == IOERR_LINK_DOWN ||
7217 rsn_code == IOERR_SLI_DOWN)) {
7218 lpfc_printf_vlog(vport, KERN_WARNING, LOG_SLI | LOG_ELS,
7219 "0408 Report link error true: <x%x:x%x>\n",
7220 ulp_status, ulp_word4);
7221 return true;
7222 }
7223
7224 return false;
7225}