1 /*******************************************************************
2 * This file is part of the Emulex Linux Device Driver for *
3 * Fibre Channel Host Bus Adapters. *
4 * Copyright (C) 2004-2008 Emulex. All rights reserved. *
5 * EMULEX and SLI are trademarks of Emulex. *
7 * Portions Copyright (C) 2004-2005 Christoph Hellwig *
9 * This program is free software; you can redistribute it and/or *
10 * modify it under the terms of version 2 of the GNU General *
11 * Public License as published by the Free Software Foundation. *
12 * This program is distributed in the hope that it will be useful. *
13 * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND *
14 * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, *
15 * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE *
16 * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *
17 * TO BE LEGALLY INVALID. See the GNU General Public License for *
18 * more details, a copy of which can be found in the file COPYING *
19 * included with this package. *
20 *******************************************************************/
22 #include <linux/blkdev.h>
23 #include <linux/delay.h>
24 #include <linux/dma-mapping.h>
25 #include <linux/idr.h>
26 #include <linux/interrupt.h>
27 #include <linux/kthread.h>
28 #include <linux/pci.h>
29 #include <linux/spinlock.h>
31 #include <scsi/scsi.h>
32 #include <scsi/scsi_device.h>
33 #include <scsi/scsi_host.h>
34 #include <scsi/scsi_transport_fc.h>
38 #include "lpfc_sli4.h"
40 #include "lpfc_disc.h"
41 #include "lpfc_scsi.h"
43 #include "lpfc_logmsg.h"
44 #include "lpfc_crtn.h"
45 #include "lpfc_version.h"
46 #include "lpfc_vport.h"
48 inline void lpfc_vport_set_state(struct lpfc_vport *vport,
49 enum fc_vport_state new_state)
51 struct fc_vport *fc_vport = vport->fc_vport;
55 * When the transport defines fc_vport_set state we will replace
56 * this code with the following line
58 /* fc_vport_set_state(fc_vport, new_state); */
59 if (new_state != FC_VPORT_INITIALIZING)
60 fc_vport->vport_last_state = fc_vport->vport_state;
61 fc_vport->vport_state = new_state;
64 /* for all the error states we will set the invternal state to FAILED */
66 case FC_VPORT_NO_FABRIC_SUPP:
67 case FC_VPORT_NO_FABRIC_RSCS:
68 case FC_VPORT_FABRIC_LOGOUT:
69 case FC_VPORT_FABRIC_REJ_WWN:
71 vport->port_state = LPFC_VPORT_FAILED;
73 case FC_VPORT_LINKDOWN:
74 vport->port_state = LPFC_VPORT_UNKNOWN;
83 lpfc_alloc_vpi(struct lpfc_hba *phba)
87 spin_lock_irq(&phba->hbalock);
88 /* Start at bit 1 because vpi zero is reserved for the physical port */
89 vpi = find_next_zero_bit(phba->vpi_bmask, (phba->max_vpi + 1), 1);
90 if (vpi > phba->max_vpi)
93 set_bit(vpi, phba->vpi_bmask);
94 if (phba->sli_rev == LPFC_SLI_REV4)
95 phba->sli4_hba.max_cfg_param.vpi_used++;
96 spin_unlock_irq(&phba->hbalock);
101 lpfc_free_vpi(struct lpfc_hba *phba, int vpi)
105 spin_lock_irq(&phba->hbalock);
106 clear_bit(vpi, phba->vpi_bmask);
107 if (phba->sli_rev == LPFC_SLI_REV4)
108 phba->sli4_hba.max_cfg_param.vpi_used--;
109 spin_unlock_irq(&phba->hbalock);
113 lpfc_vport_sparm(struct lpfc_hba *phba, struct lpfc_vport *vport)
117 struct lpfc_dmabuf *mp;
120 pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
126 rc = lpfc_read_sparam(phba, pmb, vport->vpi);
128 mempool_free(pmb, phba->mbox_mem_pool);
133 * Grab buffer pointer and clear context1 so we can use
134 * lpfc_sli_issue_box_wait
136 mp = (struct lpfc_dmabuf *) pmb->context1;
137 pmb->context1 = NULL;
140 rc = lpfc_sli_issue_mbox_wait(phba, pmb, phba->fc_ratov * 2);
141 if (rc != MBX_SUCCESS) {
142 if (signal_pending(current)) {
143 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT | LOG_VPORT,
144 "1830 Signal aborted mbxCmd x%x\n",
146 lpfc_mbuf_free(phba, mp->virt, mp->phys);
148 if (rc != MBX_TIMEOUT)
149 mempool_free(pmb, phba->mbox_mem_pool);
152 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT | LOG_VPORT,
153 "1818 VPort failed init, mbxCmd x%x "
154 "READ_SPARM mbxStatus x%x, rc = x%x\n",
155 mb->mbxCommand, mb->mbxStatus, rc);
156 lpfc_mbuf_free(phba, mp->virt, mp->phys);
158 if (rc != MBX_TIMEOUT)
159 mempool_free(pmb, phba->mbox_mem_pool);
164 memcpy(&vport->fc_sparam, mp->virt, sizeof (struct serv_parm));
165 memcpy(&vport->fc_nodename, &vport->fc_sparam.nodeName,
166 sizeof (struct lpfc_name));
167 memcpy(&vport->fc_portname, &vport->fc_sparam.portName,
168 sizeof (struct lpfc_name));
170 lpfc_mbuf_free(phba, mp->virt, mp->phys);
172 mempool_free(pmb, phba->mbox_mem_pool);
178 lpfc_valid_wwn_format(struct lpfc_hba *phba, struct lpfc_name *wwn,
179 const char *name_type)
181 /* ensure that IEEE format 1 addresses
182 * contain zeros in bits 59-48
184 if (!((wwn->u.wwn[0] >> 4) == 1 &&
185 ((wwn->u.wwn[0] & 0xf) != 0 || (wwn->u.wwn[1] & 0xf) != 0)))
188 lpfc_printf_log(phba, KERN_ERR, LOG_VPORT,
189 "1822 Invalid %s: %02x:%02x:%02x:%02x:"
190 "%02x:%02x:%02x:%02x\n",
192 wwn->u.wwn[0], wwn->u.wwn[1],
193 wwn->u.wwn[2], wwn->u.wwn[3],
194 wwn->u.wwn[4], wwn->u.wwn[5],
195 wwn->u.wwn[6], wwn->u.wwn[7]);
200 lpfc_unique_wwpn(struct lpfc_hba *phba, struct lpfc_vport *new_vport)
202 struct lpfc_vport *vport;
205 spin_lock_irqsave(&phba->hbalock, flags);
206 list_for_each_entry(vport, &phba->port_list, listentry) {
207 if (vport == new_vport)
209 /* If they match, return not unique */
210 if (memcmp(&vport->fc_sparam.portName,
211 &new_vport->fc_sparam.portName,
212 sizeof(struct lpfc_name)) == 0) {
213 spin_unlock_irqrestore(&phba->hbalock, flags);
217 spin_unlock_irqrestore(&phba->hbalock, flags);
222 * lpfc_discovery_wait - Wait for driver discovery to quiesce
223 * @vport: The virtual port for which this call is being executed.
225 * This driver calls this routine specifically from lpfc_vport_delete
226 * to enforce a synchronous execution of vport
227 * delete relative to discovery activities. The
228 * lpfc_vport_delete routine should not return until it
229 * can reasonably guarantee that discovery has quiesced.
230 * Post FDISC LOGO, the driver must wait until its SAN teardown is
231 * complete and all resources recovered before allowing
234 * This routine does not require any locks held.
236 static void lpfc_discovery_wait(struct lpfc_vport *vport)
238 struct lpfc_hba *phba = vport->phba;
239 uint32_t wait_flags = 0;
240 unsigned long wait_time_max;
241 unsigned long start_time;
243 wait_flags = FC_RSCN_MODE | FC_RSCN_DISCOVERY | FC_NLP_MORE |
244 FC_RSCN_DEFERRED | FC_NDISC_ACTIVE | FC_DISC_TMO;
247 * The time constraint on this loop is a balance between the
248 * fabric RA_TOV value and dev_loss tmo. The driver's
249 * devloss_tmo is 10 giving this loop a 3x multiplier minimally.
251 wait_time_max = msecs_to_jiffies(((phba->fc_ratov * 3) + 3) * 1000);
252 wait_time_max += jiffies;
253 start_time = jiffies;
254 while (time_before(jiffies, wait_time_max)) {
255 if ((vport->num_disc_nodes > 0) ||
256 (vport->fc_flag & wait_flags) ||
257 ((vport->port_state > LPFC_VPORT_FAILED) &&
258 (vport->port_state < LPFC_VPORT_READY))) {
259 lpfc_printf_vlog(vport, KERN_INFO, LOG_VPORT,
260 "1833 Vport discovery quiesce Wait:"
261 " state x%x fc_flags x%x"
262 " num_nodes x%x, waiting 1000 msecs"
263 " total wait msecs x%x\n",
264 vport->port_state, vport->fc_flag,
265 vport->num_disc_nodes,
266 jiffies_to_msecs(jiffies - start_time));
269 /* Base case. Wait variants satisfied. Break out */
270 lpfc_printf_vlog(vport, KERN_INFO, LOG_VPORT,
271 "1834 Vport discovery quiesced:"
272 " state x%x fc_flags x%x"
274 vport->port_state, vport->fc_flag,
275 jiffies_to_msecs(jiffies
281 if (time_after(jiffies, wait_time_max))
282 lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT,
283 "1835 Vport discovery quiesce failed:"
284 " state x%x fc_flags x%x wait msecs x%x\n",
285 vport->port_state, vport->fc_flag,
286 jiffies_to_msecs(jiffies - start_time));
290 lpfc_vport_create(struct fc_vport *fc_vport, bool disable)
292 struct lpfc_nodelist *ndlp;
293 struct Scsi_Host *shost = fc_vport->shost;
294 struct lpfc_vport *pport = (struct lpfc_vport *) shost->hostdata;
295 struct lpfc_hba *phba = pport->phba;
296 struct lpfc_vport *vport = NULL;
299 int rc = VPORT_ERROR;
302 if ((phba->sli_rev < 3) || !(phba->cfg_enable_npiv)) {
303 lpfc_printf_log(phba, KERN_ERR, LOG_VPORT,
304 "1808 Create VPORT failed: "
305 "NPIV is not enabled: SLImode:%d\n",
311 vpi = lpfc_alloc_vpi(phba);
313 lpfc_printf_log(phba, KERN_ERR, LOG_VPORT,
314 "1809 Create VPORT failed: "
315 "Max VPORTs (%d) exceeded\n",
317 rc = VPORT_NORESOURCES;
321 /* Assign an unused board number */
322 if ((instance = lpfc_get_instance()) < 0) {
323 lpfc_printf_log(phba, KERN_ERR, LOG_VPORT,
324 "1810 Create VPORT failed: Cannot get "
325 "instance number\n");
326 lpfc_free_vpi(phba, vpi);
327 rc = VPORT_NORESOURCES;
331 vport = lpfc_create_port(phba, instance, &fc_vport->dev);
333 lpfc_printf_log(phba, KERN_ERR, LOG_VPORT,
334 "1811 Create VPORT failed: vpi x%x\n", vpi);
335 lpfc_free_vpi(phba, vpi);
336 rc = VPORT_NORESOURCES;
341 lpfc_debugfs_initialize(vport);
343 if ((status = lpfc_vport_sparm(phba, vport))) {
344 if (status == -EINTR) {
345 lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT,
346 "1831 Create VPORT Interrupted.\n");
349 lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT,
350 "1813 Create VPORT failed. "
351 "Cannot get sparam\n");
352 rc = VPORT_NORESOURCES;
354 lpfc_free_vpi(phba, vpi);
359 u64_to_wwn(fc_vport->node_name, vport->fc_nodename.u.wwn);
360 u64_to_wwn(fc_vport->port_name, vport->fc_portname.u.wwn);
362 memcpy(&vport->fc_sparam.portName, vport->fc_portname.u.wwn, 8);
363 memcpy(&vport->fc_sparam.nodeName, vport->fc_nodename.u.wwn, 8);
365 if (!lpfc_valid_wwn_format(phba, &vport->fc_sparam.nodeName, "WWNN") ||
366 !lpfc_valid_wwn_format(phba, &vport->fc_sparam.portName, "WWPN")) {
367 lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT,
368 "1821 Create VPORT failed. "
369 "Invalid WWN format\n");
370 lpfc_free_vpi(phba, vpi);
376 if (!lpfc_unique_wwpn(phba, vport)) {
377 lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT,
378 "1823 Create VPORT failed. "
379 "Duplicate WWN on HBA\n");
380 lpfc_free_vpi(phba, vpi);
386 /* Create binary sysfs attribute for vport */
387 lpfc_alloc_sysfs_attr(vport);
389 *(struct lpfc_vport **)fc_vport->dd_data = vport;
390 vport->fc_vport = fc_vport;
393 * In SLI4, the vpi must be activated before it can be used
396 if ((phba->sli_rev == LPFC_SLI_REV4) &&
397 (pport->fc_flag & FC_VFI_REGISTERED)) {
398 rc = lpfc_sli4_init_vpi(phba, vpi);
400 lpfc_printf_log(phba, KERN_ERR, LOG_VPORT,
401 "1838 Failed to INIT_VPI on vpi %d "
402 "status %d\n", vpi, rc);
403 rc = VPORT_NORESOURCES;
404 lpfc_free_vpi(phba, vpi);
407 } else if (phba->sli_rev == LPFC_SLI_REV4) {
409 * Driver cannot INIT_VPI now. Set the flags to
410 * init_vpi when reg_vfi complete.
412 vport->fc_flag |= FC_VPORT_NEEDS_INIT_VPI;
413 lpfc_vport_set_state(vport, FC_VPORT_LINKDOWN);
418 if ((phba->link_state < LPFC_LINK_UP) ||
419 (pport->port_state < LPFC_FABRIC_CFG_LINK) ||
420 (phba->fc_topology == TOPOLOGY_LOOP)) {
421 lpfc_vport_set_state(vport, FC_VPORT_LINKDOWN);
427 lpfc_vport_set_state(vport, FC_VPORT_DISABLED);
432 /* Use the Physical nodes Fabric NDLP to determine if the link is
433 * up and ready to FDISC.
435 ndlp = lpfc_findnode_did(phba->pport, Fabric_DID);
436 if (ndlp && NLP_CHK_NODE_ACT(ndlp) &&
437 ndlp->nlp_state == NLP_STE_UNMAPPED_NODE) {
438 if (phba->link_flag & LS_NPIV_FAB_SUPPORTED) {
439 lpfc_set_disctmo(vport);
440 lpfc_initial_fdisc(vport);
442 lpfc_vport_set_state(vport, FC_VPORT_NO_FABRIC_SUPP);
443 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
444 "0262 No NPIV Fabric support\n");
447 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
452 lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT,
453 "1825 Vport Created.\n");
454 lpfc_host_attrib_init(lpfc_shost_from_vport(vport));
460 disable_vport(struct fc_vport *fc_vport)
462 struct lpfc_vport *vport = *(struct lpfc_vport **)fc_vport->dd_data;
463 struct lpfc_hba *phba = vport->phba;
464 struct lpfc_nodelist *ndlp = NULL, *next_ndlp = NULL;
467 ndlp = lpfc_findnode_did(vport, Fabric_DID);
468 if (ndlp && NLP_CHK_NODE_ACT(ndlp)
469 && phba->link_state >= LPFC_LINK_UP) {
470 vport->unreg_vpi_cmpl = VPORT_INVAL;
471 timeout = msecs_to_jiffies(phba->fc_ratov * 2000);
472 if (!lpfc_issue_els_npiv_logo(vport, ndlp))
473 while (vport->unreg_vpi_cmpl == VPORT_INVAL && timeout)
474 timeout = schedule_timeout(timeout);
477 lpfc_sli_host_down(vport);
479 /* Mark all nodes for discovery so we can remove them by
480 * calling lpfc_cleanup_rpis(vport, 1)
482 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) {
483 if (!NLP_CHK_NODE_ACT(ndlp))
485 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
487 lpfc_disc_state_machine(vport, ndlp, NULL,
488 NLP_EVT_DEVICE_RECOVERY);
490 lpfc_cleanup_rpis(vport, 1);
492 lpfc_stop_vport_timers(vport);
493 lpfc_unreg_all_rpis(vport);
494 lpfc_unreg_default_rpis(vport);
496 * Completion of unreg_vpi (lpfc_mbx_cmpl_unreg_vpi) does the
497 * scsi_host_put() to release the vport.
499 lpfc_mbx_unreg_vpi(vport);
501 lpfc_vport_set_state(vport, FC_VPORT_DISABLED);
502 lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT,
503 "1826 Vport Disabled.\n");
508 enable_vport(struct fc_vport *fc_vport)
510 struct lpfc_vport *vport = *(struct lpfc_vport **)fc_vport->dd_data;
511 struct lpfc_hba *phba = vport->phba;
512 struct lpfc_nodelist *ndlp = NULL;
513 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
515 if ((phba->link_state < LPFC_LINK_UP) ||
516 (phba->fc_topology == TOPOLOGY_LOOP)) {
517 lpfc_vport_set_state(vport, FC_VPORT_LINKDOWN);
521 spin_lock_irq(shost->host_lock);
522 vport->load_flag |= FC_LOADING;
523 vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
524 spin_unlock_irq(shost->host_lock);
526 /* Use the Physical nodes Fabric NDLP to determine if the link is
527 * up and ready to FDISC.
529 ndlp = lpfc_findnode_did(phba->pport, Fabric_DID);
530 if (ndlp && NLP_CHK_NODE_ACT(ndlp)
531 && ndlp->nlp_state == NLP_STE_UNMAPPED_NODE) {
532 if (phba->link_flag & LS_NPIV_FAB_SUPPORTED) {
533 lpfc_set_disctmo(vport);
534 lpfc_initial_fdisc(vport);
536 lpfc_vport_set_state(vport, FC_VPORT_NO_FABRIC_SUPP);
537 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
538 "0264 No NPIV Fabric support\n");
541 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
543 lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT,
544 "1827 Vport Enabled.\n");
549 lpfc_vport_disable(struct fc_vport *fc_vport, bool disable)
552 return disable_vport(fc_vport);
554 return enable_vport(fc_vport);
559 lpfc_vport_delete(struct fc_vport *fc_vport)
561 struct lpfc_nodelist *ndlp = NULL;
562 struct Scsi_Host *shost = (struct Scsi_Host *) fc_vport->shost;
563 struct lpfc_vport *vport = *(struct lpfc_vport **)fc_vport->dd_data;
564 struct lpfc_hba *phba = vport->phba;
567 if (vport->port_type == LPFC_PHYSICAL_PORT) {
568 lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT,
569 "1812 vport_delete failed: Cannot delete "
574 /* If the vport is a static vport fail the deletion. */
575 if ((vport->vport_flag & STATIC_VPORT) &&
576 !(phba->pport->load_flag & FC_UNLOADING)) {
577 lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT,
578 "1837 vport_delete failed: Cannot delete "
584 * If we are not unloading the driver then prevent the vport_delete
585 * from happening until after this vport's discovery is finished.
587 if (!(phba->pport->load_flag & FC_UNLOADING)) {
589 while (check_count < ((phba->fc_ratov * 3) + 3) &&
590 vport->port_state > LPFC_VPORT_FAILED &&
591 vport->port_state < LPFC_VPORT_READY) {
595 if (vport->port_state > LPFC_VPORT_FAILED &&
596 vport->port_state < LPFC_VPORT_READY)
600 * This is a bit of a mess. We want to ensure the shost doesn't get
601 * torn down until we're done with the embedded lpfc_vport structure.
603 * Beyond holding a reference for this function, we also need a
604 * reference for outstanding I/O requests we schedule during delete
605 * processing. But once we scsi_remove_host() we can no longer obtain
606 * a reference through scsi_host_get().
608 * So we take two references here. We release one reference at the
609 * bottom of the function -- after delinking the vport. And we
610 * release the other at the completion of the unreg_vpi that get's
611 * initiated after we've disposed of all other resources associated
614 if (!scsi_host_get(shost))
616 if (!scsi_host_get(shost)) {
617 scsi_host_put(shost);
620 spin_lock_irq(&phba->hbalock);
621 vport->load_flag |= FC_UNLOADING;
622 spin_unlock_irq(&phba->hbalock);
624 lpfc_free_sysfs_attr(vport);
626 lpfc_debugfs_terminate(vport);
628 /* Remove FC host and then SCSI host with the vport */
629 fc_remove_host(lpfc_shost_from_vport(vport));
630 scsi_remove_host(lpfc_shost_from_vport(vport));
632 ndlp = lpfc_findnode_did(phba->pport, Fabric_DID);
634 /* In case of driver unload, we shall not perform fabric logo as the
635 * worker thread already stopped at this stage and, in this case, we
636 * can safely skip the fabric logo.
638 if (phba->pport->load_flag & FC_UNLOADING) {
639 if (ndlp && NLP_CHK_NODE_ACT(ndlp) &&
640 ndlp->nlp_state == NLP_STE_UNMAPPED_NODE &&
641 phba->link_state >= LPFC_LINK_UP) {
642 /* First look for the Fabric ndlp */
643 ndlp = lpfc_findnode_did(vport, Fabric_DID);
646 else if (!NLP_CHK_NODE_ACT(ndlp)) {
647 ndlp = lpfc_enable_node(vport, ndlp,
648 NLP_STE_UNUSED_NODE);
652 /* Remove ndlp from vport npld list */
653 lpfc_dequeue_node(vport, ndlp);
655 /* Indicate free memory when release */
656 spin_lock_irq(&phba->ndlp_lock);
657 NLP_SET_FREE_REQ(ndlp);
658 spin_unlock_irq(&phba->ndlp_lock);
659 /* Kick off release ndlp when it can be safely done */
665 /* Otherwise, we will perform fabric logo as needed */
666 if (ndlp && NLP_CHK_NODE_ACT(ndlp) &&
667 ndlp->nlp_state == NLP_STE_UNMAPPED_NODE &&
668 phba->link_state >= LPFC_LINK_UP &&
669 phba->fc_topology != TOPOLOGY_LOOP) {
670 if (vport->cfg_enable_da_id) {
671 timeout = msecs_to_jiffies(phba->fc_ratov * 2000);
672 if (!lpfc_ns_cmd(vport, SLI_CTNS_DA_ID, 0, 0))
673 while (vport->ct_flags && timeout)
674 timeout = schedule_timeout(timeout);
676 lpfc_printf_log(vport->phba, KERN_WARNING,
678 "1829 CT command failed to "
679 "delete objects on fabric\n");
681 /* First look for the Fabric ndlp */
682 ndlp = lpfc_findnode_did(vport, Fabric_DID);
684 /* Cannot find existing Fabric ndlp, allocate one */
685 ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL);
688 lpfc_nlp_init(vport, ndlp, Fabric_DID);
689 /* Indicate free memory when release */
690 NLP_SET_FREE_REQ(ndlp);
692 if (!NLP_CHK_NODE_ACT(ndlp))
693 ndlp = lpfc_enable_node(vport, ndlp,
694 NLP_STE_UNUSED_NODE);
698 /* Remove ndlp from vport npld list */
699 lpfc_dequeue_node(vport, ndlp);
700 spin_lock_irq(&phba->ndlp_lock);
701 if (!NLP_CHK_FREE_REQ(ndlp))
702 /* Indicate free memory when release */
703 NLP_SET_FREE_REQ(ndlp);
705 /* Skip this if ndlp is already in free mode */
706 spin_unlock_irq(&phba->ndlp_lock);
709 spin_unlock_irq(&phba->ndlp_lock);
711 if (!(vport->vpi_state & LPFC_VPI_REGISTERED))
713 vport->unreg_vpi_cmpl = VPORT_INVAL;
714 timeout = msecs_to_jiffies(phba->fc_ratov * 2000);
715 if (!lpfc_issue_els_npiv_logo(vport, ndlp))
716 while (vport->unreg_vpi_cmpl == VPORT_INVAL && timeout)
717 timeout = schedule_timeout(timeout);
720 if (!(phba->pport->load_flag & FC_UNLOADING))
721 lpfc_discovery_wait(vport);
725 lpfc_sli_host_down(vport);
727 lpfc_stop_vport_timers(vport);
729 if (!(phba->pport->load_flag & FC_UNLOADING)) {
730 lpfc_unreg_all_rpis(vport);
731 lpfc_unreg_default_rpis(vport);
733 * Completion of unreg_vpi (lpfc_mbx_cmpl_unreg_vpi)
734 * does the scsi_host_put() to release the vport.
736 if (lpfc_mbx_unreg_vpi(vport))
737 scsi_host_put(shost);
739 scsi_host_put(shost);
741 lpfc_free_vpi(phba, vport->vpi);
742 vport->work_port_events = 0;
743 spin_lock_irq(&phba->hbalock);
744 list_del_init(&vport->listentry);
745 spin_unlock_irq(&phba->hbalock);
746 lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT,
747 "1828 Vport Deleted.\n");
748 scsi_host_put(shost);
753 lpfc_create_vport_work_array(struct lpfc_hba *phba)
755 struct lpfc_vport *port_iterator;
756 struct lpfc_vport **vports;
758 vports = kzalloc((phba->max_vports + 1) * sizeof(struct lpfc_vport *),
762 spin_lock_irq(&phba->hbalock);
763 list_for_each_entry(port_iterator, &phba->port_list, listentry) {
764 if (!scsi_host_get(lpfc_shost_from_vport(port_iterator))) {
765 lpfc_printf_vlog(port_iterator, KERN_WARNING, LOG_VPORT,
766 "1801 Create vport work array FAILED: "
767 "cannot do scsi_host_get\n");
770 vports[index++] = port_iterator;
772 spin_unlock_irq(&phba->hbalock);
777 lpfc_destroy_vport_work_array(struct lpfc_hba *phba, struct lpfc_vport **vports)
782 for (i = 0; vports[i] != NULL && i <= phba->max_vports; i++)
783 scsi_host_put(lpfc_shost_from_vport(vports[i]));
789 * lpfc_vport_reset_stat_data - Reset the statistical data for the vport
790 * @vport: Pointer to vport object.
792 * This function resets the statistical data for the vport. This function
793 * is called with the host_lock held
796 lpfc_vport_reset_stat_data(struct lpfc_vport *vport)
798 struct lpfc_nodelist *ndlp = NULL, *next_ndlp = NULL;
800 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) {
801 if (!NLP_CHK_NODE_ACT(ndlp))
804 memset(ndlp->lat_data, 0, LPFC_MAX_BUCKET_COUNT *
805 sizeof(struct lpfc_scsicmd_bkt));
811 * lpfc_alloc_bucket - Allocate data buffer required for statistical data
812 * @vport: Pointer to vport object.
814 * This function allocates data buffer required for all the FC
815 * nodes of the vport to collect statistical data.
818 lpfc_alloc_bucket(struct lpfc_vport *vport)
820 struct lpfc_nodelist *ndlp = NULL, *next_ndlp = NULL;
822 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) {
823 if (!NLP_CHK_NODE_ACT(ndlp))
826 kfree(ndlp->lat_data);
827 ndlp->lat_data = NULL;
829 if (ndlp->nlp_state == NLP_STE_MAPPED_NODE) {
830 ndlp->lat_data = kcalloc(LPFC_MAX_BUCKET_COUNT,
831 sizeof(struct lpfc_scsicmd_bkt),
835 lpfc_printf_vlog(vport, KERN_ERR, LOG_NODE,
836 "0287 lpfc_alloc_bucket failed to "
837 "allocate statistical data buffer DID "
838 "0x%x\n", ndlp->nlp_DID);
844 * lpfc_free_bucket - Free data buffer required for statistical data
845 * @vport: Pointer to vport object.
847 * Th function frees statistical data buffer of all the FC
848 * nodes of the vport.
851 lpfc_free_bucket(struct lpfc_vport *vport)
853 struct lpfc_nodelist *ndlp = NULL, *next_ndlp = NULL;
855 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) {
856 if (!NLP_CHK_NODE_ACT(ndlp))
859 kfree(ndlp->lat_data);
860 ndlp->lat_data = NULL;