1 /*******************************************************************
2 * This file is part of the Emulex Linux Device Driver for *
3 * Fibre Channel Host Bus Adapters. *
4 * Copyright (C) 2004-2009 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 *******************************************************************/
21 /* See Fibre Channel protocol T11 FC-LS for details */
22 #include <linux/blkdev.h>
23 #include <linux/pci.h>
24 #include <linux/interrupt.h>
26 #include <scsi/scsi.h>
27 #include <scsi/scsi_device.h>
28 #include <scsi/scsi_host.h>
29 #include <scsi/scsi_transport_fc.h>
34 #include "lpfc_sli4.h"
36 #include "lpfc_disc.h"
37 #include "lpfc_scsi.h"
39 #include "lpfc_logmsg.h"
40 #include "lpfc_crtn.h"
41 #include "lpfc_vport.h"
42 #include "lpfc_debugfs.h"
44 static int lpfc_els_retry(struct lpfc_hba *, struct lpfc_iocbq *,
46 static void lpfc_cmpl_fabric_iocb(struct lpfc_hba *, struct lpfc_iocbq *,
48 static void lpfc_fabric_abort_vport(struct lpfc_vport *vport);
49 static int lpfc_issue_els_fdisc(struct lpfc_vport *vport,
50 struct lpfc_nodelist *ndlp, uint8_t retry);
51 static int lpfc_issue_fabric_iocb(struct lpfc_hba *phba,
52 struct lpfc_iocbq *iocb);
53 static void lpfc_register_new_vport(struct lpfc_hba *phba,
54 struct lpfc_vport *vport,
55 struct lpfc_nodelist *ndlp);
57 static int lpfc_max_els_tries = 3;
60 * lpfc_els_chk_latt - Check host link attention event for a vport
61 * @vport: pointer to a host virtual N_Port data structure.
63 * This routine checks whether there is an outstanding host link
64 * attention event during the discovery process with the @vport. It is done
65 * by reading the HBA's Host Attention (HA) register. If there is any host
66 * link attention events during this @vport's discovery process, the @vport
67 * shall be marked as FC_ABORT_DISCOVERY, a host link attention clear shall
68 * be issued if the link state is not already in host link cleared state,
69 * and a return code shall indicate whether the host link attention event
72 * Note that, if either the host link is in state LPFC_LINK_DOWN or @vport
73 * state in LPFC_VPORT_READY, the request for checking host link attention
74 * event will be ignored and a return code shall indicate no host link
75 * attention event had happened.
78 * 0 - no host link attention event happened
79 * 1 - host link attention event happened
82 lpfc_els_chk_latt(struct lpfc_vport *vport)
84 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
85 struct lpfc_hba *phba = vport->phba;
88 if (vport->port_state >= LPFC_VPORT_READY ||
89 phba->link_state == LPFC_LINK_DOWN ||
90 phba->sli_rev > LPFC_SLI_REV3)
93 /* Read the HBA Host Attention Register */
94 ha_copy = readl(phba->HAregaddr);
96 if (!(ha_copy & HA_LATT))
99 /* Pending Link Event during Discovery */
100 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
101 "0237 Pending Link Event during "
102 "Discovery: State x%x\n",
103 phba->pport->port_state);
105 /* CLEAR_LA should re-enable link attention events and
106 * we should then imediately take a LATT event. The
107 * LATT processing should call lpfc_linkdown() which
108 * will cleanup any left over in-progress discovery
111 spin_lock_irq(shost->host_lock);
112 vport->fc_flag |= FC_ABORT_DISCOVERY;
113 spin_unlock_irq(shost->host_lock);
115 if (phba->link_state != LPFC_CLEAR_LA)
116 lpfc_issue_clear_la(phba, vport);
122 * lpfc_prep_els_iocb - Allocate and prepare a lpfc iocb data structure
123 * @vport: pointer to a host virtual N_Port data structure.
124 * @expectRsp: flag indicating whether response is expected.
125 * @cmdSize: size of the ELS command.
126 * @retry: number of retries to the command IOCB when it fails.
127 * @ndlp: pointer to a node-list data structure.
128 * @did: destination identifier.
129 * @elscmd: the ELS command code.
131 * This routine is used for allocating a lpfc-IOCB data structure from
132 * the driver lpfc-IOCB free-list and prepare the IOCB with the parameters
133 * passed into the routine for discovery state machine to issue an Extended
134 * Link Service (ELS) commands. It is a generic lpfc-IOCB allocation
135 * and preparation routine that is used by all the discovery state machine
136 * routines and the ELS command-specific fields will be later set up by
137 * the individual discovery machine routines after calling this routine
138 * allocating and preparing a generic IOCB data structure. It fills in the
139 * Buffer Descriptor Entries (BDEs), allocates buffers for both command
140 * payload and response payload (if expected). The reference count on the
141 * ndlp is incremented by 1 and the reference to the ndlp is put into
142 * context1 of the IOCB data structure for this IOCB to hold the ndlp
143 * reference for the command's callback function to access later.
146 * Pointer to the newly allocated/prepared els iocb data structure
147 * NULL - when els iocb data structure allocation/preparation failed
150 lpfc_prep_els_iocb(struct lpfc_vport *vport, uint8_t expectRsp,
151 uint16_t cmdSize, uint8_t retry,
152 struct lpfc_nodelist *ndlp, uint32_t did,
155 struct lpfc_hba *phba = vport->phba;
156 struct lpfc_iocbq *elsiocb;
157 struct lpfc_dmabuf *pcmd, *prsp, *pbuflist;
158 struct ulp_bde64 *bpl;
162 if (!lpfc_is_link_up(phba))
165 /* Allocate buffer for command iocb */
166 elsiocb = lpfc_sli_get_iocbq(phba);
172 * If this command is for fabric controller and HBA running
173 * in FIP mode send FLOGI, FDISC and LOGO as FIP frames.
175 if ((did == Fabric_DID) &&
176 bf_get(lpfc_fip_flag, &phba->sli4_hba.sli4_flags) &&
177 ((elscmd == ELS_CMD_FLOGI) ||
178 (elscmd == ELS_CMD_FDISC) ||
179 (elscmd == ELS_CMD_LOGO)))
180 elsiocb->iocb_flag |= LPFC_FIP_ELS;
182 elsiocb->iocb_flag &= ~LPFC_FIP_ELS;
184 icmd = &elsiocb->iocb;
186 /* fill in BDEs for command */
187 /* Allocate buffer for command payload */
188 pcmd = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
190 pcmd->virt = lpfc_mbuf_alloc(phba, MEM_PRI, &pcmd->phys);
191 if (!pcmd || !pcmd->virt)
192 goto els_iocb_free_pcmb_exit;
194 INIT_LIST_HEAD(&pcmd->list);
196 /* Allocate buffer for response payload */
198 prsp = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
200 prsp->virt = lpfc_mbuf_alloc(phba, MEM_PRI,
202 if (!prsp || !prsp->virt)
203 goto els_iocb_free_prsp_exit;
204 INIT_LIST_HEAD(&prsp->list);
208 /* Allocate buffer for Buffer ptr list */
209 pbuflist = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
211 pbuflist->virt = lpfc_mbuf_alloc(phba, MEM_PRI,
213 if (!pbuflist || !pbuflist->virt)
214 goto els_iocb_free_pbuf_exit;
216 INIT_LIST_HEAD(&pbuflist->list);
218 icmd->un.elsreq64.bdl.addrHigh = putPaddrHigh(pbuflist->phys);
219 icmd->un.elsreq64.bdl.addrLow = putPaddrLow(pbuflist->phys);
220 icmd->un.elsreq64.bdl.bdeFlags = BUFF_TYPE_BLP_64;
221 icmd->un.elsreq64.remoteID = did; /* DID */
223 icmd->un.elsreq64.bdl.bdeSize = (2 * sizeof(struct ulp_bde64));
224 icmd->ulpCommand = CMD_ELS_REQUEST64_CR;
225 icmd->ulpTimeout = phba->fc_ratov * 2;
227 icmd->un.elsreq64.bdl.bdeSize = sizeof(struct ulp_bde64);
228 icmd->ulpCommand = CMD_XMIT_ELS_RSP64_CX;
230 icmd->ulpBdeCount = 1;
232 icmd->ulpClass = CLASS3;
234 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) {
235 icmd->un.elsreq64.myID = vport->fc_myDID;
237 /* For ELS_REQUEST64_CR, use the VPI by default */
238 icmd->ulpContext = vport->vpi + phba->vpi_base;
240 /* The CT field must be 0=INVALID_RPI for the ECHO cmd */
241 if (elscmd == ELS_CMD_ECHO)
242 icmd->ulpCt_l = 0; /* context = invalid RPI */
244 icmd->ulpCt_l = 1; /* context = VPI */
247 bpl = (struct ulp_bde64 *) pbuflist->virt;
248 bpl->addrLow = le32_to_cpu(putPaddrLow(pcmd->phys));
249 bpl->addrHigh = le32_to_cpu(putPaddrHigh(pcmd->phys));
250 bpl->tus.f.bdeSize = cmdSize;
251 bpl->tus.f.bdeFlags = 0;
252 bpl->tus.w = le32_to_cpu(bpl->tus.w);
256 bpl->addrLow = le32_to_cpu(putPaddrLow(prsp->phys));
257 bpl->addrHigh = le32_to_cpu(putPaddrHigh(prsp->phys));
258 bpl->tus.f.bdeSize = FCELSSIZE;
259 bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64;
260 bpl->tus.w = le32_to_cpu(bpl->tus.w);
263 /* prevent preparing iocb with NULL ndlp reference */
264 elsiocb->context1 = lpfc_nlp_get(ndlp);
265 if (!elsiocb->context1)
266 goto els_iocb_free_pbuf_exit;
267 elsiocb->context2 = pcmd;
268 elsiocb->context3 = pbuflist;
269 elsiocb->retry = retry;
270 elsiocb->vport = vport;
271 elsiocb->drvrTimeout = (phba->fc_ratov << 1) + LPFC_DRVR_TIMEOUT;
274 list_add(&prsp->list, &pcmd->list);
277 /* Xmit ELS command <elsCmd> to remote NPORT <did> */
278 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
279 "0116 Xmit ELS command x%x to remote "
280 "NPORT x%x I/O tag: x%x, port state: x%x\n",
281 elscmd, did, elsiocb->iotag,
284 /* Xmit ELS response <elsCmd> to remote NPORT <did> */
285 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
286 "0117 Xmit ELS response x%x to remote "
287 "NPORT x%x I/O tag: x%x, size: x%x\n",
288 elscmd, ndlp->nlp_DID, elsiocb->iotag,
293 els_iocb_free_pbuf_exit:
295 lpfc_mbuf_free(phba, prsp->virt, prsp->phys);
298 els_iocb_free_prsp_exit:
299 lpfc_mbuf_free(phba, pcmd->virt, pcmd->phys);
302 els_iocb_free_pcmb_exit:
304 lpfc_sli_release_iocbq(phba, elsiocb);
309 * lpfc_issue_fabric_reglogin - Issue fabric registration login for a vport
310 * @vport: pointer to a host virtual N_Port data structure.
312 * This routine issues a fabric registration login for a @vport. An
313 * active ndlp node with Fabric_DID must already exist for this @vport.
314 * The routine invokes two mailbox commands to carry out fabric registration
315 * login through the HBA firmware: the first mailbox command requests the
316 * HBA to perform link configuration for the @vport; and the second mailbox
317 * command requests the HBA to perform the actual fabric registration login
321 * 0 - successfully issued fabric registration login for @vport
322 * -ENXIO -- failed to issue fabric registration login for @vport
325 lpfc_issue_fabric_reglogin(struct lpfc_vport *vport)
327 struct lpfc_hba *phba = vport->phba;
329 struct lpfc_dmabuf *mp;
330 struct lpfc_nodelist *ndlp;
331 struct serv_parm *sp;
335 sp = &phba->fc_fabparam;
336 ndlp = lpfc_findnode_did(vport, Fabric_DID);
337 if (!ndlp || !NLP_CHK_NODE_ACT(ndlp)) {
342 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
348 vport->port_state = LPFC_FABRIC_CFG_LINK;
349 lpfc_config_link(phba, mbox);
350 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
353 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
354 if (rc == MBX_NOT_FINISHED) {
359 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
364 rc = lpfc_reg_rpi(phba, vport->vpi, Fabric_DID, (uint8_t *)sp, mbox, 0);
370 mbox->mbox_cmpl = lpfc_mbx_cmpl_fabric_reg_login;
372 /* increment the reference count on ndlp to hold reference
373 * for the callback routine.
375 mbox->context2 = lpfc_nlp_get(ndlp);
377 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
378 if (rc == MBX_NOT_FINISHED) {
380 goto fail_issue_reg_login;
385 fail_issue_reg_login:
386 /* decrement the reference count on ndlp just incremented
387 * for the failed mbox command.
390 mp = (struct lpfc_dmabuf *) mbox->context1;
391 lpfc_mbuf_free(phba, mp->virt, mp->phys);
394 mempool_free(mbox, phba->mbox_mem_pool);
397 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
398 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
399 "0249 Cannot issue Register Fabric login: Err %d\n", err);
404 * lpfc_issue_reg_vfi - Register VFI for this vport's fabric login
405 * @vport: pointer to a host virtual N_Port data structure.
407 * This routine issues a REG_VFI mailbox for the vfi, vpi, fcfi triplet for
408 * the @vport. This mailbox command is necessary for FCoE only.
411 * 0 - successfully issued REG_VFI for @vport
412 * A failure code otherwise.
415 lpfc_issue_reg_vfi(struct lpfc_vport *vport)
417 struct lpfc_hba *phba = vport->phba;
419 struct lpfc_nodelist *ndlp;
420 struct serv_parm *sp;
421 struct lpfc_dmabuf *dmabuf;
424 sp = &phba->fc_fabparam;
425 ndlp = lpfc_findnode_did(vport, Fabric_DID);
426 if (!ndlp || !NLP_CHK_NODE_ACT(ndlp)) {
431 dmabuf = kzalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
436 dmabuf->virt = lpfc_mbuf_alloc(phba, MEM_PRI, &dmabuf->phys);
439 goto fail_free_dmabuf;
441 mboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
444 goto fail_free_coherent;
446 vport->port_state = LPFC_FABRIC_CFG_LINK;
447 memcpy(dmabuf->virt, &phba->fc_fabparam, sizeof(vport->fc_sparam));
448 lpfc_reg_vfi(mboxq, vport, dmabuf->phys);
449 mboxq->mbox_cmpl = lpfc_mbx_cmpl_reg_vfi;
450 mboxq->vport = vport;
451 mboxq->context1 = dmabuf;
452 rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_NOWAIT);
453 if (rc == MBX_NOT_FINISHED) {
460 mempool_free(mboxq, phba->mbox_mem_pool);
462 lpfc_mbuf_free(phba, dmabuf->virt, dmabuf->phys);
466 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
467 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
468 "0289 Issue Register VFI failed: Err %d\n", rc);
473 * lpfc_cmpl_els_flogi_fabric - Completion function for flogi to a fabric port
474 * @vport: pointer to a host virtual N_Port data structure.
475 * @ndlp: pointer to a node-list data structure.
476 * @sp: pointer to service parameter data structure.
477 * @irsp: pointer to the IOCB within the lpfc response IOCB.
479 * This routine is invoked by the lpfc_cmpl_els_flogi() completion callback
480 * function to handle the completion of a Fabric Login (FLOGI) into a fabric
481 * port in a fabric topology. It properly sets up the parameters to the @ndlp
482 * from the IOCB response. It also check the newly assigned N_Port ID to the
483 * @vport against the previously assigned N_Port ID. If it is different from
484 * the previously assigned Destination ID (DID), the lpfc_unreg_rpi() routine
485 * is invoked on all the remaining nodes with the @vport to unregister the
486 * Remote Port Indicators (RPIs). Finally, the lpfc_issue_fabric_reglogin()
487 * is invoked to register login to the fabric.
490 * 0 - Success (currently, always return 0)
493 lpfc_cmpl_els_flogi_fabric(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
494 struct serv_parm *sp, IOCB_t *irsp)
496 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
497 struct lpfc_hba *phba = vport->phba;
498 struct lpfc_nodelist *np;
499 struct lpfc_nodelist *next_np;
501 spin_lock_irq(shost->host_lock);
502 vport->fc_flag |= FC_FABRIC;
503 spin_unlock_irq(shost->host_lock);
505 phba->fc_edtov = be32_to_cpu(sp->cmn.e_d_tov);
506 if (sp->cmn.edtovResolution) /* E_D_TOV ticks are in nanoseconds */
507 phba->fc_edtov = (phba->fc_edtov + 999999) / 1000000;
509 phba->fc_ratov = (be32_to_cpu(sp->cmn.w2.r_a_tov) + 999) / 1000;
511 if (phba->fc_topology == TOPOLOGY_LOOP) {
512 spin_lock_irq(shost->host_lock);
513 vport->fc_flag |= FC_PUBLIC_LOOP;
514 spin_unlock_irq(shost->host_lock);
517 * If we are a N-port connected to a Fabric, fixup sparam's so
518 * logins to devices on remote loops work.
520 vport->fc_sparam.cmn.altBbCredit = 1;
523 vport->fc_myDID = irsp->un.ulpWord[4] & Mask_DID;
524 memcpy(&ndlp->nlp_portname, &sp->portName, sizeof(struct lpfc_name));
525 memcpy(&ndlp->nlp_nodename, &sp->nodeName, sizeof(struct lpfc_name));
526 ndlp->nlp_class_sup = 0;
527 if (sp->cls1.classValid)
528 ndlp->nlp_class_sup |= FC_COS_CLASS1;
529 if (sp->cls2.classValid)
530 ndlp->nlp_class_sup |= FC_COS_CLASS2;
531 if (sp->cls3.classValid)
532 ndlp->nlp_class_sup |= FC_COS_CLASS3;
533 if (sp->cls4.classValid)
534 ndlp->nlp_class_sup |= FC_COS_CLASS4;
535 ndlp->nlp_maxframe = ((sp->cmn.bbRcvSizeMsb & 0x0F) << 8) |
536 sp->cmn.bbRcvSizeLsb;
537 memcpy(&phba->fc_fabparam, sp, sizeof(struct serv_parm));
539 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) {
540 if (sp->cmn.response_multiple_NPort) {
541 lpfc_printf_vlog(vport, KERN_WARNING,
543 "1816 FLOGI NPIV supported, "
544 "response data 0x%x\n",
545 sp->cmn.response_multiple_NPort);
546 phba->link_flag |= LS_NPIV_FAB_SUPPORTED;
548 /* Because we asked f/w for NPIV it still expects us
549 to call reg_vnpid atleast for the physcial host */
550 lpfc_printf_vlog(vport, KERN_WARNING,
552 "1817 Fabric does not support NPIV "
553 "- configuring single port mode.\n");
554 phba->link_flag &= ~LS_NPIV_FAB_SUPPORTED;
558 if ((vport->fc_prevDID != vport->fc_myDID) &&
559 !(vport->fc_flag & FC_VPORT_NEEDS_REG_VPI)) {
561 /* If our NportID changed, we need to ensure all
562 * remaining NPORTs get unreg_login'ed.
564 list_for_each_entry_safe(np, next_np,
565 &vport->fc_nodes, nlp_listp) {
566 if (!NLP_CHK_NODE_ACT(np))
568 if ((np->nlp_state != NLP_STE_NPR_NODE) ||
569 !(np->nlp_flag & NLP_NPR_ADISC))
571 spin_lock_irq(shost->host_lock);
572 np->nlp_flag &= ~NLP_NPR_ADISC;
573 spin_unlock_irq(shost->host_lock);
574 lpfc_unreg_rpi(vport, np);
576 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) {
577 lpfc_mbx_unreg_vpi(vport);
578 spin_lock_irq(shost->host_lock);
579 vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
580 spin_unlock_irq(shost->host_lock);
584 if (phba->sli_rev < LPFC_SLI_REV4) {
585 lpfc_nlp_set_state(vport, ndlp, NLP_STE_REG_LOGIN_ISSUE);
586 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED &&
587 vport->fc_flag & FC_VPORT_NEEDS_REG_VPI)
588 lpfc_register_new_vport(phba, vport, ndlp);
590 lpfc_issue_fabric_reglogin(vport);
592 ndlp->nlp_type |= NLP_FABRIC;
593 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
594 if (vport->vfi_state & LPFC_VFI_REGISTERED) {
595 lpfc_start_fdiscs(phba);
596 lpfc_do_scr_ns_plogi(phba, vport);
598 lpfc_issue_reg_vfi(vport);
603 * lpfc_cmpl_els_flogi_nport - Completion function for flogi to an N_Port
604 * @vport: pointer to a host virtual N_Port data structure.
605 * @ndlp: pointer to a node-list data structure.
606 * @sp: pointer to service parameter data structure.
608 * This routine is invoked by the lpfc_cmpl_els_flogi() completion callback
609 * function to handle the completion of a Fabric Login (FLOGI) into an N_Port
610 * in a point-to-point topology. First, the @vport's N_Port Name is compared
611 * with the received N_Port Name: if the @vport's N_Port Name is greater than
612 * the received N_Port Name lexicographically, this node shall assign local
613 * N_Port ID (PT2PT_LocalID: 1) and remote N_Port ID (PT2PT_RemoteID: 2) and
614 * will send out Port Login (PLOGI) with the N_Port IDs assigned. Otherwise,
615 * this node shall just wait for the remote node to issue PLOGI and assign
623 lpfc_cmpl_els_flogi_nport(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
624 struct serv_parm *sp)
626 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
627 struct lpfc_hba *phba = vport->phba;
631 spin_lock_irq(shost->host_lock);
632 vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
633 spin_unlock_irq(shost->host_lock);
635 phba->fc_edtov = FF_DEF_EDTOV;
636 phba->fc_ratov = FF_DEF_RATOV;
637 rc = memcmp(&vport->fc_portname, &sp->portName,
638 sizeof(vport->fc_portname));
640 /* This side will initiate the PLOGI */
641 spin_lock_irq(shost->host_lock);
642 vport->fc_flag |= FC_PT2PT_PLOGI;
643 spin_unlock_irq(shost->host_lock);
646 * N_Port ID cannot be 0, set our to LocalID the other
647 * side will be RemoteID.
652 vport->fc_myDID = PT2PT_LocalID;
654 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
658 lpfc_config_link(phba, mbox);
660 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
662 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
663 if (rc == MBX_NOT_FINISHED) {
664 mempool_free(mbox, phba->mbox_mem_pool);
667 /* Decrement ndlp reference count indicating that ndlp can be
668 * safely released when other references to it are done.
672 ndlp = lpfc_findnode_did(vport, PT2PT_RemoteID);
675 * Cannot find existing Fabric ndlp, so allocate a
678 ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL);
681 lpfc_nlp_init(vport, ndlp, PT2PT_RemoteID);
682 } else if (!NLP_CHK_NODE_ACT(ndlp)) {
683 ndlp = lpfc_enable_node(vport, ndlp,
684 NLP_STE_UNUSED_NODE);
689 memcpy(&ndlp->nlp_portname, &sp->portName,
690 sizeof(struct lpfc_name));
691 memcpy(&ndlp->nlp_nodename, &sp->nodeName,
692 sizeof(struct lpfc_name));
693 /* Set state will put ndlp onto node list if not already done */
694 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
695 spin_lock_irq(shost->host_lock);
696 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
697 spin_unlock_irq(shost->host_lock);
699 /* This side will wait for the PLOGI, decrement ndlp reference
700 * count indicating that ndlp can be released when other
701 * references to it are done.
705 /* If we are pt2pt with another NPort, force NPIV off! */
706 phba->sli3_options &= ~LPFC_SLI3_NPIV_ENABLED;
708 spin_lock_irq(shost->host_lock);
709 vport->fc_flag |= FC_PT2PT;
710 spin_unlock_irq(shost->host_lock);
712 /* Start discovery - this should just do CLEAR_LA */
713 lpfc_disc_start(vport);
720 * lpfc_cmpl_els_flogi - Completion callback function for flogi
721 * @phba: pointer to lpfc hba data structure.
722 * @cmdiocb: pointer to lpfc command iocb data structure.
723 * @rspiocb: pointer to lpfc response iocb data structure.
725 * This routine is the top-level completion callback function for issuing
726 * a Fabric Login (FLOGI) command. If the response IOCB reported error,
727 * the lpfc_els_retry() routine shall be invoked to retry the FLOGI. If
728 * retry has been made (either immediately or delayed with lpfc_els_retry()
729 * returning 1), the command IOCB will be released and function returned.
730 * If the retry attempt has been given up (possibly reach the maximum
731 * number of retries), one additional decrement of ndlp reference shall be
732 * invoked before going out after releasing the command IOCB. This will
733 * actually release the remote node (Note, lpfc_els_free_iocb() will also
734 * invoke one decrement of ndlp reference count). If no error reported in
735 * the IOCB status, the command Port ID field is used to determine whether
736 * this is a point-to-point topology or a fabric topology: if the Port ID
737 * field is assigned, it is a fabric topology; otherwise, it is a
738 * point-to-point topology. The routine lpfc_cmpl_els_flogi_fabric() or
739 * lpfc_cmpl_els_flogi_nport() shall be invoked accordingly to handle the
740 * specific topology completion conditions.
743 lpfc_cmpl_els_flogi(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
744 struct lpfc_iocbq *rspiocb)
746 struct lpfc_vport *vport = cmdiocb->vport;
747 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
748 IOCB_t *irsp = &rspiocb->iocb;
749 struct lpfc_nodelist *ndlp = cmdiocb->context1;
750 struct lpfc_dmabuf *pcmd = cmdiocb->context2, *prsp;
751 struct serv_parm *sp;
754 /* Check to see if link went down during discovery */
755 if (lpfc_els_chk_latt(vport)) {
756 /* One additional decrement on node reference count to
757 * trigger the release of the node
763 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
764 "FLOGI cmpl: status:x%x/x%x state:x%x",
765 irsp->ulpStatus, irsp->un.ulpWord[4],
768 if (irsp->ulpStatus) {
769 /* Check for retry */
770 if (lpfc_els_retry(phba, cmdiocb, rspiocb))
773 /* FLOGI failed, so there is no fabric */
774 spin_lock_irq(shost->host_lock);
775 vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
776 spin_unlock_irq(shost->host_lock);
778 /* If private loop, then allow max outstanding els to be
779 * LPFC_MAX_DISC_THREADS (32). Scanning in the case of no
780 * alpa map would take too long otherwise.
782 if (phba->alpa_map[0] == 0) {
783 vport->cfg_discovery_threads = LPFC_MAX_DISC_THREADS;
787 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
788 "0100 FLOGI failure Data: x%x x%x "
790 irsp->ulpStatus, irsp->un.ulpWord[4],
796 * The FLogI succeeded. Sync the data for the CPU before
799 prsp = list_get_first(&pcmd->list, struct lpfc_dmabuf, list);
801 sp = prsp->virt + sizeof(uint32_t);
803 /* FLOGI completes successfully */
804 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
805 "0101 FLOGI completes sucessfully "
806 "Data: x%x x%x x%x x%x\n",
807 irsp->un.ulpWord[4], sp->cmn.e_d_tov,
808 sp->cmn.w2.r_a_tov, sp->cmn.edtovResolution);
810 if (vport->port_state == LPFC_FLOGI) {
812 * If Common Service Parameters indicate Nport
813 * we are point to point, if Fport we are Fabric.
816 rc = lpfc_cmpl_els_flogi_fabric(vport, ndlp, sp, irsp);
818 rc = lpfc_cmpl_els_flogi_nport(vport, ndlp, sp);
827 if (!lpfc_error_lost_link(irsp)) {
828 /* FLOGI failed, so just use loop map to make discovery list */
829 lpfc_disc_list_loopmap(vport);
831 /* Start discovery */
832 lpfc_disc_start(vport);
833 } else if (((irsp->ulpStatus != IOSTAT_LOCAL_REJECT) ||
834 ((irsp->un.ulpWord[4] != IOERR_SLI_ABORTED) &&
835 (irsp->un.ulpWord[4] != IOERR_SLI_DOWN))) &&
836 (phba->link_state != LPFC_CLEAR_LA)) {
837 /* If FLOGI failed enable link interrupt. */
838 lpfc_issue_clear_la(phba, vport);
841 lpfc_els_free_iocb(phba, cmdiocb);
845 * lpfc_issue_els_flogi - Issue an flogi iocb command for a vport
846 * @vport: pointer to a host virtual N_Port data structure.
847 * @ndlp: pointer to a node-list data structure.
848 * @retry: number of retries to the command IOCB.
850 * This routine issues a Fabric Login (FLOGI) Request ELS command
851 * for a @vport. The initiator service parameters are put into the payload
852 * of the FLOGI Request IOCB and the top-level callback function pointer
853 * to lpfc_cmpl_els_flogi() routine is put to the IOCB completion callback
854 * function field. The lpfc_issue_fabric_iocb routine is invoked to send
855 * out FLOGI ELS command with one outstanding fabric IOCB at a time.
857 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
858 * will be incremented by 1 for holding the ndlp and the reference to ndlp
859 * will be stored into the context1 field of the IOCB for the completion
860 * callback function to the FLOGI ELS command.
863 * 0 - successfully issued flogi iocb for @vport
864 * 1 - failed to issue flogi iocb for @vport
867 lpfc_issue_els_flogi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
870 struct lpfc_hba *phba = vport->phba;
871 struct serv_parm *sp;
873 struct lpfc_iocbq *elsiocb;
874 struct lpfc_sli_ring *pring;
880 pring = &phba->sli.ring[LPFC_ELS_RING];
882 cmdsize = (sizeof(uint32_t) + sizeof(struct serv_parm));
883 elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp,
884 ndlp->nlp_DID, ELS_CMD_FLOGI);
889 icmd = &elsiocb->iocb;
890 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
892 /* For FLOGI request, remainder of payload is service parameters */
893 *((uint32_t *) (pcmd)) = ELS_CMD_FLOGI;
894 pcmd += sizeof(uint32_t);
895 memcpy(pcmd, &vport->fc_sparam, sizeof(struct serv_parm));
896 sp = (struct serv_parm *) pcmd;
898 /* Setup CSPs accordingly for Fabric */
900 sp->cmn.w2.r_a_tov = 0;
901 sp->cls1.classValid = 0;
902 sp->cls2.seqDelivery = 1;
903 sp->cls3.seqDelivery = 1;
904 if (sp->cmn.fcphLow < FC_PH3)
905 sp->cmn.fcphLow = FC_PH3;
906 if (sp->cmn.fcphHigh < FC_PH3)
907 sp->cmn.fcphHigh = FC_PH3;
909 if (phba->sli_rev == LPFC_SLI_REV4) {
910 elsiocb->iocb.ulpCt_h = ((SLI4_CT_FCFI >> 1) & 1);
911 elsiocb->iocb.ulpCt_l = (SLI4_CT_FCFI & 1);
912 /* FLOGI needs to be 3 for WQE FCFI */
913 /* Set the fcfi to the fcfi we registered with */
914 elsiocb->iocb.ulpContext = phba->fcf.fcfi;
915 } else if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) {
916 sp->cmn.request_multiple_Nport = 1;
917 /* For FLOGI, Let FLOGI rsp set the NPortID for VPI 0 */
922 if (phba->fc_topology != TOPOLOGY_LOOP) {
923 icmd->un.elsreq64.myID = 0;
924 icmd->un.elsreq64.fl = 1;
927 tmo = phba->fc_ratov;
928 phba->fc_ratov = LPFC_DISC_FLOGI_TMO;
929 lpfc_set_disctmo(vport);
930 phba->fc_ratov = tmo;
932 phba->fc_stat.elsXmitFLOGI++;
933 elsiocb->iocb_cmpl = lpfc_cmpl_els_flogi;
935 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
936 "Issue FLOGI: opt:x%x",
937 phba->sli3_options, 0, 0);
939 rc = lpfc_issue_fabric_iocb(phba, elsiocb);
940 if (rc == IOCB_ERROR) {
941 lpfc_els_free_iocb(phba, elsiocb);
948 * lpfc_els_abort_flogi - Abort all outstanding flogi iocbs
949 * @phba: pointer to lpfc hba data structure.
951 * This routine aborts all the outstanding Fabric Login (FLOGI) IOCBs
952 * with a @phba. This routine walks all the outstanding IOCBs on the txcmplq
953 * list and issues an abort IOCB commond on each outstanding IOCB that
954 * contains a active Fabric_DID ndlp. Note that this function is to issue
955 * the abort IOCB command on all the outstanding IOCBs, thus when this
956 * function returns, it does not guarantee all the IOCBs are actually aborted.
959 * 0 - Sucessfully issued abort iocb on all outstanding flogis (Always 0)
962 lpfc_els_abort_flogi(struct lpfc_hba *phba)
964 struct lpfc_sli_ring *pring;
965 struct lpfc_iocbq *iocb, *next_iocb;
966 struct lpfc_nodelist *ndlp;
969 /* Abort outstanding I/O on NPort <nlp_DID> */
970 lpfc_printf_log(phba, KERN_INFO, LOG_DISCOVERY,
971 "0201 Abort outstanding I/O on NPort x%x\n",
974 pring = &phba->sli.ring[LPFC_ELS_RING];
977 * Check the txcmplq for an iocb that matches the nport the driver is
980 spin_lock_irq(&phba->hbalock);
981 list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) {
983 if (icmd->ulpCommand == CMD_ELS_REQUEST64_CR &&
984 icmd->un.elsreq64.bdl.ulpIoTag32) {
985 ndlp = (struct lpfc_nodelist *)(iocb->context1);
986 if (ndlp && NLP_CHK_NODE_ACT(ndlp) &&
987 (ndlp->nlp_DID == Fabric_DID))
988 lpfc_sli_issue_abort_iotag(phba, pring, iocb);
991 spin_unlock_irq(&phba->hbalock);
997 * lpfc_initial_flogi - Issue an initial fabric login for a vport
998 * @vport: pointer to a host virtual N_Port data structure.
1000 * This routine issues an initial Fabric Login (FLOGI) for the @vport
1001 * specified. It first searches the ndlp with the Fabric_DID (0xfffffe) from
1002 * the @vport's ndlp list. If no such ndlp found, it will create an ndlp and
1003 * put it into the @vport's ndlp list. If an inactive ndlp found on the list,
1004 * it will just be enabled and made active. The lpfc_issue_els_flogi() routine
1005 * is then invoked with the @vport and the ndlp to perform the FLOGI for the
1009 * 0 - failed to issue initial flogi for @vport
1010 * 1 - successfully issued initial flogi for @vport
1013 lpfc_initial_flogi(struct lpfc_vport *vport)
1015 struct lpfc_hba *phba = vport->phba;
1016 struct lpfc_nodelist *ndlp;
1018 vport->port_state = LPFC_FLOGI;
1019 lpfc_set_disctmo(vport);
1021 /* First look for the Fabric ndlp */
1022 ndlp = lpfc_findnode_did(vport, Fabric_DID);
1024 /* Cannot find existing Fabric ndlp, so allocate a new one */
1025 ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL);
1028 lpfc_nlp_init(vport, ndlp, Fabric_DID);
1029 /* Set the node type */
1030 ndlp->nlp_type |= NLP_FABRIC;
1031 /* Put ndlp onto node list */
1032 lpfc_enqueue_node(vport, ndlp);
1033 } else if (!NLP_CHK_NODE_ACT(ndlp)) {
1034 /* re-setup ndlp without removing from node list */
1035 ndlp = lpfc_enable_node(vport, ndlp, NLP_STE_UNUSED_NODE);
1040 if (lpfc_issue_els_flogi(vport, ndlp, 0))
1041 /* This decrement of reference count to node shall kick off
1042 * the release of the node.
1050 * lpfc_initial_fdisc - Issue an initial fabric discovery for a vport
1051 * @vport: pointer to a host virtual N_Port data structure.
1053 * This routine issues an initial Fabric Discover (FDISC) for the @vport
1054 * specified. It first searches the ndlp with the Fabric_DID (0xfffffe) from
1055 * the @vport's ndlp list. If no such ndlp found, it will create an ndlp and
1056 * put it into the @vport's ndlp list. If an inactive ndlp found on the list,
1057 * it will just be enabled and made active. The lpfc_issue_els_fdisc() routine
1058 * is then invoked with the @vport and the ndlp to perform the FDISC for the
1062 * 0 - failed to issue initial fdisc for @vport
1063 * 1 - successfully issued initial fdisc for @vport
1066 lpfc_initial_fdisc(struct lpfc_vport *vport)
1068 struct lpfc_hba *phba = vport->phba;
1069 struct lpfc_nodelist *ndlp;
1071 /* First look for the Fabric ndlp */
1072 ndlp = lpfc_findnode_did(vport, Fabric_DID);
1074 /* Cannot find existing Fabric ndlp, so allocate a new one */
1075 ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL);
1078 lpfc_nlp_init(vport, ndlp, Fabric_DID);
1079 /* Put ndlp onto node list */
1080 lpfc_enqueue_node(vport, ndlp);
1081 } else if (!NLP_CHK_NODE_ACT(ndlp)) {
1082 /* re-setup ndlp without removing from node list */
1083 ndlp = lpfc_enable_node(vport, ndlp, NLP_STE_UNUSED_NODE);
1088 if (lpfc_issue_els_fdisc(vport, ndlp, 0)) {
1089 /* decrement node reference count to trigger the release of
1099 * lpfc_more_plogi - Check and issue remaining plogis for a vport
1100 * @vport: pointer to a host virtual N_Port data structure.
1102 * This routine checks whether there are more remaining Port Logins
1103 * (PLOGI) to be issued for the @vport. If so, it will invoke the routine
1104 * lpfc_els_disc_plogi() to go through the Node Port Recovery (NPR) nodes
1105 * to issue ELS PLOGIs up to the configured discover threads with the
1106 * @vport (@vport->cfg_discovery_threads). The function also decrement
1107 * the @vport's num_disc_node by 1 if it is not already 0.
1110 lpfc_more_plogi(struct lpfc_vport *vport)
1114 if (vport->num_disc_nodes)
1115 vport->num_disc_nodes--;
1117 /* Continue discovery with <num_disc_nodes> PLOGIs to go */
1118 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
1119 "0232 Continue discovery with %d PLOGIs to go "
1120 "Data: x%x x%x x%x\n",
1121 vport->num_disc_nodes, vport->fc_plogi_cnt,
1122 vport->fc_flag, vport->port_state);
1123 /* Check to see if there are more PLOGIs to be sent */
1124 if (vport->fc_flag & FC_NLP_MORE)
1125 /* go thru NPR nodes and issue any remaining ELS PLOGIs */
1126 sentplogi = lpfc_els_disc_plogi(vport);
1132 * lpfc_plogi_confirm_nport - Confirm pologi wwpn matches stored ndlp
1133 * @phba: pointer to lpfc hba data structure.
1134 * @prsp: pointer to response IOCB payload.
1135 * @ndlp: pointer to a node-list data structure.
1137 * This routine checks and indicates whether the WWPN of an N_Port, retrieved
1138 * from a PLOGI, matches the WWPN that is stored in the @ndlp for that N_POrt.
1139 * The following cases are considered N_Port confirmed:
1140 * 1) The N_Port is a Fabric ndlp; 2) The @ndlp is on vport list and matches
1141 * the WWPN of the N_Port logged into; 3) The @ndlp is not on vport list but
1142 * it does not have WWPN assigned either. If the WWPN is confirmed, the
1143 * pointer to the @ndlp will be returned. If the WWPN is not confirmed:
1144 * 1) if there is a node on vport list other than the @ndlp with the same
1145 * WWPN of the N_Port PLOGI logged into, the lpfc_unreg_rpi() will be invoked
1146 * on that node to release the RPI associated with the node; 2) if there is
1147 * no node found on vport list with the same WWPN of the N_Port PLOGI logged
1148 * into, a new node shall be allocated (or activated). In either case, the
1149 * parameters of the @ndlp shall be copied to the new_ndlp, the @ndlp shall
1150 * be released and the new_ndlp shall be put on to the vport node list and
1151 * its pointer returned as the confirmed node.
1153 * Note that before the @ndlp got "released", the keepDID from not-matching
1154 * or inactive "new_ndlp" on the vport node list is assigned to the nlp_DID
1155 * of the @ndlp. This is because the release of @ndlp is actually to put it
1156 * into an inactive state on the vport node list and the vport node list
1157 * management algorithm does not allow two node with a same DID.
1160 * pointer to the PLOGI N_Port @ndlp
1162 static struct lpfc_nodelist *
1163 lpfc_plogi_confirm_nport(struct lpfc_hba *phba, uint32_t *prsp,
1164 struct lpfc_nodelist *ndlp)
1166 struct lpfc_vport *vport = ndlp->vport;
1167 struct lpfc_nodelist *new_ndlp;
1168 struct lpfc_rport_data *rdata;
1169 struct fc_rport *rport;
1170 struct serv_parm *sp;
1171 uint8_t name[sizeof(struct lpfc_name)];
1172 uint32_t rc, keepDID = 0;
1174 /* Fabric nodes can have the same WWPN so we don't bother searching
1175 * by WWPN. Just return the ndlp that was given to us.
1177 if (ndlp->nlp_type & NLP_FABRIC)
1180 sp = (struct serv_parm *) ((uint8_t *) prsp + sizeof(uint32_t));
1181 memset(name, 0, sizeof(struct lpfc_name));
1183 /* Now we find out if the NPort we are logging into, matches the WWPN
1184 * we have for that ndlp. If not, we have some work to do.
1186 new_ndlp = lpfc_findnode_wwpn(vport, &sp->portName);
1188 if (new_ndlp == ndlp && NLP_CHK_NODE_ACT(new_ndlp))
1192 rc = memcmp(&ndlp->nlp_portname, name,
1193 sizeof(struct lpfc_name));
1196 new_ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_ATOMIC);
1199 lpfc_nlp_init(vport, new_ndlp, ndlp->nlp_DID);
1200 } else if (!NLP_CHK_NODE_ACT(new_ndlp)) {
1201 rc = memcmp(&ndlp->nlp_portname, name,
1202 sizeof(struct lpfc_name));
1205 new_ndlp = lpfc_enable_node(vport, new_ndlp,
1206 NLP_STE_UNUSED_NODE);
1209 keepDID = new_ndlp->nlp_DID;
1211 keepDID = new_ndlp->nlp_DID;
1213 lpfc_unreg_rpi(vport, new_ndlp);
1214 new_ndlp->nlp_DID = ndlp->nlp_DID;
1215 new_ndlp->nlp_prev_state = ndlp->nlp_prev_state;
1217 if (ndlp->nlp_flag & NLP_NPR_2B_DISC)
1218 new_ndlp->nlp_flag |= NLP_NPR_2B_DISC;
1219 ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
1221 /* Set state will put new_ndlp on to node list if not already done */
1222 lpfc_nlp_set_state(vport, new_ndlp, ndlp->nlp_state);
1224 /* Move this back to NPR state */
1225 if (memcmp(&ndlp->nlp_portname, name, sizeof(struct lpfc_name)) == 0) {
1226 /* The new_ndlp is replacing ndlp totally, so we need
1227 * to put ndlp on UNUSED list and try to free it.
1230 /* Fix up the rport accordingly */
1231 rport = ndlp->rport;
1233 rdata = rport->dd_data;
1234 if (rdata->pnode == ndlp) {
1237 rdata->pnode = lpfc_nlp_get(new_ndlp);
1238 new_ndlp->rport = rport;
1240 new_ndlp->nlp_type = ndlp->nlp_type;
1242 /* We shall actually free the ndlp with both nlp_DID and
1243 * nlp_portname fields equals 0 to avoid any ndlp on the
1244 * nodelist never to be used.
1246 if (ndlp->nlp_DID == 0) {
1247 spin_lock_irq(&phba->ndlp_lock);
1248 NLP_SET_FREE_REQ(ndlp);
1249 spin_unlock_irq(&phba->ndlp_lock);
1252 /* Two ndlps cannot have the same did on the nodelist */
1253 ndlp->nlp_DID = keepDID;
1254 lpfc_drop_node(vport, ndlp);
1257 lpfc_unreg_rpi(vport, ndlp);
1258 /* Two ndlps cannot have the same did */
1259 ndlp->nlp_DID = keepDID;
1260 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1266 * lpfc_end_rscn - Check and handle more rscn for a vport
1267 * @vport: pointer to a host virtual N_Port data structure.
1269 * This routine checks whether more Registration State Change
1270 * Notifications (RSCNs) came in while the discovery state machine was in
1271 * the FC_RSCN_MODE. If so, the lpfc_els_handle_rscn() routine will be
1272 * invoked to handle the additional RSCNs for the @vport. Otherwise, the
1273 * FC_RSCN_MODE bit will be cleared with the @vport to mark as the end of
1274 * handling the RSCNs.
1277 lpfc_end_rscn(struct lpfc_vport *vport)
1279 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1281 if (vport->fc_flag & FC_RSCN_MODE) {
1283 * Check to see if more RSCNs came in while we were
1284 * processing this one.
1286 if (vport->fc_rscn_id_cnt ||
1287 (vport->fc_flag & FC_RSCN_DISCOVERY) != 0)
1288 lpfc_els_handle_rscn(vport);
1290 spin_lock_irq(shost->host_lock);
1291 vport->fc_flag &= ~FC_RSCN_MODE;
1292 spin_unlock_irq(shost->host_lock);
1298 * lpfc_cmpl_els_plogi - Completion callback function for plogi
1299 * @phba: pointer to lpfc hba data structure.
1300 * @cmdiocb: pointer to lpfc command iocb data structure.
1301 * @rspiocb: pointer to lpfc response iocb data structure.
1303 * This routine is the completion callback function for issuing the Port
1304 * Login (PLOGI) command. For PLOGI completion, there must be an active
1305 * ndlp on the vport node list that matches the remote node ID from the
1306 * PLOGI reponse IOCB. If such ndlp does not exist, the PLOGI is simply
1307 * ignored and command IOCB released. The PLOGI response IOCB status is
1308 * checked for error conditons. If there is error status reported, PLOGI
1309 * retry shall be attempted by invoking the lpfc_els_retry() routine.
1310 * Otherwise, the lpfc_plogi_confirm_nport() routine shall be invoked on
1311 * the ndlp and the NLP_EVT_CMPL_PLOGI state to the Discover State Machine
1312 * (DSM) is set for this PLOGI completion. Finally, it checks whether
1313 * there are additional N_Port nodes with the vport that need to perform
1314 * PLOGI. If so, the lpfc_more_plogi() routine is invoked to issue addition
1318 lpfc_cmpl_els_plogi(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
1319 struct lpfc_iocbq *rspiocb)
1321 struct lpfc_vport *vport = cmdiocb->vport;
1322 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1324 struct lpfc_nodelist *ndlp;
1325 struct lpfc_dmabuf *prsp;
1326 int disc, rc, did, type;
1328 /* we pass cmdiocb to state machine which needs rspiocb as well */
1329 cmdiocb->context_un.rsp_iocb = rspiocb;
1331 irsp = &rspiocb->iocb;
1332 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
1333 "PLOGI cmpl: status:x%x/x%x did:x%x",
1334 irsp->ulpStatus, irsp->un.ulpWord[4],
1335 irsp->un.elsreq64.remoteID);
1337 ndlp = lpfc_findnode_did(vport, irsp->un.elsreq64.remoteID);
1338 if (!ndlp || !NLP_CHK_NODE_ACT(ndlp)) {
1339 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1340 "0136 PLOGI completes to NPort x%x "
1341 "with no ndlp. Data: x%x x%x x%x\n",
1342 irsp->un.elsreq64.remoteID,
1343 irsp->ulpStatus, irsp->un.ulpWord[4],
1348 /* Since ndlp can be freed in the disc state machine, note if this node
1349 * is being used during discovery.
1351 spin_lock_irq(shost->host_lock);
1352 disc = (ndlp->nlp_flag & NLP_NPR_2B_DISC);
1353 ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
1354 spin_unlock_irq(shost->host_lock);
1357 /* PLOGI completes to NPort <nlp_DID> */
1358 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
1359 "0102 PLOGI completes to NPort x%x "
1360 "Data: x%x x%x x%x x%x x%x\n",
1361 ndlp->nlp_DID, irsp->ulpStatus, irsp->un.ulpWord[4],
1362 irsp->ulpTimeout, disc, vport->num_disc_nodes);
1363 /* Check to see if link went down during discovery */
1364 if (lpfc_els_chk_latt(vport)) {
1365 spin_lock_irq(shost->host_lock);
1366 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
1367 spin_unlock_irq(shost->host_lock);
1371 /* ndlp could be freed in DSM, save these values now */
1372 type = ndlp->nlp_type;
1373 did = ndlp->nlp_DID;
1375 if (irsp->ulpStatus) {
1376 /* Check for retry */
1377 if (lpfc_els_retry(phba, cmdiocb, rspiocb)) {
1378 /* ELS command is being retried */
1380 spin_lock_irq(shost->host_lock);
1381 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
1382 spin_unlock_irq(shost->host_lock);
1387 /* Do not call DSM for lpfc_els_abort'ed ELS cmds */
1388 if (lpfc_error_lost_link(irsp))
1389 rc = NLP_STE_FREED_NODE;
1391 rc = lpfc_disc_state_machine(vport, ndlp, cmdiocb,
1392 NLP_EVT_CMPL_PLOGI);
1394 /* Good status, call state machine */
1395 prsp = list_entry(((struct lpfc_dmabuf *)
1396 cmdiocb->context2)->list.next,
1397 struct lpfc_dmabuf, list);
1398 ndlp = lpfc_plogi_confirm_nport(phba, prsp->virt, ndlp);
1399 rc = lpfc_disc_state_machine(vport, ndlp, cmdiocb,
1400 NLP_EVT_CMPL_PLOGI);
1403 if (disc && vport->num_disc_nodes) {
1404 /* Check to see if there are more PLOGIs to be sent */
1405 lpfc_more_plogi(vport);
1407 if (vport->num_disc_nodes == 0) {
1408 spin_lock_irq(shost->host_lock);
1409 vport->fc_flag &= ~FC_NDISC_ACTIVE;
1410 spin_unlock_irq(shost->host_lock);
1412 lpfc_can_disctmo(vport);
1413 lpfc_end_rscn(vport);
1418 lpfc_els_free_iocb(phba, cmdiocb);
1423 * lpfc_issue_els_plogi - Issue an plogi iocb command for a vport
1424 * @vport: pointer to a host virtual N_Port data structure.
1425 * @did: destination port identifier.
1426 * @retry: number of retries to the command IOCB.
1428 * This routine issues a Port Login (PLOGI) command to a remote N_Port
1429 * (with the @did) for a @vport. Before issuing a PLOGI to a remote N_Port,
1430 * the ndlp with the remote N_Port DID must exist on the @vport's ndlp list.
1431 * This routine constructs the proper feilds of the PLOGI IOCB and invokes
1432 * the lpfc_sli_issue_iocb() routine to send out PLOGI ELS command.
1434 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
1435 * will be incremented by 1 for holding the ndlp and the reference to ndlp
1436 * will be stored into the context1 field of the IOCB for the completion
1437 * callback function to the PLOGI ELS command.
1440 * 0 - Successfully issued a plogi for @vport
1441 * 1 - failed to issue a plogi for @vport
1444 lpfc_issue_els_plogi(struct lpfc_vport *vport, uint32_t did, uint8_t retry)
1446 struct lpfc_hba *phba = vport->phba;
1447 struct serv_parm *sp;
1449 struct lpfc_nodelist *ndlp;
1450 struct lpfc_iocbq *elsiocb;
1451 struct lpfc_sli *psli;
1458 ndlp = lpfc_findnode_did(vport, did);
1459 if (ndlp && !NLP_CHK_NODE_ACT(ndlp))
1462 /* If ndlp is not NULL, we will bump the reference count on it */
1463 cmdsize = (sizeof(uint32_t) + sizeof(struct serv_parm));
1464 elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp, did,
1469 icmd = &elsiocb->iocb;
1470 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
1472 /* For PLOGI request, remainder of payload is service parameters */
1473 *((uint32_t *) (pcmd)) = ELS_CMD_PLOGI;
1474 pcmd += sizeof(uint32_t);
1475 memcpy(pcmd, &vport->fc_sparam, sizeof(struct serv_parm));
1476 sp = (struct serv_parm *) pcmd;
1478 if (sp->cmn.fcphLow < FC_PH_4_3)
1479 sp->cmn.fcphLow = FC_PH_4_3;
1481 if (sp->cmn.fcphHigh < FC_PH3)
1482 sp->cmn.fcphHigh = FC_PH3;
1484 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
1485 "Issue PLOGI: did:x%x",
1488 phba->fc_stat.elsXmitPLOGI++;
1489 elsiocb->iocb_cmpl = lpfc_cmpl_els_plogi;
1490 ret = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
1492 if (ret == IOCB_ERROR) {
1493 lpfc_els_free_iocb(phba, elsiocb);
1500 * lpfc_cmpl_els_prli - Completion callback function for prli
1501 * @phba: pointer to lpfc hba data structure.
1502 * @cmdiocb: pointer to lpfc command iocb data structure.
1503 * @rspiocb: pointer to lpfc response iocb data structure.
1505 * This routine is the completion callback function for a Process Login
1506 * (PRLI) ELS command. The PRLI response IOCB status is checked for error
1507 * status. If there is error status reported, PRLI retry shall be attempted
1508 * by invoking the lpfc_els_retry() routine. Otherwise, the state
1509 * NLP_EVT_CMPL_PRLI is sent to the Discover State Machine (DSM) for this
1510 * ndlp to mark the PRLI completion.
1513 lpfc_cmpl_els_prli(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
1514 struct lpfc_iocbq *rspiocb)
1516 struct lpfc_vport *vport = cmdiocb->vport;
1517 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1519 struct lpfc_sli *psli;
1520 struct lpfc_nodelist *ndlp;
1523 /* we pass cmdiocb to state machine which needs rspiocb as well */
1524 cmdiocb->context_un.rsp_iocb = rspiocb;
1526 irsp = &(rspiocb->iocb);
1527 ndlp = (struct lpfc_nodelist *) cmdiocb->context1;
1528 spin_lock_irq(shost->host_lock);
1529 ndlp->nlp_flag &= ~NLP_PRLI_SND;
1530 spin_unlock_irq(shost->host_lock);
1532 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
1533 "PRLI cmpl: status:x%x/x%x did:x%x",
1534 irsp->ulpStatus, irsp->un.ulpWord[4],
1536 /* PRLI completes to NPort <nlp_DID> */
1537 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
1538 "0103 PRLI completes to NPort x%x "
1539 "Data: x%x x%x x%x x%x\n",
1540 ndlp->nlp_DID, irsp->ulpStatus, irsp->un.ulpWord[4],
1541 irsp->ulpTimeout, vport->num_disc_nodes);
1543 vport->fc_prli_sent--;
1544 /* Check to see if link went down during discovery */
1545 if (lpfc_els_chk_latt(vport))
1548 if (irsp->ulpStatus) {
1549 /* Check for retry */
1550 if (lpfc_els_retry(phba, cmdiocb, rspiocb)) {
1551 /* ELS command is being retried */
1555 /* Do not call DSM for lpfc_els_abort'ed ELS cmds */
1556 if (lpfc_error_lost_link(irsp))
1559 lpfc_disc_state_machine(vport, ndlp, cmdiocb,
1562 /* Good status, call state machine */
1563 lpfc_disc_state_machine(vport, ndlp, cmdiocb,
1566 lpfc_els_free_iocb(phba, cmdiocb);
1571 * lpfc_issue_els_prli - Issue a prli iocb command for a vport
1572 * @vport: pointer to a host virtual N_Port data structure.
1573 * @ndlp: pointer to a node-list data structure.
1574 * @retry: number of retries to the command IOCB.
1576 * This routine issues a Process Login (PRLI) ELS command for the
1577 * @vport. The PRLI service parameters are set up in the payload of the
1578 * PRLI Request command and the pointer to lpfc_cmpl_els_prli() routine
1579 * is put to the IOCB completion callback func field before invoking the
1580 * routine lpfc_sli_issue_iocb() to send out PRLI command.
1582 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
1583 * will be incremented by 1 for holding the ndlp and the reference to ndlp
1584 * will be stored into the context1 field of the IOCB for the completion
1585 * callback function to the PRLI ELS command.
1588 * 0 - successfully issued prli iocb command for @vport
1589 * 1 - failed to issue prli iocb command for @vport
1592 lpfc_issue_els_prli(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1595 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1596 struct lpfc_hba *phba = vport->phba;
1599 struct lpfc_iocbq *elsiocb;
1603 cmdsize = (sizeof(uint32_t) + sizeof(PRLI));
1604 elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp,
1605 ndlp->nlp_DID, ELS_CMD_PRLI);
1609 icmd = &elsiocb->iocb;
1610 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
1612 /* For PRLI request, remainder of payload is service parameters */
1613 memset(pcmd, 0, (sizeof(PRLI) + sizeof(uint32_t)));
1614 *((uint32_t *) (pcmd)) = ELS_CMD_PRLI;
1615 pcmd += sizeof(uint32_t);
1617 /* For PRLI, remainder of payload is PRLI parameter page */
1618 npr = (PRLI *) pcmd;
1620 * If our firmware version is 3.20 or later,
1621 * set the following bits for FC-TAPE support.
1623 if (phba->vpd.rev.feaLevelHigh >= 0x02) {
1624 npr->ConfmComplAllowed = 1;
1626 npr->TaskRetryIdReq = 1;
1628 npr->estabImagePair = 1;
1629 npr->readXferRdyDis = 1;
1631 /* For FCP support */
1632 npr->prliType = PRLI_FCP_TYPE;
1633 npr->initiatorFunc = 1;
1635 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
1636 "Issue PRLI: did:x%x",
1637 ndlp->nlp_DID, 0, 0);
1639 phba->fc_stat.elsXmitPRLI++;
1640 elsiocb->iocb_cmpl = lpfc_cmpl_els_prli;
1641 spin_lock_irq(shost->host_lock);
1642 ndlp->nlp_flag |= NLP_PRLI_SND;
1643 spin_unlock_irq(shost->host_lock);
1644 if (lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0) ==
1646 spin_lock_irq(shost->host_lock);
1647 ndlp->nlp_flag &= ~NLP_PRLI_SND;
1648 spin_unlock_irq(shost->host_lock);
1649 lpfc_els_free_iocb(phba, elsiocb);
1652 vport->fc_prli_sent++;
1657 * lpfc_rscn_disc - Perform rscn discovery for a vport
1658 * @vport: pointer to a host virtual N_Port data structure.
1660 * This routine performs Registration State Change Notification (RSCN)
1661 * discovery for a @vport. If the @vport's node port recovery count is not
1662 * zero, it will invoke the lpfc_els_disc_plogi() to perform PLOGI for all
1663 * the nodes that need recovery. If none of the PLOGI were needed through
1664 * the lpfc_els_disc_plogi() routine, the lpfc_end_rscn() routine shall be
1665 * invoked to check and handle possible more RSCN came in during the period
1666 * of processing the current ones.
1669 lpfc_rscn_disc(struct lpfc_vport *vport)
1671 lpfc_can_disctmo(vport);
1673 /* RSCN discovery */
1674 /* go thru NPR nodes and issue ELS PLOGIs */
1675 if (vport->fc_npr_cnt)
1676 if (lpfc_els_disc_plogi(vport))
1679 lpfc_end_rscn(vport);
1683 * lpfc_adisc_done - Complete the adisc phase of discovery
1684 * @vport: pointer to lpfc_vport hba data structure that finished all ADISCs.
1686 * This function is called when the final ADISC is completed during discovery.
1687 * This function handles clearing link attention or issuing reg_vpi depending
1688 * on whether npiv is enabled. This function also kicks off the PLOGI phase of
1690 * This function is called with no locks held.
1693 lpfc_adisc_done(struct lpfc_vport *vport)
1695 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1696 struct lpfc_hba *phba = vport->phba;
1699 * For NPIV, cmpl_reg_vpi will set port_state to READY,
1700 * and continue discovery.
1702 if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
1703 !(vport->fc_flag & FC_RSCN_MODE) &&
1704 (phba->sli_rev < LPFC_SLI_REV4)) {
1705 lpfc_issue_reg_vpi(phba, vport);
1709 * For SLI2, we need to set port_state to READY
1710 * and continue discovery.
1712 if (vport->port_state < LPFC_VPORT_READY) {
1713 /* If we get here, there is nothing to ADISC */
1714 if (vport->port_type == LPFC_PHYSICAL_PORT)
1715 lpfc_issue_clear_la(phba, vport);
1716 if (!(vport->fc_flag & FC_ABORT_DISCOVERY)) {
1717 vport->num_disc_nodes = 0;
1718 /* go thru NPR list, issue ELS PLOGIs */
1719 if (vport->fc_npr_cnt)
1720 lpfc_els_disc_plogi(vport);
1721 if (!vport->num_disc_nodes) {
1722 spin_lock_irq(shost->host_lock);
1723 vport->fc_flag &= ~FC_NDISC_ACTIVE;
1724 spin_unlock_irq(shost->host_lock);
1725 lpfc_can_disctmo(vport);
1726 lpfc_end_rscn(vport);
1729 vport->port_state = LPFC_VPORT_READY;
1731 lpfc_rscn_disc(vport);
1735 * lpfc_more_adisc - Issue more adisc as needed
1736 * @vport: pointer to a host virtual N_Port data structure.
1738 * This routine determines whether there are more ndlps on a @vport
1739 * node list need to have Address Discover (ADISC) issued. If so, it will
1740 * invoke the lpfc_els_disc_adisc() routine to issue ADISC on the @vport's
1741 * remaining nodes which need to have ADISC sent.
1744 lpfc_more_adisc(struct lpfc_vport *vport)
1748 if (vport->num_disc_nodes)
1749 vport->num_disc_nodes--;
1750 /* Continue discovery with <num_disc_nodes> ADISCs to go */
1751 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
1752 "0210 Continue discovery with %d ADISCs to go "
1753 "Data: x%x x%x x%x\n",
1754 vport->num_disc_nodes, vport->fc_adisc_cnt,
1755 vport->fc_flag, vport->port_state);
1756 /* Check to see if there are more ADISCs to be sent */
1757 if (vport->fc_flag & FC_NLP_MORE) {
1758 lpfc_set_disctmo(vport);
1759 /* go thru NPR nodes and issue any remaining ELS ADISCs */
1760 sentadisc = lpfc_els_disc_adisc(vport);
1762 if (!vport->num_disc_nodes)
1763 lpfc_adisc_done(vport);
1768 * lpfc_cmpl_els_adisc - Completion callback function for adisc
1769 * @phba: pointer to lpfc hba data structure.
1770 * @cmdiocb: pointer to lpfc command iocb data structure.
1771 * @rspiocb: pointer to lpfc response iocb data structure.
1773 * This routine is the completion function for issuing the Address Discover
1774 * (ADISC) command. It first checks to see whether link went down during
1775 * the discovery process. If so, the node will be marked as node port
1776 * recovery for issuing discover IOCB by the link attention handler and
1777 * exit. Otherwise, the response status is checked. If error was reported
1778 * in the response status, the ADISC command shall be retried by invoking
1779 * the lpfc_els_retry() routine. Otherwise, if no error was reported in
1780 * the response status, the state machine is invoked to set transition
1781 * with respect to NLP_EVT_CMPL_ADISC event.
1784 lpfc_cmpl_els_adisc(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
1785 struct lpfc_iocbq *rspiocb)
1787 struct lpfc_vport *vport = cmdiocb->vport;
1788 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1790 struct lpfc_nodelist *ndlp;
1793 /* we pass cmdiocb to state machine which needs rspiocb as well */
1794 cmdiocb->context_un.rsp_iocb = rspiocb;
1796 irsp = &(rspiocb->iocb);
1797 ndlp = (struct lpfc_nodelist *) cmdiocb->context1;
1799 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
1800 "ADISC cmpl: status:x%x/x%x did:x%x",
1801 irsp->ulpStatus, irsp->un.ulpWord[4],
1804 /* Since ndlp can be freed in the disc state machine, note if this node
1805 * is being used during discovery.
1807 spin_lock_irq(shost->host_lock);
1808 disc = (ndlp->nlp_flag & NLP_NPR_2B_DISC);
1809 ndlp->nlp_flag &= ~(NLP_ADISC_SND | NLP_NPR_2B_DISC);
1810 spin_unlock_irq(shost->host_lock);
1811 /* ADISC completes to NPort <nlp_DID> */
1812 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
1813 "0104 ADISC completes to NPort x%x "
1814 "Data: x%x x%x x%x x%x x%x\n",
1815 ndlp->nlp_DID, irsp->ulpStatus, irsp->un.ulpWord[4],
1816 irsp->ulpTimeout, disc, vport->num_disc_nodes);
1817 /* Check to see if link went down during discovery */
1818 if (lpfc_els_chk_latt(vport)) {
1819 spin_lock_irq(shost->host_lock);
1820 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
1821 spin_unlock_irq(shost->host_lock);
1825 if (irsp->ulpStatus) {
1826 /* Check for retry */
1827 if (lpfc_els_retry(phba, cmdiocb, rspiocb)) {
1828 /* ELS command is being retried */
1830 spin_lock_irq(shost->host_lock);
1831 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
1832 spin_unlock_irq(shost->host_lock);
1833 lpfc_set_disctmo(vport);
1838 /* Do not call DSM for lpfc_els_abort'ed ELS cmds */
1839 if (!lpfc_error_lost_link(irsp))
1840 lpfc_disc_state_machine(vport, ndlp, cmdiocb,
1841 NLP_EVT_CMPL_ADISC);
1843 /* Good status, call state machine */
1844 lpfc_disc_state_machine(vport, ndlp, cmdiocb,
1845 NLP_EVT_CMPL_ADISC);
1847 /* Check to see if there are more ADISCs to be sent */
1848 if (disc && vport->num_disc_nodes)
1849 lpfc_more_adisc(vport);
1851 lpfc_els_free_iocb(phba, cmdiocb);
1856 * lpfc_issue_els_adisc - Issue an address discover iocb to an node on a vport
1857 * @vport: pointer to a virtual N_Port data structure.
1858 * @ndlp: pointer to a node-list data structure.
1859 * @retry: number of retries to the command IOCB.
1861 * This routine issues an Address Discover (ADISC) for an @ndlp on a
1862 * @vport. It prepares the payload of the ADISC ELS command, updates the
1863 * and states of the ndlp, and invokes the lpfc_sli_issue_iocb() routine
1864 * to issue the ADISC ELS command.
1866 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
1867 * will be incremented by 1 for holding the ndlp and the reference to ndlp
1868 * will be stored into the context1 field of the IOCB for the completion
1869 * callback function to the ADISC ELS command.
1872 * 0 - successfully issued adisc
1873 * 1 - failed to issue adisc
1876 lpfc_issue_els_adisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1879 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1880 struct lpfc_hba *phba = vport->phba;
1883 struct lpfc_iocbq *elsiocb;
1887 cmdsize = (sizeof(uint32_t) + sizeof(ADISC));
1888 elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp,
1889 ndlp->nlp_DID, ELS_CMD_ADISC);
1893 icmd = &elsiocb->iocb;
1894 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
1896 /* For ADISC request, remainder of payload is service parameters */
1897 *((uint32_t *) (pcmd)) = ELS_CMD_ADISC;
1898 pcmd += sizeof(uint32_t);
1900 /* Fill in ADISC payload */
1901 ap = (ADISC *) pcmd;
1902 ap->hardAL_PA = phba->fc_pref_ALPA;
1903 memcpy(&ap->portName, &vport->fc_portname, sizeof(struct lpfc_name));
1904 memcpy(&ap->nodeName, &vport->fc_nodename, sizeof(struct lpfc_name));
1905 ap->DID = be32_to_cpu(vport->fc_myDID);
1907 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
1908 "Issue ADISC: did:x%x",
1909 ndlp->nlp_DID, 0, 0);
1911 phba->fc_stat.elsXmitADISC++;
1912 elsiocb->iocb_cmpl = lpfc_cmpl_els_adisc;
1913 spin_lock_irq(shost->host_lock);
1914 ndlp->nlp_flag |= NLP_ADISC_SND;
1915 spin_unlock_irq(shost->host_lock);
1916 if (lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0) ==
1918 spin_lock_irq(shost->host_lock);
1919 ndlp->nlp_flag &= ~NLP_ADISC_SND;
1920 spin_unlock_irq(shost->host_lock);
1921 lpfc_els_free_iocb(phba, elsiocb);
1928 * lpfc_cmpl_els_logo - Completion callback function for logo
1929 * @phba: pointer to lpfc hba data structure.
1930 * @cmdiocb: pointer to lpfc command iocb data structure.
1931 * @rspiocb: pointer to lpfc response iocb data structure.
1933 * This routine is the completion function for issuing the ELS Logout (LOGO)
1934 * command. If no error status was reported from the LOGO response, the
1935 * state machine of the associated ndlp shall be invoked for transition with
1936 * respect to NLP_EVT_CMPL_LOGO event. Otherwise, if error status was reported,
1937 * the lpfc_els_retry() routine will be invoked to retry the LOGO command.
1940 lpfc_cmpl_els_logo(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
1941 struct lpfc_iocbq *rspiocb)
1943 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) cmdiocb->context1;
1944 struct lpfc_vport *vport = ndlp->vport;
1945 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1947 struct lpfc_sli *psli;
1950 /* we pass cmdiocb to state machine which needs rspiocb as well */
1951 cmdiocb->context_un.rsp_iocb = rspiocb;
1953 irsp = &(rspiocb->iocb);
1954 spin_lock_irq(shost->host_lock);
1955 ndlp->nlp_flag &= ~NLP_LOGO_SND;
1956 spin_unlock_irq(shost->host_lock);
1958 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
1959 "LOGO cmpl: status:x%x/x%x did:x%x",
1960 irsp->ulpStatus, irsp->un.ulpWord[4],
1962 /* LOGO completes to NPort <nlp_DID> */
1963 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
1964 "0105 LOGO completes to NPort x%x "
1965 "Data: x%x x%x x%x x%x\n",
1966 ndlp->nlp_DID, irsp->ulpStatus, irsp->un.ulpWord[4],
1967 irsp->ulpTimeout, vport->num_disc_nodes);
1968 /* Check to see if link went down during discovery */
1969 if (lpfc_els_chk_latt(vport))
1972 if (ndlp->nlp_flag & NLP_TARGET_REMOVE) {
1973 /* NLP_EVT_DEVICE_RM should unregister the RPI
1974 * which should abort all outstanding IOs.
1976 lpfc_disc_state_machine(vport, ndlp, cmdiocb,
1981 if (irsp->ulpStatus) {
1982 /* Check for retry */
1983 if (lpfc_els_retry(phba, cmdiocb, rspiocb))
1984 /* ELS command is being retried */
1987 /* Do not call DSM for lpfc_els_abort'ed ELS cmds */
1988 if (lpfc_error_lost_link(irsp))
1991 lpfc_disc_state_machine(vport, ndlp, cmdiocb,
1994 /* Good status, call state machine.
1995 * This will unregister the rpi if needed.
1997 lpfc_disc_state_machine(vport, ndlp, cmdiocb,
2000 lpfc_els_free_iocb(phba, cmdiocb);
2005 * lpfc_issue_els_logo - Issue a logo to an node on a vport
2006 * @vport: pointer to a virtual N_Port data structure.
2007 * @ndlp: pointer to a node-list data structure.
2008 * @retry: number of retries to the command IOCB.
2010 * This routine constructs and issues an ELS Logout (LOGO) iocb command
2011 * to a remote node, referred by an @ndlp on a @vport. It constructs the
2012 * payload of the IOCB, properly sets up the @ndlp state, and invokes the
2013 * lpfc_sli_issue_iocb() routine to send out the LOGO ELS command.
2015 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
2016 * will be incremented by 1 for holding the ndlp and the reference to ndlp
2017 * will be stored into the context1 field of the IOCB for the completion
2018 * callback function to the LOGO ELS command.
2021 * 0 - successfully issued logo
2022 * 1 - failed to issue logo
2025 lpfc_issue_els_logo(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2028 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2029 struct lpfc_hba *phba = vport->phba;
2031 struct lpfc_iocbq *elsiocb;
2036 spin_lock_irq(shost->host_lock);
2037 if (ndlp->nlp_flag & NLP_LOGO_SND) {
2038 spin_unlock_irq(shost->host_lock);
2041 spin_unlock_irq(shost->host_lock);
2043 cmdsize = (2 * sizeof(uint32_t)) + sizeof(struct lpfc_name);
2044 elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp,
2045 ndlp->nlp_DID, ELS_CMD_LOGO);
2049 icmd = &elsiocb->iocb;
2050 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
2051 *((uint32_t *) (pcmd)) = ELS_CMD_LOGO;
2052 pcmd += sizeof(uint32_t);
2054 /* Fill in LOGO payload */
2055 *((uint32_t *) (pcmd)) = be32_to_cpu(vport->fc_myDID);
2056 pcmd += sizeof(uint32_t);
2057 memcpy(pcmd, &vport->fc_portname, sizeof(struct lpfc_name));
2059 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
2060 "Issue LOGO: did:x%x",
2061 ndlp->nlp_DID, 0, 0);
2063 phba->fc_stat.elsXmitLOGO++;
2064 elsiocb->iocb_cmpl = lpfc_cmpl_els_logo;
2065 spin_lock_irq(shost->host_lock);
2066 ndlp->nlp_flag |= NLP_LOGO_SND;
2067 spin_unlock_irq(shost->host_lock);
2068 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
2070 if (rc == IOCB_ERROR) {
2071 spin_lock_irq(shost->host_lock);
2072 ndlp->nlp_flag &= ~NLP_LOGO_SND;
2073 spin_unlock_irq(shost->host_lock);
2074 lpfc_els_free_iocb(phba, elsiocb);
2081 * lpfc_cmpl_els_cmd - Completion callback function for generic els command
2082 * @phba: pointer to lpfc hba data structure.
2083 * @cmdiocb: pointer to lpfc command iocb data structure.
2084 * @rspiocb: pointer to lpfc response iocb data structure.
2086 * This routine is a generic completion callback function for ELS commands.
2087 * Specifically, it is the callback function which does not need to perform
2088 * any command specific operations. It is currently used by the ELS command
2089 * issuing routines for the ELS State Change Request (SCR),
2090 * lpfc_issue_els_scr(), and the ELS Fibre Channel Address Resolution
2091 * Protocol Response (FARPR) routine, lpfc_issue_els_farpr(). Other than
2092 * certain debug loggings, this callback function simply invokes the
2093 * lpfc_els_chk_latt() routine to check whether link went down during the
2094 * discovery process.
2097 lpfc_cmpl_els_cmd(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
2098 struct lpfc_iocbq *rspiocb)
2100 struct lpfc_vport *vport = cmdiocb->vport;
2103 irsp = &rspiocb->iocb;
2105 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
2106 "ELS cmd cmpl: status:x%x/x%x did:x%x",
2107 irsp->ulpStatus, irsp->un.ulpWord[4],
2108 irsp->un.elsreq64.remoteID);
2109 /* ELS cmd tag <ulpIoTag> completes */
2110 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
2111 "0106 ELS cmd tag x%x completes Data: x%x x%x x%x\n",
2112 irsp->ulpIoTag, irsp->ulpStatus,
2113 irsp->un.ulpWord[4], irsp->ulpTimeout);
2114 /* Check to see if link went down during discovery */
2115 lpfc_els_chk_latt(vport);
2116 lpfc_els_free_iocb(phba, cmdiocb);
2121 * lpfc_issue_els_scr - Issue a scr to an node on a vport
2122 * @vport: pointer to a host virtual N_Port data structure.
2123 * @nportid: N_Port identifier to the remote node.
2124 * @retry: number of retries to the command IOCB.
2126 * This routine issues a State Change Request (SCR) to a fabric node
2127 * on a @vport. The remote node @nportid is passed into the function. It
2128 * first search the @vport node list to find the matching ndlp. If no such
2129 * ndlp is found, a new ndlp shall be created for this (SCR) purpose. An
2130 * IOCB is allocated, payload prepared, and the lpfc_sli_issue_iocb()
2131 * routine is invoked to send the SCR IOCB.
2133 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
2134 * will be incremented by 1 for holding the ndlp and the reference to ndlp
2135 * will be stored into the context1 field of the IOCB for the completion
2136 * callback function to the SCR ELS command.
2139 * 0 - Successfully issued scr command
2140 * 1 - Failed to issue scr command
2143 lpfc_issue_els_scr(struct lpfc_vport *vport, uint32_t nportid, uint8_t retry)
2145 struct lpfc_hba *phba = vport->phba;
2147 struct lpfc_iocbq *elsiocb;
2148 struct lpfc_sli *psli;
2151 struct lpfc_nodelist *ndlp;
2154 cmdsize = (sizeof(uint32_t) + sizeof(SCR));
2156 ndlp = lpfc_findnode_did(vport, nportid);
2158 ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL);
2161 lpfc_nlp_init(vport, ndlp, nportid);
2162 lpfc_enqueue_node(vport, ndlp);
2163 } else if (!NLP_CHK_NODE_ACT(ndlp)) {
2164 ndlp = lpfc_enable_node(vport, ndlp, NLP_STE_UNUSED_NODE);
2169 elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp,
2170 ndlp->nlp_DID, ELS_CMD_SCR);
2173 /* This will trigger the release of the node just
2180 icmd = &elsiocb->iocb;
2181 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
2183 *((uint32_t *) (pcmd)) = ELS_CMD_SCR;
2184 pcmd += sizeof(uint32_t);
2186 /* For SCR, remainder of payload is SCR parameter page */
2187 memset(pcmd, 0, sizeof(SCR));
2188 ((SCR *) pcmd)->Function = SCR_FUNC_FULL;
2190 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
2191 "Issue SCR: did:x%x",
2192 ndlp->nlp_DID, 0, 0);
2194 phba->fc_stat.elsXmitSCR++;
2195 elsiocb->iocb_cmpl = lpfc_cmpl_els_cmd;
2196 if (lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0) ==
2198 /* The additional lpfc_nlp_put will cause the following
2199 * lpfc_els_free_iocb routine to trigger the rlease of
2203 lpfc_els_free_iocb(phba, elsiocb);
2206 /* This will cause the callback-function lpfc_cmpl_els_cmd to
2207 * trigger the release of node.
2214 * lpfc_issue_els_farpr - Issue a farp to an node on a vport
2215 * @vport: pointer to a host virtual N_Port data structure.
2216 * @nportid: N_Port identifier to the remote node.
2217 * @retry: number of retries to the command IOCB.
2219 * This routine issues a Fibre Channel Address Resolution Response
2220 * (FARPR) to a node on a vport. The remote node N_Port identifier (@nportid)
2221 * is passed into the function. It first search the @vport node list to find
2222 * the matching ndlp. If no such ndlp is found, a new ndlp shall be created
2223 * for this (FARPR) purpose. An IOCB is allocated, payload prepared, and the
2224 * lpfc_sli_issue_iocb() routine is invoked to send the FARPR ELS command.
2226 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
2227 * will be incremented by 1 for holding the ndlp and the reference to ndlp
2228 * will be stored into the context1 field of the IOCB for the completion
2229 * callback function to the PARPR ELS command.
2232 * 0 - Successfully issued farpr command
2233 * 1 - Failed to issue farpr command
2236 lpfc_issue_els_farpr(struct lpfc_vport *vport, uint32_t nportid, uint8_t retry)
2238 struct lpfc_hba *phba = vport->phba;
2240 struct lpfc_iocbq *elsiocb;
2241 struct lpfc_sli *psli;
2246 struct lpfc_nodelist *ondlp;
2247 struct lpfc_nodelist *ndlp;
2250 cmdsize = (sizeof(uint32_t) + sizeof(FARP));
2252 ndlp = lpfc_findnode_did(vport, nportid);
2254 ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL);
2257 lpfc_nlp_init(vport, ndlp, nportid);
2258 lpfc_enqueue_node(vport, ndlp);
2259 } else if (!NLP_CHK_NODE_ACT(ndlp)) {
2260 ndlp = lpfc_enable_node(vport, ndlp, NLP_STE_UNUSED_NODE);
2265 elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp,
2266 ndlp->nlp_DID, ELS_CMD_RNID);
2268 /* This will trigger the release of the node just
2275 icmd = &elsiocb->iocb;
2276 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
2278 *((uint32_t *) (pcmd)) = ELS_CMD_FARPR;
2279 pcmd += sizeof(uint32_t);
2281 /* Fill in FARPR payload */
2282 fp = (FARP *) (pcmd);
2283 memset(fp, 0, sizeof(FARP));
2284 lp = (uint32_t *) pcmd;
2285 *lp++ = be32_to_cpu(nportid);
2286 *lp++ = be32_to_cpu(vport->fc_myDID);
2288 fp->Mflags = (FARP_MATCH_PORT | FARP_MATCH_NODE);
2290 memcpy(&fp->RportName, &vport->fc_portname, sizeof(struct lpfc_name));
2291 memcpy(&fp->RnodeName, &vport->fc_nodename, sizeof(struct lpfc_name));
2292 ondlp = lpfc_findnode_did(vport, nportid);
2293 if (ondlp && NLP_CHK_NODE_ACT(ondlp)) {
2294 memcpy(&fp->OportName, &ondlp->nlp_portname,
2295 sizeof(struct lpfc_name));
2296 memcpy(&fp->OnodeName, &ondlp->nlp_nodename,
2297 sizeof(struct lpfc_name));
2300 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
2301 "Issue FARPR: did:x%x",
2302 ndlp->nlp_DID, 0, 0);
2304 phba->fc_stat.elsXmitFARPR++;
2305 elsiocb->iocb_cmpl = lpfc_cmpl_els_cmd;
2306 if (lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0) ==
2308 /* The additional lpfc_nlp_put will cause the following
2309 * lpfc_els_free_iocb routine to trigger the release of
2313 lpfc_els_free_iocb(phba, elsiocb);
2316 /* This will cause the callback-function lpfc_cmpl_els_cmd to
2317 * trigger the release of the node.
2324 * lpfc_cancel_retry_delay_tmo - Cancel the timer with delayed iocb-cmd retry
2325 * @vport: pointer to a host virtual N_Port data structure.
2326 * @nlp: pointer to a node-list data structure.
2328 * This routine cancels the timer with a delayed IOCB-command retry for
2329 * a @vport's @ndlp. It stops the timer for the delayed function retrial and
2330 * removes the ELS retry event if it presents. In addition, if the
2331 * NLP_NPR_2B_DISC bit is set in the @nlp's nlp_flag bitmap, ADISC IOCB
2332 * commands are sent for the @vport's nodes that require issuing discovery
2336 lpfc_cancel_retry_delay_tmo(struct lpfc_vport *vport, struct lpfc_nodelist *nlp)
2338 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2339 struct lpfc_work_evt *evtp;
2341 if (!(nlp->nlp_flag & NLP_DELAY_TMO))
2343 spin_lock_irq(shost->host_lock);
2344 nlp->nlp_flag &= ~NLP_DELAY_TMO;
2345 spin_unlock_irq(shost->host_lock);
2346 del_timer_sync(&nlp->nlp_delayfunc);
2347 nlp->nlp_last_elscmd = 0;
2348 if (!list_empty(&nlp->els_retry_evt.evt_listp)) {
2349 list_del_init(&nlp->els_retry_evt.evt_listp);
2350 /* Decrement nlp reference count held for the delayed retry */
2351 evtp = &nlp->els_retry_evt;
2352 lpfc_nlp_put((struct lpfc_nodelist *)evtp->evt_arg1);
2354 if (nlp->nlp_flag & NLP_NPR_2B_DISC) {
2355 spin_lock_irq(shost->host_lock);
2356 nlp->nlp_flag &= ~NLP_NPR_2B_DISC;
2357 spin_unlock_irq(shost->host_lock);
2358 if (vport->num_disc_nodes) {
2359 if (vport->port_state < LPFC_VPORT_READY) {
2360 /* Check if there are more ADISCs to be sent */
2361 lpfc_more_adisc(vport);
2363 /* Check if there are more PLOGIs to be sent */
2364 lpfc_more_plogi(vport);
2365 if (vport->num_disc_nodes == 0) {
2366 spin_lock_irq(shost->host_lock);
2367 vport->fc_flag &= ~FC_NDISC_ACTIVE;
2368 spin_unlock_irq(shost->host_lock);
2369 lpfc_can_disctmo(vport);
2370 lpfc_end_rscn(vport);
2379 * lpfc_els_retry_delay - Timer function with a ndlp delayed function timer
2380 * @ptr: holder for the pointer to the timer function associated data (ndlp).
2382 * This routine is invoked by the ndlp delayed-function timer to check
2383 * whether there is any pending ELS retry event(s) with the node. If not, it
2384 * simply returns. Otherwise, if there is at least one ELS delayed event, it
2385 * adds the delayed events to the HBA work list and invokes the
2386 * lpfc_worker_wake_up() routine to wake up worker thread to process the
2387 * event. Note that lpfc_nlp_get() is called before posting the event to
2388 * the work list to hold reference count of ndlp so that it guarantees the
2389 * reference to ndlp will still be available when the worker thread gets
2390 * to the event associated with the ndlp.
2393 lpfc_els_retry_delay(unsigned long ptr)
2395 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) ptr;
2396 struct lpfc_vport *vport = ndlp->vport;
2397 struct lpfc_hba *phba = vport->phba;
2398 unsigned long flags;
2399 struct lpfc_work_evt *evtp = &ndlp->els_retry_evt;
2401 spin_lock_irqsave(&phba->hbalock, flags);
2402 if (!list_empty(&evtp->evt_listp)) {
2403 spin_unlock_irqrestore(&phba->hbalock, flags);
2407 /* We need to hold the node by incrementing the reference
2408 * count until the queued work is done
2410 evtp->evt_arg1 = lpfc_nlp_get(ndlp);
2411 if (evtp->evt_arg1) {
2412 evtp->evt = LPFC_EVT_ELS_RETRY;
2413 list_add_tail(&evtp->evt_listp, &phba->work_list);
2414 lpfc_worker_wake_up(phba);
2416 spin_unlock_irqrestore(&phba->hbalock, flags);
2421 * lpfc_els_retry_delay_handler - Work thread handler for ndlp delayed function
2422 * @ndlp: pointer to a node-list data structure.
2424 * This routine is the worker-thread handler for processing the @ndlp delayed
2425 * event(s), posted by the lpfc_els_retry_delay() routine. It simply retrieves
2426 * the last ELS command from the associated ndlp and invokes the proper ELS
2427 * function according to the delayed ELS command to retry the command.
2430 lpfc_els_retry_delay_handler(struct lpfc_nodelist *ndlp)
2432 struct lpfc_vport *vport = ndlp->vport;
2433 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2434 uint32_t cmd, did, retry;
2436 spin_lock_irq(shost->host_lock);
2437 did = ndlp->nlp_DID;
2438 cmd = ndlp->nlp_last_elscmd;
2439 ndlp->nlp_last_elscmd = 0;
2441 if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
2442 spin_unlock_irq(shost->host_lock);
2446 ndlp->nlp_flag &= ~NLP_DELAY_TMO;
2447 spin_unlock_irq(shost->host_lock);
2449 * If a discovery event readded nlp_delayfunc after timer
2450 * firing and before processing the timer, cancel the
2453 del_timer_sync(&ndlp->nlp_delayfunc);
2454 retry = ndlp->nlp_retry;
2455 ndlp->nlp_retry = 0;
2459 lpfc_issue_els_flogi(vport, ndlp, retry);
2462 if (!lpfc_issue_els_plogi(vport, ndlp->nlp_DID, retry)) {
2463 ndlp->nlp_prev_state = ndlp->nlp_state;
2464 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
2468 if (!lpfc_issue_els_adisc(vport, ndlp, retry)) {
2469 ndlp->nlp_prev_state = ndlp->nlp_state;
2470 lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
2474 if (!lpfc_issue_els_prli(vport, ndlp, retry)) {
2475 ndlp->nlp_prev_state = ndlp->nlp_state;
2476 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PRLI_ISSUE);
2480 if (!lpfc_issue_els_logo(vport, ndlp, retry)) {
2481 ndlp->nlp_prev_state = ndlp->nlp_state;
2482 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2486 lpfc_issue_els_fdisc(vport, ndlp, retry);
2493 * lpfc_els_retry - Make retry decision on an els command iocb
2494 * @phba: pointer to lpfc hba data structure.
2495 * @cmdiocb: pointer to lpfc command iocb data structure.
2496 * @rspiocb: pointer to lpfc response iocb data structure.
2498 * This routine makes a retry decision on an ELS command IOCB, which has
2499 * failed. The following ELS IOCBs use this function for retrying the command
2500 * when previously issued command responsed with error status: FLOGI, PLOGI,
2501 * PRLI, ADISC, LOGO, and FDISC. Based on the ELS command type and the
2502 * returned error status, it makes the decision whether a retry shall be
2503 * issued for the command, and whether a retry shall be made immediately or
2504 * delayed. In the former case, the corresponding ELS command issuing-function
2505 * is called to retry the command. In the later case, the ELS command shall
2506 * be posted to the ndlp delayed event and delayed function timer set to the
2507 * ndlp for the delayed command issusing.
2510 * 0 - No retry of els command is made
2511 * 1 - Immediate or delayed retry of els command is made
2514 lpfc_els_retry(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
2515 struct lpfc_iocbq *rspiocb)
2517 struct lpfc_vport *vport = cmdiocb->vport;
2518 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2519 IOCB_t *irsp = &rspiocb->iocb;
2520 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) cmdiocb->context1;
2521 struct lpfc_dmabuf *pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
2524 int retry = 0, maxretry = lpfc_max_els_tries, delay = 0;
2530 /* Note: context2 may be 0 for internal driver abort
2531 * of delays ELS command.
2534 if (pcmd && pcmd->virt) {
2535 elscmd = (uint32_t *) (pcmd->virt);
2539 if (ndlp && NLP_CHK_NODE_ACT(ndlp))
2540 did = ndlp->nlp_DID;
2542 /* We should only hit this case for retrying PLOGI */
2543 did = irsp->un.elsreq64.remoteID;
2544 ndlp = lpfc_findnode_did(vport, did);
2545 if ((!ndlp || !NLP_CHK_NODE_ACT(ndlp))
2546 && (cmd != ELS_CMD_PLOGI))
2550 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
2551 "Retry ELS: wd7:x%x wd4:x%x did:x%x",
2552 *(((uint32_t *) irsp) + 7), irsp->un.ulpWord[4], ndlp->nlp_DID);
2554 switch (irsp->ulpStatus) {
2555 case IOSTAT_FCP_RSP_ERROR:
2556 case IOSTAT_REMOTE_STOP:
2559 case IOSTAT_LOCAL_REJECT:
2560 switch ((irsp->un.ulpWord[4] & 0xff)) {
2561 case IOERR_LOOP_OPEN_FAILURE:
2562 if (cmd == ELS_CMD_FLOGI) {
2563 if (PCI_DEVICE_ID_HORNET ==
2564 phba->pcidev->device) {
2565 phba->fc_topology = TOPOLOGY_LOOP;
2566 phba->pport->fc_myDID = 0;
2567 phba->alpa_map[0] = 0;
2568 phba->alpa_map[1] = 0;
2571 if (cmd == ELS_CMD_PLOGI && cmdiocb->retry == 0)
2576 case IOERR_ILLEGAL_COMMAND:
2577 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
2578 "0124 Retry illegal cmd x%x "
2579 "retry:x%x delay:x%x\n",
2580 cmd, cmdiocb->retry, delay);
2582 /* All command's retry policy */
2584 if (cmdiocb->retry > 2)
2588 case IOERR_NO_RESOURCES:
2589 logerr = 1; /* HBA out of resources */
2591 if (cmdiocb->retry > 100)
2596 case IOERR_ILLEGAL_FRAME:
2601 case IOERR_SEQUENCE_TIMEOUT:
2602 case IOERR_INVALID_RPI:
2608 case IOSTAT_NPORT_RJT:
2609 case IOSTAT_FABRIC_RJT:
2610 if (irsp->un.ulpWord[4] & RJT_UNAVAIL_TEMP) {
2616 case IOSTAT_NPORT_BSY:
2617 case IOSTAT_FABRIC_BSY:
2618 logerr = 1; /* Fabric / Remote NPort out of resources */
2623 stat.un.lsRjtError = be32_to_cpu(irsp->un.ulpWord[4]);
2624 /* Added for Vendor specifc support
2625 * Just keep retrying for these Rsn / Exp codes
2627 switch (stat.un.b.lsRjtRsnCode) {
2628 case LSRJT_UNABLE_TPC:
2629 if (stat.un.b.lsRjtRsnCodeExp ==
2630 LSEXP_CMD_IN_PROGRESS) {
2631 if (cmd == ELS_CMD_PLOGI) {
2638 if (cmd == ELS_CMD_PLOGI) {
2640 maxretry = lpfc_max_els_tries + 1;
2644 if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
2645 (cmd == ELS_CMD_FDISC) &&
2646 (stat.un.b.lsRjtRsnCodeExp == LSEXP_OUT_OF_RESOURCE)){
2647 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
2648 "0125 FDISC Failed (x%x). "
2649 "Fabric out of resources\n",
2650 stat.un.lsRjtError);
2651 lpfc_vport_set_state(vport,
2652 FC_VPORT_NO_FABRIC_RSCS);
2656 case LSRJT_LOGICAL_BSY:
2657 if ((cmd == ELS_CMD_PLOGI) ||
2658 (cmd == ELS_CMD_PRLI)) {
2661 } else if (cmd == ELS_CMD_FDISC) {
2662 /* FDISC retry policy */
2664 if (cmdiocb->retry >= 32)
2670 case LSRJT_LOGICAL_ERR:
2671 /* There are some cases where switches return this
2672 * error when they are not ready and should be returning
2673 * Logical Busy. We should delay every time.
2675 if (cmd == ELS_CMD_FDISC &&
2676 stat.un.b.lsRjtRsnCodeExp == LSEXP_PORT_LOGIN_REQ) {
2682 case LSRJT_PROTOCOL_ERR:
2683 if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
2684 (cmd == ELS_CMD_FDISC) &&
2685 ((stat.un.b.lsRjtRsnCodeExp == LSEXP_INVALID_PNAME) ||
2686 (stat.un.b.lsRjtRsnCodeExp == LSEXP_INVALID_NPORT_ID))
2688 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
2689 "0122 FDISC Failed (x%x). "
2690 "Fabric Detected Bad WWN\n",
2691 stat.un.lsRjtError);
2692 lpfc_vport_set_state(vport,
2693 FC_VPORT_FABRIC_REJ_WWN);
2699 case IOSTAT_INTERMED_RSP:
2707 if (did == FDMI_DID)
2710 if ((cmd == ELS_CMD_FLOGI) &&
2711 (phba->fc_topology != TOPOLOGY_LOOP) &&
2712 !lpfc_error_lost_link(irsp)) {
2713 /* FLOGI retry policy */
2717 if (cmdiocb->retry >= 100)
2719 else if (cmdiocb->retry >= 32)
2724 if (maxretry && (cmdiocb->retry >= maxretry)) {
2725 phba->fc_stat.elsRetryExceeded++;
2729 if ((vport->load_flag & FC_UNLOADING) != 0)
2734 /* Retry ELS command <elsCmd> to remote NPORT <did> */
2735 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
2736 "0107 Retry ELS command x%x to remote "
2737 "NPORT x%x Data: x%x x%x\n",
2738 cmd, did, cmdiocb->retry, delay);
2740 if (((cmd == ELS_CMD_PLOGI) || (cmd == ELS_CMD_ADISC)) &&
2741 ((irsp->ulpStatus != IOSTAT_LOCAL_REJECT) ||
2742 ((irsp->un.ulpWord[4] & 0xff) != IOERR_NO_RESOURCES))) {
2743 /* Don't reset timer for no resources */
2745 /* If discovery / RSCN timer is running, reset it */
2746 if (timer_pending(&vport->fc_disctmo) ||
2747 (vport->fc_flag & FC_RSCN_MODE))
2748 lpfc_set_disctmo(vport);
2751 phba->fc_stat.elsXmitRetry++;
2752 if (ndlp && NLP_CHK_NODE_ACT(ndlp) && delay) {
2753 phba->fc_stat.elsDelayRetry++;
2754 ndlp->nlp_retry = cmdiocb->retry;
2756 /* delay is specified in milliseconds */
2757 mod_timer(&ndlp->nlp_delayfunc,
2758 jiffies + msecs_to_jiffies(delay));
2759 spin_lock_irq(shost->host_lock);
2760 ndlp->nlp_flag |= NLP_DELAY_TMO;
2761 spin_unlock_irq(shost->host_lock);
2763 ndlp->nlp_prev_state = ndlp->nlp_state;
2764 if (cmd == ELS_CMD_PRLI)
2765 lpfc_nlp_set_state(vport, ndlp,
2766 NLP_STE_REG_LOGIN_ISSUE);
2768 lpfc_nlp_set_state(vport, ndlp,
2770 ndlp->nlp_last_elscmd = cmd;
2776 lpfc_issue_els_flogi(vport, ndlp, cmdiocb->retry);
2779 lpfc_issue_els_fdisc(vport, ndlp, cmdiocb->retry);
2782 if (ndlp && NLP_CHK_NODE_ACT(ndlp)) {
2783 ndlp->nlp_prev_state = ndlp->nlp_state;
2784 lpfc_nlp_set_state(vport, ndlp,
2785 NLP_STE_PLOGI_ISSUE);
2787 lpfc_issue_els_plogi(vport, did, cmdiocb->retry);
2790 ndlp->nlp_prev_state = ndlp->nlp_state;
2791 lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
2792 lpfc_issue_els_adisc(vport, ndlp, cmdiocb->retry);
2795 ndlp->nlp_prev_state = ndlp->nlp_state;
2796 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PRLI_ISSUE);
2797 lpfc_issue_els_prli(vport, ndlp, cmdiocb->retry);
2800 ndlp->nlp_prev_state = ndlp->nlp_state;
2801 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2802 lpfc_issue_els_logo(vport, ndlp, cmdiocb->retry);
2806 /* No retry ELS command <elsCmd> to remote NPORT <did> */
2808 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
2809 "0137 No retry ELS command x%x to remote "
2810 "NPORT x%x: Out of Resources: Error:x%x/%x\n",
2811 cmd, did, irsp->ulpStatus,
2812 irsp->un.ulpWord[4]);
2815 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
2816 "0108 No retry ELS command x%x to remote "
2817 "NPORT x%x Retried:%d Error:x%x/%x\n",
2818 cmd, did, cmdiocb->retry, irsp->ulpStatus,
2819 irsp->un.ulpWord[4]);
2825 * lpfc_els_free_data - Free lpfc dma buffer and data structure with an iocb
2826 * @phba: pointer to lpfc hba data structure.
2827 * @buf_ptr1: pointer to the lpfc DMA buffer data structure.
2829 * This routine releases the lpfc DMA (Direct Memory Access) buffer(s)
2830 * associated with a command IOCB back to the lpfc DMA buffer pool. It first
2831 * checks to see whether there is a lpfc DMA buffer associated with the
2832 * response of the command IOCB. If so, it will be released before releasing
2833 * the lpfc DMA buffer associated with the IOCB itself.
2836 * 0 - Successfully released lpfc DMA buffer (currently, always return 0)
2839 lpfc_els_free_data(struct lpfc_hba *phba, struct lpfc_dmabuf *buf_ptr1)
2841 struct lpfc_dmabuf *buf_ptr;
2843 /* Free the response before processing the command. */
2844 if (!list_empty(&buf_ptr1->list)) {
2845 list_remove_head(&buf_ptr1->list, buf_ptr,
2848 lpfc_mbuf_free(phba, buf_ptr->virt, buf_ptr->phys);
2851 lpfc_mbuf_free(phba, buf_ptr1->virt, buf_ptr1->phys);
2857 * lpfc_els_free_bpl - Free lpfc dma buffer and data structure with bpl
2858 * @phba: pointer to lpfc hba data structure.
2859 * @buf_ptr: pointer to the lpfc dma buffer data structure.
2861 * This routine releases the lpfc Direct Memory Access (DMA) buffer
2862 * associated with a Buffer Pointer List (BPL) back to the lpfc DMA buffer
2866 * 0 - Successfully released lpfc DMA buffer (currently, always return 0)
2869 lpfc_els_free_bpl(struct lpfc_hba *phba, struct lpfc_dmabuf *buf_ptr)
2871 lpfc_mbuf_free(phba, buf_ptr->virt, buf_ptr->phys);
2877 * lpfc_els_free_iocb - Free a command iocb and its associated resources
2878 * @phba: pointer to lpfc hba data structure.
2879 * @elsiocb: pointer to lpfc els command iocb data structure.
2881 * This routine frees a command IOCB and its associated resources. The
2882 * command IOCB data structure contains the reference to various associated
2883 * resources, these fields must be set to NULL if the associated reference
2885 * context1 - reference to ndlp
2886 * context2 - reference to cmd
2887 * context2->next - reference to rsp
2888 * context3 - reference to bpl
2890 * It first properly decrements the reference count held on ndlp for the
2891 * IOCB completion callback function. If LPFC_DELAY_MEM_FREE flag is not
2892 * set, it invokes the lpfc_els_free_data() routine to release the Direct
2893 * Memory Access (DMA) buffers associated with the IOCB. Otherwise, it
2894 * adds the DMA buffer the @phba data structure for the delayed release.
2895 * If reference to the Buffer Pointer List (BPL) is present, the
2896 * lpfc_els_free_bpl() routine is invoked to release the DMA memory
2897 * associated with BPL. Finally, the lpfc_sli_release_iocbq() routine is
2898 * invoked to release the IOCB data structure back to @phba IOCBQ list.
2901 * 0 - Success (currently, always return 0)
2904 lpfc_els_free_iocb(struct lpfc_hba *phba, struct lpfc_iocbq *elsiocb)
2906 struct lpfc_dmabuf *buf_ptr, *buf_ptr1;
2907 struct lpfc_nodelist *ndlp;
2909 ndlp = (struct lpfc_nodelist *)elsiocb->context1;
2911 if (ndlp->nlp_flag & NLP_DEFER_RM) {
2914 /* If the ndlp is not being used by another discovery
2917 if (!lpfc_nlp_not_used(ndlp)) {
2918 /* If ndlp is being used by another discovery
2919 * thread, just clear NLP_DEFER_RM
2921 ndlp->nlp_flag &= ~NLP_DEFER_RM;
2926 elsiocb->context1 = NULL;
2928 /* context2 = cmd, context2->next = rsp, context3 = bpl */
2929 if (elsiocb->context2) {
2930 if (elsiocb->iocb_flag & LPFC_DELAY_MEM_FREE) {
2931 /* Firmware could still be in progress of DMAing
2932 * payload, so don't free data buffer till after
2935 elsiocb->iocb_flag &= ~LPFC_DELAY_MEM_FREE;
2936 buf_ptr = elsiocb->context2;
2937 elsiocb->context2 = NULL;
2940 spin_lock_irq(&phba->hbalock);
2941 if (!list_empty(&buf_ptr->list)) {
2942 list_remove_head(&buf_ptr->list,
2943 buf_ptr1, struct lpfc_dmabuf,
2945 INIT_LIST_HEAD(&buf_ptr1->list);
2946 list_add_tail(&buf_ptr1->list,
2950 INIT_LIST_HEAD(&buf_ptr->list);
2951 list_add_tail(&buf_ptr->list, &phba->elsbuf);
2953 spin_unlock_irq(&phba->hbalock);
2956 buf_ptr1 = (struct lpfc_dmabuf *) elsiocb->context2;
2957 lpfc_els_free_data(phba, buf_ptr1);
2961 if (elsiocb->context3) {
2962 buf_ptr = (struct lpfc_dmabuf *) elsiocb->context3;
2963 lpfc_els_free_bpl(phba, buf_ptr);
2965 lpfc_sli_release_iocbq(phba, elsiocb);
2970 * lpfc_cmpl_els_logo_acc - Completion callback function to logo acc response
2971 * @phba: pointer to lpfc hba data structure.
2972 * @cmdiocb: pointer to lpfc command iocb data structure.
2973 * @rspiocb: pointer to lpfc response iocb data structure.
2975 * This routine is the completion callback function to the Logout (LOGO)
2976 * Accept (ACC) Response ELS command. This routine is invoked to indicate
2977 * the completion of the LOGO process. It invokes the lpfc_nlp_not_used() to
2978 * release the ndlp if it has the last reference remaining (reference count
2979 * is 1). If succeeded (meaning ndlp released), it sets the IOCB context1
2980 * field to NULL to inform the following lpfc_els_free_iocb() routine no
2981 * ndlp reference count needs to be decremented. Otherwise, the ndlp
2982 * reference use-count shall be decremented by the lpfc_els_free_iocb()
2983 * routine. Finally, the lpfc_els_free_iocb() is invoked to release the
2984 * IOCB data structure.
2987 lpfc_cmpl_els_logo_acc(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
2988 struct lpfc_iocbq *rspiocb)
2990 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) cmdiocb->context1;
2991 struct lpfc_vport *vport = cmdiocb->vport;
2994 irsp = &rspiocb->iocb;
2995 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
2996 "ACC LOGO cmpl: status:x%x/x%x did:x%x",
2997 irsp->ulpStatus, irsp->un.ulpWord[4], ndlp->nlp_DID);
2998 /* ACC to LOGO completes to NPort <nlp_DID> */
2999 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
3000 "0109 ACC to LOGO completes to NPort x%x "
3001 "Data: x%x x%x x%x\n",
3002 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
3005 if (ndlp->nlp_state == NLP_STE_NPR_NODE) {
3006 /* NPort Recovery mode or node is just allocated */
3007 if (!lpfc_nlp_not_used(ndlp)) {
3008 /* If the ndlp is being used by another discovery
3009 * thread, just unregister the RPI.
3011 lpfc_unreg_rpi(vport, ndlp);
3013 /* Indicate the node has already released, should
3014 * not reference to it from within lpfc_els_free_iocb.
3016 cmdiocb->context1 = NULL;
3019 lpfc_els_free_iocb(phba, cmdiocb);
3024 * lpfc_mbx_cmpl_dflt_rpi - Completion callbk func for unreg dflt rpi mbox cmd
3025 * @phba: pointer to lpfc hba data structure.
3026 * @pmb: pointer to the driver internal queue element for mailbox command.
3028 * This routine is the completion callback function for unregister default
3029 * RPI (Remote Port Index) mailbox command to the @phba. It simply releases
3030 * the associated lpfc Direct Memory Access (DMA) buffer back to the pool and
3031 * decrements the ndlp reference count held for this completion callback
3032 * function. After that, it invokes the lpfc_nlp_not_used() to check
3033 * whether there is only one reference left on the ndlp. If so, it will
3034 * perform one more decrement and trigger the release of the ndlp.
3037 lpfc_mbx_cmpl_dflt_rpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
3039 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
3040 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2;
3043 * This routine is used to register and unregister in previous SLI
3046 if ((pmb->u.mb.mbxCommand == MBX_UNREG_LOGIN) &&
3047 (phba->sli_rev == LPFC_SLI_REV4))
3048 lpfc_sli4_free_rpi(phba, pmb->u.mb.un.varUnregLogin.rpi);
3050 pmb->context1 = NULL;
3051 lpfc_mbuf_free(phba, mp->virt, mp->phys);
3053 mempool_free(pmb, phba->mbox_mem_pool);
3054 if (ndlp && NLP_CHK_NODE_ACT(ndlp)) {
3056 /* This is the end of the default RPI cleanup logic for this
3057 * ndlp. If no other discovery threads are using this ndlp.
3058 * we should free all resources associated with it.
3060 lpfc_nlp_not_used(ndlp);
3067 * lpfc_cmpl_els_rsp - Completion callback function for els response iocb cmd
3068 * @phba: pointer to lpfc hba data structure.
3069 * @cmdiocb: pointer to lpfc command iocb data structure.
3070 * @rspiocb: pointer to lpfc response iocb data structure.
3072 * This routine is the completion callback function for ELS Response IOCB
3073 * command. In normal case, this callback function just properly sets the
3074 * nlp_flag bitmap in the ndlp data structure, if the mbox command reference
3075 * field in the command IOCB is not NULL, the referred mailbox command will
3076 * be send out, and then invokes the lpfc_els_free_iocb() routine to release
3077 * the IOCB. Under error conditions, such as when a LS_RJT is returned or a
3078 * link down event occurred during the discovery, the lpfc_nlp_not_used()
3079 * routine shall be invoked trying to release the ndlp if no other threads
3080 * are currently referring it.
3083 lpfc_cmpl_els_rsp(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
3084 struct lpfc_iocbq *rspiocb)
3086 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) cmdiocb->context1;
3087 struct lpfc_vport *vport = ndlp ? ndlp->vport : NULL;
3088 struct Scsi_Host *shost = vport ? lpfc_shost_from_vport(vport) : NULL;
3091 LPFC_MBOXQ_t *mbox = NULL;
3092 struct lpfc_dmabuf *mp = NULL;
3093 uint32_t ls_rjt = 0;
3095 irsp = &rspiocb->iocb;
3097 if (cmdiocb->context_un.mbox)
3098 mbox = cmdiocb->context_un.mbox;
3100 /* First determine if this is a LS_RJT cmpl. Note, this callback
3101 * function can have cmdiocb->contest1 (ndlp) field set to NULL.
3103 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) cmdiocb->context2)->virt);
3104 if (ndlp && NLP_CHK_NODE_ACT(ndlp) &&
3105 (*((uint32_t *) (pcmd)) == ELS_CMD_LS_RJT)) {
3106 /* A LS_RJT associated with Default RPI cleanup has its own
3107 * seperate code path.
3109 if (!(ndlp->nlp_flag & NLP_RM_DFLT_RPI))
3113 /* Check to see if link went down during discovery */
3114 if (!ndlp || !NLP_CHK_NODE_ACT(ndlp) || lpfc_els_chk_latt(vport)) {
3116 mp = (struct lpfc_dmabuf *) mbox->context1;
3118 lpfc_mbuf_free(phba, mp->virt, mp->phys);
3121 mempool_free(mbox, phba->mbox_mem_pool);
3123 if (ndlp && NLP_CHK_NODE_ACT(ndlp) &&
3124 (ndlp->nlp_flag & NLP_RM_DFLT_RPI))
3125 if (lpfc_nlp_not_used(ndlp)) {
3127 /* Indicate the node has already released,
3128 * should not reference to it from within
3129 * the routine lpfc_els_free_iocb.
3131 cmdiocb->context1 = NULL;
3136 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
3137 "ELS rsp cmpl: status:x%x/x%x did:x%x",
3138 irsp->ulpStatus, irsp->un.ulpWord[4],
3139 cmdiocb->iocb.un.elsreq64.remoteID);
3140 /* ELS response tag <ulpIoTag> completes */
3141 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
3142 "0110 ELS response tag x%x completes "
3143 "Data: x%x x%x x%x x%x x%x x%x x%x\n",
3144 cmdiocb->iocb.ulpIoTag, rspiocb->iocb.ulpStatus,
3145 rspiocb->iocb.un.ulpWord[4], rspiocb->iocb.ulpTimeout,
3146 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
3149 if ((rspiocb->iocb.ulpStatus == 0)
3150 && (ndlp->nlp_flag & NLP_ACC_REGLOGIN)) {
3151 lpfc_unreg_rpi(vport, ndlp);
3152 /* Increment reference count to ndlp to hold the
3153 * reference to ndlp for the callback function.
3155 mbox->context2 = lpfc_nlp_get(ndlp);
3156 mbox->vport = vport;
3157 if (ndlp->nlp_flag & NLP_RM_DFLT_RPI) {
3158 mbox->mbox_flag |= LPFC_MBX_IMED_UNREG;
3159 mbox->mbox_cmpl = lpfc_mbx_cmpl_dflt_rpi;
3162 mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login;
3163 ndlp->nlp_prev_state = ndlp->nlp_state;
3164 lpfc_nlp_set_state(vport, ndlp,
3165 NLP_STE_REG_LOGIN_ISSUE);
3167 if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT)
3168 != MBX_NOT_FINISHED)
3171 /* Decrement the ndlp reference count we
3172 * set for this failed mailbox command.
3176 /* ELS rsp: Cannot issue reg_login for <NPortid> */
3177 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
3178 "0138 ELS rsp: Cannot issue reg_login for x%x "
3179 "Data: x%x x%x x%x\n",
3180 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
3183 if (lpfc_nlp_not_used(ndlp)) {
3185 /* Indicate node has already been released,
3186 * should not reference to it from within
3187 * the routine lpfc_els_free_iocb.
3189 cmdiocb->context1 = NULL;
3192 /* Do not drop node for lpfc_els_abort'ed ELS cmds */
3193 if (!lpfc_error_lost_link(irsp) &&
3194 ndlp->nlp_flag & NLP_ACC_REGLOGIN) {
3195 if (lpfc_nlp_not_used(ndlp)) {
3197 /* Indicate node has already been
3198 * released, should not reference
3199 * to it from within the routine
3200 * lpfc_els_free_iocb.
3202 cmdiocb->context1 = NULL;
3206 mp = (struct lpfc_dmabuf *) mbox->context1;
3208 lpfc_mbuf_free(phba, mp->virt, mp->phys);
3211 mempool_free(mbox, phba->mbox_mem_pool);
3214 if (ndlp && NLP_CHK_NODE_ACT(ndlp)) {
3215 spin_lock_irq(shost->host_lock);
3216 ndlp->nlp_flag &= ~(NLP_ACC_REGLOGIN | NLP_RM_DFLT_RPI);
3217 spin_unlock_irq(shost->host_lock);
3219 /* If the node is not being used by another discovery thread,
3220 * and we are sending a reject, we are done with it.
3221 * Release driver reference count here and free associated
3225 if (lpfc_nlp_not_used(ndlp))
3226 /* Indicate node has already been released,
3227 * should not reference to it from within
3228 * the routine lpfc_els_free_iocb.
3230 cmdiocb->context1 = NULL;
3233 lpfc_els_free_iocb(phba, cmdiocb);
3238 * lpfc_els_rsp_acc - Prepare and issue an acc response iocb command
3239 * @vport: pointer to a host virtual N_Port data structure.
3240 * @flag: the els command code to be accepted.
3241 * @oldiocb: pointer to the original lpfc command iocb data structure.
3242 * @ndlp: pointer to a node-list data structure.
3243 * @mbox: pointer to the driver internal queue element for mailbox command.
3245 * This routine prepares and issues an Accept (ACC) response IOCB
3246 * command. It uses the @flag to properly set up the IOCB field for the
3247 * specific ACC response command to be issued and invokes the
3248 * lpfc_sli_issue_iocb() routine to send out ACC response IOCB. If a
3249 * @mbox pointer is passed in, it will be put into the context_un.mbox
3250 * field of the IOCB for the completion callback function to issue the
3251 * mailbox command to the HBA later when callback is invoked.
3253 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
3254 * will be incremented by 1 for holding the ndlp and the reference to ndlp
3255 * will be stored into the context1 field of the IOCB for the completion
3256 * callback function to the corresponding response ELS IOCB command.
3259 * 0 - Successfully issued acc response
3260 * 1 - Failed to issue acc response
3263 lpfc_els_rsp_acc(struct lpfc_vport *vport, uint32_t flag,
3264 struct lpfc_iocbq *oldiocb, struct lpfc_nodelist *ndlp,
3267 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3268 struct lpfc_hba *phba = vport->phba;
3271 struct lpfc_iocbq *elsiocb;
3272 struct lpfc_sli *psli;
3276 ELS_PKT *els_pkt_ptr;
3279 oldcmd = &oldiocb->iocb;
3283 cmdsize = sizeof(uint32_t);
3284 elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry,
3285 ndlp, ndlp->nlp_DID, ELS_CMD_ACC);
3287 spin_lock_irq(shost->host_lock);
3288 ndlp->nlp_flag &= ~NLP_LOGO_ACC;
3289 spin_unlock_irq(shost->host_lock);
3293 icmd = &elsiocb->iocb;
3294 icmd->ulpContext = oldcmd->ulpContext; /* Xri */
3295 pcmd = (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
3296 *((uint32_t *) (pcmd)) = ELS_CMD_ACC;
3297 pcmd += sizeof(uint32_t);
3299 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
3300 "Issue ACC: did:x%x flg:x%x",
3301 ndlp->nlp_DID, ndlp->nlp_flag, 0);
3304 cmdsize = (sizeof(struct serv_parm) + sizeof(uint32_t));
3305 elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry,
3306 ndlp, ndlp->nlp_DID, ELS_CMD_ACC);
3310 icmd = &elsiocb->iocb;
3311 icmd->ulpContext = oldcmd->ulpContext; /* Xri */
3312 pcmd = (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
3315 elsiocb->context_un.mbox = mbox;
3317 *((uint32_t *) (pcmd)) = ELS_CMD_ACC;
3318 pcmd += sizeof(uint32_t);
3319 memcpy(pcmd, &vport->fc_sparam, sizeof(struct serv_parm));
3321 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
3322 "Issue ACC PLOGI: did:x%x flg:x%x",
3323 ndlp->nlp_DID, ndlp->nlp_flag, 0);
3326 cmdsize = sizeof(uint32_t) + sizeof(PRLO);
3327 elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry,
3328 ndlp, ndlp->nlp_DID, ELS_CMD_PRLO);
3332 icmd = &elsiocb->iocb;
3333 icmd->ulpContext = oldcmd->ulpContext; /* Xri */
3334 pcmd = (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
3336 memcpy(pcmd, ((struct lpfc_dmabuf *) oldiocb->context2)->virt,
3337 sizeof(uint32_t) + sizeof(PRLO));
3338 *((uint32_t *) (pcmd)) = ELS_CMD_PRLO_ACC;
3339 els_pkt_ptr = (ELS_PKT *) pcmd;
3340 els_pkt_ptr->un.prlo.acceptRspCode = PRLO_REQ_EXECUTED;
3342 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
3343 "Issue ACC PRLO: did:x%x flg:x%x",
3344 ndlp->nlp_DID, ndlp->nlp_flag, 0);
3349 /* Xmit ELS ACC response tag <ulpIoTag> */
3350 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
3351 "0128 Xmit ELS ACC response tag x%x, XRI: x%x, "
3352 "DID: x%x, nlp_flag: x%x nlp_state: x%x RPI: x%x\n",
3353 elsiocb->iotag, elsiocb->iocb.ulpContext,
3354 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
3356 if (ndlp->nlp_flag & NLP_LOGO_ACC) {
3357 spin_lock_irq(shost->host_lock);
3358 ndlp->nlp_flag &= ~NLP_LOGO_ACC;
3359 spin_unlock_irq(shost->host_lock);
3360 elsiocb->iocb_cmpl = lpfc_cmpl_els_logo_acc;
3362 elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp;
3365 phba->fc_stat.elsXmitACC++;
3366 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
3367 if (rc == IOCB_ERROR) {
3368 lpfc_els_free_iocb(phba, elsiocb);
3375 * lpfc_els_rsp_reject - Propare and issue a rjt response iocb command
3376 * @vport: pointer to a virtual N_Port data structure.
3378 * @oldiocb: pointer to the original lpfc command iocb data structure.
3379 * @ndlp: pointer to a node-list data structure.
3380 * @mbox: pointer to the driver internal queue element for mailbox command.
3382 * This routine prepares and issue an Reject (RJT) response IOCB
3383 * command. If a @mbox pointer is passed in, it will be put into the
3384 * context_un.mbox field of the IOCB for the completion callback function
3385 * to issue to the HBA later.
3387 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
3388 * will be incremented by 1 for holding the ndlp and the reference to ndlp
3389 * will be stored into the context1 field of the IOCB for the completion
3390 * callback function to the reject response ELS IOCB command.
3393 * 0 - Successfully issued reject response
3394 * 1 - Failed to issue reject response
3397 lpfc_els_rsp_reject(struct lpfc_vport *vport, uint32_t rejectError,
3398 struct lpfc_iocbq *oldiocb, struct lpfc_nodelist *ndlp,
3401 struct lpfc_hba *phba = vport->phba;
3404 struct lpfc_iocbq *elsiocb;
3405 struct lpfc_sli *psli;
3411 cmdsize = 2 * sizeof(uint32_t);
3412 elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp,
3413 ndlp->nlp_DID, ELS_CMD_LS_RJT);
3417 icmd = &elsiocb->iocb;
3418 oldcmd = &oldiocb->iocb;
3419 icmd->ulpContext = oldcmd->ulpContext; /* Xri */
3420 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
3422 *((uint32_t *) (pcmd)) = ELS_CMD_LS_RJT;
3423 pcmd += sizeof(uint32_t);
3424 *((uint32_t *) (pcmd)) = rejectError;
3427 elsiocb->context_un.mbox = mbox;
3429 /* Xmit ELS RJT <err> response tag <ulpIoTag> */
3430 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
3431 "0129 Xmit ELS RJT x%x response tag x%x "
3432 "xri x%x, did x%x, nlp_flag x%x, nlp_state x%x, "
3434 rejectError, elsiocb->iotag,
3435 elsiocb->iocb.ulpContext, ndlp->nlp_DID,
3436 ndlp->nlp_flag, ndlp->nlp_state, ndlp->nlp_rpi);
3437 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
3438 "Issue LS_RJT: did:x%x flg:x%x err:x%x",
3439 ndlp->nlp_DID, ndlp->nlp_flag, rejectError);
3441 phba->fc_stat.elsXmitLSRJT++;
3442 elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp;
3443 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
3445 if (rc == IOCB_ERROR) {
3446 lpfc_els_free_iocb(phba, elsiocb);
3453 * lpfc_els_rsp_adisc_acc - Prepare and issue acc response to adisc iocb cmd
3454 * @vport: pointer to a virtual N_Port data structure.
3455 * @oldiocb: pointer to the original lpfc command iocb data structure.
3456 * @ndlp: pointer to a node-list data structure.
3458 * This routine prepares and issues an Accept (ACC) response to Address
3459 * Discover (ADISC) ELS command. It simply prepares the payload of the IOCB
3460 * and invokes the lpfc_sli_issue_iocb() routine to send out the command.
3462 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
3463 * will be incremented by 1 for holding the ndlp and the reference to ndlp
3464 * will be stored into the context1 field of the IOCB for the completion
3465 * callback function to the ADISC Accept response ELS IOCB command.
3468 * 0 - Successfully issued acc adisc response
3469 * 1 - Failed to issue adisc acc response
3472 lpfc_els_rsp_adisc_acc(struct lpfc_vport *vport, struct lpfc_iocbq *oldiocb,
3473 struct lpfc_nodelist *ndlp)
3475 struct lpfc_hba *phba = vport->phba;
3477 IOCB_t *icmd, *oldcmd;
3478 struct lpfc_iocbq *elsiocb;
3483 cmdsize = sizeof(uint32_t) + sizeof(ADISC);
3484 elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp,
3485 ndlp->nlp_DID, ELS_CMD_ACC);
3489 icmd = &elsiocb->iocb;
3490 oldcmd = &oldiocb->iocb;
3491 icmd->ulpContext = oldcmd->ulpContext; /* Xri */
3493 /* Xmit ADISC ACC response tag <ulpIoTag> */
3494 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
3495 "0130 Xmit ADISC ACC response iotag x%x xri: "
3496 "x%x, did x%x, nlp_flag x%x, nlp_state x%x rpi x%x\n",
3497 elsiocb->iotag, elsiocb->iocb.ulpContext,
3498 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
3500 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
3502 *((uint32_t *) (pcmd)) = ELS_CMD_ACC;
3503 pcmd += sizeof(uint32_t);
3505 ap = (ADISC *) (pcmd);
3506 ap->hardAL_PA = phba->fc_pref_ALPA;
3507 memcpy(&ap->portName, &vport->fc_portname, sizeof(struct lpfc_name));
3508 memcpy(&ap->nodeName, &vport->fc_nodename, sizeof(struct lpfc_name));
3509 ap->DID = be32_to_cpu(vport->fc_myDID);
3511 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
3512 "Issue ACC ADISC: did:x%x flg:x%x",
3513 ndlp->nlp_DID, ndlp->nlp_flag, 0);
3515 phba->fc_stat.elsXmitACC++;
3516 elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp;
3517 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
3518 if (rc == IOCB_ERROR) {
3519 lpfc_els_free_iocb(phba, elsiocb);
3526 * lpfc_els_rsp_prli_acc - Prepare and issue acc response to prli iocb cmd
3527 * @vport: pointer to a virtual N_Port data structure.
3528 * @oldiocb: pointer to the original lpfc command iocb data structure.
3529 * @ndlp: pointer to a node-list data structure.
3531 * This routine prepares and issues an Accept (ACC) response to Process
3532 * Login (PRLI) ELS command. It simply prepares the payload of the IOCB
3533 * and invokes the lpfc_sli_issue_iocb() routine to send out the command.
3535 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
3536 * will be incremented by 1 for holding the ndlp and the reference to ndlp
3537 * will be stored into the context1 field of the IOCB for the completion
3538 * callback function to the PRLI Accept response ELS IOCB command.
3541 * 0 - Successfully issued acc prli response
3542 * 1 - Failed to issue acc prli response
3545 lpfc_els_rsp_prli_acc(struct lpfc_vport *vport, struct lpfc_iocbq *oldiocb,
3546 struct lpfc_nodelist *ndlp)
3548 struct lpfc_hba *phba = vport->phba;
3553 struct lpfc_iocbq *elsiocb;
3554 struct lpfc_sli *psli;
3561 cmdsize = sizeof(uint32_t) + sizeof(PRLI);
3562 elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp,
3563 ndlp->nlp_DID, (ELS_CMD_ACC | (ELS_CMD_PRLI & ~ELS_RSP_MASK)));
3567 icmd = &elsiocb->iocb;
3568 oldcmd = &oldiocb->iocb;
3569 icmd->ulpContext = oldcmd->ulpContext; /* Xri */
3570 /* Xmit PRLI ACC response tag <ulpIoTag> */
3571 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
3572 "0131 Xmit PRLI ACC response tag x%x xri x%x, "
3573 "did x%x, nlp_flag x%x, nlp_state x%x, rpi x%x\n",
3574 elsiocb->iotag, elsiocb->iocb.ulpContext,
3575 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
3577 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
3579 *((uint32_t *) (pcmd)) = (ELS_CMD_ACC | (ELS_CMD_PRLI & ~ELS_RSP_MASK));
3580 pcmd += sizeof(uint32_t);
3582 /* For PRLI, remainder of payload is PRLI parameter page */
3583 memset(pcmd, 0, sizeof(PRLI));
3585 npr = (PRLI *) pcmd;
3588 * If the remote port is a target and our firmware version is 3.20 or
3589 * later, set the following bits for FC-TAPE support.
3591 if ((ndlp->nlp_type & NLP_FCP_TARGET) &&
3592 (vpd->rev.feaLevelHigh >= 0x02)) {
3593 npr->ConfmComplAllowed = 1;
3595 npr->TaskRetryIdReq = 1;
3598 npr->acceptRspCode = PRLI_REQ_EXECUTED;
3599 npr->estabImagePair = 1;
3600 npr->readXferRdyDis = 1;
3601 npr->ConfmComplAllowed = 1;
3603 npr->prliType = PRLI_FCP_TYPE;
3604 npr->initiatorFunc = 1;
3606 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
3607 "Issue ACC PRLI: did:x%x flg:x%x",
3608 ndlp->nlp_DID, ndlp->nlp_flag, 0);
3610 phba->fc_stat.elsXmitACC++;
3611 elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp;
3613 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
3614 if (rc == IOCB_ERROR) {
3615 lpfc_els_free_iocb(phba, elsiocb);
3622 * lpfc_els_rsp_rnid_acc - Issue rnid acc response iocb command
3623 * @vport: pointer to a virtual N_Port data structure.
3624 * @format: rnid command format.
3625 * @oldiocb: pointer to the original lpfc command iocb data structure.
3626 * @ndlp: pointer to a node-list data structure.
3628 * This routine issues a Request Node Identification Data (RNID) Accept
3629 * (ACC) response. It constructs the RNID ACC response command according to
3630 * the proper @format and then calls the lpfc_sli_issue_iocb() routine to
3631 * issue the response. Note that this command does not need to hold the ndlp
3632 * reference count for the callback. So, the ndlp reference count taken by
3633 * the lpfc_prep_els_iocb() routine is put back and the context1 field of
3634 * IOCB is set to NULL to indicate to the lpfc_els_free_iocb() routine that
3635 * there is no ndlp reference available.
3637 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
3638 * will be incremented by 1 for holding the ndlp and the reference to ndlp
3639 * will be stored into the context1 field of the IOCB for the completion
3640 * callback function. However, for the RNID Accept Response ELS command,
3641 * this is undone later by this routine after the IOCB is allocated.
3644 * 0 - Successfully issued acc rnid response
3645 * 1 - Failed to issue acc rnid response
3648 lpfc_els_rsp_rnid_acc(struct lpfc_vport *vport, uint8_t format,
3649 struct lpfc_iocbq *oldiocb, struct lpfc_nodelist *ndlp)
3651 struct lpfc_hba *phba = vport->phba;
3653 IOCB_t *icmd, *oldcmd;
3654 struct lpfc_iocbq *elsiocb;
3655 struct lpfc_sli *psli;
3661 cmdsize = sizeof(uint32_t) + sizeof(uint32_t)
3662 + (2 * sizeof(struct lpfc_name));
3664 cmdsize += sizeof(RNID_TOP_DISC);
3666 elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp,
3667 ndlp->nlp_DID, ELS_CMD_ACC);
3671 icmd = &elsiocb->iocb;
3672 oldcmd = &oldiocb->iocb;
3673 icmd->ulpContext = oldcmd->ulpContext; /* Xri */
3674 /* Xmit RNID ACC response tag <ulpIoTag> */
3675 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
3676 "0132 Xmit RNID ACC response tag x%x xri x%x\n",
3677 elsiocb->iotag, elsiocb->iocb.ulpContext);
3678 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
3679 *((uint32_t *) (pcmd)) = ELS_CMD_ACC;
3680 pcmd += sizeof(uint32_t);
3682 memset(pcmd, 0, sizeof(RNID));
3683 rn = (RNID *) (pcmd);
3684 rn->Format = format;
3685 rn->CommonLen = (2 * sizeof(struct lpfc_name));
3686 memcpy(&rn->portName, &vport->fc_portname, sizeof(struct lpfc_name));
3687 memcpy(&rn->nodeName, &vport->fc_nodename, sizeof(struct lpfc_name));
3690 rn->SpecificLen = 0;
3692 case RNID_TOPOLOGY_DISC:
3693 rn->SpecificLen = sizeof(RNID_TOP_DISC);
3694 memcpy(&rn->un.topologyDisc.portName,
3695 &vport->fc_portname, sizeof(struct lpfc_name));
3696 rn->un.topologyDisc.unitType = RNID_HBA;
3697 rn->un.topologyDisc.physPort = 0;
3698 rn->un.topologyDisc.attachedNodes = 0;
3702 rn->SpecificLen = 0;
3706 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
3707 "Issue ACC RNID: did:x%x flg:x%x",
3708 ndlp->nlp_DID, ndlp->nlp_flag, 0);
3710 phba->fc_stat.elsXmitACC++;
3711 elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp;
3713 elsiocb->context1 = NULL; /* Don't need ndlp for cmpl,
3714 * it could be freed */
3716 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
3717 if (rc == IOCB_ERROR) {
3718 lpfc_els_free_iocb(phba, elsiocb);
3725 * lpfc_els_disc_adisc - Issue remaining adisc iocbs to npr nodes of a vport
3726 * @vport: pointer to a host virtual N_Port data structure.
3728 * This routine issues Address Discover (ADISC) ELS commands to those
3729 * N_Ports which are in node port recovery state and ADISC has not been issued
3730 * for the @vport. Each time an ELS ADISC IOCB is issued by invoking the
3731 * lpfc_issue_els_adisc() routine, the per @vport number of discover count
3732 * (num_disc_nodes) shall be incremented. If the num_disc_nodes reaches a
3733 * pre-configured threshold (cfg_discovery_threads), the @vport fc_flag will
3734 * be marked with FC_NLP_MORE bit and the process of issuing remaining ADISC
3735 * IOCBs quit for later pick up. On the other hand, after walking through
3736 * all the ndlps with the @vport and there is none ADISC IOCB issued, the
3737 * @vport fc_flag shall be cleared with FC_NLP_MORE bit indicating there is
3738 * no more ADISC need to be sent.
3741 * The number of N_Ports with adisc issued.
3744 lpfc_els_disc_adisc(struct lpfc_vport *vport)
3746 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3747 struct lpfc_nodelist *ndlp, *next_ndlp;
3750 /* go thru NPR nodes and issue any remaining ELS ADISCs */
3751 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) {
3752 if (!NLP_CHK_NODE_ACT(ndlp))
3754 if (ndlp->nlp_state == NLP_STE_NPR_NODE &&
3755 (ndlp->nlp_flag & NLP_NPR_2B_DISC) != 0 &&
3756 (ndlp->nlp_flag & NLP_NPR_ADISC) != 0) {
3757 spin_lock_irq(shost->host_lock);
3758 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
3759 spin_unlock_irq(shost->host_lock);
3760 ndlp->nlp_prev_state = ndlp->nlp_state;
3761 lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
3762 lpfc_issue_els_adisc(vport, ndlp, 0);
3764 vport->num_disc_nodes++;
3765 if (vport->num_disc_nodes >=
3766 vport->cfg_discovery_threads) {
3767 spin_lock_irq(shost->host_lock);
3768 vport->fc_flag |= FC_NLP_MORE;
3769 spin_unlock_irq(shost->host_lock);
3774 if (sentadisc == 0) {
3775 spin_lock_irq(shost->host_lock);
3776 vport->fc_flag &= ~FC_NLP_MORE;
3777 spin_unlock_irq(shost->host_lock);
3783 * lpfc_els_disc_plogi - Issue plogi for all npr nodes of a vport before adisc
3784 * @vport: pointer to a host virtual N_Port data structure.
3786 * This routine issues Port Login (PLOGI) ELS commands to all the N_Ports
3787 * which are in node port recovery state, with a @vport. Each time an ELS
3788 * ADISC PLOGI IOCB is issued by invoking the lpfc_issue_els_plogi() routine,
3789 * the per @vport number of discover count (num_disc_nodes) shall be
3790 * incremented. If the num_disc_nodes reaches a pre-configured threshold
3791 * (cfg_discovery_threads), the @vport fc_flag will be marked with FC_NLP_MORE
3792 * bit set and quit the process of issuing remaining ADISC PLOGIN IOCBs for
3793 * later pick up. On the other hand, after walking through all the ndlps with
3794 * the @vport and there is none ADISC PLOGI IOCB issued, the @vport fc_flag
3795 * shall be cleared with the FC_NLP_MORE bit indicating there is no more ADISC
3796 * PLOGI need to be sent.
3799 * The number of N_Ports with plogi issued.
3802 lpfc_els_disc_plogi(struct lpfc_vport *vport)
3804 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3805 struct lpfc_nodelist *ndlp, *next_ndlp;
3808 /* go thru NPR nodes and issue any remaining ELS PLOGIs */
3809 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) {
3810 if (!NLP_CHK_NODE_ACT(ndlp))
3812 if (ndlp->nlp_state == NLP_STE_NPR_NODE &&
3813 (ndlp->nlp_flag & NLP_NPR_2B_DISC) != 0 &&
3814 (ndlp->nlp_flag & NLP_DELAY_TMO) == 0 &&
3815 (ndlp->nlp_flag & NLP_NPR_ADISC) == 0) {
3816 ndlp->nlp_prev_state = ndlp->nlp_state;
3817 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
3818 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
3820 vport->num_disc_nodes++;
3821 if (vport->num_disc_nodes >=
3822 vport->cfg_discovery_threads) {
3823 spin_lock_irq(shost->host_lock);
3824 vport->fc_flag |= FC_NLP_MORE;
3825 spin_unlock_irq(shost->host_lock);
3831 lpfc_set_disctmo(vport);
3834 spin_lock_irq(shost->host_lock);
3835 vport->fc_flag &= ~FC_NLP_MORE;
3836 spin_unlock_irq(shost->host_lock);
3842 * lpfc_els_flush_rscn - Clean up any rscn activities with a vport
3843 * @vport: pointer to a host virtual N_Port data structure.
3845 * This routine cleans up any Registration State Change Notification
3846 * (RSCN) activity with a @vport. Note that the fc_rscn_flush flag of the
3847 * @vport together with the host_lock is used to prevent multiple thread
3848 * trying to access the RSCN array on a same @vport at the same time.
3851 lpfc_els_flush_rscn(struct lpfc_vport *vport)
3853 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3854 struct lpfc_hba *phba = vport->phba;
3857 spin_lock_irq(shost->host_lock);
3858 if (vport->fc_rscn_flush) {
3859 /* Another thread is walking fc_rscn_id_list on this vport */
3860 spin_unlock_irq(shost->host_lock);
3863 /* Indicate we are walking lpfc_els_flush_rscn on this vport */
3864 vport->fc_rscn_flush = 1;
3865 spin_unlock_irq(shost->host_lock);
3867 for (i = 0; i < vport->fc_rscn_id_cnt; i++) {
3868 lpfc_in_buf_free(phba, vport->fc_rscn_id_list[i]);
3869 vport->fc_rscn_id_list[i] = NULL;
3871 spin_lock_irq(shost->host_lock);
3872 vport->fc_rscn_id_cnt = 0;
3873 vport->fc_flag &= ~(FC_RSCN_MODE | FC_RSCN_DISCOVERY);
3874 spin_unlock_irq(shost->host_lock);
3875 lpfc_can_disctmo(vport);
3876 /* Indicate we are done walking this fc_rscn_id_list */
3877 vport->fc_rscn_flush = 0;
3881 * lpfc_rscn_payload_check - Check whether there is a pending rscn to a did
3882 * @vport: pointer to a host virtual N_Port data structure.
3883 * @did: remote destination port identifier.
3885 * This routine checks whether there is any pending Registration State
3886 * Configuration Notification (RSCN) to a @did on @vport.
3889 * None zero - The @did matched with a pending rscn
3890 * 0 - not able to match @did with a pending rscn
3893 lpfc_rscn_payload_check(struct lpfc_vport *vport, uint32_t did)
3898 uint32_t payload_len, i;
3899 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3901 ns_did.un.word = did;
3903 /* Never match fabric nodes for RSCNs */
3904 if ((did & Fabric_DID_MASK) == Fabric_DID_MASK)
3907 /* If we are doing a FULL RSCN rediscovery, match everything */
3908 if (vport->fc_flag & FC_RSCN_DISCOVERY)
3911 spin_lock_irq(shost->host_lock);
3912 if (vport->fc_rscn_flush) {
3913 /* Another thread is walking fc_rscn_id_list on this vport */
3914 spin_unlock_irq(shost->host_lock);
3917 /* Indicate we are walking fc_rscn_id_list on this vport */
3918 vport->fc_rscn_flush = 1;
3919 spin_unlock_irq(shost->host_lock);
3920 for (i = 0; i < vport->fc_rscn_id_cnt; i++) {
3921 lp = vport->fc_rscn_id_list[i]->virt;
3922 payload_len = be32_to_cpu(*lp++ & ~ELS_CMD_MASK);
3923 payload_len -= sizeof(uint32_t); /* take off word 0 */
3924 while (payload_len) {
3925 rscn_did.un.word = be32_to_cpu(*lp++);
3926 payload_len -= sizeof(uint32_t);
3927 switch (rscn_did.un.b.resv & RSCN_ADDRESS_FORMAT_MASK) {
3928 case RSCN_ADDRESS_FORMAT_PORT:
3929 if ((ns_did.un.b.domain == rscn_did.un.b.domain)
3930 && (ns_did.un.b.area == rscn_did.un.b.area)
3931 && (ns_did.un.b.id == rscn_did.un.b.id))
3932 goto return_did_out;
3934 case RSCN_ADDRESS_FORMAT_AREA:
3935 if ((ns_did.un.b.domain == rscn_did.un.b.domain)
3936 && (ns_did.un.b.area == rscn_did.un.b.area))
3937 goto return_did_out;
3939 case RSCN_ADDRESS_FORMAT_DOMAIN:
3940 if (ns_did.un.b.domain == rscn_did.un.b.domain)
3941 goto return_did_out;
3943 case RSCN_ADDRESS_FORMAT_FABRIC:
3944 goto return_did_out;
3948 /* Indicate we are done with walking fc_rscn_id_list on this vport */
3949 vport->fc_rscn_flush = 0;
3952 /* Indicate we are done with walking fc_rscn_id_list on this vport */
3953 vport->fc_rscn_flush = 0;
3958 * lpfc_rscn_recovery_check - Send recovery event to vport nodes matching rscn
3959 * @vport: pointer to a host virtual N_Port data structure.
3961 * This routine sends recovery (NLP_EVT_DEVICE_RECOVERY) event to the
3962 * state machine for a @vport's nodes that are with pending RSCN (Registration
3963 * State Change Notification).
3966 * 0 - Successful (currently alway return 0)
3969 lpfc_rscn_recovery_check(struct lpfc_vport *vport)
3971 struct lpfc_nodelist *ndlp = NULL;
3973 /* Move all affected nodes by pending RSCNs to NPR state. */
3974 list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
3975 if (!NLP_CHK_NODE_ACT(ndlp) ||
3976 (ndlp->nlp_state == NLP_STE_UNUSED_NODE) ||
3977 !lpfc_rscn_payload_check(vport, ndlp->nlp_DID))
3979 lpfc_disc_state_machine(vport, ndlp, NULL,
3980 NLP_EVT_DEVICE_RECOVERY);
3981 lpfc_cancel_retry_delay_tmo(vport, ndlp);
3987 * lpfc_send_rscn_event - Send an RSCN event to management application
3988 * @vport: pointer to a host virtual N_Port data structure.
3989 * @cmdiocb: pointer to lpfc command iocb data structure.
3991 * lpfc_send_rscn_event sends an RSCN netlink event to management
3995 lpfc_send_rscn_event(struct lpfc_vport *vport,
3996 struct lpfc_iocbq *cmdiocb)
3998 struct lpfc_dmabuf *pcmd;
3999 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4000 uint32_t *payload_ptr;
4001 uint32_t payload_len;
4002 struct lpfc_rscn_event_header *rscn_event_data;
4004 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
4005 payload_ptr = (uint32_t *) pcmd->virt;
4006 payload_len = be32_to_cpu(*payload_ptr & ~ELS_CMD_MASK);
4008 rscn_event_data = kmalloc(sizeof(struct lpfc_rscn_event_header) +
4009 payload_len, GFP_KERNEL);
4010 if (!rscn_event_data) {
4011 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
4012 "0147 Failed to allocate memory for RSCN event\n");
4015 rscn_event_data->event_type = FC_REG_RSCN_EVENT;
4016 rscn_event_data->payload_length = payload_len;
4017 memcpy(rscn_event_data->rscn_payload, payload_ptr,
4020 fc_host_post_vendor_event(shost,
4021 fc_get_event_number(),
4022 sizeof(struct lpfc_els_event_header) + payload_len,
4023 (char *)rscn_event_data,
4026 kfree(rscn_event_data);
4030 * lpfc_els_rcv_rscn - Process an unsolicited rscn iocb
4031 * @vport: pointer to a host virtual N_Port data structure.
4032 * @cmdiocb: pointer to lpfc command iocb data structure.
4033 * @ndlp: pointer to a node-list data structure.
4035 * This routine processes an unsolicited RSCN (Registration State Change
4036 * Notification) IOCB. First, the payload of the unsolicited RSCN is walked
4037 * to invoke fc_host_post_event() routine to the FC transport layer. If the
4038 * discover state machine is about to begin discovery, it just accepts the
4039 * RSCN and the discovery process will satisfy the RSCN. If this RSCN only
4040 * contains N_Port IDs for other vports on this HBA, it just accepts the
4041 * RSCN and ignore processing it. If the state machine is in the recovery
4042 * state, the fc_rscn_id_list of this @vport is walked and the
4043 * lpfc_rscn_recovery_check() routine is invoked to send recovery event for
4044 * all nodes that match RSCN payload. Otherwise, the lpfc_els_handle_rscn()
4045 * routine is invoked to handle the RSCN event.
4048 * 0 - Just sent the acc response
4049 * 1 - Sent the acc response and waited for name server completion
4052 lpfc_els_rcv_rscn(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
4053 struct lpfc_nodelist *ndlp)
4055 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4056 struct lpfc_hba *phba = vport->phba;
4057 struct lpfc_dmabuf *pcmd;
4058 uint32_t *lp, *datap;
4060 uint32_t payload_len, length, nportid, *cmd;
4062 int rscn_id = 0, hba_id = 0;
4065 icmd = &cmdiocb->iocb;
4066 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
4067 lp = (uint32_t *) pcmd->virt;
4069 payload_len = be32_to_cpu(*lp++ & ~ELS_CMD_MASK);
4070 payload_len -= sizeof(uint32_t); /* take off word 0 */
4072 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
4073 "0214 RSCN received Data: x%x x%x x%x x%x\n",
4074 vport->fc_flag, payload_len, *lp,
4075 vport->fc_rscn_id_cnt);
4077 /* Send an RSCN event to the management application */
4078 lpfc_send_rscn_event(vport, cmdiocb);
4080 for (i = 0; i < payload_len/sizeof(uint32_t); i++)
4081 fc_host_post_event(shost, fc_get_event_number(),
4082 FCH_EVT_RSCN, lp[i]);
4084 /* If we are about to begin discovery, just ACC the RSCN.
4085 * Discovery processing will satisfy it.
4087 if (vport->port_state <= LPFC_NS_QRY) {
4088 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
4089 "RCV RSCN ignore: did:x%x/ste:x%x flg:x%x",
4090 ndlp->nlp_DID, vport->port_state, ndlp->nlp_flag);
4092 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
4096 /* If this RSCN just contains NPortIDs for other vports on this HBA,
4097 * just ACC and ignore it.
4099 if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
4100 !(vport->cfg_peer_port_login)) {
4105 nportid = ((be32_to_cpu(nportid)) & Mask_DID);
4106 i -= sizeof(uint32_t);
4108 if (lpfc_find_vport_by_did(phba, nportid))
4111 if (rscn_id == hba_id) {
4112 /* ALL NPortIDs in RSCN are on HBA */
4113 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
4115 "Data: x%x x%x x%x x%x\n",
4116 vport->fc_flag, payload_len,
4117 *lp, vport->fc_rscn_id_cnt);
4118 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
4119 "RCV RSCN vport: did:x%x/ste:x%x flg:x%x",
4120 ndlp->nlp_DID, vport->port_state,
4123 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb,
4129 spin_lock_irq(shost->host_lock);
4130 if (vport->fc_rscn_flush) {
4131 /* Another thread is walking fc_rscn_id_list on this vport */
4132 spin_unlock_irq(shost->host_lock);
4133 vport->fc_flag |= FC_RSCN_DISCOVERY;
4135 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
4138 /* Indicate we are walking fc_rscn_id_list on this vport */
4139 vport->fc_rscn_flush = 1;
4140 spin_unlock_irq(shost->host_lock);
4141 /* Get the array count after sucessfully have the token */
4142 rscn_cnt = vport->fc_rscn_id_cnt;
4143 /* If we are already processing an RSCN, save the received
4144 * RSCN payload buffer, cmdiocb->context2 to process later.
4146 if (vport->fc_flag & (FC_RSCN_MODE | FC_NDISC_ACTIVE)) {
4147 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
4148 "RCV RSCN defer: did:x%x/ste:x%x flg:x%x",
4149 ndlp->nlp_DID, vport->port_state, ndlp->nlp_flag);
4151 spin_lock_irq(shost->host_lock);
4152 vport->fc_flag |= FC_RSCN_DEFERRED;
4153 if ((rscn_cnt < FC_MAX_HOLD_RSCN) &&
4154 !(vport->fc_flag & FC_RSCN_DISCOVERY)) {
4155 vport->fc_flag |= FC_RSCN_MODE;
4156 spin_unlock_irq(shost->host_lock);
4158 cmd = vport->fc_rscn_id_list[rscn_cnt-1]->virt;
4159 length = be32_to_cpu(*cmd & ~ELS_CMD_MASK);
4162 (payload_len + length <= LPFC_BPL_SIZE)) {
4163 *cmd &= ELS_CMD_MASK;
4164 *cmd |= cpu_to_be32(payload_len + length);
4165 memcpy(((uint8_t *)cmd) + length, lp,
4168 vport->fc_rscn_id_list[rscn_cnt] = pcmd;
4169 vport->fc_rscn_id_cnt++;
4170 /* If we zero, cmdiocb->context2, the calling
4171 * routine will not try to free it.
4173 cmdiocb->context2 = NULL;
4176 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
4177 "0235 Deferred RSCN "
4178 "Data: x%x x%x x%x\n",
4179 vport->fc_rscn_id_cnt, vport->fc_flag,
4182 vport->fc_flag |= FC_RSCN_DISCOVERY;
4183 spin_unlock_irq(shost->host_lock);
4184 /* ReDiscovery RSCN */
4185 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
4186 "0234 ReDiscovery RSCN "
4187 "Data: x%x x%x x%x\n",
4188 vport->fc_rscn_id_cnt, vport->fc_flag,
4191 /* Indicate we are done walking fc_rscn_id_list on this vport */
4192 vport->fc_rscn_flush = 0;
4194 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
4195 /* send RECOVERY event for ALL nodes that match RSCN payload */
4196 lpfc_rscn_recovery_check(vport);
4197 spin_lock_irq(shost->host_lock);
4198 vport->fc_flag &= ~FC_RSCN_DEFERRED;
4199 spin_unlock_irq(shost->host_lock);
4202 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
4203 "RCV RSCN: did:x%x/ste:x%x flg:x%x",
4204 ndlp->nlp_DID, vport->port_state, ndlp->nlp_flag);
4206 spin_lock_irq(shost->host_lock);
4207 vport->fc_flag |= FC_RSCN_MODE;
4208 spin_unlock_irq(shost->host_lock);
4209 vport->fc_rscn_id_list[vport->fc_rscn_id_cnt++] = pcmd;
4210 /* Indicate we are done walking fc_rscn_id_list on this vport */
4211 vport->fc_rscn_flush = 0;
4213 * If we zero, cmdiocb->context2, the calling routine will
4214 * not try to free it.
4216 cmdiocb->context2 = NULL;
4217 lpfc_set_disctmo(vport);
4219 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
4220 /* send RECOVERY event for ALL nodes that match RSCN payload */
4221 lpfc_rscn_recovery_check(vport);
4222 return lpfc_els_handle_rscn(vport);
4226 * lpfc_els_handle_rscn - Handle rscn for a vport
4227 * @vport: pointer to a host virtual N_Port data structure.
4229 * This routine handles the Registration State Configuration Notification
4230 * (RSCN) for a @vport. If login to NameServer does not exist, a new ndlp shall
4231 * be created and a Port Login (PLOGI) to the NameServer is issued. Otherwise,
4232 * if the ndlp to NameServer exists, a Common Transport (CT) command to the
4233 * NameServer shall be issued. If CT command to the NameServer fails to be
4234 * issued, the lpfc_els_flush_rscn() routine shall be invoked to clean up any
4235 * RSCN activities with the @vport.
4238 * 0 - Cleaned up rscn on the @vport
4239 * 1 - Wait for plogi to name server before proceed
4242 lpfc_els_handle_rscn(struct lpfc_vport *vport)
4244 struct lpfc_nodelist *ndlp;
4245 struct lpfc_hba *phba = vport->phba;
4247 /* Ignore RSCN if the port is being torn down. */
4248 if (vport->load_flag & FC_UNLOADING) {
4249 lpfc_els_flush_rscn(vport);
4253 /* Start timer for RSCN processing */
4254 lpfc_set_disctmo(vport);
4256 /* RSCN processed */
4257 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
4258 "0215 RSCN processed Data: x%x x%x x%x x%x\n",
4259 vport->fc_flag, 0, vport->fc_rscn_id_cnt,
4262 /* To process RSCN, first compare RSCN data with NameServer */
4263 vport->fc_ns_retry = 0;
4264 vport->num_disc_nodes = 0;
4266 ndlp = lpfc_findnode_did(vport, NameServer_DID);
4267 if (ndlp && NLP_CHK_NODE_ACT(ndlp)
4268 && ndlp->nlp_state == NLP_STE_UNMAPPED_NODE) {
4269 /* Good ndlp, issue CT Request to NameServer */
4270 if (lpfc_ns_cmd(vport, SLI_CTNS_GID_FT, 0, 0) == 0)
4271 /* Wait for NameServer query cmpl before we can
4275 /* If login to NameServer does not exist, issue one */
4276 /* Good status, issue PLOGI to NameServer */
4277 ndlp = lpfc_findnode_did(vport, NameServer_DID);
4278 if (ndlp && NLP_CHK_NODE_ACT(ndlp))
4279 /* Wait for NameServer login cmpl before we can
4284 ndlp = lpfc_enable_node(vport, ndlp,
4285 NLP_STE_PLOGI_ISSUE);
4287 lpfc_els_flush_rscn(vport);
4290 ndlp->nlp_prev_state = NLP_STE_UNUSED_NODE;
4292 ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL);
4294 lpfc_els_flush_rscn(vport);
4297 lpfc_nlp_init(vport, ndlp, NameServer_DID);
4298 ndlp->nlp_prev_state = ndlp->nlp_state;
4299 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
4301 ndlp->nlp_type |= NLP_FABRIC;
4302 lpfc_issue_els_plogi(vport, NameServer_DID, 0);
4303 /* Wait for NameServer login cmpl before we can
4309 lpfc_els_flush_rscn(vport);
4314 * lpfc_els_rcv_flogi - Process an unsolicited flogi iocb
4315 * @vport: pointer to a host virtual N_Port data structure.
4316 * @cmdiocb: pointer to lpfc command iocb data structure.
4317 * @ndlp: pointer to a node-list data structure.
4319 * This routine processes Fabric Login (FLOGI) IOCB received as an ELS
4320 * unsolicited event. An unsolicited FLOGI can be received in a point-to-
4321 * point topology. As an unsolicited FLOGI should not be received in a loop
4322 * mode, any unsolicited FLOGI received in loop mode shall be ignored. The
4323 * lpfc_check_sparm() routine is invoked to check the parameters in the
4324 * unsolicited FLOGI. If parameters validation failed, the routine
4325 * lpfc_els_rsp_reject() shall be called with reject reason code set to
4326 * LSEXP_SPARM_OPTIONS to reject the FLOGI. Otherwise, the Port WWN in the
4327 * FLOGI shall be compared with the Port WWN of the @vport to determine who
4328 * will initiate PLOGI. The higher lexicographical value party shall has
4329 * higher priority (as the winning port) and will initiate PLOGI and
4330 * communicate Port_IDs (Addresses) for both nodes in PLOGI. The result
4331 * of this will be marked in the @vport fc_flag field with FC_PT2PT_PLOGI
4332 * and then the lpfc_els_rsp_acc() routine is invoked to accept the FLOGI.
4335 * 0 - Successfully processed the unsolicited flogi
4336 * 1 - Failed to process the unsolicited flogi
4339 lpfc_els_rcv_flogi(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
4340 struct lpfc_nodelist *ndlp)
4342 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4343 struct lpfc_hba *phba = vport->phba;
4344 struct lpfc_dmabuf *pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
4345 uint32_t *lp = (uint32_t *) pcmd->virt;
4346 IOCB_t *icmd = &cmdiocb->iocb;
4347 struct serv_parm *sp;
4354 sp = (struct serv_parm *) lp;
4356 /* FLOGI received */
4358 lpfc_set_disctmo(vport);
4360 if (phba->fc_topology == TOPOLOGY_LOOP) {
4361 /* We should never receive a FLOGI in loop mode, ignore it */
4362 did = icmd->un.elsreq64.remoteID;
4364 /* An FLOGI ELS command <elsCmd> was received from DID <did> in
4366 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
4367 "0113 An FLOGI ELS command x%x was "
4368 "received from DID x%x in Loop Mode\n",
4375 if ((lpfc_check_sparm(vport, ndlp, sp, CLASS3))) {
4376 /* For a FLOGI we accept, then if our portname is greater
4377 * then the remote portname we initiate Nport login.
4380 rc = memcmp(&vport->fc_portname, &sp->portName,
4381 sizeof(struct lpfc_name));
4384 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
4388 lpfc_linkdown(phba);
4389 lpfc_init_link(phba, mbox,
4391 phba->cfg_link_speed);
4392 mbox->u.mb.un.varInitLnk.lipsr_AL_PA = 0;
4393 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
4394 mbox->vport = vport;
4395 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
4396 lpfc_set_loopback_flag(phba);
4397 if (rc == MBX_NOT_FINISHED) {
4398 mempool_free(mbox, phba->mbox_mem_pool);
4401 } else if (rc > 0) { /* greater than */
4402 spin_lock_irq(shost->host_lock);
4403 vport->fc_flag |= FC_PT2PT_PLOGI;
4404 spin_unlock_irq(shost->host_lock);
4406 spin_lock_irq(shost->host_lock);
4407 vport->fc_flag |= FC_PT2PT;
4408 vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
4409 spin_unlock_irq(shost->host_lock);
4411 /* Reject this request because invalid parameters */
4412 stat.un.b.lsRjtRsvd0 = 0;
4413 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
4414 stat.un.b.lsRjtRsnCodeExp = LSEXP_SPARM_OPTIONS;
4415 stat.un.b.vendorUnique = 0;
4416 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
4422 lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb, ndlp, NULL);
4428 * lpfc_els_rcv_rnid - Process an unsolicited rnid iocb
4429 * @vport: pointer to a host virtual N_Port data structure.
4430 * @cmdiocb: pointer to lpfc command iocb data structure.
4431 * @ndlp: pointer to a node-list data structure.
4433 * This routine processes Request Node Identification Data (RNID) IOCB
4434 * received as an ELS unsolicited event. Only when the RNID specified format
4435 * 0x0 or 0xDF (Topology Discovery Specific Node Identification Data)
4436 * present, this routine will invoke the lpfc_els_rsp_rnid_acc() routine to
4437 * Accept (ACC) the RNID ELS command. All the other RNID formats are
4438 * rejected by invoking the lpfc_els_rsp_reject() routine.
4441 * 0 - Successfully processed rnid iocb (currently always return 0)
4444 lpfc_els_rcv_rnid(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
4445 struct lpfc_nodelist *ndlp)
4447 struct lpfc_dmabuf *pcmd;
4454 icmd = &cmdiocb->iocb;
4455 did = icmd->un.elsreq64.remoteID;
4456 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
4457 lp = (uint32_t *) pcmd->virt;
4464 switch (rn->Format) {
4466 case RNID_TOPOLOGY_DISC:
4468 lpfc_els_rsp_rnid_acc(vport, rn->Format, cmdiocb, ndlp);
4471 /* Reject this request because format not supported */
4472 stat.un.b.lsRjtRsvd0 = 0;
4473 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
4474 stat.un.b.lsRjtRsnCodeExp = LSEXP_CANT_GIVE_DATA;
4475 stat.un.b.vendorUnique = 0;
4476 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
4483 * lpfc_els_rcv_lirr - Process an unsolicited lirr iocb
4484 * @vport: pointer to a host virtual N_Port data structure.
4485 * @cmdiocb: pointer to lpfc command iocb data structure.
4486 * @ndlp: pointer to a node-list data structure.
4488 * This routine processes a Link Incident Report Registration(LIRR) IOCB
4489 * received as an ELS unsolicited event. Currently, this function just invokes
4490 * the lpfc_els_rsp_reject() routine to reject the LIRR IOCB unconditionally.
4493 * 0 - Successfully processed lirr iocb (currently always return 0)
4496 lpfc_els_rcv_lirr(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
4497 struct lpfc_nodelist *ndlp)
4501 /* For now, unconditionally reject this command */
4502 stat.un.b.lsRjtRsvd0 = 0;
4503 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
4504 stat.un.b.lsRjtRsnCodeExp = LSEXP_CANT_GIVE_DATA;
4505 stat.un.b.vendorUnique = 0;
4506 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
4511 * lpfc_els_rsp_rps_acc - Completion callbk func for MBX_READ_LNK_STAT mbox cmd
4512 * @phba: pointer to lpfc hba data structure.
4513 * @pmb: pointer to the driver internal queue element for mailbox command.
4515 * This routine is the completion callback function for the MBX_READ_LNK_STAT
4516 * mailbox command. This callback function is to actually send the Accept
4517 * (ACC) response to a Read Port Status (RPS) unsolicited IOCB event. It
4518 * collects the link statistics from the completion of the MBX_READ_LNK_STAT
4519 * mailbox command, constructs the RPS response with the link statistics
4520 * collected, and then invokes the lpfc_sli_issue_iocb() routine to send ACC
4521 * response to the RPS.
4523 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
4524 * will be incremented by 1 for holding the ndlp and the reference to ndlp
4525 * will be stored into the context1 field of the IOCB for the completion
4526 * callback function to the RPS Accept Response ELS IOCB command.
4530 lpfc_els_rsp_rps_acc(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
4536 struct lpfc_iocbq *elsiocb;
4537 struct lpfc_nodelist *ndlp;
4538 uint16_t xri, status;
4543 ndlp = (struct lpfc_nodelist *) pmb->context2;
4544 xri = (uint16_t) ((unsigned long)(pmb->context1));
4545 pmb->context1 = NULL;
4546 pmb->context2 = NULL;
4548 if (mb->mbxStatus) {
4549 mempool_free(pmb, phba->mbox_mem_pool);
4553 cmdsize = sizeof(RPS_RSP) + sizeof(uint32_t);
4554 mempool_free(pmb, phba->mbox_mem_pool);
4555 elsiocb = lpfc_prep_els_iocb(phba->pport, 0, cmdsize,
4556 lpfc_max_els_tries, ndlp,
4557 ndlp->nlp_DID, ELS_CMD_ACC);
4559 /* Decrement the ndlp reference count from previous mbox command */
4565 icmd = &elsiocb->iocb;
4566 icmd->ulpContext = xri;
4568 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
4569 *((uint32_t *) (pcmd)) = ELS_CMD_ACC;
4570 pcmd += sizeof(uint32_t); /* Skip past command */
4571 rps_rsp = (RPS_RSP *)pcmd;
4573 if (phba->fc_topology != TOPOLOGY_LOOP)
4577 if (phba->pport->fc_flag & FC_FABRIC)
4581 rps_rsp->portStatus = cpu_to_be16(status);
4582 rps_rsp->linkFailureCnt = cpu_to_be32(mb->un.varRdLnk.linkFailureCnt);
4583 rps_rsp->lossSyncCnt = cpu_to_be32(mb->un.varRdLnk.lossSyncCnt);
4584 rps_rsp->lossSignalCnt = cpu_to_be32(mb->un.varRdLnk.lossSignalCnt);
4585 rps_rsp->primSeqErrCnt = cpu_to_be32(mb->un.varRdLnk.primSeqErrCnt);
4586 rps_rsp->invalidXmitWord = cpu_to_be32(mb->un.varRdLnk.invalidXmitWord);
4587 rps_rsp->crcCnt = cpu_to_be32(mb->un.varRdLnk.crcCnt);
4588 /* Xmit ELS RPS ACC response tag <ulpIoTag> */
4589 lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_ELS,
4590 "0118 Xmit ELS RPS ACC response tag x%x xri x%x, "
4591 "did x%x, nlp_flag x%x, nlp_state x%x, rpi x%x\n",
4592 elsiocb->iotag, elsiocb->iocb.ulpContext,
4593 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
4595 elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp;
4596 phba->fc_stat.elsXmitACC++;
4597 if (lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0) == IOCB_ERROR)
4598 lpfc_els_free_iocb(phba, elsiocb);
4603 * lpfc_els_rcv_rps - Process an unsolicited rps iocb
4604 * @vport: pointer to a host virtual N_Port data structure.
4605 * @cmdiocb: pointer to lpfc command iocb data structure.
4606 * @ndlp: pointer to a node-list data structure.
4608 * This routine processes Read Port Status (RPS) IOCB received as an
4609 * ELS unsolicited event. It first checks the remote port state. If the
4610 * remote port is not in NLP_STE_UNMAPPED_NODE state or NLP_STE_MAPPED_NODE
4611 * state, it invokes the lpfc_els_rsp_reject() routine to send the reject
4612 * response. Otherwise, it issue the MBX_READ_LNK_STAT mailbox command
4613 * for reading the HBA link statistics. It is for the callback function,
4614 * lpfc_els_rsp_rps_acc(), set to the MBX_READ_LNK_STAT mailbox command
4615 * to actually sending out RPS Accept (ACC) response.
4618 * 0 - Successfully processed rps iocb (currently always return 0)
4621 lpfc_els_rcv_rps(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
4622 struct lpfc_nodelist *ndlp)
4624 struct lpfc_hba *phba = vport->phba;
4628 struct lpfc_dmabuf *pcmd;
4632 if ((ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) &&
4633 (ndlp->nlp_state != NLP_STE_MAPPED_NODE))
4634 /* reject the unsolicited RPS request and done with it */
4637 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
4638 lp = (uint32_t *) pcmd->virt;
4639 flag = (be32_to_cpu(*lp++) & 0xf);
4643 ((flag == 1) && (be32_to_cpu(rps->un.portNum) == 0)) ||
4644 ((flag == 2) && (memcmp(&rps->un.portName, &vport->fc_portname,
4645 sizeof(struct lpfc_name)) == 0))) {
4647 printk("Fix me....\n");
4649 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_ATOMIC);
4651 lpfc_read_lnk_stat(phba, mbox);
4653 (void *)((unsigned long) cmdiocb->iocb.ulpContext);
4654 mbox->context2 = lpfc_nlp_get(ndlp);
4655 mbox->vport = vport;
4656 mbox->mbox_cmpl = lpfc_els_rsp_rps_acc;
4657 if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT)
4658 != MBX_NOT_FINISHED)
4659 /* Mbox completion will send ELS Response */
4661 /* Decrement reference count used for the failed mbox
4665 mempool_free(mbox, phba->mbox_mem_pool);
4670 /* issue rejection response */
4671 stat.un.b.lsRjtRsvd0 = 0;
4672 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
4673 stat.un.b.lsRjtRsnCodeExp = LSEXP_CANT_GIVE_DATA;
4674 stat.un.b.vendorUnique = 0;
4675 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
4680 * lpfc_els_rsp_rpl_acc - Issue an accept rpl els command
4681 * @vport: pointer to a host virtual N_Port data structure.
4682 * @cmdsize: size of the ELS command.
4683 * @oldiocb: pointer to the original lpfc command iocb data structure.
4684 * @ndlp: pointer to a node-list data structure.
4686 * This routine issuees an Accept (ACC) Read Port List (RPL) ELS command.
4687 * It is to be called by the lpfc_els_rcv_rpl() routine to accept the RPL.
4689 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
4690 * will be incremented by 1 for holding the ndlp and the reference to ndlp
4691 * will be stored into the context1 field of the IOCB for the completion
4692 * callback function to the RPL Accept Response ELS command.
4695 * 0 - Successfully issued ACC RPL ELS command
4696 * 1 - Failed to issue ACC RPL ELS command
4699 lpfc_els_rsp_rpl_acc(struct lpfc_vport *vport, uint16_t cmdsize,
4700 struct lpfc_iocbq *oldiocb, struct lpfc_nodelist *ndlp)
4702 struct lpfc_hba *phba = vport->phba;
4703 IOCB_t *icmd, *oldcmd;
4705 struct lpfc_iocbq *elsiocb;
4708 elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp,
4709 ndlp->nlp_DID, ELS_CMD_ACC);
4714 icmd = &elsiocb->iocb;
4715 oldcmd = &oldiocb->iocb;
4716 icmd->ulpContext = oldcmd->ulpContext; /* Xri */
4718 pcmd = (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
4719 *((uint32_t *) (pcmd)) = ELS_CMD_ACC;
4720 pcmd += sizeof(uint16_t);
4721 *((uint16_t *)(pcmd)) = be16_to_cpu(cmdsize);
4722 pcmd += sizeof(uint16_t);
4724 /* Setup the RPL ACC payload */
4725 rpl_rsp.listLen = be32_to_cpu(1);
4727 rpl_rsp.port_num_blk.portNum = 0;
4728 rpl_rsp.port_num_blk.portID = be32_to_cpu(vport->fc_myDID);
4729 memcpy(&rpl_rsp.port_num_blk.portName, &vport->fc_portname,
4730 sizeof(struct lpfc_name));
4731 memcpy(pcmd, &rpl_rsp, cmdsize - sizeof(uint32_t));
4732 /* Xmit ELS RPL ACC response tag <ulpIoTag> */
4733 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
4734 "0120 Xmit ELS RPL ACC response tag x%x "
4735 "xri x%x, did x%x, nlp_flag x%x, nlp_state x%x, "
4737 elsiocb->iotag, elsiocb->iocb.ulpContext,
4738 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
4740 elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp;
4741 phba->fc_stat.elsXmitACC++;
4742 if (lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0) ==
4744 lpfc_els_free_iocb(phba, elsiocb);
4751 * lpfc_els_rcv_rpl - Process an unsolicited rpl iocb
4752 * @vport: pointer to a host virtual N_Port data structure.
4753 * @cmdiocb: pointer to lpfc command iocb data structure.
4754 * @ndlp: pointer to a node-list data structure.
4756 * This routine processes Read Port List (RPL) IOCB received as an ELS
4757 * unsolicited event. It first checks the remote port state. If the remote
4758 * port is not in NLP_STE_UNMAPPED_NODE and NLP_STE_MAPPED_NODE states, it
4759 * invokes the lpfc_els_rsp_reject() routine to send reject response.
4760 * Otherwise, this routine then invokes the lpfc_els_rsp_rpl_acc() routine
4761 * to accept the RPL.
4764 * 0 - Successfully processed rpl iocb (currently always return 0)
4767 lpfc_els_rcv_rpl(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
4768 struct lpfc_nodelist *ndlp)
4770 struct lpfc_dmabuf *pcmd;
4777 if ((ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) &&
4778 (ndlp->nlp_state != NLP_STE_MAPPED_NODE)) {
4779 /* issue rejection response */
4780 stat.un.b.lsRjtRsvd0 = 0;
4781 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
4782 stat.un.b.lsRjtRsnCodeExp = LSEXP_CANT_GIVE_DATA;
4783 stat.un.b.vendorUnique = 0;
4784 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
4786 /* rejected the unsolicited RPL request and done with it */
4790 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
4791 lp = (uint32_t *) pcmd->virt;
4792 rpl = (RPL *) (lp + 1);
4794 maxsize = be32_to_cpu(rpl->maxsize);
4796 /* We support only one port */
4797 if ((rpl->index == 0) &&
4799 ((maxsize * sizeof(uint32_t)) >= sizeof(RPL_RSP)))) {
4800 cmdsize = sizeof(uint32_t) + sizeof(RPL_RSP);
4802 cmdsize = sizeof(uint32_t) + maxsize * sizeof(uint32_t);
4804 lpfc_els_rsp_rpl_acc(vport, cmdsize, cmdiocb, ndlp);
4810 * lpfc_els_rcv_farp - Process an unsolicited farp request els command
4811 * @vport: pointer to a virtual N_Port data structure.
4812 * @cmdiocb: pointer to lpfc command iocb data structure.
4813 * @ndlp: pointer to a node-list data structure.
4815 * This routine processes Fibre Channel Address Resolution Protocol
4816 * (FARP) Request IOCB received as an ELS unsolicited event. Currently,
4817 * the lpfc driver only supports matching on WWPN or WWNN for FARP. As such,
4818 * FARP_MATCH_PORT flag and FARP_MATCH_NODE flag are checked against the
4819 * Match Flag in the FARP request IOCB: if FARP_MATCH_PORT flag is set, the
4820 * remote PortName is compared against the FC PortName stored in the @vport
4821 * data structure; if FARP_MATCH_NODE flag is set, the remote NodeName is
4822 * compared against the FC NodeName stored in the @vport data structure.
4823 * If any of these matches and the FARP_REQUEST_FARPR flag is set in the
4824 * FARP request IOCB Response Flag, the lpfc_issue_els_farpr() routine is
4825 * invoked to send out FARP Response to the remote node. Before sending the
4826 * FARP Response, however, the FARP_REQUEST_PLOGI flag is check in the FARP
4827 * request IOCB Response Flag and, if it is set, the lpfc_issue_els_plogi()
4828 * routine is invoked to log into the remote port first.
4831 * 0 - Either the FARP Match Mode not supported or successfully processed
4834 lpfc_els_rcv_farp(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
4835 struct lpfc_nodelist *ndlp)
4837 struct lpfc_dmabuf *pcmd;
4841 uint32_t cmd, cnt, did;
4843 icmd = &cmdiocb->iocb;
4844 did = icmd->un.elsreq64.remoteID;
4845 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
4846 lp = (uint32_t *) pcmd->virt;
4850 /* FARP-REQ received from DID <did> */
4851 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
4852 "0601 FARP-REQ received from DID x%x\n", did);
4853 /* We will only support match on WWPN or WWNN */
4854 if (fp->Mflags & ~(FARP_MATCH_NODE | FARP_MATCH_PORT)) {
4859 /* If this FARP command is searching for my portname */
4860 if (fp->Mflags & FARP_MATCH_PORT) {
4861 if (memcmp(&fp->RportName, &vport->fc_portname,
4862 sizeof(struct lpfc_name)) == 0)
4866 /* If this FARP command is searching for my nodename */
4867 if (fp->Mflags & FARP_MATCH_NODE) {
4868 if (memcmp(&fp->RnodeName, &vport->fc_nodename,
4869 sizeof(struct lpfc_name)) == 0)
4874 if ((ndlp->nlp_state == NLP_STE_UNMAPPED_NODE) ||
4875 (ndlp->nlp_state == NLP_STE_MAPPED_NODE)) {
4876 /* Log back into the node before sending the FARP. */
4877 if (fp->Rflags & FARP_REQUEST_PLOGI) {
4878 ndlp->nlp_prev_state = ndlp->nlp_state;
4879 lpfc_nlp_set_state(vport, ndlp,
4880 NLP_STE_PLOGI_ISSUE);
4881 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
4884 /* Send a FARP response to that node */
4885 if (fp->Rflags & FARP_REQUEST_FARPR)
4886 lpfc_issue_els_farpr(vport, did, 0);
4893 * lpfc_els_rcv_farpr - Process an unsolicited farp response iocb
4894 * @vport: pointer to a host virtual N_Port data structure.
4895 * @cmdiocb: pointer to lpfc command iocb data structure.
4896 * @ndlp: pointer to a node-list data structure.
4898 * This routine processes Fibre Channel Address Resolution Protocol
4899 * Response (FARPR) IOCB received as an ELS unsolicited event. It simply
4900 * invokes the lpfc_els_rsp_acc() routine to the remote node to accept
4901 * the FARP response request.
4904 * 0 - Successfully processed FARPR IOCB (currently always return 0)
4907 lpfc_els_rcv_farpr(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
4908 struct lpfc_nodelist *ndlp)
4910 struct lpfc_dmabuf *pcmd;
4915 icmd = &cmdiocb->iocb;
4916 did = icmd->un.elsreq64.remoteID;
4917 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
4918 lp = (uint32_t *) pcmd->virt;
4921 /* FARP-RSP received from DID <did> */
4922 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
4923 "0600 FARP-RSP received from DID x%x\n", did);
4924 /* ACCEPT the Farp resp request */
4925 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
4931 * lpfc_els_rcv_fan - Process an unsolicited fan iocb command
4932 * @vport: pointer to a host virtual N_Port data structure.
4933 * @cmdiocb: pointer to lpfc command iocb data structure.
4934 * @fan_ndlp: pointer to a node-list data structure.
4936 * This routine processes a Fabric Address Notification (FAN) IOCB
4937 * command received as an ELS unsolicited event. The FAN ELS command will
4938 * only be processed on a physical port (i.e., the @vport represents the
4939 * physical port). The fabric NodeName and PortName from the FAN IOCB are
4940 * compared against those in the phba data structure. If any of those is
4941 * different, the lpfc_initial_flogi() routine is invoked to initialize
4942 * Fabric Login (FLOGI) to the fabric to start the discover over. Otherwise,
4943 * if both of those are identical, the lpfc_issue_fabric_reglogin() routine
4944 * is invoked to register login to the fabric.
4947 * 0 - Successfully processed fan iocb (currently always return 0).
4950 lpfc_els_rcv_fan(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
4951 struct lpfc_nodelist *fan_ndlp)
4953 struct lpfc_hba *phba = vport->phba;
4957 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, "0265 FAN received\n");
4958 lp = (uint32_t *)((struct lpfc_dmabuf *)cmdiocb->context2)->virt;
4960 /* FAN received; Fan does not have a reply sequence */
4961 if ((vport == phba->pport) &&
4962 (vport->port_state == LPFC_LOCAL_CFG_LINK)) {
4963 if ((memcmp(&phba->fc_fabparam.nodeName, &fp->FnodeName,
4964 sizeof(struct lpfc_name))) ||
4965 (memcmp(&phba->fc_fabparam.portName, &fp->FportName,
4966 sizeof(struct lpfc_name)))) {
4967 /* This port has switched fabrics. FLOGI is required */
4968 lpfc_initial_flogi(vport);
4970 /* FAN verified - skip FLOGI */
4971 vport->fc_myDID = vport->fc_prevDID;
4972 if (phba->sli_rev < LPFC_SLI_REV4)
4973 lpfc_issue_fabric_reglogin(vport);
4975 lpfc_issue_reg_vfi(vport);
4982 * lpfc_els_timeout - Handler funciton to the els timer
4983 * @ptr: holder for the timer function associated data.
4985 * This routine is invoked by the ELS timer after timeout. It posts the ELS
4986 * timer timeout event by setting the WORKER_ELS_TMO bit to the work port
4987 * event bitmap and then invokes the lpfc_worker_wake_up() routine to wake
4988 * up the worker thread. It is for the worker thread to invoke the routine
4989 * lpfc_els_timeout_handler() to work on the posted event WORKER_ELS_TMO.
4992 lpfc_els_timeout(unsigned long ptr)
4994 struct lpfc_vport *vport = (struct lpfc_vport *) ptr;
4995 struct lpfc_hba *phba = vport->phba;
4996 uint32_t tmo_posted;
4997 unsigned long iflag;
4999 spin_lock_irqsave(&vport->work_port_lock, iflag);
5000 tmo_posted = vport->work_port_events & WORKER_ELS_TMO;
5002 vport->work_port_events |= WORKER_ELS_TMO;
5003 spin_unlock_irqrestore(&vport->work_port_lock, iflag);
5006 lpfc_worker_wake_up(phba);
5011 * lpfc_els_timeout_handler - Process an els timeout event
5012 * @vport: pointer to a virtual N_Port data structure.
5014 * This routine is the actual handler function that processes an ELS timeout
5015 * event. It walks the ELS ring to get and abort all the IOCBs (except the
5016 * ABORT/CLOSE/FARP/FARPR/FDISC), which are associated with the @vport by
5017 * invoking the lpfc_sli_issue_abort_iotag() routine.
5020 lpfc_els_timeout_handler(struct lpfc_vport *vport)
5022 struct lpfc_hba *phba = vport->phba;
5023 struct lpfc_sli_ring *pring;
5024 struct lpfc_iocbq *tmp_iocb, *piocb;
5026 struct lpfc_dmabuf *pcmd;
5027 uint32_t els_command = 0;
5029 uint32_t remote_ID = 0xffffffff;
5031 spin_lock_irq(&phba->hbalock);
5032 timeout = (uint32_t)(phba->fc_ratov << 1);
5034 pring = &phba->sli.ring[LPFC_ELS_RING];
5036 list_for_each_entry_safe(piocb, tmp_iocb, &pring->txcmplq, list) {
5039 if ((piocb->iocb_flag & LPFC_IO_LIBDFC) != 0 ||
5040 piocb->iocb.ulpCommand == CMD_ABORT_XRI_CN ||
5041 piocb->iocb.ulpCommand == CMD_CLOSE_XRI_CN)
5044 if (piocb->vport != vport)
5047 pcmd = (struct lpfc_dmabuf *) piocb->context2;
5049 els_command = *(uint32_t *) (pcmd->virt);
5051 if (els_command == ELS_CMD_FARP ||
5052 els_command == ELS_CMD_FARPR ||
5053 els_command == ELS_CMD_FDISC)
5056 if (piocb->drvrTimeout > 0) {
5057 if (piocb->drvrTimeout >= timeout)
5058 piocb->drvrTimeout -= timeout;
5060 piocb->drvrTimeout = 0;
5064 remote_ID = 0xffffffff;
5065 if (cmd->ulpCommand != CMD_GEN_REQUEST64_CR)
5066 remote_ID = cmd->un.elsreq64.remoteID;
5068 struct lpfc_nodelist *ndlp;
5069 ndlp = __lpfc_findnode_rpi(vport, cmd->ulpContext);
5070 if (ndlp && NLP_CHK_NODE_ACT(ndlp))
5071 remote_ID = ndlp->nlp_DID;
5073 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
5074 "0127 ELS timeout Data: x%x x%x x%x "
5075 "x%x\n", els_command,
5076 remote_ID, cmd->ulpCommand, cmd->ulpIoTag);
5077 lpfc_sli_issue_abort_iotag(phba, pring, piocb);
5079 spin_unlock_irq(&phba->hbalock);
5081 if (phba->sli.ring[LPFC_ELS_RING].txcmplq_cnt)
5082 mod_timer(&vport->els_tmofunc, jiffies + HZ * timeout);
5086 * lpfc_els_flush_cmd - Clean up the outstanding els commands to a vport
5087 * @vport: pointer to a host virtual N_Port data structure.
5089 * This routine is used to clean up all the outstanding ELS commands on a
5090 * @vport. It first aborts the @vport by invoking lpfc_fabric_abort_vport()
5091 * routine. After that, it walks the ELS transmit queue to remove all the
5092 * IOCBs with the @vport other than the QUE_RING and ABORT/CLOSE IOCBs. For
5093 * the IOCBs with a non-NULL completion callback function, the callback
5094 * function will be invoked with the status set to IOSTAT_LOCAL_REJECT and
5095 * un.ulpWord[4] set to IOERR_SLI_ABORTED. For IOCBs with a NULL completion
5096 * callback function, the IOCB will simply be released. Finally, it walks
5097 * the ELS transmit completion queue to issue an abort IOCB to any transmit
5098 * completion queue IOCB that is associated with the @vport and is not
5099 * an IOCB from libdfc (i.e., the management plane IOCBs that are not
5100 * part of the discovery state machine) out to HBA by invoking the
5101 * lpfc_sli_issue_abort_iotag() routine. Note that this function issues the
5102 * abort IOCB to any transmit completion queueed IOCB, it does not guarantee
5103 * the IOCBs are aborted when this function returns.
5106 lpfc_els_flush_cmd(struct lpfc_vport *vport)
5108 LIST_HEAD(completions);
5109 struct lpfc_hba *phba = vport->phba;
5110 struct lpfc_sli_ring *pring = &phba->sli.ring[LPFC_ELS_RING];
5111 struct lpfc_iocbq *tmp_iocb, *piocb;
5114 lpfc_fabric_abort_vport(vport);
5116 spin_lock_irq(&phba->hbalock);
5117 list_for_each_entry_safe(piocb, tmp_iocb, &pring->txq, list) {
5120 if (piocb->iocb_flag & LPFC_IO_LIBDFC) {
5124 /* Do not flush out the QUE_RING and ABORT/CLOSE iocbs */
5125 if (cmd->ulpCommand == CMD_QUE_RING_BUF_CN ||
5126 cmd->ulpCommand == CMD_QUE_RING_BUF64_CN ||
5127 cmd->ulpCommand == CMD_CLOSE_XRI_CN ||
5128 cmd->ulpCommand == CMD_ABORT_XRI_CN)
5131 if (piocb->vport != vport)
5134 list_move_tail(&piocb->list, &completions);
5138 list_for_each_entry_safe(piocb, tmp_iocb, &pring->txcmplq, list) {
5139 if (piocb->iocb_flag & LPFC_IO_LIBDFC) {
5143 if (piocb->vport != vport)
5146 lpfc_sli_issue_abort_iotag(phba, pring, piocb);
5148 spin_unlock_irq(&phba->hbalock);
5150 /* Cancell all the IOCBs from the completions list */
5151 lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
5158 * lpfc_els_flush_all_cmd - Clean up all the outstanding els commands to a HBA
5159 * @phba: pointer to lpfc hba data structure.
5161 * This routine is used to clean up all the outstanding ELS commands on a
5162 * @phba. It first aborts the @phba by invoking the lpfc_fabric_abort_hba()
5163 * routine. After that, it walks the ELS transmit queue to remove all the
5164 * IOCBs to the @phba other than the QUE_RING and ABORT/CLOSE IOCBs. For
5165 * the IOCBs with the completion callback function associated, the callback
5166 * function will be invoked with the status set to IOSTAT_LOCAL_REJECT and
5167 * un.ulpWord[4] set to IOERR_SLI_ABORTED. For IOCBs without the completion
5168 * callback function associated, the IOCB will simply be released. Finally,
5169 * it walks the ELS transmit completion queue to issue an abort IOCB to any
5170 * transmit completion queue IOCB that is not an IOCB from libdfc (i.e., the
5171 * management plane IOCBs that are not part of the discovery state machine)
5172 * out to HBA by invoking the lpfc_sli_issue_abort_iotag() routine.
5175 lpfc_els_flush_all_cmd(struct lpfc_hba *phba)
5177 LIST_HEAD(completions);
5178 struct lpfc_sli_ring *pring = &phba->sli.ring[LPFC_ELS_RING];
5179 struct lpfc_iocbq *tmp_iocb, *piocb;
5182 lpfc_fabric_abort_hba(phba);
5183 spin_lock_irq(&phba->hbalock);
5184 list_for_each_entry_safe(piocb, tmp_iocb, &pring->txq, list) {
5186 if (piocb->iocb_flag & LPFC_IO_LIBDFC)
5188 /* Do not flush out the QUE_RING and ABORT/CLOSE iocbs */
5189 if (cmd->ulpCommand == CMD_QUE_RING_BUF_CN ||
5190 cmd->ulpCommand == CMD_QUE_RING_BUF64_CN ||
5191 cmd->ulpCommand == CMD_CLOSE_XRI_CN ||
5192 cmd->ulpCommand == CMD_ABORT_XRI_CN)
5194 list_move_tail(&piocb->list, &completions);
5197 list_for_each_entry_safe(piocb, tmp_iocb, &pring->txcmplq, list) {
5198 if (piocb->iocb_flag & LPFC_IO_LIBDFC)
5200 lpfc_sli_issue_abort_iotag(phba, pring, piocb);
5202 spin_unlock_irq(&phba->hbalock);
5204 /* Cancel all the IOCBs from the completions list */
5205 lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
5212 * lpfc_send_els_failure_event - Posts an ELS command failure event
5213 * @phba: Pointer to hba context object.
5214 * @cmdiocbp: Pointer to command iocb which reported error.
5215 * @rspiocbp: Pointer to response iocb which reported error.
5217 * This function sends an event when there is an ELS command
5221 lpfc_send_els_failure_event(struct lpfc_hba *phba,
5222 struct lpfc_iocbq *cmdiocbp,
5223 struct lpfc_iocbq *rspiocbp)
5225 struct lpfc_vport *vport = cmdiocbp->vport;
5226 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
5227 struct lpfc_lsrjt_event lsrjt_event;
5228 struct lpfc_fabric_event_header fabric_event;
5230 struct lpfc_nodelist *ndlp;
5233 ndlp = cmdiocbp->context1;
5234 if (!ndlp || !NLP_CHK_NODE_ACT(ndlp))
5237 if (rspiocbp->iocb.ulpStatus == IOSTAT_LS_RJT) {
5238 lsrjt_event.header.event_type = FC_REG_ELS_EVENT;
5239 lsrjt_event.header.subcategory = LPFC_EVENT_LSRJT_RCV;
5240 memcpy(lsrjt_event.header.wwpn, &ndlp->nlp_portname,
5241 sizeof(struct lpfc_name));
5242 memcpy(lsrjt_event.header.wwnn, &ndlp->nlp_nodename,
5243 sizeof(struct lpfc_name));
5244 pcmd = (uint32_t *) (((struct lpfc_dmabuf *)
5245 cmdiocbp->context2)->virt);
5246 lsrjt_event.command = *pcmd;
5247 stat.un.lsRjtError = be32_to_cpu(rspiocbp->iocb.un.ulpWord[4]);
5248 lsrjt_event.reason_code = stat.un.b.lsRjtRsnCode;
5249 lsrjt_event.explanation = stat.un.b.lsRjtRsnCodeExp;
5250 fc_host_post_vendor_event(shost,
5251 fc_get_event_number(),
5252 sizeof(lsrjt_event),
5253 (char *)&lsrjt_event,
5257 if ((rspiocbp->iocb.ulpStatus == IOSTAT_NPORT_BSY) ||
5258 (rspiocbp->iocb.ulpStatus == IOSTAT_FABRIC_BSY)) {
5259 fabric_event.event_type = FC_REG_FABRIC_EVENT;
5260 if (rspiocbp->iocb.ulpStatus == IOSTAT_NPORT_BSY)
5261 fabric_event.subcategory = LPFC_EVENT_PORT_BUSY;
5263 fabric_event.subcategory = LPFC_EVENT_FABRIC_BUSY;
5264 memcpy(fabric_event.wwpn, &ndlp->nlp_portname,
5265 sizeof(struct lpfc_name));
5266 memcpy(fabric_event.wwnn, &ndlp->nlp_nodename,
5267 sizeof(struct lpfc_name));
5268 fc_host_post_vendor_event(shost,
5269 fc_get_event_number(),
5270 sizeof(fabric_event),
5271 (char *)&fabric_event,
5279 * lpfc_send_els_event - Posts unsolicited els event
5280 * @vport: Pointer to vport object.
5281 * @ndlp: Pointer FC node object.
5282 * @cmd: ELS command code.
5284 * This function posts an event when there is an incoming
5285 * unsolicited ELS command.
5288 lpfc_send_els_event(struct lpfc_vport *vport,
5289 struct lpfc_nodelist *ndlp,
5292 struct lpfc_els_event_header *els_data = NULL;
5293 struct lpfc_logo_event *logo_data = NULL;
5294 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
5296 if (*payload == ELS_CMD_LOGO) {
5297 logo_data = kmalloc(sizeof(struct lpfc_logo_event), GFP_KERNEL);
5299 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
5300 "0148 Failed to allocate memory "
5301 "for LOGO event\n");
5304 els_data = &logo_data->header;
5306 els_data = kmalloc(sizeof(struct lpfc_els_event_header),
5309 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
5310 "0149 Failed to allocate memory "
5315 els_data->event_type = FC_REG_ELS_EVENT;
5318 els_data->subcategory = LPFC_EVENT_PLOGI_RCV;
5321 els_data->subcategory = LPFC_EVENT_PRLO_RCV;
5324 els_data->subcategory = LPFC_EVENT_ADISC_RCV;
5327 els_data->subcategory = LPFC_EVENT_LOGO_RCV;
5328 /* Copy the WWPN in the LOGO payload */
5329 memcpy(logo_data->logo_wwpn, &payload[2],
5330 sizeof(struct lpfc_name));
5336 memcpy(els_data->wwpn, &ndlp->nlp_portname, sizeof(struct lpfc_name));
5337 memcpy(els_data->wwnn, &ndlp->nlp_nodename, sizeof(struct lpfc_name));
5338 if (*payload == ELS_CMD_LOGO) {
5339 fc_host_post_vendor_event(shost,
5340 fc_get_event_number(),
5341 sizeof(struct lpfc_logo_event),
5346 fc_host_post_vendor_event(shost,
5347 fc_get_event_number(),
5348 sizeof(struct lpfc_els_event_header),
5359 * lpfc_els_unsol_buffer - Process an unsolicited event data buffer
5360 * @phba: pointer to lpfc hba data structure.
5361 * @pring: pointer to a SLI ring.
5362 * @vport: pointer to a host virtual N_Port data structure.
5363 * @elsiocb: pointer to lpfc els command iocb data structure.
5365 * This routine is used for processing the IOCB associated with a unsolicited
5366 * event. It first determines whether there is an existing ndlp that matches
5367 * the DID from the unsolicited IOCB. If not, it will create a new one with
5368 * the DID from the unsolicited IOCB. The ELS command from the unsolicited
5369 * IOCB is then used to invoke the proper routine and to set up proper state
5370 * of the discovery state machine.
5373 lpfc_els_unsol_buffer(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
5374 struct lpfc_vport *vport, struct lpfc_iocbq *elsiocb)
5376 struct Scsi_Host *shost;
5377 struct lpfc_nodelist *ndlp;
5380 uint32_t cmd, did, newnode, rjt_err = 0;
5381 IOCB_t *icmd = &elsiocb->iocb;
5383 if (!vport || !(elsiocb->context2))
5387 payload = ((struct lpfc_dmabuf *)elsiocb->context2)->virt;
5389 if ((phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) == 0)
5390 lpfc_post_buffer(phba, pring, 1);
5392 did = icmd->un.rcvels.remoteID;
5393 if (icmd->ulpStatus) {
5394 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
5395 "RCV Unsol ELS: status:x%x/x%x did:x%x",
5396 icmd->ulpStatus, icmd->un.ulpWord[4], did);
5400 /* Check to see if link went down during discovery */
5401 if (lpfc_els_chk_latt(vport))
5404 /* Ignore traffic recevied during vport shutdown. */
5405 if (vport->load_flag & FC_UNLOADING)
5408 ndlp = lpfc_findnode_did(vport, did);
5410 /* Cannot find existing Fabric ndlp, so allocate a new one */
5411 ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL);
5415 lpfc_nlp_init(vport, ndlp, did);
5416 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
5418 if ((did & Fabric_DID_MASK) == Fabric_DID_MASK)
5419 ndlp->nlp_type |= NLP_FABRIC;
5420 } else if (!NLP_CHK_NODE_ACT(ndlp)) {
5421 ndlp = lpfc_enable_node(vport, ndlp,
5422 NLP_STE_UNUSED_NODE);
5425 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
5427 if ((did & Fabric_DID_MASK) == Fabric_DID_MASK)
5428 ndlp->nlp_type |= NLP_FABRIC;
5429 } else if (ndlp->nlp_state == NLP_STE_UNUSED_NODE) {
5430 /* This is similar to the new node path */
5431 ndlp = lpfc_nlp_get(ndlp);
5434 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
5438 phba->fc_stat.elsRcvFrame++;
5440 elsiocb->context1 = lpfc_nlp_get(ndlp);
5441 elsiocb->vport = vport;
5443 if ((cmd & ELS_CMD_MASK) == ELS_CMD_RSCN) {
5444 cmd &= ELS_CMD_MASK;
5446 /* ELS command <elsCmd> received from NPORT <did> */
5447 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
5448 "0112 ELS command x%x received from NPORT x%x "
5449 "Data: x%x\n", cmd, did, vport->port_state);
5452 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
5453 "RCV PLOGI: did:x%x/ste:x%x flg:x%x",
5454 did, vport->port_state, ndlp->nlp_flag);
5456 phba->fc_stat.elsRcvPLOGI++;
5457 ndlp = lpfc_plogi_confirm_nport(phba, payload, ndlp);
5459 lpfc_send_els_event(vport, ndlp, payload);
5460 if (vport->port_state < LPFC_DISC_AUTH) {
5461 if (!(phba->pport->fc_flag & FC_PT2PT) ||
5462 (phba->pport->fc_flag & FC_PT2PT_PLOGI)) {
5463 rjt_err = LSRJT_UNABLE_TPC;
5466 /* We get here, and drop thru, if we are PT2PT with
5467 * another NPort and the other side has initiated
5468 * the PLOGI before responding to our FLOGI.
5472 shost = lpfc_shost_from_vport(vport);
5473 spin_lock_irq(shost->host_lock);
5474 ndlp->nlp_flag &= ~NLP_TARGET_REMOVE;
5475 spin_unlock_irq(shost->host_lock);
5477 lpfc_disc_state_machine(vport, ndlp, elsiocb,
5482 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
5483 "RCV FLOGI: did:x%x/ste:x%x flg:x%x",
5484 did, vport->port_state, ndlp->nlp_flag);
5486 phba->fc_stat.elsRcvFLOGI++;
5487 lpfc_els_rcv_flogi(vport, elsiocb, ndlp);
5492 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
5493 "RCV LOGO: did:x%x/ste:x%x flg:x%x",
5494 did, vport->port_state, ndlp->nlp_flag);
5496 phba->fc_stat.elsRcvLOGO++;
5497 lpfc_send_els_event(vport, ndlp, payload);
5498 if (vport->port_state < LPFC_DISC_AUTH) {
5499 rjt_err = LSRJT_UNABLE_TPC;
5502 lpfc_disc_state_machine(vport, ndlp, elsiocb, NLP_EVT_RCV_LOGO);
5505 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
5506 "RCV PRLO: did:x%x/ste:x%x flg:x%x",
5507 did, vport->port_state, ndlp->nlp_flag);
5509 phba->fc_stat.elsRcvPRLO++;
5510 lpfc_send_els_event(vport, ndlp, payload);
5511 if (vport->port_state < LPFC_DISC_AUTH) {
5512 rjt_err = LSRJT_UNABLE_TPC;
5515 lpfc_disc_state_machine(vport, ndlp, elsiocb, NLP_EVT_RCV_PRLO);
5518 phba->fc_stat.elsRcvRSCN++;
5519 lpfc_els_rcv_rscn(vport, elsiocb, ndlp);
5524 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
5525 "RCV ADISC: did:x%x/ste:x%x flg:x%x",
5526 did, vport->port_state, ndlp->nlp_flag);
5528 lpfc_send_els_event(vport, ndlp, payload);
5529 phba->fc_stat.elsRcvADISC++;
5530 if (vport->port_state < LPFC_DISC_AUTH) {
5531 rjt_err = LSRJT_UNABLE_TPC;
5534 lpfc_disc_state_machine(vport, ndlp, elsiocb,
5538 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
5539 "RCV PDISC: did:x%x/ste:x%x flg:x%x",
5540 did, vport->port_state, ndlp->nlp_flag);
5542 phba->fc_stat.elsRcvPDISC++;
5543 if (vport->port_state < LPFC_DISC_AUTH) {
5544 rjt_err = LSRJT_UNABLE_TPC;
5547 lpfc_disc_state_machine(vport, ndlp, elsiocb,
5551 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
5552 "RCV FARPR: did:x%x/ste:x%x flg:x%x",
5553 did, vport->port_state, ndlp->nlp_flag);
5555 phba->fc_stat.elsRcvFARPR++;
5556 lpfc_els_rcv_farpr(vport, elsiocb, ndlp);
5559 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
5560 "RCV FARP: did:x%x/ste:x%x flg:x%x",
5561 did, vport->port_state, ndlp->nlp_flag);
5563 phba->fc_stat.elsRcvFARP++;
5564 lpfc_els_rcv_farp(vport, elsiocb, ndlp);
5567 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
5568 "RCV FAN: did:x%x/ste:x%x flg:x%x",
5569 did, vport->port_state, ndlp->nlp_flag);
5571 phba->fc_stat.elsRcvFAN++;
5572 lpfc_els_rcv_fan(vport, elsiocb, ndlp);
5575 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
5576 "RCV PRLI: did:x%x/ste:x%x flg:x%x",
5577 did, vport->port_state, ndlp->nlp_flag);
5579 phba->fc_stat.elsRcvPRLI++;
5580 if (vport->port_state < LPFC_DISC_AUTH) {
5581 rjt_err = LSRJT_UNABLE_TPC;
5584 lpfc_disc_state_machine(vport, ndlp, elsiocb, NLP_EVT_RCV_PRLI);
5587 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
5588 "RCV LIRR: did:x%x/ste:x%x flg:x%x",
5589 did, vport->port_state, ndlp->nlp_flag);
5591 phba->fc_stat.elsRcvLIRR++;
5592 lpfc_els_rcv_lirr(vport, elsiocb, ndlp);
5597 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
5598 "RCV RPS: did:x%x/ste:x%x flg:x%x",
5599 did, vport->port_state, ndlp->nlp_flag);
5601 phba->fc_stat.elsRcvRPS++;
5602 lpfc_els_rcv_rps(vport, elsiocb, ndlp);
5607 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
5608 "RCV RPL: did:x%x/ste:x%x flg:x%x",
5609 did, vport->port_state, ndlp->nlp_flag);
5611 phba->fc_stat.elsRcvRPL++;
5612 lpfc_els_rcv_rpl(vport, elsiocb, ndlp);
5617 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
5618 "RCV RNID: did:x%x/ste:x%x flg:x%x",
5619 did, vport->port_state, ndlp->nlp_flag);
5621 phba->fc_stat.elsRcvRNID++;
5622 lpfc_els_rcv_rnid(vport, elsiocb, ndlp);
5627 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
5628 "RCV ELS cmd: cmd:x%x did:x%x/ste:x%x",
5629 cmd, did, vport->port_state);
5631 /* Unsupported ELS command, reject */
5632 rjt_err = LSRJT_INVALID_CMD;
5634 /* Unknown ELS command <elsCmd> received from NPORT <did> */
5635 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
5636 "0115 Unknown ELS command x%x "
5637 "received from NPORT x%x\n", cmd, did);
5643 /* check if need to LS_RJT received ELS cmd */
5645 memset(&stat, 0, sizeof(stat));
5646 stat.un.b.lsRjtRsnCode = rjt_err;
5647 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
5648 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, elsiocb, ndlp,
5652 lpfc_nlp_put(elsiocb->context1);
5653 elsiocb->context1 = NULL;
5657 if (vport && !(vport->load_flag & FC_UNLOADING))
5658 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
5659 "0111 Dropping received ELS cmd "
5660 "Data: x%x x%x x%x\n",
5661 icmd->ulpStatus, icmd->un.ulpWord[4], icmd->ulpTimeout);
5662 phba->fc_stat.elsRcvDrop++;
5666 * lpfc_find_vport_by_vpid - Find a vport on a HBA through vport identifier
5667 * @phba: pointer to lpfc hba data structure.
5668 * @vpi: host virtual N_Port identifier.
5670 * This routine finds a vport on a HBA (referred by @phba) through a
5671 * @vpi. The function walks the HBA's vport list and returns the address
5672 * of the vport with the matching @vpi.
5675 * NULL - No vport with the matching @vpi found
5676 * Otherwise - Address to the vport with the matching @vpi.
5679 lpfc_find_vport_by_vpid(struct lpfc_hba *phba, uint16_t vpi)
5681 struct lpfc_vport *vport;
5682 unsigned long flags;
5684 spin_lock_irqsave(&phba->hbalock, flags);
5685 list_for_each_entry(vport, &phba->port_list, listentry) {
5686 if (vport->vpi == vpi) {
5687 spin_unlock_irqrestore(&phba->hbalock, flags);
5691 spin_unlock_irqrestore(&phba->hbalock, flags);
5696 * lpfc_els_unsol_event - Process an unsolicited event from an els sli ring
5697 * @phba: pointer to lpfc hba data structure.
5698 * @pring: pointer to a SLI ring.
5699 * @elsiocb: pointer to lpfc els iocb data structure.
5701 * This routine is used to process an unsolicited event received from a SLI
5702 * (Service Level Interface) ring. The actual processing of the data buffer
5703 * associated with the unsolicited event is done by invoking the routine
5704 * lpfc_els_unsol_buffer() after properly set up the iocb buffer from the
5705 * SLI ring on which the unsolicited event was received.
5708 lpfc_els_unsol_event(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
5709 struct lpfc_iocbq *elsiocb)
5711 struct lpfc_vport *vport = phba->pport;
5712 IOCB_t *icmd = &elsiocb->iocb;
5714 struct lpfc_dmabuf *bdeBuf1 = elsiocb->context2;
5715 struct lpfc_dmabuf *bdeBuf2 = elsiocb->context3;
5717 elsiocb->context1 = NULL;
5718 elsiocb->context2 = NULL;
5719 elsiocb->context3 = NULL;
5721 if (icmd->ulpStatus == IOSTAT_NEED_BUFFER) {
5722 lpfc_sli_hbqbuf_add_hbqs(phba, LPFC_ELS_HBQ);
5723 } else if (icmd->ulpStatus == IOSTAT_LOCAL_REJECT &&
5724 (icmd->un.ulpWord[4] & 0xff) == IOERR_RCV_BUFFER_WAITING) {
5725 phba->fc_stat.NoRcvBuf++;
5726 /* Not enough posted buffers; Try posting more buffers */
5727 if (!(phba->sli3_options & LPFC_SLI3_HBQ_ENABLED))
5728 lpfc_post_buffer(phba, pring, 0);
5732 if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
5733 (icmd->ulpCommand == CMD_IOCB_RCV_ELS64_CX ||
5734 icmd->ulpCommand == CMD_IOCB_RCV_SEQ64_CX)) {
5735 if (icmd->unsli3.rcvsli3.vpi == 0xffff)
5736 vport = phba->pport;
5738 vport = lpfc_find_vport_by_vpid(phba,
5739 icmd->unsli3.rcvsli3.vpi - phba->vpi_base);
5741 /* If there are no BDEs associated
5742 * with this IOCB, there is nothing to do.
5744 if (icmd->ulpBdeCount == 0)
5747 /* type of ELS cmd is first 32bit word
5750 if (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) {
5751 elsiocb->context2 = bdeBuf1;
5753 paddr = getPaddr(icmd->un.cont64[0].addrHigh,
5754 icmd->un.cont64[0].addrLow);
5755 elsiocb->context2 = lpfc_sli_ringpostbuf_get(phba, pring,
5759 lpfc_els_unsol_buffer(phba, pring, vport, elsiocb);
5761 * The different unsolicited event handlers would tell us
5762 * if they are done with "mp" by setting context2 to NULL.
5764 if (elsiocb->context2) {
5765 lpfc_in_buf_free(phba, (struct lpfc_dmabuf *)elsiocb->context2);
5766 elsiocb->context2 = NULL;
5769 /* RCV_ELS64_CX provide for 2 BDEs - process 2nd if included */
5770 if ((phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) &&
5771 icmd->ulpBdeCount == 2) {
5772 elsiocb->context2 = bdeBuf2;
5773 lpfc_els_unsol_buffer(phba, pring, vport, elsiocb);
5774 /* free mp if we are done with it */
5775 if (elsiocb->context2) {
5776 lpfc_in_buf_free(phba, elsiocb->context2);
5777 elsiocb->context2 = NULL;
5783 * lpfc_do_scr_ns_plogi - Issue a plogi to the name server for scr
5784 * @phba: pointer to lpfc hba data structure.
5785 * @vport: pointer to a virtual N_Port data structure.
5787 * This routine issues a Port Login (PLOGI) to the Name Server with
5788 * State Change Request (SCR) for a @vport. This routine will create an
5789 * ndlp for the Name Server associated to the @vport if such node does
5790 * not already exist. The PLOGI to Name Server is issued by invoking the
5791 * lpfc_issue_els_plogi() routine. If Fabric-Device Management Interface
5792 * (FDMI) is configured to the @vport, a FDMI node will be created and
5793 * the PLOGI to FDMI is issued by invoking lpfc_issue_els_plogi() routine.
5796 lpfc_do_scr_ns_plogi(struct lpfc_hba *phba, struct lpfc_vport *vport)
5798 struct lpfc_nodelist *ndlp, *ndlp_fdmi;
5800 ndlp = lpfc_findnode_did(vport, NameServer_DID);
5802 ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL);
5804 if (phba->fc_topology == TOPOLOGY_LOOP) {
5805 lpfc_disc_start(vport);
5808 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
5809 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
5810 "0251 NameServer login: no memory\n");
5813 lpfc_nlp_init(vport, ndlp, NameServer_DID);
5814 } else if (!NLP_CHK_NODE_ACT(ndlp)) {
5815 ndlp = lpfc_enable_node(vport, ndlp, NLP_STE_UNUSED_NODE);
5817 if (phba->fc_topology == TOPOLOGY_LOOP) {
5818 lpfc_disc_start(vport);
5821 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
5822 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
5823 "0348 NameServer login: node freed\n");
5827 ndlp->nlp_type |= NLP_FABRIC;
5829 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
5831 if (lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0)) {
5832 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
5833 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
5834 "0252 Cannot issue NameServer login\n");
5838 if (vport->cfg_fdmi_on) {
5839 ndlp_fdmi = mempool_alloc(phba->nlp_mem_pool,
5842 lpfc_nlp_init(vport, ndlp_fdmi, FDMI_DID);
5843 ndlp_fdmi->nlp_type |= NLP_FABRIC;
5844 lpfc_nlp_set_state(vport, ndlp_fdmi,
5845 NLP_STE_PLOGI_ISSUE);
5846 lpfc_issue_els_plogi(vport, ndlp_fdmi->nlp_DID,
5854 * lpfc_cmpl_reg_new_vport - Completion callback function to register new vport
5855 * @phba: pointer to lpfc hba data structure.
5856 * @pmb: pointer to the driver internal queue element for mailbox command.
5858 * This routine is the completion callback function to register new vport
5859 * mailbox command. If the new vport mailbox command completes successfully,
5860 * the fabric registration login shall be performed on physical port (the
5861 * new vport created is actually a physical port, with VPI 0) or the port
5862 * login to Name Server for State Change Request (SCR) will be performed
5863 * on virtual port (real virtual port, with VPI greater than 0).
5866 lpfc_cmpl_reg_new_vport(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
5868 struct lpfc_vport *vport = pmb->vport;
5869 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
5870 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2;
5871 MAILBOX_t *mb = &pmb->u.mb;
5873 spin_lock_irq(shost->host_lock);
5874 vport->fc_flag &= ~FC_VPORT_NEEDS_REG_VPI;
5875 spin_unlock_irq(shost->host_lock);
5877 if (mb->mbxStatus) {
5878 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
5879 "0915 Register VPI failed: 0x%x\n",
5882 switch (mb->mbxStatus) {
5883 case 0x11: /* unsupported feature */
5884 case 0x9603: /* max_vpi exceeded */
5885 case 0x9602: /* Link event since CLEAR_LA */
5886 /* giving up on vport registration */
5887 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
5888 spin_lock_irq(shost->host_lock);
5889 vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
5890 spin_unlock_irq(shost->host_lock);
5891 lpfc_can_disctmo(vport);
5894 /* Try to recover from this error */
5895 lpfc_mbx_unreg_vpi(vport);
5896 spin_lock_irq(shost->host_lock);
5897 vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
5898 spin_unlock_irq(shost->host_lock);
5899 if (vport->port_type == LPFC_PHYSICAL_PORT)
5900 lpfc_initial_flogi(vport);
5902 lpfc_initial_fdisc(vport);
5907 if (vport == phba->pport)
5908 if (phba->sli_rev < LPFC_SLI_REV4)
5909 lpfc_issue_fabric_reglogin(vport);
5911 lpfc_issue_reg_vfi(vport);
5913 lpfc_do_scr_ns_plogi(phba, vport);
5916 /* Now, we decrement the ndlp reference count held for this
5921 mempool_free(pmb, phba->mbox_mem_pool);
5926 * lpfc_register_new_vport - Register a new vport with a HBA
5927 * @phba: pointer to lpfc hba data structure.
5928 * @vport: pointer to a host virtual N_Port data structure.
5929 * @ndlp: pointer to a node-list data structure.
5931 * This routine registers the @vport as a new virtual port with a HBA.
5932 * It is done through a registering vpi mailbox command.
5935 lpfc_register_new_vport(struct lpfc_hba *phba, struct lpfc_vport *vport,
5936 struct lpfc_nodelist *ndlp)
5938 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
5941 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
5943 lpfc_reg_vpi(vport, mbox);
5944 mbox->vport = vport;
5945 mbox->context2 = lpfc_nlp_get(ndlp);
5946 mbox->mbox_cmpl = lpfc_cmpl_reg_new_vport;
5947 if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT)
5948 == MBX_NOT_FINISHED) {
5949 /* mailbox command not success, decrement ndlp
5950 * reference count for this command
5953 mempool_free(mbox, phba->mbox_mem_pool);
5955 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
5956 "0253 Register VPI: Can't send mbox\n");
5960 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
5961 "0254 Register VPI: no memory\n");
5967 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
5968 spin_lock_irq(shost->host_lock);
5969 vport->fc_flag &= ~FC_VPORT_NEEDS_REG_VPI;
5970 spin_unlock_irq(shost->host_lock);
5975 * lpfc_cmpl_els_fdisc - Completion function for fdisc iocb command
5976 * @phba: pointer to lpfc hba data structure.
5977 * @cmdiocb: pointer to lpfc command iocb data structure.
5978 * @rspiocb: pointer to lpfc response iocb data structure.
5980 * This routine is the completion callback function to a Fabric Discover
5981 * (FDISC) ELS command. Since all the FDISC ELS commands are issued
5982 * single threaded, each FDISC completion callback function will reset
5983 * the discovery timer for all vports such that the timers will not get
5984 * unnecessary timeout. The function checks the FDISC IOCB status. If error
5985 * detected, the vport will be set to FC_VPORT_FAILED state. Otherwise,the
5986 * vport will set to FC_VPORT_ACTIVE state. It then checks whether the DID
5987 * assigned to the vport has been changed with the completion of the FDISC
5988 * command. If so, both RPI (Remote Port Index) and VPI (Virtual Port Index)
5989 * are unregistered from the HBA, and then the lpfc_register_new_vport()
5990 * routine is invoked to register new vport with the HBA. Otherwise, the
5991 * lpfc_do_scr_ns_plogi() routine is invoked to issue a PLOGI to the Name
5992 * Server for State Change Request (SCR).
5995 lpfc_cmpl_els_fdisc(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
5996 struct lpfc_iocbq *rspiocb)
5998 struct lpfc_vport *vport = cmdiocb->vport;
5999 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
6000 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) cmdiocb->context1;
6001 struct lpfc_nodelist *np;
6002 struct lpfc_nodelist *next_np;
6003 IOCB_t *irsp = &rspiocb->iocb;
6004 struct lpfc_iocbq *piocb;
6006 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
6007 "0123 FDISC completes. x%x/x%x prevDID: x%x\n",
6008 irsp->ulpStatus, irsp->un.ulpWord[4],
6010 /* Since all FDISCs are being single threaded, we
6011 * must reset the discovery timer for ALL vports
6012 * waiting to send FDISC when one completes.
6014 list_for_each_entry(piocb, &phba->fabric_iocb_list, list) {
6015 lpfc_set_disctmo(piocb->vport);
6018 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
6019 "FDISC cmpl: status:x%x/x%x prevdid:x%x",
6020 irsp->ulpStatus, irsp->un.ulpWord[4], vport->fc_prevDID);
6022 if (irsp->ulpStatus) {
6023 /* Check for retry */
6024 if (lpfc_els_retry(phba, cmdiocb, rspiocb))
6027 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
6028 "0126 FDISC failed. (%d/%d)\n",
6029 irsp->ulpStatus, irsp->un.ulpWord[4]);
6032 if (vport->fc_vport->vport_state == FC_VPORT_INITIALIZING)
6033 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
6035 /* giving up on FDISC. Cancel discovery timer */
6036 lpfc_can_disctmo(vport);
6037 spin_lock_irq(shost->host_lock);
6038 vport->fc_flag |= FC_FABRIC;
6039 if (vport->phba->fc_topology == TOPOLOGY_LOOP)
6040 vport->fc_flag |= FC_PUBLIC_LOOP;
6041 spin_unlock_irq(shost->host_lock);
6043 vport->fc_myDID = irsp->un.ulpWord[4] & Mask_DID;
6044 lpfc_vport_set_state(vport, FC_VPORT_ACTIVE);
6045 if ((vport->fc_prevDID != vport->fc_myDID) &&
6046 !(vport->fc_flag & FC_VPORT_NEEDS_REG_VPI)) {
6047 /* If our NportID changed, we need to ensure all
6048 * remaining NPORTs get unreg_login'ed so we can
6051 list_for_each_entry_safe(np, next_np,
6052 &vport->fc_nodes, nlp_listp) {
6053 if (!NLP_CHK_NODE_ACT(ndlp) ||
6054 (np->nlp_state != NLP_STE_NPR_NODE) ||
6055 !(np->nlp_flag & NLP_NPR_ADISC))
6057 spin_lock_irq(shost->host_lock);
6058 np->nlp_flag &= ~NLP_NPR_ADISC;
6059 spin_unlock_irq(shost->host_lock);
6060 lpfc_unreg_rpi(vport, np);
6062 lpfc_mbx_unreg_vpi(vport);
6063 spin_lock_irq(shost->host_lock);
6064 vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
6065 spin_unlock_irq(shost->host_lock);
6068 if (vport->fc_flag & FC_VPORT_NEEDS_REG_VPI)
6069 lpfc_register_new_vport(phba, vport, ndlp);
6071 lpfc_do_scr_ns_plogi(phba, vport);
6074 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
6075 /* Cancel discovery timer */
6076 lpfc_can_disctmo(vport);
6079 lpfc_els_free_iocb(phba, cmdiocb);
6083 * lpfc_issue_els_fdisc - Issue a fdisc iocb command
6084 * @vport: pointer to a virtual N_Port data structure.
6085 * @ndlp: pointer to a node-list data structure.
6086 * @retry: number of retries to the command IOCB.
6088 * This routine prepares and issues a Fabric Discover (FDISC) IOCB to
6089 * a remote node (@ndlp) off a @vport. It uses the lpfc_issue_fabric_iocb()
6090 * routine to issue the IOCB, which makes sure only one outstanding fabric
6091 * IOCB will be sent off HBA at any given time.
6093 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
6094 * will be incremented by 1 for holding the ndlp and the reference to ndlp
6095 * will be stored into the context1 field of the IOCB for the completion
6096 * callback function to the FDISC ELS command.
6099 * 0 - Successfully issued fdisc iocb command
6100 * 1 - Failed to issue fdisc iocb command
6103 lpfc_issue_els_fdisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
6106 struct lpfc_hba *phba = vport->phba;
6108 struct lpfc_iocbq *elsiocb;
6109 struct serv_parm *sp;
6112 int did = ndlp->nlp_DID;
6115 cmdsize = (sizeof(uint32_t) + sizeof(struct serv_parm));
6116 elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp, did,
6119 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
6120 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
6121 "0255 Issue FDISC: no IOCB\n");
6125 icmd = &elsiocb->iocb;
6126 icmd->un.elsreq64.myID = 0;
6127 icmd->un.elsreq64.fl = 1;
6129 if (phba->sli_rev == LPFC_SLI_REV4) {
6130 /* FDISC needs to be 1 for WQE VPI */
6131 elsiocb->iocb.ulpCt_h = (SLI4_CT_VPI >> 1) & 1;
6132 elsiocb->iocb.ulpCt_l = SLI4_CT_VPI & 1 ;
6133 /* Set the ulpContext to the vpi */
6134 elsiocb->iocb.ulpContext = vport->vpi + phba->vpi_base;
6136 /* For FDISC, Let FDISC rsp set the NPortID for this VPI */
6141 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
6142 *((uint32_t *) (pcmd)) = ELS_CMD_FDISC;
6143 pcmd += sizeof(uint32_t); /* CSP Word 1 */
6144 memcpy(pcmd, &vport->phba->pport->fc_sparam, sizeof(struct serv_parm));
6145 sp = (struct serv_parm *) pcmd;
6146 /* Setup CSPs accordingly for Fabric */
6147 sp->cmn.e_d_tov = 0;
6148 sp->cmn.w2.r_a_tov = 0;
6149 sp->cls1.classValid = 0;
6150 sp->cls2.seqDelivery = 1;
6151 sp->cls3.seqDelivery = 1;
6153 pcmd += sizeof(uint32_t); /* CSP Word 2 */
6154 pcmd += sizeof(uint32_t); /* CSP Word 3 */
6155 pcmd += sizeof(uint32_t); /* CSP Word 4 */
6156 pcmd += sizeof(uint32_t); /* Port Name */
6157 memcpy(pcmd, &vport->fc_portname, 8);
6158 pcmd += sizeof(uint32_t); /* Node Name */
6159 pcmd += sizeof(uint32_t); /* Node Name */
6160 memcpy(pcmd, &vport->fc_nodename, 8);
6162 lpfc_set_disctmo(vport);
6164 phba->fc_stat.elsXmitFDISC++;
6165 elsiocb->iocb_cmpl = lpfc_cmpl_els_fdisc;
6167 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
6168 "Issue FDISC: did:x%x",
6171 rc = lpfc_issue_fabric_iocb(phba, elsiocb);
6172 if (rc == IOCB_ERROR) {
6173 lpfc_els_free_iocb(phba, elsiocb);
6174 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
6175 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
6176 "0256 Issue FDISC: Cannot send IOCB\n");
6179 lpfc_vport_set_state(vport, FC_VPORT_INITIALIZING);
6180 vport->port_state = LPFC_FDISC;
6185 * lpfc_cmpl_els_npiv_logo - Completion function with vport logo
6186 * @phba: pointer to lpfc hba data structure.
6187 * @cmdiocb: pointer to lpfc command iocb data structure.
6188 * @rspiocb: pointer to lpfc response iocb data structure.
6190 * This routine is the completion callback function to the issuing of a LOGO
6191 * ELS command off a vport. It frees the command IOCB and then decrement the
6192 * reference count held on ndlp for this completion function, indicating that
6193 * the reference to the ndlp is no long needed. Note that the
6194 * lpfc_els_free_iocb() routine decrements the ndlp reference held for this
6195 * callback function and an additional explicit ndlp reference decrementation
6196 * will trigger the actual release of the ndlp.
6199 lpfc_cmpl_els_npiv_logo(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
6200 struct lpfc_iocbq *rspiocb)
6202 struct lpfc_vport *vport = cmdiocb->vport;
6204 struct lpfc_nodelist *ndlp;
6205 ndlp = (struct lpfc_nodelist *)cmdiocb->context1;
6207 irsp = &rspiocb->iocb;
6208 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
6209 "LOGO npiv cmpl: status:x%x/x%x did:x%x",
6210 irsp->ulpStatus, irsp->un.ulpWord[4], irsp->un.rcvels.remoteID);
6212 lpfc_els_free_iocb(phba, cmdiocb);
6213 vport->unreg_vpi_cmpl = VPORT_ERROR;
6215 /* Trigger the release of the ndlp after logo */
6220 * lpfc_issue_els_npiv_logo - Issue a logo off a vport
6221 * @vport: pointer to a virtual N_Port data structure.
6222 * @ndlp: pointer to a node-list data structure.
6224 * This routine issues a LOGO ELS command to an @ndlp off a @vport.
6226 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
6227 * will be incremented by 1 for holding the ndlp and the reference to ndlp
6228 * will be stored into the context1 field of the IOCB for the completion
6229 * callback function to the LOGO ELS command.
6232 * 0 - Successfully issued logo off the @vport
6233 * 1 - Failed to issue logo off the @vport
6236 lpfc_issue_els_npiv_logo(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
6238 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
6239 struct lpfc_hba *phba = vport->phba;
6241 struct lpfc_iocbq *elsiocb;
6245 cmdsize = 2 * sizeof(uint32_t) + sizeof(struct lpfc_name);
6246 elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, 0, ndlp, ndlp->nlp_DID,
6251 icmd = &elsiocb->iocb;
6252 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
6253 *((uint32_t *) (pcmd)) = ELS_CMD_LOGO;
6254 pcmd += sizeof(uint32_t);
6256 /* Fill in LOGO payload */
6257 *((uint32_t *) (pcmd)) = be32_to_cpu(vport->fc_myDID);
6258 pcmd += sizeof(uint32_t);
6259 memcpy(pcmd, &vport->fc_portname, sizeof(struct lpfc_name));
6261 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
6262 "Issue LOGO npiv did:x%x flg:x%x",
6263 ndlp->nlp_DID, ndlp->nlp_flag, 0);
6265 elsiocb->iocb_cmpl = lpfc_cmpl_els_npiv_logo;
6266 spin_lock_irq(shost->host_lock);
6267 ndlp->nlp_flag |= NLP_LOGO_SND;
6268 spin_unlock_irq(shost->host_lock);
6269 if (lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0) ==
6271 spin_lock_irq(shost->host_lock);
6272 ndlp->nlp_flag &= ~NLP_LOGO_SND;
6273 spin_unlock_irq(shost->host_lock);
6274 lpfc_els_free_iocb(phba, elsiocb);
6281 * lpfc_fabric_block_timeout - Handler function to the fabric block timer
6282 * @ptr: holder for the timer function associated data.
6284 * This routine is invoked by the fabric iocb block timer after
6285 * timeout. It posts the fabric iocb block timeout event by setting the
6286 * WORKER_FABRIC_BLOCK_TMO bit to work port event bitmap and then invokes
6287 * lpfc_worker_wake_up() routine to wake up the worker thread. It is for
6288 * the worker thread to invoke the lpfc_unblock_fabric_iocbs() on the
6289 * posted event WORKER_FABRIC_BLOCK_TMO.
6292 lpfc_fabric_block_timeout(unsigned long ptr)
6294 struct lpfc_hba *phba = (struct lpfc_hba *) ptr;
6295 unsigned long iflags;
6296 uint32_t tmo_posted;
6298 spin_lock_irqsave(&phba->pport->work_port_lock, iflags);
6299 tmo_posted = phba->pport->work_port_events & WORKER_FABRIC_BLOCK_TMO;
6301 phba->pport->work_port_events |= WORKER_FABRIC_BLOCK_TMO;
6302 spin_unlock_irqrestore(&phba->pport->work_port_lock, iflags);
6305 lpfc_worker_wake_up(phba);
6310 * lpfc_resume_fabric_iocbs - Issue a fabric iocb from driver internal list
6311 * @phba: pointer to lpfc hba data structure.
6313 * This routine issues one fabric iocb from the driver internal list to
6314 * the HBA. It first checks whether it's ready to issue one fabric iocb to
6315 * the HBA (whether there is no outstanding fabric iocb). If so, it shall
6316 * remove one pending fabric iocb from the driver internal list and invokes
6317 * lpfc_sli_issue_iocb() routine to send the fabric iocb to the HBA.
6320 lpfc_resume_fabric_iocbs(struct lpfc_hba *phba)
6322 struct lpfc_iocbq *iocb;
6323 unsigned long iflags;
6329 spin_lock_irqsave(&phba->hbalock, iflags);
6330 /* Post any pending iocb to the SLI layer */
6331 if (atomic_read(&phba->fabric_iocb_count) == 0) {
6332 list_remove_head(&phba->fabric_iocb_list, iocb, typeof(*iocb),
6335 /* Increment fabric iocb count to hold the position */
6336 atomic_inc(&phba->fabric_iocb_count);
6338 spin_unlock_irqrestore(&phba->hbalock, iflags);
6340 iocb->fabric_iocb_cmpl = iocb->iocb_cmpl;
6341 iocb->iocb_cmpl = lpfc_cmpl_fabric_iocb;
6342 iocb->iocb_flag |= LPFC_IO_FABRIC;
6344 lpfc_debugfs_disc_trc(iocb->vport, LPFC_DISC_TRC_ELS_CMD,
6345 "Fabric sched1: ste:x%x",
6346 iocb->vport->port_state, 0, 0);
6348 ret = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, iocb, 0);
6350 if (ret == IOCB_ERROR) {
6351 iocb->iocb_cmpl = iocb->fabric_iocb_cmpl;
6352 iocb->fabric_iocb_cmpl = NULL;
6353 iocb->iocb_flag &= ~LPFC_IO_FABRIC;
6355 cmd->ulpStatus = IOSTAT_LOCAL_REJECT;
6356 cmd->un.ulpWord[4] = IOERR_SLI_ABORTED;
6357 iocb->iocb_cmpl(phba, iocb, iocb);
6359 atomic_dec(&phba->fabric_iocb_count);
6368 * lpfc_unblock_fabric_iocbs - Unblock issuing fabric iocb command
6369 * @phba: pointer to lpfc hba data structure.
6371 * This routine unblocks the issuing fabric iocb command. The function
6372 * will clear the fabric iocb block bit and then invoke the routine
6373 * lpfc_resume_fabric_iocbs() to issue one of the pending fabric iocb
6374 * from the driver internal fabric iocb list.
6377 lpfc_unblock_fabric_iocbs(struct lpfc_hba *phba)
6379 clear_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags);
6381 lpfc_resume_fabric_iocbs(phba);
6386 * lpfc_block_fabric_iocbs - Block issuing fabric iocb command
6387 * @phba: pointer to lpfc hba data structure.
6389 * This routine blocks the issuing fabric iocb for a specified amount of
6390 * time (currently 100 ms). This is done by set the fabric iocb block bit
6391 * and set up a timeout timer for 100ms. When the block bit is set, no more
6392 * fabric iocb will be issued out of the HBA.
6395 lpfc_block_fabric_iocbs(struct lpfc_hba *phba)
6399 blocked = test_and_set_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags);
6400 /* Start a timer to unblock fabric iocbs after 100ms */
6402 mod_timer(&phba->fabric_block_timer, jiffies + HZ/10 );
6408 * lpfc_cmpl_fabric_iocb - Completion callback function for fabric iocb
6409 * @phba: pointer to lpfc hba data structure.
6410 * @cmdiocb: pointer to lpfc command iocb data structure.
6411 * @rspiocb: pointer to lpfc response iocb data structure.
6413 * This routine is the callback function that is put to the fabric iocb's
6414 * callback function pointer (iocb->iocb_cmpl). The original iocb's callback
6415 * function pointer has been stored in iocb->fabric_iocb_cmpl. This callback
6416 * function first restores and invokes the original iocb's callback function
6417 * and then invokes the lpfc_resume_fabric_iocbs() routine to issue the next
6418 * fabric bound iocb from the driver internal fabric iocb list onto the wire.
6421 lpfc_cmpl_fabric_iocb(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
6422 struct lpfc_iocbq *rspiocb)
6426 if ((cmdiocb->iocb_flag & LPFC_IO_FABRIC) != LPFC_IO_FABRIC)
6429 switch (rspiocb->iocb.ulpStatus) {
6430 case IOSTAT_NPORT_RJT:
6431 case IOSTAT_FABRIC_RJT:
6432 if (rspiocb->iocb.un.ulpWord[4] & RJT_UNAVAIL_TEMP) {
6433 lpfc_block_fabric_iocbs(phba);
6437 case IOSTAT_NPORT_BSY:
6438 case IOSTAT_FABRIC_BSY:
6439 lpfc_block_fabric_iocbs(phba);
6443 stat.un.lsRjtError =
6444 be32_to_cpu(rspiocb->iocb.un.ulpWord[4]);
6445 if ((stat.un.b.lsRjtRsnCode == LSRJT_UNABLE_TPC) ||
6446 (stat.un.b.lsRjtRsnCode == LSRJT_LOGICAL_BSY))
6447 lpfc_block_fabric_iocbs(phba);
6451 if (atomic_read(&phba->fabric_iocb_count) == 0)
6454 cmdiocb->iocb_cmpl = cmdiocb->fabric_iocb_cmpl;
6455 cmdiocb->fabric_iocb_cmpl = NULL;
6456 cmdiocb->iocb_flag &= ~LPFC_IO_FABRIC;
6457 cmdiocb->iocb_cmpl(phba, cmdiocb, rspiocb);
6459 atomic_dec(&phba->fabric_iocb_count);
6460 if (!test_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags)) {
6461 /* Post any pending iocbs to HBA */
6462 lpfc_resume_fabric_iocbs(phba);
6467 * lpfc_issue_fabric_iocb - Issue a fabric iocb command
6468 * @phba: pointer to lpfc hba data structure.
6469 * @iocb: pointer to lpfc command iocb data structure.
6471 * This routine is used as the top-level API for issuing a fabric iocb command
6472 * such as FLOGI and FDISC. To accommodate certain switch fabric, this driver
6473 * function makes sure that only one fabric bound iocb will be outstanding at
6474 * any given time. As such, this function will first check to see whether there
6475 * is already an outstanding fabric iocb on the wire. If so, it will put the
6476 * newly issued iocb onto the driver internal fabric iocb list, waiting to be
6477 * issued later. Otherwise, it will issue the iocb on the wire and update the
6478 * fabric iocb count it indicate that there is one fabric iocb on the wire.
6480 * Note, this implementation has a potential sending out fabric IOCBs out of
6481 * order. The problem is caused by the construction of the "ready" boolen does
6482 * not include the condition that the internal fabric IOCB list is empty. As
6483 * such, it is possible a fabric IOCB issued by this routine might be "jump"
6484 * ahead of the fabric IOCBs in the internal list.
6487 * IOCB_SUCCESS - either fabric iocb put on the list or issued successfully
6488 * IOCB_ERROR - failed to issue fabric iocb
6491 lpfc_issue_fabric_iocb(struct lpfc_hba *phba, struct lpfc_iocbq *iocb)
6493 unsigned long iflags;
6497 if (atomic_read(&phba->fabric_iocb_count) > 1)
6500 spin_lock_irqsave(&phba->hbalock, iflags);
6501 ready = atomic_read(&phba->fabric_iocb_count) == 0 &&
6502 !test_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags);
6505 /* Increment fabric iocb count to hold the position */
6506 atomic_inc(&phba->fabric_iocb_count);
6507 spin_unlock_irqrestore(&phba->hbalock, iflags);
6509 iocb->fabric_iocb_cmpl = iocb->iocb_cmpl;
6510 iocb->iocb_cmpl = lpfc_cmpl_fabric_iocb;
6511 iocb->iocb_flag |= LPFC_IO_FABRIC;
6513 lpfc_debugfs_disc_trc(iocb->vport, LPFC_DISC_TRC_ELS_CMD,
6514 "Fabric sched2: ste:x%x",
6515 iocb->vport->port_state, 0, 0);
6517 ret = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, iocb, 0);
6519 if (ret == IOCB_ERROR) {
6520 iocb->iocb_cmpl = iocb->fabric_iocb_cmpl;
6521 iocb->fabric_iocb_cmpl = NULL;
6522 iocb->iocb_flag &= ~LPFC_IO_FABRIC;
6523 atomic_dec(&phba->fabric_iocb_count);
6526 spin_lock_irqsave(&phba->hbalock, iflags);
6527 list_add_tail(&iocb->list, &phba->fabric_iocb_list);
6528 spin_unlock_irqrestore(&phba->hbalock, iflags);
6535 * lpfc_fabric_abort_vport - Abort a vport's iocbs from driver fabric iocb list
6536 * @vport: pointer to a virtual N_Port data structure.
6538 * This routine aborts all the IOCBs associated with a @vport from the
6539 * driver internal fabric IOCB list. The list contains fabric IOCBs to be
6540 * issued to the ELS IOCB ring. This abort function walks the fabric IOCB
6541 * list, removes each IOCB associated with the @vport off the list, set the
6542 * status feild to IOSTAT_LOCAL_REJECT, and invokes the callback function
6543 * associated with the IOCB.
6545 static void lpfc_fabric_abort_vport(struct lpfc_vport *vport)
6547 LIST_HEAD(completions);
6548 struct lpfc_hba *phba = vport->phba;
6549 struct lpfc_iocbq *tmp_iocb, *piocb;
6551 spin_lock_irq(&phba->hbalock);
6552 list_for_each_entry_safe(piocb, tmp_iocb, &phba->fabric_iocb_list,
6555 if (piocb->vport != vport)
6558 list_move_tail(&piocb->list, &completions);
6560 spin_unlock_irq(&phba->hbalock);
6562 /* Cancel all the IOCBs from the completions list */
6563 lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
6568 * lpfc_fabric_abort_nport - Abort a ndlp's iocbs from driver fabric iocb list
6569 * @ndlp: pointer to a node-list data structure.
6571 * This routine aborts all the IOCBs associated with an @ndlp from the
6572 * driver internal fabric IOCB list. The list contains fabric IOCBs to be
6573 * issued to the ELS IOCB ring. This abort function walks the fabric IOCB
6574 * list, removes each IOCB associated with the @ndlp off the list, set the
6575 * status feild to IOSTAT_LOCAL_REJECT, and invokes the callback function
6576 * associated with the IOCB.
6578 void lpfc_fabric_abort_nport(struct lpfc_nodelist *ndlp)
6580 LIST_HEAD(completions);
6581 struct lpfc_hba *phba = ndlp->phba;
6582 struct lpfc_iocbq *tmp_iocb, *piocb;
6583 struct lpfc_sli_ring *pring = &phba->sli.ring[LPFC_ELS_RING];
6585 spin_lock_irq(&phba->hbalock);
6586 list_for_each_entry_safe(piocb, tmp_iocb, &phba->fabric_iocb_list,
6588 if ((lpfc_check_sli_ndlp(phba, pring, piocb, ndlp))) {
6590 list_move_tail(&piocb->list, &completions);
6593 spin_unlock_irq(&phba->hbalock);
6595 /* Cancel all the IOCBs from the completions list */
6596 lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
6601 * lpfc_fabric_abort_hba - Abort all iocbs on driver fabric iocb list
6602 * @phba: pointer to lpfc hba data structure.
6604 * This routine aborts all the IOCBs currently on the driver internal
6605 * fabric IOCB list. The list contains fabric IOCBs to be issued to the ELS
6606 * IOCB ring. This function takes the entire IOCB list off the fabric IOCB
6607 * list, removes IOCBs off the list, set the status feild to
6608 * IOSTAT_LOCAL_REJECT, and invokes the callback function associated with
6611 void lpfc_fabric_abort_hba(struct lpfc_hba *phba)
6613 LIST_HEAD(completions);
6615 spin_lock_irq(&phba->hbalock);
6616 list_splice_init(&phba->fabric_iocb_list, &completions);
6617 spin_unlock_irq(&phba->hbalock);
6619 /* Cancel all the IOCBs from the completions list */
6620 lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
6625 * lpfc_sli4_els_xri_aborted - Slow-path process of els xri abort
6626 * @phba: pointer to lpfc hba data structure.
6627 * @axri: pointer to the els xri abort wcqe structure.
6629 * This routine is invoked by the worker thread to process a SLI4 slow-path
6633 lpfc_sli4_els_xri_aborted(struct lpfc_hba *phba,
6634 struct sli4_wcqe_xri_aborted *axri)
6636 uint16_t xri = bf_get(lpfc_wcqe_xa_xri, axri);
6637 struct lpfc_sglq *sglq_entry = NULL, *sglq_next = NULL;
6638 unsigned long iflag = 0;
6640 spin_lock_irqsave(&phba->sli4_hba.abts_sgl_list_lock, iflag);
6641 list_for_each_entry_safe(sglq_entry, sglq_next,
6642 &phba->sli4_hba.lpfc_abts_els_sgl_list, list) {
6643 if (sglq_entry->sli4_xritag == xri) {
6644 list_del(&sglq_entry->list);
6645 spin_unlock_irqrestore(
6646 &phba->sli4_hba.abts_sgl_list_lock,
6648 spin_lock_irqsave(&phba->hbalock, iflag);
6650 list_add_tail(&sglq_entry->list,
6651 &phba->sli4_hba.lpfc_sgl_list);
6652 spin_unlock_irqrestore(&phba->hbalock, iflag);
6656 spin_unlock_irqrestore(&phba->sli4_hba.abts_sgl_list_lock, iflag);