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 (phba->hba_flag & HBA_FIP_SUPPORT) &&
177 ((elscmd == ELS_CMD_FLOGI) ||
178 (elscmd == ELS_CMD_FDISC) ||
179 (elscmd == ELS_CMD_LOGO)))
182 elsiocb->iocb_flag |= ((ELS_ID_FLOGI << LPFC_FIP_ELS_ID_SHIFT)
183 & LPFC_FIP_ELS_ID_MASK);
186 elsiocb->iocb_flag |= ((ELS_ID_FDISC << LPFC_FIP_ELS_ID_SHIFT)
187 & LPFC_FIP_ELS_ID_MASK);
190 elsiocb->iocb_flag |= ((ELS_ID_LOGO << LPFC_FIP_ELS_ID_SHIFT)
191 & LPFC_FIP_ELS_ID_MASK);
195 elsiocb->iocb_flag &= ~LPFC_FIP_ELS_ID_MASK;
197 icmd = &elsiocb->iocb;
199 /* fill in BDEs for command */
200 /* Allocate buffer for command payload */
201 pcmd = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
203 pcmd->virt = lpfc_mbuf_alloc(phba, MEM_PRI, &pcmd->phys);
204 if (!pcmd || !pcmd->virt)
205 goto els_iocb_free_pcmb_exit;
207 INIT_LIST_HEAD(&pcmd->list);
209 /* Allocate buffer for response payload */
211 prsp = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
213 prsp->virt = lpfc_mbuf_alloc(phba, MEM_PRI,
215 if (!prsp || !prsp->virt)
216 goto els_iocb_free_prsp_exit;
217 INIT_LIST_HEAD(&prsp->list);
221 /* Allocate buffer for Buffer ptr list */
222 pbuflist = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
224 pbuflist->virt = lpfc_mbuf_alloc(phba, MEM_PRI,
226 if (!pbuflist || !pbuflist->virt)
227 goto els_iocb_free_pbuf_exit;
229 INIT_LIST_HEAD(&pbuflist->list);
231 icmd->un.elsreq64.bdl.addrHigh = putPaddrHigh(pbuflist->phys);
232 icmd->un.elsreq64.bdl.addrLow = putPaddrLow(pbuflist->phys);
233 icmd->un.elsreq64.bdl.bdeFlags = BUFF_TYPE_BLP_64;
234 icmd->un.elsreq64.remoteID = did; /* DID */
236 icmd->un.elsreq64.bdl.bdeSize = (2 * sizeof(struct ulp_bde64));
237 icmd->ulpCommand = CMD_ELS_REQUEST64_CR;
238 icmd->ulpTimeout = phba->fc_ratov * 2;
240 icmd->un.elsreq64.bdl.bdeSize = sizeof(struct ulp_bde64);
241 icmd->ulpCommand = CMD_XMIT_ELS_RSP64_CX;
243 icmd->ulpBdeCount = 1;
245 icmd->ulpClass = CLASS3;
247 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) {
248 icmd->un.elsreq64.myID = vport->fc_myDID;
250 /* For ELS_REQUEST64_CR, use the VPI by default */
251 icmd->ulpContext = vport->vpi + phba->vpi_base;
253 /* The CT field must be 0=INVALID_RPI for the ECHO cmd */
254 if (elscmd == ELS_CMD_ECHO)
255 icmd->ulpCt_l = 0; /* context = invalid RPI */
257 icmd->ulpCt_l = 1; /* context = VPI */
260 bpl = (struct ulp_bde64 *) pbuflist->virt;
261 bpl->addrLow = le32_to_cpu(putPaddrLow(pcmd->phys));
262 bpl->addrHigh = le32_to_cpu(putPaddrHigh(pcmd->phys));
263 bpl->tus.f.bdeSize = cmdSize;
264 bpl->tus.f.bdeFlags = 0;
265 bpl->tus.w = le32_to_cpu(bpl->tus.w);
269 bpl->addrLow = le32_to_cpu(putPaddrLow(prsp->phys));
270 bpl->addrHigh = le32_to_cpu(putPaddrHigh(prsp->phys));
271 bpl->tus.f.bdeSize = FCELSSIZE;
272 bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64;
273 bpl->tus.w = le32_to_cpu(bpl->tus.w);
276 /* prevent preparing iocb with NULL ndlp reference */
277 elsiocb->context1 = lpfc_nlp_get(ndlp);
278 if (!elsiocb->context1)
279 goto els_iocb_free_pbuf_exit;
280 elsiocb->context2 = pcmd;
281 elsiocb->context3 = pbuflist;
282 elsiocb->retry = retry;
283 elsiocb->vport = vport;
284 elsiocb->drvrTimeout = (phba->fc_ratov << 1) + LPFC_DRVR_TIMEOUT;
287 list_add(&prsp->list, &pcmd->list);
290 /* Xmit ELS command <elsCmd> to remote NPORT <did> */
291 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
292 "0116 Xmit ELS command x%x to remote "
293 "NPORT x%x I/O tag: x%x, port state: x%x\n",
294 elscmd, did, elsiocb->iotag,
297 /* Xmit ELS response <elsCmd> to remote NPORT <did> */
298 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
299 "0117 Xmit ELS response x%x to remote "
300 "NPORT x%x I/O tag: x%x, size: x%x\n",
301 elscmd, ndlp->nlp_DID, elsiocb->iotag,
306 els_iocb_free_pbuf_exit:
308 lpfc_mbuf_free(phba, prsp->virt, prsp->phys);
311 els_iocb_free_prsp_exit:
312 lpfc_mbuf_free(phba, pcmd->virt, pcmd->phys);
315 els_iocb_free_pcmb_exit:
317 lpfc_sli_release_iocbq(phba, elsiocb);
322 * lpfc_issue_fabric_reglogin - Issue fabric registration login for a vport
323 * @vport: pointer to a host virtual N_Port data structure.
325 * This routine issues a fabric registration login for a @vport. An
326 * active ndlp node with Fabric_DID must already exist for this @vport.
327 * The routine invokes two mailbox commands to carry out fabric registration
328 * login through the HBA firmware: the first mailbox command requests the
329 * HBA to perform link configuration for the @vport; and the second mailbox
330 * command requests the HBA to perform the actual fabric registration login
334 * 0 - successfully issued fabric registration login for @vport
335 * -ENXIO -- failed to issue fabric registration login for @vport
338 lpfc_issue_fabric_reglogin(struct lpfc_vport *vport)
340 struct lpfc_hba *phba = vport->phba;
342 struct lpfc_dmabuf *mp;
343 struct lpfc_nodelist *ndlp;
344 struct serv_parm *sp;
348 sp = &phba->fc_fabparam;
349 ndlp = lpfc_findnode_did(vport, Fabric_DID);
350 if (!ndlp || !NLP_CHK_NODE_ACT(ndlp)) {
355 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
361 vport->port_state = LPFC_FABRIC_CFG_LINK;
362 lpfc_config_link(phba, mbox);
363 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
366 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
367 if (rc == MBX_NOT_FINISHED) {
372 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
377 rc = lpfc_reg_rpi(phba, vport->vpi, Fabric_DID, (uint8_t *)sp, mbox, 0);
383 mbox->mbox_cmpl = lpfc_mbx_cmpl_fabric_reg_login;
385 /* increment the reference count on ndlp to hold reference
386 * for the callback routine.
388 mbox->context2 = lpfc_nlp_get(ndlp);
390 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
391 if (rc == MBX_NOT_FINISHED) {
393 goto fail_issue_reg_login;
398 fail_issue_reg_login:
399 /* decrement the reference count on ndlp just incremented
400 * for the failed mbox command.
403 mp = (struct lpfc_dmabuf *) mbox->context1;
404 lpfc_mbuf_free(phba, mp->virt, mp->phys);
407 mempool_free(mbox, phba->mbox_mem_pool);
410 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
411 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
412 "0249 Cannot issue Register Fabric login: Err %d\n", err);
417 * lpfc_issue_reg_vfi - Register VFI for this vport's fabric login
418 * @vport: pointer to a host virtual N_Port data structure.
420 * This routine issues a REG_VFI mailbox for the vfi, vpi, fcfi triplet for
421 * the @vport. This mailbox command is necessary for FCoE only.
424 * 0 - successfully issued REG_VFI for @vport
425 * A failure code otherwise.
428 lpfc_issue_reg_vfi(struct lpfc_vport *vport)
430 struct lpfc_hba *phba = vport->phba;
432 struct lpfc_nodelist *ndlp;
433 struct serv_parm *sp;
434 struct lpfc_dmabuf *dmabuf;
437 sp = &phba->fc_fabparam;
438 ndlp = lpfc_findnode_did(vport, Fabric_DID);
439 if (!ndlp || !NLP_CHK_NODE_ACT(ndlp)) {
444 dmabuf = kzalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
449 dmabuf->virt = lpfc_mbuf_alloc(phba, MEM_PRI, &dmabuf->phys);
452 goto fail_free_dmabuf;
454 mboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
457 goto fail_free_coherent;
459 vport->port_state = LPFC_FABRIC_CFG_LINK;
460 memcpy(dmabuf->virt, &phba->fc_fabparam, sizeof(vport->fc_sparam));
461 lpfc_reg_vfi(mboxq, vport, dmabuf->phys);
462 mboxq->mbox_cmpl = lpfc_mbx_cmpl_reg_vfi;
463 mboxq->vport = vport;
464 mboxq->context1 = dmabuf;
465 rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_NOWAIT);
466 if (rc == MBX_NOT_FINISHED) {
473 mempool_free(mboxq, phba->mbox_mem_pool);
475 lpfc_mbuf_free(phba, dmabuf->virt, dmabuf->phys);
479 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
480 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
481 "0289 Issue Register VFI failed: Err %d\n", rc);
486 * lpfc_cmpl_els_flogi_fabric - Completion function for flogi to a fabric port
487 * @vport: pointer to a host virtual N_Port data structure.
488 * @ndlp: pointer to a node-list data structure.
489 * @sp: pointer to service parameter data structure.
490 * @irsp: pointer to the IOCB within the lpfc response IOCB.
492 * This routine is invoked by the lpfc_cmpl_els_flogi() completion callback
493 * function to handle the completion of a Fabric Login (FLOGI) into a fabric
494 * port in a fabric topology. It properly sets up the parameters to the @ndlp
495 * from the IOCB response. It also check the newly assigned N_Port ID to the
496 * @vport against the previously assigned N_Port ID. If it is different from
497 * the previously assigned Destination ID (DID), the lpfc_unreg_rpi() routine
498 * is invoked on all the remaining nodes with the @vport to unregister the
499 * Remote Port Indicators (RPIs). Finally, the lpfc_issue_fabric_reglogin()
500 * is invoked to register login to the fabric.
503 * 0 - Success (currently, always return 0)
506 lpfc_cmpl_els_flogi_fabric(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
507 struct serv_parm *sp, IOCB_t *irsp)
509 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
510 struct lpfc_hba *phba = vport->phba;
511 struct lpfc_nodelist *np;
512 struct lpfc_nodelist *next_np;
514 spin_lock_irq(shost->host_lock);
515 vport->fc_flag |= FC_FABRIC;
516 spin_unlock_irq(shost->host_lock);
518 phba->fc_edtov = be32_to_cpu(sp->cmn.e_d_tov);
519 if (sp->cmn.edtovResolution) /* E_D_TOV ticks are in nanoseconds */
520 phba->fc_edtov = (phba->fc_edtov + 999999) / 1000000;
522 phba->fc_ratov = (be32_to_cpu(sp->cmn.w2.r_a_tov) + 999) / 1000;
524 if (phba->fc_topology == TOPOLOGY_LOOP) {
525 spin_lock_irq(shost->host_lock);
526 vport->fc_flag |= FC_PUBLIC_LOOP;
527 spin_unlock_irq(shost->host_lock);
530 * If we are a N-port connected to a Fabric, fixup sparam's so
531 * logins to devices on remote loops work.
533 vport->fc_sparam.cmn.altBbCredit = 1;
536 vport->fc_myDID = irsp->un.ulpWord[4] & Mask_DID;
537 memcpy(&ndlp->nlp_portname, &sp->portName, sizeof(struct lpfc_name));
538 memcpy(&ndlp->nlp_nodename, &sp->nodeName, sizeof(struct lpfc_name));
539 ndlp->nlp_class_sup = 0;
540 if (sp->cls1.classValid)
541 ndlp->nlp_class_sup |= FC_COS_CLASS1;
542 if (sp->cls2.classValid)
543 ndlp->nlp_class_sup |= FC_COS_CLASS2;
544 if (sp->cls3.classValid)
545 ndlp->nlp_class_sup |= FC_COS_CLASS3;
546 if (sp->cls4.classValid)
547 ndlp->nlp_class_sup |= FC_COS_CLASS4;
548 ndlp->nlp_maxframe = ((sp->cmn.bbRcvSizeMsb & 0x0F) << 8) |
549 sp->cmn.bbRcvSizeLsb;
550 memcpy(&phba->fc_fabparam, sp, sizeof(struct serv_parm));
552 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) {
553 if (sp->cmn.response_multiple_NPort) {
554 lpfc_printf_vlog(vport, KERN_WARNING,
556 "1816 FLOGI NPIV supported, "
557 "response data 0x%x\n",
558 sp->cmn.response_multiple_NPort);
559 phba->link_flag |= LS_NPIV_FAB_SUPPORTED;
561 /* Because we asked f/w for NPIV it still expects us
562 to call reg_vnpid atleast for the physcial host */
563 lpfc_printf_vlog(vport, KERN_WARNING,
565 "1817 Fabric does not support NPIV "
566 "- configuring single port mode.\n");
567 phba->link_flag &= ~LS_NPIV_FAB_SUPPORTED;
571 if ((vport->fc_prevDID != vport->fc_myDID) &&
572 !(vport->fc_flag & FC_VPORT_NEEDS_REG_VPI)) {
574 /* If our NportID changed, we need to ensure all
575 * remaining NPORTs get unreg_login'ed.
577 list_for_each_entry_safe(np, next_np,
578 &vport->fc_nodes, nlp_listp) {
579 if (!NLP_CHK_NODE_ACT(np))
581 if ((np->nlp_state != NLP_STE_NPR_NODE) ||
582 !(np->nlp_flag & NLP_NPR_ADISC))
584 spin_lock_irq(shost->host_lock);
585 np->nlp_flag &= ~NLP_NPR_ADISC;
586 spin_unlock_irq(shost->host_lock);
587 lpfc_unreg_rpi(vport, np);
589 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) {
590 lpfc_mbx_unreg_vpi(vport);
591 spin_lock_irq(shost->host_lock);
592 vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
593 spin_unlock_irq(shost->host_lock);
597 if (phba->sli_rev < LPFC_SLI_REV4) {
598 lpfc_nlp_set_state(vport, ndlp, NLP_STE_REG_LOGIN_ISSUE);
599 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED &&
600 vport->fc_flag & FC_VPORT_NEEDS_REG_VPI)
601 lpfc_register_new_vport(phba, vport, ndlp);
603 lpfc_issue_fabric_reglogin(vport);
605 ndlp->nlp_type |= NLP_FABRIC;
606 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
607 if (vport->vpi_state & LPFC_VPI_REGISTERED) {
608 lpfc_start_fdiscs(phba);
609 lpfc_do_scr_ns_plogi(phba, vport);
611 lpfc_issue_reg_vfi(vport);
616 * lpfc_cmpl_els_flogi_nport - Completion function for flogi to an N_Port
617 * @vport: pointer to a host virtual N_Port data structure.
618 * @ndlp: pointer to a node-list data structure.
619 * @sp: pointer to service parameter data structure.
621 * This routine is invoked by the lpfc_cmpl_els_flogi() completion callback
622 * function to handle the completion of a Fabric Login (FLOGI) into an N_Port
623 * in a point-to-point topology. First, the @vport's N_Port Name is compared
624 * with the received N_Port Name: if the @vport's N_Port Name is greater than
625 * the received N_Port Name lexicographically, this node shall assign local
626 * N_Port ID (PT2PT_LocalID: 1) and remote N_Port ID (PT2PT_RemoteID: 2) and
627 * will send out Port Login (PLOGI) with the N_Port IDs assigned. Otherwise,
628 * this node shall just wait for the remote node to issue PLOGI and assign
636 lpfc_cmpl_els_flogi_nport(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
637 struct serv_parm *sp)
639 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
640 struct lpfc_hba *phba = vport->phba;
644 spin_lock_irq(shost->host_lock);
645 vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
646 spin_unlock_irq(shost->host_lock);
648 phba->fc_edtov = FF_DEF_EDTOV;
649 phba->fc_ratov = FF_DEF_RATOV;
650 rc = memcmp(&vport->fc_portname, &sp->portName,
651 sizeof(vport->fc_portname));
653 /* This side will initiate the PLOGI */
654 spin_lock_irq(shost->host_lock);
655 vport->fc_flag |= FC_PT2PT_PLOGI;
656 spin_unlock_irq(shost->host_lock);
659 * N_Port ID cannot be 0, set our to LocalID the other
660 * side will be RemoteID.
665 vport->fc_myDID = PT2PT_LocalID;
667 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
671 lpfc_config_link(phba, mbox);
673 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
675 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
676 if (rc == MBX_NOT_FINISHED) {
677 mempool_free(mbox, phba->mbox_mem_pool);
680 /* Decrement ndlp reference count indicating that ndlp can be
681 * safely released when other references to it are done.
685 ndlp = lpfc_findnode_did(vport, PT2PT_RemoteID);
688 * Cannot find existing Fabric ndlp, so allocate a
691 ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL);
694 lpfc_nlp_init(vport, ndlp, PT2PT_RemoteID);
695 } else if (!NLP_CHK_NODE_ACT(ndlp)) {
696 ndlp = lpfc_enable_node(vport, ndlp,
697 NLP_STE_UNUSED_NODE);
702 memcpy(&ndlp->nlp_portname, &sp->portName,
703 sizeof(struct lpfc_name));
704 memcpy(&ndlp->nlp_nodename, &sp->nodeName,
705 sizeof(struct lpfc_name));
706 /* Set state will put ndlp onto node list if not already done */
707 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
708 spin_lock_irq(shost->host_lock);
709 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
710 spin_unlock_irq(shost->host_lock);
712 /* This side will wait for the PLOGI, decrement ndlp reference
713 * count indicating that ndlp can be released when other
714 * references to it are done.
718 /* If we are pt2pt with another NPort, force NPIV off! */
719 phba->sli3_options &= ~LPFC_SLI3_NPIV_ENABLED;
721 spin_lock_irq(shost->host_lock);
722 vport->fc_flag |= FC_PT2PT;
723 spin_unlock_irq(shost->host_lock);
725 /* Start discovery - this should just do CLEAR_LA */
726 lpfc_disc_start(vport);
733 * lpfc_cmpl_els_flogi - Completion callback function for flogi
734 * @phba: pointer to lpfc hba data structure.
735 * @cmdiocb: pointer to lpfc command iocb data structure.
736 * @rspiocb: pointer to lpfc response iocb data structure.
738 * This routine is the top-level completion callback function for issuing
739 * a Fabric Login (FLOGI) command. If the response IOCB reported error,
740 * the lpfc_els_retry() routine shall be invoked to retry the FLOGI. If
741 * retry has been made (either immediately or delayed with lpfc_els_retry()
742 * returning 1), the command IOCB will be released and function returned.
743 * If the retry attempt has been given up (possibly reach the maximum
744 * number of retries), one additional decrement of ndlp reference shall be
745 * invoked before going out after releasing the command IOCB. This will
746 * actually release the remote node (Note, lpfc_els_free_iocb() will also
747 * invoke one decrement of ndlp reference count). If no error reported in
748 * the IOCB status, the command Port ID field is used to determine whether
749 * this is a point-to-point topology or a fabric topology: if the Port ID
750 * field is assigned, it is a fabric topology; otherwise, it is a
751 * point-to-point topology. The routine lpfc_cmpl_els_flogi_fabric() or
752 * lpfc_cmpl_els_flogi_nport() shall be invoked accordingly to handle the
753 * specific topology completion conditions.
756 lpfc_cmpl_els_flogi(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
757 struct lpfc_iocbq *rspiocb)
759 struct lpfc_vport *vport = cmdiocb->vport;
760 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
761 IOCB_t *irsp = &rspiocb->iocb;
762 struct lpfc_nodelist *ndlp = cmdiocb->context1;
763 struct lpfc_dmabuf *pcmd = cmdiocb->context2, *prsp;
764 struct serv_parm *sp;
767 /* Check to see if link went down during discovery */
768 if (lpfc_els_chk_latt(vport)) {
769 /* One additional decrement on node reference count to
770 * trigger the release of the node
776 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
777 "FLOGI cmpl: status:x%x/x%x state:x%x",
778 irsp->ulpStatus, irsp->un.ulpWord[4],
781 if (irsp->ulpStatus) {
782 /* Check for retry */
783 if (lpfc_els_retry(phba, cmdiocb, rspiocb))
786 /* FLOGI failed, so there is no fabric */
787 spin_lock_irq(shost->host_lock);
788 vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
789 spin_unlock_irq(shost->host_lock);
791 /* If private loop, then allow max outstanding els to be
792 * LPFC_MAX_DISC_THREADS (32). Scanning in the case of no
793 * alpa map would take too long otherwise.
795 if (phba->alpa_map[0] == 0) {
796 vport->cfg_discovery_threads = LPFC_MAX_DISC_THREADS;
800 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
801 "0100 FLOGI failure Data: x%x x%x "
803 irsp->ulpStatus, irsp->un.ulpWord[4],
809 * The FLogI succeeded. Sync the data for the CPU before
812 prsp = list_get_first(&pcmd->list, struct lpfc_dmabuf, list);
814 sp = prsp->virt + sizeof(uint32_t);
816 /* FLOGI completes successfully */
817 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
818 "0101 FLOGI completes sucessfully "
819 "Data: x%x x%x x%x x%x\n",
820 irsp->un.ulpWord[4], sp->cmn.e_d_tov,
821 sp->cmn.w2.r_a_tov, sp->cmn.edtovResolution);
823 if (vport->port_state == LPFC_FLOGI) {
825 * If Common Service Parameters indicate Nport
826 * we are point to point, if Fport we are Fabric.
829 rc = lpfc_cmpl_els_flogi_fabric(vport, ndlp, sp, irsp);
831 rc = lpfc_cmpl_els_flogi_nport(vport, ndlp, sp);
840 if (!lpfc_error_lost_link(irsp)) {
841 /* FLOGI failed, so just use loop map to make discovery list */
842 lpfc_disc_list_loopmap(vport);
844 /* Start discovery */
845 lpfc_disc_start(vport);
846 } else if (((irsp->ulpStatus != IOSTAT_LOCAL_REJECT) ||
847 ((irsp->un.ulpWord[4] != IOERR_SLI_ABORTED) &&
848 (irsp->un.ulpWord[4] != IOERR_SLI_DOWN))) &&
849 (phba->link_state != LPFC_CLEAR_LA)) {
850 /* If FLOGI failed enable link interrupt. */
851 lpfc_issue_clear_la(phba, vport);
854 lpfc_els_free_iocb(phba, cmdiocb);
858 * lpfc_issue_els_flogi - Issue an flogi iocb command for a vport
859 * @vport: pointer to a host virtual N_Port data structure.
860 * @ndlp: pointer to a node-list data structure.
861 * @retry: number of retries to the command IOCB.
863 * This routine issues a Fabric Login (FLOGI) Request ELS command
864 * for a @vport. The initiator service parameters are put into the payload
865 * of the FLOGI Request IOCB and the top-level callback function pointer
866 * to lpfc_cmpl_els_flogi() routine is put to the IOCB completion callback
867 * function field. The lpfc_issue_fabric_iocb routine is invoked to send
868 * out FLOGI ELS command with one outstanding fabric IOCB at a time.
870 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
871 * will be incremented by 1 for holding the ndlp and the reference to ndlp
872 * will be stored into the context1 field of the IOCB for the completion
873 * callback function to the FLOGI ELS command.
876 * 0 - successfully issued flogi iocb for @vport
877 * 1 - failed to issue flogi iocb for @vport
880 lpfc_issue_els_flogi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
883 struct lpfc_hba *phba = vport->phba;
884 struct serv_parm *sp;
886 struct lpfc_iocbq *elsiocb;
887 struct lpfc_sli_ring *pring;
893 pring = &phba->sli.ring[LPFC_ELS_RING];
895 cmdsize = (sizeof(uint32_t) + sizeof(struct serv_parm));
896 elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp,
897 ndlp->nlp_DID, ELS_CMD_FLOGI);
902 icmd = &elsiocb->iocb;
903 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
905 /* For FLOGI request, remainder of payload is service parameters */
906 *((uint32_t *) (pcmd)) = ELS_CMD_FLOGI;
907 pcmd += sizeof(uint32_t);
908 memcpy(pcmd, &vport->fc_sparam, sizeof(struct serv_parm));
909 sp = (struct serv_parm *) pcmd;
911 /* Setup CSPs accordingly for Fabric */
913 sp->cmn.w2.r_a_tov = 0;
914 sp->cls1.classValid = 0;
915 sp->cls2.seqDelivery = 1;
916 sp->cls3.seqDelivery = 1;
917 if (sp->cmn.fcphLow < FC_PH3)
918 sp->cmn.fcphLow = FC_PH3;
919 if (sp->cmn.fcphHigh < FC_PH3)
920 sp->cmn.fcphHigh = FC_PH3;
922 if (phba->sli_rev == LPFC_SLI_REV4) {
923 elsiocb->iocb.ulpCt_h = ((SLI4_CT_FCFI >> 1) & 1);
924 elsiocb->iocb.ulpCt_l = (SLI4_CT_FCFI & 1);
925 /* FLOGI needs to be 3 for WQE FCFI */
926 /* Set the fcfi to the fcfi we registered with */
927 elsiocb->iocb.ulpContext = phba->fcf.fcfi;
928 } else if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) {
929 sp->cmn.request_multiple_Nport = 1;
930 /* For FLOGI, Let FLOGI rsp set the NPortID for VPI 0 */
935 if (phba->fc_topology != TOPOLOGY_LOOP) {
936 icmd->un.elsreq64.myID = 0;
937 icmd->un.elsreq64.fl = 1;
940 tmo = phba->fc_ratov;
941 phba->fc_ratov = LPFC_DISC_FLOGI_TMO;
942 lpfc_set_disctmo(vport);
943 phba->fc_ratov = tmo;
945 phba->fc_stat.elsXmitFLOGI++;
946 elsiocb->iocb_cmpl = lpfc_cmpl_els_flogi;
948 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
949 "Issue FLOGI: opt:x%x",
950 phba->sli3_options, 0, 0);
952 rc = lpfc_issue_fabric_iocb(phba, elsiocb);
953 if (rc == IOCB_ERROR) {
954 lpfc_els_free_iocb(phba, elsiocb);
961 * lpfc_els_abort_flogi - Abort all outstanding flogi iocbs
962 * @phba: pointer to lpfc hba data structure.
964 * This routine aborts all the outstanding Fabric Login (FLOGI) IOCBs
965 * with a @phba. This routine walks all the outstanding IOCBs on the txcmplq
966 * list and issues an abort IOCB commond on each outstanding IOCB that
967 * contains a active Fabric_DID ndlp. Note that this function is to issue
968 * the abort IOCB command on all the outstanding IOCBs, thus when this
969 * function returns, it does not guarantee all the IOCBs are actually aborted.
972 * 0 - Sucessfully issued abort iocb on all outstanding flogis (Always 0)
975 lpfc_els_abort_flogi(struct lpfc_hba *phba)
977 struct lpfc_sli_ring *pring;
978 struct lpfc_iocbq *iocb, *next_iocb;
979 struct lpfc_nodelist *ndlp;
982 /* Abort outstanding I/O on NPort <nlp_DID> */
983 lpfc_printf_log(phba, KERN_INFO, LOG_DISCOVERY,
984 "0201 Abort outstanding I/O on NPort x%x\n",
987 pring = &phba->sli.ring[LPFC_ELS_RING];
990 * Check the txcmplq for an iocb that matches the nport the driver is
993 spin_lock_irq(&phba->hbalock);
994 list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) {
996 if (icmd->ulpCommand == CMD_ELS_REQUEST64_CR &&
997 icmd->un.elsreq64.bdl.ulpIoTag32) {
998 ndlp = (struct lpfc_nodelist *)(iocb->context1);
999 if (ndlp && NLP_CHK_NODE_ACT(ndlp) &&
1000 (ndlp->nlp_DID == Fabric_DID))
1001 lpfc_sli_issue_abort_iotag(phba, pring, iocb);
1004 spin_unlock_irq(&phba->hbalock);
1010 * lpfc_initial_flogi - Issue an initial fabric login for a vport
1011 * @vport: pointer to a host virtual N_Port data structure.
1013 * This routine issues an initial Fabric Login (FLOGI) for the @vport
1014 * specified. It first searches the ndlp with the Fabric_DID (0xfffffe) from
1015 * the @vport's ndlp list. If no such ndlp found, it will create an ndlp and
1016 * put it into the @vport's ndlp list. If an inactive ndlp found on the list,
1017 * it will just be enabled and made active. The lpfc_issue_els_flogi() routine
1018 * is then invoked with the @vport and the ndlp to perform the FLOGI for the
1022 * 0 - failed to issue initial flogi for @vport
1023 * 1 - successfully issued initial flogi for @vport
1026 lpfc_initial_flogi(struct lpfc_vport *vport)
1028 struct lpfc_hba *phba = vport->phba;
1029 struct lpfc_nodelist *ndlp;
1031 vport->port_state = LPFC_FLOGI;
1032 lpfc_set_disctmo(vport);
1034 /* First look for the Fabric ndlp */
1035 ndlp = lpfc_findnode_did(vport, Fabric_DID);
1037 /* Cannot find existing Fabric ndlp, so allocate a new one */
1038 ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL);
1041 lpfc_nlp_init(vport, ndlp, Fabric_DID);
1042 /* Set the node type */
1043 ndlp->nlp_type |= NLP_FABRIC;
1044 /* Put ndlp onto node list */
1045 lpfc_enqueue_node(vport, ndlp);
1046 } else if (!NLP_CHK_NODE_ACT(ndlp)) {
1047 /* re-setup ndlp without removing from node list */
1048 ndlp = lpfc_enable_node(vport, ndlp, NLP_STE_UNUSED_NODE);
1053 if (lpfc_issue_els_flogi(vport, ndlp, 0))
1054 /* This decrement of reference count to node shall kick off
1055 * the release of the node.
1063 * lpfc_initial_fdisc - Issue an initial fabric discovery for a vport
1064 * @vport: pointer to a host virtual N_Port data structure.
1066 * This routine issues an initial Fabric Discover (FDISC) for the @vport
1067 * specified. It first searches the ndlp with the Fabric_DID (0xfffffe) from
1068 * the @vport's ndlp list. If no such ndlp found, it will create an ndlp and
1069 * put it into the @vport's ndlp list. If an inactive ndlp found on the list,
1070 * it will just be enabled and made active. The lpfc_issue_els_fdisc() routine
1071 * is then invoked with the @vport and the ndlp to perform the FDISC for the
1075 * 0 - failed to issue initial fdisc for @vport
1076 * 1 - successfully issued initial fdisc for @vport
1079 lpfc_initial_fdisc(struct lpfc_vport *vport)
1081 struct lpfc_hba *phba = vport->phba;
1082 struct lpfc_nodelist *ndlp;
1084 /* First look for the Fabric ndlp */
1085 ndlp = lpfc_findnode_did(vport, Fabric_DID);
1087 /* Cannot find existing Fabric ndlp, so allocate a new one */
1088 ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL);
1091 lpfc_nlp_init(vport, ndlp, Fabric_DID);
1092 /* Put ndlp onto node list */
1093 lpfc_enqueue_node(vport, ndlp);
1094 } else if (!NLP_CHK_NODE_ACT(ndlp)) {
1095 /* re-setup ndlp without removing from node list */
1096 ndlp = lpfc_enable_node(vport, ndlp, NLP_STE_UNUSED_NODE);
1101 if (lpfc_issue_els_fdisc(vport, ndlp, 0)) {
1102 /* decrement node reference count to trigger the release of
1112 * lpfc_more_plogi - Check and issue remaining plogis for a vport
1113 * @vport: pointer to a host virtual N_Port data structure.
1115 * This routine checks whether there are more remaining Port Logins
1116 * (PLOGI) to be issued for the @vport. If so, it will invoke the routine
1117 * lpfc_els_disc_plogi() to go through the Node Port Recovery (NPR) nodes
1118 * to issue ELS PLOGIs up to the configured discover threads with the
1119 * @vport (@vport->cfg_discovery_threads). The function also decrement
1120 * the @vport's num_disc_node by 1 if it is not already 0.
1123 lpfc_more_plogi(struct lpfc_vport *vport)
1127 if (vport->num_disc_nodes)
1128 vport->num_disc_nodes--;
1130 /* Continue discovery with <num_disc_nodes> PLOGIs to go */
1131 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
1132 "0232 Continue discovery with %d PLOGIs to go "
1133 "Data: x%x x%x x%x\n",
1134 vport->num_disc_nodes, vport->fc_plogi_cnt,
1135 vport->fc_flag, vport->port_state);
1136 /* Check to see if there are more PLOGIs to be sent */
1137 if (vport->fc_flag & FC_NLP_MORE)
1138 /* go thru NPR nodes and issue any remaining ELS PLOGIs */
1139 sentplogi = lpfc_els_disc_plogi(vport);
1145 * lpfc_plogi_confirm_nport - Confirm pologi wwpn matches stored ndlp
1146 * @phba: pointer to lpfc hba data structure.
1147 * @prsp: pointer to response IOCB payload.
1148 * @ndlp: pointer to a node-list data structure.
1150 * This routine checks and indicates whether the WWPN of an N_Port, retrieved
1151 * from a PLOGI, matches the WWPN that is stored in the @ndlp for that N_POrt.
1152 * The following cases are considered N_Port confirmed:
1153 * 1) The N_Port is a Fabric ndlp; 2) The @ndlp is on vport list and matches
1154 * the WWPN of the N_Port logged into; 3) The @ndlp is not on vport list but
1155 * it does not have WWPN assigned either. If the WWPN is confirmed, the
1156 * pointer to the @ndlp will be returned. If the WWPN is not confirmed:
1157 * 1) if there is a node on vport list other than the @ndlp with the same
1158 * WWPN of the N_Port PLOGI logged into, the lpfc_unreg_rpi() will be invoked
1159 * on that node to release the RPI associated with the node; 2) if there is
1160 * no node found on vport list with the same WWPN of the N_Port PLOGI logged
1161 * into, a new node shall be allocated (or activated). In either case, the
1162 * parameters of the @ndlp shall be copied to the new_ndlp, the @ndlp shall
1163 * be released and the new_ndlp shall be put on to the vport node list and
1164 * its pointer returned as the confirmed node.
1166 * Note that before the @ndlp got "released", the keepDID from not-matching
1167 * or inactive "new_ndlp" on the vport node list is assigned to the nlp_DID
1168 * of the @ndlp. This is because the release of @ndlp is actually to put it
1169 * into an inactive state on the vport node list and the vport node list
1170 * management algorithm does not allow two node with a same DID.
1173 * pointer to the PLOGI N_Port @ndlp
1175 static struct lpfc_nodelist *
1176 lpfc_plogi_confirm_nport(struct lpfc_hba *phba, uint32_t *prsp,
1177 struct lpfc_nodelist *ndlp)
1179 struct lpfc_vport *vport = ndlp->vport;
1180 struct lpfc_nodelist *new_ndlp;
1181 struct lpfc_rport_data *rdata;
1182 struct fc_rport *rport;
1183 struct serv_parm *sp;
1184 uint8_t name[sizeof(struct lpfc_name)];
1185 uint32_t rc, keepDID = 0;
1187 /* Fabric nodes can have the same WWPN so we don't bother searching
1188 * by WWPN. Just return the ndlp that was given to us.
1190 if (ndlp->nlp_type & NLP_FABRIC)
1193 sp = (struct serv_parm *) ((uint8_t *) prsp + sizeof(uint32_t));
1194 memset(name, 0, sizeof(struct lpfc_name));
1196 /* Now we find out if the NPort we are logging into, matches the WWPN
1197 * we have for that ndlp. If not, we have some work to do.
1199 new_ndlp = lpfc_findnode_wwpn(vport, &sp->portName);
1201 if (new_ndlp == ndlp && NLP_CHK_NODE_ACT(new_ndlp))
1205 rc = memcmp(&ndlp->nlp_portname, name,
1206 sizeof(struct lpfc_name));
1209 new_ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_ATOMIC);
1212 lpfc_nlp_init(vport, new_ndlp, ndlp->nlp_DID);
1213 } else if (!NLP_CHK_NODE_ACT(new_ndlp)) {
1214 rc = memcmp(&ndlp->nlp_portname, name,
1215 sizeof(struct lpfc_name));
1218 new_ndlp = lpfc_enable_node(vport, new_ndlp,
1219 NLP_STE_UNUSED_NODE);
1222 keepDID = new_ndlp->nlp_DID;
1224 keepDID = new_ndlp->nlp_DID;
1226 lpfc_unreg_rpi(vport, new_ndlp);
1227 new_ndlp->nlp_DID = ndlp->nlp_DID;
1228 new_ndlp->nlp_prev_state = ndlp->nlp_prev_state;
1230 if (ndlp->nlp_flag & NLP_NPR_2B_DISC)
1231 new_ndlp->nlp_flag |= NLP_NPR_2B_DISC;
1232 ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
1234 /* Set state will put new_ndlp on to node list if not already done */
1235 lpfc_nlp_set_state(vport, new_ndlp, ndlp->nlp_state);
1237 /* Move this back to NPR state */
1238 if (memcmp(&ndlp->nlp_portname, name, sizeof(struct lpfc_name)) == 0) {
1239 /* The new_ndlp is replacing ndlp totally, so we need
1240 * to put ndlp on UNUSED list and try to free it.
1243 /* Fix up the rport accordingly */
1244 rport = ndlp->rport;
1246 rdata = rport->dd_data;
1247 if (rdata->pnode == ndlp) {
1250 rdata->pnode = lpfc_nlp_get(new_ndlp);
1251 new_ndlp->rport = rport;
1253 new_ndlp->nlp_type = ndlp->nlp_type;
1255 /* We shall actually free the ndlp with both nlp_DID and
1256 * nlp_portname fields equals 0 to avoid any ndlp on the
1257 * nodelist never to be used.
1259 if (ndlp->nlp_DID == 0) {
1260 spin_lock_irq(&phba->ndlp_lock);
1261 NLP_SET_FREE_REQ(ndlp);
1262 spin_unlock_irq(&phba->ndlp_lock);
1265 /* Two ndlps cannot have the same did on the nodelist */
1266 ndlp->nlp_DID = keepDID;
1267 lpfc_drop_node(vport, ndlp);
1270 lpfc_unreg_rpi(vport, ndlp);
1271 /* Two ndlps cannot have the same did */
1272 ndlp->nlp_DID = keepDID;
1273 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1279 * lpfc_end_rscn - Check and handle more rscn for a vport
1280 * @vport: pointer to a host virtual N_Port data structure.
1282 * This routine checks whether more Registration State Change
1283 * Notifications (RSCNs) came in while the discovery state machine was in
1284 * the FC_RSCN_MODE. If so, the lpfc_els_handle_rscn() routine will be
1285 * invoked to handle the additional RSCNs for the @vport. Otherwise, the
1286 * FC_RSCN_MODE bit will be cleared with the @vport to mark as the end of
1287 * handling the RSCNs.
1290 lpfc_end_rscn(struct lpfc_vport *vport)
1292 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1294 if (vport->fc_flag & FC_RSCN_MODE) {
1296 * Check to see if more RSCNs came in while we were
1297 * processing this one.
1299 if (vport->fc_rscn_id_cnt ||
1300 (vport->fc_flag & FC_RSCN_DISCOVERY) != 0)
1301 lpfc_els_handle_rscn(vport);
1303 spin_lock_irq(shost->host_lock);
1304 vport->fc_flag &= ~FC_RSCN_MODE;
1305 spin_unlock_irq(shost->host_lock);
1311 * lpfc_cmpl_els_plogi - Completion callback function for plogi
1312 * @phba: pointer to lpfc hba data structure.
1313 * @cmdiocb: pointer to lpfc command iocb data structure.
1314 * @rspiocb: pointer to lpfc response iocb data structure.
1316 * This routine is the completion callback function for issuing the Port
1317 * Login (PLOGI) command. For PLOGI completion, there must be an active
1318 * ndlp on the vport node list that matches the remote node ID from the
1319 * PLOGI reponse IOCB. If such ndlp does not exist, the PLOGI is simply
1320 * ignored and command IOCB released. The PLOGI response IOCB status is
1321 * checked for error conditons. If there is error status reported, PLOGI
1322 * retry shall be attempted by invoking the lpfc_els_retry() routine.
1323 * Otherwise, the lpfc_plogi_confirm_nport() routine shall be invoked on
1324 * the ndlp and the NLP_EVT_CMPL_PLOGI state to the Discover State Machine
1325 * (DSM) is set for this PLOGI completion. Finally, it checks whether
1326 * there are additional N_Port nodes with the vport that need to perform
1327 * PLOGI. If so, the lpfc_more_plogi() routine is invoked to issue addition
1331 lpfc_cmpl_els_plogi(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
1332 struct lpfc_iocbq *rspiocb)
1334 struct lpfc_vport *vport = cmdiocb->vport;
1335 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1337 struct lpfc_nodelist *ndlp;
1338 struct lpfc_dmabuf *prsp;
1339 int disc, rc, did, type;
1341 /* we pass cmdiocb to state machine which needs rspiocb as well */
1342 cmdiocb->context_un.rsp_iocb = rspiocb;
1344 irsp = &rspiocb->iocb;
1345 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
1346 "PLOGI cmpl: status:x%x/x%x did:x%x",
1347 irsp->ulpStatus, irsp->un.ulpWord[4],
1348 irsp->un.elsreq64.remoteID);
1350 ndlp = lpfc_findnode_did(vport, irsp->un.elsreq64.remoteID);
1351 if (!ndlp || !NLP_CHK_NODE_ACT(ndlp)) {
1352 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1353 "0136 PLOGI completes to NPort x%x "
1354 "with no ndlp. Data: x%x x%x x%x\n",
1355 irsp->un.elsreq64.remoteID,
1356 irsp->ulpStatus, irsp->un.ulpWord[4],
1361 /* Since ndlp can be freed in the disc state machine, note if this node
1362 * is being used during discovery.
1364 spin_lock_irq(shost->host_lock);
1365 disc = (ndlp->nlp_flag & NLP_NPR_2B_DISC);
1366 ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
1367 spin_unlock_irq(shost->host_lock);
1370 /* PLOGI completes to NPort <nlp_DID> */
1371 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
1372 "0102 PLOGI completes to NPort x%x "
1373 "Data: x%x x%x x%x x%x x%x\n",
1374 ndlp->nlp_DID, irsp->ulpStatus, irsp->un.ulpWord[4],
1375 irsp->ulpTimeout, disc, vport->num_disc_nodes);
1376 /* Check to see if link went down during discovery */
1377 if (lpfc_els_chk_latt(vport)) {
1378 spin_lock_irq(shost->host_lock);
1379 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
1380 spin_unlock_irq(shost->host_lock);
1384 /* ndlp could be freed in DSM, save these values now */
1385 type = ndlp->nlp_type;
1386 did = ndlp->nlp_DID;
1388 if (irsp->ulpStatus) {
1389 /* Check for retry */
1390 if (lpfc_els_retry(phba, cmdiocb, rspiocb)) {
1391 /* ELS command is being retried */
1393 spin_lock_irq(shost->host_lock);
1394 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
1395 spin_unlock_irq(shost->host_lock);
1400 /* Do not call DSM for lpfc_els_abort'ed ELS cmds */
1401 if (lpfc_error_lost_link(irsp))
1402 rc = NLP_STE_FREED_NODE;
1404 rc = lpfc_disc_state_machine(vport, ndlp, cmdiocb,
1405 NLP_EVT_CMPL_PLOGI);
1407 /* Good status, call state machine */
1408 prsp = list_entry(((struct lpfc_dmabuf *)
1409 cmdiocb->context2)->list.next,
1410 struct lpfc_dmabuf, list);
1411 ndlp = lpfc_plogi_confirm_nport(phba, prsp->virt, ndlp);
1412 rc = lpfc_disc_state_machine(vport, ndlp, cmdiocb,
1413 NLP_EVT_CMPL_PLOGI);
1416 if (disc && vport->num_disc_nodes) {
1417 /* Check to see if there are more PLOGIs to be sent */
1418 lpfc_more_plogi(vport);
1420 if (vport->num_disc_nodes == 0) {
1421 spin_lock_irq(shost->host_lock);
1422 vport->fc_flag &= ~FC_NDISC_ACTIVE;
1423 spin_unlock_irq(shost->host_lock);
1425 lpfc_can_disctmo(vport);
1426 lpfc_end_rscn(vport);
1431 lpfc_els_free_iocb(phba, cmdiocb);
1436 * lpfc_issue_els_plogi - Issue an plogi iocb command for a vport
1437 * @vport: pointer to a host virtual N_Port data structure.
1438 * @did: destination port identifier.
1439 * @retry: number of retries to the command IOCB.
1441 * This routine issues a Port Login (PLOGI) command to a remote N_Port
1442 * (with the @did) for a @vport. Before issuing a PLOGI to a remote N_Port,
1443 * the ndlp with the remote N_Port DID must exist on the @vport's ndlp list.
1444 * This routine constructs the proper feilds of the PLOGI IOCB and invokes
1445 * the lpfc_sli_issue_iocb() routine to send out PLOGI ELS command.
1447 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
1448 * will be incremented by 1 for holding the ndlp and the reference to ndlp
1449 * will be stored into the context1 field of the IOCB for the completion
1450 * callback function to the PLOGI ELS command.
1453 * 0 - Successfully issued a plogi for @vport
1454 * 1 - failed to issue a plogi for @vport
1457 lpfc_issue_els_plogi(struct lpfc_vport *vport, uint32_t did, uint8_t retry)
1459 struct lpfc_hba *phba = vport->phba;
1460 struct serv_parm *sp;
1462 struct lpfc_nodelist *ndlp;
1463 struct lpfc_iocbq *elsiocb;
1464 struct lpfc_sli *psli;
1471 ndlp = lpfc_findnode_did(vport, did);
1472 if (ndlp && !NLP_CHK_NODE_ACT(ndlp))
1475 /* If ndlp is not NULL, we will bump the reference count on it */
1476 cmdsize = (sizeof(uint32_t) + sizeof(struct serv_parm));
1477 elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp, did,
1482 icmd = &elsiocb->iocb;
1483 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
1485 /* For PLOGI request, remainder of payload is service parameters */
1486 *((uint32_t *) (pcmd)) = ELS_CMD_PLOGI;
1487 pcmd += sizeof(uint32_t);
1488 memcpy(pcmd, &vport->fc_sparam, sizeof(struct serv_parm));
1489 sp = (struct serv_parm *) pcmd;
1491 if (sp->cmn.fcphLow < FC_PH_4_3)
1492 sp->cmn.fcphLow = FC_PH_4_3;
1494 if (sp->cmn.fcphHigh < FC_PH3)
1495 sp->cmn.fcphHigh = FC_PH3;
1497 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
1498 "Issue PLOGI: did:x%x",
1501 phba->fc_stat.elsXmitPLOGI++;
1502 elsiocb->iocb_cmpl = lpfc_cmpl_els_plogi;
1503 ret = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
1505 if (ret == IOCB_ERROR) {
1506 lpfc_els_free_iocb(phba, elsiocb);
1513 * lpfc_cmpl_els_prli - Completion callback function for prli
1514 * @phba: pointer to lpfc hba data structure.
1515 * @cmdiocb: pointer to lpfc command iocb data structure.
1516 * @rspiocb: pointer to lpfc response iocb data structure.
1518 * This routine is the completion callback function for a Process Login
1519 * (PRLI) ELS command. The PRLI response IOCB status is checked for error
1520 * status. If there is error status reported, PRLI retry shall be attempted
1521 * by invoking the lpfc_els_retry() routine. Otherwise, the state
1522 * NLP_EVT_CMPL_PRLI is sent to the Discover State Machine (DSM) for this
1523 * ndlp to mark the PRLI completion.
1526 lpfc_cmpl_els_prli(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
1527 struct lpfc_iocbq *rspiocb)
1529 struct lpfc_vport *vport = cmdiocb->vport;
1530 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1532 struct lpfc_sli *psli;
1533 struct lpfc_nodelist *ndlp;
1536 /* we pass cmdiocb to state machine which needs rspiocb as well */
1537 cmdiocb->context_un.rsp_iocb = rspiocb;
1539 irsp = &(rspiocb->iocb);
1540 ndlp = (struct lpfc_nodelist *) cmdiocb->context1;
1541 spin_lock_irq(shost->host_lock);
1542 ndlp->nlp_flag &= ~NLP_PRLI_SND;
1543 spin_unlock_irq(shost->host_lock);
1545 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
1546 "PRLI cmpl: status:x%x/x%x did:x%x",
1547 irsp->ulpStatus, irsp->un.ulpWord[4],
1549 /* PRLI completes to NPort <nlp_DID> */
1550 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
1551 "0103 PRLI completes to NPort x%x "
1552 "Data: x%x x%x x%x x%x\n",
1553 ndlp->nlp_DID, irsp->ulpStatus, irsp->un.ulpWord[4],
1554 irsp->ulpTimeout, vport->num_disc_nodes);
1556 vport->fc_prli_sent--;
1557 /* Check to see if link went down during discovery */
1558 if (lpfc_els_chk_latt(vport))
1561 if (irsp->ulpStatus) {
1562 /* Check for retry */
1563 if (lpfc_els_retry(phba, cmdiocb, rspiocb)) {
1564 /* ELS command is being retried */
1568 /* Do not call DSM for lpfc_els_abort'ed ELS cmds */
1569 if (lpfc_error_lost_link(irsp))
1572 lpfc_disc_state_machine(vport, ndlp, cmdiocb,
1575 /* Good status, call state machine */
1576 lpfc_disc_state_machine(vport, ndlp, cmdiocb,
1579 lpfc_els_free_iocb(phba, cmdiocb);
1584 * lpfc_issue_els_prli - Issue a prli iocb command for a vport
1585 * @vport: pointer to a host virtual N_Port data structure.
1586 * @ndlp: pointer to a node-list data structure.
1587 * @retry: number of retries to the command IOCB.
1589 * This routine issues a Process Login (PRLI) ELS command for the
1590 * @vport. The PRLI service parameters are set up in the payload of the
1591 * PRLI Request command and the pointer to lpfc_cmpl_els_prli() routine
1592 * is put to the IOCB completion callback func field before invoking the
1593 * routine lpfc_sli_issue_iocb() to send out PRLI command.
1595 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
1596 * will be incremented by 1 for holding the ndlp and the reference to ndlp
1597 * will be stored into the context1 field of the IOCB for the completion
1598 * callback function to the PRLI ELS command.
1601 * 0 - successfully issued prli iocb command for @vport
1602 * 1 - failed to issue prli iocb command for @vport
1605 lpfc_issue_els_prli(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1608 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1609 struct lpfc_hba *phba = vport->phba;
1612 struct lpfc_iocbq *elsiocb;
1616 cmdsize = (sizeof(uint32_t) + sizeof(PRLI));
1617 elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp,
1618 ndlp->nlp_DID, ELS_CMD_PRLI);
1622 icmd = &elsiocb->iocb;
1623 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
1625 /* For PRLI request, remainder of payload is service parameters */
1626 memset(pcmd, 0, (sizeof(PRLI) + sizeof(uint32_t)));
1627 *((uint32_t *) (pcmd)) = ELS_CMD_PRLI;
1628 pcmd += sizeof(uint32_t);
1630 /* For PRLI, remainder of payload is PRLI parameter page */
1631 npr = (PRLI *) pcmd;
1633 * If our firmware version is 3.20 or later,
1634 * set the following bits for FC-TAPE support.
1636 if (phba->vpd.rev.feaLevelHigh >= 0x02) {
1637 npr->ConfmComplAllowed = 1;
1639 npr->TaskRetryIdReq = 1;
1641 npr->estabImagePair = 1;
1642 npr->readXferRdyDis = 1;
1644 /* For FCP support */
1645 npr->prliType = PRLI_FCP_TYPE;
1646 npr->initiatorFunc = 1;
1648 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
1649 "Issue PRLI: did:x%x",
1650 ndlp->nlp_DID, 0, 0);
1652 phba->fc_stat.elsXmitPRLI++;
1653 elsiocb->iocb_cmpl = lpfc_cmpl_els_prli;
1654 spin_lock_irq(shost->host_lock);
1655 ndlp->nlp_flag |= NLP_PRLI_SND;
1656 spin_unlock_irq(shost->host_lock);
1657 if (lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0) ==
1659 spin_lock_irq(shost->host_lock);
1660 ndlp->nlp_flag &= ~NLP_PRLI_SND;
1661 spin_unlock_irq(shost->host_lock);
1662 lpfc_els_free_iocb(phba, elsiocb);
1665 vport->fc_prli_sent++;
1670 * lpfc_rscn_disc - Perform rscn discovery for a vport
1671 * @vport: pointer to a host virtual N_Port data structure.
1673 * This routine performs Registration State Change Notification (RSCN)
1674 * discovery for a @vport. If the @vport's node port recovery count is not
1675 * zero, it will invoke the lpfc_els_disc_plogi() to perform PLOGI for all
1676 * the nodes that need recovery. If none of the PLOGI were needed through
1677 * the lpfc_els_disc_plogi() routine, the lpfc_end_rscn() routine shall be
1678 * invoked to check and handle possible more RSCN came in during the period
1679 * of processing the current ones.
1682 lpfc_rscn_disc(struct lpfc_vport *vport)
1684 lpfc_can_disctmo(vport);
1686 /* RSCN discovery */
1687 /* go thru NPR nodes and issue ELS PLOGIs */
1688 if (vport->fc_npr_cnt)
1689 if (lpfc_els_disc_plogi(vport))
1692 lpfc_end_rscn(vport);
1696 * lpfc_adisc_done - Complete the adisc phase of discovery
1697 * @vport: pointer to lpfc_vport hba data structure that finished all ADISCs.
1699 * This function is called when the final ADISC is completed during discovery.
1700 * This function handles clearing link attention or issuing reg_vpi depending
1701 * on whether npiv is enabled. This function also kicks off the PLOGI phase of
1703 * This function is called with no locks held.
1706 lpfc_adisc_done(struct lpfc_vport *vport)
1708 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1709 struct lpfc_hba *phba = vport->phba;
1712 * For NPIV, cmpl_reg_vpi will set port_state to READY,
1713 * and continue discovery.
1715 if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
1716 !(vport->fc_flag & FC_RSCN_MODE) &&
1717 (phba->sli_rev < LPFC_SLI_REV4)) {
1718 lpfc_issue_reg_vpi(phba, vport);
1722 * For SLI2, we need to set port_state to READY
1723 * and continue discovery.
1725 if (vport->port_state < LPFC_VPORT_READY) {
1726 /* If we get here, there is nothing to ADISC */
1727 if (vport->port_type == LPFC_PHYSICAL_PORT)
1728 lpfc_issue_clear_la(phba, vport);
1729 if (!(vport->fc_flag & FC_ABORT_DISCOVERY)) {
1730 vport->num_disc_nodes = 0;
1731 /* go thru NPR list, issue ELS PLOGIs */
1732 if (vport->fc_npr_cnt)
1733 lpfc_els_disc_plogi(vport);
1734 if (!vport->num_disc_nodes) {
1735 spin_lock_irq(shost->host_lock);
1736 vport->fc_flag &= ~FC_NDISC_ACTIVE;
1737 spin_unlock_irq(shost->host_lock);
1738 lpfc_can_disctmo(vport);
1739 lpfc_end_rscn(vport);
1742 vport->port_state = LPFC_VPORT_READY;
1744 lpfc_rscn_disc(vport);
1748 * lpfc_more_adisc - Issue more adisc as needed
1749 * @vport: pointer to a host virtual N_Port data structure.
1751 * This routine determines whether there are more ndlps on a @vport
1752 * node list need to have Address Discover (ADISC) issued. If so, it will
1753 * invoke the lpfc_els_disc_adisc() routine to issue ADISC on the @vport's
1754 * remaining nodes which need to have ADISC sent.
1757 lpfc_more_adisc(struct lpfc_vport *vport)
1761 if (vport->num_disc_nodes)
1762 vport->num_disc_nodes--;
1763 /* Continue discovery with <num_disc_nodes> ADISCs to go */
1764 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
1765 "0210 Continue discovery with %d ADISCs to go "
1766 "Data: x%x x%x x%x\n",
1767 vport->num_disc_nodes, vport->fc_adisc_cnt,
1768 vport->fc_flag, vport->port_state);
1769 /* Check to see if there are more ADISCs to be sent */
1770 if (vport->fc_flag & FC_NLP_MORE) {
1771 lpfc_set_disctmo(vport);
1772 /* go thru NPR nodes and issue any remaining ELS ADISCs */
1773 sentadisc = lpfc_els_disc_adisc(vport);
1775 if (!vport->num_disc_nodes)
1776 lpfc_adisc_done(vport);
1781 * lpfc_cmpl_els_adisc - Completion callback function for adisc
1782 * @phba: pointer to lpfc hba data structure.
1783 * @cmdiocb: pointer to lpfc command iocb data structure.
1784 * @rspiocb: pointer to lpfc response iocb data structure.
1786 * This routine is the completion function for issuing the Address Discover
1787 * (ADISC) command. It first checks to see whether link went down during
1788 * the discovery process. If so, the node will be marked as node port
1789 * recovery for issuing discover IOCB by the link attention handler and
1790 * exit. Otherwise, the response status is checked. If error was reported
1791 * in the response status, the ADISC command shall be retried by invoking
1792 * the lpfc_els_retry() routine. Otherwise, if no error was reported in
1793 * the response status, the state machine is invoked to set transition
1794 * with respect to NLP_EVT_CMPL_ADISC event.
1797 lpfc_cmpl_els_adisc(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
1798 struct lpfc_iocbq *rspiocb)
1800 struct lpfc_vport *vport = cmdiocb->vport;
1801 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1803 struct lpfc_nodelist *ndlp;
1806 /* we pass cmdiocb to state machine which needs rspiocb as well */
1807 cmdiocb->context_un.rsp_iocb = rspiocb;
1809 irsp = &(rspiocb->iocb);
1810 ndlp = (struct lpfc_nodelist *) cmdiocb->context1;
1812 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
1813 "ADISC cmpl: status:x%x/x%x did:x%x",
1814 irsp->ulpStatus, irsp->un.ulpWord[4],
1817 /* Since ndlp can be freed in the disc state machine, note if this node
1818 * is being used during discovery.
1820 spin_lock_irq(shost->host_lock);
1821 disc = (ndlp->nlp_flag & NLP_NPR_2B_DISC);
1822 ndlp->nlp_flag &= ~(NLP_ADISC_SND | NLP_NPR_2B_DISC);
1823 spin_unlock_irq(shost->host_lock);
1824 /* ADISC completes to NPort <nlp_DID> */
1825 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
1826 "0104 ADISC completes to NPort x%x "
1827 "Data: x%x x%x x%x x%x x%x\n",
1828 ndlp->nlp_DID, irsp->ulpStatus, irsp->un.ulpWord[4],
1829 irsp->ulpTimeout, disc, vport->num_disc_nodes);
1830 /* Check to see if link went down during discovery */
1831 if (lpfc_els_chk_latt(vport)) {
1832 spin_lock_irq(shost->host_lock);
1833 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
1834 spin_unlock_irq(shost->host_lock);
1838 if (irsp->ulpStatus) {
1839 /* Check for retry */
1840 if (lpfc_els_retry(phba, cmdiocb, rspiocb)) {
1841 /* ELS command is being retried */
1843 spin_lock_irq(shost->host_lock);
1844 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
1845 spin_unlock_irq(shost->host_lock);
1846 lpfc_set_disctmo(vport);
1851 /* Do not call DSM for lpfc_els_abort'ed ELS cmds */
1852 if (!lpfc_error_lost_link(irsp))
1853 lpfc_disc_state_machine(vport, ndlp, cmdiocb,
1854 NLP_EVT_CMPL_ADISC);
1856 /* Good status, call state machine */
1857 lpfc_disc_state_machine(vport, ndlp, cmdiocb,
1858 NLP_EVT_CMPL_ADISC);
1860 /* Check to see if there are more ADISCs to be sent */
1861 if (disc && vport->num_disc_nodes)
1862 lpfc_more_adisc(vport);
1864 lpfc_els_free_iocb(phba, cmdiocb);
1869 * lpfc_issue_els_adisc - Issue an address discover iocb to an node on a vport
1870 * @vport: pointer to a virtual N_Port data structure.
1871 * @ndlp: pointer to a node-list data structure.
1872 * @retry: number of retries to the command IOCB.
1874 * This routine issues an Address Discover (ADISC) for an @ndlp on a
1875 * @vport. It prepares the payload of the ADISC ELS command, updates the
1876 * and states of the ndlp, and invokes the lpfc_sli_issue_iocb() routine
1877 * to issue the ADISC ELS command.
1879 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
1880 * will be incremented by 1 for holding the ndlp and the reference to ndlp
1881 * will be stored into the context1 field of the IOCB for the completion
1882 * callback function to the ADISC ELS command.
1885 * 0 - successfully issued adisc
1886 * 1 - failed to issue adisc
1889 lpfc_issue_els_adisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1892 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1893 struct lpfc_hba *phba = vport->phba;
1896 struct lpfc_iocbq *elsiocb;
1900 cmdsize = (sizeof(uint32_t) + sizeof(ADISC));
1901 elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp,
1902 ndlp->nlp_DID, ELS_CMD_ADISC);
1906 icmd = &elsiocb->iocb;
1907 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
1909 /* For ADISC request, remainder of payload is service parameters */
1910 *((uint32_t *) (pcmd)) = ELS_CMD_ADISC;
1911 pcmd += sizeof(uint32_t);
1913 /* Fill in ADISC payload */
1914 ap = (ADISC *) pcmd;
1915 ap->hardAL_PA = phba->fc_pref_ALPA;
1916 memcpy(&ap->portName, &vport->fc_portname, sizeof(struct lpfc_name));
1917 memcpy(&ap->nodeName, &vport->fc_nodename, sizeof(struct lpfc_name));
1918 ap->DID = be32_to_cpu(vport->fc_myDID);
1920 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
1921 "Issue ADISC: did:x%x",
1922 ndlp->nlp_DID, 0, 0);
1924 phba->fc_stat.elsXmitADISC++;
1925 elsiocb->iocb_cmpl = lpfc_cmpl_els_adisc;
1926 spin_lock_irq(shost->host_lock);
1927 ndlp->nlp_flag |= NLP_ADISC_SND;
1928 spin_unlock_irq(shost->host_lock);
1929 if (lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0) ==
1931 spin_lock_irq(shost->host_lock);
1932 ndlp->nlp_flag &= ~NLP_ADISC_SND;
1933 spin_unlock_irq(shost->host_lock);
1934 lpfc_els_free_iocb(phba, elsiocb);
1941 * lpfc_cmpl_els_logo - Completion callback function for logo
1942 * @phba: pointer to lpfc hba data structure.
1943 * @cmdiocb: pointer to lpfc command iocb data structure.
1944 * @rspiocb: pointer to lpfc response iocb data structure.
1946 * This routine is the completion function for issuing the ELS Logout (LOGO)
1947 * command. If no error status was reported from the LOGO response, the
1948 * state machine of the associated ndlp shall be invoked for transition with
1949 * respect to NLP_EVT_CMPL_LOGO event. Otherwise, if error status was reported,
1950 * the lpfc_els_retry() routine will be invoked to retry the LOGO command.
1953 lpfc_cmpl_els_logo(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
1954 struct lpfc_iocbq *rspiocb)
1956 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) cmdiocb->context1;
1957 struct lpfc_vport *vport = ndlp->vport;
1958 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1960 struct lpfc_sli *psli;
1963 /* we pass cmdiocb to state machine which needs rspiocb as well */
1964 cmdiocb->context_un.rsp_iocb = rspiocb;
1966 irsp = &(rspiocb->iocb);
1967 spin_lock_irq(shost->host_lock);
1968 ndlp->nlp_flag &= ~NLP_LOGO_SND;
1969 spin_unlock_irq(shost->host_lock);
1971 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
1972 "LOGO cmpl: status:x%x/x%x did:x%x",
1973 irsp->ulpStatus, irsp->un.ulpWord[4],
1975 /* LOGO completes to NPort <nlp_DID> */
1976 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
1977 "0105 LOGO completes to NPort x%x "
1978 "Data: x%x x%x x%x x%x\n",
1979 ndlp->nlp_DID, irsp->ulpStatus, irsp->un.ulpWord[4],
1980 irsp->ulpTimeout, vport->num_disc_nodes);
1981 /* Check to see if link went down during discovery */
1982 if (lpfc_els_chk_latt(vport))
1985 if (ndlp->nlp_flag & NLP_TARGET_REMOVE) {
1986 /* NLP_EVT_DEVICE_RM should unregister the RPI
1987 * which should abort all outstanding IOs.
1989 lpfc_disc_state_machine(vport, ndlp, cmdiocb,
1994 if (irsp->ulpStatus) {
1995 /* Check for retry */
1996 if (lpfc_els_retry(phba, cmdiocb, rspiocb))
1997 /* ELS command is being retried */
2000 /* Do not call DSM for lpfc_els_abort'ed ELS cmds */
2001 if (lpfc_error_lost_link(irsp))
2004 lpfc_disc_state_machine(vport, ndlp, cmdiocb,
2007 /* Good status, call state machine.
2008 * This will unregister the rpi if needed.
2010 lpfc_disc_state_machine(vport, ndlp, cmdiocb,
2013 lpfc_els_free_iocb(phba, cmdiocb);
2018 * lpfc_issue_els_logo - Issue a logo to an node on a vport
2019 * @vport: pointer to a virtual N_Port data structure.
2020 * @ndlp: pointer to a node-list data structure.
2021 * @retry: number of retries to the command IOCB.
2023 * This routine constructs and issues an ELS Logout (LOGO) iocb command
2024 * to a remote node, referred by an @ndlp on a @vport. It constructs the
2025 * payload of the IOCB, properly sets up the @ndlp state, and invokes the
2026 * lpfc_sli_issue_iocb() routine to send out the LOGO ELS command.
2028 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
2029 * will be incremented by 1 for holding the ndlp and the reference to ndlp
2030 * will be stored into the context1 field of the IOCB for the completion
2031 * callback function to the LOGO ELS command.
2034 * 0 - successfully issued logo
2035 * 1 - failed to issue logo
2038 lpfc_issue_els_logo(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2041 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2042 struct lpfc_hba *phba = vport->phba;
2044 struct lpfc_iocbq *elsiocb;
2049 spin_lock_irq(shost->host_lock);
2050 if (ndlp->nlp_flag & NLP_LOGO_SND) {
2051 spin_unlock_irq(shost->host_lock);
2054 spin_unlock_irq(shost->host_lock);
2056 cmdsize = (2 * sizeof(uint32_t)) + sizeof(struct lpfc_name);
2057 elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp,
2058 ndlp->nlp_DID, ELS_CMD_LOGO);
2062 icmd = &elsiocb->iocb;
2063 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
2064 *((uint32_t *) (pcmd)) = ELS_CMD_LOGO;
2065 pcmd += sizeof(uint32_t);
2067 /* Fill in LOGO payload */
2068 *((uint32_t *) (pcmd)) = be32_to_cpu(vport->fc_myDID);
2069 pcmd += sizeof(uint32_t);
2070 memcpy(pcmd, &vport->fc_portname, sizeof(struct lpfc_name));
2072 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
2073 "Issue LOGO: did:x%x",
2074 ndlp->nlp_DID, 0, 0);
2076 phba->fc_stat.elsXmitLOGO++;
2077 elsiocb->iocb_cmpl = lpfc_cmpl_els_logo;
2078 spin_lock_irq(shost->host_lock);
2079 ndlp->nlp_flag |= NLP_LOGO_SND;
2080 spin_unlock_irq(shost->host_lock);
2081 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
2083 if (rc == IOCB_ERROR) {
2084 spin_lock_irq(shost->host_lock);
2085 ndlp->nlp_flag &= ~NLP_LOGO_SND;
2086 spin_unlock_irq(shost->host_lock);
2087 lpfc_els_free_iocb(phba, elsiocb);
2094 * lpfc_cmpl_els_cmd - Completion callback function for generic els command
2095 * @phba: pointer to lpfc hba data structure.
2096 * @cmdiocb: pointer to lpfc command iocb data structure.
2097 * @rspiocb: pointer to lpfc response iocb data structure.
2099 * This routine is a generic completion callback function for ELS commands.
2100 * Specifically, it is the callback function which does not need to perform
2101 * any command specific operations. It is currently used by the ELS command
2102 * issuing routines for the ELS State Change Request (SCR),
2103 * lpfc_issue_els_scr(), and the ELS Fibre Channel Address Resolution
2104 * Protocol Response (FARPR) routine, lpfc_issue_els_farpr(). Other than
2105 * certain debug loggings, this callback function simply invokes the
2106 * lpfc_els_chk_latt() routine to check whether link went down during the
2107 * discovery process.
2110 lpfc_cmpl_els_cmd(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
2111 struct lpfc_iocbq *rspiocb)
2113 struct lpfc_vport *vport = cmdiocb->vport;
2116 irsp = &rspiocb->iocb;
2118 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
2119 "ELS cmd cmpl: status:x%x/x%x did:x%x",
2120 irsp->ulpStatus, irsp->un.ulpWord[4],
2121 irsp->un.elsreq64.remoteID);
2122 /* ELS cmd tag <ulpIoTag> completes */
2123 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
2124 "0106 ELS cmd tag x%x completes Data: x%x x%x x%x\n",
2125 irsp->ulpIoTag, irsp->ulpStatus,
2126 irsp->un.ulpWord[4], irsp->ulpTimeout);
2127 /* Check to see if link went down during discovery */
2128 lpfc_els_chk_latt(vport);
2129 lpfc_els_free_iocb(phba, cmdiocb);
2134 * lpfc_issue_els_scr - Issue a scr to an node on a vport
2135 * @vport: pointer to a host virtual N_Port data structure.
2136 * @nportid: N_Port identifier to the remote node.
2137 * @retry: number of retries to the command IOCB.
2139 * This routine issues a State Change Request (SCR) to a fabric node
2140 * on a @vport. The remote node @nportid is passed into the function. It
2141 * first search the @vport node list to find the matching ndlp. If no such
2142 * ndlp is found, a new ndlp shall be created for this (SCR) purpose. An
2143 * IOCB is allocated, payload prepared, and the lpfc_sli_issue_iocb()
2144 * routine is invoked to send the SCR IOCB.
2146 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
2147 * will be incremented by 1 for holding the ndlp and the reference to ndlp
2148 * will be stored into the context1 field of the IOCB for the completion
2149 * callback function to the SCR ELS command.
2152 * 0 - Successfully issued scr command
2153 * 1 - Failed to issue scr command
2156 lpfc_issue_els_scr(struct lpfc_vport *vport, uint32_t nportid, uint8_t retry)
2158 struct lpfc_hba *phba = vport->phba;
2160 struct lpfc_iocbq *elsiocb;
2161 struct lpfc_sli *psli;
2164 struct lpfc_nodelist *ndlp;
2167 cmdsize = (sizeof(uint32_t) + sizeof(SCR));
2169 ndlp = lpfc_findnode_did(vport, nportid);
2171 ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL);
2174 lpfc_nlp_init(vport, ndlp, nportid);
2175 lpfc_enqueue_node(vport, ndlp);
2176 } else if (!NLP_CHK_NODE_ACT(ndlp)) {
2177 ndlp = lpfc_enable_node(vport, ndlp, NLP_STE_UNUSED_NODE);
2182 elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp,
2183 ndlp->nlp_DID, ELS_CMD_SCR);
2186 /* This will trigger the release of the node just
2193 icmd = &elsiocb->iocb;
2194 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
2196 *((uint32_t *) (pcmd)) = ELS_CMD_SCR;
2197 pcmd += sizeof(uint32_t);
2199 /* For SCR, remainder of payload is SCR parameter page */
2200 memset(pcmd, 0, sizeof(SCR));
2201 ((SCR *) pcmd)->Function = SCR_FUNC_FULL;
2203 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
2204 "Issue SCR: did:x%x",
2205 ndlp->nlp_DID, 0, 0);
2207 phba->fc_stat.elsXmitSCR++;
2208 elsiocb->iocb_cmpl = lpfc_cmpl_els_cmd;
2209 if (lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0) ==
2211 /* The additional lpfc_nlp_put will cause the following
2212 * lpfc_els_free_iocb routine to trigger the rlease of
2216 lpfc_els_free_iocb(phba, elsiocb);
2219 /* This will cause the callback-function lpfc_cmpl_els_cmd to
2220 * trigger the release of node.
2227 * lpfc_issue_els_farpr - Issue a farp to an node on a vport
2228 * @vport: pointer to a host virtual N_Port data structure.
2229 * @nportid: N_Port identifier to the remote node.
2230 * @retry: number of retries to the command IOCB.
2232 * This routine issues a Fibre Channel Address Resolution Response
2233 * (FARPR) to a node on a vport. The remote node N_Port identifier (@nportid)
2234 * is passed into the function. It first search the @vport node list to find
2235 * the matching ndlp. If no such ndlp is found, a new ndlp shall be created
2236 * for this (FARPR) purpose. An IOCB is allocated, payload prepared, and the
2237 * lpfc_sli_issue_iocb() routine is invoked to send the FARPR ELS command.
2239 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
2240 * will be incremented by 1 for holding the ndlp and the reference to ndlp
2241 * will be stored into the context1 field of the IOCB for the completion
2242 * callback function to the PARPR ELS command.
2245 * 0 - Successfully issued farpr command
2246 * 1 - Failed to issue farpr command
2249 lpfc_issue_els_farpr(struct lpfc_vport *vport, uint32_t nportid, uint8_t retry)
2251 struct lpfc_hba *phba = vport->phba;
2253 struct lpfc_iocbq *elsiocb;
2254 struct lpfc_sli *psli;
2259 struct lpfc_nodelist *ondlp;
2260 struct lpfc_nodelist *ndlp;
2263 cmdsize = (sizeof(uint32_t) + sizeof(FARP));
2265 ndlp = lpfc_findnode_did(vport, nportid);
2267 ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL);
2270 lpfc_nlp_init(vport, ndlp, nportid);
2271 lpfc_enqueue_node(vport, ndlp);
2272 } else if (!NLP_CHK_NODE_ACT(ndlp)) {
2273 ndlp = lpfc_enable_node(vport, ndlp, NLP_STE_UNUSED_NODE);
2278 elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp,
2279 ndlp->nlp_DID, ELS_CMD_RNID);
2281 /* This will trigger the release of the node just
2288 icmd = &elsiocb->iocb;
2289 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
2291 *((uint32_t *) (pcmd)) = ELS_CMD_FARPR;
2292 pcmd += sizeof(uint32_t);
2294 /* Fill in FARPR payload */
2295 fp = (FARP *) (pcmd);
2296 memset(fp, 0, sizeof(FARP));
2297 lp = (uint32_t *) pcmd;
2298 *lp++ = be32_to_cpu(nportid);
2299 *lp++ = be32_to_cpu(vport->fc_myDID);
2301 fp->Mflags = (FARP_MATCH_PORT | FARP_MATCH_NODE);
2303 memcpy(&fp->RportName, &vport->fc_portname, sizeof(struct lpfc_name));
2304 memcpy(&fp->RnodeName, &vport->fc_nodename, sizeof(struct lpfc_name));
2305 ondlp = lpfc_findnode_did(vport, nportid);
2306 if (ondlp && NLP_CHK_NODE_ACT(ondlp)) {
2307 memcpy(&fp->OportName, &ondlp->nlp_portname,
2308 sizeof(struct lpfc_name));
2309 memcpy(&fp->OnodeName, &ondlp->nlp_nodename,
2310 sizeof(struct lpfc_name));
2313 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
2314 "Issue FARPR: did:x%x",
2315 ndlp->nlp_DID, 0, 0);
2317 phba->fc_stat.elsXmitFARPR++;
2318 elsiocb->iocb_cmpl = lpfc_cmpl_els_cmd;
2319 if (lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0) ==
2321 /* The additional lpfc_nlp_put will cause the following
2322 * lpfc_els_free_iocb routine to trigger the release of
2326 lpfc_els_free_iocb(phba, elsiocb);
2329 /* This will cause the callback-function lpfc_cmpl_els_cmd to
2330 * trigger the release of the node.
2337 * lpfc_cancel_retry_delay_tmo - Cancel the timer with delayed iocb-cmd retry
2338 * @vport: pointer to a host virtual N_Port data structure.
2339 * @nlp: pointer to a node-list data structure.
2341 * This routine cancels the timer with a delayed IOCB-command retry for
2342 * a @vport's @ndlp. It stops the timer for the delayed function retrial and
2343 * removes the ELS retry event if it presents. In addition, if the
2344 * NLP_NPR_2B_DISC bit is set in the @nlp's nlp_flag bitmap, ADISC IOCB
2345 * commands are sent for the @vport's nodes that require issuing discovery
2349 lpfc_cancel_retry_delay_tmo(struct lpfc_vport *vport, struct lpfc_nodelist *nlp)
2351 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2352 struct lpfc_work_evt *evtp;
2354 if (!(nlp->nlp_flag & NLP_DELAY_TMO))
2356 spin_lock_irq(shost->host_lock);
2357 nlp->nlp_flag &= ~NLP_DELAY_TMO;
2358 spin_unlock_irq(shost->host_lock);
2359 del_timer_sync(&nlp->nlp_delayfunc);
2360 nlp->nlp_last_elscmd = 0;
2361 if (!list_empty(&nlp->els_retry_evt.evt_listp)) {
2362 list_del_init(&nlp->els_retry_evt.evt_listp);
2363 /* Decrement nlp reference count held for the delayed retry */
2364 evtp = &nlp->els_retry_evt;
2365 lpfc_nlp_put((struct lpfc_nodelist *)evtp->evt_arg1);
2367 if (nlp->nlp_flag & NLP_NPR_2B_DISC) {
2368 spin_lock_irq(shost->host_lock);
2369 nlp->nlp_flag &= ~NLP_NPR_2B_DISC;
2370 spin_unlock_irq(shost->host_lock);
2371 if (vport->num_disc_nodes) {
2372 if (vport->port_state < LPFC_VPORT_READY) {
2373 /* Check if there are more ADISCs to be sent */
2374 lpfc_more_adisc(vport);
2376 /* Check if there are more PLOGIs to be sent */
2377 lpfc_more_plogi(vport);
2378 if (vport->num_disc_nodes == 0) {
2379 spin_lock_irq(shost->host_lock);
2380 vport->fc_flag &= ~FC_NDISC_ACTIVE;
2381 spin_unlock_irq(shost->host_lock);
2382 lpfc_can_disctmo(vport);
2383 lpfc_end_rscn(vport);
2392 * lpfc_els_retry_delay - Timer function with a ndlp delayed function timer
2393 * @ptr: holder for the pointer to the timer function associated data (ndlp).
2395 * This routine is invoked by the ndlp delayed-function timer to check
2396 * whether there is any pending ELS retry event(s) with the node. If not, it
2397 * simply returns. Otherwise, if there is at least one ELS delayed event, it
2398 * adds the delayed events to the HBA work list and invokes the
2399 * lpfc_worker_wake_up() routine to wake up worker thread to process the
2400 * event. Note that lpfc_nlp_get() is called before posting the event to
2401 * the work list to hold reference count of ndlp so that it guarantees the
2402 * reference to ndlp will still be available when the worker thread gets
2403 * to the event associated with the ndlp.
2406 lpfc_els_retry_delay(unsigned long ptr)
2408 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) ptr;
2409 struct lpfc_vport *vport = ndlp->vport;
2410 struct lpfc_hba *phba = vport->phba;
2411 unsigned long flags;
2412 struct lpfc_work_evt *evtp = &ndlp->els_retry_evt;
2414 spin_lock_irqsave(&phba->hbalock, flags);
2415 if (!list_empty(&evtp->evt_listp)) {
2416 spin_unlock_irqrestore(&phba->hbalock, flags);
2420 /* We need to hold the node by incrementing the reference
2421 * count until the queued work is done
2423 evtp->evt_arg1 = lpfc_nlp_get(ndlp);
2424 if (evtp->evt_arg1) {
2425 evtp->evt = LPFC_EVT_ELS_RETRY;
2426 list_add_tail(&evtp->evt_listp, &phba->work_list);
2427 lpfc_worker_wake_up(phba);
2429 spin_unlock_irqrestore(&phba->hbalock, flags);
2434 * lpfc_els_retry_delay_handler - Work thread handler for ndlp delayed function
2435 * @ndlp: pointer to a node-list data structure.
2437 * This routine is the worker-thread handler for processing the @ndlp delayed
2438 * event(s), posted by the lpfc_els_retry_delay() routine. It simply retrieves
2439 * the last ELS command from the associated ndlp and invokes the proper ELS
2440 * function according to the delayed ELS command to retry the command.
2443 lpfc_els_retry_delay_handler(struct lpfc_nodelist *ndlp)
2445 struct lpfc_vport *vport = ndlp->vport;
2446 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2447 uint32_t cmd, did, retry;
2449 spin_lock_irq(shost->host_lock);
2450 did = ndlp->nlp_DID;
2451 cmd = ndlp->nlp_last_elscmd;
2452 ndlp->nlp_last_elscmd = 0;
2454 if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
2455 spin_unlock_irq(shost->host_lock);
2459 ndlp->nlp_flag &= ~NLP_DELAY_TMO;
2460 spin_unlock_irq(shost->host_lock);
2462 * If a discovery event readded nlp_delayfunc after timer
2463 * firing and before processing the timer, cancel the
2466 del_timer_sync(&ndlp->nlp_delayfunc);
2467 retry = ndlp->nlp_retry;
2468 ndlp->nlp_retry = 0;
2472 lpfc_issue_els_flogi(vport, ndlp, retry);
2475 if (!lpfc_issue_els_plogi(vport, ndlp->nlp_DID, retry)) {
2476 ndlp->nlp_prev_state = ndlp->nlp_state;
2477 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
2481 if (!lpfc_issue_els_adisc(vport, ndlp, retry)) {
2482 ndlp->nlp_prev_state = ndlp->nlp_state;
2483 lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
2487 if (!lpfc_issue_els_prli(vport, ndlp, retry)) {
2488 ndlp->nlp_prev_state = ndlp->nlp_state;
2489 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PRLI_ISSUE);
2493 if (!lpfc_issue_els_logo(vport, ndlp, retry)) {
2494 ndlp->nlp_prev_state = ndlp->nlp_state;
2495 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2499 lpfc_issue_els_fdisc(vport, ndlp, retry);
2506 * lpfc_els_retry - Make retry decision on an els command iocb
2507 * @phba: pointer to lpfc hba data structure.
2508 * @cmdiocb: pointer to lpfc command iocb data structure.
2509 * @rspiocb: pointer to lpfc response iocb data structure.
2511 * This routine makes a retry decision on an ELS command IOCB, which has
2512 * failed. The following ELS IOCBs use this function for retrying the command
2513 * when previously issued command responsed with error status: FLOGI, PLOGI,
2514 * PRLI, ADISC, LOGO, and FDISC. Based on the ELS command type and the
2515 * returned error status, it makes the decision whether a retry shall be
2516 * issued for the command, and whether a retry shall be made immediately or
2517 * delayed. In the former case, the corresponding ELS command issuing-function
2518 * is called to retry the command. In the later case, the ELS command shall
2519 * be posted to the ndlp delayed event and delayed function timer set to the
2520 * ndlp for the delayed command issusing.
2523 * 0 - No retry of els command is made
2524 * 1 - Immediate or delayed retry of els command is made
2527 lpfc_els_retry(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
2528 struct lpfc_iocbq *rspiocb)
2530 struct lpfc_vport *vport = cmdiocb->vport;
2531 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2532 IOCB_t *irsp = &rspiocb->iocb;
2533 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) cmdiocb->context1;
2534 struct lpfc_dmabuf *pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
2537 int retry = 0, maxretry = lpfc_max_els_tries, delay = 0;
2543 /* Note: context2 may be 0 for internal driver abort
2544 * of delays ELS command.
2547 if (pcmd && pcmd->virt) {
2548 elscmd = (uint32_t *) (pcmd->virt);
2552 if (ndlp && NLP_CHK_NODE_ACT(ndlp))
2553 did = ndlp->nlp_DID;
2555 /* We should only hit this case for retrying PLOGI */
2556 did = irsp->un.elsreq64.remoteID;
2557 ndlp = lpfc_findnode_did(vport, did);
2558 if ((!ndlp || !NLP_CHK_NODE_ACT(ndlp))
2559 && (cmd != ELS_CMD_PLOGI))
2563 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
2564 "Retry ELS: wd7:x%x wd4:x%x did:x%x",
2565 *(((uint32_t *) irsp) + 7), irsp->un.ulpWord[4], ndlp->nlp_DID);
2567 switch (irsp->ulpStatus) {
2568 case IOSTAT_FCP_RSP_ERROR:
2569 case IOSTAT_REMOTE_STOP:
2572 case IOSTAT_LOCAL_REJECT:
2573 switch ((irsp->un.ulpWord[4] & 0xff)) {
2574 case IOERR_LOOP_OPEN_FAILURE:
2575 if (cmd == ELS_CMD_FLOGI) {
2576 if (PCI_DEVICE_ID_HORNET ==
2577 phba->pcidev->device) {
2578 phba->fc_topology = TOPOLOGY_LOOP;
2579 phba->pport->fc_myDID = 0;
2580 phba->alpa_map[0] = 0;
2581 phba->alpa_map[1] = 0;
2584 if (cmd == ELS_CMD_PLOGI && cmdiocb->retry == 0)
2589 case IOERR_ILLEGAL_COMMAND:
2590 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
2591 "0124 Retry illegal cmd x%x "
2592 "retry:x%x delay:x%x\n",
2593 cmd, cmdiocb->retry, delay);
2595 /* All command's retry policy */
2597 if (cmdiocb->retry > 2)
2601 case IOERR_NO_RESOURCES:
2602 logerr = 1; /* HBA out of resources */
2604 if (cmdiocb->retry > 100)
2609 case IOERR_ILLEGAL_FRAME:
2614 case IOERR_SEQUENCE_TIMEOUT:
2615 case IOERR_INVALID_RPI:
2621 case IOSTAT_NPORT_RJT:
2622 case IOSTAT_FABRIC_RJT:
2623 if (irsp->un.ulpWord[4] & RJT_UNAVAIL_TEMP) {
2629 case IOSTAT_NPORT_BSY:
2630 case IOSTAT_FABRIC_BSY:
2631 logerr = 1; /* Fabric / Remote NPort out of resources */
2636 stat.un.lsRjtError = be32_to_cpu(irsp->un.ulpWord[4]);
2637 /* Added for Vendor specifc support
2638 * Just keep retrying for these Rsn / Exp codes
2640 switch (stat.un.b.lsRjtRsnCode) {
2641 case LSRJT_UNABLE_TPC:
2642 if (stat.un.b.lsRjtRsnCodeExp ==
2643 LSEXP_CMD_IN_PROGRESS) {
2644 if (cmd == ELS_CMD_PLOGI) {
2651 if (cmd == ELS_CMD_PLOGI) {
2653 maxretry = lpfc_max_els_tries + 1;
2657 if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
2658 (cmd == ELS_CMD_FDISC) &&
2659 (stat.un.b.lsRjtRsnCodeExp == LSEXP_OUT_OF_RESOURCE)){
2660 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
2661 "0125 FDISC Failed (x%x). "
2662 "Fabric out of resources\n",
2663 stat.un.lsRjtError);
2664 lpfc_vport_set_state(vport,
2665 FC_VPORT_NO_FABRIC_RSCS);
2669 case LSRJT_LOGICAL_BSY:
2670 if ((cmd == ELS_CMD_PLOGI) ||
2671 (cmd == ELS_CMD_PRLI)) {
2674 } else if (cmd == ELS_CMD_FDISC) {
2675 /* FDISC retry policy */
2677 if (cmdiocb->retry >= 32)
2683 case LSRJT_LOGICAL_ERR:
2684 /* There are some cases where switches return this
2685 * error when they are not ready and should be returning
2686 * Logical Busy. We should delay every time.
2688 if (cmd == ELS_CMD_FDISC &&
2689 stat.un.b.lsRjtRsnCodeExp == LSEXP_PORT_LOGIN_REQ) {
2695 case LSRJT_PROTOCOL_ERR:
2696 if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
2697 (cmd == ELS_CMD_FDISC) &&
2698 ((stat.un.b.lsRjtRsnCodeExp == LSEXP_INVALID_PNAME) ||
2699 (stat.un.b.lsRjtRsnCodeExp == LSEXP_INVALID_NPORT_ID))
2701 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
2702 "0122 FDISC Failed (x%x). "
2703 "Fabric Detected Bad WWN\n",
2704 stat.un.lsRjtError);
2705 lpfc_vport_set_state(vport,
2706 FC_VPORT_FABRIC_REJ_WWN);
2712 case IOSTAT_INTERMED_RSP:
2720 if (did == FDMI_DID)
2723 if ((cmd == ELS_CMD_FLOGI) &&
2724 (phba->fc_topology != TOPOLOGY_LOOP) &&
2725 !lpfc_error_lost_link(irsp)) {
2726 /* FLOGI retry policy */
2730 if (cmdiocb->retry >= 100)
2732 else if (cmdiocb->retry >= 32)
2737 if (maxretry && (cmdiocb->retry >= maxretry)) {
2738 phba->fc_stat.elsRetryExceeded++;
2742 if ((vport->load_flag & FC_UNLOADING) != 0)
2747 /* Retry ELS command <elsCmd> to remote NPORT <did> */
2748 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
2749 "0107 Retry ELS command x%x to remote "
2750 "NPORT x%x Data: x%x x%x\n",
2751 cmd, did, cmdiocb->retry, delay);
2753 if (((cmd == ELS_CMD_PLOGI) || (cmd == ELS_CMD_ADISC)) &&
2754 ((irsp->ulpStatus != IOSTAT_LOCAL_REJECT) ||
2755 ((irsp->un.ulpWord[4] & 0xff) != IOERR_NO_RESOURCES))) {
2756 /* Don't reset timer for no resources */
2758 /* If discovery / RSCN timer is running, reset it */
2759 if (timer_pending(&vport->fc_disctmo) ||
2760 (vport->fc_flag & FC_RSCN_MODE))
2761 lpfc_set_disctmo(vport);
2764 phba->fc_stat.elsXmitRetry++;
2765 if (ndlp && NLP_CHK_NODE_ACT(ndlp) && delay) {
2766 phba->fc_stat.elsDelayRetry++;
2767 ndlp->nlp_retry = cmdiocb->retry;
2769 /* delay is specified in milliseconds */
2770 mod_timer(&ndlp->nlp_delayfunc,
2771 jiffies + msecs_to_jiffies(delay));
2772 spin_lock_irq(shost->host_lock);
2773 ndlp->nlp_flag |= NLP_DELAY_TMO;
2774 spin_unlock_irq(shost->host_lock);
2776 ndlp->nlp_prev_state = ndlp->nlp_state;
2777 if (cmd == ELS_CMD_PRLI)
2778 lpfc_nlp_set_state(vport, ndlp,
2779 NLP_STE_REG_LOGIN_ISSUE);
2781 lpfc_nlp_set_state(vport, ndlp,
2783 ndlp->nlp_last_elscmd = cmd;
2789 lpfc_issue_els_flogi(vport, ndlp, cmdiocb->retry);
2792 lpfc_issue_els_fdisc(vport, ndlp, cmdiocb->retry);
2795 if (ndlp && NLP_CHK_NODE_ACT(ndlp)) {
2796 ndlp->nlp_prev_state = ndlp->nlp_state;
2797 lpfc_nlp_set_state(vport, ndlp,
2798 NLP_STE_PLOGI_ISSUE);
2800 lpfc_issue_els_plogi(vport, did, cmdiocb->retry);
2803 ndlp->nlp_prev_state = ndlp->nlp_state;
2804 lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
2805 lpfc_issue_els_adisc(vport, ndlp, cmdiocb->retry);
2808 ndlp->nlp_prev_state = ndlp->nlp_state;
2809 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PRLI_ISSUE);
2810 lpfc_issue_els_prli(vport, ndlp, cmdiocb->retry);
2813 ndlp->nlp_prev_state = ndlp->nlp_state;
2814 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2815 lpfc_issue_els_logo(vport, ndlp, cmdiocb->retry);
2819 /* No retry ELS command <elsCmd> to remote NPORT <did> */
2821 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
2822 "0137 No retry ELS command x%x to remote "
2823 "NPORT x%x: Out of Resources: Error:x%x/%x\n",
2824 cmd, did, irsp->ulpStatus,
2825 irsp->un.ulpWord[4]);
2828 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
2829 "0108 No retry ELS command x%x to remote "
2830 "NPORT x%x Retried:%d Error:x%x/%x\n",
2831 cmd, did, cmdiocb->retry, irsp->ulpStatus,
2832 irsp->un.ulpWord[4]);
2838 * lpfc_els_free_data - Free lpfc dma buffer and data structure with an iocb
2839 * @phba: pointer to lpfc hba data structure.
2840 * @buf_ptr1: pointer to the lpfc DMA buffer data structure.
2842 * This routine releases the lpfc DMA (Direct Memory Access) buffer(s)
2843 * associated with a command IOCB back to the lpfc DMA buffer pool. It first
2844 * checks to see whether there is a lpfc DMA buffer associated with the
2845 * response of the command IOCB. If so, it will be released before releasing
2846 * the lpfc DMA buffer associated with the IOCB itself.
2849 * 0 - Successfully released lpfc DMA buffer (currently, always return 0)
2852 lpfc_els_free_data(struct lpfc_hba *phba, struct lpfc_dmabuf *buf_ptr1)
2854 struct lpfc_dmabuf *buf_ptr;
2856 /* Free the response before processing the command. */
2857 if (!list_empty(&buf_ptr1->list)) {
2858 list_remove_head(&buf_ptr1->list, buf_ptr,
2861 lpfc_mbuf_free(phba, buf_ptr->virt, buf_ptr->phys);
2864 lpfc_mbuf_free(phba, buf_ptr1->virt, buf_ptr1->phys);
2870 * lpfc_els_free_bpl - Free lpfc dma buffer and data structure with bpl
2871 * @phba: pointer to lpfc hba data structure.
2872 * @buf_ptr: pointer to the lpfc dma buffer data structure.
2874 * This routine releases the lpfc Direct Memory Access (DMA) buffer
2875 * associated with a Buffer Pointer List (BPL) back to the lpfc DMA buffer
2879 * 0 - Successfully released lpfc DMA buffer (currently, always return 0)
2882 lpfc_els_free_bpl(struct lpfc_hba *phba, struct lpfc_dmabuf *buf_ptr)
2884 lpfc_mbuf_free(phba, buf_ptr->virt, buf_ptr->phys);
2890 * lpfc_els_free_iocb - Free a command iocb and its associated resources
2891 * @phba: pointer to lpfc hba data structure.
2892 * @elsiocb: pointer to lpfc els command iocb data structure.
2894 * This routine frees a command IOCB and its associated resources. The
2895 * command IOCB data structure contains the reference to various associated
2896 * resources, these fields must be set to NULL if the associated reference
2898 * context1 - reference to ndlp
2899 * context2 - reference to cmd
2900 * context2->next - reference to rsp
2901 * context3 - reference to bpl
2903 * It first properly decrements the reference count held on ndlp for the
2904 * IOCB completion callback function. If LPFC_DELAY_MEM_FREE flag is not
2905 * set, it invokes the lpfc_els_free_data() routine to release the Direct
2906 * Memory Access (DMA) buffers associated with the IOCB. Otherwise, it
2907 * adds the DMA buffer the @phba data structure for the delayed release.
2908 * If reference to the Buffer Pointer List (BPL) is present, the
2909 * lpfc_els_free_bpl() routine is invoked to release the DMA memory
2910 * associated with BPL. Finally, the lpfc_sli_release_iocbq() routine is
2911 * invoked to release the IOCB data structure back to @phba IOCBQ list.
2914 * 0 - Success (currently, always return 0)
2917 lpfc_els_free_iocb(struct lpfc_hba *phba, struct lpfc_iocbq *elsiocb)
2919 struct lpfc_dmabuf *buf_ptr, *buf_ptr1;
2920 struct lpfc_nodelist *ndlp;
2922 ndlp = (struct lpfc_nodelist *)elsiocb->context1;
2924 if (ndlp->nlp_flag & NLP_DEFER_RM) {
2927 /* If the ndlp is not being used by another discovery
2930 if (!lpfc_nlp_not_used(ndlp)) {
2931 /* If ndlp is being used by another discovery
2932 * thread, just clear NLP_DEFER_RM
2934 ndlp->nlp_flag &= ~NLP_DEFER_RM;
2939 elsiocb->context1 = NULL;
2941 /* context2 = cmd, context2->next = rsp, context3 = bpl */
2942 if (elsiocb->context2) {
2943 if (elsiocb->iocb_flag & LPFC_DELAY_MEM_FREE) {
2944 /* Firmware could still be in progress of DMAing
2945 * payload, so don't free data buffer till after
2948 elsiocb->iocb_flag &= ~LPFC_DELAY_MEM_FREE;
2949 buf_ptr = elsiocb->context2;
2950 elsiocb->context2 = NULL;
2953 spin_lock_irq(&phba->hbalock);
2954 if (!list_empty(&buf_ptr->list)) {
2955 list_remove_head(&buf_ptr->list,
2956 buf_ptr1, struct lpfc_dmabuf,
2958 INIT_LIST_HEAD(&buf_ptr1->list);
2959 list_add_tail(&buf_ptr1->list,
2963 INIT_LIST_HEAD(&buf_ptr->list);
2964 list_add_tail(&buf_ptr->list, &phba->elsbuf);
2966 spin_unlock_irq(&phba->hbalock);
2969 buf_ptr1 = (struct lpfc_dmabuf *) elsiocb->context2;
2970 lpfc_els_free_data(phba, buf_ptr1);
2974 if (elsiocb->context3) {
2975 buf_ptr = (struct lpfc_dmabuf *) elsiocb->context3;
2976 lpfc_els_free_bpl(phba, buf_ptr);
2978 lpfc_sli_release_iocbq(phba, elsiocb);
2983 * lpfc_cmpl_els_logo_acc - Completion callback function to logo acc response
2984 * @phba: pointer to lpfc hba data structure.
2985 * @cmdiocb: pointer to lpfc command iocb data structure.
2986 * @rspiocb: pointer to lpfc response iocb data structure.
2988 * This routine is the completion callback function to the Logout (LOGO)
2989 * Accept (ACC) Response ELS command. This routine is invoked to indicate
2990 * the completion of the LOGO process. It invokes the lpfc_nlp_not_used() to
2991 * release the ndlp if it has the last reference remaining (reference count
2992 * is 1). If succeeded (meaning ndlp released), it sets the IOCB context1
2993 * field to NULL to inform the following lpfc_els_free_iocb() routine no
2994 * ndlp reference count needs to be decremented. Otherwise, the ndlp
2995 * reference use-count shall be decremented by the lpfc_els_free_iocb()
2996 * routine. Finally, the lpfc_els_free_iocb() is invoked to release the
2997 * IOCB data structure.
3000 lpfc_cmpl_els_logo_acc(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
3001 struct lpfc_iocbq *rspiocb)
3003 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) cmdiocb->context1;
3004 struct lpfc_vport *vport = cmdiocb->vport;
3007 irsp = &rspiocb->iocb;
3008 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
3009 "ACC LOGO cmpl: status:x%x/x%x did:x%x",
3010 irsp->ulpStatus, irsp->un.ulpWord[4], ndlp->nlp_DID);
3011 /* ACC to LOGO completes to NPort <nlp_DID> */
3012 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
3013 "0109 ACC to LOGO completes to NPort x%x "
3014 "Data: x%x x%x x%x\n",
3015 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
3018 if (ndlp->nlp_state == NLP_STE_NPR_NODE) {
3019 /* NPort Recovery mode or node is just allocated */
3020 if (!lpfc_nlp_not_used(ndlp)) {
3021 /* If the ndlp is being used by another discovery
3022 * thread, just unregister the RPI.
3024 lpfc_unreg_rpi(vport, ndlp);
3026 /* Indicate the node has already released, should
3027 * not reference to it from within lpfc_els_free_iocb.
3029 cmdiocb->context1 = NULL;
3032 lpfc_els_free_iocb(phba, cmdiocb);
3037 * lpfc_mbx_cmpl_dflt_rpi - Completion callbk func for unreg dflt rpi mbox cmd
3038 * @phba: pointer to lpfc hba data structure.
3039 * @pmb: pointer to the driver internal queue element for mailbox command.
3041 * This routine is the completion callback function for unregister default
3042 * RPI (Remote Port Index) mailbox command to the @phba. It simply releases
3043 * the associated lpfc Direct Memory Access (DMA) buffer back to the pool and
3044 * decrements the ndlp reference count held for this completion callback
3045 * function. After that, it invokes the lpfc_nlp_not_used() to check
3046 * whether there is only one reference left on the ndlp. If so, it will
3047 * perform one more decrement and trigger the release of the ndlp.
3050 lpfc_mbx_cmpl_dflt_rpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
3052 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
3053 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2;
3056 * This routine is used to register and unregister in previous SLI
3059 if ((pmb->u.mb.mbxCommand == MBX_UNREG_LOGIN) &&
3060 (phba->sli_rev == LPFC_SLI_REV4))
3061 lpfc_sli4_free_rpi(phba, pmb->u.mb.un.varUnregLogin.rpi);
3063 pmb->context1 = NULL;
3064 lpfc_mbuf_free(phba, mp->virt, mp->phys);
3066 mempool_free(pmb, phba->mbox_mem_pool);
3067 if (ndlp && NLP_CHK_NODE_ACT(ndlp)) {
3069 /* This is the end of the default RPI cleanup logic for this
3070 * ndlp. If no other discovery threads are using this ndlp.
3071 * we should free all resources associated with it.
3073 lpfc_nlp_not_used(ndlp);
3080 * lpfc_cmpl_els_rsp - Completion callback function for els response iocb cmd
3081 * @phba: pointer to lpfc hba data structure.
3082 * @cmdiocb: pointer to lpfc command iocb data structure.
3083 * @rspiocb: pointer to lpfc response iocb data structure.
3085 * This routine is the completion callback function for ELS Response IOCB
3086 * command. In normal case, this callback function just properly sets the
3087 * nlp_flag bitmap in the ndlp data structure, if the mbox command reference
3088 * field in the command IOCB is not NULL, the referred mailbox command will
3089 * be send out, and then invokes the lpfc_els_free_iocb() routine to release
3090 * the IOCB. Under error conditions, such as when a LS_RJT is returned or a
3091 * link down event occurred during the discovery, the lpfc_nlp_not_used()
3092 * routine shall be invoked trying to release the ndlp if no other threads
3093 * are currently referring it.
3096 lpfc_cmpl_els_rsp(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
3097 struct lpfc_iocbq *rspiocb)
3099 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) cmdiocb->context1;
3100 struct lpfc_vport *vport = ndlp ? ndlp->vport : NULL;
3101 struct Scsi_Host *shost = vport ? lpfc_shost_from_vport(vport) : NULL;
3104 LPFC_MBOXQ_t *mbox = NULL;
3105 struct lpfc_dmabuf *mp = NULL;
3106 uint32_t ls_rjt = 0;
3108 irsp = &rspiocb->iocb;
3110 if (cmdiocb->context_un.mbox)
3111 mbox = cmdiocb->context_un.mbox;
3113 /* First determine if this is a LS_RJT cmpl. Note, this callback
3114 * function can have cmdiocb->contest1 (ndlp) field set to NULL.
3116 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) cmdiocb->context2)->virt);
3117 if (ndlp && NLP_CHK_NODE_ACT(ndlp) &&
3118 (*((uint32_t *) (pcmd)) == ELS_CMD_LS_RJT)) {
3119 /* A LS_RJT associated with Default RPI cleanup has its own
3120 * seperate code path.
3122 if (!(ndlp->nlp_flag & NLP_RM_DFLT_RPI))
3126 /* Check to see if link went down during discovery */
3127 if (!ndlp || !NLP_CHK_NODE_ACT(ndlp) || lpfc_els_chk_latt(vport)) {
3129 mp = (struct lpfc_dmabuf *) mbox->context1;
3131 lpfc_mbuf_free(phba, mp->virt, mp->phys);
3134 mempool_free(mbox, phba->mbox_mem_pool);
3136 if (ndlp && NLP_CHK_NODE_ACT(ndlp) &&
3137 (ndlp->nlp_flag & NLP_RM_DFLT_RPI))
3138 if (lpfc_nlp_not_used(ndlp)) {
3140 /* Indicate the node has already released,
3141 * should not reference to it from within
3142 * the routine lpfc_els_free_iocb.
3144 cmdiocb->context1 = NULL;
3149 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
3150 "ELS rsp cmpl: status:x%x/x%x did:x%x",
3151 irsp->ulpStatus, irsp->un.ulpWord[4],
3152 cmdiocb->iocb.un.elsreq64.remoteID);
3153 /* ELS response tag <ulpIoTag> completes */
3154 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
3155 "0110 ELS response tag x%x completes "
3156 "Data: x%x x%x x%x x%x x%x x%x x%x\n",
3157 cmdiocb->iocb.ulpIoTag, rspiocb->iocb.ulpStatus,
3158 rspiocb->iocb.un.ulpWord[4], rspiocb->iocb.ulpTimeout,
3159 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
3162 if ((rspiocb->iocb.ulpStatus == 0)
3163 && (ndlp->nlp_flag & NLP_ACC_REGLOGIN)) {
3164 lpfc_unreg_rpi(vport, ndlp);
3165 /* Increment reference count to ndlp to hold the
3166 * reference to ndlp for the callback function.
3168 mbox->context2 = lpfc_nlp_get(ndlp);
3169 mbox->vport = vport;
3170 if (ndlp->nlp_flag & NLP_RM_DFLT_RPI) {
3171 mbox->mbox_flag |= LPFC_MBX_IMED_UNREG;
3172 mbox->mbox_cmpl = lpfc_mbx_cmpl_dflt_rpi;
3175 mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login;
3176 ndlp->nlp_prev_state = ndlp->nlp_state;
3177 lpfc_nlp_set_state(vport, ndlp,
3178 NLP_STE_REG_LOGIN_ISSUE);
3180 if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT)
3181 != MBX_NOT_FINISHED)
3184 /* Decrement the ndlp reference count we
3185 * set for this failed mailbox command.
3189 /* ELS rsp: Cannot issue reg_login for <NPortid> */
3190 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
3191 "0138 ELS rsp: Cannot issue reg_login for x%x "
3192 "Data: x%x x%x x%x\n",
3193 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
3196 if (lpfc_nlp_not_used(ndlp)) {
3198 /* Indicate node has already been released,
3199 * should not reference to it from within
3200 * the routine lpfc_els_free_iocb.
3202 cmdiocb->context1 = NULL;
3205 /* Do not drop node for lpfc_els_abort'ed ELS cmds */
3206 if (!lpfc_error_lost_link(irsp) &&
3207 ndlp->nlp_flag & NLP_ACC_REGLOGIN) {
3208 if (lpfc_nlp_not_used(ndlp)) {
3210 /* Indicate node has already been
3211 * released, should not reference
3212 * to it from within the routine
3213 * lpfc_els_free_iocb.
3215 cmdiocb->context1 = NULL;
3219 mp = (struct lpfc_dmabuf *) mbox->context1;
3221 lpfc_mbuf_free(phba, mp->virt, mp->phys);
3224 mempool_free(mbox, phba->mbox_mem_pool);
3227 if (ndlp && NLP_CHK_NODE_ACT(ndlp)) {
3228 spin_lock_irq(shost->host_lock);
3229 ndlp->nlp_flag &= ~(NLP_ACC_REGLOGIN | NLP_RM_DFLT_RPI);
3230 spin_unlock_irq(shost->host_lock);
3232 /* If the node is not being used by another discovery thread,
3233 * and we are sending a reject, we are done with it.
3234 * Release driver reference count here and free associated
3238 if (lpfc_nlp_not_used(ndlp))
3239 /* Indicate node has already been released,
3240 * should not reference to it from within
3241 * the routine lpfc_els_free_iocb.
3243 cmdiocb->context1 = NULL;
3246 lpfc_els_free_iocb(phba, cmdiocb);
3251 * lpfc_els_rsp_acc - Prepare and issue an acc response iocb command
3252 * @vport: pointer to a host virtual N_Port data structure.
3253 * @flag: the els command code to be accepted.
3254 * @oldiocb: pointer to the original lpfc command iocb data structure.
3255 * @ndlp: pointer to a node-list data structure.
3256 * @mbox: pointer to the driver internal queue element for mailbox command.
3258 * This routine prepares and issues an Accept (ACC) response IOCB
3259 * command. It uses the @flag to properly set up the IOCB field for the
3260 * specific ACC response command to be issued and invokes the
3261 * lpfc_sli_issue_iocb() routine to send out ACC response IOCB. If a
3262 * @mbox pointer is passed in, it will be put into the context_un.mbox
3263 * field of the IOCB for the completion callback function to issue the
3264 * mailbox command to the HBA later when callback is invoked.
3266 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
3267 * will be incremented by 1 for holding the ndlp and the reference to ndlp
3268 * will be stored into the context1 field of the IOCB for the completion
3269 * callback function to the corresponding response ELS IOCB command.
3272 * 0 - Successfully issued acc response
3273 * 1 - Failed to issue acc response
3276 lpfc_els_rsp_acc(struct lpfc_vport *vport, uint32_t flag,
3277 struct lpfc_iocbq *oldiocb, struct lpfc_nodelist *ndlp,
3280 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3281 struct lpfc_hba *phba = vport->phba;
3284 struct lpfc_iocbq *elsiocb;
3285 struct lpfc_sli *psli;
3289 ELS_PKT *els_pkt_ptr;
3292 oldcmd = &oldiocb->iocb;
3296 cmdsize = sizeof(uint32_t);
3297 elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry,
3298 ndlp, ndlp->nlp_DID, ELS_CMD_ACC);
3300 spin_lock_irq(shost->host_lock);
3301 ndlp->nlp_flag &= ~NLP_LOGO_ACC;
3302 spin_unlock_irq(shost->host_lock);
3306 icmd = &elsiocb->iocb;
3307 icmd->ulpContext = oldcmd->ulpContext; /* Xri */
3308 pcmd = (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
3309 *((uint32_t *) (pcmd)) = ELS_CMD_ACC;
3310 pcmd += sizeof(uint32_t);
3312 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
3313 "Issue ACC: did:x%x flg:x%x",
3314 ndlp->nlp_DID, ndlp->nlp_flag, 0);
3317 cmdsize = (sizeof(struct serv_parm) + sizeof(uint32_t));
3318 elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry,
3319 ndlp, ndlp->nlp_DID, ELS_CMD_ACC);
3323 icmd = &elsiocb->iocb;
3324 icmd->ulpContext = oldcmd->ulpContext; /* Xri */
3325 pcmd = (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
3328 elsiocb->context_un.mbox = mbox;
3330 *((uint32_t *) (pcmd)) = ELS_CMD_ACC;
3331 pcmd += sizeof(uint32_t);
3332 memcpy(pcmd, &vport->fc_sparam, sizeof(struct serv_parm));
3334 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
3335 "Issue ACC PLOGI: did:x%x flg:x%x",
3336 ndlp->nlp_DID, ndlp->nlp_flag, 0);
3339 cmdsize = sizeof(uint32_t) + sizeof(PRLO);
3340 elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry,
3341 ndlp, ndlp->nlp_DID, ELS_CMD_PRLO);
3345 icmd = &elsiocb->iocb;
3346 icmd->ulpContext = oldcmd->ulpContext; /* Xri */
3347 pcmd = (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
3349 memcpy(pcmd, ((struct lpfc_dmabuf *) oldiocb->context2)->virt,
3350 sizeof(uint32_t) + sizeof(PRLO));
3351 *((uint32_t *) (pcmd)) = ELS_CMD_PRLO_ACC;
3352 els_pkt_ptr = (ELS_PKT *) pcmd;
3353 els_pkt_ptr->un.prlo.acceptRspCode = PRLO_REQ_EXECUTED;
3355 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
3356 "Issue ACC PRLO: did:x%x flg:x%x",
3357 ndlp->nlp_DID, ndlp->nlp_flag, 0);
3362 /* Xmit ELS ACC response tag <ulpIoTag> */
3363 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
3364 "0128 Xmit ELS ACC response tag x%x, XRI: x%x, "
3365 "DID: x%x, nlp_flag: x%x nlp_state: x%x RPI: x%x\n",
3366 elsiocb->iotag, elsiocb->iocb.ulpContext,
3367 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
3369 if (ndlp->nlp_flag & NLP_LOGO_ACC) {
3370 spin_lock_irq(shost->host_lock);
3371 ndlp->nlp_flag &= ~NLP_LOGO_ACC;
3372 spin_unlock_irq(shost->host_lock);
3373 elsiocb->iocb_cmpl = lpfc_cmpl_els_logo_acc;
3375 elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp;
3378 phba->fc_stat.elsXmitACC++;
3379 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
3380 if (rc == IOCB_ERROR) {
3381 lpfc_els_free_iocb(phba, elsiocb);
3388 * lpfc_els_rsp_reject - Propare and issue a rjt response iocb command
3389 * @vport: pointer to a virtual N_Port data structure.
3391 * @oldiocb: pointer to the original lpfc command iocb data structure.
3392 * @ndlp: pointer to a node-list data structure.
3393 * @mbox: pointer to the driver internal queue element for mailbox command.
3395 * This routine prepares and issue an Reject (RJT) response IOCB
3396 * command. If a @mbox pointer is passed in, it will be put into the
3397 * context_un.mbox field of the IOCB for the completion callback function
3398 * to issue to the HBA later.
3400 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
3401 * will be incremented by 1 for holding the ndlp and the reference to ndlp
3402 * will be stored into the context1 field of the IOCB for the completion
3403 * callback function to the reject response ELS IOCB command.
3406 * 0 - Successfully issued reject response
3407 * 1 - Failed to issue reject response
3410 lpfc_els_rsp_reject(struct lpfc_vport *vport, uint32_t rejectError,
3411 struct lpfc_iocbq *oldiocb, struct lpfc_nodelist *ndlp,
3414 struct lpfc_hba *phba = vport->phba;
3417 struct lpfc_iocbq *elsiocb;
3418 struct lpfc_sli *psli;
3424 cmdsize = 2 * sizeof(uint32_t);
3425 elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp,
3426 ndlp->nlp_DID, ELS_CMD_LS_RJT);
3430 icmd = &elsiocb->iocb;
3431 oldcmd = &oldiocb->iocb;
3432 icmd->ulpContext = oldcmd->ulpContext; /* Xri */
3433 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
3435 *((uint32_t *) (pcmd)) = ELS_CMD_LS_RJT;
3436 pcmd += sizeof(uint32_t);
3437 *((uint32_t *) (pcmd)) = rejectError;
3440 elsiocb->context_un.mbox = mbox;
3442 /* Xmit ELS RJT <err> response tag <ulpIoTag> */
3443 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
3444 "0129 Xmit ELS RJT x%x response tag x%x "
3445 "xri x%x, did x%x, nlp_flag x%x, nlp_state x%x, "
3447 rejectError, elsiocb->iotag,
3448 elsiocb->iocb.ulpContext, ndlp->nlp_DID,
3449 ndlp->nlp_flag, ndlp->nlp_state, ndlp->nlp_rpi);
3450 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
3451 "Issue LS_RJT: did:x%x flg:x%x err:x%x",
3452 ndlp->nlp_DID, ndlp->nlp_flag, rejectError);
3454 phba->fc_stat.elsXmitLSRJT++;
3455 elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp;
3456 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
3458 if (rc == IOCB_ERROR) {
3459 lpfc_els_free_iocb(phba, elsiocb);
3466 * lpfc_els_rsp_adisc_acc - Prepare and issue acc response to adisc iocb cmd
3467 * @vport: pointer to a virtual N_Port data structure.
3468 * @oldiocb: pointer to the original lpfc command iocb data structure.
3469 * @ndlp: pointer to a node-list data structure.
3471 * This routine prepares and issues an Accept (ACC) response to Address
3472 * Discover (ADISC) ELS command. It simply prepares the payload of the IOCB
3473 * and invokes the lpfc_sli_issue_iocb() routine to send out the command.
3475 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
3476 * will be incremented by 1 for holding the ndlp and the reference to ndlp
3477 * will be stored into the context1 field of the IOCB for the completion
3478 * callback function to the ADISC Accept response ELS IOCB command.
3481 * 0 - Successfully issued acc adisc response
3482 * 1 - Failed to issue adisc acc response
3485 lpfc_els_rsp_adisc_acc(struct lpfc_vport *vport, struct lpfc_iocbq *oldiocb,
3486 struct lpfc_nodelist *ndlp)
3488 struct lpfc_hba *phba = vport->phba;
3490 IOCB_t *icmd, *oldcmd;
3491 struct lpfc_iocbq *elsiocb;
3496 cmdsize = sizeof(uint32_t) + sizeof(ADISC);
3497 elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp,
3498 ndlp->nlp_DID, ELS_CMD_ACC);
3502 icmd = &elsiocb->iocb;
3503 oldcmd = &oldiocb->iocb;
3504 icmd->ulpContext = oldcmd->ulpContext; /* Xri */
3506 /* Xmit ADISC ACC response tag <ulpIoTag> */
3507 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
3508 "0130 Xmit ADISC ACC response iotag x%x xri: "
3509 "x%x, did x%x, nlp_flag x%x, nlp_state x%x rpi x%x\n",
3510 elsiocb->iotag, elsiocb->iocb.ulpContext,
3511 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
3513 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
3515 *((uint32_t *) (pcmd)) = ELS_CMD_ACC;
3516 pcmd += sizeof(uint32_t);
3518 ap = (ADISC *) (pcmd);
3519 ap->hardAL_PA = phba->fc_pref_ALPA;
3520 memcpy(&ap->portName, &vport->fc_portname, sizeof(struct lpfc_name));
3521 memcpy(&ap->nodeName, &vport->fc_nodename, sizeof(struct lpfc_name));
3522 ap->DID = be32_to_cpu(vport->fc_myDID);
3524 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
3525 "Issue ACC ADISC: did:x%x flg:x%x",
3526 ndlp->nlp_DID, ndlp->nlp_flag, 0);
3528 phba->fc_stat.elsXmitACC++;
3529 elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp;
3530 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
3531 if (rc == IOCB_ERROR) {
3532 lpfc_els_free_iocb(phba, elsiocb);
3539 * lpfc_els_rsp_prli_acc - Prepare and issue acc response to prli iocb cmd
3540 * @vport: pointer to a virtual N_Port data structure.
3541 * @oldiocb: pointer to the original lpfc command iocb data structure.
3542 * @ndlp: pointer to a node-list data structure.
3544 * This routine prepares and issues an Accept (ACC) response to Process
3545 * Login (PRLI) ELS command. It simply prepares the payload of the IOCB
3546 * and invokes the lpfc_sli_issue_iocb() routine to send out the command.
3548 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
3549 * will be incremented by 1 for holding the ndlp and the reference to ndlp
3550 * will be stored into the context1 field of the IOCB for the completion
3551 * callback function to the PRLI Accept response ELS IOCB command.
3554 * 0 - Successfully issued acc prli response
3555 * 1 - Failed to issue acc prli response
3558 lpfc_els_rsp_prli_acc(struct lpfc_vport *vport, struct lpfc_iocbq *oldiocb,
3559 struct lpfc_nodelist *ndlp)
3561 struct lpfc_hba *phba = vport->phba;
3566 struct lpfc_iocbq *elsiocb;
3567 struct lpfc_sli *psli;
3574 cmdsize = sizeof(uint32_t) + sizeof(PRLI);
3575 elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp,
3576 ndlp->nlp_DID, (ELS_CMD_ACC | (ELS_CMD_PRLI & ~ELS_RSP_MASK)));
3580 icmd = &elsiocb->iocb;
3581 oldcmd = &oldiocb->iocb;
3582 icmd->ulpContext = oldcmd->ulpContext; /* Xri */
3583 /* Xmit PRLI ACC response tag <ulpIoTag> */
3584 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
3585 "0131 Xmit PRLI ACC response tag x%x xri x%x, "
3586 "did x%x, nlp_flag x%x, nlp_state x%x, rpi x%x\n",
3587 elsiocb->iotag, elsiocb->iocb.ulpContext,
3588 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
3590 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
3592 *((uint32_t *) (pcmd)) = (ELS_CMD_ACC | (ELS_CMD_PRLI & ~ELS_RSP_MASK));
3593 pcmd += sizeof(uint32_t);
3595 /* For PRLI, remainder of payload is PRLI parameter page */
3596 memset(pcmd, 0, sizeof(PRLI));
3598 npr = (PRLI *) pcmd;
3601 * If the remote port is a target and our firmware version is 3.20 or
3602 * later, set the following bits for FC-TAPE support.
3604 if ((ndlp->nlp_type & NLP_FCP_TARGET) &&
3605 (vpd->rev.feaLevelHigh >= 0x02)) {
3606 npr->ConfmComplAllowed = 1;
3608 npr->TaskRetryIdReq = 1;
3611 npr->acceptRspCode = PRLI_REQ_EXECUTED;
3612 npr->estabImagePair = 1;
3613 npr->readXferRdyDis = 1;
3614 npr->ConfmComplAllowed = 1;
3616 npr->prliType = PRLI_FCP_TYPE;
3617 npr->initiatorFunc = 1;
3619 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
3620 "Issue ACC PRLI: did:x%x flg:x%x",
3621 ndlp->nlp_DID, ndlp->nlp_flag, 0);
3623 phba->fc_stat.elsXmitACC++;
3624 elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp;
3626 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
3627 if (rc == IOCB_ERROR) {
3628 lpfc_els_free_iocb(phba, elsiocb);
3635 * lpfc_els_rsp_rnid_acc - Issue rnid acc response iocb command
3636 * @vport: pointer to a virtual N_Port data structure.
3637 * @format: rnid command format.
3638 * @oldiocb: pointer to the original lpfc command iocb data structure.
3639 * @ndlp: pointer to a node-list data structure.
3641 * This routine issues a Request Node Identification Data (RNID) Accept
3642 * (ACC) response. It constructs the RNID ACC response command according to
3643 * the proper @format and then calls the lpfc_sli_issue_iocb() routine to
3644 * issue the response. Note that this command does not need to hold the ndlp
3645 * reference count for the callback. So, the ndlp reference count taken by
3646 * the lpfc_prep_els_iocb() routine is put back and the context1 field of
3647 * IOCB is set to NULL to indicate to the lpfc_els_free_iocb() routine that
3648 * there is no ndlp reference available.
3650 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
3651 * will be incremented by 1 for holding the ndlp and the reference to ndlp
3652 * will be stored into the context1 field of the IOCB for the completion
3653 * callback function. However, for the RNID Accept Response ELS command,
3654 * this is undone later by this routine after the IOCB is allocated.
3657 * 0 - Successfully issued acc rnid response
3658 * 1 - Failed to issue acc rnid response
3661 lpfc_els_rsp_rnid_acc(struct lpfc_vport *vport, uint8_t format,
3662 struct lpfc_iocbq *oldiocb, struct lpfc_nodelist *ndlp)
3664 struct lpfc_hba *phba = vport->phba;
3666 IOCB_t *icmd, *oldcmd;
3667 struct lpfc_iocbq *elsiocb;
3668 struct lpfc_sli *psli;
3674 cmdsize = sizeof(uint32_t) + sizeof(uint32_t)
3675 + (2 * sizeof(struct lpfc_name));
3677 cmdsize += sizeof(RNID_TOP_DISC);
3679 elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp,
3680 ndlp->nlp_DID, ELS_CMD_ACC);
3684 icmd = &elsiocb->iocb;
3685 oldcmd = &oldiocb->iocb;
3686 icmd->ulpContext = oldcmd->ulpContext; /* Xri */
3687 /* Xmit RNID ACC response tag <ulpIoTag> */
3688 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
3689 "0132 Xmit RNID ACC response tag x%x xri x%x\n",
3690 elsiocb->iotag, elsiocb->iocb.ulpContext);
3691 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
3692 *((uint32_t *) (pcmd)) = ELS_CMD_ACC;
3693 pcmd += sizeof(uint32_t);
3695 memset(pcmd, 0, sizeof(RNID));
3696 rn = (RNID *) (pcmd);
3697 rn->Format = format;
3698 rn->CommonLen = (2 * sizeof(struct lpfc_name));
3699 memcpy(&rn->portName, &vport->fc_portname, sizeof(struct lpfc_name));
3700 memcpy(&rn->nodeName, &vport->fc_nodename, sizeof(struct lpfc_name));
3703 rn->SpecificLen = 0;
3705 case RNID_TOPOLOGY_DISC:
3706 rn->SpecificLen = sizeof(RNID_TOP_DISC);
3707 memcpy(&rn->un.topologyDisc.portName,
3708 &vport->fc_portname, sizeof(struct lpfc_name));
3709 rn->un.topologyDisc.unitType = RNID_HBA;
3710 rn->un.topologyDisc.physPort = 0;
3711 rn->un.topologyDisc.attachedNodes = 0;
3715 rn->SpecificLen = 0;
3719 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
3720 "Issue ACC RNID: did:x%x flg:x%x",
3721 ndlp->nlp_DID, ndlp->nlp_flag, 0);
3723 phba->fc_stat.elsXmitACC++;
3724 elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp;
3726 elsiocb->context1 = NULL; /* Don't need ndlp for cmpl,
3727 * it could be freed */
3729 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
3730 if (rc == IOCB_ERROR) {
3731 lpfc_els_free_iocb(phba, elsiocb);
3738 * lpfc_els_disc_adisc - Issue remaining adisc iocbs to npr nodes of a vport
3739 * @vport: pointer to a host virtual N_Port data structure.
3741 * This routine issues Address Discover (ADISC) ELS commands to those
3742 * N_Ports which are in node port recovery state and ADISC has not been issued
3743 * for the @vport. Each time an ELS ADISC IOCB is issued by invoking the
3744 * lpfc_issue_els_adisc() routine, the per @vport number of discover count
3745 * (num_disc_nodes) shall be incremented. If the num_disc_nodes reaches a
3746 * pre-configured threshold (cfg_discovery_threads), the @vport fc_flag will
3747 * be marked with FC_NLP_MORE bit and the process of issuing remaining ADISC
3748 * IOCBs quit for later pick up. On the other hand, after walking through
3749 * all the ndlps with the @vport and there is none ADISC IOCB issued, the
3750 * @vport fc_flag shall be cleared with FC_NLP_MORE bit indicating there is
3751 * no more ADISC need to be sent.
3754 * The number of N_Ports with adisc issued.
3757 lpfc_els_disc_adisc(struct lpfc_vport *vport)
3759 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3760 struct lpfc_nodelist *ndlp, *next_ndlp;
3763 /* go thru NPR nodes and issue any remaining ELS ADISCs */
3764 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) {
3765 if (!NLP_CHK_NODE_ACT(ndlp))
3767 if (ndlp->nlp_state == NLP_STE_NPR_NODE &&
3768 (ndlp->nlp_flag & NLP_NPR_2B_DISC) != 0 &&
3769 (ndlp->nlp_flag & NLP_NPR_ADISC) != 0) {
3770 spin_lock_irq(shost->host_lock);
3771 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
3772 spin_unlock_irq(shost->host_lock);
3773 ndlp->nlp_prev_state = ndlp->nlp_state;
3774 lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
3775 lpfc_issue_els_adisc(vport, ndlp, 0);
3777 vport->num_disc_nodes++;
3778 if (vport->num_disc_nodes >=
3779 vport->cfg_discovery_threads) {
3780 spin_lock_irq(shost->host_lock);
3781 vport->fc_flag |= FC_NLP_MORE;
3782 spin_unlock_irq(shost->host_lock);
3787 if (sentadisc == 0) {
3788 spin_lock_irq(shost->host_lock);
3789 vport->fc_flag &= ~FC_NLP_MORE;
3790 spin_unlock_irq(shost->host_lock);
3796 * lpfc_els_disc_plogi - Issue plogi for all npr nodes of a vport before adisc
3797 * @vport: pointer to a host virtual N_Port data structure.
3799 * This routine issues Port Login (PLOGI) ELS commands to all the N_Ports
3800 * which are in node port recovery state, with a @vport. Each time an ELS
3801 * ADISC PLOGI IOCB is issued by invoking the lpfc_issue_els_plogi() routine,
3802 * the per @vport number of discover count (num_disc_nodes) shall be
3803 * incremented. If the num_disc_nodes reaches a pre-configured threshold
3804 * (cfg_discovery_threads), the @vport fc_flag will be marked with FC_NLP_MORE
3805 * bit set and quit the process of issuing remaining ADISC PLOGIN IOCBs for
3806 * later pick up. On the other hand, after walking through all the ndlps with
3807 * the @vport and there is none ADISC PLOGI IOCB issued, the @vport fc_flag
3808 * shall be cleared with the FC_NLP_MORE bit indicating there is no more ADISC
3809 * PLOGI need to be sent.
3812 * The number of N_Ports with plogi issued.
3815 lpfc_els_disc_plogi(struct lpfc_vport *vport)
3817 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3818 struct lpfc_nodelist *ndlp, *next_ndlp;
3821 /* go thru NPR nodes and issue any remaining ELS PLOGIs */
3822 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) {
3823 if (!NLP_CHK_NODE_ACT(ndlp))
3825 if (ndlp->nlp_state == NLP_STE_NPR_NODE &&
3826 (ndlp->nlp_flag & NLP_NPR_2B_DISC) != 0 &&
3827 (ndlp->nlp_flag & NLP_DELAY_TMO) == 0 &&
3828 (ndlp->nlp_flag & NLP_NPR_ADISC) == 0) {
3829 ndlp->nlp_prev_state = ndlp->nlp_state;
3830 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
3831 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
3833 vport->num_disc_nodes++;
3834 if (vport->num_disc_nodes >=
3835 vport->cfg_discovery_threads) {
3836 spin_lock_irq(shost->host_lock);
3837 vport->fc_flag |= FC_NLP_MORE;
3838 spin_unlock_irq(shost->host_lock);
3844 lpfc_set_disctmo(vport);
3847 spin_lock_irq(shost->host_lock);
3848 vport->fc_flag &= ~FC_NLP_MORE;
3849 spin_unlock_irq(shost->host_lock);
3855 * lpfc_els_flush_rscn - Clean up any rscn activities with a vport
3856 * @vport: pointer to a host virtual N_Port data structure.
3858 * This routine cleans up any Registration State Change Notification
3859 * (RSCN) activity with a @vport. Note that the fc_rscn_flush flag of the
3860 * @vport together with the host_lock is used to prevent multiple thread
3861 * trying to access the RSCN array on a same @vport at the same time.
3864 lpfc_els_flush_rscn(struct lpfc_vport *vport)
3866 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3867 struct lpfc_hba *phba = vport->phba;
3870 spin_lock_irq(shost->host_lock);
3871 if (vport->fc_rscn_flush) {
3872 /* Another thread is walking fc_rscn_id_list on this vport */
3873 spin_unlock_irq(shost->host_lock);
3876 /* Indicate we are walking lpfc_els_flush_rscn on this vport */
3877 vport->fc_rscn_flush = 1;
3878 spin_unlock_irq(shost->host_lock);
3880 for (i = 0; i < vport->fc_rscn_id_cnt; i++) {
3881 lpfc_in_buf_free(phba, vport->fc_rscn_id_list[i]);
3882 vport->fc_rscn_id_list[i] = NULL;
3884 spin_lock_irq(shost->host_lock);
3885 vport->fc_rscn_id_cnt = 0;
3886 vport->fc_flag &= ~(FC_RSCN_MODE | FC_RSCN_DISCOVERY);
3887 spin_unlock_irq(shost->host_lock);
3888 lpfc_can_disctmo(vport);
3889 /* Indicate we are done walking this fc_rscn_id_list */
3890 vport->fc_rscn_flush = 0;
3894 * lpfc_rscn_payload_check - Check whether there is a pending rscn to a did
3895 * @vport: pointer to a host virtual N_Port data structure.
3896 * @did: remote destination port identifier.
3898 * This routine checks whether there is any pending Registration State
3899 * Configuration Notification (RSCN) to a @did on @vport.
3902 * None zero - The @did matched with a pending rscn
3903 * 0 - not able to match @did with a pending rscn
3906 lpfc_rscn_payload_check(struct lpfc_vport *vport, uint32_t did)
3911 uint32_t payload_len, i;
3912 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3914 ns_did.un.word = did;
3916 /* Never match fabric nodes for RSCNs */
3917 if ((did & Fabric_DID_MASK) == Fabric_DID_MASK)
3920 /* If we are doing a FULL RSCN rediscovery, match everything */
3921 if (vport->fc_flag & FC_RSCN_DISCOVERY)
3924 spin_lock_irq(shost->host_lock);
3925 if (vport->fc_rscn_flush) {
3926 /* Another thread is walking fc_rscn_id_list on this vport */
3927 spin_unlock_irq(shost->host_lock);
3930 /* Indicate we are walking fc_rscn_id_list on this vport */
3931 vport->fc_rscn_flush = 1;
3932 spin_unlock_irq(shost->host_lock);
3933 for (i = 0; i < vport->fc_rscn_id_cnt; i++) {
3934 lp = vport->fc_rscn_id_list[i]->virt;
3935 payload_len = be32_to_cpu(*lp++ & ~ELS_CMD_MASK);
3936 payload_len -= sizeof(uint32_t); /* take off word 0 */
3937 while (payload_len) {
3938 rscn_did.un.word = be32_to_cpu(*lp++);
3939 payload_len -= sizeof(uint32_t);
3940 switch (rscn_did.un.b.resv & RSCN_ADDRESS_FORMAT_MASK) {
3941 case RSCN_ADDRESS_FORMAT_PORT:
3942 if ((ns_did.un.b.domain == rscn_did.un.b.domain)
3943 && (ns_did.un.b.area == rscn_did.un.b.area)
3944 && (ns_did.un.b.id == rscn_did.un.b.id))
3945 goto return_did_out;
3947 case RSCN_ADDRESS_FORMAT_AREA:
3948 if ((ns_did.un.b.domain == rscn_did.un.b.domain)
3949 && (ns_did.un.b.area == rscn_did.un.b.area))
3950 goto return_did_out;
3952 case RSCN_ADDRESS_FORMAT_DOMAIN:
3953 if (ns_did.un.b.domain == rscn_did.un.b.domain)
3954 goto return_did_out;
3956 case RSCN_ADDRESS_FORMAT_FABRIC:
3957 goto return_did_out;
3961 /* Indicate we are done with walking fc_rscn_id_list on this vport */
3962 vport->fc_rscn_flush = 0;
3965 /* Indicate we are done with walking fc_rscn_id_list on this vport */
3966 vport->fc_rscn_flush = 0;
3971 * lpfc_rscn_recovery_check - Send recovery event to vport nodes matching rscn
3972 * @vport: pointer to a host virtual N_Port data structure.
3974 * This routine sends recovery (NLP_EVT_DEVICE_RECOVERY) event to the
3975 * state machine for a @vport's nodes that are with pending RSCN (Registration
3976 * State Change Notification).
3979 * 0 - Successful (currently alway return 0)
3982 lpfc_rscn_recovery_check(struct lpfc_vport *vport)
3984 struct lpfc_nodelist *ndlp = NULL;
3986 /* Move all affected nodes by pending RSCNs to NPR state. */
3987 list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
3988 if (!NLP_CHK_NODE_ACT(ndlp) ||
3989 (ndlp->nlp_state == NLP_STE_UNUSED_NODE) ||
3990 !lpfc_rscn_payload_check(vport, ndlp->nlp_DID))
3992 lpfc_disc_state_machine(vport, ndlp, NULL,
3993 NLP_EVT_DEVICE_RECOVERY);
3994 lpfc_cancel_retry_delay_tmo(vport, ndlp);
4000 * lpfc_send_rscn_event - Send an RSCN event to management application
4001 * @vport: pointer to a host virtual N_Port data structure.
4002 * @cmdiocb: pointer to lpfc command iocb data structure.
4004 * lpfc_send_rscn_event sends an RSCN netlink event to management
4008 lpfc_send_rscn_event(struct lpfc_vport *vport,
4009 struct lpfc_iocbq *cmdiocb)
4011 struct lpfc_dmabuf *pcmd;
4012 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4013 uint32_t *payload_ptr;
4014 uint32_t payload_len;
4015 struct lpfc_rscn_event_header *rscn_event_data;
4017 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
4018 payload_ptr = (uint32_t *) pcmd->virt;
4019 payload_len = be32_to_cpu(*payload_ptr & ~ELS_CMD_MASK);
4021 rscn_event_data = kmalloc(sizeof(struct lpfc_rscn_event_header) +
4022 payload_len, GFP_KERNEL);
4023 if (!rscn_event_data) {
4024 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
4025 "0147 Failed to allocate memory for RSCN event\n");
4028 rscn_event_data->event_type = FC_REG_RSCN_EVENT;
4029 rscn_event_data->payload_length = payload_len;
4030 memcpy(rscn_event_data->rscn_payload, payload_ptr,
4033 fc_host_post_vendor_event(shost,
4034 fc_get_event_number(),
4035 sizeof(struct lpfc_els_event_header) + payload_len,
4036 (char *)rscn_event_data,
4039 kfree(rscn_event_data);
4043 * lpfc_els_rcv_rscn - Process an unsolicited rscn iocb
4044 * @vport: pointer to a host virtual N_Port data structure.
4045 * @cmdiocb: pointer to lpfc command iocb data structure.
4046 * @ndlp: pointer to a node-list data structure.
4048 * This routine processes an unsolicited RSCN (Registration State Change
4049 * Notification) IOCB. First, the payload of the unsolicited RSCN is walked
4050 * to invoke fc_host_post_event() routine to the FC transport layer. If the
4051 * discover state machine is about to begin discovery, it just accepts the
4052 * RSCN and the discovery process will satisfy the RSCN. If this RSCN only
4053 * contains N_Port IDs for other vports on this HBA, it just accepts the
4054 * RSCN and ignore processing it. If the state machine is in the recovery
4055 * state, the fc_rscn_id_list of this @vport is walked and the
4056 * lpfc_rscn_recovery_check() routine is invoked to send recovery event for
4057 * all nodes that match RSCN payload. Otherwise, the lpfc_els_handle_rscn()
4058 * routine is invoked to handle the RSCN event.
4061 * 0 - Just sent the acc response
4062 * 1 - Sent the acc response and waited for name server completion
4065 lpfc_els_rcv_rscn(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
4066 struct lpfc_nodelist *ndlp)
4068 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4069 struct lpfc_hba *phba = vport->phba;
4070 struct lpfc_dmabuf *pcmd;
4071 uint32_t *lp, *datap;
4073 uint32_t payload_len, length, nportid, *cmd;
4075 int rscn_id = 0, hba_id = 0;
4078 icmd = &cmdiocb->iocb;
4079 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
4080 lp = (uint32_t *) pcmd->virt;
4082 payload_len = be32_to_cpu(*lp++ & ~ELS_CMD_MASK);
4083 payload_len -= sizeof(uint32_t); /* take off word 0 */
4085 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
4086 "0214 RSCN received Data: x%x x%x x%x x%x\n",
4087 vport->fc_flag, payload_len, *lp,
4088 vport->fc_rscn_id_cnt);
4090 /* Send an RSCN event to the management application */
4091 lpfc_send_rscn_event(vport, cmdiocb);
4093 for (i = 0; i < payload_len/sizeof(uint32_t); i++)
4094 fc_host_post_event(shost, fc_get_event_number(),
4095 FCH_EVT_RSCN, lp[i]);
4097 /* If we are about to begin discovery, just ACC the RSCN.
4098 * Discovery processing will satisfy it.
4100 if (vport->port_state <= LPFC_NS_QRY) {
4101 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
4102 "RCV RSCN ignore: did:x%x/ste:x%x flg:x%x",
4103 ndlp->nlp_DID, vport->port_state, ndlp->nlp_flag);
4105 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
4109 /* If this RSCN just contains NPortIDs for other vports on this HBA,
4110 * just ACC and ignore it.
4112 if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
4113 !(vport->cfg_peer_port_login)) {
4118 nportid = ((be32_to_cpu(nportid)) & Mask_DID);
4119 i -= sizeof(uint32_t);
4121 if (lpfc_find_vport_by_did(phba, nportid))
4124 if (rscn_id == hba_id) {
4125 /* ALL NPortIDs in RSCN are on HBA */
4126 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
4128 "Data: x%x x%x x%x x%x\n",
4129 vport->fc_flag, payload_len,
4130 *lp, vport->fc_rscn_id_cnt);
4131 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
4132 "RCV RSCN vport: did:x%x/ste:x%x flg:x%x",
4133 ndlp->nlp_DID, vport->port_state,
4136 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb,
4142 spin_lock_irq(shost->host_lock);
4143 if (vport->fc_rscn_flush) {
4144 /* Another thread is walking fc_rscn_id_list on this vport */
4145 spin_unlock_irq(shost->host_lock);
4146 vport->fc_flag |= FC_RSCN_DISCOVERY;
4148 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
4151 /* Indicate we are walking fc_rscn_id_list on this vport */
4152 vport->fc_rscn_flush = 1;
4153 spin_unlock_irq(shost->host_lock);
4154 /* Get the array count after sucessfully have the token */
4155 rscn_cnt = vport->fc_rscn_id_cnt;
4156 /* If we are already processing an RSCN, save the received
4157 * RSCN payload buffer, cmdiocb->context2 to process later.
4159 if (vport->fc_flag & (FC_RSCN_MODE | FC_NDISC_ACTIVE)) {
4160 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
4161 "RCV RSCN defer: did:x%x/ste:x%x flg:x%x",
4162 ndlp->nlp_DID, vport->port_state, ndlp->nlp_flag);
4164 spin_lock_irq(shost->host_lock);
4165 vport->fc_flag |= FC_RSCN_DEFERRED;
4166 if ((rscn_cnt < FC_MAX_HOLD_RSCN) &&
4167 !(vport->fc_flag & FC_RSCN_DISCOVERY)) {
4168 vport->fc_flag |= FC_RSCN_MODE;
4169 spin_unlock_irq(shost->host_lock);
4171 cmd = vport->fc_rscn_id_list[rscn_cnt-1]->virt;
4172 length = be32_to_cpu(*cmd & ~ELS_CMD_MASK);
4175 (payload_len + length <= LPFC_BPL_SIZE)) {
4176 *cmd &= ELS_CMD_MASK;
4177 *cmd |= cpu_to_be32(payload_len + length);
4178 memcpy(((uint8_t *)cmd) + length, lp,
4181 vport->fc_rscn_id_list[rscn_cnt] = pcmd;
4182 vport->fc_rscn_id_cnt++;
4183 /* If we zero, cmdiocb->context2, the calling
4184 * routine will not try to free it.
4186 cmdiocb->context2 = NULL;
4189 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
4190 "0235 Deferred RSCN "
4191 "Data: x%x x%x x%x\n",
4192 vport->fc_rscn_id_cnt, vport->fc_flag,
4195 vport->fc_flag |= FC_RSCN_DISCOVERY;
4196 spin_unlock_irq(shost->host_lock);
4197 /* ReDiscovery RSCN */
4198 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
4199 "0234 ReDiscovery RSCN "
4200 "Data: x%x x%x x%x\n",
4201 vport->fc_rscn_id_cnt, vport->fc_flag,
4204 /* Indicate we are done walking fc_rscn_id_list on this vport */
4205 vport->fc_rscn_flush = 0;
4207 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
4208 /* send RECOVERY event for ALL nodes that match RSCN payload */
4209 lpfc_rscn_recovery_check(vport);
4210 spin_lock_irq(shost->host_lock);
4211 vport->fc_flag &= ~FC_RSCN_DEFERRED;
4212 spin_unlock_irq(shost->host_lock);
4215 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
4216 "RCV RSCN: did:x%x/ste:x%x flg:x%x",
4217 ndlp->nlp_DID, vport->port_state, ndlp->nlp_flag);
4219 spin_lock_irq(shost->host_lock);
4220 vport->fc_flag |= FC_RSCN_MODE;
4221 spin_unlock_irq(shost->host_lock);
4222 vport->fc_rscn_id_list[vport->fc_rscn_id_cnt++] = pcmd;
4223 /* Indicate we are done walking fc_rscn_id_list on this vport */
4224 vport->fc_rscn_flush = 0;
4226 * If we zero, cmdiocb->context2, the calling routine will
4227 * not try to free it.
4229 cmdiocb->context2 = NULL;
4230 lpfc_set_disctmo(vport);
4232 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
4233 /* send RECOVERY event for ALL nodes that match RSCN payload */
4234 lpfc_rscn_recovery_check(vport);
4235 return lpfc_els_handle_rscn(vport);
4239 * lpfc_els_handle_rscn - Handle rscn for a vport
4240 * @vport: pointer to a host virtual N_Port data structure.
4242 * This routine handles the Registration State Configuration Notification
4243 * (RSCN) for a @vport. If login to NameServer does not exist, a new ndlp shall
4244 * be created and a Port Login (PLOGI) to the NameServer is issued. Otherwise,
4245 * if the ndlp to NameServer exists, a Common Transport (CT) command to the
4246 * NameServer shall be issued. If CT command to the NameServer fails to be
4247 * issued, the lpfc_els_flush_rscn() routine shall be invoked to clean up any
4248 * RSCN activities with the @vport.
4251 * 0 - Cleaned up rscn on the @vport
4252 * 1 - Wait for plogi to name server before proceed
4255 lpfc_els_handle_rscn(struct lpfc_vport *vport)
4257 struct lpfc_nodelist *ndlp;
4258 struct lpfc_hba *phba = vport->phba;
4260 /* Ignore RSCN if the port is being torn down. */
4261 if (vport->load_flag & FC_UNLOADING) {
4262 lpfc_els_flush_rscn(vport);
4266 /* Start timer for RSCN processing */
4267 lpfc_set_disctmo(vport);
4269 /* RSCN processed */
4270 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
4271 "0215 RSCN processed Data: x%x x%x x%x x%x\n",
4272 vport->fc_flag, 0, vport->fc_rscn_id_cnt,
4275 /* To process RSCN, first compare RSCN data with NameServer */
4276 vport->fc_ns_retry = 0;
4277 vport->num_disc_nodes = 0;
4279 ndlp = lpfc_findnode_did(vport, NameServer_DID);
4280 if (ndlp && NLP_CHK_NODE_ACT(ndlp)
4281 && ndlp->nlp_state == NLP_STE_UNMAPPED_NODE) {
4282 /* Good ndlp, issue CT Request to NameServer */
4283 if (lpfc_ns_cmd(vport, SLI_CTNS_GID_FT, 0, 0) == 0)
4284 /* Wait for NameServer query cmpl before we can
4288 /* If login to NameServer does not exist, issue one */
4289 /* Good status, issue PLOGI to NameServer */
4290 ndlp = lpfc_findnode_did(vport, NameServer_DID);
4291 if (ndlp && NLP_CHK_NODE_ACT(ndlp))
4292 /* Wait for NameServer login cmpl before we can
4297 ndlp = lpfc_enable_node(vport, ndlp,
4298 NLP_STE_PLOGI_ISSUE);
4300 lpfc_els_flush_rscn(vport);
4303 ndlp->nlp_prev_state = NLP_STE_UNUSED_NODE;
4305 ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL);
4307 lpfc_els_flush_rscn(vport);
4310 lpfc_nlp_init(vport, ndlp, NameServer_DID);
4311 ndlp->nlp_prev_state = ndlp->nlp_state;
4312 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
4314 ndlp->nlp_type |= NLP_FABRIC;
4315 lpfc_issue_els_plogi(vport, NameServer_DID, 0);
4316 /* Wait for NameServer login cmpl before we can
4322 lpfc_els_flush_rscn(vport);
4327 * lpfc_els_rcv_flogi - Process an unsolicited flogi iocb
4328 * @vport: pointer to a host virtual N_Port data structure.
4329 * @cmdiocb: pointer to lpfc command iocb data structure.
4330 * @ndlp: pointer to a node-list data structure.
4332 * This routine processes Fabric Login (FLOGI) IOCB received as an ELS
4333 * unsolicited event. An unsolicited FLOGI can be received in a point-to-
4334 * point topology. As an unsolicited FLOGI should not be received in a loop
4335 * mode, any unsolicited FLOGI received in loop mode shall be ignored. The
4336 * lpfc_check_sparm() routine is invoked to check the parameters in the
4337 * unsolicited FLOGI. If parameters validation failed, the routine
4338 * lpfc_els_rsp_reject() shall be called with reject reason code set to
4339 * LSEXP_SPARM_OPTIONS to reject the FLOGI. Otherwise, the Port WWN in the
4340 * FLOGI shall be compared with the Port WWN of the @vport to determine who
4341 * will initiate PLOGI. The higher lexicographical value party shall has
4342 * higher priority (as the winning port) and will initiate PLOGI and
4343 * communicate Port_IDs (Addresses) for both nodes in PLOGI. The result
4344 * of this will be marked in the @vport fc_flag field with FC_PT2PT_PLOGI
4345 * and then the lpfc_els_rsp_acc() routine is invoked to accept the FLOGI.
4348 * 0 - Successfully processed the unsolicited flogi
4349 * 1 - Failed to process the unsolicited flogi
4352 lpfc_els_rcv_flogi(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
4353 struct lpfc_nodelist *ndlp)
4355 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4356 struct lpfc_hba *phba = vport->phba;
4357 struct lpfc_dmabuf *pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
4358 uint32_t *lp = (uint32_t *) pcmd->virt;
4359 IOCB_t *icmd = &cmdiocb->iocb;
4360 struct serv_parm *sp;
4367 sp = (struct serv_parm *) lp;
4369 /* FLOGI received */
4371 lpfc_set_disctmo(vport);
4373 if (phba->fc_topology == TOPOLOGY_LOOP) {
4374 /* We should never receive a FLOGI in loop mode, ignore it */
4375 did = icmd->un.elsreq64.remoteID;
4377 /* An FLOGI ELS command <elsCmd> was received from DID <did> in
4379 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
4380 "0113 An FLOGI ELS command x%x was "
4381 "received from DID x%x in Loop Mode\n",
4388 if ((lpfc_check_sparm(vport, ndlp, sp, CLASS3))) {
4389 /* For a FLOGI we accept, then if our portname is greater
4390 * then the remote portname we initiate Nport login.
4393 rc = memcmp(&vport->fc_portname, &sp->portName,
4394 sizeof(struct lpfc_name));
4397 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
4401 lpfc_linkdown(phba);
4402 lpfc_init_link(phba, mbox,
4404 phba->cfg_link_speed);
4405 mbox->u.mb.un.varInitLnk.lipsr_AL_PA = 0;
4406 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
4407 mbox->vport = vport;
4408 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
4409 lpfc_set_loopback_flag(phba);
4410 if (rc == MBX_NOT_FINISHED) {
4411 mempool_free(mbox, phba->mbox_mem_pool);
4414 } else if (rc > 0) { /* greater than */
4415 spin_lock_irq(shost->host_lock);
4416 vport->fc_flag |= FC_PT2PT_PLOGI;
4417 spin_unlock_irq(shost->host_lock);
4419 spin_lock_irq(shost->host_lock);
4420 vport->fc_flag |= FC_PT2PT;
4421 vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
4422 spin_unlock_irq(shost->host_lock);
4424 /* Reject this request because invalid parameters */
4425 stat.un.b.lsRjtRsvd0 = 0;
4426 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
4427 stat.un.b.lsRjtRsnCodeExp = LSEXP_SPARM_OPTIONS;
4428 stat.un.b.vendorUnique = 0;
4429 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
4435 lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb, ndlp, NULL);
4441 * lpfc_els_rcv_rnid - Process an unsolicited rnid iocb
4442 * @vport: pointer to a host virtual N_Port data structure.
4443 * @cmdiocb: pointer to lpfc command iocb data structure.
4444 * @ndlp: pointer to a node-list data structure.
4446 * This routine processes Request Node Identification Data (RNID) IOCB
4447 * received as an ELS unsolicited event. Only when the RNID specified format
4448 * 0x0 or 0xDF (Topology Discovery Specific Node Identification Data)
4449 * present, this routine will invoke the lpfc_els_rsp_rnid_acc() routine to
4450 * Accept (ACC) the RNID ELS command. All the other RNID formats are
4451 * rejected by invoking the lpfc_els_rsp_reject() routine.
4454 * 0 - Successfully processed rnid iocb (currently always return 0)
4457 lpfc_els_rcv_rnid(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
4458 struct lpfc_nodelist *ndlp)
4460 struct lpfc_dmabuf *pcmd;
4467 icmd = &cmdiocb->iocb;
4468 did = icmd->un.elsreq64.remoteID;
4469 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
4470 lp = (uint32_t *) pcmd->virt;
4477 switch (rn->Format) {
4479 case RNID_TOPOLOGY_DISC:
4481 lpfc_els_rsp_rnid_acc(vport, rn->Format, cmdiocb, ndlp);
4484 /* Reject this request because format not supported */
4485 stat.un.b.lsRjtRsvd0 = 0;
4486 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
4487 stat.un.b.lsRjtRsnCodeExp = LSEXP_CANT_GIVE_DATA;
4488 stat.un.b.vendorUnique = 0;
4489 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
4496 * lpfc_els_rcv_lirr - Process an unsolicited lirr iocb
4497 * @vport: pointer to a host virtual N_Port data structure.
4498 * @cmdiocb: pointer to lpfc command iocb data structure.
4499 * @ndlp: pointer to a node-list data structure.
4501 * This routine processes a Link Incident Report Registration(LIRR) IOCB
4502 * received as an ELS unsolicited event. Currently, this function just invokes
4503 * the lpfc_els_rsp_reject() routine to reject the LIRR IOCB unconditionally.
4506 * 0 - Successfully processed lirr iocb (currently always return 0)
4509 lpfc_els_rcv_lirr(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
4510 struct lpfc_nodelist *ndlp)
4514 /* For now, unconditionally reject this command */
4515 stat.un.b.lsRjtRsvd0 = 0;
4516 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
4517 stat.un.b.lsRjtRsnCodeExp = LSEXP_CANT_GIVE_DATA;
4518 stat.un.b.vendorUnique = 0;
4519 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
4524 * lpfc_els_rsp_rps_acc - Completion callbk func for MBX_READ_LNK_STAT mbox cmd
4525 * @phba: pointer to lpfc hba data structure.
4526 * @pmb: pointer to the driver internal queue element for mailbox command.
4528 * This routine is the completion callback function for the MBX_READ_LNK_STAT
4529 * mailbox command. This callback function is to actually send the Accept
4530 * (ACC) response to a Read Port Status (RPS) unsolicited IOCB event. It
4531 * collects the link statistics from the completion of the MBX_READ_LNK_STAT
4532 * mailbox command, constructs the RPS response with the link statistics
4533 * collected, and then invokes the lpfc_sli_issue_iocb() routine to send ACC
4534 * response to the RPS.
4536 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
4537 * will be incremented by 1 for holding the ndlp and the reference to ndlp
4538 * will be stored into the context1 field of the IOCB for the completion
4539 * callback function to the RPS Accept Response ELS IOCB command.
4543 lpfc_els_rsp_rps_acc(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
4549 struct lpfc_iocbq *elsiocb;
4550 struct lpfc_nodelist *ndlp;
4551 uint16_t xri, status;
4556 ndlp = (struct lpfc_nodelist *) pmb->context2;
4557 xri = (uint16_t) ((unsigned long)(pmb->context1));
4558 pmb->context1 = NULL;
4559 pmb->context2 = NULL;
4561 if (mb->mbxStatus) {
4562 mempool_free(pmb, phba->mbox_mem_pool);
4566 cmdsize = sizeof(RPS_RSP) + sizeof(uint32_t);
4567 mempool_free(pmb, phba->mbox_mem_pool);
4568 elsiocb = lpfc_prep_els_iocb(phba->pport, 0, cmdsize,
4569 lpfc_max_els_tries, ndlp,
4570 ndlp->nlp_DID, ELS_CMD_ACC);
4572 /* Decrement the ndlp reference count from previous mbox command */
4578 icmd = &elsiocb->iocb;
4579 icmd->ulpContext = xri;
4581 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
4582 *((uint32_t *) (pcmd)) = ELS_CMD_ACC;
4583 pcmd += sizeof(uint32_t); /* Skip past command */
4584 rps_rsp = (RPS_RSP *)pcmd;
4586 if (phba->fc_topology != TOPOLOGY_LOOP)
4590 if (phba->pport->fc_flag & FC_FABRIC)
4594 rps_rsp->portStatus = cpu_to_be16(status);
4595 rps_rsp->linkFailureCnt = cpu_to_be32(mb->un.varRdLnk.linkFailureCnt);
4596 rps_rsp->lossSyncCnt = cpu_to_be32(mb->un.varRdLnk.lossSyncCnt);
4597 rps_rsp->lossSignalCnt = cpu_to_be32(mb->un.varRdLnk.lossSignalCnt);
4598 rps_rsp->primSeqErrCnt = cpu_to_be32(mb->un.varRdLnk.primSeqErrCnt);
4599 rps_rsp->invalidXmitWord = cpu_to_be32(mb->un.varRdLnk.invalidXmitWord);
4600 rps_rsp->crcCnt = cpu_to_be32(mb->un.varRdLnk.crcCnt);
4601 /* Xmit ELS RPS ACC response tag <ulpIoTag> */
4602 lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_ELS,
4603 "0118 Xmit ELS RPS ACC response tag x%x xri x%x, "
4604 "did x%x, nlp_flag x%x, nlp_state x%x, rpi x%x\n",
4605 elsiocb->iotag, elsiocb->iocb.ulpContext,
4606 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
4608 elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp;
4609 phba->fc_stat.elsXmitACC++;
4610 if (lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0) == IOCB_ERROR)
4611 lpfc_els_free_iocb(phba, elsiocb);
4616 * lpfc_els_rcv_rps - Process an unsolicited rps iocb
4617 * @vport: pointer to a host virtual N_Port data structure.
4618 * @cmdiocb: pointer to lpfc command iocb data structure.
4619 * @ndlp: pointer to a node-list data structure.
4621 * This routine processes Read Port Status (RPS) IOCB received as an
4622 * ELS unsolicited event. It first checks the remote port state. If the
4623 * remote port is not in NLP_STE_UNMAPPED_NODE state or NLP_STE_MAPPED_NODE
4624 * state, it invokes the lpfc_els_rsp_reject() routine to send the reject
4625 * response. Otherwise, it issue the MBX_READ_LNK_STAT mailbox command
4626 * for reading the HBA link statistics. It is for the callback function,
4627 * lpfc_els_rsp_rps_acc(), set to the MBX_READ_LNK_STAT mailbox command
4628 * to actually sending out RPS Accept (ACC) response.
4631 * 0 - Successfully processed rps iocb (currently always return 0)
4634 lpfc_els_rcv_rps(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
4635 struct lpfc_nodelist *ndlp)
4637 struct lpfc_hba *phba = vport->phba;
4641 struct lpfc_dmabuf *pcmd;
4645 if ((ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) &&
4646 (ndlp->nlp_state != NLP_STE_MAPPED_NODE))
4647 /* reject the unsolicited RPS request and done with it */
4650 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
4651 lp = (uint32_t *) pcmd->virt;
4652 flag = (be32_to_cpu(*lp++) & 0xf);
4656 ((flag == 1) && (be32_to_cpu(rps->un.portNum) == 0)) ||
4657 ((flag == 2) && (memcmp(&rps->un.portName, &vport->fc_portname,
4658 sizeof(struct lpfc_name)) == 0))) {
4660 printk("Fix me....\n");
4662 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_ATOMIC);
4664 lpfc_read_lnk_stat(phba, mbox);
4666 (void *)((unsigned long) cmdiocb->iocb.ulpContext);
4667 mbox->context2 = lpfc_nlp_get(ndlp);
4668 mbox->vport = vport;
4669 mbox->mbox_cmpl = lpfc_els_rsp_rps_acc;
4670 if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT)
4671 != MBX_NOT_FINISHED)
4672 /* Mbox completion will send ELS Response */
4674 /* Decrement reference count used for the failed mbox
4678 mempool_free(mbox, phba->mbox_mem_pool);
4683 /* issue rejection response */
4684 stat.un.b.lsRjtRsvd0 = 0;
4685 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
4686 stat.un.b.lsRjtRsnCodeExp = LSEXP_CANT_GIVE_DATA;
4687 stat.un.b.vendorUnique = 0;
4688 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
4693 * lpfc_els_rsp_rpl_acc - Issue an accept rpl els command
4694 * @vport: pointer to a host virtual N_Port data structure.
4695 * @cmdsize: size of the ELS command.
4696 * @oldiocb: pointer to the original lpfc command iocb data structure.
4697 * @ndlp: pointer to a node-list data structure.
4699 * This routine issuees an Accept (ACC) Read Port List (RPL) ELS command.
4700 * It is to be called by the lpfc_els_rcv_rpl() routine to accept the RPL.
4702 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
4703 * will be incremented by 1 for holding the ndlp and the reference to ndlp
4704 * will be stored into the context1 field of the IOCB for the completion
4705 * callback function to the RPL Accept Response ELS command.
4708 * 0 - Successfully issued ACC RPL ELS command
4709 * 1 - Failed to issue ACC RPL ELS command
4712 lpfc_els_rsp_rpl_acc(struct lpfc_vport *vport, uint16_t cmdsize,
4713 struct lpfc_iocbq *oldiocb, struct lpfc_nodelist *ndlp)
4715 struct lpfc_hba *phba = vport->phba;
4716 IOCB_t *icmd, *oldcmd;
4718 struct lpfc_iocbq *elsiocb;
4721 elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp,
4722 ndlp->nlp_DID, ELS_CMD_ACC);
4727 icmd = &elsiocb->iocb;
4728 oldcmd = &oldiocb->iocb;
4729 icmd->ulpContext = oldcmd->ulpContext; /* Xri */
4731 pcmd = (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
4732 *((uint32_t *) (pcmd)) = ELS_CMD_ACC;
4733 pcmd += sizeof(uint16_t);
4734 *((uint16_t *)(pcmd)) = be16_to_cpu(cmdsize);
4735 pcmd += sizeof(uint16_t);
4737 /* Setup the RPL ACC payload */
4738 rpl_rsp.listLen = be32_to_cpu(1);
4740 rpl_rsp.port_num_blk.portNum = 0;
4741 rpl_rsp.port_num_blk.portID = be32_to_cpu(vport->fc_myDID);
4742 memcpy(&rpl_rsp.port_num_blk.portName, &vport->fc_portname,
4743 sizeof(struct lpfc_name));
4744 memcpy(pcmd, &rpl_rsp, cmdsize - sizeof(uint32_t));
4745 /* Xmit ELS RPL ACC response tag <ulpIoTag> */
4746 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
4747 "0120 Xmit ELS RPL ACC response tag x%x "
4748 "xri x%x, did x%x, nlp_flag x%x, nlp_state x%x, "
4750 elsiocb->iotag, elsiocb->iocb.ulpContext,
4751 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
4753 elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp;
4754 phba->fc_stat.elsXmitACC++;
4755 if (lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0) ==
4757 lpfc_els_free_iocb(phba, elsiocb);
4764 * lpfc_els_rcv_rpl - Process an unsolicited rpl iocb
4765 * @vport: pointer to a host virtual N_Port data structure.
4766 * @cmdiocb: pointer to lpfc command iocb data structure.
4767 * @ndlp: pointer to a node-list data structure.
4769 * This routine processes Read Port List (RPL) IOCB received as an ELS
4770 * unsolicited event. It first checks the remote port state. If the remote
4771 * port is not in NLP_STE_UNMAPPED_NODE and NLP_STE_MAPPED_NODE states, it
4772 * invokes the lpfc_els_rsp_reject() routine to send reject response.
4773 * Otherwise, this routine then invokes the lpfc_els_rsp_rpl_acc() routine
4774 * to accept the RPL.
4777 * 0 - Successfully processed rpl iocb (currently always return 0)
4780 lpfc_els_rcv_rpl(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
4781 struct lpfc_nodelist *ndlp)
4783 struct lpfc_dmabuf *pcmd;
4790 if ((ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) &&
4791 (ndlp->nlp_state != NLP_STE_MAPPED_NODE)) {
4792 /* issue rejection response */
4793 stat.un.b.lsRjtRsvd0 = 0;
4794 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
4795 stat.un.b.lsRjtRsnCodeExp = LSEXP_CANT_GIVE_DATA;
4796 stat.un.b.vendorUnique = 0;
4797 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
4799 /* rejected the unsolicited RPL request and done with it */
4803 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
4804 lp = (uint32_t *) pcmd->virt;
4805 rpl = (RPL *) (lp + 1);
4807 maxsize = be32_to_cpu(rpl->maxsize);
4809 /* We support only one port */
4810 if ((rpl->index == 0) &&
4812 ((maxsize * sizeof(uint32_t)) >= sizeof(RPL_RSP)))) {
4813 cmdsize = sizeof(uint32_t) + sizeof(RPL_RSP);
4815 cmdsize = sizeof(uint32_t) + maxsize * sizeof(uint32_t);
4817 lpfc_els_rsp_rpl_acc(vport, cmdsize, cmdiocb, ndlp);
4823 * lpfc_els_rcv_farp - Process an unsolicited farp request els command
4824 * @vport: pointer to a virtual N_Port data structure.
4825 * @cmdiocb: pointer to lpfc command iocb data structure.
4826 * @ndlp: pointer to a node-list data structure.
4828 * This routine processes Fibre Channel Address Resolution Protocol
4829 * (FARP) Request IOCB received as an ELS unsolicited event. Currently,
4830 * the lpfc driver only supports matching on WWPN or WWNN for FARP. As such,
4831 * FARP_MATCH_PORT flag and FARP_MATCH_NODE flag are checked against the
4832 * Match Flag in the FARP request IOCB: if FARP_MATCH_PORT flag is set, the
4833 * remote PortName is compared against the FC PortName stored in the @vport
4834 * data structure; if FARP_MATCH_NODE flag is set, the remote NodeName is
4835 * compared against the FC NodeName stored in the @vport data structure.
4836 * If any of these matches and the FARP_REQUEST_FARPR flag is set in the
4837 * FARP request IOCB Response Flag, the lpfc_issue_els_farpr() routine is
4838 * invoked to send out FARP Response to the remote node. Before sending the
4839 * FARP Response, however, the FARP_REQUEST_PLOGI flag is check in the FARP
4840 * request IOCB Response Flag and, if it is set, the lpfc_issue_els_plogi()
4841 * routine is invoked to log into the remote port first.
4844 * 0 - Either the FARP Match Mode not supported or successfully processed
4847 lpfc_els_rcv_farp(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
4848 struct lpfc_nodelist *ndlp)
4850 struct lpfc_dmabuf *pcmd;
4854 uint32_t cmd, cnt, did;
4856 icmd = &cmdiocb->iocb;
4857 did = icmd->un.elsreq64.remoteID;
4858 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
4859 lp = (uint32_t *) pcmd->virt;
4863 /* FARP-REQ received from DID <did> */
4864 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
4865 "0601 FARP-REQ received from DID x%x\n", did);
4866 /* We will only support match on WWPN or WWNN */
4867 if (fp->Mflags & ~(FARP_MATCH_NODE | FARP_MATCH_PORT)) {
4872 /* If this FARP command is searching for my portname */
4873 if (fp->Mflags & FARP_MATCH_PORT) {
4874 if (memcmp(&fp->RportName, &vport->fc_portname,
4875 sizeof(struct lpfc_name)) == 0)
4879 /* If this FARP command is searching for my nodename */
4880 if (fp->Mflags & FARP_MATCH_NODE) {
4881 if (memcmp(&fp->RnodeName, &vport->fc_nodename,
4882 sizeof(struct lpfc_name)) == 0)
4887 if ((ndlp->nlp_state == NLP_STE_UNMAPPED_NODE) ||
4888 (ndlp->nlp_state == NLP_STE_MAPPED_NODE)) {
4889 /* Log back into the node before sending the FARP. */
4890 if (fp->Rflags & FARP_REQUEST_PLOGI) {
4891 ndlp->nlp_prev_state = ndlp->nlp_state;
4892 lpfc_nlp_set_state(vport, ndlp,
4893 NLP_STE_PLOGI_ISSUE);
4894 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
4897 /* Send a FARP response to that node */
4898 if (fp->Rflags & FARP_REQUEST_FARPR)
4899 lpfc_issue_els_farpr(vport, did, 0);
4906 * lpfc_els_rcv_farpr - Process an unsolicited farp response iocb
4907 * @vport: pointer to a host virtual N_Port data structure.
4908 * @cmdiocb: pointer to lpfc command iocb data structure.
4909 * @ndlp: pointer to a node-list data structure.
4911 * This routine processes Fibre Channel Address Resolution Protocol
4912 * Response (FARPR) IOCB received as an ELS unsolicited event. It simply
4913 * invokes the lpfc_els_rsp_acc() routine to the remote node to accept
4914 * the FARP response request.
4917 * 0 - Successfully processed FARPR IOCB (currently always return 0)
4920 lpfc_els_rcv_farpr(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
4921 struct lpfc_nodelist *ndlp)
4923 struct lpfc_dmabuf *pcmd;
4928 icmd = &cmdiocb->iocb;
4929 did = icmd->un.elsreq64.remoteID;
4930 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
4931 lp = (uint32_t *) pcmd->virt;
4934 /* FARP-RSP received from DID <did> */
4935 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
4936 "0600 FARP-RSP received from DID x%x\n", did);
4937 /* ACCEPT the Farp resp request */
4938 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
4944 * lpfc_els_rcv_fan - Process an unsolicited fan iocb command
4945 * @vport: pointer to a host virtual N_Port data structure.
4946 * @cmdiocb: pointer to lpfc command iocb data structure.
4947 * @fan_ndlp: pointer to a node-list data structure.
4949 * This routine processes a Fabric Address Notification (FAN) IOCB
4950 * command received as an ELS unsolicited event. The FAN ELS command will
4951 * only be processed on a physical port (i.e., the @vport represents the
4952 * physical port). The fabric NodeName and PortName from the FAN IOCB are
4953 * compared against those in the phba data structure. If any of those is
4954 * different, the lpfc_initial_flogi() routine is invoked to initialize
4955 * Fabric Login (FLOGI) to the fabric to start the discover over. Otherwise,
4956 * if both of those are identical, the lpfc_issue_fabric_reglogin() routine
4957 * is invoked to register login to the fabric.
4960 * 0 - Successfully processed fan iocb (currently always return 0).
4963 lpfc_els_rcv_fan(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
4964 struct lpfc_nodelist *fan_ndlp)
4966 struct lpfc_hba *phba = vport->phba;
4970 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, "0265 FAN received\n");
4971 lp = (uint32_t *)((struct lpfc_dmabuf *)cmdiocb->context2)->virt;
4973 /* FAN received; Fan does not have a reply sequence */
4974 if ((vport == phba->pport) &&
4975 (vport->port_state == LPFC_LOCAL_CFG_LINK)) {
4976 if ((memcmp(&phba->fc_fabparam.nodeName, &fp->FnodeName,
4977 sizeof(struct lpfc_name))) ||
4978 (memcmp(&phba->fc_fabparam.portName, &fp->FportName,
4979 sizeof(struct lpfc_name)))) {
4980 /* This port has switched fabrics. FLOGI is required */
4981 lpfc_initial_flogi(vport);
4983 /* FAN verified - skip FLOGI */
4984 vport->fc_myDID = vport->fc_prevDID;
4985 if (phba->sli_rev < LPFC_SLI_REV4)
4986 lpfc_issue_fabric_reglogin(vport);
4988 lpfc_issue_reg_vfi(vport);
4995 * lpfc_els_timeout - Handler funciton to the els timer
4996 * @ptr: holder for the timer function associated data.
4998 * This routine is invoked by the ELS timer after timeout. It posts the ELS
4999 * timer timeout event by setting the WORKER_ELS_TMO bit to the work port
5000 * event bitmap and then invokes the lpfc_worker_wake_up() routine to wake
5001 * up the worker thread. It is for the worker thread to invoke the routine
5002 * lpfc_els_timeout_handler() to work on the posted event WORKER_ELS_TMO.
5005 lpfc_els_timeout(unsigned long ptr)
5007 struct lpfc_vport *vport = (struct lpfc_vport *) ptr;
5008 struct lpfc_hba *phba = vport->phba;
5009 uint32_t tmo_posted;
5010 unsigned long iflag;
5012 spin_lock_irqsave(&vport->work_port_lock, iflag);
5013 tmo_posted = vport->work_port_events & WORKER_ELS_TMO;
5015 vport->work_port_events |= WORKER_ELS_TMO;
5016 spin_unlock_irqrestore(&vport->work_port_lock, iflag);
5019 lpfc_worker_wake_up(phba);
5024 * lpfc_els_timeout_handler - Process an els timeout event
5025 * @vport: pointer to a virtual N_Port data structure.
5027 * This routine is the actual handler function that processes an ELS timeout
5028 * event. It walks the ELS ring to get and abort all the IOCBs (except the
5029 * ABORT/CLOSE/FARP/FARPR/FDISC), which are associated with the @vport by
5030 * invoking the lpfc_sli_issue_abort_iotag() routine.
5033 lpfc_els_timeout_handler(struct lpfc_vport *vport)
5035 struct lpfc_hba *phba = vport->phba;
5036 struct lpfc_sli_ring *pring;
5037 struct lpfc_iocbq *tmp_iocb, *piocb;
5039 struct lpfc_dmabuf *pcmd;
5040 uint32_t els_command = 0;
5042 uint32_t remote_ID = 0xffffffff;
5044 spin_lock_irq(&phba->hbalock);
5045 timeout = (uint32_t)(phba->fc_ratov << 1);
5047 pring = &phba->sli.ring[LPFC_ELS_RING];
5049 list_for_each_entry_safe(piocb, tmp_iocb, &pring->txcmplq, list) {
5052 if ((piocb->iocb_flag & LPFC_IO_LIBDFC) != 0 ||
5053 piocb->iocb.ulpCommand == CMD_ABORT_XRI_CN ||
5054 piocb->iocb.ulpCommand == CMD_CLOSE_XRI_CN)
5057 if (piocb->vport != vport)
5060 pcmd = (struct lpfc_dmabuf *) piocb->context2;
5062 els_command = *(uint32_t *) (pcmd->virt);
5064 if (els_command == ELS_CMD_FARP ||
5065 els_command == ELS_CMD_FARPR ||
5066 els_command == ELS_CMD_FDISC)
5069 if (piocb->drvrTimeout > 0) {
5070 if (piocb->drvrTimeout >= timeout)
5071 piocb->drvrTimeout -= timeout;
5073 piocb->drvrTimeout = 0;
5077 remote_ID = 0xffffffff;
5078 if (cmd->ulpCommand != CMD_GEN_REQUEST64_CR)
5079 remote_ID = cmd->un.elsreq64.remoteID;
5081 struct lpfc_nodelist *ndlp;
5082 ndlp = __lpfc_findnode_rpi(vport, cmd->ulpContext);
5083 if (ndlp && NLP_CHK_NODE_ACT(ndlp))
5084 remote_ID = ndlp->nlp_DID;
5086 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
5087 "0127 ELS timeout Data: x%x x%x x%x "
5088 "x%x\n", els_command,
5089 remote_ID, cmd->ulpCommand, cmd->ulpIoTag);
5090 lpfc_sli_issue_abort_iotag(phba, pring, piocb);
5092 spin_unlock_irq(&phba->hbalock);
5094 if (phba->sli.ring[LPFC_ELS_RING].txcmplq_cnt)
5095 mod_timer(&vport->els_tmofunc, jiffies + HZ * timeout);
5099 * lpfc_els_flush_cmd - Clean up the outstanding els commands to a vport
5100 * @vport: pointer to a host virtual N_Port data structure.
5102 * This routine is used to clean up all the outstanding ELS commands on a
5103 * @vport. It first aborts the @vport by invoking lpfc_fabric_abort_vport()
5104 * routine. After that, it walks the ELS transmit queue to remove all the
5105 * IOCBs with the @vport other than the QUE_RING and ABORT/CLOSE IOCBs. For
5106 * the IOCBs with a non-NULL completion callback function, the callback
5107 * function will be invoked with the status set to IOSTAT_LOCAL_REJECT and
5108 * un.ulpWord[4] set to IOERR_SLI_ABORTED. For IOCBs with a NULL completion
5109 * callback function, the IOCB will simply be released. Finally, it walks
5110 * the ELS transmit completion queue to issue an abort IOCB to any transmit
5111 * completion queue IOCB that is associated with the @vport and is not
5112 * an IOCB from libdfc (i.e., the management plane IOCBs that are not
5113 * part of the discovery state machine) out to HBA by invoking the
5114 * lpfc_sli_issue_abort_iotag() routine. Note that this function issues the
5115 * abort IOCB to any transmit completion queueed IOCB, it does not guarantee
5116 * the IOCBs are aborted when this function returns.
5119 lpfc_els_flush_cmd(struct lpfc_vport *vport)
5121 LIST_HEAD(completions);
5122 struct lpfc_hba *phba = vport->phba;
5123 struct lpfc_sli_ring *pring = &phba->sli.ring[LPFC_ELS_RING];
5124 struct lpfc_iocbq *tmp_iocb, *piocb;
5127 lpfc_fabric_abort_vport(vport);
5129 spin_lock_irq(&phba->hbalock);
5130 list_for_each_entry_safe(piocb, tmp_iocb, &pring->txq, list) {
5133 if (piocb->iocb_flag & LPFC_IO_LIBDFC) {
5137 /* Do not flush out the QUE_RING and ABORT/CLOSE iocbs */
5138 if (cmd->ulpCommand == CMD_QUE_RING_BUF_CN ||
5139 cmd->ulpCommand == CMD_QUE_RING_BUF64_CN ||
5140 cmd->ulpCommand == CMD_CLOSE_XRI_CN ||
5141 cmd->ulpCommand == CMD_ABORT_XRI_CN)
5144 if (piocb->vport != vport)
5147 list_move_tail(&piocb->list, &completions);
5151 list_for_each_entry_safe(piocb, tmp_iocb, &pring->txcmplq, list) {
5152 if (piocb->iocb_flag & LPFC_IO_LIBDFC) {
5156 if (piocb->vport != vport)
5159 lpfc_sli_issue_abort_iotag(phba, pring, piocb);
5161 spin_unlock_irq(&phba->hbalock);
5163 /* Cancell all the IOCBs from the completions list */
5164 lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
5171 * lpfc_els_flush_all_cmd - Clean up all the outstanding els commands to a HBA
5172 * @phba: pointer to lpfc hba data structure.
5174 * This routine is used to clean up all the outstanding ELS commands on a
5175 * @phba. It first aborts the @phba by invoking the lpfc_fabric_abort_hba()
5176 * routine. After that, it walks the ELS transmit queue to remove all the
5177 * IOCBs to the @phba other than the QUE_RING and ABORT/CLOSE IOCBs. For
5178 * the IOCBs with the completion callback function associated, the callback
5179 * function will be invoked with the status set to IOSTAT_LOCAL_REJECT and
5180 * un.ulpWord[4] set to IOERR_SLI_ABORTED. For IOCBs without the completion
5181 * callback function associated, the IOCB will simply be released. Finally,
5182 * it walks the ELS transmit completion queue to issue an abort IOCB to any
5183 * transmit completion queue IOCB that is not an IOCB from libdfc (i.e., the
5184 * management plane IOCBs that are not part of the discovery state machine)
5185 * out to HBA by invoking the lpfc_sli_issue_abort_iotag() routine.
5188 lpfc_els_flush_all_cmd(struct lpfc_hba *phba)
5190 LIST_HEAD(completions);
5191 struct lpfc_sli_ring *pring = &phba->sli.ring[LPFC_ELS_RING];
5192 struct lpfc_iocbq *tmp_iocb, *piocb;
5195 lpfc_fabric_abort_hba(phba);
5196 spin_lock_irq(&phba->hbalock);
5197 list_for_each_entry_safe(piocb, tmp_iocb, &pring->txq, list) {
5199 if (piocb->iocb_flag & LPFC_IO_LIBDFC)
5201 /* Do not flush out the QUE_RING and ABORT/CLOSE iocbs */
5202 if (cmd->ulpCommand == CMD_QUE_RING_BUF_CN ||
5203 cmd->ulpCommand == CMD_QUE_RING_BUF64_CN ||
5204 cmd->ulpCommand == CMD_CLOSE_XRI_CN ||
5205 cmd->ulpCommand == CMD_ABORT_XRI_CN)
5207 list_move_tail(&piocb->list, &completions);
5210 list_for_each_entry_safe(piocb, tmp_iocb, &pring->txcmplq, list) {
5211 if (piocb->iocb_flag & LPFC_IO_LIBDFC)
5213 lpfc_sli_issue_abort_iotag(phba, pring, piocb);
5215 spin_unlock_irq(&phba->hbalock);
5217 /* Cancel all the IOCBs from the completions list */
5218 lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
5225 * lpfc_send_els_failure_event - Posts an ELS command failure event
5226 * @phba: Pointer to hba context object.
5227 * @cmdiocbp: Pointer to command iocb which reported error.
5228 * @rspiocbp: Pointer to response iocb which reported error.
5230 * This function sends an event when there is an ELS command
5234 lpfc_send_els_failure_event(struct lpfc_hba *phba,
5235 struct lpfc_iocbq *cmdiocbp,
5236 struct lpfc_iocbq *rspiocbp)
5238 struct lpfc_vport *vport = cmdiocbp->vport;
5239 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
5240 struct lpfc_lsrjt_event lsrjt_event;
5241 struct lpfc_fabric_event_header fabric_event;
5243 struct lpfc_nodelist *ndlp;
5246 ndlp = cmdiocbp->context1;
5247 if (!ndlp || !NLP_CHK_NODE_ACT(ndlp))
5250 if (rspiocbp->iocb.ulpStatus == IOSTAT_LS_RJT) {
5251 lsrjt_event.header.event_type = FC_REG_ELS_EVENT;
5252 lsrjt_event.header.subcategory = LPFC_EVENT_LSRJT_RCV;
5253 memcpy(lsrjt_event.header.wwpn, &ndlp->nlp_portname,
5254 sizeof(struct lpfc_name));
5255 memcpy(lsrjt_event.header.wwnn, &ndlp->nlp_nodename,
5256 sizeof(struct lpfc_name));
5257 pcmd = (uint32_t *) (((struct lpfc_dmabuf *)
5258 cmdiocbp->context2)->virt);
5259 lsrjt_event.command = *pcmd;
5260 stat.un.lsRjtError = be32_to_cpu(rspiocbp->iocb.un.ulpWord[4]);
5261 lsrjt_event.reason_code = stat.un.b.lsRjtRsnCode;
5262 lsrjt_event.explanation = stat.un.b.lsRjtRsnCodeExp;
5263 fc_host_post_vendor_event(shost,
5264 fc_get_event_number(),
5265 sizeof(lsrjt_event),
5266 (char *)&lsrjt_event,
5270 if ((rspiocbp->iocb.ulpStatus == IOSTAT_NPORT_BSY) ||
5271 (rspiocbp->iocb.ulpStatus == IOSTAT_FABRIC_BSY)) {
5272 fabric_event.event_type = FC_REG_FABRIC_EVENT;
5273 if (rspiocbp->iocb.ulpStatus == IOSTAT_NPORT_BSY)
5274 fabric_event.subcategory = LPFC_EVENT_PORT_BUSY;
5276 fabric_event.subcategory = LPFC_EVENT_FABRIC_BUSY;
5277 memcpy(fabric_event.wwpn, &ndlp->nlp_portname,
5278 sizeof(struct lpfc_name));
5279 memcpy(fabric_event.wwnn, &ndlp->nlp_nodename,
5280 sizeof(struct lpfc_name));
5281 fc_host_post_vendor_event(shost,
5282 fc_get_event_number(),
5283 sizeof(fabric_event),
5284 (char *)&fabric_event,
5292 * lpfc_send_els_event - Posts unsolicited els event
5293 * @vport: Pointer to vport object.
5294 * @ndlp: Pointer FC node object.
5295 * @cmd: ELS command code.
5297 * This function posts an event when there is an incoming
5298 * unsolicited ELS command.
5301 lpfc_send_els_event(struct lpfc_vport *vport,
5302 struct lpfc_nodelist *ndlp,
5305 struct lpfc_els_event_header *els_data = NULL;
5306 struct lpfc_logo_event *logo_data = NULL;
5307 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
5309 if (*payload == ELS_CMD_LOGO) {
5310 logo_data = kmalloc(sizeof(struct lpfc_logo_event), GFP_KERNEL);
5312 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
5313 "0148 Failed to allocate memory "
5314 "for LOGO event\n");
5317 els_data = &logo_data->header;
5319 els_data = kmalloc(sizeof(struct lpfc_els_event_header),
5322 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
5323 "0149 Failed to allocate memory "
5328 els_data->event_type = FC_REG_ELS_EVENT;
5331 els_data->subcategory = LPFC_EVENT_PLOGI_RCV;
5334 els_data->subcategory = LPFC_EVENT_PRLO_RCV;
5337 els_data->subcategory = LPFC_EVENT_ADISC_RCV;
5340 els_data->subcategory = LPFC_EVENT_LOGO_RCV;
5341 /* Copy the WWPN in the LOGO payload */
5342 memcpy(logo_data->logo_wwpn, &payload[2],
5343 sizeof(struct lpfc_name));
5349 memcpy(els_data->wwpn, &ndlp->nlp_portname, sizeof(struct lpfc_name));
5350 memcpy(els_data->wwnn, &ndlp->nlp_nodename, sizeof(struct lpfc_name));
5351 if (*payload == ELS_CMD_LOGO) {
5352 fc_host_post_vendor_event(shost,
5353 fc_get_event_number(),
5354 sizeof(struct lpfc_logo_event),
5359 fc_host_post_vendor_event(shost,
5360 fc_get_event_number(),
5361 sizeof(struct lpfc_els_event_header),
5372 * lpfc_els_unsol_buffer - Process an unsolicited event data buffer
5373 * @phba: pointer to lpfc hba data structure.
5374 * @pring: pointer to a SLI ring.
5375 * @vport: pointer to a host virtual N_Port data structure.
5376 * @elsiocb: pointer to lpfc els command iocb data structure.
5378 * This routine is used for processing the IOCB associated with a unsolicited
5379 * event. It first determines whether there is an existing ndlp that matches
5380 * the DID from the unsolicited IOCB. If not, it will create a new one with
5381 * the DID from the unsolicited IOCB. The ELS command from the unsolicited
5382 * IOCB is then used to invoke the proper routine and to set up proper state
5383 * of the discovery state machine.
5386 lpfc_els_unsol_buffer(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
5387 struct lpfc_vport *vport, struct lpfc_iocbq *elsiocb)
5389 struct Scsi_Host *shost;
5390 struct lpfc_nodelist *ndlp;
5393 uint32_t cmd, did, newnode, rjt_err = 0;
5394 IOCB_t *icmd = &elsiocb->iocb;
5396 if (!vport || !(elsiocb->context2))
5400 payload = ((struct lpfc_dmabuf *)elsiocb->context2)->virt;
5402 if ((phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) == 0)
5403 lpfc_post_buffer(phba, pring, 1);
5405 did = icmd->un.rcvels.remoteID;
5406 if (icmd->ulpStatus) {
5407 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
5408 "RCV Unsol ELS: status:x%x/x%x did:x%x",
5409 icmd->ulpStatus, icmd->un.ulpWord[4], did);
5413 /* Check to see if link went down during discovery */
5414 if (lpfc_els_chk_latt(vport))
5417 /* Ignore traffic received during vport shutdown. */
5418 if (vport->load_flag & FC_UNLOADING)
5421 ndlp = lpfc_findnode_did(vport, did);
5423 /* Cannot find existing Fabric ndlp, so allocate a new one */
5424 ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL);
5428 lpfc_nlp_init(vport, ndlp, did);
5429 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
5431 if ((did & Fabric_DID_MASK) == Fabric_DID_MASK)
5432 ndlp->nlp_type |= NLP_FABRIC;
5433 } else if (!NLP_CHK_NODE_ACT(ndlp)) {
5434 ndlp = lpfc_enable_node(vport, ndlp,
5435 NLP_STE_UNUSED_NODE);
5438 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
5440 if ((did & Fabric_DID_MASK) == Fabric_DID_MASK)
5441 ndlp->nlp_type |= NLP_FABRIC;
5442 } else if (ndlp->nlp_state == NLP_STE_UNUSED_NODE) {
5443 /* This is similar to the new node path */
5444 ndlp = lpfc_nlp_get(ndlp);
5447 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
5451 phba->fc_stat.elsRcvFrame++;
5453 elsiocb->context1 = lpfc_nlp_get(ndlp);
5454 elsiocb->vport = vport;
5456 if ((cmd & ELS_CMD_MASK) == ELS_CMD_RSCN) {
5457 cmd &= ELS_CMD_MASK;
5459 /* ELS command <elsCmd> received from NPORT <did> */
5460 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
5461 "0112 ELS command x%x received from NPORT x%x "
5462 "Data: x%x\n", cmd, did, vport->port_state);
5465 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
5466 "RCV PLOGI: did:x%x/ste:x%x flg:x%x",
5467 did, vport->port_state, ndlp->nlp_flag);
5469 phba->fc_stat.elsRcvPLOGI++;
5470 ndlp = lpfc_plogi_confirm_nport(phba, payload, ndlp);
5472 lpfc_send_els_event(vport, ndlp, payload);
5473 if (vport->port_state < LPFC_DISC_AUTH) {
5474 if (!(phba->pport->fc_flag & FC_PT2PT) ||
5475 (phba->pport->fc_flag & FC_PT2PT_PLOGI)) {
5476 rjt_err = LSRJT_UNABLE_TPC;
5479 /* We get here, and drop thru, if we are PT2PT with
5480 * another NPort and the other side has initiated
5481 * the PLOGI before responding to our FLOGI.
5485 shost = lpfc_shost_from_vport(vport);
5486 spin_lock_irq(shost->host_lock);
5487 ndlp->nlp_flag &= ~NLP_TARGET_REMOVE;
5488 spin_unlock_irq(shost->host_lock);
5490 lpfc_disc_state_machine(vport, ndlp, elsiocb,
5495 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
5496 "RCV FLOGI: did:x%x/ste:x%x flg:x%x",
5497 did, vport->port_state, ndlp->nlp_flag);
5499 phba->fc_stat.elsRcvFLOGI++;
5500 lpfc_els_rcv_flogi(vport, elsiocb, ndlp);
5505 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
5506 "RCV LOGO: did:x%x/ste:x%x flg:x%x",
5507 did, vport->port_state, ndlp->nlp_flag);
5509 phba->fc_stat.elsRcvLOGO++;
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_LOGO);
5518 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
5519 "RCV PRLO: did:x%x/ste:x%x flg:x%x",
5520 did, vport->port_state, ndlp->nlp_flag);
5522 phba->fc_stat.elsRcvPRLO++;
5523 lpfc_send_els_event(vport, ndlp, payload);
5524 if (vport->port_state < LPFC_DISC_AUTH) {
5525 rjt_err = LSRJT_UNABLE_TPC;
5528 lpfc_disc_state_machine(vport, ndlp, elsiocb, NLP_EVT_RCV_PRLO);
5531 phba->fc_stat.elsRcvRSCN++;
5532 lpfc_els_rcv_rscn(vport, elsiocb, ndlp);
5537 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
5538 "RCV ADISC: did:x%x/ste:x%x flg:x%x",
5539 did, vport->port_state, ndlp->nlp_flag);
5541 lpfc_send_els_event(vport, ndlp, payload);
5542 phba->fc_stat.elsRcvADISC++;
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 PDISC: did:x%x/ste:x%x flg:x%x",
5553 did, vport->port_state, ndlp->nlp_flag);
5555 phba->fc_stat.elsRcvPDISC++;
5556 if (vport->port_state < LPFC_DISC_AUTH) {
5557 rjt_err = LSRJT_UNABLE_TPC;
5560 lpfc_disc_state_machine(vport, ndlp, elsiocb,
5564 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
5565 "RCV FARPR: did:x%x/ste:x%x flg:x%x",
5566 did, vport->port_state, ndlp->nlp_flag);
5568 phba->fc_stat.elsRcvFARPR++;
5569 lpfc_els_rcv_farpr(vport, elsiocb, ndlp);
5572 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
5573 "RCV FARP: did:x%x/ste:x%x flg:x%x",
5574 did, vport->port_state, ndlp->nlp_flag);
5576 phba->fc_stat.elsRcvFARP++;
5577 lpfc_els_rcv_farp(vport, elsiocb, ndlp);
5580 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
5581 "RCV FAN: did:x%x/ste:x%x flg:x%x",
5582 did, vport->port_state, ndlp->nlp_flag);
5584 phba->fc_stat.elsRcvFAN++;
5585 lpfc_els_rcv_fan(vport, elsiocb, ndlp);
5588 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
5589 "RCV PRLI: did:x%x/ste:x%x flg:x%x",
5590 did, vport->port_state, ndlp->nlp_flag);
5592 phba->fc_stat.elsRcvPRLI++;
5593 if (vport->port_state < LPFC_DISC_AUTH) {
5594 rjt_err = LSRJT_UNABLE_TPC;
5597 lpfc_disc_state_machine(vport, ndlp, elsiocb, NLP_EVT_RCV_PRLI);
5600 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
5601 "RCV LIRR: did:x%x/ste:x%x flg:x%x",
5602 did, vport->port_state, ndlp->nlp_flag);
5604 phba->fc_stat.elsRcvLIRR++;
5605 lpfc_els_rcv_lirr(vport, elsiocb, ndlp);
5610 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
5611 "RCV RPS: did:x%x/ste:x%x flg:x%x",
5612 did, vport->port_state, ndlp->nlp_flag);
5614 phba->fc_stat.elsRcvRPS++;
5615 lpfc_els_rcv_rps(vport, elsiocb, ndlp);
5620 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
5621 "RCV RPL: did:x%x/ste:x%x flg:x%x",
5622 did, vport->port_state, ndlp->nlp_flag);
5624 phba->fc_stat.elsRcvRPL++;
5625 lpfc_els_rcv_rpl(vport, elsiocb, ndlp);
5630 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
5631 "RCV RNID: did:x%x/ste:x%x flg:x%x",
5632 did, vport->port_state, ndlp->nlp_flag);
5634 phba->fc_stat.elsRcvRNID++;
5635 lpfc_els_rcv_rnid(vport, elsiocb, ndlp);
5640 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
5641 "RCV ELS cmd: cmd:x%x did:x%x/ste:x%x",
5642 cmd, did, vport->port_state);
5644 /* Unsupported ELS command, reject */
5645 rjt_err = LSRJT_INVALID_CMD;
5647 /* Unknown ELS command <elsCmd> received from NPORT <did> */
5648 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
5649 "0115 Unknown ELS command x%x "
5650 "received from NPORT x%x\n", cmd, did);
5656 /* check if need to LS_RJT received ELS cmd */
5658 memset(&stat, 0, sizeof(stat));
5659 stat.un.b.lsRjtRsnCode = rjt_err;
5660 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
5661 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, elsiocb, ndlp,
5665 lpfc_nlp_put(elsiocb->context1);
5666 elsiocb->context1 = NULL;
5670 if (vport && !(vport->load_flag & FC_UNLOADING))
5671 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
5672 "0111 Dropping received ELS cmd "
5673 "Data: x%x x%x x%x\n",
5674 icmd->ulpStatus, icmd->un.ulpWord[4], icmd->ulpTimeout);
5675 phba->fc_stat.elsRcvDrop++;
5679 * lpfc_find_vport_by_vpid - Find a vport on a HBA through vport identifier
5680 * @phba: pointer to lpfc hba data structure.
5681 * @vpi: host virtual N_Port identifier.
5683 * This routine finds a vport on a HBA (referred by @phba) through a
5684 * @vpi. The function walks the HBA's vport list and returns the address
5685 * of the vport with the matching @vpi.
5688 * NULL - No vport with the matching @vpi found
5689 * Otherwise - Address to the vport with the matching @vpi.
5692 lpfc_find_vport_by_vpid(struct lpfc_hba *phba, uint16_t vpi)
5694 struct lpfc_vport *vport;
5695 unsigned long flags;
5697 spin_lock_irqsave(&phba->hbalock, flags);
5698 list_for_each_entry(vport, &phba->port_list, listentry) {
5699 if (vport->vpi == vpi) {
5700 spin_unlock_irqrestore(&phba->hbalock, flags);
5704 spin_unlock_irqrestore(&phba->hbalock, flags);
5709 * lpfc_els_unsol_event - Process an unsolicited event from an els sli ring
5710 * @phba: pointer to lpfc hba data structure.
5711 * @pring: pointer to a SLI ring.
5712 * @elsiocb: pointer to lpfc els iocb data structure.
5714 * This routine is used to process an unsolicited event received from a SLI
5715 * (Service Level Interface) ring. The actual processing of the data buffer
5716 * associated with the unsolicited event is done by invoking the routine
5717 * lpfc_els_unsol_buffer() after properly set up the iocb buffer from the
5718 * SLI ring on which the unsolicited event was received.
5721 lpfc_els_unsol_event(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
5722 struct lpfc_iocbq *elsiocb)
5724 struct lpfc_vport *vport = phba->pport;
5725 IOCB_t *icmd = &elsiocb->iocb;
5727 struct lpfc_dmabuf *bdeBuf1 = elsiocb->context2;
5728 struct lpfc_dmabuf *bdeBuf2 = elsiocb->context3;
5730 elsiocb->context1 = NULL;
5731 elsiocb->context2 = NULL;
5732 elsiocb->context3 = NULL;
5734 if (icmd->ulpStatus == IOSTAT_NEED_BUFFER) {
5735 lpfc_sli_hbqbuf_add_hbqs(phba, LPFC_ELS_HBQ);
5736 } else if (icmd->ulpStatus == IOSTAT_LOCAL_REJECT &&
5737 (icmd->un.ulpWord[4] & 0xff) == IOERR_RCV_BUFFER_WAITING) {
5738 phba->fc_stat.NoRcvBuf++;
5739 /* Not enough posted buffers; Try posting more buffers */
5740 if (!(phba->sli3_options & LPFC_SLI3_HBQ_ENABLED))
5741 lpfc_post_buffer(phba, pring, 0);
5745 if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
5746 (icmd->ulpCommand == CMD_IOCB_RCV_ELS64_CX ||
5747 icmd->ulpCommand == CMD_IOCB_RCV_SEQ64_CX)) {
5748 if (icmd->unsli3.rcvsli3.vpi == 0xffff)
5749 vport = phba->pport;
5751 vport = lpfc_find_vport_by_vpid(phba,
5752 icmd->unsli3.rcvsli3.vpi - phba->vpi_base);
5754 /* If there are no BDEs associated
5755 * with this IOCB, there is nothing to do.
5757 if (icmd->ulpBdeCount == 0)
5760 /* type of ELS cmd is first 32bit word
5763 if (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) {
5764 elsiocb->context2 = bdeBuf1;
5766 paddr = getPaddr(icmd->un.cont64[0].addrHigh,
5767 icmd->un.cont64[0].addrLow);
5768 elsiocb->context2 = lpfc_sli_ringpostbuf_get(phba, pring,
5772 lpfc_els_unsol_buffer(phba, pring, vport, elsiocb);
5774 * The different unsolicited event handlers would tell us
5775 * if they are done with "mp" by setting context2 to NULL.
5777 if (elsiocb->context2) {
5778 lpfc_in_buf_free(phba, (struct lpfc_dmabuf *)elsiocb->context2);
5779 elsiocb->context2 = NULL;
5782 /* RCV_ELS64_CX provide for 2 BDEs - process 2nd if included */
5783 if ((phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) &&
5784 icmd->ulpBdeCount == 2) {
5785 elsiocb->context2 = bdeBuf2;
5786 lpfc_els_unsol_buffer(phba, pring, vport, elsiocb);
5787 /* free mp if we are done with it */
5788 if (elsiocb->context2) {
5789 lpfc_in_buf_free(phba, elsiocb->context2);
5790 elsiocb->context2 = NULL;
5796 * lpfc_do_scr_ns_plogi - Issue a plogi to the name server for scr
5797 * @phba: pointer to lpfc hba data structure.
5798 * @vport: pointer to a virtual N_Port data structure.
5800 * This routine issues a Port Login (PLOGI) to the Name Server with
5801 * State Change Request (SCR) for a @vport. This routine will create an
5802 * ndlp for the Name Server associated to the @vport if such node does
5803 * not already exist. The PLOGI to Name Server is issued by invoking the
5804 * lpfc_issue_els_plogi() routine. If Fabric-Device Management Interface
5805 * (FDMI) is configured to the @vport, a FDMI node will be created and
5806 * the PLOGI to FDMI is issued by invoking lpfc_issue_els_plogi() routine.
5809 lpfc_do_scr_ns_plogi(struct lpfc_hba *phba, struct lpfc_vport *vport)
5811 struct lpfc_nodelist *ndlp, *ndlp_fdmi;
5813 ndlp = lpfc_findnode_did(vport, NameServer_DID);
5815 ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL);
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 "0251 NameServer login: no memory\n");
5826 lpfc_nlp_init(vport, ndlp, NameServer_DID);
5827 } else if (!NLP_CHK_NODE_ACT(ndlp)) {
5828 ndlp = lpfc_enable_node(vport, ndlp, NLP_STE_UNUSED_NODE);
5830 if (phba->fc_topology == TOPOLOGY_LOOP) {
5831 lpfc_disc_start(vport);
5834 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
5835 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
5836 "0348 NameServer login: node freed\n");
5840 ndlp->nlp_type |= NLP_FABRIC;
5842 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
5844 if (lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0)) {
5845 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
5846 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
5847 "0252 Cannot issue NameServer login\n");
5851 if (vport->cfg_fdmi_on) {
5852 ndlp_fdmi = mempool_alloc(phba->nlp_mem_pool,
5855 lpfc_nlp_init(vport, ndlp_fdmi, FDMI_DID);
5856 ndlp_fdmi->nlp_type |= NLP_FABRIC;
5857 lpfc_nlp_set_state(vport, ndlp_fdmi,
5858 NLP_STE_PLOGI_ISSUE);
5859 lpfc_issue_els_plogi(vport, ndlp_fdmi->nlp_DID,
5867 * lpfc_cmpl_reg_new_vport - Completion callback function to register new vport
5868 * @phba: pointer to lpfc hba data structure.
5869 * @pmb: pointer to the driver internal queue element for mailbox command.
5871 * This routine is the completion callback function to register new vport
5872 * mailbox command. If the new vport mailbox command completes successfully,
5873 * the fabric registration login shall be performed on physical port (the
5874 * new vport created is actually a physical port, with VPI 0) or the port
5875 * login to Name Server for State Change Request (SCR) will be performed
5876 * on virtual port (real virtual port, with VPI greater than 0).
5879 lpfc_cmpl_reg_new_vport(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
5881 struct lpfc_vport *vport = pmb->vport;
5882 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
5883 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2;
5884 MAILBOX_t *mb = &pmb->u.mb;
5886 spin_lock_irq(shost->host_lock);
5887 vport->fc_flag &= ~FC_VPORT_NEEDS_REG_VPI;
5888 spin_unlock_irq(shost->host_lock);
5890 if (mb->mbxStatus) {
5891 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
5892 "0915 Register VPI failed: 0x%x\n",
5895 switch (mb->mbxStatus) {
5896 case 0x11: /* unsupported feature */
5897 case 0x9603: /* max_vpi exceeded */
5898 case 0x9602: /* Link event since CLEAR_LA */
5899 /* giving up on vport registration */
5900 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
5901 spin_lock_irq(shost->host_lock);
5902 vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
5903 spin_unlock_irq(shost->host_lock);
5904 lpfc_can_disctmo(vport);
5907 /* Try to recover from this error */
5908 lpfc_mbx_unreg_vpi(vport);
5909 spin_lock_irq(shost->host_lock);
5910 vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
5911 spin_unlock_irq(shost->host_lock);
5912 if (vport->port_type == LPFC_PHYSICAL_PORT)
5913 lpfc_initial_flogi(vport);
5915 lpfc_initial_fdisc(vport);
5920 if (vport == phba->pport)
5921 if (phba->sli_rev < LPFC_SLI_REV4)
5922 lpfc_issue_fabric_reglogin(vport);
5924 lpfc_issue_reg_vfi(vport);
5926 lpfc_do_scr_ns_plogi(phba, vport);
5929 /* Now, we decrement the ndlp reference count held for this
5934 mempool_free(pmb, phba->mbox_mem_pool);
5939 * lpfc_register_new_vport - Register a new vport with a HBA
5940 * @phba: pointer to lpfc hba data structure.
5941 * @vport: pointer to a host virtual N_Port data structure.
5942 * @ndlp: pointer to a node-list data structure.
5944 * This routine registers the @vport as a new virtual port with a HBA.
5945 * It is done through a registering vpi mailbox command.
5948 lpfc_register_new_vport(struct lpfc_hba *phba, struct lpfc_vport *vport,
5949 struct lpfc_nodelist *ndlp)
5951 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
5954 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
5956 lpfc_reg_vpi(vport, mbox);
5957 mbox->vport = vport;
5958 mbox->context2 = lpfc_nlp_get(ndlp);
5959 mbox->mbox_cmpl = lpfc_cmpl_reg_new_vport;
5960 if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT)
5961 == MBX_NOT_FINISHED) {
5962 /* mailbox command not success, decrement ndlp
5963 * reference count for this command
5966 mempool_free(mbox, phba->mbox_mem_pool);
5968 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
5969 "0253 Register VPI: Can't send mbox\n");
5973 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
5974 "0254 Register VPI: no memory\n");
5980 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
5981 spin_lock_irq(shost->host_lock);
5982 vport->fc_flag &= ~FC_VPORT_NEEDS_REG_VPI;
5983 spin_unlock_irq(shost->host_lock);
5988 * lpfc_cmpl_els_fdisc - Completion function for fdisc iocb command
5989 * @phba: pointer to lpfc hba data structure.
5990 * @cmdiocb: pointer to lpfc command iocb data structure.
5991 * @rspiocb: pointer to lpfc response iocb data structure.
5993 * This routine is the completion callback function to a Fabric Discover
5994 * (FDISC) ELS command. Since all the FDISC ELS commands are issued
5995 * single threaded, each FDISC completion callback function will reset
5996 * the discovery timer for all vports such that the timers will not get
5997 * unnecessary timeout. The function checks the FDISC IOCB status. If error
5998 * detected, the vport will be set to FC_VPORT_FAILED state. Otherwise,the
5999 * vport will set to FC_VPORT_ACTIVE state. It then checks whether the DID
6000 * assigned to the vport has been changed with the completion of the FDISC
6001 * command. If so, both RPI (Remote Port Index) and VPI (Virtual Port Index)
6002 * are unregistered from the HBA, and then the lpfc_register_new_vport()
6003 * routine is invoked to register new vport with the HBA. Otherwise, the
6004 * lpfc_do_scr_ns_plogi() routine is invoked to issue a PLOGI to the Name
6005 * Server for State Change Request (SCR).
6008 lpfc_cmpl_els_fdisc(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
6009 struct lpfc_iocbq *rspiocb)
6011 struct lpfc_vport *vport = cmdiocb->vport;
6012 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
6013 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) cmdiocb->context1;
6014 struct lpfc_nodelist *np;
6015 struct lpfc_nodelist *next_np;
6016 IOCB_t *irsp = &rspiocb->iocb;
6017 struct lpfc_iocbq *piocb;
6019 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
6020 "0123 FDISC completes. x%x/x%x prevDID: x%x\n",
6021 irsp->ulpStatus, irsp->un.ulpWord[4],
6023 /* Since all FDISCs are being single threaded, we
6024 * must reset the discovery timer for ALL vports
6025 * waiting to send FDISC when one completes.
6027 list_for_each_entry(piocb, &phba->fabric_iocb_list, list) {
6028 lpfc_set_disctmo(piocb->vport);
6031 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
6032 "FDISC cmpl: status:x%x/x%x prevdid:x%x",
6033 irsp->ulpStatus, irsp->un.ulpWord[4], vport->fc_prevDID);
6035 if (irsp->ulpStatus) {
6036 /* Check for retry */
6037 if (lpfc_els_retry(phba, cmdiocb, rspiocb))
6040 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
6041 "0126 FDISC failed. (%d/%d)\n",
6042 irsp->ulpStatus, irsp->un.ulpWord[4]);
6045 if (vport->fc_vport->vport_state == FC_VPORT_INITIALIZING)
6046 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
6048 /* giving up on FDISC. Cancel discovery timer */
6049 lpfc_can_disctmo(vport);
6050 spin_lock_irq(shost->host_lock);
6051 vport->fc_flag |= FC_FABRIC;
6052 if (vport->phba->fc_topology == TOPOLOGY_LOOP)
6053 vport->fc_flag |= FC_PUBLIC_LOOP;
6054 spin_unlock_irq(shost->host_lock);
6056 vport->fc_myDID = irsp->un.ulpWord[4] & Mask_DID;
6057 lpfc_vport_set_state(vport, FC_VPORT_ACTIVE);
6058 if ((vport->fc_prevDID != vport->fc_myDID) &&
6059 !(vport->fc_flag & FC_VPORT_NEEDS_REG_VPI)) {
6060 /* If our NportID changed, we need to ensure all
6061 * remaining NPORTs get unreg_login'ed so we can
6064 list_for_each_entry_safe(np, next_np,
6065 &vport->fc_nodes, nlp_listp) {
6066 if (!NLP_CHK_NODE_ACT(ndlp) ||
6067 (np->nlp_state != NLP_STE_NPR_NODE) ||
6068 !(np->nlp_flag & NLP_NPR_ADISC))
6070 spin_lock_irq(shost->host_lock);
6071 np->nlp_flag &= ~NLP_NPR_ADISC;
6072 spin_unlock_irq(shost->host_lock);
6073 lpfc_unreg_rpi(vport, np);
6075 lpfc_mbx_unreg_vpi(vport);
6076 spin_lock_irq(shost->host_lock);
6077 vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
6078 spin_unlock_irq(shost->host_lock);
6081 if (vport->fc_flag & FC_VPORT_NEEDS_REG_VPI)
6082 lpfc_register_new_vport(phba, vport, ndlp);
6084 lpfc_do_scr_ns_plogi(phba, vport);
6087 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
6088 /* Cancel discovery timer */
6089 lpfc_can_disctmo(vport);
6092 lpfc_els_free_iocb(phba, cmdiocb);
6096 * lpfc_issue_els_fdisc - Issue a fdisc iocb command
6097 * @vport: pointer to a virtual N_Port data structure.
6098 * @ndlp: pointer to a node-list data structure.
6099 * @retry: number of retries to the command IOCB.
6101 * This routine prepares and issues a Fabric Discover (FDISC) IOCB to
6102 * a remote node (@ndlp) off a @vport. It uses the lpfc_issue_fabric_iocb()
6103 * routine to issue the IOCB, which makes sure only one outstanding fabric
6104 * IOCB will be sent off HBA at any given time.
6106 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
6107 * will be incremented by 1 for holding the ndlp and the reference to ndlp
6108 * will be stored into the context1 field of the IOCB for the completion
6109 * callback function to the FDISC ELS command.
6112 * 0 - Successfully issued fdisc iocb command
6113 * 1 - Failed to issue fdisc iocb command
6116 lpfc_issue_els_fdisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
6119 struct lpfc_hba *phba = vport->phba;
6121 struct lpfc_iocbq *elsiocb;
6122 struct serv_parm *sp;
6125 int did = ndlp->nlp_DID;
6128 cmdsize = (sizeof(uint32_t) + sizeof(struct serv_parm));
6129 elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp, did,
6132 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
6133 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
6134 "0255 Issue FDISC: no IOCB\n");
6138 icmd = &elsiocb->iocb;
6139 icmd->un.elsreq64.myID = 0;
6140 icmd->un.elsreq64.fl = 1;
6142 if (phba->sli_rev == LPFC_SLI_REV4) {
6143 /* FDISC needs to be 1 for WQE VPI */
6144 elsiocb->iocb.ulpCt_h = (SLI4_CT_VPI >> 1) & 1;
6145 elsiocb->iocb.ulpCt_l = SLI4_CT_VPI & 1 ;
6146 /* Set the ulpContext to the vpi */
6147 elsiocb->iocb.ulpContext = vport->vpi + phba->vpi_base;
6149 /* For FDISC, Let FDISC rsp set the NPortID for this VPI */
6154 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
6155 *((uint32_t *) (pcmd)) = ELS_CMD_FDISC;
6156 pcmd += sizeof(uint32_t); /* CSP Word 1 */
6157 memcpy(pcmd, &vport->phba->pport->fc_sparam, sizeof(struct serv_parm));
6158 sp = (struct serv_parm *) pcmd;
6159 /* Setup CSPs accordingly for Fabric */
6160 sp->cmn.e_d_tov = 0;
6161 sp->cmn.w2.r_a_tov = 0;
6162 sp->cls1.classValid = 0;
6163 sp->cls2.seqDelivery = 1;
6164 sp->cls3.seqDelivery = 1;
6166 pcmd += sizeof(uint32_t); /* CSP Word 2 */
6167 pcmd += sizeof(uint32_t); /* CSP Word 3 */
6168 pcmd += sizeof(uint32_t); /* CSP Word 4 */
6169 pcmd += sizeof(uint32_t); /* Port Name */
6170 memcpy(pcmd, &vport->fc_portname, 8);
6171 pcmd += sizeof(uint32_t); /* Node Name */
6172 pcmd += sizeof(uint32_t); /* Node Name */
6173 memcpy(pcmd, &vport->fc_nodename, 8);
6175 lpfc_set_disctmo(vport);
6177 phba->fc_stat.elsXmitFDISC++;
6178 elsiocb->iocb_cmpl = lpfc_cmpl_els_fdisc;
6180 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
6181 "Issue FDISC: did:x%x",
6184 rc = lpfc_issue_fabric_iocb(phba, elsiocb);
6185 if (rc == IOCB_ERROR) {
6186 lpfc_els_free_iocb(phba, elsiocb);
6187 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
6188 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
6189 "0256 Issue FDISC: Cannot send IOCB\n");
6192 lpfc_vport_set_state(vport, FC_VPORT_INITIALIZING);
6193 vport->port_state = LPFC_FDISC;
6198 * lpfc_cmpl_els_npiv_logo - Completion function with vport logo
6199 * @phba: pointer to lpfc hba data structure.
6200 * @cmdiocb: pointer to lpfc command iocb data structure.
6201 * @rspiocb: pointer to lpfc response iocb data structure.
6203 * This routine is the completion callback function to the issuing of a LOGO
6204 * ELS command off a vport. It frees the command IOCB and then decrement the
6205 * reference count held on ndlp for this completion function, indicating that
6206 * the reference to the ndlp is no long needed. Note that the
6207 * lpfc_els_free_iocb() routine decrements the ndlp reference held for this
6208 * callback function and an additional explicit ndlp reference decrementation
6209 * will trigger the actual release of the ndlp.
6212 lpfc_cmpl_els_npiv_logo(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
6213 struct lpfc_iocbq *rspiocb)
6215 struct lpfc_vport *vport = cmdiocb->vport;
6217 struct lpfc_nodelist *ndlp;
6218 ndlp = (struct lpfc_nodelist *)cmdiocb->context1;
6220 irsp = &rspiocb->iocb;
6221 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
6222 "LOGO npiv cmpl: status:x%x/x%x did:x%x",
6223 irsp->ulpStatus, irsp->un.ulpWord[4], irsp->un.rcvels.remoteID);
6225 lpfc_els_free_iocb(phba, cmdiocb);
6226 vport->unreg_vpi_cmpl = VPORT_ERROR;
6228 /* Trigger the release of the ndlp after logo */
6233 * lpfc_issue_els_npiv_logo - Issue a logo off a vport
6234 * @vport: pointer to a virtual N_Port data structure.
6235 * @ndlp: pointer to a node-list data structure.
6237 * This routine issues a LOGO ELS command to an @ndlp off a @vport.
6239 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
6240 * will be incremented by 1 for holding the ndlp and the reference to ndlp
6241 * will be stored into the context1 field of the IOCB for the completion
6242 * callback function to the LOGO ELS command.
6245 * 0 - Successfully issued logo off the @vport
6246 * 1 - Failed to issue logo off the @vport
6249 lpfc_issue_els_npiv_logo(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
6251 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
6252 struct lpfc_hba *phba = vport->phba;
6254 struct lpfc_iocbq *elsiocb;
6258 cmdsize = 2 * sizeof(uint32_t) + sizeof(struct lpfc_name);
6259 elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, 0, ndlp, ndlp->nlp_DID,
6264 icmd = &elsiocb->iocb;
6265 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
6266 *((uint32_t *) (pcmd)) = ELS_CMD_LOGO;
6267 pcmd += sizeof(uint32_t);
6269 /* Fill in LOGO payload */
6270 *((uint32_t *) (pcmd)) = be32_to_cpu(vport->fc_myDID);
6271 pcmd += sizeof(uint32_t);
6272 memcpy(pcmd, &vport->fc_portname, sizeof(struct lpfc_name));
6274 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
6275 "Issue LOGO npiv did:x%x flg:x%x",
6276 ndlp->nlp_DID, ndlp->nlp_flag, 0);
6278 elsiocb->iocb_cmpl = lpfc_cmpl_els_npiv_logo;
6279 spin_lock_irq(shost->host_lock);
6280 ndlp->nlp_flag |= NLP_LOGO_SND;
6281 spin_unlock_irq(shost->host_lock);
6282 if (lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0) ==
6284 spin_lock_irq(shost->host_lock);
6285 ndlp->nlp_flag &= ~NLP_LOGO_SND;
6286 spin_unlock_irq(shost->host_lock);
6287 lpfc_els_free_iocb(phba, elsiocb);
6294 * lpfc_fabric_block_timeout - Handler function to the fabric block timer
6295 * @ptr: holder for the timer function associated data.
6297 * This routine is invoked by the fabric iocb block timer after
6298 * timeout. It posts the fabric iocb block timeout event by setting the
6299 * WORKER_FABRIC_BLOCK_TMO bit to work port event bitmap and then invokes
6300 * lpfc_worker_wake_up() routine to wake up the worker thread. It is for
6301 * the worker thread to invoke the lpfc_unblock_fabric_iocbs() on the
6302 * posted event WORKER_FABRIC_BLOCK_TMO.
6305 lpfc_fabric_block_timeout(unsigned long ptr)
6307 struct lpfc_hba *phba = (struct lpfc_hba *) ptr;
6308 unsigned long iflags;
6309 uint32_t tmo_posted;
6311 spin_lock_irqsave(&phba->pport->work_port_lock, iflags);
6312 tmo_posted = phba->pport->work_port_events & WORKER_FABRIC_BLOCK_TMO;
6314 phba->pport->work_port_events |= WORKER_FABRIC_BLOCK_TMO;
6315 spin_unlock_irqrestore(&phba->pport->work_port_lock, iflags);
6318 lpfc_worker_wake_up(phba);
6323 * lpfc_resume_fabric_iocbs - Issue a fabric iocb from driver internal list
6324 * @phba: pointer to lpfc hba data structure.
6326 * This routine issues one fabric iocb from the driver internal list to
6327 * the HBA. It first checks whether it's ready to issue one fabric iocb to
6328 * the HBA (whether there is no outstanding fabric iocb). If so, it shall
6329 * remove one pending fabric iocb from the driver internal list and invokes
6330 * lpfc_sli_issue_iocb() routine to send the fabric iocb to the HBA.
6333 lpfc_resume_fabric_iocbs(struct lpfc_hba *phba)
6335 struct lpfc_iocbq *iocb;
6336 unsigned long iflags;
6342 spin_lock_irqsave(&phba->hbalock, iflags);
6343 /* Post any pending iocb to the SLI layer */
6344 if (atomic_read(&phba->fabric_iocb_count) == 0) {
6345 list_remove_head(&phba->fabric_iocb_list, iocb, typeof(*iocb),
6348 /* Increment fabric iocb count to hold the position */
6349 atomic_inc(&phba->fabric_iocb_count);
6351 spin_unlock_irqrestore(&phba->hbalock, iflags);
6353 iocb->fabric_iocb_cmpl = iocb->iocb_cmpl;
6354 iocb->iocb_cmpl = lpfc_cmpl_fabric_iocb;
6355 iocb->iocb_flag |= LPFC_IO_FABRIC;
6357 lpfc_debugfs_disc_trc(iocb->vport, LPFC_DISC_TRC_ELS_CMD,
6358 "Fabric sched1: ste:x%x",
6359 iocb->vport->port_state, 0, 0);
6361 ret = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, iocb, 0);
6363 if (ret == IOCB_ERROR) {
6364 iocb->iocb_cmpl = iocb->fabric_iocb_cmpl;
6365 iocb->fabric_iocb_cmpl = NULL;
6366 iocb->iocb_flag &= ~LPFC_IO_FABRIC;
6368 cmd->ulpStatus = IOSTAT_LOCAL_REJECT;
6369 cmd->un.ulpWord[4] = IOERR_SLI_ABORTED;
6370 iocb->iocb_cmpl(phba, iocb, iocb);
6372 atomic_dec(&phba->fabric_iocb_count);
6381 * lpfc_unblock_fabric_iocbs - Unblock issuing fabric iocb command
6382 * @phba: pointer to lpfc hba data structure.
6384 * This routine unblocks the issuing fabric iocb command. The function
6385 * will clear the fabric iocb block bit and then invoke the routine
6386 * lpfc_resume_fabric_iocbs() to issue one of the pending fabric iocb
6387 * from the driver internal fabric iocb list.
6390 lpfc_unblock_fabric_iocbs(struct lpfc_hba *phba)
6392 clear_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags);
6394 lpfc_resume_fabric_iocbs(phba);
6399 * lpfc_block_fabric_iocbs - Block issuing fabric iocb command
6400 * @phba: pointer to lpfc hba data structure.
6402 * This routine blocks the issuing fabric iocb for a specified amount of
6403 * time (currently 100 ms). This is done by set the fabric iocb block bit
6404 * and set up a timeout timer for 100ms. When the block bit is set, no more
6405 * fabric iocb will be issued out of the HBA.
6408 lpfc_block_fabric_iocbs(struct lpfc_hba *phba)
6412 blocked = test_and_set_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags);
6413 /* Start a timer to unblock fabric iocbs after 100ms */
6415 mod_timer(&phba->fabric_block_timer, jiffies + HZ/10 );
6421 * lpfc_cmpl_fabric_iocb - Completion callback function for fabric iocb
6422 * @phba: pointer to lpfc hba data structure.
6423 * @cmdiocb: pointer to lpfc command iocb data structure.
6424 * @rspiocb: pointer to lpfc response iocb data structure.
6426 * This routine is the callback function that is put to the fabric iocb's
6427 * callback function pointer (iocb->iocb_cmpl). The original iocb's callback
6428 * function pointer has been stored in iocb->fabric_iocb_cmpl. This callback
6429 * function first restores and invokes the original iocb's callback function
6430 * and then invokes the lpfc_resume_fabric_iocbs() routine to issue the next
6431 * fabric bound iocb from the driver internal fabric iocb list onto the wire.
6434 lpfc_cmpl_fabric_iocb(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
6435 struct lpfc_iocbq *rspiocb)
6439 if ((cmdiocb->iocb_flag & LPFC_IO_FABRIC) != LPFC_IO_FABRIC)
6442 switch (rspiocb->iocb.ulpStatus) {
6443 case IOSTAT_NPORT_RJT:
6444 case IOSTAT_FABRIC_RJT:
6445 if (rspiocb->iocb.un.ulpWord[4] & RJT_UNAVAIL_TEMP) {
6446 lpfc_block_fabric_iocbs(phba);
6450 case IOSTAT_NPORT_BSY:
6451 case IOSTAT_FABRIC_BSY:
6452 lpfc_block_fabric_iocbs(phba);
6456 stat.un.lsRjtError =
6457 be32_to_cpu(rspiocb->iocb.un.ulpWord[4]);
6458 if ((stat.un.b.lsRjtRsnCode == LSRJT_UNABLE_TPC) ||
6459 (stat.un.b.lsRjtRsnCode == LSRJT_LOGICAL_BSY))
6460 lpfc_block_fabric_iocbs(phba);
6464 if (atomic_read(&phba->fabric_iocb_count) == 0)
6467 cmdiocb->iocb_cmpl = cmdiocb->fabric_iocb_cmpl;
6468 cmdiocb->fabric_iocb_cmpl = NULL;
6469 cmdiocb->iocb_flag &= ~LPFC_IO_FABRIC;
6470 cmdiocb->iocb_cmpl(phba, cmdiocb, rspiocb);
6472 atomic_dec(&phba->fabric_iocb_count);
6473 if (!test_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags)) {
6474 /* Post any pending iocbs to HBA */
6475 lpfc_resume_fabric_iocbs(phba);
6480 * lpfc_issue_fabric_iocb - Issue a fabric iocb command
6481 * @phba: pointer to lpfc hba data structure.
6482 * @iocb: pointer to lpfc command iocb data structure.
6484 * This routine is used as the top-level API for issuing a fabric iocb command
6485 * such as FLOGI and FDISC. To accommodate certain switch fabric, this driver
6486 * function makes sure that only one fabric bound iocb will be outstanding at
6487 * any given time. As such, this function will first check to see whether there
6488 * is already an outstanding fabric iocb on the wire. If so, it will put the
6489 * newly issued iocb onto the driver internal fabric iocb list, waiting to be
6490 * issued later. Otherwise, it will issue the iocb on the wire and update the
6491 * fabric iocb count it indicate that there is one fabric iocb on the wire.
6493 * Note, this implementation has a potential sending out fabric IOCBs out of
6494 * order. The problem is caused by the construction of the "ready" boolen does
6495 * not include the condition that the internal fabric IOCB list is empty. As
6496 * such, it is possible a fabric IOCB issued by this routine might be "jump"
6497 * ahead of the fabric IOCBs in the internal list.
6500 * IOCB_SUCCESS - either fabric iocb put on the list or issued successfully
6501 * IOCB_ERROR - failed to issue fabric iocb
6504 lpfc_issue_fabric_iocb(struct lpfc_hba *phba, struct lpfc_iocbq *iocb)
6506 unsigned long iflags;
6510 if (atomic_read(&phba->fabric_iocb_count) > 1)
6513 spin_lock_irqsave(&phba->hbalock, iflags);
6514 ready = atomic_read(&phba->fabric_iocb_count) == 0 &&
6515 !test_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags);
6518 /* Increment fabric iocb count to hold the position */
6519 atomic_inc(&phba->fabric_iocb_count);
6520 spin_unlock_irqrestore(&phba->hbalock, iflags);
6522 iocb->fabric_iocb_cmpl = iocb->iocb_cmpl;
6523 iocb->iocb_cmpl = lpfc_cmpl_fabric_iocb;
6524 iocb->iocb_flag |= LPFC_IO_FABRIC;
6526 lpfc_debugfs_disc_trc(iocb->vport, LPFC_DISC_TRC_ELS_CMD,
6527 "Fabric sched2: ste:x%x",
6528 iocb->vport->port_state, 0, 0);
6530 ret = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, iocb, 0);
6532 if (ret == IOCB_ERROR) {
6533 iocb->iocb_cmpl = iocb->fabric_iocb_cmpl;
6534 iocb->fabric_iocb_cmpl = NULL;
6535 iocb->iocb_flag &= ~LPFC_IO_FABRIC;
6536 atomic_dec(&phba->fabric_iocb_count);
6539 spin_lock_irqsave(&phba->hbalock, iflags);
6540 list_add_tail(&iocb->list, &phba->fabric_iocb_list);
6541 spin_unlock_irqrestore(&phba->hbalock, iflags);
6548 * lpfc_fabric_abort_vport - Abort a vport's iocbs from driver fabric iocb list
6549 * @vport: pointer to a virtual N_Port data structure.
6551 * This routine aborts all the IOCBs associated with a @vport from the
6552 * driver internal fabric IOCB list. The list contains fabric IOCBs to be
6553 * issued to the ELS IOCB ring. This abort function walks the fabric IOCB
6554 * list, removes each IOCB associated with the @vport off the list, set the
6555 * status feild to IOSTAT_LOCAL_REJECT, and invokes the callback function
6556 * associated with the IOCB.
6558 static void lpfc_fabric_abort_vport(struct lpfc_vport *vport)
6560 LIST_HEAD(completions);
6561 struct lpfc_hba *phba = vport->phba;
6562 struct lpfc_iocbq *tmp_iocb, *piocb;
6564 spin_lock_irq(&phba->hbalock);
6565 list_for_each_entry_safe(piocb, tmp_iocb, &phba->fabric_iocb_list,
6568 if (piocb->vport != vport)
6571 list_move_tail(&piocb->list, &completions);
6573 spin_unlock_irq(&phba->hbalock);
6575 /* Cancel all the IOCBs from the completions list */
6576 lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
6581 * lpfc_fabric_abort_nport - Abort a ndlp's iocbs from driver fabric iocb list
6582 * @ndlp: pointer to a node-list data structure.
6584 * This routine aborts all the IOCBs associated with an @ndlp from the
6585 * driver internal fabric IOCB list. The list contains fabric IOCBs to be
6586 * issued to the ELS IOCB ring. This abort function walks the fabric IOCB
6587 * list, removes each IOCB associated with the @ndlp off the list, set the
6588 * status feild to IOSTAT_LOCAL_REJECT, and invokes the callback function
6589 * associated with the IOCB.
6591 void lpfc_fabric_abort_nport(struct lpfc_nodelist *ndlp)
6593 LIST_HEAD(completions);
6594 struct lpfc_hba *phba = ndlp->phba;
6595 struct lpfc_iocbq *tmp_iocb, *piocb;
6596 struct lpfc_sli_ring *pring = &phba->sli.ring[LPFC_ELS_RING];
6598 spin_lock_irq(&phba->hbalock);
6599 list_for_each_entry_safe(piocb, tmp_iocb, &phba->fabric_iocb_list,
6601 if ((lpfc_check_sli_ndlp(phba, pring, piocb, ndlp))) {
6603 list_move_tail(&piocb->list, &completions);
6606 spin_unlock_irq(&phba->hbalock);
6608 /* Cancel all the IOCBs from the completions list */
6609 lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
6614 * lpfc_fabric_abort_hba - Abort all iocbs on driver fabric iocb list
6615 * @phba: pointer to lpfc hba data structure.
6617 * This routine aborts all the IOCBs currently on the driver internal
6618 * fabric IOCB list. The list contains fabric IOCBs to be issued to the ELS
6619 * IOCB ring. This function takes the entire IOCB list off the fabric IOCB
6620 * list, removes IOCBs off the list, set the status feild to
6621 * IOSTAT_LOCAL_REJECT, and invokes the callback function associated with
6624 void lpfc_fabric_abort_hba(struct lpfc_hba *phba)
6626 LIST_HEAD(completions);
6628 spin_lock_irq(&phba->hbalock);
6629 list_splice_init(&phba->fabric_iocb_list, &completions);
6630 spin_unlock_irq(&phba->hbalock);
6632 /* Cancel all the IOCBs from the completions list */
6633 lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
6638 * lpfc_sli4_els_xri_aborted - Slow-path process of els xri abort
6639 * @phba: pointer to lpfc hba data structure.
6640 * @axri: pointer to the els xri abort wcqe structure.
6642 * This routine is invoked by the worker thread to process a SLI4 slow-path
6646 lpfc_sli4_els_xri_aborted(struct lpfc_hba *phba,
6647 struct sli4_wcqe_xri_aborted *axri)
6649 uint16_t xri = bf_get(lpfc_wcqe_xa_xri, axri);
6650 struct lpfc_sglq *sglq_entry = NULL, *sglq_next = NULL;
6651 unsigned long iflag = 0;
6653 spin_lock_irqsave(&phba->sli4_hba.abts_sgl_list_lock, iflag);
6654 list_for_each_entry_safe(sglq_entry, sglq_next,
6655 &phba->sli4_hba.lpfc_abts_els_sgl_list, list) {
6656 if (sglq_entry->sli4_xritag == xri) {
6657 list_del(&sglq_entry->list);
6658 spin_unlock_irqrestore(
6659 &phba->sli4_hba.abts_sgl_list_lock,
6661 spin_lock_irqsave(&phba->hbalock, iflag);
6663 list_add_tail(&sglq_entry->list,
6664 &phba->sli4_hba.lpfc_sgl_list);
6665 spin_unlock_irqrestore(&phba->hbalock, iflag);
6669 spin_unlock_irqrestore(&phba->sli4_hba.abts_sgl_list_lock, iflag);