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/slab.h>
25 #include <linux/interrupt.h>
27 #include <scsi/scsi.h>
28 #include <scsi/scsi_device.h>
29 #include <scsi/scsi_host.h>
30 #include <scsi/scsi_transport_fc.h>
35 #include "lpfc_sli4.h"
37 #include "lpfc_disc.h"
38 #include "lpfc_scsi.h"
40 #include "lpfc_logmsg.h"
41 #include "lpfc_crtn.h"
42 #include "lpfc_vport.h"
43 #include "lpfc_debugfs.h"
45 static int lpfc_els_retry(struct lpfc_hba *, struct lpfc_iocbq *,
47 static void lpfc_cmpl_fabric_iocb(struct lpfc_hba *, struct lpfc_iocbq *,
49 static void lpfc_fabric_abort_vport(struct lpfc_vport *vport);
50 static int lpfc_issue_els_fdisc(struct lpfc_vport *vport,
51 struct lpfc_nodelist *ndlp, uint8_t retry);
52 static int lpfc_issue_fabric_iocb(struct lpfc_hba *phba,
53 struct lpfc_iocbq *iocb);
55 static int lpfc_max_els_tries = 3;
58 * lpfc_els_chk_latt - Check host link attention event for a vport
59 * @vport: pointer to a host virtual N_Port data structure.
61 * This routine checks whether there is an outstanding host link
62 * attention event during the discovery process with the @vport. It is done
63 * by reading the HBA's Host Attention (HA) register. If there is any host
64 * link attention events during this @vport's discovery process, the @vport
65 * shall be marked as FC_ABORT_DISCOVERY, a host link attention clear shall
66 * be issued if the link state is not already in host link cleared state,
67 * and a return code shall indicate whether the host link attention event
70 * Note that, if either the host link is in state LPFC_LINK_DOWN or @vport
71 * state in LPFC_VPORT_READY, the request for checking host link attention
72 * event will be ignored and a return code shall indicate no host link
73 * attention event had happened.
76 * 0 - no host link attention event happened
77 * 1 - host link attention event happened
80 lpfc_els_chk_latt(struct lpfc_vport *vport)
82 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
83 struct lpfc_hba *phba = vport->phba;
86 if (vport->port_state >= LPFC_VPORT_READY ||
87 phba->link_state == LPFC_LINK_DOWN ||
88 phba->sli_rev > LPFC_SLI_REV3)
91 /* Read the HBA Host Attention Register */
92 ha_copy = readl(phba->HAregaddr);
94 if (!(ha_copy & HA_LATT))
97 /* Pending Link Event during Discovery */
98 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
99 "0237 Pending Link Event during "
100 "Discovery: State x%x\n",
101 phba->pport->port_state);
103 /* CLEAR_LA should re-enable link attention events and
104 * we should then imediately take a LATT event. The
105 * LATT processing should call lpfc_linkdown() which
106 * will cleanup any left over in-progress discovery
109 spin_lock_irq(shost->host_lock);
110 vport->fc_flag |= FC_ABORT_DISCOVERY;
111 spin_unlock_irq(shost->host_lock);
113 if (phba->link_state != LPFC_CLEAR_LA)
114 lpfc_issue_clear_la(phba, vport);
120 * lpfc_prep_els_iocb - Allocate and prepare a lpfc iocb data structure
121 * @vport: pointer to a host virtual N_Port data structure.
122 * @expectRsp: flag indicating whether response is expected.
123 * @cmdSize: size of the ELS command.
124 * @retry: number of retries to the command IOCB when it fails.
125 * @ndlp: pointer to a node-list data structure.
126 * @did: destination identifier.
127 * @elscmd: the ELS command code.
129 * This routine is used for allocating a lpfc-IOCB data structure from
130 * the driver lpfc-IOCB free-list and prepare the IOCB with the parameters
131 * passed into the routine for discovery state machine to issue an Extended
132 * Link Service (ELS) commands. It is a generic lpfc-IOCB allocation
133 * and preparation routine that is used by all the discovery state machine
134 * routines and the ELS command-specific fields will be later set up by
135 * the individual discovery machine routines after calling this routine
136 * allocating and preparing a generic IOCB data structure. It fills in the
137 * Buffer Descriptor Entries (BDEs), allocates buffers for both command
138 * payload and response payload (if expected). The reference count on the
139 * ndlp is incremented by 1 and the reference to the ndlp is put into
140 * context1 of the IOCB data structure for this IOCB to hold the ndlp
141 * reference for the command's callback function to access later.
144 * Pointer to the newly allocated/prepared els iocb data structure
145 * NULL - when els iocb data structure allocation/preparation failed
148 lpfc_prep_els_iocb(struct lpfc_vport *vport, uint8_t expectRsp,
149 uint16_t cmdSize, uint8_t retry,
150 struct lpfc_nodelist *ndlp, uint32_t did,
153 struct lpfc_hba *phba = vport->phba;
154 struct lpfc_iocbq *elsiocb;
155 struct lpfc_dmabuf *pcmd, *prsp, *pbuflist;
156 struct ulp_bde64 *bpl;
160 if (!lpfc_is_link_up(phba))
163 /* Allocate buffer for command iocb */
164 elsiocb = lpfc_sli_get_iocbq(phba);
170 * If this command is for fabric controller and HBA running
171 * in FIP mode send FLOGI, FDISC and LOGO as FIP frames.
173 if ((did == Fabric_DID) &&
174 (phba->hba_flag & HBA_FIP_SUPPORT) &&
175 ((elscmd == ELS_CMD_FLOGI) ||
176 (elscmd == ELS_CMD_FDISC) ||
177 (elscmd == ELS_CMD_LOGO)))
180 elsiocb->iocb_flag |= ((ELS_ID_FLOGI << LPFC_FIP_ELS_ID_SHIFT)
181 & LPFC_FIP_ELS_ID_MASK);
184 elsiocb->iocb_flag |= ((ELS_ID_FDISC << LPFC_FIP_ELS_ID_SHIFT)
185 & LPFC_FIP_ELS_ID_MASK);
188 elsiocb->iocb_flag |= ((ELS_ID_LOGO << LPFC_FIP_ELS_ID_SHIFT)
189 & LPFC_FIP_ELS_ID_MASK);
193 elsiocb->iocb_flag &= ~LPFC_FIP_ELS_ID_MASK;
195 icmd = &elsiocb->iocb;
197 /* fill in BDEs for command */
198 /* Allocate buffer for command payload */
199 pcmd = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
201 pcmd->virt = lpfc_mbuf_alloc(phba, MEM_PRI, &pcmd->phys);
202 if (!pcmd || !pcmd->virt)
203 goto els_iocb_free_pcmb_exit;
205 INIT_LIST_HEAD(&pcmd->list);
207 /* Allocate buffer for response payload */
209 prsp = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
211 prsp->virt = lpfc_mbuf_alloc(phba, MEM_PRI,
213 if (!prsp || !prsp->virt)
214 goto els_iocb_free_prsp_exit;
215 INIT_LIST_HEAD(&prsp->list);
219 /* Allocate buffer for Buffer ptr list */
220 pbuflist = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
222 pbuflist->virt = lpfc_mbuf_alloc(phba, MEM_PRI,
224 if (!pbuflist || !pbuflist->virt)
225 goto els_iocb_free_pbuf_exit;
227 INIT_LIST_HEAD(&pbuflist->list);
229 icmd->un.elsreq64.bdl.addrHigh = putPaddrHigh(pbuflist->phys);
230 icmd->un.elsreq64.bdl.addrLow = putPaddrLow(pbuflist->phys);
231 icmd->un.elsreq64.bdl.bdeFlags = BUFF_TYPE_BLP_64;
232 icmd->un.elsreq64.remoteID = did; /* DID */
234 icmd->un.elsreq64.bdl.bdeSize = (2 * sizeof(struct ulp_bde64));
235 icmd->ulpCommand = CMD_ELS_REQUEST64_CR;
236 icmd->ulpTimeout = phba->fc_ratov * 2;
238 icmd->un.elsreq64.bdl.bdeSize = sizeof(struct ulp_bde64);
239 icmd->ulpCommand = CMD_XMIT_ELS_RSP64_CX;
241 icmd->ulpBdeCount = 1;
243 icmd->ulpClass = CLASS3;
245 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) {
246 icmd->un.elsreq64.myID = vport->fc_myDID;
248 /* For ELS_REQUEST64_CR, use the VPI by default */
249 icmd->ulpContext = vport->vpi + phba->vpi_base;
251 /* The CT field must be 0=INVALID_RPI for the ECHO cmd */
252 if (elscmd == ELS_CMD_ECHO)
253 icmd->ulpCt_l = 0; /* context = invalid RPI */
255 icmd->ulpCt_l = 1; /* context = VPI */
258 bpl = (struct ulp_bde64 *) pbuflist->virt;
259 bpl->addrLow = le32_to_cpu(putPaddrLow(pcmd->phys));
260 bpl->addrHigh = le32_to_cpu(putPaddrHigh(pcmd->phys));
261 bpl->tus.f.bdeSize = cmdSize;
262 bpl->tus.f.bdeFlags = 0;
263 bpl->tus.w = le32_to_cpu(bpl->tus.w);
267 bpl->addrLow = le32_to_cpu(putPaddrLow(prsp->phys));
268 bpl->addrHigh = le32_to_cpu(putPaddrHigh(prsp->phys));
269 bpl->tus.f.bdeSize = FCELSSIZE;
270 bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64;
271 bpl->tus.w = le32_to_cpu(bpl->tus.w);
274 /* prevent preparing iocb with NULL ndlp reference */
275 elsiocb->context1 = lpfc_nlp_get(ndlp);
276 if (!elsiocb->context1)
277 goto els_iocb_free_pbuf_exit;
278 elsiocb->context2 = pcmd;
279 elsiocb->context3 = pbuflist;
280 elsiocb->retry = retry;
281 elsiocb->vport = vport;
282 elsiocb->drvrTimeout = (phba->fc_ratov << 1) + LPFC_DRVR_TIMEOUT;
285 list_add(&prsp->list, &pcmd->list);
288 /* Xmit ELS command <elsCmd> to remote NPORT <did> */
289 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
290 "0116 Xmit ELS command x%x to remote "
291 "NPORT x%x I/O tag: x%x, port state: x%x\n",
292 elscmd, did, elsiocb->iotag,
295 /* Xmit ELS response <elsCmd> to remote NPORT <did> */
296 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
297 "0117 Xmit ELS response x%x to remote "
298 "NPORT x%x I/O tag: x%x, size: x%x\n",
299 elscmd, ndlp->nlp_DID, elsiocb->iotag,
304 els_iocb_free_pbuf_exit:
306 lpfc_mbuf_free(phba, prsp->virt, prsp->phys);
309 els_iocb_free_prsp_exit:
310 lpfc_mbuf_free(phba, pcmd->virt, pcmd->phys);
313 els_iocb_free_pcmb_exit:
315 lpfc_sli_release_iocbq(phba, elsiocb);
320 * lpfc_issue_fabric_reglogin - Issue fabric registration login for a vport
321 * @vport: pointer to a host virtual N_Port data structure.
323 * This routine issues a fabric registration login for a @vport. An
324 * active ndlp node with Fabric_DID must already exist for this @vport.
325 * The routine invokes two mailbox commands to carry out fabric registration
326 * login through the HBA firmware: the first mailbox command requests the
327 * HBA to perform link configuration for the @vport; and the second mailbox
328 * command requests the HBA to perform the actual fabric registration login
332 * 0 - successfully issued fabric registration login for @vport
333 * -ENXIO -- failed to issue fabric registration login for @vport
336 lpfc_issue_fabric_reglogin(struct lpfc_vport *vport)
338 struct lpfc_hba *phba = vport->phba;
340 struct lpfc_dmabuf *mp;
341 struct lpfc_nodelist *ndlp;
342 struct serv_parm *sp;
346 sp = &phba->fc_fabparam;
347 ndlp = lpfc_findnode_did(vport, Fabric_DID);
348 if (!ndlp || !NLP_CHK_NODE_ACT(ndlp)) {
353 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
359 vport->port_state = LPFC_FABRIC_CFG_LINK;
360 lpfc_config_link(phba, mbox);
361 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
364 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
365 if (rc == MBX_NOT_FINISHED) {
370 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
375 rc = lpfc_reg_rpi(phba, vport->vpi, Fabric_DID, (uint8_t *)sp, mbox, 0);
381 mbox->mbox_cmpl = lpfc_mbx_cmpl_fabric_reg_login;
383 /* increment the reference count on ndlp to hold reference
384 * for the callback routine.
386 mbox->context2 = lpfc_nlp_get(ndlp);
388 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
389 if (rc == MBX_NOT_FINISHED) {
391 goto fail_issue_reg_login;
396 fail_issue_reg_login:
397 /* decrement the reference count on ndlp just incremented
398 * for the failed mbox command.
401 mp = (struct lpfc_dmabuf *) mbox->context1;
402 lpfc_mbuf_free(phba, mp->virt, mp->phys);
405 mempool_free(mbox, phba->mbox_mem_pool);
408 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
409 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
410 "0249 Cannot issue Register Fabric login: Err %d\n", err);
415 * lpfc_issue_reg_vfi - Register VFI for this vport's fabric login
416 * @vport: pointer to a host virtual N_Port data structure.
418 * This routine issues a REG_VFI mailbox for the vfi, vpi, fcfi triplet for
419 * the @vport. This mailbox command is necessary for FCoE only.
422 * 0 - successfully issued REG_VFI for @vport
423 * A failure code otherwise.
426 lpfc_issue_reg_vfi(struct lpfc_vport *vport)
428 struct lpfc_hba *phba = vport->phba;
430 struct lpfc_nodelist *ndlp;
431 struct serv_parm *sp;
432 struct lpfc_dmabuf *dmabuf;
435 sp = &phba->fc_fabparam;
436 ndlp = lpfc_findnode_did(vport, Fabric_DID);
437 if (!ndlp || !NLP_CHK_NODE_ACT(ndlp)) {
442 dmabuf = kzalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
447 dmabuf->virt = lpfc_mbuf_alloc(phba, MEM_PRI, &dmabuf->phys);
450 goto fail_free_dmabuf;
452 mboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
455 goto fail_free_coherent;
457 vport->port_state = LPFC_FABRIC_CFG_LINK;
458 memcpy(dmabuf->virt, &phba->fc_fabparam, sizeof(vport->fc_sparam));
459 lpfc_reg_vfi(mboxq, vport, dmabuf->phys);
460 mboxq->mbox_cmpl = lpfc_mbx_cmpl_reg_vfi;
461 mboxq->vport = vport;
462 mboxq->context1 = dmabuf;
463 rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_NOWAIT);
464 if (rc == MBX_NOT_FINISHED) {
471 mempool_free(mboxq, phba->mbox_mem_pool);
473 lpfc_mbuf_free(phba, dmabuf->virt, dmabuf->phys);
477 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
478 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
479 "0289 Issue Register VFI failed: Err %d\n", rc);
484 * lpfc_cmpl_els_flogi_fabric - Completion function for flogi to a fabric port
485 * @vport: pointer to a host virtual N_Port data structure.
486 * @ndlp: pointer to a node-list data structure.
487 * @sp: pointer to service parameter data structure.
488 * @irsp: pointer to the IOCB within the lpfc response IOCB.
490 * This routine is invoked by the lpfc_cmpl_els_flogi() completion callback
491 * function to handle the completion of a Fabric Login (FLOGI) into a fabric
492 * port in a fabric topology. It properly sets up the parameters to the @ndlp
493 * from the IOCB response. It also check the newly assigned N_Port ID to the
494 * @vport against the previously assigned N_Port ID. If it is different from
495 * the previously assigned Destination ID (DID), the lpfc_unreg_rpi() routine
496 * is invoked on all the remaining nodes with the @vport to unregister the
497 * Remote Port Indicators (RPIs). Finally, the lpfc_issue_fabric_reglogin()
498 * is invoked to register login to the fabric.
501 * 0 - Success (currently, always return 0)
504 lpfc_cmpl_els_flogi_fabric(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
505 struct serv_parm *sp, IOCB_t *irsp)
507 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
508 struct lpfc_hba *phba = vport->phba;
509 struct lpfc_nodelist *np;
510 struct lpfc_nodelist *next_np;
512 spin_lock_irq(shost->host_lock);
513 vport->fc_flag |= FC_FABRIC;
514 spin_unlock_irq(shost->host_lock);
516 phba->fc_edtov = be32_to_cpu(sp->cmn.e_d_tov);
517 if (sp->cmn.edtovResolution) /* E_D_TOV ticks are in nanoseconds */
518 phba->fc_edtov = (phba->fc_edtov + 999999) / 1000000;
520 phba->fc_ratov = (be32_to_cpu(sp->cmn.w2.r_a_tov) + 999) / 1000;
522 if (phba->fc_topology == TOPOLOGY_LOOP) {
523 spin_lock_irq(shost->host_lock);
524 vport->fc_flag |= FC_PUBLIC_LOOP;
525 spin_unlock_irq(shost->host_lock);
528 * If we are a N-port connected to a Fabric, fixup sparam's so
529 * logins to devices on remote loops work.
531 vport->fc_sparam.cmn.altBbCredit = 1;
534 vport->fc_myDID = irsp->un.ulpWord[4] & Mask_DID;
535 memcpy(&ndlp->nlp_portname, &sp->portName, sizeof(struct lpfc_name));
536 memcpy(&ndlp->nlp_nodename, &sp->nodeName, sizeof(struct lpfc_name));
537 ndlp->nlp_class_sup = 0;
538 if (sp->cls1.classValid)
539 ndlp->nlp_class_sup |= FC_COS_CLASS1;
540 if (sp->cls2.classValid)
541 ndlp->nlp_class_sup |= FC_COS_CLASS2;
542 if (sp->cls3.classValid)
543 ndlp->nlp_class_sup |= FC_COS_CLASS3;
544 if (sp->cls4.classValid)
545 ndlp->nlp_class_sup |= FC_COS_CLASS4;
546 ndlp->nlp_maxframe = ((sp->cmn.bbRcvSizeMsb & 0x0F) << 8) |
547 sp->cmn.bbRcvSizeLsb;
548 memcpy(&phba->fc_fabparam, sp, sizeof(struct serv_parm));
550 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) {
551 if (sp->cmn.response_multiple_NPort) {
552 lpfc_printf_vlog(vport, KERN_WARNING,
554 "1816 FLOGI NPIV supported, "
555 "response data 0x%x\n",
556 sp->cmn.response_multiple_NPort);
557 phba->link_flag |= LS_NPIV_FAB_SUPPORTED;
559 /* Because we asked f/w for NPIV it still expects us
560 to call reg_vnpid atleast for the physcial host */
561 lpfc_printf_vlog(vport, KERN_WARNING,
563 "1817 Fabric does not support NPIV "
564 "- configuring single port mode.\n");
565 phba->link_flag &= ~LS_NPIV_FAB_SUPPORTED;
569 if ((vport->fc_prevDID != vport->fc_myDID) &&
570 !(vport->fc_flag & FC_VPORT_NEEDS_REG_VPI)) {
572 /* If our NportID changed, we need to ensure all
573 * remaining NPORTs get unreg_login'ed.
575 list_for_each_entry_safe(np, next_np,
576 &vport->fc_nodes, nlp_listp) {
577 if (!NLP_CHK_NODE_ACT(np))
579 if ((np->nlp_state != NLP_STE_NPR_NODE) ||
580 !(np->nlp_flag & NLP_NPR_ADISC))
582 spin_lock_irq(shost->host_lock);
583 np->nlp_flag &= ~NLP_NPR_ADISC;
584 spin_unlock_irq(shost->host_lock);
585 lpfc_unreg_rpi(vport, np);
587 lpfc_cleanup_pending_mbox(vport);
588 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) {
589 lpfc_mbx_unreg_vpi(vport);
590 spin_lock_irq(shost->host_lock);
591 vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
592 spin_unlock_irq(shost->host_lock);
595 * If VPI is unreged, driver need to do INIT_VPI
596 * before re-registering
598 if (phba->sli_rev == LPFC_SLI_REV4) {
599 spin_lock_irq(shost->host_lock);
600 vport->fc_flag |= FC_VPORT_NEEDS_INIT_VPI;
601 spin_unlock_irq(shost->host_lock);
603 } else if ((phba->sli_rev == LPFC_SLI_REV4) &&
604 !(vport->fc_flag & FC_VPORT_NEEDS_REG_VPI)) {
606 * Driver needs to re-reg VPI in order for f/w
607 * to update the MAC address.
609 lpfc_register_new_vport(phba, vport, ndlp);
613 if (phba->sli_rev < LPFC_SLI_REV4) {
614 lpfc_nlp_set_state(vport, ndlp, NLP_STE_REG_LOGIN_ISSUE);
615 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED &&
616 vport->fc_flag & FC_VPORT_NEEDS_REG_VPI)
617 lpfc_register_new_vport(phba, vport, ndlp);
619 lpfc_issue_fabric_reglogin(vport);
621 ndlp->nlp_type |= NLP_FABRIC;
622 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
623 if ((!(vport->fc_flag & FC_VPORT_NEEDS_REG_VPI)) &&
624 (vport->vpi_state & LPFC_VPI_REGISTERED)) {
625 lpfc_start_fdiscs(phba);
626 lpfc_do_scr_ns_plogi(phba, vport);
627 } else if (vport->fc_flag & FC_VFI_REGISTERED)
628 lpfc_issue_init_vpi(vport);
630 lpfc_issue_reg_vfi(vport);
635 * lpfc_cmpl_els_flogi_nport - Completion function for flogi to an N_Port
636 * @vport: pointer to a host virtual N_Port data structure.
637 * @ndlp: pointer to a node-list data structure.
638 * @sp: pointer to service parameter data structure.
640 * This routine is invoked by the lpfc_cmpl_els_flogi() completion callback
641 * function to handle the completion of a Fabric Login (FLOGI) into an N_Port
642 * in a point-to-point topology. First, the @vport's N_Port Name is compared
643 * with the received N_Port Name: if the @vport's N_Port Name is greater than
644 * the received N_Port Name lexicographically, this node shall assign local
645 * N_Port ID (PT2PT_LocalID: 1) and remote N_Port ID (PT2PT_RemoteID: 2) and
646 * will send out Port Login (PLOGI) with the N_Port IDs assigned. Otherwise,
647 * this node shall just wait for the remote node to issue PLOGI and assign
655 lpfc_cmpl_els_flogi_nport(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
656 struct serv_parm *sp)
658 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
659 struct lpfc_hba *phba = vport->phba;
663 spin_lock_irq(shost->host_lock);
664 vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
665 spin_unlock_irq(shost->host_lock);
667 phba->fc_edtov = FF_DEF_EDTOV;
668 phba->fc_ratov = FF_DEF_RATOV;
669 rc = memcmp(&vport->fc_portname, &sp->portName,
670 sizeof(vport->fc_portname));
672 /* This side will initiate the PLOGI */
673 spin_lock_irq(shost->host_lock);
674 vport->fc_flag |= FC_PT2PT_PLOGI;
675 spin_unlock_irq(shost->host_lock);
678 * N_Port ID cannot be 0, set our to LocalID the other
679 * side will be RemoteID.
684 vport->fc_myDID = PT2PT_LocalID;
686 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
690 lpfc_config_link(phba, mbox);
692 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
694 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
695 if (rc == MBX_NOT_FINISHED) {
696 mempool_free(mbox, phba->mbox_mem_pool);
699 /* Decrement ndlp reference count indicating that ndlp can be
700 * safely released when other references to it are done.
704 ndlp = lpfc_findnode_did(vport, PT2PT_RemoteID);
707 * Cannot find existing Fabric ndlp, so allocate a
710 ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL);
713 lpfc_nlp_init(vport, ndlp, PT2PT_RemoteID);
714 } else if (!NLP_CHK_NODE_ACT(ndlp)) {
715 ndlp = lpfc_enable_node(vport, ndlp,
716 NLP_STE_UNUSED_NODE);
721 memcpy(&ndlp->nlp_portname, &sp->portName,
722 sizeof(struct lpfc_name));
723 memcpy(&ndlp->nlp_nodename, &sp->nodeName,
724 sizeof(struct lpfc_name));
725 /* Set state will put ndlp onto node list if not already done */
726 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
727 spin_lock_irq(shost->host_lock);
728 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
729 spin_unlock_irq(shost->host_lock);
731 /* This side will wait for the PLOGI, decrement ndlp reference
732 * count indicating that ndlp can be released when other
733 * references to it are done.
737 /* If we are pt2pt with another NPort, force NPIV off! */
738 phba->sli3_options &= ~LPFC_SLI3_NPIV_ENABLED;
740 spin_lock_irq(shost->host_lock);
741 vport->fc_flag |= FC_PT2PT;
742 spin_unlock_irq(shost->host_lock);
744 /* Start discovery - this should just do CLEAR_LA */
745 lpfc_disc_start(vport);
752 * lpfc_cmpl_els_flogi - Completion callback function for flogi
753 * @phba: pointer to lpfc hba data structure.
754 * @cmdiocb: pointer to lpfc command iocb data structure.
755 * @rspiocb: pointer to lpfc response iocb data structure.
757 * This routine is the top-level completion callback function for issuing
758 * a Fabric Login (FLOGI) command. If the response IOCB reported error,
759 * the lpfc_els_retry() routine shall be invoked to retry the FLOGI. If
760 * retry has been made (either immediately or delayed with lpfc_els_retry()
761 * returning 1), the command IOCB will be released and function returned.
762 * If the retry attempt has been given up (possibly reach the maximum
763 * number of retries), one additional decrement of ndlp reference shall be
764 * invoked before going out after releasing the command IOCB. This will
765 * actually release the remote node (Note, lpfc_els_free_iocb() will also
766 * invoke one decrement of ndlp reference count). If no error reported in
767 * the IOCB status, the command Port ID field is used to determine whether
768 * this is a point-to-point topology or a fabric topology: if the Port ID
769 * field is assigned, it is a fabric topology; otherwise, it is a
770 * point-to-point topology. The routine lpfc_cmpl_els_flogi_fabric() or
771 * lpfc_cmpl_els_flogi_nport() shall be invoked accordingly to handle the
772 * specific topology completion conditions.
775 lpfc_cmpl_els_flogi(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
776 struct lpfc_iocbq *rspiocb)
778 struct lpfc_vport *vport = cmdiocb->vport;
779 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
780 IOCB_t *irsp = &rspiocb->iocb;
781 struct lpfc_nodelist *ndlp = cmdiocb->context1;
782 struct lpfc_dmabuf *pcmd = cmdiocb->context2, *prsp;
783 struct serv_parm *sp;
787 /* Check to see if link went down during discovery */
788 if (lpfc_els_chk_latt(vport)) {
789 /* One additional decrement on node reference count to
790 * trigger the release of the node
796 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
797 "FLOGI cmpl: status:x%x/x%x state:x%x",
798 irsp->ulpStatus, irsp->un.ulpWord[4],
801 if (irsp->ulpStatus) {
803 * In case of FIP mode, perform round robin FCF failover
804 * due to new FCF discovery
806 if ((phba->hba_flag & HBA_FIP_SUPPORT) &&
807 (phba->fcf.fcf_flag & FCF_DISCOVERY) &&
808 (irsp->ulpStatus != IOSTAT_LOCAL_REJECT) &&
809 (irsp->un.ulpWord[4] != IOERR_SLI_ABORTED)) {
810 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP | LOG_ELS,
811 "2611 FLOGI failed on registered "
812 "FCF record fcf_index(%d), status: "
813 "x%x/x%x, tmo:x%x, trying to perform "
814 "round robin failover\n",
815 phba->fcf.current_rec.fcf_indx,
816 irsp->ulpStatus, irsp->un.ulpWord[4],
818 fcf_index = lpfc_sli4_fcf_rr_next_index_get(phba);
819 if (fcf_index == LPFC_FCOE_FCF_NEXT_NONE) {
821 * Exhausted the eligible FCF record list,
822 * fail through to retry FLOGI on current
825 lpfc_printf_log(phba, KERN_WARNING,
827 "2760 Completed one round "
828 "of FLOGI FCF round robin "
829 "failover list, retry FLOGI "
830 "on currently registered "
832 phba->fcf.current_rec.fcf_indx);
834 lpfc_printf_log(phba, KERN_INFO,
836 "2794 FLOGI FCF round robin "
837 "failover to FCF index x%x\n",
839 rc = lpfc_sli4_fcf_rr_read_fcf_rec(phba,
842 lpfc_printf_log(phba, KERN_WARNING,
845 "robin FCF failover "
849 phba->fcf.current_rec.fcf_indx);
856 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
857 "2858 FLOGI failure Status:x%x/x%x TMO:x%x\n",
858 irsp->ulpStatus, irsp->un.ulpWord[4],
861 /* Check for retry */
862 if (lpfc_els_retry(phba, cmdiocb, rspiocb))
865 /* FLOGI failed, so there is no fabric */
866 spin_lock_irq(shost->host_lock);
867 vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
868 spin_unlock_irq(shost->host_lock);
870 /* If private loop, then allow max outstanding els to be
871 * LPFC_MAX_DISC_THREADS (32). Scanning in the case of no
872 * alpa map would take too long otherwise.
874 if (phba->alpa_map[0] == 0) {
875 vport->cfg_discovery_threads = LPFC_MAX_DISC_THREADS;
879 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
880 "0100 FLOGI failure Status:x%x/x%x TMO:x%x\n",
881 irsp->ulpStatus, irsp->un.ulpWord[4],
885 spin_lock_irq(shost->host_lock);
886 vport->fc_flag &= ~FC_VPORT_CVL_RCVD;
887 vport->fc_flag &= ~FC_VPORT_LOGO_RCVD;
888 spin_unlock_irq(shost->host_lock);
891 * The FLogI succeeded. Sync the data for the CPU before
894 prsp = list_get_first(&pcmd->list, struct lpfc_dmabuf, list);
896 sp = prsp->virt + sizeof(uint32_t);
898 /* FLOGI completes successfully */
899 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
900 "0101 FLOGI completes successfully "
901 "Data: x%x x%x x%x x%x\n",
902 irsp->un.ulpWord[4], sp->cmn.e_d_tov,
903 sp->cmn.w2.r_a_tov, sp->cmn.edtovResolution);
905 if (vport->port_state == LPFC_FLOGI) {
907 * If Common Service Parameters indicate Nport
908 * we are point to point, if Fport we are Fabric.
911 rc = lpfc_cmpl_els_flogi_fabric(vport, ndlp, sp, irsp);
912 else if (!(phba->hba_flag & HBA_FCOE_SUPPORT))
913 rc = lpfc_cmpl_els_flogi_nport(vport, ndlp, sp);
915 lpfc_printf_vlog(vport, KERN_ERR,
917 "2831 FLOGI response with cleared Fabric "
918 "bit fcf_index 0x%x "
919 "Switch Name %02x%02x%02x%02x%02x%02x%02x%02x "
921 "%02x%02x%02x%02x%02x%02x%02x%02x\n",
922 phba->fcf.current_rec.fcf_indx,
923 phba->fcf.current_rec.switch_name[0],
924 phba->fcf.current_rec.switch_name[1],
925 phba->fcf.current_rec.switch_name[2],
926 phba->fcf.current_rec.switch_name[3],
927 phba->fcf.current_rec.switch_name[4],
928 phba->fcf.current_rec.switch_name[5],
929 phba->fcf.current_rec.switch_name[6],
930 phba->fcf.current_rec.switch_name[7],
931 phba->fcf.current_rec.fabric_name[0],
932 phba->fcf.current_rec.fabric_name[1],
933 phba->fcf.current_rec.fabric_name[2],
934 phba->fcf.current_rec.fabric_name[3],
935 phba->fcf.current_rec.fabric_name[4],
936 phba->fcf.current_rec.fabric_name[5],
937 phba->fcf.current_rec.fabric_name[6],
938 phba->fcf.current_rec.fabric_name[7]);
940 spin_lock_irq(&phba->hbalock);
941 phba->fcf.fcf_flag &= ~FCF_DISCOVERY;
942 spin_unlock_irq(&phba->hbalock);
946 /* Mark the FCF discovery process done */
947 if (phba->hba_flag & HBA_FIP_SUPPORT)
948 lpfc_printf_vlog(vport, KERN_INFO, LOG_FIP |
950 "2769 FLOGI successful on FCF "
951 "record: current_fcf_index:"
952 "x%x, terminate FCF round "
953 "robin failover process\n",
954 phba->fcf.current_rec.fcf_indx);
955 spin_lock_irq(&phba->hbalock);
956 phba->fcf.fcf_flag &= ~FCF_DISCOVERY;
957 spin_unlock_irq(&phba->hbalock);
965 if (!lpfc_error_lost_link(irsp)) {
966 /* FLOGI failed, so just use loop map to make discovery list */
967 lpfc_disc_list_loopmap(vport);
969 /* Start discovery */
970 lpfc_disc_start(vport);
971 } else if (((irsp->ulpStatus != IOSTAT_LOCAL_REJECT) ||
972 ((irsp->un.ulpWord[4] != IOERR_SLI_ABORTED) &&
973 (irsp->un.ulpWord[4] != IOERR_SLI_DOWN))) &&
974 (phba->link_state != LPFC_CLEAR_LA)) {
975 /* If FLOGI failed enable link interrupt. */
976 lpfc_issue_clear_la(phba, vport);
979 lpfc_els_free_iocb(phba, cmdiocb);
983 * lpfc_issue_els_flogi - Issue an flogi iocb command for a vport
984 * @vport: pointer to a host virtual N_Port data structure.
985 * @ndlp: pointer to a node-list data structure.
986 * @retry: number of retries to the command IOCB.
988 * This routine issues a Fabric Login (FLOGI) Request ELS command
989 * for a @vport. The initiator service parameters are put into the payload
990 * of the FLOGI Request IOCB and the top-level callback function pointer
991 * to lpfc_cmpl_els_flogi() routine is put to the IOCB completion callback
992 * function field. The lpfc_issue_fabric_iocb routine is invoked to send
993 * out FLOGI ELS command with one outstanding fabric IOCB at a time.
995 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
996 * will be incremented by 1 for holding the ndlp and the reference to ndlp
997 * will be stored into the context1 field of the IOCB for the completion
998 * callback function to the FLOGI ELS command.
1001 * 0 - successfully issued flogi iocb for @vport
1002 * 1 - failed to issue flogi iocb for @vport
1005 lpfc_issue_els_flogi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1008 struct lpfc_hba *phba = vport->phba;
1009 struct serv_parm *sp;
1011 struct lpfc_iocbq *elsiocb;
1012 struct lpfc_sli_ring *pring;
1018 pring = &phba->sli.ring[LPFC_ELS_RING];
1020 cmdsize = (sizeof(uint32_t) + sizeof(struct serv_parm));
1021 elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp,
1022 ndlp->nlp_DID, ELS_CMD_FLOGI);
1027 icmd = &elsiocb->iocb;
1028 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
1030 /* For FLOGI request, remainder of payload is service parameters */
1031 *((uint32_t *) (pcmd)) = ELS_CMD_FLOGI;
1032 pcmd += sizeof(uint32_t);
1033 memcpy(pcmd, &vport->fc_sparam, sizeof(struct serv_parm));
1034 sp = (struct serv_parm *) pcmd;
1036 /* Setup CSPs accordingly for Fabric */
1037 sp->cmn.e_d_tov = 0;
1038 sp->cmn.w2.r_a_tov = 0;
1039 sp->cls1.classValid = 0;
1040 sp->cls2.seqDelivery = 1;
1041 sp->cls3.seqDelivery = 1;
1042 if (sp->cmn.fcphLow < FC_PH3)
1043 sp->cmn.fcphLow = FC_PH3;
1044 if (sp->cmn.fcphHigh < FC_PH3)
1045 sp->cmn.fcphHigh = FC_PH3;
1047 if (phba->sli_rev == LPFC_SLI_REV4) {
1048 elsiocb->iocb.ulpCt_h = ((SLI4_CT_FCFI >> 1) & 1);
1049 elsiocb->iocb.ulpCt_l = (SLI4_CT_FCFI & 1);
1050 /* FLOGI needs to be 3 for WQE FCFI */
1051 /* Set the fcfi to the fcfi we registered with */
1052 elsiocb->iocb.ulpContext = phba->fcf.fcfi;
1053 } else if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) {
1054 sp->cmn.request_multiple_Nport = 1;
1055 /* For FLOGI, Let FLOGI rsp set the NPortID for VPI 0 */
1060 if (phba->fc_topology != TOPOLOGY_LOOP) {
1061 icmd->un.elsreq64.myID = 0;
1062 icmd->un.elsreq64.fl = 1;
1065 tmo = phba->fc_ratov;
1066 phba->fc_ratov = LPFC_DISC_FLOGI_TMO;
1067 lpfc_set_disctmo(vport);
1068 phba->fc_ratov = tmo;
1070 phba->fc_stat.elsXmitFLOGI++;
1071 elsiocb->iocb_cmpl = lpfc_cmpl_els_flogi;
1073 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
1074 "Issue FLOGI: opt:x%x",
1075 phba->sli3_options, 0, 0);
1077 rc = lpfc_issue_fabric_iocb(phba, elsiocb);
1078 if (rc == IOCB_ERROR) {
1079 lpfc_els_free_iocb(phba, elsiocb);
1086 * lpfc_els_abort_flogi - Abort all outstanding flogi iocbs
1087 * @phba: pointer to lpfc hba data structure.
1089 * This routine aborts all the outstanding Fabric Login (FLOGI) IOCBs
1090 * with a @phba. This routine walks all the outstanding IOCBs on the txcmplq
1091 * list and issues an abort IOCB commond on each outstanding IOCB that
1092 * contains a active Fabric_DID ndlp. Note that this function is to issue
1093 * the abort IOCB command on all the outstanding IOCBs, thus when this
1094 * function returns, it does not guarantee all the IOCBs are actually aborted.
1097 * 0 - Successfully issued abort iocb on all outstanding flogis (Always 0)
1100 lpfc_els_abort_flogi(struct lpfc_hba *phba)
1102 struct lpfc_sli_ring *pring;
1103 struct lpfc_iocbq *iocb, *next_iocb;
1104 struct lpfc_nodelist *ndlp;
1107 /* Abort outstanding I/O on NPort <nlp_DID> */
1108 lpfc_printf_log(phba, KERN_INFO, LOG_DISCOVERY,
1109 "0201 Abort outstanding I/O on NPort x%x\n",
1112 pring = &phba->sli.ring[LPFC_ELS_RING];
1115 * Check the txcmplq for an iocb that matches the nport the driver is
1118 spin_lock_irq(&phba->hbalock);
1119 list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) {
1121 if (icmd->ulpCommand == CMD_ELS_REQUEST64_CR &&
1122 icmd->un.elsreq64.bdl.ulpIoTag32) {
1123 ndlp = (struct lpfc_nodelist *)(iocb->context1);
1124 if (ndlp && NLP_CHK_NODE_ACT(ndlp) &&
1125 (ndlp->nlp_DID == Fabric_DID))
1126 lpfc_sli_issue_abort_iotag(phba, pring, iocb);
1129 spin_unlock_irq(&phba->hbalock);
1135 * lpfc_initial_flogi - Issue an initial fabric login for a vport
1136 * @vport: pointer to a host virtual N_Port data structure.
1138 * This routine issues an initial Fabric Login (FLOGI) for the @vport
1139 * specified. It first searches the ndlp with the Fabric_DID (0xfffffe) from
1140 * the @vport's ndlp list. If no such ndlp found, it will create an ndlp and
1141 * put it into the @vport's ndlp list. If an inactive ndlp found on the list,
1142 * it will just be enabled and made active. The lpfc_issue_els_flogi() routine
1143 * is then invoked with the @vport and the ndlp to perform the FLOGI for the
1147 * 0 - failed to issue initial flogi for @vport
1148 * 1 - successfully issued initial flogi for @vport
1151 lpfc_initial_flogi(struct lpfc_vport *vport)
1153 struct lpfc_hba *phba = vport->phba;
1154 struct lpfc_nodelist *ndlp;
1156 vport->port_state = LPFC_FLOGI;
1157 lpfc_set_disctmo(vport);
1159 /* First look for the Fabric ndlp */
1160 ndlp = lpfc_findnode_did(vport, Fabric_DID);
1162 /* Cannot find existing Fabric ndlp, so allocate a new one */
1163 ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL);
1166 lpfc_nlp_init(vport, ndlp, Fabric_DID);
1167 /* Set the node type */
1168 ndlp->nlp_type |= NLP_FABRIC;
1169 /* Put ndlp onto node list */
1170 lpfc_enqueue_node(vport, ndlp);
1171 } else if (!NLP_CHK_NODE_ACT(ndlp)) {
1172 /* re-setup ndlp without removing from node list */
1173 ndlp = lpfc_enable_node(vport, ndlp, NLP_STE_UNUSED_NODE);
1178 if (lpfc_issue_els_flogi(vport, ndlp, 0))
1179 /* This decrement of reference count to node shall kick off
1180 * the release of the node.
1188 * lpfc_initial_fdisc - Issue an initial fabric discovery for a vport
1189 * @vport: pointer to a host virtual N_Port data structure.
1191 * This routine issues an initial Fabric Discover (FDISC) for the @vport
1192 * specified. It first searches the ndlp with the Fabric_DID (0xfffffe) from
1193 * the @vport's ndlp list. If no such ndlp found, it will create an ndlp and
1194 * put it into the @vport's ndlp list. If an inactive ndlp found on the list,
1195 * it will just be enabled and made active. The lpfc_issue_els_fdisc() routine
1196 * is then invoked with the @vport and the ndlp to perform the FDISC for the
1200 * 0 - failed to issue initial fdisc for @vport
1201 * 1 - successfully issued initial fdisc for @vport
1204 lpfc_initial_fdisc(struct lpfc_vport *vport)
1206 struct lpfc_hba *phba = vport->phba;
1207 struct lpfc_nodelist *ndlp;
1209 /* First look for the Fabric ndlp */
1210 ndlp = lpfc_findnode_did(vport, Fabric_DID);
1212 /* Cannot find existing Fabric ndlp, so allocate a new one */
1213 ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL);
1216 lpfc_nlp_init(vport, ndlp, Fabric_DID);
1217 /* Put ndlp onto node list */
1218 lpfc_enqueue_node(vport, ndlp);
1219 } else if (!NLP_CHK_NODE_ACT(ndlp)) {
1220 /* re-setup ndlp without removing from node list */
1221 ndlp = lpfc_enable_node(vport, ndlp, NLP_STE_UNUSED_NODE);
1226 if (lpfc_issue_els_fdisc(vport, ndlp, 0)) {
1227 /* decrement node reference count to trigger the release of
1237 * lpfc_more_plogi - Check and issue remaining plogis for a vport
1238 * @vport: pointer to a host virtual N_Port data structure.
1240 * This routine checks whether there are more remaining Port Logins
1241 * (PLOGI) to be issued for the @vport. If so, it will invoke the routine
1242 * lpfc_els_disc_plogi() to go through the Node Port Recovery (NPR) nodes
1243 * to issue ELS PLOGIs up to the configured discover threads with the
1244 * @vport (@vport->cfg_discovery_threads). The function also decrement
1245 * the @vport's num_disc_node by 1 if it is not already 0.
1248 lpfc_more_plogi(struct lpfc_vport *vport)
1252 if (vport->num_disc_nodes)
1253 vport->num_disc_nodes--;
1255 /* Continue discovery with <num_disc_nodes> PLOGIs to go */
1256 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
1257 "0232 Continue discovery with %d PLOGIs to go "
1258 "Data: x%x x%x x%x\n",
1259 vport->num_disc_nodes, vport->fc_plogi_cnt,
1260 vport->fc_flag, vport->port_state);
1261 /* Check to see if there are more PLOGIs to be sent */
1262 if (vport->fc_flag & FC_NLP_MORE)
1263 /* go thru NPR nodes and issue any remaining ELS PLOGIs */
1264 sentplogi = lpfc_els_disc_plogi(vport);
1270 * lpfc_plogi_confirm_nport - Confirm pologi wwpn matches stored ndlp
1271 * @phba: pointer to lpfc hba data structure.
1272 * @prsp: pointer to response IOCB payload.
1273 * @ndlp: pointer to a node-list data structure.
1275 * This routine checks and indicates whether the WWPN of an N_Port, retrieved
1276 * from a PLOGI, matches the WWPN that is stored in the @ndlp for that N_POrt.
1277 * The following cases are considered N_Port confirmed:
1278 * 1) The N_Port is a Fabric ndlp; 2) The @ndlp is on vport list and matches
1279 * the WWPN of the N_Port logged into; 3) The @ndlp is not on vport list but
1280 * it does not have WWPN assigned either. If the WWPN is confirmed, the
1281 * pointer to the @ndlp will be returned. If the WWPN is not confirmed:
1282 * 1) if there is a node on vport list other than the @ndlp with the same
1283 * WWPN of the N_Port PLOGI logged into, the lpfc_unreg_rpi() will be invoked
1284 * on that node to release the RPI associated with the node; 2) if there is
1285 * no node found on vport list with the same WWPN of the N_Port PLOGI logged
1286 * into, a new node shall be allocated (or activated). In either case, the
1287 * parameters of the @ndlp shall be copied to the new_ndlp, the @ndlp shall
1288 * be released and the new_ndlp shall be put on to the vport node list and
1289 * its pointer returned as the confirmed node.
1291 * Note that before the @ndlp got "released", the keepDID from not-matching
1292 * or inactive "new_ndlp" on the vport node list is assigned to the nlp_DID
1293 * of the @ndlp. This is because the release of @ndlp is actually to put it
1294 * into an inactive state on the vport node list and the vport node list
1295 * management algorithm does not allow two node with a same DID.
1298 * pointer to the PLOGI N_Port @ndlp
1300 static struct lpfc_nodelist *
1301 lpfc_plogi_confirm_nport(struct lpfc_hba *phba, uint32_t *prsp,
1302 struct lpfc_nodelist *ndlp)
1304 struct lpfc_vport *vport = ndlp->vport;
1305 struct lpfc_nodelist *new_ndlp;
1306 struct lpfc_rport_data *rdata;
1307 struct fc_rport *rport;
1308 struct serv_parm *sp;
1309 uint8_t name[sizeof(struct lpfc_name)];
1310 uint32_t rc, keepDID = 0;
1314 /* Fabric nodes can have the same WWPN so we don't bother searching
1315 * by WWPN. Just return the ndlp that was given to us.
1317 if (ndlp->nlp_type & NLP_FABRIC)
1320 sp = (struct serv_parm *) ((uint8_t *) prsp + sizeof(uint32_t));
1321 memset(name, 0, sizeof(struct lpfc_name));
1323 /* Now we find out if the NPort we are logging into, matches the WWPN
1324 * we have for that ndlp. If not, we have some work to do.
1326 new_ndlp = lpfc_findnode_wwpn(vport, &sp->portName);
1328 if (new_ndlp == ndlp && NLP_CHK_NODE_ACT(new_ndlp))
1332 rc = memcmp(&ndlp->nlp_portname, name,
1333 sizeof(struct lpfc_name));
1336 new_ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_ATOMIC);
1339 lpfc_nlp_init(vport, new_ndlp, ndlp->nlp_DID);
1340 } else if (!NLP_CHK_NODE_ACT(new_ndlp)) {
1341 rc = memcmp(&ndlp->nlp_portname, name,
1342 sizeof(struct lpfc_name));
1345 new_ndlp = lpfc_enable_node(vport, new_ndlp,
1346 NLP_STE_UNUSED_NODE);
1349 keepDID = new_ndlp->nlp_DID;
1351 keepDID = new_ndlp->nlp_DID;
1353 lpfc_unreg_rpi(vport, new_ndlp);
1354 new_ndlp->nlp_DID = ndlp->nlp_DID;
1355 new_ndlp->nlp_prev_state = ndlp->nlp_prev_state;
1357 if (ndlp->nlp_flag & NLP_NPR_2B_DISC)
1358 new_ndlp->nlp_flag |= NLP_NPR_2B_DISC;
1359 ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
1361 /* Set state will put new_ndlp on to node list if not already done */
1362 lpfc_nlp_set_state(vport, new_ndlp, ndlp->nlp_state);
1364 /* Move this back to NPR state */
1365 if (memcmp(&ndlp->nlp_portname, name, sizeof(struct lpfc_name)) == 0) {
1366 /* The new_ndlp is replacing ndlp totally, so we need
1367 * to put ndlp on UNUSED list and try to free it.
1370 /* Fix up the rport accordingly */
1371 rport = ndlp->rport;
1373 rdata = rport->dd_data;
1374 if (rdata->pnode == ndlp) {
1377 rdata->pnode = lpfc_nlp_get(new_ndlp);
1378 new_ndlp->rport = rport;
1380 new_ndlp->nlp_type = ndlp->nlp_type;
1382 /* We shall actually free the ndlp with both nlp_DID and
1383 * nlp_portname fields equals 0 to avoid any ndlp on the
1384 * nodelist never to be used.
1386 if (ndlp->nlp_DID == 0) {
1387 spin_lock_irq(&phba->ndlp_lock);
1388 NLP_SET_FREE_REQ(ndlp);
1389 spin_unlock_irq(&phba->ndlp_lock);
1392 /* Two ndlps cannot have the same did on the nodelist */
1393 ndlp->nlp_DID = keepDID;
1394 lpfc_drop_node(vport, ndlp);
1397 lpfc_unreg_rpi(vport, ndlp);
1398 /* Two ndlps cannot have the same did */
1399 ndlp->nlp_DID = keepDID;
1400 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1401 /* Since we are swapping the ndlp passed in with the new one
1402 * and the did has already been swapped, copy over the
1405 memcpy(&new_ndlp->nlp_portname, &ndlp->nlp_portname,
1406 sizeof(struct lpfc_name));
1407 memcpy(&new_ndlp->nlp_nodename, &ndlp->nlp_nodename,
1408 sizeof(struct lpfc_name));
1409 new_ndlp->nlp_state = ndlp->nlp_state;
1410 /* Fix up the rport accordingly */
1411 rport = ndlp->rport;
1413 rdata = rport->dd_data;
1414 put_node = rdata->pnode != NULL;
1415 put_rport = ndlp->rport != NULL;
1416 rdata->pnode = NULL;
1421 put_device(&rport->dev);
1428 * lpfc_end_rscn - Check and handle more rscn for a vport
1429 * @vport: pointer to a host virtual N_Port data structure.
1431 * This routine checks whether more Registration State Change
1432 * Notifications (RSCNs) came in while the discovery state machine was in
1433 * the FC_RSCN_MODE. If so, the lpfc_els_handle_rscn() routine will be
1434 * invoked to handle the additional RSCNs for the @vport. Otherwise, the
1435 * FC_RSCN_MODE bit will be cleared with the @vport to mark as the end of
1436 * handling the RSCNs.
1439 lpfc_end_rscn(struct lpfc_vport *vport)
1441 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1443 if (vport->fc_flag & FC_RSCN_MODE) {
1445 * Check to see if more RSCNs came in while we were
1446 * processing this one.
1448 if (vport->fc_rscn_id_cnt ||
1449 (vport->fc_flag & FC_RSCN_DISCOVERY) != 0)
1450 lpfc_els_handle_rscn(vport);
1452 spin_lock_irq(shost->host_lock);
1453 vport->fc_flag &= ~FC_RSCN_MODE;
1454 spin_unlock_irq(shost->host_lock);
1460 * lpfc_cmpl_els_plogi - Completion callback function for plogi
1461 * @phba: pointer to lpfc hba data structure.
1462 * @cmdiocb: pointer to lpfc command iocb data structure.
1463 * @rspiocb: pointer to lpfc response iocb data structure.
1465 * This routine is the completion callback function for issuing the Port
1466 * Login (PLOGI) command. For PLOGI completion, there must be an active
1467 * ndlp on the vport node list that matches the remote node ID from the
1468 * PLOGI reponse IOCB. If such ndlp does not exist, the PLOGI is simply
1469 * ignored and command IOCB released. The PLOGI response IOCB status is
1470 * checked for error conditons. If there is error status reported, PLOGI
1471 * retry shall be attempted by invoking the lpfc_els_retry() routine.
1472 * Otherwise, the lpfc_plogi_confirm_nport() routine shall be invoked on
1473 * the ndlp and the NLP_EVT_CMPL_PLOGI state to the Discover State Machine
1474 * (DSM) is set for this PLOGI completion. Finally, it checks whether
1475 * there are additional N_Port nodes with the vport that need to perform
1476 * PLOGI. If so, the lpfc_more_plogi() routine is invoked to issue addition
1480 lpfc_cmpl_els_plogi(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
1481 struct lpfc_iocbq *rspiocb)
1483 struct lpfc_vport *vport = cmdiocb->vport;
1484 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1486 struct lpfc_nodelist *ndlp;
1487 struct lpfc_dmabuf *prsp;
1488 int disc, rc, did, type;
1490 /* we pass cmdiocb to state machine which needs rspiocb as well */
1491 cmdiocb->context_un.rsp_iocb = rspiocb;
1493 irsp = &rspiocb->iocb;
1494 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
1495 "PLOGI cmpl: status:x%x/x%x did:x%x",
1496 irsp->ulpStatus, irsp->un.ulpWord[4],
1497 irsp->un.elsreq64.remoteID);
1499 ndlp = lpfc_findnode_did(vport, irsp->un.elsreq64.remoteID);
1500 if (!ndlp || !NLP_CHK_NODE_ACT(ndlp)) {
1501 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1502 "0136 PLOGI completes to NPort x%x "
1503 "with no ndlp. Data: x%x x%x x%x\n",
1504 irsp->un.elsreq64.remoteID,
1505 irsp->ulpStatus, irsp->un.ulpWord[4],
1510 /* Since ndlp can be freed in the disc state machine, note if this node
1511 * is being used during discovery.
1513 spin_lock_irq(shost->host_lock);
1514 disc = (ndlp->nlp_flag & NLP_NPR_2B_DISC);
1515 ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
1516 spin_unlock_irq(shost->host_lock);
1519 /* PLOGI completes to NPort <nlp_DID> */
1520 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
1521 "0102 PLOGI completes to NPort x%x "
1522 "Data: x%x x%x x%x x%x x%x\n",
1523 ndlp->nlp_DID, irsp->ulpStatus, irsp->un.ulpWord[4],
1524 irsp->ulpTimeout, disc, vport->num_disc_nodes);
1525 /* Check to see if link went down during discovery */
1526 if (lpfc_els_chk_latt(vport)) {
1527 spin_lock_irq(shost->host_lock);
1528 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
1529 spin_unlock_irq(shost->host_lock);
1533 /* ndlp could be freed in DSM, save these values now */
1534 type = ndlp->nlp_type;
1535 did = ndlp->nlp_DID;
1537 if (irsp->ulpStatus) {
1538 /* Check for retry */
1539 if (lpfc_els_retry(phba, cmdiocb, rspiocb)) {
1540 /* ELS command is being retried */
1542 spin_lock_irq(shost->host_lock);
1543 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
1544 spin_unlock_irq(shost->host_lock);
1548 /* PLOGI failed Don't print the vport to vport rjts */
1549 if (irsp->ulpStatus != IOSTAT_LS_RJT ||
1550 (((irsp->un.ulpWord[4]) >> 16 != LSRJT_INVALID_CMD) &&
1551 ((irsp->un.ulpWord[4]) >> 16 != LSRJT_UNABLE_TPC)) ||
1552 (phba)->pport->cfg_log_verbose & LOG_ELS)
1553 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1554 "2753 PLOGI failure DID:%06X Status:x%x/x%x\n",
1555 ndlp->nlp_DID, irsp->ulpStatus,
1556 irsp->un.ulpWord[4]);
1557 /* Do not call DSM for lpfc_els_abort'ed ELS cmds */
1558 if (lpfc_error_lost_link(irsp))
1559 rc = NLP_STE_FREED_NODE;
1561 rc = lpfc_disc_state_machine(vport, ndlp, cmdiocb,
1562 NLP_EVT_CMPL_PLOGI);
1564 /* Good status, call state machine */
1565 prsp = list_entry(((struct lpfc_dmabuf *)
1566 cmdiocb->context2)->list.next,
1567 struct lpfc_dmabuf, list);
1568 ndlp = lpfc_plogi_confirm_nport(phba, prsp->virt, ndlp);
1569 rc = lpfc_disc_state_machine(vport, ndlp, cmdiocb,
1570 NLP_EVT_CMPL_PLOGI);
1573 if (disc && vport->num_disc_nodes) {
1574 /* Check to see if there are more PLOGIs to be sent */
1575 lpfc_more_plogi(vport);
1577 if (vport->num_disc_nodes == 0) {
1578 spin_lock_irq(shost->host_lock);
1579 vport->fc_flag &= ~FC_NDISC_ACTIVE;
1580 spin_unlock_irq(shost->host_lock);
1582 lpfc_can_disctmo(vport);
1583 lpfc_end_rscn(vport);
1588 lpfc_els_free_iocb(phba, cmdiocb);
1593 * lpfc_issue_els_plogi - Issue an plogi iocb command for a vport
1594 * @vport: pointer to a host virtual N_Port data structure.
1595 * @did: destination port identifier.
1596 * @retry: number of retries to the command IOCB.
1598 * This routine issues a Port Login (PLOGI) command to a remote N_Port
1599 * (with the @did) for a @vport. Before issuing a PLOGI to a remote N_Port,
1600 * the ndlp with the remote N_Port DID must exist on the @vport's ndlp list.
1601 * This routine constructs the proper feilds of the PLOGI IOCB and invokes
1602 * the lpfc_sli_issue_iocb() routine to send out PLOGI ELS command.
1604 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
1605 * will be incremented by 1 for holding the ndlp and the reference to ndlp
1606 * will be stored into the context1 field of the IOCB for the completion
1607 * callback function to the PLOGI ELS command.
1610 * 0 - Successfully issued a plogi for @vport
1611 * 1 - failed to issue a plogi for @vport
1614 lpfc_issue_els_plogi(struct lpfc_vport *vport, uint32_t did, uint8_t retry)
1616 struct lpfc_hba *phba = vport->phba;
1617 struct serv_parm *sp;
1619 struct lpfc_nodelist *ndlp;
1620 struct lpfc_iocbq *elsiocb;
1621 struct lpfc_sli *psli;
1628 ndlp = lpfc_findnode_did(vport, did);
1629 if (ndlp && !NLP_CHK_NODE_ACT(ndlp))
1632 /* If ndlp is not NULL, we will bump the reference count on it */
1633 cmdsize = (sizeof(uint32_t) + sizeof(struct serv_parm));
1634 elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp, did,
1639 icmd = &elsiocb->iocb;
1640 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
1642 /* For PLOGI request, remainder of payload is service parameters */
1643 *((uint32_t *) (pcmd)) = ELS_CMD_PLOGI;
1644 pcmd += sizeof(uint32_t);
1645 memcpy(pcmd, &vport->fc_sparam, sizeof(struct serv_parm));
1646 sp = (struct serv_parm *) pcmd;
1648 if (sp->cmn.fcphLow < FC_PH_4_3)
1649 sp->cmn.fcphLow = FC_PH_4_3;
1651 if (sp->cmn.fcphHigh < FC_PH3)
1652 sp->cmn.fcphHigh = FC_PH3;
1654 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
1655 "Issue PLOGI: did:x%x",
1658 phba->fc_stat.elsXmitPLOGI++;
1659 elsiocb->iocb_cmpl = lpfc_cmpl_els_plogi;
1660 ret = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
1662 if (ret == IOCB_ERROR) {
1663 lpfc_els_free_iocb(phba, elsiocb);
1670 * lpfc_cmpl_els_prli - Completion callback function for prli
1671 * @phba: pointer to lpfc hba data structure.
1672 * @cmdiocb: pointer to lpfc command iocb data structure.
1673 * @rspiocb: pointer to lpfc response iocb data structure.
1675 * This routine is the completion callback function for a Process Login
1676 * (PRLI) ELS command. The PRLI response IOCB status is checked for error
1677 * status. If there is error status reported, PRLI retry shall be attempted
1678 * by invoking the lpfc_els_retry() routine. Otherwise, the state
1679 * NLP_EVT_CMPL_PRLI is sent to the Discover State Machine (DSM) for this
1680 * ndlp to mark the PRLI completion.
1683 lpfc_cmpl_els_prli(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
1684 struct lpfc_iocbq *rspiocb)
1686 struct lpfc_vport *vport = cmdiocb->vport;
1687 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1689 struct lpfc_sli *psli;
1690 struct lpfc_nodelist *ndlp;
1693 /* we pass cmdiocb to state machine which needs rspiocb as well */
1694 cmdiocb->context_un.rsp_iocb = rspiocb;
1696 irsp = &(rspiocb->iocb);
1697 ndlp = (struct lpfc_nodelist *) cmdiocb->context1;
1698 spin_lock_irq(shost->host_lock);
1699 ndlp->nlp_flag &= ~NLP_PRLI_SND;
1700 spin_unlock_irq(shost->host_lock);
1702 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
1703 "PRLI cmpl: status:x%x/x%x did:x%x",
1704 irsp->ulpStatus, irsp->un.ulpWord[4],
1706 /* PRLI completes to NPort <nlp_DID> */
1707 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
1708 "0103 PRLI completes to NPort x%x "
1709 "Data: x%x x%x x%x x%x\n",
1710 ndlp->nlp_DID, irsp->ulpStatus, irsp->un.ulpWord[4],
1711 irsp->ulpTimeout, vport->num_disc_nodes);
1713 vport->fc_prli_sent--;
1714 /* Check to see if link went down during discovery */
1715 if (lpfc_els_chk_latt(vport))
1718 if (irsp->ulpStatus) {
1719 /* Check for retry */
1720 if (lpfc_els_retry(phba, cmdiocb, rspiocb)) {
1721 /* ELS command is being retried */
1725 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1726 "2754 PRLI failure DID:%06X Status:x%x/x%x\n",
1727 ndlp->nlp_DID, irsp->ulpStatus,
1728 irsp->un.ulpWord[4]);
1729 /* Do not call DSM for lpfc_els_abort'ed ELS cmds */
1730 if (lpfc_error_lost_link(irsp))
1733 lpfc_disc_state_machine(vport, ndlp, cmdiocb,
1736 /* Good status, call state machine */
1737 lpfc_disc_state_machine(vport, ndlp, cmdiocb,
1740 lpfc_els_free_iocb(phba, cmdiocb);
1745 * lpfc_issue_els_prli - Issue a prli iocb command for a vport
1746 * @vport: pointer to a host virtual N_Port data structure.
1747 * @ndlp: pointer to a node-list data structure.
1748 * @retry: number of retries to the command IOCB.
1750 * This routine issues a Process Login (PRLI) ELS command for the
1751 * @vport. The PRLI service parameters are set up in the payload of the
1752 * PRLI Request command and the pointer to lpfc_cmpl_els_prli() routine
1753 * is put to the IOCB completion callback func field before invoking the
1754 * routine lpfc_sli_issue_iocb() to send out PRLI command.
1756 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
1757 * will be incremented by 1 for holding the ndlp and the reference to ndlp
1758 * will be stored into the context1 field of the IOCB for the completion
1759 * callback function to the PRLI ELS command.
1762 * 0 - successfully issued prli iocb command for @vport
1763 * 1 - failed to issue prli iocb command for @vport
1766 lpfc_issue_els_prli(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1769 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1770 struct lpfc_hba *phba = vport->phba;
1773 struct lpfc_iocbq *elsiocb;
1777 cmdsize = (sizeof(uint32_t) + sizeof(PRLI));
1778 elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp,
1779 ndlp->nlp_DID, ELS_CMD_PRLI);
1783 icmd = &elsiocb->iocb;
1784 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
1786 /* For PRLI request, remainder of payload is service parameters */
1787 memset(pcmd, 0, (sizeof(PRLI) + sizeof(uint32_t)));
1788 *((uint32_t *) (pcmd)) = ELS_CMD_PRLI;
1789 pcmd += sizeof(uint32_t);
1791 /* For PRLI, remainder of payload is PRLI parameter page */
1792 npr = (PRLI *) pcmd;
1794 * If our firmware version is 3.20 or later,
1795 * set the following bits for FC-TAPE support.
1797 if (phba->vpd.rev.feaLevelHigh >= 0x02) {
1798 npr->ConfmComplAllowed = 1;
1800 npr->TaskRetryIdReq = 1;
1802 npr->estabImagePair = 1;
1803 npr->readXferRdyDis = 1;
1805 /* For FCP support */
1806 npr->prliType = PRLI_FCP_TYPE;
1807 npr->initiatorFunc = 1;
1809 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
1810 "Issue PRLI: did:x%x",
1811 ndlp->nlp_DID, 0, 0);
1813 phba->fc_stat.elsXmitPRLI++;
1814 elsiocb->iocb_cmpl = lpfc_cmpl_els_prli;
1815 spin_lock_irq(shost->host_lock);
1816 ndlp->nlp_flag |= NLP_PRLI_SND;
1817 spin_unlock_irq(shost->host_lock);
1818 if (lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0) ==
1820 spin_lock_irq(shost->host_lock);
1821 ndlp->nlp_flag &= ~NLP_PRLI_SND;
1822 spin_unlock_irq(shost->host_lock);
1823 lpfc_els_free_iocb(phba, elsiocb);
1826 vport->fc_prli_sent++;
1831 * lpfc_rscn_disc - Perform rscn discovery for a vport
1832 * @vport: pointer to a host virtual N_Port data structure.
1834 * This routine performs Registration State Change Notification (RSCN)
1835 * discovery for a @vport. If the @vport's node port recovery count is not
1836 * zero, it will invoke the lpfc_els_disc_plogi() to perform PLOGI for all
1837 * the nodes that need recovery. If none of the PLOGI were needed through
1838 * the lpfc_els_disc_plogi() routine, the lpfc_end_rscn() routine shall be
1839 * invoked to check and handle possible more RSCN came in during the period
1840 * of processing the current ones.
1843 lpfc_rscn_disc(struct lpfc_vport *vport)
1845 lpfc_can_disctmo(vport);
1847 /* RSCN discovery */
1848 /* go thru NPR nodes and issue ELS PLOGIs */
1849 if (vport->fc_npr_cnt)
1850 if (lpfc_els_disc_plogi(vport))
1853 lpfc_end_rscn(vport);
1857 * lpfc_adisc_done - Complete the adisc phase of discovery
1858 * @vport: pointer to lpfc_vport hba data structure that finished all ADISCs.
1860 * This function is called when the final ADISC is completed during discovery.
1861 * This function handles clearing link attention or issuing reg_vpi depending
1862 * on whether npiv is enabled. This function also kicks off the PLOGI phase of
1864 * This function is called with no locks held.
1867 lpfc_adisc_done(struct lpfc_vport *vport)
1869 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1870 struct lpfc_hba *phba = vport->phba;
1873 * For NPIV, cmpl_reg_vpi will set port_state to READY,
1874 * and continue discovery.
1876 if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
1877 !(vport->fc_flag & FC_RSCN_MODE) &&
1878 (phba->sli_rev < LPFC_SLI_REV4)) {
1879 lpfc_issue_reg_vpi(phba, vport);
1883 * For SLI2, we need to set port_state to READY
1884 * and continue discovery.
1886 if (vport->port_state < LPFC_VPORT_READY) {
1887 /* If we get here, there is nothing to ADISC */
1888 if (vport->port_type == LPFC_PHYSICAL_PORT)
1889 lpfc_issue_clear_la(phba, vport);
1890 if (!(vport->fc_flag & FC_ABORT_DISCOVERY)) {
1891 vport->num_disc_nodes = 0;
1892 /* go thru NPR list, issue ELS PLOGIs */
1893 if (vport->fc_npr_cnt)
1894 lpfc_els_disc_plogi(vport);
1895 if (!vport->num_disc_nodes) {
1896 spin_lock_irq(shost->host_lock);
1897 vport->fc_flag &= ~FC_NDISC_ACTIVE;
1898 spin_unlock_irq(shost->host_lock);
1899 lpfc_can_disctmo(vport);
1900 lpfc_end_rscn(vport);
1903 vport->port_state = LPFC_VPORT_READY;
1905 lpfc_rscn_disc(vport);
1909 * lpfc_more_adisc - Issue more adisc as needed
1910 * @vport: pointer to a host virtual N_Port data structure.
1912 * This routine determines whether there are more ndlps on a @vport
1913 * node list need to have Address Discover (ADISC) issued. If so, it will
1914 * invoke the lpfc_els_disc_adisc() routine to issue ADISC on the @vport's
1915 * remaining nodes which need to have ADISC sent.
1918 lpfc_more_adisc(struct lpfc_vport *vport)
1922 if (vport->num_disc_nodes)
1923 vport->num_disc_nodes--;
1924 /* Continue discovery with <num_disc_nodes> ADISCs to go */
1925 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
1926 "0210 Continue discovery with %d ADISCs to go "
1927 "Data: x%x x%x x%x\n",
1928 vport->num_disc_nodes, vport->fc_adisc_cnt,
1929 vport->fc_flag, vport->port_state);
1930 /* Check to see if there are more ADISCs to be sent */
1931 if (vport->fc_flag & FC_NLP_MORE) {
1932 lpfc_set_disctmo(vport);
1933 /* go thru NPR nodes and issue any remaining ELS ADISCs */
1934 sentadisc = lpfc_els_disc_adisc(vport);
1936 if (!vport->num_disc_nodes)
1937 lpfc_adisc_done(vport);
1942 * lpfc_cmpl_els_adisc - Completion callback function for adisc
1943 * @phba: pointer to lpfc hba data structure.
1944 * @cmdiocb: pointer to lpfc command iocb data structure.
1945 * @rspiocb: pointer to lpfc response iocb data structure.
1947 * This routine is the completion function for issuing the Address Discover
1948 * (ADISC) command. It first checks to see whether link went down during
1949 * the discovery process. If so, the node will be marked as node port
1950 * recovery for issuing discover IOCB by the link attention handler and
1951 * exit. Otherwise, the response status is checked. If error was reported
1952 * in the response status, the ADISC command shall be retried by invoking
1953 * the lpfc_els_retry() routine. Otherwise, if no error was reported in
1954 * the response status, the state machine is invoked to set transition
1955 * with respect to NLP_EVT_CMPL_ADISC event.
1958 lpfc_cmpl_els_adisc(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
1959 struct lpfc_iocbq *rspiocb)
1961 struct lpfc_vport *vport = cmdiocb->vport;
1962 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1964 struct lpfc_nodelist *ndlp;
1967 /* we pass cmdiocb to state machine which needs rspiocb as well */
1968 cmdiocb->context_un.rsp_iocb = rspiocb;
1970 irsp = &(rspiocb->iocb);
1971 ndlp = (struct lpfc_nodelist *) cmdiocb->context1;
1973 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
1974 "ADISC cmpl: status:x%x/x%x did:x%x",
1975 irsp->ulpStatus, irsp->un.ulpWord[4],
1978 /* Since ndlp can be freed in the disc state machine, note if this node
1979 * is being used during discovery.
1981 spin_lock_irq(shost->host_lock);
1982 disc = (ndlp->nlp_flag & NLP_NPR_2B_DISC);
1983 ndlp->nlp_flag &= ~(NLP_ADISC_SND | NLP_NPR_2B_DISC);
1984 spin_unlock_irq(shost->host_lock);
1985 /* ADISC completes to NPort <nlp_DID> */
1986 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
1987 "0104 ADISC completes to NPort x%x "
1988 "Data: x%x x%x x%x x%x x%x\n",
1989 ndlp->nlp_DID, irsp->ulpStatus, irsp->un.ulpWord[4],
1990 irsp->ulpTimeout, disc, vport->num_disc_nodes);
1991 /* Check to see if link went down during discovery */
1992 if (lpfc_els_chk_latt(vport)) {
1993 spin_lock_irq(shost->host_lock);
1994 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
1995 spin_unlock_irq(shost->host_lock);
1999 if (irsp->ulpStatus) {
2000 /* Check for retry */
2001 if (lpfc_els_retry(phba, cmdiocb, rspiocb)) {
2002 /* ELS command is being retried */
2004 spin_lock_irq(shost->host_lock);
2005 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
2006 spin_unlock_irq(shost->host_lock);
2007 lpfc_set_disctmo(vport);
2012 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
2013 "2755 ADISC failure DID:%06X Status:x%x/x%x\n",
2014 ndlp->nlp_DID, irsp->ulpStatus,
2015 irsp->un.ulpWord[4]);
2016 /* Do not call DSM for lpfc_els_abort'ed ELS cmds */
2017 if (!lpfc_error_lost_link(irsp))
2018 lpfc_disc_state_machine(vport, ndlp, cmdiocb,
2019 NLP_EVT_CMPL_ADISC);
2021 /* Good status, call state machine */
2022 lpfc_disc_state_machine(vport, ndlp, cmdiocb,
2023 NLP_EVT_CMPL_ADISC);
2025 /* Check to see if there are more ADISCs to be sent */
2026 if (disc && vport->num_disc_nodes)
2027 lpfc_more_adisc(vport);
2029 lpfc_els_free_iocb(phba, cmdiocb);
2034 * lpfc_issue_els_adisc - Issue an address discover iocb to an node on a vport
2035 * @vport: pointer to a virtual N_Port data structure.
2036 * @ndlp: pointer to a node-list data structure.
2037 * @retry: number of retries to the command IOCB.
2039 * This routine issues an Address Discover (ADISC) for an @ndlp on a
2040 * @vport. It prepares the payload of the ADISC ELS command, updates the
2041 * and states of the ndlp, and invokes the lpfc_sli_issue_iocb() routine
2042 * to issue the ADISC ELS command.
2044 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
2045 * will be incremented by 1 for holding the ndlp and the reference to ndlp
2046 * will be stored into the context1 field of the IOCB for the completion
2047 * callback function to the ADISC ELS command.
2050 * 0 - successfully issued adisc
2051 * 1 - failed to issue adisc
2054 lpfc_issue_els_adisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2057 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2058 struct lpfc_hba *phba = vport->phba;
2061 struct lpfc_iocbq *elsiocb;
2065 cmdsize = (sizeof(uint32_t) + sizeof(ADISC));
2066 elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp,
2067 ndlp->nlp_DID, ELS_CMD_ADISC);
2071 icmd = &elsiocb->iocb;
2072 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
2074 /* For ADISC request, remainder of payload is service parameters */
2075 *((uint32_t *) (pcmd)) = ELS_CMD_ADISC;
2076 pcmd += sizeof(uint32_t);
2078 /* Fill in ADISC payload */
2079 ap = (ADISC *) pcmd;
2080 ap->hardAL_PA = phba->fc_pref_ALPA;
2081 memcpy(&ap->portName, &vport->fc_portname, sizeof(struct lpfc_name));
2082 memcpy(&ap->nodeName, &vport->fc_nodename, sizeof(struct lpfc_name));
2083 ap->DID = be32_to_cpu(vport->fc_myDID);
2085 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
2086 "Issue ADISC: did:x%x",
2087 ndlp->nlp_DID, 0, 0);
2089 phba->fc_stat.elsXmitADISC++;
2090 elsiocb->iocb_cmpl = lpfc_cmpl_els_adisc;
2091 spin_lock_irq(shost->host_lock);
2092 ndlp->nlp_flag |= NLP_ADISC_SND;
2093 spin_unlock_irq(shost->host_lock);
2094 if (lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0) ==
2096 spin_lock_irq(shost->host_lock);
2097 ndlp->nlp_flag &= ~NLP_ADISC_SND;
2098 spin_unlock_irq(shost->host_lock);
2099 lpfc_els_free_iocb(phba, elsiocb);
2106 * lpfc_cmpl_els_logo - Completion callback function for logo
2107 * @phba: pointer to lpfc hba data structure.
2108 * @cmdiocb: pointer to lpfc command iocb data structure.
2109 * @rspiocb: pointer to lpfc response iocb data structure.
2111 * This routine is the completion function for issuing the ELS Logout (LOGO)
2112 * command. If no error status was reported from the LOGO response, the
2113 * state machine of the associated ndlp shall be invoked for transition with
2114 * respect to NLP_EVT_CMPL_LOGO event. Otherwise, if error status was reported,
2115 * the lpfc_els_retry() routine will be invoked to retry the LOGO command.
2118 lpfc_cmpl_els_logo(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
2119 struct lpfc_iocbq *rspiocb)
2121 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) cmdiocb->context1;
2122 struct lpfc_vport *vport = ndlp->vport;
2123 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2125 struct lpfc_sli *psli;
2128 /* we pass cmdiocb to state machine which needs rspiocb as well */
2129 cmdiocb->context_un.rsp_iocb = rspiocb;
2131 irsp = &(rspiocb->iocb);
2132 spin_lock_irq(shost->host_lock);
2133 ndlp->nlp_flag &= ~NLP_LOGO_SND;
2134 spin_unlock_irq(shost->host_lock);
2136 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
2137 "LOGO cmpl: status:x%x/x%x did:x%x",
2138 irsp->ulpStatus, irsp->un.ulpWord[4],
2140 /* LOGO completes to NPort <nlp_DID> */
2141 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
2142 "0105 LOGO completes to NPort x%x "
2143 "Data: x%x x%x x%x x%x\n",
2144 ndlp->nlp_DID, irsp->ulpStatus, irsp->un.ulpWord[4],
2145 irsp->ulpTimeout, vport->num_disc_nodes);
2146 /* Check to see if link went down during discovery */
2147 if (lpfc_els_chk_latt(vport))
2150 if (ndlp->nlp_flag & NLP_TARGET_REMOVE) {
2151 /* NLP_EVT_DEVICE_RM should unregister the RPI
2152 * which should abort all outstanding IOs.
2154 lpfc_disc_state_machine(vport, ndlp, cmdiocb,
2159 if (irsp->ulpStatus) {
2160 /* Check for retry */
2161 if (lpfc_els_retry(phba, cmdiocb, rspiocb))
2162 /* ELS command is being retried */
2165 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
2166 "2756 LOGO failure DID:%06X Status:x%x/x%x\n",
2167 ndlp->nlp_DID, irsp->ulpStatus,
2168 irsp->un.ulpWord[4]);
2169 /* Do not call DSM for lpfc_els_abort'ed ELS cmds */
2170 if (lpfc_error_lost_link(irsp))
2173 lpfc_disc_state_machine(vport, ndlp, cmdiocb,
2176 /* Good status, call state machine.
2177 * This will unregister the rpi if needed.
2179 lpfc_disc_state_machine(vport, ndlp, cmdiocb,
2182 lpfc_els_free_iocb(phba, cmdiocb);
2187 * lpfc_issue_els_logo - Issue a logo to an node on a vport
2188 * @vport: pointer to a virtual N_Port data structure.
2189 * @ndlp: pointer to a node-list data structure.
2190 * @retry: number of retries to the command IOCB.
2192 * This routine constructs and issues an ELS Logout (LOGO) iocb command
2193 * to a remote node, referred by an @ndlp on a @vport. It constructs the
2194 * payload of the IOCB, properly sets up the @ndlp state, and invokes the
2195 * lpfc_sli_issue_iocb() routine to send out the LOGO ELS command.
2197 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
2198 * will be incremented by 1 for holding the ndlp and the reference to ndlp
2199 * will be stored into the context1 field of the IOCB for the completion
2200 * callback function to the LOGO ELS command.
2203 * 0 - successfully issued logo
2204 * 1 - failed to issue logo
2207 lpfc_issue_els_logo(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2210 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2211 struct lpfc_hba *phba = vport->phba;
2213 struct lpfc_iocbq *elsiocb;
2218 spin_lock_irq(shost->host_lock);
2219 if (ndlp->nlp_flag & NLP_LOGO_SND) {
2220 spin_unlock_irq(shost->host_lock);
2223 spin_unlock_irq(shost->host_lock);
2225 cmdsize = (2 * sizeof(uint32_t)) + sizeof(struct lpfc_name);
2226 elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp,
2227 ndlp->nlp_DID, ELS_CMD_LOGO);
2231 icmd = &elsiocb->iocb;
2232 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
2233 *((uint32_t *) (pcmd)) = ELS_CMD_LOGO;
2234 pcmd += sizeof(uint32_t);
2236 /* Fill in LOGO payload */
2237 *((uint32_t *) (pcmd)) = be32_to_cpu(vport->fc_myDID);
2238 pcmd += sizeof(uint32_t);
2239 memcpy(pcmd, &vport->fc_portname, sizeof(struct lpfc_name));
2241 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
2242 "Issue LOGO: did:x%x",
2243 ndlp->nlp_DID, 0, 0);
2245 phba->fc_stat.elsXmitLOGO++;
2246 elsiocb->iocb_cmpl = lpfc_cmpl_els_logo;
2247 spin_lock_irq(shost->host_lock);
2248 ndlp->nlp_flag |= NLP_LOGO_SND;
2249 spin_unlock_irq(shost->host_lock);
2250 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
2252 if (rc == IOCB_ERROR) {
2253 spin_lock_irq(shost->host_lock);
2254 ndlp->nlp_flag &= ~NLP_LOGO_SND;
2255 spin_unlock_irq(shost->host_lock);
2256 lpfc_els_free_iocb(phba, elsiocb);
2263 * lpfc_cmpl_els_cmd - Completion callback function for generic els command
2264 * @phba: pointer to lpfc hba data structure.
2265 * @cmdiocb: pointer to lpfc command iocb data structure.
2266 * @rspiocb: pointer to lpfc response iocb data structure.
2268 * This routine is a generic completion callback function for ELS commands.
2269 * Specifically, it is the callback function which does not need to perform
2270 * any command specific operations. It is currently used by the ELS command
2271 * issuing routines for the ELS State Change Request (SCR),
2272 * lpfc_issue_els_scr(), and the ELS Fibre Channel Address Resolution
2273 * Protocol Response (FARPR) routine, lpfc_issue_els_farpr(). Other than
2274 * certain debug loggings, this callback function simply invokes the
2275 * lpfc_els_chk_latt() routine to check whether link went down during the
2276 * discovery process.
2279 lpfc_cmpl_els_cmd(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
2280 struct lpfc_iocbq *rspiocb)
2282 struct lpfc_vport *vport = cmdiocb->vport;
2285 irsp = &rspiocb->iocb;
2287 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
2288 "ELS cmd cmpl: status:x%x/x%x did:x%x",
2289 irsp->ulpStatus, irsp->un.ulpWord[4],
2290 irsp->un.elsreq64.remoteID);
2291 /* ELS cmd tag <ulpIoTag> completes */
2292 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
2293 "0106 ELS cmd tag x%x completes Data: x%x x%x x%x\n",
2294 irsp->ulpIoTag, irsp->ulpStatus,
2295 irsp->un.ulpWord[4], irsp->ulpTimeout);
2296 /* Check to see if link went down during discovery */
2297 lpfc_els_chk_latt(vport);
2298 lpfc_els_free_iocb(phba, cmdiocb);
2303 * lpfc_issue_els_scr - Issue a scr to an node on a vport
2304 * @vport: pointer to a host virtual N_Port data structure.
2305 * @nportid: N_Port identifier to the remote node.
2306 * @retry: number of retries to the command IOCB.
2308 * This routine issues a State Change Request (SCR) to a fabric node
2309 * on a @vport. The remote node @nportid is passed into the function. It
2310 * first search the @vport node list to find the matching ndlp. If no such
2311 * ndlp is found, a new ndlp shall be created for this (SCR) purpose. An
2312 * IOCB is allocated, payload prepared, and the lpfc_sli_issue_iocb()
2313 * routine is invoked to send the SCR IOCB.
2315 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
2316 * will be incremented by 1 for holding the ndlp and the reference to ndlp
2317 * will be stored into the context1 field of the IOCB for the completion
2318 * callback function to the SCR ELS command.
2321 * 0 - Successfully issued scr command
2322 * 1 - Failed to issue scr command
2325 lpfc_issue_els_scr(struct lpfc_vport *vport, uint32_t nportid, uint8_t retry)
2327 struct lpfc_hba *phba = vport->phba;
2329 struct lpfc_iocbq *elsiocb;
2330 struct lpfc_sli *psli;
2333 struct lpfc_nodelist *ndlp;
2336 cmdsize = (sizeof(uint32_t) + sizeof(SCR));
2338 ndlp = lpfc_findnode_did(vport, nportid);
2340 ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL);
2343 lpfc_nlp_init(vport, ndlp, nportid);
2344 lpfc_enqueue_node(vport, ndlp);
2345 } else if (!NLP_CHK_NODE_ACT(ndlp)) {
2346 ndlp = lpfc_enable_node(vport, ndlp, NLP_STE_UNUSED_NODE);
2351 elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp,
2352 ndlp->nlp_DID, ELS_CMD_SCR);
2355 /* This will trigger the release of the node just
2362 icmd = &elsiocb->iocb;
2363 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
2365 *((uint32_t *) (pcmd)) = ELS_CMD_SCR;
2366 pcmd += sizeof(uint32_t);
2368 /* For SCR, remainder of payload is SCR parameter page */
2369 memset(pcmd, 0, sizeof(SCR));
2370 ((SCR *) pcmd)->Function = SCR_FUNC_FULL;
2372 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
2373 "Issue SCR: did:x%x",
2374 ndlp->nlp_DID, 0, 0);
2376 phba->fc_stat.elsXmitSCR++;
2377 elsiocb->iocb_cmpl = lpfc_cmpl_els_cmd;
2378 if (lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0) ==
2380 /* The additional lpfc_nlp_put will cause the following
2381 * lpfc_els_free_iocb routine to trigger the rlease of
2385 lpfc_els_free_iocb(phba, elsiocb);
2388 /* This will cause the callback-function lpfc_cmpl_els_cmd to
2389 * trigger the release of node.
2396 * lpfc_issue_els_farpr - Issue a farp to an node on a vport
2397 * @vport: pointer to a host virtual N_Port data structure.
2398 * @nportid: N_Port identifier to the remote node.
2399 * @retry: number of retries to the command IOCB.
2401 * This routine issues a Fibre Channel Address Resolution Response
2402 * (FARPR) to a node on a vport. The remote node N_Port identifier (@nportid)
2403 * is passed into the function. It first search the @vport node list to find
2404 * the matching ndlp. If no such ndlp is found, a new ndlp shall be created
2405 * for this (FARPR) purpose. An IOCB is allocated, payload prepared, and the
2406 * lpfc_sli_issue_iocb() routine is invoked to send the FARPR ELS command.
2408 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
2409 * will be incremented by 1 for holding the ndlp and the reference to ndlp
2410 * will be stored into the context1 field of the IOCB for the completion
2411 * callback function to the PARPR ELS command.
2414 * 0 - Successfully issued farpr command
2415 * 1 - Failed to issue farpr command
2418 lpfc_issue_els_farpr(struct lpfc_vport *vport, uint32_t nportid, uint8_t retry)
2420 struct lpfc_hba *phba = vport->phba;
2422 struct lpfc_iocbq *elsiocb;
2423 struct lpfc_sli *psli;
2428 struct lpfc_nodelist *ondlp;
2429 struct lpfc_nodelist *ndlp;
2432 cmdsize = (sizeof(uint32_t) + sizeof(FARP));
2434 ndlp = lpfc_findnode_did(vport, nportid);
2436 ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL);
2439 lpfc_nlp_init(vport, ndlp, nportid);
2440 lpfc_enqueue_node(vport, ndlp);
2441 } else if (!NLP_CHK_NODE_ACT(ndlp)) {
2442 ndlp = lpfc_enable_node(vport, ndlp, NLP_STE_UNUSED_NODE);
2447 elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp,
2448 ndlp->nlp_DID, ELS_CMD_RNID);
2450 /* This will trigger the release of the node just
2457 icmd = &elsiocb->iocb;
2458 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
2460 *((uint32_t *) (pcmd)) = ELS_CMD_FARPR;
2461 pcmd += sizeof(uint32_t);
2463 /* Fill in FARPR payload */
2464 fp = (FARP *) (pcmd);
2465 memset(fp, 0, sizeof(FARP));
2466 lp = (uint32_t *) pcmd;
2467 *lp++ = be32_to_cpu(nportid);
2468 *lp++ = be32_to_cpu(vport->fc_myDID);
2470 fp->Mflags = (FARP_MATCH_PORT | FARP_MATCH_NODE);
2472 memcpy(&fp->RportName, &vport->fc_portname, sizeof(struct lpfc_name));
2473 memcpy(&fp->RnodeName, &vport->fc_nodename, sizeof(struct lpfc_name));
2474 ondlp = lpfc_findnode_did(vport, nportid);
2475 if (ondlp && NLP_CHK_NODE_ACT(ondlp)) {
2476 memcpy(&fp->OportName, &ondlp->nlp_portname,
2477 sizeof(struct lpfc_name));
2478 memcpy(&fp->OnodeName, &ondlp->nlp_nodename,
2479 sizeof(struct lpfc_name));
2482 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
2483 "Issue FARPR: did:x%x",
2484 ndlp->nlp_DID, 0, 0);
2486 phba->fc_stat.elsXmitFARPR++;
2487 elsiocb->iocb_cmpl = lpfc_cmpl_els_cmd;
2488 if (lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0) ==
2490 /* The additional lpfc_nlp_put will cause the following
2491 * lpfc_els_free_iocb routine to trigger the release of
2495 lpfc_els_free_iocb(phba, elsiocb);
2498 /* This will cause the callback-function lpfc_cmpl_els_cmd to
2499 * trigger the release of the node.
2506 * lpfc_cancel_retry_delay_tmo - Cancel the timer with delayed iocb-cmd retry
2507 * @vport: pointer to a host virtual N_Port data structure.
2508 * @nlp: pointer to a node-list data structure.
2510 * This routine cancels the timer with a delayed IOCB-command retry for
2511 * a @vport's @ndlp. It stops the timer for the delayed function retrial and
2512 * removes the ELS retry event if it presents. In addition, if the
2513 * NLP_NPR_2B_DISC bit is set in the @nlp's nlp_flag bitmap, ADISC IOCB
2514 * commands are sent for the @vport's nodes that require issuing discovery
2518 lpfc_cancel_retry_delay_tmo(struct lpfc_vport *vport, struct lpfc_nodelist *nlp)
2520 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2521 struct lpfc_work_evt *evtp;
2523 if (!(nlp->nlp_flag & NLP_DELAY_TMO))
2525 spin_lock_irq(shost->host_lock);
2526 nlp->nlp_flag &= ~NLP_DELAY_TMO;
2527 spin_unlock_irq(shost->host_lock);
2528 del_timer_sync(&nlp->nlp_delayfunc);
2529 nlp->nlp_last_elscmd = 0;
2530 if (!list_empty(&nlp->els_retry_evt.evt_listp)) {
2531 list_del_init(&nlp->els_retry_evt.evt_listp);
2532 /* Decrement nlp reference count held for the delayed retry */
2533 evtp = &nlp->els_retry_evt;
2534 lpfc_nlp_put((struct lpfc_nodelist *)evtp->evt_arg1);
2536 if (nlp->nlp_flag & NLP_NPR_2B_DISC) {
2537 spin_lock_irq(shost->host_lock);
2538 nlp->nlp_flag &= ~NLP_NPR_2B_DISC;
2539 spin_unlock_irq(shost->host_lock);
2540 if (vport->num_disc_nodes) {
2541 if (vport->port_state < LPFC_VPORT_READY) {
2542 /* Check if there are more ADISCs to be sent */
2543 lpfc_more_adisc(vport);
2545 /* Check if there are more PLOGIs to be sent */
2546 lpfc_more_plogi(vport);
2547 if (vport->num_disc_nodes == 0) {
2548 spin_lock_irq(shost->host_lock);
2549 vport->fc_flag &= ~FC_NDISC_ACTIVE;
2550 spin_unlock_irq(shost->host_lock);
2551 lpfc_can_disctmo(vport);
2552 lpfc_end_rscn(vport);
2561 * lpfc_els_retry_delay - Timer function with a ndlp delayed function timer
2562 * @ptr: holder for the pointer to the timer function associated data (ndlp).
2564 * This routine is invoked by the ndlp delayed-function timer to check
2565 * whether there is any pending ELS retry event(s) with the node. If not, it
2566 * simply returns. Otherwise, if there is at least one ELS delayed event, it
2567 * adds the delayed events to the HBA work list and invokes the
2568 * lpfc_worker_wake_up() routine to wake up worker thread to process the
2569 * event. Note that lpfc_nlp_get() is called before posting the event to
2570 * the work list to hold reference count of ndlp so that it guarantees the
2571 * reference to ndlp will still be available when the worker thread gets
2572 * to the event associated with the ndlp.
2575 lpfc_els_retry_delay(unsigned long ptr)
2577 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) ptr;
2578 struct lpfc_vport *vport = ndlp->vport;
2579 struct lpfc_hba *phba = vport->phba;
2580 unsigned long flags;
2581 struct lpfc_work_evt *evtp = &ndlp->els_retry_evt;
2583 spin_lock_irqsave(&phba->hbalock, flags);
2584 if (!list_empty(&evtp->evt_listp)) {
2585 spin_unlock_irqrestore(&phba->hbalock, flags);
2589 /* We need to hold the node by incrementing the reference
2590 * count until the queued work is done
2592 evtp->evt_arg1 = lpfc_nlp_get(ndlp);
2593 if (evtp->evt_arg1) {
2594 evtp->evt = LPFC_EVT_ELS_RETRY;
2595 list_add_tail(&evtp->evt_listp, &phba->work_list);
2596 lpfc_worker_wake_up(phba);
2598 spin_unlock_irqrestore(&phba->hbalock, flags);
2603 * lpfc_els_retry_delay_handler - Work thread handler for ndlp delayed function
2604 * @ndlp: pointer to a node-list data structure.
2606 * This routine is the worker-thread handler for processing the @ndlp delayed
2607 * event(s), posted by the lpfc_els_retry_delay() routine. It simply retrieves
2608 * the last ELS command from the associated ndlp and invokes the proper ELS
2609 * function according to the delayed ELS command to retry the command.
2612 lpfc_els_retry_delay_handler(struct lpfc_nodelist *ndlp)
2614 struct lpfc_vport *vport = ndlp->vport;
2615 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2616 uint32_t cmd, did, retry;
2618 spin_lock_irq(shost->host_lock);
2619 did = ndlp->nlp_DID;
2620 cmd = ndlp->nlp_last_elscmd;
2621 ndlp->nlp_last_elscmd = 0;
2623 if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
2624 spin_unlock_irq(shost->host_lock);
2628 ndlp->nlp_flag &= ~NLP_DELAY_TMO;
2629 spin_unlock_irq(shost->host_lock);
2631 * If a discovery event readded nlp_delayfunc after timer
2632 * firing and before processing the timer, cancel the
2635 del_timer_sync(&ndlp->nlp_delayfunc);
2636 retry = ndlp->nlp_retry;
2637 ndlp->nlp_retry = 0;
2641 lpfc_issue_els_flogi(vport, ndlp, retry);
2644 if (!lpfc_issue_els_plogi(vport, ndlp->nlp_DID, retry)) {
2645 ndlp->nlp_prev_state = ndlp->nlp_state;
2646 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
2650 if (!lpfc_issue_els_adisc(vport, ndlp, retry)) {
2651 ndlp->nlp_prev_state = ndlp->nlp_state;
2652 lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
2656 if (!lpfc_issue_els_prli(vport, ndlp, retry)) {
2657 ndlp->nlp_prev_state = ndlp->nlp_state;
2658 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PRLI_ISSUE);
2662 if (!lpfc_issue_els_logo(vport, ndlp, retry)) {
2663 ndlp->nlp_prev_state = ndlp->nlp_state;
2664 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2668 lpfc_issue_els_fdisc(vport, ndlp, retry);
2675 * lpfc_els_retry - Make retry decision on an els command iocb
2676 * @phba: pointer to lpfc hba data structure.
2677 * @cmdiocb: pointer to lpfc command iocb data structure.
2678 * @rspiocb: pointer to lpfc response iocb data structure.
2680 * This routine makes a retry decision on an ELS command IOCB, which has
2681 * failed. The following ELS IOCBs use this function for retrying the command
2682 * when previously issued command responsed with error status: FLOGI, PLOGI,
2683 * PRLI, ADISC, LOGO, and FDISC. Based on the ELS command type and the
2684 * returned error status, it makes the decision whether a retry shall be
2685 * issued for the command, and whether a retry shall be made immediately or
2686 * delayed. In the former case, the corresponding ELS command issuing-function
2687 * is called to retry the command. In the later case, the ELS command shall
2688 * be posted to the ndlp delayed event and delayed function timer set to the
2689 * ndlp for the delayed command issusing.
2692 * 0 - No retry of els command is made
2693 * 1 - Immediate or delayed retry of els command is made
2696 lpfc_els_retry(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
2697 struct lpfc_iocbq *rspiocb)
2699 struct lpfc_vport *vport = cmdiocb->vport;
2700 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2701 IOCB_t *irsp = &rspiocb->iocb;
2702 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) cmdiocb->context1;
2703 struct lpfc_dmabuf *pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
2706 int retry = 0, maxretry = lpfc_max_els_tries, delay = 0;
2712 /* Note: context2 may be 0 for internal driver abort
2713 * of delays ELS command.
2716 if (pcmd && pcmd->virt) {
2717 elscmd = (uint32_t *) (pcmd->virt);
2721 if (ndlp && NLP_CHK_NODE_ACT(ndlp))
2722 did = ndlp->nlp_DID;
2724 /* We should only hit this case for retrying PLOGI */
2725 did = irsp->un.elsreq64.remoteID;
2726 ndlp = lpfc_findnode_did(vport, did);
2727 if ((!ndlp || !NLP_CHK_NODE_ACT(ndlp))
2728 && (cmd != ELS_CMD_PLOGI))
2732 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
2733 "Retry ELS: wd7:x%x wd4:x%x did:x%x",
2734 *(((uint32_t *) irsp) + 7), irsp->un.ulpWord[4], ndlp->nlp_DID);
2736 switch (irsp->ulpStatus) {
2737 case IOSTAT_FCP_RSP_ERROR:
2738 case IOSTAT_REMOTE_STOP:
2741 case IOSTAT_LOCAL_REJECT:
2742 switch ((irsp->un.ulpWord[4] & 0xff)) {
2743 case IOERR_LOOP_OPEN_FAILURE:
2744 if (cmd == ELS_CMD_FLOGI) {
2745 if (PCI_DEVICE_ID_HORNET ==
2746 phba->pcidev->device) {
2747 phba->fc_topology = TOPOLOGY_LOOP;
2748 phba->pport->fc_myDID = 0;
2749 phba->alpa_map[0] = 0;
2750 phba->alpa_map[1] = 0;
2753 if (cmd == ELS_CMD_PLOGI && cmdiocb->retry == 0)
2758 case IOERR_ILLEGAL_COMMAND:
2759 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
2760 "0124 Retry illegal cmd x%x "
2761 "retry:x%x delay:x%x\n",
2762 cmd, cmdiocb->retry, delay);
2764 /* All command's retry policy */
2766 if (cmdiocb->retry > 2)
2770 case IOERR_NO_RESOURCES:
2771 logerr = 1; /* HBA out of resources */
2773 if (cmdiocb->retry > 100)
2778 case IOERR_ILLEGAL_FRAME:
2783 case IOERR_SEQUENCE_TIMEOUT:
2784 case IOERR_INVALID_RPI:
2790 case IOSTAT_NPORT_RJT:
2791 case IOSTAT_FABRIC_RJT:
2792 if (irsp->un.ulpWord[4] & RJT_UNAVAIL_TEMP) {
2798 case IOSTAT_NPORT_BSY:
2799 case IOSTAT_FABRIC_BSY:
2800 logerr = 1; /* Fabric / Remote NPort out of resources */
2805 stat.un.lsRjtError = be32_to_cpu(irsp->un.ulpWord[4]);
2806 /* Added for Vendor specifc support
2807 * Just keep retrying for these Rsn / Exp codes
2809 switch (stat.un.b.lsRjtRsnCode) {
2810 case LSRJT_UNABLE_TPC:
2811 if (stat.un.b.lsRjtRsnCodeExp ==
2812 LSEXP_CMD_IN_PROGRESS) {
2813 if (cmd == ELS_CMD_PLOGI) {
2820 if (stat.un.b.lsRjtRsnCodeExp ==
2821 LSEXP_CANT_GIVE_DATA) {
2822 if (cmd == ELS_CMD_PLOGI) {
2829 if (cmd == ELS_CMD_PLOGI) {
2831 maxretry = lpfc_max_els_tries + 1;
2835 if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
2836 (cmd == ELS_CMD_FDISC) &&
2837 (stat.un.b.lsRjtRsnCodeExp == LSEXP_OUT_OF_RESOURCE)){
2838 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
2839 "0125 FDISC Failed (x%x). "
2840 "Fabric out of resources\n",
2841 stat.un.lsRjtError);
2842 lpfc_vport_set_state(vport,
2843 FC_VPORT_NO_FABRIC_RSCS);
2847 case LSRJT_LOGICAL_BSY:
2848 if ((cmd == ELS_CMD_PLOGI) ||
2849 (cmd == ELS_CMD_PRLI)) {
2852 } else if (cmd == ELS_CMD_FDISC) {
2853 /* FDISC retry policy */
2855 if (cmdiocb->retry >= 32)
2861 case LSRJT_LOGICAL_ERR:
2862 /* There are some cases where switches return this
2863 * error when they are not ready and should be returning
2864 * Logical Busy. We should delay every time.
2866 if (cmd == ELS_CMD_FDISC &&
2867 stat.un.b.lsRjtRsnCodeExp == LSEXP_PORT_LOGIN_REQ) {
2873 case LSRJT_PROTOCOL_ERR:
2874 if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
2875 (cmd == ELS_CMD_FDISC) &&
2876 ((stat.un.b.lsRjtRsnCodeExp == LSEXP_INVALID_PNAME) ||
2877 (stat.un.b.lsRjtRsnCodeExp == LSEXP_INVALID_NPORT_ID))
2879 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
2880 "0122 FDISC Failed (x%x). "
2881 "Fabric Detected Bad WWN\n",
2882 stat.un.lsRjtError);
2883 lpfc_vport_set_state(vport,
2884 FC_VPORT_FABRIC_REJ_WWN);
2890 case IOSTAT_INTERMED_RSP:
2898 if (did == FDMI_DID)
2901 if (((cmd == ELS_CMD_FLOGI) || (cmd == ELS_CMD_FDISC)) &&
2902 (phba->fc_topology != TOPOLOGY_LOOP) &&
2903 !lpfc_error_lost_link(irsp)) {
2904 /* FLOGI retry policy */
2908 if (cmdiocb->retry >= 100)
2910 else if (cmdiocb->retry >= 32)
2915 if (maxretry && (cmdiocb->retry >= maxretry)) {
2916 phba->fc_stat.elsRetryExceeded++;
2920 if ((vport->load_flag & FC_UNLOADING) != 0)
2924 if ((cmd == ELS_CMD_PLOGI) || (cmd == ELS_CMD_FDISC)) {
2925 /* Stop retrying PLOGI and FDISC if in FCF discovery */
2926 if (phba->fcf.fcf_flag & FCF_DISCOVERY) {
2927 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
2928 "2849 Stop retry ELS command "
2929 "x%x to remote NPORT x%x, "
2930 "Data: x%x x%x\n", cmd, did,
2931 cmdiocb->retry, delay);
2936 /* Retry ELS command <elsCmd> to remote NPORT <did> */
2937 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
2938 "0107 Retry ELS command x%x to remote "
2939 "NPORT x%x Data: x%x x%x\n",
2940 cmd, did, cmdiocb->retry, delay);
2942 if (((cmd == ELS_CMD_PLOGI) || (cmd == ELS_CMD_ADISC)) &&
2943 ((irsp->ulpStatus != IOSTAT_LOCAL_REJECT) ||
2944 ((irsp->un.ulpWord[4] & 0xff) != IOERR_NO_RESOURCES))) {
2945 /* Don't reset timer for no resources */
2947 /* If discovery / RSCN timer is running, reset it */
2948 if (timer_pending(&vport->fc_disctmo) ||
2949 (vport->fc_flag & FC_RSCN_MODE))
2950 lpfc_set_disctmo(vport);
2953 phba->fc_stat.elsXmitRetry++;
2954 if (ndlp && NLP_CHK_NODE_ACT(ndlp) && delay) {
2955 phba->fc_stat.elsDelayRetry++;
2956 ndlp->nlp_retry = cmdiocb->retry;
2958 /* delay is specified in milliseconds */
2959 mod_timer(&ndlp->nlp_delayfunc,
2960 jiffies + msecs_to_jiffies(delay));
2961 spin_lock_irq(shost->host_lock);
2962 ndlp->nlp_flag |= NLP_DELAY_TMO;
2963 spin_unlock_irq(shost->host_lock);
2965 ndlp->nlp_prev_state = ndlp->nlp_state;
2966 if (cmd == ELS_CMD_PRLI)
2967 lpfc_nlp_set_state(vport, ndlp,
2968 NLP_STE_REG_LOGIN_ISSUE);
2970 lpfc_nlp_set_state(vport, ndlp,
2972 ndlp->nlp_last_elscmd = cmd;
2978 lpfc_issue_els_flogi(vport, ndlp, cmdiocb->retry);
2981 lpfc_issue_els_fdisc(vport, ndlp, cmdiocb->retry);
2984 if (ndlp && NLP_CHK_NODE_ACT(ndlp)) {
2985 ndlp->nlp_prev_state = ndlp->nlp_state;
2986 lpfc_nlp_set_state(vport, ndlp,
2987 NLP_STE_PLOGI_ISSUE);
2989 lpfc_issue_els_plogi(vport, did, cmdiocb->retry);
2992 ndlp->nlp_prev_state = ndlp->nlp_state;
2993 lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
2994 lpfc_issue_els_adisc(vport, ndlp, cmdiocb->retry);
2997 ndlp->nlp_prev_state = ndlp->nlp_state;
2998 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PRLI_ISSUE);
2999 lpfc_issue_els_prli(vport, ndlp, cmdiocb->retry);
3002 ndlp->nlp_prev_state = ndlp->nlp_state;
3003 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
3004 lpfc_issue_els_logo(vport, ndlp, cmdiocb->retry);
3008 /* No retry ELS command <elsCmd> to remote NPORT <did> */
3010 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
3011 "0137 No retry ELS command x%x to remote "
3012 "NPORT x%x: Out of Resources: Error:x%x/%x\n",
3013 cmd, did, irsp->ulpStatus,
3014 irsp->un.ulpWord[4]);
3017 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
3018 "0108 No retry ELS command x%x to remote "
3019 "NPORT x%x Retried:%d Error:x%x/%x\n",
3020 cmd, did, cmdiocb->retry, irsp->ulpStatus,
3021 irsp->un.ulpWord[4]);
3027 * lpfc_els_free_data - Free lpfc dma buffer and data structure with an iocb
3028 * @phba: pointer to lpfc hba data structure.
3029 * @buf_ptr1: pointer to the lpfc DMA buffer data structure.
3031 * This routine releases the lpfc DMA (Direct Memory Access) buffer(s)
3032 * associated with a command IOCB back to the lpfc DMA buffer pool. It first
3033 * checks to see whether there is a lpfc DMA buffer associated with the
3034 * response of the command IOCB. If so, it will be released before releasing
3035 * the lpfc DMA buffer associated with the IOCB itself.
3038 * 0 - Successfully released lpfc DMA buffer (currently, always return 0)
3041 lpfc_els_free_data(struct lpfc_hba *phba, struct lpfc_dmabuf *buf_ptr1)
3043 struct lpfc_dmabuf *buf_ptr;
3045 /* Free the response before processing the command. */
3046 if (!list_empty(&buf_ptr1->list)) {
3047 list_remove_head(&buf_ptr1->list, buf_ptr,
3050 lpfc_mbuf_free(phba, buf_ptr->virt, buf_ptr->phys);
3053 lpfc_mbuf_free(phba, buf_ptr1->virt, buf_ptr1->phys);
3059 * lpfc_els_free_bpl - Free lpfc dma buffer and data structure with bpl
3060 * @phba: pointer to lpfc hba data structure.
3061 * @buf_ptr: pointer to the lpfc dma buffer data structure.
3063 * This routine releases the lpfc Direct Memory Access (DMA) buffer
3064 * associated with a Buffer Pointer List (BPL) back to the lpfc DMA buffer
3068 * 0 - Successfully released lpfc DMA buffer (currently, always return 0)
3071 lpfc_els_free_bpl(struct lpfc_hba *phba, struct lpfc_dmabuf *buf_ptr)
3073 lpfc_mbuf_free(phba, buf_ptr->virt, buf_ptr->phys);
3079 * lpfc_els_free_iocb - Free a command iocb and its associated resources
3080 * @phba: pointer to lpfc hba data structure.
3081 * @elsiocb: pointer to lpfc els command iocb data structure.
3083 * This routine frees a command IOCB and its associated resources. The
3084 * command IOCB data structure contains the reference to various associated
3085 * resources, these fields must be set to NULL if the associated reference
3087 * context1 - reference to ndlp
3088 * context2 - reference to cmd
3089 * context2->next - reference to rsp
3090 * context3 - reference to bpl
3092 * It first properly decrements the reference count held on ndlp for the
3093 * IOCB completion callback function. If LPFC_DELAY_MEM_FREE flag is not
3094 * set, it invokes the lpfc_els_free_data() routine to release the Direct
3095 * Memory Access (DMA) buffers associated with the IOCB. Otherwise, it
3096 * adds the DMA buffer the @phba data structure for the delayed release.
3097 * If reference to the Buffer Pointer List (BPL) is present, the
3098 * lpfc_els_free_bpl() routine is invoked to release the DMA memory
3099 * associated with BPL. Finally, the lpfc_sli_release_iocbq() routine is
3100 * invoked to release the IOCB data structure back to @phba IOCBQ list.
3103 * 0 - Success (currently, always return 0)
3106 lpfc_els_free_iocb(struct lpfc_hba *phba, struct lpfc_iocbq *elsiocb)
3108 struct lpfc_dmabuf *buf_ptr, *buf_ptr1;
3109 struct lpfc_nodelist *ndlp;
3111 ndlp = (struct lpfc_nodelist *)elsiocb->context1;
3113 if (ndlp->nlp_flag & NLP_DEFER_RM) {
3116 /* If the ndlp is not being used by another discovery
3119 if (!lpfc_nlp_not_used(ndlp)) {
3120 /* If ndlp is being used by another discovery
3121 * thread, just clear NLP_DEFER_RM
3123 ndlp->nlp_flag &= ~NLP_DEFER_RM;
3128 elsiocb->context1 = NULL;
3130 /* context2 = cmd, context2->next = rsp, context3 = bpl */
3131 if (elsiocb->context2) {
3132 if (elsiocb->iocb_flag & LPFC_DELAY_MEM_FREE) {
3133 /* Firmware could still be in progress of DMAing
3134 * payload, so don't free data buffer till after
3137 elsiocb->iocb_flag &= ~LPFC_DELAY_MEM_FREE;
3138 buf_ptr = elsiocb->context2;
3139 elsiocb->context2 = NULL;
3142 spin_lock_irq(&phba->hbalock);
3143 if (!list_empty(&buf_ptr->list)) {
3144 list_remove_head(&buf_ptr->list,
3145 buf_ptr1, struct lpfc_dmabuf,
3147 INIT_LIST_HEAD(&buf_ptr1->list);
3148 list_add_tail(&buf_ptr1->list,
3152 INIT_LIST_HEAD(&buf_ptr->list);
3153 list_add_tail(&buf_ptr->list, &phba->elsbuf);
3155 spin_unlock_irq(&phba->hbalock);
3158 buf_ptr1 = (struct lpfc_dmabuf *) elsiocb->context2;
3159 lpfc_els_free_data(phba, buf_ptr1);
3163 if (elsiocb->context3) {
3164 buf_ptr = (struct lpfc_dmabuf *) elsiocb->context3;
3165 lpfc_els_free_bpl(phba, buf_ptr);
3167 lpfc_sli_release_iocbq(phba, elsiocb);
3172 * lpfc_cmpl_els_logo_acc - Completion callback function to logo acc response
3173 * @phba: pointer to lpfc hba data structure.
3174 * @cmdiocb: pointer to lpfc command iocb data structure.
3175 * @rspiocb: pointer to lpfc response iocb data structure.
3177 * This routine is the completion callback function to the Logout (LOGO)
3178 * Accept (ACC) Response ELS command. This routine is invoked to indicate
3179 * the completion of the LOGO process. It invokes the lpfc_nlp_not_used() to
3180 * release the ndlp if it has the last reference remaining (reference count
3181 * is 1). If succeeded (meaning ndlp released), it sets the IOCB context1
3182 * field to NULL to inform the following lpfc_els_free_iocb() routine no
3183 * ndlp reference count needs to be decremented. Otherwise, the ndlp
3184 * reference use-count shall be decremented by the lpfc_els_free_iocb()
3185 * routine. Finally, the lpfc_els_free_iocb() is invoked to release the
3186 * IOCB data structure.
3189 lpfc_cmpl_els_logo_acc(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
3190 struct lpfc_iocbq *rspiocb)
3192 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) cmdiocb->context1;
3193 struct lpfc_vport *vport = cmdiocb->vport;
3196 irsp = &rspiocb->iocb;
3197 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
3198 "ACC LOGO cmpl: status:x%x/x%x did:x%x",
3199 irsp->ulpStatus, irsp->un.ulpWord[4], ndlp->nlp_DID);
3200 /* ACC to LOGO completes to NPort <nlp_DID> */
3201 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
3202 "0109 ACC to LOGO completes to NPort x%x "
3203 "Data: x%x x%x x%x\n",
3204 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
3207 if (ndlp->nlp_state == NLP_STE_NPR_NODE) {
3208 /* NPort Recovery mode or node is just allocated */
3209 if (!lpfc_nlp_not_used(ndlp)) {
3210 /* If the ndlp is being used by another discovery
3211 * thread, just unregister the RPI.
3213 lpfc_unreg_rpi(vport, ndlp);
3215 /* Indicate the node has already released, should
3216 * not reference to it from within lpfc_els_free_iocb.
3218 cmdiocb->context1 = NULL;
3221 lpfc_els_free_iocb(phba, cmdiocb);
3226 * lpfc_mbx_cmpl_dflt_rpi - Completion callbk func for unreg dflt rpi mbox cmd
3227 * @phba: pointer to lpfc hba data structure.
3228 * @pmb: pointer to the driver internal queue element for mailbox command.
3230 * This routine is the completion callback function for unregister default
3231 * RPI (Remote Port Index) mailbox command to the @phba. It simply releases
3232 * the associated lpfc Direct Memory Access (DMA) buffer back to the pool and
3233 * decrements the ndlp reference count held for this completion callback
3234 * function. After that, it invokes the lpfc_nlp_not_used() to check
3235 * whether there is only one reference left on the ndlp. If so, it will
3236 * perform one more decrement and trigger the release of the ndlp.
3239 lpfc_mbx_cmpl_dflt_rpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
3241 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
3242 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2;
3245 * This routine is used to register and unregister in previous SLI
3248 if ((pmb->u.mb.mbxCommand == MBX_UNREG_LOGIN) &&
3249 (phba->sli_rev == LPFC_SLI_REV4))
3250 lpfc_sli4_free_rpi(phba, pmb->u.mb.un.varUnregLogin.rpi);
3252 pmb->context1 = NULL;
3253 pmb->context2 = NULL;
3255 lpfc_mbuf_free(phba, mp->virt, mp->phys);
3257 mempool_free(pmb, phba->mbox_mem_pool);
3258 if (ndlp && NLP_CHK_NODE_ACT(ndlp)) {
3260 /* This is the end of the default RPI cleanup logic for this
3261 * ndlp. If no other discovery threads are using this ndlp.
3262 * we should free all resources associated with it.
3264 lpfc_nlp_not_used(ndlp);
3271 * lpfc_cmpl_els_rsp - Completion callback function for els response iocb cmd
3272 * @phba: pointer to lpfc hba data structure.
3273 * @cmdiocb: pointer to lpfc command iocb data structure.
3274 * @rspiocb: pointer to lpfc response iocb data structure.
3276 * This routine is the completion callback function for ELS Response IOCB
3277 * command. In normal case, this callback function just properly sets the
3278 * nlp_flag bitmap in the ndlp data structure, if the mbox command reference
3279 * field in the command IOCB is not NULL, the referred mailbox command will
3280 * be send out, and then invokes the lpfc_els_free_iocb() routine to release
3281 * the IOCB. Under error conditions, such as when a LS_RJT is returned or a
3282 * link down event occurred during the discovery, the lpfc_nlp_not_used()
3283 * routine shall be invoked trying to release the ndlp if no other threads
3284 * are currently referring it.
3287 lpfc_cmpl_els_rsp(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
3288 struct lpfc_iocbq *rspiocb)
3290 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) cmdiocb->context1;
3291 struct lpfc_vport *vport = ndlp ? ndlp->vport : NULL;
3292 struct Scsi_Host *shost = vport ? lpfc_shost_from_vport(vport) : NULL;
3295 LPFC_MBOXQ_t *mbox = NULL;
3296 struct lpfc_dmabuf *mp = NULL;
3297 uint32_t ls_rjt = 0;
3299 irsp = &rspiocb->iocb;
3301 if (cmdiocb->context_un.mbox)
3302 mbox = cmdiocb->context_un.mbox;
3304 /* First determine if this is a LS_RJT cmpl. Note, this callback
3305 * function can have cmdiocb->contest1 (ndlp) field set to NULL.
3307 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) cmdiocb->context2)->virt);
3308 if (ndlp && NLP_CHK_NODE_ACT(ndlp) &&
3309 (*((uint32_t *) (pcmd)) == ELS_CMD_LS_RJT)) {
3310 /* A LS_RJT associated with Default RPI cleanup has its own
3311 * separate code path.
3313 if (!(ndlp->nlp_flag & NLP_RM_DFLT_RPI))
3317 /* Check to see if link went down during discovery */
3318 if (!ndlp || !NLP_CHK_NODE_ACT(ndlp) || lpfc_els_chk_latt(vport)) {
3320 mp = (struct lpfc_dmabuf *) mbox->context1;
3322 lpfc_mbuf_free(phba, mp->virt, mp->phys);
3325 mempool_free(mbox, phba->mbox_mem_pool);
3327 if (ndlp && NLP_CHK_NODE_ACT(ndlp) &&
3328 (ndlp->nlp_flag & NLP_RM_DFLT_RPI))
3329 if (lpfc_nlp_not_used(ndlp)) {
3331 /* Indicate the node has already released,
3332 * should not reference to it from within
3333 * the routine lpfc_els_free_iocb.
3335 cmdiocb->context1 = NULL;
3340 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
3341 "ELS rsp cmpl: status:x%x/x%x did:x%x",
3342 irsp->ulpStatus, irsp->un.ulpWord[4],
3343 cmdiocb->iocb.un.elsreq64.remoteID);
3344 /* ELS response tag <ulpIoTag> completes */
3345 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
3346 "0110 ELS response tag x%x completes "
3347 "Data: x%x x%x x%x x%x x%x x%x x%x\n",
3348 cmdiocb->iocb.ulpIoTag, rspiocb->iocb.ulpStatus,
3349 rspiocb->iocb.un.ulpWord[4], rspiocb->iocb.ulpTimeout,
3350 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
3353 if ((rspiocb->iocb.ulpStatus == 0)
3354 && (ndlp->nlp_flag & NLP_ACC_REGLOGIN)) {
3355 lpfc_unreg_rpi(vport, ndlp);
3356 /* Increment reference count to ndlp to hold the
3357 * reference to ndlp for the callback function.
3359 mbox->context2 = lpfc_nlp_get(ndlp);
3360 mbox->vport = vport;
3361 if (ndlp->nlp_flag & NLP_RM_DFLT_RPI) {
3362 mbox->mbox_flag |= LPFC_MBX_IMED_UNREG;
3363 mbox->mbox_cmpl = lpfc_mbx_cmpl_dflt_rpi;
3366 mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login;
3367 ndlp->nlp_prev_state = ndlp->nlp_state;
3368 lpfc_nlp_set_state(vport, ndlp,
3369 NLP_STE_REG_LOGIN_ISSUE);
3371 if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT)
3372 != MBX_NOT_FINISHED)
3375 /* Decrement the ndlp reference count we
3376 * set for this failed mailbox command.
3380 /* ELS rsp: Cannot issue reg_login for <NPortid> */
3381 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
3382 "0138 ELS rsp: Cannot issue reg_login for x%x "
3383 "Data: x%x x%x x%x\n",
3384 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
3387 if (lpfc_nlp_not_used(ndlp)) {
3389 /* Indicate node has already been released,
3390 * should not reference to it from within
3391 * the routine lpfc_els_free_iocb.
3393 cmdiocb->context1 = NULL;
3396 /* Do not drop node for lpfc_els_abort'ed ELS cmds */
3397 if (!lpfc_error_lost_link(irsp) &&
3398 ndlp->nlp_flag & NLP_ACC_REGLOGIN) {
3399 if (lpfc_nlp_not_used(ndlp)) {
3401 /* Indicate node has already been
3402 * released, should not reference
3403 * to it from within the routine
3404 * lpfc_els_free_iocb.
3406 cmdiocb->context1 = NULL;
3410 mp = (struct lpfc_dmabuf *) mbox->context1;
3412 lpfc_mbuf_free(phba, mp->virt, mp->phys);
3415 mempool_free(mbox, phba->mbox_mem_pool);
3418 if (ndlp && NLP_CHK_NODE_ACT(ndlp)) {
3419 spin_lock_irq(shost->host_lock);
3420 ndlp->nlp_flag &= ~(NLP_ACC_REGLOGIN | NLP_RM_DFLT_RPI);
3421 spin_unlock_irq(shost->host_lock);
3423 /* If the node is not being used by another discovery thread,
3424 * and we are sending a reject, we are done with it.
3425 * Release driver reference count here and free associated
3429 if (lpfc_nlp_not_used(ndlp))
3430 /* Indicate node has already been released,
3431 * should not reference to it from within
3432 * the routine lpfc_els_free_iocb.
3434 cmdiocb->context1 = NULL;
3437 lpfc_els_free_iocb(phba, cmdiocb);
3442 * lpfc_els_rsp_acc - Prepare and issue an acc response iocb command
3443 * @vport: pointer to a host virtual N_Port data structure.
3444 * @flag: the els command code to be accepted.
3445 * @oldiocb: pointer to the original lpfc command iocb data structure.
3446 * @ndlp: pointer to a node-list data structure.
3447 * @mbox: pointer to the driver internal queue element for mailbox command.
3449 * This routine prepares and issues an Accept (ACC) response IOCB
3450 * command. It uses the @flag to properly set up the IOCB field for the
3451 * specific ACC response command to be issued and invokes the
3452 * lpfc_sli_issue_iocb() routine to send out ACC response IOCB. If a
3453 * @mbox pointer is passed in, it will be put into the context_un.mbox
3454 * field of the IOCB for the completion callback function to issue the
3455 * mailbox command to the HBA later when callback is invoked.
3457 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
3458 * will be incremented by 1 for holding the ndlp and the reference to ndlp
3459 * will be stored into the context1 field of the IOCB for the completion
3460 * callback function to the corresponding response ELS IOCB command.
3463 * 0 - Successfully issued acc response
3464 * 1 - Failed to issue acc response
3467 lpfc_els_rsp_acc(struct lpfc_vport *vport, uint32_t flag,
3468 struct lpfc_iocbq *oldiocb, struct lpfc_nodelist *ndlp,
3471 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3472 struct lpfc_hba *phba = vport->phba;
3475 struct lpfc_iocbq *elsiocb;
3476 struct lpfc_sli *psli;
3480 ELS_PKT *els_pkt_ptr;
3483 oldcmd = &oldiocb->iocb;
3487 cmdsize = sizeof(uint32_t);
3488 elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry,
3489 ndlp, ndlp->nlp_DID, ELS_CMD_ACC);
3491 spin_lock_irq(shost->host_lock);
3492 ndlp->nlp_flag &= ~NLP_LOGO_ACC;
3493 spin_unlock_irq(shost->host_lock);
3497 icmd = &elsiocb->iocb;
3498 icmd->ulpContext = oldcmd->ulpContext; /* Xri */
3499 pcmd = (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
3500 *((uint32_t *) (pcmd)) = ELS_CMD_ACC;
3501 pcmd += sizeof(uint32_t);
3503 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
3504 "Issue ACC: did:x%x flg:x%x",
3505 ndlp->nlp_DID, ndlp->nlp_flag, 0);
3508 cmdsize = (sizeof(struct serv_parm) + sizeof(uint32_t));
3509 elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry,
3510 ndlp, ndlp->nlp_DID, ELS_CMD_ACC);
3514 icmd = &elsiocb->iocb;
3515 icmd->ulpContext = oldcmd->ulpContext; /* Xri */
3516 pcmd = (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
3519 elsiocb->context_un.mbox = mbox;
3521 *((uint32_t *) (pcmd)) = ELS_CMD_ACC;
3522 pcmd += sizeof(uint32_t);
3523 memcpy(pcmd, &vport->fc_sparam, sizeof(struct serv_parm));
3525 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
3526 "Issue ACC PLOGI: did:x%x flg:x%x",
3527 ndlp->nlp_DID, ndlp->nlp_flag, 0);
3530 cmdsize = sizeof(uint32_t) + sizeof(PRLO);
3531 elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry,
3532 ndlp, ndlp->nlp_DID, ELS_CMD_PRLO);
3536 icmd = &elsiocb->iocb;
3537 icmd->ulpContext = oldcmd->ulpContext; /* Xri */
3538 pcmd = (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
3540 memcpy(pcmd, ((struct lpfc_dmabuf *) oldiocb->context2)->virt,
3541 sizeof(uint32_t) + sizeof(PRLO));
3542 *((uint32_t *) (pcmd)) = ELS_CMD_PRLO_ACC;
3543 els_pkt_ptr = (ELS_PKT *) pcmd;
3544 els_pkt_ptr->un.prlo.acceptRspCode = PRLO_REQ_EXECUTED;
3546 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
3547 "Issue ACC PRLO: did:x%x flg:x%x",
3548 ndlp->nlp_DID, ndlp->nlp_flag, 0);
3553 /* Xmit ELS ACC response tag <ulpIoTag> */
3554 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
3555 "0128 Xmit ELS ACC response tag x%x, XRI: x%x, "
3556 "DID: x%x, nlp_flag: x%x nlp_state: x%x RPI: x%x\n",
3557 elsiocb->iotag, elsiocb->iocb.ulpContext,
3558 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
3560 if (ndlp->nlp_flag & NLP_LOGO_ACC) {
3561 spin_lock_irq(shost->host_lock);
3562 ndlp->nlp_flag &= ~NLP_LOGO_ACC;
3563 spin_unlock_irq(shost->host_lock);
3564 elsiocb->iocb_cmpl = lpfc_cmpl_els_logo_acc;
3566 elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp;
3569 phba->fc_stat.elsXmitACC++;
3570 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
3571 if (rc == IOCB_ERROR) {
3572 lpfc_els_free_iocb(phba, elsiocb);
3579 * lpfc_els_rsp_reject - Propare and issue a rjt response iocb command
3580 * @vport: pointer to a virtual N_Port data structure.
3582 * @oldiocb: pointer to the original lpfc command iocb data structure.
3583 * @ndlp: pointer to a node-list data structure.
3584 * @mbox: pointer to the driver internal queue element for mailbox command.
3586 * This routine prepares and issue an Reject (RJT) response IOCB
3587 * command. If a @mbox pointer is passed in, it will be put into the
3588 * context_un.mbox field of the IOCB for the completion callback function
3589 * to issue to the HBA later.
3591 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
3592 * will be incremented by 1 for holding the ndlp and the reference to ndlp
3593 * will be stored into the context1 field of the IOCB for the completion
3594 * callback function to the reject response ELS IOCB command.
3597 * 0 - Successfully issued reject response
3598 * 1 - Failed to issue reject response
3601 lpfc_els_rsp_reject(struct lpfc_vport *vport, uint32_t rejectError,
3602 struct lpfc_iocbq *oldiocb, struct lpfc_nodelist *ndlp,
3605 struct lpfc_hba *phba = vport->phba;
3608 struct lpfc_iocbq *elsiocb;
3609 struct lpfc_sli *psli;
3615 cmdsize = 2 * sizeof(uint32_t);
3616 elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp,
3617 ndlp->nlp_DID, ELS_CMD_LS_RJT);
3621 icmd = &elsiocb->iocb;
3622 oldcmd = &oldiocb->iocb;
3623 icmd->ulpContext = oldcmd->ulpContext; /* Xri */
3624 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
3626 *((uint32_t *) (pcmd)) = ELS_CMD_LS_RJT;
3627 pcmd += sizeof(uint32_t);
3628 *((uint32_t *) (pcmd)) = rejectError;
3631 elsiocb->context_un.mbox = mbox;
3633 /* Xmit ELS RJT <err> response tag <ulpIoTag> */
3634 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
3635 "0129 Xmit ELS RJT x%x response tag x%x "
3636 "xri x%x, did x%x, nlp_flag x%x, nlp_state x%x, "
3638 rejectError, elsiocb->iotag,
3639 elsiocb->iocb.ulpContext, ndlp->nlp_DID,
3640 ndlp->nlp_flag, ndlp->nlp_state, ndlp->nlp_rpi);
3641 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
3642 "Issue LS_RJT: did:x%x flg:x%x err:x%x",
3643 ndlp->nlp_DID, ndlp->nlp_flag, rejectError);
3645 phba->fc_stat.elsXmitLSRJT++;
3646 elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp;
3647 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
3649 if (rc == IOCB_ERROR) {
3650 lpfc_els_free_iocb(phba, elsiocb);
3657 * lpfc_els_rsp_adisc_acc - Prepare and issue acc response to adisc iocb cmd
3658 * @vport: pointer to a virtual N_Port data structure.
3659 * @oldiocb: pointer to the original lpfc command iocb data structure.
3660 * @ndlp: pointer to a node-list data structure.
3662 * This routine prepares and issues an Accept (ACC) response to Address
3663 * Discover (ADISC) ELS command. It simply prepares the payload of the IOCB
3664 * and invokes the lpfc_sli_issue_iocb() routine to send out the command.
3666 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
3667 * will be incremented by 1 for holding the ndlp and the reference to ndlp
3668 * will be stored into the context1 field of the IOCB for the completion
3669 * callback function to the ADISC Accept response ELS IOCB command.
3672 * 0 - Successfully issued acc adisc response
3673 * 1 - Failed to issue adisc acc response
3676 lpfc_els_rsp_adisc_acc(struct lpfc_vport *vport, struct lpfc_iocbq *oldiocb,
3677 struct lpfc_nodelist *ndlp)
3679 struct lpfc_hba *phba = vport->phba;
3681 IOCB_t *icmd, *oldcmd;
3682 struct lpfc_iocbq *elsiocb;
3687 cmdsize = sizeof(uint32_t) + sizeof(ADISC);
3688 elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp,
3689 ndlp->nlp_DID, ELS_CMD_ACC);
3693 icmd = &elsiocb->iocb;
3694 oldcmd = &oldiocb->iocb;
3695 icmd->ulpContext = oldcmd->ulpContext; /* Xri */
3697 /* Xmit ADISC ACC response tag <ulpIoTag> */
3698 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
3699 "0130 Xmit ADISC ACC response iotag x%x xri: "
3700 "x%x, did x%x, nlp_flag x%x, nlp_state x%x rpi x%x\n",
3701 elsiocb->iotag, elsiocb->iocb.ulpContext,
3702 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
3704 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
3706 *((uint32_t *) (pcmd)) = ELS_CMD_ACC;
3707 pcmd += sizeof(uint32_t);
3709 ap = (ADISC *) (pcmd);
3710 ap->hardAL_PA = phba->fc_pref_ALPA;
3711 memcpy(&ap->portName, &vport->fc_portname, sizeof(struct lpfc_name));
3712 memcpy(&ap->nodeName, &vport->fc_nodename, sizeof(struct lpfc_name));
3713 ap->DID = be32_to_cpu(vport->fc_myDID);
3715 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
3716 "Issue ACC ADISC: did:x%x flg:x%x",
3717 ndlp->nlp_DID, ndlp->nlp_flag, 0);
3719 phba->fc_stat.elsXmitACC++;
3720 elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp;
3721 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
3722 if (rc == IOCB_ERROR) {
3723 lpfc_els_free_iocb(phba, elsiocb);
3730 * lpfc_els_rsp_prli_acc - Prepare and issue acc response to prli iocb cmd
3731 * @vport: pointer to a virtual N_Port data structure.
3732 * @oldiocb: pointer to the original lpfc command iocb data structure.
3733 * @ndlp: pointer to a node-list data structure.
3735 * This routine prepares and issues an Accept (ACC) response to Process
3736 * Login (PRLI) ELS command. It simply prepares the payload of the IOCB
3737 * and invokes the lpfc_sli_issue_iocb() routine to send out the command.
3739 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
3740 * will be incremented by 1 for holding the ndlp and the reference to ndlp
3741 * will be stored into the context1 field of the IOCB for the completion
3742 * callback function to the PRLI Accept response ELS IOCB command.
3745 * 0 - Successfully issued acc prli response
3746 * 1 - Failed to issue acc prli response
3749 lpfc_els_rsp_prli_acc(struct lpfc_vport *vport, struct lpfc_iocbq *oldiocb,
3750 struct lpfc_nodelist *ndlp)
3752 struct lpfc_hba *phba = vport->phba;
3757 struct lpfc_iocbq *elsiocb;
3758 struct lpfc_sli *psli;
3765 cmdsize = sizeof(uint32_t) + sizeof(PRLI);
3766 elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp,
3767 ndlp->nlp_DID, (ELS_CMD_ACC | (ELS_CMD_PRLI & ~ELS_RSP_MASK)));
3771 icmd = &elsiocb->iocb;
3772 oldcmd = &oldiocb->iocb;
3773 icmd->ulpContext = oldcmd->ulpContext; /* Xri */
3774 /* Xmit PRLI ACC response tag <ulpIoTag> */
3775 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
3776 "0131 Xmit PRLI ACC response tag x%x xri x%x, "
3777 "did x%x, nlp_flag x%x, nlp_state x%x, rpi x%x\n",
3778 elsiocb->iotag, elsiocb->iocb.ulpContext,
3779 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
3781 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
3783 *((uint32_t *) (pcmd)) = (ELS_CMD_ACC | (ELS_CMD_PRLI & ~ELS_RSP_MASK));
3784 pcmd += sizeof(uint32_t);
3786 /* For PRLI, remainder of payload is PRLI parameter page */
3787 memset(pcmd, 0, sizeof(PRLI));
3789 npr = (PRLI *) pcmd;
3792 * If the remote port is a target and our firmware version is 3.20 or
3793 * later, set the following bits for FC-TAPE support.
3795 if ((ndlp->nlp_type & NLP_FCP_TARGET) &&
3796 (vpd->rev.feaLevelHigh >= 0x02)) {
3797 npr->ConfmComplAllowed = 1;
3799 npr->TaskRetryIdReq = 1;
3802 npr->acceptRspCode = PRLI_REQ_EXECUTED;
3803 npr->estabImagePair = 1;
3804 npr->readXferRdyDis = 1;
3805 npr->ConfmComplAllowed = 1;
3807 npr->prliType = PRLI_FCP_TYPE;
3808 npr->initiatorFunc = 1;
3810 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
3811 "Issue ACC PRLI: did:x%x flg:x%x",
3812 ndlp->nlp_DID, ndlp->nlp_flag, 0);
3814 phba->fc_stat.elsXmitACC++;
3815 elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp;
3817 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
3818 if (rc == IOCB_ERROR) {
3819 lpfc_els_free_iocb(phba, elsiocb);
3826 * lpfc_els_rsp_rnid_acc - Issue rnid acc response iocb command
3827 * @vport: pointer to a virtual N_Port data structure.
3828 * @format: rnid command format.
3829 * @oldiocb: pointer to the original lpfc command iocb data structure.
3830 * @ndlp: pointer to a node-list data structure.
3832 * This routine issues a Request Node Identification Data (RNID) Accept
3833 * (ACC) response. It constructs the RNID ACC response command according to
3834 * the proper @format and then calls the lpfc_sli_issue_iocb() routine to
3835 * issue the response. Note that this command does not need to hold the ndlp
3836 * reference count for the callback. So, the ndlp reference count taken by
3837 * the lpfc_prep_els_iocb() routine is put back and the context1 field of
3838 * IOCB is set to NULL to indicate to the lpfc_els_free_iocb() routine that
3839 * there is no ndlp reference available.
3841 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
3842 * will be incremented by 1 for holding the ndlp and the reference to ndlp
3843 * will be stored into the context1 field of the IOCB for the completion
3844 * callback function. However, for the RNID Accept Response ELS command,
3845 * this is undone later by this routine after the IOCB is allocated.
3848 * 0 - Successfully issued acc rnid response
3849 * 1 - Failed to issue acc rnid response
3852 lpfc_els_rsp_rnid_acc(struct lpfc_vport *vport, uint8_t format,
3853 struct lpfc_iocbq *oldiocb, struct lpfc_nodelist *ndlp)
3855 struct lpfc_hba *phba = vport->phba;
3857 IOCB_t *icmd, *oldcmd;
3858 struct lpfc_iocbq *elsiocb;
3859 struct lpfc_sli *psli;
3865 cmdsize = sizeof(uint32_t) + sizeof(uint32_t)
3866 + (2 * sizeof(struct lpfc_name));
3868 cmdsize += sizeof(RNID_TOP_DISC);
3870 elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp,
3871 ndlp->nlp_DID, ELS_CMD_ACC);
3875 icmd = &elsiocb->iocb;
3876 oldcmd = &oldiocb->iocb;
3877 icmd->ulpContext = oldcmd->ulpContext; /* Xri */
3878 /* Xmit RNID ACC response tag <ulpIoTag> */
3879 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
3880 "0132 Xmit RNID ACC response tag x%x xri x%x\n",
3881 elsiocb->iotag, elsiocb->iocb.ulpContext);
3882 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
3883 *((uint32_t *) (pcmd)) = ELS_CMD_ACC;
3884 pcmd += sizeof(uint32_t);
3886 memset(pcmd, 0, sizeof(RNID));
3887 rn = (RNID *) (pcmd);
3888 rn->Format = format;
3889 rn->CommonLen = (2 * sizeof(struct lpfc_name));
3890 memcpy(&rn->portName, &vport->fc_portname, sizeof(struct lpfc_name));
3891 memcpy(&rn->nodeName, &vport->fc_nodename, sizeof(struct lpfc_name));
3894 rn->SpecificLen = 0;
3896 case RNID_TOPOLOGY_DISC:
3897 rn->SpecificLen = sizeof(RNID_TOP_DISC);
3898 memcpy(&rn->un.topologyDisc.portName,
3899 &vport->fc_portname, sizeof(struct lpfc_name));
3900 rn->un.topologyDisc.unitType = RNID_HBA;
3901 rn->un.topologyDisc.physPort = 0;
3902 rn->un.topologyDisc.attachedNodes = 0;
3906 rn->SpecificLen = 0;
3910 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
3911 "Issue ACC RNID: did:x%x flg:x%x",
3912 ndlp->nlp_DID, ndlp->nlp_flag, 0);
3914 phba->fc_stat.elsXmitACC++;
3915 elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp;
3917 elsiocb->context1 = NULL; /* Don't need ndlp for cmpl,
3918 * it could be freed */
3920 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
3921 if (rc == IOCB_ERROR) {
3922 lpfc_els_free_iocb(phba, elsiocb);
3929 * lpfc_els_disc_adisc - Issue remaining adisc iocbs to npr nodes of a vport
3930 * @vport: pointer to a host virtual N_Port data structure.
3932 * This routine issues Address Discover (ADISC) ELS commands to those
3933 * N_Ports which are in node port recovery state and ADISC has not been issued
3934 * for the @vport. Each time an ELS ADISC IOCB is issued by invoking the
3935 * lpfc_issue_els_adisc() routine, the per @vport number of discover count
3936 * (num_disc_nodes) shall be incremented. If the num_disc_nodes reaches a
3937 * pre-configured threshold (cfg_discovery_threads), the @vport fc_flag will
3938 * be marked with FC_NLP_MORE bit and the process of issuing remaining ADISC
3939 * IOCBs quit for later pick up. On the other hand, after walking through
3940 * all the ndlps with the @vport and there is none ADISC IOCB issued, the
3941 * @vport fc_flag shall be cleared with FC_NLP_MORE bit indicating there is
3942 * no more ADISC need to be sent.
3945 * The number of N_Ports with adisc issued.
3948 lpfc_els_disc_adisc(struct lpfc_vport *vport)
3950 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3951 struct lpfc_nodelist *ndlp, *next_ndlp;
3954 /* go thru NPR nodes and issue any remaining ELS ADISCs */
3955 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) {
3956 if (!NLP_CHK_NODE_ACT(ndlp))
3958 if (ndlp->nlp_state == NLP_STE_NPR_NODE &&
3959 (ndlp->nlp_flag & NLP_NPR_2B_DISC) != 0 &&
3960 (ndlp->nlp_flag & NLP_NPR_ADISC) != 0) {
3961 spin_lock_irq(shost->host_lock);
3962 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
3963 spin_unlock_irq(shost->host_lock);
3964 ndlp->nlp_prev_state = ndlp->nlp_state;
3965 lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
3966 lpfc_issue_els_adisc(vport, ndlp, 0);
3968 vport->num_disc_nodes++;
3969 if (vport->num_disc_nodes >=
3970 vport->cfg_discovery_threads) {
3971 spin_lock_irq(shost->host_lock);
3972 vport->fc_flag |= FC_NLP_MORE;
3973 spin_unlock_irq(shost->host_lock);
3978 if (sentadisc == 0) {
3979 spin_lock_irq(shost->host_lock);
3980 vport->fc_flag &= ~FC_NLP_MORE;
3981 spin_unlock_irq(shost->host_lock);
3987 * lpfc_els_disc_plogi - Issue plogi for all npr nodes of a vport before adisc
3988 * @vport: pointer to a host virtual N_Port data structure.
3990 * This routine issues Port Login (PLOGI) ELS commands to all the N_Ports
3991 * which are in node port recovery state, with a @vport. Each time an ELS
3992 * ADISC PLOGI IOCB is issued by invoking the lpfc_issue_els_plogi() routine,
3993 * the per @vport number of discover count (num_disc_nodes) shall be
3994 * incremented. If the num_disc_nodes reaches a pre-configured threshold
3995 * (cfg_discovery_threads), the @vport fc_flag will be marked with FC_NLP_MORE
3996 * bit set and quit the process of issuing remaining ADISC PLOGIN IOCBs for
3997 * later pick up. On the other hand, after walking through all the ndlps with
3998 * the @vport and there is none ADISC PLOGI IOCB issued, the @vport fc_flag
3999 * shall be cleared with the FC_NLP_MORE bit indicating there is no more ADISC
4000 * PLOGI need to be sent.
4003 * The number of N_Ports with plogi issued.
4006 lpfc_els_disc_plogi(struct lpfc_vport *vport)
4008 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4009 struct lpfc_nodelist *ndlp, *next_ndlp;
4012 /* go thru NPR nodes and issue any remaining ELS PLOGIs */
4013 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) {
4014 if (!NLP_CHK_NODE_ACT(ndlp))
4016 if (ndlp->nlp_state == NLP_STE_NPR_NODE &&
4017 (ndlp->nlp_flag & NLP_NPR_2B_DISC) != 0 &&
4018 (ndlp->nlp_flag & NLP_DELAY_TMO) == 0 &&
4019 (ndlp->nlp_flag & NLP_NPR_ADISC) == 0) {
4020 ndlp->nlp_prev_state = ndlp->nlp_state;
4021 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
4022 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
4024 vport->num_disc_nodes++;
4025 if (vport->num_disc_nodes >=
4026 vport->cfg_discovery_threads) {
4027 spin_lock_irq(shost->host_lock);
4028 vport->fc_flag |= FC_NLP_MORE;
4029 spin_unlock_irq(shost->host_lock);
4035 lpfc_set_disctmo(vport);
4038 spin_lock_irq(shost->host_lock);
4039 vport->fc_flag &= ~FC_NLP_MORE;
4040 spin_unlock_irq(shost->host_lock);
4046 * lpfc_els_flush_rscn - Clean up any rscn activities with a vport
4047 * @vport: pointer to a host virtual N_Port data structure.
4049 * This routine cleans up any Registration State Change Notification
4050 * (RSCN) activity with a @vport. Note that the fc_rscn_flush flag of the
4051 * @vport together with the host_lock is used to prevent multiple thread
4052 * trying to access the RSCN array on a same @vport at the same time.
4055 lpfc_els_flush_rscn(struct lpfc_vport *vport)
4057 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4058 struct lpfc_hba *phba = vport->phba;
4061 spin_lock_irq(shost->host_lock);
4062 if (vport->fc_rscn_flush) {
4063 /* Another thread is walking fc_rscn_id_list on this vport */
4064 spin_unlock_irq(shost->host_lock);
4067 /* Indicate we are walking lpfc_els_flush_rscn on this vport */
4068 vport->fc_rscn_flush = 1;
4069 spin_unlock_irq(shost->host_lock);
4071 for (i = 0; i < vport->fc_rscn_id_cnt; i++) {
4072 lpfc_in_buf_free(phba, vport->fc_rscn_id_list[i]);
4073 vport->fc_rscn_id_list[i] = NULL;
4075 spin_lock_irq(shost->host_lock);
4076 vport->fc_rscn_id_cnt = 0;
4077 vport->fc_flag &= ~(FC_RSCN_MODE | FC_RSCN_DISCOVERY);
4078 spin_unlock_irq(shost->host_lock);
4079 lpfc_can_disctmo(vport);
4080 /* Indicate we are done walking this fc_rscn_id_list */
4081 vport->fc_rscn_flush = 0;
4085 * lpfc_rscn_payload_check - Check whether there is a pending rscn to a did
4086 * @vport: pointer to a host virtual N_Port data structure.
4087 * @did: remote destination port identifier.
4089 * This routine checks whether there is any pending Registration State
4090 * Configuration Notification (RSCN) to a @did on @vport.
4093 * None zero - The @did matched with a pending rscn
4094 * 0 - not able to match @did with a pending rscn
4097 lpfc_rscn_payload_check(struct lpfc_vport *vport, uint32_t did)
4102 uint32_t payload_len, i;
4103 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4105 ns_did.un.word = did;
4107 /* Never match fabric nodes for RSCNs */
4108 if ((did & Fabric_DID_MASK) == Fabric_DID_MASK)
4111 /* If we are doing a FULL RSCN rediscovery, match everything */
4112 if (vport->fc_flag & FC_RSCN_DISCOVERY)
4115 spin_lock_irq(shost->host_lock);
4116 if (vport->fc_rscn_flush) {
4117 /* Another thread is walking fc_rscn_id_list on this vport */
4118 spin_unlock_irq(shost->host_lock);
4121 /* Indicate we are walking fc_rscn_id_list on this vport */
4122 vport->fc_rscn_flush = 1;
4123 spin_unlock_irq(shost->host_lock);
4124 for (i = 0; i < vport->fc_rscn_id_cnt; i++) {
4125 lp = vport->fc_rscn_id_list[i]->virt;
4126 payload_len = be32_to_cpu(*lp++ & ~ELS_CMD_MASK);
4127 payload_len -= sizeof(uint32_t); /* take off word 0 */
4128 while (payload_len) {
4129 rscn_did.un.word = be32_to_cpu(*lp++);
4130 payload_len -= sizeof(uint32_t);
4131 switch (rscn_did.un.b.resv & RSCN_ADDRESS_FORMAT_MASK) {
4132 case RSCN_ADDRESS_FORMAT_PORT:
4133 if ((ns_did.un.b.domain == rscn_did.un.b.domain)
4134 && (ns_did.un.b.area == rscn_did.un.b.area)
4135 && (ns_did.un.b.id == rscn_did.un.b.id))
4136 goto return_did_out;
4138 case RSCN_ADDRESS_FORMAT_AREA:
4139 if ((ns_did.un.b.domain == rscn_did.un.b.domain)
4140 && (ns_did.un.b.area == rscn_did.un.b.area))
4141 goto return_did_out;
4143 case RSCN_ADDRESS_FORMAT_DOMAIN:
4144 if (ns_did.un.b.domain == rscn_did.un.b.domain)
4145 goto return_did_out;
4147 case RSCN_ADDRESS_FORMAT_FABRIC:
4148 goto return_did_out;
4152 /* Indicate we are done with walking fc_rscn_id_list on this vport */
4153 vport->fc_rscn_flush = 0;
4156 /* Indicate we are done with walking fc_rscn_id_list on this vport */
4157 vport->fc_rscn_flush = 0;
4162 * lpfc_rscn_recovery_check - Send recovery event to vport nodes matching rscn
4163 * @vport: pointer to a host virtual N_Port data structure.
4165 * This routine sends recovery (NLP_EVT_DEVICE_RECOVERY) event to the
4166 * state machine for a @vport's nodes that are with pending RSCN (Registration
4167 * State Change Notification).
4170 * 0 - Successful (currently alway return 0)
4173 lpfc_rscn_recovery_check(struct lpfc_vport *vport)
4175 struct lpfc_nodelist *ndlp = NULL;
4177 /* Move all affected nodes by pending RSCNs to NPR state. */
4178 list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
4179 if (!NLP_CHK_NODE_ACT(ndlp) ||
4180 (ndlp->nlp_state == NLP_STE_UNUSED_NODE) ||
4181 !lpfc_rscn_payload_check(vport, ndlp->nlp_DID))
4183 lpfc_disc_state_machine(vport, ndlp, NULL,
4184 NLP_EVT_DEVICE_RECOVERY);
4185 lpfc_cancel_retry_delay_tmo(vport, ndlp);
4191 * lpfc_send_rscn_event - Send an RSCN event to management application
4192 * @vport: pointer to a host virtual N_Port data structure.
4193 * @cmdiocb: pointer to lpfc command iocb data structure.
4195 * lpfc_send_rscn_event sends an RSCN netlink event to management
4199 lpfc_send_rscn_event(struct lpfc_vport *vport,
4200 struct lpfc_iocbq *cmdiocb)
4202 struct lpfc_dmabuf *pcmd;
4203 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4204 uint32_t *payload_ptr;
4205 uint32_t payload_len;
4206 struct lpfc_rscn_event_header *rscn_event_data;
4208 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
4209 payload_ptr = (uint32_t *) pcmd->virt;
4210 payload_len = be32_to_cpu(*payload_ptr & ~ELS_CMD_MASK);
4212 rscn_event_data = kmalloc(sizeof(struct lpfc_rscn_event_header) +
4213 payload_len, GFP_KERNEL);
4214 if (!rscn_event_data) {
4215 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
4216 "0147 Failed to allocate memory for RSCN event\n");
4219 rscn_event_data->event_type = FC_REG_RSCN_EVENT;
4220 rscn_event_data->payload_length = payload_len;
4221 memcpy(rscn_event_data->rscn_payload, payload_ptr,
4224 fc_host_post_vendor_event(shost,
4225 fc_get_event_number(),
4226 sizeof(struct lpfc_els_event_header) + payload_len,
4227 (char *)rscn_event_data,
4230 kfree(rscn_event_data);
4234 * lpfc_els_rcv_rscn - Process an unsolicited rscn iocb
4235 * @vport: pointer to a host virtual N_Port data structure.
4236 * @cmdiocb: pointer to lpfc command iocb data structure.
4237 * @ndlp: pointer to a node-list data structure.
4239 * This routine processes an unsolicited RSCN (Registration State Change
4240 * Notification) IOCB. First, the payload of the unsolicited RSCN is walked
4241 * to invoke fc_host_post_event() routine to the FC transport layer. If the
4242 * discover state machine is about to begin discovery, it just accepts the
4243 * RSCN and the discovery process will satisfy the RSCN. If this RSCN only
4244 * contains N_Port IDs for other vports on this HBA, it just accepts the
4245 * RSCN and ignore processing it. If the state machine is in the recovery
4246 * state, the fc_rscn_id_list of this @vport is walked and the
4247 * lpfc_rscn_recovery_check() routine is invoked to send recovery event for
4248 * all nodes that match RSCN payload. Otherwise, the lpfc_els_handle_rscn()
4249 * routine is invoked to handle the RSCN event.
4252 * 0 - Just sent the acc response
4253 * 1 - Sent the acc response and waited for name server completion
4256 lpfc_els_rcv_rscn(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
4257 struct lpfc_nodelist *ndlp)
4259 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4260 struct lpfc_hba *phba = vport->phba;
4261 struct lpfc_dmabuf *pcmd;
4262 uint32_t *lp, *datap;
4264 uint32_t payload_len, length, nportid, *cmd;
4266 int rscn_id = 0, hba_id = 0;
4269 icmd = &cmdiocb->iocb;
4270 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
4271 lp = (uint32_t *) pcmd->virt;
4273 payload_len = be32_to_cpu(*lp++ & ~ELS_CMD_MASK);
4274 payload_len -= sizeof(uint32_t); /* take off word 0 */
4276 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
4277 "0214 RSCN received Data: x%x x%x x%x x%x\n",
4278 vport->fc_flag, payload_len, *lp,
4279 vport->fc_rscn_id_cnt);
4281 /* Send an RSCN event to the management application */
4282 lpfc_send_rscn_event(vport, cmdiocb);
4284 for (i = 0; i < payload_len/sizeof(uint32_t); i++)
4285 fc_host_post_event(shost, fc_get_event_number(),
4286 FCH_EVT_RSCN, lp[i]);
4288 /* If we are about to begin discovery, just ACC the RSCN.
4289 * Discovery processing will satisfy it.
4291 if (vport->port_state <= LPFC_NS_QRY) {
4292 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
4293 "RCV RSCN ignore: did:x%x/ste:x%x flg:x%x",
4294 ndlp->nlp_DID, vport->port_state, ndlp->nlp_flag);
4296 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
4300 /* If this RSCN just contains NPortIDs for other vports on this HBA,
4301 * just ACC and ignore it.
4303 if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
4304 !(vport->cfg_peer_port_login)) {
4309 nportid = ((be32_to_cpu(nportid)) & Mask_DID);
4310 i -= sizeof(uint32_t);
4312 if (lpfc_find_vport_by_did(phba, nportid))
4315 if (rscn_id == hba_id) {
4316 /* ALL NPortIDs in RSCN are on HBA */
4317 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
4319 "Data: x%x x%x x%x x%x\n",
4320 vport->fc_flag, payload_len,
4321 *lp, vport->fc_rscn_id_cnt);
4322 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
4323 "RCV RSCN vport: did:x%x/ste:x%x flg:x%x",
4324 ndlp->nlp_DID, vport->port_state,
4327 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb,
4333 spin_lock_irq(shost->host_lock);
4334 if (vport->fc_rscn_flush) {
4335 /* Another thread is walking fc_rscn_id_list on this vport */
4336 vport->fc_flag |= FC_RSCN_DISCOVERY;
4337 spin_unlock_irq(shost->host_lock);
4339 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
4342 /* Indicate we are walking fc_rscn_id_list on this vport */
4343 vport->fc_rscn_flush = 1;
4344 spin_unlock_irq(shost->host_lock);
4345 /* Get the array count after successfully have the token */
4346 rscn_cnt = vport->fc_rscn_id_cnt;
4347 /* If we are already processing an RSCN, save the received
4348 * RSCN payload buffer, cmdiocb->context2 to process later.
4350 if (vport->fc_flag & (FC_RSCN_MODE | FC_NDISC_ACTIVE)) {
4351 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
4352 "RCV RSCN defer: did:x%x/ste:x%x flg:x%x",
4353 ndlp->nlp_DID, vport->port_state, ndlp->nlp_flag);
4355 spin_lock_irq(shost->host_lock);
4356 vport->fc_flag |= FC_RSCN_DEFERRED;
4357 if ((rscn_cnt < FC_MAX_HOLD_RSCN) &&
4358 !(vport->fc_flag & FC_RSCN_DISCOVERY)) {
4359 vport->fc_flag |= FC_RSCN_MODE;
4360 spin_unlock_irq(shost->host_lock);
4362 cmd = vport->fc_rscn_id_list[rscn_cnt-1]->virt;
4363 length = be32_to_cpu(*cmd & ~ELS_CMD_MASK);
4366 (payload_len + length <= LPFC_BPL_SIZE)) {
4367 *cmd &= ELS_CMD_MASK;
4368 *cmd |= cpu_to_be32(payload_len + length);
4369 memcpy(((uint8_t *)cmd) + length, lp,
4372 vport->fc_rscn_id_list[rscn_cnt] = pcmd;
4373 vport->fc_rscn_id_cnt++;
4374 /* If we zero, cmdiocb->context2, the calling
4375 * routine will not try to free it.
4377 cmdiocb->context2 = NULL;
4380 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
4381 "0235 Deferred RSCN "
4382 "Data: x%x x%x x%x\n",
4383 vport->fc_rscn_id_cnt, vport->fc_flag,
4386 vport->fc_flag |= FC_RSCN_DISCOVERY;
4387 spin_unlock_irq(shost->host_lock);
4388 /* ReDiscovery RSCN */
4389 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
4390 "0234 ReDiscovery RSCN "
4391 "Data: x%x x%x x%x\n",
4392 vport->fc_rscn_id_cnt, vport->fc_flag,
4395 /* Indicate we are done walking fc_rscn_id_list on this vport */
4396 vport->fc_rscn_flush = 0;
4398 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
4399 /* send RECOVERY event for ALL nodes that match RSCN payload */
4400 lpfc_rscn_recovery_check(vport);
4401 spin_lock_irq(shost->host_lock);
4402 vport->fc_flag &= ~FC_RSCN_DEFERRED;
4403 spin_unlock_irq(shost->host_lock);
4406 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
4407 "RCV RSCN: did:x%x/ste:x%x flg:x%x",
4408 ndlp->nlp_DID, vport->port_state, ndlp->nlp_flag);
4410 spin_lock_irq(shost->host_lock);
4411 vport->fc_flag |= FC_RSCN_MODE;
4412 spin_unlock_irq(shost->host_lock);
4413 vport->fc_rscn_id_list[vport->fc_rscn_id_cnt++] = pcmd;
4414 /* Indicate we are done walking fc_rscn_id_list on this vport */
4415 vport->fc_rscn_flush = 0;
4417 * If we zero, cmdiocb->context2, the calling routine will
4418 * not try to free it.
4420 cmdiocb->context2 = NULL;
4421 lpfc_set_disctmo(vport);
4423 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
4424 /* send RECOVERY event for ALL nodes that match RSCN payload */
4425 lpfc_rscn_recovery_check(vport);
4426 return lpfc_els_handle_rscn(vport);
4430 * lpfc_els_handle_rscn - Handle rscn for a vport
4431 * @vport: pointer to a host virtual N_Port data structure.
4433 * This routine handles the Registration State Configuration Notification
4434 * (RSCN) for a @vport. If login to NameServer does not exist, a new ndlp shall
4435 * be created and a Port Login (PLOGI) to the NameServer is issued. Otherwise,
4436 * if the ndlp to NameServer exists, a Common Transport (CT) command to the
4437 * NameServer shall be issued. If CT command to the NameServer fails to be
4438 * issued, the lpfc_els_flush_rscn() routine shall be invoked to clean up any
4439 * RSCN activities with the @vport.
4442 * 0 - Cleaned up rscn on the @vport
4443 * 1 - Wait for plogi to name server before proceed
4446 lpfc_els_handle_rscn(struct lpfc_vport *vport)
4448 struct lpfc_nodelist *ndlp;
4449 struct lpfc_hba *phba = vport->phba;
4451 /* Ignore RSCN if the port is being torn down. */
4452 if (vport->load_flag & FC_UNLOADING) {
4453 lpfc_els_flush_rscn(vport);
4457 /* Start timer for RSCN processing */
4458 lpfc_set_disctmo(vport);
4460 /* RSCN processed */
4461 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
4462 "0215 RSCN processed Data: x%x x%x x%x x%x\n",
4463 vport->fc_flag, 0, vport->fc_rscn_id_cnt,
4466 /* To process RSCN, first compare RSCN data with NameServer */
4467 vport->fc_ns_retry = 0;
4468 vport->num_disc_nodes = 0;
4470 ndlp = lpfc_findnode_did(vport, NameServer_DID);
4471 if (ndlp && NLP_CHK_NODE_ACT(ndlp)
4472 && ndlp->nlp_state == NLP_STE_UNMAPPED_NODE) {
4473 /* Good ndlp, issue CT Request to NameServer */
4474 if (lpfc_ns_cmd(vport, SLI_CTNS_GID_FT, 0, 0) == 0)
4475 /* Wait for NameServer query cmpl before we can
4479 /* If login to NameServer does not exist, issue one */
4480 /* Good status, issue PLOGI to NameServer */
4481 ndlp = lpfc_findnode_did(vport, NameServer_DID);
4482 if (ndlp && NLP_CHK_NODE_ACT(ndlp))
4483 /* Wait for NameServer login cmpl before we can
4488 ndlp = lpfc_enable_node(vport, ndlp,
4489 NLP_STE_PLOGI_ISSUE);
4491 lpfc_els_flush_rscn(vport);
4494 ndlp->nlp_prev_state = NLP_STE_UNUSED_NODE;
4496 ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL);
4498 lpfc_els_flush_rscn(vport);
4501 lpfc_nlp_init(vport, ndlp, NameServer_DID);
4502 ndlp->nlp_prev_state = ndlp->nlp_state;
4503 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
4505 ndlp->nlp_type |= NLP_FABRIC;
4506 lpfc_issue_els_plogi(vport, NameServer_DID, 0);
4507 /* Wait for NameServer login cmpl before we can
4513 lpfc_els_flush_rscn(vport);
4518 * lpfc_els_rcv_flogi - Process an unsolicited flogi iocb
4519 * @vport: pointer to a host virtual N_Port data structure.
4520 * @cmdiocb: pointer to lpfc command iocb data structure.
4521 * @ndlp: pointer to a node-list data structure.
4523 * This routine processes Fabric Login (FLOGI) IOCB received as an ELS
4524 * unsolicited event. An unsolicited FLOGI can be received in a point-to-
4525 * point topology. As an unsolicited FLOGI should not be received in a loop
4526 * mode, any unsolicited FLOGI received in loop mode shall be ignored. The
4527 * lpfc_check_sparm() routine is invoked to check the parameters in the
4528 * unsolicited FLOGI. If parameters validation failed, the routine
4529 * lpfc_els_rsp_reject() shall be called with reject reason code set to
4530 * LSEXP_SPARM_OPTIONS to reject the FLOGI. Otherwise, the Port WWN in the
4531 * FLOGI shall be compared with the Port WWN of the @vport to determine who
4532 * will initiate PLOGI. The higher lexicographical value party shall has
4533 * higher priority (as the winning port) and will initiate PLOGI and
4534 * communicate Port_IDs (Addresses) for both nodes in PLOGI. The result
4535 * of this will be marked in the @vport fc_flag field with FC_PT2PT_PLOGI
4536 * and then the lpfc_els_rsp_acc() routine is invoked to accept the FLOGI.
4539 * 0 - Successfully processed the unsolicited flogi
4540 * 1 - Failed to process the unsolicited flogi
4543 lpfc_els_rcv_flogi(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
4544 struct lpfc_nodelist *ndlp)
4546 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4547 struct lpfc_hba *phba = vport->phba;
4548 struct lpfc_dmabuf *pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
4549 uint32_t *lp = (uint32_t *) pcmd->virt;
4550 IOCB_t *icmd = &cmdiocb->iocb;
4551 struct serv_parm *sp;
4558 sp = (struct serv_parm *) lp;
4560 /* FLOGI received */
4562 lpfc_set_disctmo(vport);
4564 if (phba->fc_topology == TOPOLOGY_LOOP) {
4565 /* We should never receive a FLOGI in loop mode, ignore it */
4566 did = icmd->un.elsreq64.remoteID;
4568 /* An FLOGI ELS command <elsCmd> was received from DID <did> in
4570 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
4571 "0113 An FLOGI ELS command x%x was "
4572 "received from DID x%x in Loop Mode\n",
4579 if ((lpfc_check_sparm(vport, ndlp, sp, CLASS3, 1))) {
4580 /* For a FLOGI we accept, then if our portname is greater
4581 * then the remote portname we initiate Nport login.
4584 rc = memcmp(&vport->fc_portname, &sp->portName,
4585 sizeof(struct lpfc_name));
4588 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
4592 lpfc_linkdown(phba);
4593 lpfc_init_link(phba, mbox,
4595 phba->cfg_link_speed);
4596 mbox->u.mb.un.varInitLnk.lipsr_AL_PA = 0;
4597 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
4598 mbox->vport = vport;
4599 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
4600 lpfc_set_loopback_flag(phba);
4601 if (rc == MBX_NOT_FINISHED) {
4602 mempool_free(mbox, phba->mbox_mem_pool);
4605 } else if (rc > 0) { /* greater than */
4606 spin_lock_irq(shost->host_lock);
4607 vport->fc_flag |= FC_PT2PT_PLOGI;
4608 spin_unlock_irq(shost->host_lock);
4610 spin_lock_irq(shost->host_lock);
4611 vport->fc_flag |= FC_PT2PT;
4612 vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
4613 spin_unlock_irq(shost->host_lock);
4615 /* Reject this request because invalid parameters */
4616 stat.un.b.lsRjtRsvd0 = 0;
4617 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
4618 stat.un.b.lsRjtRsnCodeExp = LSEXP_SPARM_OPTIONS;
4619 stat.un.b.vendorUnique = 0;
4620 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
4626 lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb, ndlp, NULL);
4632 * lpfc_els_rcv_rnid - Process an unsolicited rnid iocb
4633 * @vport: pointer to a host virtual N_Port data structure.
4634 * @cmdiocb: pointer to lpfc command iocb data structure.
4635 * @ndlp: pointer to a node-list data structure.
4637 * This routine processes Request Node Identification Data (RNID) IOCB
4638 * received as an ELS unsolicited event. Only when the RNID specified format
4639 * 0x0 or 0xDF (Topology Discovery Specific Node Identification Data)
4640 * present, this routine will invoke the lpfc_els_rsp_rnid_acc() routine to
4641 * Accept (ACC) the RNID ELS command. All the other RNID formats are
4642 * rejected by invoking the lpfc_els_rsp_reject() routine.
4645 * 0 - Successfully processed rnid iocb (currently always return 0)
4648 lpfc_els_rcv_rnid(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
4649 struct lpfc_nodelist *ndlp)
4651 struct lpfc_dmabuf *pcmd;
4658 icmd = &cmdiocb->iocb;
4659 did = icmd->un.elsreq64.remoteID;
4660 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
4661 lp = (uint32_t *) pcmd->virt;
4668 switch (rn->Format) {
4670 case RNID_TOPOLOGY_DISC:
4672 lpfc_els_rsp_rnid_acc(vport, rn->Format, cmdiocb, ndlp);
4675 /* Reject this request because format not supported */
4676 stat.un.b.lsRjtRsvd0 = 0;
4677 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
4678 stat.un.b.lsRjtRsnCodeExp = LSEXP_CANT_GIVE_DATA;
4679 stat.un.b.vendorUnique = 0;
4680 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
4687 * lpfc_els_rcv_lirr - Process an unsolicited lirr iocb
4688 * @vport: pointer to a host virtual N_Port data structure.
4689 * @cmdiocb: pointer to lpfc command iocb data structure.
4690 * @ndlp: pointer to a node-list data structure.
4692 * This routine processes a Link Incident Report Registration(LIRR) IOCB
4693 * received as an ELS unsolicited event. Currently, this function just invokes
4694 * the lpfc_els_rsp_reject() routine to reject the LIRR IOCB unconditionally.
4697 * 0 - Successfully processed lirr iocb (currently always return 0)
4700 lpfc_els_rcv_lirr(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
4701 struct lpfc_nodelist *ndlp)
4705 /* For now, unconditionally reject this command */
4706 stat.un.b.lsRjtRsvd0 = 0;
4707 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
4708 stat.un.b.lsRjtRsnCodeExp = LSEXP_CANT_GIVE_DATA;
4709 stat.un.b.vendorUnique = 0;
4710 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
4715 * lpfc_els_rcv_rrq - Process an unsolicited rrq iocb
4716 * @vport: pointer to a host virtual N_Port data structure.
4717 * @cmdiocb: pointer to lpfc command iocb data structure.
4718 * @ndlp: pointer to a node-list data structure.
4720 * This routine processes a Reinstate Recovery Qualifier (RRQ) IOCB
4721 * received as an ELS unsolicited event. A request to RRQ shall only
4722 * be accepted if the Originator Nx_Port N_Port_ID or the Responder
4723 * Nx_Port N_Port_ID of the target Exchange is the same as the
4724 * N_Port_ID of the Nx_Port that makes the request. If the RRQ is
4725 * not accepted, an LS_RJT with reason code "Unable to perform
4726 * command request" and reason code explanation "Invalid Originator
4727 * S_ID" shall be returned. For now, we just unconditionally accept
4728 * RRQ from the target.
4731 lpfc_els_rcv_rrq(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
4732 struct lpfc_nodelist *ndlp)
4734 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
4738 * lpfc_els_rsp_rps_acc - Completion callbk func for MBX_READ_LNK_STAT mbox cmd
4739 * @phba: pointer to lpfc hba data structure.
4740 * @pmb: pointer to the driver internal queue element for mailbox command.
4742 * This routine is the completion callback function for the MBX_READ_LNK_STAT
4743 * mailbox command. This callback function is to actually send the Accept
4744 * (ACC) response to a Read Port Status (RPS) unsolicited IOCB event. It
4745 * collects the link statistics from the completion of the MBX_READ_LNK_STAT
4746 * mailbox command, constructs the RPS response with the link statistics
4747 * collected, and then invokes the lpfc_sli_issue_iocb() routine to send ACC
4748 * response to the RPS.
4750 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
4751 * will be incremented by 1 for holding the ndlp and the reference to ndlp
4752 * will be stored into the context1 field of the IOCB for the completion
4753 * callback function to the RPS Accept Response ELS IOCB command.
4757 lpfc_els_rsp_rps_acc(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
4763 struct lpfc_iocbq *elsiocb;
4764 struct lpfc_nodelist *ndlp;
4765 uint16_t xri, status;
4770 ndlp = (struct lpfc_nodelist *) pmb->context2;
4771 xri = (uint16_t) ((unsigned long)(pmb->context1));
4772 pmb->context1 = NULL;
4773 pmb->context2 = NULL;
4775 if (mb->mbxStatus) {
4776 mempool_free(pmb, phba->mbox_mem_pool);
4780 cmdsize = sizeof(RPS_RSP) + sizeof(uint32_t);
4781 mempool_free(pmb, phba->mbox_mem_pool);
4782 elsiocb = lpfc_prep_els_iocb(phba->pport, 0, cmdsize,
4783 lpfc_max_els_tries, ndlp,
4784 ndlp->nlp_DID, ELS_CMD_ACC);
4786 /* Decrement the ndlp reference count from previous mbox command */
4792 icmd = &elsiocb->iocb;
4793 icmd->ulpContext = xri;
4795 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
4796 *((uint32_t *) (pcmd)) = ELS_CMD_ACC;
4797 pcmd += sizeof(uint32_t); /* Skip past command */
4798 rps_rsp = (RPS_RSP *)pcmd;
4800 if (phba->fc_topology != TOPOLOGY_LOOP)
4804 if (phba->pport->fc_flag & FC_FABRIC)
4808 rps_rsp->portStatus = cpu_to_be16(status);
4809 rps_rsp->linkFailureCnt = cpu_to_be32(mb->un.varRdLnk.linkFailureCnt);
4810 rps_rsp->lossSyncCnt = cpu_to_be32(mb->un.varRdLnk.lossSyncCnt);
4811 rps_rsp->lossSignalCnt = cpu_to_be32(mb->un.varRdLnk.lossSignalCnt);
4812 rps_rsp->primSeqErrCnt = cpu_to_be32(mb->un.varRdLnk.primSeqErrCnt);
4813 rps_rsp->invalidXmitWord = cpu_to_be32(mb->un.varRdLnk.invalidXmitWord);
4814 rps_rsp->crcCnt = cpu_to_be32(mb->un.varRdLnk.crcCnt);
4815 /* Xmit ELS RPS ACC response tag <ulpIoTag> */
4816 lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_ELS,
4817 "0118 Xmit ELS RPS ACC response tag x%x xri x%x, "
4818 "did x%x, nlp_flag x%x, nlp_state x%x, rpi x%x\n",
4819 elsiocb->iotag, elsiocb->iocb.ulpContext,
4820 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
4822 elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp;
4823 phba->fc_stat.elsXmitACC++;
4824 if (lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0) == IOCB_ERROR)
4825 lpfc_els_free_iocb(phba, elsiocb);
4830 * lpfc_els_rcv_rps - Process an unsolicited rps iocb
4831 * @vport: pointer to a host virtual N_Port data structure.
4832 * @cmdiocb: pointer to lpfc command iocb data structure.
4833 * @ndlp: pointer to a node-list data structure.
4835 * This routine processes Read Port Status (RPS) IOCB received as an
4836 * ELS unsolicited event. It first checks the remote port state. If the
4837 * remote port is not in NLP_STE_UNMAPPED_NODE state or NLP_STE_MAPPED_NODE
4838 * state, it invokes the lpfc_els_rsp_reject() routine to send the reject
4839 * response. Otherwise, it issue the MBX_READ_LNK_STAT mailbox command
4840 * for reading the HBA link statistics. It is for the callback function,
4841 * lpfc_els_rsp_rps_acc(), set to the MBX_READ_LNK_STAT mailbox command
4842 * to actually sending out RPS Accept (ACC) response.
4845 * 0 - Successfully processed rps iocb (currently always return 0)
4848 lpfc_els_rcv_rps(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
4849 struct lpfc_nodelist *ndlp)
4851 struct lpfc_hba *phba = vport->phba;
4855 struct lpfc_dmabuf *pcmd;
4859 if ((ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) &&
4860 (ndlp->nlp_state != NLP_STE_MAPPED_NODE))
4861 /* reject the unsolicited RPS request and done with it */
4864 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
4865 lp = (uint32_t *) pcmd->virt;
4866 flag = (be32_to_cpu(*lp++) & 0xf);
4870 ((flag == 1) && (be32_to_cpu(rps->un.portNum) == 0)) ||
4871 ((flag == 2) && (memcmp(&rps->un.portName, &vport->fc_portname,
4872 sizeof(struct lpfc_name)) == 0))) {
4874 printk("Fix me....\n");
4876 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_ATOMIC);
4878 lpfc_read_lnk_stat(phba, mbox);
4880 (void *)((unsigned long) cmdiocb->iocb.ulpContext);
4881 mbox->context2 = lpfc_nlp_get(ndlp);
4882 mbox->vport = vport;
4883 mbox->mbox_cmpl = lpfc_els_rsp_rps_acc;
4884 if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT)
4885 != MBX_NOT_FINISHED)
4886 /* Mbox completion will send ELS Response */
4888 /* Decrement reference count used for the failed mbox
4892 mempool_free(mbox, phba->mbox_mem_pool);
4897 /* issue rejection response */
4898 stat.un.b.lsRjtRsvd0 = 0;
4899 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
4900 stat.un.b.lsRjtRsnCodeExp = LSEXP_CANT_GIVE_DATA;
4901 stat.un.b.vendorUnique = 0;
4902 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
4907 * lpfc_els_rsp_rpl_acc - Issue an accept rpl els command
4908 * @vport: pointer to a host virtual N_Port data structure.
4909 * @cmdsize: size of the ELS command.
4910 * @oldiocb: pointer to the original lpfc command iocb data structure.
4911 * @ndlp: pointer to a node-list data structure.
4913 * This routine issuees an Accept (ACC) Read Port List (RPL) ELS command.
4914 * It is to be called by the lpfc_els_rcv_rpl() routine to accept the RPL.
4916 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
4917 * will be incremented by 1 for holding the ndlp and the reference to ndlp
4918 * will be stored into the context1 field of the IOCB for the completion
4919 * callback function to the RPL Accept Response ELS command.
4922 * 0 - Successfully issued ACC RPL ELS command
4923 * 1 - Failed to issue ACC RPL ELS command
4926 lpfc_els_rsp_rpl_acc(struct lpfc_vport *vport, uint16_t cmdsize,
4927 struct lpfc_iocbq *oldiocb, struct lpfc_nodelist *ndlp)
4929 struct lpfc_hba *phba = vport->phba;
4930 IOCB_t *icmd, *oldcmd;
4932 struct lpfc_iocbq *elsiocb;
4935 elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp,
4936 ndlp->nlp_DID, ELS_CMD_ACC);
4941 icmd = &elsiocb->iocb;
4942 oldcmd = &oldiocb->iocb;
4943 icmd->ulpContext = oldcmd->ulpContext; /* Xri */
4945 pcmd = (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
4946 *((uint32_t *) (pcmd)) = ELS_CMD_ACC;
4947 pcmd += sizeof(uint16_t);
4948 *((uint16_t *)(pcmd)) = be16_to_cpu(cmdsize);
4949 pcmd += sizeof(uint16_t);
4951 /* Setup the RPL ACC payload */
4952 rpl_rsp.listLen = be32_to_cpu(1);
4954 rpl_rsp.port_num_blk.portNum = 0;
4955 rpl_rsp.port_num_blk.portID = be32_to_cpu(vport->fc_myDID);
4956 memcpy(&rpl_rsp.port_num_blk.portName, &vport->fc_portname,
4957 sizeof(struct lpfc_name));
4958 memcpy(pcmd, &rpl_rsp, cmdsize - sizeof(uint32_t));
4959 /* Xmit ELS RPL ACC response tag <ulpIoTag> */
4960 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
4961 "0120 Xmit ELS RPL ACC response tag x%x "
4962 "xri x%x, did x%x, nlp_flag x%x, nlp_state x%x, "
4964 elsiocb->iotag, elsiocb->iocb.ulpContext,
4965 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
4967 elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp;
4968 phba->fc_stat.elsXmitACC++;
4969 if (lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0) ==
4971 lpfc_els_free_iocb(phba, elsiocb);
4978 * lpfc_els_rcv_rpl - Process an unsolicited rpl iocb
4979 * @vport: pointer to a host virtual N_Port data structure.
4980 * @cmdiocb: pointer to lpfc command iocb data structure.
4981 * @ndlp: pointer to a node-list data structure.
4983 * This routine processes Read Port List (RPL) IOCB received as an ELS
4984 * unsolicited event. It first checks the remote port state. If the remote
4985 * port is not in NLP_STE_UNMAPPED_NODE and NLP_STE_MAPPED_NODE states, it
4986 * invokes the lpfc_els_rsp_reject() routine to send reject response.
4987 * Otherwise, this routine then invokes the lpfc_els_rsp_rpl_acc() routine
4988 * to accept the RPL.
4991 * 0 - Successfully processed rpl iocb (currently always return 0)
4994 lpfc_els_rcv_rpl(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
4995 struct lpfc_nodelist *ndlp)
4997 struct lpfc_dmabuf *pcmd;
5004 if ((ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) &&
5005 (ndlp->nlp_state != NLP_STE_MAPPED_NODE)) {
5006 /* issue rejection response */
5007 stat.un.b.lsRjtRsvd0 = 0;
5008 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
5009 stat.un.b.lsRjtRsnCodeExp = LSEXP_CANT_GIVE_DATA;
5010 stat.un.b.vendorUnique = 0;
5011 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
5013 /* rejected the unsolicited RPL request and done with it */
5017 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
5018 lp = (uint32_t *) pcmd->virt;
5019 rpl = (RPL *) (lp + 1);
5021 maxsize = be32_to_cpu(rpl->maxsize);
5023 /* We support only one port */
5024 if ((rpl->index == 0) &&
5026 ((maxsize * sizeof(uint32_t)) >= sizeof(RPL_RSP)))) {
5027 cmdsize = sizeof(uint32_t) + sizeof(RPL_RSP);
5029 cmdsize = sizeof(uint32_t) + maxsize * sizeof(uint32_t);
5031 lpfc_els_rsp_rpl_acc(vport, cmdsize, cmdiocb, ndlp);
5037 * lpfc_els_rcv_farp - Process an unsolicited farp request els command
5038 * @vport: pointer to a virtual N_Port data structure.
5039 * @cmdiocb: pointer to lpfc command iocb data structure.
5040 * @ndlp: pointer to a node-list data structure.
5042 * This routine processes Fibre Channel Address Resolution Protocol
5043 * (FARP) Request IOCB received as an ELS unsolicited event. Currently,
5044 * the lpfc driver only supports matching on WWPN or WWNN for FARP. As such,
5045 * FARP_MATCH_PORT flag and FARP_MATCH_NODE flag are checked against the
5046 * Match Flag in the FARP request IOCB: if FARP_MATCH_PORT flag is set, the
5047 * remote PortName is compared against the FC PortName stored in the @vport
5048 * data structure; if FARP_MATCH_NODE flag is set, the remote NodeName is
5049 * compared against the FC NodeName stored in the @vport data structure.
5050 * If any of these matches and the FARP_REQUEST_FARPR flag is set in the
5051 * FARP request IOCB Response Flag, the lpfc_issue_els_farpr() routine is
5052 * invoked to send out FARP Response to the remote node. Before sending the
5053 * FARP Response, however, the FARP_REQUEST_PLOGI flag is check in the FARP
5054 * request IOCB Response Flag and, if it is set, the lpfc_issue_els_plogi()
5055 * routine is invoked to log into the remote port first.
5058 * 0 - Either the FARP Match Mode not supported or successfully processed
5061 lpfc_els_rcv_farp(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
5062 struct lpfc_nodelist *ndlp)
5064 struct lpfc_dmabuf *pcmd;
5068 uint32_t cmd, cnt, did;
5070 icmd = &cmdiocb->iocb;
5071 did = icmd->un.elsreq64.remoteID;
5072 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
5073 lp = (uint32_t *) pcmd->virt;
5077 /* FARP-REQ received from DID <did> */
5078 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
5079 "0601 FARP-REQ received from DID x%x\n", did);
5080 /* We will only support match on WWPN or WWNN */
5081 if (fp->Mflags & ~(FARP_MATCH_NODE | FARP_MATCH_PORT)) {
5086 /* If this FARP command is searching for my portname */
5087 if (fp->Mflags & FARP_MATCH_PORT) {
5088 if (memcmp(&fp->RportName, &vport->fc_portname,
5089 sizeof(struct lpfc_name)) == 0)
5093 /* If this FARP command is searching for my nodename */
5094 if (fp->Mflags & FARP_MATCH_NODE) {
5095 if (memcmp(&fp->RnodeName, &vport->fc_nodename,
5096 sizeof(struct lpfc_name)) == 0)
5101 if ((ndlp->nlp_state == NLP_STE_UNMAPPED_NODE) ||
5102 (ndlp->nlp_state == NLP_STE_MAPPED_NODE)) {
5103 /* Log back into the node before sending the FARP. */
5104 if (fp->Rflags & FARP_REQUEST_PLOGI) {
5105 ndlp->nlp_prev_state = ndlp->nlp_state;
5106 lpfc_nlp_set_state(vport, ndlp,
5107 NLP_STE_PLOGI_ISSUE);
5108 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
5111 /* Send a FARP response to that node */
5112 if (fp->Rflags & FARP_REQUEST_FARPR)
5113 lpfc_issue_els_farpr(vport, did, 0);
5120 * lpfc_els_rcv_farpr - Process an unsolicited farp response iocb
5121 * @vport: pointer to a host virtual N_Port data structure.
5122 * @cmdiocb: pointer to lpfc command iocb data structure.
5123 * @ndlp: pointer to a node-list data structure.
5125 * This routine processes Fibre Channel Address Resolution Protocol
5126 * Response (FARPR) IOCB received as an ELS unsolicited event. It simply
5127 * invokes the lpfc_els_rsp_acc() routine to the remote node to accept
5128 * the FARP response request.
5131 * 0 - Successfully processed FARPR IOCB (currently always return 0)
5134 lpfc_els_rcv_farpr(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
5135 struct lpfc_nodelist *ndlp)
5137 struct lpfc_dmabuf *pcmd;
5142 icmd = &cmdiocb->iocb;
5143 did = icmd->un.elsreq64.remoteID;
5144 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
5145 lp = (uint32_t *) pcmd->virt;
5148 /* FARP-RSP received from DID <did> */
5149 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
5150 "0600 FARP-RSP received from DID x%x\n", did);
5151 /* ACCEPT the Farp resp request */
5152 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
5158 * lpfc_els_rcv_fan - Process an unsolicited fan iocb command
5159 * @vport: pointer to a host virtual N_Port data structure.
5160 * @cmdiocb: pointer to lpfc command iocb data structure.
5161 * @fan_ndlp: pointer to a node-list data structure.
5163 * This routine processes a Fabric Address Notification (FAN) IOCB
5164 * command received as an ELS unsolicited event. The FAN ELS command will
5165 * only be processed on a physical port (i.e., the @vport represents the
5166 * physical port). The fabric NodeName and PortName from the FAN IOCB are
5167 * compared against those in the phba data structure. If any of those is
5168 * different, the lpfc_initial_flogi() routine is invoked to initialize
5169 * Fabric Login (FLOGI) to the fabric to start the discover over. Otherwise,
5170 * if both of those are identical, the lpfc_issue_fabric_reglogin() routine
5171 * is invoked to register login to the fabric.
5174 * 0 - Successfully processed fan iocb (currently always return 0).
5177 lpfc_els_rcv_fan(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
5178 struct lpfc_nodelist *fan_ndlp)
5180 struct lpfc_hba *phba = vport->phba;
5184 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, "0265 FAN received\n");
5185 lp = (uint32_t *)((struct lpfc_dmabuf *)cmdiocb->context2)->virt;
5187 /* FAN received; Fan does not have a reply sequence */
5188 if ((vport == phba->pport) &&
5189 (vport->port_state == LPFC_LOCAL_CFG_LINK)) {
5190 if ((memcmp(&phba->fc_fabparam.nodeName, &fp->FnodeName,
5191 sizeof(struct lpfc_name))) ||
5192 (memcmp(&phba->fc_fabparam.portName, &fp->FportName,
5193 sizeof(struct lpfc_name)))) {
5194 /* This port has switched fabrics. FLOGI is required */
5195 lpfc_initial_flogi(vport);
5197 /* FAN verified - skip FLOGI */
5198 vport->fc_myDID = vport->fc_prevDID;
5199 if (phba->sli_rev < LPFC_SLI_REV4)
5200 lpfc_issue_fabric_reglogin(vport);
5202 lpfc_issue_reg_vfi(vport);
5209 * lpfc_els_timeout - Handler funciton to the els timer
5210 * @ptr: holder for the timer function associated data.
5212 * This routine is invoked by the ELS timer after timeout. It posts the ELS
5213 * timer timeout event by setting the WORKER_ELS_TMO bit to the work port
5214 * event bitmap and then invokes the lpfc_worker_wake_up() routine to wake
5215 * up the worker thread. It is for the worker thread to invoke the routine
5216 * lpfc_els_timeout_handler() to work on the posted event WORKER_ELS_TMO.
5219 lpfc_els_timeout(unsigned long ptr)
5221 struct lpfc_vport *vport = (struct lpfc_vport *) ptr;
5222 struct lpfc_hba *phba = vport->phba;
5223 uint32_t tmo_posted;
5224 unsigned long iflag;
5226 spin_lock_irqsave(&vport->work_port_lock, iflag);
5227 tmo_posted = vport->work_port_events & WORKER_ELS_TMO;
5229 vport->work_port_events |= WORKER_ELS_TMO;
5230 spin_unlock_irqrestore(&vport->work_port_lock, iflag);
5233 lpfc_worker_wake_up(phba);
5239 * lpfc_els_timeout_handler - Process an els timeout event
5240 * @vport: pointer to a virtual N_Port data structure.
5242 * This routine is the actual handler function that processes an ELS timeout
5243 * event. It walks the ELS ring to get and abort all the IOCBs (except the
5244 * ABORT/CLOSE/FARP/FARPR/FDISC), which are associated with the @vport by
5245 * invoking the lpfc_sli_issue_abort_iotag() routine.
5248 lpfc_els_timeout_handler(struct lpfc_vport *vport)
5250 struct lpfc_hba *phba = vport->phba;
5251 struct lpfc_sli_ring *pring;
5252 struct lpfc_iocbq *tmp_iocb, *piocb;
5254 struct lpfc_dmabuf *pcmd;
5255 uint32_t els_command = 0;
5257 uint32_t remote_ID = 0xffffffff;
5258 LIST_HEAD(txcmplq_completions);
5259 LIST_HEAD(abort_list);
5262 timeout = (uint32_t)(phba->fc_ratov << 1);
5264 pring = &phba->sli.ring[LPFC_ELS_RING];
5266 spin_lock_irq(&phba->hbalock);
5267 list_splice_init(&pring->txcmplq, &txcmplq_completions);
5268 spin_unlock_irq(&phba->hbalock);
5270 list_for_each_entry_safe(piocb, tmp_iocb, &txcmplq_completions, list) {
5273 if ((piocb->iocb_flag & LPFC_IO_LIBDFC) != 0 ||
5274 piocb->iocb.ulpCommand == CMD_ABORT_XRI_CN ||
5275 piocb->iocb.ulpCommand == CMD_CLOSE_XRI_CN)
5278 if (piocb->vport != vport)
5281 pcmd = (struct lpfc_dmabuf *) piocb->context2;
5283 els_command = *(uint32_t *) (pcmd->virt);
5285 if (els_command == ELS_CMD_FARP ||
5286 els_command == ELS_CMD_FARPR ||
5287 els_command == ELS_CMD_FDISC)
5290 if (piocb->drvrTimeout > 0) {
5291 if (piocb->drvrTimeout >= timeout)
5292 piocb->drvrTimeout -= timeout;
5294 piocb->drvrTimeout = 0;
5298 remote_ID = 0xffffffff;
5299 if (cmd->ulpCommand != CMD_GEN_REQUEST64_CR)
5300 remote_ID = cmd->un.elsreq64.remoteID;
5302 struct lpfc_nodelist *ndlp;
5303 ndlp = __lpfc_findnode_rpi(vport, cmd->ulpContext);
5304 if (ndlp && NLP_CHK_NODE_ACT(ndlp))
5305 remote_ID = ndlp->nlp_DID;
5307 list_add_tail(&piocb->dlist, &abort_list);
5309 spin_lock_irq(&phba->hbalock);
5310 list_splice(&txcmplq_completions, &pring->txcmplq);
5311 spin_unlock_irq(&phba->hbalock);
5313 list_for_each_entry_safe(piocb, tmp_iocb, &abort_list, dlist) {
5314 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
5315 "0127 ELS timeout Data: x%x x%x x%x "
5316 "x%x\n", els_command,
5317 remote_ID, cmd->ulpCommand, cmd->ulpIoTag);
5318 spin_lock_irq(&phba->hbalock);
5319 list_del_init(&piocb->dlist);
5320 lpfc_sli_issue_abort_iotag(phba, pring, piocb);
5321 spin_unlock_irq(&phba->hbalock);
5324 if (phba->sli.ring[LPFC_ELS_RING].txcmplq_cnt)
5325 mod_timer(&vport->els_tmofunc, jiffies + HZ * timeout);
5329 * lpfc_els_flush_cmd - Clean up the outstanding els commands to a vport
5330 * @vport: pointer to a host virtual N_Port data structure.
5332 * This routine is used to clean up all the outstanding ELS commands on a
5333 * @vport. It first aborts the @vport by invoking lpfc_fabric_abort_vport()
5334 * routine. After that, it walks the ELS transmit queue to remove all the
5335 * IOCBs with the @vport other than the QUE_RING and ABORT/CLOSE IOCBs. For
5336 * the IOCBs with a non-NULL completion callback function, the callback
5337 * function will be invoked with the status set to IOSTAT_LOCAL_REJECT and
5338 * un.ulpWord[4] set to IOERR_SLI_ABORTED. For IOCBs with a NULL completion
5339 * callback function, the IOCB will simply be released. Finally, it walks
5340 * the ELS transmit completion queue to issue an abort IOCB to any transmit
5341 * completion queue IOCB that is associated with the @vport and is not
5342 * an IOCB from libdfc (i.e., the management plane IOCBs that are not
5343 * part of the discovery state machine) out to HBA by invoking the
5344 * lpfc_sli_issue_abort_iotag() routine. Note that this function issues the
5345 * abort IOCB to any transmit completion queueed IOCB, it does not guarantee
5346 * the IOCBs are aborted when this function returns.
5349 lpfc_els_flush_cmd(struct lpfc_vport *vport)
5351 LIST_HEAD(completions);
5352 struct lpfc_hba *phba = vport->phba;
5353 struct lpfc_sli_ring *pring = &phba->sli.ring[LPFC_ELS_RING];
5354 struct lpfc_iocbq *tmp_iocb, *piocb;
5357 lpfc_fabric_abort_vport(vport);
5359 spin_lock_irq(&phba->hbalock);
5360 list_for_each_entry_safe(piocb, tmp_iocb, &pring->txq, list) {
5363 if (piocb->iocb_flag & LPFC_IO_LIBDFC) {
5367 /* Do not flush out the QUE_RING and ABORT/CLOSE iocbs */
5368 if (cmd->ulpCommand == CMD_QUE_RING_BUF_CN ||
5369 cmd->ulpCommand == CMD_QUE_RING_BUF64_CN ||
5370 cmd->ulpCommand == CMD_CLOSE_XRI_CN ||
5371 cmd->ulpCommand == CMD_ABORT_XRI_CN)
5374 if (piocb->vport != vport)
5377 list_move_tail(&piocb->list, &completions);
5381 list_for_each_entry_safe(piocb, tmp_iocb, &pring->txcmplq, list) {
5382 if (piocb->iocb_flag & LPFC_IO_LIBDFC) {
5386 if (piocb->vport != vport)
5389 lpfc_sli_issue_abort_iotag(phba, pring, piocb);
5391 spin_unlock_irq(&phba->hbalock);
5393 /* Cancell all the IOCBs from the completions list */
5394 lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
5401 * lpfc_els_flush_all_cmd - Clean up all the outstanding els commands to a HBA
5402 * @phba: pointer to lpfc hba data structure.
5404 * This routine is used to clean up all the outstanding ELS commands on a
5405 * @phba. It first aborts the @phba by invoking the lpfc_fabric_abort_hba()
5406 * routine. After that, it walks the ELS transmit queue to remove all the
5407 * IOCBs to the @phba other than the QUE_RING and ABORT/CLOSE IOCBs. For
5408 * the IOCBs with the completion callback function associated, the callback
5409 * function will be invoked with the status set to IOSTAT_LOCAL_REJECT and
5410 * un.ulpWord[4] set to IOERR_SLI_ABORTED. For IOCBs without the completion
5411 * callback function associated, the IOCB will simply be released. Finally,
5412 * it walks the ELS transmit completion queue to issue an abort IOCB to any
5413 * transmit completion queue IOCB that is not an IOCB from libdfc (i.e., the
5414 * management plane IOCBs that are not part of the discovery state machine)
5415 * out to HBA by invoking the lpfc_sli_issue_abort_iotag() routine.
5418 lpfc_els_flush_all_cmd(struct lpfc_hba *phba)
5420 LIST_HEAD(completions);
5421 struct lpfc_sli_ring *pring = &phba->sli.ring[LPFC_ELS_RING];
5422 struct lpfc_iocbq *tmp_iocb, *piocb;
5425 lpfc_fabric_abort_hba(phba);
5426 spin_lock_irq(&phba->hbalock);
5427 list_for_each_entry_safe(piocb, tmp_iocb, &pring->txq, list) {
5429 if (piocb->iocb_flag & LPFC_IO_LIBDFC)
5431 /* Do not flush out the QUE_RING and ABORT/CLOSE iocbs */
5432 if (cmd->ulpCommand == CMD_QUE_RING_BUF_CN ||
5433 cmd->ulpCommand == CMD_QUE_RING_BUF64_CN ||
5434 cmd->ulpCommand == CMD_CLOSE_XRI_CN ||
5435 cmd->ulpCommand == CMD_ABORT_XRI_CN)
5437 list_move_tail(&piocb->list, &completions);
5440 list_for_each_entry_safe(piocb, tmp_iocb, &pring->txcmplq, list) {
5441 if (piocb->iocb_flag & LPFC_IO_LIBDFC)
5443 lpfc_sli_issue_abort_iotag(phba, pring, piocb);
5445 spin_unlock_irq(&phba->hbalock);
5447 /* Cancel all the IOCBs from the completions list */
5448 lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
5455 * lpfc_send_els_failure_event - Posts an ELS command failure event
5456 * @phba: Pointer to hba context object.
5457 * @cmdiocbp: Pointer to command iocb which reported error.
5458 * @rspiocbp: Pointer to response iocb which reported error.
5460 * This function sends an event when there is an ELS command
5464 lpfc_send_els_failure_event(struct lpfc_hba *phba,
5465 struct lpfc_iocbq *cmdiocbp,
5466 struct lpfc_iocbq *rspiocbp)
5468 struct lpfc_vport *vport = cmdiocbp->vport;
5469 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
5470 struct lpfc_lsrjt_event lsrjt_event;
5471 struct lpfc_fabric_event_header fabric_event;
5473 struct lpfc_nodelist *ndlp;
5476 ndlp = cmdiocbp->context1;
5477 if (!ndlp || !NLP_CHK_NODE_ACT(ndlp))
5480 if (rspiocbp->iocb.ulpStatus == IOSTAT_LS_RJT) {
5481 lsrjt_event.header.event_type = FC_REG_ELS_EVENT;
5482 lsrjt_event.header.subcategory = LPFC_EVENT_LSRJT_RCV;
5483 memcpy(lsrjt_event.header.wwpn, &ndlp->nlp_portname,
5484 sizeof(struct lpfc_name));
5485 memcpy(lsrjt_event.header.wwnn, &ndlp->nlp_nodename,
5486 sizeof(struct lpfc_name));
5487 pcmd = (uint32_t *) (((struct lpfc_dmabuf *)
5488 cmdiocbp->context2)->virt);
5489 lsrjt_event.command = (pcmd != NULL) ? *pcmd : 0;
5490 stat.un.lsRjtError = be32_to_cpu(rspiocbp->iocb.un.ulpWord[4]);
5491 lsrjt_event.reason_code = stat.un.b.lsRjtRsnCode;
5492 lsrjt_event.explanation = stat.un.b.lsRjtRsnCodeExp;
5493 fc_host_post_vendor_event(shost,
5494 fc_get_event_number(),
5495 sizeof(lsrjt_event),
5496 (char *)&lsrjt_event,
5500 if ((rspiocbp->iocb.ulpStatus == IOSTAT_NPORT_BSY) ||
5501 (rspiocbp->iocb.ulpStatus == IOSTAT_FABRIC_BSY)) {
5502 fabric_event.event_type = FC_REG_FABRIC_EVENT;
5503 if (rspiocbp->iocb.ulpStatus == IOSTAT_NPORT_BSY)
5504 fabric_event.subcategory = LPFC_EVENT_PORT_BUSY;
5506 fabric_event.subcategory = LPFC_EVENT_FABRIC_BUSY;
5507 memcpy(fabric_event.wwpn, &ndlp->nlp_portname,
5508 sizeof(struct lpfc_name));
5509 memcpy(fabric_event.wwnn, &ndlp->nlp_nodename,
5510 sizeof(struct lpfc_name));
5511 fc_host_post_vendor_event(shost,
5512 fc_get_event_number(),
5513 sizeof(fabric_event),
5514 (char *)&fabric_event,
5522 * lpfc_send_els_event - Posts unsolicited els event
5523 * @vport: Pointer to vport object.
5524 * @ndlp: Pointer FC node object.
5525 * @cmd: ELS command code.
5527 * This function posts an event when there is an incoming
5528 * unsolicited ELS command.
5531 lpfc_send_els_event(struct lpfc_vport *vport,
5532 struct lpfc_nodelist *ndlp,
5535 struct lpfc_els_event_header *els_data = NULL;
5536 struct lpfc_logo_event *logo_data = NULL;
5537 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
5539 if (*payload == ELS_CMD_LOGO) {
5540 logo_data = kmalloc(sizeof(struct lpfc_logo_event), GFP_KERNEL);
5542 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
5543 "0148 Failed to allocate memory "
5544 "for LOGO event\n");
5547 els_data = &logo_data->header;
5549 els_data = kmalloc(sizeof(struct lpfc_els_event_header),
5552 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
5553 "0149 Failed to allocate memory "
5558 els_data->event_type = FC_REG_ELS_EVENT;
5561 els_data->subcategory = LPFC_EVENT_PLOGI_RCV;
5564 els_data->subcategory = LPFC_EVENT_PRLO_RCV;
5567 els_data->subcategory = LPFC_EVENT_ADISC_RCV;
5570 els_data->subcategory = LPFC_EVENT_LOGO_RCV;
5571 /* Copy the WWPN in the LOGO payload */
5572 memcpy(logo_data->logo_wwpn, &payload[2],
5573 sizeof(struct lpfc_name));
5579 memcpy(els_data->wwpn, &ndlp->nlp_portname, sizeof(struct lpfc_name));
5580 memcpy(els_data->wwnn, &ndlp->nlp_nodename, sizeof(struct lpfc_name));
5581 if (*payload == ELS_CMD_LOGO) {
5582 fc_host_post_vendor_event(shost,
5583 fc_get_event_number(),
5584 sizeof(struct lpfc_logo_event),
5589 fc_host_post_vendor_event(shost,
5590 fc_get_event_number(),
5591 sizeof(struct lpfc_els_event_header),
5602 * lpfc_els_unsol_buffer - Process an unsolicited event data buffer
5603 * @phba: pointer to lpfc hba data structure.
5604 * @pring: pointer to a SLI ring.
5605 * @vport: pointer to a host virtual N_Port data structure.
5606 * @elsiocb: pointer to lpfc els command iocb data structure.
5608 * This routine is used for processing the IOCB associated with a unsolicited
5609 * event. It first determines whether there is an existing ndlp that matches
5610 * the DID from the unsolicited IOCB. If not, it will create a new one with
5611 * the DID from the unsolicited IOCB. The ELS command from the unsolicited
5612 * IOCB is then used to invoke the proper routine and to set up proper state
5613 * of the discovery state machine.
5616 lpfc_els_unsol_buffer(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
5617 struct lpfc_vport *vport, struct lpfc_iocbq *elsiocb)
5619 struct Scsi_Host *shost;
5620 struct lpfc_nodelist *ndlp;
5623 uint32_t cmd, did, newnode, rjt_err = 0;
5624 IOCB_t *icmd = &elsiocb->iocb;
5626 if (!vport || !(elsiocb->context2))
5630 payload = ((struct lpfc_dmabuf *)elsiocb->context2)->virt;
5632 if ((phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) == 0)
5633 lpfc_post_buffer(phba, pring, 1);
5635 did = icmd->un.rcvels.remoteID;
5636 if (icmd->ulpStatus) {
5637 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
5638 "RCV Unsol ELS: status:x%x/x%x did:x%x",
5639 icmd->ulpStatus, icmd->un.ulpWord[4], did);
5643 /* Check to see if link went down during discovery */
5644 if (lpfc_els_chk_latt(vport))
5647 /* Ignore traffic received during vport shutdown. */
5648 if (vport->load_flag & FC_UNLOADING)
5651 ndlp = lpfc_findnode_did(vport, did);
5653 /* Cannot find existing Fabric ndlp, so allocate a new one */
5654 ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL);
5658 lpfc_nlp_init(vport, ndlp, did);
5659 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
5661 if ((did & Fabric_DID_MASK) == Fabric_DID_MASK)
5662 ndlp->nlp_type |= NLP_FABRIC;
5663 } else if (!NLP_CHK_NODE_ACT(ndlp)) {
5664 ndlp = lpfc_enable_node(vport, ndlp,
5665 NLP_STE_UNUSED_NODE);
5668 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
5670 if ((did & Fabric_DID_MASK) == Fabric_DID_MASK)
5671 ndlp->nlp_type |= NLP_FABRIC;
5672 } else if (ndlp->nlp_state == NLP_STE_UNUSED_NODE) {
5673 /* This is similar to the new node path */
5674 ndlp = lpfc_nlp_get(ndlp);
5677 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
5681 phba->fc_stat.elsRcvFrame++;
5683 elsiocb->context1 = lpfc_nlp_get(ndlp);
5684 elsiocb->vport = vport;
5686 if ((cmd & ELS_CMD_MASK) == ELS_CMD_RSCN) {
5687 cmd &= ELS_CMD_MASK;
5689 /* ELS command <elsCmd> received from NPORT <did> */
5690 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
5691 "0112 ELS command x%x received from NPORT x%x "
5692 "Data: x%x\n", cmd, did, vport->port_state);
5695 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
5696 "RCV PLOGI: did:x%x/ste:x%x flg:x%x",
5697 did, vport->port_state, ndlp->nlp_flag);
5699 phba->fc_stat.elsRcvPLOGI++;
5700 ndlp = lpfc_plogi_confirm_nport(phba, payload, ndlp);
5702 lpfc_send_els_event(vport, ndlp, payload);
5703 if (vport->port_state < LPFC_DISC_AUTH) {
5704 if (!(phba->pport->fc_flag & FC_PT2PT) ||
5705 (phba->pport->fc_flag & FC_PT2PT_PLOGI)) {
5706 rjt_err = LSRJT_UNABLE_TPC;
5709 /* We get here, and drop thru, if we are PT2PT with
5710 * another NPort and the other side has initiated
5711 * the PLOGI before responding to our FLOGI.
5715 shost = lpfc_shost_from_vport(vport);
5716 spin_lock_irq(shost->host_lock);
5717 ndlp->nlp_flag &= ~NLP_TARGET_REMOVE;
5718 spin_unlock_irq(shost->host_lock);
5720 lpfc_disc_state_machine(vport, ndlp, elsiocb,
5725 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
5726 "RCV FLOGI: did:x%x/ste:x%x flg:x%x",
5727 did, vport->port_state, ndlp->nlp_flag);
5729 phba->fc_stat.elsRcvFLOGI++;
5730 lpfc_els_rcv_flogi(vport, elsiocb, ndlp);
5735 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
5736 "RCV LOGO: did:x%x/ste:x%x flg:x%x",
5737 did, vport->port_state, ndlp->nlp_flag);
5739 phba->fc_stat.elsRcvLOGO++;
5740 lpfc_send_els_event(vport, ndlp, payload);
5741 if (vport->port_state < LPFC_DISC_AUTH) {
5742 rjt_err = LSRJT_UNABLE_TPC;
5745 lpfc_disc_state_machine(vport, ndlp, elsiocb, NLP_EVT_RCV_LOGO);
5748 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
5749 "RCV PRLO: did:x%x/ste:x%x flg:x%x",
5750 did, vport->port_state, ndlp->nlp_flag);
5752 phba->fc_stat.elsRcvPRLO++;
5753 lpfc_send_els_event(vport, ndlp, payload);
5754 if (vport->port_state < LPFC_DISC_AUTH) {
5755 rjt_err = LSRJT_UNABLE_TPC;
5758 lpfc_disc_state_machine(vport, ndlp, elsiocb, NLP_EVT_RCV_PRLO);
5761 phba->fc_stat.elsRcvRSCN++;
5762 lpfc_els_rcv_rscn(vport, elsiocb, ndlp);
5767 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
5768 "RCV ADISC: did:x%x/ste:x%x flg:x%x",
5769 did, vport->port_state, ndlp->nlp_flag);
5771 lpfc_send_els_event(vport, ndlp, payload);
5772 phba->fc_stat.elsRcvADISC++;
5773 if (vport->port_state < LPFC_DISC_AUTH) {
5774 rjt_err = LSRJT_UNABLE_TPC;
5777 lpfc_disc_state_machine(vport, ndlp, elsiocb,
5781 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
5782 "RCV PDISC: did:x%x/ste:x%x flg:x%x",
5783 did, vport->port_state, ndlp->nlp_flag);
5785 phba->fc_stat.elsRcvPDISC++;
5786 if (vport->port_state < LPFC_DISC_AUTH) {
5787 rjt_err = LSRJT_UNABLE_TPC;
5790 lpfc_disc_state_machine(vport, ndlp, elsiocb,
5794 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
5795 "RCV FARPR: did:x%x/ste:x%x flg:x%x",
5796 did, vport->port_state, ndlp->nlp_flag);
5798 phba->fc_stat.elsRcvFARPR++;
5799 lpfc_els_rcv_farpr(vport, elsiocb, ndlp);
5802 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
5803 "RCV FARP: did:x%x/ste:x%x flg:x%x",
5804 did, vport->port_state, ndlp->nlp_flag);
5806 phba->fc_stat.elsRcvFARP++;
5807 lpfc_els_rcv_farp(vport, elsiocb, ndlp);
5810 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
5811 "RCV FAN: did:x%x/ste:x%x flg:x%x",
5812 did, vport->port_state, ndlp->nlp_flag);
5814 phba->fc_stat.elsRcvFAN++;
5815 lpfc_els_rcv_fan(vport, elsiocb, ndlp);
5818 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
5819 "RCV PRLI: did:x%x/ste:x%x flg:x%x",
5820 did, vport->port_state, ndlp->nlp_flag);
5822 phba->fc_stat.elsRcvPRLI++;
5823 if (vport->port_state < LPFC_DISC_AUTH) {
5824 rjt_err = LSRJT_UNABLE_TPC;
5827 lpfc_disc_state_machine(vport, ndlp, elsiocb, NLP_EVT_RCV_PRLI);
5830 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
5831 "RCV LIRR: did:x%x/ste:x%x flg:x%x",
5832 did, vport->port_state, ndlp->nlp_flag);
5834 phba->fc_stat.elsRcvLIRR++;
5835 lpfc_els_rcv_lirr(vport, elsiocb, ndlp);
5840 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
5841 "RCV RPS: did:x%x/ste:x%x flg:x%x",
5842 did, vport->port_state, ndlp->nlp_flag);
5844 phba->fc_stat.elsRcvRPS++;
5845 lpfc_els_rcv_rps(vport, elsiocb, ndlp);
5850 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
5851 "RCV RPL: did:x%x/ste:x%x flg:x%x",
5852 did, vport->port_state, ndlp->nlp_flag);
5854 phba->fc_stat.elsRcvRPL++;
5855 lpfc_els_rcv_rpl(vport, elsiocb, ndlp);
5860 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
5861 "RCV RNID: did:x%x/ste:x%x flg:x%x",
5862 did, vport->port_state, ndlp->nlp_flag);
5864 phba->fc_stat.elsRcvRNID++;
5865 lpfc_els_rcv_rnid(vport, elsiocb, ndlp);
5870 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
5871 "RCV RRQ: did:x%x/ste:x%x flg:x%x",
5872 did, vport->port_state, ndlp->nlp_flag);
5874 phba->fc_stat.elsRcvRRQ++;
5875 lpfc_els_rcv_rrq(vport, elsiocb, ndlp);
5880 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
5881 "RCV ELS cmd: cmd:x%x did:x%x/ste:x%x",
5882 cmd, did, vport->port_state);
5884 /* Unsupported ELS command, reject */
5885 rjt_err = LSRJT_INVALID_CMD;
5887 /* Unknown ELS command <elsCmd> received from NPORT <did> */
5888 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
5889 "0115 Unknown ELS command x%x "
5890 "received from NPORT x%x\n", cmd, did);
5896 /* check if need to LS_RJT received ELS cmd */
5898 memset(&stat, 0, sizeof(stat));
5899 stat.un.b.lsRjtRsnCode = rjt_err;
5900 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
5901 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, elsiocb, ndlp,
5905 lpfc_nlp_put(elsiocb->context1);
5906 elsiocb->context1 = NULL;
5910 if (vport && !(vport->load_flag & FC_UNLOADING))
5911 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
5912 "0111 Dropping received ELS cmd "
5913 "Data: x%x x%x x%x\n",
5914 icmd->ulpStatus, icmd->un.ulpWord[4], icmd->ulpTimeout);
5915 phba->fc_stat.elsRcvDrop++;
5919 * lpfc_find_vport_by_vpid - Find a vport on a HBA through vport identifier
5920 * @phba: pointer to lpfc hba data structure.
5921 * @vpi: host virtual N_Port identifier.
5923 * This routine finds a vport on a HBA (referred by @phba) through a
5924 * @vpi. The function walks the HBA's vport list and returns the address
5925 * of the vport with the matching @vpi.
5928 * NULL - No vport with the matching @vpi found
5929 * Otherwise - Address to the vport with the matching @vpi.
5932 lpfc_find_vport_by_vpid(struct lpfc_hba *phba, uint16_t vpi)
5934 struct lpfc_vport *vport;
5935 unsigned long flags;
5937 spin_lock_irqsave(&phba->hbalock, flags);
5938 list_for_each_entry(vport, &phba->port_list, listentry) {
5939 if (vport->vpi == vpi) {
5940 spin_unlock_irqrestore(&phba->hbalock, flags);
5944 spin_unlock_irqrestore(&phba->hbalock, flags);
5949 * lpfc_els_unsol_event - Process an unsolicited event from an els sli ring
5950 * @phba: pointer to lpfc hba data structure.
5951 * @pring: pointer to a SLI ring.
5952 * @elsiocb: pointer to lpfc els iocb data structure.
5954 * This routine is used to process an unsolicited event received from a SLI
5955 * (Service Level Interface) ring. The actual processing of the data buffer
5956 * associated with the unsolicited event is done by invoking the routine
5957 * lpfc_els_unsol_buffer() after properly set up the iocb buffer from the
5958 * SLI ring on which the unsolicited event was received.
5961 lpfc_els_unsol_event(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
5962 struct lpfc_iocbq *elsiocb)
5964 struct lpfc_vport *vport = phba->pport;
5965 IOCB_t *icmd = &elsiocb->iocb;
5967 struct lpfc_dmabuf *bdeBuf1 = elsiocb->context2;
5968 struct lpfc_dmabuf *bdeBuf2 = elsiocb->context3;
5970 elsiocb->context1 = NULL;
5971 elsiocb->context2 = NULL;
5972 elsiocb->context3 = NULL;
5974 if (icmd->ulpStatus == IOSTAT_NEED_BUFFER) {
5975 lpfc_sli_hbqbuf_add_hbqs(phba, LPFC_ELS_HBQ);
5976 } else if (icmd->ulpStatus == IOSTAT_LOCAL_REJECT &&
5977 (icmd->un.ulpWord[4] & 0xff) == IOERR_RCV_BUFFER_WAITING) {
5978 phba->fc_stat.NoRcvBuf++;
5979 /* Not enough posted buffers; Try posting more buffers */
5980 if (!(phba->sli3_options & LPFC_SLI3_HBQ_ENABLED))
5981 lpfc_post_buffer(phba, pring, 0);
5985 if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
5986 (icmd->ulpCommand == CMD_IOCB_RCV_ELS64_CX ||
5987 icmd->ulpCommand == CMD_IOCB_RCV_SEQ64_CX)) {
5988 if (icmd->unsli3.rcvsli3.vpi == 0xffff)
5989 vport = phba->pport;
5991 vport = lpfc_find_vport_by_vpid(phba,
5992 icmd->unsli3.rcvsli3.vpi - phba->vpi_base);
5994 /* If there are no BDEs associated
5995 * with this IOCB, there is nothing to do.
5997 if (icmd->ulpBdeCount == 0)
6000 /* type of ELS cmd is first 32bit word
6003 if (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) {
6004 elsiocb->context2 = bdeBuf1;
6006 paddr = getPaddr(icmd->un.cont64[0].addrHigh,
6007 icmd->un.cont64[0].addrLow);
6008 elsiocb->context2 = lpfc_sli_ringpostbuf_get(phba, pring,
6012 lpfc_els_unsol_buffer(phba, pring, vport, elsiocb);
6014 * The different unsolicited event handlers would tell us
6015 * if they are done with "mp" by setting context2 to NULL.
6017 if (elsiocb->context2) {
6018 lpfc_in_buf_free(phba, (struct lpfc_dmabuf *)elsiocb->context2);
6019 elsiocb->context2 = NULL;
6022 /* RCV_ELS64_CX provide for 2 BDEs - process 2nd if included */
6023 if ((phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) &&
6024 icmd->ulpBdeCount == 2) {
6025 elsiocb->context2 = bdeBuf2;
6026 lpfc_els_unsol_buffer(phba, pring, vport, elsiocb);
6027 /* free mp if we are done with it */
6028 if (elsiocb->context2) {
6029 lpfc_in_buf_free(phba, elsiocb->context2);
6030 elsiocb->context2 = NULL;
6036 * lpfc_do_scr_ns_plogi - Issue a plogi to the name server for scr
6037 * @phba: pointer to lpfc hba data structure.
6038 * @vport: pointer to a virtual N_Port data structure.
6040 * This routine issues a Port Login (PLOGI) to the Name Server with
6041 * State Change Request (SCR) for a @vport. This routine will create an
6042 * ndlp for the Name Server associated to the @vport if such node does
6043 * not already exist. The PLOGI to Name Server is issued by invoking the
6044 * lpfc_issue_els_plogi() routine. If Fabric-Device Management Interface
6045 * (FDMI) is configured to the @vport, a FDMI node will be created and
6046 * the PLOGI to FDMI is issued by invoking lpfc_issue_els_plogi() routine.
6049 lpfc_do_scr_ns_plogi(struct lpfc_hba *phba, struct lpfc_vport *vport)
6051 struct lpfc_nodelist *ndlp, *ndlp_fdmi;
6053 ndlp = lpfc_findnode_did(vport, NameServer_DID);
6055 ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL);
6057 if (phba->fc_topology == TOPOLOGY_LOOP) {
6058 lpfc_disc_start(vport);
6061 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
6062 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
6063 "0251 NameServer login: no memory\n");
6066 lpfc_nlp_init(vport, ndlp, NameServer_DID);
6067 } else if (!NLP_CHK_NODE_ACT(ndlp)) {
6068 ndlp = lpfc_enable_node(vport, ndlp, NLP_STE_UNUSED_NODE);
6070 if (phba->fc_topology == TOPOLOGY_LOOP) {
6071 lpfc_disc_start(vport);
6074 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
6075 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
6076 "0348 NameServer login: node freed\n");
6080 ndlp->nlp_type |= NLP_FABRIC;
6082 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
6084 if (lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0)) {
6085 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
6086 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
6087 "0252 Cannot issue NameServer login\n");
6091 if (vport->cfg_fdmi_on) {
6092 ndlp_fdmi = mempool_alloc(phba->nlp_mem_pool,
6095 lpfc_nlp_init(vport, ndlp_fdmi, FDMI_DID);
6096 ndlp_fdmi->nlp_type |= NLP_FABRIC;
6097 lpfc_nlp_set_state(vport, ndlp_fdmi,
6098 NLP_STE_PLOGI_ISSUE);
6099 lpfc_issue_els_plogi(vport, ndlp_fdmi->nlp_DID,
6107 * lpfc_cmpl_reg_new_vport - Completion callback function to register new vport
6108 * @phba: pointer to lpfc hba data structure.
6109 * @pmb: pointer to the driver internal queue element for mailbox command.
6111 * This routine is the completion callback function to register new vport
6112 * mailbox command. If the new vport mailbox command completes successfully,
6113 * the fabric registration login shall be performed on physical port (the
6114 * new vport created is actually a physical port, with VPI 0) or the port
6115 * login to Name Server for State Change Request (SCR) will be performed
6116 * on virtual port (real virtual port, with VPI greater than 0).
6119 lpfc_cmpl_reg_new_vport(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
6121 struct lpfc_vport *vport = pmb->vport;
6122 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
6123 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2;
6124 MAILBOX_t *mb = &pmb->u.mb;
6127 spin_lock_irq(shost->host_lock);
6128 vport->fc_flag &= ~FC_VPORT_NEEDS_REG_VPI;
6129 spin_unlock_irq(shost->host_lock);
6131 if (mb->mbxStatus) {
6132 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
6133 "0915 Register VPI failed : Status: x%x"
6134 " upd bit: x%x \n", mb->mbxStatus,
6135 mb->un.varRegVpi.upd);
6136 if (phba->sli_rev == LPFC_SLI_REV4 &&
6137 mb->un.varRegVpi.upd)
6138 goto mbox_err_exit ;
6140 switch (mb->mbxStatus) {
6141 case 0x11: /* unsupported feature */
6142 case 0x9603: /* max_vpi exceeded */
6143 case 0x9602: /* Link event since CLEAR_LA */
6144 /* giving up on vport registration */
6145 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
6146 spin_lock_irq(shost->host_lock);
6147 vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
6148 spin_unlock_irq(shost->host_lock);
6149 lpfc_can_disctmo(vport);
6151 /* If reg_vpi fail with invalid VPI status, re-init VPI */
6153 spin_lock_irq(shost->host_lock);
6154 vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
6155 spin_unlock_irq(shost->host_lock);
6156 lpfc_init_vpi(phba, pmb, vport->vpi);
6158 pmb->mbox_cmpl = lpfc_init_vpi_cmpl;
6159 rc = lpfc_sli_issue_mbox(phba, pmb,
6161 if (rc == MBX_NOT_FINISHED) {
6162 lpfc_printf_vlog(vport,
6164 "2732 Failed to issue INIT_VPI"
6165 " mailbox command\n");
6172 /* Try to recover from this error */
6173 lpfc_mbx_unreg_vpi(vport);
6174 spin_lock_irq(shost->host_lock);
6175 vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
6176 spin_unlock_irq(shost->host_lock);
6177 if (vport->port_type == LPFC_PHYSICAL_PORT
6178 && !(vport->fc_flag & FC_LOGO_RCVD_DID_CHNG))
6179 lpfc_initial_flogi(vport);
6181 lpfc_initial_fdisc(vport);
6185 spin_lock_irq(shost->host_lock);
6186 vport->vpi_state |= LPFC_VPI_REGISTERED;
6187 spin_unlock_irq(shost->host_lock);
6188 if (vport == phba->pport) {
6189 if (phba->sli_rev < LPFC_SLI_REV4)
6190 lpfc_issue_fabric_reglogin(vport);
6193 * If the physical port is instantiated using
6194 * FDISC, do not start vport discovery.
6196 if (vport->port_state != LPFC_FDISC)
6197 lpfc_start_fdiscs(phba);
6198 lpfc_do_scr_ns_plogi(phba, vport);
6201 lpfc_do_scr_ns_plogi(phba, vport);
6204 /* Now, we decrement the ndlp reference count held for this
6209 mempool_free(pmb, phba->mbox_mem_pool);
6214 * lpfc_register_new_vport - Register a new vport with a HBA
6215 * @phba: pointer to lpfc hba data structure.
6216 * @vport: pointer to a host virtual N_Port data structure.
6217 * @ndlp: pointer to a node-list data structure.
6219 * This routine registers the @vport as a new virtual port with a HBA.
6220 * It is done through a registering vpi mailbox command.
6223 lpfc_register_new_vport(struct lpfc_hba *phba, struct lpfc_vport *vport,
6224 struct lpfc_nodelist *ndlp)
6226 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
6229 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
6231 lpfc_reg_vpi(vport, mbox);
6232 mbox->vport = vport;
6233 mbox->context2 = lpfc_nlp_get(ndlp);
6234 mbox->mbox_cmpl = lpfc_cmpl_reg_new_vport;
6235 if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT)
6236 == MBX_NOT_FINISHED) {
6237 /* mailbox command not success, decrement ndlp
6238 * reference count for this command
6241 mempool_free(mbox, phba->mbox_mem_pool);
6243 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
6244 "0253 Register VPI: Can't send mbox\n");
6248 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
6249 "0254 Register VPI: no memory\n");
6255 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
6256 spin_lock_irq(shost->host_lock);
6257 vport->fc_flag &= ~FC_VPORT_NEEDS_REG_VPI;
6258 spin_unlock_irq(shost->host_lock);
6263 * lpfc_cancel_all_vport_retry_delay_timer - Cancel all vport retry delay timer
6264 * @phba: pointer to lpfc hba data structure.
6266 * This routine cancels the retry delay timers to all the vports.
6269 lpfc_cancel_all_vport_retry_delay_timer(struct lpfc_hba *phba)
6271 struct lpfc_vport **vports;
6272 struct lpfc_nodelist *ndlp;
6273 uint32_t link_state;
6276 /* Treat this failure as linkdown for all vports */
6277 link_state = phba->link_state;
6278 lpfc_linkdown(phba);
6279 phba->link_state = link_state;
6281 vports = lpfc_create_vport_work_array(phba);
6284 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
6285 ndlp = lpfc_findnode_did(vports[i], Fabric_DID);
6287 lpfc_cancel_retry_delay_tmo(vports[i], ndlp);
6288 lpfc_els_flush_cmd(vports[i]);
6290 lpfc_destroy_vport_work_array(phba, vports);
6295 * lpfc_retry_pport_discovery - Start timer to retry FLOGI.
6296 * @phba: pointer to lpfc hba data structure.
6298 * This routine abort all pending discovery commands and
6299 * start a timer to retry FLOGI for the physical port
6303 lpfc_retry_pport_discovery(struct lpfc_hba *phba)
6305 struct lpfc_nodelist *ndlp;
6306 struct Scsi_Host *shost;
6308 /* Cancel the all vports retry delay retry timers */
6309 lpfc_cancel_all_vport_retry_delay_timer(phba);
6311 /* If fabric require FLOGI, then re-instantiate physical login */
6312 ndlp = lpfc_findnode_did(phba->pport, Fabric_DID);
6316 shost = lpfc_shost_from_vport(phba->pport);
6317 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ);
6318 spin_lock_irq(shost->host_lock);
6319 ndlp->nlp_flag |= NLP_DELAY_TMO;
6320 spin_unlock_irq(shost->host_lock);
6321 ndlp->nlp_last_elscmd = ELS_CMD_FLOGI;
6322 phba->pport->port_state = LPFC_FLOGI;
6327 * lpfc_fabric_login_reqd - Check if FLOGI required.
6328 * @phba: pointer to lpfc hba data structure.
6329 * @cmdiocb: pointer to FDISC command iocb.
6330 * @rspiocb: pointer to FDISC response iocb.
6332 * This routine checks if a FLOGI is reguired for FDISC
6336 lpfc_fabric_login_reqd(struct lpfc_hba *phba,
6337 struct lpfc_iocbq *cmdiocb,
6338 struct lpfc_iocbq *rspiocb)
6341 if ((rspiocb->iocb.ulpStatus != IOSTAT_FABRIC_RJT) ||
6342 (rspiocb->iocb.un.ulpWord[4] != RJT_LOGIN_REQUIRED))
6349 * lpfc_cmpl_els_fdisc - Completion function for fdisc iocb command
6350 * @phba: pointer to lpfc hba data structure.
6351 * @cmdiocb: pointer to lpfc command iocb data structure.
6352 * @rspiocb: pointer to lpfc response iocb data structure.
6354 * This routine is the completion callback function to a Fabric Discover
6355 * (FDISC) ELS command. Since all the FDISC ELS commands are issued
6356 * single threaded, each FDISC completion callback function will reset
6357 * the discovery timer for all vports such that the timers will not get
6358 * unnecessary timeout. The function checks the FDISC IOCB status. If error
6359 * detected, the vport will be set to FC_VPORT_FAILED state. Otherwise,the
6360 * vport will set to FC_VPORT_ACTIVE state. It then checks whether the DID
6361 * assigned to the vport has been changed with the completion of the FDISC
6362 * command. If so, both RPI (Remote Port Index) and VPI (Virtual Port Index)
6363 * are unregistered from the HBA, and then the lpfc_register_new_vport()
6364 * routine is invoked to register new vport with the HBA. Otherwise, the
6365 * lpfc_do_scr_ns_plogi() routine is invoked to issue a PLOGI to the Name
6366 * Server for State Change Request (SCR).
6369 lpfc_cmpl_els_fdisc(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
6370 struct lpfc_iocbq *rspiocb)
6372 struct lpfc_vport *vport = cmdiocb->vport;
6373 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
6374 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) cmdiocb->context1;
6375 struct lpfc_nodelist *np;
6376 struct lpfc_nodelist *next_np;
6377 IOCB_t *irsp = &rspiocb->iocb;
6378 struct lpfc_iocbq *piocb;
6380 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
6381 "0123 FDISC completes. x%x/x%x prevDID: x%x\n",
6382 irsp->ulpStatus, irsp->un.ulpWord[4],
6384 /* Since all FDISCs are being single threaded, we
6385 * must reset the discovery timer for ALL vports
6386 * waiting to send FDISC when one completes.
6388 list_for_each_entry(piocb, &phba->fabric_iocb_list, list) {
6389 lpfc_set_disctmo(piocb->vport);
6392 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
6393 "FDISC cmpl: status:x%x/x%x prevdid:x%x",
6394 irsp->ulpStatus, irsp->un.ulpWord[4], vport->fc_prevDID);
6396 if (irsp->ulpStatus) {
6398 if (lpfc_fabric_login_reqd(phba, cmdiocb, rspiocb)) {
6399 lpfc_retry_pport_discovery(phba);
6403 /* Check for retry */
6404 if (lpfc_els_retry(phba, cmdiocb, rspiocb))
6407 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
6408 "0126 FDISC failed. (%d/%d)\n",
6409 irsp->ulpStatus, irsp->un.ulpWord[4]);
6412 spin_lock_irq(shost->host_lock);
6413 vport->fc_flag &= ~FC_VPORT_CVL_RCVD;
6414 vport->fc_flag &= ~FC_VPORT_LOGO_RCVD;
6415 vport->fc_flag |= FC_FABRIC;
6416 if (vport->phba->fc_topology == TOPOLOGY_LOOP)
6417 vport->fc_flag |= FC_PUBLIC_LOOP;
6418 spin_unlock_irq(shost->host_lock);
6420 vport->fc_myDID = irsp->un.ulpWord[4] & Mask_DID;
6421 lpfc_vport_set_state(vport, FC_VPORT_ACTIVE);
6422 if ((vport->fc_prevDID != vport->fc_myDID) &&
6423 !(vport->fc_flag & FC_VPORT_NEEDS_REG_VPI)) {
6424 /* If our NportID changed, we need to ensure all
6425 * remaining NPORTs get unreg_login'ed so we can
6428 list_for_each_entry_safe(np, next_np,
6429 &vport->fc_nodes, nlp_listp) {
6430 if (!NLP_CHK_NODE_ACT(ndlp) ||
6431 (np->nlp_state != NLP_STE_NPR_NODE) ||
6432 !(np->nlp_flag & NLP_NPR_ADISC))
6434 spin_lock_irq(shost->host_lock);
6435 np->nlp_flag &= ~NLP_NPR_ADISC;
6436 spin_unlock_irq(shost->host_lock);
6437 lpfc_unreg_rpi(vport, np);
6439 lpfc_cleanup_pending_mbox(vport);
6440 lpfc_mbx_unreg_vpi(vport);
6441 spin_lock_irq(shost->host_lock);
6442 vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
6443 if (phba->sli_rev == LPFC_SLI_REV4)
6444 vport->fc_flag |= FC_VPORT_NEEDS_INIT_VPI;
6446 vport->fc_flag |= FC_LOGO_RCVD_DID_CHNG;
6447 spin_unlock_irq(shost->host_lock);
6448 } else if ((phba->sli_rev == LPFC_SLI_REV4) &&
6449 !(vport->fc_flag & FC_VPORT_NEEDS_REG_VPI)) {
6451 * Driver needs to re-reg VPI in order for f/w
6452 * to update the MAC address.
6454 lpfc_register_new_vport(phba, vport, ndlp);
6458 if (vport->fc_flag & FC_VPORT_NEEDS_INIT_VPI)
6459 lpfc_issue_init_vpi(vport);
6460 else if (vport->fc_flag & FC_VPORT_NEEDS_REG_VPI)
6461 lpfc_register_new_vport(phba, vport, ndlp);
6463 lpfc_do_scr_ns_plogi(phba, vport);
6466 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
6467 /* Cancel discovery timer */
6468 lpfc_can_disctmo(vport);
6471 lpfc_els_free_iocb(phba, cmdiocb);
6475 * lpfc_issue_els_fdisc - Issue a fdisc iocb command
6476 * @vport: pointer to a virtual N_Port data structure.
6477 * @ndlp: pointer to a node-list data structure.
6478 * @retry: number of retries to the command IOCB.
6480 * This routine prepares and issues a Fabric Discover (FDISC) IOCB to
6481 * a remote node (@ndlp) off a @vport. It uses the lpfc_issue_fabric_iocb()
6482 * routine to issue the IOCB, which makes sure only one outstanding fabric
6483 * IOCB will be sent off HBA at any given time.
6485 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
6486 * will be incremented by 1 for holding the ndlp and the reference to ndlp
6487 * will be stored into the context1 field of the IOCB for the completion
6488 * callback function to the FDISC ELS command.
6491 * 0 - Successfully issued fdisc iocb command
6492 * 1 - Failed to issue fdisc iocb command
6495 lpfc_issue_els_fdisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
6498 struct lpfc_hba *phba = vport->phba;
6500 struct lpfc_iocbq *elsiocb;
6501 struct serv_parm *sp;
6504 int did = ndlp->nlp_DID;
6507 vport->port_state = LPFC_FDISC;
6508 cmdsize = (sizeof(uint32_t) + sizeof(struct serv_parm));
6509 elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp, did,
6512 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
6513 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
6514 "0255 Issue FDISC: no IOCB\n");
6518 icmd = &elsiocb->iocb;
6519 icmd->un.elsreq64.myID = 0;
6520 icmd->un.elsreq64.fl = 1;
6522 if (phba->sli_rev == LPFC_SLI_REV4) {
6523 /* FDISC needs to be 1 for WQE VPI */
6524 elsiocb->iocb.ulpCt_h = (SLI4_CT_VPI >> 1) & 1;
6525 elsiocb->iocb.ulpCt_l = SLI4_CT_VPI & 1 ;
6526 /* Set the ulpContext to the vpi */
6527 elsiocb->iocb.ulpContext = vport->vpi + phba->vpi_base;
6529 /* For FDISC, Let FDISC rsp set the NPortID for this VPI */
6534 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
6535 *((uint32_t *) (pcmd)) = ELS_CMD_FDISC;
6536 pcmd += sizeof(uint32_t); /* CSP Word 1 */
6537 memcpy(pcmd, &vport->phba->pport->fc_sparam, sizeof(struct serv_parm));
6538 sp = (struct serv_parm *) pcmd;
6539 /* Setup CSPs accordingly for Fabric */
6540 sp->cmn.e_d_tov = 0;
6541 sp->cmn.w2.r_a_tov = 0;
6542 sp->cls1.classValid = 0;
6543 sp->cls2.seqDelivery = 1;
6544 sp->cls3.seqDelivery = 1;
6546 pcmd += sizeof(uint32_t); /* CSP Word 2 */
6547 pcmd += sizeof(uint32_t); /* CSP Word 3 */
6548 pcmd += sizeof(uint32_t); /* CSP Word 4 */
6549 pcmd += sizeof(uint32_t); /* Port Name */
6550 memcpy(pcmd, &vport->fc_portname, 8);
6551 pcmd += sizeof(uint32_t); /* Node Name */
6552 pcmd += sizeof(uint32_t); /* Node Name */
6553 memcpy(pcmd, &vport->fc_nodename, 8);
6555 lpfc_set_disctmo(vport);
6557 phba->fc_stat.elsXmitFDISC++;
6558 elsiocb->iocb_cmpl = lpfc_cmpl_els_fdisc;
6560 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
6561 "Issue FDISC: did:x%x",
6564 rc = lpfc_issue_fabric_iocb(phba, elsiocb);
6565 if (rc == IOCB_ERROR) {
6566 lpfc_els_free_iocb(phba, elsiocb);
6567 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
6568 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
6569 "0256 Issue FDISC: Cannot send IOCB\n");
6572 lpfc_vport_set_state(vport, FC_VPORT_INITIALIZING);
6577 * lpfc_cmpl_els_npiv_logo - Completion function with vport logo
6578 * @phba: pointer to lpfc hba data structure.
6579 * @cmdiocb: pointer to lpfc command iocb data structure.
6580 * @rspiocb: pointer to lpfc response iocb data structure.
6582 * This routine is the completion callback function to the issuing of a LOGO
6583 * ELS command off a vport. It frees the command IOCB and then decrement the
6584 * reference count held on ndlp for this completion function, indicating that
6585 * the reference to the ndlp is no long needed. Note that the
6586 * lpfc_els_free_iocb() routine decrements the ndlp reference held for this
6587 * callback function and an additional explicit ndlp reference decrementation
6588 * will trigger the actual release of the ndlp.
6591 lpfc_cmpl_els_npiv_logo(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
6592 struct lpfc_iocbq *rspiocb)
6594 struct lpfc_vport *vport = cmdiocb->vport;
6596 struct lpfc_nodelist *ndlp;
6597 ndlp = (struct lpfc_nodelist *)cmdiocb->context1;
6599 irsp = &rspiocb->iocb;
6600 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
6601 "LOGO npiv cmpl: status:x%x/x%x did:x%x",
6602 irsp->ulpStatus, irsp->un.ulpWord[4], irsp->un.rcvels.remoteID);
6604 lpfc_els_free_iocb(phba, cmdiocb);
6605 vport->unreg_vpi_cmpl = VPORT_ERROR;
6607 /* Trigger the release of the ndlp after logo */
6612 * lpfc_issue_els_npiv_logo - Issue a logo off a vport
6613 * @vport: pointer to a virtual N_Port data structure.
6614 * @ndlp: pointer to a node-list data structure.
6616 * This routine issues a LOGO ELS command to an @ndlp off a @vport.
6618 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
6619 * will be incremented by 1 for holding the ndlp and the reference to ndlp
6620 * will be stored into the context1 field of the IOCB for the completion
6621 * callback function to the LOGO ELS command.
6624 * 0 - Successfully issued logo off the @vport
6625 * 1 - Failed to issue logo off the @vport
6628 lpfc_issue_els_npiv_logo(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
6630 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
6631 struct lpfc_hba *phba = vport->phba;
6633 struct lpfc_iocbq *elsiocb;
6637 cmdsize = 2 * sizeof(uint32_t) + sizeof(struct lpfc_name);
6638 elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, 0, ndlp, ndlp->nlp_DID,
6643 icmd = &elsiocb->iocb;
6644 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
6645 *((uint32_t *) (pcmd)) = ELS_CMD_LOGO;
6646 pcmd += sizeof(uint32_t);
6648 /* Fill in LOGO payload */
6649 *((uint32_t *) (pcmd)) = be32_to_cpu(vport->fc_myDID);
6650 pcmd += sizeof(uint32_t);
6651 memcpy(pcmd, &vport->fc_portname, sizeof(struct lpfc_name));
6653 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
6654 "Issue LOGO npiv did:x%x flg:x%x",
6655 ndlp->nlp_DID, ndlp->nlp_flag, 0);
6657 elsiocb->iocb_cmpl = lpfc_cmpl_els_npiv_logo;
6658 spin_lock_irq(shost->host_lock);
6659 ndlp->nlp_flag |= NLP_LOGO_SND;
6660 spin_unlock_irq(shost->host_lock);
6661 if (lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0) ==
6663 spin_lock_irq(shost->host_lock);
6664 ndlp->nlp_flag &= ~NLP_LOGO_SND;
6665 spin_unlock_irq(shost->host_lock);
6666 lpfc_els_free_iocb(phba, elsiocb);
6673 * lpfc_fabric_block_timeout - Handler function to the fabric block timer
6674 * @ptr: holder for the timer function associated data.
6676 * This routine is invoked by the fabric iocb block timer after
6677 * timeout. It posts the fabric iocb block timeout event by setting the
6678 * WORKER_FABRIC_BLOCK_TMO bit to work port event bitmap and then invokes
6679 * lpfc_worker_wake_up() routine to wake up the worker thread. It is for
6680 * the worker thread to invoke the lpfc_unblock_fabric_iocbs() on the
6681 * posted event WORKER_FABRIC_BLOCK_TMO.
6684 lpfc_fabric_block_timeout(unsigned long ptr)
6686 struct lpfc_hba *phba = (struct lpfc_hba *) ptr;
6687 unsigned long iflags;
6688 uint32_t tmo_posted;
6690 spin_lock_irqsave(&phba->pport->work_port_lock, iflags);
6691 tmo_posted = phba->pport->work_port_events & WORKER_FABRIC_BLOCK_TMO;
6693 phba->pport->work_port_events |= WORKER_FABRIC_BLOCK_TMO;
6694 spin_unlock_irqrestore(&phba->pport->work_port_lock, iflags);
6697 lpfc_worker_wake_up(phba);
6702 * lpfc_resume_fabric_iocbs - Issue a fabric iocb from driver internal list
6703 * @phba: pointer to lpfc hba data structure.
6705 * This routine issues one fabric iocb from the driver internal list to
6706 * the HBA. It first checks whether it's ready to issue one fabric iocb to
6707 * the HBA (whether there is no outstanding fabric iocb). If so, it shall
6708 * remove one pending fabric iocb from the driver internal list and invokes
6709 * lpfc_sli_issue_iocb() routine to send the fabric iocb to the HBA.
6712 lpfc_resume_fabric_iocbs(struct lpfc_hba *phba)
6714 struct lpfc_iocbq *iocb;
6715 unsigned long iflags;
6721 spin_lock_irqsave(&phba->hbalock, iflags);
6722 /* Post any pending iocb to the SLI layer */
6723 if (atomic_read(&phba->fabric_iocb_count) == 0) {
6724 list_remove_head(&phba->fabric_iocb_list, iocb, typeof(*iocb),
6727 /* Increment fabric iocb count to hold the position */
6728 atomic_inc(&phba->fabric_iocb_count);
6730 spin_unlock_irqrestore(&phba->hbalock, iflags);
6732 iocb->fabric_iocb_cmpl = iocb->iocb_cmpl;
6733 iocb->iocb_cmpl = lpfc_cmpl_fabric_iocb;
6734 iocb->iocb_flag |= LPFC_IO_FABRIC;
6736 lpfc_debugfs_disc_trc(iocb->vport, LPFC_DISC_TRC_ELS_CMD,
6737 "Fabric sched1: ste:x%x",
6738 iocb->vport->port_state, 0, 0);
6740 ret = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, iocb, 0);
6742 if (ret == IOCB_ERROR) {
6743 iocb->iocb_cmpl = iocb->fabric_iocb_cmpl;
6744 iocb->fabric_iocb_cmpl = NULL;
6745 iocb->iocb_flag &= ~LPFC_IO_FABRIC;
6747 cmd->ulpStatus = IOSTAT_LOCAL_REJECT;
6748 cmd->un.ulpWord[4] = IOERR_SLI_ABORTED;
6749 iocb->iocb_cmpl(phba, iocb, iocb);
6751 atomic_dec(&phba->fabric_iocb_count);
6760 * lpfc_unblock_fabric_iocbs - Unblock issuing fabric iocb command
6761 * @phba: pointer to lpfc hba data structure.
6763 * This routine unblocks the issuing fabric iocb command. The function
6764 * will clear the fabric iocb block bit and then invoke the routine
6765 * lpfc_resume_fabric_iocbs() to issue one of the pending fabric iocb
6766 * from the driver internal fabric iocb list.
6769 lpfc_unblock_fabric_iocbs(struct lpfc_hba *phba)
6771 clear_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags);
6773 lpfc_resume_fabric_iocbs(phba);
6778 * lpfc_block_fabric_iocbs - Block issuing fabric iocb command
6779 * @phba: pointer to lpfc hba data structure.
6781 * This routine blocks the issuing fabric iocb for a specified amount of
6782 * time (currently 100 ms). This is done by set the fabric iocb block bit
6783 * and set up a timeout timer for 100ms. When the block bit is set, no more
6784 * fabric iocb will be issued out of the HBA.
6787 lpfc_block_fabric_iocbs(struct lpfc_hba *phba)
6791 blocked = test_and_set_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags);
6792 /* Start a timer to unblock fabric iocbs after 100ms */
6794 mod_timer(&phba->fabric_block_timer, jiffies + HZ/10 );
6800 * lpfc_cmpl_fabric_iocb - Completion callback function for fabric iocb
6801 * @phba: pointer to lpfc hba data structure.
6802 * @cmdiocb: pointer to lpfc command iocb data structure.
6803 * @rspiocb: pointer to lpfc response iocb data structure.
6805 * This routine is the callback function that is put to the fabric iocb's
6806 * callback function pointer (iocb->iocb_cmpl). The original iocb's callback
6807 * function pointer has been stored in iocb->fabric_iocb_cmpl. This callback
6808 * function first restores and invokes the original iocb's callback function
6809 * and then invokes the lpfc_resume_fabric_iocbs() routine to issue the next
6810 * fabric bound iocb from the driver internal fabric iocb list onto the wire.
6813 lpfc_cmpl_fabric_iocb(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
6814 struct lpfc_iocbq *rspiocb)
6818 if ((cmdiocb->iocb_flag & LPFC_IO_FABRIC) != LPFC_IO_FABRIC)
6821 switch (rspiocb->iocb.ulpStatus) {
6822 case IOSTAT_NPORT_RJT:
6823 case IOSTAT_FABRIC_RJT:
6824 if (rspiocb->iocb.un.ulpWord[4] & RJT_UNAVAIL_TEMP) {
6825 lpfc_block_fabric_iocbs(phba);
6829 case IOSTAT_NPORT_BSY:
6830 case IOSTAT_FABRIC_BSY:
6831 lpfc_block_fabric_iocbs(phba);
6835 stat.un.lsRjtError =
6836 be32_to_cpu(rspiocb->iocb.un.ulpWord[4]);
6837 if ((stat.un.b.lsRjtRsnCode == LSRJT_UNABLE_TPC) ||
6838 (stat.un.b.lsRjtRsnCode == LSRJT_LOGICAL_BSY))
6839 lpfc_block_fabric_iocbs(phba);
6843 if (atomic_read(&phba->fabric_iocb_count) == 0)
6846 cmdiocb->iocb_cmpl = cmdiocb->fabric_iocb_cmpl;
6847 cmdiocb->fabric_iocb_cmpl = NULL;
6848 cmdiocb->iocb_flag &= ~LPFC_IO_FABRIC;
6849 cmdiocb->iocb_cmpl(phba, cmdiocb, rspiocb);
6851 atomic_dec(&phba->fabric_iocb_count);
6852 if (!test_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags)) {
6853 /* Post any pending iocbs to HBA */
6854 lpfc_resume_fabric_iocbs(phba);
6859 * lpfc_issue_fabric_iocb - Issue a fabric iocb command
6860 * @phba: pointer to lpfc hba data structure.
6861 * @iocb: pointer to lpfc command iocb data structure.
6863 * This routine is used as the top-level API for issuing a fabric iocb command
6864 * such as FLOGI and FDISC. To accommodate certain switch fabric, this driver
6865 * function makes sure that only one fabric bound iocb will be outstanding at
6866 * any given time. As such, this function will first check to see whether there
6867 * is already an outstanding fabric iocb on the wire. If so, it will put the
6868 * newly issued iocb onto the driver internal fabric iocb list, waiting to be
6869 * issued later. Otherwise, it will issue the iocb on the wire and update the
6870 * fabric iocb count it indicate that there is one fabric iocb on the wire.
6872 * Note, this implementation has a potential sending out fabric IOCBs out of
6873 * order. The problem is caused by the construction of the "ready" boolen does
6874 * not include the condition that the internal fabric IOCB list is empty. As
6875 * such, it is possible a fabric IOCB issued by this routine might be "jump"
6876 * ahead of the fabric IOCBs in the internal list.
6879 * IOCB_SUCCESS - either fabric iocb put on the list or issued successfully
6880 * IOCB_ERROR - failed to issue fabric iocb
6883 lpfc_issue_fabric_iocb(struct lpfc_hba *phba, struct lpfc_iocbq *iocb)
6885 unsigned long iflags;
6889 if (atomic_read(&phba->fabric_iocb_count) > 1)
6892 spin_lock_irqsave(&phba->hbalock, iflags);
6893 ready = atomic_read(&phba->fabric_iocb_count) == 0 &&
6894 !test_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags);
6897 /* Increment fabric iocb count to hold the position */
6898 atomic_inc(&phba->fabric_iocb_count);
6899 spin_unlock_irqrestore(&phba->hbalock, iflags);
6901 iocb->fabric_iocb_cmpl = iocb->iocb_cmpl;
6902 iocb->iocb_cmpl = lpfc_cmpl_fabric_iocb;
6903 iocb->iocb_flag |= LPFC_IO_FABRIC;
6905 lpfc_debugfs_disc_trc(iocb->vport, LPFC_DISC_TRC_ELS_CMD,
6906 "Fabric sched2: ste:x%x",
6907 iocb->vport->port_state, 0, 0);
6909 ret = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, iocb, 0);
6911 if (ret == IOCB_ERROR) {
6912 iocb->iocb_cmpl = iocb->fabric_iocb_cmpl;
6913 iocb->fabric_iocb_cmpl = NULL;
6914 iocb->iocb_flag &= ~LPFC_IO_FABRIC;
6915 atomic_dec(&phba->fabric_iocb_count);
6918 spin_lock_irqsave(&phba->hbalock, iflags);
6919 list_add_tail(&iocb->list, &phba->fabric_iocb_list);
6920 spin_unlock_irqrestore(&phba->hbalock, iflags);
6927 * lpfc_fabric_abort_vport - Abort a vport's iocbs from driver fabric iocb list
6928 * @vport: pointer to a virtual N_Port data structure.
6930 * This routine aborts all the IOCBs associated with a @vport from the
6931 * driver internal fabric IOCB list. The list contains fabric IOCBs to be
6932 * issued to the ELS IOCB ring. This abort function walks the fabric IOCB
6933 * list, removes each IOCB associated with the @vport off the list, set the
6934 * status feild to IOSTAT_LOCAL_REJECT, and invokes the callback function
6935 * associated with the IOCB.
6937 static void lpfc_fabric_abort_vport(struct lpfc_vport *vport)
6939 LIST_HEAD(completions);
6940 struct lpfc_hba *phba = vport->phba;
6941 struct lpfc_iocbq *tmp_iocb, *piocb;
6943 spin_lock_irq(&phba->hbalock);
6944 list_for_each_entry_safe(piocb, tmp_iocb, &phba->fabric_iocb_list,
6947 if (piocb->vport != vport)
6950 list_move_tail(&piocb->list, &completions);
6952 spin_unlock_irq(&phba->hbalock);
6954 /* Cancel all the IOCBs from the completions list */
6955 lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
6960 * lpfc_fabric_abort_nport - Abort a ndlp's iocbs from driver fabric iocb list
6961 * @ndlp: pointer to a node-list data structure.
6963 * This routine aborts all the IOCBs associated with an @ndlp from the
6964 * driver internal fabric IOCB list. The list contains fabric IOCBs to be
6965 * issued to the ELS IOCB ring. This abort function walks the fabric IOCB
6966 * list, removes each IOCB associated with the @ndlp off the list, set the
6967 * status feild to IOSTAT_LOCAL_REJECT, and invokes the callback function
6968 * associated with the IOCB.
6970 void lpfc_fabric_abort_nport(struct lpfc_nodelist *ndlp)
6972 LIST_HEAD(completions);
6973 struct lpfc_hba *phba = ndlp->phba;
6974 struct lpfc_iocbq *tmp_iocb, *piocb;
6975 struct lpfc_sli_ring *pring = &phba->sli.ring[LPFC_ELS_RING];
6977 spin_lock_irq(&phba->hbalock);
6978 list_for_each_entry_safe(piocb, tmp_iocb, &phba->fabric_iocb_list,
6980 if ((lpfc_check_sli_ndlp(phba, pring, piocb, ndlp))) {
6982 list_move_tail(&piocb->list, &completions);
6985 spin_unlock_irq(&phba->hbalock);
6987 /* Cancel all the IOCBs from the completions list */
6988 lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
6993 * lpfc_fabric_abort_hba - Abort all iocbs on driver fabric iocb list
6994 * @phba: pointer to lpfc hba data structure.
6996 * This routine aborts all the IOCBs currently on the driver internal
6997 * fabric IOCB list. The list contains fabric IOCBs to be issued to the ELS
6998 * IOCB ring. This function takes the entire IOCB list off the fabric IOCB
6999 * list, removes IOCBs off the list, set the status feild to
7000 * IOSTAT_LOCAL_REJECT, and invokes the callback function associated with
7003 void lpfc_fabric_abort_hba(struct lpfc_hba *phba)
7005 LIST_HEAD(completions);
7007 spin_lock_irq(&phba->hbalock);
7008 list_splice_init(&phba->fabric_iocb_list, &completions);
7009 spin_unlock_irq(&phba->hbalock);
7011 /* Cancel all the IOCBs from the completions list */
7012 lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
7017 * lpfc_sli4_els_xri_aborted - Slow-path process of els xri abort
7018 * @phba: pointer to lpfc hba data structure.
7019 * @axri: pointer to the els xri abort wcqe structure.
7021 * This routine is invoked by the worker thread to process a SLI4 slow-path
7025 lpfc_sli4_els_xri_aborted(struct lpfc_hba *phba,
7026 struct sli4_wcqe_xri_aborted *axri)
7028 uint16_t xri = bf_get(lpfc_wcqe_xa_xri, axri);
7029 struct lpfc_sglq *sglq_entry = NULL, *sglq_next = NULL;
7030 unsigned long iflag = 0;
7031 struct lpfc_sli_ring *pring = &phba->sli.ring[LPFC_ELS_RING];
7033 spin_lock_irqsave(&phba->hbalock, iflag);
7034 spin_lock(&phba->sli4_hba.abts_sgl_list_lock);
7035 list_for_each_entry_safe(sglq_entry, sglq_next,
7036 &phba->sli4_hba.lpfc_abts_els_sgl_list, list) {
7037 if (sglq_entry->sli4_xritag == xri) {
7038 list_del(&sglq_entry->list);
7039 list_add_tail(&sglq_entry->list,
7040 &phba->sli4_hba.lpfc_sgl_list);
7041 sglq_entry->state = SGL_FREED;
7042 spin_unlock(&phba->sli4_hba.abts_sgl_list_lock);
7043 spin_unlock_irqrestore(&phba->hbalock, iflag);
7045 /* Check if TXQ queue needs to be serviced */
7047 lpfc_worker_wake_up(phba);
7051 spin_unlock(&phba->sli4_hba.abts_sgl_list_lock);
7052 sglq_entry = __lpfc_get_active_sglq(phba, xri);
7053 if (!sglq_entry || (sglq_entry->sli4_xritag != xri)) {
7054 spin_unlock_irqrestore(&phba->hbalock, iflag);
7057 sglq_entry->state = SGL_XRI_ABORTED;
7058 spin_unlock_irqrestore(&phba->hbalock, iflag);