1 /*******************************************************************
2 * This file is part of the Emulex Linux Device Driver for *
3 * Fibre Channel Host Bus Adapters. *
4 * Copyright (C) 2004-2009 Emulex. All rights reserved. *
5 * EMULEX and SLI are trademarks of Emulex. *
7 * Portions Copyright (C) 2004-2005 Christoph Hellwig *
9 * This program is free software; you can redistribute it and/or *
10 * modify it under the terms of version 2 of the GNU General *
11 * Public License as published by the Free Software Foundation. *
12 * This program is distributed in the hope that it will be useful. *
13 * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND *
14 * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, *
15 * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE *
16 * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *
17 * TO BE LEGALLY INVALID. See the GNU General Public License for *
18 * more details, a copy of which can be found in the file COPYING *
19 * included with this package. *
20 *******************************************************************/
21 /* See Fibre Channel protocol T11 FC-LS for details */
22 #include <linux/blkdev.h>
23 #include <linux/pci.h>
24 #include <linux/interrupt.h>
26 #include <scsi/scsi.h>
27 #include <scsi/scsi_device.h>
28 #include <scsi/scsi_host.h>
29 #include <scsi/scsi_transport_fc.h>
34 #include "lpfc_sli4.h"
36 #include "lpfc_disc.h"
37 #include "lpfc_scsi.h"
39 #include "lpfc_logmsg.h"
40 #include "lpfc_crtn.h"
41 #include "lpfc_vport.h"
42 #include "lpfc_debugfs.h"
44 static int lpfc_els_retry(struct lpfc_hba *, struct lpfc_iocbq *,
46 static void lpfc_cmpl_fabric_iocb(struct lpfc_hba *, struct lpfc_iocbq *,
48 static void lpfc_fabric_abort_vport(struct lpfc_vport *vport);
49 static int lpfc_issue_els_fdisc(struct lpfc_vport *vport,
50 struct lpfc_nodelist *ndlp, uint8_t retry);
51 static int lpfc_issue_fabric_iocb(struct lpfc_hba *phba,
52 struct lpfc_iocbq *iocb);
54 static int lpfc_max_els_tries = 3;
57 * lpfc_els_chk_latt - Check host link attention event for a vport
58 * @vport: pointer to a host virtual N_Port data structure.
60 * This routine checks whether there is an outstanding host link
61 * attention event during the discovery process with the @vport. It is done
62 * by reading the HBA's Host Attention (HA) register. If there is any host
63 * link attention events during this @vport's discovery process, the @vport
64 * shall be marked as FC_ABORT_DISCOVERY, a host link attention clear shall
65 * be issued if the link state is not already in host link cleared state,
66 * and a return code shall indicate whether the host link attention event
69 * Note that, if either the host link is in state LPFC_LINK_DOWN or @vport
70 * state in LPFC_VPORT_READY, the request for checking host link attention
71 * event will be ignored and a return code shall indicate no host link
72 * attention event had happened.
75 * 0 - no host link attention event happened
76 * 1 - host link attention event happened
79 lpfc_els_chk_latt(struct lpfc_vport *vport)
81 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
82 struct lpfc_hba *phba = vport->phba;
85 if (vport->port_state >= LPFC_VPORT_READY ||
86 phba->link_state == LPFC_LINK_DOWN ||
87 phba->sli_rev > LPFC_SLI_REV3)
90 /* Read the HBA Host Attention Register */
91 ha_copy = readl(phba->HAregaddr);
93 if (!(ha_copy & HA_LATT))
96 /* Pending Link Event during Discovery */
97 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
98 "0237 Pending Link Event during "
99 "Discovery: State x%x\n",
100 phba->pport->port_state);
102 /* CLEAR_LA should re-enable link attention events and
103 * we should then imediately take a LATT event. The
104 * LATT processing should call lpfc_linkdown() which
105 * will cleanup any left over in-progress discovery
108 spin_lock_irq(shost->host_lock);
109 vport->fc_flag |= FC_ABORT_DISCOVERY;
110 spin_unlock_irq(shost->host_lock);
112 if (phba->link_state != LPFC_CLEAR_LA)
113 lpfc_issue_clear_la(phba, vport);
119 * lpfc_prep_els_iocb - Allocate and prepare a lpfc iocb data structure
120 * @vport: pointer to a host virtual N_Port data structure.
121 * @expectRsp: flag indicating whether response is expected.
122 * @cmdSize: size of the ELS command.
123 * @retry: number of retries to the command IOCB when it fails.
124 * @ndlp: pointer to a node-list data structure.
125 * @did: destination identifier.
126 * @elscmd: the ELS command code.
128 * This routine is used for allocating a lpfc-IOCB data structure from
129 * the driver lpfc-IOCB free-list and prepare the IOCB with the parameters
130 * passed into the routine for discovery state machine to issue an Extended
131 * Link Service (ELS) commands. It is a generic lpfc-IOCB allocation
132 * and preparation routine that is used by all the discovery state machine
133 * routines and the ELS command-specific fields will be later set up by
134 * the individual discovery machine routines after calling this routine
135 * allocating and preparing a generic IOCB data structure. It fills in the
136 * Buffer Descriptor Entries (BDEs), allocates buffers for both command
137 * payload and response payload (if expected). The reference count on the
138 * ndlp is incremented by 1 and the reference to the ndlp is put into
139 * context1 of the IOCB data structure for this IOCB to hold the ndlp
140 * reference for the command's callback function to access later.
143 * Pointer to the newly allocated/prepared els iocb data structure
144 * NULL - when els iocb data structure allocation/preparation failed
147 lpfc_prep_els_iocb(struct lpfc_vport *vport, uint8_t expectRsp,
148 uint16_t cmdSize, uint8_t retry,
149 struct lpfc_nodelist *ndlp, uint32_t did,
152 struct lpfc_hba *phba = vport->phba;
153 struct lpfc_iocbq *elsiocb;
154 struct lpfc_dmabuf *pcmd, *prsp, *pbuflist;
155 struct ulp_bde64 *bpl;
159 if (!lpfc_is_link_up(phba))
162 /* Allocate buffer for command iocb */
163 elsiocb = lpfc_sli_get_iocbq(phba);
169 * If this command is for fabric controller and HBA running
170 * in FIP mode send FLOGI, FDISC and LOGO as FIP frames.
172 if ((did == Fabric_DID) &&
173 (phba->hba_flag & HBA_FIP_SUPPORT) &&
174 ((elscmd == ELS_CMD_FLOGI) ||
175 (elscmd == ELS_CMD_FDISC) ||
176 (elscmd == ELS_CMD_LOGO)))
179 elsiocb->iocb_flag |= ((ELS_ID_FLOGI << LPFC_FIP_ELS_ID_SHIFT)
180 & LPFC_FIP_ELS_ID_MASK);
183 elsiocb->iocb_flag |= ((ELS_ID_FDISC << LPFC_FIP_ELS_ID_SHIFT)
184 & LPFC_FIP_ELS_ID_MASK);
187 elsiocb->iocb_flag |= ((ELS_ID_LOGO << LPFC_FIP_ELS_ID_SHIFT)
188 & LPFC_FIP_ELS_ID_MASK);
192 elsiocb->iocb_flag &= ~LPFC_FIP_ELS_ID_MASK;
194 icmd = &elsiocb->iocb;
196 /* fill in BDEs for command */
197 /* Allocate buffer for command payload */
198 pcmd = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
200 pcmd->virt = lpfc_mbuf_alloc(phba, MEM_PRI, &pcmd->phys);
201 if (!pcmd || !pcmd->virt)
202 goto els_iocb_free_pcmb_exit;
204 INIT_LIST_HEAD(&pcmd->list);
206 /* Allocate buffer for response payload */
208 prsp = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
210 prsp->virt = lpfc_mbuf_alloc(phba, MEM_PRI,
212 if (!prsp || !prsp->virt)
213 goto els_iocb_free_prsp_exit;
214 INIT_LIST_HEAD(&prsp->list);
218 /* Allocate buffer for Buffer ptr list */
219 pbuflist = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
221 pbuflist->virt = lpfc_mbuf_alloc(phba, MEM_PRI,
223 if (!pbuflist || !pbuflist->virt)
224 goto els_iocb_free_pbuf_exit;
226 INIT_LIST_HEAD(&pbuflist->list);
228 icmd->un.elsreq64.bdl.addrHigh = putPaddrHigh(pbuflist->phys);
229 icmd->un.elsreq64.bdl.addrLow = putPaddrLow(pbuflist->phys);
230 icmd->un.elsreq64.bdl.bdeFlags = BUFF_TYPE_BLP_64;
231 icmd->un.elsreq64.remoteID = did; /* DID */
233 icmd->un.elsreq64.bdl.bdeSize = (2 * sizeof(struct ulp_bde64));
234 icmd->ulpCommand = CMD_ELS_REQUEST64_CR;
235 icmd->ulpTimeout = phba->fc_ratov * 2;
237 icmd->un.elsreq64.bdl.bdeSize = sizeof(struct ulp_bde64);
238 icmd->ulpCommand = CMD_XMIT_ELS_RSP64_CX;
240 icmd->ulpBdeCount = 1;
242 icmd->ulpClass = CLASS3;
244 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) {
245 icmd->un.elsreq64.myID = vport->fc_myDID;
247 /* For ELS_REQUEST64_CR, use the VPI by default */
248 icmd->ulpContext = vport->vpi + phba->vpi_base;
250 /* The CT field must be 0=INVALID_RPI for the ECHO cmd */
251 if (elscmd == ELS_CMD_ECHO)
252 icmd->ulpCt_l = 0; /* context = invalid RPI */
254 icmd->ulpCt_l = 1; /* context = VPI */
257 bpl = (struct ulp_bde64 *) pbuflist->virt;
258 bpl->addrLow = le32_to_cpu(putPaddrLow(pcmd->phys));
259 bpl->addrHigh = le32_to_cpu(putPaddrHigh(pcmd->phys));
260 bpl->tus.f.bdeSize = cmdSize;
261 bpl->tus.f.bdeFlags = 0;
262 bpl->tus.w = le32_to_cpu(bpl->tus.w);
266 bpl->addrLow = le32_to_cpu(putPaddrLow(prsp->phys));
267 bpl->addrHigh = le32_to_cpu(putPaddrHigh(prsp->phys));
268 bpl->tus.f.bdeSize = FCELSSIZE;
269 bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64;
270 bpl->tus.w = le32_to_cpu(bpl->tus.w);
273 /* prevent preparing iocb with NULL ndlp reference */
274 elsiocb->context1 = lpfc_nlp_get(ndlp);
275 if (!elsiocb->context1)
276 goto els_iocb_free_pbuf_exit;
277 elsiocb->context2 = pcmd;
278 elsiocb->context3 = pbuflist;
279 elsiocb->retry = retry;
280 elsiocb->vport = vport;
281 elsiocb->drvrTimeout = (phba->fc_ratov << 1) + LPFC_DRVR_TIMEOUT;
284 list_add(&prsp->list, &pcmd->list);
287 /* Xmit ELS command <elsCmd> to remote NPORT <did> */
288 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
289 "0116 Xmit ELS command x%x to remote "
290 "NPORT x%x I/O tag: x%x, port state: x%x\n",
291 elscmd, did, elsiocb->iotag,
294 /* Xmit ELS response <elsCmd> to remote NPORT <did> */
295 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
296 "0117 Xmit ELS response x%x to remote "
297 "NPORT x%x I/O tag: x%x, size: x%x\n",
298 elscmd, ndlp->nlp_DID, elsiocb->iotag,
303 els_iocb_free_pbuf_exit:
305 lpfc_mbuf_free(phba, prsp->virt, prsp->phys);
308 els_iocb_free_prsp_exit:
309 lpfc_mbuf_free(phba, pcmd->virt, pcmd->phys);
312 els_iocb_free_pcmb_exit:
314 lpfc_sli_release_iocbq(phba, elsiocb);
319 * lpfc_issue_fabric_reglogin - Issue fabric registration login for a vport
320 * @vport: pointer to a host virtual N_Port data structure.
322 * This routine issues a fabric registration login for a @vport. An
323 * active ndlp node with Fabric_DID must already exist for this @vport.
324 * The routine invokes two mailbox commands to carry out fabric registration
325 * login through the HBA firmware: the first mailbox command requests the
326 * HBA to perform link configuration for the @vport; and the second mailbox
327 * command requests the HBA to perform the actual fabric registration login
331 * 0 - successfully issued fabric registration login for @vport
332 * -ENXIO -- failed to issue fabric registration login for @vport
335 lpfc_issue_fabric_reglogin(struct lpfc_vport *vport)
337 struct lpfc_hba *phba = vport->phba;
339 struct lpfc_dmabuf *mp;
340 struct lpfc_nodelist *ndlp;
341 struct serv_parm *sp;
345 sp = &phba->fc_fabparam;
346 ndlp = lpfc_findnode_did(vport, Fabric_DID);
347 if (!ndlp || !NLP_CHK_NODE_ACT(ndlp)) {
352 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
358 vport->port_state = LPFC_FABRIC_CFG_LINK;
359 lpfc_config_link(phba, mbox);
360 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
363 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
364 if (rc == MBX_NOT_FINISHED) {
369 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
374 rc = lpfc_reg_rpi(phba, vport->vpi, Fabric_DID, (uint8_t *)sp, mbox, 0);
380 mbox->mbox_cmpl = lpfc_mbx_cmpl_fabric_reg_login;
382 /* increment the reference count on ndlp to hold reference
383 * for the callback routine.
385 mbox->context2 = lpfc_nlp_get(ndlp);
387 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
388 if (rc == MBX_NOT_FINISHED) {
390 goto fail_issue_reg_login;
395 fail_issue_reg_login:
396 /* decrement the reference count on ndlp just incremented
397 * for the failed mbox command.
400 mp = (struct lpfc_dmabuf *) mbox->context1;
401 lpfc_mbuf_free(phba, mp->virt, mp->phys);
404 mempool_free(mbox, phba->mbox_mem_pool);
407 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
408 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
409 "0249 Cannot issue Register Fabric login: Err %d\n", err);
414 * lpfc_issue_reg_vfi - Register VFI for this vport's fabric login
415 * @vport: pointer to a host virtual N_Port data structure.
417 * This routine issues a REG_VFI mailbox for the vfi, vpi, fcfi triplet for
418 * the @vport. This mailbox command is necessary for FCoE only.
421 * 0 - successfully issued REG_VFI for @vport
422 * A failure code otherwise.
425 lpfc_issue_reg_vfi(struct lpfc_vport *vport)
427 struct lpfc_hba *phba = vport->phba;
429 struct lpfc_nodelist *ndlp;
430 struct serv_parm *sp;
431 struct lpfc_dmabuf *dmabuf;
434 sp = &phba->fc_fabparam;
435 ndlp = lpfc_findnode_did(vport, Fabric_DID);
436 if (!ndlp || !NLP_CHK_NODE_ACT(ndlp)) {
441 dmabuf = kzalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
446 dmabuf->virt = lpfc_mbuf_alloc(phba, MEM_PRI, &dmabuf->phys);
449 goto fail_free_dmabuf;
451 mboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
454 goto fail_free_coherent;
456 vport->port_state = LPFC_FABRIC_CFG_LINK;
457 memcpy(dmabuf->virt, &phba->fc_fabparam, sizeof(vport->fc_sparam));
458 lpfc_reg_vfi(mboxq, vport, dmabuf->phys);
459 mboxq->mbox_cmpl = lpfc_mbx_cmpl_reg_vfi;
460 mboxq->vport = vport;
461 mboxq->context1 = dmabuf;
462 rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_NOWAIT);
463 if (rc == MBX_NOT_FINISHED) {
470 mempool_free(mboxq, phba->mbox_mem_pool);
472 lpfc_mbuf_free(phba, dmabuf->virt, dmabuf->phys);
476 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
477 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
478 "0289 Issue Register VFI failed: Err %d\n", rc);
483 * lpfc_cmpl_els_flogi_fabric - Completion function for flogi to a fabric port
484 * @vport: pointer to a host virtual N_Port data structure.
485 * @ndlp: pointer to a node-list data structure.
486 * @sp: pointer to service parameter data structure.
487 * @irsp: pointer to the IOCB within the lpfc response IOCB.
489 * This routine is invoked by the lpfc_cmpl_els_flogi() completion callback
490 * function to handle the completion of a Fabric Login (FLOGI) into a fabric
491 * port in a fabric topology. It properly sets up the parameters to the @ndlp
492 * from the IOCB response. It also check the newly assigned N_Port ID to the
493 * @vport against the previously assigned N_Port ID. If it is different from
494 * the previously assigned Destination ID (DID), the lpfc_unreg_rpi() routine
495 * is invoked on all the remaining nodes with the @vport to unregister the
496 * Remote Port Indicators (RPIs). Finally, the lpfc_issue_fabric_reglogin()
497 * is invoked to register login to the fabric.
500 * 0 - Success (currently, always return 0)
503 lpfc_cmpl_els_flogi_fabric(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
504 struct serv_parm *sp, IOCB_t *irsp)
506 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
507 struct lpfc_hba *phba = vport->phba;
508 struct lpfc_nodelist *np;
509 struct lpfc_nodelist *next_np;
511 spin_lock_irq(shost->host_lock);
512 vport->fc_flag |= FC_FABRIC;
513 spin_unlock_irq(shost->host_lock);
515 phba->fc_edtov = be32_to_cpu(sp->cmn.e_d_tov);
516 if (sp->cmn.edtovResolution) /* E_D_TOV ticks are in nanoseconds */
517 phba->fc_edtov = (phba->fc_edtov + 999999) / 1000000;
519 phba->fc_ratov = (be32_to_cpu(sp->cmn.w2.r_a_tov) + 999) / 1000;
521 if (phba->fc_topology == TOPOLOGY_LOOP) {
522 spin_lock_irq(shost->host_lock);
523 vport->fc_flag |= FC_PUBLIC_LOOP;
524 spin_unlock_irq(shost->host_lock);
527 * If we are a N-port connected to a Fabric, fixup sparam's so
528 * logins to devices on remote loops work.
530 vport->fc_sparam.cmn.altBbCredit = 1;
533 vport->fc_myDID = irsp->un.ulpWord[4] & Mask_DID;
534 memcpy(&ndlp->nlp_portname, &sp->portName, sizeof(struct lpfc_name));
535 memcpy(&ndlp->nlp_nodename, &sp->nodeName, sizeof(struct lpfc_name));
536 ndlp->nlp_class_sup = 0;
537 if (sp->cls1.classValid)
538 ndlp->nlp_class_sup |= FC_COS_CLASS1;
539 if (sp->cls2.classValid)
540 ndlp->nlp_class_sup |= FC_COS_CLASS2;
541 if (sp->cls3.classValid)
542 ndlp->nlp_class_sup |= FC_COS_CLASS3;
543 if (sp->cls4.classValid)
544 ndlp->nlp_class_sup |= FC_COS_CLASS4;
545 ndlp->nlp_maxframe = ((sp->cmn.bbRcvSizeMsb & 0x0F) << 8) |
546 sp->cmn.bbRcvSizeLsb;
547 memcpy(&phba->fc_fabparam, sp, sizeof(struct serv_parm));
549 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) {
550 if (sp->cmn.response_multiple_NPort) {
551 lpfc_printf_vlog(vport, KERN_WARNING,
553 "1816 FLOGI NPIV supported, "
554 "response data 0x%x\n",
555 sp->cmn.response_multiple_NPort);
556 phba->link_flag |= LS_NPIV_FAB_SUPPORTED;
558 /* Because we asked f/w for NPIV it still expects us
559 to call reg_vnpid atleast for the physcial host */
560 lpfc_printf_vlog(vport, KERN_WARNING,
562 "1817 Fabric does not support NPIV "
563 "- configuring single port mode.\n");
564 phba->link_flag &= ~LS_NPIV_FAB_SUPPORTED;
568 if ((vport->fc_prevDID != vport->fc_myDID) &&
569 !(vport->fc_flag & FC_VPORT_NEEDS_REG_VPI)) {
571 /* If our NportID changed, we need to ensure all
572 * remaining NPORTs get unreg_login'ed.
574 list_for_each_entry_safe(np, next_np,
575 &vport->fc_nodes, nlp_listp) {
576 if (!NLP_CHK_NODE_ACT(np))
578 if ((np->nlp_state != NLP_STE_NPR_NODE) ||
579 !(np->nlp_flag & NLP_NPR_ADISC))
581 spin_lock_irq(shost->host_lock);
582 np->nlp_flag &= ~NLP_NPR_ADISC;
583 spin_unlock_irq(shost->host_lock);
584 lpfc_unreg_rpi(vport, np);
586 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) {
587 lpfc_mbx_unreg_vpi(vport);
588 spin_lock_irq(shost->host_lock);
589 vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
590 spin_unlock_irq(shost->host_lock);
593 * If VPI is unreged, driver need to do INIT_VPI
594 * before re-registering
596 if (phba->sli_rev == LPFC_SLI_REV4) {
597 spin_lock_irq(shost->host_lock);
598 vport->fc_flag |= FC_VPORT_NEEDS_INIT_VPI;
599 spin_unlock_irq(shost->host_lock);
603 if (phba->sli_rev < LPFC_SLI_REV4) {
604 lpfc_nlp_set_state(vport, ndlp, NLP_STE_REG_LOGIN_ISSUE);
605 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED &&
606 vport->fc_flag & FC_VPORT_NEEDS_REG_VPI)
607 lpfc_register_new_vport(phba, vport, ndlp);
609 lpfc_issue_fabric_reglogin(vport);
611 ndlp->nlp_type |= NLP_FABRIC;
612 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
613 if ((!(vport->fc_flag & FC_VPORT_NEEDS_REG_VPI)) &&
614 (vport->vpi_state & LPFC_VPI_REGISTERED)) {
615 lpfc_start_fdiscs(phba);
616 lpfc_do_scr_ns_plogi(phba, vport);
617 } else if (vport->fc_flag & FC_VFI_REGISTERED)
618 lpfc_issue_init_vpi(vport);
620 lpfc_issue_reg_vfi(vport);
625 * lpfc_cmpl_els_flogi_nport - Completion function for flogi to an N_Port
626 * @vport: pointer to a host virtual N_Port data structure.
627 * @ndlp: pointer to a node-list data structure.
628 * @sp: pointer to service parameter data structure.
630 * This routine is invoked by the lpfc_cmpl_els_flogi() completion callback
631 * function to handle the completion of a Fabric Login (FLOGI) into an N_Port
632 * in a point-to-point topology. First, the @vport's N_Port Name is compared
633 * with the received N_Port Name: if the @vport's N_Port Name is greater than
634 * the received N_Port Name lexicographically, this node shall assign local
635 * N_Port ID (PT2PT_LocalID: 1) and remote N_Port ID (PT2PT_RemoteID: 2) and
636 * will send out Port Login (PLOGI) with the N_Port IDs assigned. Otherwise,
637 * this node shall just wait for the remote node to issue PLOGI and assign
645 lpfc_cmpl_els_flogi_nport(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
646 struct serv_parm *sp)
648 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
649 struct lpfc_hba *phba = vport->phba;
653 spin_lock_irq(shost->host_lock);
654 vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
655 spin_unlock_irq(shost->host_lock);
657 phba->fc_edtov = FF_DEF_EDTOV;
658 phba->fc_ratov = FF_DEF_RATOV;
659 rc = memcmp(&vport->fc_portname, &sp->portName,
660 sizeof(vport->fc_portname));
662 /* This side will initiate the PLOGI */
663 spin_lock_irq(shost->host_lock);
664 vport->fc_flag |= FC_PT2PT_PLOGI;
665 spin_unlock_irq(shost->host_lock);
668 * N_Port ID cannot be 0, set our to LocalID the other
669 * side will be RemoteID.
674 vport->fc_myDID = PT2PT_LocalID;
676 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
680 lpfc_config_link(phba, mbox);
682 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
684 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
685 if (rc == MBX_NOT_FINISHED) {
686 mempool_free(mbox, phba->mbox_mem_pool);
689 /* Decrement ndlp reference count indicating that ndlp can be
690 * safely released when other references to it are done.
694 ndlp = lpfc_findnode_did(vport, PT2PT_RemoteID);
697 * Cannot find existing Fabric ndlp, so allocate a
700 ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL);
703 lpfc_nlp_init(vport, ndlp, PT2PT_RemoteID);
704 } else if (!NLP_CHK_NODE_ACT(ndlp)) {
705 ndlp = lpfc_enable_node(vport, ndlp,
706 NLP_STE_UNUSED_NODE);
711 memcpy(&ndlp->nlp_portname, &sp->portName,
712 sizeof(struct lpfc_name));
713 memcpy(&ndlp->nlp_nodename, &sp->nodeName,
714 sizeof(struct lpfc_name));
715 /* Set state will put ndlp onto node list if not already done */
716 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
717 spin_lock_irq(shost->host_lock);
718 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
719 spin_unlock_irq(shost->host_lock);
721 /* This side will wait for the PLOGI, decrement ndlp reference
722 * count indicating that ndlp can be released when other
723 * references to it are done.
727 /* If we are pt2pt with another NPort, force NPIV off! */
728 phba->sli3_options &= ~LPFC_SLI3_NPIV_ENABLED;
730 spin_lock_irq(shost->host_lock);
731 vport->fc_flag |= FC_PT2PT;
732 spin_unlock_irq(shost->host_lock);
734 /* Start discovery - this should just do CLEAR_LA */
735 lpfc_disc_start(vport);
742 * lpfc_cmpl_els_flogi - Completion callback function for flogi
743 * @phba: pointer to lpfc hba data structure.
744 * @cmdiocb: pointer to lpfc command iocb data structure.
745 * @rspiocb: pointer to lpfc response iocb data structure.
747 * This routine is the top-level completion callback function for issuing
748 * a Fabric Login (FLOGI) command. If the response IOCB reported error,
749 * the lpfc_els_retry() routine shall be invoked to retry the FLOGI. If
750 * retry has been made (either immediately or delayed with lpfc_els_retry()
751 * returning 1), the command IOCB will be released and function returned.
752 * If the retry attempt has been given up (possibly reach the maximum
753 * number of retries), one additional decrement of ndlp reference shall be
754 * invoked before going out after releasing the command IOCB. This will
755 * actually release the remote node (Note, lpfc_els_free_iocb() will also
756 * invoke one decrement of ndlp reference count). If no error reported in
757 * the IOCB status, the command Port ID field is used to determine whether
758 * this is a point-to-point topology or a fabric topology: if the Port ID
759 * field is assigned, it is a fabric topology; otherwise, it is a
760 * point-to-point topology. The routine lpfc_cmpl_els_flogi_fabric() or
761 * lpfc_cmpl_els_flogi_nport() shall be invoked accordingly to handle the
762 * specific topology completion conditions.
765 lpfc_cmpl_els_flogi(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
766 struct lpfc_iocbq *rspiocb)
768 struct lpfc_vport *vport = cmdiocb->vport;
769 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
770 IOCB_t *irsp = &rspiocb->iocb;
771 struct lpfc_nodelist *ndlp = cmdiocb->context1;
772 struct lpfc_dmabuf *pcmd = cmdiocb->context2, *prsp;
773 struct serv_parm *sp;
776 /* Check to see if link went down during discovery */
777 if (lpfc_els_chk_latt(vport)) {
778 /* One additional decrement on node reference count to
779 * trigger the release of the node
785 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
786 "FLOGI cmpl: status:x%x/x%x state:x%x",
787 irsp->ulpStatus, irsp->un.ulpWord[4],
790 if (irsp->ulpStatus) {
791 /* Check for retry */
792 if (lpfc_els_retry(phba, cmdiocb, rspiocb))
795 /* FLOGI failed, so there is no fabric */
796 spin_lock_irq(shost->host_lock);
797 vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
798 spin_unlock_irq(shost->host_lock);
800 /* If private loop, then allow max outstanding els to be
801 * LPFC_MAX_DISC_THREADS (32). Scanning in the case of no
802 * alpa map would take too long otherwise.
804 if (phba->alpa_map[0] == 0) {
805 vport->cfg_discovery_threads = LPFC_MAX_DISC_THREADS;
809 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
810 "0100 FLOGI failure Status:x%x/x%x TMO:x%x\n",
811 irsp->ulpStatus, irsp->un.ulpWord[4],
815 spin_lock_irq(shost->host_lock);
816 vport->fc_flag &= ~FC_VPORT_CVL_RCVD;
817 spin_unlock_irq(shost->host_lock);
820 * The FLogI succeeded. Sync the data for the CPU before
823 prsp = list_get_first(&pcmd->list, struct lpfc_dmabuf, list);
825 sp = prsp->virt + sizeof(uint32_t);
827 /* FLOGI completes successfully */
828 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
829 "0101 FLOGI completes successfully "
830 "Data: x%x x%x x%x x%x\n",
831 irsp->un.ulpWord[4], sp->cmn.e_d_tov,
832 sp->cmn.w2.r_a_tov, sp->cmn.edtovResolution);
834 if (vport->port_state == LPFC_FLOGI) {
836 * If Common Service Parameters indicate Nport
837 * we are point to point, if Fport we are Fabric.
840 rc = lpfc_cmpl_els_flogi_fabric(vport, ndlp, sp, irsp);
842 rc = lpfc_cmpl_els_flogi_nport(vport, ndlp, sp);
851 if (!lpfc_error_lost_link(irsp)) {
852 /* FLOGI failed, so just use loop map to make discovery list */
853 lpfc_disc_list_loopmap(vport);
855 /* Start discovery */
856 lpfc_disc_start(vport);
857 } else if (((irsp->ulpStatus != IOSTAT_LOCAL_REJECT) ||
858 ((irsp->un.ulpWord[4] != IOERR_SLI_ABORTED) &&
859 (irsp->un.ulpWord[4] != IOERR_SLI_DOWN))) &&
860 (phba->link_state != LPFC_CLEAR_LA)) {
861 /* If FLOGI failed enable link interrupt. */
862 lpfc_issue_clear_la(phba, vport);
865 lpfc_els_free_iocb(phba, cmdiocb);
869 * lpfc_issue_els_flogi - Issue an flogi iocb command for a vport
870 * @vport: pointer to a host virtual N_Port data structure.
871 * @ndlp: pointer to a node-list data structure.
872 * @retry: number of retries to the command IOCB.
874 * This routine issues a Fabric Login (FLOGI) Request ELS command
875 * for a @vport. The initiator service parameters are put into the payload
876 * of the FLOGI Request IOCB and the top-level callback function pointer
877 * to lpfc_cmpl_els_flogi() routine is put to the IOCB completion callback
878 * function field. The lpfc_issue_fabric_iocb routine is invoked to send
879 * out FLOGI ELS command with one outstanding fabric IOCB at a time.
881 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
882 * will be incremented by 1 for holding the ndlp and the reference to ndlp
883 * will be stored into the context1 field of the IOCB for the completion
884 * callback function to the FLOGI ELS command.
887 * 0 - successfully issued flogi iocb for @vport
888 * 1 - failed to issue flogi iocb for @vport
891 lpfc_issue_els_flogi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
894 struct lpfc_hba *phba = vport->phba;
895 struct serv_parm *sp;
897 struct lpfc_iocbq *elsiocb;
898 struct lpfc_sli_ring *pring;
904 pring = &phba->sli.ring[LPFC_ELS_RING];
906 cmdsize = (sizeof(uint32_t) + sizeof(struct serv_parm));
907 elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp,
908 ndlp->nlp_DID, ELS_CMD_FLOGI);
913 icmd = &elsiocb->iocb;
914 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
916 /* For FLOGI request, remainder of payload is service parameters */
917 *((uint32_t *) (pcmd)) = ELS_CMD_FLOGI;
918 pcmd += sizeof(uint32_t);
919 memcpy(pcmd, &vport->fc_sparam, sizeof(struct serv_parm));
920 sp = (struct serv_parm *) pcmd;
922 /* Setup CSPs accordingly for Fabric */
924 sp->cmn.w2.r_a_tov = 0;
925 sp->cls1.classValid = 0;
926 sp->cls2.seqDelivery = 1;
927 sp->cls3.seqDelivery = 1;
928 if (sp->cmn.fcphLow < FC_PH3)
929 sp->cmn.fcphLow = FC_PH3;
930 if (sp->cmn.fcphHigh < FC_PH3)
931 sp->cmn.fcphHigh = FC_PH3;
933 if (phba->sli_rev == LPFC_SLI_REV4) {
934 elsiocb->iocb.ulpCt_h = ((SLI4_CT_FCFI >> 1) & 1);
935 elsiocb->iocb.ulpCt_l = (SLI4_CT_FCFI & 1);
936 /* FLOGI needs to be 3 for WQE FCFI */
937 /* Set the fcfi to the fcfi we registered with */
938 elsiocb->iocb.ulpContext = phba->fcf.fcfi;
939 } else if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) {
940 sp->cmn.request_multiple_Nport = 1;
941 /* For FLOGI, Let FLOGI rsp set the NPortID for VPI 0 */
946 if (phba->fc_topology != TOPOLOGY_LOOP) {
947 icmd->un.elsreq64.myID = 0;
948 icmd->un.elsreq64.fl = 1;
951 tmo = phba->fc_ratov;
952 phba->fc_ratov = LPFC_DISC_FLOGI_TMO;
953 lpfc_set_disctmo(vport);
954 phba->fc_ratov = tmo;
956 phba->fc_stat.elsXmitFLOGI++;
957 elsiocb->iocb_cmpl = lpfc_cmpl_els_flogi;
959 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
960 "Issue FLOGI: opt:x%x",
961 phba->sli3_options, 0, 0);
963 rc = lpfc_issue_fabric_iocb(phba, elsiocb);
964 if (rc == IOCB_ERROR) {
965 lpfc_els_free_iocb(phba, elsiocb);
972 * lpfc_els_abort_flogi - Abort all outstanding flogi iocbs
973 * @phba: pointer to lpfc hba data structure.
975 * This routine aborts all the outstanding Fabric Login (FLOGI) IOCBs
976 * with a @phba. This routine walks all the outstanding IOCBs on the txcmplq
977 * list and issues an abort IOCB commond on each outstanding IOCB that
978 * contains a active Fabric_DID ndlp. Note that this function is to issue
979 * the abort IOCB command on all the outstanding IOCBs, thus when this
980 * function returns, it does not guarantee all the IOCBs are actually aborted.
983 * 0 - Sucessfully issued abort iocb on all outstanding flogis (Always 0)
986 lpfc_els_abort_flogi(struct lpfc_hba *phba)
988 struct lpfc_sli_ring *pring;
989 struct lpfc_iocbq *iocb, *next_iocb;
990 struct lpfc_nodelist *ndlp;
993 /* Abort outstanding I/O on NPort <nlp_DID> */
994 lpfc_printf_log(phba, KERN_INFO, LOG_DISCOVERY,
995 "0201 Abort outstanding I/O on NPort x%x\n",
998 pring = &phba->sli.ring[LPFC_ELS_RING];
1001 * Check the txcmplq for an iocb that matches the nport the driver is
1004 spin_lock_irq(&phba->hbalock);
1005 list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) {
1007 if (icmd->ulpCommand == CMD_ELS_REQUEST64_CR &&
1008 icmd->un.elsreq64.bdl.ulpIoTag32) {
1009 ndlp = (struct lpfc_nodelist *)(iocb->context1);
1010 if (ndlp && NLP_CHK_NODE_ACT(ndlp) &&
1011 (ndlp->nlp_DID == Fabric_DID))
1012 lpfc_sli_issue_abort_iotag(phba, pring, iocb);
1015 spin_unlock_irq(&phba->hbalock);
1021 * lpfc_initial_flogi - Issue an initial fabric login for a vport
1022 * @vport: pointer to a host virtual N_Port data structure.
1024 * This routine issues an initial Fabric Login (FLOGI) for the @vport
1025 * specified. It first searches the ndlp with the Fabric_DID (0xfffffe) from
1026 * the @vport's ndlp list. If no such ndlp found, it will create an ndlp and
1027 * put it into the @vport's ndlp list. If an inactive ndlp found on the list,
1028 * it will just be enabled and made active. The lpfc_issue_els_flogi() routine
1029 * is then invoked with the @vport and the ndlp to perform the FLOGI for the
1033 * 0 - failed to issue initial flogi for @vport
1034 * 1 - successfully issued initial flogi for @vport
1037 lpfc_initial_flogi(struct lpfc_vport *vport)
1039 struct lpfc_hba *phba = vport->phba;
1040 struct lpfc_nodelist *ndlp;
1042 vport->port_state = LPFC_FLOGI;
1043 lpfc_set_disctmo(vport);
1045 /* First look for the Fabric ndlp */
1046 ndlp = lpfc_findnode_did(vport, Fabric_DID);
1048 /* Cannot find existing Fabric ndlp, so allocate a new one */
1049 ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL);
1052 lpfc_nlp_init(vport, ndlp, Fabric_DID);
1053 /* Set the node type */
1054 ndlp->nlp_type |= NLP_FABRIC;
1055 /* Put ndlp onto node list */
1056 lpfc_enqueue_node(vport, ndlp);
1057 } else if (!NLP_CHK_NODE_ACT(ndlp)) {
1058 /* re-setup ndlp without removing from node list */
1059 ndlp = lpfc_enable_node(vport, ndlp, NLP_STE_UNUSED_NODE);
1064 if (lpfc_issue_els_flogi(vport, ndlp, 0))
1065 /* This decrement of reference count to node shall kick off
1066 * the release of the node.
1074 * lpfc_initial_fdisc - Issue an initial fabric discovery for a vport
1075 * @vport: pointer to a host virtual N_Port data structure.
1077 * This routine issues an initial Fabric Discover (FDISC) for the @vport
1078 * specified. It first searches the ndlp with the Fabric_DID (0xfffffe) from
1079 * the @vport's ndlp list. If no such ndlp found, it will create an ndlp and
1080 * put it into the @vport's ndlp list. If an inactive ndlp found on the list,
1081 * it will just be enabled and made active. The lpfc_issue_els_fdisc() routine
1082 * is then invoked with the @vport and the ndlp to perform the FDISC for the
1086 * 0 - failed to issue initial fdisc for @vport
1087 * 1 - successfully issued initial fdisc for @vport
1090 lpfc_initial_fdisc(struct lpfc_vport *vport)
1092 struct lpfc_hba *phba = vport->phba;
1093 struct lpfc_nodelist *ndlp;
1095 /* First look for the Fabric ndlp */
1096 ndlp = lpfc_findnode_did(vport, Fabric_DID);
1098 /* Cannot find existing Fabric ndlp, so allocate a new one */
1099 ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL);
1102 lpfc_nlp_init(vport, ndlp, Fabric_DID);
1103 /* Put ndlp onto node list */
1104 lpfc_enqueue_node(vport, ndlp);
1105 } else if (!NLP_CHK_NODE_ACT(ndlp)) {
1106 /* re-setup ndlp without removing from node list */
1107 ndlp = lpfc_enable_node(vport, ndlp, NLP_STE_UNUSED_NODE);
1112 if (lpfc_issue_els_fdisc(vport, ndlp, 0)) {
1113 /* decrement node reference count to trigger the release of
1123 * lpfc_more_plogi - Check and issue remaining plogis for a vport
1124 * @vport: pointer to a host virtual N_Port data structure.
1126 * This routine checks whether there are more remaining Port Logins
1127 * (PLOGI) to be issued for the @vport. If so, it will invoke the routine
1128 * lpfc_els_disc_plogi() to go through the Node Port Recovery (NPR) nodes
1129 * to issue ELS PLOGIs up to the configured discover threads with the
1130 * @vport (@vport->cfg_discovery_threads). The function also decrement
1131 * the @vport's num_disc_node by 1 if it is not already 0.
1134 lpfc_more_plogi(struct lpfc_vport *vport)
1138 if (vport->num_disc_nodes)
1139 vport->num_disc_nodes--;
1141 /* Continue discovery with <num_disc_nodes> PLOGIs to go */
1142 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
1143 "0232 Continue discovery with %d PLOGIs to go "
1144 "Data: x%x x%x x%x\n",
1145 vport->num_disc_nodes, vport->fc_plogi_cnt,
1146 vport->fc_flag, vport->port_state);
1147 /* Check to see if there are more PLOGIs to be sent */
1148 if (vport->fc_flag & FC_NLP_MORE)
1149 /* go thru NPR nodes and issue any remaining ELS PLOGIs */
1150 sentplogi = lpfc_els_disc_plogi(vport);
1156 * lpfc_plogi_confirm_nport - Confirm pologi wwpn matches stored ndlp
1157 * @phba: pointer to lpfc hba data structure.
1158 * @prsp: pointer to response IOCB payload.
1159 * @ndlp: pointer to a node-list data structure.
1161 * This routine checks and indicates whether the WWPN of an N_Port, retrieved
1162 * from a PLOGI, matches the WWPN that is stored in the @ndlp for that N_POrt.
1163 * The following cases are considered N_Port confirmed:
1164 * 1) The N_Port is a Fabric ndlp; 2) The @ndlp is on vport list and matches
1165 * the WWPN of the N_Port logged into; 3) The @ndlp is not on vport list but
1166 * it does not have WWPN assigned either. If the WWPN is confirmed, the
1167 * pointer to the @ndlp will be returned. If the WWPN is not confirmed:
1168 * 1) if there is a node on vport list other than the @ndlp with the same
1169 * WWPN of the N_Port PLOGI logged into, the lpfc_unreg_rpi() will be invoked
1170 * on that node to release the RPI associated with the node; 2) if there is
1171 * no node found on vport list with the same WWPN of the N_Port PLOGI logged
1172 * into, a new node shall be allocated (or activated). In either case, the
1173 * parameters of the @ndlp shall be copied to the new_ndlp, the @ndlp shall
1174 * be released and the new_ndlp shall be put on to the vport node list and
1175 * its pointer returned as the confirmed node.
1177 * Note that before the @ndlp got "released", the keepDID from not-matching
1178 * or inactive "new_ndlp" on the vport node list is assigned to the nlp_DID
1179 * of the @ndlp. This is because the release of @ndlp is actually to put it
1180 * into an inactive state on the vport node list and the vport node list
1181 * management algorithm does not allow two node with a same DID.
1184 * pointer to the PLOGI N_Port @ndlp
1186 static struct lpfc_nodelist *
1187 lpfc_plogi_confirm_nport(struct lpfc_hba *phba, uint32_t *prsp,
1188 struct lpfc_nodelist *ndlp)
1190 struct lpfc_vport *vport = ndlp->vport;
1191 struct lpfc_nodelist *new_ndlp;
1192 struct lpfc_rport_data *rdata;
1193 struct fc_rport *rport;
1194 struct serv_parm *sp;
1195 uint8_t name[sizeof(struct lpfc_name)];
1196 uint32_t rc, keepDID = 0;
1198 /* Fabric nodes can have the same WWPN so we don't bother searching
1199 * by WWPN. Just return the ndlp that was given to us.
1201 if (ndlp->nlp_type & NLP_FABRIC)
1204 sp = (struct serv_parm *) ((uint8_t *) prsp + sizeof(uint32_t));
1205 memset(name, 0, sizeof(struct lpfc_name));
1207 /* Now we find out if the NPort we are logging into, matches the WWPN
1208 * we have for that ndlp. If not, we have some work to do.
1210 new_ndlp = lpfc_findnode_wwpn(vport, &sp->portName);
1212 if (new_ndlp == ndlp && NLP_CHK_NODE_ACT(new_ndlp))
1216 rc = memcmp(&ndlp->nlp_portname, name,
1217 sizeof(struct lpfc_name));
1220 new_ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_ATOMIC);
1223 lpfc_nlp_init(vport, new_ndlp, ndlp->nlp_DID);
1224 } else if (!NLP_CHK_NODE_ACT(new_ndlp)) {
1225 rc = memcmp(&ndlp->nlp_portname, name,
1226 sizeof(struct lpfc_name));
1229 new_ndlp = lpfc_enable_node(vport, new_ndlp,
1230 NLP_STE_UNUSED_NODE);
1233 keepDID = new_ndlp->nlp_DID;
1235 keepDID = new_ndlp->nlp_DID;
1237 lpfc_unreg_rpi(vport, new_ndlp);
1238 new_ndlp->nlp_DID = ndlp->nlp_DID;
1239 new_ndlp->nlp_prev_state = ndlp->nlp_prev_state;
1241 if (ndlp->nlp_flag & NLP_NPR_2B_DISC)
1242 new_ndlp->nlp_flag |= NLP_NPR_2B_DISC;
1243 ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
1245 /* Set state will put new_ndlp on to node list if not already done */
1246 lpfc_nlp_set_state(vport, new_ndlp, ndlp->nlp_state);
1248 /* Move this back to NPR state */
1249 if (memcmp(&ndlp->nlp_portname, name, sizeof(struct lpfc_name)) == 0) {
1250 /* The new_ndlp is replacing ndlp totally, so we need
1251 * to put ndlp on UNUSED list and try to free it.
1254 /* Fix up the rport accordingly */
1255 rport = ndlp->rport;
1257 rdata = rport->dd_data;
1258 if (rdata->pnode == ndlp) {
1261 rdata->pnode = lpfc_nlp_get(new_ndlp);
1262 new_ndlp->rport = rport;
1264 new_ndlp->nlp_type = ndlp->nlp_type;
1266 /* We shall actually free the ndlp with both nlp_DID and
1267 * nlp_portname fields equals 0 to avoid any ndlp on the
1268 * nodelist never to be used.
1270 if (ndlp->nlp_DID == 0) {
1271 spin_lock_irq(&phba->ndlp_lock);
1272 NLP_SET_FREE_REQ(ndlp);
1273 spin_unlock_irq(&phba->ndlp_lock);
1276 /* Two ndlps cannot have the same did on the nodelist */
1277 ndlp->nlp_DID = keepDID;
1278 lpfc_drop_node(vport, ndlp);
1281 lpfc_unreg_rpi(vport, ndlp);
1282 /* Two ndlps cannot have the same did */
1283 ndlp->nlp_DID = keepDID;
1284 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1290 * lpfc_end_rscn - Check and handle more rscn for a vport
1291 * @vport: pointer to a host virtual N_Port data structure.
1293 * This routine checks whether more Registration State Change
1294 * Notifications (RSCNs) came in while the discovery state machine was in
1295 * the FC_RSCN_MODE. If so, the lpfc_els_handle_rscn() routine will be
1296 * invoked to handle the additional RSCNs for the @vport. Otherwise, the
1297 * FC_RSCN_MODE bit will be cleared with the @vport to mark as the end of
1298 * handling the RSCNs.
1301 lpfc_end_rscn(struct lpfc_vport *vport)
1303 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1305 if (vport->fc_flag & FC_RSCN_MODE) {
1307 * Check to see if more RSCNs came in while we were
1308 * processing this one.
1310 if (vport->fc_rscn_id_cnt ||
1311 (vport->fc_flag & FC_RSCN_DISCOVERY) != 0)
1312 lpfc_els_handle_rscn(vport);
1314 spin_lock_irq(shost->host_lock);
1315 vport->fc_flag &= ~FC_RSCN_MODE;
1316 spin_unlock_irq(shost->host_lock);
1322 * lpfc_cmpl_els_plogi - Completion callback function for plogi
1323 * @phba: pointer to lpfc hba data structure.
1324 * @cmdiocb: pointer to lpfc command iocb data structure.
1325 * @rspiocb: pointer to lpfc response iocb data structure.
1327 * This routine is the completion callback function for issuing the Port
1328 * Login (PLOGI) command. For PLOGI completion, there must be an active
1329 * ndlp on the vport node list that matches the remote node ID from the
1330 * PLOGI reponse IOCB. If such ndlp does not exist, the PLOGI is simply
1331 * ignored and command IOCB released. The PLOGI response IOCB status is
1332 * checked for error conditons. If there is error status reported, PLOGI
1333 * retry shall be attempted by invoking the lpfc_els_retry() routine.
1334 * Otherwise, the lpfc_plogi_confirm_nport() routine shall be invoked on
1335 * the ndlp and the NLP_EVT_CMPL_PLOGI state to the Discover State Machine
1336 * (DSM) is set for this PLOGI completion. Finally, it checks whether
1337 * there are additional N_Port nodes with the vport that need to perform
1338 * PLOGI. If so, the lpfc_more_plogi() routine is invoked to issue addition
1342 lpfc_cmpl_els_plogi(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
1343 struct lpfc_iocbq *rspiocb)
1345 struct lpfc_vport *vport = cmdiocb->vport;
1346 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1348 struct lpfc_nodelist *ndlp;
1349 struct lpfc_dmabuf *prsp;
1350 int disc, rc, did, type;
1352 /* we pass cmdiocb to state machine which needs rspiocb as well */
1353 cmdiocb->context_un.rsp_iocb = rspiocb;
1355 irsp = &rspiocb->iocb;
1356 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
1357 "PLOGI cmpl: status:x%x/x%x did:x%x",
1358 irsp->ulpStatus, irsp->un.ulpWord[4],
1359 irsp->un.elsreq64.remoteID);
1361 ndlp = lpfc_findnode_did(vport, irsp->un.elsreq64.remoteID);
1362 if (!ndlp || !NLP_CHK_NODE_ACT(ndlp)) {
1363 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1364 "0136 PLOGI completes to NPort x%x "
1365 "with no ndlp. Data: x%x x%x x%x\n",
1366 irsp->un.elsreq64.remoteID,
1367 irsp->ulpStatus, irsp->un.ulpWord[4],
1372 /* Since ndlp can be freed in the disc state machine, note if this node
1373 * is being used during discovery.
1375 spin_lock_irq(shost->host_lock);
1376 disc = (ndlp->nlp_flag & NLP_NPR_2B_DISC);
1377 ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
1378 spin_unlock_irq(shost->host_lock);
1381 /* PLOGI completes to NPort <nlp_DID> */
1382 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
1383 "0102 PLOGI completes to NPort x%x "
1384 "Data: x%x x%x x%x x%x x%x\n",
1385 ndlp->nlp_DID, irsp->ulpStatus, irsp->un.ulpWord[4],
1386 irsp->ulpTimeout, disc, vport->num_disc_nodes);
1387 /* Check to see if link went down during discovery */
1388 if (lpfc_els_chk_latt(vport)) {
1389 spin_lock_irq(shost->host_lock);
1390 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
1391 spin_unlock_irq(shost->host_lock);
1395 /* ndlp could be freed in DSM, save these values now */
1396 type = ndlp->nlp_type;
1397 did = ndlp->nlp_DID;
1399 if (irsp->ulpStatus) {
1400 /* Check for retry */
1401 if (lpfc_els_retry(phba, cmdiocb, rspiocb)) {
1402 /* ELS command is being retried */
1404 spin_lock_irq(shost->host_lock);
1405 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
1406 spin_unlock_irq(shost->host_lock);
1411 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1412 "2753 PLOGI failure DID:%06X Status:x%x/x%x\n",
1413 ndlp->nlp_DID, irsp->ulpStatus,
1414 irsp->un.ulpWord[4]);
1415 /* Do not call DSM for lpfc_els_abort'ed ELS cmds */
1416 if (lpfc_error_lost_link(irsp))
1417 rc = NLP_STE_FREED_NODE;
1419 rc = lpfc_disc_state_machine(vport, ndlp, cmdiocb,
1420 NLP_EVT_CMPL_PLOGI);
1422 /* Good status, call state machine */
1423 prsp = list_entry(((struct lpfc_dmabuf *)
1424 cmdiocb->context2)->list.next,
1425 struct lpfc_dmabuf, list);
1426 ndlp = lpfc_plogi_confirm_nport(phba, prsp->virt, ndlp);
1427 rc = lpfc_disc_state_machine(vport, ndlp, cmdiocb,
1428 NLP_EVT_CMPL_PLOGI);
1431 if (disc && vport->num_disc_nodes) {
1432 /* Check to see if there are more PLOGIs to be sent */
1433 lpfc_more_plogi(vport);
1435 if (vport->num_disc_nodes == 0) {
1436 spin_lock_irq(shost->host_lock);
1437 vport->fc_flag &= ~FC_NDISC_ACTIVE;
1438 spin_unlock_irq(shost->host_lock);
1440 lpfc_can_disctmo(vport);
1441 lpfc_end_rscn(vport);
1446 lpfc_els_free_iocb(phba, cmdiocb);
1451 * lpfc_issue_els_plogi - Issue an plogi iocb command for a vport
1452 * @vport: pointer to a host virtual N_Port data structure.
1453 * @did: destination port identifier.
1454 * @retry: number of retries to the command IOCB.
1456 * This routine issues a Port Login (PLOGI) command to a remote N_Port
1457 * (with the @did) for a @vport. Before issuing a PLOGI to a remote N_Port,
1458 * the ndlp with the remote N_Port DID must exist on the @vport's ndlp list.
1459 * This routine constructs the proper feilds of the PLOGI IOCB and invokes
1460 * the lpfc_sli_issue_iocb() routine to send out PLOGI ELS command.
1462 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
1463 * will be incremented by 1 for holding the ndlp and the reference to ndlp
1464 * will be stored into the context1 field of the IOCB for the completion
1465 * callback function to the PLOGI ELS command.
1468 * 0 - Successfully issued a plogi for @vport
1469 * 1 - failed to issue a plogi for @vport
1472 lpfc_issue_els_plogi(struct lpfc_vport *vport, uint32_t did, uint8_t retry)
1474 struct lpfc_hba *phba = vport->phba;
1475 struct serv_parm *sp;
1477 struct lpfc_nodelist *ndlp;
1478 struct lpfc_iocbq *elsiocb;
1479 struct lpfc_sli *psli;
1486 ndlp = lpfc_findnode_did(vport, did);
1487 if (ndlp && !NLP_CHK_NODE_ACT(ndlp))
1490 /* If ndlp is not NULL, we will bump the reference count on it */
1491 cmdsize = (sizeof(uint32_t) + sizeof(struct serv_parm));
1492 elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp, did,
1497 icmd = &elsiocb->iocb;
1498 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
1500 /* For PLOGI request, remainder of payload is service parameters */
1501 *((uint32_t *) (pcmd)) = ELS_CMD_PLOGI;
1502 pcmd += sizeof(uint32_t);
1503 memcpy(pcmd, &vport->fc_sparam, sizeof(struct serv_parm));
1504 sp = (struct serv_parm *) pcmd;
1506 if (sp->cmn.fcphLow < FC_PH_4_3)
1507 sp->cmn.fcphLow = FC_PH_4_3;
1509 if (sp->cmn.fcphHigh < FC_PH3)
1510 sp->cmn.fcphHigh = FC_PH3;
1512 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
1513 "Issue PLOGI: did:x%x",
1516 phba->fc_stat.elsXmitPLOGI++;
1517 elsiocb->iocb_cmpl = lpfc_cmpl_els_plogi;
1518 ret = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
1520 if (ret == IOCB_ERROR) {
1521 lpfc_els_free_iocb(phba, elsiocb);
1528 * lpfc_cmpl_els_prli - Completion callback function for prli
1529 * @phba: pointer to lpfc hba data structure.
1530 * @cmdiocb: pointer to lpfc command iocb data structure.
1531 * @rspiocb: pointer to lpfc response iocb data structure.
1533 * This routine is the completion callback function for a Process Login
1534 * (PRLI) ELS command. The PRLI response IOCB status is checked for error
1535 * status. If there is error status reported, PRLI retry shall be attempted
1536 * by invoking the lpfc_els_retry() routine. Otherwise, the state
1537 * NLP_EVT_CMPL_PRLI is sent to the Discover State Machine (DSM) for this
1538 * ndlp to mark the PRLI completion.
1541 lpfc_cmpl_els_prli(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
1542 struct lpfc_iocbq *rspiocb)
1544 struct lpfc_vport *vport = cmdiocb->vport;
1545 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1547 struct lpfc_sli *psli;
1548 struct lpfc_nodelist *ndlp;
1551 /* we pass cmdiocb to state machine which needs rspiocb as well */
1552 cmdiocb->context_un.rsp_iocb = rspiocb;
1554 irsp = &(rspiocb->iocb);
1555 ndlp = (struct lpfc_nodelist *) cmdiocb->context1;
1556 spin_lock_irq(shost->host_lock);
1557 ndlp->nlp_flag &= ~NLP_PRLI_SND;
1558 spin_unlock_irq(shost->host_lock);
1560 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
1561 "PRLI cmpl: status:x%x/x%x did:x%x",
1562 irsp->ulpStatus, irsp->un.ulpWord[4],
1564 /* PRLI completes to NPort <nlp_DID> */
1565 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
1566 "0103 PRLI completes to NPort x%x "
1567 "Data: x%x x%x x%x x%x\n",
1568 ndlp->nlp_DID, irsp->ulpStatus, irsp->un.ulpWord[4],
1569 irsp->ulpTimeout, vport->num_disc_nodes);
1571 vport->fc_prli_sent--;
1572 /* Check to see if link went down during discovery */
1573 if (lpfc_els_chk_latt(vport))
1576 if (irsp->ulpStatus) {
1577 /* Check for retry */
1578 if (lpfc_els_retry(phba, cmdiocb, rspiocb)) {
1579 /* ELS command is being retried */
1583 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1584 "2754 PRLI failure DID:%06X Status:x%x/x%x\n",
1585 ndlp->nlp_DID, irsp->ulpStatus,
1586 irsp->un.ulpWord[4]);
1587 /* Do not call DSM for lpfc_els_abort'ed ELS cmds */
1588 if (lpfc_error_lost_link(irsp))
1591 lpfc_disc_state_machine(vport, ndlp, cmdiocb,
1594 /* Good status, call state machine */
1595 lpfc_disc_state_machine(vport, ndlp, cmdiocb,
1598 lpfc_els_free_iocb(phba, cmdiocb);
1603 * lpfc_issue_els_prli - Issue a prli iocb command for a vport
1604 * @vport: pointer to a host virtual N_Port data structure.
1605 * @ndlp: pointer to a node-list data structure.
1606 * @retry: number of retries to the command IOCB.
1608 * This routine issues a Process Login (PRLI) ELS command for the
1609 * @vport. The PRLI service parameters are set up in the payload of the
1610 * PRLI Request command and the pointer to lpfc_cmpl_els_prli() routine
1611 * is put to the IOCB completion callback func field before invoking the
1612 * routine lpfc_sli_issue_iocb() to send out PRLI command.
1614 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
1615 * will be incremented by 1 for holding the ndlp and the reference to ndlp
1616 * will be stored into the context1 field of the IOCB for the completion
1617 * callback function to the PRLI ELS command.
1620 * 0 - successfully issued prli iocb command for @vport
1621 * 1 - failed to issue prli iocb command for @vport
1624 lpfc_issue_els_prli(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1627 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1628 struct lpfc_hba *phba = vport->phba;
1631 struct lpfc_iocbq *elsiocb;
1635 cmdsize = (sizeof(uint32_t) + sizeof(PRLI));
1636 elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp,
1637 ndlp->nlp_DID, ELS_CMD_PRLI);
1641 icmd = &elsiocb->iocb;
1642 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
1644 /* For PRLI request, remainder of payload is service parameters */
1645 memset(pcmd, 0, (sizeof(PRLI) + sizeof(uint32_t)));
1646 *((uint32_t *) (pcmd)) = ELS_CMD_PRLI;
1647 pcmd += sizeof(uint32_t);
1649 /* For PRLI, remainder of payload is PRLI parameter page */
1650 npr = (PRLI *) pcmd;
1652 * If our firmware version is 3.20 or later,
1653 * set the following bits for FC-TAPE support.
1655 if (phba->vpd.rev.feaLevelHigh >= 0x02) {
1656 npr->ConfmComplAllowed = 1;
1658 npr->TaskRetryIdReq = 1;
1660 npr->estabImagePair = 1;
1661 npr->readXferRdyDis = 1;
1663 /* For FCP support */
1664 npr->prliType = PRLI_FCP_TYPE;
1665 npr->initiatorFunc = 1;
1667 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
1668 "Issue PRLI: did:x%x",
1669 ndlp->nlp_DID, 0, 0);
1671 phba->fc_stat.elsXmitPRLI++;
1672 elsiocb->iocb_cmpl = lpfc_cmpl_els_prli;
1673 spin_lock_irq(shost->host_lock);
1674 ndlp->nlp_flag |= NLP_PRLI_SND;
1675 spin_unlock_irq(shost->host_lock);
1676 if (lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0) ==
1678 spin_lock_irq(shost->host_lock);
1679 ndlp->nlp_flag &= ~NLP_PRLI_SND;
1680 spin_unlock_irq(shost->host_lock);
1681 lpfc_els_free_iocb(phba, elsiocb);
1684 vport->fc_prli_sent++;
1689 * lpfc_rscn_disc - Perform rscn discovery for a vport
1690 * @vport: pointer to a host virtual N_Port data structure.
1692 * This routine performs Registration State Change Notification (RSCN)
1693 * discovery for a @vport. If the @vport's node port recovery count is not
1694 * zero, it will invoke the lpfc_els_disc_plogi() to perform PLOGI for all
1695 * the nodes that need recovery. If none of the PLOGI were needed through
1696 * the lpfc_els_disc_plogi() routine, the lpfc_end_rscn() routine shall be
1697 * invoked to check and handle possible more RSCN came in during the period
1698 * of processing the current ones.
1701 lpfc_rscn_disc(struct lpfc_vport *vport)
1703 lpfc_can_disctmo(vport);
1705 /* RSCN discovery */
1706 /* go thru NPR nodes and issue ELS PLOGIs */
1707 if (vport->fc_npr_cnt)
1708 if (lpfc_els_disc_plogi(vport))
1711 lpfc_end_rscn(vport);
1715 * lpfc_adisc_done - Complete the adisc phase of discovery
1716 * @vport: pointer to lpfc_vport hba data structure that finished all ADISCs.
1718 * This function is called when the final ADISC is completed during discovery.
1719 * This function handles clearing link attention or issuing reg_vpi depending
1720 * on whether npiv is enabled. This function also kicks off the PLOGI phase of
1722 * This function is called with no locks held.
1725 lpfc_adisc_done(struct lpfc_vport *vport)
1727 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1728 struct lpfc_hba *phba = vport->phba;
1731 * For NPIV, cmpl_reg_vpi will set port_state to READY,
1732 * and continue discovery.
1734 if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
1735 !(vport->fc_flag & FC_RSCN_MODE) &&
1736 (phba->sli_rev < LPFC_SLI_REV4)) {
1737 lpfc_issue_reg_vpi(phba, vport);
1741 * For SLI2, we need to set port_state to READY
1742 * and continue discovery.
1744 if (vport->port_state < LPFC_VPORT_READY) {
1745 /* If we get here, there is nothing to ADISC */
1746 if (vport->port_type == LPFC_PHYSICAL_PORT)
1747 lpfc_issue_clear_la(phba, vport);
1748 if (!(vport->fc_flag & FC_ABORT_DISCOVERY)) {
1749 vport->num_disc_nodes = 0;
1750 /* go thru NPR list, issue ELS PLOGIs */
1751 if (vport->fc_npr_cnt)
1752 lpfc_els_disc_plogi(vport);
1753 if (!vport->num_disc_nodes) {
1754 spin_lock_irq(shost->host_lock);
1755 vport->fc_flag &= ~FC_NDISC_ACTIVE;
1756 spin_unlock_irq(shost->host_lock);
1757 lpfc_can_disctmo(vport);
1758 lpfc_end_rscn(vport);
1761 vport->port_state = LPFC_VPORT_READY;
1763 lpfc_rscn_disc(vport);
1767 * lpfc_more_adisc - Issue more adisc as needed
1768 * @vport: pointer to a host virtual N_Port data structure.
1770 * This routine determines whether there are more ndlps on a @vport
1771 * node list need to have Address Discover (ADISC) issued. If so, it will
1772 * invoke the lpfc_els_disc_adisc() routine to issue ADISC on the @vport's
1773 * remaining nodes which need to have ADISC sent.
1776 lpfc_more_adisc(struct lpfc_vport *vport)
1780 if (vport->num_disc_nodes)
1781 vport->num_disc_nodes--;
1782 /* Continue discovery with <num_disc_nodes> ADISCs to go */
1783 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
1784 "0210 Continue discovery with %d ADISCs to go "
1785 "Data: x%x x%x x%x\n",
1786 vport->num_disc_nodes, vport->fc_adisc_cnt,
1787 vport->fc_flag, vport->port_state);
1788 /* Check to see if there are more ADISCs to be sent */
1789 if (vport->fc_flag & FC_NLP_MORE) {
1790 lpfc_set_disctmo(vport);
1791 /* go thru NPR nodes and issue any remaining ELS ADISCs */
1792 sentadisc = lpfc_els_disc_adisc(vport);
1794 if (!vport->num_disc_nodes)
1795 lpfc_adisc_done(vport);
1800 * lpfc_cmpl_els_adisc - Completion callback function for adisc
1801 * @phba: pointer to lpfc hba data structure.
1802 * @cmdiocb: pointer to lpfc command iocb data structure.
1803 * @rspiocb: pointer to lpfc response iocb data structure.
1805 * This routine is the completion function for issuing the Address Discover
1806 * (ADISC) command. It first checks to see whether link went down during
1807 * the discovery process. If so, the node will be marked as node port
1808 * recovery for issuing discover IOCB by the link attention handler and
1809 * exit. Otherwise, the response status is checked. If error was reported
1810 * in the response status, the ADISC command shall be retried by invoking
1811 * the lpfc_els_retry() routine. Otherwise, if no error was reported in
1812 * the response status, the state machine is invoked to set transition
1813 * with respect to NLP_EVT_CMPL_ADISC event.
1816 lpfc_cmpl_els_adisc(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
1817 struct lpfc_iocbq *rspiocb)
1819 struct lpfc_vport *vport = cmdiocb->vport;
1820 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1822 struct lpfc_nodelist *ndlp;
1825 /* we pass cmdiocb to state machine which needs rspiocb as well */
1826 cmdiocb->context_un.rsp_iocb = rspiocb;
1828 irsp = &(rspiocb->iocb);
1829 ndlp = (struct lpfc_nodelist *) cmdiocb->context1;
1831 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
1832 "ADISC cmpl: status:x%x/x%x did:x%x",
1833 irsp->ulpStatus, irsp->un.ulpWord[4],
1836 /* Since ndlp can be freed in the disc state machine, note if this node
1837 * is being used during discovery.
1839 spin_lock_irq(shost->host_lock);
1840 disc = (ndlp->nlp_flag & NLP_NPR_2B_DISC);
1841 ndlp->nlp_flag &= ~(NLP_ADISC_SND | NLP_NPR_2B_DISC);
1842 spin_unlock_irq(shost->host_lock);
1843 /* ADISC completes to NPort <nlp_DID> */
1844 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
1845 "0104 ADISC completes to NPort x%x "
1846 "Data: x%x x%x x%x x%x x%x\n",
1847 ndlp->nlp_DID, irsp->ulpStatus, irsp->un.ulpWord[4],
1848 irsp->ulpTimeout, disc, vport->num_disc_nodes);
1849 /* Check to see if link went down during discovery */
1850 if (lpfc_els_chk_latt(vport)) {
1851 spin_lock_irq(shost->host_lock);
1852 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
1853 spin_unlock_irq(shost->host_lock);
1857 if (irsp->ulpStatus) {
1858 /* Check for retry */
1859 if (lpfc_els_retry(phba, cmdiocb, rspiocb)) {
1860 /* ELS command is being retried */
1862 spin_lock_irq(shost->host_lock);
1863 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
1864 spin_unlock_irq(shost->host_lock);
1865 lpfc_set_disctmo(vport);
1870 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1871 "2755 ADISC failure DID:%06X Status:x%x/x%x\n",
1872 ndlp->nlp_DID, irsp->ulpStatus,
1873 irsp->un.ulpWord[4]);
1874 /* Do not call DSM for lpfc_els_abort'ed ELS cmds */
1875 if (!lpfc_error_lost_link(irsp))
1876 lpfc_disc_state_machine(vport, ndlp, cmdiocb,
1877 NLP_EVT_CMPL_ADISC);
1879 /* Good status, call state machine */
1880 lpfc_disc_state_machine(vport, ndlp, cmdiocb,
1881 NLP_EVT_CMPL_ADISC);
1883 /* Check to see if there are more ADISCs to be sent */
1884 if (disc && vport->num_disc_nodes)
1885 lpfc_more_adisc(vport);
1887 lpfc_els_free_iocb(phba, cmdiocb);
1892 * lpfc_issue_els_adisc - Issue an address discover iocb to an node on a vport
1893 * @vport: pointer to a virtual N_Port data structure.
1894 * @ndlp: pointer to a node-list data structure.
1895 * @retry: number of retries to the command IOCB.
1897 * This routine issues an Address Discover (ADISC) for an @ndlp on a
1898 * @vport. It prepares the payload of the ADISC ELS command, updates the
1899 * and states of the ndlp, and invokes the lpfc_sli_issue_iocb() routine
1900 * to issue the ADISC ELS command.
1902 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
1903 * will be incremented by 1 for holding the ndlp and the reference to ndlp
1904 * will be stored into the context1 field of the IOCB for the completion
1905 * callback function to the ADISC ELS command.
1908 * 0 - successfully issued adisc
1909 * 1 - failed to issue adisc
1912 lpfc_issue_els_adisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1915 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1916 struct lpfc_hba *phba = vport->phba;
1919 struct lpfc_iocbq *elsiocb;
1923 cmdsize = (sizeof(uint32_t) + sizeof(ADISC));
1924 elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp,
1925 ndlp->nlp_DID, ELS_CMD_ADISC);
1929 icmd = &elsiocb->iocb;
1930 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
1932 /* For ADISC request, remainder of payload is service parameters */
1933 *((uint32_t *) (pcmd)) = ELS_CMD_ADISC;
1934 pcmd += sizeof(uint32_t);
1936 /* Fill in ADISC payload */
1937 ap = (ADISC *) pcmd;
1938 ap->hardAL_PA = phba->fc_pref_ALPA;
1939 memcpy(&ap->portName, &vport->fc_portname, sizeof(struct lpfc_name));
1940 memcpy(&ap->nodeName, &vport->fc_nodename, sizeof(struct lpfc_name));
1941 ap->DID = be32_to_cpu(vport->fc_myDID);
1943 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
1944 "Issue ADISC: did:x%x",
1945 ndlp->nlp_DID, 0, 0);
1947 phba->fc_stat.elsXmitADISC++;
1948 elsiocb->iocb_cmpl = lpfc_cmpl_els_adisc;
1949 spin_lock_irq(shost->host_lock);
1950 ndlp->nlp_flag |= NLP_ADISC_SND;
1951 spin_unlock_irq(shost->host_lock);
1952 if (lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0) ==
1954 spin_lock_irq(shost->host_lock);
1955 ndlp->nlp_flag &= ~NLP_ADISC_SND;
1956 spin_unlock_irq(shost->host_lock);
1957 lpfc_els_free_iocb(phba, elsiocb);
1964 * lpfc_cmpl_els_logo - Completion callback function for logo
1965 * @phba: pointer to lpfc hba data structure.
1966 * @cmdiocb: pointer to lpfc command iocb data structure.
1967 * @rspiocb: pointer to lpfc response iocb data structure.
1969 * This routine is the completion function for issuing the ELS Logout (LOGO)
1970 * command. If no error status was reported from the LOGO response, the
1971 * state machine of the associated ndlp shall be invoked for transition with
1972 * respect to NLP_EVT_CMPL_LOGO event. Otherwise, if error status was reported,
1973 * the lpfc_els_retry() routine will be invoked to retry the LOGO command.
1976 lpfc_cmpl_els_logo(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
1977 struct lpfc_iocbq *rspiocb)
1979 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) cmdiocb->context1;
1980 struct lpfc_vport *vport = ndlp->vport;
1981 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1983 struct lpfc_sli *psli;
1986 /* we pass cmdiocb to state machine which needs rspiocb as well */
1987 cmdiocb->context_un.rsp_iocb = rspiocb;
1989 irsp = &(rspiocb->iocb);
1990 spin_lock_irq(shost->host_lock);
1991 ndlp->nlp_flag &= ~NLP_LOGO_SND;
1992 spin_unlock_irq(shost->host_lock);
1994 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
1995 "LOGO cmpl: status:x%x/x%x did:x%x",
1996 irsp->ulpStatus, irsp->un.ulpWord[4],
1998 /* LOGO completes to NPort <nlp_DID> */
1999 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
2000 "0105 LOGO completes to NPort x%x "
2001 "Data: x%x x%x x%x x%x\n",
2002 ndlp->nlp_DID, irsp->ulpStatus, irsp->un.ulpWord[4],
2003 irsp->ulpTimeout, vport->num_disc_nodes);
2004 /* Check to see if link went down during discovery */
2005 if (lpfc_els_chk_latt(vport))
2008 if (ndlp->nlp_flag & NLP_TARGET_REMOVE) {
2009 /* NLP_EVT_DEVICE_RM should unregister the RPI
2010 * which should abort all outstanding IOs.
2012 lpfc_disc_state_machine(vport, ndlp, cmdiocb,
2017 if (irsp->ulpStatus) {
2018 /* Check for retry */
2019 if (lpfc_els_retry(phba, cmdiocb, rspiocb))
2020 /* ELS command is being retried */
2023 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
2024 "2756 LOGO failure DID:%06X Status:x%x/x%x\n",
2025 ndlp->nlp_DID, irsp->ulpStatus,
2026 irsp->un.ulpWord[4]);
2027 /* Do not call DSM for lpfc_els_abort'ed ELS cmds */
2028 if (lpfc_error_lost_link(irsp))
2031 lpfc_disc_state_machine(vport, ndlp, cmdiocb,
2034 /* Good status, call state machine.
2035 * This will unregister the rpi if needed.
2037 lpfc_disc_state_machine(vport, ndlp, cmdiocb,
2040 lpfc_els_free_iocb(phba, cmdiocb);
2045 * lpfc_issue_els_logo - Issue a logo to an node on a vport
2046 * @vport: pointer to a virtual N_Port data structure.
2047 * @ndlp: pointer to a node-list data structure.
2048 * @retry: number of retries to the command IOCB.
2050 * This routine constructs and issues an ELS Logout (LOGO) iocb command
2051 * to a remote node, referred by an @ndlp on a @vport. It constructs the
2052 * payload of the IOCB, properly sets up the @ndlp state, and invokes the
2053 * lpfc_sli_issue_iocb() routine to send out the LOGO ELS command.
2055 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
2056 * will be incremented by 1 for holding the ndlp and the reference to ndlp
2057 * will be stored into the context1 field of the IOCB for the completion
2058 * callback function to the LOGO ELS command.
2061 * 0 - successfully issued logo
2062 * 1 - failed to issue logo
2065 lpfc_issue_els_logo(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2068 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2069 struct lpfc_hba *phba = vport->phba;
2071 struct lpfc_iocbq *elsiocb;
2076 spin_lock_irq(shost->host_lock);
2077 if (ndlp->nlp_flag & NLP_LOGO_SND) {
2078 spin_unlock_irq(shost->host_lock);
2081 spin_unlock_irq(shost->host_lock);
2083 cmdsize = (2 * sizeof(uint32_t)) + sizeof(struct lpfc_name);
2084 elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp,
2085 ndlp->nlp_DID, ELS_CMD_LOGO);
2089 icmd = &elsiocb->iocb;
2090 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
2091 *((uint32_t *) (pcmd)) = ELS_CMD_LOGO;
2092 pcmd += sizeof(uint32_t);
2094 /* Fill in LOGO payload */
2095 *((uint32_t *) (pcmd)) = be32_to_cpu(vport->fc_myDID);
2096 pcmd += sizeof(uint32_t);
2097 memcpy(pcmd, &vport->fc_portname, sizeof(struct lpfc_name));
2099 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
2100 "Issue LOGO: did:x%x",
2101 ndlp->nlp_DID, 0, 0);
2103 phba->fc_stat.elsXmitLOGO++;
2104 elsiocb->iocb_cmpl = lpfc_cmpl_els_logo;
2105 spin_lock_irq(shost->host_lock);
2106 ndlp->nlp_flag |= NLP_LOGO_SND;
2107 spin_unlock_irq(shost->host_lock);
2108 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
2110 if (rc == IOCB_ERROR) {
2111 spin_lock_irq(shost->host_lock);
2112 ndlp->nlp_flag &= ~NLP_LOGO_SND;
2113 spin_unlock_irq(shost->host_lock);
2114 lpfc_els_free_iocb(phba, elsiocb);
2121 * lpfc_cmpl_els_cmd - Completion callback function for generic els command
2122 * @phba: pointer to lpfc hba data structure.
2123 * @cmdiocb: pointer to lpfc command iocb data structure.
2124 * @rspiocb: pointer to lpfc response iocb data structure.
2126 * This routine is a generic completion callback function for ELS commands.
2127 * Specifically, it is the callback function which does not need to perform
2128 * any command specific operations. It is currently used by the ELS command
2129 * issuing routines for the ELS State Change Request (SCR),
2130 * lpfc_issue_els_scr(), and the ELS Fibre Channel Address Resolution
2131 * Protocol Response (FARPR) routine, lpfc_issue_els_farpr(). Other than
2132 * certain debug loggings, this callback function simply invokes the
2133 * lpfc_els_chk_latt() routine to check whether link went down during the
2134 * discovery process.
2137 lpfc_cmpl_els_cmd(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
2138 struct lpfc_iocbq *rspiocb)
2140 struct lpfc_vport *vport = cmdiocb->vport;
2143 irsp = &rspiocb->iocb;
2145 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
2146 "ELS cmd cmpl: status:x%x/x%x did:x%x",
2147 irsp->ulpStatus, irsp->un.ulpWord[4],
2148 irsp->un.elsreq64.remoteID);
2149 /* ELS cmd tag <ulpIoTag> completes */
2150 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
2151 "0106 ELS cmd tag x%x completes Data: x%x x%x x%x\n",
2152 irsp->ulpIoTag, irsp->ulpStatus,
2153 irsp->un.ulpWord[4], irsp->ulpTimeout);
2154 /* Check to see if link went down during discovery */
2155 lpfc_els_chk_latt(vport);
2156 lpfc_els_free_iocb(phba, cmdiocb);
2161 * lpfc_issue_els_scr - Issue a scr to an node on a vport
2162 * @vport: pointer to a host virtual N_Port data structure.
2163 * @nportid: N_Port identifier to the remote node.
2164 * @retry: number of retries to the command IOCB.
2166 * This routine issues a State Change Request (SCR) to a fabric node
2167 * on a @vport. The remote node @nportid is passed into the function. It
2168 * first search the @vport node list to find the matching ndlp. If no such
2169 * ndlp is found, a new ndlp shall be created for this (SCR) purpose. An
2170 * IOCB is allocated, payload prepared, and the lpfc_sli_issue_iocb()
2171 * routine is invoked to send the SCR IOCB.
2173 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
2174 * will be incremented by 1 for holding the ndlp and the reference to ndlp
2175 * will be stored into the context1 field of the IOCB for the completion
2176 * callback function to the SCR ELS command.
2179 * 0 - Successfully issued scr command
2180 * 1 - Failed to issue scr command
2183 lpfc_issue_els_scr(struct lpfc_vport *vport, uint32_t nportid, uint8_t retry)
2185 struct lpfc_hba *phba = vport->phba;
2187 struct lpfc_iocbq *elsiocb;
2188 struct lpfc_sli *psli;
2191 struct lpfc_nodelist *ndlp;
2194 cmdsize = (sizeof(uint32_t) + sizeof(SCR));
2196 ndlp = lpfc_findnode_did(vport, nportid);
2198 ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL);
2201 lpfc_nlp_init(vport, ndlp, nportid);
2202 lpfc_enqueue_node(vport, ndlp);
2203 } else if (!NLP_CHK_NODE_ACT(ndlp)) {
2204 ndlp = lpfc_enable_node(vport, ndlp, NLP_STE_UNUSED_NODE);
2209 elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp,
2210 ndlp->nlp_DID, ELS_CMD_SCR);
2213 /* This will trigger the release of the node just
2220 icmd = &elsiocb->iocb;
2221 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
2223 *((uint32_t *) (pcmd)) = ELS_CMD_SCR;
2224 pcmd += sizeof(uint32_t);
2226 /* For SCR, remainder of payload is SCR parameter page */
2227 memset(pcmd, 0, sizeof(SCR));
2228 ((SCR *) pcmd)->Function = SCR_FUNC_FULL;
2230 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
2231 "Issue SCR: did:x%x",
2232 ndlp->nlp_DID, 0, 0);
2234 phba->fc_stat.elsXmitSCR++;
2235 elsiocb->iocb_cmpl = lpfc_cmpl_els_cmd;
2236 if (lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0) ==
2238 /* The additional lpfc_nlp_put will cause the following
2239 * lpfc_els_free_iocb routine to trigger the rlease of
2243 lpfc_els_free_iocb(phba, elsiocb);
2246 /* This will cause the callback-function lpfc_cmpl_els_cmd to
2247 * trigger the release of node.
2254 * lpfc_issue_els_farpr - Issue a farp to an node on a vport
2255 * @vport: pointer to a host virtual N_Port data structure.
2256 * @nportid: N_Port identifier to the remote node.
2257 * @retry: number of retries to the command IOCB.
2259 * This routine issues a Fibre Channel Address Resolution Response
2260 * (FARPR) to a node on a vport. The remote node N_Port identifier (@nportid)
2261 * is passed into the function. It first search the @vport node list to find
2262 * the matching ndlp. If no such ndlp is found, a new ndlp shall be created
2263 * for this (FARPR) purpose. An IOCB is allocated, payload prepared, and the
2264 * lpfc_sli_issue_iocb() routine is invoked to send the FARPR ELS command.
2266 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
2267 * will be incremented by 1 for holding the ndlp and the reference to ndlp
2268 * will be stored into the context1 field of the IOCB for the completion
2269 * callback function to the PARPR ELS command.
2272 * 0 - Successfully issued farpr command
2273 * 1 - Failed to issue farpr command
2276 lpfc_issue_els_farpr(struct lpfc_vport *vport, uint32_t nportid, uint8_t retry)
2278 struct lpfc_hba *phba = vport->phba;
2280 struct lpfc_iocbq *elsiocb;
2281 struct lpfc_sli *psli;
2286 struct lpfc_nodelist *ondlp;
2287 struct lpfc_nodelist *ndlp;
2290 cmdsize = (sizeof(uint32_t) + sizeof(FARP));
2292 ndlp = lpfc_findnode_did(vport, nportid);
2294 ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL);
2297 lpfc_nlp_init(vport, ndlp, nportid);
2298 lpfc_enqueue_node(vport, ndlp);
2299 } else if (!NLP_CHK_NODE_ACT(ndlp)) {
2300 ndlp = lpfc_enable_node(vport, ndlp, NLP_STE_UNUSED_NODE);
2305 elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp,
2306 ndlp->nlp_DID, ELS_CMD_RNID);
2308 /* This will trigger the release of the node just
2315 icmd = &elsiocb->iocb;
2316 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
2318 *((uint32_t *) (pcmd)) = ELS_CMD_FARPR;
2319 pcmd += sizeof(uint32_t);
2321 /* Fill in FARPR payload */
2322 fp = (FARP *) (pcmd);
2323 memset(fp, 0, sizeof(FARP));
2324 lp = (uint32_t *) pcmd;
2325 *lp++ = be32_to_cpu(nportid);
2326 *lp++ = be32_to_cpu(vport->fc_myDID);
2328 fp->Mflags = (FARP_MATCH_PORT | FARP_MATCH_NODE);
2330 memcpy(&fp->RportName, &vport->fc_portname, sizeof(struct lpfc_name));
2331 memcpy(&fp->RnodeName, &vport->fc_nodename, sizeof(struct lpfc_name));
2332 ondlp = lpfc_findnode_did(vport, nportid);
2333 if (ondlp && NLP_CHK_NODE_ACT(ondlp)) {
2334 memcpy(&fp->OportName, &ondlp->nlp_portname,
2335 sizeof(struct lpfc_name));
2336 memcpy(&fp->OnodeName, &ondlp->nlp_nodename,
2337 sizeof(struct lpfc_name));
2340 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
2341 "Issue FARPR: did:x%x",
2342 ndlp->nlp_DID, 0, 0);
2344 phba->fc_stat.elsXmitFARPR++;
2345 elsiocb->iocb_cmpl = lpfc_cmpl_els_cmd;
2346 if (lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0) ==
2348 /* The additional lpfc_nlp_put will cause the following
2349 * lpfc_els_free_iocb routine to trigger the release of
2353 lpfc_els_free_iocb(phba, elsiocb);
2356 /* This will cause the callback-function lpfc_cmpl_els_cmd to
2357 * trigger the release of the node.
2364 * lpfc_cancel_retry_delay_tmo - Cancel the timer with delayed iocb-cmd retry
2365 * @vport: pointer to a host virtual N_Port data structure.
2366 * @nlp: pointer to a node-list data structure.
2368 * This routine cancels the timer with a delayed IOCB-command retry for
2369 * a @vport's @ndlp. It stops the timer for the delayed function retrial and
2370 * removes the ELS retry event if it presents. In addition, if the
2371 * NLP_NPR_2B_DISC bit is set in the @nlp's nlp_flag bitmap, ADISC IOCB
2372 * commands are sent for the @vport's nodes that require issuing discovery
2376 lpfc_cancel_retry_delay_tmo(struct lpfc_vport *vport, struct lpfc_nodelist *nlp)
2378 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2379 struct lpfc_work_evt *evtp;
2381 if (!(nlp->nlp_flag & NLP_DELAY_TMO))
2383 spin_lock_irq(shost->host_lock);
2384 nlp->nlp_flag &= ~NLP_DELAY_TMO;
2385 spin_unlock_irq(shost->host_lock);
2386 del_timer_sync(&nlp->nlp_delayfunc);
2387 nlp->nlp_last_elscmd = 0;
2388 if (!list_empty(&nlp->els_retry_evt.evt_listp)) {
2389 list_del_init(&nlp->els_retry_evt.evt_listp);
2390 /* Decrement nlp reference count held for the delayed retry */
2391 evtp = &nlp->els_retry_evt;
2392 lpfc_nlp_put((struct lpfc_nodelist *)evtp->evt_arg1);
2394 if (nlp->nlp_flag & NLP_NPR_2B_DISC) {
2395 spin_lock_irq(shost->host_lock);
2396 nlp->nlp_flag &= ~NLP_NPR_2B_DISC;
2397 spin_unlock_irq(shost->host_lock);
2398 if (vport->num_disc_nodes) {
2399 if (vport->port_state < LPFC_VPORT_READY) {
2400 /* Check if there are more ADISCs to be sent */
2401 lpfc_more_adisc(vport);
2403 /* Check if there are more PLOGIs to be sent */
2404 lpfc_more_plogi(vport);
2405 if (vport->num_disc_nodes == 0) {
2406 spin_lock_irq(shost->host_lock);
2407 vport->fc_flag &= ~FC_NDISC_ACTIVE;
2408 spin_unlock_irq(shost->host_lock);
2409 lpfc_can_disctmo(vport);
2410 lpfc_end_rscn(vport);
2419 * lpfc_els_retry_delay - Timer function with a ndlp delayed function timer
2420 * @ptr: holder for the pointer to the timer function associated data (ndlp).
2422 * This routine is invoked by the ndlp delayed-function timer to check
2423 * whether there is any pending ELS retry event(s) with the node. If not, it
2424 * simply returns. Otherwise, if there is at least one ELS delayed event, it
2425 * adds the delayed events to the HBA work list and invokes the
2426 * lpfc_worker_wake_up() routine to wake up worker thread to process the
2427 * event. Note that lpfc_nlp_get() is called before posting the event to
2428 * the work list to hold reference count of ndlp so that it guarantees the
2429 * reference to ndlp will still be available when the worker thread gets
2430 * to the event associated with the ndlp.
2433 lpfc_els_retry_delay(unsigned long ptr)
2435 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) ptr;
2436 struct lpfc_vport *vport = ndlp->vport;
2437 struct lpfc_hba *phba = vport->phba;
2438 unsigned long flags;
2439 struct lpfc_work_evt *evtp = &ndlp->els_retry_evt;
2441 spin_lock_irqsave(&phba->hbalock, flags);
2442 if (!list_empty(&evtp->evt_listp)) {
2443 spin_unlock_irqrestore(&phba->hbalock, flags);
2447 /* We need to hold the node by incrementing the reference
2448 * count until the queued work is done
2450 evtp->evt_arg1 = lpfc_nlp_get(ndlp);
2451 if (evtp->evt_arg1) {
2452 evtp->evt = LPFC_EVT_ELS_RETRY;
2453 list_add_tail(&evtp->evt_listp, &phba->work_list);
2454 lpfc_worker_wake_up(phba);
2456 spin_unlock_irqrestore(&phba->hbalock, flags);
2461 * lpfc_els_retry_delay_handler - Work thread handler for ndlp delayed function
2462 * @ndlp: pointer to a node-list data structure.
2464 * This routine is the worker-thread handler for processing the @ndlp delayed
2465 * event(s), posted by the lpfc_els_retry_delay() routine. It simply retrieves
2466 * the last ELS command from the associated ndlp and invokes the proper ELS
2467 * function according to the delayed ELS command to retry the command.
2470 lpfc_els_retry_delay_handler(struct lpfc_nodelist *ndlp)
2472 struct lpfc_vport *vport = ndlp->vport;
2473 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2474 uint32_t cmd, did, retry;
2476 spin_lock_irq(shost->host_lock);
2477 did = ndlp->nlp_DID;
2478 cmd = ndlp->nlp_last_elscmd;
2479 ndlp->nlp_last_elscmd = 0;
2481 if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
2482 spin_unlock_irq(shost->host_lock);
2486 ndlp->nlp_flag &= ~NLP_DELAY_TMO;
2487 spin_unlock_irq(shost->host_lock);
2489 * If a discovery event readded nlp_delayfunc after timer
2490 * firing and before processing the timer, cancel the
2493 del_timer_sync(&ndlp->nlp_delayfunc);
2494 retry = ndlp->nlp_retry;
2495 ndlp->nlp_retry = 0;
2499 lpfc_issue_els_flogi(vport, ndlp, retry);
2502 if (!lpfc_issue_els_plogi(vport, ndlp->nlp_DID, retry)) {
2503 ndlp->nlp_prev_state = ndlp->nlp_state;
2504 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
2508 if (!lpfc_issue_els_adisc(vport, ndlp, retry)) {
2509 ndlp->nlp_prev_state = ndlp->nlp_state;
2510 lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
2514 if (!lpfc_issue_els_prli(vport, ndlp, retry)) {
2515 ndlp->nlp_prev_state = ndlp->nlp_state;
2516 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PRLI_ISSUE);
2520 if (!lpfc_issue_els_logo(vport, ndlp, retry)) {
2521 ndlp->nlp_prev_state = ndlp->nlp_state;
2522 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2526 lpfc_issue_els_fdisc(vport, ndlp, retry);
2533 * lpfc_els_retry - Make retry decision on an els command iocb
2534 * @phba: pointer to lpfc hba data structure.
2535 * @cmdiocb: pointer to lpfc command iocb data structure.
2536 * @rspiocb: pointer to lpfc response iocb data structure.
2538 * This routine makes a retry decision on an ELS command IOCB, which has
2539 * failed. The following ELS IOCBs use this function for retrying the command
2540 * when previously issued command responsed with error status: FLOGI, PLOGI,
2541 * PRLI, ADISC, LOGO, and FDISC. Based on the ELS command type and the
2542 * returned error status, it makes the decision whether a retry shall be
2543 * issued for the command, and whether a retry shall be made immediately or
2544 * delayed. In the former case, the corresponding ELS command issuing-function
2545 * is called to retry the command. In the later case, the ELS command shall
2546 * be posted to the ndlp delayed event and delayed function timer set to the
2547 * ndlp for the delayed command issusing.
2550 * 0 - No retry of els command is made
2551 * 1 - Immediate or delayed retry of els command is made
2554 lpfc_els_retry(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
2555 struct lpfc_iocbq *rspiocb)
2557 struct lpfc_vport *vport = cmdiocb->vport;
2558 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2559 IOCB_t *irsp = &rspiocb->iocb;
2560 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) cmdiocb->context1;
2561 struct lpfc_dmabuf *pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
2564 int retry = 0, maxretry = lpfc_max_els_tries, delay = 0;
2570 /* Note: context2 may be 0 for internal driver abort
2571 * of delays ELS command.
2574 if (pcmd && pcmd->virt) {
2575 elscmd = (uint32_t *) (pcmd->virt);
2579 if (ndlp && NLP_CHK_NODE_ACT(ndlp))
2580 did = ndlp->nlp_DID;
2582 /* We should only hit this case for retrying PLOGI */
2583 did = irsp->un.elsreq64.remoteID;
2584 ndlp = lpfc_findnode_did(vport, did);
2585 if ((!ndlp || !NLP_CHK_NODE_ACT(ndlp))
2586 && (cmd != ELS_CMD_PLOGI))
2590 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
2591 "Retry ELS: wd7:x%x wd4:x%x did:x%x",
2592 *(((uint32_t *) irsp) + 7), irsp->un.ulpWord[4], ndlp->nlp_DID);
2594 switch (irsp->ulpStatus) {
2595 case IOSTAT_FCP_RSP_ERROR:
2596 case IOSTAT_REMOTE_STOP:
2599 case IOSTAT_LOCAL_REJECT:
2600 switch ((irsp->un.ulpWord[4] & 0xff)) {
2601 case IOERR_LOOP_OPEN_FAILURE:
2602 if (cmd == ELS_CMD_FLOGI) {
2603 if (PCI_DEVICE_ID_HORNET ==
2604 phba->pcidev->device) {
2605 phba->fc_topology = TOPOLOGY_LOOP;
2606 phba->pport->fc_myDID = 0;
2607 phba->alpa_map[0] = 0;
2608 phba->alpa_map[1] = 0;
2611 if (cmd == ELS_CMD_PLOGI && cmdiocb->retry == 0)
2616 case IOERR_ILLEGAL_COMMAND:
2617 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
2618 "0124 Retry illegal cmd x%x "
2619 "retry:x%x delay:x%x\n",
2620 cmd, cmdiocb->retry, delay);
2622 /* All command's retry policy */
2624 if (cmdiocb->retry > 2)
2628 case IOERR_NO_RESOURCES:
2629 logerr = 1; /* HBA out of resources */
2631 if (cmdiocb->retry > 100)
2636 case IOERR_ILLEGAL_FRAME:
2641 case IOERR_SEQUENCE_TIMEOUT:
2642 case IOERR_INVALID_RPI:
2648 case IOSTAT_NPORT_RJT:
2649 case IOSTAT_FABRIC_RJT:
2650 if (irsp->un.ulpWord[4] & RJT_UNAVAIL_TEMP) {
2656 case IOSTAT_NPORT_BSY:
2657 case IOSTAT_FABRIC_BSY:
2658 logerr = 1; /* Fabric / Remote NPort out of resources */
2663 stat.un.lsRjtError = be32_to_cpu(irsp->un.ulpWord[4]);
2664 /* Added for Vendor specifc support
2665 * Just keep retrying for these Rsn / Exp codes
2667 switch (stat.un.b.lsRjtRsnCode) {
2668 case LSRJT_UNABLE_TPC:
2669 if (stat.un.b.lsRjtRsnCodeExp ==
2670 LSEXP_CMD_IN_PROGRESS) {
2671 if (cmd == ELS_CMD_PLOGI) {
2678 if (cmd == ELS_CMD_PLOGI) {
2680 maxretry = lpfc_max_els_tries + 1;
2684 if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
2685 (cmd == ELS_CMD_FDISC) &&
2686 (stat.un.b.lsRjtRsnCodeExp == LSEXP_OUT_OF_RESOURCE)){
2687 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
2688 "0125 FDISC Failed (x%x). "
2689 "Fabric out of resources\n",
2690 stat.un.lsRjtError);
2691 lpfc_vport_set_state(vport,
2692 FC_VPORT_NO_FABRIC_RSCS);
2696 case LSRJT_LOGICAL_BSY:
2697 if ((cmd == ELS_CMD_PLOGI) ||
2698 (cmd == ELS_CMD_PRLI)) {
2701 } else if (cmd == ELS_CMD_FDISC) {
2702 /* FDISC retry policy */
2704 if (cmdiocb->retry >= 32)
2710 case LSRJT_LOGICAL_ERR:
2711 /* There are some cases where switches return this
2712 * error when they are not ready and should be returning
2713 * Logical Busy. We should delay every time.
2715 if (cmd == ELS_CMD_FDISC &&
2716 stat.un.b.lsRjtRsnCodeExp == LSEXP_PORT_LOGIN_REQ) {
2722 case LSRJT_PROTOCOL_ERR:
2723 if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
2724 (cmd == ELS_CMD_FDISC) &&
2725 ((stat.un.b.lsRjtRsnCodeExp == LSEXP_INVALID_PNAME) ||
2726 (stat.un.b.lsRjtRsnCodeExp == LSEXP_INVALID_NPORT_ID))
2728 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
2729 "0122 FDISC Failed (x%x). "
2730 "Fabric Detected Bad WWN\n",
2731 stat.un.lsRjtError);
2732 lpfc_vport_set_state(vport,
2733 FC_VPORT_FABRIC_REJ_WWN);
2739 case IOSTAT_INTERMED_RSP:
2747 if (did == FDMI_DID)
2750 if (((cmd == ELS_CMD_FLOGI) || (cmd == ELS_CMD_FDISC)) &&
2751 (phba->fc_topology != TOPOLOGY_LOOP) &&
2752 !lpfc_error_lost_link(irsp)) {
2753 /* FLOGI retry policy */
2757 if (cmdiocb->retry >= 100)
2759 else if (cmdiocb->retry >= 32)
2764 if (maxretry && (cmdiocb->retry >= maxretry)) {
2765 phba->fc_stat.elsRetryExceeded++;
2769 if ((vport->load_flag & FC_UNLOADING) != 0)
2774 /* Retry ELS command <elsCmd> to remote NPORT <did> */
2775 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
2776 "0107 Retry ELS command x%x to remote "
2777 "NPORT x%x Data: x%x x%x\n",
2778 cmd, did, cmdiocb->retry, delay);
2780 if (((cmd == ELS_CMD_PLOGI) || (cmd == ELS_CMD_ADISC)) &&
2781 ((irsp->ulpStatus != IOSTAT_LOCAL_REJECT) ||
2782 ((irsp->un.ulpWord[4] & 0xff) != IOERR_NO_RESOURCES))) {
2783 /* Don't reset timer for no resources */
2785 /* If discovery / RSCN timer is running, reset it */
2786 if (timer_pending(&vport->fc_disctmo) ||
2787 (vport->fc_flag & FC_RSCN_MODE))
2788 lpfc_set_disctmo(vport);
2791 phba->fc_stat.elsXmitRetry++;
2792 if (ndlp && NLP_CHK_NODE_ACT(ndlp) && delay) {
2793 phba->fc_stat.elsDelayRetry++;
2794 ndlp->nlp_retry = cmdiocb->retry;
2796 /* delay is specified in milliseconds */
2797 mod_timer(&ndlp->nlp_delayfunc,
2798 jiffies + msecs_to_jiffies(delay));
2799 spin_lock_irq(shost->host_lock);
2800 ndlp->nlp_flag |= NLP_DELAY_TMO;
2801 spin_unlock_irq(shost->host_lock);
2803 ndlp->nlp_prev_state = ndlp->nlp_state;
2804 if (cmd == ELS_CMD_PRLI)
2805 lpfc_nlp_set_state(vport, ndlp,
2806 NLP_STE_REG_LOGIN_ISSUE);
2808 lpfc_nlp_set_state(vport, ndlp,
2810 ndlp->nlp_last_elscmd = cmd;
2816 lpfc_issue_els_flogi(vport, ndlp, cmdiocb->retry);
2819 lpfc_issue_els_fdisc(vport, ndlp, cmdiocb->retry);
2822 if (ndlp && NLP_CHK_NODE_ACT(ndlp)) {
2823 ndlp->nlp_prev_state = ndlp->nlp_state;
2824 lpfc_nlp_set_state(vport, ndlp,
2825 NLP_STE_PLOGI_ISSUE);
2827 lpfc_issue_els_plogi(vport, did, cmdiocb->retry);
2830 ndlp->nlp_prev_state = ndlp->nlp_state;
2831 lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
2832 lpfc_issue_els_adisc(vport, ndlp, cmdiocb->retry);
2835 ndlp->nlp_prev_state = ndlp->nlp_state;
2836 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PRLI_ISSUE);
2837 lpfc_issue_els_prli(vport, ndlp, cmdiocb->retry);
2840 ndlp->nlp_prev_state = ndlp->nlp_state;
2841 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2842 lpfc_issue_els_logo(vport, ndlp, cmdiocb->retry);
2846 /* No retry ELS command <elsCmd> to remote NPORT <did> */
2848 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
2849 "0137 No retry ELS command x%x to remote "
2850 "NPORT x%x: Out of Resources: Error:x%x/%x\n",
2851 cmd, did, irsp->ulpStatus,
2852 irsp->un.ulpWord[4]);
2855 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
2856 "0108 No retry ELS command x%x to remote "
2857 "NPORT x%x Retried:%d Error:x%x/%x\n",
2858 cmd, did, cmdiocb->retry, irsp->ulpStatus,
2859 irsp->un.ulpWord[4]);
2865 * lpfc_els_free_data - Free lpfc dma buffer and data structure with an iocb
2866 * @phba: pointer to lpfc hba data structure.
2867 * @buf_ptr1: pointer to the lpfc DMA buffer data structure.
2869 * This routine releases the lpfc DMA (Direct Memory Access) buffer(s)
2870 * associated with a command IOCB back to the lpfc DMA buffer pool. It first
2871 * checks to see whether there is a lpfc DMA buffer associated with the
2872 * response of the command IOCB. If so, it will be released before releasing
2873 * the lpfc DMA buffer associated with the IOCB itself.
2876 * 0 - Successfully released lpfc DMA buffer (currently, always return 0)
2879 lpfc_els_free_data(struct lpfc_hba *phba, struct lpfc_dmabuf *buf_ptr1)
2881 struct lpfc_dmabuf *buf_ptr;
2883 /* Free the response before processing the command. */
2884 if (!list_empty(&buf_ptr1->list)) {
2885 list_remove_head(&buf_ptr1->list, buf_ptr,
2888 lpfc_mbuf_free(phba, buf_ptr->virt, buf_ptr->phys);
2891 lpfc_mbuf_free(phba, buf_ptr1->virt, buf_ptr1->phys);
2897 * lpfc_els_free_bpl - Free lpfc dma buffer and data structure with bpl
2898 * @phba: pointer to lpfc hba data structure.
2899 * @buf_ptr: pointer to the lpfc dma buffer data structure.
2901 * This routine releases the lpfc Direct Memory Access (DMA) buffer
2902 * associated with a Buffer Pointer List (BPL) back to the lpfc DMA buffer
2906 * 0 - Successfully released lpfc DMA buffer (currently, always return 0)
2909 lpfc_els_free_bpl(struct lpfc_hba *phba, struct lpfc_dmabuf *buf_ptr)
2911 lpfc_mbuf_free(phba, buf_ptr->virt, buf_ptr->phys);
2917 * lpfc_els_free_iocb - Free a command iocb and its associated resources
2918 * @phba: pointer to lpfc hba data structure.
2919 * @elsiocb: pointer to lpfc els command iocb data structure.
2921 * This routine frees a command IOCB and its associated resources. The
2922 * command IOCB data structure contains the reference to various associated
2923 * resources, these fields must be set to NULL if the associated reference
2925 * context1 - reference to ndlp
2926 * context2 - reference to cmd
2927 * context2->next - reference to rsp
2928 * context3 - reference to bpl
2930 * It first properly decrements the reference count held on ndlp for the
2931 * IOCB completion callback function. If LPFC_DELAY_MEM_FREE flag is not
2932 * set, it invokes the lpfc_els_free_data() routine to release the Direct
2933 * Memory Access (DMA) buffers associated with the IOCB. Otherwise, it
2934 * adds the DMA buffer the @phba data structure for the delayed release.
2935 * If reference to the Buffer Pointer List (BPL) is present, the
2936 * lpfc_els_free_bpl() routine is invoked to release the DMA memory
2937 * associated with BPL. Finally, the lpfc_sli_release_iocbq() routine is
2938 * invoked to release the IOCB data structure back to @phba IOCBQ list.
2941 * 0 - Success (currently, always return 0)
2944 lpfc_els_free_iocb(struct lpfc_hba *phba, struct lpfc_iocbq *elsiocb)
2946 struct lpfc_dmabuf *buf_ptr, *buf_ptr1;
2947 struct lpfc_nodelist *ndlp;
2949 ndlp = (struct lpfc_nodelist *)elsiocb->context1;
2951 if (ndlp->nlp_flag & NLP_DEFER_RM) {
2954 /* If the ndlp is not being used by another discovery
2957 if (!lpfc_nlp_not_used(ndlp)) {
2958 /* If ndlp is being used by another discovery
2959 * thread, just clear NLP_DEFER_RM
2961 ndlp->nlp_flag &= ~NLP_DEFER_RM;
2966 elsiocb->context1 = NULL;
2968 /* context2 = cmd, context2->next = rsp, context3 = bpl */
2969 if (elsiocb->context2) {
2970 if (elsiocb->iocb_flag & LPFC_DELAY_MEM_FREE) {
2971 /* Firmware could still be in progress of DMAing
2972 * payload, so don't free data buffer till after
2975 elsiocb->iocb_flag &= ~LPFC_DELAY_MEM_FREE;
2976 buf_ptr = elsiocb->context2;
2977 elsiocb->context2 = NULL;
2980 spin_lock_irq(&phba->hbalock);
2981 if (!list_empty(&buf_ptr->list)) {
2982 list_remove_head(&buf_ptr->list,
2983 buf_ptr1, struct lpfc_dmabuf,
2985 INIT_LIST_HEAD(&buf_ptr1->list);
2986 list_add_tail(&buf_ptr1->list,
2990 INIT_LIST_HEAD(&buf_ptr->list);
2991 list_add_tail(&buf_ptr->list, &phba->elsbuf);
2993 spin_unlock_irq(&phba->hbalock);
2996 buf_ptr1 = (struct lpfc_dmabuf *) elsiocb->context2;
2997 lpfc_els_free_data(phba, buf_ptr1);
3001 if (elsiocb->context3) {
3002 buf_ptr = (struct lpfc_dmabuf *) elsiocb->context3;
3003 lpfc_els_free_bpl(phba, buf_ptr);
3005 lpfc_sli_release_iocbq(phba, elsiocb);
3010 * lpfc_cmpl_els_logo_acc - Completion callback function to logo acc response
3011 * @phba: pointer to lpfc hba data structure.
3012 * @cmdiocb: pointer to lpfc command iocb data structure.
3013 * @rspiocb: pointer to lpfc response iocb data structure.
3015 * This routine is the completion callback function to the Logout (LOGO)
3016 * Accept (ACC) Response ELS command. This routine is invoked to indicate
3017 * the completion of the LOGO process. It invokes the lpfc_nlp_not_used() to
3018 * release the ndlp if it has the last reference remaining (reference count
3019 * is 1). If succeeded (meaning ndlp released), it sets the IOCB context1
3020 * field to NULL to inform the following lpfc_els_free_iocb() routine no
3021 * ndlp reference count needs to be decremented. Otherwise, the ndlp
3022 * reference use-count shall be decremented by the lpfc_els_free_iocb()
3023 * routine. Finally, the lpfc_els_free_iocb() is invoked to release the
3024 * IOCB data structure.
3027 lpfc_cmpl_els_logo_acc(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
3028 struct lpfc_iocbq *rspiocb)
3030 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) cmdiocb->context1;
3031 struct lpfc_vport *vport = cmdiocb->vport;
3034 irsp = &rspiocb->iocb;
3035 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
3036 "ACC LOGO cmpl: status:x%x/x%x did:x%x",
3037 irsp->ulpStatus, irsp->un.ulpWord[4], ndlp->nlp_DID);
3038 /* ACC to LOGO completes to NPort <nlp_DID> */
3039 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
3040 "0109 ACC to LOGO completes to NPort x%x "
3041 "Data: x%x x%x x%x\n",
3042 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
3045 if (ndlp->nlp_state == NLP_STE_NPR_NODE) {
3046 /* NPort Recovery mode or node is just allocated */
3047 if (!lpfc_nlp_not_used(ndlp)) {
3048 /* If the ndlp is being used by another discovery
3049 * thread, just unregister the RPI.
3051 lpfc_unreg_rpi(vport, ndlp);
3053 /* Indicate the node has already released, should
3054 * not reference to it from within lpfc_els_free_iocb.
3056 cmdiocb->context1 = NULL;
3059 lpfc_els_free_iocb(phba, cmdiocb);
3064 * lpfc_mbx_cmpl_dflt_rpi - Completion callbk func for unreg dflt rpi mbox cmd
3065 * @phba: pointer to lpfc hba data structure.
3066 * @pmb: pointer to the driver internal queue element for mailbox command.
3068 * This routine is the completion callback function for unregister default
3069 * RPI (Remote Port Index) mailbox command to the @phba. It simply releases
3070 * the associated lpfc Direct Memory Access (DMA) buffer back to the pool and
3071 * decrements the ndlp reference count held for this completion callback
3072 * function. After that, it invokes the lpfc_nlp_not_used() to check
3073 * whether there is only one reference left on the ndlp. If so, it will
3074 * perform one more decrement and trigger the release of the ndlp.
3077 lpfc_mbx_cmpl_dflt_rpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
3079 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
3080 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2;
3083 * This routine is used to register and unregister in previous SLI
3086 if ((pmb->u.mb.mbxCommand == MBX_UNREG_LOGIN) &&
3087 (phba->sli_rev == LPFC_SLI_REV4))
3088 lpfc_sli4_free_rpi(phba, pmb->u.mb.un.varUnregLogin.rpi);
3090 pmb->context1 = NULL;
3091 lpfc_mbuf_free(phba, mp->virt, mp->phys);
3093 mempool_free(pmb, phba->mbox_mem_pool);
3094 if (ndlp && NLP_CHK_NODE_ACT(ndlp)) {
3096 /* This is the end of the default RPI cleanup logic for this
3097 * ndlp. If no other discovery threads are using this ndlp.
3098 * we should free all resources associated with it.
3100 lpfc_nlp_not_used(ndlp);
3107 * lpfc_cmpl_els_rsp - Completion callback function for els response iocb cmd
3108 * @phba: pointer to lpfc hba data structure.
3109 * @cmdiocb: pointer to lpfc command iocb data structure.
3110 * @rspiocb: pointer to lpfc response iocb data structure.
3112 * This routine is the completion callback function for ELS Response IOCB
3113 * command. In normal case, this callback function just properly sets the
3114 * nlp_flag bitmap in the ndlp data structure, if the mbox command reference
3115 * field in the command IOCB is not NULL, the referred mailbox command will
3116 * be send out, and then invokes the lpfc_els_free_iocb() routine to release
3117 * the IOCB. Under error conditions, such as when a LS_RJT is returned or a
3118 * link down event occurred during the discovery, the lpfc_nlp_not_used()
3119 * routine shall be invoked trying to release the ndlp if no other threads
3120 * are currently referring it.
3123 lpfc_cmpl_els_rsp(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
3124 struct lpfc_iocbq *rspiocb)
3126 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) cmdiocb->context1;
3127 struct lpfc_vport *vport = ndlp ? ndlp->vport : NULL;
3128 struct Scsi_Host *shost = vport ? lpfc_shost_from_vport(vport) : NULL;
3131 LPFC_MBOXQ_t *mbox = NULL;
3132 struct lpfc_dmabuf *mp = NULL;
3133 uint32_t ls_rjt = 0;
3135 irsp = &rspiocb->iocb;
3137 if (cmdiocb->context_un.mbox)
3138 mbox = cmdiocb->context_un.mbox;
3140 /* First determine if this is a LS_RJT cmpl. Note, this callback
3141 * function can have cmdiocb->contest1 (ndlp) field set to NULL.
3143 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) cmdiocb->context2)->virt);
3144 if (ndlp && NLP_CHK_NODE_ACT(ndlp) &&
3145 (*((uint32_t *) (pcmd)) == ELS_CMD_LS_RJT)) {
3146 /* A LS_RJT associated with Default RPI cleanup has its own
3147 * seperate code path.
3149 if (!(ndlp->nlp_flag & NLP_RM_DFLT_RPI))
3153 /* Check to see if link went down during discovery */
3154 if (!ndlp || !NLP_CHK_NODE_ACT(ndlp) || lpfc_els_chk_latt(vport)) {
3156 mp = (struct lpfc_dmabuf *) mbox->context1;
3158 lpfc_mbuf_free(phba, mp->virt, mp->phys);
3161 mempool_free(mbox, phba->mbox_mem_pool);
3163 if (ndlp && NLP_CHK_NODE_ACT(ndlp) &&
3164 (ndlp->nlp_flag & NLP_RM_DFLT_RPI))
3165 if (lpfc_nlp_not_used(ndlp)) {
3167 /* Indicate the node has already released,
3168 * should not reference to it from within
3169 * the routine lpfc_els_free_iocb.
3171 cmdiocb->context1 = NULL;
3176 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
3177 "ELS rsp cmpl: status:x%x/x%x did:x%x",
3178 irsp->ulpStatus, irsp->un.ulpWord[4],
3179 cmdiocb->iocb.un.elsreq64.remoteID);
3180 /* ELS response tag <ulpIoTag> completes */
3181 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
3182 "0110 ELS response tag x%x completes "
3183 "Data: x%x x%x x%x x%x x%x x%x x%x\n",
3184 cmdiocb->iocb.ulpIoTag, rspiocb->iocb.ulpStatus,
3185 rspiocb->iocb.un.ulpWord[4], rspiocb->iocb.ulpTimeout,
3186 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
3189 if ((rspiocb->iocb.ulpStatus == 0)
3190 && (ndlp->nlp_flag & NLP_ACC_REGLOGIN)) {
3191 lpfc_unreg_rpi(vport, ndlp);
3192 /* Increment reference count to ndlp to hold the
3193 * reference to ndlp for the callback function.
3195 mbox->context2 = lpfc_nlp_get(ndlp);
3196 mbox->vport = vport;
3197 if (ndlp->nlp_flag & NLP_RM_DFLT_RPI) {
3198 mbox->mbox_flag |= LPFC_MBX_IMED_UNREG;
3199 mbox->mbox_cmpl = lpfc_mbx_cmpl_dflt_rpi;
3202 mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login;
3203 ndlp->nlp_prev_state = ndlp->nlp_state;
3204 lpfc_nlp_set_state(vport, ndlp,
3205 NLP_STE_REG_LOGIN_ISSUE);
3207 if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT)
3208 != MBX_NOT_FINISHED)
3211 /* Decrement the ndlp reference count we
3212 * set for this failed mailbox command.
3216 /* ELS rsp: Cannot issue reg_login for <NPortid> */
3217 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
3218 "0138 ELS rsp: Cannot issue reg_login for x%x "
3219 "Data: x%x x%x x%x\n",
3220 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
3223 if (lpfc_nlp_not_used(ndlp)) {
3225 /* Indicate node has already been released,
3226 * should not reference to it from within
3227 * the routine lpfc_els_free_iocb.
3229 cmdiocb->context1 = NULL;
3232 /* Do not drop node for lpfc_els_abort'ed ELS cmds */
3233 if (!lpfc_error_lost_link(irsp) &&
3234 ndlp->nlp_flag & NLP_ACC_REGLOGIN) {
3235 if (lpfc_nlp_not_used(ndlp)) {
3237 /* Indicate node has already been
3238 * released, should not reference
3239 * to it from within the routine
3240 * lpfc_els_free_iocb.
3242 cmdiocb->context1 = NULL;
3246 mp = (struct lpfc_dmabuf *) mbox->context1;
3248 lpfc_mbuf_free(phba, mp->virt, mp->phys);
3251 mempool_free(mbox, phba->mbox_mem_pool);
3254 if (ndlp && NLP_CHK_NODE_ACT(ndlp)) {
3255 spin_lock_irq(shost->host_lock);
3256 ndlp->nlp_flag &= ~(NLP_ACC_REGLOGIN | NLP_RM_DFLT_RPI);
3257 spin_unlock_irq(shost->host_lock);
3259 /* If the node is not being used by another discovery thread,
3260 * and we are sending a reject, we are done with it.
3261 * Release driver reference count here and free associated
3265 if (lpfc_nlp_not_used(ndlp))
3266 /* Indicate node has already been released,
3267 * should not reference to it from within
3268 * the routine lpfc_els_free_iocb.
3270 cmdiocb->context1 = NULL;
3273 lpfc_els_free_iocb(phba, cmdiocb);
3278 * lpfc_els_rsp_acc - Prepare and issue an acc response iocb command
3279 * @vport: pointer to a host virtual N_Port data structure.
3280 * @flag: the els command code to be accepted.
3281 * @oldiocb: pointer to the original lpfc command iocb data structure.
3282 * @ndlp: pointer to a node-list data structure.
3283 * @mbox: pointer to the driver internal queue element for mailbox command.
3285 * This routine prepares and issues an Accept (ACC) response IOCB
3286 * command. It uses the @flag to properly set up the IOCB field for the
3287 * specific ACC response command to be issued and invokes the
3288 * lpfc_sli_issue_iocb() routine to send out ACC response IOCB. If a
3289 * @mbox pointer is passed in, it will be put into the context_un.mbox
3290 * field of the IOCB for the completion callback function to issue the
3291 * mailbox command to the HBA later when callback is invoked.
3293 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
3294 * will be incremented by 1 for holding the ndlp and the reference to ndlp
3295 * will be stored into the context1 field of the IOCB for the completion
3296 * callback function to the corresponding response ELS IOCB command.
3299 * 0 - Successfully issued acc response
3300 * 1 - Failed to issue acc response
3303 lpfc_els_rsp_acc(struct lpfc_vport *vport, uint32_t flag,
3304 struct lpfc_iocbq *oldiocb, struct lpfc_nodelist *ndlp,
3307 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3308 struct lpfc_hba *phba = vport->phba;
3311 struct lpfc_iocbq *elsiocb;
3312 struct lpfc_sli *psli;
3316 ELS_PKT *els_pkt_ptr;
3319 oldcmd = &oldiocb->iocb;
3323 cmdsize = sizeof(uint32_t);
3324 elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry,
3325 ndlp, ndlp->nlp_DID, ELS_CMD_ACC);
3327 spin_lock_irq(shost->host_lock);
3328 ndlp->nlp_flag &= ~NLP_LOGO_ACC;
3329 spin_unlock_irq(shost->host_lock);
3333 icmd = &elsiocb->iocb;
3334 icmd->ulpContext = oldcmd->ulpContext; /* Xri */
3335 pcmd = (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
3336 *((uint32_t *) (pcmd)) = ELS_CMD_ACC;
3337 pcmd += sizeof(uint32_t);
3339 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
3340 "Issue ACC: did:x%x flg:x%x",
3341 ndlp->nlp_DID, ndlp->nlp_flag, 0);
3344 cmdsize = (sizeof(struct serv_parm) + sizeof(uint32_t));
3345 elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry,
3346 ndlp, ndlp->nlp_DID, ELS_CMD_ACC);
3350 icmd = &elsiocb->iocb;
3351 icmd->ulpContext = oldcmd->ulpContext; /* Xri */
3352 pcmd = (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
3355 elsiocb->context_un.mbox = mbox;
3357 *((uint32_t *) (pcmd)) = ELS_CMD_ACC;
3358 pcmd += sizeof(uint32_t);
3359 memcpy(pcmd, &vport->fc_sparam, sizeof(struct serv_parm));
3361 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
3362 "Issue ACC PLOGI: did:x%x flg:x%x",
3363 ndlp->nlp_DID, ndlp->nlp_flag, 0);
3366 cmdsize = sizeof(uint32_t) + sizeof(PRLO);
3367 elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry,
3368 ndlp, ndlp->nlp_DID, ELS_CMD_PRLO);
3372 icmd = &elsiocb->iocb;
3373 icmd->ulpContext = oldcmd->ulpContext; /* Xri */
3374 pcmd = (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
3376 memcpy(pcmd, ((struct lpfc_dmabuf *) oldiocb->context2)->virt,
3377 sizeof(uint32_t) + sizeof(PRLO));
3378 *((uint32_t *) (pcmd)) = ELS_CMD_PRLO_ACC;
3379 els_pkt_ptr = (ELS_PKT *) pcmd;
3380 els_pkt_ptr->un.prlo.acceptRspCode = PRLO_REQ_EXECUTED;
3382 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
3383 "Issue ACC PRLO: did:x%x flg:x%x",
3384 ndlp->nlp_DID, ndlp->nlp_flag, 0);
3389 /* Xmit ELS ACC response tag <ulpIoTag> */
3390 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
3391 "0128 Xmit ELS ACC response tag x%x, XRI: x%x, "
3392 "DID: x%x, nlp_flag: x%x nlp_state: x%x RPI: x%x\n",
3393 elsiocb->iotag, elsiocb->iocb.ulpContext,
3394 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
3396 if (ndlp->nlp_flag & NLP_LOGO_ACC) {
3397 spin_lock_irq(shost->host_lock);
3398 ndlp->nlp_flag &= ~NLP_LOGO_ACC;
3399 spin_unlock_irq(shost->host_lock);
3400 elsiocb->iocb_cmpl = lpfc_cmpl_els_logo_acc;
3402 elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp;
3405 phba->fc_stat.elsXmitACC++;
3406 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
3407 if (rc == IOCB_ERROR) {
3408 lpfc_els_free_iocb(phba, elsiocb);
3415 * lpfc_els_rsp_reject - Propare and issue a rjt response iocb command
3416 * @vport: pointer to a virtual N_Port data structure.
3418 * @oldiocb: pointer to the original lpfc command iocb data structure.
3419 * @ndlp: pointer to a node-list data structure.
3420 * @mbox: pointer to the driver internal queue element for mailbox command.
3422 * This routine prepares and issue an Reject (RJT) response IOCB
3423 * command. If a @mbox pointer is passed in, it will be put into the
3424 * context_un.mbox field of the IOCB for the completion callback function
3425 * to issue to the HBA later.
3427 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
3428 * will be incremented by 1 for holding the ndlp and the reference to ndlp
3429 * will be stored into the context1 field of the IOCB for the completion
3430 * callback function to the reject response ELS IOCB command.
3433 * 0 - Successfully issued reject response
3434 * 1 - Failed to issue reject response
3437 lpfc_els_rsp_reject(struct lpfc_vport *vport, uint32_t rejectError,
3438 struct lpfc_iocbq *oldiocb, struct lpfc_nodelist *ndlp,
3441 struct lpfc_hba *phba = vport->phba;
3444 struct lpfc_iocbq *elsiocb;
3445 struct lpfc_sli *psli;
3451 cmdsize = 2 * sizeof(uint32_t);
3452 elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp,
3453 ndlp->nlp_DID, ELS_CMD_LS_RJT);
3457 icmd = &elsiocb->iocb;
3458 oldcmd = &oldiocb->iocb;
3459 icmd->ulpContext = oldcmd->ulpContext; /* Xri */
3460 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
3462 *((uint32_t *) (pcmd)) = ELS_CMD_LS_RJT;
3463 pcmd += sizeof(uint32_t);
3464 *((uint32_t *) (pcmd)) = rejectError;
3467 elsiocb->context_un.mbox = mbox;
3469 /* Xmit ELS RJT <err> response tag <ulpIoTag> */
3470 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
3471 "0129 Xmit ELS RJT x%x response tag x%x "
3472 "xri x%x, did x%x, nlp_flag x%x, nlp_state x%x, "
3474 rejectError, elsiocb->iotag,
3475 elsiocb->iocb.ulpContext, ndlp->nlp_DID,
3476 ndlp->nlp_flag, ndlp->nlp_state, ndlp->nlp_rpi);
3477 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
3478 "Issue LS_RJT: did:x%x flg:x%x err:x%x",
3479 ndlp->nlp_DID, ndlp->nlp_flag, rejectError);
3481 phba->fc_stat.elsXmitLSRJT++;
3482 elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp;
3483 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
3485 if (rc == IOCB_ERROR) {
3486 lpfc_els_free_iocb(phba, elsiocb);
3493 * lpfc_els_rsp_adisc_acc - Prepare and issue acc response to adisc iocb cmd
3494 * @vport: pointer to a virtual N_Port data structure.
3495 * @oldiocb: pointer to the original lpfc command iocb data structure.
3496 * @ndlp: pointer to a node-list data structure.
3498 * This routine prepares and issues an Accept (ACC) response to Address
3499 * Discover (ADISC) ELS command. It simply prepares the payload of the IOCB
3500 * and invokes the lpfc_sli_issue_iocb() routine to send out the command.
3502 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
3503 * will be incremented by 1 for holding the ndlp and the reference to ndlp
3504 * will be stored into the context1 field of the IOCB for the completion
3505 * callback function to the ADISC Accept response ELS IOCB command.
3508 * 0 - Successfully issued acc adisc response
3509 * 1 - Failed to issue adisc acc response
3512 lpfc_els_rsp_adisc_acc(struct lpfc_vport *vport, struct lpfc_iocbq *oldiocb,
3513 struct lpfc_nodelist *ndlp)
3515 struct lpfc_hba *phba = vport->phba;
3517 IOCB_t *icmd, *oldcmd;
3518 struct lpfc_iocbq *elsiocb;
3523 cmdsize = sizeof(uint32_t) + sizeof(ADISC);
3524 elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp,
3525 ndlp->nlp_DID, ELS_CMD_ACC);
3529 icmd = &elsiocb->iocb;
3530 oldcmd = &oldiocb->iocb;
3531 icmd->ulpContext = oldcmd->ulpContext; /* Xri */
3533 /* Xmit ADISC ACC response tag <ulpIoTag> */
3534 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
3535 "0130 Xmit ADISC ACC response iotag x%x xri: "
3536 "x%x, did x%x, nlp_flag x%x, nlp_state x%x rpi x%x\n",
3537 elsiocb->iotag, elsiocb->iocb.ulpContext,
3538 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
3540 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
3542 *((uint32_t *) (pcmd)) = ELS_CMD_ACC;
3543 pcmd += sizeof(uint32_t);
3545 ap = (ADISC *) (pcmd);
3546 ap->hardAL_PA = phba->fc_pref_ALPA;
3547 memcpy(&ap->portName, &vport->fc_portname, sizeof(struct lpfc_name));
3548 memcpy(&ap->nodeName, &vport->fc_nodename, sizeof(struct lpfc_name));
3549 ap->DID = be32_to_cpu(vport->fc_myDID);
3551 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
3552 "Issue ACC ADISC: did:x%x flg:x%x",
3553 ndlp->nlp_DID, ndlp->nlp_flag, 0);
3555 phba->fc_stat.elsXmitACC++;
3556 elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp;
3557 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
3558 if (rc == IOCB_ERROR) {
3559 lpfc_els_free_iocb(phba, elsiocb);
3566 * lpfc_els_rsp_prli_acc - Prepare and issue acc response to prli iocb cmd
3567 * @vport: pointer to a virtual N_Port data structure.
3568 * @oldiocb: pointer to the original lpfc command iocb data structure.
3569 * @ndlp: pointer to a node-list data structure.
3571 * This routine prepares and issues an Accept (ACC) response to Process
3572 * Login (PRLI) ELS command. It simply prepares the payload of the IOCB
3573 * and invokes the lpfc_sli_issue_iocb() routine to send out the command.
3575 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
3576 * will be incremented by 1 for holding the ndlp and the reference to ndlp
3577 * will be stored into the context1 field of the IOCB for the completion
3578 * callback function to the PRLI Accept response ELS IOCB command.
3581 * 0 - Successfully issued acc prli response
3582 * 1 - Failed to issue acc prli response
3585 lpfc_els_rsp_prli_acc(struct lpfc_vport *vport, struct lpfc_iocbq *oldiocb,
3586 struct lpfc_nodelist *ndlp)
3588 struct lpfc_hba *phba = vport->phba;
3593 struct lpfc_iocbq *elsiocb;
3594 struct lpfc_sli *psli;
3601 cmdsize = sizeof(uint32_t) + sizeof(PRLI);
3602 elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp,
3603 ndlp->nlp_DID, (ELS_CMD_ACC | (ELS_CMD_PRLI & ~ELS_RSP_MASK)));
3607 icmd = &elsiocb->iocb;
3608 oldcmd = &oldiocb->iocb;
3609 icmd->ulpContext = oldcmd->ulpContext; /* Xri */
3610 /* Xmit PRLI ACC response tag <ulpIoTag> */
3611 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
3612 "0131 Xmit PRLI ACC response tag x%x xri x%x, "
3613 "did x%x, nlp_flag x%x, nlp_state x%x, rpi x%x\n",
3614 elsiocb->iotag, elsiocb->iocb.ulpContext,
3615 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
3617 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
3619 *((uint32_t *) (pcmd)) = (ELS_CMD_ACC | (ELS_CMD_PRLI & ~ELS_RSP_MASK));
3620 pcmd += sizeof(uint32_t);
3622 /* For PRLI, remainder of payload is PRLI parameter page */
3623 memset(pcmd, 0, sizeof(PRLI));
3625 npr = (PRLI *) pcmd;
3628 * If the remote port is a target and our firmware version is 3.20 or
3629 * later, set the following bits for FC-TAPE support.
3631 if ((ndlp->nlp_type & NLP_FCP_TARGET) &&
3632 (vpd->rev.feaLevelHigh >= 0x02)) {
3633 npr->ConfmComplAllowed = 1;
3635 npr->TaskRetryIdReq = 1;
3638 npr->acceptRspCode = PRLI_REQ_EXECUTED;
3639 npr->estabImagePair = 1;
3640 npr->readXferRdyDis = 1;
3641 npr->ConfmComplAllowed = 1;
3643 npr->prliType = PRLI_FCP_TYPE;
3644 npr->initiatorFunc = 1;
3646 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
3647 "Issue ACC PRLI: did:x%x flg:x%x",
3648 ndlp->nlp_DID, ndlp->nlp_flag, 0);
3650 phba->fc_stat.elsXmitACC++;
3651 elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp;
3653 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
3654 if (rc == IOCB_ERROR) {
3655 lpfc_els_free_iocb(phba, elsiocb);
3662 * lpfc_els_rsp_rnid_acc - Issue rnid acc response iocb command
3663 * @vport: pointer to a virtual N_Port data structure.
3664 * @format: rnid command format.
3665 * @oldiocb: pointer to the original lpfc command iocb data structure.
3666 * @ndlp: pointer to a node-list data structure.
3668 * This routine issues a Request Node Identification Data (RNID) Accept
3669 * (ACC) response. It constructs the RNID ACC response command according to
3670 * the proper @format and then calls the lpfc_sli_issue_iocb() routine to
3671 * issue the response. Note that this command does not need to hold the ndlp
3672 * reference count for the callback. So, the ndlp reference count taken by
3673 * the lpfc_prep_els_iocb() routine is put back and the context1 field of
3674 * IOCB is set to NULL to indicate to the lpfc_els_free_iocb() routine that
3675 * there is no ndlp reference available.
3677 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
3678 * will be incremented by 1 for holding the ndlp and the reference to ndlp
3679 * will be stored into the context1 field of the IOCB for the completion
3680 * callback function. However, for the RNID Accept Response ELS command,
3681 * this is undone later by this routine after the IOCB is allocated.
3684 * 0 - Successfully issued acc rnid response
3685 * 1 - Failed to issue acc rnid response
3688 lpfc_els_rsp_rnid_acc(struct lpfc_vport *vport, uint8_t format,
3689 struct lpfc_iocbq *oldiocb, struct lpfc_nodelist *ndlp)
3691 struct lpfc_hba *phba = vport->phba;
3693 IOCB_t *icmd, *oldcmd;
3694 struct lpfc_iocbq *elsiocb;
3695 struct lpfc_sli *psli;
3701 cmdsize = sizeof(uint32_t) + sizeof(uint32_t)
3702 + (2 * sizeof(struct lpfc_name));
3704 cmdsize += sizeof(RNID_TOP_DISC);
3706 elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp,
3707 ndlp->nlp_DID, ELS_CMD_ACC);
3711 icmd = &elsiocb->iocb;
3712 oldcmd = &oldiocb->iocb;
3713 icmd->ulpContext = oldcmd->ulpContext; /* Xri */
3714 /* Xmit RNID ACC response tag <ulpIoTag> */
3715 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
3716 "0132 Xmit RNID ACC response tag x%x xri x%x\n",
3717 elsiocb->iotag, elsiocb->iocb.ulpContext);
3718 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
3719 *((uint32_t *) (pcmd)) = ELS_CMD_ACC;
3720 pcmd += sizeof(uint32_t);
3722 memset(pcmd, 0, sizeof(RNID));
3723 rn = (RNID *) (pcmd);
3724 rn->Format = format;
3725 rn->CommonLen = (2 * sizeof(struct lpfc_name));
3726 memcpy(&rn->portName, &vport->fc_portname, sizeof(struct lpfc_name));
3727 memcpy(&rn->nodeName, &vport->fc_nodename, sizeof(struct lpfc_name));
3730 rn->SpecificLen = 0;
3732 case RNID_TOPOLOGY_DISC:
3733 rn->SpecificLen = sizeof(RNID_TOP_DISC);
3734 memcpy(&rn->un.topologyDisc.portName,
3735 &vport->fc_portname, sizeof(struct lpfc_name));
3736 rn->un.topologyDisc.unitType = RNID_HBA;
3737 rn->un.topologyDisc.physPort = 0;
3738 rn->un.topologyDisc.attachedNodes = 0;
3742 rn->SpecificLen = 0;
3746 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
3747 "Issue ACC RNID: did:x%x flg:x%x",
3748 ndlp->nlp_DID, ndlp->nlp_flag, 0);
3750 phba->fc_stat.elsXmitACC++;
3751 elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp;
3753 elsiocb->context1 = NULL; /* Don't need ndlp for cmpl,
3754 * it could be freed */
3756 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
3757 if (rc == IOCB_ERROR) {
3758 lpfc_els_free_iocb(phba, elsiocb);
3765 * lpfc_els_disc_adisc - Issue remaining adisc iocbs to npr nodes of a vport
3766 * @vport: pointer to a host virtual N_Port data structure.
3768 * This routine issues Address Discover (ADISC) ELS commands to those
3769 * N_Ports which are in node port recovery state and ADISC has not been issued
3770 * for the @vport. Each time an ELS ADISC IOCB is issued by invoking the
3771 * lpfc_issue_els_adisc() routine, the per @vport number of discover count
3772 * (num_disc_nodes) shall be incremented. If the num_disc_nodes reaches a
3773 * pre-configured threshold (cfg_discovery_threads), the @vport fc_flag will
3774 * be marked with FC_NLP_MORE bit and the process of issuing remaining ADISC
3775 * IOCBs quit for later pick up. On the other hand, after walking through
3776 * all the ndlps with the @vport and there is none ADISC IOCB issued, the
3777 * @vport fc_flag shall be cleared with FC_NLP_MORE bit indicating there is
3778 * no more ADISC need to be sent.
3781 * The number of N_Ports with adisc issued.
3784 lpfc_els_disc_adisc(struct lpfc_vport *vport)
3786 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3787 struct lpfc_nodelist *ndlp, *next_ndlp;
3790 /* go thru NPR nodes and issue any remaining ELS ADISCs */
3791 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) {
3792 if (!NLP_CHK_NODE_ACT(ndlp))
3794 if (ndlp->nlp_state == NLP_STE_NPR_NODE &&
3795 (ndlp->nlp_flag & NLP_NPR_2B_DISC) != 0 &&
3796 (ndlp->nlp_flag & NLP_NPR_ADISC) != 0) {
3797 spin_lock_irq(shost->host_lock);
3798 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
3799 spin_unlock_irq(shost->host_lock);
3800 ndlp->nlp_prev_state = ndlp->nlp_state;
3801 lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
3802 lpfc_issue_els_adisc(vport, ndlp, 0);
3804 vport->num_disc_nodes++;
3805 if (vport->num_disc_nodes >=
3806 vport->cfg_discovery_threads) {
3807 spin_lock_irq(shost->host_lock);
3808 vport->fc_flag |= FC_NLP_MORE;
3809 spin_unlock_irq(shost->host_lock);
3814 if (sentadisc == 0) {
3815 spin_lock_irq(shost->host_lock);
3816 vport->fc_flag &= ~FC_NLP_MORE;
3817 spin_unlock_irq(shost->host_lock);
3823 * lpfc_els_disc_plogi - Issue plogi for all npr nodes of a vport before adisc
3824 * @vport: pointer to a host virtual N_Port data structure.
3826 * This routine issues Port Login (PLOGI) ELS commands to all the N_Ports
3827 * which are in node port recovery state, with a @vport. Each time an ELS
3828 * ADISC PLOGI IOCB is issued by invoking the lpfc_issue_els_plogi() routine,
3829 * the per @vport number of discover count (num_disc_nodes) shall be
3830 * incremented. If the num_disc_nodes reaches a pre-configured threshold
3831 * (cfg_discovery_threads), the @vport fc_flag will be marked with FC_NLP_MORE
3832 * bit set and quit the process of issuing remaining ADISC PLOGIN IOCBs for
3833 * later pick up. On the other hand, after walking through all the ndlps with
3834 * the @vport and there is none ADISC PLOGI IOCB issued, the @vport fc_flag
3835 * shall be cleared with the FC_NLP_MORE bit indicating there is no more ADISC
3836 * PLOGI need to be sent.
3839 * The number of N_Ports with plogi issued.
3842 lpfc_els_disc_plogi(struct lpfc_vport *vport)
3844 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3845 struct lpfc_nodelist *ndlp, *next_ndlp;
3848 /* go thru NPR nodes and issue any remaining ELS PLOGIs */
3849 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) {
3850 if (!NLP_CHK_NODE_ACT(ndlp))
3852 if (ndlp->nlp_state == NLP_STE_NPR_NODE &&
3853 (ndlp->nlp_flag & NLP_NPR_2B_DISC) != 0 &&
3854 (ndlp->nlp_flag & NLP_DELAY_TMO) == 0 &&
3855 (ndlp->nlp_flag & NLP_NPR_ADISC) == 0) {
3856 ndlp->nlp_prev_state = ndlp->nlp_state;
3857 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
3858 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
3860 vport->num_disc_nodes++;
3861 if (vport->num_disc_nodes >=
3862 vport->cfg_discovery_threads) {
3863 spin_lock_irq(shost->host_lock);
3864 vport->fc_flag |= FC_NLP_MORE;
3865 spin_unlock_irq(shost->host_lock);
3871 lpfc_set_disctmo(vport);
3874 spin_lock_irq(shost->host_lock);
3875 vport->fc_flag &= ~FC_NLP_MORE;
3876 spin_unlock_irq(shost->host_lock);
3882 * lpfc_els_flush_rscn - Clean up any rscn activities with a vport
3883 * @vport: pointer to a host virtual N_Port data structure.
3885 * This routine cleans up any Registration State Change Notification
3886 * (RSCN) activity with a @vport. Note that the fc_rscn_flush flag of the
3887 * @vport together with the host_lock is used to prevent multiple thread
3888 * trying to access the RSCN array on a same @vport at the same time.
3891 lpfc_els_flush_rscn(struct lpfc_vport *vport)
3893 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3894 struct lpfc_hba *phba = vport->phba;
3897 spin_lock_irq(shost->host_lock);
3898 if (vport->fc_rscn_flush) {
3899 /* Another thread is walking fc_rscn_id_list on this vport */
3900 spin_unlock_irq(shost->host_lock);
3903 /* Indicate we are walking lpfc_els_flush_rscn on this vport */
3904 vport->fc_rscn_flush = 1;
3905 spin_unlock_irq(shost->host_lock);
3907 for (i = 0; i < vport->fc_rscn_id_cnt; i++) {
3908 lpfc_in_buf_free(phba, vport->fc_rscn_id_list[i]);
3909 vport->fc_rscn_id_list[i] = NULL;
3911 spin_lock_irq(shost->host_lock);
3912 vport->fc_rscn_id_cnt = 0;
3913 vport->fc_flag &= ~(FC_RSCN_MODE | FC_RSCN_DISCOVERY);
3914 spin_unlock_irq(shost->host_lock);
3915 lpfc_can_disctmo(vport);
3916 /* Indicate we are done walking this fc_rscn_id_list */
3917 vport->fc_rscn_flush = 0;
3921 * lpfc_rscn_payload_check - Check whether there is a pending rscn to a did
3922 * @vport: pointer to a host virtual N_Port data structure.
3923 * @did: remote destination port identifier.
3925 * This routine checks whether there is any pending Registration State
3926 * Configuration Notification (RSCN) to a @did on @vport.
3929 * None zero - The @did matched with a pending rscn
3930 * 0 - not able to match @did with a pending rscn
3933 lpfc_rscn_payload_check(struct lpfc_vport *vport, uint32_t did)
3938 uint32_t payload_len, i;
3939 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3941 ns_did.un.word = did;
3943 /* Never match fabric nodes for RSCNs */
3944 if ((did & Fabric_DID_MASK) == Fabric_DID_MASK)
3947 /* If we are doing a FULL RSCN rediscovery, match everything */
3948 if (vport->fc_flag & FC_RSCN_DISCOVERY)
3951 spin_lock_irq(shost->host_lock);
3952 if (vport->fc_rscn_flush) {
3953 /* Another thread is walking fc_rscn_id_list on this vport */
3954 spin_unlock_irq(shost->host_lock);
3957 /* Indicate we are walking fc_rscn_id_list on this vport */
3958 vport->fc_rscn_flush = 1;
3959 spin_unlock_irq(shost->host_lock);
3960 for (i = 0; i < vport->fc_rscn_id_cnt; i++) {
3961 lp = vport->fc_rscn_id_list[i]->virt;
3962 payload_len = be32_to_cpu(*lp++ & ~ELS_CMD_MASK);
3963 payload_len -= sizeof(uint32_t); /* take off word 0 */
3964 while (payload_len) {
3965 rscn_did.un.word = be32_to_cpu(*lp++);
3966 payload_len -= sizeof(uint32_t);
3967 switch (rscn_did.un.b.resv & RSCN_ADDRESS_FORMAT_MASK) {
3968 case RSCN_ADDRESS_FORMAT_PORT:
3969 if ((ns_did.un.b.domain == rscn_did.un.b.domain)
3970 && (ns_did.un.b.area == rscn_did.un.b.area)
3971 && (ns_did.un.b.id == rscn_did.un.b.id))
3972 goto return_did_out;
3974 case RSCN_ADDRESS_FORMAT_AREA:
3975 if ((ns_did.un.b.domain == rscn_did.un.b.domain)
3976 && (ns_did.un.b.area == rscn_did.un.b.area))
3977 goto return_did_out;
3979 case RSCN_ADDRESS_FORMAT_DOMAIN:
3980 if (ns_did.un.b.domain == rscn_did.un.b.domain)
3981 goto return_did_out;
3983 case RSCN_ADDRESS_FORMAT_FABRIC:
3984 goto return_did_out;
3988 /* Indicate we are done with walking fc_rscn_id_list on this vport */
3989 vport->fc_rscn_flush = 0;
3992 /* Indicate we are done with walking fc_rscn_id_list on this vport */
3993 vport->fc_rscn_flush = 0;
3998 * lpfc_rscn_recovery_check - Send recovery event to vport nodes matching rscn
3999 * @vport: pointer to a host virtual N_Port data structure.
4001 * This routine sends recovery (NLP_EVT_DEVICE_RECOVERY) event to the
4002 * state machine for a @vport's nodes that are with pending RSCN (Registration
4003 * State Change Notification).
4006 * 0 - Successful (currently alway return 0)
4009 lpfc_rscn_recovery_check(struct lpfc_vport *vport)
4011 struct lpfc_nodelist *ndlp = NULL;
4013 /* Move all affected nodes by pending RSCNs to NPR state. */
4014 list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
4015 if (!NLP_CHK_NODE_ACT(ndlp) ||
4016 (ndlp->nlp_state == NLP_STE_UNUSED_NODE) ||
4017 !lpfc_rscn_payload_check(vport, ndlp->nlp_DID))
4019 lpfc_disc_state_machine(vport, ndlp, NULL,
4020 NLP_EVT_DEVICE_RECOVERY);
4021 lpfc_cancel_retry_delay_tmo(vport, ndlp);
4027 * lpfc_send_rscn_event - Send an RSCN event to management application
4028 * @vport: pointer to a host virtual N_Port data structure.
4029 * @cmdiocb: pointer to lpfc command iocb data structure.
4031 * lpfc_send_rscn_event sends an RSCN netlink event to management
4035 lpfc_send_rscn_event(struct lpfc_vport *vport,
4036 struct lpfc_iocbq *cmdiocb)
4038 struct lpfc_dmabuf *pcmd;
4039 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4040 uint32_t *payload_ptr;
4041 uint32_t payload_len;
4042 struct lpfc_rscn_event_header *rscn_event_data;
4044 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
4045 payload_ptr = (uint32_t *) pcmd->virt;
4046 payload_len = be32_to_cpu(*payload_ptr & ~ELS_CMD_MASK);
4048 rscn_event_data = kmalloc(sizeof(struct lpfc_rscn_event_header) +
4049 payload_len, GFP_KERNEL);
4050 if (!rscn_event_data) {
4051 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
4052 "0147 Failed to allocate memory for RSCN event\n");
4055 rscn_event_data->event_type = FC_REG_RSCN_EVENT;
4056 rscn_event_data->payload_length = payload_len;
4057 memcpy(rscn_event_data->rscn_payload, payload_ptr,
4060 fc_host_post_vendor_event(shost,
4061 fc_get_event_number(),
4062 sizeof(struct lpfc_els_event_header) + payload_len,
4063 (char *)rscn_event_data,
4066 kfree(rscn_event_data);
4070 * lpfc_els_rcv_rscn - Process an unsolicited rscn iocb
4071 * @vport: pointer to a host virtual N_Port data structure.
4072 * @cmdiocb: pointer to lpfc command iocb data structure.
4073 * @ndlp: pointer to a node-list data structure.
4075 * This routine processes an unsolicited RSCN (Registration State Change
4076 * Notification) IOCB. First, the payload of the unsolicited RSCN is walked
4077 * to invoke fc_host_post_event() routine to the FC transport layer. If the
4078 * discover state machine is about to begin discovery, it just accepts the
4079 * RSCN and the discovery process will satisfy the RSCN. If this RSCN only
4080 * contains N_Port IDs for other vports on this HBA, it just accepts the
4081 * RSCN and ignore processing it. If the state machine is in the recovery
4082 * state, the fc_rscn_id_list of this @vport is walked and the
4083 * lpfc_rscn_recovery_check() routine is invoked to send recovery event for
4084 * all nodes that match RSCN payload. Otherwise, the lpfc_els_handle_rscn()
4085 * routine is invoked to handle the RSCN event.
4088 * 0 - Just sent the acc response
4089 * 1 - Sent the acc response and waited for name server completion
4092 lpfc_els_rcv_rscn(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
4093 struct lpfc_nodelist *ndlp)
4095 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4096 struct lpfc_hba *phba = vport->phba;
4097 struct lpfc_dmabuf *pcmd;
4098 uint32_t *lp, *datap;
4100 uint32_t payload_len, length, nportid, *cmd;
4102 int rscn_id = 0, hba_id = 0;
4105 icmd = &cmdiocb->iocb;
4106 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
4107 lp = (uint32_t *) pcmd->virt;
4109 payload_len = be32_to_cpu(*lp++ & ~ELS_CMD_MASK);
4110 payload_len -= sizeof(uint32_t); /* take off word 0 */
4112 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
4113 "0214 RSCN received Data: x%x x%x x%x x%x\n",
4114 vport->fc_flag, payload_len, *lp,
4115 vport->fc_rscn_id_cnt);
4117 /* Send an RSCN event to the management application */
4118 lpfc_send_rscn_event(vport, cmdiocb);
4120 for (i = 0; i < payload_len/sizeof(uint32_t); i++)
4121 fc_host_post_event(shost, fc_get_event_number(),
4122 FCH_EVT_RSCN, lp[i]);
4124 /* If we are about to begin discovery, just ACC the RSCN.
4125 * Discovery processing will satisfy it.
4127 if (vport->port_state <= LPFC_NS_QRY) {
4128 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
4129 "RCV RSCN ignore: did:x%x/ste:x%x flg:x%x",
4130 ndlp->nlp_DID, vport->port_state, ndlp->nlp_flag);
4132 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
4136 /* If this RSCN just contains NPortIDs for other vports on this HBA,
4137 * just ACC and ignore it.
4139 if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
4140 !(vport->cfg_peer_port_login)) {
4145 nportid = ((be32_to_cpu(nportid)) & Mask_DID);
4146 i -= sizeof(uint32_t);
4148 if (lpfc_find_vport_by_did(phba, nportid))
4151 if (rscn_id == hba_id) {
4152 /* ALL NPortIDs in RSCN are on HBA */
4153 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
4155 "Data: x%x x%x x%x x%x\n",
4156 vport->fc_flag, payload_len,
4157 *lp, vport->fc_rscn_id_cnt);
4158 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
4159 "RCV RSCN vport: did:x%x/ste:x%x flg:x%x",
4160 ndlp->nlp_DID, vport->port_state,
4163 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb,
4169 spin_lock_irq(shost->host_lock);
4170 if (vport->fc_rscn_flush) {
4171 /* Another thread is walking fc_rscn_id_list on this vport */
4172 vport->fc_flag |= FC_RSCN_DISCOVERY;
4173 spin_unlock_irq(shost->host_lock);
4175 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
4178 /* Indicate we are walking fc_rscn_id_list on this vport */
4179 vport->fc_rscn_flush = 1;
4180 spin_unlock_irq(shost->host_lock);
4181 /* Get the array count after successfully have the token */
4182 rscn_cnt = vport->fc_rscn_id_cnt;
4183 /* If we are already processing an RSCN, save the received
4184 * RSCN payload buffer, cmdiocb->context2 to process later.
4186 if (vport->fc_flag & (FC_RSCN_MODE | FC_NDISC_ACTIVE)) {
4187 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
4188 "RCV RSCN defer: did:x%x/ste:x%x flg:x%x",
4189 ndlp->nlp_DID, vport->port_state, ndlp->nlp_flag);
4191 spin_lock_irq(shost->host_lock);
4192 vport->fc_flag |= FC_RSCN_DEFERRED;
4193 if ((rscn_cnt < FC_MAX_HOLD_RSCN) &&
4194 !(vport->fc_flag & FC_RSCN_DISCOVERY)) {
4195 vport->fc_flag |= FC_RSCN_MODE;
4196 spin_unlock_irq(shost->host_lock);
4198 cmd = vport->fc_rscn_id_list[rscn_cnt-1]->virt;
4199 length = be32_to_cpu(*cmd & ~ELS_CMD_MASK);
4202 (payload_len + length <= LPFC_BPL_SIZE)) {
4203 *cmd &= ELS_CMD_MASK;
4204 *cmd |= cpu_to_be32(payload_len + length);
4205 memcpy(((uint8_t *)cmd) + length, lp,
4208 vport->fc_rscn_id_list[rscn_cnt] = pcmd;
4209 vport->fc_rscn_id_cnt++;
4210 /* If we zero, cmdiocb->context2, the calling
4211 * routine will not try to free it.
4213 cmdiocb->context2 = NULL;
4216 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
4217 "0235 Deferred RSCN "
4218 "Data: x%x x%x x%x\n",
4219 vport->fc_rscn_id_cnt, vport->fc_flag,
4222 vport->fc_flag |= FC_RSCN_DISCOVERY;
4223 spin_unlock_irq(shost->host_lock);
4224 /* ReDiscovery RSCN */
4225 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
4226 "0234 ReDiscovery RSCN "
4227 "Data: x%x x%x x%x\n",
4228 vport->fc_rscn_id_cnt, vport->fc_flag,
4231 /* Indicate we are done walking fc_rscn_id_list on this vport */
4232 vport->fc_rscn_flush = 0;
4234 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
4235 /* send RECOVERY event for ALL nodes that match RSCN payload */
4236 lpfc_rscn_recovery_check(vport);
4237 spin_lock_irq(shost->host_lock);
4238 vport->fc_flag &= ~FC_RSCN_DEFERRED;
4239 spin_unlock_irq(shost->host_lock);
4242 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
4243 "RCV RSCN: did:x%x/ste:x%x flg:x%x",
4244 ndlp->nlp_DID, vport->port_state, ndlp->nlp_flag);
4246 spin_lock_irq(shost->host_lock);
4247 vport->fc_flag |= FC_RSCN_MODE;
4248 spin_unlock_irq(shost->host_lock);
4249 vport->fc_rscn_id_list[vport->fc_rscn_id_cnt++] = pcmd;
4250 /* Indicate we are done walking fc_rscn_id_list on this vport */
4251 vport->fc_rscn_flush = 0;
4253 * If we zero, cmdiocb->context2, the calling routine will
4254 * not try to free it.
4256 cmdiocb->context2 = NULL;
4257 lpfc_set_disctmo(vport);
4259 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
4260 /* send RECOVERY event for ALL nodes that match RSCN payload */
4261 lpfc_rscn_recovery_check(vport);
4262 return lpfc_els_handle_rscn(vport);
4266 * lpfc_els_handle_rscn - Handle rscn for a vport
4267 * @vport: pointer to a host virtual N_Port data structure.
4269 * This routine handles the Registration State Configuration Notification
4270 * (RSCN) for a @vport. If login to NameServer does not exist, a new ndlp shall
4271 * be created and a Port Login (PLOGI) to the NameServer is issued. Otherwise,
4272 * if the ndlp to NameServer exists, a Common Transport (CT) command to the
4273 * NameServer shall be issued. If CT command to the NameServer fails to be
4274 * issued, the lpfc_els_flush_rscn() routine shall be invoked to clean up any
4275 * RSCN activities with the @vport.
4278 * 0 - Cleaned up rscn on the @vport
4279 * 1 - Wait for plogi to name server before proceed
4282 lpfc_els_handle_rscn(struct lpfc_vport *vport)
4284 struct lpfc_nodelist *ndlp;
4285 struct lpfc_hba *phba = vport->phba;
4287 /* Ignore RSCN if the port is being torn down. */
4288 if (vport->load_flag & FC_UNLOADING) {
4289 lpfc_els_flush_rscn(vport);
4293 /* Start timer for RSCN processing */
4294 lpfc_set_disctmo(vport);
4296 /* RSCN processed */
4297 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
4298 "0215 RSCN processed Data: x%x x%x x%x x%x\n",
4299 vport->fc_flag, 0, vport->fc_rscn_id_cnt,
4302 /* To process RSCN, first compare RSCN data with NameServer */
4303 vport->fc_ns_retry = 0;
4304 vport->num_disc_nodes = 0;
4306 ndlp = lpfc_findnode_did(vport, NameServer_DID);
4307 if (ndlp && NLP_CHK_NODE_ACT(ndlp)
4308 && ndlp->nlp_state == NLP_STE_UNMAPPED_NODE) {
4309 /* Good ndlp, issue CT Request to NameServer */
4310 if (lpfc_ns_cmd(vport, SLI_CTNS_GID_FT, 0, 0) == 0)
4311 /* Wait for NameServer query cmpl before we can
4315 /* If login to NameServer does not exist, issue one */
4316 /* Good status, issue PLOGI to NameServer */
4317 ndlp = lpfc_findnode_did(vport, NameServer_DID);
4318 if (ndlp && NLP_CHK_NODE_ACT(ndlp))
4319 /* Wait for NameServer login cmpl before we can
4324 ndlp = lpfc_enable_node(vport, ndlp,
4325 NLP_STE_PLOGI_ISSUE);
4327 lpfc_els_flush_rscn(vport);
4330 ndlp->nlp_prev_state = NLP_STE_UNUSED_NODE;
4332 ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL);
4334 lpfc_els_flush_rscn(vport);
4337 lpfc_nlp_init(vport, ndlp, NameServer_DID);
4338 ndlp->nlp_prev_state = ndlp->nlp_state;
4339 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
4341 ndlp->nlp_type |= NLP_FABRIC;
4342 lpfc_issue_els_plogi(vport, NameServer_DID, 0);
4343 /* Wait for NameServer login cmpl before we can
4349 lpfc_els_flush_rscn(vport);
4354 * lpfc_els_rcv_flogi - Process an unsolicited flogi iocb
4355 * @vport: pointer to a host virtual N_Port data structure.
4356 * @cmdiocb: pointer to lpfc command iocb data structure.
4357 * @ndlp: pointer to a node-list data structure.
4359 * This routine processes Fabric Login (FLOGI) IOCB received as an ELS
4360 * unsolicited event. An unsolicited FLOGI can be received in a point-to-
4361 * point topology. As an unsolicited FLOGI should not be received in a loop
4362 * mode, any unsolicited FLOGI received in loop mode shall be ignored. The
4363 * lpfc_check_sparm() routine is invoked to check the parameters in the
4364 * unsolicited FLOGI. If parameters validation failed, the routine
4365 * lpfc_els_rsp_reject() shall be called with reject reason code set to
4366 * LSEXP_SPARM_OPTIONS to reject the FLOGI. Otherwise, the Port WWN in the
4367 * FLOGI shall be compared with the Port WWN of the @vport to determine who
4368 * will initiate PLOGI. The higher lexicographical value party shall has
4369 * higher priority (as the winning port) and will initiate PLOGI and
4370 * communicate Port_IDs (Addresses) for both nodes in PLOGI. The result
4371 * of this will be marked in the @vport fc_flag field with FC_PT2PT_PLOGI
4372 * and then the lpfc_els_rsp_acc() routine is invoked to accept the FLOGI.
4375 * 0 - Successfully processed the unsolicited flogi
4376 * 1 - Failed to process the unsolicited flogi
4379 lpfc_els_rcv_flogi(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
4380 struct lpfc_nodelist *ndlp)
4382 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4383 struct lpfc_hba *phba = vport->phba;
4384 struct lpfc_dmabuf *pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
4385 uint32_t *lp = (uint32_t *) pcmd->virt;
4386 IOCB_t *icmd = &cmdiocb->iocb;
4387 struct serv_parm *sp;
4394 sp = (struct serv_parm *) lp;
4396 /* FLOGI received */
4398 lpfc_set_disctmo(vport);
4400 if (phba->fc_topology == TOPOLOGY_LOOP) {
4401 /* We should never receive a FLOGI in loop mode, ignore it */
4402 did = icmd->un.elsreq64.remoteID;
4404 /* An FLOGI ELS command <elsCmd> was received from DID <did> in
4406 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
4407 "0113 An FLOGI ELS command x%x was "
4408 "received from DID x%x in Loop Mode\n",
4415 if ((lpfc_check_sparm(vport, ndlp, sp, CLASS3, 1))) {
4416 /* For a FLOGI we accept, then if our portname is greater
4417 * then the remote portname we initiate Nport login.
4420 rc = memcmp(&vport->fc_portname, &sp->portName,
4421 sizeof(struct lpfc_name));
4424 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
4428 lpfc_linkdown(phba);
4429 lpfc_init_link(phba, mbox,
4431 phba->cfg_link_speed);
4432 mbox->u.mb.un.varInitLnk.lipsr_AL_PA = 0;
4433 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
4434 mbox->vport = vport;
4435 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
4436 lpfc_set_loopback_flag(phba);
4437 if (rc == MBX_NOT_FINISHED) {
4438 mempool_free(mbox, phba->mbox_mem_pool);
4441 } else if (rc > 0) { /* greater than */
4442 spin_lock_irq(shost->host_lock);
4443 vport->fc_flag |= FC_PT2PT_PLOGI;
4444 spin_unlock_irq(shost->host_lock);
4446 spin_lock_irq(shost->host_lock);
4447 vport->fc_flag |= FC_PT2PT;
4448 vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
4449 spin_unlock_irq(shost->host_lock);
4451 /* Reject this request because invalid parameters */
4452 stat.un.b.lsRjtRsvd0 = 0;
4453 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
4454 stat.un.b.lsRjtRsnCodeExp = LSEXP_SPARM_OPTIONS;
4455 stat.un.b.vendorUnique = 0;
4456 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
4462 lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb, ndlp, NULL);
4468 * lpfc_els_rcv_rnid - Process an unsolicited rnid iocb
4469 * @vport: pointer to a host virtual N_Port data structure.
4470 * @cmdiocb: pointer to lpfc command iocb data structure.
4471 * @ndlp: pointer to a node-list data structure.
4473 * This routine processes Request Node Identification Data (RNID) IOCB
4474 * received as an ELS unsolicited event. Only when the RNID specified format
4475 * 0x0 or 0xDF (Topology Discovery Specific Node Identification Data)
4476 * present, this routine will invoke the lpfc_els_rsp_rnid_acc() routine to
4477 * Accept (ACC) the RNID ELS command. All the other RNID formats are
4478 * rejected by invoking the lpfc_els_rsp_reject() routine.
4481 * 0 - Successfully processed rnid iocb (currently always return 0)
4484 lpfc_els_rcv_rnid(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
4485 struct lpfc_nodelist *ndlp)
4487 struct lpfc_dmabuf *pcmd;
4494 icmd = &cmdiocb->iocb;
4495 did = icmd->un.elsreq64.remoteID;
4496 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
4497 lp = (uint32_t *) pcmd->virt;
4504 switch (rn->Format) {
4506 case RNID_TOPOLOGY_DISC:
4508 lpfc_els_rsp_rnid_acc(vport, rn->Format, cmdiocb, ndlp);
4511 /* Reject this request because format not supported */
4512 stat.un.b.lsRjtRsvd0 = 0;
4513 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
4514 stat.un.b.lsRjtRsnCodeExp = LSEXP_CANT_GIVE_DATA;
4515 stat.un.b.vendorUnique = 0;
4516 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
4523 * lpfc_els_rcv_lirr - Process an unsolicited lirr iocb
4524 * @vport: pointer to a host virtual N_Port data structure.
4525 * @cmdiocb: pointer to lpfc command iocb data structure.
4526 * @ndlp: pointer to a node-list data structure.
4528 * This routine processes a Link Incident Report Registration(LIRR) IOCB
4529 * received as an ELS unsolicited event. Currently, this function just invokes
4530 * the lpfc_els_rsp_reject() routine to reject the LIRR IOCB unconditionally.
4533 * 0 - Successfully processed lirr iocb (currently always return 0)
4536 lpfc_els_rcv_lirr(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
4537 struct lpfc_nodelist *ndlp)
4541 /* For now, unconditionally reject this command */
4542 stat.un.b.lsRjtRsvd0 = 0;
4543 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
4544 stat.un.b.lsRjtRsnCodeExp = LSEXP_CANT_GIVE_DATA;
4545 stat.un.b.vendorUnique = 0;
4546 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
4551 * lpfc_els_rcv_rrq - Process an unsolicited rrq iocb
4552 * @vport: pointer to a host virtual N_Port data structure.
4553 * @cmdiocb: pointer to lpfc command iocb data structure.
4554 * @ndlp: pointer to a node-list data structure.
4556 * This routine processes a Reinstate Recovery Qualifier (RRQ) IOCB
4557 * received as an ELS unsolicited event. A request to RRQ shall only
4558 * be accepted if the Originator Nx_Port N_Port_ID or the Responder
4559 * Nx_Port N_Port_ID of the target Exchange is the same as the
4560 * N_Port_ID of the Nx_Port that makes the request. If the RRQ is
4561 * not accepted, an LS_RJT with reason code "Unable to perform
4562 * command request" and reason code explanation "Invalid Originator
4563 * S_ID" shall be returned. For now, we just unconditionally accept
4564 * RRQ from the target.
4567 lpfc_els_rcv_rrq(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
4568 struct lpfc_nodelist *ndlp)
4570 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
4574 * lpfc_els_rsp_rps_acc - Completion callbk func for MBX_READ_LNK_STAT mbox cmd
4575 * @phba: pointer to lpfc hba data structure.
4576 * @pmb: pointer to the driver internal queue element for mailbox command.
4578 * This routine is the completion callback function for the MBX_READ_LNK_STAT
4579 * mailbox command. This callback function is to actually send the Accept
4580 * (ACC) response to a Read Port Status (RPS) unsolicited IOCB event. It
4581 * collects the link statistics from the completion of the MBX_READ_LNK_STAT
4582 * mailbox command, constructs the RPS response with the link statistics
4583 * collected, and then invokes the lpfc_sli_issue_iocb() routine to send ACC
4584 * response to the RPS.
4586 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
4587 * will be incremented by 1 for holding the ndlp and the reference to ndlp
4588 * will be stored into the context1 field of the IOCB for the completion
4589 * callback function to the RPS Accept Response ELS IOCB command.
4593 lpfc_els_rsp_rps_acc(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
4599 struct lpfc_iocbq *elsiocb;
4600 struct lpfc_nodelist *ndlp;
4601 uint16_t xri, status;
4606 ndlp = (struct lpfc_nodelist *) pmb->context2;
4607 xri = (uint16_t) ((unsigned long)(pmb->context1));
4608 pmb->context1 = NULL;
4609 pmb->context2 = NULL;
4611 if (mb->mbxStatus) {
4612 mempool_free(pmb, phba->mbox_mem_pool);
4616 cmdsize = sizeof(RPS_RSP) + sizeof(uint32_t);
4617 mempool_free(pmb, phba->mbox_mem_pool);
4618 elsiocb = lpfc_prep_els_iocb(phba->pport, 0, cmdsize,
4619 lpfc_max_els_tries, ndlp,
4620 ndlp->nlp_DID, ELS_CMD_ACC);
4622 /* Decrement the ndlp reference count from previous mbox command */
4628 icmd = &elsiocb->iocb;
4629 icmd->ulpContext = xri;
4631 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
4632 *((uint32_t *) (pcmd)) = ELS_CMD_ACC;
4633 pcmd += sizeof(uint32_t); /* Skip past command */
4634 rps_rsp = (RPS_RSP *)pcmd;
4636 if (phba->fc_topology != TOPOLOGY_LOOP)
4640 if (phba->pport->fc_flag & FC_FABRIC)
4644 rps_rsp->portStatus = cpu_to_be16(status);
4645 rps_rsp->linkFailureCnt = cpu_to_be32(mb->un.varRdLnk.linkFailureCnt);
4646 rps_rsp->lossSyncCnt = cpu_to_be32(mb->un.varRdLnk.lossSyncCnt);
4647 rps_rsp->lossSignalCnt = cpu_to_be32(mb->un.varRdLnk.lossSignalCnt);
4648 rps_rsp->primSeqErrCnt = cpu_to_be32(mb->un.varRdLnk.primSeqErrCnt);
4649 rps_rsp->invalidXmitWord = cpu_to_be32(mb->un.varRdLnk.invalidXmitWord);
4650 rps_rsp->crcCnt = cpu_to_be32(mb->un.varRdLnk.crcCnt);
4651 /* Xmit ELS RPS ACC response tag <ulpIoTag> */
4652 lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_ELS,
4653 "0118 Xmit ELS RPS ACC response tag x%x xri x%x, "
4654 "did x%x, nlp_flag x%x, nlp_state x%x, rpi x%x\n",
4655 elsiocb->iotag, elsiocb->iocb.ulpContext,
4656 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
4658 elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp;
4659 phba->fc_stat.elsXmitACC++;
4660 if (lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0) == IOCB_ERROR)
4661 lpfc_els_free_iocb(phba, elsiocb);
4666 * lpfc_els_rcv_rps - Process an unsolicited rps iocb
4667 * @vport: pointer to a host virtual N_Port data structure.
4668 * @cmdiocb: pointer to lpfc command iocb data structure.
4669 * @ndlp: pointer to a node-list data structure.
4671 * This routine processes Read Port Status (RPS) IOCB received as an
4672 * ELS unsolicited event. It first checks the remote port state. If the
4673 * remote port is not in NLP_STE_UNMAPPED_NODE state or NLP_STE_MAPPED_NODE
4674 * state, it invokes the lpfc_els_rsp_reject() routine to send the reject
4675 * response. Otherwise, it issue the MBX_READ_LNK_STAT mailbox command
4676 * for reading the HBA link statistics. It is for the callback function,
4677 * lpfc_els_rsp_rps_acc(), set to the MBX_READ_LNK_STAT mailbox command
4678 * to actually sending out RPS Accept (ACC) response.
4681 * 0 - Successfully processed rps iocb (currently always return 0)
4684 lpfc_els_rcv_rps(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
4685 struct lpfc_nodelist *ndlp)
4687 struct lpfc_hba *phba = vport->phba;
4691 struct lpfc_dmabuf *pcmd;
4695 if ((ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) &&
4696 (ndlp->nlp_state != NLP_STE_MAPPED_NODE))
4697 /* reject the unsolicited RPS request and done with it */
4700 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
4701 lp = (uint32_t *) pcmd->virt;
4702 flag = (be32_to_cpu(*lp++) & 0xf);
4706 ((flag == 1) && (be32_to_cpu(rps->un.portNum) == 0)) ||
4707 ((flag == 2) && (memcmp(&rps->un.portName, &vport->fc_portname,
4708 sizeof(struct lpfc_name)) == 0))) {
4710 printk("Fix me....\n");
4712 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_ATOMIC);
4714 lpfc_read_lnk_stat(phba, mbox);
4716 (void *)((unsigned long) cmdiocb->iocb.ulpContext);
4717 mbox->context2 = lpfc_nlp_get(ndlp);
4718 mbox->vport = vport;
4719 mbox->mbox_cmpl = lpfc_els_rsp_rps_acc;
4720 if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT)
4721 != MBX_NOT_FINISHED)
4722 /* Mbox completion will send ELS Response */
4724 /* Decrement reference count used for the failed mbox
4728 mempool_free(mbox, phba->mbox_mem_pool);
4733 /* issue rejection response */
4734 stat.un.b.lsRjtRsvd0 = 0;
4735 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
4736 stat.un.b.lsRjtRsnCodeExp = LSEXP_CANT_GIVE_DATA;
4737 stat.un.b.vendorUnique = 0;
4738 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
4743 * lpfc_els_rsp_rpl_acc - Issue an accept rpl els command
4744 * @vport: pointer to a host virtual N_Port data structure.
4745 * @cmdsize: size of the ELS command.
4746 * @oldiocb: pointer to the original lpfc command iocb data structure.
4747 * @ndlp: pointer to a node-list data structure.
4749 * This routine issuees an Accept (ACC) Read Port List (RPL) ELS command.
4750 * It is to be called by the lpfc_els_rcv_rpl() routine to accept the RPL.
4752 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
4753 * will be incremented by 1 for holding the ndlp and the reference to ndlp
4754 * will be stored into the context1 field of the IOCB for the completion
4755 * callback function to the RPL Accept Response ELS command.
4758 * 0 - Successfully issued ACC RPL ELS command
4759 * 1 - Failed to issue ACC RPL ELS command
4762 lpfc_els_rsp_rpl_acc(struct lpfc_vport *vport, uint16_t cmdsize,
4763 struct lpfc_iocbq *oldiocb, struct lpfc_nodelist *ndlp)
4765 struct lpfc_hba *phba = vport->phba;
4766 IOCB_t *icmd, *oldcmd;
4768 struct lpfc_iocbq *elsiocb;
4771 elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp,
4772 ndlp->nlp_DID, ELS_CMD_ACC);
4777 icmd = &elsiocb->iocb;
4778 oldcmd = &oldiocb->iocb;
4779 icmd->ulpContext = oldcmd->ulpContext; /* Xri */
4781 pcmd = (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
4782 *((uint32_t *) (pcmd)) = ELS_CMD_ACC;
4783 pcmd += sizeof(uint16_t);
4784 *((uint16_t *)(pcmd)) = be16_to_cpu(cmdsize);
4785 pcmd += sizeof(uint16_t);
4787 /* Setup the RPL ACC payload */
4788 rpl_rsp.listLen = be32_to_cpu(1);
4790 rpl_rsp.port_num_blk.portNum = 0;
4791 rpl_rsp.port_num_blk.portID = be32_to_cpu(vport->fc_myDID);
4792 memcpy(&rpl_rsp.port_num_blk.portName, &vport->fc_portname,
4793 sizeof(struct lpfc_name));
4794 memcpy(pcmd, &rpl_rsp, cmdsize - sizeof(uint32_t));
4795 /* Xmit ELS RPL ACC response tag <ulpIoTag> */
4796 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
4797 "0120 Xmit ELS RPL ACC response tag x%x "
4798 "xri x%x, did x%x, nlp_flag x%x, nlp_state x%x, "
4800 elsiocb->iotag, elsiocb->iocb.ulpContext,
4801 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
4803 elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp;
4804 phba->fc_stat.elsXmitACC++;
4805 if (lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0) ==
4807 lpfc_els_free_iocb(phba, elsiocb);
4814 * lpfc_els_rcv_rpl - Process an unsolicited rpl iocb
4815 * @vport: pointer to a host virtual N_Port data structure.
4816 * @cmdiocb: pointer to lpfc command iocb data structure.
4817 * @ndlp: pointer to a node-list data structure.
4819 * This routine processes Read Port List (RPL) IOCB received as an ELS
4820 * unsolicited event. It first checks the remote port state. If the remote
4821 * port is not in NLP_STE_UNMAPPED_NODE and NLP_STE_MAPPED_NODE states, it
4822 * invokes the lpfc_els_rsp_reject() routine to send reject response.
4823 * Otherwise, this routine then invokes the lpfc_els_rsp_rpl_acc() routine
4824 * to accept the RPL.
4827 * 0 - Successfully processed rpl iocb (currently always return 0)
4830 lpfc_els_rcv_rpl(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
4831 struct lpfc_nodelist *ndlp)
4833 struct lpfc_dmabuf *pcmd;
4840 if ((ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) &&
4841 (ndlp->nlp_state != NLP_STE_MAPPED_NODE)) {
4842 /* issue rejection response */
4843 stat.un.b.lsRjtRsvd0 = 0;
4844 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
4845 stat.un.b.lsRjtRsnCodeExp = LSEXP_CANT_GIVE_DATA;
4846 stat.un.b.vendorUnique = 0;
4847 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
4849 /* rejected the unsolicited RPL request and done with it */
4853 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
4854 lp = (uint32_t *) pcmd->virt;
4855 rpl = (RPL *) (lp + 1);
4857 maxsize = be32_to_cpu(rpl->maxsize);
4859 /* We support only one port */
4860 if ((rpl->index == 0) &&
4862 ((maxsize * sizeof(uint32_t)) >= sizeof(RPL_RSP)))) {
4863 cmdsize = sizeof(uint32_t) + sizeof(RPL_RSP);
4865 cmdsize = sizeof(uint32_t) + maxsize * sizeof(uint32_t);
4867 lpfc_els_rsp_rpl_acc(vport, cmdsize, cmdiocb, ndlp);
4873 * lpfc_els_rcv_farp - Process an unsolicited farp request els command
4874 * @vport: pointer to a virtual N_Port data structure.
4875 * @cmdiocb: pointer to lpfc command iocb data structure.
4876 * @ndlp: pointer to a node-list data structure.
4878 * This routine processes Fibre Channel Address Resolution Protocol
4879 * (FARP) Request IOCB received as an ELS unsolicited event. Currently,
4880 * the lpfc driver only supports matching on WWPN or WWNN for FARP. As such,
4881 * FARP_MATCH_PORT flag and FARP_MATCH_NODE flag are checked against the
4882 * Match Flag in the FARP request IOCB: if FARP_MATCH_PORT flag is set, the
4883 * remote PortName is compared against the FC PortName stored in the @vport
4884 * data structure; if FARP_MATCH_NODE flag is set, the remote NodeName is
4885 * compared against the FC NodeName stored in the @vport data structure.
4886 * If any of these matches and the FARP_REQUEST_FARPR flag is set in the
4887 * FARP request IOCB Response Flag, the lpfc_issue_els_farpr() routine is
4888 * invoked to send out FARP Response to the remote node. Before sending the
4889 * FARP Response, however, the FARP_REQUEST_PLOGI flag is check in the FARP
4890 * request IOCB Response Flag and, if it is set, the lpfc_issue_els_plogi()
4891 * routine is invoked to log into the remote port first.
4894 * 0 - Either the FARP Match Mode not supported or successfully processed
4897 lpfc_els_rcv_farp(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
4898 struct lpfc_nodelist *ndlp)
4900 struct lpfc_dmabuf *pcmd;
4904 uint32_t cmd, cnt, did;
4906 icmd = &cmdiocb->iocb;
4907 did = icmd->un.elsreq64.remoteID;
4908 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
4909 lp = (uint32_t *) pcmd->virt;
4913 /* FARP-REQ received from DID <did> */
4914 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
4915 "0601 FARP-REQ received from DID x%x\n", did);
4916 /* We will only support match on WWPN or WWNN */
4917 if (fp->Mflags & ~(FARP_MATCH_NODE | FARP_MATCH_PORT)) {
4922 /* If this FARP command is searching for my portname */
4923 if (fp->Mflags & FARP_MATCH_PORT) {
4924 if (memcmp(&fp->RportName, &vport->fc_portname,
4925 sizeof(struct lpfc_name)) == 0)
4929 /* If this FARP command is searching for my nodename */
4930 if (fp->Mflags & FARP_MATCH_NODE) {
4931 if (memcmp(&fp->RnodeName, &vport->fc_nodename,
4932 sizeof(struct lpfc_name)) == 0)
4937 if ((ndlp->nlp_state == NLP_STE_UNMAPPED_NODE) ||
4938 (ndlp->nlp_state == NLP_STE_MAPPED_NODE)) {
4939 /* Log back into the node before sending the FARP. */
4940 if (fp->Rflags & FARP_REQUEST_PLOGI) {
4941 ndlp->nlp_prev_state = ndlp->nlp_state;
4942 lpfc_nlp_set_state(vport, ndlp,
4943 NLP_STE_PLOGI_ISSUE);
4944 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
4947 /* Send a FARP response to that node */
4948 if (fp->Rflags & FARP_REQUEST_FARPR)
4949 lpfc_issue_els_farpr(vport, did, 0);
4956 * lpfc_els_rcv_farpr - Process an unsolicited farp response iocb
4957 * @vport: pointer to a host virtual N_Port data structure.
4958 * @cmdiocb: pointer to lpfc command iocb data structure.
4959 * @ndlp: pointer to a node-list data structure.
4961 * This routine processes Fibre Channel Address Resolution Protocol
4962 * Response (FARPR) IOCB received as an ELS unsolicited event. It simply
4963 * invokes the lpfc_els_rsp_acc() routine to the remote node to accept
4964 * the FARP response request.
4967 * 0 - Successfully processed FARPR IOCB (currently always return 0)
4970 lpfc_els_rcv_farpr(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
4971 struct lpfc_nodelist *ndlp)
4973 struct lpfc_dmabuf *pcmd;
4978 icmd = &cmdiocb->iocb;
4979 did = icmd->un.elsreq64.remoteID;
4980 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
4981 lp = (uint32_t *) pcmd->virt;
4984 /* FARP-RSP received from DID <did> */
4985 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
4986 "0600 FARP-RSP received from DID x%x\n", did);
4987 /* ACCEPT the Farp resp request */
4988 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
4994 * lpfc_els_rcv_fan - Process an unsolicited fan iocb command
4995 * @vport: pointer to a host virtual N_Port data structure.
4996 * @cmdiocb: pointer to lpfc command iocb data structure.
4997 * @fan_ndlp: pointer to a node-list data structure.
4999 * This routine processes a Fabric Address Notification (FAN) IOCB
5000 * command received as an ELS unsolicited event. The FAN ELS command will
5001 * only be processed on a physical port (i.e., the @vport represents the
5002 * physical port). The fabric NodeName and PortName from the FAN IOCB are
5003 * compared against those in the phba data structure. If any of those is
5004 * different, the lpfc_initial_flogi() routine is invoked to initialize
5005 * Fabric Login (FLOGI) to the fabric to start the discover over. Otherwise,
5006 * if both of those are identical, the lpfc_issue_fabric_reglogin() routine
5007 * is invoked to register login to the fabric.
5010 * 0 - Successfully processed fan iocb (currently always return 0).
5013 lpfc_els_rcv_fan(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
5014 struct lpfc_nodelist *fan_ndlp)
5016 struct lpfc_hba *phba = vport->phba;
5020 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, "0265 FAN received\n");
5021 lp = (uint32_t *)((struct lpfc_dmabuf *)cmdiocb->context2)->virt;
5023 /* FAN received; Fan does not have a reply sequence */
5024 if ((vport == phba->pport) &&
5025 (vport->port_state == LPFC_LOCAL_CFG_LINK)) {
5026 if ((memcmp(&phba->fc_fabparam.nodeName, &fp->FnodeName,
5027 sizeof(struct lpfc_name))) ||
5028 (memcmp(&phba->fc_fabparam.portName, &fp->FportName,
5029 sizeof(struct lpfc_name)))) {
5030 /* This port has switched fabrics. FLOGI is required */
5031 lpfc_initial_flogi(vport);
5033 /* FAN verified - skip FLOGI */
5034 vport->fc_myDID = vport->fc_prevDID;
5035 if (phba->sli_rev < LPFC_SLI_REV4)
5036 lpfc_issue_fabric_reglogin(vport);
5038 lpfc_issue_reg_vfi(vport);
5045 * lpfc_els_timeout - Handler funciton to the els timer
5046 * @ptr: holder for the timer function associated data.
5048 * This routine is invoked by the ELS timer after timeout. It posts the ELS
5049 * timer timeout event by setting the WORKER_ELS_TMO bit to the work port
5050 * event bitmap and then invokes the lpfc_worker_wake_up() routine to wake
5051 * up the worker thread. It is for the worker thread to invoke the routine
5052 * lpfc_els_timeout_handler() to work on the posted event WORKER_ELS_TMO.
5055 lpfc_els_timeout(unsigned long ptr)
5057 struct lpfc_vport *vport = (struct lpfc_vport *) ptr;
5058 struct lpfc_hba *phba = vport->phba;
5059 uint32_t tmo_posted;
5060 unsigned long iflag;
5062 spin_lock_irqsave(&vport->work_port_lock, iflag);
5063 tmo_posted = vport->work_port_events & WORKER_ELS_TMO;
5065 vport->work_port_events |= WORKER_ELS_TMO;
5066 spin_unlock_irqrestore(&vport->work_port_lock, iflag);
5069 lpfc_worker_wake_up(phba);
5074 * lpfc_els_timeout_handler - Process an els timeout event
5075 * @vport: pointer to a virtual N_Port data structure.
5077 * This routine is the actual handler function that processes an ELS timeout
5078 * event. It walks the ELS ring to get and abort all the IOCBs (except the
5079 * ABORT/CLOSE/FARP/FARPR/FDISC), which are associated with the @vport by
5080 * invoking the lpfc_sli_issue_abort_iotag() routine.
5083 lpfc_els_timeout_handler(struct lpfc_vport *vport)
5085 struct lpfc_hba *phba = vport->phba;
5086 struct lpfc_sli_ring *pring;
5087 struct lpfc_iocbq *tmp_iocb, *piocb;
5089 struct lpfc_dmabuf *pcmd;
5090 uint32_t els_command = 0;
5092 uint32_t remote_ID = 0xffffffff;
5094 spin_lock_irq(&phba->hbalock);
5095 timeout = (uint32_t)(phba->fc_ratov << 1);
5097 pring = &phba->sli.ring[LPFC_ELS_RING];
5099 list_for_each_entry_safe(piocb, tmp_iocb, &pring->txcmplq, list) {
5102 if ((piocb->iocb_flag & LPFC_IO_LIBDFC) != 0 ||
5103 piocb->iocb.ulpCommand == CMD_ABORT_XRI_CN ||
5104 piocb->iocb.ulpCommand == CMD_CLOSE_XRI_CN)
5107 if (piocb->vport != vport)
5110 pcmd = (struct lpfc_dmabuf *) piocb->context2;
5112 els_command = *(uint32_t *) (pcmd->virt);
5114 if (els_command == ELS_CMD_FARP ||
5115 els_command == ELS_CMD_FARPR ||
5116 els_command == ELS_CMD_FDISC)
5119 if (piocb->drvrTimeout > 0) {
5120 if (piocb->drvrTimeout >= timeout)
5121 piocb->drvrTimeout -= timeout;
5123 piocb->drvrTimeout = 0;
5127 remote_ID = 0xffffffff;
5128 if (cmd->ulpCommand != CMD_GEN_REQUEST64_CR)
5129 remote_ID = cmd->un.elsreq64.remoteID;
5131 struct lpfc_nodelist *ndlp;
5132 ndlp = __lpfc_findnode_rpi(vport, cmd->ulpContext);
5133 if (ndlp && NLP_CHK_NODE_ACT(ndlp))
5134 remote_ID = ndlp->nlp_DID;
5136 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
5137 "0127 ELS timeout Data: x%x x%x x%x "
5138 "x%x\n", els_command,
5139 remote_ID, cmd->ulpCommand, cmd->ulpIoTag);
5140 lpfc_sli_issue_abort_iotag(phba, pring, piocb);
5142 spin_unlock_irq(&phba->hbalock);
5144 if (phba->sli.ring[LPFC_ELS_RING].txcmplq_cnt)
5145 mod_timer(&vport->els_tmofunc, jiffies + HZ * timeout);
5149 * lpfc_els_flush_cmd - Clean up the outstanding els commands to a vport
5150 * @vport: pointer to a host virtual N_Port data structure.
5152 * This routine is used to clean up all the outstanding ELS commands on a
5153 * @vport. It first aborts the @vport by invoking lpfc_fabric_abort_vport()
5154 * routine. After that, it walks the ELS transmit queue to remove all the
5155 * IOCBs with the @vport other than the QUE_RING and ABORT/CLOSE IOCBs. For
5156 * the IOCBs with a non-NULL completion callback function, the callback
5157 * function will be invoked with the status set to IOSTAT_LOCAL_REJECT and
5158 * un.ulpWord[4] set to IOERR_SLI_ABORTED. For IOCBs with a NULL completion
5159 * callback function, the IOCB will simply be released. Finally, it walks
5160 * the ELS transmit completion queue to issue an abort IOCB to any transmit
5161 * completion queue IOCB that is associated with the @vport and is not
5162 * an IOCB from libdfc (i.e., the management plane IOCBs that are not
5163 * part of the discovery state machine) out to HBA by invoking the
5164 * lpfc_sli_issue_abort_iotag() routine. Note that this function issues the
5165 * abort IOCB to any transmit completion queueed IOCB, it does not guarantee
5166 * the IOCBs are aborted when this function returns.
5169 lpfc_els_flush_cmd(struct lpfc_vport *vport)
5171 LIST_HEAD(completions);
5172 struct lpfc_hba *phba = vport->phba;
5173 struct lpfc_sli_ring *pring = &phba->sli.ring[LPFC_ELS_RING];
5174 struct lpfc_iocbq *tmp_iocb, *piocb;
5177 lpfc_fabric_abort_vport(vport);
5179 spin_lock_irq(&phba->hbalock);
5180 list_for_each_entry_safe(piocb, tmp_iocb, &pring->txq, list) {
5183 if (piocb->iocb_flag & LPFC_IO_LIBDFC) {
5187 /* Do not flush out the QUE_RING and ABORT/CLOSE iocbs */
5188 if (cmd->ulpCommand == CMD_QUE_RING_BUF_CN ||
5189 cmd->ulpCommand == CMD_QUE_RING_BUF64_CN ||
5190 cmd->ulpCommand == CMD_CLOSE_XRI_CN ||
5191 cmd->ulpCommand == CMD_ABORT_XRI_CN)
5194 if (piocb->vport != vport)
5197 list_move_tail(&piocb->list, &completions);
5201 list_for_each_entry_safe(piocb, tmp_iocb, &pring->txcmplq, list) {
5202 if (piocb->iocb_flag & LPFC_IO_LIBDFC) {
5206 if (piocb->vport != vport)
5209 lpfc_sli_issue_abort_iotag(phba, pring, piocb);
5211 spin_unlock_irq(&phba->hbalock);
5213 /* Cancell all the IOCBs from the completions list */
5214 lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
5221 * lpfc_els_flush_all_cmd - Clean up all the outstanding els commands to a HBA
5222 * @phba: pointer to lpfc hba data structure.
5224 * This routine is used to clean up all the outstanding ELS commands on a
5225 * @phba. It first aborts the @phba by invoking the lpfc_fabric_abort_hba()
5226 * routine. After that, it walks the ELS transmit queue to remove all the
5227 * IOCBs to the @phba other than the QUE_RING and ABORT/CLOSE IOCBs. For
5228 * the IOCBs with the completion callback function associated, the callback
5229 * function will be invoked with the status set to IOSTAT_LOCAL_REJECT and
5230 * un.ulpWord[4] set to IOERR_SLI_ABORTED. For IOCBs without the completion
5231 * callback function associated, the IOCB will simply be released. Finally,
5232 * it walks the ELS transmit completion queue to issue an abort IOCB to any
5233 * transmit completion queue IOCB that is not an IOCB from libdfc (i.e., the
5234 * management plane IOCBs that are not part of the discovery state machine)
5235 * out to HBA by invoking the lpfc_sli_issue_abort_iotag() routine.
5238 lpfc_els_flush_all_cmd(struct lpfc_hba *phba)
5240 LIST_HEAD(completions);
5241 struct lpfc_sli_ring *pring = &phba->sli.ring[LPFC_ELS_RING];
5242 struct lpfc_iocbq *tmp_iocb, *piocb;
5245 lpfc_fabric_abort_hba(phba);
5246 spin_lock_irq(&phba->hbalock);
5247 list_for_each_entry_safe(piocb, tmp_iocb, &pring->txq, list) {
5249 if (piocb->iocb_flag & LPFC_IO_LIBDFC)
5251 /* Do not flush out the QUE_RING and ABORT/CLOSE iocbs */
5252 if (cmd->ulpCommand == CMD_QUE_RING_BUF_CN ||
5253 cmd->ulpCommand == CMD_QUE_RING_BUF64_CN ||
5254 cmd->ulpCommand == CMD_CLOSE_XRI_CN ||
5255 cmd->ulpCommand == CMD_ABORT_XRI_CN)
5257 list_move_tail(&piocb->list, &completions);
5260 list_for_each_entry_safe(piocb, tmp_iocb, &pring->txcmplq, list) {
5261 if (piocb->iocb_flag & LPFC_IO_LIBDFC)
5263 lpfc_sli_issue_abort_iotag(phba, pring, piocb);
5265 spin_unlock_irq(&phba->hbalock);
5267 /* Cancel all the IOCBs from the completions list */
5268 lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
5275 * lpfc_send_els_failure_event - Posts an ELS command failure event
5276 * @phba: Pointer to hba context object.
5277 * @cmdiocbp: Pointer to command iocb which reported error.
5278 * @rspiocbp: Pointer to response iocb which reported error.
5280 * This function sends an event when there is an ELS command
5284 lpfc_send_els_failure_event(struct lpfc_hba *phba,
5285 struct lpfc_iocbq *cmdiocbp,
5286 struct lpfc_iocbq *rspiocbp)
5288 struct lpfc_vport *vport = cmdiocbp->vport;
5289 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
5290 struct lpfc_lsrjt_event lsrjt_event;
5291 struct lpfc_fabric_event_header fabric_event;
5293 struct lpfc_nodelist *ndlp;
5296 ndlp = cmdiocbp->context1;
5297 if (!ndlp || !NLP_CHK_NODE_ACT(ndlp))
5300 if (rspiocbp->iocb.ulpStatus == IOSTAT_LS_RJT) {
5301 lsrjt_event.header.event_type = FC_REG_ELS_EVENT;
5302 lsrjt_event.header.subcategory = LPFC_EVENT_LSRJT_RCV;
5303 memcpy(lsrjt_event.header.wwpn, &ndlp->nlp_portname,
5304 sizeof(struct lpfc_name));
5305 memcpy(lsrjt_event.header.wwnn, &ndlp->nlp_nodename,
5306 sizeof(struct lpfc_name));
5307 pcmd = (uint32_t *) (((struct lpfc_dmabuf *)
5308 cmdiocbp->context2)->virt);
5309 lsrjt_event.command = *pcmd;
5310 stat.un.lsRjtError = be32_to_cpu(rspiocbp->iocb.un.ulpWord[4]);
5311 lsrjt_event.reason_code = stat.un.b.lsRjtRsnCode;
5312 lsrjt_event.explanation = stat.un.b.lsRjtRsnCodeExp;
5313 fc_host_post_vendor_event(shost,
5314 fc_get_event_number(),
5315 sizeof(lsrjt_event),
5316 (char *)&lsrjt_event,
5320 if ((rspiocbp->iocb.ulpStatus == IOSTAT_NPORT_BSY) ||
5321 (rspiocbp->iocb.ulpStatus == IOSTAT_FABRIC_BSY)) {
5322 fabric_event.event_type = FC_REG_FABRIC_EVENT;
5323 if (rspiocbp->iocb.ulpStatus == IOSTAT_NPORT_BSY)
5324 fabric_event.subcategory = LPFC_EVENT_PORT_BUSY;
5326 fabric_event.subcategory = LPFC_EVENT_FABRIC_BUSY;
5327 memcpy(fabric_event.wwpn, &ndlp->nlp_portname,
5328 sizeof(struct lpfc_name));
5329 memcpy(fabric_event.wwnn, &ndlp->nlp_nodename,
5330 sizeof(struct lpfc_name));
5331 fc_host_post_vendor_event(shost,
5332 fc_get_event_number(),
5333 sizeof(fabric_event),
5334 (char *)&fabric_event,
5342 * lpfc_send_els_event - Posts unsolicited els event
5343 * @vport: Pointer to vport object.
5344 * @ndlp: Pointer FC node object.
5345 * @cmd: ELS command code.
5347 * This function posts an event when there is an incoming
5348 * unsolicited ELS command.
5351 lpfc_send_els_event(struct lpfc_vport *vport,
5352 struct lpfc_nodelist *ndlp,
5355 struct lpfc_els_event_header *els_data = NULL;
5356 struct lpfc_logo_event *logo_data = NULL;
5357 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
5359 if (*payload == ELS_CMD_LOGO) {
5360 logo_data = kmalloc(sizeof(struct lpfc_logo_event), GFP_KERNEL);
5362 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
5363 "0148 Failed to allocate memory "
5364 "for LOGO event\n");
5367 els_data = &logo_data->header;
5369 els_data = kmalloc(sizeof(struct lpfc_els_event_header),
5372 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
5373 "0149 Failed to allocate memory "
5378 els_data->event_type = FC_REG_ELS_EVENT;
5381 els_data->subcategory = LPFC_EVENT_PLOGI_RCV;
5384 els_data->subcategory = LPFC_EVENT_PRLO_RCV;
5387 els_data->subcategory = LPFC_EVENT_ADISC_RCV;
5390 els_data->subcategory = LPFC_EVENT_LOGO_RCV;
5391 /* Copy the WWPN in the LOGO payload */
5392 memcpy(logo_data->logo_wwpn, &payload[2],
5393 sizeof(struct lpfc_name));
5399 memcpy(els_data->wwpn, &ndlp->nlp_portname, sizeof(struct lpfc_name));
5400 memcpy(els_data->wwnn, &ndlp->nlp_nodename, sizeof(struct lpfc_name));
5401 if (*payload == ELS_CMD_LOGO) {
5402 fc_host_post_vendor_event(shost,
5403 fc_get_event_number(),
5404 sizeof(struct lpfc_logo_event),
5409 fc_host_post_vendor_event(shost,
5410 fc_get_event_number(),
5411 sizeof(struct lpfc_els_event_header),
5422 * lpfc_els_unsol_buffer - Process an unsolicited event data buffer
5423 * @phba: pointer to lpfc hba data structure.
5424 * @pring: pointer to a SLI ring.
5425 * @vport: pointer to a host virtual N_Port data structure.
5426 * @elsiocb: pointer to lpfc els command iocb data structure.
5428 * This routine is used for processing the IOCB associated with a unsolicited
5429 * event. It first determines whether there is an existing ndlp that matches
5430 * the DID from the unsolicited IOCB. If not, it will create a new one with
5431 * the DID from the unsolicited IOCB. The ELS command from the unsolicited
5432 * IOCB is then used to invoke the proper routine and to set up proper state
5433 * of the discovery state machine.
5436 lpfc_els_unsol_buffer(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
5437 struct lpfc_vport *vport, struct lpfc_iocbq *elsiocb)
5439 struct Scsi_Host *shost;
5440 struct lpfc_nodelist *ndlp;
5443 uint32_t cmd, did, newnode, rjt_err = 0;
5444 IOCB_t *icmd = &elsiocb->iocb;
5446 if (!vport || !(elsiocb->context2))
5450 payload = ((struct lpfc_dmabuf *)elsiocb->context2)->virt;
5452 if ((phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) == 0)
5453 lpfc_post_buffer(phba, pring, 1);
5455 did = icmd->un.rcvels.remoteID;
5456 if (icmd->ulpStatus) {
5457 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
5458 "RCV Unsol ELS: status:x%x/x%x did:x%x",
5459 icmd->ulpStatus, icmd->un.ulpWord[4], did);
5463 /* Check to see if link went down during discovery */
5464 if (lpfc_els_chk_latt(vport))
5467 /* Ignore traffic received during vport shutdown. */
5468 if (vport->load_flag & FC_UNLOADING)
5471 ndlp = lpfc_findnode_did(vport, did);
5473 /* Cannot find existing Fabric ndlp, so allocate a new one */
5474 ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL);
5478 lpfc_nlp_init(vport, ndlp, did);
5479 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
5481 if ((did & Fabric_DID_MASK) == Fabric_DID_MASK)
5482 ndlp->nlp_type |= NLP_FABRIC;
5483 } else if (!NLP_CHK_NODE_ACT(ndlp)) {
5484 ndlp = lpfc_enable_node(vport, ndlp,
5485 NLP_STE_UNUSED_NODE);
5488 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
5490 if ((did & Fabric_DID_MASK) == Fabric_DID_MASK)
5491 ndlp->nlp_type |= NLP_FABRIC;
5492 } else if (ndlp->nlp_state == NLP_STE_UNUSED_NODE) {
5493 /* This is similar to the new node path */
5494 ndlp = lpfc_nlp_get(ndlp);
5497 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
5501 phba->fc_stat.elsRcvFrame++;
5503 elsiocb->context1 = lpfc_nlp_get(ndlp);
5504 elsiocb->vport = vport;
5506 if ((cmd & ELS_CMD_MASK) == ELS_CMD_RSCN) {
5507 cmd &= ELS_CMD_MASK;
5509 /* ELS command <elsCmd> received from NPORT <did> */
5510 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
5511 "0112 ELS command x%x received from NPORT x%x "
5512 "Data: x%x\n", cmd, did, vport->port_state);
5515 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
5516 "RCV PLOGI: did:x%x/ste:x%x flg:x%x",
5517 did, vport->port_state, ndlp->nlp_flag);
5519 phba->fc_stat.elsRcvPLOGI++;
5520 ndlp = lpfc_plogi_confirm_nport(phba, payload, ndlp);
5522 lpfc_send_els_event(vport, ndlp, payload);
5523 if (vport->port_state < LPFC_DISC_AUTH) {
5524 if (!(phba->pport->fc_flag & FC_PT2PT) ||
5525 (phba->pport->fc_flag & FC_PT2PT_PLOGI)) {
5526 rjt_err = LSRJT_UNABLE_TPC;
5529 /* We get here, and drop thru, if we are PT2PT with
5530 * another NPort and the other side has initiated
5531 * the PLOGI before responding to our FLOGI.
5535 shost = lpfc_shost_from_vport(vport);
5536 spin_lock_irq(shost->host_lock);
5537 ndlp->nlp_flag &= ~NLP_TARGET_REMOVE;
5538 spin_unlock_irq(shost->host_lock);
5540 lpfc_disc_state_machine(vport, ndlp, elsiocb,
5545 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
5546 "RCV FLOGI: did:x%x/ste:x%x flg:x%x",
5547 did, vport->port_state, ndlp->nlp_flag);
5549 phba->fc_stat.elsRcvFLOGI++;
5550 lpfc_els_rcv_flogi(vport, elsiocb, ndlp);
5555 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
5556 "RCV LOGO: did:x%x/ste:x%x flg:x%x",
5557 did, vport->port_state, ndlp->nlp_flag);
5559 phba->fc_stat.elsRcvLOGO++;
5560 lpfc_send_els_event(vport, ndlp, payload);
5561 if (vport->port_state < LPFC_DISC_AUTH) {
5562 rjt_err = LSRJT_UNABLE_TPC;
5565 lpfc_disc_state_machine(vport, ndlp, elsiocb, NLP_EVT_RCV_LOGO);
5568 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
5569 "RCV PRLO: did:x%x/ste:x%x flg:x%x",
5570 did, vport->port_state, ndlp->nlp_flag);
5572 phba->fc_stat.elsRcvPRLO++;
5573 lpfc_send_els_event(vport, ndlp, payload);
5574 if (vport->port_state < LPFC_DISC_AUTH) {
5575 rjt_err = LSRJT_UNABLE_TPC;
5578 lpfc_disc_state_machine(vport, ndlp, elsiocb, NLP_EVT_RCV_PRLO);
5581 phba->fc_stat.elsRcvRSCN++;
5582 lpfc_els_rcv_rscn(vport, elsiocb, ndlp);
5587 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
5588 "RCV ADISC: did:x%x/ste:x%x flg:x%x",
5589 did, vport->port_state, ndlp->nlp_flag);
5591 lpfc_send_els_event(vport, ndlp, payload);
5592 phba->fc_stat.elsRcvADISC++;
5593 if (vport->port_state < LPFC_DISC_AUTH) {
5594 rjt_err = LSRJT_UNABLE_TPC;
5597 lpfc_disc_state_machine(vport, ndlp, elsiocb,
5601 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
5602 "RCV PDISC: did:x%x/ste:x%x flg:x%x",
5603 did, vport->port_state, ndlp->nlp_flag);
5605 phba->fc_stat.elsRcvPDISC++;
5606 if (vport->port_state < LPFC_DISC_AUTH) {
5607 rjt_err = LSRJT_UNABLE_TPC;
5610 lpfc_disc_state_machine(vport, ndlp, elsiocb,
5614 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
5615 "RCV FARPR: did:x%x/ste:x%x flg:x%x",
5616 did, vport->port_state, ndlp->nlp_flag);
5618 phba->fc_stat.elsRcvFARPR++;
5619 lpfc_els_rcv_farpr(vport, elsiocb, ndlp);
5622 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
5623 "RCV FARP: did:x%x/ste:x%x flg:x%x",
5624 did, vport->port_state, ndlp->nlp_flag);
5626 phba->fc_stat.elsRcvFARP++;
5627 lpfc_els_rcv_farp(vport, elsiocb, ndlp);
5630 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
5631 "RCV FAN: did:x%x/ste:x%x flg:x%x",
5632 did, vport->port_state, ndlp->nlp_flag);
5634 phba->fc_stat.elsRcvFAN++;
5635 lpfc_els_rcv_fan(vport, elsiocb, ndlp);
5638 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
5639 "RCV PRLI: did:x%x/ste:x%x flg:x%x",
5640 did, vport->port_state, ndlp->nlp_flag);
5642 phba->fc_stat.elsRcvPRLI++;
5643 if (vport->port_state < LPFC_DISC_AUTH) {
5644 rjt_err = LSRJT_UNABLE_TPC;
5647 lpfc_disc_state_machine(vport, ndlp, elsiocb, NLP_EVT_RCV_PRLI);
5650 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
5651 "RCV LIRR: did:x%x/ste:x%x flg:x%x",
5652 did, vport->port_state, ndlp->nlp_flag);
5654 phba->fc_stat.elsRcvLIRR++;
5655 lpfc_els_rcv_lirr(vport, elsiocb, ndlp);
5660 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
5661 "RCV RPS: did:x%x/ste:x%x flg:x%x",
5662 did, vport->port_state, ndlp->nlp_flag);
5664 phba->fc_stat.elsRcvRPS++;
5665 lpfc_els_rcv_rps(vport, elsiocb, ndlp);
5670 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
5671 "RCV RPL: did:x%x/ste:x%x flg:x%x",
5672 did, vport->port_state, ndlp->nlp_flag);
5674 phba->fc_stat.elsRcvRPL++;
5675 lpfc_els_rcv_rpl(vport, elsiocb, ndlp);
5680 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
5681 "RCV RNID: did:x%x/ste:x%x flg:x%x",
5682 did, vport->port_state, ndlp->nlp_flag);
5684 phba->fc_stat.elsRcvRNID++;
5685 lpfc_els_rcv_rnid(vport, elsiocb, ndlp);
5690 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
5691 "RCV RRQ: did:x%x/ste:x%x flg:x%x",
5692 did, vport->port_state, ndlp->nlp_flag);
5694 phba->fc_stat.elsRcvRRQ++;
5695 lpfc_els_rcv_rrq(vport, elsiocb, ndlp);
5700 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
5701 "RCV ELS cmd: cmd:x%x did:x%x/ste:x%x",
5702 cmd, did, vport->port_state);
5704 /* Unsupported ELS command, reject */
5705 rjt_err = LSRJT_INVALID_CMD;
5707 /* Unknown ELS command <elsCmd> received from NPORT <did> */
5708 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
5709 "0115 Unknown ELS command x%x "
5710 "received from NPORT x%x\n", cmd, did);
5716 /* check if need to LS_RJT received ELS cmd */
5718 memset(&stat, 0, sizeof(stat));
5719 stat.un.b.lsRjtRsnCode = rjt_err;
5720 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
5721 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, elsiocb, ndlp,
5725 lpfc_nlp_put(elsiocb->context1);
5726 elsiocb->context1 = NULL;
5730 if (vport && !(vport->load_flag & FC_UNLOADING))
5731 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
5732 "0111 Dropping received ELS cmd "
5733 "Data: x%x x%x x%x\n",
5734 icmd->ulpStatus, icmd->un.ulpWord[4], icmd->ulpTimeout);
5735 phba->fc_stat.elsRcvDrop++;
5739 * lpfc_find_vport_by_vpid - Find a vport on a HBA through vport identifier
5740 * @phba: pointer to lpfc hba data structure.
5741 * @vpi: host virtual N_Port identifier.
5743 * This routine finds a vport on a HBA (referred by @phba) through a
5744 * @vpi. The function walks the HBA's vport list and returns the address
5745 * of the vport with the matching @vpi.
5748 * NULL - No vport with the matching @vpi found
5749 * Otherwise - Address to the vport with the matching @vpi.
5752 lpfc_find_vport_by_vpid(struct lpfc_hba *phba, uint16_t vpi)
5754 struct lpfc_vport *vport;
5755 unsigned long flags;
5757 spin_lock_irqsave(&phba->hbalock, flags);
5758 list_for_each_entry(vport, &phba->port_list, listentry) {
5759 if (vport->vpi == vpi) {
5760 spin_unlock_irqrestore(&phba->hbalock, flags);
5764 spin_unlock_irqrestore(&phba->hbalock, flags);
5769 * lpfc_els_unsol_event - Process an unsolicited event from an els sli ring
5770 * @phba: pointer to lpfc hba data structure.
5771 * @pring: pointer to a SLI ring.
5772 * @elsiocb: pointer to lpfc els iocb data structure.
5774 * This routine is used to process an unsolicited event received from a SLI
5775 * (Service Level Interface) ring. The actual processing of the data buffer
5776 * associated with the unsolicited event is done by invoking the routine
5777 * lpfc_els_unsol_buffer() after properly set up the iocb buffer from the
5778 * SLI ring on which the unsolicited event was received.
5781 lpfc_els_unsol_event(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
5782 struct lpfc_iocbq *elsiocb)
5784 struct lpfc_vport *vport = phba->pport;
5785 IOCB_t *icmd = &elsiocb->iocb;
5787 struct lpfc_dmabuf *bdeBuf1 = elsiocb->context2;
5788 struct lpfc_dmabuf *bdeBuf2 = elsiocb->context3;
5790 elsiocb->context1 = NULL;
5791 elsiocb->context2 = NULL;
5792 elsiocb->context3 = NULL;
5794 if (icmd->ulpStatus == IOSTAT_NEED_BUFFER) {
5795 lpfc_sli_hbqbuf_add_hbqs(phba, LPFC_ELS_HBQ);
5796 } else if (icmd->ulpStatus == IOSTAT_LOCAL_REJECT &&
5797 (icmd->un.ulpWord[4] & 0xff) == IOERR_RCV_BUFFER_WAITING) {
5798 phba->fc_stat.NoRcvBuf++;
5799 /* Not enough posted buffers; Try posting more buffers */
5800 if (!(phba->sli3_options & LPFC_SLI3_HBQ_ENABLED))
5801 lpfc_post_buffer(phba, pring, 0);
5805 if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
5806 (icmd->ulpCommand == CMD_IOCB_RCV_ELS64_CX ||
5807 icmd->ulpCommand == CMD_IOCB_RCV_SEQ64_CX)) {
5808 if (icmd->unsli3.rcvsli3.vpi == 0xffff)
5809 vport = phba->pport;
5811 vport = lpfc_find_vport_by_vpid(phba,
5812 icmd->unsli3.rcvsli3.vpi - phba->vpi_base);
5814 /* If there are no BDEs associated
5815 * with this IOCB, there is nothing to do.
5817 if (icmd->ulpBdeCount == 0)
5820 /* type of ELS cmd is first 32bit word
5823 if (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) {
5824 elsiocb->context2 = bdeBuf1;
5826 paddr = getPaddr(icmd->un.cont64[0].addrHigh,
5827 icmd->un.cont64[0].addrLow);
5828 elsiocb->context2 = lpfc_sli_ringpostbuf_get(phba, pring,
5832 lpfc_els_unsol_buffer(phba, pring, vport, elsiocb);
5834 * The different unsolicited event handlers would tell us
5835 * if they are done with "mp" by setting context2 to NULL.
5837 if (elsiocb->context2) {
5838 lpfc_in_buf_free(phba, (struct lpfc_dmabuf *)elsiocb->context2);
5839 elsiocb->context2 = NULL;
5842 /* RCV_ELS64_CX provide for 2 BDEs - process 2nd if included */
5843 if ((phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) &&
5844 icmd->ulpBdeCount == 2) {
5845 elsiocb->context2 = bdeBuf2;
5846 lpfc_els_unsol_buffer(phba, pring, vport, elsiocb);
5847 /* free mp if we are done with it */
5848 if (elsiocb->context2) {
5849 lpfc_in_buf_free(phba, elsiocb->context2);
5850 elsiocb->context2 = NULL;
5856 * lpfc_do_scr_ns_plogi - Issue a plogi to the name server for scr
5857 * @phba: pointer to lpfc hba data structure.
5858 * @vport: pointer to a virtual N_Port data structure.
5860 * This routine issues a Port Login (PLOGI) to the Name Server with
5861 * State Change Request (SCR) for a @vport. This routine will create an
5862 * ndlp for the Name Server associated to the @vport if such node does
5863 * not already exist. The PLOGI to Name Server is issued by invoking the
5864 * lpfc_issue_els_plogi() routine. If Fabric-Device Management Interface
5865 * (FDMI) is configured to the @vport, a FDMI node will be created and
5866 * the PLOGI to FDMI is issued by invoking lpfc_issue_els_plogi() routine.
5869 lpfc_do_scr_ns_plogi(struct lpfc_hba *phba, struct lpfc_vport *vport)
5871 struct lpfc_nodelist *ndlp, *ndlp_fdmi;
5873 ndlp = lpfc_findnode_did(vport, NameServer_DID);
5875 ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL);
5877 if (phba->fc_topology == TOPOLOGY_LOOP) {
5878 lpfc_disc_start(vport);
5881 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
5882 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
5883 "0251 NameServer login: no memory\n");
5886 lpfc_nlp_init(vport, ndlp, NameServer_DID);
5887 } else if (!NLP_CHK_NODE_ACT(ndlp)) {
5888 ndlp = lpfc_enable_node(vport, ndlp, NLP_STE_UNUSED_NODE);
5890 if (phba->fc_topology == TOPOLOGY_LOOP) {
5891 lpfc_disc_start(vport);
5894 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
5895 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
5896 "0348 NameServer login: node freed\n");
5900 ndlp->nlp_type |= NLP_FABRIC;
5902 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
5904 if (lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0)) {
5905 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
5906 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
5907 "0252 Cannot issue NameServer login\n");
5911 if (vport->cfg_fdmi_on) {
5912 ndlp_fdmi = mempool_alloc(phba->nlp_mem_pool,
5915 lpfc_nlp_init(vport, ndlp_fdmi, FDMI_DID);
5916 ndlp_fdmi->nlp_type |= NLP_FABRIC;
5917 lpfc_nlp_set_state(vport, ndlp_fdmi,
5918 NLP_STE_PLOGI_ISSUE);
5919 lpfc_issue_els_plogi(vport, ndlp_fdmi->nlp_DID,
5927 * lpfc_cmpl_reg_new_vport - Completion callback function to register new vport
5928 * @phba: pointer to lpfc hba data structure.
5929 * @pmb: pointer to the driver internal queue element for mailbox command.
5931 * This routine is the completion callback function to register new vport
5932 * mailbox command. If the new vport mailbox command completes successfully,
5933 * the fabric registration login shall be performed on physical port (the
5934 * new vport created is actually a physical port, with VPI 0) or the port
5935 * login to Name Server for State Change Request (SCR) will be performed
5936 * on virtual port (real virtual port, with VPI greater than 0).
5939 lpfc_cmpl_reg_new_vport(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
5941 struct lpfc_vport *vport = pmb->vport;
5942 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
5943 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2;
5944 MAILBOX_t *mb = &pmb->u.mb;
5947 spin_lock_irq(shost->host_lock);
5948 vport->fc_flag &= ~FC_VPORT_NEEDS_REG_VPI;
5949 spin_unlock_irq(shost->host_lock);
5951 if (mb->mbxStatus) {
5952 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
5953 "0915 Register VPI failed: 0x%x\n",
5956 switch (mb->mbxStatus) {
5957 case 0x11: /* unsupported feature */
5958 case 0x9603: /* max_vpi exceeded */
5959 case 0x9602: /* Link event since CLEAR_LA */
5960 /* giving up on vport registration */
5961 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
5962 spin_lock_irq(shost->host_lock);
5963 vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
5964 spin_unlock_irq(shost->host_lock);
5965 lpfc_can_disctmo(vport);
5967 /* If reg_vpi fail with invalid VPI status, re-init VPI */
5969 spin_lock_irq(shost->host_lock);
5970 vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
5971 spin_unlock_irq(shost->host_lock);
5972 lpfc_init_vpi(phba, pmb, vport->vpi);
5974 pmb->mbox_cmpl = lpfc_init_vpi_cmpl;
5975 rc = lpfc_sli_issue_mbox(phba, pmb,
5977 if (rc == MBX_NOT_FINISHED) {
5978 lpfc_printf_vlog(vport,
5980 "2732 Failed to issue INIT_VPI"
5981 " mailbox command\n");
5988 /* Try to recover from this error */
5989 lpfc_mbx_unreg_vpi(vport);
5990 spin_lock_irq(shost->host_lock);
5991 vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
5992 spin_unlock_irq(shost->host_lock);
5993 if (vport->port_type == LPFC_PHYSICAL_PORT)
5994 lpfc_initial_flogi(vport);
5996 lpfc_initial_fdisc(vport);
6000 spin_lock_irq(shost->host_lock);
6001 vport->vpi_state |= LPFC_VPI_REGISTERED;
6002 spin_unlock_irq(shost->host_lock);
6003 if (vport == phba->pport) {
6004 if (phba->sli_rev < LPFC_SLI_REV4)
6005 lpfc_issue_fabric_reglogin(vport);
6007 lpfc_start_fdiscs(phba);
6008 lpfc_do_scr_ns_plogi(phba, vport);
6011 lpfc_do_scr_ns_plogi(phba, vport);
6014 /* Now, we decrement the ndlp reference count held for this
6019 mempool_free(pmb, phba->mbox_mem_pool);
6024 * lpfc_register_new_vport - Register a new vport with a HBA
6025 * @phba: pointer to lpfc hba data structure.
6026 * @vport: pointer to a host virtual N_Port data structure.
6027 * @ndlp: pointer to a node-list data structure.
6029 * This routine registers the @vport as a new virtual port with a HBA.
6030 * It is done through a registering vpi mailbox command.
6033 lpfc_register_new_vport(struct lpfc_hba *phba, struct lpfc_vport *vport,
6034 struct lpfc_nodelist *ndlp)
6036 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
6039 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
6041 lpfc_reg_vpi(vport, mbox);
6042 mbox->vport = vport;
6043 mbox->context2 = lpfc_nlp_get(ndlp);
6044 mbox->mbox_cmpl = lpfc_cmpl_reg_new_vport;
6045 if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT)
6046 == MBX_NOT_FINISHED) {
6047 /* mailbox command not success, decrement ndlp
6048 * reference count for this command
6051 mempool_free(mbox, phba->mbox_mem_pool);
6053 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
6054 "0253 Register VPI: Can't send mbox\n");
6058 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
6059 "0254 Register VPI: no memory\n");
6065 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
6066 spin_lock_irq(shost->host_lock);
6067 vport->fc_flag &= ~FC_VPORT_NEEDS_REG_VPI;
6068 spin_unlock_irq(shost->host_lock);
6073 * lpfc_retry_pport_discovery - Start timer to retry FLOGI.
6074 * @phba: pointer to lpfc hba data structure.
6076 * This routine abort all pending discovery commands and
6077 * start a timer to retry FLOGI for the physical port
6081 lpfc_retry_pport_discovery(struct lpfc_hba *phba)
6083 struct lpfc_vport **vports;
6084 struct lpfc_nodelist *ndlp;
6085 struct Scsi_Host *shost;
6087 uint32_t link_state;
6089 /* Treat this failure as linkdown for all vports */
6090 link_state = phba->link_state;
6091 lpfc_linkdown(phba);
6092 phba->link_state = link_state;
6094 vports = lpfc_create_vport_work_array(phba);
6097 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
6098 ndlp = lpfc_findnode_did(vports[i], Fabric_DID);
6100 lpfc_cancel_retry_delay_tmo(vports[i], ndlp);
6101 lpfc_els_flush_cmd(vports[i]);
6103 lpfc_destroy_vport_work_array(phba, vports);
6106 /* If fabric require FLOGI, then re-instantiate physical login */
6107 ndlp = lpfc_findnode_did(phba->pport, Fabric_DID);
6112 shost = lpfc_shost_from_vport(phba->pport);
6113 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ);
6114 spin_lock_irq(shost->host_lock);
6115 ndlp->nlp_flag |= NLP_DELAY_TMO;
6116 spin_unlock_irq(shost->host_lock);
6117 ndlp->nlp_last_elscmd = ELS_CMD_FLOGI;
6118 phba->pport->port_state = LPFC_FLOGI;
6123 * lpfc_fabric_login_reqd - Check if FLOGI required.
6124 * @phba: pointer to lpfc hba data structure.
6125 * @cmdiocb: pointer to FDISC command iocb.
6126 * @rspiocb: pointer to FDISC response iocb.
6128 * This routine checks if a FLOGI is reguired for FDISC
6132 lpfc_fabric_login_reqd(struct lpfc_hba *phba,
6133 struct lpfc_iocbq *cmdiocb,
6134 struct lpfc_iocbq *rspiocb)
6137 if ((rspiocb->iocb.ulpStatus != IOSTAT_FABRIC_RJT) ||
6138 (rspiocb->iocb.un.ulpWord[4] != RJT_LOGIN_REQUIRED))
6145 * lpfc_cmpl_els_fdisc - Completion function for fdisc iocb command
6146 * @phba: pointer to lpfc hba data structure.
6147 * @cmdiocb: pointer to lpfc command iocb data structure.
6148 * @rspiocb: pointer to lpfc response iocb data structure.
6150 * This routine is the completion callback function to a Fabric Discover
6151 * (FDISC) ELS command. Since all the FDISC ELS commands are issued
6152 * single threaded, each FDISC completion callback function will reset
6153 * the discovery timer for all vports such that the timers will not get
6154 * unnecessary timeout. The function checks the FDISC IOCB status. If error
6155 * detected, the vport will be set to FC_VPORT_FAILED state. Otherwise,the
6156 * vport will set to FC_VPORT_ACTIVE state. It then checks whether the DID
6157 * assigned to the vport has been changed with the completion of the FDISC
6158 * command. If so, both RPI (Remote Port Index) and VPI (Virtual Port Index)
6159 * are unregistered from the HBA, and then the lpfc_register_new_vport()
6160 * routine is invoked to register new vport with the HBA. Otherwise, the
6161 * lpfc_do_scr_ns_plogi() routine is invoked to issue a PLOGI to the Name
6162 * Server for State Change Request (SCR).
6165 lpfc_cmpl_els_fdisc(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
6166 struct lpfc_iocbq *rspiocb)
6168 struct lpfc_vport *vport = cmdiocb->vport;
6169 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
6170 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) cmdiocb->context1;
6171 struct lpfc_nodelist *np;
6172 struct lpfc_nodelist *next_np;
6173 IOCB_t *irsp = &rspiocb->iocb;
6174 struct lpfc_iocbq *piocb;
6176 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
6177 "0123 FDISC completes. x%x/x%x prevDID: x%x\n",
6178 irsp->ulpStatus, irsp->un.ulpWord[4],
6180 /* Since all FDISCs are being single threaded, we
6181 * must reset the discovery timer for ALL vports
6182 * waiting to send FDISC when one completes.
6184 list_for_each_entry(piocb, &phba->fabric_iocb_list, list) {
6185 lpfc_set_disctmo(piocb->vport);
6188 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
6189 "FDISC cmpl: status:x%x/x%x prevdid:x%x",
6190 irsp->ulpStatus, irsp->un.ulpWord[4], vport->fc_prevDID);
6192 if (irsp->ulpStatus) {
6194 if (lpfc_fabric_login_reqd(phba, cmdiocb, rspiocb)) {
6195 lpfc_retry_pport_discovery(phba);
6199 /* Check for retry */
6200 if (lpfc_els_retry(phba, cmdiocb, rspiocb))
6203 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
6204 "0126 FDISC failed. (%d/%d)\n",
6205 irsp->ulpStatus, irsp->un.ulpWord[4]);
6208 spin_lock_irq(shost->host_lock);
6209 vport->fc_flag &= ~FC_VPORT_CVL_RCVD;
6210 vport->fc_flag |= FC_FABRIC;
6211 if (vport->phba->fc_topology == TOPOLOGY_LOOP)
6212 vport->fc_flag |= FC_PUBLIC_LOOP;
6213 spin_unlock_irq(shost->host_lock);
6215 vport->fc_myDID = irsp->un.ulpWord[4] & Mask_DID;
6216 lpfc_vport_set_state(vport, FC_VPORT_ACTIVE);
6217 if ((vport->fc_prevDID != vport->fc_myDID) &&
6218 !(vport->fc_flag & FC_VPORT_NEEDS_REG_VPI)) {
6219 /* If our NportID changed, we need to ensure all
6220 * remaining NPORTs get unreg_login'ed so we can
6223 list_for_each_entry_safe(np, next_np,
6224 &vport->fc_nodes, nlp_listp) {
6225 if (!NLP_CHK_NODE_ACT(ndlp) ||
6226 (np->nlp_state != NLP_STE_NPR_NODE) ||
6227 !(np->nlp_flag & NLP_NPR_ADISC))
6229 spin_lock_irq(shost->host_lock);
6230 np->nlp_flag &= ~NLP_NPR_ADISC;
6231 spin_unlock_irq(shost->host_lock);
6232 lpfc_unreg_rpi(vport, np);
6234 lpfc_mbx_unreg_vpi(vport);
6235 spin_lock_irq(shost->host_lock);
6236 vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
6237 if (phba->sli_rev == LPFC_SLI_REV4)
6238 vport->fc_flag |= FC_VPORT_NEEDS_INIT_VPI;
6239 spin_unlock_irq(shost->host_lock);
6242 if (vport->fc_flag & FC_VPORT_NEEDS_INIT_VPI)
6243 lpfc_issue_init_vpi(vport);
6244 else if (vport->fc_flag & FC_VPORT_NEEDS_REG_VPI)
6245 lpfc_register_new_vport(phba, vport, ndlp);
6247 lpfc_do_scr_ns_plogi(phba, vport);
6250 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
6251 /* Cancel discovery timer */
6252 lpfc_can_disctmo(vport);
6255 lpfc_els_free_iocb(phba, cmdiocb);
6259 * lpfc_issue_els_fdisc - Issue a fdisc iocb command
6260 * @vport: pointer to a virtual N_Port data structure.
6261 * @ndlp: pointer to a node-list data structure.
6262 * @retry: number of retries to the command IOCB.
6264 * This routine prepares and issues a Fabric Discover (FDISC) IOCB to
6265 * a remote node (@ndlp) off a @vport. It uses the lpfc_issue_fabric_iocb()
6266 * routine to issue the IOCB, which makes sure only one outstanding fabric
6267 * IOCB will be sent off HBA at any given time.
6269 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
6270 * will be incremented by 1 for holding the ndlp and the reference to ndlp
6271 * will be stored into the context1 field of the IOCB for the completion
6272 * callback function to the FDISC ELS command.
6275 * 0 - Successfully issued fdisc iocb command
6276 * 1 - Failed to issue fdisc iocb command
6279 lpfc_issue_els_fdisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
6282 struct lpfc_hba *phba = vport->phba;
6284 struct lpfc_iocbq *elsiocb;
6285 struct serv_parm *sp;
6288 int did = ndlp->nlp_DID;
6291 vport->port_state = LPFC_FDISC;
6292 cmdsize = (sizeof(uint32_t) + sizeof(struct serv_parm));
6293 elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp, did,
6296 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
6297 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
6298 "0255 Issue FDISC: no IOCB\n");
6302 icmd = &elsiocb->iocb;
6303 icmd->un.elsreq64.myID = 0;
6304 icmd->un.elsreq64.fl = 1;
6306 if (phba->sli_rev == LPFC_SLI_REV4) {
6307 /* FDISC needs to be 1 for WQE VPI */
6308 elsiocb->iocb.ulpCt_h = (SLI4_CT_VPI >> 1) & 1;
6309 elsiocb->iocb.ulpCt_l = SLI4_CT_VPI & 1 ;
6310 /* Set the ulpContext to the vpi */
6311 elsiocb->iocb.ulpContext = vport->vpi + phba->vpi_base;
6313 /* For FDISC, Let FDISC rsp set the NPortID for this VPI */
6318 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
6319 *((uint32_t *) (pcmd)) = ELS_CMD_FDISC;
6320 pcmd += sizeof(uint32_t); /* CSP Word 1 */
6321 memcpy(pcmd, &vport->phba->pport->fc_sparam, sizeof(struct serv_parm));
6322 sp = (struct serv_parm *) pcmd;
6323 /* Setup CSPs accordingly for Fabric */
6324 sp->cmn.e_d_tov = 0;
6325 sp->cmn.w2.r_a_tov = 0;
6326 sp->cls1.classValid = 0;
6327 sp->cls2.seqDelivery = 1;
6328 sp->cls3.seqDelivery = 1;
6330 pcmd += sizeof(uint32_t); /* CSP Word 2 */
6331 pcmd += sizeof(uint32_t); /* CSP Word 3 */
6332 pcmd += sizeof(uint32_t); /* CSP Word 4 */
6333 pcmd += sizeof(uint32_t); /* Port Name */
6334 memcpy(pcmd, &vport->fc_portname, 8);
6335 pcmd += sizeof(uint32_t); /* Node Name */
6336 pcmd += sizeof(uint32_t); /* Node Name */
6337 memcpy(pcmd, &vport->fc_nodename, 8);
6339 lpfc_set_disctmo(vport);
6341 phba->fc_stat.elsXmitFDISC++;
6342 elsiocb->iocb_cmpl = lpfc_cmpl_els_fdisc;
6344 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
6345 "Issue FDISC: did:x%x",
6348 rc = lpfc_issue_fabric_iocb(phba, elsiocb);
6349 if (rc == IOCB_ERROR) {
6350 lpfc_els_free_iocb(phba, elsiocb);
6351 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
6352 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
6353 "0256 Issue FDISC: Cannot send IOCB\n");
6356 lpfc_vport_set_state(vport, FC_VPORT_INITIALIZING);
6361 * lpfc_cmpl_els_npiv_logo - Completion function with vport logo
6362 * @phba: pointer to lpfc hba data structure.
6363 * @cmdiocb: pointer to lpfc command iocb data structure.
6364 * @rspiocb: pointer to lpfc response iocb data structure.
6366 * This routine is the completion callback function to the issuing of a LOGO
6367 * ELS command off a vport. It frees the command IOCB and then decrement the
6368 * reference count held on ndlp for this completion function, indicating that
6369 * the reference to the ndlp is no long needed. Note that the
6370 * lpfc_els_free_iocb() routine decrements the ndlp reference held for this
6371 * callback function and an additional explicit ndlp reference decrementation
6372 * will trigger the actual release of the ndlp.
6375 lpfc_cmpl_els_npiv_logo(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
6376 struct lpfc_iocbq *rspiocb)
6378 struct lpfc_vport *vport = cmdiocb->vport;
6380 struct lpfc_nodelist *ndlp;
6381 ndlp = (struct lpfc_nodelist *)cmdiocb->context1;
6383 irsp = &rspiocb->iocb;
6384 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
6385 "LOGO npiv cmpl: status:x%x/x%x did:x%x",
6386 irsp->ulpStatus, irsp->un.ulpWord[4], irsp->un.rcvels.remoteID);
6388 lpfc_els_free_iocb(phba, cmdiocb);
6389 vport->unreg_vpi_cmpl = VPORT_ERROR;
6391 /* Trigger the release of the ndlp after logo */
6396 * lpfc_issue_els_npiv_logo - Issue a logo off a vport
6397 * @vport: pointer to a virtual N_Port data structure.
6398 * @ndlp: pointer to a node-list data structure.
6400 * This routine issues a LOGO ELS command to an @ndlp off a @vport.
6402 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
6403 * will be incremented by 1 for holding the ndlp and the reference to ndlp
6404 * will be stored into the context1 field of the IOCB for the completion
6405 * callback function to the LOGO ELS command.
6408 * 0 - Successfully issued logo off the @vport
6409 * 1 - Failed to issue logo off the @vport
6412 lpfc_issue_els_npiv_logo(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
6414 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
6415 struct lpfc_hba *phba = vport->phba;
6417 struct lpfc_iocbq *elsiocb;
6421 cmdsize = 2 * sizeof(uint32_t) + sizeof(struct lpfc_name);
6422 elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, 0, ndlp, ndlp->nlp_DID,
6427 icmd = &elsiocb->iocb;
6428 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
6429 *((uint32_t *) (pcmd)) = ELS_CMD_LOGO;
6430 pcmd += sizeof(uint32_t);
6432 /* Fill in LOGO payload */
6433 *((uint32_t *) (pcmd)) = be32_to_cpu(vport->fc_myDID);
6434 pcmd += sizeof(uint32_t);
6435 memcpy(pcmd, &vport->fc_portname, sizeof(struct lpfc_name));
6437 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
6438 "Issue LOGO npiv did:x%x flg:x%x",
6439 ndlp->nlp_DID, ndlp->nlp_flag, 0);
6441 elsiocb->iocb_cmpl = lpfc_cmpl_els_npiv_logo;
6442 spin_lock_irq(shost->host_lock);
6443 ndlp->nlp_flag |= NLP_LOGO_SND;
6444 spin_unlock_irq(shost->host_lock);
6445 if (lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0) ==
6447 spin_lock_irq(shost->host_lock);
6448 ndlp->nlp_flag &= ~NLP_LOGO_SND;
6449 spin_unlock_irq(shost->host_lock);
6450 lpfc_els_free_iocb(phba, elsiocb);
6457 * lpfc_fabric_block_timeout - Handler function to the fabric block timer
6458 * @ptr: holder for the timer function associated data.
6460 * This routine is invoked by the fabric iocb block timer after
6461 * timeout. It posts the fabric iocb block timeout event by setting the
6462 * WORKER_FABRIC_BLOCK_TMO bit to work port event bitmap and then invokes
6463 * lpfc_worker_wake_up() routine to wake up the worker thread. It is for
6464 * the worker thread to invoke the lpfc_unblock_fabric_iocbs() on the
6465 * posted event WORKER_FABRIC_BLOCK_TMO.
6468 lpfc_fabric_block_timeout(unsigned long ptr)
6470 struct lpfc_hba *phba = (struct lpfc_hba *) ptr;
6471 unsigned long iflags;
6472 uint32_t tmo_posted;
6474 spin_lock_irqsave(&phba->pport->work_port_lock, iflags);
6475 tmo_posted = phba->pport->work_port_events & WORKER_FABRIC_BLOCK_TMO;
6477 phba->pport->work_port_events |= WORKER_FABRIC_BLOCK_TMO;
6478 spin_unlock_irqrestore(&phba->pport->work_port_lock, iflags);
6481 lpfc_worker_wake_up(phba);
6486 * lpfc_resume_fabric_iocbs - Issue a fabric iocb from driver internal list
6487 * @phba: pointer to lpfc hba data structure.
6489 * This routine issues one fabric iocb from the driver internal list to
6490 * the HBA. It first checks whether it's ready to issue one fabric iocb to
6491 * the HBA (whether there is no outstanding fabric iocb). If so, it shall
6492 * remove one pending fabric iocb from the driver internal list and invokes
6493 * lpfc_sli_issue_iocb() routine to send the fabric iocb to the HBA.
6496 lpfc_resume_fabric_iocbs(struct lpfc_hba *phba)
6498 struct lpfc_iocbq *iocb;
6499 unsigned long iflags;
6505 spin_lock_irqsave(&phba->hbalock, iflags);
6506 /* Post any pending iocb to the SLI layer */
6507 if (atomic_read(&phba->fabric_iocb_count) == 0) {
6508 list_remove_head(&phba->fabric_iocb_list, iocb, typeof(*iocb),
6511 /* Increment fabric iocb count to hold the position */
6512 atomic_inc(&phba->fabric_iocb_count);
6514 spin_unlock_irqrestore(&phba->hbalock, iflags);
6516 iocb->fabric_iocb_cmpl = iocb->iocb_cmpl;
6517 iocb->iocb_cmpl = lpfc_cmpl_fabric_iocb;
6518 iocb->iocb_flag |= LPFC_IO_FABRIC;
6520 lpfc_debugfs_disc_trc(iocb->vport, LPFC_DISC_TRC_ELS_CMD,
6521 "Fabric sched1: ste:x%x",
6522 iocb->vport->port_state, 0, 0);
6524 ret = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, iocb, 0);
6526 if (ret == IOCB_ERROR) {
6527 iocb->iocb_cmpl = iocb->fabric_iocb_cmpl;
6528 iocb->fabric_iocb_cmpl = NULL;
6529 iocb->iocb_flag &= ~LPFC_IO_FABRIC;
6531 cmd->ulpStatus = IOSTAT_LOCAL_REJECT;
6532 cmd->un.ulpWord[4] = IOERR_SLI_ABORTED;
6533 iocb->iocb_cmpl(phba, iocb, iocb);
6535 atomic_dec(&phba->fabric_iocb_count);
6544 * lpfc_unblock_fabric_iocbs - Unblock issuing fabric iocb command
6545 * @phba: pointer to lpfc hba data structure.
6547 * This routine unblocks the issuing fabric iocb command. The function
6548 * will clear the fabric iocb block bit and then invoke the routine
6549 * lpfc_resume_fabric_iocbs() to issue one of the pending fabric iocb
6550 * from the driver internal fabric iocb list.
6553 lpfc_unblock_fabric_iocbs(struct lpfc_hba *phba)
6555 clear_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags);
6557 lpfc_resume_fabric_iocbs(phba);
6562 * lpfc_block_fabric_iocbs - Block issuing fabric iocb command
6563 * @phba: pointer to lpfc hba data structure.
6565 * This routine blocks the issuing fabric iocb for a specified amount of
6566 * time (currently 100 ms). This is done by set the fabric iocb block bit
6567 * and set up a timeout timer for 100ms. When the block bit is set, no more
6568 * fabric iocb will be issued out of the HBA.
6571 lpfc_block_fabric_iocbs(struct lpfc_hba *phba)
6575 blocked = test_and_set_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags);
6576 /* Start a timer to unblock fabric iocbs after 100ms */
6578 mod_timer(&phba->fabric_block_timer, jiffies + HZ/10 );
6584 * lpfc_cmpl_fabric_iocb - Completion callback function for fabric iocb
6585 * @phba: pointer to lpfc hba data structure.
6586 * @cmdiocb: pointer to lpfc command iocb data structure.
6587 * @rspiocb: pointer to lpfc response iocb data structure.
6589 * This routine is the callback function that is put to the fabric iocb's
6590 * callback function pointer (iocb->iocb_cmpl). The original iocb's callback
6591 * function pointer has been stored in iocb->fabric_iocb_cmpl. This callback
6592 * function first restores and invokes the original iocb's callback function
6593 * and then invokes the lpfc_resume_fabric_iocbs() routine to issue the next
6594 * fabric bound iocb from the driver internal fabric iocb list onto the wire.
6597 lpfc_cmpl_fabric_iocb(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
6598 struct lpfc_iocbq *rspiocb)
6602 if ((cmdiocb->iocb_flag & LPFC_IO_FABRIC) != LPFC_IO_FABRIC)
6605 switch (rspiocb->iocb.ulpStatus) {
6606 case IOSTAT_NPORT_RJT:
6607 case IOSTAT_FABRIC_RJT:
6608 if (rspiocb->iocb.un.ulpWord[4] & RJT_UNAVAIL_TEMP) {
6609 lpfc_block_fabric_iocbs(phba);
6613 case IOSTAT_NPORT_BSY:
6614 case IOSTAT_FABRIC_BSY:
6615 lpfc_block_fabric_iocbs(phba);
6619 stat.un.lsRjtError =
6620 be32_to_cpu(rspiocb->iocb.un.ulpWord[4]);
6621 if ((stat.un.b.lsRjtRsnCode == LSRJT_UNABLE_TPC) ||
6622 (stat.un.b.lsRjtRsnCode == LSRJT_LOGICAL_BSY))
6623 lpfc_block_fabric_iocbs(phba);
6627 if (atomic_read(&phba->fabric_iocb_count) == 0)
6630 cmdiocb->iocb_cmpl = cmdiocb->fabric_iocb_cmpl;
6631 cmdiocb->fabric_iocb_cmpl = NULL;
6632 cmdiocb->iocb_flag &= ~LPFC_IO_FABRIC;
6633 cmdiocb->iocb_cmpl(phba, cmdiocb, rspiocb);
6635 atomic_dec(&phba->fabric_iocb_count);
6636 if (!test_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags)) {
6637 /* Post any pending iocbs to HBA */
6638 lpfc_resume_fabric_iocbs(phba);
6643 * lpfc_issue_fabric_iocb - Issue a fabric iocb command
6644 * @phba: pointer to lpfc hba data structure.
6645 * @iocb: pointer to lpfc command iocb data structure.
6647 * This routine is used as the top-level API for issuing a fabric iocb command
6648 * such as FLOGI and FDISC. To accommodate certain switch fabric, this driver
6649 * function makes sure that only one fabric bound iocb will be outstanding at
6650 * any given time. As such, this function will first check to see whether there
6651 * is already an outstanding fabric iocb on the wire. If so, it will put the
6652 * newly issued iocb onto the driver internal fabric iocb list, waiting to be
6653 * issued later. Otherwise, it will issue the iocb on the wire and update the
6654 * fabric iocb count it indicate that there is one fabric iocb on the wire.
6656 * Note, this implementation has a potential sending out fabric IOCBs out of
6657 * order. The problem is caused by the construction of the "ready" boolen does
6658 * not include the condition that the internal fabric IOCB list is empty. As
6659 * such, it is possible a fabric IOCB issued by this routine might be "jump"
6660 * ahead of the fabric IOCBs in the internal list.
6663 * IOCB_SUCCESS - either fabric iocb put on the list or issued successfully
6664 * IOCB_ERROR - failed to issue fabric iocb
6667 lpfc_issue_fabric_iocb(struct lpfc_hba *phba, struct lpfc_iocbq *iocb)
6669 unsigned long iflags;
6673 if (atomic_read(&phba->fabric_iocb_count) > 1)
6676 spin_lock_irqsave(&phba->hbalock, iflags);
6677 ready = atomic_read(&phba->fabric_iocb_count) == 0 &&
6678 !test_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags);
6681 /* Increment fabric iocb count to hold the position */
6682 atomic_inc(&phba->fabric_iocb_count);
6683 spin_unlock_irqrestore(&phba->hbalock, iflags);
6685 iocb->fabric_iocb_cmpl = iocb->iocb_cmpl;
6686 iocb->iocb_cmpl = lpfc_cmpl_fabric_iocb;
6687 iocb->iocb_flag |= LPFC_IO_FABRIC;
6689 lpfc_debugfs_disc_trc(iocb->vport, LPFC_DISC_TRC_ELS_CMD,
6690 "Fabric sched2: ste:x%x",
6691 iocb->vport->port_state, 0, 0);
6693 ret = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, iocb, 0);
6695 if (ret == IOCB_ERROR) {
6696 iocb->iocb_cmpl = iocb->fabric_iocb_cmpl;
6697 iocb->fabric_iocb_cmpl = NULL;
6698 iocb->iocb_flag &= ~LPFC_IO_FABRIC;
6699 atomic_dec(&phba->fabric_iocb_count);
6702 spin_lock_irqsave(&phba->hbalock, iflags);
6703 list_add_tail(&iocb->list, &phba->fabric_iocb_list);
6704 spin_unlock_irqrestore(&phba->hbalock, iflags);
6711 * lpfc_fabric_abort_vport - Abort a vport's iocbs from driver fabric iocb list
6712 * @vport: pointer to a virtual N_Port data structure.
6714 * This routine aborts all the IOCBs associated with a @vport from the
6715 * driver internal fabric IOCB list. The list contains fabric IOCBs to be
6716 * issued to the ELS IOCB ring. This abort function walks the fabric IOCB
6717 * list, removes each IOCB associated with the @vport off the list, set the
6718 * status feild to IOSTAT_LOCAL_REJECT, and invokes the callback function
6719 * associated with the IOCB.
6721 static void lpfc_fabric_abort_vport(struct lpfc_vport *vport)
6723 LIST_HEAD(completions);
6724 struct lpfc_hba *phba = vport->phba;
6725 struct lpfc_iocbq *tmp_iocb, *piocb;
6727 spin_lock_irq(&phba->hbalock);
6728 list_for_each_entry_safe(piocb, tmp_iocb, &phba->fabric_iocb_list,
6731 if (piocb->vport != vport)
6734 list_move_tail(&piocb->list, &completions);
6736 spin_unlock_irq(&phba->hbalock);
6738 /* Cancel all the IOCBs from the completions list */
6739 lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
6744 * lpfc_fabric_abort_nport - Abort a ndlp's iocbs from driver fabric iocb list
6745 * @ndlp: pointer to a node-list data structure.
6747 * This routine aborts all the IOCBs associated with an @ndlp from the
6748 * driver internal fabric IOCB list. The list contains fabric IOCBs to be
6749 * issued to the ELS IOCB ring. This abort function walks the fabric IOCB
6750 * list, removes each IOCB associated with the @ndlp off the list, set the
6751 * status feild to IOSTAT_LOCAL_REJECT, and invokes the callback function
6752 * associated with the IOCB.
6754 void lpfc_fabric_abort_nport(struct lpfc_nodelist *ndlp)
6756 LIST_HEAD(completions);
6757 struct lpfc_hba *phba = ndlp->phba;
6758 struct lpfc_iocbq *tmp_iocb, *piocb;
6759 struct lpfc_sli_ring *pring = &phba->sli.ring[LPFC_ELS_RING];
6761 spin_lock_irq(&phba->hbalock);
6762 list_for_each_entry_safe(piocb, tmp_iocb, &phba->fabric_iocb_list,
6764 if ((lpfc_check_sli_ndlp(phba, pring, piocb, ndlp))) {
6766 list_move_tail(&piocb->list, &completions);
6769 spin_unlock_irq(&phba->hbalock);
6771 /* Cancel all the IOCBs from the completions list */
6772 lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
6777 * lpfc_fabric_abort_hba - Abort all iocbs on driver fabric iocb list
6778 * @phba: pointer to lpfc hba data structure.
6780 * This routine aborts all the IOCBs currently on the driver internal
6781 * fabric IOCB list. The list contains fabric IOCBs to be issued to the ELS
6782 * IOCB ring. This function takes the entire IOCB list off the fabric IOCB
6783 * list, removes IOCBs off the list, set the status feild to
6784 * IOSTAT_LOCAL_REJECT, and invokes the callback function associated with
6787 void lpfc_fabric_abort_hba(struct lpfc_hba *phba)
6789 LIST_HEAD(completions);
6791 spin_lock_irq(&phba->hbalock);
6792 list_splice_init(&phba->fabric_iocb_list, &completions);
6793 spin_unlock_irq(&phba->hbalock);
6795 /* Cancel all the IOCBs from the completions list */
6796 lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
6801 * lpfc_sli4_els_xri_aborted - Slow-path process of els xri abort
6802 * @phba: pointer to lpfc hba data structure.
6803 * @axri: pointer to the els xri abort wcqe structure.
6805 * This routine is invoked by the worker thread to process a SLI4 slow-path
6809 lpfc_sli4_els_xri_aborted(struct lpfc_hba *phba,
6810 struct sli4_wcqe_xri_aborted *axri)
6812 uint16_t xri = bf_get(lpfc_wcqe_xa_xri, axri);
6813 struct lpfc_sglq *sglq_entry = NULL, *sglq_next = NULL;
6814 unsigned long iflag = 0;
6816 spin_lock_irqsave(&phba->hbalock, iflag);
6817 spin_lock(&phba->sli4_hba.abts_sgl_list_lock);
6818 list_for_each_entry_safe(sglq_entry, sglq_next,
6819 &phba->sli4_hba.lpfc_abts_els_sgl_list, list) {
6820 if (sglq_entry->sli4_xritag == xri) {
6821 list_del(&sglq_entry->list);
6822 list_add_tail(&sglq_entry->list,
6823 &phba->sli4_hba.lpfc_sgl_list);
6824 sglq_entry->state = SGL_FREED;
6825 spin_unlock(&phba->sli4_hba.abts_sgl_list_lock);
6826 spin_unlock_irqrestore(&phba->hbalock, iflag);
6830 spin_unlock(&phba->sli4_hba.abts_sgl_list_lock);
6831 sglq_entry = __lpfc_get_active_sglq(phba, xri);
6832 if (!sglq_entry || (sglq_entry->sli4_xritag != xri)) {
6833 spin_unlock_irqrestore(&phba->hbalock, iflag);
6836 sglq_entry->state = SGL_XRI_ABORTED;
6837 spin_unlock_irqrestore(&phba->hbalock, iflag);