1 /*******************************************************************
2 * This file is part of the Emulex Linux Device Driver for *
3 * Fibre Channel Host Bus Adapters. *
4 * Copyright (C) 2004-2012 Emulex. All rights reserved. *
5 * EMULEX and SLI are trademarks of Emulex. *
7 * Portions Copyright (C) 2004-2005 Christoph Hellwig *
9 * This program is free software; you can redistribute it and/or *
10 * modify it under the terms of version 2 of the GNU General *
11 * Public License as published by the Free Software Foundation. *
12 * This program is distributed in the hope that it will be useful. *
13 * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND *
14 * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, *
15 * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE *
16 * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *
17 * TO BE LEGALLY INVALID. See the GNU General Public License for *
18 * more details, a copy of which can be found in the file COPYING *
19 * included with this package. *
20 *******************************************************************/
21 /* See Fibre Channel protocol T11 FC-LS for details */
22 #include <linux/blkdev.h>
23 #include <linux/pci.h>
24 #include <linux/slab.h>
25 #include <linux/interrupt.h>
27 #include <scsi/scsi.h>
28 #include <scsi/scsi_device.h>
29 #include <scsi/scsi_host.h>
30 #include <scsi/scsi_transport_fc.h>
35 #include "lpfc_sli4.h"
37 #include "lpfc_disc.h"
38 #include "lpfc_scsi.h"
40 #include "lpfc_logmsg.h"
41 #include "lpfc_crtn.h"
42 #include "lpfc_vport.h"
43 #include "lpfc_debugfs.h"
45 static int lpfc_els_retry(struct lpfc_hba *, struct lpfc_iocbq *,
47 static void lpfc_cmpl_fabric_iocb(struct lpfc_hba *, struct lpfc_iocbq *,
49 static void lpfc_fabric_abort_vport(struct lpfc_vport *vport);
50 static int lpfc_issue_els_fdisc(struct lpfc_vport *vport,
51 struct lpfc_nodelist *ndlp, uint8_t retry);
52 static int lpfc_issue_fabric_iocb(struct lpfc_hba *phba,
53 struct lpfc_iocbq *iocb);
55 static int lpfc_max_els_tries = 3;
58 * lpfc_els_chk_latt - Check host link attention event for a vport
59 * @vport: pointer to a host virtual N_Port data structure.
61 * This routine checks whether there is an outstanding host link
62 * attention event during the discovery process with the @vport. It is done
63 * by reading the HBA's Host Attention (HA) register. If there is any host
64 * link attention events during this @vport's discovery process, the @vport
65 * shall be marked as FC_ABORT_DISCOVERY, a host link attention clear shall
66 * be issued if the link state is not already in host link cleared state,
67 * and a return code shall indicate whether the host link attention event
70 * Note that, if either the host link is in state LPFC_LINK_DOWN or @vport
71 * state in LPFC_VPORT_READY, the request for checking host link attention
72 * event will be ignored and a return code shall indicate no host link
73 * attention event had happened.
76 * 0 - no host link attention event happened
77 * 1 - host link attention event happened
80 lpfc_els_chk_latt(struct lpfc_vport *vport)
82 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
83 struct lpfc_hba *phba = vport->phba;
86 if (vport->port_state >= LPFC_VPORT_READY ||
87 phba->link_state == LPFC_LINK_DOWN ||
88 phba->sli_rev > LPFC_SLI_REV3)
91 /* Read the HBA Host Attention Register */
92 if (lpfc_readl(phba->HAregaddr, &ha_copy))
95 if (!(ha_copy & HA_LATT))
98 /* Pending Link Event during Discovery */
99 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
100 "0237 Pending Link Event during "
101 "Discovery: State x%x\n",
102 phba->pport->port_state);
104 /* CLEAR_LA should re-enable link attention events and
105 * we should then immediately take a LATT event. The
106 * LATT processing should call lpfc_linkdown() which
107 * will cleanup any left over in-progress discovery
110 spin_lock_irq(shost->host_lock);
111 vport->fc_flag |= FC_ABORT_DISCOVERY;
112 spin_unlock_irq(shost->host_lock);
114 if (phba->link_state != LPFC_CLEAR_LA)
115 lpfc_issue_clear_la(phba, vport);
121 * lpfc_prep_els_iocb - Allocate and prepare a lpfc iocb data structure
122 * @vport: pointer to a host virtual N_Port data structure.
123 * @expectRsp: flag indicating whether response is expected.
124 * @cmdSize: size of the ELS command.
125 * @retry: number of retries to the command IOCB when it fails.
126 * @ndlp: pointer to a node-list data structure.
127 * @did: destination identifier.
128 * @elscmd: the ELS command code.
130 * This routine is used for allocating a lpfc-IOCB data structure from
131 * the driver lpfc-IOCB free-list and prepare the IOCB with the parameters
132 * passed into the routine for discovery state machine to issue an Extended
133 * Link Service (ELS) commands. It is a generic lpfc-IOCB allocation
134 * and preparation routine that is used by all the discovery state machine
135 * routines and the ELS command-specific fields will be later set up by
136 * the individual discovery machine routines after calling this routine
137 * allocating and preparing a generic IOCB data structure. It fills in the
138 * Buffer Descriptor Entries (BDEs), allocates buffers for both command
139 * payload and response payload (if expected). The reference count on the
140 * ndlp is incremented by 1 and the reference to the ndlp is put into
141 * context1 of the IOCB data structure for this IOCB to hold the ndlp
142 * reference for the command's callback function to access later.
145 * Pointer to the newly allocated/prepared els iocb data structure
146 * NULL - when els iocb data structure allocation/preparation failed
149 lpfc_prep_els_iocb(struct lpfc_vport *vport, uint8_t expectRsp,
150 uint16_t cmdSize, uint8_t retry,
151 struct lpfc_nodelist *ndlp, uint32_t did,
154 struct lpfc_hba *phba = vport->phba;
155 struct lpfc_iocbq *elsiocb;
156 struct lpfc_dmabuf *pcmd, *prsp, *pbuflist;
157 struct ulp_bde64 *bpl;
161 if (!lpfc_is_link_up(phba))
164 /* Allocate buffer for command iocb */
165 elsiocb = lpfc_sli_get_iocbq(phba);
171 * If this command is for fabric controller and HBA running
172 * in FIP mode send FLOGI, FDISC and LOGO as FIP frames.
174 if ((did == Fabric_DID) &&
175 (phba->hba_flag & HBA_FIP_SUPPORT) &&
176 ((elscmd == ELS_CMD_FLOGI) ||
177 (elscmd == ELS_CMD_FDISC) ||
178 (elscmd == ELS_CMD_LOGO)))
181 elsiocb->iocb_flag |=
182 ((LPFC_ELS_ID_FLOGI << LPFC_FIP_ELS_ID_SHIFT)
183 & LPFC_FIP_ELS_ID_MASK);
186 elsiocb->iocb_flag |=
187 ((LPFC_ELS_ID_FDISC << LPFC_FIP_ELS_ID_SHIFT)
188 & LPFC_FIP_ELS_ID_MASK);
191 elsiocb->iocb_flag |=
192 ((LPFC_ELS_ID_LOGO << LPFC_FIP_ELS_ID_SHIFT)
193 & LPFC_FIP_ELS_ID_MASK);
197 elsiocb->iocb_flag &= ~LPFC_FIP_ELS_ID_MASK;
199 icmd = &elsiocb->iocb;
201 /* fill in BDEs for command */
202 /* Allocate buffer for command payload */
203 pcmd = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
205 pcmd->virt = lpfc_mbuf_alloc(phba, MEM_PRI, &pcmd->phys);
206 if (!pcmd || !pcmd->virt)
207 goto els_iocb_free_pcmb_exit;
209 INIT_LIST_HEAD(&pcmd->list);
211 /* Allocate buffer for response payload */
213 prsp = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
215 prsp->virt = lpfc_mbuf_alloc(phba, MEM_PRI,
217 if (!prsp || !prsp->virt)
218 goto els_iocb_free_prsp_exit;
219 INIT_LIST_HEAD(&prsp->list);
223 /* Allocate buffer for Buffer ptr list */
224 pbuflist = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
226 pbuflist->virt = lpfc_mbuf_alloc(phba, MEM_PRI,
228 if (!pbuflist || !pbuflist->virt)
229 goto els_iocb_free_pbuf_exit;
231 INIT_LIST_HEAD(&pbuflist->list);
234 icmd->un.elsreq64.bdl.addrHigh = putPaddrHigh(pbuflist->phys);
235 icmd->un.elsreq64.bdl.addrLow = putPaddrLow(pbuflist->phys);
236 icmd->un.elsreq64.bdl.bdeFlags = BUFF_TYPE_BLP_64;
237 icmd->un.elsreq64.bdl.bdeSize = (2 * sizeof(struct ulp_bde64));
239 icmd->un.elsreq64.remoteID = did; /* DID */
240 icmd->ulpCommand = CMD_ELS_REQUEST64_CR;
241 icmd->ulpTimeout = phba->fc_ratov * 2;
243 icmd->un.xseq64.bdl.addrHigh = putPaddrHigh(pbuflist->phys);
244 icmd->un.xseq64.bdl.addrLow = putPaddrLow(pbuflist->phys);
245 icmd->un.xseq64.bdl.bdeFlags = BUFF_TYPE_BLP_64;
246 icmd->un.xseq64.bdl.bdeSize = sizeof(struct ulp_bde64);
247 icmd->un.xseq64.xmit_els_remoteID = did; /* DID */
248 icmd->ulpCommand = CMD_XMIT_ELS_RSP64_CX;
250 icmd->ulpBdeCount = 1;
252 icmd->ulpClass = CLASS3;
255 * If we have NPIV enabled, we want to send ELS traffic by VPI.
256 * For SLI4, since the driver controls VPIs we also want to include
257 * all ELS pt2pt protocol traffic as well.
259 if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) ||
260 ((phba->sli_rev == LPFC_SLI_REV4) &&
261 (vport->fc_flag & FC_PT2PT))) {
264 icmd->un.elsreq64.myID = vport->fc_myDID;
266 /* For ELS_REQUEST64_CR, use the VPI by default */
267 icmd->ulpContext = phba->vpi_ids[vport->vpi];
271 /* The CT field must be 0=INVALID_RPI for the ECHO cmd */
272 if (elscmd == ELS_CMD_ECHO)
273 icmd->ulpCt_l = 0; /* context = invalid RPI */
275 icmd->ulpCt_l = 1; /* context = VPI */
278 bpl = (struct ulp_bde64 *) pbuflist->virt;
279 bpl->addrLow = le32_to_cpu(putPaddrLow(pcmd->phys));
280 bpl->addrHigh = le32_to_cpu(putPaddrHigh(pcmd->phys));
281 bpl->tus.f.bdeSize = cmdSize;
282 bpl->tus.f.bdeFlags = 0;
283 bpl->tus.w = le32_to_cpu(bpl->tus.w);
287 bpl->addrLow = le32_to_cpu(putPaddrLow(prsp->phys));
288 bpl->addrHigh = le32_to_cpu(putPaddrHigh(prsp->phys));
289 bpl->tus.f.bdeSize = FCELSSIZE;
290 bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64;
291 bpl->tus.w = le32_to_cpu(bpl->tus.w);
294 /* prevent preparing iocb with NULL ndlp reference */
295 elsiocb->context1 = lpfc_nlp_get(ndlp);
296 if (!elsiocb->context1)
297 goto els_iocb_free_pbuf_exit;
298 elsiocb->context2 = pcmd;
299 elsiocb->context3 = pbuflist;
300 elsiocb->retry = retry;
301 elsiocb->vport = vport;
302 elsiocb->drvrTimeout = (phba->fc_ratov << 1) + LPFC_DRVR_TIMEOUT;
305 list_add(&prsp->list, &pcmd->list);
308 /* Xmit ELS command <elsCmd> to remote NPORT <did> */
309 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
310 "0116 Xmit ELS command x%x to remote "
311 "NPORT x%x I/O tag: x%x, port state: x%x\n",
312 elscmd, did, elsiocb->iotag,
315 /* Xmit ELS response <elsCmd> to remote NPORT <did> */
316 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
317 "0117 Xmit ELS response x%x to remote "
318 "NPORT x%x I/O tag: x%x, size: x%x\n",
319 elscmd, ndlp->nlp_DID, elsiocb->iotag,
324 els_iocb_free_pbuf_exit:
326 lpfc_mbuf_free(phba, prsp->virt, prsp->phys);
329 els_iocb_free_prsp_exit:
330 lpfc_mbuf_free(phba, pcmd->virt, pcmd->phys);
333 els_iocb_free_pcmb_exit:
335 lpfc_sli_release_iocbq(phba, elsiocb);
340 * lpfc_issue_fabric_reglogin - Issue fabric registration login for a vport
341 * @vport: pointer to a host virtual N_Port data structure.
343 * This routine issues a fabric registration login for a @vport. An
344 * active ndlp node with Fabric_DID must already exist for this @vport.
345 * The routine invokes two mailbox commands to carry out fabric registration
346 * login through the HBA firmware: the first mailbox command requests the
347 * HBA to perform link configuration for the @vport; and the second mailbox
348 * command requests the HBA to perform the actual fabric registration login
352 * 0 - successfully issued fabric registration login for @vport
353 * -ENXIO -- failed to issue fabric registration login for @vport
356 lpfc_issue_fabric_reglogin(struct lpfc_vport *vport)
358 struct lpfc_hba *phba = vport->phba;
360 struct lpfc_dmabuf *mp;
361 struct lpfc_nodelist *ndlp;
362 struct serv_parm *sp;
366 sp = &phba->fc_fabparam;
367 ndlp = lpfc_findnode_did(vport, Fabric_DID);
368 if (!ndlp || !NLP_CHK_NODE_ACT(ndlp)) {
373 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
379 vport->port_state = LPFC_FABRIC_CFG_LINK;
380 lpfc_config_link(phba, mbox);
381 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
384 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
385 if (rc == MBX_NOT_FINISHED) {
390 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
395 rc = lpfc_reg_rpi(phba, vport->vpi, Fabric_DID, (uint8_t *)sp, mbox,
402 mbox->mbox_cmpl = lpfc_mbx_cmpl_fabric_reg_login;
404 /* increment the reference count on ndlp to hold reference
405 * for the callback routine.
407 mbox->context2 = lpfc_nlp_get(ndlp);
409 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
410 if (rc == MBX_NOT_FINISHED) {
412 goto fail_issue_reg_login;
417 fail_issue_reg_login:
418 /* decrement the reference count on ndlp just incremented
419 * for the failed mbox command.
422 mp = (struct lpfc_dmabuf *) mbox->context1;
423 lpfc_mbuf_free(phba, mp->virt, mp->phys);
426 mempool_free(mbox, phba->mbox_mem_pool);
429 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
430 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
431 "0249 Cannot issue Register Fabric login: Err %d\n", err);
436 * lpfc_issue_reg_vfi - Register VFI for this vport's fabric login
437 * @vport: pointer to a host virtual N_Port data structure.
439 * This routine issues a REG_VFI mailbox for the vfi, vpi, fcfi triplet for
440 * the @vport. This mailbox command is necessary for SLI4 port only.
443 * 0 - successfully issued REG_VFI for @vport
444 * A failure code otherwise.
447 lpfc_issue_reg_vfi(struct lpfc_vport *vport)
449 struct lpfc_hba *phba = vport->phba;
451 struct lpfc_nodelist *ndlp;
452 struct serv_parm *sp;
453 struct lpfc_dmabuf *dmabuf;
456 sp = &phba->fc_fabparam;
457 /* move forward in case of SLI4 FC port loopback test and pt2pt mode */
458 if ((phba->sli_rev == LPFC_SLI_REV4) &&
459 !(phba->link_flag & LS_LOOPBACK_MODE) &&
460 !(vport->fc_flag & FC_PT2PT)) {
461 ndlp = lpfc_findnode_did(vport, Fabric_DID);
462 if (!ndlp || !NLP_CHK_NODE_ACT(ndlp)) {
468 dmabuf = kzalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
473 dmabuf->virt = lpfc_mbuf_alloc(phba, MEM_PRI, &dmabuf->phys);
476 goto fail_free_dmabuf;
479 mboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
482 goto fail_free_coherent;
484 vport->port_state = LPFC_FABRIC_CFG_LINK;
485 memcpy(dmabuf->virt, &phba->fc_fabparam, sizeof(vport->fc_sparam));
486 lpfc_reg_vfi(mboxq, vport, dmabuf->phys);
487 mboxq->mbox_cmpl = lpfc_mbx_cmpl_reg_vfi;
488 mboxq->vport = vport;
489 mboxq->context1 = dmabuf;
490 rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_NOWAIT);
491 if (rc == MBX_NOT_FINISHED) {
498 mempool_free(mboxq, phba->mbox_mem_pool);
500 lpfc_mbuf_free(phba, dmabuf->virt, dmabuf->phys);
504 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
505 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
506 "0289 Issue Register VFI failed: Err %d\n", rc);
511 * lpfc_issue_unreg_vfi - Unregister VFI for this vport's fabric login
512 * @vport: pointer to a host virtual N_Port data structure.
514 * This routine issues a UNREG_VFI mailbox with the vfi, vpi, fcfi triplet for
515 * the @vport. This mailbox command is necessary for SLI4 port only.
518 * 0 - successfully issued REG_VFI for @vport
519 * A failure code otherwise.
522 lpfc_issue_unreg_vfi(struct lpfc_vport *vport)
524 struct lpfc_hba *phba = vport->phba;
525 struct Scsi_Host *shost;
529 mboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
531 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX,
532 "2556 UNREG_VFI mbox allocation failed"
533 "HBA state x%x\n", phba->pport->port_state);
537 lpfc_unreg_vfi(mboxq, vport);
538 mboxq->vport = vport;
539 mboxq->mbox_cmpl = lpfc_unregister_vfi_cmpl;
541 rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_NOWAIT);
542 if (rc == MBX_NOT_FINISHED) {
543 lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX,
544 "2557 UNREG_VFI issue mbox failed rc x%x "
546 rc, phba->pport->port_state);
547 mempool_free(mboxq, phba->mbox_mem_pool);
551 shost = lpfc_shost_from_vport(vport);
552 spin_lock_irq(shost->host_lock);
553 vport->fc_flag &= ~FC_VFI_REGISTERED;
554 spin_unlock_irq(shost->host_lock);
559 * lpfc_check_clean_addr_bit - Check whether assigned FCID is clean.
560 * @vport: pointer to a host virtual N_Port data structure.
561 * @sp: pointer to service parameter data structure.
563 * This routine is called from FLOGI/FDISC completion handler functions.
564 * lpfc_check_clean_addr_bit return 1 when FCID/Fabric portname/ Fabric
565 * node nodename is changed in the completion service parameter else return
566 * 0. This function also set flag in the vport data structure to delay
567 * NP_Port discovery after the FLOGI/FDISC completion if Clean address bit
568 * in FLOGI/FDISC response is cleared and FCID/Fabric portname/ Fabric
569 * node nodename is changed in the completion service parameter.
572 * 0 - FCID and Fabric Nodename and Fabric portname is not changed.
573 * 1 - FCID or Fabric Nodename or Fabric portname is changed.
577 lpfc_check_clean_addr_bit(struct lpfc_vport *vport,
578 struct serv_parm *sp)
580 uint8_t fabric_param_changed = 0;
581 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
583 if ((vport->fc_prevDID != vport->fc_myDID) ||
584 memcmp(&vport->fabric_portname, &sp->portName,
585 sizeof(struct lpfc_name)) ||
586 memcmp(&vport->fabric_nodename, &sp->nodeName,
587 sizeof(struct lpfc_name)))
588 fabric_param_changed = 1;
591 * Word 1 Bit 31 in common service parameter is overloaded.
592 * Word 1 Bit 31 in FLOGI request is multiple NPort request
593 * Word 1 Bit 31 in FLOGI response is clean address bit
595 * If fabric parameter is changed and clean address bit is
596 * cleared delay nport discovery if
597 * - vport->fc_prevDID != 0 (not initial discovery) OR
598 * - lpfc_delay_discovery module parameter is set.
600 if (fabric_param_changed && !sp->cmn.clean_address_bit &&
601 (vport->fc_prevDID || lpfc_delay_discovery)) {
602 spin_lock_irq(shost->host_lock);
603 vport->fc_flag |= FC_DISC_DELAYED;
604 spin_unlock_irq(shost->host_lock);
607 return fabric_param_changed;
612 * lpfc_cmpl_els_flogi_fabric - Completion function for flogi to a fabric port
613 * @vport: pointer to a host virtual N_Port data structure.
614 * @ndlp: pointer to a node-list data structure.
615 * @sp: pointer to service parameter data structure.
616 * @irsp: pointer to the IOCB within the lpfc response IOCB.
618 * This routine is invoked by the lpfc_cmpl_els_flogi() completion callback
619 * function to handle the completion of a Fabric Login (FLOGI) into a fabric
620 * port in a fabric topology. It properly sets up the parameters to the @ndlp
621 * from the IOCB response. It also check the newly assigned N_Port ID to the
622 * @vport against the previously assigned N_Port ID. If it is different from
623 * the previously assigned Destination ID (DID), the lpfc_unreg_rpi() routine
624 * is invoked on all the remaining nodes with the @vport to unregister the
625 * Remote Port Indicators (RPIs). Finally, the lpfc_issue_fabric_reglogin()
626 * is invoked to register login to the fabric.
629 * 0 - Success (currently, always return 0)
632 lpfc_cmpl_els_flogi_fabric(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
633 struct serv_parm *sp, IOCB_t *irsp)
635 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
636 struct lpfc_hba *phba = vport->phba;
637 struct lpfc_nodelist *np;
638 struct lpfc_nodelist *next_np;
639 uint8_t fabric_param_changed;
641 spin_lock_irq(shost->host_lock);
642 vport->fc_flag |= FC_FABRIC;
643 spin_unlock_irq(shost->host_lock);
645 phba->fc_edtov = be32_to_cpu(sp->cmn.e_d_tov);
646 if (sp->cmn.edtovResolution) /* E_D_TOV ticks are in nanoseconds */
647 phba->fc_edtov = (phba->fc_edtov + 999999) / 1000000;
649 phba->fc_edtovResol = sp->cmn.edtovResolution;
650 phba->fc_ratov = (be32_to_cpu(sp->cmn.w2.r_a_tov) + 999) / 1000;
652 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
653 spin_lock_irq(shost->host_lock);
654 vport->fc_flag |= FC_PUBLIC_LOOP;
655 spin_unlock_irq(shost->host_lock);
658 vport->fc_myDID = irsp->un.ulpWord[4] & Mask_DID;
659 memcpy(&ndlp->nlp_portname, &sp->portName, sizeof(struct lpfc_name));
660 memcpy(&ndlp->nlp_nodename, &sp->nodeName, sizeof(struct lpfc_name));
661 ndlp->nlp_class_sup = 0;
662 if (sp->cls1.classValid)
663 ndlp->nlp_class_sup |= FC_COS_CLASS1;
664 if (sp->cls2.classValid)
665 ndlp->nlp_class_sup |= FC_COS_CLASS2;
666 if (sp->cls3.classValid)
667 ndlp->nlp_class_sup |= FC_COS_CLASS3;
668 if (sp->cls4.classValid)
669 ndlp->nlp_class_sup |= FC_COS_CLASS4;
670 ndlp->nlp_maxframe = ((sp->cmn.bbRcvSizeMsb & 0x0F) << 8) |
671 sp->cmn.bbRcvSizeLsb;
673 fabric_param_changed = lpfc_check_clean_addr_bit(vport, sp);
674 memcpy(&vport->fabric_portname, &sp->portName,
675 sizeof(struct lpfc_name));
676 memcpy(&vport->fabric_nodename, &sp->nodeName,
677 sizeof(struct lpfc_name));
678 memcpy(&phba->fc_fabparam, sp, sizeof(struct serv_parm));
680 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) {
681 if (sp->cmn.response_multiple_NPort) {
682 lpfc_printf_vlog(vport, KERN_WARNING,
684 "1816 FLOGI NPIV supported, "
685 "response data 0x%x\n",
686 sp->cmn.response_multiple_NPort);
687 spin_lock_irq(&phba->hbalock);
688 phba->link_flag |= LS_NPIV_FAB_SUPPORTED;
689 spin_unlock_irq(&phba->hbalock);
691 /* Because we asked f/w for NPIV it still expects us
692 to call reg_vnpid atleast for the physcial host */
693 lpfc_printf_vlog(vport, KERN_WARNING,
695 "1817 Fabric does not support NPIV "
696 "- configuring single port mode.\n");
697 spin_lock_irq(&phba->hbalock);
698 phba->link_flag &= ~LS_NPIV_FAB_SUPPORTED;
699 spin_unlock_irq(&phba->hbalock);
703 if (fabric_param_changed &&
704 !(vport->fc_flag & FC_VPORT_NEEDS_REG_VPI)) {
706 /* If our NportID changed, we need to ensure all
707 * remaining NPORTs get unreg_login'ed.
709 list_for_each_entry_safe(np, next_np,
710 &vport->fc_nodes, nlp_listp) {
711 if (!NLP_CHK_NODE_ACT(np))
713 if ((np->nlp_state != NLP_STE_NPR_NODE) ||
714 !(np->nlp_flag & NLP_NPR_ADISC))
716 spin_lock_irq(shost->host_lock);
717 np->nlp_flag &= ~NLP_NPR_ADISC;
718 spin_unlock_irq(shost->host_lock);
719 lpfc_unreg_rpi(vport, np);
721 lpfc_cleanup_pending_mbox(vport);
723 if (phba->sli_rev == LPFC_SLI_REV4) {
724 lpfc_sli4_unreg_all_rpis(vport);
725 lpfc_mbx_unreg_vpi(vport);
726 spin_lock_irq(shost->host_lock);
727 vport->fc_flag |= FC_VPORT_NEEDS_INIT_VPI;
728 spin_unlock_irq(shost->host_lock);
732 * For SLI3 and SLI4, the VPI needs to be reregistered in
733 * response to this fabric parameter change event.
735 spin_lock_irq(shost->host_lock);
736 vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
737 spin_unlock_irq(shost->host_lock);
738 } else if ((phba->sli_rev == LPFC_SLI_REV4) &&
739 !(vport->fc_flag & FC_VPORT_NEEDS_REG_VPI)) {
741 * Driver needs to re-reg VPI in order for f/w
742 * to update the MAC address.
744 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
745 lpfc_register_new_vport(phba, vport, ndlp);
749 if (phba->sli_rev < LPFC_SLI_REV4) {
750 lpfc_nlp_set_state(vport, ndlp, NLP_STE_REG_LOGIN_ISSUE);
751 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED &&
752 vport->fc_flag & FC_VPORT_NEEDS_REG_VPI)
753 lpfc_register_new_vport(phba, vport, ndlp);
755 lpfc_issue_fabric_reglogin(vport);
757 ndlp->nlp_type |= NLP_FABRIC;
758 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
759 if ((!(vport->fc_flag & FC_VPORT_NEEDS_REG_VPI)) &&
760 (vport->vpi_state & LPFC_VPI_REGISTERED)) {
761 lpfc_start_fdiscs(phba);
762 lpfc_do_scr_ns_plogi(phba, vport);
763 } else if (vport->fc_flag & FC_VFI_REGISTERED)
764 lpfc_issue_init_vpi(vport);
766 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
767 "3135 Need register VFI: (x%x/%x)\n",
768 vport->fc_prevDID, vport->fc_myDID);
769 lpfc_issue_reg_vfi(vport);
776 * lpfc_cmpl_els_flogi_nport - Completion function for flogi to an N_Port
777 * @vport: pointer to a host virtual N_Port data structure.
778 * @ndlp: pointer to a node-list data structure.
779 * @sp: pointer to service parameter data structure.
781 * This routine is invoked by the lpfc_cmpl_els_flogi() completion callback
782 * function to handle the completion of a Fabric Login (FLOGI) into an N_Port
783 * in a point-to-point topology. First, the @vport's N_Port Name is compared
784 * with the received N_Port Name: if the @vport's N_Port Name is greater than
785 * the received N_Port Name lexicographically, this node shall assign local
786 * N_Port ID (PT2PT_LocalID: 1) and remote N_Port ID (PT2PT_RemoteID: 2) and
787 * will send out Port Login (PLOGI) with the N_Port IDs assigned. Otherwise,
788 * this node shall just wait for the remote node to issue PLOGI and assign
796 lpfc_cmpl_els_flogi_nport(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
797 struct serv_parm *sp)
799 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
800 struct lpfc_hba *phba = vport->phba;
804 spin_lock_irq(shost->host_lock);
805 vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
806 spin_unlock_irq(shost->host_lock);
808 phba->fc_edtov = FF_DEF_EDTOV;
809 phba->fc_ratov = FF_DEF_RATOV;
810 rc = memcmp(&vport->fc_portname, &sp->portName,
811 sizeof(vport->fc_portname));
812 memcpy(&phba->fc_fabparam, sp, sizeof(struct serv_parm));
815 /* This side will initiate the PLOGI */
816 spin_lock_irq(shost->host_lock);
817 vport->fc_flag |= FC_PT2PT_PLOGI;
818 spin_unlock_irq(shost->host_lock);
821 * N_Port ID cannot be 0, set our to LocalID the other
822 * side will be RemoteID.
827 vport->fc_myDID = PT2PT_LocalID;
829 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
833 lpfc_config_link(phba, mbox);
835 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
837 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
838 if (rc == MBX_NOT_FINISHED) {
839 mempool_free(mbox, phba->mbox_mem_pool);
844 * For SLI4, the VFI/VPI are registered AFTER the
845 * Nport with the higher WWPN sends the PLOGI with
846 * an assigned NPortId.
850 if ((phba->sli_rev == LPFC_SLI_REV4) && rc)
851 lpfc_issue_reg_vfi(vport);
853 /* Decrement ndlp reference count indicating that ndlp can be
854 * safely released when other references to it are done.
858 ndlp = lpfc_findnode_did(vport, PT2PT_RemoteID);
861 * Cannot find existing Fabric ndlp, so allocate a
864 ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL);
867 lpfc_nlp_init(vport, ndlp, PT2PT_RemoteID);
868 } else if (!NLP_CHK_NODE_ACT(ndlp)) {
869 ndlp = lpfc_enable_node(vport, ndlp,
870 NLP_STE_UNUSED_NODE);
875 memcpy(&ndlp->nlp_portname, &sp->portName,
876 sizeof(struct lpfc_name));
877 memcpy(&ndlp->nlp_nodename, &sp->nodeName,
878 sizeof(struct lpfc_name));
879 /* Set state will put ndlp onto node list if not already done */
880 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
881 spin_lock_irq(shost->host_lock);
882 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
883 spin_unlock_irq(shost->host_lock);
885 /* This side will wait for the PLOGI, decrement ndlp reference
886 * count indicating that ndlp can be released when other
887 * references to it are done.
891 /* If we are pt2pt with another NPort, force NPIV off! */
892 phba->sli3_options &= ~LPFC_SLI3_NPIV_ENABLED;
894 spin_lock_irq(shost->host_lock);
895 vport->fc_flag |= FC_PT2PT;
896 spin_unlock_irq(shost->host_lock);
898 /* Start discovery - this should just do CLEAR_LA */
899 lpfc_disc_start(vport);
906 * lpfc_cmpl_els_flogi - Completion callback function for flogi
907 * @phba: pointer to lpfc hba data structure.
908 * @cmdiocb: pointer to lpfc command iocb data structure.
909 * @rspiocb: pointer to lpfc response iocb data structure.
911 * This routine is the top-level completion callback function for issuing
912 * a Fabric Login (FLOGI) command. If the response IOCB reported error,
913 * the lpfc_els_retry() routine shall be invoked to retry the FLOGI. If
914 * retry has been made (either immediately or delayed with lpfc_els_retry()
915 * returning 1), the command IOCB will be released and function returned.
916 * If the retry attempt has been given up (possibly reach the maximum
917 * number of retries), one additional decrement of ndlp reference shall be
918 * invoked before going out after releasing the command IOCB. This will
919 * actually release the remote node (Note, lpfc_els_free_iocb() will also
920 * invoke one decrement of ndlp reference count). If no error reported in
921 * the IOCB status, the command Port ID field is used to determine whether
922 * this is a point-to-point topology or a fabric topology: if the Port ID
923 * field is assigned, it is a fabric topology; otherwise, it is a
924 * point-to-point topology. The routine lpfc_cmpl_els_flogi_fabric() or
925 * lpfc_cmpl_els_flogi_nport() shall be invoked accordingly to handle the
926 * specific topology completion conditions.
929 lpfc_cmpl_els_flogi(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
930 struct lpfc_iocbq *rspiocb)
932 struct lpfc_vport *vport = cmdiocb->vport;
933 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
934 IOCB_t *irsp = &rspiocb->iocb;
935 struct lpfc_nodelist *ndlp = cmdiocb->context1;
936 struct lpfc_dmabuf *pcmd = cmdiocb->context2, *prsp;
937 struct serv_parm *sp;
941 /* Check to see if link went down during discovery */
942 if (lpfc_els_chk_latt(vport)) {
943 /* One additional decrement on node reference count to
944 * trigger the release of the node
950 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
951 "FLOGI cmpl: status:x%x/x%x state:x%x",
952 irsp->ulpStatus, irsp->un.ulpWord[4],
955 if (irsp->ulpStatus) {
957 * In case of FIP mode, perform roundrobin FCF failover
958 * due to new FCF discovery
960 if ((phba->hba_flag & HBA_FIP_SUPPORT) &&
961 (phba->fcf.fcf_flag & FCF_DISCOVERY)) {
962 if (phba->link_state < LPFC_LINK_UP)
963 goto stop_rr_fcf_flogi;
964 if ((phba->fcoe_cvl_eventtag_attn ==
965 phba->fcoe_cvl_eventtag) &&
966 (irsp->ulpStatus == IOSTAT_LOCAL_REJECT) &&
967 ((irsp->un.ulpWord[4] & IOERR_PARAM_MASK) ==
969 goto stop_rr_fcf_flogi;
971 phba->fcoe_cvl_eventtag_attn =
972 phba->fcoe_cvl_eventtag;
973 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP | LOG_ELS,
974 "2611 FLOGI failed on FCF (x%x), "
975 "status:x%x/x%x, tmo:x%x, perform "
976 "roundrobin FCF failover\n",
977 phba->fcf.current_rec.fcf_indx,
978 irsp->ulpStatus, irsp->un.ulpWord[4],
980 lpfc_sli4_set_fcf_flogi_fail(phba,
981 phba->fcf.current_rec.fcf_indx);
982 fcf_index = lpfc_sli4_fcf_rr_next_index_get(phba);
983 rc = lpfc_sli4_fcf_rr_next_proc(vport, fcf_index);
990 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
991 "2858 FLOGI failure Status:x%x/x%x TMO:x%x\n",
992 irsp->ulpStatus, irsp->un.ulpWord[4],
995 /* Check for retry */
996 if (lpfc_els_retry(phba, cmdiocb, rspiocb))
1000 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1001 "0100 FLOGI failure Status:x%x/x%x TMO:x%x\n",
1002 irsp->ulpStatus, irsp->un.ulpWord[4],
1005 /* FLOGI failed, so there is no fabric */
1006 spin_lock_irq(shost->host_lock);
1007 vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
1008 spin_unlock_irq(shost->host_lock);
1010 /* If private loop, then allow max outstanding els to be
1011 * LPFC_MAX_DISC_THREADS (32). Scanning in the case of no
1012 * alpa map would take too long otherwise.
1014 if (phba->alpa_map[0] == 0)
1015 vport->cfg_discovery_threads = LPFC_MAX_DISC_THREADS;
1016 if ((phba->sli_rev == LPFC_SLI_REV4) &&
1017 (!(vport->fc_flag & FC_VFI_REGISTERED) ||
1018 (vport->fc_prevDID != vport->fc_myDID))) {
1019 if (vport->fc_flag & FC_VFI_REGISTERED)
1020 lpfc_sli4_unreg_all_rpis(vport);
1021 lpfc_issue_reg_vfi(vport);
1027 spin_lock_irq(shost->host_lock);
1028 vport->fc_flag &= ~FC_VPORT_CVL_RCVD;
1029 vport->fc_flag &= ~FC_VPORT_LOGO_RCVD;
1030 spin_unlock_irq(shost->host_lock);
1033 * The FLogI succeeded. Sync the data for the CPU before
1036 prsp = list_get_first(&pcmd->list, struct lpfc_dmabuf, list);
1038 sp = prsp->virt + sizeof(uint32_t);
1040 /* FLOGI completes successfully */
1041 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
1042 "0101 FLOGI completes successfully "
1043 "Data: x%x x%x x%x x%x\n",
1044 irsp->un.ulpWord[4], sp->cmn.e_d_tov,
1045 sp->cmn.w2.r_a_tov, sp->cmn.edtovResolution);
1047 if (vport->port_state == LPFC_FLOGI) {
1049 * If Common Service Parameters indicate Nport
1050 * we are point to point, if Fport we are Fabric.
1053 rc = lpfc_cmpl_els_flogi_fabric(vport, ndlp, sp, irsp);
1054 else if (!(phba->hba_flag & HBA_FCOE_MODE))
1055 rc = lpfc_cmpl_els_flogi_nport(vport, ndlp, sp);
1057 lpfc_printf_vlog(vport, KERN_ERR,
1059 "2831 FLOGI response with cleared Fabric "
1060 "bit fcf_index 0x%x "
1061 "Switch Name %02x%02x%02x%02x%02x%02x%02x%02x "
1063 "%02x%02x%02x%02x%02x%02x%02x%02x\n",
1064 phba->fcf.current_rec.fcf_indx,
1065 phba->fcf.current_rec.switch_name[0],
1066 phba->fcf.current_rec.switch_name[1],
1067 phba->fcf.current_rec.switch_name[2],
1068 phba->fcf.current_rec.switch_name[3],
1069 phba->fcf.current_rec.switch_name[4],
1070 phba->fcf.current_rec.switch_name[5],
1071 phba->fcf.current_rec.switch_name[6],
1072 phba->fcf.current_rec.switch_name[7],
1073 phba->fcf.current_rec.fabric_name[0],
1074 phba->fcf.current_rec.fabric_name[1],
1075 phba->fcf.current_rec.fabric_name[2],
1076 phba->fcf.current_rec.fabric_name[3],
1077 phba->fcf.current_rec.fabric_name[4],
1078 phba->fcf.current_rec.fabric_name[5],
1079 phba->fcf.current_rec.fabric_name[6],
1080 phba->fcf.current_rec.fabric_name[7]);
1082 spin_lock_irq(&phba->hbalock);
1083 phba->fcf.fcf_flag &= ~FCF_DISCOVERY;
1084 phba->hba_flag &= ~(FCF_RR_INPROG | HBA_DEVLOSS_TMO);
1085 spin_unlock_irq(&phba->hbalock);
1089 /* Mark the FCF discovery process done */
1090 if (phba->hba_flag & HBA_FIP_SUPPORT)
1091 lpfc_printf_vlog(vport, KERN_INFO, LOG_FIP |
1093 "2769 FLOGI to FCF (x%x) "
1094 "completed successfully\n",
1095 phba->fcf.current_rec.fcf_indx);
1096 spin_lock_irq(&phba->hbalock);
1097 phba->fcf.fcf_flag &= ~FCF_DISCOVERY;
1098 phba->hba_flag &= ~(FCF_RR_INPROG | HBA_DEVLOSS_TMO);
1099 spin_unlock_irq(&phba->hbalock);
1107 if (!lpfc_error_lost_link(irsp)) {
1108 /* FLOGI failed, so just use loop map to make discovery list */
1109 lpfc_disc_list_loopmap(vport);
1111 /* Start discovery */
1112 lpfc_disc_start(vport);
1113 } else if (((irsp->ulpStatus != IOSTAT_LOCAL_REJECT) ||
1114 (((irsp->un.ulpWord[4] & IOERR_PARAM_MASK) !=
1115 IOERR_SLI_ABORTED) &&
1116 ((irsp->un.ulpWord[4] & IOERR_PARAM_MASK) !=
1117 IOERR_SLI_DOWN))) &&
1118 (phba->link_state != LPFC_CLEAR_LA)) {
1119 /* If FLOGI failed enable link interrupt. */
1120 lpfc_issue_clear_la(phba, vport);
1123 lpfc_els_free_iocb(phba, cmdiocb);
1127 * lpfc_issue_els_flogi - Issue an flogi iocb command for a vport
1128 * @vport: pointer to a host virtual N_Port data structure.
1129 * @ndlp: pointer to a node-list data structure.
1130 * @retry: number of retries to the command IOCB.
1132 * This routine issues a Fabric Login (FLOGI) Request ELS command
1133 * for a @vport. The initiator service parameters are put into the payload
1134 * of the FLOGI Request IOCB and the top-level callback function pointer
1135 * to lpfc_cmpl_els_flogi() routine is put to the IOCB completion callback
1136 * function field. The lpfc_issue_fabric_iocb routine is invoked to send
1137 * out FLOGI ELS command with one outstanding fabric IOCB at a time.
1139 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
1140 * will be incremented by 1 for holding the ndlp and the reference to ndlp
1141 * will be stored into the context1 field of the IOCB for the completion
1142 * callback function to the FLOGI ELS command.
1145 * 0 - successfully issued flogi iocb for @vport
1146 * 1 - failed to issue flogi iocb for @vport
1149 lpfc_issue_els_flogi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1152 struct lpfc_hba *phba = vport->phba;
1153 struct serv_parm *sp;
1155 struct lpfc_iocbq *elsiocb;
1156 struct lpfc_sli_ring *pring;
1162 pring = &phba->sli.ring[LPFC_ELS_RING];
1164 cmdsize = (sizeof(uint32_t) + sizeof(struct serv_parm));
1165 elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp,
1166 ndlp->nlp_DID, ELS_CMD_FLOGI);
1171 icmd = &elsiocb->iocb;
1172 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
1174 /* For FLOGI request, remainder of payload is service parameters */
1175 *((uint32_t *) (pcmd)) = ELS_CMD_FLOGI;
1176 pcmd += sizeof(uint32_t);
1177 memcpy(pcmd, &vport->fc_sparam, sizeof(struct serv_parm));
1178 sp = (struct serv_parm *) pcmd;
1180 /* Setup CSPs accordingly for Fabric */
1181 sp->cmn.e_d_tov = 0;
1182 sp->cmn.w2.r_a_tov = 0;
1183 sp->cmn.virtual_fabric_support = 0;
1184 sp->cls1.classValid = 0;
1185 if (sp->cmn.fcphLow < FC_PH3)
1186 sp->cmn.fcphLow = FC_PH3;
1187 if (sp->cmn.fcphHigh < FC_PH3)
1188 sp->cmn.fcphHigh = FC_PH3;
1190 if (phba->sli_rev == LPFC_SLI_REV4) {
1191 if (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) ==
1192 LPFC_SLI_INTF_IF_TYPE_0) {
1193 elsiocb->iocb.ulpCt_h = ((SLI4_CT_FCFI >> 1) & 1);
1194 elsiocb->iocb.ulpCt_l = (SLI4_CT_FCFI & 1);
1195 /* FLOGI needs to be 3 for WQE FCFI */
1196 /* Set the fcfi to the fcfi we registered with */
1197 elsiocb->iocb.ulpContext = phba->fcf.fcfi;
1199 /* Can't do SLI4 class2 without support sequence coalescing */
1200 sp->cls2.classValid = 0;
1201 sp->cls2.seqDelivery = 0;
1203 /* Historical, setting sequential-delivery bit for SLI3 */
1204 sp->cls2.seqDelivery = (sp->cls2.classValid) ? 1 : 0;
1205 sp->cls3.seqDelivery = (sp->cls3.classValid) ? 1 : 0;
1206 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) {
1207 sp->cmn.request_multiple_Nport = 1;
1208 /* For FLOGI, Let FLOGI rsp set the NPortID for VPI 0 */
1212 sp->cmn.request_multiple_Nport = 0;
1215 if (phba->fc_topology != LPFC_TOPOLOGY_LOOP) {
1216 icmd->un.elsreq64.myID = 0;
1217 icmd->un.elsreq64.fl = 1;
1220 tmo = phba->fc_ratov;
1221 phba->fc_ratov = LPFC_DISC_FLOGI_TMO;
1222 lpfc_set_disctmo(vport);
1223 phba->fc_ratov = tmo;
1225 phba->fc_stat.elsXmitFLOGI++;
1226 elsiocb->iocb_cmpl = lpfc_cmpl_els_flogi;
1228 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
1229 "Issue FLOGI: opt:x%x",
1230 phba->sli3_options, 0, 0);
1232 rc = lpfc_issue_fabric_iocb(phba, elsiocb);
1233 if (rc == IOCB_ERROR) {
1234 lpfc_els_free_iocb(phba, elsiocb);
1241 * lpfc_els_abort_flogi - Abort all outstanding flogi iocbs
1242 * @phba: pointer to lpfc hba data structure.
1244 * This routine aborts all the outstanding Fabric Login (FLOGI) IOCBs
1245 * with a @phba. This routine walks all the outstanding IOCBs on the txcmplq
1246 * list and issues an abort IOCB commond on each outstanding IOCB that
1247 * contains a active Fabric_DID ndlp. Note that this function is to issue
1248 * the abort IOCB command on all the outstanding IOCBs, thus when this
1249 * function returns, it does not guarantee all the IOCBs are actually aborted.
1252 * 0 - Successfully issued abort iocb on all outstanding flogis (Always 0)
1255 lpfc_els_abort_flogi(struct lpfc_hba *phba)
1257 struct lpfc_sli_ring *pring;
1258 struct lpfc_iocbq *iocb, *next_iocb;
1259 struct lpfc_nodelist *ndlp;
1262 /* Abort outstanding I/O on NPort <nlp_DID> */
1263 lpfc_printf_log(phba, KERN_INFO, LOG_DISCOVERY,
1264 "0201 Abort outstanding I/O on NPort x%x\n",
1267 pring = &phba->sli.ring[LPFC_ELS_RING];
1270 * Check the txcmplq for an iocb that matches the nport the driver is
1273 spin_lock_irq(&phba->hbalock);
1274 list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) {
1276 if (icmd->ulpCommand == CMD_ELS_REQUEST64_CR) {
1277 ndlp = (struct lpfc_nodelist *)(iocb->context1);
1278 if (ndlp && NLP_CHK_NODE_ACT(ndlp) &&
1279 (ndlp->nlp_DID == Fabric_DID))
1280 lpfc_sli_issue_abort_iotag(phba, pring, iocb);
1283 spin_unlock_irq(&phba->hbalock);
1289 * lpfc_initial_flogi - Issue an initial fabric login for a vport
1290 * @vport: pointer to a host virtual N_Port data structure.
1292 * This routine issues an initial Fabric Login (FLOGI) for the @vport
1293 * specified. It first searches the ndlp with the Fabric_DID (0xfffffe) from
1294 * the @vport's ndlp list. If no such ndlp found, it will create an ndlp and
1295 * put it into the @vport's ndlp list. If an inactive ndlp found on the list,
1296 * it will just be enabled and made active. The lpfc_issue_els_flogi() routine
1297 * is then invoked with the @vport and the ndlp to perform the FLOGI for the
1301 * 0 - failed to issue initial flogi for @vport
1302 * 1 - successfully issued initial flogi for @vport
1305 lpfc_initial_flogi(struct lpfc_vport *vport)
1307 struct lpfc_hba *phba = vport->phba;
1308 struct lpfc_nodelist *ndlp;
1310 vport->port_state = LPFC_FLOGI;
1311 lpfc_set_disctmo(vport);
1313 /* First look for the Fabric ndlp */
1314 ndlp = lpfc_findnode_did(vport, Fabric_DID);
1316 /* Cannot find existing Fabric ndlp, so allocate a new one */
1317 ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL);
1320 lpfc_nlp_init(vport, ndlp, Fabric_DID);
1321 /* Set the node type */
1322 ndlp->nlp_type |= NLP_FABRIC;
1323 /* Put ndlp onto node list */
1324 lpfc_enqueue_node(vport, ndlp);
1325 } else if (!NLP_CHK_NODE_ACT(ndlp)) {
1326 /* re-setup ndlp without removing from node list */
1327 ndlp = lpfc_enable_node(vport, ndlp, NLP_STE_UNUSED_NODE);
1332 if (lpfc_issue_els_flogi(vport, ndlp, 0)) {
1333 /* This decrement of reference count to node shall kick off
1334 * the release of the node.
1343 * lpfc_initial_fdisc - Issue an initial fabric discovery for a vport
1344 * @vport: pointer to a host virtual N_Port data structure.
1346 * This routine issues an initial Fabric Discover (FDISC) for the @vport
1347 * specified. It first searches the ndlp with the Fabric_DID (0xfffffe) from
1348 * the @vport's ndlp list. If no such ndlp found, it will create an ndlp and
1349 * put it into the @vport's ndlp list. If an inactive ndlp found on the list,
1350 * it will just be enabled and made active. The lpfc_issue_els_fdisc() routine
1351 * is then invoked with the @vport and the ndlp to perform the FDISC for the
1355 * 0 - failed to issue initial fdisc for @vport
1356 * 1 - successfully issued initial fdisc for @vport
1359 lpfc_initial_fdisc(struct lpfc_vport *vport)
1361 struct lpfc_hba *phba = vport->phba;
1362 struct lpfc_nodelist *ndlp;
1364 /* First look for the Fabric ndlp */
1365 ndlp = lpfc_findnode_did(vport, Fabric_DID);
1367 /* Cannot find existing Fabric ndlp, so allocate a new one */
1368 ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL);
1371 lpfc_nlp_init(vport, ndlp, Fabric_DID);
1372 /* Put ndlp onto node list */
1373 lpfc_enqueue_node(vport, ndlp);
1374 } else if (!NLP_CHK_NODE_ACT(ndlp)) {
1375 /* re-setup ndlp without removing from node list */
1376 ndlp = lpfc_enable_node(vport, ndlp, NLP_STE_UNUSED_NODE);
1381 if (lpfc_issue_els_fdisc(vport, ndlp, 0)) {
1382 /* decrement node reference count to trigger the release of
1392 * lpfc_more_plogi - Check and issue remaining plogis for a vport
1393 * @vport: pointer to a host virtual N_Port data structure.
1395 * This routine checks whether there are more remaining Port Logins
1396 * (PLOGI) to be issued for the @vport. If so, it will invoke the routine
1397 * lpfc_els_disc_plogi() to go through the Node Port Recovery (NPR) nodes
1398 * to issue ELS PLOGIs up to the configured discover threads with the
1399 * @vport (@vport->cfg_discovery_threads). The function also decrement
1400 * the @vport's num_disc_node by 1 if it is not already 0.
1403 lpfc_more_plogi(struct lpfc_vport *vport)
1407 if (vport->num_disc_nodes)
1408 vport->num_disc_nodes--;
1410 /* Continue discovery with <num_disc_nodes> PLOGIs to go */
1411 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
1412 "0232 Continue discovery with %d PLOGIs to go "
1413 "Data: x%x x%x x%x\n",
1414 vport->num_disc_nodes, vport->fc_plogi_cnt,
1415 vport->fc_flag, vport->port_state);
1416 /* Check to see if there are more PLOGIs to be sent */
1417 if (vport->fc_flag & FC_NLP_MORE)
1418 /* go thru NPR nodes and issue any remaining ELS PLOGIs */
1419 sentplogi = lpfc_els_disc_plogi(vport);
1425 * lpfc_plogi_confirm_nport - Confirm pologi wwpn matches stored ndlp
1426 * @phba: pointer to lpfc hba data structure.
1427 * @prsp: pointer to response IOCB payload.
1428 * @ndlp: pointer to a node-list data structure.
1430 * This routine checks and indicates whether the WWPN of an N_Port, retrieved
1431 * from a PLOGI, matches the WWPN that is stored in the @ndlp for that N_POrt.
1432 * The following cases are considered N_Port confirmed:
1433 * 1) The N_Port is a Fabric ndlp; 2) The @ndlp is on vport list and matches
1434 * the WWPN of the N_Port logged into; 3) The @ndlp is not on vport list but
1435 * it does not have WWPN assigned either. If the WWPN is confirmed, the
1436 * pointer to the @ndlp will be returned. If the WWPN is not confirmed:
1437 * 1) if there is a node on vport list other than the @ndlp with the same
1438 * WWPN of the N_Port PLOGI logged into, the lpfc_unreg_rpi() will be invoked
1439 * on that node to release the RPI associated with the node; 2) if there is
1440 * no node found on vport list with the same WWPN of the N_Port PLOGI logged
1441 * into, a new node shall be allocated (or activated). In either case, the
1442 * parameters of the @ndlp shall be copied to the new_ndlp, the @ndlp shall
1443 * be released and the new_ndlp shall be put on to the vport node list and
1444 * its pointer returned as the confirmed node.
1446 * Note that before the @ndlp got "released", the keepDID from not-matching
1447 * or inactive "new_ndlp" on the vport node list is assigned to the nlp_DID
1448 * of the @ndlp. This is because the release of @ndlp is actually to put it
1449 * into an inactive state on the vport node list and the vport node list
1450 * management algorithm does not allow two node with a same DID.
1453 * pointer to the PLOGI N_Port @ndlp
1455 static struct lpfc_nodelist *
1456 lpfc_plogi_confirm_nport(struct lpfc_hba *phba, uint32_t *prsp,
1457 struct lpfc_nodelist *ndlp)
1459 struct lpfc_vport *vport = ndlp->vport;
1460 struct lpfc_nodelist *new_ndlp;
1461 struct lpfc_rport_data *rdata;
1462 struct fc_rport *rport;
1463 struct serv_parm *sp;
1464 uint8_t name[sizeof(struct lpfc_name)];
1465 uint32_t rc, keepDID = 0;
1468 struct lpfc_node_rrqs rrq;
1470 /* Fabric nodes can have the same WWPN so we don't bother searching
1471 * by WWPN. Just return the ndlp that was given to us.
1473 if (ndlp->nlp_type & NLP_FABRIC)
1476 sp = (struct serv_parm *) ((uint8_t *) prsp + sizeof(uint32_t));
1477 memset(name, 0, sizeof(struct lpfc_name));
1479 /* Now we find out if the NPort we are logging into, matches the WWPN
1480 * we have for that ndlp. If not, we have some work to do.
1482 new_ndlp = lpfc_findnode_wwpn(vport, &sp->portName);
1484 if (new_ndlp == ndlp && NLP_CHK_NODE_ACT(new_ndlp))
1486 memset(&rrq.xri_bitmap, 0, sizeof(new_ndlp->active_rrqs.xri_bitmap));
1488 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
1489 "3178 PLOGI confirm: ndlp %p x%x: new_ndlp %p\n",
1490 ndlp, ndlp->nlp_DID, new_ndlp);
1493 rc = memcmp(&ndlp->nlp_portname, name,
1494 sizeof(struct lpfc_name));
1497 new_ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_ATOMIC);
1500 lpfc_nlp_init(vport, new_ndlp, ndlp->nlp_DID);
1501 } else if (!NLP_CHK_NODE_ACT(new_ndlp)) {
1502 rc = memcmp(&ndlp->nlp_portname, name,
1503 sizeof(struct lpfc_name));
1506 new_ndlp = lpfc_enable_node(vport, new_ndlp,
1507 NLP_STE_UNUSED_NODE);
1510 keepDID = new_ndlp->nlp_DID;
1511 if (phba->sli_rev == LPFC_SLI_REV4)
1512 memcpy(&rrq.xri_bitmap,
1513 &new_ndlp->active_rrqs.xri_bitmap,
1514 sizeof(new_ndlp->active_rrqs.xri_bitmap));
1516 keepDID = new_ndlp->nlp_DID;
1517 if (phba->sli_rev == LPFC_SLI_REV4)
1518 memcpy(&rrq.xri_bitmap,
1519 &new_ndlp->active_rrqs.xri_bitmap,
1520 sizeof(new_ndlp->active_rrqs.xri_bitmap));
1523 lpfc_unreg_rpi(vport, new_ndlp);
1524 new_ndlp->nlp_DID = ndlp->nlp_DID;
1525 new_ndlp->nlp_prev_state = ndlp->nlp_prev_state;
1526 if (phba->sli_rev == LPFC_SLI_REV4)
1527 memcpy(new_ndlp->active_rrqs.xri_bitmap,
1528 &ndlp->active_rrqs.xri_bitmap,
1529 sizeof(ndlp->active_rrqs.xri_bitmap));
1531 if (ndlp->nlp_flag & NLP_NPR_2B_DISC)
1532 new_ndlp->nlp_flag |= NLP_NPR_2B_DISC;
1533 ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
1535 /* Set state will put new_ndlp on to node list if not already done */
1536 lpfc_nlp_set_state(vport, new_ndlp, ndlp->nlp_state);
1538 /* Move this back to NPR state */
1539 if (memcmp(&ndlp->nlp_portname, name, sizeof(struct lpfc_name)) == 0) {
1540 /* The new_ndlp is replacing ndlp totally, so we need
1541 * to put ndlp on UNUSED list and try to free it.
1543 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
1544 "3179 PLOGI confirm NEW: %x %x\n",
1545 new_ndlp->nlp_DID, keepDID);
1547 /* Fix up the rport accordingly */
1548 rport = ndlp->rport;
1550 rdata = rport->dd_data;
1551 if (rdata->pnode == ndlp) {
1554 rdata->pnode = lpfc_nlp_get(new_ndlp);
1555 new_ndlp->rport = rport;
1557 new_ndlp->nlp_type = ndlp->nlp_type;
1559 /* We shall actually free the ndlp with both nlp_DID and
1560 * nlp_portname fields equals 0 to avoid any ndlp on the
1561 * nodelist never to be used.
1563 if (ndlp->nlp_DID == 0) {
1564 spin_lock_irq(&phba->ndlp_lock);
1565 NLP_SET_FREE_REQ(ndlp);
1566 spin_unlock_irq(&phba->ndlp_lock);
1569 /* Two ndlps cannot have the same did on the nodelist */
1570 ndlp->nlp_DID = keepDID;
1571 if (phba->sli_rev == LPFC_SLI_REV4)
1572 memcpy(&ndlp->active_rrqs.xri_bitmap,
1574 sizeof(ndlp->active_rrqs.xri_bitmap));
1575 lpfc_drop_node(vport, ndlp);
1578 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
1579 "3180 PLOGI confirm SWAP: %x %x\n",
1580 new_ndlp->nlp_DID, keepDID);
1582 lpfc_unreg_rpi(vport, ndlp);
1584 /* Two ndlps cannot have the same did */
1585 ndlp->nlp_DID = keepDID;
1586 if (phba->sli_rev == LPFC_SLI_REV4)
1587 memcpy(&ndlp->active_rrqs.xri_bitmap,
1589 sizeof(ndlp->active_rrqs.xri_bitmap));
1591 /* Since we are swapping the ndlp passed in with the new one
1592 * and the did has already been swapped, copy over state.
1593 * The new WWNs are already in new_ndlp since thats what
1594 * we looked it up by in the begining of this routine.
1596 new_ndlp->nlp_state = ndlp->nlp_state;
1598 /* Since we are switching over to the new_ndlp, the old
1599 * ndlp should be put in the NPR state, unless we have
1600 * already started re-discovery on it.
1602 if ((ndlp->nlp_state == NLP_STE_UNMAPPED_NODE) ||
1603 (ndlp->nlp_state == NLP_STE_MAPPED_NODE))
1604 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1606 /* Fix up the rport accordingly */
1607 rport = ndlp->rport;
1609 rdata = rport->dd_data;
1610 put_node = rdata->pnode != NULL;
1611 put_rport = ndlp->rport != NULL;
1612 rdata->pnode = NULL;
1617 put_device(&rport->dev);
1624 * lpfc_end_rscn - Check and handle more rscn for a vport
1625 * @vport: pointer to a host virtual N_Port data structure.
1627 * This routine checks whether more Registration State Change
1628 * Notifications (RSCNs) came in while the discovery state machine was in
1629 * the FC_RSCN_MODE. If so, the lpfc_els_handle_rscn() routine will be
1630 * invoked to handle the additional RSCNs for the @vport. Otherwise, the
1631 * FC_RSCN_MODE bit will be cleared with the @vport to mark as the end of
1632 * handling the RSCNs.
1635 lpfc_end_rscn(struct lpfc_vport *vport)
1637 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1639 if (vport->fc_flag & FC_RSCN_MODE) {
1641 * Check to see if more RSCNs came in while we were
1642 * processing this one.
1644 if (vport->fc_rscn_id_cnt ||
1645 (vport->fc_flag & FC_RSCN_DISCOVERY) != 0)
1646 lpfc_els_handle_rscn(vport);
1648 spin_lock_irq(shost->host_lock);
1649 vport->fc_flag &= ~FC_RSCN_MODE;
1650 spin_unlock_irq(shost->host_lock);
1656 * lpfc_cmpl_els_rrq - Completion handled for els RRQs.
1657 * @phba: pointer to lpfc hba data structure.
1658 * @cmdiocb: pointer to lpfc command iocb data structure.
1659 * @rspiocb: pointer to lpfc response iocb data structure.
1661 * This routine will call the clear rrq function to free the rrq and
1662 * clear the xri's bit in the ndlp's xri_bitmap. If the ndlp does not
1663 * exist then the clear_rrq is still called because the rrq needs to
1668 lpfc_cmpl_els_rrq(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
1669 struct lpfc_iocbq *rspiocb)
1671 struct lpfc_vport *vport = cmdiocb->vport;
1673 struct lpfc_nodelist *ndlp;
1674 struct lpfc_node_rrq *rrq;
1676 /* we pass cmdiocb to state machine which needs rspiocb as well */
1677 rrq = cmdiocb->context_un.rrq;
1678 cmdiocb->context_un.rsp_iocb = rspiocb;
1680 irsp = &rspiocb->iocb;
1681 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
1682 "RRQ cmpl: status:x%x/x%x did:x%x",
1683 irsp->ulpStatus, irsp->un.ulpWord[4],
1684 irsp->un.elsreq64.remoteID);
1686 ndlp = lpfc_findnode_did(vport, irsp->un.elsreq64.remoteID);
1687 if (!ndlp || !NLP_CHK_NODE_ACT(ndlp) || ndlp != rrq->ndlp) {
1688 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1689 "2882 RRQ completes to NPort x%x "
1690 "with no ndlp. Data: x%x x%x x%x\n",
1691 irsp->un.elsreq64.remoteID,
1692 irsp->ulpStatus, irsp->un.ulpWord[4],
1697 /* rrq completes to NPort <nlp_DID> */
1698 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
1699 "2880 RRQ completes to NPort x%x "
1700 "Data: x%x x%x x%x x%x x%x\n",
1701 ndlp->nlp_DID, irsp->ulpStatus, irsp->un.ulpWord[4],
1702 irsp->ulpTimeout, rrq->xritag, rrq->rxid);
1704 if (irsp->ulpStatus) {
1705 /* Check for retry */
1706 /* RRQ failed Don't print the vport to vport rjts */
1707 if (irsp->ulpStatus != IOSTAT_LS_RJT ||
1708 (((irsp->un.ulpWord[4]) >> 16 != LSRJT_INVALID_CMD) &&
1709 ((irsp->un.ulpWord[4]) >> 16 != LSRJT_UNABLE_TPC)) ||
1710 (phba)->pport->cfg_log_verbose & LOG_ELS)
1711 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1712 "2881 RRQ failure DID:%06X Status:x%x/x%x\n",
1713 ndlp->nlp_DID, irsp->ulpStatus,
1714 irsp->un.ulpWord[4]);
1718 lpfc_clr_rrq_active(phba, rrq->xritag, rrq);
1719 lpfc_els_free_iocb(phba, cmdiocb);
1723 * lpfc_cmpl_els_plogi - Completion callback function for plogi
1724 * @phba: pointer to lpfc hba data structure.
1725 * @cmdiocb: pointer to lpfc command iocb data structure.
1726 * @rspiocb: pointer to lpfc response iocb data structure.
1728 * This routine is the completion callback function for issuing the Port
1729 * Login (PLOGI) command. For PLOGI completion, there must be an active
1730 * ndlp on the vport node list that matches the remote node ID from the
1731 * PLOGI response IOCB. If such ndlp does not exist, the PLOGI is simply
1732 * ignored and command IOCB released. The PLOGI response IOCB status is
1733 * checked for error conditons. If there is error status reported, PLOGI
1734 * retry shall be attempted by invoking the lpfc_els_retry() routine.
1735 * Otherwise, the lpfc_plogi_confirm_nport() routine shall be invoked on
1736 * the ndlp and the NLP_EVT_CMPL_PLOGI state to the Discover State Machine
1737 * (DSM) is set for this PLOGI completion. Finally, it checks whether
1738 * there are additional N_Port nodes with the vport that need to perform
1739 * PLOGI. If so, the lpfc_more_plogi() routine is invoked to issue addition
1743 lpfc_cmpl_els_plogi(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
1744 struct lpfc_iocbq *rspiocb)
1746 struct lpfc_vport *vport = cmdiocb->vport;
1747 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1749 struct lpfc_nodelist *ndlp;
1750 struct lpfc_dmabuf *prsp;
1751 int disc, rc, did, type;
1753 /* we pass cmdiocb to state machine which needs rspiocb as well */
1754 cmdiocb->context_un.rsp_iocb = rspiocb;
1756 irsp = &rspiocb->iocb;
1757 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
1758 "PLOGI cmpl: status:x%x/x%x did:x%x",
1759 irsp->ulpStatus, irsp->un.ulpWord[4],
1760 irsp->un.elsreq64.remoteID);
1762 ndlp = lpfc_findnode_did(vport, irsp->un.elsreq64.remoteID);
1763 if (!ndlp || !NLP_CHK_NODE_ACT(ndlp)) {
1764 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1765 "0136 PLOGI completes to NPort x%x "
1766 "with no ndlp. Data: x%x x%x x%x\n",
1767 irsp->un.elsreq64.remoteID,
1768 irsp->ulpStatus, irsp->un.ulpWord[4],
1773 /* Since ndlp can be freed in the disc state machine, note if this node
1774 * is being used during discovery.
1776 spin_lock_irq(shost->host_lock);
1777 disc = (ndlp->nlp_flag & NLP_NPR_2B_DISC);
1778 ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
1779 spin_unlock_irq(shost->host_lock);
1782 /* PLOGI completes to NPort <nlp_DID> */
1783 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
1784 "0102 PLOGI completes to NPort x%x "
1785 "Data: x%x x%x x%x x%x x%x\n",
1786 ndlp->nlp_DID, irsp->ulpStatus, irsp->un.ulpWord[4],
1787 irsp->ulpTimeout, disc, vport->num_disc_nodes);
1788 /* Check to see if link went down during discovery */
1789 if (lpfc_els_chk_latt(vport)) {
1790 spin_lock_irq(shost->host_lock);
1791 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
1792 spin_unlock_irq(shost->host_lock);
1796 /* ndlp could be freed in DSM, save these values now */
1797 type = ndlp->nlp_type;
1798 did = ndlp->nlp_DID;
1800 if (irsp->ulpStatus) {
1801 /* Check for retry */
1802 if (lpfc_els_retry(phba, cmdiocb, rspiocb)) {
1803 /* ELS command is being retried */
1805 spin_lock_irq(shost->host_lock);
1806 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
1807 spin_unlock_irq(shost->host_lock);
1811 /* PLOGI failed Don't print the vport to vport rjts */
1812 if (irsp->ulpStatus != IOSTAT_LS_RJT ||
1813 (((irsp->un.ulpWord[4]) >> 16 != LSRJT_INVALID_CMD) &&
1814 ((irsp->un.ulpWord[4]) >> 16 != LSRJT_UNABLE_TPC)) ||
1815 (phba)->pport->cfg_log_verbose & LOG_ELS)
1816 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1817 "2753 PLOGI failure DID:%06X Status:x%x/x%x\n",
1818 ndlp->nlp_DID, irsp->ulpStatus,
1819 irsp->un.ulpWord[4]);
1820 /* Do not call DSM for lpfc_els_abort'ed ELS cmds */
1821 if (lpfc_error_lost_link(irsp))
1822 rc = NLP_STE_FREED_NODE;
1824 rc = lpfc_disc_state_machine(vport, ndlp, cmdiocb,
1825 NLP_EVT_CMPL_PLOGI);
1827 /* Good status, call state machine */
1828 prsp = list_entry(((struct lpfc_dmabuf *)
1829 cmdiocb->context2)->list.next,
1830 struct lpfc_dmabuf, list);
1831 ndlp = lpfc_plogi_confirm_nport(phba, prsp->virt, ndlp);
1832 rc = lpfc_disc_state_machine(vport, ndlp, cmdiocb,
1833 NLP_EVT_CMPL_PLOGI);
1836 if (disc && vport->num_disc_nodes) {
1837 /* Check to see if there are more PLOGIs to be sent */
1838 lpfc_more_plogi(vport);
1840 if (vport->num_disc_nodes == 0) {
1841 spin_lock_irq(shost->host_lock);
1842 vport->fc_flag &= ~FC_NDISC_ACTIVE;
1843 spin_unlock_irq(shost->host_lock);
1845 lpfc_can_disctmo(vport);
1846 lpfc_end_rscn(vport);
1851 lpfc_els_free_iocb(phba, cmdiocb);
1856 * lpfc_issue_els_plogi - Issue an plogi iocb command for a vport
1857 * @vport: pointer to a host virtual N_Port data structure.
1858 * @did: destination port identifier.
1859 * @retry: number of retries to the command IOCB.
1861 * This routine issues a Port Login (PLOGI) command to a remote N_Port
1862 * (with the @did) for a @vport. Before issuing a PLOGI to a remote N_Port,
1863 * the ndlp with the remote N_Port DID must exist on the @vport's ndlp list.
1864 * This routine constructs the proper feilds of the PLOGI IOCB and invokes
1865 * the lpfc_sli_issue_iocb() routine to send out PLOGI ELS command.
1867 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
1868 * will be incremented by 1 for holding the ndlp and the reference to ndlp
1869 * will be stored into the context1 field of the IOCB for the completion
1870 * callback function to the PLOGI ELS command.
1873 * 0 - Successfully issued a plogi for @vport
1874 * 1 - failed to issue a plogi for @vport
1877 lpfc_issue_els_plogi(struct lpfc_vport *vport, uint32_t did, uint8_t retry)
1879 struct lpfc_hba *phba = vport->phba;
1880 struct serv_parm *sp;
1882 struct lpfc_nodelist *ndlp;
1883 struct lpfc_iocbq *elsiocb;
1884 struct lpfc_sli *psli;
1891 ndlp = lpfc_findnode_did(vport, did);
1892 if (ndlp && !NLP_CHK_NODE_ACT(ndlp))
1895 /* If ndlp is not NULL, we will bump the reference count on it */
1896 cmdsize = (sizeof(uint32_t) + sizeof(struct serv_parm));
1897 elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp, did,
1902 icmd = &elsiocb->iocb;
1903 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
1905 /* For PLOGI request, remainder of payload is service parameters */
1906 *((uint32_t *) (pcmd)) = ELS_CMD_PLOGI;
1907 pcmd += sizeof(uint32_t);
1908 memcpy(pcmd, &vport->fc_sparam, sizeof(struct serv_parm));
1909 sp = (struct serv_parm *) pcmd;
1912 * If we are a N-port connected to a Fabric, fix-up paramm's so logins
1913 * to device on remote loops work.
1915 if ((vport->fc_flag & FC_FABRIC) && !(vport->fc_flag & FC_PUBLIC_LOOP))
1916 sp->cmn.altBbCredit = 1;
1918 if (sp->cmn.fcphLow < FC_PH_4_3)
1919 sp->cmn.fcphLow = FC_PH_4_3;
1921 if (sp->cmn.fcphHigh < FC_PH3)
1922 sp->cmn.fcphHigh = FC_PH3;
1924 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
1925 "Issue PLOGI: did:x%x",
1928 phba->fc_stat.elsXmitPLOGI++;
1929 elsiocb->iocb_cmpl = lpfc_cmpl_els_plogi;
1930 ret = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
1932 if (ret == IOCB_ERROR) {
1933 lpfc_els_free_iocb(phba, elsiocb);
1940 * lpfc_cmpl_els_prli - Completion callback function for prli
1941 * @phba: pointer to lpfc hba data structure.
1942 * @cmdiocb: pointer to lpfc command iocb data structure.
1943 * @rspiocb: pointer to lpfc response iocb data structure.
1945 * This routine is the completion callback function for a Process Login
1946 * (PRLI) ELS command. The PRLI response IOCB status is checked for error
1947 * status. If there is error status reported, PRLI retry shall be attempted
1948 * by invoking the lpfc_els_retry() routine. Otherwise, the state
1949 * NLP_EVT_CMPL_PRLI is sent to the Discover State Machine (DSM) for this
1950 * ndlp to mark the PRLI completion.
1953 lpfc_cmpl_els_prli(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
1954 struct lpfc_iocbq *rspiocb)
1956 struct lpfc_vport *vport = cmdiocb->vport;
1957 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1959 struct lpfc_sli *psli;
1960 struct lpfc_nodelist *ndlp;
1963 /* we pass cmdiocb to state machine which needs rspiocb as well */
1964 cmdiocb->context_un.rsp_iocb = rspiocb;
1966 irsp = &(rspiocb->iocb);
1967 ndlp = (struct lpfc_nodelist *) cmdiocb->context1;
1968 spin_lock_irq(shost->host_lock);
1969 ndlp->nlp_flag &= ~NLP_PRLI_SND;
1970 spin_unlock_irq(shost->host_lock);
1972 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
1973 "PRLI cmpl: status:x%x/x%x did:x%x",
1974 irsp->ulpStatus, irsp->un.ulpWord[4],
1976 /* PRLI completes to NPort <nlp_DID> */
1977 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
1978 "0103 PRLI completes to NPort x%x "
1979 "Data: x%x x%x x%x x%x\n",
1980 ndlp->nlp_DID, irsp->ulpStatus, irsp->un.ulpWord[4],
1981 irsp->ulpTimeout, vport->num_disc_nodes);
1983 vport->fc_prli_sent--;
1984 /* Check to see if link went down during discovery */
1985 if (lpfc_els_chk_latt(vport))
1988 if (irsp->ulpStatus) {
1989 /* Check for retry */
1990 if (lpfc_els_retry(phba, cmdiocb, rspiocb)) {
1991 /* ELS command is being retried */
1995 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1996 "2754 PRLI failure DID:%06X Status:x%x/x%x\n",
1997 ndlp->nlp_DID, irsp->ulpStatus,
1998 irsp->un.ulpWord[4]);
1999 /* Do not call DSM for lpfc_els_abort'ed ELS cmds */
2000 if (lpfc_error_lost_link(irsp))
2003 lpfc_disc_state_machine(vport, ndlp, cmdiocb,
2006 /* Good status, call state machine */
2007 lpfc_disc_state_machine(vport, ndlp, cmdiocb,
2010 lpfc_els_free_iocb(phba, cmdiocb);
2015 * lpfc_issue_els_prli - Issue a prli iocb command for a vport
2016 * @vport: pointer to a host virtual N_Port data structure.
2017 * @ndlp: pointer to a node-list data structure.
2018 * @retry: number of retries to the command IOCB.
2020 * This routine issues a Process Login (PRLI) ELS command for the
2021 * @vport. The PRLI service parameters are set up in the payload of the
2022 * PRLI Request command and the pointer to lpfc_cmpl_els_prli() routine
2023 * is put to the IOCB completion callback func field before invoking the
2024 * routine lpfc_sli_issue_iocb() to send out PRLI command.
2026 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
2027 * will be incremented by 1 for holding the ndlp and the reference to ndlp
2028 * will be stored into the context1 field of the IOCB for the completion
2029 * callback function to the PRLI ELS command.
2032 * 0 - successfully issued prli iocb command for @vport
2033 * 1 - failed to issue prli iocb command for @vport
2036 lpfc_issue_els_prli(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2039 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2040 struct lpfc_hba *phba = vport->phba;
2043 struct lpfc_iocbq *elsiocb;
2047 cmdsize = (sizeof(uint32_t) + sizeof(PRLI));
2048 elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp,
2049 ndlp->nlp_DID, ELS_CMD_PRLI);
2053 icmd = &elsiocb->iocb;
2054 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
2056 /* For PRLI request, remainder of payload is service parameters */
2057 memset(pcmd, 0, (sizeof(PRLI) + sizeof(uint32_t)));
2058 *((uint32_t *) (pcmd)) = ELS_CMD_PRLI;
2059 pcmd += sizeof(uint32_t);
2061 /* For PRLI, remainder of payload is PRLI parameter page */
2062 npr = (PRLI *) pcmd;
2064 * If our firmware version is 3.20 or later,
2065 * set the following bits for FC-TAPE support.
2067 if (phba->vpd.rev.feaLevelHigh >= 0x02) {
2068 npr->ConfmComplAllowed = 1;
2070 npr->TaskRetryIdReq = 1;
2072 npr->estabImagePair = 1;
2073 npr->readXferRdyDis = 1;
2075 /* For FCP support */
2076 npr->prliType = PRLI_FCP_TYPE;
2077 npr->initiatorFunc = 1;
2079 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
2080 "Issue PRLI: did:x%x",
2081 ndlp->nlp_DID, 0, 0);
2083 phba->fc_stat.elsXmitPRLI++;
2084 elsiocb->iocb_cmpl = lpfc_cmpl_els_prli;
2085 spin_lock_irq(shost->host_lock);
2086 ndlp->nlp_flag |= NLP_PRLI_SND;
2087 spin_unlock_irq(shost->host_lock);
2088 if (lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0) ==
2090 spin_lock_irq(shost->host_lock);
2091 ndlp->nlp_flag &= ~NLP_PRLI_SND;
2092 spin_unlock_irq(shost->host_lock);
2093 lpfc_els_free_iocb(phba, elsiocb);
2096 vport->fc_prli_sent++;
2101 * lpfc_rscn_disc - Perform rscn discovery for a vport
2102 * @vport: pointer to a host virtual N_Port data structure.
2104 * This routine performs Registration State Change Notification (RSCN)
2105 * discovery for a @vport. If the @vport's node port recovery count is not
2106 * zero, it will invoke the lpfc_els_disc_plogi() to perform PLOGI for all
2107 * the nodes that need recovery. If none of the PLOGI were needed through
2108 * the lpfc_els_disc_plogi() routine, the lpfc_end_rscn() routine shall be
2109 * invoked to check and handle possible more RSCN came in during the period
2110 * of processing the current ones.
2113 lpfc_rscn_disc(struct lpfc_vport *vport)
2115 lpfc_can_disctmo(vport);
2117 /* RSCN discovery */
2118 /* go thru NPR nodes and issue ELS PLOGIs */
2119 if (vport->fc_npr_cnt)
2120 if (lpfc_els_disc_plogi(vport))
2123 lpfc_end_rscn(vport);
2127 * lpfc_adisc_done - Complete the adisc phase of discovery
2128 * @vport: pointer to lpfc_vport hba data structure that finished all ADISCs.
2130 * This function is called when the final ADISC is completed during discovery.
2131 * This function handles clearing link attention or issuing reg_vpi depending
2132 * on whether npiv is enabled. This function also kicks off the PLOGI phase of
2134 * This function is called with no locks held.
2137 lpfc_adisc_done(struct lpfc_vport *vport)
2139 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2140 struct lpfc_hba *phba = vport->phba;
2143 * For NPIV, cmpl_reg_vpi will set port_state to READY,
2144 * and continue discovery.
2146 if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
2147 !(vport->fc_flag & FC_RSCN_MODE) &&
2148 (phba->sli_rev < LPFC_SLI_REV4)) {
2149 lpfc_issue_reg_vpi(phba, vport);
2153 * For SLI2, we need to set port_state to READY
2154 * and continue discovery.
2156 if (vport->port_state < LPFC_VPORT_READY) {
2157 /* If we get here, there is nothing to ADISC */
2158 if (vport->port_type == LPFC_PHYSICAL_PORT)
2159 lpfc_issue_clear_la(phba, vport);
2160 if (!(vport->fc_flag & FC_ABORT_DISCOVERY)) {
2161 vport->num_disc_nodes = 0;
2162 /* go thru NPR list, issue ELS PLOGIs */
2163 if (vport->fc_npr_cnt)
2164 lpfc_els_disc_plogi(vport);
2165 if (!vport->num_disc_nodes) {
2166 spin_lock_irq(shost->host_lock);
2167 vport->fc_flag &= ~FC_NDISC_ACTIVE;
2168 spin_unlock_irq(shost->host_lock);
2169 lpfc_can_disctmo(vport);
2170 lpfc_end_rscn(vport);
2173 vport->port_state = LPFC_VPORT_READY;
2175 lpfc_rscn_disc(vport);
2179 * lpfc_more_adisc - Issue more adisc as needed
2180 * @vport: pointer to a host virtual N_Port data structure.
2182 * This routine determines whether there are more ndlps on a @vport
2183 * node list need to have Address Discover (ADISC) issued. If so, it will
2184 * invoke the lpfc_els_disc_adisc() routine to issue ADISC on the @vport's
2185 * remaining nodes which need to have ADISC sent.
2188 lpfc_more_adisc(struct lpfc_vport *vport)
2192 if (vport->num_disc_nodes)
2193 vport->num_disc_nodes--;
2194 /* Continue discovery with <num_disc_nodes> ADISCs to go */
2195 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2196 "0210 Continue discovery with %d ADISCs to go "
2197 "Data: x%x x%x x%x\n",
2198 vport->num_disc_nodes, vport->fc_adisc_cnt,
2199 vport->fc_flag, vport->port_state);
2200 /* Check to see if there are more ADISCs to be sent */
2201 if (vport->fc_flag & FC_NLP_MORE) {
2202 lpfc_set_disctmo(vport);
2203 /* go thru NPR nodes and issue any remaining ELS ADISCs */
2204 sentadisc = lpfc_els_disc_adisc(vport);
2206 if (!vport->num_disc_nodes)
2207 lpfc_adisc_done(vport);
2212 * lpfc_cmpl_els_adisc - Completion callback function for adisc
2213 * @phba: pointer to lpfc hba data structure.
2214 * @cmdiocb: pointer to lpfc command iocb data structure.
2215 * @rspiocb: pointer to lpfc response iocb data structure.
2217 * This routine is the completion function for issuing the Address Discover
2218 * (ADISC) command. It first checks to see whether link went down during
2219 * the discovery process. If so, the node will be marked as node port
2220 * recovery for issuing discover IOCB by the link attention handler and
2221 * exit. Otherwise, the response status is checked. If error was reported
2222 * in the response status, the ADISC command shall be retried by invoking
2223 * the lpfc_els_retry() routine. Otherwise, if no error was reported in
2224 * the response status, the state machine is invoked to set transition
2225 * with respect to NLP_EVT_CMPL_ADISC event.
2228 lpfc_cmpl_els_adisc(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
2229 struct lpfc_iocbq *rspiocb)
2231 struct lpfc_vport *vport = cmdiocb->vport;
2232 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2234 struct lpfc_nodelist *ndlp;
2237 /* we pass cmdiocb to state machine which needs rspiocb as well */
2238 cmdiocb->context_un.rsp_iocb = rspiocb;
2240 irsp = &(rspiocb->iocb);
2241 ndlp = (struct lpfc_nodelist *) cmdiocb->context1;
2243 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
2244 "ADISC cmpl: status:x%x/x%x did:x%x",
2245 irsp->ulpStatus, irsp->un.ulpWord[4],
2248 /* Since ndlp can be freed in the disc state machine, note if this node
2249 * is being used during discovery.
2251 spin_lock_irq(shost->host_lock);
2252 disc = (ndlp->nlp_flag & NLP_NPR_2B_DISC);
2253 ndlp->nlp_flag &= ~(NLP_ADISC_SND | NLP_NPR_2B_DISC);
2254 spin_unlock_irq(shost->host_lock);
2255 /* ADISC completes to NPort <nlp_DID> */
2256 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
2257 "0104 ADISC completes to NPort x%x "
2258 "Data: x%x x%x x%x x%x x%x\n",
2259 ndlp->nlp_DID, irsp->ulpStatus, irsp->un.ulpWord[4],
2260 irsp->ulpTimeout, disc, vport->num_disc_nodes);
2261 /* Check to see if link went down during discovery */
2262 if (lpfc_els_chk_latt(vport)) {
2263 spin_lock_irq(shost->host_lock);
2264 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
2265 spin_unlock_irq(shost->host_lock);
2269 if (irsp->ulpStatus) {
2270 /* Check for retry */
2271 if (lpfc_els_retry(phba, cmdiocb, rspiocb)) {
2272 /* ELS command is being retried */
2274 spin_lock_irq(shost->host_lock);
2275 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
2276 spin_unlock_irq(shost->host_lock);
2277 lpfc_set_disctmo(vport);
2282 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
2283 "2755 ADISC failure DID:%06X Status:x%x/x%x\n",
2284 ndlp->nlp_DID, irsp->ulpStatus,
2285 irsp->un.ulpWord[4]);
2286 /* Do not call DSM for lpfc_els_abort'ed ELS cmds */
2287 if (!lpfc_error_lost_link(irsp))
2288 lpfc_disc_state_machine(vport, ndlp, cmdiocb,
2289 NLP_EVT_CMPL_ADISC);
2291 /* Good status, call state machine */
2292 lpfc_disc_state_machine(vport, ndlp, cmdiocb,
2293 NLP_EVT_CMPL_ADISC);
2295 /* Check to see if there are more ADISCs to be sent */
2296 if (disc && vport->num_disc_nodes)
2297 lpfc_more_adisc(vport);
2299 lpfc_els_free_iocb(phba, cmdiocb);
2304 * lpfc_issue_els_adisc - Issue an address discover iocb to an node on a vport
2305 * @vport: pointer to a virtual N_Port data structure.
2306 * @ndlp: pointer to a node-list data structure.
2307 * @retry: number of retries to the command IOCB.
2309 * This routine issues an Address Discover (ADISC) for an @ndlp on a
2310 * @vport. It prepares the payload of the ADISC ELS command, updates the
2311 * and states of the ndlp, and invokes the lpfc_sli_issue_iocb() routine
2312 * to issue the ADISC ELS command.
2314 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
2315 * will be incremented by 1 for holding the ndlp and the reference to ndlp
2316 * will be stored into the context1 field of the IOCB for the completion
2317 * callback function to the ADISC ELS command.
2320 * 0 - successfully issued adisc
2321 * 1 - failed to issue adisc
2324 lpfc_issue_els_adisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2327 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2328 struct lpfc_hba *phba = vport->phba;
2331 struct lpfc_iocbq *elsiocb;
2335 cmdsize = (sizeof(uint32_t) + sizeof(ADISC));
2336 elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp,
2337 ndlp->nlp_DID, ELS_CMD_ADISC);
2341 icmd = &elsiocb->iocb;
2342 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
2344 /* For ADISC request, remainder of payload is service parameters */
2345 *((uint32_t *) (pcmd)) = ELS_CMD_ADISC;
2346 pcmd += sizeof(uint32_t);
2348 /* Fill in ADISC payload */
2349 ap = (ADISC *) pcmd;
2350 ap->hardAL_PA = phba->fc_pref_ALPA;
2351 memcpy(&ap->portName, &vport->fc_portname, sizeof(struct lpfc_name));
2352 memcpy(&ap->nodeName, &vport->fc_nodename, sizeof(struct lpfc_name));
2353 ap->DID = be32_to_cpu(vport->fc_myDID);
2355 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
2356 "Issue ADISC: did:x%x",
2357 ndlp->nlp_DID, 0, 0);
2359 phba->fc_stat.elsXmitADISC++;
2360 elsiocb->iocb_cmpl = lpfc_cmpl_els_adisc;
2361 spin_lock_irq(shost->host_lock);
2362 ndlp->nlp_flag |= NLP_ADISC_SND;
2363 spin_unlock_irq(shost->host_lock);
2364 if (lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0) ==
2366 spin_lock_irq(shost->host_lock);
2367 ndlp->nlp_flag &= ~NLP_ADISC_SND;
2368 spin_unlock_irq(shost->host_lock);
2369 lpfc_els_free_iocb(phba, elsiocb);
2376 * lpfc_cmpl_els_logo - Completion callback function for logo
2377 * @phba: pointer to lpfc hba data structure.
2378 * @cmdiocb: pointer to lpfc command iocb data structure.
2379 * @rspiocb: pointer to lpfc response iocb data structure.
2381 * This routine is the completion function for issuing the ELS Logout (LOGO)
2382 * command. If no error status was reported from the LOGO response, the
2383 * state machine of the associated ndlp shall be invoked for transition with
2384 * respect to NLP_EVT_CMPL_LOGO event. Otherwise, if error status was reported,
2385 * the lpfc_els_retry() routine will be invoked to retry the LOGO command.
2388 lpfc_cmpl_els_logo(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
2389 struct lpfc_iocbq *rspiocb)
2391 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) cmdiocb->context1;
2392 struct lpfc_vport *vport = ndlp->vport;
2393 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2395 struct lpfc_sli *psli;
2396 struct lpfcMboxq *mbox;
2397 unsigned long flags;
2398 uint32_t skip_recovery = 0;
2401 /* we pass cmdiocb to state machine which needs rspiocb as well */
2402 cmdiocb->context_un.rsp_iocb = rspiocb;
2404 irsp = &(rspiocb->iocb);
2405 spin_lock_irq(shost->host_lock);
2406 ndlp->nlp_flag &= ~NLP_LOGO_SND;
2407 spin_unlock_irq(shost->host_lock);
2409 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
2410 "LOGO cmpl: status:x%x/x%x did:x%x",
2411 irsp->ulpStatus, irsp->un.ulpWord[4],
2414 /* LOGO completes to NPort <nlp_DID> */
2415 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
2416 "0105 LOGO completes to NPort x%x "
2417 "Data: x%x x%x x%x x%x\n",
2418 ndlp->nlp_DID, irsp->ulpStatus, irsp->un.ulpWord[4],
2419 irsp->ulpTimeout, vport->num_disc_nodes);
2421 if (lpfc_els_chk_latt(vport)) {
2426 /* Check to see if link went down during discovery */
2427 if (ndlp->nlp_flag & NLP_TARGET_REMOVE) {
2428 /* NLP_EVT_DEVICE_RM should unregister the RPI
2429 * which should abort all outstanding IOs.
2431 lpfc_disc_state_machine(vport, ndlp, cmdiocb,
2437 if (irsp->ulpStatus) {
2438 /* Check for retry */
2439 if (lpfc_els_retry(phba, cmdiocb, rspiocb)) {
2440 /* ELS command is being retried */
2445 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
2446 "2756 LOGO failure DID:%06X Status:x%x/x%x\n",
2447 ndlp->nlp_DID, irsp->ulpStatus,
2448 irsp->un.ulpWord[4]);
2449 /* Do not call DSM for lpfc_els_abort'ed ELS cmds */
2450 if (lpfc_error_lost_link(irsp)) {
2456 /* Call state machine. This will unregister the rpi if needed. */
2457 lpfc_disc_state_machine(vport, ndlp, cmdiocb, NLP_EVT_CMPL_LOGO);
2460 lpfc_els_free_iocb(phba, cmdiocb);
2461 /* If we are in pt2pt mode, we could rcv new S_ID on PLOGI */
2462 if ((vport->fc_flag & FC_PT2PT) &&
2463 !(vport->fc_flag & FC_PT2PT_PLOGI)) {
2464 phba->pport->fc_myDID = 0;
2465 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2467 lpfc_config_link(phba, mbox);
2468 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
2469 mbox->vport = vport;
2470 if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT) ==
2472 mempool_free(mbox, phba->mbox_mem_pool);
2479 * If the node is a target, the handling attempts to recover the port.
2480 * For any other port type, the rpi is unregistered as an implicit
2483 if ((ndlp->nlp_type & NLP_FCP_TARGET) && (skip_recovery == 0)) {
2484 lpfc_cancel_retry_delay_tmo(vport, ndlp);
2485 spin_lock_irqsave(shost->host_lock, flags);
2486 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
2487 spin_unlock_irqrestore(shost->host_lock, flags);
2489 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
2490 "3187 LOGO completes to NPort x%x: Start "
2491 "Recovery Data: x%x x%x x%x x%x\n",
2492 ndlp->nlp_DID, irsp->ulpStatus,
2493 irsp->un.ulpWord[4], irsp->ulpTimeout,
2494 vport->num_disc_nodes);
2495 lpfc_disc_start(vport);
2501 * lpfc_issue_els_logo - Issue a logo to an node on a vport
2502 * @vport: pointer to a virtual N_Port data structure.
2503 * @ndlp: pointer to a node-list data structure.
2504 * @retry: number of retries to the command IOCB.
2506 * This routine constructs and issues an ELS Logout (LOGO) iocb command
2507 * to a remote node, referred by an @ndlp on a @vport. It constructs the
2508 * payload of the IOCB, properly sets up the @ndlp state, and invokes the
2509 * lpfc_sli_issue_iocb() routine to send out the LOGO ELS command.
2511 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
2512 * will be incremented by 1 for holding the ndlp and the reference to ndlp
2513 * will be stored into the context1 field of the IOCB for the completion
2514 * callback function to the LOGO ELS command.
2517 * 0 - successfully issued logo
2518 * 1 - failed to issue logo
2521 lpfc_issue_els_logo(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2524 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2525 struct lpfc_hba *phba = vport->phba;
2527 struct lpfc_iocbq *elsiocb;
2532 spin_lock_irq(shost->host_lock);
2533 if (ndlp->nlp_flag & NLP_LOGO_SND) {
2534 spin_unlock_irq(shost->host_lock);
2537 spin_unlock_irq(shost->host_lock);
2539 cmdsize = (2 * sizeof(uint32_t)) + sizeof(struct lpfc_name);
2540 elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp,
2541 ndlp->nlp_DID, ELS_CMD_LOGO);
2545 icmd = &elsiocb->iocb;
2546 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
2547 *((uint32_t *) (pcmd)) = ELS_CMD_LOGO;
2548 pcmd += sizeof(uint32_t);
2550 /* Fill in LOGO payload */
2551 *((uint32_t *) (pcmd)) = be32_to_cpu(vport->fc_myDID);
2552 pcmd += sizeof(uint32_t);
2553 memcpy(pcmd, &vport->fc_portname, sizeof(struct lpfc_name));
2555 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
2556 "Issue LOGO: did:x%x",
2557 ndlp->nlp_DID, 0, 0);
2560 * If we are issuing a LOGO, we may try to recover the remote NPort
2561 * by issuing a PLOGI later. Even though we issue ELS cmds by the
2562 * VPI, if we have a valid RPI, and that RPI gets unreg'ed while
2563 * that ELS command is in-flight, the HBA returns a IOERR_INVALID_RPI
2564 * for that ELS cmd. To avoid this situation, lets get rid of the
2565 * RPI right now, before any ELS cmds are sent.
2567 spin_lock_irq(shost->host_lock);
2568 ndlp->nlp_flag |= NLP_ISSUE_LOGO;
2569 spin_unlock_irq(shost->host_lock);
2570 if (lpfc_unreg_rpi(vport, ndlp)) {
2571 lpfc_els_free_iocb(phba, elsiocb);
2575 phba->fc_stat.elsXmitLOGO++;
2576 elsiocb->iocb_cmpl = lpfc_cmpl_els_logo;
2577 spin_lock_irq(shost->host_lock);
2578 ndlp->nlp_flag |= NLP_LOGO_SND;
2579 ndlp->nlp_flag &= ~NLP_ISSUE_LOGO;
2580 spin_unlock_irq(shost->host_lock);
2581 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
2583 if (rc == IOCB_ERROR) {
2584 spin_lock_irq(shost->host_lock);
2585 ndlp->nlp_flag &= ~NLP_LOGO_SND;
2586 spin_unlock_irq(shost->host_lock);
2587 lpfc_els_free_iocb(phba, elsiocb);
2594 * lpfc_cmpl_els_cmd - Completion callback function for generic els command
2595 * @phba: pointer to lpfc hba data structure.
2596 * @cmdiocb: pointer to lpfc command iocb data structure.
2597 * @rspiocb: pointer to lpfc response iocb data structure.
2599 * This routine is a generic completion callback function for ELS commands.
2600 * Specifically, it is the callback function which does not need to perform
2601 * any command specific operations. It is currently used by the ELS command
2602 * issuing routines for the ELS State Change Request (SCR),
2603 * lpfc_issue_els_scr(), and the ELS Fibre Channel Address Resolution
2604 * Protocol Response (FARPR) routine, lpfc_issue_els_farpr(). Other than
2605 * certain debug loggings, this callback function simply invokes the
2606 * lpfc_els_chk_latt() routine to check whether link went down during the
2607 * discovery process.
2610 lpfc_cmpl_els_cmd(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
2611 struct lpfc_iocbq *rspiocb)
2613 struct lpfc_vport *vport = cmdiocb->vport;
2616 irsp = &rspiocb->iocb;
2618 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
2619 "ELS cmd cmpl: status:x%x/x%x did:x%x",
2620 irsp->ulpStatus, irsp->un.ulpWord[4],
2621 irsp->un.elsreq64.remoteID);
2622 /* ELS cmd tag <ulpIoTag> completes */
2623 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
2624 "0106 ELS cmd tag x%x completes Data: x%x x%x x%x\n",
2625 irsp->ulpIoTag, irsp->ulpStatus,
2626 irsp->un.ulpWord[4], irsp->ulpTimeout);
2627 /* Check to see if link went down during discovery */
2628 lpfc_els_chk_latt(vport);
2629 lpfc_els_free_iocb(phba, cmdiocb);
2634 * lpfc_issue_els_scr - Issue a scr to an node on a vport
2635 * @vport: pointer to a host virtual N_Port data structure.
2636 * @nportid: N_Port identifier to the remote node.
2637 * @retry: number of retries to the command IOCB.
2639 * This routine issues a State Change Request (SCR) to a fabric node
2640 * on a @vport. The remote node @nportid is passed into the function. It
2641 * first search the @vport node list to find the matching ndlp. If no such
2642 * ndlp is found, a new ndlp shall be created for this (SCR) purpose. An
2643 * IOCB is allocated, payload prepared, and the lpfc_sli_issue_iocb()
2644 * routine is invoked to send the SCR IOCB.
2646 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
2647 * will be incremented by 1 for holding the ndlp and the reference to ndlp
2648 * will be stored into the context1 field of the IOCB for the completion
2649 * callback function to the SCR ELS command.
2652 * 0 - Successfully issued scr command
2653 * 1 - Failed to issue scr command
2656 lpfc_issue_els_scr(struct lpfc_vport *vport, uint32_t nportid, uint8_t retry)
2658 struct lpfc_hba *phba = vport->phba;
2660 struct lpfc_iocbq *elsiocb;
2661 struct lpfc_sli *psli;
2664 struct lpfc_nodelist *ndlp;
2667 cmdsize = (sizeof(uint32_t) + sizeof(SCR));
2669 ndlp = lpfc_findnode_did(vport, nportid);
2671 ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL);
2674 lpfc_nlp_init(vport, ndlp, nportid);
2675 lpfc_enqueue_node(vport, ndlp);
2676 } else if (!NLP_CHK_NODE_ACT(ndlp)) {
2677 ndlp = lpfc_enable_node(vport, ndlp, NLP_STE_UNUSED_NODE);
2682 elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp,
2683 ndlp->nlp_DID, ELS_CMD_SCR);
2686 /* This will trigger the release of the node just
2693 icmd = &elsiocb->iocb;
2694 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
2696 *((uint32_t *) (pcmd)) = ELS_CMD_SCR;
2697 pcmd += sizeof(uint32_t);
2699 /* For SCR, remainder of payload is SCR parameter page */
2700 memset(pcmd, 0, sizeof(SCR));
2701 ((SCR *) pcmd)->Function = SCR_FUNC_FULL;
2703 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
2704 "Issue SCR: did:x%x",
2705 ndlp->nlp_DID, 0, 0);
2707 phba->fc_stat.elsXmitSCR++;
2708 elsiocb->iocb_cmpl = lpfc_cmpl_els_cmd;
2709 if (lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0) ==
2711 /* The additional lpfc_nlp_put will cause the following
2712 * lpfc_els_free_iocb routine to trigger the rlease of
2716 lpfc_els_free_iocb(phba, elsiocb);
2719 /* This will cause the callback-function lpfc_cmpl_els_cmd to
2720 * trigger the release of node.
2727 * lpfc_issue_els_farpr - Issue a farp to an node on a vport
2728 * @vport: pointer to a host virtual N_Port data structure.
2729 * @nportid: N_Port identifier to the remote node.
2730 * @retry: number of retries to the command IOCB.
2732 * This routine issues a Fibre Channel Address Resolution Response
2733 * (FARPR) to a node on a vport. The remote node N_Port identifier (@nportid)
2734 * is passed into the function. It first search the @vport node list to find
2735 * the matching ndlp. If no such ndlp is found, a new ndlp shall be created
2736 * for this (FARPR) purpose. An IOCB is allocated, payload prepared, and the
2737 * lpfc_sli_issue_iocb() routine is invoked to send the FARPR ELS command.
2739 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
2740 * will be incremented by 1 for holding the ndlp and the reference to ndlp
2741 * will be stored into the context1 field of the IOCB for the completion
2742 * callback function to the PARPR ELS command.
2745 * 0 - Successfully issued farpr command
2746 * 1 - Failed to issue farpr command
2749 lpfc_issue_els_farpr(struct lpfc_vport *vport, uint32_t nportid, uint8_t retry)
2751 struct lpfc_hba *phba = vport->phba;
2753 struct lpfc_iocbq *elsiocb;
2754 struct lpfc_sli *psli;
2759 struct lpfc_nodelist *ondlp;
2760 struct lpfc_nodelist *ndlp;
2763 cmdsize = (sizeof(uint32_t) + sizeof(FARP));
2765 ndlp = lpfc_findnode_did(vport, nportid);
2767 ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL);
2770 lpfc_nlp_init(vport, ndlp, nportid);
2771 lpfc_enqueue_node(vport, ndlp);
2772 } else if (!NLP_CHK_NODE_ACT(ndlp)) {
2773 ndlp = lpfc_enable_node(vport, ndlp, NLP_STE_UNUSED_NODE);
2778 elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp,
2779 ndlp->nlp_DID, ELS_CMD_RNID);
2781 /* This will trigger the release of the node just
2788 icmd = &elsiocb->iocb;
2789 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
2791 *((uint32_t *) (pcmd)) = ELS_CMD_FARPR;
2792 pcmd += sizeof(uint32_t);
2794 /* Fill in FARPR payload */
2795 fp = (FARP *) (pcmd);
2796 memset(fp, 0, sizeof(FARP));
2797 lp = (uint32_t *) pcmd;
2798 *lp++ = be32_to_cpu(nportid);
2799 *lp++ = be32_to_cpu(vport->fc_myDID);
2801 fp->Mflags = (FARP_MATCH_PORT | FARP_MATCH_NODE);
2803 memcpy(&fp->RportName, &vport->fc_portname, sizeof(struct lpfc_name));
2804 memcpy(&fp->RnodeName, &vport->fc_nodename, sizeof(struct lpfc_name));
2805 ondlp = lpfc_findnode_did(vport, nportid);
2806 if (ondlp && NLP_CHK_NODE_ACT(ondlp)) {
2807 memcpy(&fp->OportName, &ondlp->nlp_portname,
2808 sizeof(struct lpfc_name));
2809 memcpy(&fp->OnodeName, &ondlp->nlp_nodename,
2810 sizeof(struct lpfc_name));
2813 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
2814 "Issue FARPR: did:x%x",
2815 ndlp->nlp_DID, 0, 0);
2817 phba->fc_stat.elsXmitFARPR++;
2818 elsiocb->iocb_cmpl = lpfc_cmpl_els_cmd;
2819 if (lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0) ==
2821 /* The additional lpfc_nlp_put will cause the following
2822 * lpfc_els_free_iocb routine to trigger the release of
2826 lpfc_els_free_iocb(phba, elsiocb);
2829 /* This will cause the callback-function lpfc_cmpl_els_cmd to
2830 * trigger the release of the node.
2837 * lpfc_cancel_retry_delay_tmo - Cancel the timer with delayed iocb-cmd retry
2838 * @vport: pointer to a host virtual N_Port data structure.
2839 * @nlp: pointer to a node-list data structure.
2841 * This routine cancels the timer with a delayed IOCB-command retry for
2842 * a @vport's @ndlp. It stops the timer for the delayed function retrial and
2843 * removes the ELS retry event if it presents. In addition, if the
2844 * NLP_NPR_2B_DISC bit is set in the @nlp's nlp_flag bitmap, ADISC IOCB
2845 * commands are sent for the @vport's nodes that require issuing discovery
2849 lpfc_cancel_retry_delay_tmo(struct lpfc_vport *vport, struct lpfc_nodelist *nlp)
2851 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2852 struct lpfc_work_evt *evtp;
2854 if (!(nlp->nlp_flag & NLP_DELAY_TMO))
2856 spin_lock_irq(shost->host_lock);
2857 nlp->nlp_flag &= ~NLP_DELAY_TMO;
2858 spin_unlock_irq(shost->host_lock);
2859 del_timer_sync(&nlp->nlp_delayfunc);
2860 nlp->nlp_last_elscmd = 0;
2861 if (!list_empty(&nlp->els_retry_evt.evt_listp)) {
2862 list_del_init(&nlp->els_retry_evt.evt_listp);
2863 /* Decrement nlp reference count held for the delayed retry */
2864 evtp = &nlp->els_retry_evt;
2865 lpfc_nlp_put((struct lpfc_nodelist *)evtp->evt_arg1);
2867 if (nlp->nlp_flag & NLP_NPR_2B_DISC) {
2868 spin_lock_irq(shost->host_lock);
2869 nlp->nlp_flag &= ~NLP_NPR_2B_DISC;
2870 spin_unlock_irq(shost->host_lock);
2871 if (vport->num_disc_nodes) {
2872 if (vport->port_state < LPFC_VPORT_READY) {
2873 /* Check if there are more ADISCs to be sent */
2874 lpfc_more_adisc(vport);
2876 /* Check if there are more PLOGIs to be sent */
2877 lpfc_more_plogi(vport);
2878 if (vport->num_disc_nodes == 0) {
2879 spin_lock_irq(shost->host_lock);
2880 vport->fc_flag &= ~FC_NDISC_ACTIVE;
2881 spin_unlock_irq(shost->host_lock);
2882 lpfc_can_disctmo(vport);
2883 lpfc_end_rscn(vport);
2892 * lpfc_els_retry_delay - Timer function with a ndlp delayed function timer
2893 * @ptr: holder for the pointer to the timer function associated data (ndlp).
2895 * This routine is invoked by the ndlp delayed-function timer to check
2896 * whether there is any pending ELS retry event(s) with the node. If not, it
2897 * simply returns. Otherwise, if there is at least one ELS delayed event, it
2898 * adds the delayed events to the HBA work list and invokes the
2899 * lpfc_worker_wake_up() routine to wake up worker thread to process the
2900 * event. Note that lpfc_nlp_get() is called before posting the event to
2901 * the work list to hold reference count of ndlp so that it guarantees the
2902 * reference to ndlp will still be available when the worker thread gets
2903 * to the event associated with the ndlp.
2906 lpfc_els_retry_delay(unsigned long ptr)
2908 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) ptr;
2909 struct lpfc_vport *vport = ndlp->vport;
2910 struct lpfc_hba *phba = vport->phba;
2911 unsigned long flags;
2912 struct lpfc_work_evt *evtp = &ndlp->els_retry_evt;
2914 spin_lock_irqsave(&phba->hbalock, flags);
2915 if (!list_empty(&evtp->evt_listp)) {
2916 spin_unlock_irqrestore(&phba->hbalock, flags);
2920 /* We need to hold the node by incrementing the reference
2921 * count until the queued work is done
2923 evtp->evt_arg1 = lpfc_nlp_get(ndlp);
2924 if (evtp->evt_arg1) {
2925 evtp->evt = LPFC_EVT_ELS_RETRY;
2926 list_add_tail(&evtp->evt_listp, &phba->work_list);
2927 lpfc_worker_wake_up(phba);
2929 spin_unlock_irqrestore(&phba->hbalock, flags);
2934 * lpfc_els_retry_delay_handler - Work thread handler for ndlp delayed function
2935 * @ndlp: pointer to a node-list data structure.
2937 * This routine is the worker-thread handler for processing the @ndlp delayed
2938 * event(s), posted by the lpfc_els_retry_delay() routine. It simply retrieves
2939 * the last ELS command from the associated ndlp and invokes the proper ELS
2940 * function according to the delayed ELS command to retry the command.
2943 lpfc_els_retry_delay_handler(struct lpfc_nodelist *ndlp)
2945 struct lpfc_vport *vport = ndlp->vport;
2946 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2947 uint32_t cmd, did, retry;
2949 spin_lock_irq(shost->host_lock);
2950 did = ndlp->nlp_DID;
2951 cmd = ndlp->nlp_last_elscmd;
2952 ndlp->nlp_last_elscmd = 0;
2954 if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
2955 spin_unlock_irq(shost->host_lock);
2959 ndlp->nlp_flag &= ~NLP_DELAY_TMO;
2960 spin_unlock_irq(shost->host_lock);
2962 * If a discovery event readded nlp_delayfunc after timer
2963 * firing and before processing the timer, cancel the
2966 del_timer_sync(&ndlp->nlp_delayfunc);
2967 retry = ndlp->nlp_retry;
2968 ndlp->nlp_retry = 0;
2972 lpfc_issue_els_flogi(vport, ndlp, retry);
2975 if (!lpfc_issue_els_plogi(vport, ndlp->nlp_DID, retry)) {
2976 ndlp->nlp_prev_state = ndlp->nlp_state;
2977 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
2981 if (!lpfc_issue_els_adisc(vport, ndlp, retry)) {
2982 ndlp->nlp_prev_state = ndlp->nlp_state;
2983 lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
2987 if (!lpfc_issue_els_prli(vport, ndlp, retry)) {
2988 ndlp->nlp_prev_state = ndlp->nlp_state;
2989 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PRLI_ISSUE);
2993 if (!lpfc_issue_els_logo(vport, ndlp, retry)) {
2994 ndlp->nlp_prev_state = ndlp->nlp_state;
2995 lpfc_nlp_set_state(vport, ndlp, NLP_STE_LOGO_ISSUE);
2999 if (!(vport->fc_flag & FC_VPORT_NEEDS_INIT_VPI))
3000 lpfc_issue_els_fdisc(vport, ndlp, retry);
3007 * lpfc_els_retry - Make retry decision on an els command iocb
3008 * @phba: pointer to lpfc hba data structure.
3009 * @cmdiocb: pointer to lpfc command iocb data structure.
3010 * @rspiocb: pointer to lpfc response iocb data structure.
3012 * This routine makes a retry decision on an ELS command IOCB, which has
3013 * failed. The following ELS IOCBs use this function for retrying the command
3014 * when previously issued command responsed with error status: FLOGI, PLOGI,
3015 * PRLI, ADISC, LOGO, and FDISC. Based on the ELS command type and the
3016 * returned error status, it makes the decision whether a retry shall be
3017 * issued for the command, and whether a retry shall be made immediately or
3018 * delayed. In the former case, the corresponding ELS command issuing-function
3019 * is called to retry the command. In the later case, the ELS command shall
3020 * be posted to the ndlp delayed event and delayed function timer set to the
3021 * ndlp for the delayed command issusing.
3024 * 0 - No retry of els command is made
3025 * 1 - Immediate or delayed retry of els command is made
3028 lpfc_els_retry(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
3029 struct lpfc_iocbq *rspiocb)
3031 struct lpfc_vport *vport = cmdiocb->vport;
3032 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3033 IOCB_t *irsp = &rspiocb->iocb;
3034 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) cmdiocb->context1;
3035 struct lpfc_dmabuf *pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
3038 int retry = 0, maxretry = lpfc_max_els_tries, delay = 0;
3044 /* Note: context2 may be 0 for internal driver abort
3045 * of delays ELS command.
3048 if (pcmd && pcmd->virt) {
3049 elscmd = (uint32_t *) (pcmd->virt);
3053 if (ndlp && NLP_CHK_NODE_ACT(ndlp))
3054 did = ndlp->nlp_DID;
3056 /* We should only hit this case for retrying PLOGI */
3057 did = irsp->un.elsreq64.remoteID;
3058 ndlp = lpfc_findnode_did(vport, did);
3059 if ((!ndlp || !NLP_CHK_NODE_ACT(ndlp))
3060 && (cmd != ELS_CMD_PLOGI))
3064 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
3065 "Retry ELS: wd7:x%x wd4:x%x did:x%x",
3066 *(((uint32_t *) irsp) + 7), irsp->un.ulpWord[4], ndlp->nlp_DID);
3068 switch (irsp->ulpStatus) {
3069 case IOSTAT_FCP_RSP_ERROR:
3071 case IOSTAT_REMOTE_STOP:
3072 if (phba->sli_rev == LPFC_SLI_REV4) {
3073 /* This IO was aborted by the target, we don't
3074 * know the rxid and because we did not send the
3075 * ABTS we cannot generate and RRQ.
3077 lpfc_set_rrq_active(phba, ndlp,
3078 cmdiocb->sli4_lxritag, 0, 0);
3081 case IOSTAT_LOCAL_REJECT:
3082 switch ((irsp->un.ulpWord[4] & IOERR_PARAM_MASK)) {
3083 case IOERR_LOOP_OPEN_FAILURE:
3084 if (cmd == ELS_CMD_FLOGI) {
3085 if (PCI_DEVICE_ID_HORNET ==
3086 phba->pcidev->device) {
3087 phba->fc_topology = LPFC_TOPOLOGY_LOOP;
3088 phba->pport->fc_myDID = 0;
3089 phba->alpa_map[0] = 0;
3090 phba->alpa_map[1] = 0;
3093 if (cmd == ELS_CMD_PLOGI && cmdiocb->retry == 0)
3098 case IOERR_ILLEGAL_COMMAND:
3099 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
3100 "0124 Retry illegal cmd x%x "
3101 "retry:x%x delay:x%x\n",
3102 cmd, cmdiocb->retry, delay);
3104 /* All command's retry policy */
3106 if (cmdiocb->retry > 2)
3110 case IOERR_NO_RESOURCES:
3111 logerr = 1; /* HBA out of resources */
3113 if (cmdiocb->retry > 100)
3118 case IOERR_ILLEGAL_FRAME:
3123 case IOERR_SEQUENCE_TIMEOUT:
3124 case IOERR_INVALID_RPI:
3130 case IOSTAT_NPORT_RJT:
3131 case IOSTAT_FABRIC_RJT:
3132 if (irsp->un.ulpWord[4] & RJT_UNAVAIL_TEMP) {
3138 case IOSTAT_NPORT_BSY:
3139 case IOSTAT_FABRIC_BSY:
3140 logerr = 1; /* Fabric / Remote NPort out of resources */
3145 stat.un.lsRjtError = be32_to_cpu(irsp->un.ulpWord[4]);
3146 /* Added for Vendor specifc support
3147 * Just keep retrying for these Rsn / Exp codes
3149 switch (stat.un.b.lsRjtRsnCode) {
3150 case LSRJT_UNABLE_TPC:
3151 if (stat.un.b.lsRjtRsnCodeExp ==
3152 LSEXP_CMD_IN_PROGRESS) {
3153 if (cmd == ELS_CMD_PLOGI) {
3160 if (stat.un.b.lsRjtRsnCodeExp ==
3161 LSEXP_CANT_GIVE_DATA) {
3162 if (cmd == ELS_CMD_PLOGI) {
3169 if ((cmd == ELS_CMD_PLOGI) ||
3170 (cmd == ELS_CMD_PRLI)) {
3172 maxretry = lpfc_max_els_tries + 1;
3176 if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
3177 (cmd == ELS_CMD_FDISC) &&
3178 (stat.un.b.lsRjtRsnCodeExp == LSEXP_OUT_OF_RESOURCE)){
3179 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
3180 "0125 FDISC Failed (x%x). "
3181 "Fabric out of resources\n",
3182 stat.un.lsRjtError);
3183 lpfc_vport_set_state(vport,
3184 FC_VPORT_NO_FABRIC_RSCS);
3188 case LSRJT_LOGICAL_BSY:
3189 if ((cmd == ELS_CMD_PLOGI) ||
3190 (cmd == ELS_CMD_PRLI)) {
3193 } else if (cmd == ELS_CMD_FDISC) {
3194 /* FDISC retry policy */
3196 if (cmdiocb->retry >= 32)
3202 case LSRJT_LOGICAL_ERR:
3203 /* There are some cases where switches return this
3204 * error when they are not ready and should be returning
3205 * Logical Busy. We should delay every time.
3207 if (cmd == ELS_CMD_FDISC &&
3208 stat.un.b.lsRjtRsnCodeExp == LSEXP_PORT_LOGIN_REQ) {
3214 case LSRJT_PROTOCOL_ERR:
3215 if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
3216 (cmd == ELS_CMD_FDISC) &&
3217 ((stat.un.b.lsRjtRsnCodeExp == LSEXP_INVALID_PNAME) ||
3218 (stat.un.b.lsRjtRsnCodeExp == LSEXP_INVALID_NPORT_ID))
3220 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
3221 "0122 FDISC Failed (x%x). "
3222 "Fabric Detected Bad WWN\n",
3223 stat.un.lsRjtError);
3224 lpfc_vport_set_state(vport,
3225 FC_VPORT_FABRIC_REJ_WWN);
3231 case IOSTAT_INTERMED_RSP:
3239 if (did == FDMI_DID)
3242 if ((cmd == ELS_CMD_FLOGI) &&
3243 (phba->fc_topology != LPFC_TOPOLOGY_LOOP) &&
3244 !lpfc_error_lost_link(irsp)) {
3245 /* FLOGI retry policy */
3247 /* retry FLOGI forever */
3249 if (cmdiocb->retry >= 100)
3251 else if (cmdiocb->retry >= 32)
3253 } else if ((cmd == ELS_CMD_FDISC) && !lpfc_error_lost_link(irsp)) {
3254 /* retry FDISCs every second up to devloss */
3256 maxretry = vport->cfg_devloss_tmo;
3261 if (maxretry && (cmdiocb->retry >= maxretry)) {
3262 phba->fc_stat.elsRetryExceeded++;
3266 if ((vport->load_flag & FC_UNLOADING) != 0)
3270 if ((cmd == ELS_CMD_PLOGI) || (cmd == ELS_CMD_FDISC)) {
3271 /* Stop retrying PLOGI and FDISC if in FCF discovery */
3272 if (phba->fcf.fcf_flag & FCF_DISCOVERY) {
3273 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
3274 "2849 Stop retry ELS command "
3275 "x%x to remote NPORT x%x, "
3276 "Data: x%x x%x\n", cmd, did,
3277 cmdiocb->retry, delay);
3282 /* Retry ELS command <elsCmd> to remote NPORT <did> */
3283 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
3284 "0107 Retry ELS command x%x to remote "
3285 "NPORT x%x Data: x%x x%x\n",
3286 cmd, did, cmdiocb->retry, delay);
3288 if (((cmd == ELS_CMD_PLOGI) || (cmd == ELS_CMD_ADISC)) &&
3289 ((irsp->ulpStatus != IOSTAT_LOCAL_REJECT) ||
3290 ((irsp->un.ulpWord[4] & IOERR_PARAM_MASK) !=
3291 IOERR_NO_RESOURCES))) {
3292 /* Don't reset timer for no resources */
3294 /* If discovery / RSCN timer is running, reset it */
3295 if (timer_pending(&vport->fc_disctmo) ||
3296 (vport->fc_flag & FC_RSCN_MODE))
3297 lpfc_set_disctmo(vport);
3300 phba->fc_stat.elsXmitRetry++;
3301 if (ndlp && NLP_CHK_NODE_ACT(ndlp) && delay) {
3302 phba->fc_stat.elsDelayRetry++;
3303 ndlp->nlp_retry = cmdiocb->retry;
3305 /* delay is specified in milliseconds */
3306 mod_timer(&ndlp->nlp_delayfunc,
3307 jiffies + msecs_to_jiffies(delay));
3308 spin_lock_irq(shost->host_lock);
3309 ndlp->nlp_flag |= NLP_DELAY_TMO;
3310 spin_unlock_irq(shost->host_lock);
3312 ndlp->nlp_prev_state = ndlp->nlp_state;
3313 if (cmd == ELS_CMD_PRLI)
3314 lpfc_nlp_set_state(vport, ndlp,
3315 NLP_STE_PRLI_ISSUE);
3317 lpfc_nlp_set_state(vport, ndlp,
3319 ndlp->nlp_last_elscmd = cmd;
3325 lpfc_issue_els_flogi(vport, ndlp, cmdiocb->retry);
3328 lpfc_issue_els_fdisc(vport, ndlp, cmdiocb->retry);
3331 if (ndlp && NLP_CHK_NODE_ACT(ndlp)) {
3332 ndlp->nlp_prev_state = ndlp->nlp_state;
3333 lpfc_nlp_set_state(vport, ndlp,
3334 NLP_STE_PLOGI_ISSUE);
3336 lpfc_issue_els_plogi(vport, did, cmdiocb->retry);
3339 ndlp->nlp_prev_state = ndlp->nlp_state;
3340 lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
3341 lpfc_issue_els_adisc(vport, ndlp, cmdiocb->retry);
3344 ndlp->nlp_prev_state = ndlp->nlp_state;
3345 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PRLI_ISSUE);
3346 lpfc_issue_els_prli(vport, ndlp, cmdiocb->retry);
3349 ndlp->nlp_prev_state = ndlp->nlp_state;
3350 lpfc_nlp_set_state(vport, ndlp, NLP_STE_LOGO_ISSUE);
3351 lpfc_issue_els_logo(vport, ndlp, cmdiocb->retry);
3355 /* No retry ELS command <elsCmd> to remote NPORT <did> */
3357 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
3358 "0137 No retry ELS command x%x to remote "
3359 "NPORT x%x: Out of Resources: Error:x%x/%x\n",
3360 cmd, did, irsp->ulpStatus,
3361 irsp->un.ulpWord[4]);
3364 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
3365 "0108 No retry ELS command x%x to remote "
3366 "NPORT x%x Retried:%d Error:x%x/%x\n",
3367 cmd, did, cmdiocb->retry, irsp->ulpStatus,
3368 irsp->un.ulpWord[4]);
3374 * lpfc_els_free_data - Free lpfc dma buffer and data structure with an iocb
3375 * @phba: pointer to lpfc hba data structure.
3376 * @buf_ptr1: pointer to the lpfc DMA buffer data structure.
3378 * This routine releases the lpfc DMA (Direct Memory Access) buffer(s)
3379 * associated with a command IOCB back to the lpfc DMA buffer pool. It first
3380 * checks to see whether there is a lpfc DMA buffer associated with the
3381 * response of the command IOCB. If so, it will be released before releasing
3382 * the lpfc DMA buffer associated with the IOCB itself.
3385 * 0 - Successfully released lpfc DMA buffer (currently, always return 0)
3388 lpfc_els_free_data(struct lpfc_hba *phba, struct lpfc_dmabuf *buf_ptr1)
3390 struct lpfc_dmabuf *buf_ptr;
3392 /* Free the response before processing the command. */
3393 if (!list_empty(&buf_ptr1->list)) {
3394 list_remove_head(&buf_ptr1->list, buf_ptr,
3397 lpfc_mbuf_free(phba, buf_ptr->virt, buf_ptr->phys);
3400 lpfc_mbuf_free(phba, buf_ptr1->virt, buf_ptr1->phys);
3406 * lpfc_els_free_bpl - Free lpfc dma buffer and data structure with bpl
3407 * @phba: pointer to lpfc hba data structure.
3408 * @buf_ptr: pointer to the lpfc dma buffer data structure.
3410 * This routine releases the lpfc Direct Memory Access (DMA) buffer
3411 * associated with a Buffer Pointer List (BPL) back to the lpfc DMA buffer
3415 * 0 - Successfully released lpfc DMA buffer (currently, always return 0)
3418 lpfc_els_free_bpl(struct lpfc_hba *phba, struct lpfc_dmabuf *buf_ptr)
3420 lpfc_mbuf_free(phba, buf_ptr->virt, buf_ptr->phys);
3426 * lpfc_els_free_iocb - Free a command iocb and its associated resources
3427 * @phba: pointer to lpfc hba data structure.
3428 * @elsiocb: pointer to lpfc els command iocb data structure.
3430 * This routine frees a command IOCB and its associated resources. The
3431 * command IOCB data structure contains the reference to various associated
3432 * resources, these fields must be set to NULL if the associated reference
3434 * context1 - reference to ndlp
3435 * context2 - reference to cmd
3436 * context2->next - reference to rsp
3437 * context3 - reference to bpl
3439 * It first properly decrements the reference count held on ndlp for the
3440 * IOCB completion callback function. If LPFC_DELAY_MEM_FREE flag is not
3441 * set, it invokes the lpfc_els_free_data() routine to release the Direct
3442 * Memory Access (DMA) buffers associated with the IOCB. Otherwise, it
3443 * adds the DMA buffer the @phba data structure for the delayed release.
3444 * If reference to the Buffer Pointer List (BPL) is present, the
3445 * lpfc_els_free_bpl() routine is invoked to release the DMA memory
3446 * associated with BPL. Finally, the lpfc_sli_release_iocbq() routine is
3447 * invoked to release the IOCB data structure back to @phba IOCBQ list.
3450 * 0 - Success (currently, always return 0)
3453 lpfc_els_free_iocb(struct lpfc_hba *phba, struct lpfc_iocbq *elsiocb)
3455 struct lpfc_dmabuf *buf_ptr, *buf_ptr1;
3456 struct lpfc_nodelist *ndlp;
3458 ndlp = (struct lpfc_nodelist *)elsiocb->context1;
3460 if (ndlp->nlp_flag & NLP_DEFER_RM) {
3463 /* If the ndlp is not being used by another discovery
3466 if (!lpfc_nlp_not_used(ndlp)) {
3467 /* If ndlp is being used by another discovery
3468 * thread, just clear NLP_DEFER_RM
3470 ndlp->nlp_flag &= ~NLP_DEFER_RM;
3475 elsiocb->context1 = NULL;
3477 /* context2 = cmd, context2->next = rsp, context3 = bpl */
3478 if (elsiocb->context2) {
3479 if (elsiocb->iocb_flag & LPFC_DELAY_MEM_FREE) {
3480 /* Firmware could still be in progress of DMAing
3481 * payload, so don't free data buffer till after
3484 elsiocb->iocb_flag &= ~LPFC_DELAY_MEM_FREE;
3485 buf_ptr = elsiocb->context2;
3486 elsiocb->context2 = NULL;
3489 spin_lock_irq(&phba->hbalock);
3490 if (!list_empty(&buf_ptr->list)) {
3491 list_remove_head(&buf_ptr->list,
3492 buf_ptr1, struct lpfc_dmabuf,
3494 INIT_LIST_HEAD(&buf_ptr1->list);
3495 list_add_tail(&buf_ptr1->list,
3499 INIT_LIST_HEAD(&buf_ptr->list);
3500 list_add_tail(&buf_ptr->list, &phba->elsbuf);
3502 spin_unlock_irq(&phba->hbalock);
3505 buf_ptr1 = (struct lpfc_dmabuf *) elsiocb->context2;
3506 lpfc_els_free_data(phba, buf_ptr1);
3510 if (elsiocb->context3) {
3511 buf_ptr = (struct lpfc_dmabuf *) elsiocb->context3;
3512 lpfc_els_free_bpl(phba, buf_ptr);
3514 lpfc_sli_release_iocbq(phba, elsiocb);
3519 * lpfc_cmpl_els_logo_acc - Completion callback function to logo acc response
3520 * @phba: pointer to lpfc hba data structure.
3521 * @cmdiocb: pointer to lpfc command iocb data structure.
3522 * @rspiocb: pointer to lpfc response iocb data structure.
3524 * This routine is the completion callback function to the Logout (LOGO)
3525 * Accept (ACC) Response ELS command. This routine is invoked to indicate
3526 * the completion of the LOGO process. It invokes the lpfc_nlp_not_used() to
3527 * release the ndlp if it has the last reference remaining (reference count
3528 * is 1). If succeeded (meaning ndlp released), it sets the IOCB context1
3529 * field to NULL to inform the following lpfc_els_free_iocb() routine no
3530 * ndlp reference count needs to be decremented. Otherwise, the ndlp
3531 * reference use-count shall be decremented by the lpfc_els_free_iocb()
3532 * routine. Finally, the lpfc_els_free_iocb() is invoked to release the
3533 * IOCB data structure.
3536 lpfc_cmpl_els_logo_acc(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
3537 struct lpfc_iocbq *rspiocb)
3539 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) cmdiocb->context1;
3540 struct lpfc_vport *vport = cmdiocb->vport;
3543 irsp = &rspiocb->iocb;
3544 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
3545 "ACC LOGO cmpl: status:x%x/x%x did:x%x",
3546 irsp->ulpStatus, irsp->un.ulpWord[4], ndlp->nlp_DID);
3547 /* ACC to LOGO completes to NPort <nlp_DID> */
3548 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
3549 "0109 ACC to LOGO completes to NPort x%x "
3550 "Data: x%x x%x x%x\n",
3551 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
3554 if (ndlp->nlp_state == NLP_STE_NPR_NODE) {
3555 /* NPort Recovery mode or node is just allocated */
3556 if (!lpfc_nlp_not_used(ndlp)) {
3557 /* If the ndlp is being used by another discovery
3558 * thread, just unregister the RPI.
3560 lpfc_unreg_rpi(vport, ndlp);
3562 /* Indicate the node has already released, should
3563 * not reference to it from within lpfc_els_free_iocb.
3565 cmdiocb->context1 = NULL;
3570 * The driver received a LOGO from the rport and has ACK'd it.
3571 * At this point, the driver is done so release the IOCB
3573 lpfc_els_free_iocb(phba, cmdiocb);
3576 * Remove the ndlp reference if it's a fabric node that has
3577 * sent us an unsolicted LOGO.
3579 if (ndlp->nlp_type & NLP_FABRIC)
3586 * lpfc_mbx_cmpl_dflt_rpi - Completion callbk func for unreg dflt rpi mbox cmd
3587 * @phba: pointer to lpfc hba data structure.
3588 * @pmb: pointer to the driver internal queue element for mailbox command.
3590 * This routine is the completion callback function for unregister default
3591 * RPI (Remote Port Index) mailbox command to the @phba. It simply releases
3592 * the associated lpfc Direct Memory Access (DMA) buffer back to the pool and
3593 * decrements the ndlp reference count held for this completion callback
3594 * function. After that, it invokes the lpfc_nlp_not_used() to check
3595 * whether there is only one reference left on the ndlp. If so, it will
3596 * perform one more decrement and trigger the release of the ndlp.
3599 lpfc_mbx_cmpl_dflt_rpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
3601 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
3602 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2;
3604 pmb->context1 = NULL;
3605 pmb->context2 = NULL;
3607 lpfc_mbuf_free(phba, mp->virt, mp->phys);
3609 mempool_free(pmb, phba->mbox_mem_pool);
3611 if (NLP_CHK_NODE_ACT(ndlp)) {
3613 /* This is the end of the default RPI cleanup logic for
3614 * this ndlp. If no other discovery threads are using
3615 * this ndlp, free all resources associated with it.
3617 lpfc_nlp_not_used(ndlp);
3619 lpfc_drop_node(ndlp->vport, ndlp);
3627 * lpfc_cmpl_els_rsp - Completion callback function for els response iocb cmd
3628 * @phba: pointer to lpfc hba data structure.
3629 * @cmdiocb: pointer to lpfc command iocb data structure.
3630 * @rspiocb: pointer to lpfc response iocb data structure.
3632 * This routine is the completion callback function for ELS Response IOCB
3633 * command. In normal case, this callback function just properly sets the
3634 * nlp_flag bitmap in the ndlp data structure, if the mbox command reference
3635 * field in the command IOCB is not NULL, the referred mailbox command will
3636 * be send out, and then invokes the lpfc_els_free_iocb() routine to release
3637 * the IOCB. Under error conditions, such as when a LS_RJT is returned or a
3638 * link down event occurred during the discovery, the lpfc_nlp_not_used()
3639 * routine shall be invoked trying to release the ndlp if no other threads
3640 * are currently referring it.
3643 lpfc_cmpl_els_rsp(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
3644 struct lpfc_iocbq *rspiocb)
3646 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) cmdiocb->context1;
3647 struct lpfc_vport *vport = ndlp ? ndlp->vport : NULL;
3648 struct Scsi_Host *shost = vport ? lpfc_shost_from_vport(vport) : NULL;
3651 LPFC_MBOXQ_t *mbox = NULL;
3652 struct lpfc_dmabuf *mp = NULL;
3653 uint32_t ls_rjt = 0;
3655 irsp = &rspiocb->iocb;
3657 if (cmdiocb->context_un.mbox)
3658 mbox = cmdiocb->context_un.mbox;
3660 /* First determine if this is a LS_RJT cmpl. Note, this callback
3661 * function can have cmdiocb->contest1 (ndlp) field set to NULL.
3663 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) cmdiocb->context2)->virt);
3664 if (ndlp && NLP_CHK_NODE_ACT(ndlp) &&
3665 (*((uint32_t *) (pcmd)) == ELS_CMD_LS_RJT)) {
3666 /* A LS_RJT associated with Default RPI cleanup has its own
3667 * separate code path.
3669 if (!(ndlp->nlp_flag & NLP_RM_DFLT_RPI))
3673 /* Check to see if link went down during discovery */
3674 if (!ndlp || !NLP_CHK_NODE_ACT(ndlp) || lpfc_els_chk_latt(vport)) {
3676 mp = (struct lpfc_dmabuf *) mbox->context1;
3678 lpfc_mbuf_free(phba, mp->virt, mp->phys);
3681 mempool_free(mbox, phba->mbox_mem_pool);
3683 if (ndlp && NLP_CHK_NODE_ACT(ndlp) &&
3684 (ndlp->nlp_flag & NLP_RM_DFLT_RPI))
3685 if (lpfc_nlp_not_used(ndlp)) {
3687 /* Indicate the node has already released,
3688 * should not reference to it from within
3689 * the routine lpfc_els_free_iocb.
3691 cmdiocb->context1 = NULL;
3696 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
3697 "ELS rsp cmpl: status:x%x/x%x did:x%x",
3698 irsp->ulpStatus, irsp->un.ulpWord[4],
3699 cmdiocb->iocb.un.elsreq64.remoteID);
3700 /* ELS response tag <ulpIoTag> completes */
3701 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
3702 "0110 ELS response tag x%x completes "
3703 "Data: x%x x%x x%x x%x x%x x%x x%x\n",
3704 cmdiocb->iocb.ulpIoTag, rspiocb->iocb.ulpStatus,
3705 rspiocb->iocb.un.ulpWord[4], rspiocb->iocb.ulpTimeout,
3706 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
3709 if ((rspiocb->iocb.ulpStatus == 0)
3710 && (ndlp->nlp_flag & NLP_ACC_REGLOGIN)) {
3711 lpfc_unreg_rpi(vport, ndlp);
3712 /* Increment reference count to ndlp to hold the
3713 * reference to ndlp for the callback function.
3715 mbox->context2 = lpfc_nlp_get(ndlp);
3716 mbox->vport = vport;
3717 if (ndlp->nlp_flag & NLP_RM_DFLT_RPI) {
3718 mbox->mbox_flag |= LPFC_MBX_IMED_UNREG;
3719 mbox->mbox_cmpl = lpfc_mbx_cmpl_dflt_rpi;
3722 mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login;
3723 ndlp->nlp_prev_state = ndlp->nlp_state;
3724 lpfc_nlp_set_state(vport, ndlp,
3725 NLP_STE_REG_LOGIN_ISSUE);
3727 if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT)
3728 != MBX_NOT_FINISHED)
3731 /* Decrement the ndlp reference count we
3732 * set for this failed mailbox command.
3736 /* ELS rsp: Cannot issue reg_login for <NPortid> */
3737 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
3738 "0138 ELS rsp: Cannot issue reg_login for x%x "
3739 "Data: x%x x%x x%x\n",
3740 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
3743 if (lpfc_nlp_not_used(ndlp)) {
3745 /* Indicate node has already been released,
3746 * should not reference to it from within
3747 * the routine lpfc_els_free_iocb.
3749 cmdiocb->context1 = NULL;
3752 /* Do not drop node for lpfc_els_abort'ed ELS cmds */
3753 if (!lpfc_error_lost_link(irsp) &&
3754 ndlp->nlp_flag & NLP_ACC_REGLOGIN) {
3755 if (lpfc_nlp_not_used(ndlp)) {
3757 /* Indicate node has already been
3758 * released, should not reference
3759 * to it from within the routine
3760 * lpfc_els_free_iocb.
3762 cmdiocb->context1 = NULL;
3766 mp = (struct lpfc_dmabuf *) mbox->context1;
3768 lpfc_mbuf_free(phba, mp->virt, mp->phys);
3771 mempool_free(mbox, phba->mbox_mem_pool);
3774 if (ndlp && NLP_CHK_NODE_ACT(ndlp)) {
3775 spin_lock_irq(shost->host_lock);
3776 ndlp->nlp_flag &= ~(NLP_ACC_REGLOGIN | NLP_RM_DFLT_RPI);
3777 spin_unlock_irq(shost->host_lock);
3779 /* If the node is not being used by another discovery thread,
3780 * and we are sending a reject, we are done with it.
3781 * Release driver reference count here and free associated
3785 if (lpfc_nlp_not_used(ndlp))
3786 /* Indicate node has already been released,
3787 * should not reference to it from within
3788 * the routine lpfc_els_free_iocb.
3790 cmdiocb->context1 = NULL;
3793 lpfc_els_free_iocb(phba, cmdiocb);
3798 * lpfc_els_rsp_acc - Prepare and issue an acc response iocb command
3799 * @vport: pointer to a host virtual N_Port data structure.
3800 * @flag: the els command code to be accepted.
3801 * @oldiocb: pointer to the original lpfc command iocb data structure.
3802 * @ndlp: pointer to a node-list data structure.
3803 * @mbox: pointer to the driver internal queue element for mailbox command.
3805 * This routine prepares and issues an Accept (ACC) response IOCB
3806 * command. It uses the @flag to properly set up the IOCB field for the
3807 * specific ACC response command to be issued and invokes the
3808 * lpfc_sli_issue_iocb() routine to send out ACC response IOCB. If a
3809 * @mbox pointer is passed in, it will be put into the context_un.mbox
3810 * field of the IOCB for the completion callback function to issue the
3811 * mailbox command to the HBA later when callback is invoked.
3813 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
3814 * will be incremented by 1 for holding the ndlp and the reference to ndlp
3815 * will be stored into the context1 field of the IOCB for the completion
3816 * callback function to the corresponding response ELS IOCB command.
3819 * 0 - Successfully issued acc response
3820 * 1 - Failed to issue acc response
3823 lpfc_els_rsp_acc(struct lpfc_vport *vport, uint32_t flag,
3824 struct lpfc_iocbq *oldiocb, struct lpfc_nodelist *ndlp,
3827 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3828 struct lpfc_hba *phba = vport->phba;
3831 struct lpfc_iocbq *elsiocb;
3832 struct lpfc_sli *psli;
3836 ELS_PKT *els_pkt_ptr;
3839 oldcmd = &oldiocb->iocb;
3843 cmdsize = sizeof(uint32_t);
3844 elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry,
3845 ndlp, ndlp->nlp_DID, ELS_CMD_ACC);
3847 spin_lock_irq(shost->host_lock);
3848 ndlp->nlp_flag &= ~NLP_LOGO_ACC;
3849 spin_unlock_irq(shost->host_lock);
3853 icmd = &elsiocb->iocb;
3854 icmd->ulpContext = oldcmd->ulpContext; /* Xri / rx_id */
3855 icmd->unsli3.rcvsli3.ox_id = oldcmd->unsli3.rcvsli3.ox_id;
3856 pcmd = (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
3857 *((uint32_t *) (pcmd)) = ELS_CMD_ACC;
3858 pcmd += sizeof(uint32_t);
3860 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
3861 "Issue ACC: did:x%x flg:x%x",
3862 ndlp->nlp_DID, ndlp->nlp_flag, 0);
3865 cmdsize = (sizeof(struct serv_parm) + sizeof(uint32_t));
3866 elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry,
3867 ndlp, ndlp->nlp_DID, ELS_CMD_ACC);
3871 icmd = &elsiocb->iocb;
3872 icmd->ulpContext = oldcmd->ulpContext; /* Xri / rx_id */
3873 icmd->unsli3.rcvsli3.ox_id = oldcmd->unsli3.rcvsli3.ox_id;
3874 pcmd = (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
3877 elsiocb->context_un.mbox = mbox;
3879 *((uint32_t *) (pcmd)) = ELS_CMD_ACC;
3880 pcmd += sizeof(uint32_t);
3881 memcpy(pcmd, &vport->fc_sparam, sizeof(struct serv_parm));
3883 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
3884 "Issue ACC PLOGI: did:x%x flg:x%x",
3885 ndlp->nlp_DID, ndlp->nlp_flag, 0);
3888 cmdsize = sizeof(uint32_t) + sizeof(PRLO);
3889 elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry,
3890 ndlp, ndlp->nlp_DID, ELS_CMD_PRLO);
3894 icmd = &elsiocb->iocb;
3895 icmd->ulpContext = oldcmd->ulpContext; /* Xri / rx_id */
3896 icmd->unsli3.rcvsli3.ox_id = oldcmd->unsli3.rcvsli3.ox_id;
3897 pcmd = (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
3899 memcpy(pcmd, ((struct lpfc_dmabuf *) oldiocb->context2)->virt,
3900 sizeof(uint32_t) + sizeof(PRLO));
3901 *((uint32_t *) (pcmd)) = ELS_CMD_PRLO_ACC;
3902 els_pkt_ptr = (ELS_PKT *) pcmd;
3903 els_pkt_ptr->un.prlo.acceptRspCode = PRLO_REQ_EXECUTED;
3905 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
3906 "Issue ACC PRLO: did:x%x flg:x%x",
3907 ndlp->nlp_DID, ndlp->nlp_flag, 0);
3912 /* Xmit ELS ACC response tag <ulpIoTag> */
3913 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
3914 "0128 Xmit ELS ACC response tag x%x, XRI: x%x, "
3915 "DID: x%x, nlp_flag: x%x nlp_state: x%x RPI: x%x "
3917 elsiocb->iotag, elsiocb->iocb.ulpContext,
3918 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
3919 ndlp->nlp_rpi, vport->fc_flag);
3920 if (ndlp->nlp_flag & NLP_LOGO_ACC) {
3921 spin_lock_irq(shost->host_lock);
3922 ndlp->nlp_flag &= ~NLP_LOGO_ACC;
3923 spin_unlock_irq(shost->host_lock);
3924 elsiocb->iocb_cmpl = lpfc_cmpl_els_logo_acc;
3926 elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp;
3929 phba->fc_stat.elsXmitACC++;
3930 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
3931 if (rc == IOCB_ERROR) {
3932 lpfc_els_free_iocb(phba, elsiocb);
3939 * lpfc_els_rsp_reject - Propare and issue a rjt response iocb command
3940 * @vport: pointer to a virtual N_Port data structure.
3942 * @oldiocb: pointer to the original lpfc command iocb data structure.
3943 * @ndlp: pointer to a node-list data structure.
3944 * @mbox: pointer to the driver internal queue element for mailbox command.
3946 * This routine prepares and issue an Reject (RJT) response IOCB
3947 * command. If a @mbox pointer is passed in, it will be put into the
3948 * context_un.mbox field of the IOCB for the completion callback function
3949 * to issue to the HBA later.
3951 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
3952 * will be incremented by 1 for holding the ndlp and the reference to ndlp
3953 * will be stored into the context1 field of the IOCB for the completion
3954 * callback function to the reject response ELS IOCB command.
3957 * 0 - Successfully issued reject response
3958 * 1 - Failed to issue reject response
3961 lpfc_els_rsp_reject(struct lpfc_vport *vport, uint32_t rejectError,
3962 struct lpfc_iocbq *oldiocb, struct lpfc_nodelist *ndlp,
3965 struct lpfc_hba *phba = vport->phba;
3968 struct lpfc_iocbq *elsiocb;
3969 struct lpfc_sli *psli;
3975 cmdsize = 2 * sizeof(uint32_t);
3976 elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp,
3977 ndlp->nlp_DID, ELS_CMD_LS_RJT);
3981 icmd = &elsiocb->iocb;
3982 oldcmd = &oldiocb->iocb;
3983 icmd->ulpContext = oldcmd->ulpContext; /* Xri / rx_id */
3984 icmd->unsli3.rcvsli3.ox_id = oldcmd->unsli3.rcvsli3.ox_id;
3985 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
3987 *((uint32_t *) (pcmd)) = ELS_CMD_LS_RJT;
3988 pcmd += sizeof(uint32_t);
3989 *((uint32_t *) (pcmd)) = rejectError;
3992 elsiocb->context_un.mbox = mbox;
3994 /* Xmit ELS RJT <err> response tag <ulpIoTag> */
3995 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
3996 "0129 Xmit ELS RJT x%x response tag x%x "
3997 "xri x%x, did x%x, nlp_flag x%x, nlp_state x%x, "
3999 rejectError, elsiocb->iotag,
4000 elsiocb->iocb.ulpContext, ndlp->nlp_DID,
4001 ndlp->nlp_flag, ndlp->nlp_state, ndlp->nlp_rpi);
4002 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
4003 "Issue LS_RJT: did:x%x flg:x%x err:x%x",
4004 ndlp->nlp_DID, ndlp->nlp_flag, rejectError);
4006 phba->fc_stat.elsXmitLSRJT++;
4007 elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp;
4008 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
4010 if (rc == IOCB_ERROR) {
4011 lpfc_els_free_iocb(phba, elsiocb);
4018 * lpfc_els_rsp_adisc_acc - Prepare and issue acc response to adisc iocb cmd
4019 * @vport: pointer to a virtual N_Port data structure.
4020 * @oldiocb: pointer to the original lpfc command iocb data structure.
4021 * @ndlp: pointer to a node-list data structure.
4023 * This routine prepares and issues an Accept (ACC) response to Address
4024 * Discover (ADISC) ELS command. It simply prepares the payload of the IOCB
4025 * and invokes the lpfc_sli_issue_iocb() routine to send out the command.
4027 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
4028 * will be incremented by 1 for holding the ndlp and the reference to ndlp
4029 * will be stored into the context1 field of the IOCB for the completion
4030 * callback function to the ADISC Accept response ELS IOCB command.
4033 * 0 - Successfully issued acc adisc response
4034 * 1 - Failed to issue adisc acc response
4037 lpfc_els_rsp_adisc_acc(struct lpfc_vport *vport, struct lpfc_iocbq *oldiocb,
4038 struct lpfc_nodelist *ndlp)
4040 struct lpfc_hba *phba = vport->phba;
4042 IOCB_t *icmd, *oldcmd;
4043 struct lpfc_iocbq *elsiocb;
4048 cmdsize = sizeof(uint32_t) + sizeof(ADISC);
4049 elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp,
4050 ndlp->nlp_DID, ELS_CMD_ACC);
4054 icmd = &elsiocb->iocb;
4055 oldcmd = &oldiocb->iocb;
4056 icmd->ulpContext = oldcmd->ulpContext; /* Xri / rx_id */
4057 icmd->unsli3.rcvsli3.ox_id = oldcmd->unsli3.rcvsli3.ox_id;
4059 /* Xmit ADISC ACC response tag <ulpIoTag> */
4060 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
4061 "0130 Xmit ADISC ACC response iotag x%x xri: "
4062 "x%x, did x%x, nlp_flag x%x, nlp_state x%x rpi x%x\n",
4063 elsiocb->iotag, elsiocb->iocb.ulpContext,
4064 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
4066 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
4068 *((uint32_t *) (pcmd)) = ELS_CMD_ACC;
4069 pcmd += sizeof(uint32_t);
4071 ap = (ADISC *) (pcmd);
4072 ap->hardAL_PA = phba->fc_pref_ALPA;
4073 memcpy(&ap->portName, &vport->fc_portname, sizeof(struct lpfc_name));
4074 memcpy(&ap->nodeName, &vport->fc_nodename, sizeof(struct lpfc_name));
4075 ap->DID = be32_to_cpu(vport->fc_myDID);
4077 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
4078 "Issue ACC ADISC: did:x%x flg:x%x",
4079 ndlp->nlp_DID, ndlp->nlp_flag, 0);
4081 phba->fc_stat.elsXmitACC++;
4082 elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp;
4083 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
4084 if (rc == IOCB_ERROR) {
4085 lpfc_els_free_iocb(phba, elsiocb);
4092 * lpfc_els_rsp_prli_acc - Prepare and issue acc response to prli iocb cmd
4093 * @vport: pointer to a virtual N_Port data structure.
4094 * @oldiocb: pointer to the original lpfc command iocb data structure.
4095 * @ndlp: pointer to a node-list data structure.
4097 * This routine prepares and issues an Accept (ACC) response to Process
4098 * Login (PRLI) ELS command. It simply prepares the payload of the IOCB
4099 * and invokes the lpfc_sli_issue_iocb() routine to send out the command.
4101 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
4102 * will be incremented by 1 for holding the ndlp and the reference to ndlp
4103 * will be stored into the context1 field of the IOCB for the completion
4104 * callback function to the PRLI Accept response ELS IOCB command.
4107 * 0 - Successfully issued acc prli response
4108 * 1 - Failed to issue acc prli response
4111 lpfc_els_rsp_prli_acc(struct lpfc_vport *vport, struct lpfc_iocbq *oldiocb,
4112 struct lpfc_nodelist *ndlp)
4114 struct lpfc_hba *phba = vport->phba;
4119 struct lpfc_iocbq *elsiocb;
4120 struct lpfc_sli *psli;
4127 cmdsize = sizeof(uint32_t) + sizeof(PRLI);
4128 elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp,
4129 ndlp->nlp_DID, (ELS_CMD_ACC | (ELS_CMD_PRLI & ~ELS_RSP_MASK)));
4133 icmd = &elsiocb->iocb;
4134 oldcmd = &oldiocb->iocb;
4135 icmd->ulpContext = oldcmd->ulpContext; /* Xri / rx_id */
4136 icmd->unsli3.rcvsli3.ox_id = oldcmd->unsli3.rcvsli3.ox_id;
4138 /* Xmit PRLI ACC response tag <ulpIoTag> */
4139 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
4140 "0131 Xmit PRLI ACC response tag x%x xri x%x, "
4141 "did x%x, nlp_flag x%x, nlp_state x%x, rpi x%x\n",
4142 elsiocb->iotag, elsiocb->iocb.ulpContext,
4143 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
4145 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
4147 *((uint32_t *) (pcmd)) = (ELS_CMD_ACC | (ELS_CMD_PRLI & ~ELS_RSP_MASK));
4148 pcmd += sizeof(uint32_t);
4150 /* For PRLI, remainder of payload is PRLI parameter page */
4151 memset(pcmd, 0, sizeof(PRLI));
4153 npr = (PRLI *) pcmd;
4156 * If the remote port is a target and our firmware version is 3.20 or
4157 * later, set the following bits for FC-TAPE support.
4159 if ((ndlp->nlp_type & NLP_FCP_TARGET) &&
4160 (vpd->rev.feaLevelHigh >= 0x02)) {
4161 npr->ConfmComplAllowed = 1;
4163 npr->TaskRetryIdReq = 1;
4166 npr->acceptRspCode = PRLI_REQ_EXECUTED;
4167 npr->estabImagePair = 1;
4168 npr->readXferRdyDis = 1;
4169 npr->ConfmComplAllowed = 1;
4171 npr->prliType = PRLI_FCP_TYPE;
4172 npr->initiatorFunc = 1;
4174 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
4175 "Issue ACC PRLI: did:x%x flg:x%x",
4176 ndlp->nlp_DID, ndlp->nlp_flag, 0);
4178 phba->fc_stat.elsXmitACC++;
4179 elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp;
4181 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
4182 if (rc == IOCB_ERROR) {
4183 lpfc_els_free_iocb(phba, elsiocb);
4190 * lpfc_els_rsp_rnid_acc - Issue rnid acc response iocb command
4191 * @vport: pointer to a virtual N_Port data structure.
4192 * @format: rnid command format.
4193 * @oldiocb: pointer to the original lpfc command iocb data structure.
4194 * @ndlp: pointer to a node-list data structure.
4196 * This routine issues a Request Node Identification Data (RNID) Accept
4197 * (ACC) response. It constructs the RNID ACC response command according to
4198 * the proper @format and then calls the lpfc_sli_issue_iocb() routine to
4199 * issue the response. Note that this command does not need to hold the ndlp
4200 * reference count for the callback. So, the ndlp reference count taken by
4201 * the lpfc_prep_els_iocb() routine is put back and the context1 field of
4202 * IOCB is set to NULL to indicate to the lpfc_els_free_iocb() routine that
4203 * there is no ndlp reference available.
4205 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
4206 * will be incremented by 1 for holding the ndlp and the reference to ndlp
4207 * will be stored into the context1 field of the IOCB for the completion
4208 * callback function. However, for the RNID Accept Response ELS command,
4209 * this is undone later by this routine after the IOCB is allocated.
4212 * 0 - Successfully issued acc rnid response
4213 * 1 - Failed to issue acc rnid response
4216 lpfc_els_rsp_rnid_acc(struct lpfc_vport *vport, uint8_t format,
4217 struct lpfc_iocbq *oldiocb, struct lpfc_nodelist *ndlp)
4219 struct lpfc_hba *phba = vport->phba;
4221 IOCB_t *icmd, *oldcmd;
4222 struct lpfc_iocbq *elsiocb;
4223 struct lpfc_sli *psli;
4229 cmdsize = sizeof(uint32_t) + sizeof(uint32_t)
4230 + (2 * sizeof(struct lpfc_name));
4232 cmdsize += sizeof(RNID_TOP_DISC);
4234 elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp,
4235 ndlp->nlp_DID, ELS_CMD_ACC);
4239 icmd = &elsiocb->iocb;
4240 oldcmd = &oldiocb->iocb;
4241 icmd->ulpContext = oldcmd->ulpContext; /* Xri / rx_id */
4242 icmd->unsli3.rcvsli3.ox_id = oldcmd->unsli3.rcvsli3.ox_id;
4244 /* Xmit RNID ACC response tag <ulpIoTag> */
4245 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
4246 "0132 Xmit RNID ACC response tag x%x xri x%x\n",
4247 elsiocb->iotag, elsiocb->iocb.ulpContext);
4248 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
4249 *((uint32_t *) (pcmd)) = ELS_CMD_ACC;
4250 pcmd += sizeof(uint32_t);
4252 memset(pcmd, 0, sizeof(RNID));
4253 rn = (RNID *) (pcmd);
4254 rn->Format = format;
4255 rn->CommonLen = (2 * sizeof(struct lpfc_name));
4256 memcpy(&rn->portName, &vport->fc_portname, sizeof(struct lpfc_name));
4257 memcpy(&rn->nodeName, &vport->fc_nodename, sizeof(struct lpfc_name));
4260 rn->SpecificLen = 0;
4262 case RNID_TOPOLOGY_DISC:
4263 rn->SpecificLen = sizeof(RNID_TOP_DISC);
4264 memcpy(&rn->un.topologyDisc.portName,
4265 &vport->fc_portname, sizeof(struct lpfc_name));
4266 rn->un.topologyDisc.unitType = RNID_HBA;
4267 rn->un.topologyDisc.physPort = 0;
4268 rn->un.topologyDisc.attachedNodes = 0;
4272 rn->SpecificLen = 0;
4276 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
4277 "Issue ACC RNID: did:x%x flg:x%x",
4278 ndlp->nlp_DID, ndlp->nlp_flag, 0);
4280 phba->fc_stat.elsXmitACC++;
4281 elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp;
4283 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
4284 if (rc == IOCB_ERROR) {
4285 lpfc_els_free_iocb(phba, elsiocb);
4292 * lpfc_els_clear_rrq - Clear the rq that this rrq describes.
4293 * @vport: pointer to a virtual N_Port data structure.
4294 * @iocb: pointer to the lpfc command iocb data structure.
4295 * @ndlp: pointer to a node-list data structure.
4300 lpfc_els_clear_rrq(struct lpfc_vport *vport,
4301 struct lpfc_iocbq *iocb, struct lpfc_nodelist *ndlp)
4303 struct lpfc_hba *phba = vport->phba;
4308 struct lpfc_node_rrq *prrq;
4311 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) iocb->context2)->virt);
4312 pcmd += sizeof(uint32_t);
4313 rrq = (struct RRQ *)pcmd;
4314 rrq->rrq_exchg = be32_to_cpu(rrq->rrq_exchg);
4315 rxid = bf_get(rrq_rxid, rrq);
4317 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
4318 "2883 Clear RRQ for SID:x%x OXID:x%x RXID:x%x"
4320 be32_to_cpu(bf_get(rrq_did, rrq)),
4321 bf_get(rrq_oxid, rrq),
4323 iocb->iotag, iocb->iocb.ulpContext);
4325 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
4326 "Clear RRQ: did:x%x flg:x%x exchg:x%.08x",
4327 ndlp->nlp_DID, ndlp->nlp_flag, rrq->rrq_exchg);
4328 if (vport->fc_myDID == be32_to_cpu(bf_get(rrq_did, rrq)))
4329 xri = bf_get(rrq_oxid, rrq);
4332 prrq = lpfc_get_active_rrq(vport, xri, ndlp->nlp_DID);
4334 lpfc_clr_rrq_active(phba, xri, prrq);
4339 * lpfc_els_rsp_echo_acc - Issue echo acc response
4340 * @vport: pointer to a virtual N_Port data structure.
4341 * @data: pointer to echo data to return in the accept.
4342 * @oldiocb: pointer to the original lpfc command iocb data structure.
4343 * @ndlp: pointer to a node-list data structure.
4346 * 0 - Successfully issued acc echo response
4347 * 1 - Failed to issue acc echo response
4350 lpfc_els_rsp_echo_acc(struct lpfc_vport *vport, uint8_t *data,
4351 struct lpfc_iocbq *oldiocb, struct lpfc_nodelist *ndlp)
4353 struct lpfc_hba *phba = vport->phba;
4354 struct lpfc_iocbq *elsiocb;
4355 struct lpfc_sli *psli;
4361 cmdsize = oldiocb->iocb.unsli3.rcvsli3.acc_len;
4363 /* The accumulated length can exceed the BPL_SIZE. For
4364 * now, use this as the limit
4366 if (cmdsize > LPFC_BPL_SIZE)
4367 cmdsize = LPFC_BPL_SIZE;
4368 elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp,
4369 ndlp->nlp_DID, ELS_CMD_ACC);
4373 elsiocb->iocb.ulpContext = oldiocb->iocb.ulpContext; /* Xri / rx_id */
4374 elsiocb->iocb.unsli3.rcvsli3.ox_id = oldiocb->iocb.unsli3.rcvsli3.ox_id;
4376 /* Xmit ECHO ACC response tag <ulpIoTag> */
4377 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
4378 "2876 Xmit ECHO ACC response tag x%x xri x%x\n",
4379 elsiocb->iotag, elsiocb->iocb.ulpContext);
4380 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
4381 *((uint32_t *) (pcmd)) = ELS_CMD_ACC;
4382 pcmd += sizeof(uint32_t);
4383 memcpy(pcmd, data, cmdsize - sizeof(uint32_t));
4385 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
4386 "Issue ACC ECHO: did:x%x flg:x%x",
4387 ndlp->nlp_DID, ndlp->nlp_flag, 0);
4389 phba->fc_stat.elsXmitACC++;
4390 elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp;
4392 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
4393 if (rc == IOCB_ERROR) {
4394 lpfc_els_free_iocb(phba, elsiocb);
4401 * lpfc_els_disc_adisc - Issue remaining adisc iocbs to npr nodes of a vport
4402 * @vport: pointer to a host virtual N_Port data structure.
4404 * This routine issues Address Discover (ADISC) ELS commands to those
4405 * N_Ports which are in node port recovery state and ADISC has not been issued
4406 * for the @vport. Each time an ELS ADISC IOCB is issued by invoking the
4407 * lpfc_issue_els_adisc() routine, the per @vport number of discover count
4408 * (num_disc_nodes) shall be incremented. If the num_disc_nodes reaches a
4409 * pre-configured threshold (cfg_discovery_threads), the @vport fc_flag will
4410 * be marked with FC_NLP_MORE bit and the process of issuing remaining ADISC
4411 * IOCBs quit for later pick up. On the other hand, after walking through
4412 * all the ndlps with the @vport and there is none ADISC IOCB issued, the
4413 * @vport fc_flag shall be cleared with FC_NLP_MORE bit indicating there is
4414 * no more ADISC need to be sent.
4417 * The number of N_Ports with adisc issued.
4420 lpfc_els_disc_adisc(struct lpfc_vport *vport)
4422 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4423 struct lpfc_nodelist *ndlp, *next_ndlp;
4426 /* go thru NPR nodes and issue any remaining ELS ADISCs */
4427 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) {
4428 if (!NLP_CHK_NODE_ACT(ndlp))
4430 if (ndlp->nlp_state == NLP_STE_NPR_NODE &&
4431 (ndlp->nlp_flag & NLP_NPR_2B_DISC) != 0 &&
4432 (ndlp->nlp_flag & NLP_NPR_ADISC) != 0) {
4433 spin_lock_irq(shost->host_lock);
4434 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
4435 spin_unlock_irq(shost->host_lock);
4436 ndlp->nlp_prev_state = ndlp->nlp_state;
4437 lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
4438 lpfc_issue_els_adisc(vport, ndlp, 0);
4440 vport->num_disc_nodes++;
4441 if (vport->num_disc_nodes >=
4442 vport->cfg_discovery_threads) {
4443 spin_lock_irq(shost->host_lock);
4444 vport->fc_flag |= FC_NLP_MORE;
4445 spin_unlock_irq(shost->host_lock);
4450 if (sentadisc == 0) {
4451 spin_lock_irq(shost->host_lock);
4452 vport->fc_flag &= ~FC_NLP_MORE;
4453 spin_unlock_irq(shost->host_lock);
4459 * lpfc_els_disc_plogi - Issue plogi for all npr nodes of a vport before adisc
4460 * @vport: pointer to a host virtual N_Port data structure.
4462 * This routine issues Port Login (PLOGI) ELS commands to all the N_Ports
4463 * which are in node port recovery state, with a @vport. Each time an ELS
4464 * ADISC PLOGI IOCB is issued by invoking the lpfc_issue_els_plogi() routine,
4465 * the per @vport number of discover count (num_disc_nodes) shall be
4466 * incremented. If the num_disc_nodes reaches a pre-configured threshold
4467 * (cfg_discovery_threads), the @vport fc_flag will be marked with FC_NLP_MORE
4468 * bit set and quit the process of issuing remaining ADISC PLOGIN IOCBs for
4469 * later pick up. On the other hand, after walking through all the ndlps with
4470 * the @vport and there is none ADISC PLOGI IOCB issued, the @vport fc_flag
4471 * shall be cleared with the FC_NLP_MORE bit indicating there is no more ADISC
4472 * PLOGI need to be sent.
4475 * The number of N_Ports with plogi issued.
4478 lpfc_els_disc_plogi(struct lpfc_vport *vport)
4480 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4481 struct lpfc_nodelist *ndlp, *next_ndlp;
4484 /* go thru NPR nodes and issue any remaining ELS PLOGIs */
4485 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) {
4486 if (!NLP_CHK_NODE_ACT(ndlp))
4488 if (ndlp->nlp_state == NLP_STE_NPR_NODE &&
4489 (ndlp->nlp_flag & NLP_NPR_2B_DISC) != 0 &&
4490 (ndlp->nlp_flag & NLP_DELAY_TMO) == 0 &&
4491 (ndlp->nlp_flag & NLP_NPR_ADISC) == 0) {
4492 ndlp->nlp_prev_state = ndlp->nlp_state;
4493 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
4494 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
4496 vport->num_disc_nodes++;
4497 if (vport->num_disc_nodes >=
4498 vport->cfg_discovery_threads) {
4499 spin_lock_irq(shost->host_lock);
4500 vport->fc_flag |= FC_NLP_MORE;
4501 spin_unlock_irq(shost->host_lock);
4507 lpfc_set_disctmo(vport);
4510 spin_lock_irq(shost->host_lock);
4511 vport->fc_flag &= ~FC_NLP_MORE;
4512 spin_unlock_irq(shost->host_lock);
4518 * lpfc_els_flush_rscn - Clean up any rscn activities with a vport
4519 * @vport: pointer to a host virtual N_Port data structure.
4521 * This routine cleans up any Registration State Change Notification
4522 * (RSCN) activity with a @vport. Note that the fc_rscn_flush flag of the
4523 * @vport together with the host_lock is used to prevent multiple thread
4524 * trying to access the RSCN array on a same @vport at the same time.
4527 lpfc_els_flush_rscn(struct lpfc_vport *vport)
4529 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4530 struct lpfc_hba *phba = vport->phba;
4533 spin_lock_irq(shost->host_lock);
4534 if (vport->fc_rscn_flush) {
4535 /* Another thread is walking fc_rscn_id_list on this vport */
4536 spin_unlock_irq(shost->host_lock);
4539 /* Indicate we are walking lpfc_els_flush_rscn on this vport */
4540 vport->fc_rscn_flush = 1;
4541 spin_unlock_irq(shost->host_lock);
4543 for (i = 0; i < vport->fc_rscn_id_cnt; i++) {
4544 lpfc_in_buf_free(phba, vport->fc_rscn_id_list[i]);
4545 vport->fc_rscn_id_list[i] = NULL;
4547 spin_lock_irq(shost->host_lock);
4548 vport->fc_rscn_id_cnt = 0;
4549 vport->fc_flag &= ~(FC_RSCN_MODE | FC_RSCN_DISCOVERY);
4550 spin_unlock_irq(shost->host_lock);
4551 lpfc_can_disctmo(vport);
4552 /* Indicate we are done walking this fc_rscn_id_list */
4553 vport->fc_rscn_flush = 0;
4557 * lpfc_rscn_payload_check - Check whether there is a pending rscn to a did
4558 * @vport: pointer to a host virtual N_Port data structure.
4559 * @did: remote destination port identifier.
4561 * This routine checks whether there is any pending Registration State
4562 * Configuration Notification (RSCN) to a @did on @vport.
4565 * None zero - The @did matched with a pending rscn
4566 * 0 - not able to match @did with a pending rscn
4569 lpfc_rscn_payload_check(struct lpfc_vport *vport, uint32_t did)
4574 uint32_t payload_len, i;
4575 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4577 ns_did.un.word = did;
4579 /* Never match fabric nodes for RSCNs */
4580 if ((did & Fabric_DID_MASK) == Fabric_DID_MASK)
4583 /* If we are doing a FULL RSCN rediscovery, match everything */
4584 if (vport->fc_flag & FC_RSCN_DISCOVERY)
4587 spin_lock_irq(shost->host_lock);
4588 if (vport->fc_rscn_flush) {
4589 /* Another thread is walking fc_rscn_id_list on this vport */
4590 spin_unlock_irq(shost->host_lock);
4593 /* Indicate we are walking fc_rscn_id_list on this vport */
4594 vport->fc_rscn_flush = 1;
4595 spin_unlock_irq(shost->host_lock);
4596 for (i = 0; i < vport->fc_rscn_id_cnt; i++) {
4597 lp = vport->fc_rscn_id_list[i]->virt;
4598 payload_len = be32_to_cpu(*lp++ & ~ELS_CMD_MASK);
4599 payload_len -= sizeof(uint32_t); /* take off word 0 */
4600 while (payload_len) {
4601 rscn_did.un.word = be32_to_cpu(*lp++);
4602 payload_len -= sizeof(uint32_t);
4603 switch (rscn_did.un.b.resv & RSCN_ADDRESS_FORMAT_MASK) {
4604 case RSCN_ADDRESS_FORMAT_PORT:
4605 if ((ns_did.un.b.domain == rscn_did.un.b.domain)
4606 && (ns_did.un.b.area == rscn_did.un.b.area)
4607 && (ns_did.un.b.id == rscn_did.un.b.id))
4608 goto return_did_out;
4610 case RSCN_ADDRESS_FORMAT_AREA:
4611 if ((ns_did.un.b.domain == rscn_did.un.b.domain)
4612 && (ns_did.un.b.area == rscn_did.un.b.area))
4613 goto return_did_out;
4615 case RSCN_ADDRESS_FORMAT_DOMAIN:
4616 if (ns_did.un.b.domain == rscn_did.un.b.domain)
4617 goto return_did_out;
4619 case RSCN_ADDRESS_FORMAT_FABRIC:
4620 goto return_did_out;
4624 /* Indicate we are done with walking fc_rscn_id_list on this vport */
4625 vport->fc_rscn_flush = 0;
4628 /* Indicate we are done with walking fc_rscn_id_list on this vport */
4629 vport->fc_rscn_flush = 0;
4634 * lpfc_rscn_recovery_check - Send recovery event to vport nodes matching rscn
4635 * @vport: pointer to a host virtual N_Port data structure.
4637 * This routine sends recovery (NLP_EVT_DEVICE_RECOVERY) event to the
4638 * state machine for a @vport's nodes that are with pending RSCN (Registration
4639 * State Change Notification).
4642 * 0 - Successful (currently alway return 0)
4645 lpfc_rscn_recovery_check(struct lpfc_vport *vport)
4647 struct lpfc_nodelist *ndlp = NULL;
4649 /* Move all affected nodes by pending RSCNs to NPR state. */
4650 list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
4651 if (!NLP_CHK_NODE_ACT(ndlp) ||
4652 (ndlp->nlp_state == NLP_STE_UNUSED_NODE) ||
4653 !lpfc_rscn_payload_check(vport, ndlp->nlp_DID))
4655 lpfc_disc_state_machine(vport, ndlp, NULL,
4656 NLP_EVT_DEVICE_RECOVERY);
4657 lpfc_cancel_retry_delay_tmo(vport, ndlp);
4663 * lpfc_send_rscn_event - Send an RSCN event to management application
4664 * @vport: pointer to a host virtual N_Port data structure.
4665 * @cmdiocb: pointer to lpfc command iocb data structure.
4667 * lpfc_send_rscn_event sends an RSCN netlink event to management
4671 lpfc_send_rscn_event(struct lpfc_vport *vport,
4672 struct lpfc_iocbq *cmdiocb)
4674 struct lpfc_dmabuf *pcmd;
4675 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4676 uint32_t *payload_ptr;
4677 uint32_t payload_len;
4678 struct lpfc_rscn_event_header *rscn_event_data;
4680 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
4681 payload_ptr = (uint32_t *) pcmd->virt;
4682 payload_len = be32_to_cpu(*payload_ptr & ~ELS_CMD_MASK);
4684 rscn_event_data = kmalloc(sizeof(struct lpfc_rscn_event_header) +
4685 payload_len, GFP_KERNEL);
4686 if (!rscn_event_data) {
4687 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
4688 "0147 Failed to allocate memory for RSCN event\n");
4691 rscn_event_data->event_type = FC_REG_RSCN_EVENT;
4692 rscn_event_data->payload_length = payload_len;
4693 memcpy(rscn_event_data->rscn_payload, payload_ptr,
4696 fc_host_post_vendor_event(shost,
4697 fc_get_event_number(),
4698 sizeof(struct lpfc_els_event_header) + payload_len,
4699 (char *)rscn_event_data,
4702 kfree(rscn_event_data);
4706 * lpfc_els_rcv_rscn - Process an unsolicited rscn iocb
4707 * @vport: pointer to a host virtual N_Port data structure.
4708 * @cmdiocb: pointer to lpfc command iocb data structure.
4709 * @ndlp: pointer to a node-list data structure.
4711 * This routine processes an unsolicited RSCN (Registration State Change
4712 * Notification) IOCB. First, the payload of the unsolicited RSCN is walked
4713 * to invoke fc_host_post_event() routine to the FC transport layer. If the
4714 * discover state machine is about to begin discovery, it just accepts the
4715 * RSCN and the discovery process will satisfy the RSCN. If this RSCN only
4716 * contains N_Port IDs for other vports on this HBA, it just accepts the
4717 * RSCN and ignore processing it. If the state machine is in the recovery
4718 * state, the fc_rscn_id_list of this @vport is walked and the
4719 * lpfc_rscn_recovery_check() routine is invoked to send recovery event for
4720 * all nodes that match RSCN payload. Otherwise, the lpfc_els_handle_rscn()
4721 * routine is invoked to handle the RSCN event.
4724 * 0 - Just sent the acc response
4725 * 1 - Sent the acc response and waited for name server completion
4728 lpfc_els_rcv_rscn(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
4729 struct lpfc_nodelist *ndlp)
4731 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4732 struct lpfc_hba *phba = vport->phba;
4733 struct lpfc_dmabuf *pcmd;
4734 uint32_t *lp, *datap;
4736 uint32_t payload_len, length, nportid, *cmd;
4738 int rscn_id = 0, hba_id = 0;
4741 icmd = &cmdiocb->iocb;
4742 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
4743 lp = (uint32_t *) pcmd->virt;
4745 payload_len = be32_to_cpu(*lp++ & ~ELS_CMD_MASK);
4746 payload_len -= sizeof(uint32_t); /* take off word 0 */
4748 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
4749 "0214 RSCN received Data: x%x x%x x%x x%x\n",
4750 vport->fc_flag, payload_len, *lp,
4751 vport->fc_rscn_id_cnt);
4753 /* Send an RSCN event to the management application */
4754 lpfc_send_rscn_event(vport, cmdiocb);
4756 for (i = 0; i < payload_len/sizeof(uint32_t); i++)
4757 fc_host_post_event(shost, fc_get_event_number(),
4758 FCH_EVT_RSCN, lp[i]);
4760 /* If we are about to begin discovery, just ACC the RSCN.
4761 * Discovery processing will satisfy it.
4763 if (vport->port_state <= LPFC_NS_QRY) {
4764 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
4765 "RCV RSCN ignore: did:x%x/ste:x%x flg:x%x",
4766 ndlp->nlp_DID, vport->port_state, ndlp->nlp_flag);
4768 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
4772 /* If this RSCN just contains NPortIDs for other vports on this HBA,
4773 * just ACC and ignore it.
4775 if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
4776 !(vport->cfg_peer_port_login)) {
4781 nportid = ((be32_to_cpu(nportid)) & Mask_DID);
4782 i -= sizeof(uint32_t);
4784 if (lpfc_find_vport_by_did(phba, nportid))
4787 if (rscn_id == hba_id) {
4788 /* ALL NPortIDs in RSCN are on HBA */
4789 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
4791 "Data: x%x x%x x%x x%x\n",
4792 vport->fc_flag, payload_len,
4793 *lp, vport->fc_rscn_id_cnt);
4794 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
4795 "RCV RSCN vport: did:x%x/ste:x%x flg:x%x",
4796 ndlp->nlp_DID, vport->port_state,
4799 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb,
4805 spin_lock_irq(shost->host_lock);
4806 if (vport->fc_rscn_flush) {
4807 /* Another thread is walking fc_rscn_id_list on this vport */
4808 vport->fc_flag |= FC_RSCN_DISCOVERY;
4809 spin_unlock_irq(shost->host_lock);
4811 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
4814 /* Indicate we are walking fc_rscn_id_list on this vport */
4815 vport->fc_rscn_flush = 1;
4816 spin_unlock_irq(shost->host_lock);
4817 /* Get the array count after successfully have the token */
4818 rscn_cnt = vport->fc_rscn_id_cnt;
4819 /* If we are already processing an RSCN, save the received
4820 * RSCN payload buffer, cmdiocb->context2 to process later.
4822 if (vport->fc_flag & (FC_RSCN_MODE | FC_NDISC_ACTIVE)) {
4823 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
4824 "RCV RSCN defer: did:x%x/ste:x%x flg:x%x",
4825 ndlp->nlp_DID, vport->port_state, ndlp->nlp_flag);
4827 spin_lock_irq(shost->host_lock);
4828 vport->fc_flag |= FC_RSCN_DEFERRED;
4829 if ((rscn_cnt < FC_MAX_HOLD_RSCN) &&
4830 !(vport->fc_flag & FC_RSCN_DISCOVERY)) {
4831 vport->fc_flag |= FC_RSCN_MODE;
4832 spin_unlock_irq(shost->host_lock);
4834 cmd = vport->fc_rscn_id_list[rscn_cnt-1]->virt;
4835 length = be32_to_cpu(*cmd & ~ELS_CMD_MASK);
4838 (payload_len + length <= LPFC_BPL_SIZE)) {
4839 *cmd &= ELS_CMD_MASK;
4840 *cmd |= cpu_to_be32(payload_len + length);
4841 memcpy(((uint8_t *)cmd) + length, lp,
4844 vport->fc_rscn_id_list[rscn_cnt] = pcmd;
4845 vport->fc_rscn_id_cnt++;
4846 /* If we zero, cmdiocb->context2, the calling
4847 * routine will not try to free it.
4849 cmdiocb->context2 = NULL;
4852 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
4853 "0235 Deferred RSCN "
4854 "Data: x%x x%x x%x\n",
4855 vport->fc_rscn_id_cnt, vport->fc_flag,
4858 vport->fc_flag |= FC_RSCN_DISCOVERY;
4859 spin_unlock_irq(shost->host_lock);
4860 /* ReDiscovery RSCN */
4861 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
4862 "0234 ReDiscovery RSCN "
4863 "Data: x%x x%x x%x\n",
4864 vport->fc_rscn_id_cnt, vport->fc_flag,
4867 /* Indicate we are done walking fc_rscn_id_list on this vport */
4868 vport->fc_rscn_flush = 0;
4870 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
4871 /* send RECOVERY event for ALL nodes that match RSCN payload */
4872 lpfc_rscn_recovery_check(vport);
4873 spin_lock_irq(shost->host_lock);
4874 vport->fc_flag &= ~FC_RSCN_DEFERRED;
4875 spin_unlock_irq(shost->host_lock);
4878 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
4879 "RCV RSCN: did:x%x/ste:x%x flg:x%x",
4880 ndlp->nlp_DID, vport->port_state, ndlp->nlp_flag);
4882 spin_lock_irq(shost->host_lock);
4883 vport->fc_flag |= FC_RSCN_MODE;
4884 spin_unlock_irq(shost->host_lock);
4885 vport->fc_rscn_id_list[vport->fc_rscn_id_cnt++] = pcmd;
4886 /* Indicate we are done walking fc_rscn_id_list on this vport */
4887 vport->fc_rscn_flush = 0;
4889 * If we zero, cmdiocb->context2, the calling routine will
4890 * not try to free it.
4892 cmdiocb->context2 = NULL;
4893 lpfc_set_disctmo(vport);
4895 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
4896 /* send RECOVERY event for ALL nodes that match RSCN payload */
4897 lpfc_rscn_recovery_check(vport);
4898 return lpfc_els_handle_rscn(vport);
4902 * lpfc_els_handle_rscn - Handle rscn for a vport
4903 * @vport: pointer to a host virtual N_Port data structure.
4905 * This routine handles the Registration State Configuration Notification
4906 * (RSCN) for a @vport. If login to NameServer does not exist, a new ndlp shall
4907 * be created and a Port Login (PLOGI) to the NameServer is issued. Otherwise,
4908 * if the ndlp to NameServer exists, a Common Transport (CT) command to the
4909 * NameServer shall be issued. If CT command to the NameServer fails to be
4910 * issued, the lpfc_els_flush_rscn() routine shall be invoked to clean up any
4911 * RSCN activities with the @vport.
4914 * 0 - Cleaned up rscn on the @vport
4915 * 1 - Wait for plogi to name server before proceed
4918 lpfc_els_handle_rscn(struct lpfc_vport *vport)
4920 struct lpfc_nodelist *ndlp;
4921 struct lpfc_hba *phba = vport->phba;
4923 /* Ignore RSCN if the port is being torn down. */
4924 if (vport->load_flag & FC_UNLOADING) {
4925 lpfc_els_flush_rscn(vport);
4929 /* Start timer for RSCN processing */
4930 lpfc_set_disctmo(vport);
4932 /* RSCN processed */
4933 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
4934 "0215 RSCN processed Data: x%x x%x x%x x%x\n",
4935 vport->fc_flag, 0, vport->fc_rscn_id_cnt,
4938 /* To process RSCN, first compare RSCN data with NameServer */
4939 vport->fc_ns_retry = 0;
4940 vport->num_disc_nodes = 0;
4942 ndlp = lpfc_findnode_did(vport, NameServer_DID);
4943 if (ndlp && NLP_CHK_NODE_ACT(ndlp)
4944 && ndlp->nlp_state == NLP_STE_UNMAPPED_NODE) {
4945 /* Good ndlp, issue CT Request to NameServer */
4946 if (lpfc_ns_cmd(vport, SLI_CTNS_GID_FT, 0, 0) == 0)
4947 /* Wait for NameServer query cmpl before we can
4951 /* If login to NameServer does not exist, issue one */
4952 /* Good status, issue PLOGI to NameServer */
4953 ndlp = lpfc_findnode_did(vport, NameServer_DID);
4954 if (ndlp && NLP_CHK_NODE_ACT(ndlp))
4955 /* Wait for NameServer login cmpl before we can
4960 ndlp = lpfc_enable_node(vport, ndlp,
4961 NLP_STE_PLOGI_ISSUE);
4963 lpfc_els_flush_rscn(vport);
4966 ndlp->nlp_prev_state = NLP_STE_UNUSED_NODE;
4968 ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL);
4970 lpfc_els_flush_rscn(vport);
4973 lpfc_nlp_init(vport, ndlp, NameServer_DID);
4974 ndlp->nlp_prev_state = ndlp->nlp_state;
4975 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
4977 ndlp->nlp_type |= NLP_FABRIC;
4978 lpfc_issue_els_plogi(vport, NameServer_DID, 0);
4979 /* Wait for NameServer login cmpl before we can
4985 lpfc_els_flush_rscn(vport);
4990 * lpfc_els_rcv_flogi - Process an unsolicited flogi iocb
4991 * @vport: pointer to a host virtual N_Port data structure.
4992 * @cmdiocb: pointer to lpfc command iocb data structure.
4993 * @ndlp: pointer to a node-list data structure.
4995 * This routine processes Fabric Login (FLOGI) IOCB received as an ELS
4996 * unsolicited event. An unsolicited FLOGI can be received in a point-to-
4997 * point topology. As an unsolicited FLOGI should not be received in a loop
4998 * mode, any unsolicited FLOGI received in loop mode shall be ignored. The
4999 * lpfc_check_sparm() routine is invoked to check the parameters in the
5000 * unsolicited FLOGI. If parameters validation failed, the routine
5001 * lpfc_els_rsp_reject() shall be called with reject reason code set to
5002 * LSEXP_SPARM_OPTIONS to reject the FLOGI. Otherwise, the Port WWN in the
5003 * FLOGI shall be compared with the Port WWN of the @vport to determine who
5004 * will initiate PLOGI. The higher lexicographical value party shall has
5005 * higher priority (as the winning port) and will initiate PLOGI and
5006 * communicate Port_IDs (Addresses) for both nodes in PLOGI. The result
5007 * of this will be marked in the @vport fc_flag field with FC_PT2PT_PLOGI
5008 * and then the lpfc_els_rsp_acc() routine is invoked to accept the FLOGI.
5011 * 0 - Successfully processed the unsolicited flogi
5012 * 1 - Failed to process the unsolicited flogi
5015 lpfc_els_rcv_flogi(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
5016 struct lpfc_nodelist *ndlp)
5018 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
5019 struct lpfc_hba *phba = vport->phba;
5020 struct lpfc_dmabuf *pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
5021 uint32_t *lp = (uint32_t *) pcmd->virt;
5022 IOCB_t *icmd = &cmdiocb->iocb;
5023 struct serv_parm *sp;
5030 sp = (struct serv_parm *) lp;
5032 /* FLOGI received */
5034 lpfc_set_disctmo(vport);
5036 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
5037 /* We should never receive a FLOGI in loop mode, ignore it */
5038 did = icmd->un.elsreq64.remoteID;
5040 /* An FLOGI ELS command <elsCmd> was received from DID <did> in
5042 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
5043 "0113 An FLOGI ELS command x%x was "
5044 "received from DID x%x in Loop Mode\n",
5049 if ((lpfc_check_sparm(vport, ndlp, sp, CLASS3, 1))) {
5050 /* For a FLOGI we accept, then if our portname is greater
5051 * then the remote portname we initiate Nport login.
5054 rc = memcmp(&vport->fc_portname, &sp->portName,
5055 sizeof(struct lpfc_name));
5058 if (phba->sli_rev < LPFC_SLI_REV4) {
5059 mbox = mempool_alloc(phba->mbox_mem_pool,
5063 lpfc_linkdown(phba);
5064 lpfc_init_link(phba, mbox,
5066 phba->cfg_link_speed);
5067 mbox->u.mb.un.varInitLnk.lipsr_AL_PA = 0;
5068 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
5069 mbox->vport = vport;
5070 rc = lpfc_sli_issue_mbox(phba, mbox,
5072 lpfc_set_loopback_flag(phba);
5073 if (rc == MBX_NOT_FINISHED)
5074 mempool_free(mbox, phba->mbox_mem_pool);
5077 /* abort the flogi coming back to ourselves
5078 * due to external loopback on the port.
5080 lpfc_els_abort_flogi(phba);
5083 } else if (rc > 0) { /* greater than */
5084 spin_lock_irq(shost->host_lock);
5085 vport->fc_flag |= FC_PT2PT_PLOGI;
5086 spin_unlock_irq(shost->host_lock);
5088 /* If we have the high WWPN we can assign our own
5089 * myDID; otherwise, we have to WAIT for a PLOGI
5090 * from the remote NPort to find out what it
5093 vport->fc_myDID = PT2PT_LocalID;
5097 * The vport state should go to LPFC_FLOGI only
5098 * AFTER we issue a FLOGI, not receive one.
5100 spin_lock_irq(shost->host_lock);
5101 vport->fc_flag |= FC_PT2PT;
5102 vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
5103 spin_unlock_irq(shost->host_lock);
5106 * We temporarily set fc_myDID to make it look like we are
5107 * a Fabric. This is done just so we end up with the right
5108 * did / sid on the FLOGI ACC rsp.
5110 did = vport->fc_myDID;
5111 vport->fc_myDID = Fabric_DID;
5114 /* Reject this request because invalid parameters */
5115 stat.un.b.lsRjtRsvd0 = 0;
5116 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
5117 stat.un.b.lsRjtRsnCodeExp = LSEXP_SPARM_OPTIONS;
5118 stat.un.b.vendorUnique = 0;
5121 * We temporarily set fc_myDID to make it look like we are
5122 * a Fabric. This is done just so we end up with the right
5123 * did / sid on the FLOGI LS_RJT rsp.
5125 did = vport->fc_myDID;
5126 vport->fc_myDID = Fabric_DID;
5128 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
5131 /* Now lets put fc_myDID back to what its supposed to be */
5132 vport->fc_myDID = did;
5138 lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb, ndlp, NULL);
5140 /* Now lets put fc_myDID back to what its supposed to be */
5141 vport->fc_myDID = did;
5143 if (!(vport->fc_flag & FC_PT2PT_PLOGI)) {
5145 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
5149 lpfc_config_link(phba, mbox);
5151 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
5152 mbox->vport = vport;
5153 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
5154 if (rc == MBX_NOT_FINISHED) {
5155 mempool_free(mbox, phba->mbox_mem_pool);
5166 * lpfc_els_rcv_rnid - Process an unsolicited rnid iocb
5167 * @vport: pointer to a host virtual N_Port data structure.
5168 * @cmdiocb: pointer to lpfc command iocb data structure.
5169 * @ndlp: pointer to a node-list data structure.
5171 * This routine processes Request Node Identification Data (RNID) IOCB
5172 * received as an ELS unsolicited event. Only when the RNID specified format
5173 * 0x0 or 0xDF (Topology Discovery Specific Node Identification Data)
5174 * present, this routine will invoke the lpfc_els_rsp_rnid_acc() routine to
5175 * Accept (ACC) the RNID ELS command. All the other RNID formats are
5176 * rejected by invoking the lpfc_els_rsp_reject() routine.
5179 * 0 - Successfully processed rnid iocb (currently always return 0)
5182 lpfc_els_rcv_rnid(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
5183 struct lpfc_nodelist *ndlp)
5185 struct lpfc_dmabuf *pcmd;
5192 icmd = &cmdiocb->iocb;
5193 did = icmd->un.elsreq64.remoteID;
5194 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
5195 lp = (uint32_t *) pcmd->virt;
5202 switch (rn->Format) {
5204 case RNID_TOPOLOGY_DISC:
5206 lpfc_els_rsp_rnid_acc(vport, rn->Format, cmdiocb, ndlp);
5209 /* Reject this request because format not supported */
5210 stat.un.b.lsRjtRsvd0 = 0;
5211 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
5212 stat.un.b.lsRjtRsnCodeExp = LSEXP_CANT_GIVE_DATA;
5213 stat.un.b.vendorUnique = 0;
5214 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
5221 * lpfc_els_rcv_echo - Process an unsolicited echo iocb
5222 * @vport: pointer to a host virtual N_Port data structure.
5223 * @cmdiocb: pointer to lpfc command iocb data structure.
5224 * @ndlp: pointer to a node-list data structure.
5227 * 0 - Successfully processed echo iocb (currently always return 0)
5230 lpfc_els_rcv_echo(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
5231 struct lpfc_nodelist *ndlp)
5235 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) cmdiocb->context2)->virt);
5237 /* skip over first word of echo command to find echo data */
5238 pcmd += sizeof(uint32_t);
5240 lpfc_els_rsp_echo_acc(vport, pcmd, cmdiocb, ndlp);
5245 * lpfc_els_rcv_lirr - Process an unsolicited lirr iocb
5246 * @vport: pointer to a host virtual N_Port data structure.
5247 * @cmdiocb: pointer to lpfc command iocb data structure.
5248 * @ndlp: pointer to a node-list data structure.
5250 * This routine processes a Link Incident Report Registration(LIRR) IOCB
5251 * received as an ELS unsolicited event. Currently, this function just invokes
5252 * the lpfc_els_rsp_reject() routine to reject the LIRR IOCB unconditionally.
5255 * 0 - Successfully processed lirr iocb (currently always return 0)
5258 lpfc_els_rcv_lirr(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
5259 struct lpfc_nodelist *ndlp)
5263 /* For now, unconditionally reject this command */
5264 stat.un.b.lsRjtRsvd0 = 0;
5265 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
5266 stat.un.b.lsRjtRsnCodeExp = LSEXP_CANT_GIVE_DATA;
5267 stat.un.b.vendorUnique = 0;
5268 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
5273 * lpfc_els_rcv_rrq - Process an unsolicited rrq iocb
5274 * @vport: pointer to a host virtual N_Port data structure.
5275 * @cmdiocb: pointer to lpfc command iocb data structure.
5276 * @ndlp: pointer to a node-list data structure.
5278 * This routine processes a Reinstate Recovery Qualifier (RRQ) IOCB
5279 * received as an ELS unsolicited event. A request to RRQ shall only
5280 * be accepted if the Originator Nx_Port N_Port_ID or the Responder
5281 * Nx_Port N_Port_ID of the target Exchange is the same as the
5282 * N_Port_ID of the Nx_Port that makes the request. If the RRQ is
5283 * not accepted, an LS_RJT with reason code "Unable to perform
5284 * command request" and reason code explanation "Invalid Originator
5285 * S_ID" shall be returned. For now, we just unconditionally accept
5286 * RRQ from the target.
5289 lpfc_els_rcv_rrq(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
5290 struct lpfc_nodelist *ndlp)
5292 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
5293 if (vport->phba->sli_rev == LPFC_SLI_REV4)
5294 lpfc_els_clear_rrq(vport, cmdiocb, ndlp);
5298 * lpfc_els_rsp_rls_acc - Completion callbk func for MBX_READ_LNK_STAT mbox cmd
5299 * @phba: pointer to lpfc hba data structure.
5300 * @pmb: pointer to the driver internal queue element for mailbox command.
5302 * This routine is the completion callback function for the MBX_READ_LNK_STAT
5303 * mailbox command. This callback function is to actually send the Accept
5304 * (ACC) response to a Read Port Status (RPS) unsolicited IOCB event. It
5305 * collects the link statistics from the completion of the MBX_READ_LNK_STAT
5306 * mailbox command, constructs the RPS response with the link statistics
5307 * collected, and then invokes the lpfc_sli_issue_iocb() routine to send ACC
5308 * response to the RPS.
5310 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
5311 * will be incremented by 1 for holding the ndlp and the reference to ndlp
5312 * will be stored into the context1 field of the IOCB for the completion
5313 * callback function to the RPS Accept Response ELS IOCB command.
5317 lpfc_els_rsp_rls_acc(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
5321 struct RLS_RSP *rls_rsp;
5323 struct lpfc_iocbq *elsiocb;
5324 struct lpfc_nodelist *ndlp;
5331 ndlp = (struct lpfc_nodelist *) pmb->context2;
5332 rxid = (uint16_t) ((unsigned long)(pmb->context1) & 0xffff);
5333 oxid = (uint16_t) (((unsigned long)(pmb->context1) >> 16) & 0xffff);
5334 pmb->context1 = NULL;
5335 pmb->context2 = NULL;
5337 if (mb->mbxStatus) {
5338 mempool_free(pmb, phba->mbox_mem_pool);
5342 cmdsize = sizeof(struct RLS_RSP) + sizeof(uint32_t);
5343 elsiocb = lpfc_prep_els_iocb(phba->pport, 0, cmdsize,
5344 lpfc_max_els_tries, ndlp,
5345 ndlp->nlp_DID, ELS_CMD_ACC);
5347 /* Decrement the ndlp reference count from previous mbox command */
5351 mempool_free(pmb, phba->mbox_mem_pool);
5355 icmd = &elsiocb->iocb;
5356 icmd->ulpContext = rxid;
5357 icmd->unsli3.rcvsli3.ox_id = oxid;
5359 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
5360 *((uint32_t *) (pcmd)) = ELS_CMD_ACC;
5361 pcmd += sizeof(uint32_t); /* Skip past command */
5362 rls_rsp = (struct RLS_RSP *)pcmd;
5364 rls_rsp->linkFailureCnt = cpu_to_be32(mb->un.varRdLnk.linkFailureCnt);
5365 rls_rsp->lossSyncCnt = cpu_to_be32(mb->un.varRdLnk.lossSyncCnt);
5366 rls_rsp->lossSignalCnt = cpu_to_be32(mb->un.varRdLnk.lossSignalCnt);
5367 rls_rsp->primSeqErrCnt = cpu_to_be32(mb->un.varRdLnk.primSeqErrCnt);
5368 rls_rsp->invalidXmitWord = cpu_to_be32(mb->un.varRdLnk.invalidXmitWord);
5369 rls_rsp->crcCnt = cpu_to_be32(mb->un.varRdLnk.crcCnt);
5370 mempool_free(pmb, phba->mbox_mem_pool);
5371 /* Xmit ELS RLS ACC response tag <ulpIoTag> */
5372 lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_ELS,
5373 "2874 Xmit ELS RLS ACC response tag x%x xri x%x, "
5374 "did x%x, nlp_flag x%x, nlp_state x%x, rpi x%x\n",
5375 elsiocb->iotag, elsiocb->iocb.ulpContext,
5376 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
5378 elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp;
5379 phba->fc_stat.elsXmitACC++;
5380 if (lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0) == IOCB_ERROR)
5381 lpfc_els_free_iocb(phba, elsiocb);
5385 * lpfc_els_rsp_rps_acc - Completion callbk func for MBX_READ_LNK_STAT mbox cmd
5386 * @phba: pointer to lpfc hba data structure.
5387 * @pmb: pointer to the driver internal queue element for mailbox command.
5389 * This routine is the completion callback function for the MBX_READ_LNK_STAT
5390 * mailbox command. This callback function is to actually send the Accept
5391 * (ACC) response to a Read Port Status (RPS) unsolicited IOCB event. It
5392 * collects the link statistics from the completion of the MBX_READ_LNK_STAT
5393 * mailbox command, constructs the RPS response with the link statistics
5394 * collected, and then invokes the lpfc_sli_issue_iocb() routine to send ACC
5395 * response to the RPS.
5397 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
5398 * will be incremented by 1 for holding the ndlp and the reference to ndlp
5399 * will be stored into the context1 field of the IOCB for the completion
5400 * callback function to the RPS Accept Response ELS IOCB command.
5404 lpfc_els_rsp_rps_acc(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
5410 struct lpfc_iocbq *elsiocb;
5411 struct lpfc_nodelist *ndlp;
5419 ndlp = (struct lpfc_nodelist *) pmb->context2;
5420 rxid = (uint16_t) ((unsigned long)(pmb->context1) & 0xffff);
5421 oxid = (uint16_t) (((unsigned long)(pmb->context1) >> 16) & 0xffff);
5422 pmb->context1 = NULL;
5423 pmb->context2 = NULL;
5425 if (mb->mbxStatus) {
5426 mempool_free(pmb, phba->mbox_mem_pool);
5430 cmdsize = sizeof(RPS_RSP) + sizeof(uint32_t);
5431 mempool_free(pmb, phba->mbox_mem_pool);
5432 elsiocb = lpfc_prep_els_iocb(phba->pport, 0, cmdsize,
5433 lpfc_max_els_tries, ndlp,
5434 ndlp->nlp_DID, ELS_CMD_ACC);
5436 /* Decrement the ndlp reference count from previous mbox command */
5442 icmd = &elsiocb->iocb;
5443 icmd->ulpContext = rxid;
5444 icmd->unsli3.rcvsli3.ox_id = oxid;
5446 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
5447 *((uint32_t *) (pcmd)) = ELS_CMD_ACC;
5448 pcmd += sizeof(uint32_t); /* Skip past command */
5449 rps_rsp = (RPS_RSP *)pcmd;
5451 if (phba->fc_topology != LPFC_TOPOLOGY_LOOP)
5455 if (phba->pport->fc_flag & FC_FABRIC)
5459 rps_rsp->portStatus = cpu_to_be16(status);
5460 rps_rsp->linkFailureCnt = cpu_to_be32(mb->un.varRdLnk.linkFailureCnt);
5461 rps_rsp->lossSyncCnt = cpu_to_be32(mb->un.varRdLnk.lossSyncCnt);
5462 rps_rsp->lossSignalCnt = cpu_to_be32(mb->un.varRdLnk.lossSignalCnt);
5463 rps_rsp->primSeqErrCnt = cpu_to_be32(mb->un.varRdLnk.primSeqErrCnt);
5464 rps_rsp->invalidXmitWord = cpu_to_be32(mb->un.varRdLnk.invalidXmitWord);
5465 rps_rsp->crcCnt = cpu_to_be32(mb->un.varRdLnk.crcCnt);
5466 /* Xmit ELS RPS ACC response tag <ulpIoTag> */
5467 lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_ELS,
5468 "0118 Xmit ELS RPS ACC response tag x%x xri x%x, "
5469 "did x%x, nlp_flag x%x, nlp_state x%x, rpi x%x\n",
5470 elsiocb->iotag, elsiocb->iocb.ulpContext,
5471 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
5473 elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp;
5474 phba->fc_stat.elsXmitACC++;
5475 if (lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0) == IOCB_ERROR)
5476 lpfc_els_free_iocb(phba, elsiocb);
5481 * lpfc_els_rcv_rls - Process an unsolicited rls iocb
5482 * @vport: pointer to a host virtual N_Port data structure.
5483 * @cmdiocb: pointer to lpfc command iocb data structure.
5484 * @ndlp: pointer to a node-list data structure.
5486 * This routine processes Read Port Status (RPL) IOCB received as an
5487 * ELS unsolicited event. It first checks the remote port state. If the
5488 * remote port is not in NLP_STE_UNMAPPED_NODE state or NLP_STE_MAPPED_NODE
5489 * state, it invokes the lpfc_els_rsl_reject() routine to send the reject
5490 * response. Otherwise, it issue the MBX_READ_LNK_STAT mailbox command
5491 * for reading the HBA link statistics. It is for the callback function,
5492 * lpfc_els_rsp_rls_acc(), set to the MBX_READ_LNK_STAT mailbox command
5493 * to actually sending out RPL Accept (ACC) response.
5496 * 0 - Successfully processed rls iocb (currently always return 0)
5499 lpfc_els_rcv_rls(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
5500 struct lpfc_nodelist *ndlp)
5502 struct lpfc_hba *phba = vport->phba;
5504 struct lpfc_dmabuf *pcmd;
5507 if ((ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) &&
5508 (ndlp->nlp_state != NLP_STE_MAPPED_NODE))
5509 /* reject the unsolicited RPS request and done with it */
5512 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
5514 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_ATOMIC);
5516 lpfc_read_lnk_stat(phba, mbox);
5517 mbox->context1 = (void *)((unsigned long)
5518 ((cmdiocb->iocb.unsli3.rcvsli3.ox_id << 16) |
5519 cmdiocb->iocb.ulpContext)); /* rx_id */
5520 mbox->context2 = lpfc_nlp_get(ndlp);
5521 mbox->vport = vport;
5522 mbox->mbox_cmpl = lpfc_els_rsp_rls_acc;
5523 if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT)
5524 != MBX_NOT_FINISHED)
5525 /* Mbox completion will send ELS Response */
5527 /* Decrement reference count used for the failed mbox
5531 mempool_free(mbox, phba->mbox_mem_pool);
5534 /* issue rejection response */
5535 stat.un.b.lsRjtRsvd0 = 0;
5536 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
5537 stat.un.b.lsRjtRsnCodeExp = LSEXP_CANT_GIVE_DATA;
5538 stat.un.b.vendorUnique = 0;
5539 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
5544 * lpfc_els_rcv_rtv - Process an unsolicited rtv iocb
5545 * @vport: pointer to a host virtual N_Port data structure.
5546 * @cmdiocb: pointer to lpfc command iocb data structure.
5547 * @ndlp: pointer to a node-list data structure.
5549 * This routine processes Read Timout Value (RTV) IOCB received as an
5550 * ELS unsolicited event. It first checks the remote port state. If the
5551 * remote port is not in NLP_STE_UNMAPPED_NODE state or NLP_STE_MAPPED_NODE
5552 * state, it invokes the lpfc_els_rsl_reject() routine to send the reject
5553 * response. Otherwise, it sends the Accept(ACC) response to a Read Timeout
5554 * Value (RTV) unsolicited IOCB event.
5556 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
5557 * will be incremented by 1 for holding the ndlp and the reference to ndlp
5558 * will be stored into the context1 field of the IOCB for the completion
5559 * callback function to the RPS Accept Response ELS IOCB command.
5562 * 0 - Successfully processed rtv iocb (currently always return 0)
5565 lpfc_els_rcv_rtv(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
5566 struct lpfc_nodelist *ndlp)
5568 struct lpfc_hba *phba = vport->phba;
5570 struct RTV_RSP *rtv_rsp;
5572 struct lpfc_iocbq *elsiocb;
5576 if ((ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) &&
5577 (ndlp->nlp_state != NLP_STE_MAPPED_NODE))
5578 /* reject the unsolicited RPS request and done with it */
5581 cmdsize = sizeof(struct RTV_RSP) + sizeof(uint32_t);
5582 elsiocb = lpfc_prep_els_iocb(phba->pport, 0, cmdsize,
5583 lpfc_max_els_tries, ndlp,
5584 ndlp->nlp_DID, ELS_CMD_ACC);
5589 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
5590 *((uint32_t *) (pcmd)) = ELS_CMD_ACC;
5591 pcmd += sizeof(uint32_t); /* Skip past command */
5593 /* use the command's xri in the response */
5594 elsiocb->iocb.ulpContext = cmdiocb->iocb.ulpContext; /* Xri / rx_id */
5595 elsiocb->iocb.unsli3.rcvsli3.ox_id = cmdiocb->iocb.unsli3.rcvsli3.ox_id;
5597 rtv_rsp = (struct RTV_RSP *)pcmd;
5599 /* populate RTV payload */
5600 rtv_rsp->ratov = cpu_to_be32(phba->fc_ratov * 1000); /* report msecs */
5601 rtv_rsp->edtov = cpu_to_be32(phba->fc_edtov);
5602 bf_set(qtov_edtovres, rtv_rsp, phba->fc_edtovResol ? 1 : 0);
5603 bf_set(qtov_rttov, rtv_rsp, 0); /* Field is for FC ONLY */
5604 rtv_rsp->qtov = cpu_to_be32(rtv_rsp->qtov);
5606 /* Xmit ELS RLS ACC response tag <ulpIoTag> */
5607 lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_ELS,
5608 "2875 Xmit ELS RTV ACC response tag x%x xri x%x, "
5609 "did x%x, nlp_flag x%x, nlp_state x%x, rpi x%x, "
5610 "Data: x%x x%x x%x\n",
5611 elsiocb->iotag, elsiocb->iocb.ulpContext,
5612 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
5614 rtv_rsp->ratov, rtv_rsp->edtov, rtv_rsp->qtov);
5615 elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp;
5616 phba->fc_stat.elsXmitACC++;
5617 if (lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0) == IOCB_ERROR)
5618 lpfc_els_free_iocb(phba, elsiocb);
5622 /* issue rejection response */
5623 stat.un.b.lsRjtRsvd0 = 0;
5624 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
5625 stat.un.b.lsRjtRsnCodeExp = LSEXP_CANT_GIVE_DATA;
5626 stat.un.b.vendorUnique = 0;
5627 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
5631 /* lpfc_els_rcv_rps - Process an unsolicited rps iocb
5632 * @vport: pointer to a host virtual N_Port data structure.
5633 * @cmdiocb: pointer to lpfc command iocb data structure.
5634 * @ndlp: pointer to a node-list data structure.
5636 * This routine processes Read Port Status (RPS) IOCB received as an
5637 * ELS unsolicited event. It first checks the remote port state. If the
5638 * remote port is not in NLP_STE_UNMAPPED_NODE state or NLP_STE_MAPPED_NODE
5639 * state, it invokes the lpfc_els_rsp_reject() routine to send the reject
5640 * response. Otherwise, it issue the MBX_READ_LNK_STAT mailbox command
5641 * for reading the HBA link statistics. It is for the callback function,
5642 * lpfc_els_rsp_rps_acc(), set to the MBX_READ_LNK_STAT mailbox command
5643 * to actually sending out RPS Accept (ACC) response.
5646 * 0 - Successfully processed rps iocb (currently always return 0)
5649 lpfc_els_rcv_rps(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
5650 struct lpfc_nodelist *ndlp)
5652 struct lpfc_hba *phba = vport->phba;
5656 struct lpfc_dmabuf *pcmd;
5660 if ((ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) &&
5661 (ndlp->nlp_state != NLP_STE_MAPPED_NODE))
5662 /* reject the unsolicited RPS request and done with it */
5665 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
5666 lp = (uint32_t *) pcmd->virt;
5667 flag = (be32_to_cpu(*lp++) & 0xf);
5671 ((flag == 1) && (be32_to_cpu(rps->un.portNum) == 0)) ||
5672 ((flag == 2) && (memcmp(&rps->un.portName, &vport->fc_portname,
5673 sizeof(struct lpfc_name)) == 0))) {
5675 printk("Fix me....\n");
5677 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_ATOMIC);
5679 lpfc_read_lnk_stat(phba, mbox);
5680 mbox->context1 = (void *)((unsigned long)
5681 ((cmdiocb->iocb.unsli3.rcvsli3.ox_id << 16) |
5682 cmdiocb->iocb.ulpContext)); /* rx_id */
5683 mbox->context2 = lpfc_nlp_get(ndlp);
5684 mbox->vport = vport;
5685 mbox->mbox_cmpl = lpfc_els_rsp_rps_acc;
5686 if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT)
5687 != MBX_NOT_FINISHED)
5688 /* Mbox completion will send ELS Response */
5690 /* Decrement reference count used for the failed mbox
5694 mempool_free(mbox, phba->mbox_mem_pool);
5699 /* issue rejection response */
5700 stat.un.b.lsRjtRsvd0 = 0;
5701 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
5702 stat.un.b.lsRjtRsnCodeExp = LSEXP_CANT_GIVE_DATA;
5703 stat.un.b.vendorUnique = 0;
5704 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
5708 /* lpfc_issue_els_rrq - Process an unsolicited rps iocb
5709 * @vport: pointer to a host virtual N_Port data structure.
5710 * @ndlp: pointer to a node-list data structure.
5711 * @did: DID of the target.
5712 * @rrq: Pointer to the rrq struct.
5714 * Build a ELS RRQ command and send it to the target. If the issue_iocb is
5715 * Successful the the completion handler will clear the RRQ.
5718 * 0 - Successfully sent rrq els iocb.
5719 * 1 - Failed to send rrq els iocb.
5722 lpfc_issue_els_rrq(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
5723 uint32_t did, struct lpfc_node_rrq *rrq)
5725 struct lpfc_hba *phba = vport->phba;
5726 struct RRQ *els_rrq;
5728 struct lpfc_iocbq *elsiocb;
5734 if (ndlp != rrq->ndlp)
5736 if (!ndlp || !NLP_CHK_NODE_ACT(ndlp))
5739 /* If ndlp is not NULL, we will bump the reference count on it */
5740 cmdsize = (sizeof(uint32_t) + sizeof(struct RRQ));
5741 elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, 0, ndlp, did,
5746 icmd = &elsiocb->iocb;
5747 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
5749 /* For RRQ request, remainder of payload is Exchange IDs */
5750 *((uint32_t *) (pcmd)) = ELS_CMD_RRQ;
5751 pcmd += sizeof(uint32_t);
5752 els_rrq = (struct RRQ *) pcmd;
5754 bf_set(rrq_oxid, els_rrq, phba->sli4_hba.xri_ids[rrq->xritag]);
5755 bf_set(rrq_rxid, els_rrq, rrq->rxid);
5756 bf_set(rrq_did, els_rrq, vport->fc_myDID);
5757 els_rrq->rrq = cpu_to_be32(els_rrq->rrq);
5758 els_rrq->rrq_exchg = cpu_to_be32(els_rrq->rrq_exchg);
5761 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
5762 "Issue RRQ: did:x%x",
5763 did, rrq->xritag, rrq->rxid);
5764 elsiocb->context_un.rrq = rrq;
5765 elsiocb->iocb_cmpl = lpfc_cmpl_els_rrq;
5766 ret = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
5768 if (ret == IOCB_ERROR) {
5769 lpfc_els_free_iocb(phba, elsiocb);
5776 * lpfc_send_rrq - Sends ELS RRQ if needed.
5777 * @phba: pointer to lpfc hba data structure.
5778 * @rrq: pointer to the active rrq.
5780 * This routine will call the lpfc_issue_els_rrq if the rrq is
5781 * still active for the xri. If this function returns a failure then
5782 * the caller needs to clean up the RRQ by calling lpfc_clr_active_rrq.
5784 * Returns 0 Success.
5788 lpfc_send_rrq(struct lpfc_hba *phba, struct lpfc_node_rrq *rrq)
5790 struct lpfc_nodelist *ndlp = lpfc_findnode_did(rrq->vport,
5792 if (lpfc_test_rrq_active(phba, ndlp, rrq->xritag))
5793 return lpfc_issue_els_rrq(rrq->vport, ndlp,
5800 * lpfc_els_rsp_rpl_acc - Issue an accept rpl els command
5801 * @vport: pointer to a host virtual N_Port data structure.
5802 * @cmdsize: size of the ELS command.
5803 * @oldiocb: pointer to the original lpfc command iocb data structure.
5804 * @ndlp: pointer to a node-list data structure.
5806 * This routine issuees an Accept (ACC) Read Port List (RPL) ELS command.
5807 * It is to be called by the lpfc_els_rcv_rpl() routine to accept the RPL.
5809 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
5810 * will be incremented by 1 for holding the ndlp and the reference to ndlp
5811 * will be stored into the context1 field of the IOCB for the completion
5812 * callback function to the RPL Accept Response ELS command.
5815 * 0 - Successfully issued ACC RPL ELS command
5816 * 1 - Failed to issue ACC RPL ELS command
5819 lpfc_els_rsp_rpl_acc(struct lpfc_vport *vport, uint16_t cmdsize,
5820 struct lpfc_iocbq *oldiocb, struct lpfc_nodelist *ndlp)
5822 struct lpfc_hba *phba = vport->phba;
5823 IOCB_t *icmd, *oldcmd;
5825 struct lpfc_iocbq *elsiocb;
5828 elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp,
5829 ndlp->nlp_DID, ELS_CMD_ACC);
5834 icmd = &elsiocb->iocb;
5835 oldcmd = &oldiocb->iocb;
5836 icmd->ulpContext = oldcmd->ulpContext; /* Xri / rx_id */
5837 icmd->unsli3.rcvsli3.ox_id = oldcmd->unsli3.rcvsli3.ox_id;
5839 pcmd = (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
5840 *((uint32_t *) (pcmd)) = ELS_CMD_ACC;
5841 pcmd += sizeof(uint16_t);
5842 *((uint16_t *)(pcmd)) = be16_to_cpu(cmdsize);
5843 pcmd += sizeof(uint16_t);
5845 /* Setup the RPL ACC payload */
5846 rpl_rsp.listLen = be32_to_cpu(1);
5848 rpl_rsp.port_num_blk.portNum = 0;
5849 rpl_rsp.port_num_blk.portID = be32_to_cpu(vport->fc_myDID);
5850 memcpy(&rpl_rsp.port_num_blk.portName, &vport->fc_portname,
5851 sizeof(struct lpfc_name));
5852 memcpy(pcmd, &rpl_rsp, cmdsize - sizeof(uint32_t));
5853 /* Xmit ELS RPL ACC response tag <ulpIoTag> */
5854 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
5855 "0120 Xmit ELS RPL ACC response tag x%x "
5856 "xri x%x, did x%x, nlp_flag x%x, nlp_state x%x, "
5858 elsiocb->iotag, elsiocb->iocb.ulpContext,
5859 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
5861 elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp;
5862 phba->fc_stat.elsXmitACC++;
5863 if (lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0) ==
5865 lpfc_els_free_iocb(phba, elsiocb);
5872 * lpfc_els_rcv_rpl - Process an unsolicited rpl iocb
5873 * @vport: pointer to a host virtual N_Port data structure.
5874 * @cmdiocb: pointer to lpfc command iocb data structure.
5875 * @ndlp: pointer to a node-list data structure.
5877 * This routine processes Read Port List (RPL) IOCB received as an ELS
5878 * unsolicited event. It first checks the remote port state. If the remote
5879 * port is not in NLP_STE_UNMAPPED_NODE and NLP_STE_MAPPED_NODE states, it
5880 * invokes the lpfc_els_rsp_reject() routine to send reject response.
5881 * Otherwise, this routine then invokes the lpfc_els_rsp_rpl_acc() routine
5882 * to accept the RPL.
5885 * 0 - Successfully processed rpl iocb (currently always return 0)
5888 lpfc_els_rcv_rpl(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
5889 struct lpfc_nodelist *ndlp)
5891 struct lpfc_dmabuf *pcmd;
5898 if ((ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) &&
5899 (ndlp->nlp_state != NLP_STE_MAPPED_NODE)) {
5900 /* issue rejection response */
5901 stat.un.b.lsRjtRsvd0 = 0;
5902 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
5903 stat.un.b.lsRjtRsnCodeExp = LSEXP_CANT_GIVE_DATA;
5904 stat.un.b.vendorUnique = 0;
5905 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
5907 /* rejected the unsolicited RPL request and done with it */
5911 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
5912 lp = (uint32_t *) pcmd->virt;
5913 rpl = (RPL *) (lp + 1);
5914 maxsize = be32_to_cpu(rpl->maxsize);
5916 /* We support only one port */
5917 if ((rpl->index == 0) &&
5919 ((maxsize * sizeof(uint32_t)) >= sizeof(RPL_RSP)))) {
5920 cmdsize = sizeof(uint32_t) + sizeof(RPL_RSP);
5922 cmdsize = sizeof(uint32_t) + maxsize * sizeof(uint32_t);
5924 lpfc_els_rsp_rpl_acc(vport, cmdsize, cmdiocb, ndlp);
5930 * lpfc_els_rcv_farp - Process an unsolicited farp request els command
5931 * @vport: pointer to a virtual N_Port data structure.
5932 * @cmdiocb: pointer to lpfc command iocb data structure.
5933 * @ndlp: pointer to a node-list data structure.
5935 * This routine processes Fibre Channel Address Resolution Protocol
5936 * (FARP) Request IOCB received as an ELS unsolicited event. Currently,
5937 * the lpfc driver only supports matching on WWPN or WWNN for FARP. As such,
5938 * FARP_MATCH_PORT flag and FARP_MATCH_NODE flag are checked against the
5939 * Match Flag in the FARP request IOCB: if FARP_MATCH_PORT flag is set, the
5940 * remote PortName is compared against the FC PortName stored in the @vport
5941 * data structure; if FARP_MATCH_NODE flag is set, the remote NodeName is
5942 * compared against the FC NodeName stored in the @vport data structure.
5943 * If any of these matches and the FARP_REQUEST_FARPR flag is set in the
5944 * FARP request IOCB Response Flag, the lpfc_issue_els_farpr() routine is
5945 * invoked to send out FARP Response to the remote node. Before sending the
5946 * FARP Response, however, the FARP_REQUEST_PLOGI flag is check in the FARP
5947 * request IOCB Response Flag and, if it is set, the lpfc_issue_els_plogi()
5948 * routine is invoked to log into the remote port first.
5951 * 0 - Either the FARP Match Mode not supported or successfully processed
5954 lpfc_els_rcv_farp(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
5955 struct lpfc_nodelist *ndlp)
5957 struct lpfc_dmabuf *pcmd;
5961 uint32_t cmd, cnt, did;
5963 icmd = &cmdiocb->iocb;
5964 did = icmd->un.elsreq64.remoteID;
5965 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
5966 lp = (uint32_t *) pcmd->virt;
5970 /* FARP-REQ received from DID <did> */
5971 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
5972 "0601 FARP-REQ received from DID x%x\n", did);
5973 /* We will only support match on WWPN or WWNN */
5974 if (fp->Mflags & ~(FARP_MATCH_NODE | FARP_MATCH_PORT)) {
5979 /* If this FARP command is searching for my portname */
5980 if (fp->Mflags & FARP_MATCH_PORT) {
5981 if (memcmp(&fp->RportName, &vport->fc_portname,
5982 sizeof(struct lpfc_name)) == 0)
5986 /* If this FARP command is searching for my nodename */
5987 if (fp->Mflags & FARP_MATCH_NODE) {
5988 if (memcmp(&fp->RnodeName, &vport->fc_nodename,
5989 sizeof(struct lpfc_name)) == 0)
5994 if ((ndlp->nlp_state == NLP_STE_UNMAPPED_NODE) ||
5995 (ndlp->nlp_state == NLP_STE_MAPPED_NODE)) {
5996 /* Log back into the node before sending the FARP. */
5997 if (fp->Rflags & FARP_REQUEST_PLOGI) {
5998 ndlp->nlp_prev_state = ndlp->nlp_state;
5999 lpfc_nlp_set_state(vport, ndlp,
6000 NLP_STE_PLOGI_ISSUE);
6001 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
6004 /* Send a FARP response to that node */
6005 if (fp->Rflags & FARP_REQUEST_FARPR)
6006 lpfc_issue_els_farpr(vport, did, 0);
6013 * lpfc_els_rcv_farpr - Process an unsolicited farp response iocb
6014 * @vport: pointer to a host virtual N_Port data structure.
6015 * @cmdiocb: pointer to lpfc command iocb data structure.
6016 * @ndlp: pointer to a node-list data structure.
6018 * This routine processes Fibre Channel Address Resolution Protocol
6019 * Response (FARPR) IOCB received as an ELS unsolicited event. It simply
6020 * invokes the lpfc_els_rsp_acc() routine to the remote node to accept
6021 * the FARP response request.
6024 * 0 - Successfully processed FARPR IOCB (currently always return 0)
6027 lpfc_els_rcv_farpr(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
6028 struct lpfc_nodelist *ndlp)
6030 struct lpfc_dmabuf *pcmd;
6035 icmd = &cmdiocb->iocb;
6036 did = icmd->un.elsreq64.remoteID;
6037 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
6038 lp = (uint32_t *) pcmd->virt;
6041 /* FARP-RSP received from DID <did> */
6042 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
6043 "0600 FARP-RSP received from DID x%x\n", did);
6044 /* ACCEPT the Farp resp request */
6045 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
6051 * lpfc_els_rcv_fan - Process an unsolicited fan iocb command
6052 * @vport: pointer to a host virtual N_Port data structure.
6053 * @cmdiocb: pointer to lpfc command iocb data structure.
6054 * @fan_ndlp: pointer to a node-list data structure.
6056 * This routine processes a Fabric Address Notification (FAN) IOCB
6057 * command received as an ELS unsolicited event. The FAN ELS command will
6058 * only be processed on a physical port (i.e., the @vport represents the
6059 * physical port). The fabric NodeName and PortName from the FAN IOCB are
6060 * compared against those in the phba data structure. If any of those is
6061 * different, the lpfc_initial_flogi() routine is invoked to initialize
6062 * Fabric Login (FLOGI) to the fabric to start the discover over. Otherwise,
6063 * if both of those are identical, the lpfc_issue_fabric_reglogin() routine
6064 * is invoked to register login to the fabric.
6067 * 0 - Successfully processed fan iocb (currently always return 0).
6070 lpfc_els_rcv_fan(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
6071 struct lpfc_nodelist *fan_ndlp)
6073 struct lpfc_hba *phba = vport->phba;
6077 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, "0265 FAN received\n");
6078 lp = (uint32_t *)((struct lpfc_dmabuf *)cmdiocb->context2)->virt;
6080 /* FAN received; Fan does not have a reply sequence */
6081 if ((vport == phba->pport) &&
6082 (vport->port_state == LPFC_LOCAL_CFG_LINK)) {
6083 if ((memcmp(&phba->fc_fabparam.nodeName, &fp->FnodeName,
6084 sizeof(struct lpfc_name))) ||
6085 (memcmp(&phba->fc_fabparam.portName, &fp->FportName,
6086 sizeof(struct lpfc_name)))) {
6087 /* This port has switched fabrics. FLOGI is required */
6088 lpfc_issue_init_vfi(vport);
6090 /* FAN verified - skip FLOGI */
6091 vport->fc_myDID = vport->fc_prevDID;
6092 if (phba->sli_rev < LPFC_SLI_REV4)
6093 lpfc_issue_fabric_reglogin(vport);
6095 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
6096 "3138 Need register VFI: (x%x/%x)\n",
6097 vport->fc_prevDID, vport->fc_myDID);
6098 lpfc_issue_reg_vfi(vport);
6106 * lpfc_els_timeout - Handler funciton to the els timer
6107 * @ptr: holder for the timer function associated data.
6109 * This routine is invoked by the ELS timer after timeout. It posts the ELS
6110 * timer timeout event by setting the WORKER_ELS_TMO bit to the work port
6111 * event bitmap and then invokes the lpfc_worker_wake_up() routine to wake
6112 * up the worker thread. It is for the worker thread to invoke the routine
6113 * lpfc_els_timeout_handler() to work on the posted event WORKER_ELS_TMO.
6116 lpfc_els_timeout(unsigned long ptr)
6118 struct lpfc_vport *vport = (struct lpfc_vport *) ptr;
6119 struct lpfc_hba *phba = vport->phba;
6120 uint32_t tmo_posted;
6121 unsigned long iflag;
6123 spin_lock_irqsave(&vport->work_port_lock, iflag);
6124 tmo_posted = vport->work_port_events & WORKER_ELS_TMO;
6126 vport->work_port_events |= WORKER_ELS_TMO;
6127 spin_unlock_irqrestore(&vport->work_port_lock, iflag);
6130 lpfc_worker_wake_up(phba);
6136 * lpfc_els_timeout_handler - Process an els timeout event
6137 * @vport: pointer to a virtual N_Port data structure.
6139 * This routine is the actual handler function that processes an ELS timeout
6140 * event. It walks the ELS ring to get and abort all the IOCBs (except the
6141 * ABORT/CLOSE/FARP/FARPR/FDISC), which are associated with the @vport by
6142 * invoking the lpfc_sli_issue_abort_iotag() routine.
6145 lpfc_els_timeout_handler(struct lpfc_vport *vport)
6147 struct lpfc_hba *phba = vport->phba;
6148 struct lpfc_sli_ring *pring;
6149 struct lpfc_iocbq *tmp_iocb, *piocb;
6151 struct lpfc_dmabuf *pcmd;
6152 uint32_t els_command = 0;
6154 uint32_t remote_ID = 0xffffffff;
6155 LIST_HEAD(txcmplq_completions);
6156 LIST_HEAD(abort_list);
6159 timeout = (uint32_t)(phba->fc_ratov << 1);
6161 pring = &phba->sli.ring[LPFC_ELS_RING];
6163 spin_lock_irq(&phba->hbalock);
6164 list_splice_init(&pring->txcmplq, &txcmplq_completions);
6165 spin_unlock_irq(&phba->hbalock);
6167 list_for_each_entry_safe(piocb, tmp_iocb, &txcmplq_completions, list) {
6170 if ((piocb->iocb_flag & LPFC_IO_LIBDFC) != 0 ||
6171 piocb->iocb.ulpCommand == CMD_ABORT_XRI_CN ||
6172 piocb->iocb.ulpCommand == CMD_CLOSE_XRI_CN)
6175 if (piocb->vport != vport)
6178 pcmd = (struct lpfc_dmabuf *) piocb->context2;
6180 els_command = *(uint32_t *) (pcmd->virt);
6182 if (els_command == ELS_CMD_FARP ||
6183 els_command == ELS_CMD_FARPR ||
6184 els_command == ELS_CMD_FDISC)
6187 if (piocb->drvrTimeout > 0) {
6188 if (piocb->drvrTimeout >= timeout)
6189 piocb->drvrTimeout -= timeout;
6191 piocb->drvrTimeout = 0;
6195 remote_ID = 0xffffffff;
6196 if (cmd->ulpCommand != CMD_GEN_REQUEST64_CR)
6197 remote_ID = cmd->un.elsreq64.remoteID;
6199 struct lpfc_nodelist *ndlp;
6200 ndlp = __lpfc_findnode_rpi(vport, cmd->ulpContext);
6201 if (ndlp && NLP_CHK_NODE_ACT(ndlp))
6202 remote_ID = ndlp->nlp_DID;
6204 list_add_tail(&piocb->dlist, &abort_list);
6206 spin_lock_irq(&phba->hbalock);
6207 list_splice(&txcmplq_completions, &pring->txcmplq);
6208 spin_unlock_irq(&phba->hbalock);
6210 list_for_each_entry_safe(piocb, tmp_iocb, &abort_list, dlist) {
6211 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
6212 "0127 ELS timeout Data: x%x x%x x%x "
6213 "x%x\n", els_command,
6214 remote_ID, cmd->ulpCommand, cmd->ulpIoTag);
6215 spin_lock_irq(&phba->hbalock);
6216 list_del_init(&piocb->dlist);
6217 lpfc_sli_issue_abort_iotag(phba, pring, piocb);
6218 spin_unlock_irq(&phba->hbalock);
6221 if (phba->sli.ring[LPFC_ELS_RING].txcmplq_cnt)
6222 mod_timer(&vport->els_tmofunc, jiffies + HZ * timeout);
6226 * lpfc_els_flush_cmd - Clean up the outstanding els commands to a vport
6227 * @vport: pointer to a host virtual N_Port data structure.
6229 * This routine is used to clean up all the outstanding ELS commands on a
6230 * @vport. It first aborts the @vport by invoking lpfc_fabric_abort_vport()
6231 * routine. After that, it walks the ELS transmit queue to remove all the
6232 * IOCBs with the @vport other than the QUE_RING and ABORT/CLOSE IOCBs. For
6233 * the IOCBs with a non-NULL completion callback function, the callback
6234 * function will be invoked with the status set to IOSTAT_LOCAL_REJECT and
6235 * un.ulpWord[4] set to IOERR_SLI_ABORTED. For IOCBs with a NULL completion
6236 * callback function, the IOCB will simply be released. Finally, it walks
6237 * the ELS transmit completion queue to issue an abort IOCB to any transmit
6238 * completion queue IOCB that is associated with the @vport and is not
6239 * an IOCB from libdfc (i.e., the management plane IOCBs that are not
6240 * part of the discovery state machine) out to HBA by invoking the
6241 * lpfc_sli_issue_abort_iotag() routine. Note that this function issues the
6242 * abort IOCB to any transmit completion queueed IOCB, it does not guarantee
6243 * the IOCBs are aborted when this function returns.
6246 lpfc_els_flush_cmd(struct lpfc_vport *vport)
6248 LIST_HEAD(completions);
6249 struct lpfc_hba *phba = vport->phba;
6250 struct lpfc_sli_ring *pring = &phba->sli.ring[LPFC_ELS_RING];
6251 struct lpfc_iocbq *tmp_iocb, *piocb;
6254 lpfc_fabric_abort_vport(vport);
6256 spin_lock_irq(&phba->hbalock);
6257 list_for_each_entry_safe(piocb, tmp_iocb, &pring->txq, list) {
6260 if (piocb->iocb_flag & LPFC_IO_LIBDFC) {
6264 /* Do not flush out the QUE_RING and ABORT/CLOSE iocbs */
6265 if (cmd->ulpCommand == CMD_QUE_RING_BUF_CN ||
6266 cmd->ulpCommand == CMD_QUE_RING_BUF64_CN ||
6267 cmd->ulpCommand == CMD_CLOSE_XRI_CN ||
6268 cmd->ulpCommand == CMD_ABORT_XRI_CN)
6271 if (piocb->vport != vport)
6274 list_move_tail(&piocb->list, &completions);
6278 list_for_each_entry_safe(piocb, tmp_iocb, &pring->txcmplq, list) {
6279 if (piocb->iocb_flag & LPFC_IO_LIBDFC) {
6283 if (piocb->vport != vport)
6286 lpfc_sli_issue_abort_iotag(phba, pring, piocb);
6288 spin_unlock_irq(&phba->hbalock);
6290 /* Cancell all the IOCBs from the completions list */
6291 lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
6298 * lpfc_els_flush_all_cmd - Clean up all the outstanding els commands to a HBA
6299 * @phba: pointer to lpfc hba data structure.
6301 * This routine is used to clean up all the outstanding ELS commands on a
6302 * @phba. It first aborts the @phba by invoking the lpfc_fabric_abort_hba()
6303 * routine. After that, it walks the ELS transmit queue to remove all the
6304 * IOCBs to the @phba other than the QUE_RING and ABORT/CLOSE IOCBs. For
6305 * the IOCBs with the completion callback function associated, the callback
6306 * function will be invoked with the status set to IOSTAT_LOCAL_REJECT and
6307 * un.ulpWord[4] set to IOERR_SLI_ABORTED. For IOCBs without the completion
6308 * callback function associated, the IOCB will simply be released. Finally,
6309 * it walks the ELS transmit completion queue to issue an abort IOCB to any
6310 * transmit completion queue IOCB that is not an IOCB from libdfc (i.e., the
6311 * management plane IOCBs that are not part of the discovery state machine)
6312 * out to HBA by invoking the lpfc_sli_issue_abort_iotag() routine.
6315 lpfc_els_flush_all_cmd(struct lpfc_hba *phba)
6317 LIST_HEAD(completions);
6318 struct lpfc_sli_ring *pring = &phba->sli.ring[LPFC_ELS_RING];
6319 struct lpfc_iocbq *tmp_iocb, *piocb;
6322 lpfc_fabric_abort_hba(phba);
6323 spin_lock_irq(&phba->hbalock);
6324 list_for_each_entry_safe(piocb, tmp_iocb, &pring->txq, list) {
6326 if (piocb->iocb_flag & LPFC_IO_LIBDFC)
6328 /* Do not flush out the QUE_RING and ABORT/CLOSE iocbs */
6329 if (cmd->ulpCommand == CMD_QUE_RING_BUF_CN ||
6330 cmd->ulpCommand == CMD_QUE_RING_BUF64_CN ||
6331 cmd->ulpCommand == CMD_CLOSE_XRI_CN ||
6332 cmd->ulpCommand == CMD_ABORT_XRI_CN)
6334 list_move_tail(&piocb->list, &completions);
6337 list_for_each_entry_safe(piocb, tmp_iocb, &pring->txcmplq, list) {
6338 if (piocb->iocb_flag & LPFC_IO_LIBDFC)
6340 lpfc_sli_issue_abort_iotag(phba, pring, piocb);
6342 spin_unlock_irq(&phba->hbalock);
6344 /* Cancel all the IOCBs from the completions list */
6345 lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
6352 * lpfc_send_els_failure_event - Posts an ELS command failure event
6353 * @phba: Pointer to hba context object.
6354 * @cmdiocbp: Pointer to command iocb which reported error.
6355 * @rspiocbp: Pointer to response iocb which reported error.
6357 * This function sends an event when there is an ELS command
6361 lpfc_send_els_failure_event(struct lpfc_hba *phba,
6362 struct lpfc_iocbq *cmdiocbp,
6363 struct lpfc_iocbq *rspiocbp)
6365 struct lpfc_vport *vport = cmdiocbp->vport;
6366 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
6367 struct lpfc_lsrjt_event lsrjt_event;
6368 struct lpfc_fabric_event_header fabric_event;
6370 struct lpfc_nodelist *ndlp;
6373 ndlp = cmdiocbp->context1;
6374 if (!ndlp || !NLP_CHK_NODE_ACT(ndlp))
6377 if (rspiocbp->iocb.ulpStatus == IOSTAT_LS_RJT) {
6378 lsrjt_event.header.event_type = FC_REG_ELS_EVENT;
6379 lsrjt_event.header.subcategory = LPFC_EVENT_LSRJT_RCV;
6380 memcpy(lsrjt_event.header.wwpn, &ndlp->nlp_portname,
6381 sizeof(struct lpfc_name));
6382 memcpy(lsrjt_event.header.wwnn, &ndlp->nlp_nodename,
6383 sizeof(struct lpfc_name));
6384 pcmd = (uint32_t *) (((struct lpfc_dmabuf *)
6385 cmdiocbp->context2)->virt);
6386 lsrjt_event.command = (pcmd != NULL) ? *pcmd : 0;
6387 stat.un.lsRjtError = be32_to_cpu(rspiocbp->iocb.un.ulpWord[4]);
6388 lsrjt_event.reason_code = stat.un.b.lsRjtRsnCode;
6389 lsrjt_event.explanation = stat.un.b.lsRjtRsnCodeExp;
6390 fc_host_post_vendor_event(shost,
6391 fc_get_event_number(),
6392 sizeof(lsrjt_event),
6393 (char *)&lsrjt_event,
6397 if ((rspiocbp->iocb.ulpStatus == IOSTAT_NPORT_BSY) ||
6398 (rspiocbp->iocb.ulpStatus == IOSTAT_FABRIC_BSY)) {
6399 fabric_event.event_type = FC_REG_FABRIC_EVENT;
6400 if (rspiocbp->iocb.ulpStatus == IOSTAT_NPORT_BSY)
6401 fabric_event.subcategory = LPFC_EVENT_PORT_BUSY;
6403 fabric_event.subcategory = LPFC_EVENT_FABRIC_BUSY;
6404 memcpy(fabric_event.wwpn, &ndlp->nlp_portname,
6405 sizeof(struct lpfc_name));
6406 memcpy(fabric_event.wwnn, &ndlp->nlp_nodename,
6407 sizeof(struct lpfc_name));
6408 fc_host_post_vendor_event(shost,
6409 fc_get_event_number(),
6410 sizeof(fabric_event),
6411 (char *)&fabric_event,
6419 * lpfc_send_els_event - Posts unsolicited els event
6420 * @vport: Pointer to vport object.
6421 * @ndlp: Pointer FC node object.
6422 * @cmd: ELS command code.
6424 * This function posts an event when there is an incoming
6425 * unsolicited ELS command.
6428 lpfc_send_els_event(struct lpfc_vport *vport,
6429 struct lpfc_nodelist *ndlp,
6432 struct lpfc_els_event_header *els_data = NULL;
6433 struct lpfc_logo_event *logo_data = NULL;
6434 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
6436 if (*payload == ELS_CMD_LOGO) {
6437 logo_data = kmalloc(sizeof(struct lpfc_logo_event), GFP_KERNEL);
6439 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
6440 "0148 Failed to allocate memory "
6441 "for LOGO event\n");
6444 els_data = &logo_data->header;
6446 els_data = kmalloc(sizeof(struct lpfc_els_event_header),
6449 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
6450 "0149 Failed to allocate memory "
6455 els_data->event_type = FC_REG_ELS_EVENT;
6458 els_data->subcategory = LPFC_EVENT_PLOGI_RCV;
6461 els_data->subcategory = LPFC_EVENT_PRLO_RCV;
6464 els_data->subcategory = LPFC_EVENT_ADISC_RCV;
6467 els_data->subcategory = LPFC_EVENT_LOGO_RCV;
6468 /* Copy the WWPN in the LOGO payload */
6469 memcpy(logo_data->logo_wwpn, &payload[2],
6470 sizeof(struct lpfc_name));
6476 memcpy(els_data->wwpn, &ndlp->nlp_portname, sizeof(struct lpfc_name));
6477 memcpy(els_data->wwnn, &ndlp->nlp_nodename, sizeof(struct lpfc_name));
6478 if (*payload == ELS_CMD_LOGO) {
6479 fc_host_post_vendor_event(shost,
6480 fc_get_event_number(),
6481 sizeof(struct lpfc_logo_event),
6486 fc_host_post_vendor_event(shost,
6487 fc_get_event_number(),
6488 sizeof(struct lpfc_els_event_header),
6499 * lpfc_els_unsol_buffer - Process an unsolicited event data buffer
6500 * @phba: pointer to lpfc hba data structure.
6501 * @pring: pointer to a SLI ring.
6502 * @vport: pointer to a host virtual N_Port data structure.
6503 * @elsiocb: pointer to lpfc els command iocb data structure.
6505 * This routine is used for processing the IOCB associated with a unsolicited
6506 * event. It first determines whether there is an existing ndlp that matches
6507 * the DID from the unsolicited IOCB. If not, it will create a new one with
6508 * the DID from the unsolicited IOCB. The ELS command from the unsolicited
6509 * IOCB is then used to invoke the proper routine and to set up proper state
6510 * of the discovery state machine.
6513 lpfc_els_unsol_buffer(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
6514 struct lpfc_vport *vport, struct lpfc_iocbq *elsiocb)
6516 struct Scsi_Host *shost;
6517 struct lpfc_nodelist *ndlp;
6520 uint32_t cmd, did, newnode, rjt_err = 0;
6521 IOCB_t *icmd = &elsiocb->iocb;
6523 if (!vport || !(elsiocb->context2))
6527 payload = ((struct lpfc_dmabuf *)elsiocb->context2)->virt;
6529 if ((phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) == 0)
6530 lpfc_post_buffer(phba, pring, 1);
6532 did = icmd->un.rcvels.remoteID;
6533 if (icmd->ulpStatus) {
6534 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
6535 "RCV Unsol ELS: status:x%x/x%x did:x%x",
6536 icmd->ulpStatus, icmd->un.ulpWord[4], did);
6540 /* Check to see if link went down during discovery */
6541 if (lpfc_els_chk_latt(vport))
6544 /* Ignore traffic received during vport shutdown. */
6545 if (vport->load_flag & FC_UNLOADING)
6548 /* If NPort discovery is delayed drop incoming ELS */
6549 if ((vport->fc_flag & FC_DISC_DELAYED) &&
6550 (cmd != ELS_CMD_PLOGI))
6553 ndlp = lpfc_findnode_did(vport, did);
6555 /* Cannot find existing Fabric ndlp, so allocate a new one */
6556 ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL);
6560 lpfc_nlp_init(vport, ndlp, did);
6561 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
6563 if ((did & Fabric_DID_MASK) == Fabric_DID_MASK)
6564 ndlp->nlp_type |= NLP_FABRIC;
6565 } else if (!NLP_CHK_NODE_ACT(ndlp)) {
6566 ndlp = lpfc_enable_node(vport, ndlp,
6567 NLP_STE_UNUSED_NODE);
6570 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
6572 if ((did & Fabric_DID_MASK) == Fabric_DID_MASK)
6573 ndlp->nlp_type |= NLP_FABRIC;
6574 } else if (ndlp->nlp_state == NLP_STE_UNUSED_NODE) {
6575 /* This is similar to the new node path */
6576 ndlp = lpfc_nlp_get(ndlp);
6579 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
6583 phba->fc_stat.elsRcvFrame++;
6585 elsiocb->context1 = lpfc_nlp_get(ndlp);
6586 elsiocb->vport = vport;
6588 if ((cmd & ELS_CMD_MASK) == ELS_CMD_RSCN) {
6589 cmd &= ELS_CMD_MASK;
6591 /* ELS command <elsCmd> received from NPORT <did> */
6592 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
6593 "0112 ELS command x%x received from NPORT x%x "
6594 "Data: x%x\n", cmd, did, vport->port_state);
6597 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
6598 "RCV PLOGI: did:x%x/ste:x%x flg:x%x",
6599 did, vport->port_state, ndlp->nlp_flag);
6601 phba->fc_stat.elsRcvPLOGI++;
6602 ndlp = lpfc_plogi_confirm_nport(phba, payload, ndlp);
6604 lpfc_send_els_event(vport, ndlp, payload);
6606 /* If Nport discovery is delayed, reject PLOGIs */
6607 if (vport->fc_flag & FC_DISC_DELAYED) {
6608 rjt_err = LSRJT_UNABLE_TPC;
6611 if (vport->port_state < LPFC_DISC_AUTH) {
6612 if (!(phba->pport->fc_flag & FC_PT2PT) ||
6613 (phba->pport->fc_flag & FC_PT2PT_PLOGI)) {
6614 rjt_err = LSRJT_UNABLE_TPC;
6617 /* We get here, and drop thru, if we are PT2PT with
6618 * another NPort and the other side has initiated
6619 * the PLOGI before responding to our FLOGI.
6623 shost = lpfc_shost_from_vport(vport);
6624 spin_lock_irq(shost->host_lock);
6625 ndlp->nlp_flag &= ~NLP_TARGET_REMOVE;
6626 spin_unlock_irq(shost->host_lock);
6628 lpfc_disc_state_machine(vport, ndlp, elsiocb,
6633 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
6634 "RCV FLOGI: did:x%x/ste:x%x flg:x%x",
6635 did, vport->port_state, ndlp->nlp_flag);
6637 phba->fc_stat.elsRcvFLOGI++;
6638 lpfc_els_rcv_flogi(vport, elsiocb, ndlp);
6643 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
6644 "RCV LOGO: did:x%x/ste:x%x flg:x%x",
6645 did, vport->port_state, ndlp->nlp_flag);
6647 phba->fc_stat.elsRcvLOGO++;
6648 lpfc_send_els_event(vport, ndlp, payload);
6649 if (vport->port_state < LPFC_DISC_AUTH) {
6650 rjt_err = LSRJT_UNABLE_TPC;
6653 lpfc_disc_state_machine(vport, ndlp, elsiocb, NLP_EVT_RCV_LOGO);
6656 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
6657 "RCV PRLO: did:x%x/ste:x%x flg:x%x",
6658 did, vport->port_state, ndlp->nlp_flag);
6660 phba->fc_stat.elsRcvPRLO++;
6661 lpfc_send_els_event(vport, ndlp, payload);
6662 if (vport->port_state < LPFC_DISC_AUTH) {
6663 rjt_err = LSRJT_UNABLE_TPC;
6666 lpfc_disc_state_machine(vport, ndlp, elsiocb, NLP_EVT_RCV_PRLO);
6669 phba->fc_stat.elsRcvRSCN++;
6670 lpfc_els_rcv_rscn(vport, elsiocb, ndlp);
6675 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
6676 "RCV ADISC: did:x%x/ste:x%x flg:x%x",
6677 did, vport->port_state, ndlp->nlp_flag);
6679 lpfc_send_els_event(vport, ndlp, payload);
6680 phba->fc_stat.elsRcvADISC++;
6681 if (vport->port_state < LPFC_DISC_AUTH) {
6682 rjt_err = LSRJT_UNABLE_TPC;
6685 lpfc_disc_state_machine(vport, ndlp, elsiocb,
6689 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
6690 "RCV PDISC: did:x%x/ste:x%x flg:x%x",
6691 did, vport->port_state, ndlp->nlp_flag);
6693 phba->fc_stat.elsRcvPDISC++;
6694 if (vport->port_state < LPFC_DISC_AUTH) {
6695 rjt_err = LSRJT_UNABLE_TPC;
6698 lpfc_disc_state_machine(vport, ndlp, elsiocb,
6702 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
6703 "RCV FARPR: did:x%x/ste:x%x flg:x%x",
6704 did, vport->port_state, ndlp->nlp_flag);
6706 phba->fc_stat.elsRcvFARPR++;
6707 lpfc_els_rcv_farpr(vport, elsiocb, ndlp);
6710 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
6711 "RCV FARP: did:x%x/ste:x%x flg:x%x",
6712 did, vport->port_state, ndlp->nlp_flag);
6714 phba->fc_stat.elsRcvFARP++;
6715 lpfc_els_rcv_farp(vport, elsiocb, ndlp);
6718 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
6719 "RCV FAN: did:x%x/ste:x%x flg:x%x",
6720 did, vport->port_state, ndlp->nlp_flag);
6722 phba->fc_stat.elsRcvFAN++;
6723 lpfc_els_rcv_fan(vport, elsiocb, ndlp);
6726 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
6727 "RCV PRLI: did:x%x/ste:x%x flg:x%x",
6728 did, vport->port_state, ndlp->nlp_flag);
6730 phba->fc_stat.elsRcvPRLI++;
6731 if (vport->port_state < LPFC_DISC_AUTH) {
6732 rjt_err = LSRJT_UNABLE_TPC;
6735 lpfc_disc_state_machine(vport, ndlp, elsiocb, NLP_EVT_RCV_PRLI);
6738 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
6739 "RCV LIRR: did:x%x/ste:x%x flg:x%x",
6740 did, vport->port_state, ndlp->nlp_flag);
6742 phba->fc_stat.elsRcvLIRR++;
6743 lpfc_els_rcv_lirr(vport, elsiocb, ndlp);
6748 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
6749 "RCV RLS: did:x%x/ste:x%x flg:x%x",
6750 did, vport->port_state, ndlp->nlp_flag);
6752 phba->fc_stat.elsRcvRLS++;
6753 lpfc_els_rcv_rls(vport, elsiocb, ndlp);
6758 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
6759 "RCV RPS: did:x%x/ste:x%x flg:x%x",
6760 did, vport->port_state, ndlp->nlp_flag);
6762 phba->fc_stat.elsRcvRPS++;
6763 lpfc_els_rcv_rps(vport, elsiocb, ndlp);
6768 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
6769 "RCV RPL: did:x%x/ste:x%x flg:x%x",
6770 did, vport->port_state, ndlp->nlp_flag);
6772 phba->fc_stat.elsRcvRPL++;
6773 lpfc_els_rcv_rpl(vport, elsiocb, ndlp);
6778 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
6779 "RCV RNID: did:x%x/ste:x%x flg:x%x",
6780 did, vport->port_state, ndlp->nlp_flag);
6782 phba->fc_stat.elsRcvRNID++;
6783 lpfc_els_rcv_rnid(vport, elsiocb, ndlp);
6788 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
6789 "RCV RTV: did:x%x/ste:x%x flg:x%x",
6790 did, vport->port_state, ndlp->nlp_flag);
6791 phba->fc_stat.elsRcvRTV++;
6792 lpfc_els_rcv_rtv(vport, elsiocb, ndlp);
6797 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
6798 "RCV RRQ: did:x%x/ste:x%x flg:x%x",
6799 did, vport->port_state, ndlp->nlp_flag);
6801 phba->fc_stat.elsRcvRRQ++;
6802 lpfc_els_rcv_rrq(vport, elsiocb, ndlp);
6807 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
6808 "RCV ECHO: did:x%x/ste:x%x flg:x%x",
6809 did, vport->port_state, ndlp->nlp_flag);
6811 phba->fc_stat.elsRcvECHO++;
6812 lpfc_els_rcv_echo(vport, elsiocb, ndlp);
6817 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
6818 "RCV ELS cmd: cmd:x%x did:x%x/ste:x%x",
6819 cmd, did, vport->port_state);
6821 /* Unsupported ELS command, reject */
6822 rjt_err = LSRJT_CMD_UNSUPPORTED;
6824 /* Unknown ELS command <elsCmd> received from NPORT <did> */
6825 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
6826 "0115 Unknown ELS command x%x "
6827 "received from NPORT x%x\n", cmd, did);
6833 /* check if need to LS_RJT received ELS cmd */
6835 memset(&stat, 0, sizeof(stat));
6836 stat.un.b.lsRjtRsnCode = rjt_err;
6837 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
6838 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, elsiocb, ndlp,
6842 lpfc_nlp_put(elsiocb->context1);
6843 elsiocb->context1 = NULL;
6847 if (vport && !(vport->load_flag & FC_UNLOADING))
6848 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
6849 "0111 Dropping received ELS cmd "
6850 "Data: x%x x%x x%x\n",
6851 icmd->ulpStatus, icmd->un.ulpWord[4], icmd->ulpTimeout);
6852 phba->fc_stat.elsRcvDrop++;
6856 * lpfc_els_unsol_event - Process an unsolicited event from an els sli ring
6857 * @phba: pointer to lpfc hba data structure.
6858 * @pring: pointer to a SLI ring.
6859 * @elsiocb: pointer to lpfc els iocb data structure.
6861 * This routine is used to process an unsolicited event received from a SLI
6862 * (Service Level Interface) ring. The actual processing of the data buffer
6863 * associated with the unsolicited event is done by invoking the routine
6864 * lpfc_els_unsol_buffer() after properly set up the iocb buffer from the
6865 * SLI ring on which the unsolicited event was received.
6868 lpfc_els_unsol_event(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
6869 struct lpfc_iocbq *elsiocb)
6871 struct lpfc_vport *vport = phba->pport;
6872 IOCB_t *icmd = &elsiocb->iocb;
6874 struct lpfc_dmabuf *bdeBuf1 = elsiocb->context2;
6875 struct lpfc_dmabuf *bdeBuf2 = elsiocb->context3;
6877 elsiocb->context1 = NULL;
6878 elsiocb->context2 = NULL;
6879 elsiocb->context3 = NULL;
6881 if (icmd->ulpStatus == IOSTAT_NEED_BUFFER) {
6882 lpfc_sli_hbqbuf_add_hbqs(phba, LPFC_ELS_HBQ);
6883 } else if (icmd->ulpStatus == IOSTAT_LOCAL_REJECT &&
6884 (icmd->un.ulpWord[4] & IOERR_PARAM_MASK) ==
6885 IOERR_RCV_BUFFER_WAITING) {
6886 phba->fc_stat.NoRcvBuf++;
6887 /* Not enough posted buffers; Try posting more buffers */
6888 if (!(phba->sli3_options & LPFC_SLI3_HBQ_ENABLED))
6889 lpfc_post_buffer(phba, pring, 0);
6893 if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
6894 (icmd->ulpCommand == CMD_IOCB_RCV_ELS64_CX ||
6895 icmd->ulpCommand == CMD_IOCB_RCV_SEQ64_CX)) {
6896 if (icmd->unsli3.rcvsli3.vpi == 0xffff)
6897 vport = phba->pport;
6899 vport = lpfc_find_vport_by_vpid(phba,
6900 icmd->unsli3.rcvsli3.vpi);
6903 /* If there are no BDEs associated
6904 * with this IOCB, there is nothing to do.
6906 if (icmd->ulpBdeCount == 0)
6909 /* type of ELS cmd is first 32bit word
6912 if (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) {
6913 elsiocb->context2 = bdeBuf1;
6915 paddr = getPaddr(icmd->un.cont64[0].addrHigh,
6916 icmd->un.cont64[0].addrLow);
6917 elsiocb->context2 = lpfc_sli_ringpostbuf_get(phba, pring,
6921 lpfc_els_unsol_buffer(phba, pring, vport, elsiocb);
6923 * The different unsolicited event handlers would tell us
6924 * if they are done with "mp" by setting context2 to NULL.
6926 if (elsiocb->context2) {
6927 lpfc_in_buf_free(phba, (struct lpfc_dmabuf *)elsiocb->context2);
6928 elsiocb->context2 = NULL;
6931 /* RCV_ELS64_CX provide for 2 BDEs - process 2nd if included */
6932 if ((phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) &&
6933 icmd->ulpBdeCount == 2) {
6934 elsiocb->context2 = bdeBuf2;
6935 lpfc_els_unsol_buffer(phba, pring, vport, elsiocb);
6936 /* free mp if we are done with it */
6937 if (elsiocb->context2) {
6938 lpfc_in_buf_free(phba, elsiocb->context2);
6939 elsiocb->context2 = NULL;
6945 * lpfc_do_scr_ns_plogi - Issue a plogi to the name server for scr
6946 * @phba: pointer to lpfc hba data structure.
6947 * @vport: pointer to a virtual N_Port data structure.
6949 * This routine issues a Port Login (PLOGI) to the Name Server with
6950 * State Change Request (SCR) for a @vport. This routine will create an
6951 * ndlp for the Name Server associated to the @vport if such node does
6952 * not already exist. The PLOGI to Name Server is issued by invoking the
6953 * lpfc_issue_els_plogi() routine. If Fabric-Device Management Interface
6954 * (FDMI) is configured to the @vport, a FDMI node will be created and
6955 * the PLOGI to FDMI is issued by invoking lpfc_issue_els_plogi() routine.
6958 lpfc_do_scr_ns_plogi(struct lpfc_hba *phba, struct lpfc_vport *vport)
6960 struct lpfc_nodelist *ndlp, *ndlp_fdmi;
6961 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
6964 * If lpfc_delay_discovery parameter is set and the clean address
6965 * bit is cleared and fc fabric parameters chenged, delay FC NPort
6968 spin_lock_irq(shost->host_lock);
6969 if (vport->fc_flag & FC_DISC_DELAYED) {
6970 spin_unlock_irq(shost->host_lock);
6971 mod_timer(&vport->delayed_disc_tmo,
6972 jiffies + HZ * phba->fc_ratov);
6975 spin_unlock_irq(shost->host_lock);
6977 ndlp = lpfc_findnode_did(vport, NameServer_DID);
6979 ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL);
6981 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
6982 lpfc_disc_start(vport);
6985 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
6986 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
6987 "0251 NameServer login: no memory\n");
6990 lpfc_nlp_init(vport, ndlp, NameServer_DID);
6991 } else if (!NLP_CHK_NODE_ACT(ndlp)) {
6992 ndlp = lpfc_enable_node(vport, ndlp, NLP_STE_UNUSED_NODE);
6994 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
6995 lpfc_disc_start(vport);
6998 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
6999 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
7000 "0348 NameServer login: node freed\n");
7004 ndlp->nlp_type |= NLP_FABRIC;
7006 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
7008 if (lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0)) {
7009 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
7010 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
7011 "0252 Cannot issue NameServer login\n");
7015 if (vport->cfg_fdmi_on) {
7016 /* If this is the first time, allocate an ndlp and initialize
7017 * it. Otherwise, make sure the node is enabled and then do the
7020 ndlp_fdmi = lpfc_findnode_did(vport, FDMI_DID);
7022 ndlp_fdmi = mempool_alloc(phba->nlp_mem_pool,
7025 lpfc_nlp_init(vport, ndlp_fdmi, FDMI_DID);
7026 ndlp_fdmi->nlp_type |= NLP_FABRIC;
7030 if (!NLP_CHK_NODE_ACT(ndlp_fdmi))
7031 ndlp_fdmi = lpfc_enable_node(vport,
7036 lpfc_nlp_set_state(vport, ndlp_fdmi,
7037 NLP_STE_PLOGI_ISSUE);
7038 lpfc_issue_els_plogi(vport, ndlp_fdmi->nlp_DID, 0);
7044 * lpfc_cmpl_reg_new_vport - Completion callback function to register new vport
7045 * @phba: pointer to lpfc hba data structure.
7046 * @pmb: pointer to the driver internal queue element for mailbox command.
7048 * This routine is the completion callback function to register new vport
7049 * mailbox command. If the new vport mailbox command completes successfully,
7050 * the fabric registration login shall be performed on physical port (the
7051 * new vport created is actually a physical port, with VPI 0) or the port
7052 * login to Name Server for State Change Request (SCR) will be performed
7053 * on virtual port (real virtual port, with VPI greater than 0).
7056 lpfc_cmpl_reg_new_vport(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
7058 struct lpfc_vport *vport = pmb->vport;
7059 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
7060 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2;
7061 MAILBOX_t *mb = &pmb->u.mb;
7064 spin_lock_irq(shost->host_lock);
7065 vport->fc_flag &= ~FC_VPORT_NEEDS_REG_VPI;
7066 spin_unlock_irq(shost->host_lock);
7068 if (mb->mbxStatus) {
7069 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
7070 "0915 Register VPI failed : Status: x%x"
7071 " upd bit: x%x \n", mb->mbxStatus,
7072 mb->un.varRegVpi.upd);
7073 if (phba->sli_rev == LPFC_SLI_REV4 &&
7074 mb->un.varRegVpi.upd)
7075 goto mbox_err_exit ;
7077 switch (mb->mbxStatus) {
7078 case 0x11: /* unsupported feature */
7079 case 0x9603: /* max_vpi exceeded */
7080 case 0x9602: /* Link event since CLEAR_LA */
7081 /* giving up on vport registration */
7082 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
7083 spin_lock_irq(shost->host_lock);
7084 vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
7085 spin_unlock_irq(shost->host_lock);
7086 lpfc_can_disctmo(vport);
7088 /* If reg_vpi fail with invalid VPI status, re-init VPI */
7090 spin_lock_irq(shost->host_lock);
7091 vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
7092 spin_unlock_irq(shost->host_lock);
7093 lpfc_init_vpi(phba, pmb, vport->vpi);
7095 pmb->mbox_cmpl = lpfc_init_vpi_cmpl;
7096 rc = lpfc_sli_issue_mbox(phba, pmb,
7098 if (rc == MBX_NOT_FINISHED) {
7099 lpfc_printf_vlog(vport,
7101 "2732 Failed to issue INIT_VPI"
7102 " mailbox command\n");
7109 /* Try to recover from this error */
7110 if (phba->sli_rev == LPFC_SLI_REV4)
7111 lpfc_sli4_unreg_all_rpis(vport);
7112 lpfc_mbx_unreg_vpi(vport);
7113 spin_lock_irq(shost->host_lock);
7114 vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
7115 spin_unlock_irq(shost->host_lock);
7116 if (vport->port_type == LPFC_PHYSICAL_PORT
7117 && !(vport->fc_flag & FC_LOGO_RCVD_DID_CHNG))
7118 lpfc_issue_init_vfi(vport);
7120 lpfc_initial_fdisc(vport);
7124 spin_lock_irq(shost->host_lock);
7125 vport->vpi_state |= LPFC_VPI_REGISTERED;
7126 spin_unlock_irq(shost->host_lock);
7127 if (vport == phba->pport) {
7128 if (phba->sli_rev < LPFC_SLI_REV4)
7129 lpfc_issue_fabric_reglogin(vport);
7132 * If the physical port is instantiated using
7133 * FDISC, do not start vport discovery.
7135 if (vport->port_state != LPFC_FDISC)
7136 lpfc_start_fdiscs(phba);
7137 lpfc_do_scr_ns_plogi(phba, vport);
7140 lpfc_do_scr_ns_plogi(phba, vport);
7143 /* Now, we decrement the ndlp reference count held for this
7148 mempool_free(pmb, phba->mbox_mem_pool);
7153 * lpfc_register_new_vport - Register a new vport with a HBA
7154 * @phba: pointer to lpfc hba data structure.
7155 * @vport: pointer to a host virtual N_Port data structure.
7156 * @ndlp: pointer to a node-list data structure.
7158 * This routine registers the @vport as a new virtual port with a HBA.
7159 * It is done through a registering vpi mailbox command.
7162 lpfc_register_new_vport(struct lpfc_hba *phba, struct lpfc_vport *vport,
7163 struct lpfc_nodelist *ndlp)
7165 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
7168 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
7170 lpfc_reg_vpi(vport, mbox);
7171 mbox->vport = vport;
7172 mbox->context2 = lpfc_nlp_get(ndlp);
7173 mbox->mbox_cmpl = lpfc_cmpl_reg_new_vport;
7174 if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT)
7175 == MBX_NOT_FINISHED) {
7176 /* mailbox command not success, decrement ndlp
7177 * reference count for this command
7180 mempool_free(mbox, phba->mbox_mem_pool);
7182 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
7183 "0253 Register VPI: Can't send mbox\n");
7187 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
7188 "0254 Register VPI: no memory\n");
7194 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
7195 spin_lock_irq(shost->host_lock);
7196 vport->fc_flag &= ~FC_VPORT_NEEDS_REG_VPI;
7197 spin_unlock_irq(shost->host_lock);
7202 * lpfc_cancel_all_vport_retry_delay_timer - Cancel all vport retry delay timer
7203 * @phba: pointer to lpfc hba data structure.
7205 * This routine cancels the retry delay timers to all the vports.
7208 lpfc_cancel_all_vport_retry_delay_timer(struct lpfc_hba *phba)
7210 struct lpfc_vport **vports;
7211 struct lpfc_nodelist *ndlp;
7212 uint32_t link_state;
7215 /* Treat this failure as linkdown for all vports */
7216 link_state = phba->link_state;
7217 lpfc_linkdown(phba);
7218 phba->link_state = link_state;
7220 vports = lpfc_create_vport_work_array(phba);
7223 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
7224 ndlp = lpfc_findnode_did(vports[i], Fabric_DID);
7226 lpfc_cancel_retry_delay_tmo(vports[i], ndlp);
7227 lpfc_els_flush_cmd(vports[i]);
7229 lpfc_destroy_vport_work_array(phba, vports);
7234 * lpfc_retry_pport_discovery - Start timer to retry FLOGI.
7235 * @phba: pointer to lpfc hba data structure.
7237 * This routine abort all pending discovery commands and
7238 * start a timer to retry FLOGI for the physical port
7242 lpfc_retry_pport_discovery(struct lpfc_hba *phba)
7244 struct lpfc_nodelist *ndlp;
7245 struct Scsi_Host *shost;
7247 /* Cancel the all vports retry delay retry timers */
7248 lpfc_cancel_all_vport_retry_delay_timer(phba);
7250 /* If fabric require FLOGI, then re-instantiate physical login */
7251 ndlp = lpfc_findnode_did(phba->pport, Fabric_DID);
7255 shost = lpfc_shost_from_vport(phba->pport);
7256 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ);
7257 spin_lock_irq(shost->host_lock);
7258 ndlp->nlp_flag |= NLP_DELAY_TMO;
7259 spin_unlock_irq(shost->host_lock);
7260 ndlp->nlp_last_elscmd = ELS_CMD_FLOGI;
7261 phba->pport->port_state = LPFC_FLOGI;
7266 * lpfc_fabric_login_reqd - Check if FLOGI required.
7267 * @phba: pointer to lpfc hba data structure.
7268 * @cmdiocb: pointer to FDISC command iocb.
7269 * @rspiocb: pointer to FDISC response iocb.
7271 * This routine checks if a FLOGI is reguired for FDISC
7275 lpfc_fabric_login_reqd(struct lpfc_hba *phba,
7276 struct lpfc_iocbq *cmdiocb,
7277 struct lpfc_iocbq *rspiocb)
7280 if ((rspiocb->iocb.ulpStatus != IOSTAT_FABRIC_RJT) ||
7281 (rspiocb->iocb.un.ulpWord[4] != RJT_LOGIN_REQUIRED))
7288 * lpfc_cmpl_els_fdisc - Completion function for fdisc iocb command
7289 * @phba: pointer to lpfc hba data structure.
7290 * @cmdiocb: pointer to lpfc command iocb data structure.
7291 * @rspiocb: pointer to lpfc response iocb data structure.
7293 * This routine is the completion callback function to a Fabric Discover
7294 * (FDISC) ELS command. Since all the FDISC ELS commands are issued
7295 * single threaded, each FDISC completion callback function will reset
7296 * the discovery timer for all vports such that the timers will not get
7297 * unnecessary timeout. The function checks the FDISC IOCB status. If error
7298 * detected, the vport will be set to FC_VPORT_FAILED state. Otherwise,the
7299 * vport will set to FC_VPORT_ACTIVE state. It then checks whether the DID
7300 * assigned to the vport has been changed with the completion of the FDISC
7301 * command. If so, both RPI (Remote Port Index) and VPI (Virtual Port Index)
7302 * are unregistered from the HBA, and then the lpfc_register_new_vport()
7303 * routine is invoked to register new vport with the HBA. Otherwise, the
7304 * lpfc_do_scr_ns_plogi() routine is invoked to issue a PLOGI to the Name
7305 * Server for State Change Request (SCR).
7308 lpfc_cmpl_els_fdisc(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
7309 struct lpfc_iocbq *rspiocb)
7311 struct lpfc_vport *vport = cmdiocb->vport;
7312 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
7313 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) cmdiocb->context1;
7314 struct lpfc_nodelist *np;
7315 struct lpfc_nodelist *next_np;
7316 IOCB_t *irsp = &rspiocb->iocb;
7317 struct lpfc_iocbq *piocb;
7318 struct lpfc_dmabuf *pcmd = cmdiocb->context2, *prsp;
7319 struct serv_parm *sp;
7320 uint8_t fabric_param_changed;
7322 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
7323 "0123 FDISC completes. x%x/x%x prevDID: x%x\n",
7324 irsp->ulpStatus, irsp->un.ulpWord[4],
7326 /* Since all FDISCs are being single threaded, we
7327 * must reset the discovery timer for ALL vports
7328 * waiting to send FDISC when one completes.
7330 list_for_each_entry(piocb, &phba->fabric_iocb_list, list) {
7331 lpfc_set_disctmo(piocb->vport);
7334 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
7335 "FDISC cmpl: status:x%x/x%x prevdid:x%x",
7336 irsp->ulpStatus, irsp->un.ulpWord[4], vport->fc_prevDID);
7338 if (irsp->ulpStatus) {
7340 if (lpfc_fabric_login_reqd(phba, cmdiocb, rspiocb)) {
7341 lpfc_retry_pport_discovery(phba);
7345 /* Check for retry */
7346 if (lpfc_els_retry(phba, cmdiocb, rspiocb))
7349 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
7350 "0126 FDISC failed. (x%x/x%x)\n",
7351 irsp->ulpStatus, irsp->un.ulpWord[4]);
7354 spin_lock_irq(shost->host_lock);
7355 vport->fc_flag &= ~FC_VPORT_CVL_RCVD;
7356 vport->fc_flag &= ~FC_VPORT_LOGO_RCVD;
7357 vport->fc_flag |= FC_FABRIC;
7358 if (vport->phba->fc_topology == LPFC_TOPOLOGY_LOOP)
7359 vport->fc_flag |= FC_PUBLIC_LOOP;
7360 spin_unlock_irq(shost->host_lock);
7362 vport->fc_myDID = irsp->un.ulpWord[4] & Mask_DID;
7363 lpfc_vport_set_state(vport, FC_VPORT_ACTIVE);
7364 prsp = list_get_first(&pcmd->list, struct lpfc_dmabuf, list);
7365 sp = prsp->virt + sizeof(uint32_t);
7366 fabric_param_changed = lpfc_check_clean_addr_bit(vport, sp);
7367 memcpy(&vport->fabric_portname, &sp->portName,
7368 sizeof(struct lpfc_name));
7369 memcpy(&vport->fabric_nodename, &sp->nodeName,
7370 sizeof(struct lpfc_name));
7371 if (fabric_param_changed &&
7372 !(vport->fc_flag & FC_VPORT_NEEDS_REG_VPI)) {
7373 /* If our NportID changed, we need to ensure all
7374 * remaining NPORTs get unreg_login'ed so we can
7377 list_for_each_entry_safe(np, next_np,
7378 &vport->fc_nodes, nlp_listp) {
7379 if (!NLP_CHK_NODE_ACT(ndlp) ||
7380 (np->nlp_state != NLP_STE_NPR_NODE) ||
7381 !(np->nlp_flag & NLP_NPR_ADISC))
7383 spin_lock_irq(shost->host_lock);
7384 np->nlp_flag &= ~NLP_NPR_ADISC;
7385 spin_unlock_irq(shost->host_lock);
7386 lpfc_unreg_rpi(vport, np);
7388 lpfc_cleanup_pending_mbox(vport);
7390 if (phba->sli_rev == LPFC_SLI_REV4)
7391 lpfc_sli4_unreg_all_rpis(vport);
7393 lpfc_mbx_unreg_vpi(vport);
7394 spin_lock_irq(shost->host_lock);
7395 vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
7396 if (phba->sli_rev == LPFC_SLI_REV4)
7397 vport->fc_flag |= FC_VPORT_NEEDS_INIT_VPI;
7399 vport->fc_flag |= FC_LOGO_RCVD_DID_CHNG;
7400 spin_unlock_irq(shost->host_lock);
7401 } else if ((phba->sli_rev == LPFC_SLI_REV4) &&
7402 !(vport->fc_flag & FC_VPORT_NEEDS_REG_VPI)) {
7404 * Driver needs to re-reg VPI in order for f/w
7405 * to update the MAC address.
7407 lpfc_register_new_vport(phba, vport, ndlp);
7411 if (vport->fc_flag & FC_VPORT_NEEDS_INIT_VPI)
7412 lpfc_issue_init_vpi(vport);
7413 else if (vport->fc_flag & FC_VPORT_NEEDS_REG_VPI)
7414 lpfc_register_new_vport(phba, vport, ndlp);
7416 lpfc_do_scr_ns_plogi(phba, vport);
7419 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
7420 /* Cancel discovery timer */
7421 lpfc_can_disctmo(vport);
7424 lpfc_els_free_iocb(phba, cmdiocb);
7428 * lpfc_issue_els_fdisc - Issue a fdisc iocb command
7429 * @vport: pointer to a virtual N_Port data structure.
7430 * @ndlp: pointer to a node-list data structure.
7431 * @retry: number of retries to the command IOCB.
7433 * This routine prepares and issues a Fabric Discover (FDISC) IOCB to
7434 * a remote node (@ndlp) off a @vport. It uses the lpfc_issue_fabric_iocb()
7435 * routine to issue the IOCB, which makes sure only one outstanding fabric
7436 * IOCB will be sent off HBA at any given time.
7438 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
7439 * will be incremented by 1 for holding the ndlp and the reference to ndlp
7440 * will be stored into the context1 field of the IOCB for the completion
7441 * callback function to the FDISC ELS command.
7444 * 0 - Successfully issued fdisc iocb command
7445 * 1 - Failed to issue fdisc iocb command
7448 lpfc_issue_els_fdisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
7451 struct lpfc_hba *phba = vport->phba;
7453 struct lpfc_iocbq *elsiocb;
7454 struct serv_parm *sp;
7457 int did = ndlp->nlp_DID;
7460 vport->port_state = LPFC_FDISC;
7461 vport->fc_myDID = 0;
7462 cmdsize = (sizeof(uint32_t) + sizeof(struct serv_parm));
7463 elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp, did,
7466 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
7467 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
7468 "0255 Issue FDISC: no IOCB\n");
7472 icmd = &elsiocb->iocb;
7473 icmd->un.elsreq64.myID = 0;
7474 icmd->un.elsreq64.fl = 1;
7477 * SLI3 ports require a different context type value than SLI4.
7478 * Catch SLI3 ports here and override the prep.
7480 if (phba->sli_rev == LPFC_SLI_REV3) {
7485 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
7486 *((uint32_t *) (pcmd)) = ELS_CMD_FDISC;
7487 pcmd += sizeof(uint32_t); /* CSP Word 1 */
7488 memcpy(pcmd, &vport->phba->pport->fc_sparam, sizeof(struct serv_parm));
7489 sp = (struct serv_parm *) pcmd;
7490 /* Setup CSPs accordingly for Fabric */
7491 sp->cmn.e_d_tov = 0;
7492 sp->cmn.w2.r_a_tov = 0;
7493 sp->cmn.virtual_fabric_support = 0;
7494 sp->cls1.classValid = 0;
7495 sp->cls2.seqDelivery = 1;
7496 sp->cls3.seqDelivery = 1;
7498 pcmd += sizeof(uint32_t); /* CSP Word 2 */
7499 pcmd += sizeof(uint32_t); /* CSP Word 3 */
7500 pcmd += sizeof(uint32_t); /* CSP Word 4 */
7501 pcmd += sizeof(uint32_t); /* Port Name */
7502 memcpy(pcmd, &vport->fc_portname, 8);
7503 pcmd += sizeof(uint32_t); /* Node Name */
7504 pcmd += sizeof(uint32_t); /* Node Name */
7505 memcpy(pcmd, &vport->fc_nodename, 8);
7507 lpfc_set_disctmo(vport);
7509 phba->fc_stat.elsXmitFDISC++;
7510 elsiocb->iocb_cmpl = lpfc_cmpl_els_fdisc;
7512 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
7513 "Issue FDISC: did:x%x",
7516 rc = lpfc_issue_fabric_iocb(phba, elsiocb);
7517 if (rc == IOCB_ERROR) {
7518 lpfc_els_free_iocb(phba, elsiocb);
7519 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
7520 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
7521 "0256 Issue FDISC: Cannot send IOCB\n");
7524 lpfc_vport_set_state(vport, FC_VPORT_INITIALIZING);
7529 * lpfc_cmpl_els_npiv_logo - Completion function with vport logo
7530 * @phba: pointer to lpfc hba data structure.
7531 * @cmdiocb: pointer to lpfc command iocb data structure.
7532 * @rspiocb: pointer to lpfc response iocb data structure.
7534 * This routine is the completion callback function to the issuing of a LOGO
7535 * ELS command off a vport. It frees the command IOCB and then decrement the
7536 * reference count held on ndlp for this completion function, indicating that
7537 * the reference to the ndlp is no long needed. Note that the
7538 * lpfc_els_free_iocb() routine decrements the ndlp reference held for this
7539 * callback function and an additional explicit ndlp reference decrementation
7540 * will trigger the actual release of the ndlp.
7543 lpfc_cmpl_els_npiv_logo(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
7544 struct lpfc_iocbq *rspiocb)
7546 struct lpfc_vport *vport = cmdiocb->vport;
7548 struct lpfc_nodelist *ndlp;
7549 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
7551 ndlp = (struct lpfc_nodelist *)cmdiocb->context1;
7552 irsp = &rspiocb->iocb;
7553 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
7554 "LOGO npiv cmpl: status:x%x/x%x did:x%x",
7555 irsp->ulpStatus, irsp->un.ulpWord[4], irsp->un.rcvels.remoteID);
7557 lpfc_els_free_iocb(phba, cmdiocb);
7558 vport->unreg_vpi_cmpl = VPORT_ERROR;
7560 /* Trigger the release of the ndlp after logo */
7563 /* NPIV LOGO completes to NPort <nlp_DID> */
7564 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
7565 "2928 NPIV LOGO completes to NPort x%x "
7566 "Data: x%x x%x x%x x%x\n",
7567 ndlp->nlp_DID, irsp->ulpStatus, irsp->un.ulpWord[4],
7568 irsp->ulpTimeout, vport->num_disc_nodes);
7570 if (irsp->ulpStatus == IOSTAT_SUCCESS) {
7571 spin_lock_irq(shost->host_lock);
7572 vport->fc_flag &= ~FC_FABRIC;
7573 spin_unlock_irq(shost->host_lock);
7578 * lpfc_issue_els_npiv_logo - Issue a logo off a vport
7579 * @vport: pointer to a virtual N_Port data structure.
7580 * @ndlp: pointer to a node-list data structure.
7582 * This routine issues a LOGO ELS command to an @ndlp off a @vport.
7584 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
7585 * will be incremented by 1 for holding the ndlp and the reference to ndlp
7586 * will be stored into the context1 field of the IOCB for the completion
7587 * callback function to the LOGO ELS command.
7590 * 0 - Successfully issued logo off the @vport
7591 * 1 - Failed to issue logo off the @vport
7594 lpfc_issue_els_npiv_logo(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
7596 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
7597 struct lpfc_hba *phba = vport->phba;
7599 struct lpfc_iocbq *elsiocb;
7603 cmdsize = 2 * sizeof(uint32_t) + sizeof(struct lpfc_name);
7604 elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, 0, ndlp, ndlp->nlp_DID,
7609 icmd = &elsiocb->iocb;
7610 pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
7611 *((uint32_t *) (pcmd)) = ELS_CMD_LOGO;
7612 pcmd += sizeof(uint32_t);
7614 /* Fill in LOGO payload */
7615 *((uint32_t *) (pcmd)) = be32_to_cpu(vport->fc_myDID);
7616 pcmd += sizeof(uint32_t);
7617 memcpy(pcmd, &vport->fc_portname, sizeof(struct lpfc_name));
7619 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
7620 "Issue LOGO npiv did:x%x flg:x%x",
7621 ndlp->nlp_DID, ndlp->nlp_flag, 0);
7623 elsiocb->iocb_cmpl = lpfc_cmpl_els_npiv_logo;
7624 spin_lock_irq(shost->host_lock);
7625 ndlp->nlp_flag |= NLP_LOGO_SND;
7626 spin_unlock_irq(shost->host_lock);
7627 if (lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0) ==
7629 spin_lock_irq(shost->host_lock);
7630 ndlp->nlp_flag &= ~NLP_LOGO_SND;
7631 spin_unlock_irq(shost->host_lock);
7632 lpfc_els_free_iocb(phba, elsiocb);
7639 * lpfc_fabric_block_timeout - Handler function to the fabric block timer
7640 * @ptr: holder for the timer function associated data.
7642 * This routine is invoked by the fabric iocb block timer after
7643 * timeout. It posts the fabric iocb block timeout event by setting the
7644 * WORKER_FABRIC_BLOCK_TMO bit to work port event bitmap and then invokes
7645 * lpfc_worker_wake_up() routine to wake up the worker thread. It is for
7646 * the worker thread to invoke the lpfc_unblock_fabric_iocbs() on the
7647 * posted event WORKER_FABRIC_BLOCK_TMO.
7650 lpfc_fabric_block_timeout(unsigned long ptr)
7652 struct lpfc_hba *phba = (struct lpfc_hba *) ptr;
7653 unsigned long iflags;
7654 uint32_t tmo_posted;
7656 spin_lock_irqsave(&phba->pport->work_port_lock, iflags);
7657 tmo_posted = phba->pport->work_port_events & WORKER_FABRIC_BLOCK_TMO;
7659 phba->pport->work_port_events |= WORKER_FABRIC_BLOCK_TMO;
7660 spin_unlock_irqrestore(&phba->pport->work_port_lock, iflags);
7663 lpfc_worker_wake_up(phba);
7668 * lpfc_resume_fabric_iocbs - Issue a fabric iocb from driver internal list
7669 * @phba: pointer to lpfc hba data structure.
7671 * This routine issues one fabric iocb from the driver internal list to
7672 * the HBA. It first checks whether it's ready to issue one fabric iocb to
7673 * the HBA (whether there is no outstanding fabric iocb). If so, it shall
7674 * remove one pending fabric iocb from the driver internal list and invokes
7675 * lpfc_sli_issue_iocb() routine to send the fabric iocb to the HBA.
7678 lpfc_resume_fabric_iocbs(struct lpfc_hba *phba)
7680 struct lpfc_iocbq *iocb;
7681 unsigned long iflags;
7687 spin_lock_irqsave(&phba->hbalock, iflags);
7688 /* Post any pending iocb to the SLI layer */
7689 if (atomic_read(&phba->fabric_iocb_count) == 0) {
7690 list_remove_head(&phba->fabric_iocb_list, iocb, typeof(*iocb),
7693 /* Increment fabric iocb count to hold the position */
7694 atomic_inc(&phba->fabric_iocb_count);
7696 spin_unlock_irqrestore(&phba->hbalock, iflags);
7698 iocb->fabric_iocb_cmpl = iocb->iocb_cmpl;
7699 iocb->iocb_cmpl = lpfc_cmpl_fabric_iocb;
7700 iocb->iocb_flag |= LPFC_IO_FABRIC;
7702 lpfc_debugfs_disc_trc(iocb->vport, LPFC_DISC_TRC_ELS_CMD,
7703 "Fabric sched1: ste:x%x",
7704 iocb->vport->port_state, 0, 0);
7706 ret = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, iocb, 0);
7708 if (ret == IOCB_ERROR) {
7709 iocb->iocb_cmpl = iocb->fabric_iocb_cmpl;
7710 iocb->fabric_iocb_cmpl = NULL;
7711 iocb->iocb_flag &= ~LPFC_IO_FABRIC;
7713 cmd->ulpStatus = IOSTAT_LOCAL_REJECT;
7714 cmd->un.ulpWord[4] = IOERR_SLI_ABORTED;
7715 iocb->iocb_cmpl(phba, iocb, iocb);
7717 atomic_dec(&phba->fabric_iocb_count);
7726 * lpfc_unblock_fabric_iocbs - Unblock issuing fabric iocb command
7727 * @phba: pointer to lpfc hba data structure.
7729 * This routine unblocks the issuing fabric iocb command. The function
7730 * will clear the fabric iocb block bit and then invoke the routine
7731 * lpfc_resume_fabric_iocbs() to issue one of the pending fabric iocb
7732 * from the driver internal fabric iocb list.
7735 lpfc_unblock_fabric_iocbs(struct lpfc_hba *phba)
7737 clear_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags);
7739 lpfc_resume_fabric_iocbs(phba);
7744 * lpfc_block_fabric_iocbs - Block issuing fabric iocb command
7745 * @phba: pointer to lpfc hba data structure.
7747 * This routine blocks the issuing fabric iocb for a specified amount of
7748 * time (currently 100 ms). This is done by set the fabric iocb block bit
7749 * and set up a timeout timer for 100ms. When the block bit is set, no more
7750 * fabric iocb will be issued out of the HBA.
7753 lpfc_block_fabric_iocbs(struct lpfc_hba *phba)
7757 blocked = test_and_set_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags);
7758 /* Start a timer to unblock fabric iocbs after 100ms */
7760 mod_timer(&phba->fabric_block_timer, jiffies + HZ/10 );
7766 * lpfc_cmpl_fabric_iocb - Completion callback function for fabric iocb
7767 * @phba: pointer to lpfc hba data structure.
7768 * @cmdiocb: pointer to lpfc command iocb data structure.
7769 * @rspiocb: pointer to lpfc response iocb data structure.
7771 * This routine is the callback function that is put to the fabric iocb's
7772 * callback function pointer (iocb->iocb_cmpl). The original iocb's callback
7773 * function pointer has been stored in iocb->fabric_iocb_cmpl. This callback
7774 * function first restores and invokes the original iocb's callback function
7775 * and then invokes the lpfc_resume_fabric_iocbs() routine to issue the next
7776 * fabric bound iocb from the driver internal fabric iocb list onto the wire.
7779 lpfc_cmpl_fabric_iocb(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
7780 struct lpfc_iocbq *rspiocb)
7784 if ((cmdiocb->iocb_flag & LPFC_IO_FABRIC) != LPFC_IO_FABRIC)
7787 switch (rspiocb->iocb.ulpStatus) {
7788 case IOSTAT_NPORT_RJT:
7789 case IOSTAT_FABRIC_RJT:
7790 if (rspiocb->iocb.un.ulpWord[4] & RJT_UNAVAIL_TEMP) {
7791 lpfc_block_fabric_iocbs(phba);
7795 case IOSTAT_NPORT_BSY:
7796 case IOSTAT_FABRIC_BSY:
7797 lpfc_block_fabric_iocbs(phba);
7801 stat.un.lsRjtError =
7802 be32_to_cpu(rspiocb->iocb.un.ulpWord[4]);
7803 if ((stat.un.b.lsRjtRsnCode == LSRJT_UNABLE_TPC) ||
7804 (stat.un.b.lsRjtRsnCode == LSRJT_LOGICAL_BSY))
7805 lpfc_block_fabric_iocbs(phba);
7809 if (atomic_read(&phba->fabric_iocb_count) == 0)
7812 cmdiocb->iocb_cmpl = cmdiocb->fabric_iocb_cmpl;
7813 cmdiocb->fabric_iocb_cmpl = NULL;
7814 cmdiocb->iocb_flag &= ~LPFC_IO_FABRIC;
7815 cmdiocb->iocb_cmpl(phba, cmdiocb, rspiocb);
7817 atomic_dec(&phba->fabric_iocb_count);
7818 if (!test_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags)) {
7819 /* Post any pending iocbs to HBA */
7820 lpfc_resume_fabric_iocbs(phba);
7825 * lpfc_issue_fabric_iocb - Issue a fabric iocb command
7826 * @phba: pointer to lpfc hba data structure.
7827 * @iocb: pointer to lpfc command iocb data structure.
7829 * This routine is used as the top-level API for issuing a fabric iocb command
7830 * such as FLOGI and FDISC. To accommodate certain switch fabric, this driver
7831 * function makes sure that only one fabric bound iocb will be outstanding at
7832 * any given time. As such, this function will first check to see whether there
7833 * is already an outstanding fabric iocb on the wire. If so, it will put the
7834 * newly issued iocb onto the driver internal fabric iocb list, waiting to be
7835 * issued later. Otherwise, it will issue the iocb on the wire and update the
7836 * fabric iocb count it indicate that there is one fabric iocb on the wire.
7838 * Note, this implementation has a potential sending out fabric IOCBs out of
7839 * order. The problem is caused by the construction of the "ready" boolen does
7840 * not include the condition that the internal fabric IOCB list is empty. As
7841 * such, it is possible a fabric IOCB issued by this routine might be "jump"
7842 * ahead of the fabric IOCBs in the internal list.
7845 * IOCB_SUCCESS - either fabric iocb put on the list or issued successfully
7846 * IOCB_ERROR - failed to issue fabric iocb
7849 lpfc_issue_fabric_iocb(struct lpfc_hba *phba, struct lpfc_iocbq *iocb)
7851 unsigned long iflags;
7855 if (atomic_read(&phba->fabric_iocb_count) > 1)
7858 spin_lock_irqsave(&phba->hbalock, iflags);
7859 ready = atomic_read(&phba->fabric_iocb_count) == 0 &&
7860 !test_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags);
7863 /* Increment fabric iocb count to hold the position */
7864 atomic_inc(&phba->fabric_iocb_count);
7865 spin_unlock_irqrestore(&phba->hbalock, iflags);
7867 iocb->fabric_iocb_cmpl = iocb->iocb_cmpl;
7868 iocb->iocb_cmpl = lpfc_cmpl_fabric_iocb;
7869 iocb->iocb_flag |= LPFC_IO_FABRIC;
7871 lpfc_debugfs_disc_trc(iocb->vport, LPFC_DISC_TRC_ELS_CMD,
7872 "Fabric sched2: ste:x%x",
7873 iocb->vport->port_state, 0, 0);
7875 ret = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, iocb, 0);
7877 if (ret == IOCB_ERROR) {
7878 iocb->iocb_cmpl = iocb->fabric_iocb_cmpl;
7879 iocb->fabric_iocb_cmpl = NULL;
7880 iocb->iocb_flag &= ~LPFC_IO_FABRIC;
7881 atomic_dec(&phba->fabric_iocb_count);
7884 spin_lock_irqsave(&phba->hbalock, iflags);
7885 list_add_tail(&iocb->list, &phba->fabric_iocb_list);
7886 spin_unlock_irqrestore(&phba->hbalock, iflags);
7893 * lpfc_fabric_abort_vport - Abort a vport's iocbs from driver fabric iocb list
7894 * @vport: pointer to a virtual N_Port data structure.
7896 * This routine aborts all the IOCBs associated with a @vport from the
7897 * driver internal fabric IOCB list. The list contains fabric IOCBs to be
7898 * issued to the ELS IOCB ring. This abort function walks the fabric IOCB
7899 * list, removes each IOCB associated with the @vport off the list, set the
7900 * status feild to IOSTAT_LOCAL_REJECT, and invokes the callback function
7901 * associated with the IOCB.
7903 static void lpfc_fabric_abort_vport(struct lpfc_vport *vport)
7905 LIST_HEAD(completions);
7906 struct lpfc_hba *phba = vport->phba;
7907 struct lpfc_iocbq *tmp_iocb, *piocb;
7909 spin_lock_irq(&phba->hbalock);
7910 list_for_each_entry_safe(piocb, tmp_iocb, &phba->fabric_iocb_list,
7913 if (piocb->vport != vport)
7916 list_move_tail(&piocb->list, &completions);
7918 spin_unlock_irq(&phba->hbalock);
7920 /* Cancel all the IOCBs from the completions list */
7921 lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
7926 * lpfc_fabric_abort_nport - Abort a ndlp's iocbs from driver fabric iocb list
7927 * @ndlp: pointer to a node-list data structure.
7929 * This routine aborts all the IOCBs associated with an @ndlp from the
7930 * driver internal fabric IOCB list. The list contains fabric IOCBs to be
7931 * issued to the ELS IOCB ring. This abort function walks the fabric IOCB
7932 * list, removes each IOCB associated with the @ndlp off the list, set the
7933 * status feild to IOSTAT_LOCAL_REJECT, and invokes the callback function
7934 * associated with the IOCB.
7936 void lpfc_fabric_abort_nport(struct lpfc_nodelist *ndlp)
7938 LIST_HEAD(completions);
7939 struct lpfc_hba *phba = ndlp->phba;
7940 struct lpfc_iocbq *tmp_iocb, *piocb;
7941 struct lpfc_sli_ring *pring = &phba->sli.ring[LPFC_ELS_RING];
7943 spin_lock_irq(&phba->hbalock);
7944 list_for_each_entry_safe(piocb, tmp_iocb, &phba->fabric_iocb_list,
7946 if ((lpfc_check_sli_ndlp(phba, pring, piocb, ndlp))) {
7948 list_move_tail(&piocb->list, &completions);
7951 spin_unlock_irq(&phba->hbalock);
7953 /* Cancel all the IOCBs from the completions list */
7954 lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
7959 * lpfc_fabric_abort_hba - Abort all iocbs on driver fabric iocb list
7960 * @phba: pointer to lpfc hba data structure.
7962 * This routine aborts all the IOCBs currently on the driver internal
7963 * fabric IOCB list. The list contains fabric IOCBs to be issued to the ELS
7964 * IOCB ring. This function takes the entire IOCB list off the fabric IOCB
7965 * list, removes IOCBs off the list, set the status feild to
7966 * IOSTAT_LOCAL_REJECT, and invokes the callback function associated with
7969 void lpfc_fabric_abort_hba(struct lpfc_hba *phba)
7971 LIST_HEAD(completions);
7973 spin_lock_irq(&phba->hbalock);
7974 list_splice_init(&phba->fabric_iocb_list, &completions);
7975 spin_unlock_irq(&phba->hbalock);
7977 /* Cancel all the IOCBs from the completions list */
7978 lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
7983 * lpfc_sli4_vport_delete_els_xri_aborted -Remove all ndlp references for vport
7984 * @vport: pointer to lpfc vport data structure.
7986 * This routine is invoked by the vport cleanup for deletions and the cleanup
7987 * for an ndlp on removal.
7990 lpfc_sli4_vport_delete_els_xri_aborted(struct lpfc_vport *vport)
7992 struct lpfc_hba *phba = vport->phba;
7993 struct lpfc_sglq *sglq_entry = NULL, *sglq_next = NULL;
7994 unsigned long iflag = 0;
7996 spin_lock_irqsave(&phba->hbalock, iflag);
7997 spin_lock(&phba->sli4_hba.abts_sgl_list_lock);
7998 list_for_each_entry_safe(sglq_entry, sglq_next,
7999 &phba->sli4_hba.lpfc_abts_els_sgl_list, list) {
8000 if (sglq_entry->ndlp && sglq_entry->ndlp->vport == vport)
8001 sglq_entry->ndlp = NULL;
8003 spin_unlock(&phba->sli4_hba.abts_sgl_list_lock);
8004 spin_unlock_irqrestore(&phba->hbalock, iflag);
8009 * lpfc_sli4_els_xri_aborted - Slow-path process of els xri abort
8010 * @phba: pointer to lpfc hba data structure.
8011 * @axri: pointer to the els xri abort wcqe structure.
8013 * This routine is invoked by the worker thread to process a SLI4 slow-path
8017 lpfc_sli4_els_xri_aborted(struct lpfc_hba *phba,
8018 struct sli4_wcqe_xri_aborted *axri)
8020 uint16_t xri = bf_get(lpfc_wcqe_xa_xri, axri);
8021 uint16_t rxid = bf_get(lpfc_wcqe_xa_remote_xid, axri);
8024 struct lpfc_sglq *sglq_entry = NULL, *sglq_next = NULL;
8025 unsigned long iflag = 0;
8026 struct lpfc_nodelist *ndlp;
8027 struct lpfc_sli_ring *pring = &phba->sli.ring[LPFC_ELS_RING];
8029 spin_lock_irqsave(&phba->hbalock, iflag);
8030 spin_lock(&phba->sli4_hba.abts_sgl_list_lock);
8031 list_for_each_entry_safe(sglq_entry, sglq_next,
8032 &phba->sli4_hba.lpfc_abts_els_sgl_list, list) {
8033 if (sglq_entry->sli4_xritag == xri) {
8034 list_del(&sglq_entry->list);
8035 ndlp = sglq_entry->ndlp;
8036 sglq_entry->ndlp = NULL;
8037 list_add_tail(&sglq_entry->list,
8038 &phba->sli4_hba.lpfc_sgl_list);
8039 sglq_entry->state = SGL_FREED;
8040 spin_unlock(&phba->sli4_hba.abts_sgl_list_lock);
8041 spin_unlock_irqrestore(&phba->hbalock, iflag);
8042 lpfc_set_rrq_active(phba, ndlp,
8043 sglq_entry->sli4_lxritag,
8046 /* Check if TXQ queue needs to be serviced */
8048 lpfc_worker_wake_up(phba);
8052 spin_unlock(&phba->sli4_hba.abts_sgl_list_lock);
8053 lxri = lpfc_sli4_xri_inrange(phba, xri);
8054 if (lxri == NO_XRI) {
8055 spin_unlock_irqrestore(&phba->hbalock, iflag);
8058 sglq_entry = __lpfc_get_active_sglq(phba, lxri);
8059 if (!sglq_entry || (sglq_entry->sli4_xritag != xri)) {
8060 spin_unlock_irqrestore(&phba->hbalock, iflag);
8063 sglq_entry->state = SGL_XRI_ABORTED;
8064 spin_unlock_irqrestore(&phba->hbalock, iflag);
8068 /* lpfc_sli_abts_recover_port - Recover a port that failed a BLS_ABORT req.
8069 * @vport: pointer to virtual port object.
8070 * @ndlp: nodelist pointer for the impacted node.
8072 * The driver calls this routine in response to an SLI4 XRI ABORT CQE
8073 * or an SLI3 ASYNC_STATUS_CN event from the port. For either event,
8074 * the driver is required to send a LOGO to the remote node before it
8075 * attempts to recover its login to the remote node.
8078 lpfc_sli_abts_recover_port(struct lpfc_vport *vport,
8079 struct lpfc_nodelist *ndlp)
8081 struct Scsi_Host *shost;
8082 struct lpfc_hba *phba;
8083 unsigned long flags = 0;
8085 shost = lpfc_shost_from_vport(vport);
8087 if (ndlp->nlp_state != NLP_STE_MAPPED_NODE) {
8088 lpfc_printf_log(phba, KERN_INFO,
8089 LOG_SLI, "3093 No rport recovery needed. "
8090 "rport in state 0x%x\n", ndlp->nlp_state);
8093 lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
8094 "3094 Start rport recovery on shost id 0x%x "
8095 "fc_id 0x%06x vpi 0x%x rpi 0x%x state 0x%x "
8097 shost->host_no, ndlp->nlp_DID,
8098 vport->vpi, ndlp->nlp_rpi, ndlp->nlp_state,
8101 * The rport is not responding. Remove the FCP-2 flag to prevent
8102 * an ADISC in the follow-up recovery code.
8104 spin_lock_irqsave(shost->host_lock, flags);
8105 ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE;
8106 spin_unlock_irqrestore(shost->host_lock, flags);
8107 lpfc_issue_els_logo(vport, ndlp, 0);
8108 lpfc_nlp_set_state(vport, ndlp, NLP_STE_LOGO_ISSUE);