OSCL-LXR linux-6.0.1/​drivers/​scsi/​lpfc/​lpfc_els.c	Source navigation Diff markup Identifier search General search
	Version: linux-6.0.1 spark-3.0.0 hadoop-3.2.0-src hadoop-3.3.0-src spark-2.4.7 linux-4.15.13 hadoop-2.7.4-src Revert   Change

 /*******************************************************************
  * This file is part of the Emulex Linux Device Driver for         *
  * Fibre Channel Host Bus Adapters.                                *
  * Copyright (C) 2017-2022 Broadcom. All Rights Reserved. The term *
  * “Broadcom” refers to Broadcom Inc. and/or its subsidiaries.     *
  * Copyright (C) 2004-2016 Emulex.  All rights reserved.           *
  * EMULEX and SLI are trademarks of Emulex.                        *
  * www.broadcom.com                                                *
  * Portions Copyright (C) 2004-2005 Christoph Hellwig              *
  *                                                                 *
  * This program is free software; you can redistribute it and/or   *
  * modify it under the terms of version 2 of the GNU General       *
  * Public License as published by the Free Software Foundation.    *
  * This program is distributed in the hope that it will be useful. *
  * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND          *
  * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY,  *
  * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE      *
  * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *
  * TO BE LEGALLY INVALID.  See the GNU General Public License for  *
  * more details, a copy of which can be found in the file COPYING  *
  * included with this package.                                     *
  *******************************************************************/
 /* See Fibre Channel protocol T11 FC-LS for details */
 #include <linux/blkdev.h>
 #include <linux/pci.h>
 #include <linux/slab.h>
 #include <linux/interrupt.h>
 #include <linux/delay.h>
 
 #include <scsi/scsi.h>
 #include <scsi/scsi_device.h>
 #include <scsi/scsi_host.h>
 #include <scsi/scsi_transport_fc.h>
 #include <uapi/scsi/fc/fc_fs.h>
 #include <uapi/scsi/fc/fc_els.h>
 
 #include "lpfc_hw4.h"
 #include "lpfc_hw.h"
 #include "lpfc_sli.h"
 #include "lpfc_sli4.h"
 #include "lpfc_nl.h"
 #include "lpfc_disc.h"
 #include "lpfc_scsi.h"
 #include "lpfc.h"
 #include "lpfc_logmsg.h"
 #include "lpfc_crtn.h"
 #include "lpfc_vport.h"
 #include "lpfc_debugfs.h"
 
 static int lpfc_els_retry(struct lpfc_hba *, struct lpfc_iocbq *,
               struct lpfc_iocbq *);
 static void lpfc_cmpl_fabric_iocb(struct lpfc_hba *, struct lpfc_iocbq *,
             struct lpfc_iocbq *);
 static void lpfc_fabric_abort_vport(struct lpfc_vport *vport);
 static int lpfc_issue_els_fdisc(struct lpfc_vport *vport,
                 struct lpfc_nodelist *ndlp, uint8_t retry);
 static int lpfc_issue_fabric_iocb(struct lpfc_hba *phba,
                   struct lpfc_iocbq *iocb);
 static void lpfc_cmpl_els_edc(struct lpfc_hba *phba,
                   struct lpfc_iocbq *cmdiocb,
                   struct lpfc_iocbq *rspiocb);
 static void lpfc_cmpl_els_uvem(struct lpfc_hba *, struct lpfc_iocbq *,
                    struct lpfc_iocbq *);
 
 static int lpfc_max_els_tries = 3;
 
 static void lpfc_init_cs_ctl_bitmap(struct lpfc_vport *vport);
 static void lpfc_vmid_set_cs_ctl_range(struct lpfc_vport *vport, u32 min, u32 max);
 static void lpfc_vmid_put_cs_ctl(struct lpfc_vport *vport, u32 ctcl_vmid);
 
 /**
  * lpfc_els_chk_latt - Check host link attention event for a vport
  * @vport: pointer to a host virtual N_Port data structure.
  *
  * This routine checks whether there is an outstanding host link
  * attention event during the discovery process with the @vport. It is done
  * by reading the HBA's Host Attention (HA) register. If there is any host
  * link attention events during this @vport's discovery process, the @vport
  * shall be marked as FC_ABORT_DISCOVERY, a host link attention clear shall
  * be issued if the link state is not already in host link cleared state,
  * and a return code shall indicate whether the host link attention event
  * had happened.
  *
  * Note that, if either the host link is in state LPFC_LINK_DOWN or @vport
  * state in LPFC_VPORT_READY, the request for checking host link attention
  * event will be ignored and a return code shall indicate no host link
  * attention event had happened.
  *
  * Return codes
  *   0 - no host link attention event happened
  *   1 - host link attention event happened
  **/
 int
 lpfc_els_chk_latt(struct lpfc_vport *vport)
 {
     struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
     struct lpfc_hba  *phba = vport->phba;
     uint32_t ha_copy;
 
     if (vport->port_state >= LPFC_VPORT_READY ||
         phba->link_state == LPFC_LINK_DOWN ||
         phba->sli_rev > LPFC_SLI_REV3)
         return 0;
 
     /* Read the HBA Host Attention Register */
     if (lpfc_readl(phba->HAregaddr, &ha_copy))
         return 1;
 
     if (!(ha_copy & HA_LATT))
         return 0;
 
     /* Pending Link Event during Discovery */
     lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
              "0237 Pending Link Event during "
              "Discovery: State x%x\n",
              phba->pport->port_state);
 
     /* CLEAR_LA should re-enable link attention events and
      * we should then immediately take a LATT event. The
      * LATT processing should call lpfc_linkdown() which
      * will cleanup any left over in-progress discovery
      * events.
      */
     spin_lock_irq(shost->host_lock);
     vport->fc_flag |= FC_ABORT_DISCOVERY;
     spin_unlock_irq(shost->host_lock);
 
     if (phba->link_state != LPFC_CLEAR_LA)
         lpfc_issue_clear_la(phba, vport);
 
     return 1;
 }
 
 /**
  * lpfc_prep_els_iocb - Allocate and prepare a lpfc iocb data structure
  * @vport: pointer to a host virtual N_Port data structure.
  * @expect_rsp: flag indicating whether response is expected.
  * @cmd_size: size of the ELS command.
  * @retry: number of retries to the command when it fails.
  * @ndlp: pointer to a node-list data structure.
  * @did: destination identifier.
  * @elscmd: the ELS command code.
  *
  * This routine is used for allocating a lpfc-IOCB data structure from
  * the driver lpfc-IOCB free-list and prepare the IOCB with the parameters
  * passed into the routine for discovery state machine to issue an Extended
  * Link Service (ELS) commands. It is a generic lpfc-IOCB allocation
  * and preparation routine that is used by all the discovery state machine
  * routines and the ELS command-specific fields will be later set up by
  * the individual discovery machine routines after calling this routine
  * allocating and preparing a generic IOCB data structure. It fills in the
  * Buffer Descriptor Entries (BDEs), allocates buffers for both command
  * payload and response payload (if expected). The reference count on the
  * ndlp is incremented by 1 and the reference to the ndlp is put into
  * ndlp of the IOCB data structure for this IOCB to hold the ndlp
  * reference for the command's callback function to access later.
  *
  * Return code
  *   Pointer to the newly allocated/prepared els iocb data structure
  *   NULL - when els iocb data structure allocation/preparation failed
  **/
 struct lpfc_iocbq *
 lpfc_prep_els_iocb(struct lpfc_vport *vport, u8 expect_rsp,
            u16 cmd_size, u8 retry,
            struct lpfc_nodelist *ndlp, u32 did,
            u32 elscmd)
 {
     struct lpfc_hba  *phba = vport->phba;
     struct lpfc_iocbq *elsiocb;
     struct lpfc_dmabuf *pcmd, *prsp, *pbuflist, *bmp;
     struct ulp_bde64_le *bpl;
     u32 timeout = 0;
 
     if (!lpfc_is_link_up(phba))
         return NULL;
 
     /* Allocate buffer for  command iocb */
     elsiocb = lpfc_sli_get_iocbq(phba);
     if (!elsiocb)
         return NULL;
 
     /*
      * If this command is for fabric controller and HBA running
      * in FIP mode send FLOGI, FDISC and LOGO as FIP frames.
      */
     if ((did == Fabric_DID) &&
         (phba->hba_flag & HBA_FIP_SUPPORT) &&
         ((elscmd == ELS_CMD_FLOGI) ||
          (elscmd == ELS_CMD_FDISC) ||
          (elscmd == ELS_CMD_LOGO)))
         switch (elscmd) {
         case ELS_CMD_FLOGI:
             elsiocb->cmd_flag |=
                 ((LPFC_ELS_ID_FLOGI << LPFC_FIP_ELS_ID_SHIFT)
                  & LPFC_FIP_ELS_ID_MASK);
             break;
         case ELS_CMD_FDISC:
             elsiocb->cmd_flag |=
                 ((LPFC_ELS_ID_FDISC << LPFC_FIP_ELS_ID_SHIFT)
                  & LPFC_FIP_ELS_ID_MASK);
             break;
         case ELS_CMD_LOGO:
             elsiocb->cmd_flag |=
                 ((LPFC_ELS_ID_LOGO << LPFC_FIP_ELS_ID_SHIFT)
                  & LPFC_FIP_ELS_ID_MASK);
             break;
         }
     else
         elsiocb->cmd_flag &= ~LPFC_FIP_ELS_ID_MASK;
 
     /* fill in BDEs for command */
     /* Allocate buffer for command payload */
     pcmd = kmalloc(sizeof(*pcmd), GFP_KERNEL);
     if (pcmd)
         pcmd->virt = lpfc_mbuf_alloc(phba, MEM_PRI, &pcmd->phys);
     if (!pcmd || !pcmd->virt)
         goto els_iocb_free_pcmb_exit;
 
     INIT_LIST_HEAD(&pcmd->list);
 
     /* Allocate buffer for response payload */
     if (expect_rsp) {
         prsp = kmalloc(sizeof(*prsp), GFP_KERNEL);
         if (prsp)
             prsp->virt = lpfc_mbuf_alloc(phba, MEM_PRI,
                              &prsp->phys);
         if (!prsp || !prsp->virt)
             goto els_iocb_free_prsp_exit;
         INIT_LIST_HEAD(&prsp->list);
     } else {
         prsp = NULL;
     }
 
     /* Allocate buffer for Buffer ptr list */
     pbuflist = kmalloc(sizeof(*pbuflist), GFP_KERNEL);
     if (pbuflist)
         pbuflist->virt = lpfc_mbuf_alloc(phba, MEM_PRI,
                          &pbuflist->phys);
     if (!pbuflist || !pbuflist->virt)
         goto els_iocb_free_pbuf_exit;
 
     INIT_LIST_HEAD(&pbuflist->list);
 
     if (expect_rsp) {
         switch (elscmd) {
         case ELS_CMD_FLOGI:
             timeout = FF_DEF_RATOV * 2;
             break;
         case ELS_CMD_LOGO:
             timeout = phba->fc_ratov;
             break;
         default:
             timeout = phba->fc_ratov * 2;
         }
 
         /* Fill SGE for the num bde count */
         elsiocb->num_bdes = 2;
     }
 
     if (phba->sli_rev == LPFC_SLI_REV4)
         bmp = pcmd;
     else
         bmp = pbuflist;
 
     lpfc_sli_prep_els_req_rsp(phba, elsiocb, vport, bmp, cmd_size, did,
                   elscmd, timeout, expect_rsp);
 
     bpl = (struct ulp_bde64_le *)pbuflist->virt;
     bpl->addr_low = cpu_to_le32(putPaddrLow(pcmd->phys));
     bpl->addr_high = cpu_to_le32(putPaddrHigh(pcmd->phys));
     bpl->type_size = cpu_to_le32(cmd_size);
     bpl->type_size |= cpu_to_le32(ULP_BDE64_TYPE_BDE_64);
 
     if (expect_rsp) {
         bpl++;
         bpl->addr_low = cpu_to_le32(putPaddrLow(prsp->phys));
         bpl->addr_high = cpu_to_le32(putPaddrHigh(prsp->phys));
         bpl->type_size = cpu_to_le32(FCELSSIZE);
         bpl->type_size |= cpu_to_le32(ULP_BDE64_TYPE_BDE_64);
     }
 
     elsiocb->cmd_dmabuf = pcmd;
     elsiocb->bpl_dmabuf = pbuflist;
     elsiocb->retry = retry;
     elsiocb->vport = vport;
     elsiocb->drvrTimeout = (phba->fc_ratov << 1) + LPFC_DRVR_TIMEOUT;
 
     if (prsp)
         list_add(&prsp->list, &pcmd->list);
     if (expect_rsp) {
         /* Xmit ELS command <elsCmd> to remote NPORT <did> */
         lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
                  "0116 Xmit ELS command x%x to remote "
                  "NPORT x%x I/O tag: x%x, port state:x%x "
                  "rpi x%x fc_flag:x%x\n",
                  elscmd, did, elsiocb->iotag,
                  vport->port_state, ndlp->nlp_rpi,
                  vport->fc_flag);
     } else {
         /* Xmit ELS response <elsCmd> to remote NPORT <did> */
         lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
                  "0117 Xmit ELS response x%x to remote "
                  "NPORT x%x I/O tag: x%x, size: x%x "
                  "port_state x%x  rpi x%x fc_flag x%x\n",
                  elscmd, ndlp->nlp_DID, elsiocb->iotag,
                  cmd_size, vport->port_state,
                  ndlp->nlp_rpi, vport->fc_flag);
     }
 
     return elsiocb;
 
 els_iocb_free_pbuf_exit:
     if (expect_rsp)
         lpfc_mbuf_free(phba, prsp->virt, prsp->phys);
     kfree(pbuflist);
 
 els_iocb_free_prsp_exit:
     lpfc_mbuf_free(phba, pcmd->virt, pcmd->phys);
     kfree(prsp);
 
 els_iocb_free_pcmb_exit:
     kfree(pcmd);
     lpfc_sli_release_iocbq(phba, elsiocb);
     return NULL;
 }
 
 /**
  * lpfc_issue_fabric_reglogin - Issue fabric registration login for a vport
  * @vport: pointer to a host virtual N_Port data structure.
  *
  * This routine issues a fabric registration login for a @vport. An
  * active ndlp node with Fabric_DID must already exist for this @vport.
  * The routine invokes two mailbox commands to carry out fabric registration
  * login through the HBA firmware: the first mailbox command requests the
  * HBA to perform link configuration for the @vport; and the second mailbox
  * command requests the HBA to perform the actual fabric registration login
  * with the @vport.
  *
  * Return code
  *   0 - successfully issued fabric registration login for @vport
  *   -ENXIO -- failed to issue fabric registration login for @vport
  **/
 int
 lpfc_issue_fabric_reglogin(struct lpfc_vport *vport)
 {
     struct lpfc_hba  *phba = vport->phba;
     LPFC_MBOXQ_t *mbox;
     struct lpfc_nodelist *ndlp;
     struct serv_parm *sp;
     int rc;
     int err = 0;
 
     sp = &phba->fc_fabparam;
     ndlp = lpfc_findnode_did(vport, Fabric_DID);
     if (!ndlp) {
         err = 1;
         goto fail;
     }
 
     mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
     if (!mbox) {
         err = 2;
         goto fail;
     }
 
     vport->port_state = LPFC_FABRIC_CFG_LINK;
     lpfc_config_link(phba, mbox);
     mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
     mbox->vport = vport;
 
     rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
     if (rc == MBX_NOT_FINISHED) {
         err = 3;
         goto fail_free_mbox;
     }
 
     mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
     if (!mbox) {
         err = 4;
         goto fail;
     }
     rc = lpfc_reg_rpi(phba, vport->vpi, Fabric_DID, (uint8_t *)sp, mbox,
               ndlp->nlp_rpi);
     if (rc) {
         err = 5;
         goto fail_free_mbox;
     }
 
     mbox->mbox_cmpl = lpfc_mbx_cmpl_fabric_reg_login;
     mbox->vport = vport;
     /* increment the reference count on ndlp to hold reference
      * for the callback routine.
      */
     mbox->ctx_ndlp = lpfc_nlp_get(ndlp);
     if (!mbox->ctx_ndlp) {
         err = 6;
         goto fail_free_mbox;
     }
 
     rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
     if (rc == MBX_NOT_FINISHED) {
         err = 7;
         goto fail_issue_reg_login;
     }
 
     return 0;
 
 fail_issue_reg_login:
     /* decrement the reference count on ndlp just incremented
      * for the failed mbox command.
      */
     lpfc_nlp_put(ndlp);
 fail_free_mbox:
     lpfc_mbox_rsrc_cleanup(phba, mbox, MBOX_THD_UNLOCKED);
 fail:
     lpfc_vport_set_state(vport, FC_VPORT_FAILED);
     lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
              "0249 Cannot issue Register Fabric login: Err %d\n",
              err);
     return -ENXIO;
 }
 
 /**
  * lpfc_issue_reg_vfi - Register VFI for this vport's fabric login
  * @vport: pointer to a host virtual N_Port data structure.
  *
  * This routine issues a REG_VFI mailbox for the vfi, vpi, fcfi triplet for
  * the @vport. This mailbox command is necessary for SLI4 port only.
  *
  * Return code
  *   0 - successfully issued REG_VFI for @vport
  *   A failure code otherwise.
  **/
 int
 lpfc_issue_reg_vfi(struct lpfc_vport *vport)
 {
     struct lpfc_hba  *phba = vport->phba;
     LPFC_MBOXQ_t *mboxq = NULL;
     struct lpfc_nodelist *ndlp;
     struct lpfc_dmabuf *dmabuf = NULL;
     int rc = 0;
 
     /* move forward in case of SLI4 FC port loopback test and pt2pt mode */
     if ((phba->sli_rev == LPFC_SLI_REV4) &&
         !(phba->link_flag & LS_LOOPBACK_MODE) &&
         !(vport->fc_flag & FC_PT2PT)) {
         ndlp = lpfc_findnode_did(vport, Fabric_DID);
         if (!ndlp) {
             rc = -ENODEV;
             goto fail;
         }
     }
 
     mboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
     if (!mboxq) {
         rc = -ENOMEM;
         goto fail;
     }
 
     /* Supply CSP's only if we are fabric connect or pt-to-pt connect */
     if ((vport->fc_flag & FC_FABRIC) || (vport->fc_flag & FC_PT2PT)) {
         rc = lpfc_mbox_rsrc_prep(phba, mboxq);
         if (rc) {
             rc = -ENOMEM;
             goto fail_mbox;
         }
         dmabuf = mboxq->ctx_buf;
         memcpy(dmabuf->virt, &phba->fc_fabparam,
                sizeof(struct serv_parm));
     }
 
     vport->port_state = LPFC_FABRIC_CFG_LINK;
     if (dmabuf) {
         lpfc_reg_vfi(mboxq, vport, dmabuf->phys);
         /* lpfc_reg_vfi memsets the mailbox.  Restore the ctx_buf. */
         mboxq->ctx_buf = dmabuf;
     } else {
         lpfc_reg_vfi(mboxq, vport, 0);
     }
 
     mboxq->mbox_cmpl = lpfc_mbx_cmpl_reg_vfi;
     mboxq->vport = vport;
     rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_NOWAIT);
     if (rc == MBX_NOT_FINISHED) {
         rc = -ENXIO;
         goto fail_mbox;
     }
     return 0;
 
 fail_mbox:
     lpfc_mbox_rsrc_cleanup(phba, mboxq, MBOX_THD_UNLOCKED);
 fail:
     lpfc_vport_set_state(vport, FC_VPORT_FAILED);
     lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
              "0289 Issue Register VFI failed: Err %d\n", rc);
     return rc;
 }
 
 /**
  * lpfc_issue_unreg_vfi - Unregister VFI for this vport's fabric login
  * @vport: pointer to a host virtual N_Port data structure.
  *
  * This routine issues a UNREG_VFI mailbox with the vfi, vpi, fcfi triplet for
  * the @vport. This mailbox command is necessary for SLI4 port only.
  *
  * Return code
  *   0 - successfully issued REG_VFI for @vport
  *   A failure code otherwise.
  **/
 int
 lpfc_issue_unreg_vfi(struct lpfc_vport *vport)
 {
     struct lpfc_hba *phba = vport->phba;
     struct Scsi_Host *shost;
     LPFC_MBOXQ_t *mboxq;
     int rc;
 
     mboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
     if (!mboxq) {
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "2556 UNREG_VFI mbox allocation failed"
                 "HBA state x%x\n", phba->pport->port_state);
         return -ENOMEM;
     }
 
     lpfc_unreg_vfi(mboxq, vport);
     mboxq->vport = vport;
     mboxq->mbox_cmpl = lpfc_unregister_vfi_cmpl;
 
     rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_NOWAIT);
     if (rc == MBX_NOT_FINISHED) {
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "2557 UNREG_VFI issue mbox failed rc x%x "
                 "HBA state x%x\n",
                 rc, phba->pport->port_state);
         mempool_free(mboxq, phba->mbox_mem_pool);
         return -EIO;
     }
 
     shost = lpfc_shost_from_vport(vport);
     spin_lock_irq(shost->host_lock);
     vport->fc_flag &= ~FC_VFI_REGISTERED;
     spin_unlock_irq(shost->host_lock);
     return 0;
 }
 
 /**
  * lpfc_check_clean_addr_bit - Check whether assigned FCID is clean.
  * @vport: pointer to a host virtual N_Port data structure.
  * @sp: pointer to service parameter data structure.
  *
  * This routine is called from FLOGI/FDISC completion handler functions.
  * lpfc_check_clean_addr_bit return 1 when FCID/Fabric portname/ Fabric
  * node nodename is changed in the completion service parameter else return
  * 0. This function also set flag in the vport data structure to delay
  * NP_Port discovery after the FLOGI/FDISC completion if Clean address bit
  * in FLOGI/FDISC response is cleared and FCID/Fabric portname/ Fabric
  * node nodename is changed in the completion service parameter.
  *
  * Return code
  *   0 - FCID and Fabric Nodename and Fabric portname is not changed.
  *   1 - FCID or Fabric Nodename or Fabric portname is changed.
  *
  **/
 static uint8_t
 lpfc_check_clean_addr_bit(struct lpfc_vport *vport,
         struct serv_parm *sp)
 {
     struct lpfc_hba *phba = vport->phba;
     uint8_t fabric_param_changed = 0;
     struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
 
     if ((vport->fc_prevDID != vport->fc_myDID) ||
         memcmp(&vport->fabric_portname, &sp->portName,
             sizeof(struct lpfc_name)) ||
         memcmp(&vport->fabric_nodename, &sp->nodeName,
             sizeof(struct lpfc_name)) ||
         (vport->vport_flag & FAWWPN_PARAM_CHG)) {
         fabric_param_changed = 1;
         vport->vport_flag &= ~FAWWPN_PARAM_CHG;
     }
     /*
      * Word 1 Bit 31 in common service parameter is overloaded.
      * Word 1 Bit 31 in FLOGI request is multiple NPort request
      * Word 1 Bit 31 in FLOGI response is clean address bit
      *
      * If fabric parameter is changed and clean address bit is
      * cleared delay nport discovery if
      * - vport->fc_prevDID != 0 (not initial discovery) OR
      * - lpfc_delay_discovery module parameter is set.
      */
     if (fabric_param_changed && !sp->cmn.clean_address_bit &&
         (vport->fc_prevDID || phba->cfg_delay_discovery)) {
         spin_lock_irq(shost->host_lock);
         vport->fc_flag |= FC_DISC_DELAYED;
         spin_unlock_irq(shost->host_lock);
     }
 
     return fabric_param_changed;
 }
 
 
 /**
  * lpfc_cmpl_els_flogi_fabric - Completion function for flogi to a fabric port
  * @vport: pointer to a host virtual N_Port data structure.
  * @ndlp: pointer to a node-list data structure.
  * @sp: pointer to service parameter data structure.
  * @ulp_word4: command response value
  *
  * This routine is invoked by the lpfc_cmpl_els_flogi() completion callback
  * function to handle the completion of a Fabric Login (FLOGI) into a fabric
  * port in a fabric topology. It properly sets up the parameters to the @ndlp
  * from the IOCB response. It also check the newly assigned N_Port ID to the
  * @vport against the previously assigned N_Port ID. If it is different from
  * the previously assigned Destination ID (DID), the lpfc_unreg_rpi() routine
  * is invoked on all the remaining nodes with the @vport to unregister the
  * Remote Port Indicators (RPIs). Finally, the lpfc_issue_fabric_reglogin()
  * is invoked to register login to the fabric.
  *
  * Return code
  *   0 - Success (currently, always return 0)
  **/
 static int
 lpfc_cmpl_els_flogi_fabric(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
                struct serv_parm *sp, uint32_t ulp_word4)
 {
     struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
     struct lpfc_hba  *phba = vport->phba;
     struct lpfc_nodelist *np;
     struct lpfc_nodelist *next_np;
     uint8_t fabric_param_changed;
 
     spin_lock_irq(shost->host_lock);
     vport->fc_flag |= FC_FABRIC;
     spin_unlock_irq(shost->host_lock);
 
     phba->fc_edtov = be32_to_cpu(sp->cmn.e_d_tov);
     if (sp->cmn.edtovResolution)    /* E_D_TOV ticks are in nanoseconds */
         phba->fc_edtov = (phba->fc_edtov + 999999) / 1000000;
 
     phba->fc_edtovResol = sp->cmn.edtovResolution;
     phba->fc_ratov = (be32_to_cpu(sp->cmn.w2.r_a_tov) + 999) / 1000;
 
     if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
         spin_lock_irq(shost->host_lock);
         vport->fc_flag |= FC_PUBLIC_LOOP;
         spin_unlock_irq(shost->host_lock);
     }
 
     vport->fc_myDID = ulp_word4 & Mask_DID;
     memcpy(&ndlp->nlp_portname, &sp->portName, sizeof(struct lpfc_name));
     memcpy(&ndlp->nlp_nodename, &sp->nodeName, sizeof(struct lpfc_name));
     ndlp->nlp_class_sup = 0;
     if (sp->cls1.classValid)
         ndlp->nlp_class_sup |= FC_COS_CLASS1;
     if (sp->cls2.classValid)
         ndlp->nlp_class_sup |= FC_COS_CLASS2;
     if (sp->cls3.classValid)
         ndlp->nlp_class_sup |= FC_COS_CLASS3;
     if (sp->cls4.classValid)
         ndlp->nlp_class_sup |= FC_COS_CLASS4;
     ndlp->nlp_maxframe = ((sp->cmn.bbRcvSizeMsb & 0x0F) << 8) |
                 sp->cmn.bbRcvSizeLsb;
 
     fabric_param_changed = lpfc_check_clean_addr_bit(vport, sp);
     if (fabric_param_changed) {
         /* Reset FDMI attribute masks based on config parameter */
         if (phba->cfg_enable_SmartSAN ||
             (phba->cfg_fdmi_on == LPFC_FDMI_SUPPORT)) {
             /* Setup appropriate attribute masks */
             vport->fdmi_hba_mask = LPFC_FDMI2_HBA_ATTR;
             if (phba->cfg_enable_SmartSAN)
                 vport->fdmi_port_mask = LPFC_FDMI2_SMART_ATTR;
             else
                 vport->fdmi_port_mask = LPFC_FDMI2_PORT_ATTR;
         } else {
             vport->fdmi_hba_mask = 0;
             vport->fdmi_port_mask = 0;
         }
 
     }
     memcpy(&vport->fabric_portname, &sp->portName,
             sizeof(struct lpfc_name));
     memcpy(&vport->fabric_nodename, &sp->nodeName,
             sizeof(struct lpfc_name));
     memcpy(&phba->fc_fabparam, sp, sizeof(struct serv_parm));
 
     if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) {
         if (sp->cmn.response_multiple_NPort) {
             lpfc_printf_vlog(vport, KERN_WARNING,
                      LOG_ELS | LOG_VPORT,
                      "1816 FLOGI NPIV supported, "
                      "response data 0x%x\n",
                      sp->cmn.response_multiple_NPort);
             spin_lock_irq(&phba->hbalock);
             phba->link_flag |= LS_NPIV_FAB_SUPPORTED;
             spin_unlock_irq(&phba->hbalock);
         } else {
             /* Because we asked f/w for NPIV it still expects us
             to call reg_vnpid at least for the physical host */
             lpfc_printf_vlog(vport, KERN_WARNING,
                      LOG_ELS | LOG_VPORT,
                      "1817 Fabric does not support NPIV "
                      "- configuring single port mode.\n");
             spin_lock_irq(&phba->hbalock);
             phba->link_flag &= ~LS_NPIV_FAB_SUPPORTED;
             spin_unlock_irq(&phba->hbalock);
         }
     }
 
     /*
      * For FC we need to do some special processing because of the SLI
      * Port's default settings of the Common Service Parameters.
      */
     if ((phba->sli_rev == LPFC_SLI_REV4) &&
         (phba->sli4_hba.lnk_info.lnk_tp == LPFC_LNK_TYPE_FC)) {
         /* If physical FC port changed, unreg VFI and ALL VPIs / RPIs */
         if (fabric_param_changed)
             lpfc_unregister_fcf_prep(phba);
 
         /* This should just update the VFI CSPs*/
         if (vport->fc_flag & FC_VFI_REGISTERED)
             lpfc_issue_reg_vfi(vport);
     }
 
     if (fabric_param_changed &&
         !(vport->fc_flag & FC_VPORT_NEEDS_REG_VPI)) {
 
         /* If our NportID changed, we need to ensure all
          * remaining NPORTs get unreg_login'ed.
          */
         list_for_each_entry_safe(np, next_np,
                     &vport->fc_nodes, nlp_listp) {
             if ((np->nlp_state != NLP_STE_NPR_NODE) ||
                    !(np->nlp_flag & NLP_NPR_ADISC))
                 continue;
             spin_lock_irq(&np->lock);
             np->nlp_flag &= ~NLP_NPR_ADISC;
             spin_unlock_irq(&np->lock);
             lpfc_unreg_rpi(vport, np);
         }
         lpfc_cleanup_pending_mbox(vport);
 
         if (phba->sli_rev == LPFC_SLI_REV4) {
             lpfc_sli4_unreg_all_rpis(vport);
             lpfc_mbx_unreg_vpi(vport);
             spin_lock_irq(shost->host_lock);
             vport->fc_flag |= FC_VPORT_NEEDS_INIT_VPI;
             spin_unlock_irq(shost->host_lock);
         }
 
         /*
          * For SLI3 and SLI4, the VPI needs to be reregistered in
          * response to this fabric parameter change event.
          */
         spin_lock_irq(shost->host_lock);
         vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
         spin_unlock_irq(shost->host_lock);
     } else if ((phba->sli_rev == LPFC_SLI_REV4) &&
         !(vport->fc_flag & FC_VPORT_NEEDS_REG_VPI)) {
             /*
              * Driver needs to re-reg VPI in order for f/w
              * to update the MAC address.
              */
             lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
             lpfc_register_new_vport(phba, vport, ndlp);
             return 0;
     }
 
     if (phba->sli_rev < LPFC_SLI_REV4) {
         lpfc_nlp_set_state(vport, ndlp, NLP_STE_REG_LOGIN_ISSUE);
         if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED &&
             vport->fc_flag & FC_VPORT_NEEDS_REG_VPI)
             lpfc_register_new_vport(phba, vport, ndlp);
         else
             lpfc_issue_fabric_reglogin(vport);
     } else {
         ndlp->nlp_type |= NLP_FABRIC;
         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
         if ((!(vport->fc_flag & FC_VPORT_NEEDS_REG_VPI)) &&
             (vport->vpi_state & LPFC_VPI_REGISTERED)) {
             lpfc_start_fdiscs(phba);
             lpfc_do_scr_ns_plogi(phba, vport);
         } else if (vport->fc_flag & FC_VFI_REGISTERED)
             lpfc_issue_init_vpi(vport);
         else {
             lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
                     "3135 Need register VFI: (x%x/%x)\n",
                     vport->fc_prevDID, vport->fc_myDID);
             lpfc_issue_reg_vfi(vport);
         }
     }
     return 0;
 }
 
 /**
  * lpfc_cmpl_els_flogi_nport - Completion function for flogi to an N_Port
  * @vport: pointer to a host virtual N_Port data structure.
  * @ndlp: pointer to a node-list data structure.
  * @sp: pointer to service parameter data structure.
  *
  * This routine is invoked by the lpfc_cmpl_els_flogi() completion callback
  * function to handle the completion of a Fabric Login (FLOGI) into an N_Port
  * in a point-to-point topology. First, the @vport's N_Port Name is compared
  * with the received N_Port Name: if the @vport's N_Port Name is greater than
  * the received N_Port Name lexicographically, this node shall assign local
  * N_Port ID (PT2PT_LocalID: 1) and remote N_Port ID (PT2PT_RemoteID: 2) and
  * will send out Port Login (PLOGI) with the N_Port IDs assigned. Otherwise,
  * this node shall just wait for the remote node to issue PLOGI and assign
  * N_Port IDs.
  *
  * Return code
  *   0 - Success
  *   -ENXIO - Fail
  **/
 static int
 lpfc_cmpl_els_flogi_nport(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
               struct serv_parm *sp)
 {
     struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
     struct lpfc_hba  *phba = vport->phba;
     LPFC_MBOXQ_t *mbox;
     int rc;
 
     spin_lock_irq(shost->host_lock);
     vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
     vport->fc_flag |= FC_PT2PT;
     spin_unlock_irq(shost->host_lock);
 
     /* If we are pt2pt with another NPort, force NPIV off! */
     phba->sli3_options &= ~LPFC_SLI3_NPIV_ENABLED;
 
     /* If physical FC port changed, unreg VFI and ALL VPIs / RPIs */
     if ((phba->sli_rev == LPFC_SLI_REV4) && phba->fc_topology_changed) {
         lpfc_unregister_fcf_prep(phba);
 
         spin_lock_irq(shost->host_lock);
         vport->fc_flag &= ~FC_VFI_REGISTERED;
         spin_unlock_irq(shost->host_lock);
         phba->fc_topology_changed = 0;
     }
 
     rc = memcmp(&vport->fc_portname, &sp->portName,
             sizeof(vport->fc_portname));
 
     if (rc >= 0) {
         /* This side will initiate the PLOGI */
         spin_lock_irq(shost->host_lock);
         vport->fc_flag |= FC_PT2PT_PLOGI;
         spin_unlock_irq(shost->host_lock);
 
         /*
          * N_Port ID cannot be 0, set our Id to LocalID
          * the other side will be RemoteID.
          */
 
         /* not equal */
         if (rc)
             vport->fc_myDID = PT2PT_LocalID;
 
         /* If not registered with a transport, decrement ndlp reference
          * count indicating that ndlp can be safely released when other
          * references are removed.
          */
         if (!(ndlp->fc4_xpt_flags & (SCSI_XPT_REGD | NVME_XPT_REGD)))
             lpfc_nlp_put(ndlp);
 
         ndlp = lpfc_findnode_did(vport, PT2PT_RemoteID);
         if (!ndlp) {
             /*
              * Cannot find existing Fabric ndlp, so allocate a
              * new one
              */
             ndlp = lpfc_nlp_init(vport, PT2PT_RemoteID);
             if (!ndlp)
                 goto fail;
         }
 
         memcpy(&ndlp->nlp_portname, &sp->portName,
                sizeof(struct lpfc_name));
         memcpy(&ndlp->nlp_nodename, &sp->nodeName,
                sizeof(struct lpfc_name));
         /* Set state will put ndlp onto node list if not already done */
         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
         spin_lock_irq(&ndlp->lock);
         ndlp->nlp_flag |= NLP_NPR_2B_DISC;
         spin_unlock_irq(&ndlp->lock);
 
         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
         if (!mbox)
             goto fail;
 
         lpfc_config_link(phba, mbox);
 
         mbox->mbox_cmpl = lpfc_mbx_cmpl_local_config_link;
         mbox->vport = vport;
         rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
         if (rc == MBX_NOT_FINISHED) {
             mempool_free(mbox, phba->mbox_mem_pool);
             goto fail;
         }
     } else {
         /* This side will wait for the PLOGI. If not registered with
          * a transport, decrement node reference count indicating that
          * ndlp can be released when other references are removed.
          */
         if (!(ndlp->fc4_xpt_flags & (SCSI_XPT_REGD | NVME_XPT_REGD)))
             lpfc_nlp_put(ndlp);
 
         /* Start discovery - this should just do CLEAR_LA */
         lpfc_disc_start(vport);
     }
 
     return 0;
 fail:
     return -ENXIO;
 }
 
 /**
  * lpfc_cmpl_els_flogi - Completion callback function for flogi
  * @phba: pointer to lpfc hba data structure.
  * @cmdiocb: pointer to lpfc command iocb data structure.
  * @rspiocb: pointer to lpfc response iocb data structure.
  *
  * This routine is the top-level completion callback function for issuing
  * a Fabric Login (FLOGI) command. If the response IOCB reported error,
  * the lpfc_els_retry() routine shall be invoked to retry the FLOGI. If
  * retry has been made (either immediately or delayed with lpfc_els_retry()
  * returning 1), the command IOCB will be released and function returned.
  * If the retry attempt has been given up (possibly reach the maximum
  * number of retries), one additional decrement of ndlp reference shall be
  * invoked before going out after releasing the command IOCB. This will
  * actually release the remote node (Note, lpfc_els_free_iocb() will also
  * invoke one decrement of ndlp reference count). If no error reported in
  * the IOCB status, the command Port ID field is used to determine whether
  * this is a point-to-point topology or a fabric topology: if the Port ID
  * field is assigned, it is a fabric topology; otherwise, it is a
  * point-to-point topology. The routine lpfc_cmpl_els_flogi_fabric() or
  * lpfc_cmpl_els_flogi_nport() shall be invoked accordingly to handle the
  * specific topology completion conditions.
  **/
 static void
 lpfc_cmpl_els_flogi(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
             struct lpfc_iocbq *rspiocb)
 {
     struct lpfc_vport *vport = cmdiocb->vport;
     struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
     struct lpfc_nodelist *ndlp = cmdiocb->ndlp;
     IOCB_t *irsp;
     struct lpfc_dmabuf *pcmd = cmdiocb->cmd_dmabuf, *prsp;
     struct serv_parm *sp;
     uint16_t fcf_index;
     int rc;
     u32 ulp_status, ulp_word4, tmo;
 
     /* Check to see if link went down during discovery */
     if (lpfc_els_chk_latt(vport)) {
         /* One additional decrement on node reference count to
          * trigger the release of the node
          */
         if (!(ndlp->fc4_xpt_flags & SCSI_XPT_REGD))
             lpfc_nlp_put(ndlp);
         goto out;
     }
 
     ulp_status = get_job_ulpstatus(phba, rspiocb);
     ulp_word4 = get_job_word4(phba, rspiocb);
 
     if (phba->sli_rev == LPFC_SLI_REV4) {
         tmo = get_wqe_tmo(cmdiocb);
     } else {
         irsp = &rspiocb->iocb;
         tmo = irsp->ulpTimeout;
     }
 
     lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
         "FLOGI cmpl:      status:x%x/x%x state:x%x",
         ulp_status, ulp_word4,
         vport->port_state);
 
     if (ulp_status) {
         /*
          * In case of FIP mode, perform roundrobin FCF failover
          * due to new FCF discovery
          */
         if ((phba->hba_flag & HBA_FIP_SUPPORT) &&
             (phba->fcf.fcf_flag & FCF_DISCOVERY)) {
             if (phba->link_state < LPFC_LINK_UP)
                 goto stop_rr_fcf_flogi;
             if ((phba->fcoe_cvl_eventtag_attn ==
                  phba->fcoe_cvl_eventtag) &&
                 (ulp_status == IOSTAT_LOCAL_REJECT) &&
                 ((ulp_word4 & IOERR_PARAM_MASK) ==
                 IOERR_SLI_ABORTED))
                 goto stop_rr_fcf_flogi;
             else
                 phba->fcoe_cvl_eventtag_attn =
                     phba->fcoe_cvl_eventtag;
             lpfc_printf_log(phba, KERN_WARNING, LOG_FIP | LOG_ELS,
                     "2611 FLOGI failed on FCF (x%x), "
                     "status:x%x/x%x, tmo:x%x, perform "
                     "roundrobin FCF failover\n",
                     phba->fcf.current_rec.fcf_indx,
                     ulp_status, ulp_word4, tmo);
             lpfc_sli4_set_fcf_flogi_fail(phba,
                     phba->fcf.current_rec.fcf_indx);
             fcf_index = lpfc_sli4_fcf_rr_next_index_get(phba);
             rc = lpfc_sli4_fcf_rr_next_proc(vport, fcf_index);
             if (rc)
                 goto out;
         }
 
 stop_rr_fcf_flogi:
         /* FLOGI failure */
         if (!(ulp_status == IOSTAT_LOCAL_REJECT &&
               ((ulp_word4 & IOERR_PARAM_MASK) ==
                     IOERR_LOOP_OPEN_FAILURE)))
             lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
                      "2858 FLOGI failure Status:x%x/x%x TMO"
                      ":x%x Data x%x x%x\n",
                      ulp_status, ulp_word4, tmo,
                      phba->hba_flag, phba->fcf.fcf_flag);
 
         /* Check for retry */
         if (lpfc_els_retry(phba, cmdiocb, rspiocb))
             goto out;
 
         lpfc_printf_vlog(vport, KERN_WARNING, LOG_TRACE_EVENT,
                  "0150 FLOGI failure Status:x%x/x%x "
                  "xri x%x TMO:x%x refcnt %d\n",
                  ulp_status, ulp_word4, cmdiocb->sli4_xritag,
                  tmo, kref_read(&ndlp->kref));
 
         /* If this is not a loop open failure, bail out */
         if (!(ulp_status == IOSTAT_LOCAL_REJECT &&
               ((ulp_word4 & IOERR_PARAM_MASK) ==
                     IOERR_LOOP_OPEN_FAILURE))) {
             /* FLOGI failure */
             lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
                      "0100 FLOGI failure Status:x%x/x%x "
                      "TMO:x%x\n",
                      ulp_status, ulp_word4, tmo);
             goto flogifail;
         }
 
         /* FLOGI failed, so there is no fabric */
         spin_lock_irq(shost->host_lock);
         vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP |
                     FC_PT2PT_NO_NVME);
         spin_unlock_irq(shost->host_lock);
 
         /* If private loop, then allow max outstanding els to be
          * LPFC_MAX_DISC_THREADS (32). Scanning in the case of no
          * alpa map would take too long otherwise.
          */
         if (phba->alpa_map[0] == 0)
             vport->cfg_discovery_threads = LPFC_MAX_DISC_THREADS;
         if ((phba->sli_rev == LPFC_SLI_REV4) &&
             (!(vport->fc_flag & FC_VFI_REGISTERED) ||
              (vport->fc_prevDID != vport->fc_myDID) ||
             phba->fc_topology_changed)) {
             if (vport->fc_flag & FC_VFI_REGISTERED) {
                 if (phba->fc_topology_changed) {
                     lpfc_unregister_fcf_prep(phba);
                     spin_lock_irq(shost->host_lock);
                     vport->fc_flag &= ~FC_VFI_REGISTERED;
                     spin_unlock_irq(shost->host_lock);
                     phba->fc_topology_changed = 0;
                 } else {
                     lpfc_sli4_unreg_all_rpis(vport);
                 }
             }
 
             /* Do not register VFI if the driver aborted FLOGI */
             if (!lpfc_error_lost_link(ulp_status, ulp_word4))
                 lpfc_issue_reg_vfi(vport);
 
             lpfc_nlp_put(ndlp);
             goto out;
         }
         goto flogifail;
     }
     spin_lock_irq(shost->host_lock);
     vport->fc_flag &= ~FC_VPORT_CVL_RCVD;
     vport->fc_flag &= ~FC_VPORT_LOGO_RCVD;
     spin_unlock_irq(shost->host_lock);
 
     /*
      * The FLogI succeeded.  Sync the data for the CPU before
      * accessing it.
      */
     prsp = list_get_first(&pcmd->list, struct lpfc_dmabuf, list);
     if (!prsp)
         goto out;
     sp = prsp->virt + sizeof(uint32_t);
 
     /* FLOGI completes successfully */
     lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
              "0101 FLOGI completes successfully, I/O tag:x%x "
              "xri x%x Data: x%x x%x x%x x%x x%x x%x x%x %d\n",
              cmdiocb->iotag, cmdiocb->sli4_xritag,
              ulp_word4, sp->cmn.e_d_tov,
              sp->cmn.w2.r_a_tov, sp->cmn.edtovResolution,
              vport->port_state, vport->fc_flag,
              sp->cmn.priority_tagging, kref_read(&ndlp->kref));
 
     if (sp->cmn.priority_tagging)
         vport->phba->pport->vmid_flag |= (LPFC_VMID_ISSUE_QFPA |
                           LPFC_VMID_TYPE_PRIO);
 
     if (vport->port_state == LPFC_FLOGI) {
         /*
          * If Common Service Parameters indicate Nport
          * we are point to point, if Fport we are Fabric.
          */
         if (sp->cmn.fPort)
             rc = lpfc_cmpl_els_flogi_fabric(vport, ndlp, sp,
                             ulp_word4);
         else if (!(phba->hba_flag & HBA_FCOE_MODE))
             rc = lpfc_cmpl_els_flogi_nport(vport, ndlp, sp);
         else {
             lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
                 "2831 FLOGI response with cleared Fabric "
                 "bit fcf_index 0x%x "
                 "Switch Name %02x%02x%02x%02x%02x%02x%02x%02x "
                 "Fabric Name "
                 "%02x%02x%02x%02x%02x%02x%02x%02x\n",
                 phba->fcf.current_rec.fcf_indx,
                 phba->fcf.current_rec.switch_name[0],
                 phba->fcf.current_rec.switch_name[1],
                 phba->fcf.current_rec.switch_name[2],
                 phba->fcf.current_rec.switch_name[3],
                 phba->fcf.current_rec.switch_name[4],
                 phba->fcf.current_rec.switch_name[5],
                 phba->fcf.current_rec.switch_name[6],
                 phba->fcf.current_rec.switch_name[7],
                 phba->fcf.current_rec.fabric_name[0],
                 phba->fcf.current_rec.fabric_name[1],
                 phba->fcf.current_rec.fabric_name[2],
                 phba->fcf.current_rec.fabric_name[3],
                 phba->fcf.current_rec.fabric_name[4],
                 phba->fcf.current_rec.fabric_name[5],
                 phba->fcf.current_rec.fabric_name[6],
                 phba->fcf.current_rec.fabric_name[7]);
 
             lpfc_nlp_put(ndlp);
             spin_lock_irq(&phba->hbalock);
             phba->fcf.fcf_flag &= ~FCF_DISCOVERY;
             phba->hba_flag &= ~(FCF_RR_INPROG | HBA_DEVLOSS_TMO);
             spin_unlock_irq(&phba->hbalock);
             phba->fcf.fcf_redisc_attempted = 0; /* reset */
             goto out;
         }
         if (!rc) {
             /* Mark the FCF discovery process done */
             if (phba->hba_flag & HBA_FIP_SUPPORT)
                 lpfc_printf_vlog(vport, KERN_INFO, LOG_FIP |
                         LOG_ELS,
                         "2769 FLOGI to FCF (x%x) "
                         "completed successfully\n",
                         phba->fcf.current_rec.fcf_indx);
             spin_lock_irq(&phba->hbalock);
             phba->fcf.fcf_flag &= ~FCF_DISCOVERY;
             phba->hba_flag &= ~(FCF_RR_INPROG | HBA_DEVLOSS_TMO);
             spin_unlock_irq(&phba->hbalock);
             phba->fcf.fcf_redisc_attempted = 0; /* reset */
             goto out;
         }
     } else if (vport->port_state > LPFC_FLOGI &&
            vport->fc_flag & FC_PT2PT) {
         /*
          * In a p2p topology, it is possible that discovery has
          * already progressed, and this completion can be ignored.
          * Recheck the indicated topology.
          */
         if (!sp->cmn.fPort)
             goto out;
     }
 
 flogifail:
     spin_lock_irq(&phba->hbalock);
     phba->fcf.fcf_flag &= ~FCF_DISCOVERY;
     spin_unlock_irq(&phba->hbalock);
 
     if (!lpfc_error_lost_link(ulp_status, ulp_word4)) {
         /* FLOGI failed, so just use loop map to make discovery list */
         lpfc_disc_list_loopmap(vport);
 
         /* Start discovery */
         lpfc_disc_start(vport);
     } else if (((ulp_status != IOSTAT_LOCAL_REJECT) ||
             (((ulp_word4 & IOERR_PARAM_MASK) !=
              IOERR_SLI_ABORTED) &&
             ((ulp_word4 & IOERR_PARAM_MASK) !=
              IOERR_SLI_DOWN))) &&
             (phba->link_state != LPFC_CLEAR_LA)) {
         /* If FLOGI failed enable link interrupt. */
         lpfc_issue_clear_la(phba, vport);
     }
 out:
     phba->hba_flag &= ~HBA_FLOGI_OUTSTANDING;
     lpfc_els_free_iocb(phba, cmdiocb);
     lpfc_nlp_put(ndlp);
 }
 
 /**
  * lpfc_cmpl_els_link_down - Completion callback function for ELS command
  *                           aborted during a link down
  * @phba: pointer to lpfc hba data structure.
  * @cmdiocb: pointer to lpfc command iocb data structure.
  * @rspiocb: pointer to lpfc response iocb data structure.
  *
  */
 static void
 lpfc_cmpl_els_link_down(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
             struct lpfc_iocbq *rspiocb)
 {
     uint32_t *pcmd;
     uint32_t cmd;
     u32 ulp_status, ulp_word4;
 
     pcmd = (uint32_t *)cmdiocb->cmd_dmabuf->virt;
     cmd = *pcmd;
 
     ulp_status = get_job_ulpstatus(phba, rspiocb);
     ulp_word4 = get_job_word4(phba, rspiocb);
 
     lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
             "6445 ELS completes after LINK_DOWN: "
             " Status %x/%x cmd x%x flg x%x\n",
             ulp_status, ulp_word4, cmd,
             cmdiocb->cmd_flag);
 
     if (cmdiocb->cmd_flag & LPFC_IO_FABRIC) {
         cmdiocb->cmd_flag &= ~LPFC_IO_FABRIC;
         atomic_dec(&phba->fabric_iocb_count);
     }
     lpfc_els_free_iocb(phba, cmdiocb);
 }
 
 /**
  * lpfc_issue_els_flogi - Issue an flogi iocb command for a vport
  * @vport: pointer to a host virtual N_Port data structure.
  * @ndlp: pointer to a node-list data structure.
  * @retry: number of retries to the command IOCB.
  *
  * This routine issues a Fabric Login (FLOGI) Request ELS command
  * for a @vport. The initiator service parameters are put into the payload
  * of the FLOGI Request IOCB and the top-level callback function pointer
  * to lpfc_cmpl_els_flogi() routine is put to the IOCB completion callback
  * function field. The lpfc_issue_fabric_iocb routine is invoked to send
  * out FLOGI ELS command with one outstanding fabric IOCB at a time.
  *
  * Note that the ndlp reference count will be incremented by 1 for holding the
  * ndlp and the reference to ndlp will be stored into the ndlp field of
  * the IOCB for the completion callback function to the FLOGI ELS command.
  *
  * Return code
  *   0 - successfully issued flogi iocb for @vport
  *   1 - failed to issue flogi iocb for @vport
  **/
 static int
 lpfc_issue_els_flogi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
              uint8_t retry)
 {
     struct lpfc_hba  *phba = vport->phba;
     struct serv_parm *sp;
     union lpfc_wqe128 *wqe = NULL;
     IOCB_t *icmd = NULL;
     struct lpfc_iocbq *elsiocb;
     struct lpfc_iocbq defer_flogi_acc;
     u8 *pcmd, ct;
     uint16_t cmdsize;
     uint32_t tmo, did;
     int rc;
 
     cmdsize = (sizeof(uint32_t) + sizeof(struct serv_parm));
     elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp,
                      ndlp->nlp_DID, ELS_CMD_FLOGI);
 
     if (!elsiocb)
         return 1;
 
     wqe = &elsiocb->wqe;
     pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt;
     icmd = &elsiocb->iocb;
 
     /* For FLOGI request, remainder of payload is service parameters */
     *((uint32_t *) (pcmd)) = ELS_CMD_FLOGI;
     pcmd += sizeof(uint32_t);
     memcpy(pcmd, &vport->fc_sparam, sizeof(struct serv_parm));
     sp = (struct serv_parm *) pcmd;
 
     /* Setup CSPs accordingly for Fabric */
     sp->cmn.e_d_tov = 0;
     sp->cmn.w2.r_a_tov = 0;
     sp->cmn.virtual_fabric_support = 0;
     sp->cls1.classValid = 0;
     if (sp->cmn.fcphLow < FC_PH3)
         sp->cmn.fcphLow = FC_PH3;
     if (sp->cmn.fcphHigh < FC_PH3)
         sp->cmn.fcphHigh = FC_PH3;
 
     /* Determine if switch supports priority tagging */
     if (phba->cfg_vmid_priority_tagging) {
         sp->cmn.priority_tagging = 1;
         /* lpfc_vmid_host_uuid is combination of wwpn and wwnn */
         if (uuid_is_null((uuid_t *)vport->lpfc_vmid_host_uuid)) {
             memcpy(vport->lpfc_vmid_host_uuid, phba->wwpn,
                    sizeof(phba->wwpn));
             memcpy(&vport->lpfc_vmid_host_uuid[8], phba->wwnn,
                    sizeof(phba->wwnn));
         }
     }
 
     if  (phba->sli_rev == LPFC_SLI_REV4) {
         if (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) ==
             LPFC_SLI_INTF_IF_TYPE_0) {
             /* FLOGI needs to be 3 for WQE FCFI */
             ct = SLI4_CT_FCFI;
             bf_set(wqe_ct, &wqe->els_req.wqe_com, ct);
 
             /* Set the fcfi to the fcfi we registered with */
             bf_set(wqe_ctxt_tag, &wqe->els_req.wqe_com,
                    phba->fcf.fcfi);
         }
 
         /* Can't do SLI4 class2 without support sequence coalescing */
         sp->cls2.classValid = 0;
         sp->cls2.seqDelivery = 0;
     } else {
         /* Historical, setting sequential-delivery bit for SLI3 */
         sp->cls2.seqDelivery = (sp->cls2.classValid) ? 1 : 0;
         sp->cls3.seqDelivery = (sp->cls3.classValid) ? 1 : 0;
         if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) {
             sp->cmn.request_multiple_Nport = 1;
             /* For FLOGI, Let FLOGI rsp set the NPortID for VPI 0 */
             icmd->ulpCt_h = 1;
             icmd->ulpCt_l = 0;
         } else {
             sp->cmn.request_multiple_Nport = 0;
         }
 
         if (phba->fc_topology != LPFC_TOPOLOGY_LOOP) {
             icmd->un.elsreq64.myID = 0;
             icmd->un.elsreq64.fl = 1;
         }
     }
 
     tmo = phba->fc_ratov;
     phba->fc_ratov = LPFC_DISC_FLOGI_TMO;
     lpfc_set_disctmo(vport);
     phba->fc_ratov = tmo;
 
     phba->fc_stat.elsXmitFLOGI++;
     elsiocb->cmd_cmpl = lpfc_cmpl_els_flogi;
 
     lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
         "Issue FLOGI:     opt:x%x",
         phba->sli3_options, 0, 0);
 
     elsiocb->ndlp = lpfc_nlp_get(ndlp);
     if (!elsiocb->ndlp) {
         lpfc_els_free_iocb(phba, elsiocb);
         return 1;
     }
 
     rc = lpfc_issue_fabric_iocb(phba, elsiocb);
     if (rc == IOCB_ERROR) {
         lpfc_els_free_iocb(phba, elsiocb);
         lpfc_nlp_put(ndlp);
         return 1;
     }
 
     phba->hba_flag |= (HBA_FLOGI_ISSUED | HBA_FLOGI_OUTSTANDING);
 
     /* Clear external loopback plug detected flag */
     phba->link_flag &= ~LS_EXTERNAL_LOOPBACK;
 
     /* Check for a deferred FLOGI ACC condition */
     if (phba->defer_flogi_acc_flag) {
         /* lookup ndlp for received FLOGI */
         ndlp = lpfc_findnode_did(vport, 0);
         if (!ndlp)
             return 0;
 
         did = vport->fc_myDID;
         vport->fc_myDID = Fabric_DID;
 
         memset(&defer_flogi_acc, 0, sizeof(struct lpfc_iocbq));
 
         if (phba->sli_rev == LPFC_SLI_REV4) {
             bf_set(wqe_ctxt_tag,
                    &defer_flogi_acc.wqe.xmit_els_rsp.wqe_com,
                    phba->defer_flogi_acc_rx_id);
             bf_set(wqe_rcvoxid,
                    &defer_flogi_acc.wqe.xmit_els_rsp.wqe_com,
                    phba->defer_flogi_acc_ox_id);
         } else {
             icmd = &defer_flogi_acc.iocb;
             icmd->ulpContext = phba->defer_flogi_acc_rx_id;
             icmd->unsli3.rcvsli3.ox_id =
                 phba->defer_flogi_acc_ox_id;
         }
 
         lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
                  "3354 Xmit deferred FLOGI ACC: rx_id: x%x,"
                  " ox_id: x%x, hba_flag x%x\n",
                  phba->defer_flogi_acc_rx_id,
                  phba->defer_flogi_acc_ox_id, phba->hba_flag);
 
         /* Send deferred FLOGI ACC */
         lpfc_els_rsp_acc(vport, ELS_CMD_FLOGI, &defer_flogi_acc,
                  ndlp, NULL);
 
         phba->defer_flogi_acc_flag = false;
         vport->fc_myDID = did;
 
         /* Decrement ndlp reference count to indicate the node can be
          * released when other references are removed.
          */
         lpfc_nlp_put(ndlp);
     }
 
     return 0;
 }
 
 /**
  * lpfc_els_abort_flogi - Abort all outstanding flogi iocbs
  * @phba: pointer to lpfc hba data structure.
  *
  * This routine aborts all the outstanding Fabric Login (FLOGI) IOCBs
  * with a @phba. This routine walks all the outstanding IOCBs on the txcmplq
  * list and issues an abort IOCB commond on each outstanding IOCB that
  * contains a active Fabric_DID ndlp. Note that this function is to issue
  * the abort IOCB command on all the outstanding IOCBs, thus when this
  * function returns, it does not guarantee all the IOCBs are actually aborted.
  *
  * Return code
  *   0 - Successfully issued abort iocb on all outstanding flogis (Always 0)
  **/
 int
 lpfc_els_abort_flogi(struct lpfc_hba *phba)
 {
     struct lpfc_sli_ring *pring;
     struct lpfc_iocbq *iocb, *next_iocb;
     struct lpfc_nodelist *ndlp;
     u32 ulp_command;
 
     /* Abort outstanding I/O on NPort <nlp_DID> */
     lpfc_printf_log(phba, KERN_INFO, LOG_DISCOVERY,
             "0201 Abort outstanding I/O on NPort x%x\n",
             Fabric_DID);
 
     pring = lpfc_phba_elsring(phba);
     if (unlikely(!pring))
         return -EIO;
 
     /*
      * Check the txcmplq for an iocb that matches the nport the driver is
      * searching for.
      */
     spin_lock_irq(&phba->hbalock);
     list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) {
         ulp_command = get_job_cmnd(phba, iocb);
         if (ulp_command == CMD_ELS_REQUEST64_CR) {
             ndlp = iocb->ndlp;
             if (ndlp && ndlp->nlp_DID == Fabric_DID) {
                 if ((phba->pport->fc_flag & FC_PT2PT) &&
                     !(phba->pport->fc_flag & FC_PT2PT_PLOGI))
                     iocb->fabric_cmd_cmpl =
                         lpfc_ignore_els_cmpl;
                 lpfc_sli_issue_abort_iotag(phba, pring, iocb,
                                NULL);
             }
         }
     }
     /* Make sure HBA is alive */
     lpfc_issue_hb_tmo(phba);
 
     spin_unlock_irq(&phba->hbalock);
 
     return 0;
 }
 
 /**
  * lpfc_initial_flogi - Issue an initial fabric login for a vport
  * @vport: pointer to a host virtual N_Port data structure.
  *
  * This routine issues an initial Fabric Login (FLOGI) for the @vport
  * specified. It first searches the ndlp with the Fabric_DID (0xfffffe) from
  * the @vport's ndlp list. If no such ndlp found, it will create an ndlp and
  * put it into the @vport's ndlp list. If an inactive ndlp found on the list,
  * it will just be enabled and made active. The lpfc_issue_els_flogi() routine
  * is then invoked with the @vport and the ndlp to perform the FLOGI for the
  * @vport.
  *
  * Return code
  *   0 - failed to issue initial flogi for @vport
  *   1 - successfully issued initial flogi for @vport
  **/
 int
 lpfc_initial_flogi(struct lpfc_vport *vport)
 {
     struct lpfc_nodelist *ndlp;
 
     vport->port_state = LPFC_FLOGI;
     lpfc_set_disctmo(vport);
 
     /* First look for the Fabric ndlp */
     ndlp = lpfc_findnode_did(vport, Fabric_DID);
     if (!ndlp) {
         /* Cannot find existing Fabric ndlp, so allocate a new one */
         ndlp = lpfc_nlp_init(vport, Fabric_DID);
         if (!ndlp)
             return 0;
         /* Set the node type */
         ndlp->nlp_type |= NLP_FABRIC;
 
         /* Put ndlp onto node list */
         lpfc_enqueue_node(vport, ndlp);
     }
 
     /* Reset the Fabric flag, topology change may have happened */
     vport->fc_flag &= ~FC_FABRIC;
     if (lpfc_issue_els_flogi(vport, ndlp, 0)) {
         /* A node reference should be retained while registered with a
          * transport or dev-loss-evt work is pending.
          * Otherwise, decrement node reference to trigger release.
          */
         if (!(ndlp->fc4_xpt_flags & (SCSI_XPT_REGD | NVME_XPT_REGD)) &&
             !(ndlp->nlp_flag & NLP_IN_DEV_LOSS))
             lpfc_nlp_put(ndlp);
         return 0;
     }
     return 1;
 }
 
 /**
  * lpfc_initial_fdisc - Issue an initial fabric discovery for a vport
  * @vport: pointer to a host virtual N_Port data structure.
  *
  * This routine issues an initial Fabric Discover (FDISC) for the @vport
  * specified. It first searches the ndlp with the Fabric_DID (0xfffffe) from
  * the @vport's ndlp list. If no such ndlp found, it will create an ndlp and
  * put it into the @vport's ndlp list. If an inactive ndlp found on the list,
  * it will just be enabled and made active. The lpfc_issue_els_fdisc() routine
  * is then invoked with the @vport and the ndlp to perform the FDISC for the
  * @vport.
  *
  * Return code
  *   0 - failed to issue initial fdisc for @vport
  *   1 - successfully issued initial fdisc for @vport
  **/
 int
 lpfc_initial_fdisc(struct lpfc_vport *vport)
 {
     struct lpfc_nodelist *ndlp;
 
     /* First look for the Fabric ndlp */
     ndlp = lpfc_findnode_did(vport, Fabric_DID);
     if (!ndlp) {
         /* Cannot find existing Fabric ndlp, so allocate a new one */
         ndlp = lpfc_nlp_init(vport, Fabric_DID);
         if (!ndlp)
             return 0;
 
         /* NPIV is only supported in Fabrics. */
         ndlp->nlp_type |= NLP_FABRIC;
 
         /* Put ndlp onto node list */
         lpfc_enqueue_node(vport, ndlp);
     }
 
     if (lpfc_issue_els_fdisc(vport, ndlp, 0)) {
         /* A node reference should be retained while registered with a
          * transport or dev-loss-evt work is pending.
          * Otherwise, decrement node reference to trigger release.
          */
         if (!(ndlp->fc4_xpt_flags & (SCSI_XPT_REGD | NVME_XPT_REGD)) &&
             !(ndlp->nlp_flag & NLP_IN_DEV_LOSS))
             lpfc_nlp_put(ndlp);
         return 0;
     }
     return 1;
 }
 
 /**
  * lpfc_more_plogi - Check and issue remaining plogis for a vport
  * @vport: pointer to a host virtual N_Port data structure.
  *
  * This routine checks whether there are more remaining Port Logins
  * (PLOGI) to be issued for the @vport. If so, it will invoke the routine
  * lpfc_els_disc_plogi() to go through the Node Port Recovery (NPR) nodes
  * to issue ELS PLOGIs up to the configured discover threads with the
  * @vport (@vport->cfg_discovery_threads). The function also decrement
  * the @vport's num_disc_node by 1 if it is not already 0.
  **/
 void
 lpfc_more_plogi(struct lpfc_vport *vport)
 {
     if (vport->num_disc_nodes)
         vport->num_disc_nodes--;
 
     /* Continue discovery with <num_disc_nodes> PLOGIs to go */
     lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
              "0232 Continue discovery with %d PLOGIs to go "
              "Data: x%x x%x x%x\n",
              vport->num_disc_nodes, vport->fc_plogi_cnt,
              vport->fc_flag, vport->port_state);
     /* Check to see if there are more PLOGIs to be sent */
     if (vport->fc_flag & FC_NLP_MORE)
         /* go thru NPR nodes and issue any remaining ELS PLOGIs */
         lpfc_els_disc_plogi(vport);
 
     return;
 }
 
 /**
  * lpfc_plogi_confirm_nport - Confirm plogi wwpn matches stored ndlp
  * @phba: pointer to lpfc hba data structure.
  * @prsp: pointer to response IOCB payload.
  * @ndlp: pointer to a node-list data structure.
  *
  * This routine checks and indicates whether the WWPN of an N_Port, retrieved
  * from a PLOGI, matches the WWPN that is stored in the @ndlp for that N_POrt.
  * The following cases are considered N_Port confirmed:
  * 1) The N_Port is a Fabric ndlp; 2) The @ndlp is on vport list and matches
  * the WWPN of the N_Port logged into; 3) The @ndlp is not on vport list but
  * it does not have WWPN assigned either. If the WWPN is confirmed, the
  * pointer to the @ndlp will be returned. If the WWPN is not confirmed:
  * 1) if there is a node on vport list other than the @ndlp with the same
  * WWPN of the N_Port PLOGI logged into, the lpfc_unreg_rpi() will be invoked
  * on that node to release the RPI associated with the node; 2) if there is
  * no node found on vport list with the same WWPN of the N_Port PLOGI logged
  * into, a new node shall be allocated (or activated). In either case, the
  * parameters of the @ndlp shall be copied to the new_ndlp, the @ndlp shall
  * be released and the new_ndlp shall be put on to the vport node list and
  * its pointer returned as the confirmed node.
  *
  * Note that before the @ndlp got "released", the keepDID from not-matching
  * or inactive "new_ndlp" on the vport node list is assigned to the nlp_DID
  * of the @ndlp. This is because the release of @ndlp is actually to put it
  * into an inactive state on the vport node list and the vport node list
  * management algorithm does not allow two node with a same DID.
  *
  * Return code
  *   pointer to the PLOGI N_Port @ndlp
  **/
 static struct lpfc_nodelist *
 lpfc_plogi_confirm_nport(struct lpfc_hba *phba, uint32_t *prsp,
              struct lpfc_nodelist *ndlp)
 {
     struct lpfc_vport *vport = ndlp->vport;
     struct lpfc_nodelist *new_ndlp;
     struct serv_parm *sp;
     uint8_t  name[sizeof(struct lpfc_name)];
     uint32_t keepDID = 0, keep_nlp_flag = 0;
     uint32_t keep_new_nlp_flag = 0;
     uint16_t keep_nlp_state;
     u32 keep_nlp_fc4_type = 0;
     struct lpfc_nvme_rport *keep_nrport = NULL;
     unsigned long *active_rrqs_xri_bitmap = NULL;
 
     /* Fabric nodes can have the same WWPN so we don't bother searching
      * by WWPN.  Just return the ndlp that was given to us.
      */
     if (ndlp->nlp_type & NLP_FABRIC)
         return ndlp;
 
     sp = (struct serv_parm *) ((uint8_t *) prsp + sizeof(uint32_t));
     memset(name, 0, sizeof(struct lpfc_name));
 
     /* Now we find out if the NPort we are logging into, matches the WWPN
      * we have for that ndlp. If not, we have some work to do.
      */
     new_ndlp = lpfc_findnode_wwpn(vport, &sp->portName);
 
     /* return immediately if the WWPN matches ndlp */
     if (!new_ndlp || (new_ndlp == ndlp))
         return ndlp;
 
     /*
      * Unregister from backend if not done yet. Could have been skipped
      * due to ADISC
      */
     lpfc_nlp_unreg_node(vport, new_ndlp);
 
     if (phba->sli_rev == LPFC_SLI_REV4) {
         active_rrqs_xri_bitmap = mempool_alloc(phba->active_rrq_pool,
                                GFP_KERNEL);
         if (active_rrqs_xri_bitmap)
             memset(active_rrqs_xri_bitmap, 0,
                    phba->cfg_rrq_xri_bitmap_sz);
     }
 
     lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS | LOG_NODE,
              "3178 PLOGI confirm: ndlp x%x x%x x%x: "
              "new_ndlp x%x x%x x%x\n",
              ndlp->nlp_DID, ndlp->nlp_flag,  ndlp->nlp_fc4_type,
              (new_ndlp ? new_ndlp->nlp_DID : 0),
              (new_ndlp ? new_ndlp->nlp_flag : 0),
              (new_ndlp ? new_ndlp->nlp_fc4_type : 0));
 
     keepDID = new_ndlp->nlp_DID;
 
     if (phba->sli_rev == LPFC_SLI_REV4 && active_rrqs_xri_bitmap)
         memcpy(active_rrqs_xri_bitmap, new_ndlp->active_rrqs_xri_bitmap,
                phba->cfg_rrq_xri_bitmap_sz);
 
     /* At this point in this routine, we know new_ndlp will be
      * returned. however, any previous GID_FTs that were done
      * would have updated nlp_fc4_type in ndlp, so we must ensure
      * new_ndlp has the right value.
      */
     if (vport->fc_flag & FC_FABRIC) {
         keep_nlp_fc4_type = new_ndlp->nlp_fc4_type;
         new_ndlp->nlp_fc4_type = ndlp->nlp_fc4_type;
     }
 
     lpfc_unreg_rpi(vport, new_ndlp);
     new_ndlp->nlp_DID = ndlp->nlp_DID;
     new_ndlp->nlp_prev_state = ndlp->nlp_prev_state;
     if (phba->sli_rev == LPFC_SLI_REV4)
         memcpy(new_ndlp->active_rrqs_xri_bitmap,
                ndlp->active_rrqs_xri_bitmap,
                phba->cfg_rrq_xri_bitmap_sz);
 
     /* Lock both ndlps */
     spin_lock_irq(&ndlp->lock);
     spin_lock_irq(&new_ndlp->lock);
     keep_new_nlp_flag = new_ndlp->nlp_flag;
     keep_nlp_flag = ndlp->nlp_flag;
     new_ndlp->nlp_flag = ndlp->nlp_flag;
 
     /* if new_ndlp had NLP_UNREG_INP set, keep it */
     if (keep_new_nlp_flag & NLP_UNREG_INP)
         new_ndlp->nlp_flag |= NLP_UNREG_INP;
     else
         new_ndlp->nlp_flag &= ~NLP_UNREG_INP;
 
     /* if new_ndlp had NLP_RPI_REGISTERED set, keep it */
     if (keep_new_nlp_flag & NLP_RPI_REGISTERED)
         new_ndlp->nlp_flag |= NLP_RPI_REGISTERED;
     else
         new_ndlp->nlp_flag &= ~NLP_RPI_REGISTERED;
 
     /*
      * Retain the DROPPED flag. This will take care of the init
      * refcount when affecting the state change
      */
     if (keep_new_nlp_flag & NLP_DROPPED)
         new_ndlp->nlp_flag |= NLP_DROPPED;
     else
         new_ndlp->nlp_flag &= ~NLP_DROPPED;
 
     ndlp->nlp_flag = keep_new_nlp_flag;
 
     /* if ndlp had NLP_UNREG_INP set, keep it */
     if (keep_nlp_flag & NLP_UNREG_INP)
         ndlp->nlp_flag |= NLP_UNREG_INP;
     else
         ndlp->nlp_flag &= ~NLP_UNREG_INP;
 
     /* if ndlp had NLP_RPI_REGISTERED set, keep it */
     if (keep_nlp_flag & NLP_RPI_REGISTERED)
         ndlp->nlp_flag |= NLP_RPI_REGISTERED;
     else
         ndlp->nlp_flag &= ~NLP_RPI_REGISTERED;
 
     /*
      * Retain the DROPPED flag. This will take care of the init
      * refcount when affecting the state change
      */
     if (keep_nlp_flag & NLP_DROPPED)
         ndlp->nlp_flag |= NLP_DROPPED;
     else
         ndlp->nlp_flag &= ~NLP_DROPPED;
 
     spin_unlock_irq(&new_ndlp->lock);
     spin_unlock_irq(&ndlp->lock);
 
     /* Set nlp_states accordingly */
     keep_nlp_state = new_ndlp->nlp_state;
     lpfc_nlp_set_state(vport, new_ndlp, ndlp->nlp_state);
 
     /* interchange the nvme remoteport structs */
     keep_nrport = new_ndlp->nrport;
     new_ndlp->nrport = ndlp->nrport;
 
     /* Move this back to NPR state */
     if (memcmp(&ndlp->nlp_portname, name, sizeof(struct lpfc_name)) == 0) {
         /* The ndlp doesn't have a portname yet, but does have an
          * NPort ID.  The new_ndlp portname matches the Rport's
          * portname.  Reinstantiate the new_ndlp and reset the ndlp.
          */
         lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
              "3179 PLOGI confirm NEW: %x %x\n",
              new_ndlp->nlp_DID, keepDID);
 
         /* Two ndlps cannot have the same did on the nodelist.
          * The KeepDID and keep_nlp_fc4_type need to be swapped
          * because ndlp is inflight with no WWPN.
          */
         ndlp->nlp_DID = keepDID;
         ndlp->nlp_fc4_type = keep_nlp_fc4_type;
         lpfc_nlp_set_state(vport, ndlp, keep_nlp_state);
         if (phba->sli_rev == LPFC_SLI_REV4 &&
             active_rrqs_xri_bitmap)
             memcpy(ndlp->active_rrqs_xri_bitmap,
                    active_rrqs_xri_bitmap,
                    phba->cfg_rrq_xri_bitmap_sz);
 
     } else {
         lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
              "3180 PLOGI confirm SWAP: %x %x\n",
              new_ndlp->nlp_DID, keepDID);
 
         lpfc_unreg_rpi(vport, ndlp);
 
         /* The ndlp and new_ndlp both have WWPNs but are swapping
          * NPort Ids and attributes.
          */
         ndlp->nlp_DID = keepDID;
         ndlp->nlp_fc4_type = keep_nlp_fc4_type;
 
         if (phba->sli_rev == LPFC_SLI_REV4 &&
             active_rrqs_xri_bitmap)
             memcpy(ndlp->active_rrqs_xri_bitmap,
                    active_rrqs_xri_bitmap,
                    phba->cfg_rrq_xri_bitmap_sz);
 
         /* Since we are switching over to the new_ndlp,
          * reset the old ndlp state
          */
         if ((ndlp->nlp_state == NLP_STE_UNMAPPED_NODE) ||
             (ndlp->nlp_state == NLP_STE_MAPPED_NODE))
             keep_nlp_state = NLP_STE_NPR_NODE;
         lpfc_nlp_set_state(vport, ndlp, keep_nlp_state);
         ndlp->nrport = keep_nrport;
     }
 
     /*
      * If ndlp is not associated with any rport we can drop it here else
      * let dev_loss_tmo_callbk trigger DEVICE_RM event
      */
     if (!ndlp->rport && (ndlp->nlp_state == NLP_STE_NPR_NODE))
         lpfc_disc_state_machine(vport, ndlp, NULL, NLP_EVT_DEVICE_RM);
 
     if (phba->sli_rev == LPFC_SLI_REV4 &&
         active_rrqs_xri_bitmap)
         mempool_free(active_rrqs_xri_bitmap,
                  phba->active_rrq_pool);
 
     lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS | LOG_NODE,
              "3173 PLOGI confirm exit: new_ndlp x%x x%x x%x\n",
              new_ndlp->nlp_DID, new_ndlp->nlp_flag,
              new_ndlp->nlp_fc4_type);
 
     return new_ndlp;
 }
 
 /**
  * lpfc_end_rscn - Check and handle more rscn for a vport
  * @vport: pointer to a host virtual N_Port data structure.
  *
  * This routine checks whether more Registration State Change
  * Notifications (RSCNs) came in while the discovery state machine was in
  * the FC_RSCN_MODE. If so, the lpfc_els_handle_rscn() routine will be
  * invoked to handle the additional RSCNs for the @vport. Otherwise, the
  * FC_RSCN_MODE bit will be cleared with the @vport to mark as the end of
  * handling the RSCNs.
  **/
 void
 lpfc_end_rscn(struct lpfc_vport *vport)
 {
     struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
 
     if (vport->fc_flag & FC_RSCN_MODE) {
         /*
          * Check to see if more RSCNs came in while we were
          * processing this one.
          */
         if (vport->fc_rscn_id_cnt ||
             (vport->fc_flag & FC_RSCN_DISCOVERY) != 0)
             lpfc_els_handle_rscn(vport);
         else {
             spin_lock_irq(shost->host_lock);
             vport->fc_flag &= ~FC_RSCN_MODE;
             spin_unlock_irq(shost->host_lock);
         }
     }
 }
 
 /**
  * lpfc_cmpl_els_rrq - Completion handled for els RRQs.
  * @phba: pointer to lpfc hba data structure.
  * @cmdiocb: pointer to lpfc command iocb data structure.
  * @rspiocb: pointer to lpfc response iocb data structure.
  *
  * This routine will call the clear rrq function to free the rrq and
  * clear the xri's bit in the ndlp's xri_bitmap. If the ndlp does not
  * exist then the clear_rrq is still called because the rrq needs to
  * be freed.
  **/
 
 static void
 lpfc_cmpl_els_rrq(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
           struct lpfc_iocbq *rspiocb)
 {
     struct lpfc_vport *vport = cmdiocb->vport;
     struct lpfc_nodelist *ndlp = cmdiocb->ndlp;
     struct lpfc_node_rrq *rrq;
     u32 ulp_status = get_job_ulpstatus(phba, rspiocb);
     u32 ulp_word4 = get_job_word4(phba, rspiocb);
 
     /* we pass cmdiocb to state machine which needs rspiocb as well */
     rrq = cmdiocb->context_un.rrq;
     cmdiocb->rsp_iocb = rspiocb;
 
     lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
         "RRQ cmpl:      status:x%x/x%x did:x%x",
         ulp_status, ulp_word4,
         get_job_els_rsp64_did(phba, cmdiocb));
 
 
     /* rrq completes to NPort <nlp_DID> */
     lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
              "2880 RRQ completes to DID x%x "
              "Data: x%x x%x x%x x%x x%x\n",
              ndlp->nlp_DID, ulp_status, ulp_word4,
              get_wqe_tmo(cmdiocb), rrq->xritag, rrq->rxid);
 
     if (ulp_status) {
         /* Check for retry */
         /* RRQ failed Don't print the vport to vport rjts */
         if (ulp_status != IOSTAT_LS_RJT ||
             (((ulp_word4) >> 16 != LSRJT_INVALID_CMD) &&
              ((ulp_word4) >> 16 != LSRJT_UNABLE_TPC)) ||
             (phba)->pport->cfg_log_verbose & LOG_ELS)
             lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
                      "2881 RRQ failure DID:%06X Status:"
                      "x%x/x%x\n",
                      ndlp->nlp_DID, ulp_status,
                      ulp_word4);
     }
 
     lpfc_clr_rrq_active(phba, rrq->xritag, rrq);
     lpfc_els_free_iocb(phba, cmdiocb);
     lpfc_nlp_put(ndlp);
     return;
 }
 /**
  * lpfc_cmpl_els_plogi - Completion callback function for plogi
  * @phba: pointer to lpfc hba data structure.
  * @cmdiocb: pointer to lpfc command iocb data structure.
  * @rspiocb: pointer to lpfc response iocb data structure.
  *
  * This routine is the completion callback function for issuing the Port
  * Login (PLOGI) command. For PLOGI completion, there must be an active
  * ndlp on the vport node list that matches the remote node ID from the
  * PLOGI response IOCB. If such ndlp does not exist, the PLOGI is simply
  * ignored and command IOCB released. The PLOGI response IOCB status is
  * checked for error conditions. If there is error status reported, PLOGI
  * retry shall be attempted by invoking the lpfc_els_retry() routine.
  * Otherwise, the lpfc_plogi_confirm_nport() routine shall be invoked on
  * the ndlp and the NLP_EVT_CMPL_PLOGI state to the Discover State Machine
  * (DSM) is set for this PLOGI completion. Finally, it checks whether
  * there are additional N_Port nodes with the vport that need to perform
  * PLOGI. If so, the lpfc_more_plogi() routine is invoked to issue addition
  * PLOGIs.
  **/
 static void
 lpfc_cmpl_els_plogi(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
             struct lpfc_iocbq *rspiocb)
 {
     struct lpfc_vport *vport = cmdiocb->vport;
     struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
     IOCB_t *irsp;
     struct lpfc_nodelist *ndlp, *free_ndlp;
     struct lpfc_dmabuf *prsp;
     int disc;
     struct serv_parm *sp = NULL;
     u32 ulp_status, ulp_word4, did, iotag;
     bool release_node = false;
 
     /* we pass cmdiocb to state machine which needs rspiocb as well */
     cmdiocb->rsp_iocb = rspiocb;
 
     ulp_status = get_job_ulpstatus(phba, rspiocb);
     ulp_word4 = get_job_word4(phba, rspiocb);
     did = get_job_els_rsp64_did(phba, cmdiocb);
 
     if (phba->sli_rev == LPFC_SLI_REV4) {
         iotag = get_wqe_reqtag(cmdiocb);
     } else {
         irsp = &rspiocb->iocb;
         iotag = irsp->ulpIoTag;
     }
 
     lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
         "PLOGI cmpl:      status:x%x/x%x did:x%x",
         ulp_status, ulp_word4, did);
 
     ndlp = lpfc_findnode_did(vport, did);
     if (!ndlp) {
         lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
                  "0136 PLOGI completes to NPort x%x "
                  "with no ndlp. Data: x%x x%x x%x\n",
                  did, ulp_status, ulp_word4, iotag);
         goto out_freeiocb;
     }
 
     /* Since ndlp can be freed in the disc state machine, note if this node
      * is being used during discovery.
      */
     spin_lock_irq(&ndlp->lock);
     disc = (ndlp->nlp_flag & NLP_NPR_2B_DISC);
     ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
     spin_unlock_irq(&ndlp->lock);
 
     /* PLOGI completes to NPort <nlp_DID> */
     lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
              "0102 PLOGI completes to NPort x%06x "
              "Data: x%x x%x x%x x%x x%x\n",
              ndlp->nlp_DID, ndlp->nlp_fc4_type,
              ulp_status, ulp_word4,
              disc, vport->num_disc_nodes);
 
     /* Check to see if link went down during discovery */
     if (lpfc_els_chk_latt(vport)) {
         spin_lock_irq(&ndlp->lock);
         ndlp->nlp_flag |= NLP_NPR_2B_DISC;
         spin_unlock_irq(&ndlp->lock);
         goto out;
     }
 
     if (ulp_status) {
         /* Check for retry */
         if (lpfc_els_retry(phba, cmdiocb, rspiocb)) {
             /* ELS command is being retried */
             if (disc) {
                 spin_lock_irq(&ndlp->lock);
                 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
                 spin_unlock_irq(&ndlp->lock);
             }
             goto out;
         }
         /* PLOGI failed Don't print the vport to vport rjts */
         if (ulp_status != IOSTAT_LS_RJT ||
             (((ulp_word4) >> 16 != LSRJT_INVALID_CMD) &&
              ((ulp_word4) >> 16 != LSRJT_UNABLE_TPC)) ||
             (phba)->pport->cfg_log_verbose & LOG_ELS)
             lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
                      "2753 PLOGI failure DID:%06X "
                      "Status:x%x/x%x\n",
                      ndlp->nlp_DID, ulp_status,
                      ulp_word4);
 
         /* Do not call DSM for lpfc_els_abort'ed ELS cmds */
         if (!lpfc_error_lost_link(ulp_status, ulp_word4))
             lpfc_disc_state_machine(vport, ndlp, cmdiocb,
                         NLP_EVT_CMPL_PLOGI);
 
         /* If a PLOGI collision occurred, the node needs to continue
          * with the reglogin process.
          */
         spin_lock_irq(&ndlp->lock);
         if ((ndlp->nlp_flag & (NLP_ACC_REGLOGIN | NLP_RCV_PLOGI)) &&
             ndlp->nlp_state == NLP_STE_REG_LOGIN_ISSUE) {
             spin_unlock_irq(&ndlp->lock);
             goto out;
         }
 
         /* No PLOGI collision and the node is not registered with the
          * scsi or nvme transport. It is no longer an active node. Just
          * start the device remove process.
          */
         if (!(ndlp->fc4_xpt_flags & (SCSI_XPT_REGD | NVME_XPT_REGD))) {
             ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
             if (!(ndlp->nlp_flag & NLP_IN_DEV_LOSS))
                 release_node = true;
         }
         spin_unlock_irq(&ndlp->lock);
 
         if (release_node)
             lpfc_disc_state_machine(vport, ndlp, cmdiocb,
                         NLP_EVT_DEVICE_RM);
     } else {
         /* Good status, call state machine */
         prsp = list_entry(cmdiocb->cmd_dmabuf->list.next,
                   struct lpfc_dmabuf, list);
         ndlp = lpfc_plogi_confirm_nport(phba, prsp->virt, ndlp);
 
         sp = (struct serv_parm *)((u8 *)prsp->virt +
                       sizeof(u32));
 
         ndlp->vmid_support = 0;
         if ((phba->cfg_vmid_app_header && sp->cmn.app_hdr_support) ||
             (phba->cfg_vmid_priority_tagging &&
              sp->cmn.priority_tagging)) {
             lpfc_printf_log(phba, KERN_DEBUG, LOG_ELS,
                     "4018 app_hdr_support %d tagging %d DID x%x\n",
                     sp->cmn.app_hdr_support,
                     sp->cmn.priority_tagging,
                     ndlp->nlp_DID);
             /* if the dest port supports VMID, mark it in ndlp */
             ndlp->vmid_support = 1;
         }
 
         lpfc_disc_state_machine(vport, ndlp, cmdiocb,
                     NLP_EVT_CMPL_PLOGI);
     }
 
     if (disc && vport->num_disc_nodes) {
         /* Check to see if there are more PLOGIs to be sent */
         lpfc_more_plogi(vport);
 
         if (vport->num_disc_nodes == 0) {
             spin_lock_irq(shost->host_lock);
             vport->fc_flag &= ~FC_NDISC_ACTIVE;
             spin_unlock_irq(shost->host_lock);
 
             lpfc_can_disctmo(vport);
             lpfc_end_rscn(vport);
         }
     }
 
 out:
     lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
                   "PLOGI Cmpl PUT:     did:x%x refcnt %d",
                   ndlp->nlp_DID, kref_read(&ndlp->kref), 0);
 
 out_freeiocb:
     /* Release the reference on the original I/O request. */
     free_ndlp = cmdiocb->ndlp;
 
     lpfc_els_free_iocb(phba, cmdiocb);
     lpfc_nlp_put(free_ndlp);
     return;
 }
 
 /**
  * lpfc_issue_els_plogi - Issue an plogi iocb command for a vport
  * @vport: pointer to a host virtual N_Port data structure.
  * @did: destination port identifier.
  * @retry: number of retries to the command IOCB.
  *
  * This routine issues a Port Login (PLOGI) command to a remote N_Port
  * (with the @did) for a @vport. Before issuing a PLOGI to a remote N_Port,
  * the ndlp with the remote N_Port DID must exist on the @vport's ndlp list.
  * This routine constructs the proper fields of the PLOGI IOCB and invokes
  * the lpfc_sli_issue_iocb() routine to send out PLOGI ELS command.
  *
  * Note that the ndlp reference count will be incremented by 1 for holding
  * the ndlp and the reference to ndlp will be stored into the ndlp field
  * of the IOCB for the completion callback function to the PLOGI ELS command.
  *
  * Return code
  *   0 - Successfully issued a plogi for @vport
  *   1 - failed to issue a plogi for @vport
  **/
 int
 lpfc_issue_els_plogi(struct lpfc_vport *vport, uint32_t did, uint8_t retry)
 {
     struct lpfc_hba  *phba = vport->phba;
     struct serv_parm *sp;
     struct lpfc_nodelist *ndlp;
     struct lpfc_iocbq *elsiocb;
     uint8_t *pcmd;
     uint16_t cmdsize;
     int ret;
 
     ndlp = lpfc_findnode_did(vport, did);
     if (!ndlp)
         return 1;
 
     /* Defer the processing of the issue PLOGI until after the
      * outstanding UNREG_RPI mbox command completes, unless we
      * are going offline. This logic does not apply for Fabric DIDs
      */
     if ((ndlp->nlp_flag & NLP_UNREG_INP) &&
         ((ndlp->nlp_DID & Fabric_DID_MASK) != Fabric_DID_MASK) &&
         !(vport->fc_flag & FC_OFFLINE_MODE)) {
         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
                  "4110 Issue PLOGI x%x deferred "
                  "on NPort x%x rpi x%x Data: x%px\n",
                  ndlp->nlp_defer_did, ndlp->nlp_DID,
                  ndlp->nlp_rpi, ndlp);
 
         /* We can only defer 1st PLOGI */
         if (ndlp->nlp_defer_did == NLP_EVT_NOTHING_PENDING)
             ndlp->nlp_defer_did = did;
         return 0;
     }
 
     cmdsize = (sizeof(uint32_t) + sizeof(struct serv_parm));
     elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp, did,
                      ELS_CMD_PLOGI);
     if (!elsiocb)
         return 1;
 
     spin_lock_irq(&ndlp->lock);
     ndlp->nlp_flag &= ~NLP_FCP_PRLI_RJT;
     spin_unlock_irq(&ndlp->lock);
 
     pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt;
 
     /* For PLOGI request, remainder of payload is service parameters */
     *((uint32_t *) (pcmd)) = ELS_CMD_PLOGI;
     pcmd += sizeof(uint32_t);
     memcpy(pcmd, &vport->fc_sparam, sizeof(struct serv_parm));
     sp = (struct serv_parm *) pcmd;
 
     /*
      * If we are a N-port connected to a Fabric, fix-up paramm's so logins
      * to device on remote loops work.
      */
     if ((vport->fc_flag & FC_FABRIC) && !(vport->fc_flag & FC_PUBLIC_LOOP))
         sp->cmn.altBbCredit = 1;
 
     if (sp->cmn.fcphLow < FC_PH_4_3)
         sp->cmn.fcphLow = FC_PH_4_3;
 
     if (sp->cmn.fcphHigh < FC_PH3)
         sp->cmn.fcphHigh = FC_PH3;
 
     sp->cmn.valid_vendor_ver_level = 0;
     memset(sp->un.vendorVersion, 0, sizeof(sp->un.vendorVersion));
     sp->cmn.bbRcvSizeMsb &= 0xF;
 
     /* Check if the destination port supports VMID */
     ndlp->vmid_support = 0;
     if (vport->vmid_priority_tagging)
         sp->cmn.priority_tagging = 1;
     else if (phba->cfg_vmid_app_header &&
          bf_get(lpfc_ftr_ashdr, &phba->sli4_hba.sli4_flags))
         sp->cmn.app_hdr_support = 1;
 
     lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
         "Issue PLOGI:     did:x%x",
         did, 0, 0);
 
     /* If our firmware supports this feature, convey that
      * information to the target using the vendor specific field.
      */
     if (phba->sli.sli_flag & LPFC_SLI_SUPPRESS_RSP) {
         sp->cmn.valid_vendor_ver_level = 1;
         sp->un.vv.vid = cpu_to_be32(LPFC_VV_EMLX_ID);
         sp->un.vv.flags = cpu_to_be32(LPFC_VV_SUPPRESS_RSP);
     }
 
     phba->fc_stat.elsXmitPLOGI++;
     elsiocb->cmd_cmpl = lpfc_cmpl_els_plogi;
 
     lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
                   "Issue PLOGI:     did:x%x refcnt %d",
                   did, kref_read(&ndlp->kref), 0);
     elsiocb->ndlp = lpfc_nlp_get(ndlp);
     if (!elsiocb->ndlp) {
         lpfc_els_free_iocb(phba, elsiocb);
         return 1;
     }
 
     ret = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
     if (ret) {
         lpfc_els_free_iocb(phba, elsiocb);
         lpfc_nlp_put(ndlp);
         return 1;
     }
 
     return 0;
 }
 
 /**
  * lpfc_cmpl_els_prli - Completion callback function for prli
  * @phba: pointer to lpfc hba data structure.
  * @cmdiocb: pointer to lpfc command iocb data structure.
  * @rspiocb: pointer to lpfc response iocb data structure.
  *
  * This routine is the completion callback function for a Process Login
  * (PRLI) ELS command. The PRLI response IOCB status is checked for error
  * status. If there is error status reported, PRLI retry shall be attempted
  * by invoking the lpfc_els_retry() routine. Otherwise, the state
  * NLP_EVT_CMPL_PRLI is sent to the Discover State Machine (DSM) for this
  * ndlp to mark the PRLI completion.
  **/
 static void
 lpfc_cmpl_els_prli(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
            struct lpfc_iocbq *rspiocb)
 {
     struct lpfc_vport *vport = cmdiocb->vport;
     struct lpfc_nodelist *ndlp;
     char *mode;
     u32 loglevel;
     u32 ulp_status;
     u32 ulp_word4;
     bool release_node = false;
 
     /* we pass cmdiocb to state machine which needs rspiocb as well */
     cmdiocb->rsp_iocb = rspiocb;
 
     ndlp = cmdiocb->ndlp;
 
     ulp_status = get_job_ulpstatus(phba, rspiocb);
     ulp_word4 = get_job_word4(phba, rspiocb);
 
     spin_lock_irq(&ndlp->lock);
     ndlp->nlp_flag &= ~NLP_PRLI_SND;
 
     /* Driver supports multiple FC4 types.  Counters matter. */
     vport->fc_prli_sent--;
     ndlp->fc4_prli_sent--;
     spin_unlock_irq(&ndlp->lock);
 
     lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
         "PRLI cmpl:       status:x%x/x%x did:x%x",
         ulp_status, ulp_word4,
         ndlp->nlp_DID);
 
     /* PRLI completes to NPort <nlp_DID> */
     lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
              "0103 PRLI completes to NPort x%06x "
              "Data: x%x x%x x%x x%x\n",
              ndlp->nlp_DID, ulp_status, ulp_word4,
              vport->num_disc_nodes, ndlp->fc4_prli_sent);
 
     /* Check to see if link went down during discovery */
     if (lpfc_els_chk_latt(vport))
         goto out;
 
     if (ulp_status) {
         /* Check for retry */
         if (lpfc_els_retry(phba, cmdiocb, rspiocb)) {
             /* ELS command is being retried */
             goto out;
         }
 
         /* If we don't send GFT_ID to Fabric, a PRLI error
          * could be expected.
          */
         if ((vport->fc_flag & FC_FABRIC) ||
             (vport->cfg_enable_fc4_type != LPFC_ENABLE_BOTH)) {
             mode = KERN_ERR;
             loglevel =  LOG_TRACE_EVENT;
         } else {
             mode = KERN_INFO;
             loglevel =  LOG_ELS;
         }
 
         /* PRLI failed */
         lpfc_printf_vlog(vport, mode, loglevel,
                  "2754 PRLI failure DID:%06X Status:x%x/x%x, "
                  "data: x%x\n",
                  ndlp->nlp_DID, ulp_status,
                  ulp_word4, ndlp->fc4_prli_sent);
 
         /* Do not call DSM for lpfc_els_abort'ed ELS cmds */
         if (!lpfc_error_lost_link(ulp_status, ulp_word4))
             lpfc_disc_state_machine(vport, ndlp, cmdiocb,
                         NLP_EVT_CMPL_PRLI);
 
         /*
          * For P2P topology, retain the node so that PLOGI can be
          * attempted on it again.
          */
         if (vport->fc_flag & FC_PT2PT)
             goto out;
 
         /* As long as this node is not registered with the SCSI
          * or NVMe transport and no other PRLIs are outstanding,
          * it is no longer an active node.  Otherwise devloss
          * handles the final cleanup.
          */
         spin_lock_irq(&ndlp->lock);
         if (!(ndlp->fc4_xpt_flags & (SCSI_XPT_REGD | NVME_XPT_REGD)) &&
             !ndlp->fc4_prli_sent) {
             ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
             if (!(ndlp->nlp_flag & NLP_IN_DEV_LOSS))
                 release_node = true;
         }
         spin_unlock_irq(&ndlp->lock);
 
         if (release_node)
             lpfc_disc_state_machine(vport, ndlp, cmdiocb,
                         NLP_EVT_DEVICE_RM);
     } else {
         /* Good status, call state machine.  However, if another
          * PRLI is outstanding, don't call the state machine
          * because final disposition to Mapped or Unmapped is
          * completed there.
          */
         lpfc_disc_state_machine(vport, ndlp, cmdiocb,
                     NLP_EVT_CMPL_PRLI);
     }
 
 out:
     lpfc_els_free_iocb(phba, cmdiocb);
     lpfc_nlp_put(ndlp);
     return;
 }
 
 /**
  * lpfc_issue_els_prli - Issue a prli iocb command for a vport
  * @vport: pointer to a host virtual N_Port data structure.
  * @ndlp: pointer to a node-list data structure.
  * @retry: number of retries to the command IOCB.
  *
  * This routine issues a Process Login (PRLI) ELS command for the
  * @vport. The PRLI service parameters are set up in the payload of the
  * PRLI Request command and the pointer to lpfc_cmpl_els_prli() routine
  * is put to the IOCB completion callback func field before invoking the
  * routine lpfc_sli_issue_iocb() to send out PRLI command.
  *
  * Note that the ndlp reference count will be incremented by 1 for holding the
  * ndlp and the reference to ndlp will be stored into the ndlp field of
  * the IOCB for the completion callback function to the PRLI ELS command.
  *
  * Return code
  *   0 - successfully issued prli iocb command for @vport
  *   1 - failed to issue prli iocb command for @vport
  **/
 int
 lpfc_issue_els_prli(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
             uint8_t retry)
 {
     int rc = 0;
     struct lpfc_hba *phba = vport->phba;
     PRLI *npr;
     struct lpfc_nvme_prli *npr_nvme;
     struct lpfc_iocbq *elsiocb;
     uint8_t *pcmd;
     uint16_t cmdsize;
     u32 local_nlp_type, elscmd;
 
     /*
      * If we are in RSCN mode, the FC4 types supported from a
      * previous GFT_ID command may not be accurate. So, if we
      * are a NVME Initiator, always look for the possibility of
      * the remote NPort beng a NVME Target.
      */
     if (phba->sli_rev == LPFC_SLI_REV4 &&
         vport->fc_flag & FC_RSCN_MODE &&
         vport->nvmei_support)
         ndlp->nlp_fc4_type |= NLP_FC4_NVME;
     local_nlp_type = ndlp->nlp_fc4_type;
 
     /* This routine will issue 1 or 2 PRLIs, so zero all the ndlp
      * fields here before any of them can complete.
      */
     ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
     ndlp->nlp_type &= ~(NLP_NVME_TARGET | NLP_NVME_INITIATOR);
     ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE;
     ndlp->nlp_flag &= ~(NLP_FIRSTBURST | NLP_NPR_2B_DISC);
     ndlp->nvme_fb_size = 0;
 
  send_next_prli:
     if (local_nlp_type & NLP_FC4_FCP) {
         /* Payload is 4 + 16 = 20 x14 bytes. */
         cmdsize = (sizeof(uint32_t) + sizeof(PRLI));
         elscmd = ELS_CMD_PRLI;
     } else if (local_nlp_type & NLP_FC4_NVME) {
         /* Payload is 4 + 20 = 24 x18 bytes. */
         cmdsize = (sizeof(uint32_t) + sizeof(struct lpfc_nvme_prli));
         elscmd = ELS_CMD_NVMEPRLI;
     } else {
         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
                  "3083 Unknown FC_TYPE x%x ndlp x%06x\n",
                  ndlp->nlp_fc4_type, ndlp->nlp_DID);
         return 1;
     }
 
     /* SLI3 ports don't support NVME.  If this rport is a strict NVME
      * FC4 type, implicitly LOGO.
      */
     if (phba->sli_rev == LPFC_SLI_REV3 &&
         ndlp->nlp_fc4_type == NLP_FC4_NVME) {
         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
                  "3088 Rport fc4 type 0x%x not supported by SLI3 adapter\n",
                  ndlp->nlp_type);
         lpfc_disc_state_machine(vport, ndlp, NULL, NLP_EVT_DEVICE_RM);
         return 1;
     }
 
     elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp,
                      ndlp->nlp_DID, elscmd);
     if (!elsiocb)
         return 1;
 
     pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt;
 
     /* For PRLI request, remainder of payload is service parameters */
     memset(pcmd, 0, cmdsize);
 
     if (local_nlp_type & NLP_FC4_FCP) {
         /* Remainder of payload is FCP PRLI parameter page.
          * Note: this data structure is defined as
          * BE/LE in the structure definition so no
          * byte swap call is made.
          */
         *((uint32_t *)(pcmd)) = ELS_CMD_PRLI;
         pcmd += sizeof(uint32_t);
         npr = (PRLI *)pcmd;
 
         /*
          * If our firmware version is 3.20 or later,
          * set the following bits for FC-TAPE support.
          */
         if (phba->vpd.rev.feaLevelHigh >= 0x02) {
             npr->ConfmComplAllowed = 1;
             npr->Retry = 1;
             npr->TaskRetryIdReq = 1;
         }
         npr->estabImagePair = 1;
         npr->readXferRdyDis = 1;
         if (vport->cfg_first_burst_size)
             npr->writeXferRdyDis = 1;
 
         /* For FCP support */
         npr->prliType = PRLI_FCP_TYPE;
         npr->initiatorFunc = 1;
         elsiocb->cmd_flag |= LPFC_PRLI_FCP_REQ;
 
         /* Remove FCP type - processed. */
         local_nlp_type &= ~NLP_FC4_FCP;
     } else if (local_nlp_type & NLP_FC4_NVME) {
         /* Remainder of payload is NVME PRLI parameter page.
          * This data structure is the newer definition that
          * uses bf macros so a byte swap is required.
          */
         *((uint32_t *)(pcmd)) = ELS_CMD_NVMEPRLI;
         pcmd += sizeof(uint32_t);
         npr_nvme = (struct lpfc_nvme_prli *)pcmd;
         bf_set(prli_type_code, npr_nvme, PRLI_NVME_TYPE);
         bf_set(prli_estabImagePair, npr_nvme, 0);  /* Should be 0 */
         if (phba->nsler) {
             bf_set(prli_nsler, npr_nvme, 1);
             bf_set(prli_conf, npr_nvme, 1);
         }
 
         /* Only initiators request first burst. */
         if ((phba->cfg_nvme_enable_fb) &&
             !phba->nvmet_support)
             bf_set(prli_fba, npr_nvme, 1);
 
         if (phba->nvmet_support) {
             bf_set(prli_tgt, npr_nvme, 1);
             bf_set(prli_disc, npr_nvme, 1);
         } else {
             bf_set(prli_init, npr_nvme, 1);
             bf_set(prli_conf, npr_nvme, 1);
         }
 
         npr_nvme->word1 = cpu_to_be32(npr_nvme->word1);
         npr_nvme->word4 = cpu_to_be32(npr_nvme->word4);
         elsiocb->cmd_flag |= LPFC_PRLI_NVME_REQ;
 
         /* Remove NVME type - processed. */
         local_nlp_type &= ~NLP_FC4_NVME;
     }
 
     phba->fc_stat.elsXmitPRLI++;
     elsiocb->cmd_cmpl = lpfc_cmpl_els_prli;
 
     lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
                   "Issue PRLI:  did:x%x refcnt %d",
                   ndlp->nlp_DID, kref_read(&ndlp->kref), 0);
     elsiocb->ndlp = lpfc_nlp_get(ndlp);
     if (!elsiocb->ndlp) {
         lpfc_els_free_iocb(phba, elsiocb);
         return 1;
     }
 
     rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
     if (rc == IOCB_ERROR) {
         lpfc_els_free_iocb(phba, elsiocb);
         lpfc_nlp_put(ndlp);
         return 1;
     }
 
     /* The vport counters are used for lpfc_scan_finished, but
      * the ndlp is used to track outstanding PRLIs for different
      * FC4 types.
      */
     spin_lock_irq(&ndlp->lock);
     ndlp->nlp_flag |= NLP_PRLI_SND;
     vport->fc_prli_sent++;
     ndlp->fc4_prli_sent++;
     spin_unlock_irq(&ndlp->lock);
 
     /* The driver supports 2 FC4 types.  Make sure
      * a PRLI is issued for all types before exiting.
      */
     if (phba->sli_rev == LPFC_SLI_REV4 &&
         local_nlp_type & (NLP_FC4_FCP | NLP_FC4_NVME))
         goto send_next_prli;
     else
         return 0;
 }
 
 /**
  * lpfc_rscn_disc - Perform rscn discovery for a vport
  * @vport: pointer to a host virtual N_Port data structure.
  *
  * This routine performs Registration State Change Notification (RSCN)
  * discovery for a @vport. If the @vport's node port recovery count is not
  * zero, it will invoke the lpfc_els_disc_plogi() to perform PLOGI for all
  * the nodes that need recovery. If none of the PLOGI were needed through
  * the lpfc_els_disc_plogi() routine, the lpfc_end_rscn() routine shall be
  * invoked to check and handle possible more RSCN came in during the period
  * of processing the current ones.
  **/
 static void
 lpfc_rscn_disc(struct lpfc_vport *vport)
 {
     lpfc_can_disctmo(vport);
 
     /* RSCN discovery */
     /* go thru NPR nodes and issue ELS PLOGIs */
     if (vport->fc_npr_cnt)
         if (lpfc_els_disc_plogi(vport))
             return;
 
     lpfc_end_rscn(vport);
 }
 
 /**
  * lpfc_adisc_done - Complete the adisc phase of discovery
  * @vport: pointer to lpfc_vport hba data structure that finished all ADISCs.
  *
  * This function is called when the final ADISC is completed during discovery.
  * This function handles clearing link attention or issuing reg_vpi depending
  * on whether npiv is enabled. This function also kicks off the PLOGI phase of
  * discovery.
  * This function is called with no locks held.
  **/
 static void
 lpfc_adisc_done(struct lpfc_vport *vport)
 {
     struct Scsi_Host   *shost = lpfc_shost_from_vport(vport);
     struct lpfc_hba   *phba = vport->phba;
 
     /*
      * For NPIV, cmpl_reg_vpi will set port_state to READY,
      * and continue discovery.
      */
     if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
         !(vport->fc_flag & FC_RSCN_MODE) &&
         (phba->sli_rev < LPFC_SLI_REV4)) {
 
         /*
          * If link is down, clear_la and reg_vpi will be done after
          * flogi following a link up event
          */
         if (!lpfc_is_link_up(phba))
             return;
 
         /* The ADISCs are complete.  Doesn't matter if they
          * succeeded or failed because the ADISC completion
          * routine guarantees to call the state machine and
          * the RPI is either unregistered (failed ADISC response)
          * or the RPI is still valid and the node is marked
          * mapped for a target.  The exchanges should be in the
          * correct state. This code is specific to SLI3.
          */
         lpfc_issue_clear_la(phba, vport);
         lpfc_issue_reg_vpi(phba, vport);
         return;
     }
     /*
     * For SLI2, we need to set port_state to READY
     * and continue discovery.
     */
     if (vport->port_state < LPFC_VPORT_READY) {
         /* If we get here, there is nothing to ADISC */
         lpfc_issue_clear_la(phba, vport);
         if (!(vport->fc_flag & FC_ABORT_DISCOVERY)) {
             vport->num_disc_nodes = 0;
             /* go thru NPR list, issue ELS PLOGIs */
             if (vport->fc_npr_cnt)
                 lpfc_els_disc_plogi(vport);
             if (!vport->num_disc_nodes) {
                 spin_lock_irq(shost->host_lock);
                 vport->fc_flag &= ~FC_NDISC_ACTIVE;
                 spin_unlock_irq(shost->host_lock);
                 lpfc_can_disctmo(vport);
                 lpfc_end_rscn(vport);
             }
         }
         vport->port_state = LPFC_VPORT_READY;
     } else
         lpfc_rscn_disc(vport);
 }
 
 /**
  * lpfc_more_adisc - Issue more adisc as needed
  * @vport: pointer to a host virtual N_Port data structure.
  *
  * This routine determines whether there are more ndlps on a @vport
  * node list need to have Address Discover (ADISC) issued. If so, it will
  * invoke the lpfc_els_disc_adisc() routine to issue ADISC on the @vport's
  * remaining nodes which need to have ADISC sent.
  **/
 void
 lpfc_more_adisc(struct lpfc_vport *vport)
 {
     if (vport->num_disc_nodes)
         vport->num_disc_nodes--;
     /* Continue discovery with <num_disc_nodes> ADISCs to go */
     lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
              "0210 Continue discovery with %d ADISCs to go "
              "Data: x%x x%x x%x\n",
              vport->num_disc_nodes, vport->fc_adisc_cnt,
              vport->fc_flag, vport->port_state);
     /* Check to see if there are more ADISCs to be sent */
     if (vport->fc_flag & FC_NLP_MORE) {
         lpfc_set_disctmo(vport);
         /* go thru NPR nodes and issue any remaining ELS ADISCs */
         lpfc_els_disc_adisc(vport);
     }
     if (!vport->num_disc_nodes)
         lpfc_adisc_done(vport);
     return;
 }
 
 /**
  * lpfc_cmpl_els_adisc - Completion callback function for adisc
  * @phba: pointer to lpfc hba data structure.
  * @cmdiocb: pointer to lpfc command iocb data structure.
  * @rspiocb: pointer to lpfc response iocb data structure.
  *
  * This routine is the completion function for issuing the Address Discover
  * (ADISC) command. It first checks to see whether link went down during
  * the discovery process. If so, the node will be marked as node port
  * recovery for issuing discover IOCB by the link attention handler and
  * exit. Otherwise, the response status is checked. If error was reported
  * in the response status, the ADISC command shall be retried by invoking
  * the lpfc_els_retry() routine. Otherwise, if no error was reported in
  * the response status, the state machine is invoked to set transition
  * with respect to NLP_EVT_CMPL_ADISC event.
  **/
 static void
 lpfc_cmpl_els_adisc(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
             struct lpfc_iocbq *rspiocb)
 {
     struct lpfc_vport *vport = cmdiocb->vport;
     IOCB_t *irsp;
     struct lpfc_nodelist *ndlp;
     int  disc;
     u32 ulp_status, ulp_word4, tmo;
     bool release_node = false;
 
     /* we pass cmdiocb to state machine which needs rspiocb as well */
     cmdiocb->rsp_iocb = rspiocb;
 
     ndlp = cmdiocb->ndlp;
 
     ulp_status = get_job_ulpstatus(phba, rspiocb);
     ulp_word4 = get_job_word4(phba, rspiocb);
 
     if (phba->sli_rev == LPFC_SLI_REV4) {
         tmo = get_wqe_tmo(cmdiocb);
     } else {
         irsp = &rspiocb->iocb;
         tmo = irsp->ulpTimeout;
     }
 
     lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
         "ADISC cmpl:      status:x%x/x%x did:x%x",
         ulp_status, ulp_word4,
         ndlp->nlp_DID);
 
     /* Since ndlp can be freed in the disc state machine, note if this node
      * is being used during discovery.
      */
     spin_lock_irq(&ndlp->lock);
     disc = (ndlp->nlp_flag & NLP_NPR_2B_DISC);
     ndlp->nlp_flag &= ~(NLP_ADISC_SND | NLP_NPR_2B_DISC);
     spin_unlock_irq(&ndlp->lock);
     /* ADISC completes to NPort <nlp_DID> */
     lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
              "0104 ADISC completes to NPort x%x "
              "Data: x%x x%x x%x x%x x%x\n",
              ndlp->nlp_DID, ulp_status, ulp_word4,
              tmo, disc, vport->num_disc_nodes);
     /* Check to see if link went down during discovery */
     if (lpfc_els_chk_latt(vport)) {
         spin_lock_irq(&ndlp->lock);
         ndlp->nlp_flag |= NLP_NPR_2B_DISC;
         spin_unlock_irq(&ndlp->lock);
         goto out;
     }
 
     if (ulp_status) {
         /* Check for retry */
         if (lpfc_els_retry(phba, cmdiocb, rspiocb)) {
             /* ELS command is being retried */
             if (disc) {
                 spin_lock_irq(&ndlp->lock);
                 ndlp->nlp_flag |= NLP_NPR_2B_DISC;
                 spin_unlock_irq(&ndlp->lock);
                 lpfc_set_disctmo(vport);
             }
             goto out;
         }
         /* ADISC failed */
         lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
                  "2755 ADISC failure DID:%06X Status:x%x/x%x\n",
                  ndlp->nlp_DID, ulp_status,
                  ulp_word4);
         lpfc_disc_state_machine(vport, ndlp, cmdiocb,
                     NLP_EVT_CMPL_ADISC);
 
         /* As long as this node is not registered with the SCSI or NVMe
          * transport, it is no longer an active node. Otherwise
          * devloss handles the final cleanup.
          */
         spin_lock_irq(&ndlp->lock);
         if (!(ndlp->fc4_xpt_flags & (SCSI_XPT_REGD | NVME_XPT_REGD))) {
             ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
             if (!(ndlp->nlp_flag & NLP_IN_DEV_LOSS))
                 release_node = true;
         }
         spin_unlock_irq(&ndlp->lock);
 
         if (release_node)
             lpfc_disc_state_machine(vport, ndlp, cmdiocb,
                         NLP_EVT_DEVICE_RM);
     } else
         /* Good status, call state machine */
         lpfc_disc_state_machine(vport, ndlp, cmdiocb,
                     NLP_EVT_CMPL_ADISC);
 
     /* Check to see if there are more ADISCs to be sent */
     if (disc && vport->num_disc_nodes)
         lpfc_more_adisc(vport);
 out:
     lpfc_els_free_iocb(phba, cmdiocb);
     lpfc_nlp_put(ndlp);
     return;
 }
 
 /**
  * lpfc_issue_els_adisc - Issue an address discover iocb to an node on a vport
  * @vport: pointer to a virtual N_Port data structure.
  * @ndlp: pointer to a node-list data structure.
  * @retry: number of retries to the command IOCB.
  *
  * This routine issues an Address Discover (ADISC) for an @ndlp on a
  * @vport. It prepares the payload of the ADISC ELS command, updates the
  * and states of the ndlp, and invokes the lpfc_sli_issue_iocb() routine
  * to issue the ADISC ELS command.
  *
  * Note that the ndlp reference count will be incremented by 1 for holding the
  * ndlp and the reference to ndlp will be stored into the ndlp field of
  * the IOCB for the completion callback function to the ADISC ELS command.
  *
  * Return code
  *   0 - successfully issued adisc
  *   1 - failed to issue adisc
  **/
 int
 lpfc_issue_els_adisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
              uint8_t retry)
 {
     int rc = 0;
     struct lpfc_hba  *phba = vport->phba;
     ADISC *ap;
     struct lpfc_iocbq *elsiocb;
     uint8_t *pcmd;
     uint16_t cmdsize;
 
     cmdsize = (sizeof(uint32_t) + sizeof(ADISC));
     elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp,
                      ndlp->nlp_DID, ELS_CMD_ADISC);
     if (!elsiocb)
         return 1;
 
     pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt;
 
     /* For ADISC request, remainder of payload is service parameters */
     *((uint32_t *) (pcmd)) = ELS_CMD_ADISC;
     pcmd += sizeof(uint32_t);
 
     /* Fill in ADISC payload */
     ap = (ADISC *) pcmd;
     ap->hardAL_PA = phba->fc_pref_ALPA;
     memcpy(&ap->portName, &vport->fc_portname, sizeof(struct lpfc_name));
     memcpy(&ap->nodeName, &vport->fc_nodename, sizeof(struct lpfc_name));
     ap->DID = be32_to_cpu(vport->fc_myDID);
 
     phba->fc_stat.elsXmitADISC++;
     elsiocb->cmd_cmpl = lpfc_cmpl_els_adisc;
     spin_lock_irq(&ndlp->lock);
     ndlp->nlp_flag |= NLP_ADISC_SND;
     spin_unlock_irq(&ndlp->lock);
     elsiocb->ndlp = lpfc_nlp_get(ndlp);
     if (!elsiocb->ndlp) {
         lpfc_els_free_iocb(phba, elsiocb);
         goto err;
     }
 
     lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
                   "Issue ADISC:   did:x%x refcnt %d",
                   ndlp->nlp_DID, kref_read(&ndlp->kref), 0);
 
     rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
     if (rc == IOCB_ERROR) {
         lpfc_els_free_iocb(phba, elsiocb);
         lpfc_nlp_put(ndlp);
         goto err;
     }
 
     return 0;
 
 err:
     spin_lock_irq(&ndlp->lock);
     ndlp->nlp_flag &= ~NLP_ADISC_SND;
     spin_unlock_irq(&ndlp->lock);
     return 1;
 }
 
 /**
  * lpfc_cmpl_els_logo - Completion callback function for logo
  * @phba: pointer to lpfc hba data structure.
  * @cmdiocb: pointer to lpfc command iocb data structure.
  * @rspiocb: pointer to lpfc response iocb data structure.
  *
  * This routine is the completion function for issuing the ELS Logout (LOGO)
  * command. If no error status was reported from the LOGO response, the
  * state machine of the associated ndlp shall be invoked for transition with
  * respect to NLP_EVT_CMPL_LOGO event.
  **/
 static void
 lpfc_cmpl_els_logo(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
            struct lpfc_iocbq *rspiocb)
 {
     struct lpfc_nodelist *ndlp = cmdiocb->ndlp;
     struct lpfc_vport *vport = ndlp->vport;
     IOCB_t *irsp;
     unsigned long flags;
     uint32_t skip_recovery = 0;
     int wake_up_waiter = 0;
     u32 ulp_status;
     u32 ulp_word4;
     u32 tmo;
 
     /* we pass cmdiocb to state machine which needs rspiocb as well */
     cmdiocb->rsp_iocb = rspiocb;
 
     ulp_status = get_job_ulpstatus(phba, rspiocb);
     ulp_word4 = get_job_word4(phba, rspiocb);
 
     if (phba->sli_rev == LPFC_SLI_REV4) {
         tmo = get_wqe_tmo(cmdiocb);
     } else {
         irsp = &rspiocb->iocb;
         tmo = irsp->ulpTimeout;
     }
 
     spin_lock_irq(&ndlp->lock);
     ndlp->nlp_flag &= ~NLP_LOGO_SND;
     if (ndlp->save_flags & NLP_WAIT_FOR_LOGO) {
         wake_up_waiter = 1;
         ndlp->save_flags &= ~NLP_WAIT_FOR_LOGO;
     }
     spin_unlock_irq(&ndlp->lock);
 
     lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
         "LOGO cmpl:       status:x%x/x%x did:x%x",
         ulp_status, ulp_word4,
         ndlp->nlp_DID);
 
     /* LOGO completes to NPort <nlp_DID> */
     lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
              "0105 LOGO completes to NPort x%x "
              "refcnt %d nflags x%x Data: x%x x%x x%x x%x\n",
              ndlp->nlp_DID, kref_read(&ndlp->kref), ndlp->nlp_flag,
              ulp_status, ulp_word4,
              tmo, vport->num_disc_nodes);
 
     if (lpfc_els_chk_latt(vport)) {
         skip_recovery = 1;
         goto out;
     }
 
     /* The LOGO will not be retried on failure.  A LOGO was
      * issued to the remote rport and a ACC or RJT or no Answer are
      * all acceptable.  Note the failure and move forward with
      * discovery.  The PLOGI will retry.
      */
     if (ulp_status) {
         /* LOGO failed */
         lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
                  "2756 LOGO failure, No Retry DID:%06X "
                  "Status:x%x/x%x\n",
                  ndlp->nlp_DID, ulp_status,
                  ulp_word4);
 
         if (lpfc_error_lost_link(ulp_status, ulp_word4)) {
             skip_recovery = 1;
             goto out;
         }
     }
 
     /* Call state machine. This will unregister the rpi if needed. */
     lpfc_disc_state_machine(vport, ndlp, cmdiocb, NLP_EVT_CMPL_LOGO);
 
     /* The driver sets this flag for an NPIV instance that doesn't want to
      * log into the remote port.
      */
     if (ndlp->nlp_flag & NLP_TARGET_REMOVE) {
         spin_lock_irq(&ndlp->lock);
         if (phba->sli_rev == LPFC_SLI_REV4)
             ndlp->nlp_flag |= NLP_RELEASE_RPI;
         ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
         spin_unlock_irq(&ndlp->lock);
         lpfc_disc_state_machine(vport, ndlp, cmdiocb,
                     NLP_EVT_DEVICE_RM);
         goto out_rsrc_free;
     }
 
 out:
     /* At this point, the LOGO processing is complete. NOTE: For a
      * pt2pt topology, we are assuming the NPortID will only change
      * on link up processing. For a LOGO / PLOGI initiated by the
      * Initiator, we are assuming the NPortID is not going to change.
      */
 
     if (wake_up_waiter && ndlp->logo_waitq)
         wake_up(ndlp->logo_waitq);
     /*
      * If the node is a target, the handling attempts to recover the port.
      * For any other port type, the rpi is unregistered as an implicit
      * LOGO.
      */
     if (ndlp->nlp_type & (NLP_FCP_TARGET | NLP_NVME_TARGET) &&
         skip_recovery == 0) {
         lpfc_cancel_retry_delay_tmo(vport, ndlp);
         spin_lock_irqsave(&ndlp->lock, flags);
         ndlp->nlp_flag |= NLP_NPR_2B_DISC;
         spin_unlock_irqrestore(&ndlp->lock, flags);
 
         lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
                  "3187 LOGO completes to NPort x%x: Start "
                  "Recovery Data: x%x x%x x%x x%x\n",
                  ndlp->nlp_DID, ulp_status,
                  ulp_word4, tmo,
                  vport->num_disc_nodes);
 
         lpfc_els_free_iocb(phba, cmdiocb);
         lpfc_nlp_put(ndlp);
 
         lpfc_disc_start(vport);
         return;
     }
 
     /* Cleanup path for failed REG_RPI handling. If REG_RPI fails, the
      * driver sends a LOGO to the rport to cleanup.  For fabric and
      * initiator ports cleanup the node as long as it the node is not
      * register with the transport.
      */
     if (!(ndlp->fc4_xpt_flags & (SCSI_XPT_REGD | NVME_XPT_REGD))) {
         spin_lock_irq(&ndlp->lock);
         ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
         spin_unlock_irq(&ndlp->lock);
         lpfc_disc_state_machine(vport, ndlp, cmdiocb,
                     NLP_EVT_DEVICE_RM);
     }
 out_rsrc_free:
     /* Driver is done with the I/O. */
     lpfc_els_free_iocb(phba, cmdiocb);
     lpfc_nlp_put(ndlp);
 }
 
 /**
  * lpfc_issue_els_logo - Issue a logo to an node on a vport
  * @vport: pointer to a virtual N_Port data structure.
  * @ndlp: pointer to a node-list data structure.
  * @retry: number of retries to the command IOCB.
  *
  * This routine constructs and issues an ELS Logout (LOGO) iocb command
  * to a remote node, referred by an @ndlp on a @vport. It constructs the
  * payload of the IOCB, properly sets up the @ndlp state, and invokes the
  * lpfc_sli_issue_iocb() routine to send out the LOGO ELS command.
  *
  * Note that the ndlp reference count will be incremented by 1 for holding the
  * ndlp and the reference to ndlp will be stored into the ndlp field of
  * the IOCB for the completion callback function to the LOGO ELS command.
  *
  * Callers of this routine are expected to unregister the RPI first
  *
  * Return code
  *   0 - successfully issued logo
  *   1 - failed to issue logo
  **/
 int
 lpfc_issue_els_logo(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
             uint8_t retry)
 {
     struct lpfc_hba  *phba = vport->phba;
     struct lpfc_iocbq *elsiocb;
     uint8_t *pcmd;
     uint16_t cmdsize;
     int rc;
 
     spin_lock_irq(&ndlp->lock);
     if (ndlp->nlp_flag & NLP_LOGO_SND) {
         spin_unlock_irq(&ndlp->lock);
         return 0;
     }
     spin_unlock_irq(&ndlp->lock);
 
     cmdsize = (2 * sizeof(uint32_t)) + sizeof(struct lpfc_name);
     elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp,
                      ndlp->nlp_DID, ELS_CMD_LOGO);
     if (!elsiocb)
         return 1;
 
     pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt;
     *((uint32_t *) (pcmd)) = ELS_CMD_LOGO;
     pcmd += sizeof(uint32_t);
 
     /* Fill in LOGO payload */
     *((uint32_t *) (pcmd)) = be32_to_cpu(vport->fc_myDID);
     pcmd += sizeof(uint32_t);
     memcpy(pcmd, &vport->fc_portname, sizeof(struct lpfc_name));
 
     phba->fc_stat.elsXmitLOGO++;
     elsiocb->cmd_cmpl = lpfc_cmpl_els_logo;
     spin_lock_irq(&ndlp->lock);
     ndlp->nlp_flag |= NLP_LOGO_SND;
     ndlp->nlp_flag &= ~NLP_ISSUE_LOGO;
     spin_unlock_irq(&ndlp->lock);
     elsiocb->ndlp = lpfc_nlp_get(ndlp);
     if (!elsiocb->ndlp) {
         lpfc_els_free_iocb(phba, elsiocb);
         goto err;
     }
 
     lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
                   "Issue LOGO:      did:x%x refcnt %d",
                   ndlp->nlp_DID, kref_read(&ndlp->kref), 0);
 
     rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
     if (rc == IOCB_ERROR) {
         lpfc_els_free_iocb(phba, elsiocb);
         lpfc_nlp_put(ndlp);
         goto err;
     }
 
     spin_lock_irq(&ndlp->lock);
     ndlp->nlp_prev_state = ndlp->nlp_state;
     spin_unlock_irq(&ndlp->lock);
     lpfc_nlp_set_state(vport, ndlp, NLP_STE_LOGO_ISSUE);
     return 0;
 
 err:
     spin_lock_irq(&ndlp->lock);
     ndlp->nlp_flag &= ~NLP_LOGO_SND;
     spin_unlock_irq(&ndlp->lock);
     return 1;
 }
 
 /**
  * lpfc_cmpl_els_cmd - Completion callback function for generic els command
  * @phba: pointer to lpfc hba data structure.
  * @cmdiocb: pointer to lpfc command iocb data structure.
  * @rspiocb: pointer to lpfc response iocb data structure.
  *
  * This routine is a generic completion callback function for ELS commands.
  * Specifically, it is the callback function which does not need to perform
  * any command specific operations. It is currently used by the ELS command
  * issuing routines for RSCN, lpfc_issue_els_rscn, and the ELS Fibre Channel
  * Address Resolution Protocol Response (FARPR) routine, lpfc_issue_els_farpr().
  * Other than certain debug loggings, this callback function simply invokes the
  * lpfc_els_chk_latt() routine to check whether link went down during the
  * discovery process.
  **/
 static void
 lpfc_cmpl_els_cmd(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
           struct lpfc_iocbq *rspiocb)
 {
     struct lpfc_vport *vport = cmdiocb->vport;
     struct lpfc_nodelist *free_ndlp;
     IOCB_t *irsp;
     u32 ulp_status, ulp_word4, tmo, did, iotag;
 
     ulp_status = get_job_ulpstatus(phba, rspiocb);
     ulp_word4 = get_job_word4(phba, rspiocb);
     did = get_job_els_rsp64_did(phba, cmdiocb);
 
     if (phba->sli_rev == LPFC_SLI_REV4) {
         tmo = get_wqe_tmo(cmdiocb);
         iotag = get_wqe_reqtag(cmdiocb);
     } else {
         irsp = &rspiocb->iocb;
         tmo = irsp->ulpTimeout;
         iotag = irsp->ulpIoTag;
     }
 
     lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
                   "ELS cmd cmpl:    status:x%x/x%x did:x%x",
                   ulp_status, ulp_word4, did);
 
     /* ELS cmd tag <ulpIoTag> completes */
     lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
              "0106 ELS cmd tag x%x completes Data: x%x x%x x%x\n",
              iotag, ulp_status, ulp_word4, tmo);
 
     /* Check to see if link went down during discovery */
     lpfc_els_chk_latt(vport);
 
     free_ndlp = cmdiocb->ndlp;
 
     lpfc_els_free_iocb(phba, cmdiocb);
     lpfc_nlp_put(free_ndlp);
 }
 
 /**
  * lpfc_reg_fab_ctrl_node - RPI register the fabric controller node.
  * @vport: pointer to lpfc_vport data structure.
  * @fc_ndlp: pointer to the fabric controller (0xfffffd) node.
  *
  * This routine registers the rpi assigned to the fabric controller
  * NPort_ID (0xfffffd) with the port and moves the node to UNMAPPED
  * state triggering a registration with the SCSI transport.
  *
  * This routine is single out because the fabric controller node
  * does not receive a PLOGI.  This routine is consumed by the
  * SCR and RDF ELS commands.  Callers are expected to qualify
  * with SLI4 first.
  **/
 static int
 lpfc_reg_fab_ctrl_node(struct lpfc_vport *vport, struct lpfc_nodelist *fc_ndlp)
 {
     int rc = 0;
     struct lpfc_hba *phba = vport->phba;
     struct lpfc_nodelist *ns_ndlp;
     LPFC_MBOXQ_t *mbox;
 
     if (fc_ndlp->nlp_flag & NLP_RPI_REGISTERED)
         return rc;
 
     ns_ndlp = lpfc_findnode_did(vport, NameServer_DID);
     if (!ns_ndlp)
         return -ENODEV;
 
     lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
              "0935 %s: Reg FC RPI x%x on FC DID x%x NSSte: x%x\n",
              __func__, fc_ndlp->nlp_rpi, fc_ndlp->nlp_DID,
              ns_ndlp->nlp_state);
     if (ns_ndlp->nlp_state != NLP_STE_UNMAPPED_NODE)
         return -ENODEV;
 
     mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
     if (!mbox) {
         lpfc_printf_vlog(vport, KERN_ERR, LOG_NODE,
                  "0936 %s: no memory for reg_login "
                  "Data: x%x x%x x%x x%x\n", __func__,
                  fc_ndlp->nlp_DID, fc_ndlp->nlp_state,
                  fc_ndlp->nlp_flag, fc_ndlp->nlp_rpi);
         return -ENOMEM;
     }
     rc = lpfc_reg_rpi(phba, vport->vpi, fc_ndlp->nlp_DID,
               (u8 *)&vport->fc_sparam, mbox, fc_ndlp->nlp_rpi);
     if (rc) {
         rc = -EACCES;
         goto out;
     }
 
     fc_ndlp->nlp_flag |= NLP_REG_LOGIN_SEND;
     mbox->mbox_cmpl = lpfc_mbx_cmpl_fc_reg_login;
     mbox->ctx_ndlp = lpfc_nlp_get(fc_ndlp);
     if (!mbox->ctx_ndlp) {
         rc = -ENOMEM;
         goto out;
     }
 
     mbox->vport = vport;
     rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
     if (rc == MBX_NOT_FINISHED) {
         rc = -ENODEV;
         lpfc_nlp_put(fc_ndlp);
         goto out;
     }
     /* Success path. Exit. */
     lpfc_nlp_set_state(vport, fc_ndlp,
                NLP_STE_REG_LOGIN_ISSUE);
     return 0;
 
  out:
     lpfc_mbox_rsrc_cleanup(phba, mbox, MBOX_THD_UNLOCKED);
     lpfc_printf_vlog(vport, KERN_ERR, LOG_NODE,
              "0938 %s: failed to format reg_login "
              "Data: x%x x%x x%x x%x\n", __func__,
              fc_ndlp->nlp_DID, fc_ndlp->nlp_state,
              fc_ndlp->nlp_flag, fc_ndlp->nlp_rpi);
     return rc;
 }
 
 /**
  * lpfc_cmpl_els_disc_cmd - Completion callback function for Discovery ELS cmd
  * @phba: pointer to lpfc hba data structure.
  * @cmdiocb: pointer to lpfc command iocb data structure.
  * @rspiocb: pointer to lpfc response iocb data structure.
  *
  * This routine is a generic completion callback function for Discovery ELS cmd.
  * Currently used by the ELS command issuing routines for the ELS State Change
  * Request (SCR), lpfc_issue_els_scr() and the ELS RDF, lpfc_issue_els_rdf().
  * These commands will be retried once only for ELS timeout errors.
  **/
 static void
 lpfc_cmpl_els_disc_cmd(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
                struct lpfc_iocbq *rspiocb)
 {
     struct lpfc_vport *vport = cmdiocb->vport;
     IOCB_t *irsp;
     struct lpfc_els_rdf_rsp *prdf;
     struct lpfc_dmabuf *pcmd, *prsp;
     u32 *pdata;
     u32 cmd;
     struct lpfc_nodelist *ndlp = cmdiocb->ndlp;
     u32 ulp_status, ulp_word4, tmo, did, iotag;
 
     ulp_status = get_job_ulpstatus(phba, rspiocb);
     ulp_word4 = get_job_word4(phba, rspiocb);
     did = get_job_els_rsp64_did(phba, cmdiocb);
 
     if (phba->sli_rev == LPFC_SLI_REV4) {
         tmo = get_wqe_tmo(cmdiocb);
         iotag = get_wqe_reqtag(cmdiocb);
     } else {
         irsp = &rspiocb->iocb;
         tmo = irsp->ulpTimeout;
         iotag = irsp->ulpIoTag;
     }
 
     lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
         "ELS cmd cmpl:    status:x%x/x%x did:x%x",
         ulp_status, ulp_word4, did);
 
     /* ELS cmd tag <ulpIoTag> completes */
     lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS | LOG_CGN_MGMT,
              "0217 ELS cmd tag x%x completes Data: x%x x%x x%x x%x\n",
              iotag, ulp_status, ulp_word4, tmo, cmdiocb->retry);
 
     pcmd = cmdiocb->cmd_dmabuf;
     if (!pcmd)
         goto out;
 
     pdata = (u32 *)pcmd->virt;
     if (!pdata)
         goto out;
     cmd = *pdata;
 
     /* Only 1 retry for ELS Timeout only */
     if (ulp_status == IOSTAT_LOCAL_REJECT &&
         ((ulp_word4 & IOERR_PARAM_MASK) ==
         IOERR_SEQUENCE_TIMEOUT)) {
         cmdiocb->retry++;
         if (cmdiocb->retry <= 1) {
             switch (cmd) {
             case ELS_CMD_SCR:
                 lpfc_issue_els_scr(vport, cmdiocb->retry);
                 break;
             case ELS_CMD_EDC:
                 lpfc_issue_els_edc(vport, cmdiocb->retry);
                 break;
             case ELS_CMD_RDF:
                 lpfc_issue_els_rdf(vport, cmdiocb->retry);
                 break;
             }
             goto out;
         }
         phba->fc_stat.elsRetryExceeded++;
     }
     if (cmd == ELS_CMD_EDC) {
         /* must be called before checking uplStatus and returning */
         lpfc_cmpl_els_edc(phba, cmdiocb, rspiocb);
         return;
     }
     if (ulp_status) {
         /* ELS discovery cmd completes with error */
         lpfc_printf_vlog(vport, KERN_WARNING, LOG_ELS | LOG_CGN_MGMT,
                  "4203 ELS cmd x%x error: x%x x%X\n", cmd,
                  ulp_status, ulp_word4);
         goto out;
     }
 
     /* The RDF response doesn't have any impact on the running driver
      * but the notification descriptors are dumped here for support.
      */
     if (cmd == ELS_CMD_RDF) {
         int i;
 
         prsp = list_get_first(&pcmd->list, struct lpfc_dmabuf, list);
         if (!prsp)
             goto out;
 
         prdf = (struct lpfc_els_rdf_rsp *)prsp->virt;
         if (!prdf)
             goto out;
 
         for (i = 0; i < ELS_RDF_REG_TAG_CNT &&
                 i < be32_to_cpu(prdf->reg_d1.reg_desc.count); i++)
             lpfc_printf_vlog(vport, KERN_INFO,
                      LOG_ELS | LOG_CGN_MGMT,
                      "4677 Fabric RDF Notification Grant "
                      "Data: 0x%08x Reg: %x %x\n",
                      be32_to_cpu(
                          prdf->reg_d1.desc_tags[i]),
                      phba->cgn_reg_signal,
                      phba->cgn_reg_fpin);
     }
 
 out:
     /* Check to see if link went down during discovery */
     lpfc_els_chk_latt(vport);
     lpfc_els_free_iocb(phba, cmdiocb);
     lpfc_nlp_put(ndlp);
     return;
 }
 
 /**
  * lpfc_issue_els_scr - Issue a scr to an node on a vport
  * @vport: pointer to a host virtual N_Port data structure.
  * @retry: retry counter for the command IOCB.
  *
  * This routine issues a State Change Request (SCR) to a fabric node
  * on a @vport. The remote node is Fabric Controller (0xfffffd). It
  * first search the @vport node list to find the matching ndlp. If no such
  * ndlp is found, a new ndlp shall be created for this (SCR) purpose. An
  * IOCB is allocated, payload prepared, and the lpfc_sli_issue_iocb()
  * routine is invoked to send the SCR IOCB.
  *
  * Note that the ndlp reference count will be incremented by 1 for holding the
  * ndlp and the reference to ndlp will be stored into the ndlp field of
  * the IOCB for the completion callback function to the SCR ELS command.
  *
  * Return code
  *   0 - Successfully issued scr command
  *   1 - Failed to issue scr command
  **/
 int
 lpfc_issue_els_scr(struct lpfc_vport *vport, uint8_t retry)
 {
     int rc = 0;
     struct lpfc_hba  *phba = vport->phba;
     struct lpfc_iocbq *elsiocb;
     uint8_t *pcmd;
     uint16_t cmdsize;
     struct lpfc_nodelist *ndlp;
 
     cmdsize = (sizeof(uint32_t) + sizeof(SCR));
 
     ndlp = lpfc_findnode_did(vport, Fabric_Cntl_DID);
     if (!ndlp) {
         ndlp = lpfc_nlp_init(vport, Fabric_Cntl_DID);
         if (!ndlp)
             return 1;
         lpfc_enqueue_node(vport, ndlp);
     }
 
     elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp,
                      ndlp->nlp_DID, ELS_CMD_SCR);
     if (!elsiocb)
         return 1;
 
     if (phba->sli_rev == LPFC_SLI_REV4) {
         rc = lpfc_reg_fab_ctrl_node(vport, ndlp);
         if (rc) {
             lpfc_els_free_iocb(phba, elsiocb);
             lpfc_printf_vlog(vport, KERN_ERR, LOG_NODE,
                      "0937 %s: Failed to reg fc node, rc %d\n",
                      __func__, rc);
             return 1;
         }
     }
     pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt;
 
     *((uint32_t *) (pcmd)) = ELS_CMD_SCR;
     pcmd += sizeof(uint32_t);
 
     /* For SCR, remainder of payload is SCR parameter page */
     memset(pcmd, 0, sizeof(SCR));
     ((SCR *) pcmd)->Function = SCR_FUNC_FULL;
 
     lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
         "Issue SCR:       did:x%x",
         ndlp->nlp_DID, 0, 0);
 
     phba->fc_stat.elsXmitSCR++;
     elsiocb->cmd_cmpl = lpfc_cmpl_els_disc_cmd;
     elsiocb->ndlp = lpfc_nlp_get(ndlp);
     if (!elsiocb->ndlp) {
         lpfc_els_free_iocb(phba, elsiocb);
         return 1;
     }
 
     lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
                   "Issue SCR:     did:x%x refcnt %d",
                   ndlp->nlp_DID, kref_read(&ndlp->kref), 0);
 
     rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
     if (rc == IOCB_ERROR) {
         lpfc_els_free_iocb(phba, elsiocb);
         lpfc_nlp_put(ndlp);
         return 1;
     }
 
     return 0;
 }
 
 /**
  * lpfc_issue_els_rscn - Issue an RSCN to the Fabric Controller (Fabric)
  *   or the other nport (pt2pt).
  * @vport: pointer to a host virtual N_Port data structure.
  * @retry: number of retries to the command IOCB.
  *
  * This routine issues a RSCN to the Fabric Controller (DID 0xFFFFFD)
  *  when connected to a fabric, or to the remote port when connected
  *  in point-to-point mode. When sent to the Fabric Controller, it will
  *  replay the RSCN to registered recipients.
  *
  * Note that the ndlp reference count will be incremented by 1 for holding the
  * ndlp and the reference to ndlp will be stored into the ndlp field of
  * the IOCB for the completion callback function to the RSCN ELS command.
  *
  * Return code
  *   0 - Successfully issued RSCN command
  *   1 - Failed to issue RSCN command
  **/
 int
 lpfc_issue_els_rscn(struct lpfc_vport *vport, uint8_t retry)
 {
     int rc = 0;
     struct lpfc_hba *phba = vport->phba;
     struct lpfc_iocbq *elsiocb;
     struct lpfc_nodelist *ndlp;
     struct {
         struct fc_els_rscn rscn;
         struct fc_els_rscn_page portid;
     } *event;
     uint32_t nportid;
     uint16_t cmdsize = sizeof(*event);
 
     /* Not supported for private loop */
     if (phba->fc_topology == LPFC_TOPOLOGY_LOOP &&
         !(vport->fc_flag & FC_PUBLIC_LOOP))
         return 1;
 
     if (vport->fc_flag & FC_PT2PT) {
         /* find any mapped nport - that would be the other nport */
         ndlp = lpfc_findnode_mapped(vport);
         if (!ndlp)
             return 1;
     } else {
         nportid = FC_FID_FCTRL;
         /* find the fabric controller node */
         ndlp = lpfc_findnode_did(vport, nportid);
         if (!ndlp) {
             /* if one didn't exist, make one */
             ndlp = lpfc_nlp_init(vport, nportid);
             if (!ndlp)
                 return 1;
             lpfc_enqueue_node(vport, ndlp);
         }
     }
 
     elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp,
                      ndlp->nlp_DID, ELS_CMD_RSCN_XMT);
 
     if (!elsiocb)
         return 1;
 
     event = elsiocb->cmd_dmabuf->virt;
 
     event->rscn.rscn_cmd = ELS_RSCN;
     event->rscn.rscn_page_len = sizeof(struct fc_els_rscn_page);
     event->rscn.rscn_plen = cpu_to_be16(cmdsize);
 
     nportid = vport->fc_myDID;
     /* appears that page flags must be 0 for fabric to broadcast RSCN */
     event->portid.rscn_page_flags = 0;
     event->portid.rscn_fid[0] = (nportid & 0x00FF0000) >> 16;
     event->portid.rscn_fid[1] = (nportid & 0x0000FF00) >> 8;
     event->portid.rscn_fid[2] = nportid & 0x000000FF;
 
     phba->fc_stat.elsXmitRSCN++;
     elsiocb->cmd_cmpl = lpfc_cmpl_els_cmd;
     elsiocb->ndlp = lpfc_nlp_get(ndlp);
     if (!elsiocb->ndlp) {
         lpfc_els_free_iocb(phba, elsiocb);
         return 1;
     }
 
     lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
                   "Issue RSCN:       did:x%x",
                   ndlp->nlp_DID, 0, 0);
 
     rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
     if (rc == IOCB_ERROR) {
         lpfc_els_free_iocb(phba, elsiocb);
         lpfc_nlp_put(ndlp);
         return 1;
     }
 
     return 0;
 }
 
 /**
  * lpfc_issue_els_farpr - Issue a farp to an node on a vport
  * @vport: pointer to a host virtual N_Port data structure.
  * @nportid: N_Port identifier to the remote node.
  * @retry: number of retries to the command IOCB.
  *
  * This routine issues a Fibre Channel Address Resolution Response
  * (FARPR) to a node on a vport. The remote node N_Port identifier (@nportid)
  * is passed into the function. It first search the @vport node list to find
  * the matching ndlp. If no such ndlp is found, a new ndlp shall be created
  * for this (FARPR) purpose. An IOCB is allocated, payload prepared, and the
  * lpfc_sli_issue_iocb() routine is invoked to send the FARPR ELS command.
  *
  * Note that the ndlp reference count will be incremented by 1 for holding the
  * ndlp and the reference to ndlp will be stored into the ndlp field of
  * the IOCB for the completion callback function to the FARPR ELS command.
  *
  * Return code
  *   0 - Successfully issued farpr command
  *   1 - Failed to issue farpr command
  **/
 static int
 lpfc_issue_els_farpr(struct lpfc_vport *vport, uint32_t nportid, uint8_t retry)
 {
     int rc = 0;
     struct lpfc_hba  *phba = vport->phba;
     struct lpfc_iocbq *elsiocb;
     FARP *fp;
     uint8_t *pcmd;
     uint32_t *lp;
     uint16_t cmdsize;
     struct lpfc_nodelist *ondlp;
     struct lpfc_nodelist *ndlp;
 
     cmdsize = (sizeof(uint32_t) + sizeof(FARP));
 
     ndlp = lpfc_findnode_did(vport, nportid);
     if (!ndlp) {
         ndlp = lpfc_nlp_init(vport, nportid);
         if (!ndlp)
             return 1;
         lpfc_enqueue_node(vport, ndlp);
     }
 
     elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp,
                      ndlp->nlp_DID, ELS_CMD_FARPR);
     if (!elsiocb)
         return 1;
 
     pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt;
 
     *((uint32_t *) (pcmd)) = ELS_CMD_FARPR;
     pcmd += sizeof(uint32_t);
 
     /* Fill in FARPR payload */
     fp = (FARP *) (pcmd);
     memset(fp, 0, sizeof(FARP));
     lp = (uint32_t *) pcmd;
     *lp++ = be32_to_cpu(nportid);
     *lp++ = be32_to_cpu(vport->fc_myDID);
     fp->Rflags = 0;
     fp->Mflags = (FARP_MATCH_PORT | FARP_MATCH_NODE);
 
     memcpy(&fp->RportName, &vport->fc_portname, sizeof(struct lpfc_name));
     memcpy(&fp->RnodeName, &vport->fc_nodename, sizeof(struct lpfc_name));
     ondlp = lpfc_findnode_did(vport, nportid);
     if (ondlp) {
         memcpy(&fp->OportName, &ondlp->nlp_portname,
                sizeof(struct lpfc_name));
         memcpy(&fp->OnodeName, &ondlp->nlp_nodename,
                sizeof(struct lpfc_name));
     }
 
     lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
         "Issue FARPR:     did:x%x",
         ndlp->nlp_DID, 0, 0);
 
     phba->fc_stat.elsXmitFARPR++;
     elsiocb->cmd_cmpl = lpfc_cmpl_els_cmd;
     elsiocb->ndlp = lpfc_nlp_get(ndlp);
     if (!elsiocb->ndlp) {
         lpfc_els_free_iocb(phba, elsiocb);
         return 1;
     }
 
     rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
     if (rc == IOCB_ERROR) {
         /* The additional lpfc_nlp_put will cause the following
          * lpfc_els_free_iocb routine to trigger the release of
          * the node.
          */
         lpfc_els_free_iocb(phba, elsiocb);
         lpfc_nlp_put(ndlp);
         return 1;
     }
     /* This will cause the callback-function lpfc_cmpl_els_cmd to
      * trigger the release of the node.
      */
     /* Don't release reference count as RDF is likely outstanding */
     return 0;
 }
 
 /**
  * lpfc_issue_els_rdf - Register for diagnostic functions from the fabric.
  * @vport: pointer to a host virtual N_Port data structure.
  * @retry: retry counter for the command IOCB.
  *
  * This routine issues an ELS RDF to the Fabric Controller to register
  * for diagnostic functions.
  *
  * Note that the ndlp reference count will be incremented by 1 for holding the
  * ndlp and the reference to ndlp will be stored into the ndlp field of
  * the IOCB for the completion callback function to the RDF ELS command.
  *
  * Return code
  *   0 - Successfully issued rdf command
  *   1 - Failed to issue rdf command
  **/
 int
 lpfc_issue_els_rdf(struct lpfc_vport *vport, uint8_t retry)
 {
     struct lpfc_hba *phba = vport->phba;
     struct lpfc_iocbq *elsiocb;
     struct lpfc_els_rdf_req *prdf;
     struct lpfc_nodelist *ndlp;
     uint16_t cmdsize;
     int rc;
 
     cmdsize = sizeof(*prdf);
 
     ndlp = lpfc_findnode_did(vport, Fabric_Cntl_DID);
     if (!ndlp) {
         ndlp = lpfc_nlp_init(vport, Fabric_Cntl_DID);
         if (!ndlp)
             return -ENODEV;
         lpfc_enqueue_node(vport, ndlp);
     }
 
     /* RDF ELS is not required on an NPIV VN_Port. */
     if (vport->port_type == LPFC_NPIV_PORT)
         return -EACCES;
 
     elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp,
                      ndlp->nlp_DID, ELS_CMD_RDF);
     if (!elsiocb)
         return -ENOMEM;
 
     /* Configure the payload for the supported FPIN events. */
     prdf = (struct lpfc_els_rdf_req *)elsiocb->cmd_dmabuf->virt;
     memset(prdf, 0, cmdsize);
     prdf->rdf.fpin_cmd = ELS_RDF;
     prdf->rdf.desc_len = cpu_to_be32(sizeof(struct lpfc_els_rdf_req) -
                      sizeof(struct fc_els_rdf));
     prdf->reg_d1.reg_desc.desc_tag = cpu_to_be32(ELS_DTAG_FPIN_REGISTER);
     prdf->reg_d1.reg_desc.desc_len = cpu_to_be32(
                 FC_TLV_DESC_LENGTH_FROM_SZ(prdf->reg_d1));
     prdf->reg_d1.reg_desc.count = cpu_to_be32(ELS_RDF_REG_TAG_CNT);
     prdf->reg_d1.desc_tags[0] = cpu_to_be32(ELS_DTAG_LNK_INTEGRITY);
     prdf->reg_d1.desc_tags[1] = cpu_to_be32(ELS_DTAG_DELIVERY);
     prdf->reg_d1.desc_tags[2] = cpu_to_be32(ELS_DTAG_PEER_CONGEST);
     prdf->reg_d1.desc_tags[3] = cpu_to_be32(ELS_DTAG_CONGESTION);
 
     lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS | LOG_CGN_MGMT,
              "6444 Xmit RDF to remote NPORT x%x Reg: %x %x\n",
              ndlp->nlp_DID, phba->cgn_reg_signal,
              phba->cgn_reg_fpin);
 
     phba->cgn_fpin_frequency = LPFC_FPIN_INIT_FREQ;
     elsiocb->cmd_cmpl = lpfc_cmpl_els_disc_cmd;
     elsiocb->ndlp = lpfc_nlp_get(ndlp);
     if (!elsiocb->ndlp) {
         lpfc_els_free_iocb(phba, elsiocb);
         return -EIO;
     }
 
     lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
                   "Issue RDF:     did:x%x refcnt %d",
                   ndlp->nlp_DID, kref_read(&ndlp->kref), 0);
 
     rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
     if (rc == IOCB_ERROR) {
         lpfc_els_free_iocb(phba, elsiocb);
         lpfc_nlp_put(ndlp);
         return -EIO;
     }
     return 0;
 }
 
  /**
   * lpfc_els_rcv_rdf - Receive RDF ELS request from the fabric.
   * @vport: pointer to a host virtual N_Port data structure.
   * @cmdiocb: pointer to lpfc command iocb data structure.
   * @ndlp: pointer to a node-list data structure.
   *
   * A received RDF implies a possible change to fabric supported diagnostic
   * functions.  This routine sends LS_ACC and then has the Nx_Port issue a new
   * RDF request to reregister for supported diagnostic functions.
   *
   * Return code
   *   0 - Success
   *   -EIO - Failed to process received RDF
   **/
 static int
 lpfc_els_rcv_rdf(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
          struct lpfc_nodelist *ndlp)
 {
     /* Send LS_ACC */
     if (lpfc_els_rsp_acc(vport, ELS_CMD_RDF, cmdiocb, ndlp, NULL)) {
         lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS | LOG_CGN_MGMT,
                  "1623 Failed to RDF_ACC from x%x for x%x\n",
                  ndlp->nlp_DID, vport->fc_myDID);
         return -EIO;
     }
 
     /* Issue new RDF for reregistering */
     if (lpfc_issue_els_rdf(vport, 0)) {
         lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS | LOG_CGN_MGMT,
                  "2623 Failed to re register RDF for x%x\n",
                  vport->fc_myDID);
         return -EIO;
     }
 
     return 0;
 }
 
 /**
  * lpfc_least_capable_settings - helper function for EDC rsp processing
  * @phba: pointer to lpfc hba data structure.
  * @pcgd: pointer to congestion detection descriptor in EDC rsp.
  *
  * This helper routine determines the least capable setting for
  * congestion signals, signal freq, including scale, from the
  * congestion detection descriptor in the EDC rsp.  The routine
  * sets @phba values in preparation for a set_featues mailbox.
  **/
 static void
 lpfc_least_capable_settings(struct lpfc_hba *phba,
                 struct fc_diag_cg_sig_desc *pcgd)
 {
     u32 rsp_sig_cap = 0, drv_sig_cap = 0;
     u32 rsp_sig_freq_cyc = 0, rsp_sig_freq_scale = 0;
 
     /* Get rsp signal and frequency capabilities.  */
     rsp_sig_cap = be32_to_cpu(pcgd->xmt_signal_capability);
     rsp_sig_freq_cyc = be16_to_cpu(pcgd->xmt_signal_frequency.count);
     rsp_sig_freq_scale = be16_to_cpu(pcgd->xmt_signal_frequency.units);
 
     /* If the Fport does not support signals. Set FPIN only */
     if (rsp_sig_cap == EDC_CG_SIG_NOTSUPPORTED)
         goto out_no_support;
 
     /* Apply the xmt scale to the xmt cycle to get the correct frequency.
      * Adapter default is 100 millisSeconds.  Convert all xmt cycle values
      * to milliSeconds.
      */
     switch (rsp_sig_freq_scale) {
     case EDC_CG_SIGFREQ_SEC:
         rsp_sig_freq_cyc *= MSEC_PER_SEC;
         break;
     case EDC_CG_SIGFREQ_MSEC:
         rsp_sig_freq_cyc = 1;
         break;
     default:
         goto out_no_support;
     }
 
     /* Convenient shorthand. */
     drv_sig_cap = phba->cgn_reg_signal;
 
     /* Choose the least capable frequency. */
     if (rsp_sig_freq_cyc > phba->cgn_sig_freq)
         phba->cgn_sig_freq = rsp_sig_freq_cyc;
 
     /* Should be some common signals support. Settle on least capable
      * signal and adjust FPIN values. Initialize defaults to ease the
      * decision.
      */
     phba->cgn_reg_fpin = LPFC_CGN_FPIN_WARN | LPFC_CGN_FPIN_ALARM;
     phba->cgn_reg_signal = EDC_CG_SIG_NOTSUPPORTED;
     if (rsp_sig_cap == EDC_CG_SIG_WARN_ONLY &&
         (drv_sig_cap == EDC_CG_SIG_WARN_ONLY ||
          drv_sig_cap == EDC_CG_SIG_WARN_ALARM)) {
         phba->cgn_reg_signal = EDC_CG_SIG_WARN_ONLY;
         phba->cgn_reg_fpin &= ~LPFC_CGN_FPIN_WARN;
     }
     if (rsp_sig_cap == EDC_CG_SIG_WARN_ALARM) {
         if (drv_sig_cap == EDC_CG_SIG_WARN_ALARM) {
             phba->cgn_reg_signal = EDC_CG_SIG_WARN_ALARM;
             phba->cgn_reg_fpin = LPFC_CGN_FPIN_NONE;
         }
         if (drv_sig_cap == EDC_CG_SIG_WARN_ONLY) {
             phba->cgn_reg_signal = EDC_CG_SIG_WARN_ONLY;
             phba->cgn_reg_fpin &= ~LPFC_CGN_FPIN_WARN;
         }
     }
 
     /* We are NOT recording signal frequency in congestion info buffer */
     return;
 
 out_no_support:
     phba->cgn_reg_signal = EDC_CG_SIG_NOTSUPPORTED;
     phba->cgn_sig_freq = 0;
     phba->cgn_reg_fpin = LPFC_CGN_FPIN_ALARM | LPFC_CGN_FPIN_WARN;
 }
 
 DECLARE_ENUM2STR_LOOKUP(lpfc_get_tlv_dtag_nm, fc_ls_tlv_dtag,
             FC_LS_TLV_DTAG_INIT);
 
 /**
  * lpfc_cmpl_els_edc - Completion callback function for EDC
  * @phba: pointer to lpfc hba data structure.
  * @cmdiocb: pointer to lpfc command iocb data structure.
  * @rspiocb: pointer to lpfc response iocb data structure.
  *
  * This routine is the completion callback function for issuing the Exchange
  * Diagnostic Capabilities (EDC) command. The driver issues an EDC to
  * notify the FPort of its Congestion and Link Fault capabilities.  This
  * routine parses the FPort's response and decides on the least common
  * values applicable to both FPort and NPort for Warnings and Alarms that
  * are communicated via hardware signals.
  **/
 static void
 lpfc_cmpl_els_edc(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
           struct lpfc_iocbq *rspiocb)
 {
     IOCB_t *irsp_iocb;
     struct fc_els_edc_resp *edc_rsp;
     struct fc_tlv_desc *tlv;
     struct fc_diag_cg_sig_desc *pcgd;
     struct fc_diag_lnkflt_desc *plnkflt;
     struct lpfc_dmabuf *pcmd, *prsp;
     const char *dtag_nm;
     u32 *pdata, dtag;
     int desc_cnt = 0, bytes_remain;
     bool rcv_cap_desc = false;
     struct lpfc_nodelist *ndlp;
     u32 ulp_status, ulp_word4, tmo, did, iotag;
 
     ndlp = cmdiocb->ndlp;
 
     ulp_status = get_job_ulpstatus(phba, rspiocb);
     ulp_word4 = get_job_word4(phba, rspiocb);
     did = get_job_els_rsp64_did(phba, rspiocb);
 
     if (phba->sli_rev == LPFC_SLI_REV4) {
         tmo = get_wqe_tmo(rspiocb);
         iotag = get_wqe_reqtag(rspiocb);
     } else {
         irsp_iocb = &rspiocb->iocb;
         tmo = irsp_iocb->ulpTimeout;
         iotag = irsp_iocb->ulpIoTag;
     }
 
     lpfc_debugfs_disc_trc(phba->pport, LPFC_DISC_TRC_ELS_CMD,
                   "EDC cmpl:    status:x%x/x%x did:x%x",
                   ulp_status, ulp_word4, did);
 
     /* ELS cmd tag <ulpIoTag> completes */
     lpfc_printf_log(phba, KERN_INFO, LOG_ELS | LOG_CGN_MGMT,
             "4201 EDC cmd tag x%x completes Data: x%x x%x x%x\n",
             iotag, ulp_status, ulp_word4, tmo);
 
     pcmd = cmdiocb->cmd_dmabuf;
     if (!pcmd)
         goto out;
 
     pdata = (u32 *)pcmd->virt;
     if (!pdata)
         goto out;
 
     /* Need to clear signal values, send features MB and RDF with FPIN. */
     if (ulp_status)
         goto out;
 
     prsp = list_get_first(&pcmd->list, struct lpfc_dmabuf, list);
     if (!prsp)
         goto out;
 
     edc_rsp = prsp->virt;
     if (!edc_rsp)
         goto out;
 
     /* ELS cmd tag <ulpIoTag> completes */
     lpfc_printf_log(phba, KERN_INFO, LOG_ELS | LOG_CGN_MGMT,
             "4676 Fabric EDC Rsp: "
             "0x%02x, 0x%08x\n",
             edc_rsp->acc_hdr.la_cmd,
             be32_to_cpu(edc_rsp->desc_list_len));
 
     /*
      * Payload length in bytes is the response descriptor list
      * length minus the 12 bytes of Link Service Request
      * Information descriptor in the reply.
      */
     bytes_remain = be32_to_cpu(edc_rsp->desc_list_len) -
                    sizeof(struct fc_els_lsri_desc);
     if (bytes_remain <= 0)
         goto out;
 
     tlv = edc_rsp->desc;
 
     /*
      * cycle through EDC diagnostic descriptors to find the
      * congestion signaling capability descriptor
      */
     while (bytes_remain) {
         if (bytes_remain < FC_TLV_DESC_HDR_SZ) {
             lpfc_printf_log(phba, KERN_WARNING, LOG_CGN_MGMT,
                     "6461 Truncated TLV hdr on "
                     "Diagnostic descriptor[%d]\n",
                     desc_cnt);
             goto out;
         }
 
         dtag = be32_to_cpu(tlv->desc_tag);
         switch (dtag) {
         case ELS_DTAG_LNK_FAULT_CAP:
             if (bytes_remain < FC_TLV_DESC_SZ_FROM_LENGTH(tlv) ||
                 FC_TLV_DESC_SZ_FROM_LENGTH(tlv) !=
                     sizeof(struct fc_diag_lnkflt_desc)) {
                 lpfc_printf_log(
                     phba, KERN_WARNING, LOG_CGN_MGMT,
                     "6462 Truncated Link Fault Diagnostic "
                     "descriptor[%d]: %d vs 0x%zx 0x%zx\n",
                     desc_cnt, bytes_remain,
                     FC_TLV_DESC_SZ_FROM_LENGTH(tlv),
                     sizeof(struct fc_diag_cg_sig_desc));
                 goto out;
             }
             plnkflt = (struct fc_diag_lnkflt_desc *)tlv;
             lpfc_printf_log(
                 phba, KERN_INFO, LOG_ELS | LOG_CGN_MGMT,
                 "4617 Link Fault Desc Data: 0x%08x 0x%08x "
                 "0x%08x 0x%08x 0x%08x\n",
                 be32_to_cpu(plnkflt->desc_tag),
                 be32_to_cpu(plnkflt->desc_len),
                 be32_to_cpu(
                     plnkflt->degrade_activate_threshold),
                 be32_to_cpu(
                     plnkflt->degrade_deactivate_threshold),
                 be32_to_cpu(plnkflt->fec_degrade_interval));
             break;
         case ELS_DTAG_CG_SIGNAL_CAP:
             if (bytes_remain < FC_TLV_DESC_SZ_FROM_LENGTH(tlv) ||
                 FC_TLV_DESC_SZ_FROM_LENGTH(tlv) !=
                     sizeof(struct fc_diag_cg_sig_desc)) {
                 lpfc_printf_log(
                     phba, KERN_WARNING, LOG_CGN_MGMT,
                     "6463 Truncated Cgn Signal Diagnostic "
                     "descriptor[%d]: %d vs 0x%zx 0x%zx\n",
                     desc_cnt, bytes_remain,
                     FC_TLV_DESC_SZ_FROM_LENGTH(tlv),
                     sizeof(struct fc_diag_cg_sig_desc));
                 goto out;
             }
 
             pcgd = (struct fc_diag_cg_sig_desc *)tlv;
             lpfc_printf_log(
                 phba, KERN_INFO, LOG_ELS | LOG_CGN_MGMT,
                 "4616 CGN Desc Data: 0x%08x 0x%08x "
                 "0x%08x 0x%04x 0x%04x 0x%08x 0x%04x 0x%04x\n",
                 be32_to_cpu(pcgd->desc_tag),
                 be32_to_cpu(pcgd->desc_len),
                 be32_to_cpu(pcgd->xmt_signal_capability),
                 be16_to_cpu(pcgd->xmt_signal_frequency.count),
                 be16_to_cpu(pcgd->xmt_signal_frequency.units),
                 be32_to_cpu(pcgd->rcv_signal_capability),
                 be16_to_cpu(pcgd->rcv_signal_frequency.count),
                 be16_to_cpu(pcgd->rcv_signal_frequency.units));
 
             /* Compare driver and Fport capabilities and choose
              * least common.
              */
             lpfc_least_capable_settings(phba, pcgd);
             rcv_cap_desc = true;
             break;
         default:
             dtag_nm = lpfc_get_tlv_dtag_nm(dtag);
             lpfc_printf_log(phba, KERN_WARNING, LOG_CGN_MGMT,
                     "4919 unknown Diagnostic "
                     "Descriptor[%d]: tag x%x (%s)\n",
                     desc_cnt, dtag, dtag_nm);
         }
 
         bytes_remain -= FC_TLV_DESC_SZ_FROM_LENGTH(tlv);
         tlv = fc_tlv_next_desc(tlv);
         desc_cnt++;
     }
 
 out:
     if (!rcv_cap_desc) {
         phba->cgn_reg_fpin = LPFC_CGN_FPIN_ALARM | LPFC_CGN_FPIN_WARN;
         phba->cgn_reg_signal = EDC_CG_SIG_NOTSUPPORTED;
         phba->cgn_sig_freq = 0;
         lpfc_printf_log(phba, KERN_WARNING, LOG_ELS | LOG_CGN_MGMT,
                 "4202 EDC rsp error - sending RDF "
                 "for FPIN only.\n");
     }
 
     lpfc_config_cgn_signal(phba);
 
     /* Check to see if link went down during discovery */
     lpfc_els_chk_latt(phba->pport);
     lpfc_debugfs_disc_trc(phba->pport, LPFC_DISC_TRC_ELS_CMD,
                   "EDC Cmpl:     did:x%x refcnt %d",
                   ndlp->nlp_DID, kref_read(&ndlp->kref), 0);
     lpfc_els_free_iocb(phba, cmdiocb);
     lpfc_nlp_put(ndlp);
 }
 
 static void
 lpfc_format_edc_cgn_desc(struct lpfc_hba *phba, struct fc_diag_cg_sig_desc *cgd)
 {
     /* We are assuming cgd was zero'ed before calling this routine */
 
     /* Configure the congestion detection capability */
     cgd->desc_tag = cpu_to_be32(ELS_DTAG_CG_SIGNAL_CAP);
 
     /* Descriptor len doesn't include the tag or len fields. */
     cgd->desc_len = cpu_to_be32(
         FC_TLV_DESC_LENGTH_FROM_SZ(struct fc_diag_cg_sig_desc));
 
     /* xmt_signal_capability already set to EDC_CG_SIG_NOTSUPPORTED.
      * xmt_signal_frequency.count already set to 0.
      * xmt_signal_frequency.units already set to 0.
      */
 
     if (phba->cmf_active_mode == LPFC_CFG_OFF) {
         /* rcv_signal_capability already set to EDC_CG_SIG_NOTSUPPORTED.
          * rcv_signal_frequency.count already set to 0.
          * rcv_signal_frequency.units already set to 0.
          */
         phba->cgn_sig_freq = 0;
         return;
     }
     switch (phba->cgn_reg_signal) {
     case EDC_CG_SIG_WARN_ONLY:
         cgd->rcv_signal_capability = cpu_to_be32(EDC_CG_SIG_WARN_ONLY);
         break;
     case EDC_CG_SIG_WARN_ALARM:
         cgd->rcv_signal_capability = cpu_to_be32(EDC_CG_SIG_WARN_ALARM);
         break;
     default:
         /* rcv_signal_capability left 0 thus no support */
         break;
     }
 
     /* We start negotiation with lpfc_fabric_cgn_frequency, after
      * the completion we settle on the higher frequency.
      */
     cgd->rcv_signal_frequency.count =
         cpu_to_be16(lpfc_fabric_cgn_frequency);
     cgd->rcv_signal_frequency.units =
         cpu_to_be16(EDC_CG_SIGFREQ_MSEC);
 }
 
  /**
   * lpfc_issue_els_edc - Exchange Diagnostic Capabilities with the fabric.
   * @vport: pointer to a host virtual N_Port data structure.
   * @retry: retry counter for the command iocb.
   *
   * This routine issues an ELS EDC to the F-Port Controller to communicate
   * this N_Port's support of hardware signals in its Congestion
   * Capabilities Descriptor.
   *
   * Note: This routine does not check if one or more signals are
   * set in the cgn_reg_signal parameter.  The caller makes the
   * decision to enforce cgn_reg_signal as nonzero or zero depending
   * on the conditions.  During Fabric requests, the driver
   * requires cgn_reg_signals to be nonzero.  But a dynamic request
   * to set the congestion mode to OFF from Monitor or Manage
   * would correctly issue an EDC with no signals enabled to
   * turn off switch functionality and then update the FW.
   *
   * Return code
   *   0 - Successfully issued edc command
   *   1 - Failed to issue edc command
   **/
 int
 lpfc_issue_els_edc(struct lpfc_vport *vport, uint8_t retry)
 {
     struct lpfc_hba  *phba = vport->phba;
     struct lpfc_iocbq *elsiocb;
     struct lpfc_els_edc_req *edc_req;
     struct fc_diag_cg_sig_desc *cgn_desc;
     u16 cmdsize;
     struct lpfc_nodelist *ndlp;
     u8 *pcmd = NULL;
     u32 edc_req_size, cgn_desc_size;
     int rc;
 
     if (vport->port_type == LPFC_NPIV_PORT)
         return -EACCES;
 
     ndlp = lpfc_findnode_did(vport, Fabric_DID);
     if (!ndlp || ndlp->nlp_state != NLP_STE_UNMAPPED_NODE)
         return -ENODEV;
 
     /* If HBA doesn't support signals, drop into RDF */
     if (!phba->cgn_init_reg_signal)
         goto try_rdf;
 
     edc_req_size = sizeof(struct fc_els_edc);
     cgn_desc_size = sizeof(struct fc_diag_cg_sig_desc);
     cmdsize = edc_req_size + cgn_desc_size;
     elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp,
                      ndlp->nlp_DID, ELS_CMD_EDC);
     if (!elsiocb)
         goto try_rdf;
 
     /* Configure the payload for the supported Diagnostics capabilities. */
     pcmd = (u8 *)elsiocb->cmd_dmabuf->virt;
     memset(pcmd, 0, cmdsize);
     edc_req = (struct lpfc_els_edc_req *)pcmd;
     edc_req->edc.desc_len = cpu_to_be32(cgn_desc_size);
     edc_req->edc.edc_cmd = ELS_EDC;
 
     cgn_desc = &edc_req->cgn_desc;
 
     lpfc_format_edc_cgn_desc(phba, cgn_desc);
 
     phba->cgn_sig_freq = lpfc_fabric_cgn_frequency;
 
     lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS | LOG_CGN_MGMT,
              "4623 Xmit EDC to remote "
              "NPORT x%x reg_sig x%x reg_fpin:x%x\n",
              ndlp->nlp_DID, phba->cgn_reg_signal,
              phba->cgn_reg_fpin);
 
     elsiocb->cmd_cmpl = lpfc_cmpl_els_disc_cmd;
     elsiocb->ndlp = lpfc_nlp_get(ndlp);
     if (!elsiocb->ndlp) {
         lpfc_els_free_iocb(phba, elsiocb);
         return -EIO;
     }
 
     lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
                   "Issue EDC:     did:x%x refcnt %d",
                   ndlp->nlp_DID, kref_read(&ndlp->kref), 0);
     rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
     if (rc == IOCB_ERROR) {
         /* The additional lpfc_nlp_put will cause the following
          * lpfc_els_free_iocb routine to trigger the rlease of
          * the node.
          */
         lpfc_els_free_iocb(phba, elsiocb);
         lpfc_nlp_put(ndlp);
         goto try_rdf;
     }
     return 0;
 try_rdf:
     phba->cgn_reg_fpin = LPFC_CGN_FPIN_WARN | LPFC_CGN_FPIN_ALARM;
     phba->cgn_reg_signal = EDC_CG_SIG_NOTSUPPORTED;
     rc = lpfc_issue_els_rdf(vport, 0);
     return rc;
 }
 
 /**
  * lpfc_cancel_retry_delay_tmo - Cancel the timer with delayed iocb-cmd retry
  * @vport: pointer to a host virtual N_Port data structure.
  * @nlp: pointer to a node-list data structure.
  *
  * This routine cancels the timer with a delayed IOCB-command retry for
  * a @vport's @ndlp. It stops the timer for the delayed function retrial and
  * removes the ELS retry event if it presents. In addition, if the
  * NLP_NPR_2B_DISC bit is set in the @nlp's nlp_flag bitmap, ADISC IOCB
  * commands are sent for the @vport's nodes that require issuing discovery
  * ADISC.
  **/
 void
 lpfc_cancel_retry_delay_tmo(struct lpfc_vport *vport, struct lpfc_nodelist *nlp)
 {
     struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
     struct lpfc_work_evt *evtp;
 
     if (!(nlp->nlp_flag & NLP_DELAY_TMO))
         return;
     spin_lock_irq(&nlp->lock);
     nlp->nlp_flag &= ~NLP_DELAY_TMO;
     spin_unlock_irq(&nlp->lock);
     del_timer_sync(&nlp->nlp_delayfunc);
     nlp->nlp_last_elscmd = 0;
     if (!list_empty(&nlp->els_retry_evt.evt_listp)) {
         list_del_init(&nlp->els_retry_evt.evt_listp);
         /* Decrement nlp reference count held for the delayed retry */
         evtp = &nlp->els_retry_evt;
         lpfc_nlp_put((struct lpfc_nodelist *)evtp->evt_arg1);
     }
     if (nlp->nlp_flag & NLP_NPR_2B_DISC) {
         spin_lock_irq(&nlp->lock);
         nlp->nlp_flag &= ~NLP_NPR_2B_DISC;
         spin_unlock_irq(&nlp->lock);
         if (vport->num_disc_nodes) {
             if (vport->port_state < LPFC_VPORT_READY) {
                 /* Check if there are more ADISCs to be sent */
                 lpfc_more_adisc(vport);
             } else {
                 /* Check if there are more PLOGIs to be sent */
                 lpfc_more_plogi(vport);
                 if (vport->num_disc_nodes == 0) {
                     spin_lock_irq(shost->host_lock);
                     vport->fc_flag &= ~FC_NDISC_ACTIVE;
                     spin_unlock_irq(shost->host_lock);
                     lpfc_can_disctmo(vport);
                     lpfc_end_rscn(vport);
                 }
             }
         }
     }
     return;
 }
 
 /**
  * lpfc_els_retry_delay - Timer function with a ndlp delayed function timer
  * @t: pointer to the timer function associated data (ndlp).
  *
  * This routine is invoked by the ndlp delayed-function timer to check
  * whether there is any pending ELS retry event(s) with the node. If not, it
  * simply returns. Otherwise, if there is at least one ELS delayed event, it
  * adds the delayed events to the HBA work list and invokes the
  * lpfc_worker_wake_up() routine to wake up worker thread to process the
  * event. Note that lpfc_nlp_get() is called before posting the event to
  * the work list to hold reference count of ndlp so that it guarantees the
  * reference to ndlp will still be available when the worker thread gets
  * to the event associated with the ndlp.
  **/
 void
 lpfc_els_retry_delay(struct timer_list *t)
 {
     struct lpfc_nodelist *ndlp = from_timer(ndlp, t, nlp_delayfunc);
     struct lpfc_vport *vport = ndlp->vport;
     struct lpfc_hba   *phba = vport->phba;
     unsigned long flags;
     struct lpfc_work_evt  *evtp = &ndlp->els_retry_evt;
 
     spin_lock_irqsave(&phba->hbalock, flags);
     if (!list_empty(&evtp->evt_listp)) {
         spin_unlock_irqrestore(&phba->hbalock, flags);
         return;
     }
 
     /* We need to hold the node by incrementing the reference
      * count until the queued work is done
      */
     evtp->evt_arg1  = lpfc_nlp_get(ndlp);
     if (evtp->evt_arg1) {
         evtp->evt = LPFC_EVT_ELS_RETRY;
         list_add_tail(&evtp->evt_listp, &phba->work_list);
         lpfc_worker_wake_up(phba);
     }
     spin_unlock_irqrestore(&phba->hbalock, flags);
     return;
 }
 
 /**
  * lpfc_els_retry_delay_handler - Work thread handler for ndlp delayed function
  * @ndlp: pointer to a node-list data structure.
  *
  * This routine is the worker-thread handler for processing the @ndlp delayed
  * event(s), posted by the lpfc_els_retry_delay() routine. It simply retrieves
  * the last ELS command from the associated ndlp and invokes the proper ELS
  * function according to the delayed ELS command to retry the command.
  **/
 void
 lpfc_els_retry_delay_handler(struct lpfc_nodelist *ndlp)
 {
     struct lpfc_vport *vport = ndlp->vport;
     uint32_t cmd, retry;
 
     spin_lock_irq(&ndlp->lock);
     cmd = ndlp->nlp_last_elscmd;
     ndlp->nlp_last_elscmd = 0;
 
     if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
         spin_unlock_irq(&ndlp->lock);
         return;
     }
 
     ndlp->nlp_flag &= ~NLP_DELAY_TMO;
     spin_unlock_irq(&ndlp->lock);
     /*
      * If a discovery event readded nlp_delayfunc after timer
      * firing and before processing the timer, cancel the
      * nlp_delayfunc.
      */
     del_timer_sync(&ndlp->nlp_delayfunc);
     retry = ndlp->nlp_retry;
     ndlp->nlp_retry = 0;
 
     switch (cmd) {
     case ELS_CMD_FLOGI:
         lpfc_issue_els_flogi(vport, ndlp, retry);
         break;
     case ELS_CMD_PLOGI:
         if (!lpfc_issue_els_plogi(vport, ndlp->nlp_DID, retry)) {
             ndlp->nlp_prev_state = ndlp->nlp_state;
             lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
         }
         break;
     case ELS_CMD_ADISC:
         if (!lpfc_issue_els_adisc(vport, ndlp, retry)) {
             ndlp->nlp_prev_state = ndlp->nlp_state;
             lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
         }
         break;
     case ELS_CMD_PRLI:
     case ELS_CMD_NVMEPRLI:
         if (!lpfc_issue_els_prli(vport, ndlp, retry)) {
             ndlp->nlp_prev_state = ndlp->nlp_state;
             lpfc_nlp_set_state(vport, ndlp, NLP_STE_PRLI_ISSUE);
         }
         break;
     case ELS_CMD_LOGO:
         if (!lpfc_issue_els_logo(vport, ndlp, retry)) {
             ndlp->nlp_prev_state = ndlp->nlp_state;
             lpfc_nlp_set_state(vport, ndlp, NLP_STE_LOGO_ISSUE);
         }
         break;
     case ELS_CMD_FDISC:
         if (!(vport->fc_flag & FC_VPORT_NEEDS_INIT_VPI))
             lpfc_issue_els_fdisc(vport, ndlp, retry);
         break;
     }
     return;
 }
 
 /**
  * lpfc_link_reset - Issue link reset
  * @vport: pointer to a virtual N_Port data structure.
  *
  * This routine performs link reset by sending INIT_LINK mailbox command.
  * For SLI-3 adapter, link attention interrupt is enabled before issuing
  * INIT_LINK mailbox command.
  *
  * Return code
  *   0 - Link reset initiated successfully
  *   1 - Failed to initiate link reset
  **/
 int
 lpfc_link_reset(struct lpfc_vport *vport)
 {
     struct lpfc_hba *phba = vport->phba;
     LPFC_MBOXQ_t *mbox;
     uint32_t control;
     int rc;
 
     lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
              "2851 Attempt link reset\n");
     mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
     if (!mbox) {
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "2852 Failed to allocate mbox memory");
         return 1;
     }
 
     /* Enable Link attention interrupts */
     if (phba->sli_rev <= LPFC_SLI_REV3) {
         spin_lock_irq(&phba->hbalock);
         phba->sli.sli_flag |= LPFC_PROCESS_LA;
         control = readl(phba->HCregaddr);
         control |= HC_LAINT_ENA;
         writel(control, phba->HCregaddr);
         readl(phba->HCregaddr); /* flush */
         spin_unlock_irq(&phba->hbalock);
     }
 
     lpfc_init_link(phba, mbox, phba->cfg_topology,
                phba->cfg_link_speed);
     mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
     mbox->vport = vport;
     rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
     if ((rc != MBX_BUSY) && (rc != MBX_SUCCESS)) {
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "2853 Failed to issue INIT_LINK "
                 "mbox command, rc:x%x\n", rc);
         mempool_free(mbox, phba->mbox_mem_pool);
         return 1;
     }
 
     return 0;
 }
 
 /**
  * lpfc_els_retry - Make retry decision on an els command iocb
  * @phba: pointer to lpfc hba data structure.
  * @cmdiocb: pointer to lpfc command iocb data structure.
  * @rspiocb: pointer to lpfc response iocb data structure.
  *
  * This routine makes a retry decision on an ELS command IOCB, which has
  * failed. The following ELS IOCBs use this function for retrying the command
  * when previously issued command responsed with error status: FLOGI, PLOGI,
  * PRLI, ADISC and FDISC. Based on the ELS command type and the
  * returned error status, it makes the decision whether a retry shall be
  * issued for the command, and whether a retry shall be made immediately or
  * delayed. In the former case, the corresponding ELS command issuing-function
  * is called to retry the command. In the later case, the ELS command shall
  * be posted to the ndlp delayed event and delayed function timer set to the
  * ndlp for the delayed command issusing.
  *
  * Return code
  *   0 - No retry of els command is made
  *   1 - Immediate or delayed retry of els command is made
  **/
 static int
 lpfc_els_retry(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
            struct lpfc_iocbq *rspiocb)
 {
     struct lpfc_vport *vport = cmdiocb->vport;
     union lpfc_wqe128 *irsp = &rspiocb->wqe;
     struct lpfc_nodelist *ndlp = cmdiocb->ndlp;
     struct lpfc_dmabuf *pcmd = cmdiocb->cmd_dmabuf;
     uint32_t *elscmd;
     struct ls_rjt stat;
     int retry = 0, maxretry = lpfc_max_els_tries, delay = 0;
     int logerr = 0;
     uint32_t cmd = 0;
     uint32_t did;
     int link_reset = 0, rc;
     u32 ulp_status = get_job_ulpstatus(phba, rspiocb);
     u32 ulp_word4 = get_job_word4(phba, rspiocb);
 
 
     /* Note: cmd_dmabuf may be 0 for internal driver abort
      * of delays ELS command.
      */
 
     if (pcmd && pcmd->virt) {
         elscmd = (uint32_t *) (pcmd->virt);
         cmd = *elscmd++;
     }
 
     if (ndlp)
         did = ndlp->nlp_DID;
     else {
         /* We should only hit this case for retrying PLOGI */
         did = get_job_els_rsp64_did(phba, rspiocb);
         ndlp = lpfc_findnode_did(vport, did);
         if (!ndlp && (cmd != ELS_CMD_PLOGI))
             return 0;
     }
 
     lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
         "Retry ELS:       wd7:x%x wd4:x%x did:x%x",
         *(((uint32_t *)irsp) + 7), ulp_word4, did);
 
     switch (ulp_status) {
     case IOSTAT_FCP_RSP_ERROR:
         break;
     case IOSTAT_REMOTE_STOP:
         if (phba->sli_rev == LPFC_SLI_REV4) {
             /* This IO was aborted by the target, we don't
              * know the rxid and because we did not send the
              * ABTS we cannot generate and RRQ.
              */
             lpfc_set_rrq_active(phba, ndlp,
                      cmdiocb->sli4_lxritag, 0, 0);
         }
         break;
     case IOSTAT_LOCAL_REJECT:
         switch ((ulp_word4 & IOERR_PARAM_MASK)) {
         case IOERR_LOOP_OPEN_FAILURE:
             if (cmd == ELS_CMD_PLOGI && cmdiocb->retry == 0)
                 delay = 1000;
             retry = 1;
             break;
 
         case IOERR_ILLEGAL_COMMAND:
             lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
                      "0124 Retry illegal cmd x%x "
                      "retry:x%x delay:x%x\n",
                      cmd, cmdiocb->retry, delay);
             retry = 1;
             /* All command's retry policy */
             maxretry = 8;
             if (cmdiocb->retry > 2)
                 delay = 1000;
             break;
 
         case IOERR_NO_RESOURCES:
             logerr = 1; /* HBA out of resources */
             retry = 1;
             if (cmdiocb->retry > 100)
                 delay = 100;
             maxretry = 250;
             break;
 
         case IOERR_ILLEGAL_FRAME:
             delay = 100;
             retry = 1;
             break;
 
         case IOERR_INVALID_RPI:
             if (cmd == ELS_CMD_PLOGI &&
                 did == NameServer_DID) {
                 /* Continue forever if plogi to */
                 /* the nameserver fails */
                 maxretry = 0;
                 delay = 100;
             }
             retry = 1;
             break;
 
         case IOERR_SEQUENCE_TIMEOUT:
             if (cmd == ELS_CMD_PLOGI &&
                 did == NameServer_DID &&
                 (cmdiocb->retry + 1) == maxretry) {
                 /* Reset the Link */
                 link_reset = 1;
                 break;
             }
             retry = 1;
             delay = 100;
             break;
         case IOERR_SLI_ABORTED:
             /* Retry ELS PLOGI command?
              * Possibly the rport just wasn't ready.
              */
             if (cmd == ELS_CMD_PLOGI) {
                 /* No retry if state change */
                 if (ndlp &&
                     ndlp->nlp_state != NLP_STE_PLOGI_ISSUE)
                     goto out_retry;
                 retry = 1;
                 maxretry = 2;
             }
             break;
         }
         break;
 
     case IOSTAT_NPORT_RJT:
     case IOSTAT_FABRIC_RJT:
         if (ulp_word4 & RJT_UNAVAIL_TEMP) {
             retry = 1;
             break;
         }
         break;
 
     case IOSTAT_NPORT_BSY:
     case IOSTAT_FABRIC_BSY:
         logerr = 1; /* Fabric / Remote NPort out of resources */
         retry = 1;
         break;
 
     case IOSTAT_LS_RJT:
         stat.un.ls_rjt_error_be = cpu_to_be32(ulp_word4);
         /* Added for Vendor specifc support
          * Just keep retrying for these Rsn / Exp codes
          */
         if ((vport->fc_flag & FC_PT2PT) &&
             cmd == ELS_CMD_NVMEPRLI) {
             switch (stat.un.b.lsRjtRsnCode) {
             case LSRJT_UNABLE_TPC:
             case LSRJT_INVALID_CMD:
             case LSRJT_LOGICAL_ERR:
             case LSRJT_CMD_UNSUPPORTED:
                 lpfc_printf_vlog(vport, KERN_WARNING, LOG_ELS,
                          "0168 NVME PRLI LS_RJT "
                          "reason %x port doesn't "
                          "support NVME, disabling NVME\n",
                          stat.un.b.lsRjtRsnCode);
                 retry = 0;
                 vport->fc_flag |= FC_PT2PT_NO_NVME;
                 goto out_retry;
             }
         }
         switch (stat.un.b.lsRjtRsnCode) {
         case LSRJT_UNABLE_TPC:
             /* The driver has a VALID PLOGI but the rport has
              * rejected the PRLI - can't do it now.  Delay
              * for 1 second and try again.
              *
              * However, if explanation is REQ_UNSUPPORTED there's
              * no point to retry PRLI.
              */
             if ((cmd == ELS_CMD_PRLI || cmd == ELS_CMD_NVMEPRLI) &&
                 stat.un.b.lsRjtRsnCodeExp !=
                 LSEXP_REQ_UNSUPPORTED) {
                 delay = 1000;
                 maxretry = lpfc_max_els_tries + 1;
                 retry = 1;
                 break;
             }
 
             /* Legacy bug fix code for targets with PLOGI delays. */
             if (stat.un.b.lsRjtRsnCodeExp ==
                 LSEXP_CMD_IN_PROGRESS) {
                 if (cmd == ELS_CMD_PLOGI) {
                     delay = 1000;
                     maxretry = 48;
                 }
                 retry = 1;
                 break;
             }
             if (stat.un.b.lsRjtRsnCodeExp ==
                 LSEXP_CANT_GIVE_DATA) {
                 if (cmd == ELS_CMD_PLOGI) {
                     delay = 1000;
                     maxretry = 48;
                 }
                 retry = 1;
                 break;
             }
             if (cmd == ELS_CMD_PLOGI) {
                 delay = 1000;
                 maxretry = lpfc_max_els_tries + 1;
                 retry = 1;
                 break;
             }
             if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
               (cmd == ELS_CMD_FDISC) &&
               (stat.un.b.lsRjtRsnCodeExp == LSEXP_OUT_OF_RESOURCE)){
                 lpfc_printf_vlog(vport, KERN_ERR,
                          LOG_TRACE_EVENT,
                          "0125 FDISC Failed (x%x). "
                          "Fabric out of resources\n",
                          stat.un.lsRjtError);
                 lpfc_vport_set_state(vport,
                              FC_VPORT_NO_FABRIC_RSCS);
             }
             break;
 
         case LSRJT_LOGICAL_BSY:
             if ((cmd == ELS_CMD_PLOGI) ||
                 (cmd == ELS_CMD_PRLI) ||
                 (cmd == ELS_CMD_NVMEPRLI)) {
                 delay = 1000;
                 maxretry = 48;
             } else if (cmd == ELS_CMD_FDISC) {
                 /* FDISC retry policy */
                 maxretry = 48;
                 if (cmdiocb->retry >= 32)
                     delay = 1000;
             }
             retry = 1;
             break;
 
         case LSRJT_LOGICAL_ERR:
             /* There are some cases where switches return this
              * error when they are not ready and should be returning
              * Logical Busy. We should delay every time.
              */
             if (cmd == ELS_CMD_FDISC &&
                 stat.un.b.lsRjtRsnCodeExp == LSEXP_PORT_LOGIN_REQ) {
                 maxretry = 3;
                 delay = 1000;
                 retry = 1;
             } else if (cmd == ELS_CMD_FLOGI &&
                    stat.un.b.lsRjtRsnCodeExp ==
                         LSEXP_NOTHING_MORE) {
                 vport->fc_sparam.cmn.bbRcvSizeMsb &= 0xf;
                 retry = 1;
                 lpfc_printf_vlog(vport, KERN_ERR,
                          LOG_TRACE_EVENT,
                          "0820 FLOGI Failed (x%x). "
                          "BBCredit Not Supported\n",
                          stat.un.lsRjtError);
             }
             break;
 
         case LSRJT_PROTOCOL_ERR:
             if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
               (cmd == ELS_CMD_FDISC) &&
               ((stat.un.b.lsRjtRsnCodeExp == LSEXP_INVALID_PNAME) ||
               (stat.un.b.lsRjtRsnCodeExp == LSEXP_INVALID_NPORT_ID))
               ) {
                 lpfc_printf_vlog(vport, KERN_ERR,
                          LOG_TRACE_EVENT,
                          "0122 FDISC Failed (x%x). "
                          "Fabric Detected Bad WWN\n",
                          stat.un.lsRjtError);
                 lpfc_vport_set_state(vport,
                              FC_VPORT_FABRIC_REJ_WWN);
             }
             break;
         case LSRJT_VENDOR_UNIQUE:
             if ((stat.un.b.vendorUnique == 0x45) &&
                 (cmd == ELS_CMD_FLOGI)) {
                 goto out_retry;
             }
             break;
         case LSRJT_CMD_UNSUPPORTED:
             /* lpfc nvmet returns this type of LS_RJT when it
              * receives an FCP PRLI because lpfc nvmet only
              * support NVME.  ELS request is terminated for FCP4
              * on this rport.
              */
             if (stat.un.b.lsRjtRsnCodeExp ==
                 LSEXP_REQ_UNSUPPORTED) {
                 if (cmd == ELS_CMD_PRLI) {
                     spin_lock_irq(&ndlp->lock);
                     ndlp->nlp_flag |= NLP_FCP_PRLI_RJT;
                     spin_unlock_irq(&ndlp->lock);
                     retry = 0;
                     goto out_retry;
                 }
             }
             break;
         }
         break;
 
     case IOSTAT_INTERMED_RSP:
     case IOSTAT_BA_RJT:
         break;
 
     default:
         break;
     }
 
     if (link_reset) {
         rc = lpfc_link_reset(vport);
         if (rc) {
             /* Do not give up. Retry PLOGI one more time and attempt
              * link reset if PLOGI fails again.
              */
             retry = 1;
             delay = 100;
             goto out_retry;
         }
         return 1;
     }
 
     if (did == FDMI_DID)
         retry = 1;
 
     if ((cmd == ELS_CMD_FLOGI) &&
         (phba->fc_topology != LPFC_TOPOLOGY_LOOP) &&
         !lpfc_error_lost_link(ulp_status, ulp_word4)) {
         /* FLOGI retry policy */
         retry = 1;
         /* retry FLOGI forever */
         if (phba->link_flag != LS_LOOPBACK_MODE)
             maxretry = 0;
         else
             maxretry = 2;
 
         if (cmdiocb->retry >= 100)
             delay = 5000;
         else if (cmdiocb->retry >= 32)
             delay = 1000;
     } else if ((cmd == ELS_CMD_FDISC) &&
         !lpfc_error_lost_link(ulp_status, ulp_word4)) {
         /* retry FDISCs every second up to devloss */
         retry = 1;
         maxretry = vport->cfg_devloss_tmo;
         delay = 1000;
     }
 
     cmdiocb->retry++;
     if (maxretry && (cmdiocb->retry >= maxretry)) {
         phba->fc_stat.elsRetryExceeded++;
         retry = 0;
     }
 
     if ((vport->load_flag & FC_UNLOADING) != 0)
         retry = 0;
 
 out_retry:
     if (retry) {
         if ((cmd == ELS_CMD_PLOGI) || (cmd == ELS_CMD_FDISC)) {
             /* Stop retrying PLOGI and FDISC if in FCF discovery */
             if (phba->fcf.fcf_flag & FCF_DISCOVERY) {
                 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
                          "2849 Stop retry ELS command "
                          "x%x to remote NPORT x%x, "
                          "Data: x%x x%x\n", cmd, did,
                          cmdiocb->retry, delay);
                 return 0;
             }
         }
 
         /* Retry ELS command <elsCmd> to remote NPORT <did> */
         lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
                  "0107 Retry ELS command x%x to remote "
                  "NPORT x%x Data: x%x x%x\n",
                  cmd, did, cmdiocb->retry, delay);
 
         if (((cmd == ELS_CMD_PLOGI) || (cmd == ELS_CMD_ADISC)) &&
             ((ulp_status != IOSTAT_LOCAL_REJECT) ||
             ((ulp_word4 & IOERR_PARAM_MASK) !=
             IOERR_NO_RESOURCES))) {
             /* Don't reset timer for no resources */
 
             /* If discovery / RSCN timer is running, reset it */
             if (timer_pending(&vport->fc_disctmo) ||
                 (vport->fc_flag & FC_RSCN_MODE))
                 lpfc_set_disctmo(vport);
         }
 
         phba->fc_stat.elsXmitRetry++;
         if (ndlp && delay) {
             phba->fc_stat.elsDelayRetry++;
             ndlp->nlp_retry = cmdiocb->retry;
 
             /* delay is specified in milliseconds */
             mod_timer(&ndlp->nlp_delayfunc,
                 jiffies + msecs_to_jiffies(delay));
             spin_lock_irq(&ndlp->lock);
             ndlp->nlp_flag |= NLP_DELAY_TMO;
             spin_unlock_irq(&ndlp->lock);
 
             ndlp->nlp_prev_state = ndlp->nlp_state;
             if ((cmd == ELS_CMD_PRLI) ||
                 (cmd == ELS_CMD_NVMEPRLI))
                 lpfc_nlp_set_state(vport, ndlp,
                     NLP_STE_PRLI_ISSUE);
             else if (cmd != ELS_CMD_ADISC)
                 lpfc_nlp_set_state(vport, ndlp,
                     NLP_STE_NPR_NODE);
             ndlp->nlp_last_elscmd = cmd;
 
             return 1;
         }
         switch (cmd) {
         case ELS_CMD_FLOGI:
             lpfc_issue_els_flogi(vport, ndlp, cmdiocb->retry);
             return 1;
         case ELS_CMD_FDISC:
             lpfc_issue_els_fdisc(vport, ndlp, cmdiocb->retry);
             return 1;
         case ELS_CMD_PLOGI:
             if (ndlp) {
                 ndlp->nlp_prev_state = ndlp->nlp_state;
                 lpfc_nlp_set_state(vport, ndlp,
                            NLP_STE_PLOGI_ISSUE);
             }
             lpfc_issue_els_plogi(vport, did, cmdiocb->retry);
             return 1;
         case ELS_CMD_ADISC:
             ndlp->nlp_prev_state = ndlp->nlp_state;
             lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
             lpfc_issue_els_adisc(vport, ndlp, cmdiocb->retry);
             return 1;
         case ELS_CMD_PRLI:
         case ELS_CMD_NVMEPRLI:
             ndlp->nlp_prev_state = ndlp->nlp_state;
             lpfc_nlp_set_state(vport, ndlp, NLP_STE_PRLI_ISSUE);
             lpfc_issue_els_prli(vport, ndlp, cmdiocb->retry);
             return 1;
         case ELS_CMD_LOGO:
             ndlp->nlp_prev_state = ndlp->nlp_state;
             lpfc_nlp_set_state(vport, ndlp, NLP_STE_LOGO_ISSUE);
             lpfc_issue_els_logo(vport, ndlp, cmdiocb->retry);
             return 1;
         }
     }
     /* No retry ELS command <elsCmd> to remote NPORT <did> */
     if (logerr) {
         lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
              "0137 No retry ELS command x%x to remote "
              "NPORT x%x: Out of Resources: Error:x%x/%x\n",
              cmd, did, ulp_status,
              ulp_word4);
     }
     else {
         lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
              "0108 No retry ELS command x%x to remote "
              "NPORT x%x Retried:%d Error:x%x/%x\n",
              cmd, did, cmdiocb->retry, ulp_status,
              ulp_word4);
     }
     return 0;
 }
 
 /**
  * lpfc_els_free_data - Free lpfc dma buffer and data structure with an iocb
  * @phba: pointer to lpfc hba data structure.
  * @buf_ptr1: pointer to the lpfc DMA buffer data structure.
  *
  * This routine releases the lpfc DMA (Direct Memory Access) buffer(s)
  * associated with a command IOCB back to the lpfc DMA buffer pool. It first
  * checks to see whether there is a lpfc DMA buffer associated with the
  * response of the command IOCB. If so, it will be released before releasing
  * the lpfc DMA buffer associated with the IOCB itself.
  *
  * Return code
  *   0 - Successfully released lpfc DMA buffer (currently, always return 0)
  **/
 static int
 lpfc_els_free_data(struct lpfc_hba *phba, struct lpfc_dmabuf *buf_ptr1)
 {
     struct lpfc_dmabuf *buf_ptr;
 
     /* Free the response before processing the command. */
     if (!list_empty(&buf_ptr1->list)) {
         list_remove_head(&buf_ptr1->list, buf_ptr,
                  struct lpfc_dmabuf,
                  list);
         lpfc_mbuf_free(phba, buf_ptr->virt, buf_ptr->phys);
         kfree(buf_ptr);
     }
     lpfc_mbuf_free(phba, buf_ptr1->virt, buf_ptr1->phys);
     kfree(buf_ptr1);
     return 0;
 }
 
 /**
  * lpfc_els_free_bpl - Free lpfc dma buffer and data structure with bpl
  * @phba: pointer to lpfc hba data structure.
  * @buf_ptr: pointer to the lpfc dma buffer data structure.
  *
  * This routine releases the lpfc Direct Memory Access (DMA) buffer
  * associated with a Buffer Pointer List (BPL) back to the lpfc DMA buffer
  * pool.
  *
  * Return code
  *   0 - Successfully released lpfc DMA buffer (currently, always return 0)
  **/
 static int
 lpfc_els_free_bpl(struct lpfc_hba *phba, struct lpfc_dmabuf *buf_ptr)
 {
     lpfc_mbuf_free(phba, buf_ptr->virt, buf_ptr->phys);
     kfree(buf_ptr);
     return 0;
 }
 
 /**
  * lpfc_els_free_iocb - Free a command iocb and its associated resources
  * @phba: pointer to lpfc hba data structure.
  * @elsiocb: pointer to lpfc els command iocb data structure.
  *
  * This routine frees a command IOCB and its associated resources. The
  * command IOCB data structure contains the reference to various associated
  * resources, these fields must be set to NULL if the associated reference
  * not present:
  *   cmd_dmabuf - reference to cmd.
  *   cmd_dmabuf->next - reference to rsp
  *   rsp_dmabuf - unused
  *   bpl_dmabuf - reference to bpl
  *
  * It first properly decrements the reference count held on ndlp for the
  * IOCB completion callback function. If LPFC_DELAY_MEM_FREE flag is not
  * set, it invokes the lpfc_els_free_data() routine to release the Direct
  * Memory Access (DMA) buffers associated with the IOCB. Otherwise, it
  * adds the DMA buffer the @phba data structure for the delayed release.
  * If reference to the Buffer Pointer List (BPL) is present, the
  * lpfc_els_free_bpl() routine is invoked to release the DMA memory
  * associated with BPL. Finally, the lpfc_sli_release_iocbq() routine is
  * invoked to release the IOCB data structure back to @phba IOCBQ list.
  *
  * Return code
  *   0 - Success (currently, always return 0)
  **/
 int
 lpfc_els_free_iocb(struct lpfc_hba *phba, struct lpfc_iocbq *elsiocb)
 {
     struct lpfc_dmabuf *buf_ptr, *buf_ptr1;
 
     /* The I/O iocb is complete.  Clear the node and first dmbuf */
     elsiocb->ndlp = NULL;
 
     /* cmd_dmabuf = cmd,  cmd_dmabuf->next = rsp, bpl_dmabuf = bpl */
     if (elsiocb->cmd_dmabuf) {
         if (elsiocb->cmd_flag & LPFC_DELAY_MEM_FREE) {
             /* Firmware could still be in progress of DMAing
              * payload, so don't free data buffer till after
              * a hbeat.
              */
             elsiocb->cmd_flag &= ~LPFC_DELAY_MEM_FREE;
             buf_ptr = elsiocb->cmd_dmabuf;
             elsiocb->cmd_dmabuf = NULL;
             if (buf_ptr) {
                 buf_ptr1 = NULL;
                 spin_lock_irq(&phba->hbalock);
                 if (!list_empty(&buf_ptr->list)) {
                     list_remove_head(&buf_ptr->list,
                         buf_ptr1, struct lpfc_dmabuf,
                         list);
                     INIT_LIST_HEAD(&buf_ptr1->list);
                     list_add_tail(&buf_ptr1->list,
                         &phba->elsbuf);
                     phba->elsbuf_cnt++;
                 }
                 INIT_LIST_HEAD(&buf_ptr->list);
                 list_add_tail(&buf_ptr->list, &phba->elsbuf);
                 phba->elsbuf_cnt++;
                 spin_unlock_irq(&phba->hbalock);
             }
         } else {
             buf_ptr1 = elsiocb->cmd_dmabuf;
             lpfc_els_free_data(phba, buf_ptr1);
             elsiocb->cmd_dmabuf = NULL;
         }
     }
 
     if (elsiocb->bpl_dmabuf) {
         buf_ptr = elsiocb->bpl_dmabuf;
         lpfc_els_free_bpl(phba, buf_ptr);
         elsiocb->bpl_dmabuf = NULL;
     }
     lpfc_sli_release_iocbq(phba, elsiocb);
     return 0;
 }
 
 /**
  * lpfc_cmpl_els_logo_acc - Completion callback function to logo acc response
  * @phba: pointer to lpfc hba data structure.
  * @cmdiocb: pointer to lpfc command iocb data structure.
  * @rspiocb: pointer to lpfc response iocb data structure.
  *
  * This routine is the completion callback function to the Logout (LOGO)
  * Accept (ACC) Response ELS command. This routine is invoked to indicate
  * the completion of the LOGO process. It invokes the lpfc_nlp_not_used() to
  * release the ndlp if it has the last reference remaining (reference count
  * is 1). If succeeded (meaning ndlp released), it sets the iocb ndlp
  * field to NULL to inform the following lpfc_els_free_iocb() routine no
  * ndlp reference count needs to be decremented. Otherwise, the ndlp
  * reference use-count shall be decremented by the lpfc_els_free_iocb()
  * routine. Finally, the lpfc_els_free_iocb() is invoked to release the
  * IOCB data structure.
  **/
 static void
 lpfc_cmpl_els_logo_acc(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
                struct lpfc_iocbq *rspiocb)
 {
     struct lpfc_nodelist *ndlp = cmdiocb->ndlp;
     struct lpfc_vport *vport = cmdiocb->vport;
     u32 ulp_status, ulp_word4;
 
     ulp_status = get_job_ulpstatus(phba, rspiocb);
     ulp_word4 = get_job_word4(phba, rspiocb);
 
     lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
         "ACC LOGO cmpl:   status:x%x/x%x did:x%x",
         ulp_status, ulp_word4, ndlp->nlp_DID);
     /* ACC to LOGO completes to NPort <nlp_DID> */
     lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
              "0109 ACC to LOGO completes to NPort x%x refcnt %d "
              "Data: x%x x%x x%x\n",
              ndlp->nlp_DID, kref_read(&ndlp->kref), ndlp->nlp_flag,
              ndlp->nlp_state, ndlp->nlp_rpi);
 
     /* This clause allows the LOGO ACC to complete and free resources
      * for the Fabric Domain Controller.  It does deliberately skip
      * the unreg_rpi and release rpi because some fabrics send RDP
      * requests after logging out from the initiator.
      */
     if (ndlp->nlp_type & NLP_FABRIC &&
         ((ndlp->nlp_DID & WELL_KNOWN_DID_MASK) != WELL_KNOWN_DID_MASK))
         goto out;
 
     if (ndlp->nlp_state == NLP_STE_NPR_NODE) {
         /* If PLOGI is being retried, PLOGI completion will cleanup the
          * node. The NLP_NPR_2B_DISC flag needs to be retained to make
          * progress on nodes discovered from last RSCN.
          */
         if ((ndlp->nlp_flag & NLP_DELAY_TMO) &&
             (ndlp->nlp_last_elscmd == ELS_CMD_PLOGI))
             goto out;
 
         /* NPort Recovery mode or node is just allocated */
         if (!lpfc_nlp_not_used(ndlp)) {
             /* A LOGO is completing and the node is in NPR state.
              * Just unregister the RPI because the node is still
              * required.
              */
             lpfc_unreg_rpi(vport, ndlp);
         } else {
             /* Indicate the node has already released, should
              * not reference to it from within lpfc_els_free_iocb.
              */
             cmdiocb->ndlp = NULL;
         }
     }
  out:
     /*
      * The driver received a LOGO from the rport and has ACK'd it.
      * At this point, the driver is done so release the IOCB
      */
     lpfc_els_free_iocb(phba, cmdiocb);
     lpfc_nlp_put(ndlp);
 }
 
 /**
  * lpfc_mbx_cmpl_dflt_rpi - Completion callbk func for unreg dflt rpi mbox cmd
  * @phba: pointer to lpfc hba data structure.
  * @pmb: pointer to the driver internal queue element for mailbox command.
  *
  * This routine is the completion callback function for unregister default
  * RPI (Remote Port Index) mailbox command to the @phba. It simply releases
  * the associated lpfc Direct Memory Access (DMA) buffer back to the pool and
  * decrements the ndlp reference count held for this completion callback
  * function. After that, it invokes the lpfc_nlp_not_used() to check
  * whether there is only one reference left on the ndlp. If so, it will
  * perform one more decrement and trigger the release of the ndlp.
  **/
 void
 lpfc_mbx_cmpl_dflt_rpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
 {
     struct lpfc_nodelist *ndlp = pmb->ctx_ndlp;
     u32 mbx_flag = pmb->mbox_flag;
     u32 mbx_cmd = pmb->u.mb.mbxCommand;
 
     if (ndlp) {
         lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE,
                  "0006 rpi x%x DID:%x flg:%x %d x%px "
                  "mbx_cmd x%x mbx_flag x%x x%px\n",
                  ndlp->nlp_rpi, ndlp->nlp_DID, ndlp->nlp_flag,
                  kref_read(&ndlp->kref), ndlp, mbx_cmd,
                  mbx_flag, pmb);
 
         /* This ends the default/temporary RPI cleanup logic for this
          * ndlp and the node and rpi needs to be released. Free the rpi
          * first on an UNREG_LOGIN and then release the final
          * references.
          */
         spin_lock_irq(&ndlp->lock);
         ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND;
         if (mbx_cmd == MBX_UNREG_LOGIN)
             ndlp->nlp_flag &= ~NLP_UNREG_INP;
         spin_unlock_irq(&ndlp->lock);
         lpfc_nlp_put(ndlp);
         lpfc_drop_node(ndlp->vport, ndlp);
     }
 
     lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED);
 }
 
 /**
  * lpfc_cmpl_els_rsp - Completion callback function for els response iocb cmd
  * @phba: pointer to lpfc hba data structure.
  * @cmdiocb: pointer to lpfc command iocb data structure.
  * @rspiocb: pointer to lpfc response iocb data structure.
  *
  * This routine is the completion callback function for ELS Response IOCB
  * command. In normal case, this callback function just properly sets the
  * nlp_flag bitmap in the ndlp data structure, if the mbox command reference
  * field in the command IOCB is not NULL, the referred mailbox command will
  * be send out, and then invokes the lpfc_els_free_iocb() routine to release
  * the IOCB.
  **/
 static void
 lpfc_cmpl_els_rsp(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
           struct lpfc_iocbq *rspiocb)
 {
     struct lpfc_nodelist *ndlp = cmdiocb->ndlp;
     struct lpfc_vport *vport = ndlp ? ndlp->vport : NULL;
     struct Scsi_Host  *shost = vport ? lpfc_shost_from_vport(vport) : NULL;
     IOCB_t  *irsp;
     LPFC_MBOXQ_t *mbox = NULL;
     u32 ulp_status, ulp_word4, tmo, did, iotag;
 
     if (!vport) {
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "3177 ELS response failed\n");
         goto out;
     }
     if (cmdiocb->context_un.mbox)
         mbox = cmdiocb->context_un.mbox;
 
     ulp_status = get_job_ulpstatus(phba, rspiocb);
     ulp_word4 = get_job_word4(phba, rspiocb);
     did = get_job_els_rsp64_did(phba, cmdiocb);
 
     if (phba->sli_rev == LPFC_SLI_REV4) {
         tmo = get_wqe_tmo(cmdiocb);
         iotag = get_wqe_reqtag(cmdiocb);
     } else {
         irsp = &rspiocb->iocb;
         tmo = irsp->ulpTimeout;
         iotag = irsp->ulpIoTag;
     }
 
     /* Check to see if link went down during discovery */
     if (!ndlp || lpfc_els_chk_latt(vport)) {
         if (mbox)
             lpfc_mbox_rsrc_cleanup(phba, mbox, MBOX_THD_UNLOCKED);
         goto out;
     }
 
     lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
         "ELS rsp cmpl:    status:x%x/x%x did:x%x",
         ulp_status, ulp_word4, did);
     /* ELS response tag <ulpIoTag> completes */
     lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
              "0110 ELS response tag x%x completes "
              "Data: x%x x%x x%x x%x x%x x%x x%x x%x %p %p\n",
              iotag, ulp_status, ulp_word4, tmo,
              ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
              ndlp->nlp_rpi, kref_read(&ndlp->kref), mbox, ndlp);
     if (mbox) {
         if (ulp_status == 0
             && (ndlp->nlp_flag & NLP_ACC_REGLOGIN)) {
             if (!lpfc_unreg_rpi(vport, ndlp) &&
                 (!(vport->fc_flag & FC_PT2PT))) {
                 if (ndlp->nlp_state ==  NLP_STE_PLOGI_ISSUE ||
                     ndlp->nlp_state ==
                      NLP_STE_REG_LOGIN_ISSUE) {
                     lpfc_printf_vlog(vport, KERN_INFO,
                              LOG_DISCOVERY,
                              "0314 PLOGI recov "
                              "DID x%x "
                              "Data: x%x x%x x%x\n",
                              ndlp->nlp_DID,
                              ndlp->nlp_state,
                              ndlp->nlp_rpi,
                              ndlp->nlp_flag);
                     goto out_free_mbox;
                 }
             }
 
             /* Increment reference count to ndlp to hold the
              * reference to ndlp for the callback function.
              */
             mbox->ctx_ndlp = lpfc_nlp_get(ndlp);
             if (!mbox->ctx_ndlp)
                 goto out_free_mbox;
 
             mbox->vport = vport;
             if (ndlp->nlp_flag & NLP_RM_DFLT_RPI) {
                 mbox->mbox_flag |= LPFC_MBX_IMED_UNREG;
                 mbox->mbox_cmpl = lpfc_mbx_cmpl_dflt_rpi;
             }
             else {
                 mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login;
                 ndlp->nlp_prev_state = ndlp->nlp_state;
                 lpfc_nlp_set_state(vport, ndlp,
                        NLP_STE_REG_LOGIN_ISSUE);
             }
 
             ndlp->nlp_flag |= NLP_REG_LOGIN_SEND;
             if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT)
                 != MBX_NOT_FINISHED)
                 goto out;
 
             /* Decrement the ndlp reference count we
              * set for this failed mailbox command.
              */
             lpfc_nlp_put(ndlp);
             ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND;
 
             /* ELS rsp: Cannot issue reg_login for <NPortid> */
             lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
                 "0138 ELS rsp: Cannot issue reg_login for x%x "
                 "Data: x%x x%x x%x\n",
                 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
                 ndlp->nlp_rpi);
         }
 out_free_mbox:
         lpfc_mbox_rsrc_cleanup(phba, mbox, MBOX_THD_UNLOCKED);
     }
 out:
     if (ndlp && shost) {
         spin_lock_irq(&ndlp->lock);
         if (mbox)
             ndlp->nlp_flag &= ~NLP_ACC_REGLOGIN;
         ndlp->nlp_flag &= ~NLP_RM_DFLT_RPI;
         spin_unlock_irq(&ndlp->lock);
     }
 
     /* An SLI4 NPIV instance wants to drop the node at this point under
      * these conditions and release the RPI.
      */
     if (phba->sli_rev == LPFC_SLI_REV4 &&
         (vport && vport->port_type == LPFC_NPIV_PORT) &&
         !(ndlp->fc4_xpt_flags & SCSI_XPT_REGD) &&
         ndlp->nlp_flag & NLP_RELEASE_RPI) {
         if (ndlp->nlp_state !=  NLP_STE_PLOGI_ISSUE &&
             ndlp->nlp_state != NLP_STE_REG_LOGIN_ISSUE) {
             lpfc_sli4_free_rpi(phba, ndlp->nlp_rpi);
             spin_lock_irq(&ndlp->lock);
             ndlp->nlp_rpi = LPFC_RPI_ALLOC_ERROR;
             ndlp->nlp_flag &= ~NLP_RELEASE_RPI;
             spin_unlock_irq(&ndlp->lock);
             lpfc_drop_node(vport, ndlp);
         }
     }
 
     /* Release the originating I/O reference. */
     lpfc_els_free_iocb(phba, cmdiocb);
     lpfc_nlp_put(ndlp);
     return;
 }
 
 /**
  * lpfc_els_rsp_acc - Prepare and issue an acc response iocb command
  * @vport: pointer to a host virtual N_Port data structure.
  * @flag: the els command code to be accepted.
  * @oldiocb: pointer to the original lpfc command iocb data structure.
  * @ndlp: pointer to a node-list data structure.
  * @mbox: pointer to the driver internal queue element for mailbox command.
  *
  * This routine prepares and issues an Accept (ACC) response IOCB
  * command. It uses the @flag to properly set up the IOCB field for the
  * specific ACC response command to be issued and invokes the
  * lpfc_sli_issue_iocb() routine to send out ACC response IOCB. If a
  * @mbox pointer is passed in, it will be put into the context_un.mbox
  * field of the IOCB for the completion callback function to issue the
  * mailbox command to the HBA later when callback is invoked.
  *
  * Note that the ndlp reference count will be incremented by 1 for holding the
  * ndlp and the reference to ndlp will be stored into the ndlp field of
  * the IOCB for the completion callback function to the corresponding
  * response ELS IOCB command.
  *
  * Return code
  *   0 - Successfully issued acc response
  *   1 - Failed to issue acc response
  **/
 int
 lpfc_els_rsp_acc(struct lpfc_vport *vport, uint32_t flag,
          struct lpfc_iocbq *oldiocb, struct lpfc_nodelist *ndlp,
          LPFC_MBOXQ_t *mbox)
 {
     struct lpfc_hba  *phba = vport->phba;
     IOCB_t *icmd;
     IOCB_t *oldcmd;
     union lpfc_wqe128 *wqe;
     union lpfc_wqe128 *oldwqe = &oldiocb->wqe;
     struct lpfc_iocbq *elsiocb;
     uint8_t *pcmd;
     struct serv_parm *sp;
     uint16_t cmdsize;
     int rc;
     ELS_PKT *els_pkt_ptr;
     struct fc_els_rdf_resp *rdf_resp;
 
     switch (flag) {
     case ELS_CMD_ACC:
         cmdsize = sizeof(uint32_t);
         elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry,
                          ndlp, ndlp->nlp_DID, ELS_CMD_ACC);
         if (!elsiocb) {
             spin_lock_irq(&ndlp->lock);
             ndlp->nlp_flag &= ~NLP_LOGO_ACC;
             spin_unlock_irq(&ndlp->lock);
             return 1;
         }
 
         if (phba->sli_rev == LPFC_SLI_REV4) {
             wqe = &elsiocb->wqe;
             /* XRI / rx_id */
             bf_set(wqe_ctxt_tag, &wqe->xmit_els_rsp.wqe_com,
                    bf_get(wqe_ctxt_tag,
                       &oldwqe->xmit_els_rsp.wqe_com));
 
             /* oxid */
             bf_set(wqe_rcvoxid, &wqe->xmit_els_rsp.wqe_com,
                    bf_get(wqe_rcvoxid,
                       &oldwqe->xmit_els_rsp.wqe_com));
         } else {
             icmd = &elsiocb->iocb;
             oldcmd = &oldiocb->iocb;
             icmd->ulpContext = oldcmd->ulpContext; /* Xri / rx_id */
             icmd->unsli3.rcvsli3.ox_id =
                 oldcmd->unsli3.rcvsli3.ox_id;
         }
 
         pcmd = elsiocb->cmd_dmabuf->virt;
         *((uint32_t *) (pcmd)) = ELS_CMD_ACC;
         pcmd += sizeof(uint32_t);
 
         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
             "Issue ACC:       did:x%x flg:x%x",
             ndlp->nlp_DID, ndlp->nlp_flag, 0);
         break;
     case ELS_CMD_FLOGI:
     case ELS_CMD_PLOGI:
         cmdsize = (sizeof(struct serv_parm) + sizeof(uint32_t));
         elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry,
                          ndlp, ndlp->nlp_DID, ELS_CMD_ACC);
         if (!elsiocb)
             return 1;
 
         if (phba->sli_rev == LPFC_SLI_REV4) {
             wqe = &elsiocb->wqe;
             /* XRI / rx_id */
             bf_set(wqe_ctxt_tag, &wqe->xmit_els_rsp.wqe_com,
                    bf_get(wqe_ctxt_tag,
                       &oldwqe->xmit_els_rsp.wqe_com));
 
             /* oxid */
             bf_set(wqe_rcvoxid, &wqe->xmit_els_rsp.wqe_com,
                    bf_get(wqe_rcvoxid,
                       &oldwqe->xmit_els_rsp.wqe_com));
         } else {
             icmd = &elsiocb->iocb;
             oldcmd = &oldiocb->iocb;
             icmd->ulpContext = oldcmd->ulpContext; /* Xri / rx_id */
             icmd->unsli3.rcvsli3.ox_id =
                 oldcmd->unsli3.rcvsli3.ox_id;
         }
 
         pcmd = (u8 *)elsiocb->cmd_dmabuf->virt;
 
         if (mbox)
             elsiocb->context_un.mbox = mbox;
 
         *((uint32_t *) (pcmd)) = ELS_CMD_ACC;
         pcmd += sizeof(uint32_t);
         sp = (struct serv_parm *)pcmd;
 
         if (flag == ELS_CMD_FLOGI) {
             /* Copy the received service parameters back */
             memcpy(sp, &phba->fc_fabparam,
                    sizeof(struct serv_parm));
 
             /* Clear the F_Port bit */
             sp->cmn.fPort = 0;
 
             /* Mark all class service parameters as invalid */
             sp->cls1.classValid = 0;
             sp->cls2.classValid = 0;
             sp->cls3.classValid = 0;
             sp->cls4.classValid = 0;
 
             /* Copy our worldwide names */
             memcpy(&sp->portName, &vport->fc_sparam.portName,
                    sizeof(struct lpfc_name));
             memcpy(&sp->nodeName, &vport->fc_sparam.nodeName,
                    sizeof(struct lpfc_name));
         } else {
             memcpy(pcmd, &vport->fc_sparam,
                    sizeof(struct serv_parm));
 
             sp->cmn.valid_vendor_ver_level = 0;
             memset(sp->un.vendorVersion, 0,
                    sizeof(sp->un.vendorVersion));
             sp->cmn.bbRcvSizeMsb &= 0xF;
 
             /* If our firmware supports this feature, convey that
              * info to the target using the vendor specific field.
              */
             if (phba->sli.sli_flag & LPFC_SLI_SUPPRESS_RSP) {
                 sp->cmn.valid_vendor_ver_level = 1;
                 sp->un.vv.vid = cpu_to_be32(LPFC_VV_EMLX_ID);
                 sp->un.vv.flags =
                     cpu_to_be32(LPFC_VV_SUPPRESS_RSP);
             }
         }
 
         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
             "Issue ACC FLOGI/PLOGI: did:x%x flg:x%x",
             ndlp->nlp_DID, ndlp->nlp_flag, 0);
         break;
     case ELS_CMD_PRLO:
         cmdsize = sizeof(uint32_t) + sizeof(PRLO);
         elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry,
                          ndlp, ndlp->nlp_DID, ELS_CMD_PRLO);
         if (!elsiocb)
             return 1;
 
         if (phba->sli_rev == LPFC_SLI_REV4) {
             wqe = &elsiocb->wqe;
             /* XRI / rx_id */
             bf_set(wqe_ctxt_tag, &wqe->xmit_els_rsp.wqe_com,
                    bf_get(wqe_ctxt_tag,
                       &oldwqe->xmit_els_rsp.wqe_com));
 
             /* oxid */
             bf_set(wqe_rcvoxid, &wqe->xmit_els_rsp.wqe_com,
                    bf_get(wqe_rcvoxid,
                       &oldwqe->xmit_els_rsp.wqe_com));
         } else {
             icmd = &elsiocb->iocb;
             oldcmd = &oldiocb->iocb;
             icmd->ulpContext = oldcmd->ulpContext; /* Xri / rx_id */
             icmd->unsli3.rcvsli3.ox_id =
                 oldcmd->unsli3.rcvsli3.ox_id;
         }
 
         pcmd = (u8 *) elsiocb->cmd_dmabuf->virt;
 
         memcpy(pcmd, oldiocb->cmd_dmabuf->virt,
                sizeof(uint32_t) + sizeof(PRLO));
         *((uint32_t *) (pcmd)) = ELS_CMD_PRLO_ACC;
         els_pkt_ptr = (ELS_PKT *) pcmd;
         els_pkt_ptr->un.prlo.acceptRspCode = PRLO_REQ_EXECUTED;
 
         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
             "Issue ACC PRLO:  did:x%x flg:x%x",
             ndlp->nlp_DID, ndlp->nlp_flag, 0);
         break;
     case ELS_CMD_RDF:
         cmdsize = sizeof(*rdf_resp);
         elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry,
                          ndlp, ndlp->nlp_DID, ELS_CMD_ACC);
         if (!elsiocb)
             return 1;
 
         if (phba->sli_rev == LPFC_SLI_REV4) {
             wqe = &elsiocb->wqe;
             /* XRI / rx_id */
             bf_set(wqe_ctxt_tag, &wqe->xmit_els_rsp.wqe_com,
                    bf_get(wqe_ctxt_tag,
                       &oldwqe->xmit_els_rsp.wqe_com));
 
             /* oxid */
             bf_set(wqe_rcvoxid, &wqe->xmit_els_rsp.wqe_com,
                    bf_get(wqe_rcvoxid,
                       &oldwqe->xmit_els_rsp.wqe_com));
         } else {
             icmd = &elsiocb->iocb;
             oldcmd = &oldiocb->iocb;
             icmd->ulpContext = oldcmd->ulpContext; /* Xri / rx_id */
             icmd->unsli3.rcvsli3.ox_id =
                 oldcmd->unsli3.rcvsli3.ox_id;
         }
 
         pcmd = (u8 *)elsiocb->cmd_dmabuf->virt;
         rdf_resp = (struct fc_els_rdf_resp *)pcmd;
         memset(rdf_resp, 0, sizeof(*rdf_resp));
         rdf_resp->acc_hdr.la_cmd = ELS_LS_ACC;
 
         /* FC-LS-5 specifies desc_list_len shall be set to 12 */
         rdf_resp->desc_list_len = cpu_to_be32(12);
 
         /* FC-LS-5 specifies LS REQ Information descriptor */
         rdf_resp->lsri.desc_tag = cpu_to_be32(1);
         rdf_resp->lsri.desc_len = cpu_to_be32(sizeof(u32));
         rdf_resp->lsri.rqst_w0.cmd = ELS_RDF;
         break;
     default:
         return 1;
     }
     if (ndlp->nlp_flag & NLP_LOGO_ACC) {
         spin_lock_irq(&ndlp->lock);
         if (!(ndlp->nlp_flag & NLP_RPI_REGISTERED ||
             ndlp->nlp_flag & NLP_REG_LOGIN_SEND))
             ndlp->nlp_flag &= ~NLP_LOGO_ACC;
         spin_unlock_irq(&ndlp->lock);
         elsiocb->cmd_cmpl = lpfc_cmpl_els_logo_acc;
     } else {
         elsiocb->cmd_cmpl = lpfc_cmpl_els_rsp;
     }
 
     phba->fc_stat.elsXmitACC++;
     elsiocb->ndlp = lpfc_nlp_get(ndlp);
     if (!elsiocb->ndlp) {
         lpfc_els_free_iocb(phba, elsiocb);
         return 1;
     }
 
     rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
     if (rc == IOCB_ERROR) {
         lpfc_els_free_iocb(phba, elsiocb);
         lpfc_nlp_put(ndlp);
         return 1;
     }
 
     /* Xmit ELS ACC response tag <ulpIoTag> */
     lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
              "0128 Xmit ELS ACC response Status: x%x, IoTag: x%x, "
              "XRI: x%x, DID: x%x, nlp_flag: x%x nlp_state: x%x "
              "RPI: x%x, fc_flag x%x refcnt %d\n",
              rc, elsiocb->iotag, elsiocb->sli4_xritag,
              ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
              ndlp->nlp_rpi, vport->fc_flag, kref_read(&ndlp->kref));
     return 0;
 }
 
 /**
  * lpfc_els_rsp_reject - Prepare and issue a rjt response iocb command
  * @vport: pointer to a virtual N_Port data structure.
  * @rejectError: reject response to issue
  * @oldiocb: pointer to the original lpfc command iocb data structure.
  * @ndlp: pointer to a node-list data structure.
  * @mbox: pointer to the driver internal queue element for mailbox command.
  *
  * This routine prepares and issue an Reject (RJT) response IOCB
  * command. If a @mbox pointer is passed in, it will be put into the
  * context_un.mbox field of the IOCB for the completion callback function
  * to issue to the HBA later.
  *
  * Note that the ndlp reference count will be incremented by 1 for holding the
  * ndlp and the reference to ndlp will be stored into the ndlp field of
  * the IOCB for the completion callback function to the reject response
  * ELS IOCB command.
  *
  * Return code
  *   0 - Successfully issued reject response
  *   1 - Failed to issue reject response
  **/
 int
 lpfc_els_rsp_reject(struct lpfc_vport *vport, uint32_t rejectError,
             struct lpfc_iocbq *oldiocb, struct lpfc_nodelist *ndlp,
             LPFC_MBOXQ_t *mbox)
 {
     int rc;
     struct lpfc_hba  *phba = vport->phba;
     IOCB_t *icmd;
     IOCB_t *oldcmd;
     union lpfc_wqe128 *wqe;
     struct lpfc_iocbq *elsiocb;
     uint8_t *pcmd;
     uint16_t cmdsize;
 
     cmdsize = 2 * sizeof(uint32_t);
     elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp,
                      ndlp->nlp_DID, ELS_CMD_LS_RJT);
     if (!elsiocb)
         return 1;
 
     if (phba->sli_rev == LPFC_SLI_REV4) {
         wqe = &elsiocb->wqe;
         bf_set(wqe_ctxt_tag, &wqe->generic.wqe_com,
                get_job_ulpcontext(phba, oldiocb)); /* Xri / rx_id */
         bf_set(wqe_rcvoxid, &wqe->xmit_els_rsp.wqe_com,
                get_job_rcvoxid(phba, oldiocb));
     } else {
         icmd = &elsiocb->iocb;
         oldcmd = &oldiocb->iocb;
         icmd->ulpContext = oldcmd->ulpContext; /* Xri / rx_id */
         icmd->unsli3.rcvsli3.ox_id = oldcmd->unsli3.rcvsli3.ox_id;
     }
 
     pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt;
 
     *((uint32_t *) (pcmd)) = ELS_CMD_LS_RJT;
     pcmd += sizeof(uint32_t);
     *((uint32_t *) (pcmd)) = rejectError;
 
     if (mbox)
         elsiocb->context_un.mbox = mbox;
 
     /* Xmit ELS RJT <err> response tag <ulpIoTag> */
     lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
              "0129 Xmit ELS RJT x%x response tag x%x "
              "xri x%x, did x%x, nlp_flag x%x, nlp_state x%x, "
              "rpi x%x\n",
              rejectError, elsiocb->iotag,
              get_job_ulpcontext(phba, elsiocb), ndlp->nlp_DID,
              ndlp->nlp_flag, ndlp->nlp_state, ndlp->nlp_rpi);
     lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
         "Issue LS_RJT:    did:x%x flg:x%x err:x%x",
         ndlp->nlp_DID, ndlp->nlp_flag, rejectError);
 
     phba->fc_stat.elsXmitLSRJT++;
     elsiocb->cmd_cmpl = lpfc_cmpl_els_rsp;
     elsiocb->ndlp = lpfc_nlp_get(ndlp);
     if (!elsiocb->ndlp) {
         lpfc_els_free_iocb(phba, elsiocb);
         return 1;
     }
 
     /* The NPIV instance is rejecting this unsolicited ELS. Make sure the
      * node's assigned RPI gets released provided this node is not already
      * registered with the transport.
      */
     if (phba->sli_rev == LPFC_SLI_REV4 &&
         vport->port_type == LPFC_NPIV_PORT &&
         !(ndlp->fc4_xpt_flags & SCSI_XPT_REGD)) {
         spin_lock_irq(&ndlp->lock);
         ndlp->nlp_flag |= NLP_RELEASE_RPI;
         spin_unlock_irq(&ndlp->lock);
     }
 
     rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
     if (rc == IOCB_ERROR) {
         lpfc_els_free_iocb(phba, elsiocb);
         lpfc_nlp_put(ndlp);
         return 1;
     }
 
     return 0;
 }
 
  /**
   * lpfc_issue_els_edc_rsp - Exchange Diagnostic Capabilities with the fabric.
   * @vport: pointer to a host virtual N_Port data structure.
   * @cmdiocb: pointer to the original lpfc command iocb data structure.
   * @ndlp: NPort to where rsp is directed
   *
   * This routine issues an EDC ACC RSP to the F-Port Controller to communicate
   * this N_Port's support of hardware signals in its Congestion
   * Capabilities Descriptor.
   *
   * Return code
   *   0 - Successfully issued edc rsp command
   *   1 - Failed to issue edc rsp command
   **/
 static int
 lpfc_issue_els_edc_rsp(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
                struct lpfc_nodelist *ndlp)
 {
     struct lpfc_hba  *phba = vport->phba;
     struct lpfc_els_edc_rsp *edc_rsp;
     struct lpfc_iocbq *elsiocb;
     IOCB_t *icmd, *cmd;
     union lpfc_wqe128 *wqe;
     uint8_t *pcmd;
     int cmdsize, rc;
 
     cmdsize = sizeof(struct lpfc_els_edc_rsp);
     elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, cmdiocb->retry,
                      ndlp, ndlp->nlp_DID, ELS_CMD_ACC);
     if (!elsiocb)
         return 1;
 
     if (phba->sli_rev == LPFC_SLI_REV4) {
         wqe = &elsiocb->wqe;
         bf_set(wqe_ctxt_tag, &wqe->generic.wqe_com,
                get_job_ulpcontext(phba, cmdiocb)); /* Xri / rx_id */
         bf_set(wqe_rcvoxid, &wqe->xmit_els_rsp.wqe_com,
                get_job_rcvoxid(phba, cmdiocb));
     } else {
         icmd = &elsiocb->iocb;
         cmd = &cmdiocb->iocb;
         icmd->ulpContext = cmd->ulpContext; /* Xri / rx_id */
         icmd->unsli3.rcvsli3.ox_id = cmd->unsli3.rcvsli3.ox_id;
     }
 
     pcmd = elsiocb->cmd_dmabuf->virt;
     memset(pcmd, 0, cmdsize);
 
     edc_rsp = (struct lpfc_els_edc_rsp *)pcmd;
     edc_rsp->edc_rsp.acc_hdr.la_cmd = ELS_LS_ACC;
     edc_rsp->edc_rsp.desc_list_len = cpu_to_be32(
         FC_TLV_DESC_LENGTH_FROM_SZ(struct lpfc_els_edc_rsp));
     edc_rsp->edc_rsp.lsri.desc_tag = cpu_to_be32(ELS_DTAG_LS_REQ_INFO);
     edc_rsp->edc_rsp.lsri.desc_len = cpu_to_be32(
         FC_TLV_DESC_LENGTH_FROM_SZ(struct fc_els_lsri_desc));
     edc_rsp->edc_rsp.lsri.rqst_w0.cmd = ELS_EDC;
     lpfc_format_edc_cgn_desc(phba, &edc_rsp->cgn_desc);
 
     lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
                   "Issue EDC ACC:      did:x%x flg:x%x refcnt %d",
                   ndlp->nlp_DID, ndlp->nlp_flag,
                   kref_read(&ndlp->kref));
     elsiocb->cmd_cmpl = lpfc_cmpl_els_rsp;
 
     phba->fc_stat.elsXmitACC++;
     elsiocb->ndlp = lpfc_nlp_get(ndlp);
     if (!elsiocb->ndlp) {
         lpfc_els_free_iocb(phba, elsiocb);
         return 1;
     }
 
     rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
     if (rc == IOCB_ERROR) {
         lpfc_els_free_iocb(phba, elsiocb);
         lpfc_nlp_put(ndlp);
         return 1;
     }
 
     /* Xmit ELS ACC response tag <ulpIoTag> */
     lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
              "0152 Xmit EDC ACC response Status: x%x, IoTag: x%x, "
              "XRI: x%x, DID: x%x, nlp_flag: x%x nlp_state: x%x "
              "RPI: x%x, fc_flag x%x\n",
              rc, elsiocb->iotag, elsiocb->sli4_xritag,
              ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
              ndlp->nlp_rpi, vport->fc_flag);
 
     return 0;
 }
 
 /**
  * lpfc_els_rsp_adisc_acc - Prepare and issue acc response to adisc iocb cmd
  * @vport: pointer to a virtual N_Port data structure.
  * @oldiocb: pointer to the original lpfc command iocb data structure.
  * @ndlp: pointer to a node-list data structure.
  *
  * This routine prepares and issues an Accept (ACC) response to Address
  * Discover (ADISC) ELS command. It simply prepares the payload of the IOCB
  * and invokes the lpfc_sli_issue_iocb() routine to send out the command.
  *
  * Note that the ndlp reference count will be incremented by 1 for holding the
  * ndlp and the reference to ndlp will be stored into the ndlp field of
  * the IOCB for the completion callback function to the ADISC Accept response
  * ELS IOCB command.
  *
  * Return code
  *   0 - Successfully issued acc adisc response
  *   1 - Failed to issue adisc acc response
  **/
 int
 lpfc_els_rsp_adisc_acc(struct lpfc_vport *vport, struct lpfc_iocbq *oldiocb,
                struct lpfc_nodelist *ndlp)
 {
     struct lpfc_hba  *phba = vport->phba;
     ADISC *ap;
     IOCB_t *icmd, *oldcmd;
     union lpfc_wqe128 *wqe;
     struct lpfc_iocbq *elsiocb;
     uint8_t *pcmd;
     uint16_t cmdsize;
     int rc;
     u32 ulp_context;
 
     cmdsize = sizeof(uint32_t) + sizeof(ADISC);
     elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp,
                      ndlp->nlp_DID, ELS_CMD_ACC);
     if (!elsiocb)
         return 1;
 
     if (phba->sli_rev == LPFC_SLI_REV4) {
         wqe = &elsiocb->wqe;
         /* XRI / rx_id */
         bf_set(wqe_ctxt_tag, &wqe->generic.wqe_com,
                get_job_ulpcontext(phba, oldiocb));
         ulp_context = get_job_ulpcontext(phba, elsiocb);
         /* oxid */
         bf_set(wqe_rcvoxid, &wqe->xmit_els_rsp.wqe_com,
                get_job_rcvoxid(phba, oldiocb));
     } else {
         icmd = &elsiocb->iocb;
         oldcmd = &oldiocb->iocb;
         icmd->ulpContext = oldcmd->ulpContext; /* Xri / rx_id */
         ulp_context = elsiocb->iocb.ulpContext;
         icmd->unsli3.rcvsli3.ox_id =
             oldcmd->unsli3.rcvsli3.ox_id;
     }
 
     /* Xmit ADISC ACC response tag <ulpIoTag> */
     lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
              "0130 Xmit ADISC ACC response iotag x%x xri: "
              "x%x, did x%x, nlp_flag x%x, nlp_state x%x rpi x%x\n",
              elsiocb->iotag, ulp_context,
              ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
              ndlp->nlp_rpi);
     pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt;
 
     *((uint32_t *) (pcmd)) = ELS_CMD_ACC;
     pcmd += sizeof(uint32_t);
 
     ap = (ADISC *) (pcmd);
     ap->hardAL_PA = phba->fc_pref_ALPA;
     memcpy(&ap->portName, &vport->fc_portname, sizeof(struct lpfc_name));
     memcpy(&ap->nodeName, &vport->fc_nodename, sizeof(struct lpfc_name));
     ap->DID = be32_to_cpu(vport->fc_myDID);
 
     lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
               "Issue ACC ADISC: did:x%x flg:x%x refcnt %d",
               ndlp->nlp_DID, ndlp->nlp_flag, kref_read(&ndlp->kref));
 
     phba->fc_stat.elsXmitACC++;
     elsiocb->cmd_cmpl = lpfc_cmpl_els_rsp;
     elsiocb->ndlp = lpfc_nlp_get(ndlp);
     if (!elsiocb->ndlp) {
         lpfc_els_free_iocb(phba, elsiocb);
         return 1;
     }
 
     rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
     if (rc == IOCB_ERROR) {
         lpfc_els_free_iocb(phba, elsiocb);
         lpfc_nlp_put(ndlp);
         return 1;
     }
 
     return 0;
 }
 
 /**
  * lpfc_els_rsp_prli_acc - Prepare and issue acc response to prli iocb cmd
  * @vport: pointer to a virtual N_Port data structure.
  * @oldiocb: pointer to the original lpfc command iocb data structure.
  * @ndlp: pointer to a node-list data structure.
  *
  * This routine prepares and issues an Accept (ACC) response to Process
  * Login (PRLI) ELS command. It simply prepares the payload of the IOCB
  * and invokes the lpfc_sli_issue_iocb() routine to send out the command.
  *
  * Note that the ndlp reference count will be incremented by 1 for holding the
  * ndlp and the reference to ndlp will be stored into the ndlp field of
  * the IOCB for the completion callback function to the PRLI Accept response
  * ELS IOCB command.
  *
  * Return code
  *   0 - Successfully issued acc prli response
  *   1 - Failed to issue acc prli response
  **/
 int
 lpfc_els_rsp_prli_acc(struct lpfc_vport *vport, struct lpfc_iocbq *oldiocb,
               struct lpfc_nodelist *ndlp)
 {
     struct lpfc_hba  *phba = vport->phba;
     PRLI *npr;
     struct lpfc_nvme_prli *npr_nvme;
     lpfc_vpd_t *vpd;
     IOCB_t *icmd;
     IOCB_t *oldcmd;
     union lpfc_wqe128 *wqe;
     struct lpfc_iocbq *elsiocb;
     uint8_t *pcmd;
     uint16_t cmdsize;
     uint32_t prli_fc4_req, *req_payload;
     struct lpfc_dmabuf *req_buf;
     int rc;
     u32 elsrspcmd, ulp_context;
 
     /* Need the incoming PRLI payload to determine if the ACC is for an
      * FC4 or NVME PRLI type.  The PRLI type is at word 1.
      */
     req_buf = oldiocb->cmd_dmabuf;
     req_payload = (((uint32_t *)req_buf->virt) + 1);
 
     /* PRLI type payload is at byte 3 for FCP or NVME. */
     prli_fc4_req = be32_to_cpu(*req_payload);
     prli_fc4_req = (prli_fc4_req >> 24) & 0xff;
     lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
              "6127 PRLI_ACC:  Req Type x%x, Word1 x%08x\n",
              prli_fc4_req, *((uint32_t *)req_payload));
 
     if (prli_fc4_req == PRLI_FCP_TYPE) {
         cmdsize = sizeof(uint32_t) + sizeof(PRLI);
         elsrspcmd = (ELS_CMD_ACC | (ELS_CMD_PRLI & ~ELS_RSP_MASK));
     } else if (prli_fc4_req & PRLI_NVME_TYPE) {
         cmdsize = sizeof(uint32_t) + sizeof(struct lpfc_nvme_prli);
         elsrspcmd = (ELS_CMD_ACC | (ELS_CMD_NVMEPRLI & ~ELS_RSP_MASK));
     } else {
         return 1;
     }
 
     elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp,
                      ndlp->nlp_DID, elsrspcmd);
     if (!elsiocb)
         return 1;
 
     if (phba->sli_rev == LPFC_SLI_REV4) {
         wqe = &elsiocb->wqe;
         bf_set(wqe_ctxt_tag, &wqe->generic.wqe_com,
                get_job_ulpcontext(phba, oldiocb)); /* Xri / rx_id */
         ulp_context = get_job_ulpcontext(phba, elsiocb);
         bf_set(wqe_rcvoxid, &wqe->xmit_els_rsp.wqe_com,
                get_job_rcvoxid(phba, oldiocb));
     } else {
         icmd = &elsiocb->iocb;
         oldcmd = &oldiocb->iocb;
         icmd->ulpContext = oldcmd->ulpContext; /* Xri / rx_id */
         ulp_context = elsiocb->iocb.ulpContext;
         icmd->unsli3.rcvsli3.ox_id =
             oldcmd->unsli3.rcvsli3.ox_id;
     }
 
     /* Xmit PRLI ACC response tag <ulpIoTag> */
     lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
              "0131 Xmit PRLI ACC response tag x%x xri x%x, "
              "did x%x, nlp_flag x%x, nlp_state x%x, rpi x%x\n",
              elsiocb->iotag, ulp_context,
              ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
              ndlp->nlp_rpi);
     pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt;
     memset(pcmd, 0, cmdsize);
 
     *((uint32_t *)(pcmd)) = elsrspcmd;
     pcmd += sizeof(uint32_t);
 
     /* For PRLI, remainder of payload is PRLI parameter page */
     vpd = &phba->vpd;
 
     if (prli_fc4_req == PRLI_FCP_TYPE) {
         /*
          * If the remote port is a target and our firmware version
          * is 3.20 or later, set the following bits for FC-TAPE
          * support.
          */
         npr = (PRLI *) pcmd;
         if ((ndlp->nlp_type & NLP_FCP_TARGET) &&
             (vpd->rev.feaLevelHigh >= 0x02)) {
             npr->ConfmComplAllowed = 1;
             npr->Retry = 1;
             npr->TaskRetryIdReq = 1;
         }
         npr->acceptRspCode = PRLI_REQ_EXECUTED;
         npr->estabImagePair = 1;
         npr->readXferRdyDis = 1;
         npr->ConfmComplAllowed = 1;
         npr->prliType = PRLI_FCP_TYPE;
         npr->initiatorFunc = 1;
     } else if (prli_fc4_req & PRLI_NVME_TYPE) {
         /* Respond with an NVME PRLI Type */
         npr_nvme = (struct lpfc_nvme_prli *) pcmd;
         bf_set(prli_type_code, npr_nvme, PRLI_NVME_TYPE);
         bf_set(prli_estabImagePair, npr_nvme, 0);  /* Should be 0 */
         bf_set(prli_acc_rsp_code, npr_nvme, PRLI_REQ_EXECUTED);
         if (phba->nvmet_support) {
             bf_set(prli_tgt, npr_nvme, 1);
             bf_set(prli_disc, npr_nvme, 1);
             if (phba->cfg_nvme_enable_fb) {
                 bf_set(prli_fba, npr_nvme, 1);
 
                 /* TBD.  Target mode needs to post buffers
                  * that support the configured first burst
                  * byte size.
                  */
                 bf_set(prli_fb_sz, npr_nvme,
                        phba->cfg_nvmet_fb_size);
             }
         } else {
             bf_set(prli_init, npr_nvme, 1);
         }
 
         lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC,
                  "6015 NVME issue PRLI ACC word1 x%08x "
                  "word4 x%08x word5 x%08x flag x%x, "
                  "fcp_info x%x nlp_type x%x\n",
                  npr_nvme->word1, npr_nvme->word4,
                  npr_nvme->word5, ndlp->nlp_flag,
                  ndlp->nlp_fcp_info, ndlp->nlp_type);
         npr_nvme->word1 = cpu_to_be32(npr_nvme->word1);
         npr_nvme->word4 = cpu_to_be32(npr_nvme->word4);
         npr_nvme->word5 = cpu_to_be32(npr_nvme->word5);
     } else
         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
                  "6128 Unknown FC_TYPE x%x x%x ndlp x%06x\n",
                  prli_fc4_req, ndlp->nlp_fc4_type,
                  ndlp->nlp_DID);
 
     lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
               "Issue ACC PRLI:  did:x%x flg:x%x",
               ndlp->nlp_DID, ndlp->nlp_flag, kref_read(&ndlp->kref));
 
     phba->fc_stat.elsXmitACC++;
     elsiocb->cmd_cmpl = lpfc_cmpl_els_rsp;
     elsiocb->ndlp =  lpfc_nlp_get(ndlp);
     if (!elsiocb->ndlp) {
         lpfc_els_free_iocb(phba, elsiocb);
         return 1;
     }
 
     rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
     if (rc == IOCB_ERROR) {
         lpfc_els_free_iocb(phba, elsiocb);
         lpfc_nlp_put(ndlp);
         return 1;
     }
 
     return 0;
 }
 
 /**
  * lpfc_els_rsp_rnid_acc - Issue rnid acc response iocb command
  * @vport: pointer to a virtual N_Port data structure.
  * @format: rnid command format.
  * @oldiocb: pointer to the original lpfc command iocb data structure.
  * @ndlp: pointer to a node-list data structure.
  *
  * This routine issues a Request Node Identification Data (RNID) Accept
  * (ACC) response. It constructs the RNID ACC response command according to
  * the proper @format and then calls the lpfc_sli_issue_iocb() routine to
  * issue the response.
  *
  * Note that the ndlp reference count will be incremented by 1 for holding the
  * ndlp and the reference to ndlp will be stored into the ndlp field of
  * the IOCB for the completion callback function.
  *
  * Return code
  *   0 - Successfully issued acc rnid response
  *   1 - Failed to issue acc rnid response
  **/
 static int
 lpfc_els_rsp_rnid_acc(struct lpfc_vport *vport, uint8_t format,
               struct lpfc_iocbq *oldiocb, struct lpfc_nodelist *ndlp)
 {
     struct lpfc_hba  *phba = vport->phba;
     RNID *rn;
     IOCB_t *icmd, *oldcmd;
     union lpfc_wqe128 *wqe;
     struct lpfc_iocbq *elsiocb;
     uint8_t *pcmd;
     uint16_t cmdsize;
     int rc;
     u32 ulp_context;
 
     cmdsize = sizeof(uint32_t) + sizeof(uint32_t)
                     + (2 * sizeof(struct lpfc_name));
     if (format)
         cmdsize += sizeof(RNID_TOP_DISC);
 
     elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp,
                      ndlp->nlp_DID, ELS_CMD_ACC);
     if (!elsiocb)
         return 1;
 
     if (phba->sli_rev == LPFC_SLI_REV4) {
         wqe = &elsiocb->wqe;
         bf_set(wqe_ctxt_tag, &wqe->generic.wqe_com,
                get_job_ulpcontext(phba, oldiocb)); /* Xri / rx_id */
         ulp_context = get_job_ulpcontext(phba, elsiocb);
         bf_set(wqe_rcvoxid, &wqe->xmit_els_rsp.wqe_com,
                get_job_rcvoxid(phba, oldiocb));
     } else {
         icmd = &elsiocb->iocb;
         oldcmd = &oldiocb->iocb;
         icmd->ulpContext = oldcmd->ulpContext; /* Xri / rx_id */
         ulp_context = elsiocb->iocb.ulpContext;
         icmd->unsli3.rcvsli3.ox_id =
             oldcmd->unsli3.rcvsli3.ox_id;
     }
 
     /* Xmit RNID ACC response tag <ulpIoTag> */
     lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
              "0132 Xmit RNID ACC response tag x%x xri x%x\n",
              elsiocb->iotag, ulp_context);
     pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt;
     *((uint32_t *) (pcmd)) = ELS_CMD_ACC;
     pcmd += sizeof(uint32_t);
 
     memset(pcmd, 0, sizeof(RNID));
     rn = (RNID *) (pcmd);
     rn->Format = format;
     rn->CommonLen = (2 * sizeof(struct lpfc_name));
     memcpy(&rn->portName, &vport->fc_portname, sizeof(struct lpfc_name));
     memcpy(&rn->nodeName, &vport->fc_nodename, sizeof(struct lpfc_name));
     switch (format) {
     case 0:
         rn->SpecificLen = 0;
         break;
     case RNID_TOPOLOGY_DISC:
         rn->SpecificLen = sizeof(RNID_TOP_DISC);
         memcpy(&rn->un.topologyDisc.portName,
                &vport->fc_portname, sizeof(struct lpfc_name));
         rn->un.topologyDisc.unitType = RNID_HBA;
         rn->un.topologyDisc.physPort = 0;
         rn->un.topologyDisc.attachedNodes = 0;
         break;
     default:
         rn->CommonLen = 0;
         rn->SpecificLen = 0;
         break;
     }
 
     lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
               "Issue ACC RNID:  did:x%x flg:x%x refcnt %d",
               ndlp->nlp_DID, ndlp->nlp_flag, kref_read(&ndlp->kref));
 
     phba->fc_stat.elsXmitACC++;
     elsiocb->cmd_cmpl = lpfc_cmpl_els_rsp;
     elsiocb->ndlp = lpfc_nlp_get(ndlp);
     if (!elsiocb->ndlp) {
         lpfc_els_free_iocb(phba, elsiocb);
         return 1;
     }
 
     rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
     if (rc == IOCB_ERROR) {
         lpfc_els_free_iocb(phba, elsiocb);
         lpfc_nlp_put(ndlp);
         return 1;
     }
 
     return 0;
 }
 
 /**
  * lpfc_els_clear_rrq - Clear the rq that this rrq describes.
  * @vport: pointer to a virtual N_Port data structure.
  * @iocb: pointer to the lpfc command iocb data structure.
  * @ndlp: pointer to a node-list data structure.
  *
  * Return
  **/
 static void
 lpfc_els_clear_rrq(struct lpfc_vport *vport,
            struct lpfc_iocbq *iocb, struct lpfc_nodelist *ndlp)
 {
     struct lpfc_hba  *phba = vport->phba;
     uint8_t *pcmd;
     struct RRQ *rrq;
     uint16_t rxid;
     uint16_t xri;
     struct lpfc_node_rrq *prrq;
 
 
     pcmd = (uint8_t *)iocb->cmd_dmabuf->virt;
     pcmd += sizeof(uint32_t);
     rrq = (struct RRQ *)pcmd;
     rrq->rrq_exchg = be32_to_cpu(rrq->rrq_exchg);
     rxid = bf_get(rrq_rxid, rrq);
 
     lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
             "2883 Clear RRQ for SID:x%x OXID:x%x RXID:x%x"
             " x%x x%x\n",
             be32_to_cpu(bf_get(rrq_did, rrq)),
             bf_get(rrq_oxid, rrq),
             rxid,
             get_wqe_reqtag(iocb),
             get_job_ulpcontext(phba, iocb));
 
     lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
         "Clear RRQ:  did:x%x flg:x%x exchg:x%.08x",
         ndlp->nlp_DID, ndlp->nlp_flag, rrq->rrq_exchg);
     if (vport->fc_myDID == be32_to_cpu(bf_get(rrq_did, rrq)))
         xri = bf_get(rrq_oxid, rrq);
     else
         xri = rxid;
     prrq = lpfc_get_active_rrq(vport, xri, ndlp->nlp_DID);
     if (prrq)
         lpfc_clr_rrq_active(phba, xri, prrq);
     return;
 }
 
 /**
  * lpfc_els_rsp_echo_acc - Issue echo acc response
  * @vport: pointer to a virtual N_Port data structure.
  * @data: pointer to echo data to return in the accept.
  * @oldiocb: pointer to the original lpfc command iocb data structure.
  * @ndlp: pointer to a node-list data structure.
  *
  * Return code
  *   0 - Successfully issued acc echo response
  *   1 - Failed to issue acc echo response
  **/
 static int
 lpfc_els_rsp_echo_acc(struct lpfc_vport *vport, uint8_t *data,
               struct lpfc_iocbq *oldiocb, struct lpfc_nodelist *ndlp)
 {
     struct lpfc_hba  *phba = vport->phba;
     IOCB_t *icmd, *oldcmd;
     union lpfc_wqe128 *wqe;
     struct lpfc_iocbq *elsiocb;
     uint8_t *pcmd;
     uint16_t cmdsize;
     int rc;
     u32 ulp_context;
 
     if (phba->sli_rev == LPFC_SLI_REV4)
         cmdsize = oldiocb->wcqe_cmpl.total_data_placed;
     else
         cmdsize = oldiocb->iocb.unsli3.rcvsli3.acc_len;
 
     /* The accumulated length can exceed the BPL_SIZE.  For
      * now, use this as the limit
      */
     if (cmdsize > LPFC_BPL_SIZE)
         cmdsize = LPFC_BPL_SIZE;
     elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp,
                      ndlp->nlp_DID, ELS_CMD_ACC);
     if (!elsiocb)
         return 1;
 
     if (phba->sli_rev == LPFC_SLI_REV4) {
         wqe = &elsiocb->wqe;
         bf_set(wqe_ctxt_tag, &wqe->generic.wqe_com,
                get_job_ulpcontext(phba, oldiocb)); /* Xri / rx_id */
         ulp_context = get_job_ulpcontext(phba, elsiocb);
         bf_set(wqe_rcvoxid, &wqe->xmit_els_rsp.wqe_com,
                get_job_rcvoxid(phba, oldiocb));
     } else {
         icmd = &elsiocb->iocb;
         oldcmd = &oldiocb->iocb;
         icmd->ulpContext = oldcmd->ulpContext; /* Xri / rx_id */
         ulp_context = elsiocb->iocb.ulpContext;
         icmd->unsli3.rcvsli3.ox_id =
             oldcmd->unsli3.rcvsli3.ox_id;
     }
 
     /* Xmit ECHO ACC response tag <ulpIoTag> */
     lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
              "2876 Xmit ECHO ACC response tag x%x xri x%x\n",
              elsiocb->iotag, ulp_context);
     pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt;
     *((uint32_t *) (pcmd)) = ELS_CMD_ACC;
     pcmd += sizeof(uint32_t);
     memcpy(pcmd, data, cmdsize - sizeof(uint32_t));
 
     lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
               "Issue ACC ECHO:  did:x%x flg:x%x refcnt %d",
               ndlp->nlp_DID, ndlp->nlp_flag, kref_read(&ndlp->kref));
 
     phba->fc_stat.elsXmitACC++;
     elsiocb->cmd_cmpl = lpfc_cmpl_els_rsp;
     elsiocb->ndlp =  lpfc_nlp_get(ndlp);
     if (!elsiocb->ndlp) {
         lpfc_els_free_iocb(phba, elsiocb);
         return 1;
     }
 
     rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
     if (rc == IOCB_ERROR) {
         lpfc_els_free_iocb(phba, elsiocb);
         lpfc_nlp_put(ndlp);
         return 1;
     }
 
     return 0;
 }
 
 /**
  * lpfc_els_disc_adisc - Issue remaining adisc iocbs to npr nodes of a vport
  * @vport: pointer to a host virtual N_Port data structure.
  *
  * This routine issues Address Discover (ADISC) ELS commands to those
  * N_Ports which are in node port recovery state and ADISC has not been issued
  * for the @vport. Each time an ELS ADISC IOCB is issued by invoking the
  * lpfc_issue_els_adisc() routine, the per @vport number of discover count
  * (num_disc_nodes) shall be incremented. If the num_disc_nodes reaches a
  * pre-configured threshold (cfg_discovery_threads), the @vport fc_flag will
  * be marked with FC_NLP_MORE bit and the process of issuing remaining ADISC
  * IOCBs quit for later pick up. On the other hand, after walking through
  * all the ndlps with the @vport and there is none ADISC IOCB issued, the
  * @vport fc_flag shall be cleared with FC_NLP_MORE bit indicating there is
  * no more ADISC need to be sent.
  *
  * Return code
  *    The number of N_Ports with adisc issued.
  **/
 int
 lpfc_els_disc_adisc(struct lpfc_vport *vport)
 {
     struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
     struct lpfc_nodelist *ndlp, *next_ndlp;
     int sentadisc = 0;
 
     /* go thru NPR nodes and issue any remaining ELS ADISCs */
     list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) {
 
         if (ndlp->nlp_state != NLP_STE_NPR_NODE ||
             !(ndlp->nlp_flag & NLP_NPR_ADISC))
             continue;
 
         spin_lock_irq(&ndlp->lock);
         ndlp->nlp_flag &= ~NLP_NPR_ADISC;
         spin_unlock_irq(&ndlp->lock);
 
         if (!(ndlp->nlp_flag & NLP_NPR_2B_DISC)) {
             /* This node was marked for ADISC but was not picked
              * for discovery. This is possible if the node was
              * missing in gidft response.
              *
              * At time of marking node for ADISC, we skipped unreg
              * from backend
              */
             lpfc_nlp_unreg_node(vport, ndlp);
             lpfc_unreg_rpi(vport, ndlp);
             continue;
         }
 
         ndlp->nlp_prev_state = ndlp->nlp_state;
         lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
         lpfc_issue_els_adisc(vport, ndlp, 0);
         sentadisc++;
         vport->num_disc_nodes++;
         if (vport->num_disc_nodes >=
                 vport->cfg_discovery_threads) {
             spin_lock_irq(shost->host_lock);
             vport->fc_flag |= FC_NLP_MORE;
             spin_unlock_irq(shost->host_lock);
             break;
         }
 
     }
     if (sentadisc == 0) {
         spin_lock_irq(shost->host_lock);
         vport->fc_flag &= ~FC_NLP_MORE;
         spin_unlock_irq(shost->host_lock);
     }
     return sentadisc;
 }
 
 /**
  * lpfc_els_disc_plogi - Issue plogi for all npr nodes of a vport before adisc
  * @vport: pointer to a host virtual N_Port data structure.
  *
  * This routine issues Port Login (PLOGI) ELS commands to all the N_Ports
  * which are in node port recovery state, with a @vport. Each time an ELS
  * ADISC PLOGI IOCB is issued by invoking the lpfc_issue_els_plogi() routine,
  * the per @vport number of discover count (num_disc_nodes) shall be
  * incremented. If the num_disc_nodes reaches a pre-configured threshold
  * (cfg_discovery_threads), the @vport fc_flag will be marked with FC_NLP_MORE
  * bit set and quit the process of issuing remaining ADISC PLOGIN IOCBs for
  * later pick up. On the other hand, after walking through all the ndlps with
  * the @vport and there is none ADISC PLOGI IOCB issued, the @vport fc_flag
  * shall be cleared with the FC_NLP_MORE bit indicating there is no more ADISC
  * PLOGI need to be sent.
  *
  * Return code
  *   The number of N_Ports with plogi issued.
  **/
 int
 lpfc_els_disc_plogi(struct lpfc_vport *vport)
 {
     struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
     struct lpfc_nodelist *ndlp, *next_ndlp;
     int sentplogi = 0;
 
     /* go thru NPR nodes and issue any remaining ELS PLOGIs */
     list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) {
         if (ndlp->nlp_state == NLP_STE_NPR_NODE &&
                 (ndlp->nlp_flag & NLP_NPR_2B_DISC) != 0 &&
                 (ndlp->nlp_flag & NLP_DELAY_TMO) == 0 &&
                 (ndlp->nlp_flag & NLP_NPR_ADISC) == 0) {
             ndlp->nlp_prev_state = ndlp->nlp_state;
             lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
             lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
             sentplogi++;
             vport->num_disc_nodes++;
             if (vport->num_disc_nodes >=
                     vport->cfg_discovery_threads) {
                 spin_lock_irq(shost->host_lock);
                 vport->fc_flag |= FC_NLP_MORE;
                 spin_unlock_irq(shost->host_lock);
                 break;
             }
         }
     }
 
     lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
              "6452 Discover PLOGI %d flag x%x\n",
              sentplogi, vport->fc_flag);
 
     if (sentplogi) {
         lpfc_set_disctmo(vport);
     }
     else {
         spin_lock_irq(shost->host_lock);
         vport->fc_flag &= ~FC_NLP_MORE;
         spin_unlock_irq(shost->host_lock);
     }
     return sentplogi;
 }
 
 static uint32_t
 lpfc_rdp_res_link_service(struct fc_rdp_link_service_desc *desc,
         uint32_t word0)
 {
 
     desc->tag = cpu_to_be32(RDP_LINK_SERVICE_DESC_TAG);
     desc->payload.els_req = word0;
     desc->length = cpu_to_be32(sizeof(desc->payload));
 
     return sizeof(struct fc_rdp_link_service_desc);
 }
 
 static uint32_t
 lpfc_rdp_res_sfp_desc(struct fc_rdp_sfp_desc *desc,
         uint8_t *page_a0, uint8_t *page_a2)
 {
     uint16_t wavelength;
     uint16_t temperature;
     uint16_t rx_power;
     uint16_t tx_bias;
     uint16_t tx_power;
     uint16_t vcc;
     uint16_t flag = 0;
     struct sff_trasnceiver_codes_byte4 *trasn_code_byte4;
     struct sff_trasnceiver_codes_byte5 *trasn_code_byte5;
 
     desc->tag = cpu_to_be32(RDP_SFP_DESC_TAG);
 
     trasn_code_byte4 = (struct sff_trasnceiver_codes_byte4 *)
             &page_a0[SSF_TRANSCEIVER_CODE_B4];
     trasn_code_byte5 = (struct sff_trasnceiver_codes_byte5 *)
             &page_a0[SSF_TRANSCEIVER_CODE_B5];
 
     if ((trasn_code_byte4->fc_sw_laser) ||
         (trasn_code_byte5->fc_sw_laser_sl) ||
         (trasn_code_byte5->fc_sw_laser_sn)) {  /* check if its short WL */
         flag |= (SFP_FLAG_PT_SWLASER << SFP_FLAG_PT_SHIFT);
     } else if (trasn_code_byte4->fc_lw_laser) {
         wavelength = (page_a0[SSF_WAVELENGTH_B1] << 8) |
             page_a0[SSF_WAVELENGTH_B0];
         if (wavelength == SFP_WAVELENGTH_LC1310)
             flag |= SFP_FLAG_PT_LWLASER_LC1310 << SFP_FLAG_PT_SHIFT;
         if (wavelength == SFP_WAVELENGTH_LL1550)
             flag |= SFP_FLAG_PT_LWLASER_LL1550 << SFP_FLAG_PT_SHIFT;
     }
     /* check if its SFP+ */
     flag |= ((page_a0[SSF_IDENTIFIER] == SFF_PG0_IDENT_SFP) ?
             SFP_FLAG_CT_SFP_PLUS : SFP_FLAG_CT_UNKNOWN)
                     << SFP_FLAG_CT_SHIFT;
 
     /* check if its OPTICAL */
     flag |= ((page_a0[SSF_CONNECTOR] == SFF_PG0_CONNECTOR_LC) ?
             SFP_FLAG_IS_OPTICAL_PORT : 0)
                     << SFP_FLAG_IS_OPTICAL_SHIFT;
 
     temperature = (page_a2[SFF_TEMPERATURE_B1] << 8 |
         page_a2[SFF_TEMPERATURE_B0]);
     vcc = (page_a2[SFF_VCC_B1] << 8 |
         page_a2[SFF_VCC_B0]);
     tx_power = (page_a2[SFF_TXPOWER_B1] << 8 |
         page_a2[SFF_TXPOWER_B0]);
     tx_bias = (page_a2[SFF_TX_BIAS_CURRENT_B1] << 8 |
         page_a2[SFF_TX_BIAS_CURRENT_B0]);
     rx_power = (page_a2[SFF_RXPOWER_B1] << 8 |
         page_a2[SFF_RXPOWER_B0]);
     desc->sfp_info.temperature = cpu_to_be16(temperature);
     desc->sfp_info.rx_power = cpu_to_be16(rx_power);
     desc->sfp_info.tx_bias = cpu_to_be16(tx_bias);
     desc->sfp_info.tx_power = cpu_to_be16(tx_power);
     desc->sfp_info.vcc = cpu_to_be16(vcc);
 
     desc->sfp_info.flags = cpu_to_be16(flag);
     desc->length = cpu_to_be32(sizeof(desc->sfp_info));
 
     return sizeof(struct fc_rdp_sfp_desc);
 }
 
 static uint32_t
 lpfc_rdp_res_link_error(struct fc_rdp_link_error_status_desc *desc,
         READ_LNK_VAR *stat)
 {
     uint32_t type;
 
     desc->tag = cpu_to_be32(RDP_LINK_ERROR_STATUS_DESC_TAG);
 
     type = VN_PT_PHY_PF_PORT << VN_PT_PHY_SHIFT;
 
     desc->info.port_type = cpu_to_be32(type);
 
     desc->info.link_status.link_failure_cnt =
         cpu_to_be32(stat->linkFailureCnt);
     desc->info.link_status.loss_of_synch_cnt =
         cpu_to_be32(stat->lossSyncCnt);
     desc->info.link_status.loss_of_signal_cnt =
         cpu_to_be32(stat->lossSignalCnt);
     desc->info.link_status.primitive_seq_proto_err =
         cpu_to_be32(stat->primSeqErrCnt);
     desc->info.link_status.invalid_trans_word =
         cpu_to_be32(stat->invalidXmitWord);
     desc->info.link_status.invalid_crc_cnt = cpu_to_be32(stat->crcCnt);
 
     desc->length = cpu_to_be32(sizeof(desc->info));
 
     return sizeof(struct fc_rdp_link_error_status_desc);
 }
 
 static uint32_t
 lpfc_rdp_res_bbc_desc(struct fc_rdp_bbc_desc *desc, READ_LNK_VAR *stat,
               struct lpfc_vport *vport)
 {
     uint32_t bbCredit;
 
     desc->tag = cpu_to_be32(RDP_BBC_DESC_TAG);
 
     bbCredit = vport->fc_sparam.cmn.bbCreditLsb |
             (vport->fc_sparam.cmn.bbCreditMsb << 8);
     desc->bbc_info.port_bbc = cpu_to_be32(bbCredit);
     if (vport->phba->fc_topology != LPFC_TOPOLOGY_LOOP) {
         bbCredit = vport->phba->fc_fabparam.cmn.bbCreditLsb |
             (vport->phba->fc_fabparam.cmn.bbCreditMsb << 8);
         desc->bbc_info.attached_port_bbc = cpu_to_be32(bbCredit);
     } else {
         desc->bbc_info.attached_port_bbc = 0;
     }
 
     desc->bbc_info.rtt = 0;
     desc->length = cpu_to_be32(sizeof(desc->bbc_info));
 
     return sizeof(struct fc_rdp_bbc_desc);
 }
 
 static uint32_t
 lpfc_rdp_res_oed_temp_desc(struct lpfc_hba *phba,
                struct fc_rdp_oed_sfp_desc *desc, uint8_t *page_a2)
 {
     uint32_t flags = 0;
 
     desc->tag = cpu_to_be32(RDP_OED_DESC_TAG);
 
     desc->oed_info.hi_alarm = page_a2[SSF_TEMP_HIGH_ALARM];
     desc->oed_info.lo_alarm = page_a2[SSF_TEMP_LOW_ALARM];
     desc->oed_info.hi_warning = page_a2[SSF_TEMP_HIGH_WARNING];
     desc->oed_info.lo_warning = page_a2[SSF_TEMP_LOW_WARNING];
 
     if (phba->sfp_alarm & LPFC_TRANSGRESSION_HIGH_TEMPERATURE)
         flags |= RDP_OET_HIGH_ALARM;
     if (phba->sfp_alarm & LPFC_TRANSGRESSION_LOW_TEMPERATURE)
         flags |= RDP_OET_LOW_ALARM;
     if (phba->sfp_warning & LPFC_TRANSGRESSION_HIGH_TEMPERATURE)
         flags |= RDP_OET_HIGH_WARNING;
     if (phba->sfp_warning & LPFC_TRANSGRESSION_LOW_TEMPERATURE)
         flags |= RDP_OET_LOW_WARNING;
 
     flags |= ((0xf & RDP_OED_TEMPERATURE) << RDP_OED_TYPE_SHIFT);
     desc->oed_info.function_flags = cpu_to_be32(flags);
     desc->length = cpu_to_be32(sizeof(desc->oed_info));
     return sizeof(struct fc_rdp_oed_sfp_desc);
 }
 
 static uint32_t
 lpfc_rdp_res_oed_voltage_desc(struct lpfc_hba *phba,
                   struct fc_rdp_oed_sfp_desc *desc,
                   uint8_t *page_a2)
 {
     uint32_t flags = 0;
 
     desc->tag = cpu_to_be32(RDP_OED_DESC_TAG);
 
     desc->oed_info.hi_alarm = page_a2[SSF_VOLTAGE_HIGH_ALARM];
     desc->oed_info.lo_alarm = page_a2[SSF_VOLTAGE_LOW_ALARM];
     desc->oed_info.hi_warning = page_a2[SSF_VOLTAGE_HIGH_WARNING];
     desc->oed_info.lo_warning = page_a2[SSF_VOLTAGE_LOW_WARNING];
 
     if (phba->sfp_alarm & LPFC_TRANSGRESSION_HIGH_VOLTAGE)
         flags |= RDP_OET_HIGH_ALARM;
     if (phba->sfp_alarm & LPFC_TRANSGRESSION_LOW_VOLTAGE)
         flags |= RDP_OET_LOW_ALARM;
     if (phba->sfp_warning & LPFC_TRANSGRESSION_HIGH_VOLTAGE)
         flags |= RDP_OET_HIGH_WARNING;
     if (phba->sfp_warning & LPFC_TRANSGRESSION_LOW_VOLTAGE)
         flags |= RDP_OET_LOW_WARNING;
 
     flags |= ((0xf & RDP_OED_VOLTAGE) << RDP_OED_TYPE_SHIFT);
     desc->oed_info.function_flags = cpu_to_be32(flags);
     desc->length = cpu_to_be32(sizeof(desc->oed_info));
     return sizeof(struct fc_rdp_oed_sfp_desc);
 }
 
 static uint32_t
 lpfc_rdp_res_oed_txbias_desc(struct lpfc_hba *phba,
                  struct fc_rdp_oed_sfp_desc *desc,
                  uint8_t *page_a2)
 {
     uint32_t flags = 0;
 
     desc->tag = cpu_to_be32(RDP_OED_DESC_TAG);
 
     desc->oed_info.hi_alarm = page_a2[SSF_BIAS_HIGH_ALARM];
     desc->oed_info.lo_alarm = page_a2[SSF_BIAS_LOW_ALARM];
     desc->oed_info.hi_warning = page_a2[SSF_BIAS_HIGH_WARNING];
     desc->oed_info.lo_warning = page_a2[SSF_BIAS_LOW_WARNING];
 
     if (phba->sfp_alarm & LPFC_TRANSGRESSION_HIGH_TXBIAS)
         flags |= RDP_OET_HIGH_ALARM;
     if (phba->sfp_alarm & LPFC_TRANSGRESSION_LOW_TXBIAS)
         flags |= RDP_OET_LOW_ALARM;
     if (phba->sfp_warning & LPFC_TRANSGRESSION_HIGH_TXBIAS)
         flags |= RDP_OET_HIGH_WARNING;
     if (phba->sfp_warning & LPFC_TRANSGRESSION_LOW_TXBIAS)
         flags |= RDP_OET_LOW_WARNING;
 
     flags |= ((0xf & RDP_OED_TXBIAS) << RDP_OED_TYPE_SHIFT);
     desc->oed_info.function_flags = cpu_to_be32(flags);
     desc->length = cpu_to_be32(sizeof(desc->oed_info));
     return sizeof(struct fc_rdp_oed_sfp_desc);
 }
 
 static uint32_t
 lpfc_rdp_res_oed_txpower_desc(struct lpfc_hba *phba,
                   struct fc_rdp_oed_sfp_desc *desc,
                   uint8_t *page_a2)
 {
     uint32_t flags = 0;
 
     desc->tag = cpu_to_be32(RDP_OED_DESC_TAG);
 
     desc->oed_info.hi_alarm = page_a2[SSF_TXPOWER_HIGH_ALARM];
     desc->oed_info.lo_alarm = page_a2[SSF_TXPOWER_LOW_ALARM];
     desc->oed_info.hi_warning = page_a2[SSF_TXPOWER_HIGH_WARNING];
     desc->oed_info.lo_warning = page_a2[SSF_TXPOWER_LOW_WARNING];
 
     if (phba->sfp_alarm & LPFC_TRANSGRESSION_HIGH_TXPOWER)
         flags |= RDP_OET_HIGH_ALARM;
     if (phba->sfp_alarm & LPFC_TRANSGRESSION_LOW_TXPOWER)
         flags |= RDP_OET_LOW_ALARM;
     if (phba->sfp_warning & LPFC_TRANSGRESSION_HIGH_TXPOWER)
         flags |= RDP_OET_HIGH_WARNING;
     if (phba->sfp_warning & LPFC_TRANSGRESSION_LOW_TXPOWER)
         flags |= RDP_OET_LOW_WARNING;
 
     flags |= ((0xf & RDP_OED_TXPOWER) << RDP_OED_TYPE_SHIFT);
     desc->oed_info.function_flags = cpu_to_be32(flags);
     desc->length = cpu_to_be32(sizeof(desc->oed_info));
     return sizeof(struct fc_rdp_oed_sfp_desc);
 }
 
 
 static uint32_t
 lpfc_rdp_res_oed_rxpower_desc(struct lpfc_hba *phba,
                   struct fc_rdp_oed_sfp_desc *desc,
                   uint8_t *page_a2)
 {
     uint32_t flags = 0;
 
     desc->tag = cpu_to_be32(RDP_OED_DESC_TAG);
 
     desc->oed_info.hi_alarm = page_a2[SSF_RXPOWER_HIGH_ALARM];
     desc->oed_info.lo_alarm = page_a2[SSF_RXPOWER_LOW_ALARM];
     desc->oed_info.hi_warning = page_a2[SSF_RXPOWER_HIGH_WARNING];
     desc->oed_info.lo_warning = page_a2[SSF_RXPOWER_LOW_WARNING];
 
     if (phba->sfp_alarm & LPFC_TRANSGRESSION_HIGH_RXPOWER)
         flags |= RDP_OET_HIGH_ALARM;
     if (phba->sfp_alarm & LPFC_TRANSGRESSION_LOW_RXPOWER)
         flags |= RDP_OET_LOW_ALARM;
     if (phba->sfp_warning & LPFC_TRANSGRESSION_HIGH_RXPOWER)
         flags |= RDP_OET_HIGH_WARNING;
     if (phba->sfp_warning & LPFC_TRANSGRESSION_LOW_RXPOWER)
         flags |= RDP_OET_LOW_WARNING;
 
     flags |= ((0xf & RDP_OED_RXPOWER) << RDP_OED_TYPE_SHIFT);
     desc->oed_info.function_flags = cpu_to_be32(flags);
     desc->length = cpu_to_be32(sizeof(desc->oed_info));
     return sizeof(struct fc_rdp_oed_sfp_desc);
 }
 
 static uint32_t
 lpfc_rdp_res_opd_desc(struct fc_rdp_opd_sfp_desc *desc,
               uint8_t *page_a0, struct lpfc_vport *vport)
 {
     desc->tag = cpu_to_be32(RDP_OPD_DESC_TAG);
     memcpy(desc->opd_info.vendor_name, &page_a0[SSF_VENDOR_NAME], 16);
     memcpy(desc->opd_info.model_number, &page_a0[SSF_VENDOR_PN], 16);
     memcpy(desc->opd_info.serial_number, &page_a0[SSF_VENDOR_SN], 16);
     memcpy(desc->opd_info.revision, &page_a0[SSF_VENDOR_REV], 4);
     memcpy(desc->opd_info.date, &page_a0[SSF_DATE_CODE], 8);
     desc->length = cpu_to_be32(sizeof(desc->opd_info));
     return sizeof(struct fc_rdp_opd_sfp_desc);
 }
 
 static uint32_t
 lpfc_rdp_res_fec_desc(struct fc_fec_rdp_desc *desc, READ_LNK_VAR *stat)
 {
     if (bf_get(lpfc_read_link_stat_gec2, stat) == 0)
         return 0;
     desc->tag = cpu_to_be32(RDP_FEC_DESC_TAG);
 
     desc->info.CorrectedBlocks =
         cpu_to_be32(stat->fecCorrBlkCount);
     desc->info.UncorrectableBlocks =
         cpu_to_be32(stat->fecUncorrBlkCount);
 
     desc->length = cpu_to_be32(sizeof(desc->info));
 
     return sizeof(struct fc_fec_rdp_desc);
 }
 
 static uint32_t
 lpfc_rdp_res_speed(struct fc_rdp_port_speed_desc *desc, struct lpfc_hba *phba)
 {
     uint16_t rdp_cap = 0;
     uint16_t rdp_speed;
 
     desc->tag = cpu_to_be32(RDP_PORT_SPEED_DESC_TAG);
 
     switch (phba->fc_linkspeed) {
     case LPFC_LINK_SPEED_1GHZ:
         rdp_speed = RDP_PS_1GB;
         break;
     case LPFC_LINK_SPEED_2GHZ:
         rdp_speed = RDP_PS_2GB;
         break;
     case LPFC_LINK_SPEED_4GHZ:
         rdp_speed = RDP_PS_4GB;
         break;
     case LPFC_LINK_SPEED_8GHZ:
         rdp_speed = RDP_PS_8GB;
         break;
     case LPFC_LINK_SPEED_10GHZ:
         rdp_speed = RDP_PS_10GB;
         break;
     case LPFC_LINK_SPEED_16GHZ:
         rdp_speed = RDP_PS_16GB;
         break;
     case LPFC_LINK_SPEED_32GHZ:
         rdp_speed = RDP_PS_32GB;
         break;
     case LPFC_LINK_SPEED_64GHZ:
         rdp_speed = RDP_PS_64GB;
         break;
     case LPFC_LINK_SPEED_128GHZ:
         rdp_speed = RDP_PS_128GB;
         break;
     case LPFC_LINK_SPEED_256GHZ:
         rdp_speed = RDP_PS_256GB;
         break;
     default:
         rdp_speed = RDP_PS_UNKNOWN;
         break;
     }
 
     desc->info.port_speed.speed = cpu_to_be16(rdp_speed);
 
     if (phba->lmt & LMT_256Gb)
         rdp_cap |= RDP_PS_256GB;
     if (phba->lmt & LMT_128Gb)
         rdp_cap |= RDP_PS_128GB;
     if (phba->lmt & LMT_64Gb)
         rdp_cap |= RDP_PS_64GB;
     if (phba->lmt & LMT_32Gb)
         rdp_cap |= RDP_PS_32GB;
     if (phba->lmt & LMT_16Gb)
         rdp_cap |= RDP_PS_16GB;
     if (phba->lmt & LMT_10Gb)
         rdp_cap |= RDP_PS_10GB;
     if (phba->lmt & LMT_8Gb)
         rdp_cap |= RDP_PS_8GB;
     if (phba->lmt & LMT_4Gb)
         rdp_cap |= RDP_PS_4GB;
     if (phba->lmt & LMT_2Gb)
         rdp_cap |= RDP_PS_2GB;
     if (phba->lmt & LMT_1Gb)
         rdp_cap |= RDP_PS_1GB;
 
     if (rdp_cap == 0)
         rdp_cap = RDP_CAP_UNKNOWN;
     if (phba->cfg_link_speed != LPFC_USER_LINK_SPEED_AUTO)
         rdp_cap |= RDP_CAP_USER_CONFIGURED;
 
     desc->info.port_speed.capabilities = cpu_to_be16(rdp_cap);
     desc->length = cpu_to_be32(sizeof(desc->info));
     return sizeof(struct fc_rdp_port_speed_desc);
 }
 
 static uint32_t
 lpfc_rdp_res_diag_port_names(struct fc_rdp_port_name_desc *desc,
         struct lpfc_vport *vport)
 {
 
     desc->tag = cpu_to_be32(RDP_PORT_NAMES_DESC_TAG);
 
     memcpy(desc->port_names.wwnn, &vport->fc_nodename,
             sizeof(desc->port_names.wwnn));
 
     memcpy(desc->port_names.wwpn, &vport->fc_portname,
             sizeof(desc->port_names.wwpn));
 
     desc->length = cpu_to_be32(sizeof(desc->port_names));
     return sizeof(struct fc_rdp_port_name_desc);
 }
 
 static uint32_t
 lpfc_rdp_res_attach_port_names(struct fc_rdp_port_name_desc *desc,
         struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
 {
 
     desc->tag = cpu_to_be32(RDP_PORT_NAMES_DESC_TAG);
     if (vport->fc_flag & FC_FABRIC) {
         memcpy(desc->port_names.wwnn, &vport->fabric_nodename,
                sizeof(desc->port_names.wwnn));
 
         memcpy(desc->port_names.wwpn, &vport->fabric_portname,
                sizeof(desc->port_names.wwpn));
     } else {  /* Point to Point */
         memcpy(desc->port_names.wwnn, &ndlp->nlp_nodename,
                sizeof(desc->port_names.wwnn));
 
         memcpy(desc->port_names.wwpn, &ndlp->nlp_portname,
                sizeof(desc->port_names.wwpn));
     }
 
     desc->length = cpu_to_be32(sizeof(desc->port_names));
     return sizeof(struct fc_rdp_port_name_desc);
 }
 
 static void
 lpfc_els_rdp_cmpl(struct lpfc_hba *phba, struct lpfc_rdp_context *rdp_context,
         int status)
 {
     struct lpfc_nodelist *ndlp = rdp_context->ndlp;
     struct lpfc_vport *vport = ndlp->vport;
     struct lpfc_iocbq *elsiocb;
     struct ulp_bde64 *bpl;
     IOCB_t *icmd;
     union lpfc_wqe128 *wqe;
     uint8_t *pcmd;
     struct ls_rjt *stat;
     struct fc_rdp_res_frame *rdp_res;
     uint32_t cmdsize, len;
     uint16_t *flag_ptr;
     int rc;
     u32 ulp_context;
 
     if (status != SUCCESS)
         goto error;
 
     /* This will change once we know the true size of the RDP payload */
     cmdsize = sizeof(struct fc_rdp_res_frame);
 
     elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize,
                 lpfc_max_els_tries, rdp_context->ndlp,
                 rdp_context->ndlp->nlp_DID, ELS_CMD_ACC);
     if (!elsiocb)
         goto free_rdp_context;
 
     ulp_context = get_job_ulpcontext(phba, elsiocb);
     if (phba->sli_rev == LPFC_SLI_REV4) {
         wqe = &elsiocb->wqe;
         /* ox-id of the frame */
         bf_set(wqe_rcvoxid, &wqe->xmit_els_rsp.wqe_com,
                rdp_context->ox_id);
         bf_set(wqe_ctxt_tag, &wqe->xmit_els_rsp.wqe_com,
                rdp_context->rx_id);
     } else {
         icmd = &elsiocb->iocb;
         icmd->ulpContext = rdp_context->rx_id;
         icmd->unsli3.rcvsli3.ox_id = rdp_context->ox_id;
     }
 
     lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
             "2171 Xmit RDP response tag x%x xri x%x, "
             "did x%x, nlp_flag x%x, nlp_state x%x, rpi x%x",
             elsiocb->iotag, ulp_context,
             ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
             ndlp->nlp_rpi);
     rdp_res = (struct fc_rdp_res_frame *)elsiocb->cmd_dmabuf->virt;
     pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt;
     memset(pcmd, 0, sizeof(struct fc_rdp_res_frame));
     *((uint32_t *) (pcmd)) = ELS_CMD_ACC;
 
     /* Update Alarm and Warning */
     flag_ptr = (uint16_t *)(rdp_context->page_a2 + SSF_ALARM_FLAGS);
     phba->sfp_alarm |= *flag_ptr;
     flag_ptr = (uint16_t *)(rdp_context->page_a2 + SSF_WARNING_FLAGS);
     phba->sfp_warning |= *flag_ptr;
 
     /* For RDP payload */
     len = 8;
     len += lpfc_rdp_res_link_service((struct fc_rdp_link_service_desc *)
                      (len + pcmd), ELS_CMD_RDP);
 
     len += lpfc_rdp_res_sfp_desc((struct fc_rdp_sfp_desc *)(len + pcmd),
             rdp_context->page_a0, rdp_context->page_a2);
     len += lpfc_rdp_res_speed((struct fc_rdp_port_speed_desc *)(len + pcmd),
                   phba);
     len += lpfc_rdp_res_link_error((struct fc_rdp_link_error_status_desc *)
                        (len + pcmd), &rdp_context->link_stat);
     len += lpfc_rdp_res_diag_port_names((struct fc_rdp_port_name_desc *)
                          (len + pcmd), vport);
     len += lpfc_rdp_res_attach_port_names((struct fc_rdp_port_name_desc *)
                     (len + pcmd), vport, ndlp);
     len += lpfc_rdp_res_fec_desc((struct fc_fec_rdp_desc *)(len + pcmd),
             &rdp_context->link_stat);
     len += lpfc_rdp_res_bbc_desc((struct fc_rdp_bbc_desc *)(len + pcmd),
                      &rdp_context->link_stat, vport);
     len += lpfc_rdp_res_oed_temp_desc(phba,
                 (struct fc_rdp_oed_sfp_desc *)(len + pcmd),
                 rdp_context->page_a2);
     len += lpfc_rdp_res_oed_voltage_desc(phba,
                 (struct fc_rdp_oed_sfp_desc *)(len + pcmd),
                 rdp_context->page_a2);
     len += lpfc_rdp_res_oed_txbias_desc(phba,
                 (struct fc_rdp_oed_sfp_desc *)(len + pcmd),
                 rdp_context->page_a2);
     len += lpfc_rdp_res_oed_txpower_desc(phba,
                 (struct fc_rdp_oed_sfp_desc *)(len + pcmd),
                 rdp_context->page_a2);
     len += lpfc_rdp_res_oed_rxpower_desc(phba,
                 (struct fc_rdp_oed_sfp_desc *)(len + pcmd),
                 rdp_context->page_a2);
     len += lpfc_rdp_res_opd_desc((struct fc_rdp_opd_sfp_desc *)(len + pcmd),
                      rdp_context->page_a0, vport);
 
     rdp_res->length = cpu_to_be32(len - 8);
     elsiocb->cmd_cmpl = lpfc_cmpl_els_rsp;
 
     /* Now that we know the true size of the payload, update the BPL */
     bpl = (struct ulp_bde64 *)elsiocb->bpl_dmabuf->virt;
     bpl->tus.f.bdeSize = len;
     bpl->tus.f.bdeFlags = 0;
     bpl->tus.w = le32_to_cpu(bpl->tus.w);
 
     phba->fc_stat.elsXmitACC++;
     elsiocb->ndlp = lpfc_nlp_get(ndlp);
     if (!elsiocb->ndlp) {
         lpfc_els_free_iocb(phba, elsiocb);
         goto free_rdp_context;
     }
 
     rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
     if (rc == IOCB_ERROR) {
         lpfc_els_free_iocb(phba, elsiocb);
         lpfc_nlp_put(ndlp);
     }
 
     goto free_rdp_context;
 
 error:
     cmdsize = 2 * sizeof(uint32_t);
     elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, lpfc_max_els_tries,
             ndlp, ndlp->nlp_DID, ELS_CMD_LS_RJT);
     if (!elsiocb)
         goto free_rdp_context;
 
     if (phba->sli_rev == LPFC_SLI_REV4) {
         wqe = &elsiocb->wqe;
         /* ox-id of the frame */
         bf_set(wqe_rcvoxid, &wqe->xmit_els_rsp.wqe_com,
                rdp_context->ox_id);
         bf_set(wqe_ctxt_tag,
                &wqe->xmit_els_rsp.wqe_com,
                rdp_context->rx_id);
     } else {
         icmd = &elsiocb->iocb;
         icmd->ulpContext = rdp_context->rx_id;
         icmd->unsli3.rcvsli3.ox_id = rdp_context->ox_id;
     }
 
     pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt;
 
     *((uint32_t *) (pcmd)) = ELS_CMD_LS_RJT;
     stat = (struct ls_rjt *)(pcmd + sizeof(uint32_t));
     stat->un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
 
     phba->fc_stat.elsXmitLSRJT++;
     elsiocb->cmd_cmpl = lpfc_cmpl_els_rsp;
     elsiocb->ndlp = lpfc_nlp_get(ndlp);
     if (!elsiocb->ndlp) {
         lpfc_els_free_iocb(phba, elsiocb);
         goto free_rdp_context;
     }
 
     rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
     if (rc == IOCB_ERROR) {
         lpfc_els_free_iocb(phba, elsiocb);
         lpfc_nlp_put(ndlp);
     }
 
 free_rdp_context:
     /* This reference put is for the original unsolicited RDP. If the
      * prep failed, there is no reference to remove.
      */
     lpfc_nlp_put(ndlp);
     kfree(rdp_context);
 }
 
 static int
 lpfc_get_rdp_info(struct lpfc_hba *phba, struct lpfc_rdp_context *rdp_context)
 {
     LPFC_MBOXQ_t *mbox = NULL;
     int rc;
 
     mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
     if (!mbox) {
         lpfc_printf_log(phba, KERN_WARNING, LOG_MBOX | LOG_ELS,
                 "7105 failed to allocate mailbox memory");
         return 1;
     }
 
     if (lpfc_sli4_dump_page_a0(phba, mbox))
         goto rdp_fail;
     mbox->vport = rdp_context->ndlp->vport;
     mbox->mbox_cmpl = lpfc_mbx_cmpl_rdp_page_a0;
     mbox->ctx_ndlp = (struct lpfc_rdp_context *)rdp_context;
     rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
     if (rc == MBX_NOT_FINISHED) {
         lpfc_mbox_rsrc_cleanup(phba, mbox, MBOX_THD_UNLOCKED);
         return 1;
     }
 
     return 0;
 
 rdp_fail:
     mempool_free(mbox, phba->mbox_mem_pool);
     return 1;
 }
 
 /*
  * lpfc_els_rcv_rdp - Process an unsolicited RDP ELS.
  * @vport: pointer to a host virtual N_Port data structure.
  * @cmdiocb: pointer to lpfc command iocb data structure.
  * @ndlp: pointer to a node-list data structure.
  *
  * This routine processes an unsolicited RDP(Read Diagnostic Parameters)
  * IOCB. First, the payload of the unsolicited RDP is checked.
  * Then it will (1) send MBX_DUMP_MEMORY, Embedded DMP_LMSD sub command TYPE-3
  * for Page A0, (2) send MBX_DUMP_MEMORY, DMP_LMSD for Page A2,
  * (3) send MBX_READ_LNK_STAT to get link stat, (4) Call lpfc_els_rdp_cmpl
  * gather all data and send RDP response.
  *
  * Return code
  *   0 - Sent the acc response
  *   1 - Sent the reject response.
  */
 static int
 lpfc_els_rcv_rdp(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
         struct lpfc_nodelist *ndlp)
 {
     struct lpfc_hba *phba = vport->phba;
     struct lpfc_dmabuf *pcmd;
     uint8_t rjt_err, rjt_expl = LSEXP_NOTHING_MORE;
     struct fc_rdp_req_frame *rdp_req;
     struct lpfc_rdp_context *rdp_context;
     union lpfc_wqe128 *cmd = NULL;
     struct ls_rjt stat;
 
     if (phba->sli_rev < LPFC_SLI_REV4 ||
         bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) <
                         LPFC_SLI_INTF_IF_TYPE_2) {
         rjt_err = LSRJT_UNABLE_TPC;
         rjt_expl = LSEXP_REQ_UNSUPPORTED;
         goto error;
     }
 
     if (phba->sli_rev < LPFC_SLI_REV4 || (phba->hba_flag & HBA_FCOE_MODE)) {
         rjt_err = LSRJT_UNABLE_TPC;
         rjt_expl = LSEXP_REQ_UNSUPPORTED;
         goto error;
     }
 
     pcmd = cmdiocb->cmd_dmabuf;
     rdp_req = (struct fc_rdp_req_frame *) pcmd->virt;
 
     lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
              "2422 ELS RDP Request "
              "dec len %d tag x%x port_id %d len %d\n",
              be32_to_cpu(rdp_req->rdp_des_length),
              be32_to_cpu(rdp_req->nport_id_desc.tag),
              be32_to_cpu(rdp_req->nport_id_desc.nport_id),
              be32_to_cpu(rdp_req->nport_id_desc.length));
 
     if (sizeof(struct fc_rdp_nport_desc) !=
             be32_to_cpu(rdp_req->rdp_des_length))
         goto rjt_logerr;
     if (RDP_N_PORT_DESC_TAG != be32_to_cpu(rdp_req->nport_id_desc.tag))
         goto rjt_logerr;
     if (RDP_NPORT_ID_SIZE !=
             be32_to_cpu(rdp_req->nport_id_desc.length))
         goto rjt_logerr;
     rdp_context = kzalloc(sizeof(struct lpfc_rdp_context), GFP_KERNEL);
     if (!rdp_context) {
         rjt_err = LSRJT_UNABLE_TPC;
         goto error;
     }
 
     cmd = &cmdiocb->wqe;
     rdp_context->ndlp = lpfc_nlp_get(ndlp);
     if (!rdp_context->ndlp) {
         kfree(rdp_context);
         rjt_err = LSRJT_UNABLE_TPC;
         goto error;
     }
     rdp_context->ox_id = bf_get(wqe_rcvoxid,
                     &cmd->xmit_els_rsp.wqe_com);
     rdp_context->rx_id = bf_get(wqe_ctxt_tag,
                     &cmd->xmit_els_rsp.wqe_com);
     rdp_context->cmpl = lpfc_els_rdp_cmpl;
     if (lpfc_get_rdp_info(phba, rdp_context)) {
         lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_ELS,
                  "2423 Unable to send mailbox");
         kfree(rdp_context);
         rjt_err = LSRJT_UNABLE_TPC;
         lpfc_nlp_put(ndlp);
         goto error;
     }
 
     return 0;
 
 rjt_logerr:
     rjt_err = LSRJT_LOGICAL_ERR;
 
 error:
     memset(&stat, 0, sizeof(stat));
     stat.un.b.lsRjtRsnCode = rjt_err;
     stat.un.b.lsRjtRsnCodeExp = rjt_expl;
     lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
     return 1;
 }
 
 
 static void
 lpfc_els_lcb_rsp(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
 {
     MAILBOX_t *mb;
     IOCB_t *icmd;
     union lpfc_wqe128 *wqe;
     uint8_t *pcmd;
     struct lpfc_iocbq *elsiocb;
     struct lpfc_nodelist *ndlp;
     struct ls_rjt *stat;
     union lpfc_sli4_cfg_shdr *shdr;
     struct lpfc_lcb_context *lcb_context;
     struct fc_lcb_res_frame *lcb_res;
     uint32_t cmdsize, shdr_status, shdr_add_status;
     int rc;
 
     mb = &pmb->u.mb;
     lcb_context = (struct lpfc_lcb_context *)pmb->ctx_ndlp;
     ndlp = lcb_context->ndlp;
     pmb->ctx_ndlp = NULL;
     pmb->ctx_buf = NULL;
 
     shdr = (union lpfc_sli4_cfg_shdr *)
             &pmb->u.mqe.un.beacon_config.header.cfg_shdr;
     shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
     shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
 
     lpfc_printf_log(phba, KERN_INFO, LOG_MBOX,
                 "0194 SET_BEACON_CONFIG mailbox "
                 "completed with status x%x add_status x%x,"
                 " mbx status x%x\n",
                 shdr_status, shdr_add_status, mb->mbxStatus);
 
     if ((mb->mbxStatus != MBX_SUCCESS) || shdr_status ||
         (shdr_add_status == ADD_STATUS_OPERATION_ALREADY_ACTIVE) ||
         (shdr_add_status == ADD_STATUS_INVALID_REQUEST)) {
         mempool_free(pmb, phba->mbox_mem_pool);
         goto error;
     }
 
     mempool_free(pmb, phba->mbox_mem_pool);
     cmdsize = sizeof(struct fc_lcb_res_frame);
     elsiocb = lpfc_prep_els_iocb(phba->pport, 0, cmdsize,
             lpfc_max_els_tries, ndlp,
             ndlp->nlp_DID, ELS_CMD_ACC);
 
     /* Decrement the ndlp reference count from previous mbox command */
     lpfc_nlp_put(ndlp);
 
     if (!elsiocb)
         goto free_lcb_context;
 
     lcb_res = (struct fc_lcb_res_frame *)elsiocb->cmd_dmabuf->virt;
 
     memset(lcb_res, 0, sizeof(struct fc_lcb_res_frame));
 
     if (phba->sli_rev == LPFC_SLI_REV4) {
         wqe = &elsiocb->wqe;
         bf_set(wqe_ctxt_tag, &wqe->generic.wqe_com, lcb_context->rx_id);
         bf_set(wqe_rcvoxid, &wqe->xmit_els_rsp.wqe_com,
                lcb_context->ox_id);
     } else {
         icmd = &elsiocb->iocb;
         icmd->ulpContext = lcb_context->rx_id;
         icmd->unsli3.rcvsli3.ox_id = lcb_context->ox_id;
     }
 
     pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt;
     *((uint32_t *)(pcmd)) = ELS_CMD_ACC;
     lcb_res->lcb_sub_command = lcb_context->sub_command;
     lcb_res->lcb_type = lcb_context->type;
     lcb_res->capability = lcb_context->capability;
     lcb_res->lcb_frequency = lcb_context->frequency;
     lcb_res->lcb_duration = lcb_context->duration;
     elsiocb->cmd_cmpl = lpfc_cmpl_els_rsp;
     phba->fc_stat.elsXmitACC++;
 
     elsiocb->ndlp = lpfc_nlp_get(ndlp);
     if (!elsiocb->ndlp) {
         lpfc_els_free_iocb(phba, elsiocb);
         goto out;
     }
 
     rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
     if (rc == IOCB_ERROR) {
         lpfc_els_free_iocb(phba, elsiocb);
         lpfc_nlp_put(ndlp);
     }
  out:
     kfree(lcb_context);
     return;
 
 error:
     cmdsize = sizeof(struct fc_lcb_res_frame);
     elsiocb = lpfc_prep_els_iocb(phba->pport, 0, cmdsize,
                      lpfc_max_els_tries, ndlp,
                      ndlp->nlp_DID, ELS_CMD_LS_RJT);
     lpfc_nlp_put(ndlp);
     if (!elsiocb)
         goto free_lcb_context;
 
     if (phba->sli_rev == LPFC_SLI_REV4) {
         wqe = &elsiocb->wqe;
         bf_set(wqe_ctxt_tag, &wqe->generic.wqe_com, lcb_context->rx_id);
         bf_set(wqe_rcvoxid, &wqe->xmit_els_rsp.wqe_com,
                lcb_context->ox_id);
     } else {
         icmd = &elsiocb->iocb;
         icmd->ulpContext = lcb_context->rx_id;
         icmd->unsli3.rcvsli3.ox_id = lcb_context->ox_id;
     }
 
     pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt;
 
     *((uint32_t *)(pcmd)) = ELS_CMD_LS_RJT;
     stat = (struct ls_rjt *)(pcmd + sizeof(uint32_t));
     stat->un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
 
     if (shdr_add_status == ADD_STATUS_OPERATION_ALREADY_ACTIVE)
         stat->un.b.lsRjtRsnCodeExp = LSEXP_CMD_IN_PROGRESS;
 
     elsiocb->cmd_cmpl = lpfc_cmpl_els_rsp;
     phba->fc_stat.elsXmitLSRJT++;
     elsiocb->ndlp = lpfc_nlp_get(ndlp);
     if (!elsiocb->ndlp) {
         lpfc_els_free_iocb(phba, elsiocb);
         goto free_lcb_context;
     }
 
     rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
     if (rc == IOCB_ERROR) {
         lpfc_els_free_iocb(phba, elsiocb);
         lpfc_nlp_put(ndlp);
     }
 free_lcb_context:
     kfree(lcb_context);
 }
 
 static int
 lpfc_sli4_set_beacon(struct lpfc_vport *vport,
              struct lpfc_lcb_context *lcb_context,
              uint32_t beacon_state)
 {
     struct lpfc_hba *phba = vport->phba;
     union lpfc_sli4_cfg_shdr *cfg_shdr;
     LPFC_MBOXQ_t *mbox = NULL;
     uint32_t len;
     int rc;
 
     mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
     if (!mbox)
         return 1;
 
     cfg_shdr = &mbox->u.mqe.un.sli4_config.header.cfg_shdr;
     len = sizeof(struct lpfc_mbx_set_beacon_config) -
         sizeof(struct lpfc_sli4_cfg_mhdr);
     lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_COMMON,
              LPFC_MBOX_OPCODE_SET_BEACON_CONFIG, len,
              LPFC_SLI4_MBX_EMBED);
     mbox->ctx_ndlp = (void *)lcb_context;
     mbox->vport = phba->pport;
     mbox->mbox_cmpl = lpfc_els_lcb_rsp;
     bf_set(lpfc_mbx_set_beacon_port_num, &mbox->u.mqe.un.beacon_config,
            phba->sli4_hba.physical_port);
     bf_set(lpfc_mbx_set_beacon_state, &mbox->u.mqe.un.beacon_config,
            beacon_state);
     mbox->u.mqe.un.beacon_config.word5 = 0;     /* Reserved */
 
     /*
      *  Check bv1s bit before issuing the mailbox
      *  if bv1s == 1, LCB V1 supported
      *  else, LCB V0 supported
      */
 
     if (phba->sli4_hba.pc_sli4_params.bv1s) {
         /* COMMON_SET_BEACON_CONFIG_V1 */
         cfg_shdr->request.word9 = BEACON_VERSION_V1;
         lcb_context->capability |= LCB_CAPABILITY_DURATION;
         bf_set(lpfc_mbx_set_beacon_port_type,
                &mbox->u.mqe.un.beacon_config, 0);
         bf_set(lpfc_mbx_set_beacon_duration_v1,
                &mbox->u.mqe.un.beacon_config,
                be16_to_cpu(lcb_context->duration));
     } else {
         /* COMMON_SET_BEACON_CONFIG_V0 */
         if (be16_to_cpu(lcb_context->duration) != 0) {
             mempool_free(mbox, phba->mbox_mem_pool);
             return 1;
         }
         cfg_shdr->request.word9 = BEACON_VERSION_V0;
         lcb_context->capability &=  ~(LCB_CAPABILITY_DURATION);
         bf_set(lpfc_mbx_set_beacon_state,
                &mbox->u.mqe.un.beacon_config, beacon_state);
         bf_set(lpfc_mbx_set_beacon_port_type,
                &mbox->u.mqe.un.beacon_config, 1);
         bf_set(lpfc_mbx_set_beacon_duration,
                &mbox->u.mqe.un.beacon_config,
                be16_to_cpu(lcb_context->duration));
     }
 
     rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
     if (rc == MBX_NOT_FINISHED) {
         mempool_free(mbox, phba->mbox_mem_pool);
         return 1;
     }
 
     return 0;
 }
 
 
 /**
  * lpfc_els_rcv_lcb - Process an unsolicited LCB
  * @vport: pointer to a host virtual N_Port data structure.
  * @cmdiocb: pointer to lpfc command iocb data structure.
  * @ndlp: pointer to a node-list data structure.
  *
  * This routine processes an unsolicited LCB(LINK CABLE BEACON) IOCB.
  * First, the payload of the unsolicited LCB is checked.
  * Then based on Subcommand beacon will either turn on or off.
  *
  * Return code
  * 0 - Sent the acc response
  * 1 - Sent the reject response.
  **/
 static int
 lpfc_els_rcv_lcb(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
          struct lpfc_nodelist *ndlp)
 {
     struct lpfc_hba *phba = vport->phba;
     struct lpfc_dmabuf *pcmd;
     uint8_t *lp;
     struct fc_lcb_request_frame *beacon;
     struct lpfc_lcb_context *lcb_context;
     u8 state, rjt_err = 0;
     struct ls_rjt stat;
 
     pcmd = cmdiocb->cmd_dmabuf;
     lp = (uint8_t *)pcmd->virt;
     beacon = (struct fc_lcb_request_frame *)pcmd->virt;
 
     lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
             "0192 ELS LCB Data x%x x%x x%x x%x sub x%x "
             "type x%x frequency %x duration x%x\n",
             lp[0], lp[1], lp[2],
             beacon->lcb_command,
             beacon->lcb_sub_command,
             beacon->lcb_type,
             beacon->lcb_frequency,
             be16_to_cpu(beacon->lcb_duration));
 
     if (beacon->lcb_sub_command != LPFC_LCB_ON &&
         beacon->lcb_sub_command != LPFC_LCB_OFF) {
         rjt_err = LSRJT_CMD_UNSUPPORTED;
         goto rjt;
     }
 
     if (phba->sli_rev < LPFC_SLI_REV4  ||
         phba->hba_flag & HBA_FCOE_MODE ||
         (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) <
         LPFC_SLI_INTF_IF_TYPE_2)) {
         rjt_err = LSRJT_CMD_UNSUPPORTED;
         goto rjt;
     }
 
     lcb_context = kmalloc(sizeof(*lcb_context), GFP_KERNEL);
     if (!lcb_context) {
         rjt_err = LSRJT_UNABLE_TPC;
         goto rjt;
     }
 
     state = (beacon->lcb_sub_command == LPFC_LCB_ON) ? 1 : 0;
     lcb_context->sub_command = beacon->lcb_sub_command;
     lcb_context->capability = 0;
     lcb_context->type = beacon->lcb_type;
     lcb_context->frequency = beacon->lcb_frequency;
     lcb_context->duration = beacon->lcb_duration;
     lcb_context->ox_id = get_job_rcvoxid(phba, cmdiocb);
     lcb_context->rx_id = get_job_ulpcontext(phba, cmdiocb);
     lcb_context->ndlp = lpfc_nlp_get(ndlp);
     if (!lcb_context->ndlp) {
         rjt_err = LSRJT_UNABLE_TPC;
         goto rjt_free;
     }
 
     if (lpfc_sli4_set_beacon(vport, lcb_context, state)) {
         lpfc_printf_vlog(ndlp->vport, KERN_ERR, LOG_TRACE_EVENT,
                  "0193 failed to send mail box");
         lpfc_nlp_put(ndlp);
         rjt_err = LSRJT_UNABLE_TPC;
         goto rjt_free;
     }
     return 0;
 
 rjt_free:
     kfree(lcb_context);
 rjt:
     memset(&stat, 0, sizeof(stat));
     stat.un.b.lsRjtRsnCode = rjt_err;
     lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
     return 1;
 }
 
 
 /**
  * lpfc_els_flush_rscn - Clean up any rscn activities with a vport
  * @vport: pointer to a host virtual N_Port data structure.
  *
  * This routine cleans up any Registration State Change Notification
  * (RSCN) activity with a @vport. Note that the fc_rscn_flush flag of the
  * @vport together with the host_lock is used to prevent multiple thread
  * trying to access the RSCN array on a same @vport at the same time.
  **/
 void
 lpfc_els_flush_rscn(struct lpfc_vport *vport)
 {
     struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
     struct lpfc_hba  *phba = vport->phba;
     int i;
 
     spin_lock_irq(shost->host_lock);
     if (vport->fc_rscn_flush) {
         /* Another thread is walking fc_rscn_id_list on this vport */
         spin_unlock_irq(shost->host_lock);
         return;
     }
     /* Indicate we are walking lpfc_els_flush_rscn on this vport */
     vport->fc_rscn_flush = 1;
     spin_unlock_irq(shost->host_lock);
 
     for (i = 0; i < vport->fc_rscn_id_cnt; i++) {
         lpfc_in_buf_free(phba, vport->fc_rscn_id_list[i]);
         vport->fc_rscn_id_list[i] = NULL;
     }
     spin_lock_irq(shost->host_lock);
     vport->fc_rscn_id_cnt = 0;
     vport->fc_flag &= ~(FC_RSCN_MODE | FC_RSCN_DISCOVERY);
     spin_unlock_irq(shost->host_lock);
     lpfc_can_disctmo(vport);
     /* Indicate we are done walking this fc_rscn_id_list */
     vport->fc_rscn_flush = 0;
 }
 
 /**
  * lpfc_rscn_payload_check - Check whether there is a pending rscn to a did
  * @vport: pointer to a host virtual N_Port data structure.
  * @did: remote destination port identifier.
  *
  * This routine checks whether there is any pending Registration State
  * Configuration Notification (RSCN) to a @did on @vport.
  *
  * Return code
  *   None zero - The @did matched with a pending rscn
  *   0 - not able to match @did with a pending rscn
  **/
 int
 lpfc_rscn_payload_check(struct lpfc_vport *vport, uint32_t did)
 {
     D_ID ns_did;
     D_ID rscn_did;
     uint32_t *lp;
     uint32_t payload_len, i;
     struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
 
     ns_did.un.word = did;
 
     /* Never match fabric nodes for RSCNs */
     if ((did & Fabric_DID_MASK) == Fabric_DID_MASK)
         return 0;
 
     /* If we are doing a FULL RSCN rediscovery, match everything */
     if (vport->fc_flag & FC_RSCN_DISCOVERY)
         return did;
 
     spin_lock_irq(shost->host_lock);
     if (vport->fc_rscn_flush) {
         /* Another thread is walking fc_rscn_id_list on this vport */
         spin_unlock_irq(shost->host_lock);
         return 0;
     }
     /* Indicate we are walking fc_rscn_id_list on this vport */
     vport->fc_rscn_flush = 1;
     spin_unlock_irq(shost->host_lock);
     for (i = 0; i < vport->fc_rscn_id_cnt; i++) {
         lp = vport->fc_rscn_id_list[i]->virt;
         payload_len = be32_to_cpu(*lp++ & ~ELS_CMD_MASK);
         payload_len -= sizeof(uint32_t);    /* take off word 0 */
         while (payload_len) {
             rscn_did.un.word = be32_to_cpu(*lp++);
             payload_len -= sizeof(uint32_t);
             switch (rscn_did.un.b.resv & RSCN_ADDRESS_FORMAT_MASK) {
             case RSCN_ADDRESS_FORMAT_PORT:
                 if ((ns_did.un.b.domain == rscn_did.un.b.domain)
                     && (ns_did.un.b.area == rscn_did.un.b.area)
                     && (ns_did.un.b.id == rscn_did.un.b.id))
                     goto return_did_out;
                 break;
             case RSCN_ADDRESS_FORMAT_AREA:
                 if ((ns_did.un.b.domain == rscn_did.un.b.domain)
                     && (ns_did.un.b.area == rscn_did.un.b.area))
                     goto return_did_out;
                 break;
             case RSCN_ADDRESS_FORMAT_DOMAIN:
                 if (ns_did.un.b.domain == rscn_did.un.b.domain)
                     goto return_did_out;
                 break;
             case RSCN_ADDRESS_FORMAT_FABRIC:
                 goto return_did_out;
             }
         }
     }
     /* Indicate we are done with walking fc_rscn_id_list on this vport */
     vport->fc_rscn_flush = 0;
     return 0;
 return_did_out:
     /* Indicate we are done with walking fc_rscn_id_list on this vport */
     vport->fc_rscn_flush = 0;
     return did;
 }
 
 /**
  * lpfc_rscn_recovery_check - Send recovery event to vport nodes matching rscn
  * @vport: pointer to a host virtual N_Port data structure.
  *
  * This routine sends recovery (NLP_EVT_DEVICE_RECOVERY) event to the
  * state machine for a @vport's nodes that are with pending RSCN (Registration
  * State Change Notification).
  *
  * Return code
  *   0 - Successful (currently alway return 0)
  **/
 static int
 lpfc_rscn_recovery_check(struct lpfc_vport *vport)
 {
     struct lpfc_nodelist *ndlp = NULL, *n;
 
     /* Move all affected nodes by pending RSCNs to NPR state. */
     list_for_each_entry_safe(ndlp, n, &vport->fc_nodes, nlp_listp) {
         if ((ndlp->nlp_state == NLP_STE_UNUSED_NODE) ||
             !lpfc_rscn_payload_check(vport, ndlp->nlp_DID))
             continue;
 
         /* NVME Target mode does not do RSCN Recovery. */
         if (vport->phba->nvmet_support)
             continue;
 
         /* If we are in the process of doing discovery on this
          * NPort, let it continue on its own.
          */
         switch (ndlp->nlp_state) {
         case  NLP_STE_PLOGI_ISSUE:
         case  NLP_STE_ADISC_ISSUE:
         case  NLP_STE_REG_LOGIN_ISSUE:
         case  NLP_STE_PRLI_ISSUE:
         case  NLP_STE_LOGO_ISSUE:
             continue;
         }
 
         lpfc_disc_state_machine(vport, ndlp, NULL,
                     NLP_EVT_DEVICE_RECOVERY);
         lpfc_cancel_retry_delay_tmo(vport, ndlp);
     }
     return 0;
 }
 
 /**
  * lpfc_send_rscn_event - Send an RSCN event to management application
  * @vport: pointer to a host virtual N_Port data structure.
  * @cmdiocb: pointer to lpfc command iocb data structure.
  *
  * lpfc_send_rscn_event sends an RSCN netlink event to management
  * applications.
  */
 static void
 lpfc_send_rscn_event(struct lpfc_vport *vport,
         struct lpfc_iocbq *cmdiocb)
 {
     struct lpfc_dmabuf *pcmd;
     struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
     uint32_t *payload_ptr;
     uint32_t payload_len;
     struct lpfc_rscn_event_header *rscn_event_data;
 
     pcmd = cmdiocb->cmd_dmabuf;
     payload_ptr = (uint32_t *) pcmd->virt;
     payload_len = be32_to_cpu(*payload_ptr & ~ELS_CMD_MASK);
 
     rscn_event_data = kmalloc(sizeof(struct lpfc_rscn_event_header) +
         payload_len, GFP_KERNEL);
     if (!rscn_event_data) {
         lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
             "0147 Failed to allocate memory for RSCN event\n");
         return;
     }
     rscn_event_data->event_type = FC_REG_RSCN_EVENT;
     rscn_event_data->payload_length = payload_len;
     memcpy(rscn_event_data->rscn_payload, payload_ptr,
         payload_len);
 
     fc_host_post_vendor_event(shost,
         fc_get_event_number(),
         sizeof(struct lpfc_rscn_event_header) + payload_len,
         (char *)rscn_event_data,
         LPFC_NL_VENDOR_ID);
 
     kfree(rscn_event_data);
 }
 
 /**
  * lpfc_els_rcv_rscn - Process an unsolicited rscn iocb
  * @vport: pointer to a host virtual N_Port data structure.
  * @cmdiocb: pointer to lpfc command iocb data structure.
  * @ndlp: pointer to a node-list data structure.
  *
  * This routine processes an unsolicited RSCN (Registration State Change
  * Notification) IOCB. First, the payload of the unsolicited RSCN is walked
  * to invoke fc_host_post_event() routine to the FC transport layer. If the
  * discover state machine is about to begin discovery, it just accepts the
  * RSCN and the discovery process will satisfy the RSCN. If this RSCN only
  * contains N_Port IDs for other vports on this HBA, it just accepts the
  * RSCN and ignore processing it. If the state machine is in the recovery
  * state, the fc_rscn_id_list of this @vport is walked and the
  * lpfc_rscn_recovery_check() routine is invoked to send recovery event for
  * all nodes that match RSCN payload. Otherwise, the lpfc_els_handle_rscn()
  * routine is invoked to handle the RSCN event.
  *
  * Return code
  *   0 - Just sent the acc response
  *   1 - Sent the acc response and waited for name server completion
  **/
 static int
 lpfc_els_rcv_rscn(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
           struct lpfc_nodelist *ndlp)
 {
     struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
     struct lpfc_hba  *phba = vport->phba;
     struct lpfc_dmabuf *pcmd;
     uint32_t *lp, *datap;
     uint32_t payload_len, length, nportid, *cmd;
     int rscn_cnt;
     int rscn_id = 0, hba_id = 0;
     int i, tmo;
 
     pcmd = cmdiocb->cmd_dmabuf;
     lp = (uint32_t *) pcmd->virt;
 
     payload_len = be32_to_cpu(*lp++ & ~ELS_CMD_MASK);
     payload_len -= sizeof(uint32_t);    /* take off word 0 */
     /* RSCN received */
     lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
              "0214 RSCN received Data: x%x x%x x%x x%x\n",
              vport->fc_flag, payload_len, *lp,
              vport->fc_rscn_id_cnt);
 
     /* Send an RSCN event to the management application */
     lpfc_send_rscn_event(vport, cmdiocb);
 
     for (i = 0; i < payload_len/sizeof(uint32_t); i++)
         fc_host_post_event(shost, fc_get_event_number(),
             FCH_EVT_RSCN, lp[i]);
 
     /* Check if RSCN is coming from a direct-connected remote NPort */
     if (vport->fc_flag & FC_PT2PT) {
         /* If so, just ACC it, no other action needed for now */
         lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
                  "2024 pt2pt RSCN %08x Data: x%x x%x\n",
                  *lp, vport->fc_flag, payload_len);
         lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
 
         /* Check to see if we need to NVME rescan this target
          * remoteport.
          */
         if (ndlp->nlp_fc4_type & NLP_FC4_NVME &&
             ndlp->nlp_type & (NLP_NVME_TARGET | NLP_NVME_DISCOVERY))
             lpfc_nvme_rescan_port(vport, ndlp);
         return 0;
     }
 
     /* If we are about to begin discovery, just ACC the RSCN.
      * Discovery processing will satisfy it.
      */
     if (vport->port_state <= LPFC_NS_QRY) {
         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
             "RCV RSCN ignore: did:x%x/ste:x%x flg:x%x",
             ndlp->nlp_DID, vport->port_state, ndlp->nlp_flag);
 
         lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
         return 0;
     }
 
     /* If this RSCN just contains NPortIDs for other vports on this HBA,
      * just ACC and ignore it.
      */
     if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
         !(vport->cfg_peer_port_login)) {
         i = payload_len;
         datap = lp;
         while (i > 0) {
             nportid = *datap++;
             nportid = ((be32_to_cpu(nportid)) & Mask_DID);
             i -= sizeof(uint32_t);
             rscn_id++;
             if (lpfc_find_vport_by_did(phba, nportid))
                 hba_id++;
         }
         if (rscn_id == hba_id) {
             /* ALL NPortIDs in RSCN are on HBA */
             lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
                      "0219 Ignore RSCN "
                      "Data: x%x x%x x%x x%x\n",
                      vport->fc_flag, payload_len,
                      *lp, vport->fc_rscn_id_cnt);
             lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
                 "RCV RSCN vport:  did:x%x/ste:x%x flg:x%x",
                 ndlp->nlp_DID, vport->port_state,
                 ndlp->nlp_flag);
 
             lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb,
                 ndlp, NULL);
             /* Restart disctmo if its already running */
             if (vport->fc_flag & FC_DISC_TMO) {
                 tmo = ((phba->fc_ratov * 3) + 3);
                 mod_timer(&vport->fc_disctmo,
                       jiffies +
                       msecs_to_jiffies(1000 * tmo));
             }
             return 0;
         }
     }
 
     spin_lock_irq(shost->host_lock);
     if (vport->fc_rscn_flush) {
         /* Another thread is walking fc_rscn_id_list on this vport */
         vport->fc_flag |= FC_RSCN_DISCOVERY;
         spin_unlock_irq(shost->host_lock);
         /* Send back ACC */
         lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
         return 0;
     }
     /* Indicate we are walking fc_rscn_id_list on this vport */
     vport->fc_rscn_flush = 1;
     spin_unlock_irq(shost->host_lock);
     /* Get the array count after successfully have the token */
     rscn_cnt = vport->fc_rscn_id_cnt;
     /* If we are already processing an RSCN, save the received
      * RSCN payload buffer, cmdiocb->cmd_dmabuf to process later.
      */
     if (vport->fc_flag & (FC_RSCN_MODE | FC_NDISC_ACTIVE)) {
         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
             "RCV RSCN defer:  did:x%x/ste:x%x flg:x%x",
             ndlp->nlp_DID, vport->port_state, ndlp->nlp_flag);
 
         spin_lock_irq(shost->host_lock);
         vport->fc_flag |= FC_RSCN_DEFERRED;
 
         /* Restart disctmo if its already running */
         if (vport->fc_flag & FC_DISC_TMO) {
             tmo = ((phba->fc_ratov * 3) + 3);
             mod_timer(&vport->fc_disctmo,
                   jiffies + msecs_to_jiffies(1000 * tmo));
         }
         if ((rscn_cnt < FC_MAX_HOLD_RSCN) &&
             !(vport->fc_flag & FC_RSCN_DISCOVERY)) {
             vport->fc_flag |= FC_RSCN_MODE;
             spin_unlock_irq(shost->host_lock);
             if (rscn_cnt) {
                 cmd = vport->fc_rscn_id_list[rscn_cnt-1]->virt;
                 length = be32_to_cpu(*cmd & ~ELS_CMD_MASK);
             }
             if ((rscn_cnt) &&
                 (payload_len + length <= LPFC_BPL_SIZE)) {
                 *cmd &= ELS_CMD_MASK;
                 *cmd |= cpu_to_be32(payload_len + length);
                 memcpy(((uint8_t *)cmd) + length, lp,
                        payload_len);
             } else {
                 vport->fc_rscn_id_list[rscn_cnt] = pcmd;
                 vport->fc_rscn_id_cnt++;
                 /* If we zero, cmdiocb->cmd_dmabuf, the calling
                  * routine will not try to free it.
                  */
                 cmdiocb->cmd_dmabuf = NULL;
             }
             /* Deferred RSCN */
             lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
                      "0235 Deferred RSCN "
                      "Data: x%x x%x x%x\n",
                      vport->fc_rscn_id_cnt, vport->fc_flag,
                      vport->port_state);
         } else {
             vport->fc_flag |= FC_RSCN_DISCOVERY;
             spin_unlock_irq(shost->host_lock);
             /* ReDiscovery RSCN */
             lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
                      "0234 ReDiscovery RSCN "
                      "Data: x%x x%x x%x\n",
                      vport->fc_rscn_id_cnt, vport->fc_flag,
                      vport->port_state);
         }
         /* Indicate we are done walking fc_rscn_id_list on this vport */
         vport->fc_rscn_flush = 0;
         /* Send back ACC */
         lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
         /* send RECOVERY event for ALL nodes that match RSCN payload */
         lpfc_rscn_recovery_check(vport);
         return 0;
     }
     lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
         "RCV RSCN:        did:x%x/ste:x%x flg:x%x",
         ndlp->nlp_DID, vport->port_state, ndlp->nlp_flag);
 
     spin_lock_irq(shost->host_lock);
     vport->fc_flag |= FC_RSCN_MODE;
     spin_unlock_irq(shost->host_lock);
     vport->fc_rscn_id_list[vport->fc_rscn_id_cnt++] = pcmd;
     /* Indicate we are done walking fc_rscn_id_list on this vport */
     vport->fc_rscn_flush = 0;
     /*
      * If we zero, cmdiocb->cmd_dmabuf, the calling routine will
      * not try to free it.
      */
     cmdiocb->cmd_dmabuf = NULL;
     lpfc_set_disctmo(vport);
     /* Send back ACC */
     lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
     /* send RECOVERY event for ALL nodes that match RSCN payload */
     lpfc_rscn_recovery_check(vport);
     return lpfc_els_handle_rscn(vport);
 }
 
 /**
  * lpfc_els_handle_rscn - Handle rscn for a vport
  * @vport: pointer to a host virtual N_Port data structure.
  *
  * This routine handles the Registration State Configuration Notification
  * (RSCN) for a @vport. If login to NameServer does not exist, a new ndlp shall
  * be created and a Port Login (PLOGI) to the NameServer is issued. Otherwise,
  * if the ndlp to NameServer exists, a Common Transport (CT) command to the
  * NameServer shall be issued. If CT command to the NameServer fails to be
  * issued, the lpfc_els_flush_rscn() routine shall be invoked to clean up any
  * RSCN activities with the @vport.
  *
  * Return code
  *   0 - Cleaned up rscn on the @vport
  *   1 - Wait for plogi to name server before proceed
  **/
 int
 lpfc_els_handle_rscn(struct lpfc_vport *vport)
 {
     struct lpfc_nodelist *ndlp;
     struct lpfc_hba  *phba = vport->phba;
 
     /* Ignore RSCN if the port is being torn down. */
     if (vport->load_flag & FC_UNLOADING) {
         lpfc_els_flush_rscn(vport);
         return 0;
     }
 
     /* Start timer for RSCN processing */
     lpfc_set_disctmo(vport);
 
     /* RSCN processed */
     lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
              "0215 RSCN processed Data: x%x x%x x%x x%x x%x x%x\n",
              vport->fc_flag, 0, vport->fc_rscn_id_cnt,
              vport->port_state, vport->num_disc_nodes,
              vport->gidft_inp);
 
     /* To process RSCN, first compare RSCN data with NameServer */
     vport->fc_ns_retry = 0;
     vport->num_disc_nodes = 0;
 
     ndlp = lpfc_findnode_did(vport, NameServer_DID);
     if (ndlp && ndlp->nlp_state == NLP_STE_UNMAPPED_NODE) {
         /* Good ndlp, issue CT Request to NameServer.  Need to
          * know how many gidfts were issued.  If none, then just
          * flush the RSCN.  Otherwise, the outstanding requests
          * need to complete.
          */
         if (phba->cfg_ns_query == LPFC_NS_QUERY_GID_FT) {
             if (lpfc_issue_gidft(vport) > 0)
                 return 1;
         } else if (phba->cfg_ns_query == LPFC_NS_QUERY_GID_PT) {
             if (lpfc_issue_gidpt(vport) > 0)
                 return 1;
         } else {
             return 1;
         }
     } else {
         /* Nameserver login in question.  Revalidate. */
         if (ndlp) {
             ndlp->nlp_prev_state = NLP_STE_UNUSED_NODE;
             lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
         } else {
             ndlp = lpfc_nlp_init(vport, NameServer_DID);
             if (!ndlp) {
                 lpfc_els_flush_rscn(vport);
                 return 0;
             }
             ndlp->nlp_prev_state = ndlp->nlp_state;
             lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
         }
         ndlp->nlp_type |= NLP_FABRIC;
         lpfc_issue_els_plogi(vport, NameServer_DID, 0);
         /* Wait for NameServer login cmpl before we can
          * continue
          */
         return 1;
     }
 
     lpfc_els_flush_rscn(vport);
     return 0;
 }
 
 /**
  * lpfc_els_rcv_flogi - Process an unsolicited flogi iocb
  * @vport: pointer to a host virtual N_Port data structure.
  * @cmdiocb: pointer to lpfc command iocb data structure.
  * @ndlp: pointer to a node-list data structure.
  *
  * This routine processes Fabric Login (FLOGI) IOCB received as an ELS
  * unsolicited event. An unsolicited FLOGI can be received in a point-to-
  * point topology. As an unsolicited FLOGI should not be received in a loop
  * mode, any unsolicited FLOGI received in loop mode shall be ignored. The
  * lpfc_check_sparm() routine is invoked to check the parameters in the
  * unsolicited FLOGI. If parameters validation failed, the routine
  * lpfc_els_rsp_reject() shall be called with reject reason code set to
  * LSEXP_SPARM_OPTIONS to reject the FLOGI. Otherwise, the Port WWN in the
  * FLOGI shall be compared with the Port WWN of the @vport to determine who
  * will initiate PLOGI. The higher lexicographical value party shall has
  * higher priority (as the winning port) and will initiate PLOGI and
  * communicate Port_IDs (Addresses) for both nodes in PLOGI. The result
  * of this will be marked in the @vport fc_flag field with FC_PT2PT_PLOGI
  * and then the lpfc_els_rsp_acc() routine is invoked to accept the FLOGI.
  *
  * Return code
  *   0 - Successfully processed the unsolicited flogi
  *   1 - Failed to process the unsolicited flogi
  **/
 static int
 lpfc_els_rcv_flogi(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
            struct lpfc_nodelist *ndlp)
 {
     struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
     struct lpfc_hba  *phba = vport->phba;
     struct lpfc_dmabuf *pcmd = cmdiocb->cmd_dmabuf;
     uint32_t *lp = (uint32_t *) pcmd->virt;
     union lpfc_wqe128 *wqe = &cmdiocb->wqe;
     struct serv_parm *sp;
     LPFC_MBOXQ_t *mbox;
     uint32_t cmd, did;
     int rc;
     uint32_t fc_flag = 0;
     uint32_t port_state = 0;
 
     /* Clear external loopback plug detected flag */
     phba->link_flag &= ~LS_EXTERNAL_LOOPBACK;
 
     cmd = *lp++;
     sp = (struct serv_parm *) lp;
 
     /* FLOGI received */
 
     lpfc_set_disctmo(vport);
 
     if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
         /* We should never receive a FLOGI in loop mode, ignore it */
         did =  bf_get(wqe_els_did, &wqe->xmit_els_rsp.wqe_dest);
 
         /* An FLOGI ELS command <elsCmd> was received from DID <did> in
            Loop Mode */
         lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
                  "0113 An FLOGI ELS command x%x was "
                  "received from DID x%x in Loop Mode\n",
                  cmd, did);
         return 1;
     }
 
     (void) lpfc_check_sparm(vport, ndlp, sp, CLASS3, 1);
 
     /*
      * If our portname is greater than the remote portname,
      * then we initiate Nport login.
      */
 
     rc = memcmp(&vport->fc_portname, &sp->portName,
             sizeof(struct lpfc_name));
 
     if (!rc) {
         if (phba->sli_rev < LPFC_SLI_REV4) {
             mbox = mempool_alloc(phba->mbox_mem_pool,
                          GFP_KERNEL);
             if (!mbox)
                 return 1;
             lpfc_linkdown(phba);
             lpfc_init_link(phba, mbox,
                        phba->cfg_topology,
                        phba->cfg_link_speed);
             mbox->u.mb.un.varInitLnk.lipsr_AL_PA = 0;
             mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
             mbox->vport = vport;
             rc = lpfc_sli_issue_mbox(phba, mbox,
                          MBX_NOWAIT);
             lpfc_set_loopback_flag(phba);
             if (rc == MBX_NOT_FINISHED)
                 mempool_free(mbox, phba->mbox_mem_pool);
             return 1;
         }
 
         /* External loopback plug insertion detected */
         phba->link_flag |= LS_EXTERNAL_LOOPBACK;
 
         lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS | LOG_LIBDFC,
                  "1119 External Loopback plug detected\n");
 
         /* abort the flogi coming back to ourselves
          * due to external loopback on the port.
          */
         lpfc_els_abort_flogi(phba);
         return 0;
 
     } else if (rc > 0) {    /* greater than */
         spin_lock_irq(shost->host_lock);
         vport->fc_flag |= FC_PT2PT_PLOGI;
         spin_unlock_irq(shost->host_lock);
 
         /* If we have the high WWPN we can assign our own
          * myDID; otherwise, we have to WAIT for a PLOGI
          * from the remote NPort to find out what it
          * will be.
          */
         vport->fc_myDID = PT2PT_LocalID;
     } else {
         vport->fc_myDID = PT2PT_RemoteID;
     }
 
     /*
      * The vport state should go to LPFC_FLOGI only
      * AFTER we issue a FLOGI, not receive one.
      */
     spin_lock_irq(shost->host_lock);
     fc_flag = vport->fc_flag;
     port_state = vport->port_state;
     vport->fc_flag |= FC_PT2PT;
     vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
 
     /* Acking an unsol FLOGI.  Count 1 for link bounce
      * work-around.
      */
     vport->rcv_flogi_cnt++;
     spin_unlock_irq(shost->host_lock);
     lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
              "3311 Rcv Flogi PS x%x new PS x%x "
              "fc_flag x%x new fc_flag x%x\n",
              port_state, vport->port_state,
              fc_flag, vport->fc_flag);
 
     /*
      * We temporarily set fc_myDID to make it look like we are
      * a Fabric. This is done just so we end up with the right
      * did / sid on the FLOGI ACC rsp.
      */
     did = vport->fc_myDID;
     vport->fc_myDID = Fabric_DID;
 
     memcpy(&phba->fc_fabparam, sp, sizeof(struct serv_parm));
 
     /* Defer ACC response until AFTER we issue a FLOGI */
     if (!(phba->hba_flag & HBA_FLOGI_ISSUED)) {
         phba->defer_flogi_acc_rx_id = bf_get(wqe_ctxt_tag,
                              &wqe->xmit_els_rsp.wqe_com);
         phba->defer_flogi_acc_ox_id = bf_get(wqe_rcvoxid,
                              &wqe->xmit_els_rsp.wqe_com);
 
         vport->fc_myDID = did;
 
         lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
                  "3344 Deferring FLOGI ACC: rx_id: x%x,"
                  " ox_id: x%x, hba_flag x%x\n",
                  phba->defer_flogi_acc_rx_id,
                  phba->defer_flogi_acc_ox_id, phba->hba_flag);
 
         phba->defer_flogi_acc_flag = true;
 
         return 0;
     }
 
     /* Send back ACC */
     lpfc_els_rsp_acc(vport, ELS_CMD_FLOGI, cmdiocb, ndlp, NULL);
 
     /* Now lets put fc_myDID back to what its supposed to be */
     vport->fc_myDID = did;
 
     return 0;
 }
 
 /**
  * lpfc_els_rcv_rnid - Process an unsolicited rnid iocb
  * @vport: pointer to a host virtual N_Port data structure.
  * @cmdiocb: pointer to lpfc command iocb data structure.
  * @ndlp: pointer to a node-list data structure.
  *
  * This routine processes Request Node Identification Data (RNID) IOCB
  * received as an ELS unsolicited event. Only when the RNID specified format
  * 0x0 or 0xDF (Topology Discovery Specific Node Identification Data)
  * present, this routine will invoke the lpfc_els_rsp_rnid_acc() routine to
  * Accept (ACC) the RNID ELS command. All the other RNID formats are
  * rejected by invoking the lpfc_els_rsp_reject() routine.
  *
  * Return code
  *   0 - Successfully processed rnid iocb (currently always return 0)
  **/
 static int
 lpfc_els_rcv_rnid(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
           struct lpfc_nodelist *ndlp)
 {
     struct lpfc_dmabuf *pcmd;
     uint32_t *lp;
     RNID *rn;
     struct ls_rjt stat;
 
     pcmd = cmdiocb->cmd_dmabuf;
     lp = (uint32_t *) pcmd->virt;
 
     lp++;
     rn = (RNID *) lp;
 
     /* RNID received */
 
     switch (rn->Format) {
     case 0:
     case RNID_TOPOLOGY_DISC:
         /* Send back ACC */
         lpfc_els_rsp_rnid_acc(vport, rn->Format, cmdiocb, ndlp);
         break;
     default:
         /* Reject this request because format not supported */
         stat.un.b.lsRjtRsvd0 = 0;
         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
         stat.un.b.lsRjtRsnCodeExp = LSEXP_CANT_GIVE_DATA;
         stat.un.b.vendorUnique = 0;
         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
             NULL);
     }
     return 0;
 }
 
 /**
  * lpfc_els_rcv_echo - Process an unsolicited echo iocb
  * @vport: pointer to a host virtual N_Port data structure.
  * @cmdiocb: pointer to lpfc command iocb data structure.
  * @ndlp: pointer to a node-list data structure.
  *
  * Return code
  *   0 - Successfully processed echo iocb (currently always return 0)
  **/
 static int
 lpfc_els_rcv_echo(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
           struct lpfc_nodelist *ndlp)
 {
     uint8_t *pcmd;
 
     pcmd = (uint8_t *)cmdiocb->cmd_dmabuf->virt;
 
     /* skip over first word of echo command to find echo data */
     pcmd += sizeof(uint32_t);
 
     lpfc_els_rsp_echo_acc(vport, pcmd, cmdiocb, ndlp);
     return 0;
 }
 
 /**
  * lpfc_els_rcv_lirr - Process an unsolicited lirr iocb
  * @vport: pointer to a host virtual N_Port data structure.
  * @cmdiocb: pointer to lpfc command iocb data structure.
  * @ndlp: pointer to a node-list data structure.
  *
  * This routine processes a Link Incident Report Registration(LIRR) IOCB
  * received as an ELS unsolicited event. Currently, this function just invokes
  * the lpfc_els_rsp_reject() routine to reject the LIRR IOCB unconditionally.
  *
  * Return code
  *   0 - Successfully processed lirr iocb (currently always return 0)
  **/
 static int
 lpfc_els_rcv_lirr(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
           struct lpfc_nodelist *ndlp)
 {
     struct ls_rjt stat;
 
     /* For now, unconditionally reject this command */
     stat.un.b.lsRjtRsvd0 = 0;
     stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
     stat.un.b.lsRjtRsnCodeExp = LSEXP_CANT_GIVE_DATA;
     stat.un.b.vendorUnique = 0;
     lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
     return 0;
 }
 
 /**
  * lpfc_els_rcv_rrq - Process an unsolicited rrq iocb
  * @vport: pointer to a host virtual N_Port data structure.
  * @cmdiocb: pointer to lpfc command iocb data structure.
  * @ndlp: pointer to a node-list data structure.
  *
  * This routine processes a Reinstate Recovery Qualifier (RRQ) IOCB
  * received as an ELS unsolicited event. A request to RRQ shall only
  * be accepted if the Originator Nx_Port N_Port_ID or the Responder
  * Nx_Port N_Port_ID of the target Exchange is the same as the
  * N_Port_ID of the Nx_Port that makes the request. If the RRQ is
  * not accepted, an LS_RJT with reason code "Unable to perform
  * command request" and reason code explanation "Invalid Originator
  * S_ID" shall be returned. For now, we just unconditionally accept
  * RRQ from the target.
  **/
 static void
 lpfc_els_rcv_rrq(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
          struct lpfc_nodelist *ndlp)
 {
     lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
     if (vport->phba->sli_rev == LPFC_SLI_REV4)
         lpfc_els_clear_rrq(vport, cmdiocb, ndlp);
 }
 
 /**
  * lpfc_els_rsp_rls_acc - Completion callbk func for MBX_READ_LNK_STAT mbox cmd
  * @phba: pointer to lpfc hba data structure.
  * @pmb: pointer to the driver internal queue element for mailbox command.
  *
  * This routine is the completion callback function for the MBX_READ_LNK_STAT
  * mailbox command. This callback function is to actually send the Accept
  * (ACC) response to a Read Link Status (RLS) unsolicited IOCB event. It
  * collects the link statistics from the completion of the MBX_READ_LNK_STAT
  * mailbox command, constructs the RLS response with the link statistics
  * collected, and then invokes the lpfc_sli_issue_iocb() routine to send ACC
  * response to the RLS.
  *
  * Note that the ndlp reference count will be incremented by 1 for holding the
  * ndlp and the reference to ndlp will be stored into the ndlp field of
  * the IOCB for the completion callback function to the RLS Accept Response
  * ELS IOCB command.
  *
  **/
 static void
 lpfc_els_rsp_rls_acc(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
 {
     int rc = 0;
     MAILBOX_t *mb;
     IOCB_t *icmd;
     union lpfc_wqe128 *wqe;
     struct RLS_RSP *rls_rsp;
     uint8_t *pcmd;
     struct lpfc_iocbq *elsiocb;
     struct lpfc_nodelist *ndlp;
     uint16_t oxid;
     uint16_t rxid;
     uint32_t cmdsize;
     u32 ulp_context;
 
     mb = &pmb->u.mb;
 
     ndlp = pmb->ctx_ndlp;
     rxid = (uint16_t)((unsigned long)(pmb->ctx_buf) & 0xffff);
     oxid = (uint16_t)(((unsigned long)(pmb->ctx_buf) >> 16) & 0xffff);
     pmb->ctx_buf = NULL;
     pmb->ctx_ndlp = NULL;
 
     if (mb->mbxStatus) {
         mempool_free(pmb, phba->mbox_mem_pool);
         return;
     }
 
     cmdsize = sizeof(struct RLS_RSP) + sizeof(uint32_t);
     elsiocb = lpfc_prep_els_iocb(phba->pport, 0, cmdsize,
                      lpfc_max_els_tries, ndlp,
                      ndlp->nlp_DID, ELS_CMD_ACC);
 
     /* Decrement the ndlp reference count from previous mbox command */
     lpfc_nlp_put(ndlp);
 
     if (!elsiocb) {
         mempool_free(pmb, phba->mbox_mem_pool);
         return;
     }
 
     ulp_context = get_job_ulpcontext(phba, elsiocb);
     if (phba->sli_rev == LPFC_SLI_REV4) {
         wqe = &elsiocb->wqe;
         /* Xri / rx_id */
         bf_set(wqe_ctxt_tag, &wqe->generic.wqe_com, rxid);
         bf_set(wqe_rcvoxid, &wqe->xmit_els_rsp.wqe_com, oxid);
     } else {
         icmd = &elsiocb->iocb;
         icmd->ulpContext = rxid;
         icmd->unsli3.rcvsli3.ox_id = oxid;
     }
 
     pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt;
     *((uint32_t *) (pcmd)) = ELS_CMD_ACC;
     pcmd += sizeof(uint32_t); /* Skip past command */
     rls_rsp = (struct RLS_RSP *)pcmd;
 
     rls_rsp->linkFailureCnt = cpu_to_be32(mb->un.varRdLnk.linkFailureCnt);
     rls_rsp->lossSyncCnt = cpu_to_be32(mb->un.varRdLnk.lossSyncCnt);
     rls_rsp->lossSignalCnt = cpu_to_be32(mb->un.varRdLnk.lossSignalCnt);
     rls_rsp->primSeqErrCnt = cpu_to_be32(mb->un.varRdLnk.primSeqErrCnt);
     rls_rsp->invalidXmitWord = cpu_to_be32(mb->un.varRdLnk.invalidXmitWord);
     rls_rsp->crcCnt = cpu_to_be32(mb->un.varRdLnk.crcCnt);
     mempool_free(pmb, phba->mbox_mem_pool);
     /* Xmit ELS RLS ACC response tag <ulpIoTag> */
     lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_ELS,
              "2874 Xmit ELS RLS ACC response tag x%x xri x%x, "
              "did x%x, nlp_flag x%x, nlp_state x%x, rpi x%x\n",
              elsiocb->iotag, ulp_context,
              ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
              ndlp->nlp_rpi);
     elsiocb->cmd_cmpl = lpfc_cmpl_els_rsp;
     phba->fc_stat.elsXmitACC++;
     elsiocb->ndlp = lpfc_nlp_get(ndlp);
     if (!elsiocb->ndlp) {
         lpfc_els_free_iocb(phba, elsiocb);
         return;
     }
 
     rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
     if (rc == IOCB_ERROR) {
         lpfc_els_free_iocb(phba, elsiocb);
         lpfc_nlp_put(ndlp);
     }
     return;
 }
 
 /**
  * lpfc_els_rcv_rls - Process an unsolicited rls iocb
  * @vport: pointer to a host virtual N_Port data structure.
  * @cmdiocb: pointer to lpfc command iocb data structure.
  * @ndlp: pointer to a node-list data structure.
  *
  * This routine processes Read Link Status (RLS) IOCB received as an
  * ELS unsolicited event. It first checks the remote port state. If the
  * remote port is not in NLP_STE_UNMAPPED_NODE state or NLP_STE_MAPPED_NODE
  * state, it invokes the lpfc_els_rsl_reject() routine to send the reject
  * response. Otherwise, it issue the MBX_READ_LNK_STAT mailbox command
  * for reading the HBA link statistics. It is for the callback function,
  * lpfc_els_rsp_rls_acc(), set to the MBX_READ_LNK_STAT mailbox command
  * to actually sending out RPL Accept (ACC) response.
  *
  * Return codes
  *   0 - Successfully processed rls iocb (currently always return 0)
  **/
 static int
 lpfc_els_rcv_rls(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
          struct lpfc_nodelist *ndlp)
 {
     struct lpfc_hba *phba = vport->phba;
     LPFC_MBOXQ_t *mbox;
     struct ls_rjt stat;
     u32 ctx = get_job_ulpcontext(phba, cmdiocb);
     u32 ox_id = get_job_rcvoxid(phba, cmdiocb);
 
     if ((ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) &&
         (ndlp->nlp_state != NLP_STE_MAPPED_NODE))
         /* reject the unsolicited RLS request and done with it */
         goto reject_out;
 
     mbox = mempool_alloc(phba->mbox_mem_pool, GFP_ATOMIC);
     if (mbox) {
         lpfc_read_lnk_stat(phba, mbox);
         mbox->ctx_buf = (void *)((unsigned long)
                      (ox_id << 16 | ctx));
         mbox->ctx_ndlp = lpfc_nlp_get(ndlp);
         if (!mbox->ctx_ndlp)
             goto node_err;
         mbox->vport = vport;
         mbox->mbox_cmpl = lpfc_els_rsp_rls_acc;
         if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT)
             != MBX_NOT_FINISHED)
             /* Mbox completion will send ELS Response */
             return 0;
         /* Decrement reference count used for the failed mbox
          * command.
          */
         lpfc_nlp_put(ndlp);
 node_err:
         mempool_free(mbox, phba->mbox_mem_pool);
     }
 reject_out:
     /* issue rejection response */
     stat.un.b.lsRjtRsvd0 = 0;
     stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
     stat.un.b.lsRjtRsnCodeExp = LSEXP_CANT_GIVE_DATA;
     stat.un.b.vendorUnique = 0;
     lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
     return 0;
 }
 
 /**
  * lpfc_els_rcv_rtv - Process an unsolicited rtv iocb
  * @vport: pointer to a host virtual N_Port data structure.
  * @cmdiocb: pointer to lpfc command iocb data structure.
  * @ndlp: pointer to a node-list data structure.
  *
  * This routine processes Read Timout Value (RTV) IOCB received as an
  * ELS unsolicited event. It first checks the remote port state. If the
  * remote port is not in NLP_STE_UNMAPPED_NODE state or NLP_STE_MAPPED_NODE
  * state, it invokes the lpfc_els_rsl_reject() routine to send the reject
  * response. Otherwise, it sends the Accept(ACC) response to a Read Timeout
  * Value (RTV) unsolicited IOCB event.
  *
  * Note that the ndlp reference count will be incremented by 1 for holding the
  * ndlp and the reference to ndlp will be stored into the ndlp field of
  * the IOCB for the completion callback function to the RTV Accept Response
  * ELS IOCB command.
  *
  * Return codes
  *   0 - Successfully processed rtv iocb (currently always return 0)
  **/
 static int
 lpfc_els_rcv_rtv(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
          struct lpfc_nodelist *ndlp)
 {
     int rc = 0;
     IOCB_t *icmd;
     union lpfc_wqe128 *wqe;
     struct lpfc_hba *phba = vport->phba;
     struct ls_rjt stat;
     struct RTV_RSP *rtv_rsp;
     uint8_t *pcmd;
     struct lpfc_iocbq *elsiocb;
     uint32_t cmdsize;
     u32 ulp_context;
 
     if ((ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) &&
         (ndlp->nlp_state != NLP_STE_MAPPED_NODE))
         /* reject the unsolicited RTV request and done with it */
         goto reject_out;
 
     cmdsize = sizeof(struct RTV_RSP) + sizeof(uint32_t);
     elsiocb = lpfc_prep_els_iocb(phba->pport, 0, cmdsize,
                      lpfc_max_els_tries, ndlp,
                      ndlp->nlp_DID, ELS_CMD_ACC);
 
     if (!elsiocb)
         return 1;
 
     pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt;
     *((uint32_t *) (pcmd)) = ELS_CMD_ACC;
     pcmd += sizeof(uint32_t); /* Skip past command */
 
     ulp_context = get_job_ulpcontext(phba, elsiocb);
     /* use the command's xri in the response */
     if (phba->sli_rev == LPFC_SLI_REV4) {
         wqe = &elsiocb->wqe;
         bf_set(wqe_ctxt_tag, &wqe->generic.wqe_com,
                get_job_ulpcontext(phba, cmdiocb));
         bf_set(wqe_rcvoxid, &wqe->xmit_els_rsp.wqe_com,
                get_job_rcvoxid(phba, cmdiocb));
     } else {
         icmd = &elsiocb->iocb;
         icmd->ulpContext = get_job_ulpcontext(phba, cmdiocb);
         icmd->unsli3.rcvsli3.ox_id = get_job_rcvoxid(phba, cmdiocb);
     }
 
     rtv_rsp = (struct RTV_RSP *)pcmd;
 
     /* populate RTV payload */
     rtv_rsp->ratov = cpu_to_be32(phba->fc_ratov * 1000); /* report msecs */
     rtv_rsp->edtov = cpu_to_be32(phba->fc_edtov);
     bf_set(qtov_edtovres, rtv_rsp, phba->fc_edtovResol ? 1 : 0);
     bf_set(qtov_rttov, rtv_rsp, 0); /* Field is for FC ONLY */
     rtv_rsp->qtov = cpu_to_be32(rtv_rsp->qtov);
 
     /* Xmit ELS RLS ACC response tag <ulpIoTag> */
     lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_ELS,
              "2875 Xmit ELS RTV ACC response tag x%x xri x%x, "
              "did x%x, nlp_flag x%x, nlp_state x%x, rpi x%x, "
              "Data: x%x x%x x%x\n",
              elsiocb->iotag, ulp_context,
              ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
              ndlp->nlp_rpi,
             rtv_rsp->ratov, rtv_rsp->edtov, rtv_rsp->qtov);
     elsiocb->cmd_cmpl = lpfc_cmpl_els_rsp;
     phba->fc_stat.elsXmitACC++;
     elsiocb->ndlp = lpfc_nlp_get(ndlp);
     if (!elsiocb->ndlp) {
         lpfc_els_free_iocb(phba, elsiocb);
         return 0;
     }
 
     rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
     if (rc == IOCB_ERROR) {
         lpfc_els_free_iocb(phba, elsiocb);
         lpfc_nlp_put(ndlp);
     }
     return 0;
 
 reject_out:
     /* issue rejection response */
     stat.un.b.lsRjtRsvd0 = 0;
     stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
     stat.un.b.lsRjtRsnCodeExp = LSEXP_CANT_GIVE_DATA;
     stat.un.b.vendorUnique = 0;
     lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
     return 0;
 }
 
 /* lpfc_issue_els_rrq - Process an unsolicited rrq iocb
  * @vport: pointer to a host virtual N_Port data structure.
  * @ndlp: pointer to a node-list data structure.
  * @did: DID of the target.
  * @rrq: Pointer to the rrq struct.
  *
  * Build a ELS RRQ command and send it to the target. If the issue_iocb is
  * Successful the the completion handler will clear the RRQ.
  *
  * Return codes
  *   0 - Successfully sent rrq els iocb.
  *   1 - Failed to send rrq els iocb.
  **/
 static int
 lpfc_issue_els_rrq(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
             uint32_t did, struct lpfc_node_rrq *rrq)
 {
     struct lpfc_hba  *phba = vport->phba;
     struct RRQ *els_rrq;
     struct lpfc_iocbq *elsiocb;
     uint8_t *pcmd;
     uint16_t cmdsize;
     int ret;
 
     if (!ndlp)
         return 1;
 
     /* If ndlp is not NULL, we will bump the reference count on it */
     cmdsize = (sizeof(uint32_t) + sizeof(struct RRQ));
     elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, 0, ndlp, did,
                      ELS_CMD_RRQ);
     if (!elsiocb)
         return 1;
 
     pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt;
 
     /* For RRQ request, remainder of payload is Exchange IDs */
     *((uint32_t *) (pcmd)) = ELS_CMD_RRQ;
     pcmd += sizeof(uint32_t);
     els_rrq = (struct RRQ *) pcmd;
 
     bf_set(rrq_oxid, els_rrq, phba->sli4_hba.xri_ids[rrq->xritag]);
     bf_set(rrq_rxid, els_rrq, rrq->rxid);
     bf_set(rrq_did, els_rrq, vport->fc_myDID);
     els_rrq->rrq = cpu_to_be32(els_rrq->rrq);
     els_rrq->rrq_exchg = cpu_to_be32(els_rrq->rrq_exchg);
 
 
     lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
         "Issue RRQ:     did:x%x",
         did, rrq->xritag, rrq->rxid);
     elsiocb->context_un.rrq = rrq;
     elsiocb->cmd_cmpl = lpfc_cmpl_els_rrq;
 
     elsiocb->ndlp = lpfc_nlp_get(ndlp);
     if (!elsiocb->ndlp)
         goto io_err;
 
     ret = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
     if (ret == IOCB_ERROR) {
         lpfc_nlp_put(ndlp);
         goto io_err;
     }
     return 0;
 
  io_err:
     lpfc_els_free_iocb(phba, elsiocb);
     return 1;
 }
 
 /**
  * lpfc_send_rrq - Sends ELS RRQ if needed.
  * @phba: pointer to lpfc hba data structure.
  * @rrq: pointer to the active rrq.
  *
  * This routine will call the lpfc_issue_els_rrq if the rrq is
  * still active for the xri. If this function returns a failure then
  * the caller needs to clean up the RRQ by calling lpfc_clr_active_rrq.
  *
  * Returns 0 Success.
  *         1 Failure.
  **/
 int
 lpfc_send_rrq(struct lpfc_hba *phba, struct lpfc_node_rrq *rrq)
 {
     struct lpfc_nodelist *ndlp = lpfc_findnode_did(rrq->vport,
                                rrq->nlp_DID);
     if (!ndlp)
         return 1;
 
     if (lpfc_test_rrq_active(phba, ndlp, rrq->xritag))
         return lpfc_issue_els_rrq(rrq->vport, ndlp,
                      rrq->nlp_DID, rrq);
     else
         return 1;
 }
 
 /**
  * lpfc_els_rsp_rpl_acc - Issue an accept rpl els command
  * @vport: pointer to a host virtual N_Port data structure.
  * @cmdsize: size of the ELS command.
  * @oldiocb: pointer to the original lpfc command iocb data structure.
  * @ndlp: pointer to a node-list data structure.
  *
  * This routine issuees an Accept (ACC) Read Port List (RPL) ELS command.
  * It is to be called by the lpfc_els_rcv_rpl() routine to accept the RPL.
  *
  * Note that the ndlp reference count will be incremented by 1 for holding the
  * ndlp and the reference to ndlp will be stored into the ndlp field of
  * the IOCB for the completion callback function to the RPL Accept Response
  * ELS command.
  *
  * Return code
  *   0 - Successfully issued ACC RPL ELS command
  *   1 - Failed to issue ACC RPL ELS command
  **/
 static int
 lpfc_els_rsp_rpl_acc(struct lpfc_vport *vport, uint16_t cmdsize,
              struct lpfc_iocbq *oldiocb, struct lpfc_nodelist *ndlp)
 {
     int rc = 0;
     struct lpfc_hba *phba = vport->phba;
     IOCB_t *icmd;
     union lpfc_wqe128 *wqe;
     RPL_RSP rpl_rsp;
     struct lpfc_iocbq *elsiocb;
     uint8_t *pcmd;
     u32 ulp_context;
 
     elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp,
                      ndlp->nlp_DID, ELS_CMD_ACC);
 
     if (!elsiocb)
         return 1;
 
     ulp_context = get_job_ulpcontext(phba, elsiocb);
     if (phba->sli_rev == LPFC_SLI_REV4) {
         wqe = &elsiocb->wqe;
         /* Xri / rx_id */
         bf_set(wqe_ctxt_tag, &wqe->generic.wqe_com,
                get_job_ulpcontext(phba, oldiocb));
         bf_set(wqe_rcvoxid, &wqe->xmit_els_rsp.wqe_com,
                get_job_rcvoxid(phba, oldiocb));
     } else {
         icmd = &elsiocb->iocb;
         icmd->ulpContext = get_job_ulpcontext(phba, oldiocb);
         icmd->unsli3.rcvsli3.ox_id = get_job_rcvoxid(phba, oldiocb);
     }
 
     pcmd = elsiocb->cmd_dmabuf->virt;
     *((uint32_t *) (pcmd)) = ELS_CMD_ACC;
     pcmd += sizeof(uint16_t);
     *((uint16_t *)(pcmd)) = be16_to_cpu(cmdsize);
     pcmd += sizeof(uint16_t);
 
     /* Setup the RPL ACC payload */
     rpl_rsp.listLen = be32_to_cpu(1);
     rpl_rsp.index = 0;
     rpl_rsp.port_num_blk.portNum = 0;
     rpl_rsp.port_num_blk.portID = be32_to_cpu(vport->fc_myDID);
     memcpy(&rpl_rsp.port_num_blk.portName, &vport->fc_portname,
         sizeof(struct lpfc_name));
     memcpy(pcmd, &rpl_rsp, cmdsize - sizeof(uint32_t));
     /* Xmit ELS RPL ACC response tag <ulpIoTag> */
     lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
              "0120 Xmit ELS RPL ACC response tag x%x "
              "xri x%x, did x%x, nlp_flag x%x, nlp_state x%x, "
              "rpi x%x\n",
              elsiocb->iotag, ulp_context,
              ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
              ndlp->nlp_rpi);
     elsiocb->cmd_cmpl = lpfc_cmpl_els_rsp;
     phba->fc_stat.elsXmitACC++;
     elsiocb->ndlp = lpfc_nlp_get(ndlp);
     if (!elsiocb->ndlp) {
         lpfc_els_free_iocb(phba, elsiocb);
         return 1;
     }
 
     rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
     if (rc == IOCB_ERROR) {
         lpfc_els_free_iocb(phba, elsiocb);
         lpfc_nlp_put(ndlp);
         return 1;
     }
 
     return 0;
 }
 
 /**
  * lpfc_els_rcv_rpl - Process an unsolicited rpl iocb
  * @vport: pointer to a host virtual N_Port data structure.
  * @cmdiocb: pointer to lpfc command iocb data structure.
  * @ndlp: pointer to a node-list data structure.
  *
  * This routine processes Read Port List (RPL) IOCB received as an ELS
  * unsolicited event. It first checks the remote port state. If the remote
  * port is not in NLP_STE_UNMAPPED_NODE and NLP_STE_MAPPED_NODE states, it
  * invokes the lpfc_els_rsp_reject() routine to send reject response.
  * Otherwise, this routine then invokes the lpfc_els_rsp_rpl_acc() routine
  * to accept the RPL.
  *
  * Return code
  *   0 - Successfully processed rpl iocb (currently always return 0)
  **/
 static int
 lpfc_els_rcv_rpl(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
          struct lpfc_nodelist *ndlp)
 {
     struct lpfc_dmabuf *pcmd;
     uint32_t *lp;
     uint32_t maxsize;
     uint16_t cmdsize;
     RPL *rpl;
     struct ls_rjt stat;
 
     if ((ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) &&
         (ndlp->nlp_state != NLP_STE_MAPPED_NODE)) {
         /* issue rejection response */
         stat.un.b.lsRjtRsvd0 = 0;
         stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
         stat.un.b.lsRjtRsnCodeExp = LSEXP_CANT_GIVE_DATA;
         stat.un.b.vendorUnique = 0;
         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
             NULL);
         /* rejected the unsolicited RPL request and done with it */
         return 0;
     }
 
     pcmd = cmdiocb->cmd_dmabuf;
     lp = (uint32_t *) pcmd->virt;
     rpl = (RPL *) (lp + 1);
     maxsize = be32_to_cpu(rpl->maxsize);
 
     /* We support only one port */
     if ((rpl->index == 0) &&
         ((maxsize == 0) ||
          ((maxsize * sizeof(uint32_t)) >= sizeof(RPL_RSP)))) {
         cmdsize = sizeof(uint32_t) + sizeof(RPL_RSP);
     } else {
         cmdsize = sizeof(uint32_t) + maxsize * sizeof(uint32_t);
     }
     lpfc_els_rsp_rpl_acc(vport, cmdsize, cmdiocb, ndlp);
 
     return 0;
 }
 
 /**
  * lpfc_els_rcv_farp - Process an unsolicited farp request els command
  * @vport: pointer to a virtual N_Port data structure.
  * @cmdiocb: pointer to lpfc command iocb data structure.
  * @ndlp: pointer to a node-list data structure.
  *
  * This routine processes Fibre Channel Address Resolution Protocol
  * (FARP) Request IOCB received as an ELS unsolicited event. Currently,
  * the lpfc driver only supports matching on WWPN or WWNN for FARP. As such,
  * FARP_MATCH_PORT flag and FARP_MATCH_NODE flag are checked against the
  * Match Flag in the FARP request IOCB: if FARP_MATCH_PORT flag is set, the
  * remote PortName is compared against the FC PortName stored in the @vport
  * data structure; if FARP_MATCH_NODE flag is set, the remote NodeName is
  * compared against the FC NodeName stored in the @vport data structure.
  * If any of these matches and the FARP_REQUEST_FARPR flag is set in the
  * FARP request IOCB Response Flag, the lpfc_issue_els_farpr() routine is
  * invoked to send out FARP Response to the remote node. Before sending the
  * FARP Response, however, the FARP_REQUEST_PLOGI flag is check in the FARP
  * request IOCB Response Flag and, if it is set, the lpfc_issue_els_plogi()
  * routine is invoked to log into the remote port first.
  *
  * Return code
  *   0 - Either the FARP Match Mode not supported or successfully processed
  **/
 static int
 lpfc_els_rcv_farp(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
           struct lpfc_nodelist *ndlp)
 {
     struct lpfc_dmabuf *pcmd;
     uint32_t *lp;
     FARP *fp;
     uint32_t cnt, did;
 
     did = get_job_els_rsp64_did(vport->phba, cmdiocb);
     pcmd = cmdiocb->cmd_dmabuf;
     lp = (uint32_t *) pcmd->virt;
 
     lp++;
     fp = (FARP *) lp;
     /* FARP-REQ received from DID <did> */
     lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
              "0601 FARP-REQ received from DID x%x\n", did);
     /* We will only support match on WWPN or WWNN */
     if (fp->Mflags & ~(FARP_MATCH_NODE | FARP_MATCH_PORT)) {
         return 0;
     }
 
     cnt = 0;
     /* If this FARP command is searching for my portname */
     if (fp->Mflags & FARP_MATCH_PORT) {
         if (memcmp(&fp->RportName, &vport->fc_portname,
                sizeof(struct lpfc_name)) == 0)
             cnt = 1;
     }
 
     /* If this FARP command is searching for my nodename */
     if (fp->Mflags & FARP_MATCH_NODE) {
         if (memcmp(&fp->RnodeName, &vport->fc_nodename,
                sizeof(struct lpfc_name)) == 0)
             cnt = 1;
     }
 
     if (cnt) {
         if ((ndlp->nlp_state == NLP_STE_UNMAPPED_NODE) ||
            (ndlp->nlp_state == NLP_STE_MAPPED_NODE)) {
             /* Log back into the node before sending the FARP. */
             if (fp->Rflags & FARP_REQUEST_PLOGI) {
                 ndlp->nlp_prev_state = ndlp->nlp_state;
                 lpfc_nlp_set_state(vport, ndlp,
                            NLP_STE_PLOGI_ISSUE);
                 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
             }
 
             /* Send a FARP response to that node */
             if (fp->Rflags & FARP_REQUEST_FARPR)
                 lpfc_issue_els_farpr(vport, did, 0);
         }
     }
     return 0;
 }
 
 /**
  * lpfc_els_rcv_farpr - Process an unsolicited farp response iocb
  * @vport: pointer to a host virtual N_Port data structure.
  * @cmdiocb: pointer to lpfc command iocb data structure.
  * @ndlp: pointer to a node-list data structure.
  *
  * This routine processes Fibre Channel Address Resolution Protocol
  * Response (FARPR) IOCB received as an ELS unsolicited event. It simply
  * invokes the lpfc_els_rsp_acc() routine to the remote node to accept
  * the FARP response request.
  *
  * Return code
  *   0 - Successfully processed FARPR IOCB (currently always return 0)
  **/
 static int
 lpfc_els_rcv_farpr(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
            struct lpfc_nodelist  *ndlp)
 {
     struct lpfc_dmabuf *pcmd;
     uint32_t *lp;
     uint32_t did;
 
     did = get_job_els_rsp64_did(vport->phba, cmdiocb);
     pcmd = cmdiocb->cmd_dmabuf;
     lp = (uint32_t *)pcmd->virt;
 
     lp++;
     /* FARP-RSP received from DID <did> */
     lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
              "0600 FARP-RSP received from DID x%x\n", did);
     /* ACCEPT the Farp resp request */
     lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
 
     return 0;
 }
 
 /**
  * lpfc_els_rcv_fan - Process an unsolicited fan iocb command
  * @vport: pointer to a host virtual N_Port data structure.
  * @cmdiocb: pointer to lpfc command iocb data structure.
  * @fan_ndlp: pointer to a node-list data structure.
  *
  * This routine processes a Fabric Address Notification (FAN) IOCB
  * command received as an ELS unsolicited event. The FAN ELS command will
  * only be processed on a physical port (i.e., the @vport represents the
  * physical port). The fabric NodeName and PortName from the FAN IOCB are
  * compared against those in the phba data structure. If any of those is
  * different, the lpfc_initial_flogi() routine is invoked to initialize
  * Fabric Login (FLOGI) to the fabric to start the discover over. Otherwise,
  * if both of those are identical, the lpfc_issue_fabric_reglogin() routine
  * is invoked to register login to the fabric.
  *
  * Return code
  *   0 - Successfully processed fan iocb (currently always return 0).
  **/
 static int
 lpfc_els_rcv_fan(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
          struct lpfc_nodelist *fan_ndlp)
 {
     struct lpfc_hba *phba = vport->phba;
     uint32_t *lp;
     FAN *fp;
 
     lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, "0265 FAN received\n");
     lp = (uint32_t *)cmdiocb->cmd_dmabuf->virt;
     fp = (FAN *) ++lp;
     /* FAN received; Fan does not have a reply sequence */
     if ((vport == phba->pport) &&
         (vport->port_state == LPFC_LOCAL_CFG_LINK)) {
         if ((memcmp(&phba->fc_fabparam.nodeName, &fp->FnodeName,
                 sizeof(struct lpfc_name))) ||
             (memcmp(&phba->fc_fabparam.portName, &fp->FportName,
                 sizeof(struct lpfc_name)))) {
             /* This port has switched fabrics. FLOGI is required */
             lpfc_issue_init_vfi(vport);
         } else {
             /* FAN verified - skip FLOGI */
             vport->fc_myDID = vport->fc_prevDID;
             if (phba->sli_rev < LPFC_SLI_REV4)
                 lpfc_issue_fabric_reglogin(vport);
             else {
                 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
                     "3138 Need register VFI: (x%x/%x)\n",
                     vport->fc_prevDID, vport->fc_myDID);
                 lpfc_issue_reg_vfi(vport);
             }
         }
     }
     return 0;
 }
 
 /**
  * lpfc_els_rcv_edc - Process an unsolicited EDC iocb
  * @vport: pointer to a host virtual N_Port data structure.
  * @cmdiocb: pointer to lpfc command iocb data structure.
  * @ndlp: pointer to a node-list data structure.
  *
  * Return code
  *   0 - Successfully processed echo iocb (currently always return 0)
  **/
 static int
 lpfc_els_rcv_edc(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
          struct lpfc_nodelist *ndlp)
 {
     struct lpfc_hba  *phba = vport->phba;
     struct fc_els_edc *edc_req;
     struct fc_tlv_desc *tlv;
     uint8_t *payload;
     uint32_t *ptr, dtag;
     const char *dtag_nm;
     int desc_cnt = 0, bytes_remain;
     bool rcv_cap_desc = false;
 
     payload = cmdiocb->cmd_dmabuf->virt;
 
     edc_req = (struct fc_els_edc *)payload;
     bytes_remain = be32_to_cpu(edc_req->desc_len);
 
     ptr = (uint32_t *)payload;
     lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS | LOG_CGN_MGMT,
              "3319 Rcv EDC payload len %d: x%x x%x x%x\n",
              bytes_remain, be32_to_cpu(*ptr),
              be32_to_cpu(*(ptr + 1)), be32_to_cpu(*(ptr + 2)));
 
     /* No signal support unless there is a congestion descriptor */
     phba->cgn_reg_signal = EDC_CG_SIG_NOTSUPPORTED;
     phba->cgn_sig_freq = 0;
     phba->cgn_reg_fpin = LPFC_CGN_FPIN_ALARM | LPFC_CGN_FPIN_WARN;
 
     if (bytes_remain <= 0)
         goto out;
 
     tlv = edc_req->desc;
 
     /*
      * cycle through EDC diagnostic descriptors to find the
      * congestion signaling capability descriptor
      */
     while (bytes_remain && !rcv_cap_desc) {
         if (bytes_remain < FC_TLV_DESC_HDR_SZ) {
             lpfc_printf_log(phba, KERN_WARNING, LOG_CGN_MGMT,
                     "6464 Truncated TLV hdr on "
                     "Diagnostic descriptor[%d]\n",
                     desc_cnt);
             goto out;
         }
 
         dtag = be32_to_cpu(tlv->desc_tag);
         switch (dtag) {
         case ELS_DTAG_LNK_FAULT_CAP:
             if (bytes_remain < FC_TLV_DESC_SZ_FROM_LENGTH(tlv) ||
                 FC_TLV_DESC_SZ_FROM_LENGTH(tlv) !=
                 sizeof(struct fc_diag_lnkflt_desc)) {
                 lpfc_printf_log(
                     phba, KERN_WARNING, LOG_CGN_MGMT,
                     "6465 Truncated Link Fault Diagnostic "
                     "descriptor[%d]: %d vs 0x%zx 0x%zx\n",
                     desc_cnt, bytes_remain,
                     FC_TLV_DESC_SZ_FROM_LENGTH(tlv),
                     sizeof(struct fc_diag_cg_sig_desc));
                 goto out;
             }
             /* No action for Link Fault descriptor for now */
             break;
         case ELS_DTAG_CG_SIGNAL_CAP:
             if (bytes_remain < FC_TLV_DESC_SZ_FROM_LENGTH(tlv) ||
                 FC_TLV_DESC_SZ_FROM_LENGTH(tlv) !=
                 sizeof(struct fc_diag_cg_sig_desc)) {
                 lpfc_printf_log(
                     phba, KERN_WARNING, LOG_CGN_MGMT,
                     "6466 Truncated cgn signal Diagnostic "
                     "descriptor[%d]: %d vs 0x%zx 0x%zx\n",
                     desc_cnt, bytes_remain,
                     FC_TLV_DESC_SZ_FROM_LENGTH(tlv),
                     sizeof(struct fc_diag_cg_sig_desc));
                 goto out;
             }
 
             phba->cgn_reg_fpin = phba->cgn_init_reg_fpin;
             phba->cgn_reg_signal = phba->cgn_init_reg_signal;
 
             /* We start negotiation with lpfc_fabric_cgn_frequency.
              * When we process the EDC, we will settle on the
              * higher frequency.
              */
             phba->cgn_sig_freq = lpfc_fabric_cgn_frequency;
 
             lpfc_least_capable_settings(
                 phba, (struct fc_diag_cg_sig_desc *)tlv);
             rcv_cap_desc = true;
             break;
         default:
             dtag_nm = lpfc_get_tlv_dtag_nm(dtag);
             lpfc_printf_log(phba, KERN_WARNING, LOG_CGN_MGMT,
                     "6467 unknown Diagnostic "
                     "Descriptor[%d]: tag x%x (%s)\n",
                     desc_cnt, dtag, dtag_nm);
         }
         bytes_remain -= FC_TLV_DESC_SZ_FROM_LENGTH(tlv);
         tlv = fc_tlv_next_desc(tlv);
         desc_cnt++;
     }
 out:
     /* Need to send back an ACC */
     lpfc_issue_els_edc_rsp(vport, cmdiocb, ndlp);
 
     lpfc_config_cgn_signal(phba);
     return 0;
 }
 
 /**
  * lpfc_els_timeout - Handler funciton to the els timer
  * @t: timer context used to obtain the vport.
  *
  * This routine is invoked by the ELS timer after timeout. It posts the ELS
  * timer timeout event by setting the WORKER_ELS_TMO bit to the work port
  * event bitmap and then invokes the lpfc_worker_wake_up() routine to wake
  * up the worker thread. It is for the worker thread to invoke the routine
  * lpfc_els_timeout_handler() to work on the posted event WORKER_ELS_TMO.
  **/
 void
 lpfc_els_timeout(struct timer_list *t)
 {
     struct lpfc_vport *vport = from_timer(vport, t, els_tmofunc);
     struct lpfc_hba   *phba = vport->phba;
     uint32_t tmo_posted;
     unsigned long iflag;
 
     spin_lock_irqsave(&vport->work_port_lock, iflag);
     tmo_posted = vport->work_port_events & WORKER_ELS_TMO;
     if ((!tmo_posted) && (!(vport->load_flag & FC_UNLOADING)))
         vport->work_port_events |= WORKER_ELS_TMO;
     spin_unlock_irqrestore(&vport->work_port_lock, iflag);
 
     if ((!tmo_posted) && (!(vport->load_flag & FC_UNLOADING)))
         lpfc_worker_wake_up(phba);
     return;
 }
 
 
 /**
  * lpfc_els_timeout_handler - Process an els timeout event
  * @vport: pointer to a virtual N_Port data structure.
  *
  * This routine is the actual handler function that processes an ELS timeout
  * event. It walks the ELS ring to get and abort all the IOCBs (except the
  * ABORT/CLOSE/FARP/FARPR/FDISC), which are associated with the @vport by
  * invoking the lpfc_sli_issue_abort_iotag() routine.
  **/
 void
 lpfc_els_timeout_handler(struct lpfc_vport *vport)
 {
     struct lpfc_hba  *phba = vport->phba;
     struct lpfc_sli_ring *pring;
     struct lpfc_iocbq *tmp_iocb, *piocb;
     IOCB_t *cmd = NULL;
     struct lpfc_dmabuf *pcmd;
     uint32_t els_command = 0;
     uint32_t timeout;
     uint32_t remote_ID = 0xffffffff;
     LIST_HEAD(abort_list);
     u32 ulp_command = 0, ulp_context = 0, did = 0, iotag = 0;
 
 
     timeout = (uint32_t)(phba->fc_ratov << 1);
 
     pring = lpfc_phba_elsring(phba);
     if (unlikely(!pring))
         return;
 
     if (phba->pport->load_flag & FC_UNLOADING)
         return;
 
     spin_lock_irq(&phba->hbalock);
     if (phba->sli_rev == LPFC_SLI_REV4)
         spin_lock(&pring->ring_lock);
 
     list_for_each_entry_safe(piocb, tmp_iocb, &pring->txcmplq, list) {
         ulp_command = get_job_cmnd(phba, piocb);
         ulp_context = get_job_ulpcontext(phba, piocb);
         did = get_job_els_rsp64_did(phba, piocb);
 
         if (phba->sli_rev == LPFC_SLI_REV4) {
             iotag = get_wqe_reqtag(piocb);
         } else {
             cmd = &piocb->iocb;
             iotag = cmd->ulpIoTag;
         }
 
         if ((piocb->cmd_flag & LPFC_IO_LIBDFC) != 0 ||
             ulp_command == CMD_ABORT_XRI_CX ||
             ulp_command == CMD_ABORT_XRI_CN ||
             ulp_command == CMD_CLOSE_XRI_CN)
             continue;
 
         if (piocb->vport != vport)
             continue;
 
         pcmd = piocb->cmd_dmabuf;
         if (pcmd)
             els_command = *(uint32_t *) (pcmd->virt);
 
         if (els_command == ELS_CMD_FARP ||
             els_command == ELS_CMD_FARPR ||
             els_command == ELS_CMD_FDISC)
             continue;
 
         if (piocb->drvrTimeout > 0) {
             if (piocb->drvrTimeout >= timeout)
                 piocb->drvrTimeout -= timeout;
             else
                 piocb->drvrTimeout = 0;
             continue;
         }
 
         remote_ID = 0xffffffff;
         if (ulp_command != CMD_GEN_REQUEST64_CR) {
             remote_ID = did;
         } else {
             struct lpfc_nodelist *ndlp;
             ndlp = __lpfc_findnode_rpi(vport, ulp_context);
             if (ndlp)
                 remote_ID = ndlp->nlp_DID;
         }
         list_add_tail(&piocb->dlist, &abort_list);
     }
     if (phba->sli_rev == LPFC_SLI_REV4)
         spin_unlock(&pring->ring_lock);
     spin_unlock_irq(&phba->hbalock);
 
     list_for_each_entry_safe(piocb, tmp_iocb, &abort_list, dlist) {
         lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
              "0127 ELS timeout Data: x%x x%x x%x "
              "x%x\n", els_command,
              remote_ID, ulp_command, iotag);
 
         spin_lock_irq(&phba->hbalock);
         list_del_init(&piocb->dlist);
         lpfc_sli_issue_abort_iotag(phba, pring, piocb, NULL);
         spin_unlock_irq(&phba->hbalock);
     }
 
     /* Make sure HBA is alive */
     lpfc_issue_hb_tmo(phba);
 
     if (!list_empty(&pring->txcmplq))
         if (!(phba->pport->load_flag & FC_UNLOADING))
             mod_timer(&vport->els_tmofunc,
                   jiffies + msecs_to_jiffies(1000 * timeout));
 }
 
 /**
  * lpfc_els_flush_cmd - Clean up the outstanding els commands to a vport
  * @vport: pointer to a host virtual N_Port data structure.
  *
  * This routine is used to clean up all the outstanding ELS commands on a
  * @vport. It first aborts the @vport by invoking lpfc_fabric_abort_vport()
  * routine. After that, it walks the ELS transmit queue to remove all the
  * IOCBs with the @vport other than the QUE_RING and ABORT/CLOSE IOCBs. For
  * the IOCBs with a non-NULL completion callback function, the callback
  * function will be invoked with the status set to IOSTAT_LOCAL_REJECT and
  * un.ulpWord[4] set to IOERR_SLI_ABORTED. For IOCBs with a NULL completion
  * callback function, the IOCB will simply be released. Finally, it walks
  * the ELS transmit completion queue to issue an abort IOCB to any transmit
  * completion queue IOCB that is associated with the @vport and is not
  * an IOCB from libdfc (i.e., the management plane IOCBs that are not
  * part of the discovery state machine) out to HBA by invoking the
  * lpfc_sli_issue_abort_iotag() routine. Note that this function issues the
  * abort IOCB to any transmit completion queueed IOCB, it does not guarantee
  * the IOCBs are aborted when this function returns.
  **/
 void
 lpfc_els_flush_cmd(struct lpfc_vport *vport)
 {
     LIST_HEAD(abort_list);
     struct lpfc_hba  *phba = vport->phba;
     struct lpfc_sli_ring *pring;
     struct lpfc_iocbq *tmp_iocb, *piocb;
     u32 ulp_command;
     unsigned long iflags = 0;
 
     lpfc_fabric_abort_vport(vport);
 
     /*
      * For SLI3, only the hbalock is required.  But SLI4 needs to coordinate
      * with the ring insert operation.  Because lpfc_sli_issue_abort_iotag
      * ultimately grabs the ring_lock, the driver must splice the list into
      * a working list and release the locks before calling the abort.
      */
     spin_lock_irqsave(&phba->hbalock, iflags);
     pring = lpfc_phba_elsring(phba);
 
     /* Bail out if we've no ELS wq, like in PCI error recovery case. */
     if (unlikely(!pring)) {
         spin_unlock_irqrestore(&phba->hbalock, iflags);
         return;
     }
 
     if (phba->sli_rev == LPFC_SLI_REV4)
         spin_lock(&pring->ring_lock);
 
     /* First we need to issue aborts to outstanding cmds on txcmpl */
     list_for_each_entry_safe(piocb, tmp_iocb, &pring->txcmplq, list) {
         if (piocb->cmd_flag & LPFC_IO_LIBDFC)
             continue;
 
         if (piocb->vport != vport)
             continue;
 
         if (piocb->cmd_flag & LPFC_DRIVER_ABORTED)
             continue;
 
         /* On the ELS ring we can have ELS_REQUESTs or
          * GEN_REQUESTs waiting for a response.
          */
         ulp_command = get_job_cmnd(phba, piocb);
         if (ulp_command == CMD_ELS_REQUEST64_CR) {
             list_add_tail(&piocb->dlist, &abort_list);
 
             /* If the link is down when flushing ELS commands
              * the firmware will not complete them till after
              * the link comes back up. This may confuse
              * discovery for the new link up, so we need to
              * change the compl routine to just clean up the iocb
              * and avoid any retry logic.
              */
             if (phba->link_state == LPFC_LINK_DOWN)
                 piocb->cmd_cmpl = lpfc_cmpl_els_link_down;
         }
         if (ulp_command == CMD_GEN_REQUEST64_CR)
             list_add_tail(&piocb->dlist, &abort_list);
     }
 
     if (phba->sli_rev == LPFC_SLI_REV4)
         spin_unlock(&pring->ring_lock);
     spin_unlock_irqrestore(&phba->hbalock, iflags);
 
     /* Abort each txcmpl iocb on aborted list and remove the dlist links. */
     list_for_each_entry_safe(piocb, tmp_iocb, &abort_list, dlist) {
         spin_lock_irqsave(&phba->hbalock, iflags);
         list_del_init(&piocb->dlist);
         lpfc_sli_issue_abort_iotag(phba, pring, piocb, NULL);
         spin_unlock_irqrestore(&phba->hbalock, iflags);
     }
     /* Make sure HBA is alive */
     lpfc_issue_hb_tmo(phba);
 
     if (!list_empty(&abort_list))
         lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
                  "3387 abort list for txq not empty\n");
     INIT_LIST_HEAD(&abort_list);
 
     spin_lock_irqsave(&phba->hbalock, iflags);
     if (phba->sli_rev == LPFC_SLI_REV4)
         spin_lock(&pring->ring_lock);
 
     /* No need to abort the txq list,
      * just queue them up for lpfc_sli_cancel_iocbs
      */
     list_for_each_entry_safe(piocb, tmp_iocb, &pring->txq, list) {
         ulp_command = get_job_cmnd(phba, piocb);
 
         if (piocb->cmd_flag & LPFC_IO_LIBDFC)
             continue;
 
         /* Do not flush out the QUE_RING and ABORT/CLOSE iocbs */
         if (ulp_command == CMD_QUE_RING_BUF_CN ||
             ulp_command == CMD_QUE_RING_BUF64_CN ||
             ulp_command == CMD_CLOSE_XRI_CN ||
             ulp_command == CMD_ABORT_XRI_CN ||
             ulp_command == CMD_ABORT_XRI_CX)
             continue;
 
         if (piocb->vport != vport)
             continue;
 
         list_del_init(&piocb->list);
         list_add_tail(&piocb->list, &abort_list);
     }
 
     /* The same holds true for any FLOGI/FDISC on the fabric_iocb_list */
     if (vport == phba->pport) {
         list_for_each_entry_safe(piocb, tmp_iocb,
                      &phba->fabric_iocb_list, list) {
             list_del_init(&piocb->list);
             list_add_tail(&piocb->list, &abort_list);
         }
     }
 
     if (phba->sli_rev == LPFC_SLI_REV4)
         spin_unlock(&pring->ring_lock);
     spin_unlock_irqrestore(&phba->hbalock, iflags);
 
     /* Cancel all the IOCBs from the completions list */
     lpfc_sli_cancel_iocbs(phba, &abort_list,
                   IOSTAT_LOCAL_REJECT, IOERR_SLI_ABORTED);
 
     return;
 }
 
 /**
  * lpfc_els_flush_all_cmd - Clean up all the outstanding els commands to a HBA
  * @phba: pointer to lpfc hba data structure.
  *
  * This routine is used to clean up all the outstanding ELS commands on a
  * @phba. It first aborts the @phba by invoking the lpfc_fabric_abort_hba()
  * routine. After that, it walks the ELS transmit queue to remove all the
  * IOCBs to the @phba other than the QUE_RING and ABORT/CLOSE IOCBs. For
  * the IOCBs with the completion callback function associated, the callback
  * function will be invoked with the status set to IOSTAT_LOCAL_REJECT and
  * un.ulpWord[4] set to IOERR_SLI_ABORTED. For IOCBs without the completion
  * callback function associated, the IOCB will simply be released. Finally,
  * it walks the ELS transmit completion queue to issue an abort IOCB to any
  * transmit completion queue IOCB that is not an IOCB from libdfc (i.e., the
  * management plane IOCBs that are not part of the discovery state machine)
  * out to HBA by invoking the lpfc_sli_issue_abort_iotag() routine.
  **/
 void
 lpfc_els_flush_all_cmd(struct lpfc_hba  *phba)
 {
     struct lpfc_vport *vport;
 
     spin_lock_irq(&phba->port_list_lock);
     list_for_each_entry(vport, &phba->port_list, listentry)
         lpfc_els_flush_cmd(vport);
     spin_unlock_irq(&phba->port_list_lock);
 
     return;
 }
 
 /**
  * lpfc_send_els_failure_event - Posts an ELS command failure event
  * @phba: Pointer to hba context object.
  * @cmdiocbp: Pointer to command iocb which reported error.
  * @rspiocbp: Pointer to response iocb which reported error.
  *
  * This function sends an event when there is an ELS command
  * failure.
  **/
 void
 lpfc_send_els_failure_event(struct lpfc_hba *phba,
             struct lpfc_iocbq *cmdiocbp,
             struct lpfc_iocbq *rspiocbp)
 {
     struct lpfc_vport *vport = cmdiocbp->vport;
     struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
     struct lpfc_lsrjt_event lsrjt_event;
     struct lpfc_fabric_event_header fabric_event;
     struct ls_rjt stat;
     struct lpfc_nodelist *ndlp;
     uint32_t *pcmd;
     u32 ulp_status, ulp_word4;
 
     ndlp = cmdiocbp->ndlp;
     if (!ndlp)
         return;
 
     ulp_status = get_job_ulpstatus(phba, rspiocbp);
     ulp_word4 = get_job_word4(phba, rspiocbp);
 
     if (ulp_status == IOSTAT_LS_RJT) {
         lsrjt_event.header.event_type = FC_REG_ELS_EVENT;
         lsrjt_event.header.subcategory = LPFC_EVENT_LSRJT_RCV;
         memcpy(lsrjt_event.header.wwpn, &ndlp->nlp_portname,
             sizeof(struct lpfc_name));
         memcpy(lsrjt_event.header.wwnn, &ndlp->nlp_nodename,
             sizeof(struct lpfc_name));
         pcmd = (uint32_t *)cmdiocbp->cmd_dmabuf->virt;
         lsrjt_event.command = (pcmd != NULL) ? *pcmd : 0;
         stat.un.ls_rjt_error_be = cpu_to_be32(ulp_word4);
         lsrjt_event.reason_code = stat.un.b.lsRjtRsnCode;
         lsrjt_event.explanation = stat.un.b.lsRjtRsnCodeExp;
         fc_host_post_vendor_event(shost,
             fc_get_event_number(),
             sizeof(lsrjt_event),
             (char *)&lsrjt_event,
             LPFC_NL_VENDOR_ID);
         return;
     }
     if (ulp_status == IOSTAT_NPORT_BSY ||
         ulp_status == IOSTAT_FABRIC_BSY) {
         fabric_event.event_type = FC_REG_FABRIC_EVENT;
         if (ulp_status == IOSTAT_NPORT_BSY)
             fabric_event.subcategory = LPFC_EVENT_PORT_BUSY;
         else
             fabric_event.subcategory = LPFC_EVENT_FABRIC_BUSY;
         memcpy(fabric_event.wwpn, &ndlp->nlp_portname,
             sizeof(struct lpfc_name));
         memcpy(fabric_event.wwnn, &ndlp->nlp_nodename,
             sizeof(struct lpfc_name));
         fc_host_post_vendor_event(shost,
             fc_get_event_number(),
             sizeof(fabric_event),
             (char *)&fabric_event,
             LPFC_NL_VENDOR_ID);
         return;
     }
 
 }
 
 /**
  * lpfc_send_els_event - Posts unsolicited els event
  * @vport: Pointer to vport object.
  * @ndlp: Pointer FC node object.
  * @payload: ELS command code type.
  *
  * This function posts an event when there is an incoming
  * unsolicited ELS command.
  **/
 static void
 lpfc_send_els_event(struct lpfc_vport *vport,
             struct lpfc_nodelist *ndlp,
             uint32_t *payload)
 {
     struct lpfc_els_event_header *els_data = NULL;
     struct lpfc_logo_event *logo_data = NULL;
     struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
 
     if (*payload == ELS_CMD_LOGO) {
         logo_data = kmalloc(sizeof(struct lpfc_logo_event), GFP_KERNEL);
         if (!logo_data) {
             lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
                 "0148 Failed to allocate memory "
                 "for LOGO event\n");
             return;
         }
         els_data = &logo_data->header;
     } else {
         els_data = kmalloc(sizeof(struct lpfc_els_event_header),
             GFP_KERNEL);
         if (!els_data) {
             lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
                 "0149 Failed to allocate memory "
                 "for ELS event\n");
             return;
         }
     }
     els_data->event_type = FC_REG_ELS_EVENT;
     switch (*payload) {
     case ELS_CMD_PLOGI:
         els_data->subcategory = LPFC_EVENT_PLOGI_RCV;
         break;
     case ELS_CMD_PRLO:
         els_data->subcategory = LPFC_EVENT_PRLO_RCV;
         break;
     case ELS_CMD_ADISC:
         els_data->subcategory = LPFC_EVENT_ADISC_RCV;
         break;
     case ELS_CMD_LOGO:
         els_data->subcategory = LPFC_EVENT_LOGO_RCV;
         /* Copy the WWPN in the LOGO payload */
         memcpy(logo_data->logo_wwpn, &payload[2],
             sizeof(struct lpfc_name));
         break;
     default:
         kfree(els_data);
         return;
     }
     memcpy(els_data->wwpn, &ndlp->nlp_portname, sizeof(struct lpfc_name));
     memcpy(els_data->wwnn, &ndlp->nlp_nodename, sizeof(struct lpfc_name));
     if (*payload == ELS_CMD_LOGO) {
         fc_host_post_vendor_event(shost,
             fc_get_event_number(),
             sizeof(struct lpfc_logo_event),
             (char *)logo_data,
             LPFC_NL_VENDOR_ID);
         kfree(logo_data);
     } else {
         fc_host_post_vendor_event(shost,
             fc_get_event_number(),
             sizeof(struct lpfc_els_event_header),
             (char *)els_data,
             LPFC_NL_VENDOR_ID);
         kfree(els_data);
     }
 
     return;
 }
 
 
 DECLARE_ENUM2STR_LOOKUP(lpfc_get_fpin_li_event_nm, fc_fpin_li_event_types,
             FC_FPIN_LI_EVT_TYPES_INIT);
 
 DECLARE_ENUM2STR_LOOKUP(lpfc_get_fpin_deli_event_nm, fc_fpin_deli_event_types,
             FC_FPIN_DELI_EVT_TYPES_INIT);
 
 DECLARE_ENUM2STR_LOOKUP(lpfc_get_fpin_congn_event_nm, fc_fpin_congn_event_types,
             FC_FPIN_CONGN_EVT_TYPES_INIT);
 
 DECLARE_ENUM2STR_LOOKUP(lpfc_get_fpin_congn_severity_nm,
             fc_fpin_congn_severity_types,
             FC_FPIN_CONGN_SEVERITY_INIT);
 
 
 /**
  * lpfc_display_fpin_wwpn - Display WWPNs accessible by the attached port
  * @phba: Pointer to phba object.
  * @wwnlist: Pointer to list of WWPNs in FPIN payload
  * @cnt: count of WWPNs in FPIN payload
  *
  * This routine is called by LI and PC descriptors.
  * Limit the number of WWPNs displayed to 6 log messages, 6 per log message
  */
 static void
 lpfc_display_fpin_wwpn(struct lpfc_hba *phba, __be64 *wwnlist, u32 cnt)
 {
     char buf[LPFC_FPIN_WWPN_LINE_SZ];
     __be64 wwn;
     u64 wwpn;
     int i, len;
     int line = 0;
     int wcnt = 0;
     bool endit = false;
 
     len = scnprintf(buf, LPFC_FPIN_WWPN_LINE_SZ, "Accessible WWPNs:");
     for (i = 0; i < cnt; i++) {
         /* Are we on the last WWPN */
         if (i == (cnt - 1))
             endit = true;
 
         /* Extract the next WWPN from the payload */
         wwn = *wwnlist++;
         wwpn = be64_to_cpu(wwn);
         len += scnprintf(buf + len, LPFC_FPIN_WWPN_LINE_SZ - len,
                  " %016llx", wwpn);
 
         /* Log a message if we are on the last WWPN
          * or if we hit the max allowed per message.
          */
         wcnt++;
         if (wcnt == LPFC_FPIN_WWPN_LINE_CNT || endit) {
             buf[len] = 0;
             lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
                     "4686 %s\n", buf);
 
             /* Check if we reached the last WWPN */
             if (endit)
                 return;
 
             /* Limit the number of log message displayed per FPIN */
             line++;
             if (line == LPFC_FPIN_WWPN_NUM_LINE) {
                 lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
                         "4687 %d WWPNs Truncated\n",
                         cnt - i - 1);
                 return;
             }
 
             /* Start over with next log message */
             wcnt = 0;
             len = scnprintf(buf, LPFC_FPIN_WWPN_LINE_SZ,
                     "Additional WWPNs:");
         }
     }
 }
 
 /**
  * lpfc_els_rcv_fpin_li - Process an FPIN Link Integrity Event.
  * @phba: Pointer to phba object.
  * @tlv:  Pointer to the Link Integrity Notification Descriptor.
  *
  * This function processes a Link Integrity FPIN event by logging a message.
  **/
 static void
 lpfc_els_rcv_fpin_li(struct lpfc_hba *phba, struct fc_tlv_desc *tlv)
 {
     struct fc_fn_li_desc *li = (struct fc_fn_li_desc *)tlv;
     const char *li_evt_str;
     u32 li_evt, cnt;
 
     li_evt = be16_to_cpu(li->event_type);
     li_evt_str = lpfc_get_fpin_li_event_nm(li_evt);
     cnt = be32_to_cpu(li->pname_count);
 
     lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
             "4680 FPIN Link Integrity %s (x%x) "
             "Detecting PN x%016llx Attached PN x%016llx "
             "Duration %d mSecs Count %d Port Cnt %d\n",
             li_evt_str, li_evt,
             be64_to_cpu(li->detecting_wwpn),
             be64_to_cpu(li->attached_wwpn),
             be32_to_cpu(li->event_threshold),
             be32_to_cpu(li->event_count), cnt);
 
     lpfc_display_fpin_wwpn(phba, (__be64 *)&li->pname_list, cnt);
 }
 
 /**
  * lpfc_els_rcv_fpin_del - Process an FPIN Delivery Event.
  * @phba: Pointer to hba object.
  * @tlv:  Pointer to the Delivery Notification Descriptor TLV
  *
  * This function processes a Delivery FPIN event by logging a message.
  **/
 static void
 lpfc_els_rcv_fpin_del(struct lpfc_hba *phba, struct fc_tlv_desc *tlv)
 {
     struct fc_fn_deli_desc *del = (struct fc_fn_deli_desc *)tlv;
     const char *del_rsn_str;
     u32 del_rsn;
     __be32 *frame;
 
     del_rsn = be16_to_cpu(del->deli_reason_code);
     del_rsn_str = lpfc_get_fpin_deli_event_nm(del_rsn);
 
     /* Skip over desc_tag/desc_len header to payload */
     frame = (__be32 *)(del + 1);
 
     lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
             "4681 FPIN Delivery %s (x%x) "
             "Detecting PN x%016llx Attached PN x%016llx "
             "DiscHdr0  x%08x "
             "DiscHdr1 x%08x DiscHdr2 x%08x DiscHdr3 x%08x "
             "DiscHdr4 x%08x DiscHdr5 x%08x\n",
             del_rsn_str, del_rsn,
             be64_to_cpu(del->detecting_wwpn),
             be64_to_cpu(del->attached_wwpn),
             be32_to_cpu(frame[0]),
             be32_to_cpu(frame[1]),
             be32_to_cpu(frame[2]),
             be32_to_cpu(frame[3]),
             be32_to_cpu(frame[4]),
             be32_to_cpu(frame[5]));
 }
 
 /**
  * lpfc_els_rcv_fpin_peer_cgn - Process a FPIN Peer Congestion Event.
  * @phba: Pointer to hba object.
  * @tlv:  Pointer to the Peer Congestion Notification Descriptor TLV
  *
  * This function processes a Peer Congestion FPIN event by logging a message.
  **/
 static void
 lpfc_els_rcv_fpin_peer_cgn(struct lpfc_hba *phba, struct fc_tlv_desc *tlv)
 {
     struct fc_fn_peer_congn_desc *pc = (struct fc_fn_peer_congn_desc *)tlv;
     const char *pc_evt_str;
     u32 pc_evt, cnt;
 
     pc_evt = be16_to_cpu(pc->event_type);
     pc_evt_str = lpfc_get_fpin_congn_event_nm(pc_evt);
     cnt = be32_to_cpu(pc->pname_count);
 
     lpfc_printf_log(phba, KERN_INFO, LOG_CGN_MGMT | LOG_ELS,
             "4684 FPIN Peer Congestion %s (x%x) "
             "Duration %d mSecs "
             "Detecting PN x%016llx Attached PN x%016llx "
             "Impacted Port Cnt %d\n",
             pc_evt_str, pc_evt,
             be32_to_cpu(pc->event_period),
             be64_to_cpu(pc->detecting_wwpn),
             be64_to_cpu(pc->attached_wwpn),
             cnt);
 
     lpfc_display_fpin_wwpn(phba, (__be64 *)&pc->pname_list, cnt);
 }
 
 /**
  * lpfc_els_rcv_fpin_cgn - Process an FPIN Congestion notification
  * @phba: Pointer to hba object.
  * @tlv:  Pointer to the Congestion Notification Descriptor TLV
  *
  * This function processes an FPIN Congestion Notifiction.  The notification
  * could be an Alarm or Warning.  This routine feeds that data into driver's
  * running congestion algorithm. It also processes the FPIN by
  * logging a message. It returns 1 to indicate deliver this message
  * to the upper layer or 0 to indicate don't deliver it.
  **/
 static int
 lpfc_els_rcv_fpin_cgn(struct lpfc_hba *phba, struct fc_tlv_desc *tlv)
 {
     struct lpfc_cgn_info *cp;
     struct fc_fn_congn_desc *cgn = (struct fc_fn_congn_desc *)tlv;
     const char *cgn_evt_str;
     u32 cgn_evt;
     const char *cgn_sev_str;
     u32 cgn_sev;
     uint16_t value;
     u32 crc;
     bool nm_log = false;
     int rc = 1;
 
     cgn_evt = be16_to_cpu(cgn->event_type);
     cgn_evt_str = lpfc_get_fpin_congn_event_nm(cgn_evt);
     cgn_sev = cgn->severity;
     cgn_sev_str = lpfc_get_fpin_congn_severity_nm(cgn_sev);
 
     /* The driver only takes action on a Credit Stall or Oversubscription
      * event type to engage the IO algorithm.  The driver prints an
      * unmaskable message only for Lost Credit and Credit Stall.
      * TODO: Still need to have definition of host action on clear,
      *       lost credit and device specific event types.
      */
     switch (cgn_evt) {
     case FPIN_CONGN_LOST_CREDIT:
         nm_log = true;
         break;
     case FPIN_CONGN_CREDIT_STALL:
         nm_log = true;
         fallthrough;
     case FPIN_CONGN_OVERSUBSCRIPTION:
         if (cgn_evt == FPIN_CONGN_OVERSUBSCRIPTION)
             nm_log = false;
         switch (cgn_sev) {
         case FPIN_CONGN_SEVERITY_ERROR:
             /* Take action here for an Alarm event */
             if (phba->cmf_active_mode != LPFC_CFG_OFF) {
                 if (phba->cgn_reg_fpin & LPFC_CGN_FPIN_ALARM) {
                     /* Track of alarm cnt for SYNC_WQE */
                     atomic_inc(&phba->cgn_sync_alarm_cnt);
                 }
                 /* Track alarm cnt for cgn_info regardless
                  * of whether CMF is configured for Signals
                  * or FPINs.
                  */
                 atomic_inc(&phba->cgn_fabric_alarm_cnt);
                 goto cleanup;
             }
             break;
         case FPIN_CONGN_SEVERITY_WARNING:
             /* Take action here for a Warning event */
             if (phba->cmf_active_mode != LPFC_CFG_OFF) {
                 if (phba->cgn_reg_fpin & LPFC_CGN_FPIN_WARN) {
                     /* Track of warning cnt for SYNC_WQE */
                     atomic_inc(&phba->cgn_sync_warn_cnt);
                 }
                 /* Track warning cnt and freq for cgn_info
                  * regardless of whether CMF is configured for
                  * Signals or FPINs.
                  */
                 atomic_inc(&phba->cgn_fabric_warn_cnt);
 cleanup:
                 /* Save frequency in ms */
                 phba->cgn_fpin_frequency =
                     be32_to_cpu(cgn->event_period);
                 value = phba->cgn_fpin_frequency;
                 if (phba->cgn_i) {
                     cp = (struct lpfc_cgn_info *)
                         phba->cgn_i->virt;
                     cp->cgn_alarm_freq =
                         cpu_to_le16(value);
                     cp->cgn_warn_freq =
                         cpu_to_le16(value);
                     crc = lpfc_cgn_calc_crc32
                         (cp,
                         LPFC_CGN_INFO_SZ,
                         LPFC_CGN_CRC32_SEED);
                     cp->cgn_info_crc = cpu_to_le32(crc);
                 }
 
                 /* Don't deliver to upper layer since
                  * driver took action on this tlv.
                  */
                 rc = 0;
             }
             break;
         }
         break;
     }
 
     /* Change the log level to unmaskable for the following event types. */
     lpfc_printf_log(phba, (nm_log ? KERN_WARNING : KERN_INFO),
             LOG_CGN_MGMT | LOG_ELS,
             "4683 FPIN CONGESTION %s type %s (x%x) Event "
             "Duration %d mSecs\n",
             cgn_sev_str, cgn_evt_str, cgn_evt,
             be32_to_cpu(cgn->event_period));
     return rc;
 }
 
 void
 lpfc_els_rcv_fpin(struct lpfc_vport *vport, void *p, u32 fpin_length)
 {
     struct lpfc_hba *phba = vport->phba;
     struct fc_els_fpin *fpin = (struct fc_els_fpin *)p;
     struct fc_tlv_desc *tlv, *first_tlv, *current_tlv;
     const char *dtag_nm;
     int desc_cnt = 0, bytes_remain, cnt;
     u32 dtag, deliver = 0;
     int len;
 
     /* FPINs handled only if we are in the right discovery state */
     if (vport->port_state < LPFC_DISC_AUTH)
         return;
 
     /* make sure there is the full fpin header */
     if (fpin_length < sizeof(struct fc_els_fpin))
         return;
 
     /* Sanity check descriptor length. The desc_len value does not
      * include space for the ELS command and the desc_len fields.
      */
     len = be32_to_cpu(fpin->desc_len);
     if (fpin_length < len + sizeof(struct fc_els_fpin)) {
         lpfc_printf_log(phba, KERN_WARNING, LOG_CGN_MGMT,
                 "4671 Bad ELS FPIN length %d: %d\n",
                 len, fpin_length);
         return;
     }
 
     tlv = (struct fc_tlv_desc *)&fpin->fpin_desc[0];
     first_tlv = tlv;
     bytes_remain = fpin_length - offsetof(struct fc_els_fpin, fpin_desc);
     bytes_remain = min_t(u32, bytes_remain, be32_to_cpu(fpin->desc_len));
 
     /* process each descriptor separately */
     while (bytes_remain >= FC_TLV_DESC_HDR_SZ &&
            bytes_remain >= FC_TLV_DESC_SZ_FROM_LENGTH(tlv)) {
         dtag = be32_to_cpu(tlv->desc_tag);
         switch (dtag) {
         case ELS_DTAG_LNK_INTEGRITY:
             lpfc_els_rcv_fpin_li(phba, tlv);
             deliver = 1;
             break;
         case ELS_DTAG_DELIVERY:
             lpfc_els_rcv_fpin_del(phba, tlv);
             deliver = 1;
             break;
         case ELS_DTAG_PEER_CONGEST:
             lpfc_els_rcv_fpin_peer_cgn(phba, tlv);
             deliver = 1;
             break;
         case ELS_DTAG_CONGESTION:
             deliver = lpfc_els_rcv_fpin_cgn(phba, tlv);
             break;
         default:
             dtag_nm = lpfc_get_tlv_dtag_nm(dtag);
             lpfc_printf_log(phba, KERN_WARNING, LOG_CGN_MGMT,
                     "4678 unknown FPIN descriptor[%d]: "
                     "tag x%x (%s)\n",
                     desc_cnt, dtag, dtag_nm);
 
             /* If descriptor is bad, drop the rest of the data */
             return;
         }
         lpfc_cgn_update_stat(phba, dtag);
         cnt = be32_to_cpu(tlv->desc_len);
 
         /* Sanity check descriptor length. The desc_len value does not
          * include space for the desc_tag and the desc_len fields.
          */
         len -= (cnt + sizeof(struct fc_tlv_desc));
         if (len < 0) {
             dtag_nm = lpfc_get_tlv_dtag_nm(dtag);
             lpfc_printf_log(phba, KERN_WARNING, LOG_CGN_MGMT,
                     "4672 Bad FPIN descriptor TLV length "
                     "%d: %d %d %s\n",
                     cnt, len, fpin_length, dtag_nm);
             return;
         }
 
         current_tlv = tlv;
         bytes_remain -= FC_TLV_DESC_SZ_FROM_LENGTH(tlv);
         tlv = fc_tlv_next_desc(tlv);
 
         /* Format payload such that the FPIN delivered to the
          * upper layer is a single descriptor FPIN.
          */
         if (desc_cnt)
             memcpy(first_tlv, current_tlv,
                    (cnt + sizeof(struct fc_els_fpin)));
 
         /* Adjust the length so that it only reflects a
          * single descriptor FPIN.
          */
         fpin_length = cnt + sizeof(struct fc_els_fpin);
         fpin->desc_len = cpu_to_be32(fpin_length);
         fpin_length += sizeof(struct fc_els_fpin); /* the entire FPIN */
 
         /* Send every descriptor individually to the upper layer */
         if (deliver)
             fc_host_fpin_rcv(lpfc_shost_from_vport(vport),
                      fpin_length, (char *)fpin);
         desc_cnt++;
     }
 }
 
 /**
  * lpfc_els_unsol_buffer - Process an unsolicited event data buffer
  * @phba: pointer to lpfc hba data structure.
  * @pring: pointer to a SLI ring.
  * @vport: pointer to a host virtual N_Port data structure.
  * @elsiocb: pointer to lpfc els command iocb data structure.
  *
  * This routine is used for processing the IOCB associated with a unsolicited
  * event. It first determines whether there is an existing ndlp that matches
  * the DID from the unsolicited IOCB. If not, it will create a new one with
  * the DID from the unsolicited IOCB. The ELS command from the unsolicited
  * IOCB is then used to invoke the proper routine and to set up proper state
  * of the discovery state machine.
  **/
 static void
 lpfc_els_unsol_buffer(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
               struct lpfc_vport *vport, struct lpfc_iocbq *elsiocb)
 {
     struct lpfc_nodelist *ndlp;
     struct ls_rjt stat;
     u32 *payload, payload_len;
     u32 cmd = 0, did = 0, newnode, status = 0;
     uint8_t rjt_exp, rjt_err = 0, init_link = 0;
     struct lpfc_wcqe_complete *wcqe_cmpl = NULL;
     LPFC_MBOXQ_t *mbox;
 
     if (!vport || !elsiocb->cmd_dmabuf)
         goto dropit;
 
     newnode = 0;
     wcqe_cmpl = &elsiocb->wcqe_cmpl;
     payload = elsiocb->cmd_dmabuf->virt;
     if (phba->sli_rev == LPFC_SLI_REV4)
         payload_len = wcqe_cmpl->total_data_placed;
     else
         payload_len = elsiocb->iocb.unsli3.rcvsli3.acc_len;
     status = get_job_ulpstatus(phba, elsiocb);
     cmd = *payload;
     if ((phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) == 0)
         lpfc_sli3_post_buffer(phba, pring, 1);
 
     did = get_job_els_rsp64_did(phba, elsiocb);
     if (status) {
         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
             "RCV Unsol ELS:  status:x%x/x%x did:x%x",
             status, get_job_word4(phba, elsiocb), did);
         goto dropit;
     }
 
     /* Check to see if link went down during discovery */
     if (lpfc_els_chk_latt(vport))
         goto dropit;
 
     /* Ignore traffic received during vport shutdown. */
     if (vport->load_flag & FC_UNLOADING)
         goto dropit;
 
     /* If NPort discovery is delayed drop incoming ELS */
     if ((vport->fc_flag & FC_DISC_DELAYED) &&
             (cmd != ELS_CMD_PLOGI))
         goto dropit;
 
     ndlp = lpfc_findnode_did(vport, did);
     if (!ndlp) {
         /* Cannot find existing Fabric ndlp, so allocate a new one */
         ndlp = lpfc_nlp_init(vport, did);
         if (!ndlp)
             goto dropit;
         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
         newnode = 1;
         if ((did & Fabric_DID_MASK) == Fabric_DID_MASK)
             ndlp->nlp_type |= NLP_FABRIC;
     } else if (ndlp->nlp_state == NLP_STE_UNUSED_NODE) {
         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
         newnode = 1;
     }
 
     phba->fc_stat.elsRcvFrame++;
 
     /*
      * Do not process any unsolicited ELS commands
      * if the ndlp is in DEV_LOSS
      */
     spin_lock_irq(&ndlp->lock);
     if (ndlp->nlp_flag & NLP_IN_DEV_LOSS) {
         spin_unlock_irq(&ndlp->lock);
         if (newnode)
             lpfc_nlp_put(ndlp);
         goto dropit;
     }
     spin_unlock_irq(&ndlp->lock);
 
     elsiocb->ndlp = lpfc_nlp_get(ndlp);
     if (!elsiocb->ndlp)
         goto dropit;
     elsiocb->vport = vport;
 
     if ((cmd & ELS_CMD_MASK) == ELS_CMD_RSCN) {
         cmd &= ELS_CMD_MASK;
     }
     /* ELS command <elsCmd> received from NPORT <did> */
     lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
              "0112 ELS command x%x received from NPORT x%x "
              "refcnt %d Data: x%x x%x x%x x%x\n",
              cmd, did, kref_read(&ndlp->kref), vport->port_state,
              vport->fc_flag, vport->fc_myDID, vport->fc_prevDID);
 
     /* reject till our FLOGI completes or PLOGI assigned DID via PT2PT */
     if ((vport->port_state < LPFC_FABRIC_CFG_LINK) &&
         (cmd != ELS_CMD_FLOGI) &&
         !((cmd == ELS_CMD_PLOGI) && (vport->fc_flag & FC_PT2PT))) {
         rjt_err = LSRJT_LOGICAL_BSY;
         rjt_exp = LSEXP_NOTHING_MORE;
         goto lsrjt;
     }
 
     switch (cmd) {
     case ELS_CMD_PLOGI:
         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
             "RCV PLOGI:       did:x%x/ste:x%x flg:x%x",
             did, vport->port_state, ndlp->nlp_flag);
 
         phba->fc_stat.elsRcvPLOGI++;
         ndlp = lpfc_plogi_confirm_nport(phba, payload, ndlp);
         if (phba->sli_rev == LPFC_SLI_REV4 &&
             (phba->pport->fc_flag & FC_PT2PT)) {
             vport->fc_prevDID = vport->fc_myDID;
             /* Our DID needs to be updated before registering
              * the vfi. This is done in lpfc_rcv_plogi but
              * that is called after the reg_vfi.
              */
             vport->fc_myDID =
                 bf_get(els_rsp64_sid,
                        &elsiocb->wqe.xmit_els_rsp);
             lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
                      "3312 Remote port assigned DID x%x "
                      "%x\n", vport->fc_myDID,
                      vport->fc_prevDID);
         }
 
         lpfc_send_els_event(vport, ndlp, payload);
 
         /* If Nport discovery is delayed, reject PLOGIs */
         if (vport->fc_flag & FC_DISC_DELAYED) {
             rjt_err = LSRJT_UNABLE_TPC;
             rjt_exp = LSEXP_NOTHING_MORE;
             break;
         }
 
         if (vport->port_state < LPFC_DISC_AUTH) {
             if (!(phba->pport->fc_flag & FC_PT2PT) ||
                 (phba->pport->fc_flag & FC_PT2PT_PLOGI)) {
                 rjt_err = LSRJT_UNABLE_TPC;
                 rjt_exp = LSEXP_NOTHING_MORE;
                 break;
             }
         }
 
         spin_lock_irq(&ndlp->lock);
         ndlp->nlp_flag &= ~NLP_TARGET_REMOVE;
         spin_unlock_irq(&ndlp->lock);
 
         lpfc_disc_state_machine(vport, ndlp, elsiocb,
                     NLP_EVT_RCV_PLOGI);
 
         break;
     case ELS_CMD_FLOGI:
         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
             "RCV FLOGI:       did:x%x/ste:x%x flg:x%x",
             did, vport->port_state, ndlp->nlp_flag);
 
         phba->fc_stat.elsRcvFLOGI++;
 
         /* If the driver believes fabric discovery is done and is ready,
          * bounce the link.  There is some descrepancy.
          */
         if (vport->port_state >= LPFC_LOCAL_CFG_LINK &&
             vport->fc_flag & FC_PT2PT &&
             vport->rcv_flogi_cnt >= 1) {
             rjt_err = LSRJT_LOGICAL_BSY;
             rjt_exp = LSEXP_NOTHING_MORE;
             init_link++;
             goto lsrjt;
         }
 
         lpfc_els_rcv_flogi(vport, elsiocb, ndlp);
         /* retain node if our response is deferred */
         if (phba->defer_flogi_acc_flag)
             break;
         if (newnode)
             lpfc_disc_state_machine(vport, ndlp, NULL,
                     NLP_EVT_DEVICE_RM);
         break;
     case ELS_CMD_LOGO:
         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
             "RCV LOGO:        did:x%x/ste:x%x flg:x%x",
             did, vport->port_state, ndlp->nlp_flag);
 
         phba->fc_stat.elsRcvLOGO++;
         lpfc_send_els_event(vport, ndlp, payload);
         if (vport->port_state < LPFC_DISC_AUTH) {
             rjt_err = LSRJT_UNABLE_TPC;
             rjt_exp = LSEXP_NOTHING_MORE;
             break;
         }
         lpfc_disc_state_machine(vport, ndlp, elsiocb, NLP_EVT_RCV_LOGO);
         if (newnode)
             lpfc_disc_state_machine(vport, ndlp, NULL,
                     NLP_EVT_DEVICE_RM);
         break;
     case ELS_CMD_PRLO:
         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
             "RCV PRLO:        did:x%x/ste:x%x flg:x%x",
             did, vport->port_state, ndlp->nlp_flag);
 
         phba->fc_stat.elsRcvPRLO++;
         lpfc_send_els_event(vport, ndlp, payload);
         if (vport->port_state < LPFC_DISC_AUTH) {
             rjt_err = LSRJT_UNABLE_TPC;
             rjt_exp = LSEXP_NOTHING_MORE;
             break;
         }
         lpfc_disc_state_machine(vport, ndlp, elsiocb, NLP_EVT_RCV_PRLO);
         break;
     case ELS_CMD_LCB:
         phba->fc_stat.elsRcvLCB++;
         lpfc_els_rcv_lcb(vport, elsiocb, ndlp);
         break;
     case ELS_CMD_RDP:
         phba->fc_stat.elsRcvRDP++;
         lpfc_els_rcv_rdp(vport, elsiocb, ndlp);
         break;
     case ELS_CMD_RSCN:
         phba->fc_stat.elsRcvRSCN++;
         lpfc_els_rcv_rscn(vport, elsiocb, ndlp);
         if (newnode)
             lpfc_disc_state_machine(vport, ndlp, NULL,
                     NLP_EVT_DEVICE_RM);
         break;
     case ELS_CMD_ADISC:
         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
             "RCV ADISC:       did:x%x/ste:x%x flg:x%x",
             did, vport->port_state, ndlp->nlp_flag);
 
         lpfc_send_els_event(vport, ndlp, payload);
         phba->fc_stat.elsRcvADISC++;
         if (vport->port_state < LPFC_DISC_AUTH) {
             rjt_err = LSRJT_UNABLE_TPC;
             rjt_exp = LSEXP_NOTHING_MORE;
             break;
         }
         lpfc_disc_state_machine(vport, ndlp, elsiocb,
                     NLP_EVT_RCV_ADISC);
         break;
     case ELS_CMD_PDISC:
         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
             "RCV PDISC:       did:x%x/ste:x%x flg:x%x",
             did, vport->port_state, ndlp->nlp_flag);
 
         phba->fc_stat.elsRcvPDISC++;
         if (vport->port_state < LPFC_DISC_AUTH) {
             rjt_err = LSRJT_UNABLE_TPC;
             rjt_exp = LSEXP_NOTHING_MORE;
             break;
         }
         lpfc_disc_state_machine(vport, ndlp, elsiocb,
                     NLP_EVT_RCV_PDISC);
         break;
     case ELS_CMD_FARPR:
         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
             "RCV FARPR:       did:x%x/ste:x%x flg:x%x",
             did, vport->port_state, ndlp->nlp_flag);
 
         phba->fc_stat.elsRcvFARPR++;
         lpfc_els_rcv_farpr(vport, elsiocb, ndlp);
         break;
     case ELS_CMD_FARP:
         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
             "RCV FARP:        did:x%x/ste:x%x flg:x%x",
             did, vport->port_state, ndlp->nlp_flag);
 
         phba->fc_stat.elsRcvFARP++;
         lpfc_els_rcv_farp(vport, elsiocb, ndlp);
         break;
     case ELS_CMD_FAN:
         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
             "RCV FAN:         did:x%x/ste:x%x flg:x%x",
             did, vport->port_state, ndlp->nlp_flag);
 
         phba->fc_stat.elsRcvFAN++;
         lpfc_els_rcv_fan(vport, elsiocb, ndlp);
         break;
     case ELS_CMD_PRLI:
     case ELS_CMD_NVMEPRLI:
         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
             "RCV PRLI:        did:x%x/ste:x%x flg:x%x",
             did, vport->port_state, ndlp->nlp_flag);
 
         phba->fc_stat.elsRcvPRLI++;
         if ((vport->port_state < LPFC_DISC_AUTH) &&
             (vport->fc_flag & FC_FABRIC)) {
             rjt_err = LSRJT_UNABLE_TPC;
             rjt_exp = LSEXP_NOTHING_MORE;
             break;
         }
         lpfc_disc_state_machine(vport, ndlp, elsiocb, NLP_EVT_RCV_PRLI);
         break;
     case ELS_CMD_LIRR:
         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
             "RCV LIRR:        did:x%x/ste:x%x flg:x%x",
             did, vport->port_state, ndlp->nlp_flag);
 
         phba->fc_stat.elsRcvLIRR++;
         lpfc_els_rcv_lirr(vport, elsiocb, ndlp);
         if (newnode)
             lpfc_disc_state_machine(vport, ndlp, NULL,
                     NLP_EVT_DEVICE_RM);
         break;
     case ELS_CMD_RLS:
         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
             "RCV RLS:         did:x%x/ste:x%x flg:x%x",
             did, vport->port_state, ndlp->nlp_flag);
 
         phba->fc_stat.elsRcvRLS++;
         lpfc_els_rcv_rls(vport, elsiocb, ndlp);
         if (newnode)
             lpfc_disc_state_machine(vport, ndlp, NULL,
                     NLP_EVT_DEVICE_RM);
         break;
     case ELS_CMD_RPL:
         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
             "RCV RPL:         did:x%x/ste:x%x flg:x%x",
             did, vport->port_state, ndlp->nlp_flag);
 
         phba->fc_stat.elsRcvRPL++;
         lpfc_els_rcv_rpl(vport, elsiocb, ndlp);
         if (newnode)
             lpfc_disc_state_machine(vport, ndlp, NULL,
                     NLP_EVT_DEVICE_RM);
         break;
     case ELS_CMD_RNID:
         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
             "RCV RNID:        did:x%x/ste:x%x flg:x%x",
             did, vport->port_state, ndlp->nlp_flag);
 
         phba->fc_stat.elsRcvRNID++;
         lpfc_els_rcv_rnid(vport, elsiocb, ndlp);
         if (newnode)
             lpfc_disc_state_machine(vport, ndlp, NULL,
                     NLP_EVT_DEVICE_RM);
         break;
     case ELS_CMD_RTV:
         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
             "RCV RTV:        did:x%x/ste:x%x flg:x%x",
             did, vport->port_state, ndlp->nlp_flag);
         phba->fc_stat.elsRcvRTV++;
         lpfc_els_rcv_rtv(vport, elsiocb, ndlp);
         if (newnode)
             lpfc_disc_state_machine(vport, ndlp, NULL,
                     NLP_EVT_DEVICE_RM);
         break;
     case ELS_CMD_RRQ:
         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
             "RCV RRQ:         did:x%x/ste:x%x flg:x%x",
             did, vport->port_state, ndlp->nlp_flag);
 
         phba->fc_stat.elsRcvRRQ++;
         lpfc_els_rcv_rrq(vport, elsiocb, ndlp);
         if (newnode)
             lpfc_disc_state_machine(vport, ndlp, NULL,
                     NLP_EVT_DEVICE_RM);
         break;
     case ELS_CMD_ECHO:
         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
             "RCV ECHO:        did:x%x/ste:x%x flg:x%x",
             did, vport->port_state, ndlp->nlp_flag);
 
         phba->fc_stat.elsRcvECHO++;
         lpfc_els_rcv_echo(vport, elsiocb, ndlp);
         if (newnode)
             lpfc_disc_state_machine(vport, ndlp, NULL,
                     NLP_EVT_DEVICE_RM);
         break;
     case ELS_CMD_REC:
         /* receive this due to exchange closed */
         rjt_err = LSRJT_UNABLE_TPC;
         rjt_exp = LSEXP_INVALID_OX_RX;
         break;
     case ELS_CMD_FPIN:
         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
                       "RCV FPIN:       did:x%x/ste:x%x flg:x%x",
                       did, vport->port_state, ndlp->nlp_flag);
 
         lpfc_els_rcv_fpin(vport, (struct fc_els_fpin *)payload,
                   payload_len);
 
         /* There are no replies, so no rjt codes */
         break;
     case ELS_CMD_EDC:
         lpfc_els_rcv_edc(vport, elsiocb, ndlp);
         break;
     case ELS_CMD_RDF:
         phba->fc_stat.elsRcvRDF++;
         /* Accept RDF only from fabric controller */
         if (did != Fabric_Cntl_DID) {
             lpfc_printf_vlog(vport, KERN_WARNING, LOG_ELS,
                      "1115 Received RDF from invalid DID "
                      "x%x\n", did);
             rjt_err = LSRJT_PROTOCOL_ERR;
             rjt_exp = LSEXP_NOTHING_MORE;
             goto lsrjt;
         }
 
         lpfc_els_rcv_rdf(vport, elsiocb, ndlp);
         break;
     default:
         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
             "RCV ELS cmd:     cmd:x%x did:x%x/ste:x%x",
             cmd, did, vport->port_state);
 
         /* Unsupported ELS command, reject */
         rjt_err = LSRJT_CMD_UNSUPPORTED;
         rjt_exp = LSEXP_NOTHING_MORE;
 
         /* Unknown ELS command <elsCmd> received from NPORT <did> */
         lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
                  "0115 Unknown ELS command x%x "
                  "received from NPORT x%x\n", cmd, did);
         if (newnode)
             lpfc_disc_state_machine(vport, ndlp, NULL,
                     NLP_EVT_DEVICE_RM);
         break;
     }
 
 lsrjt:
     /* check if need to LS_RJT received ELS cmd */
     if (rjt_err) {
         memset(&stat, 0, sizeof(stat));
         stat.un.b.lsRjtRsnCode = rjt_err;
         stat.un.b.lsRjtRsnCodeExp = rjt_exp;
         lpfc_els_rsp_reject(vport, stat.un.lsRjtError, elsiocb, ndlp,
                     NULL);
         /* Remove the reference from above for new nodes. */
         if (newnode)
             lpfc_disc_state_machine(vport, ndlp, NULL,
                     NLP_EVT_DEVICE_RM);
     }
 
     /* Release the reference on this elsiocb, not the ndlp. */
     lpfc_nlp_put(elsiocb->ndlp);
     elsiocb->ndlp = NULL;
 
     /* Special case.  Driver received an unsolicited command that
      * unsupportable given the driver's current state.  Reset the
      * link and start over.
      */
     if (init_link) {
         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
         if (!mbox)
             return;
         lpfc_linkdown(phba);
         lpfc_init_link(phba, mbox,
                    phba->cfg_topology,
                    phba->cfg_link_speed);
         mbox->u.mb.un.varInitLnk.lipsr_AL_PA = 0;
         mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
         mbox->vport = vport;
         if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT) ==
             MBX_NOT_FINISHED)
             mempool_free(mbox, phba->mbox_mem_pool);
     }
 
     return;
 
 dropit:
     if (vport && !(vport->load_flag & FC_UNLOADING))
         lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
             "0111 Dropping received ELS cmd "
             "Data: x%x x%x x%x x%x\n",
             cmd, status, get_job_word4(phba, elsiocb), did);
 
     phba->fc_stat.elsRcvDrop++;
 }
 
 /**
  * lpfc_els_unsol_event - Process an unsolicited event from an els sli ring
  * @phba: pointer to lpfc hba data structure.
  * @pring: pointer to a SLI ring.
  * @elsiocb: pointer to lpfc els iocb data structure.
  *
  * This routine is used to process an unsolicited event received from a SLI
  * (Service Level Interface) ring. The actual processing of the data buffer
  * associated with the unsolicited event is done by invoking the routine
  * lpfc_els_unsol_buffer() after properly set up the iocb buffer from the
  * SLI ring on which the unsolicited event was received.
  **/
 void
 lpfc_els_unsol_event(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
              struct lpfc_iocbq *elsiocb)
 {
     struct lpfc_vport *vport = elsiocb->vport;
     u32 ulp_command, status, parameter, bde_count = 0;
     IOCB_t *icmd;
     struct lpfc_wcqe_complete *wcqe_cmpl = NULL;
     struct lpfc_dmabuf *bdeBuf1 = elsiocb->cmd_dmabuf;
     struct lpfc_dmabuf *bdeBuf2 = elsiocb->bpl_dmabuf;
     dma_addr_t paddr;
 
     elsiocb->cmd_dmabuf = NULL;
     elsiocb->rsp_dmabuf = NULL;
     elsiocb->bpl_dmabuf = NULL;
 
     wcqe_cmpl = &elsiocb->wcqe_cmpl;
     ulp_command = get_job_cmnd(phba, elsiocb);
     status = get_job_ulpstatus(phba, elsiocb);
     parameter = get_job_word4(phba, elsiocb);
     if (phba->sli_rev == LPFC_SLI_REV4)
         bde_count = wcqe_cmpl->word3;
     else
         bde_count = elsiocb->iocb.ulpBdeCount;
 
     if (status == IOSTAT_NEED_BUFFER) {
         lpfc_sli_hbqbuf_add_hbqs(phba, LPFC_ELS_HBQ);
     } else if (status == IOSTAT_LOCAL_REJECT &&
            (parameter & IOERR_PARAM_MASK) ==
            IOERR_RCV_BUFFER_WAITING) {
         phba->fc_stat.NoRcvBuf++;
         /* Not enough posted buffers; Try posting more buffers */
         if (!(phba->sli3_options & LPFC_SLI3_HBQ_ENABLED))
             lpfc_sli3_post_buffer(phba, pring, 0);
         return;
     }
 
     if (phba->sli_rev == LPFC_SLI_REV3) {
         icmd = &elsiocb->iocb;
         if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
             (ulp_command == CMD_IOCB_RCV_ELS64_CX ||
              ulp_command == CMD_IOCB_RCV_SEQ64_CX)) {
             if (icmd->unsli3.rcvsli3.vpi == 0xffff)
                 vport = phba->pport;
             else
                 vport = lpfc_find_vport_by_vpid(phba,
                         icmd->unsli3.rcvsli3.vpi);
         }
     }
 
     /* If there are no BDEs associated
      * with this IOCB, there is nothing to do.
      */
     if (bde_count == 0)
         return;
 
     /* Account for SLI2 or SLI3 and later unsolicited buffering */
     if (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) {
         elsiocb->cmd_dmabuf = bdeBuf1;
         if (bde_count == 2)
             elsiocb->bpl_dmabuf = bdeBuf2;
     } else {
         icmd = &elsiocb->iocb;
         paddr = getPaddr(icmd->un.cont64[0].addrHigh,
                  icmd->un.cont64[0].addrLow);
         elsiocb->cmd_dmabuf = lpfc_sli_ringpostbuf_get(phba, pring,
                                    paddr);
         if (bde_count == 2) {
             paddr = getPaddr(icmd->un.cont64[1].addrHigh,
                      icmd->un.cont64[1].addrLow);
             elsiocb->bpl_dmabuf = lpfc_sli_ringpostbuf_get(phba,
                                     pring,
                                     paddr);
         }
     }
 
     lpfc_els_unsol_buffer(phba, pring, vport, elsiocb);
     /*
      * The different unsolicited event handlers would tell us
      * if they are done with "mp" by setting cmd_dmabuf to NULL.
      */
     if (elsiocb->cmd_dmabuf) {
         lpfc_in_buf_free(phba, elsiocb->cmd_dmabuf);
         elsiocb->cmd_dmabuf = NULL;
     }
 
     if (elsiocb->bpl_dmabuf) {
         lpfc_in_buf_free(phba, elsiocb->bpl_dmabuf);
         elsiocb->bpl_dmabuf = NULL;
     }
 
 }
 
 static void
 lpfc_start_fdmi(struct lpfc_vport *vport)
 {
     struct lpfc_nodelist *ndlp;
 
     /* If this is the first time, allocate an ndlp and initialize
      * it. Otherwise, make sure the node is enabled and then do the
      * login.
      */
     ndlp = lpfc_findnode_did(vport, FDMI_DID);
     if (!ndlp) {
         ndlp = lpfc_nlp_init(vport, FDMI_DID);
         if (ndlp) {
             ndlp->nlp_type |= NLP_FABRIC;
         } else {
             return;
         }
     }
 
     lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
     lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
 }
 
 /**
  * lpfc_do_scr_ns_plogi - Issue a plogi to the name server for scr
  * @phba: pointer to lpfc hba data structure.
  * @vport: pointer to a virtual N_Port data structure.
  *
  * This routine issues a Port Login (PLOGI) to the Name Server with
  * State Change Request (SCR) for a @vport. This routine will create an
  * ndlp for the Name Server associated to the @vport if such node does
  * not already exist. The PLOGI to Name Server is issued by invoking the
  * lpfc_issue_els_plogi() routine. If Fabric-Device Management Interface
  * (FDMI) is configured to the @vport, a FDMI node will be created and
  * the PLOGI to FDMI is issued by invoking lpfc_issue_els_plogi() routine.
  **/
 void
 lpfc_do_scr_ns_plogi(struct lpfc_hba *phba, struct lpfc_vport *vport)
 {
     struct lpfc_nodelist *ndlp;
     struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
 
     /*
      * If lpfc_delay_discovery parameter is set and the clean address
      * bit is cleared and fc fabric parameters chenged, delay FC NPort
      * discovery.
      */
     spin_lock_irq(shost->host_lock);
     if (vport->fc_flag & FC_DISC_DELAYED) {
         spin_unlock_irq(shost->host_lock);
         lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
                  "3334 Delay fc port discovery for %d secs\n",
                  phba->fc_ratov);
         mod_timer(&vport->delayed_disc_tmo,
             jiffies + msecs_to_jiffies(1000 * phba->fc_ratov));
         return;
     }
     spin_unlock_irq(shost->host_lock);
 
     ndlp = lpfc_findnode_did(vport, NameServer_DID);
     if (!ndlp) {
         ndlp = lpfc_nlp_init(vport, NameServer_DID);
         if (!ndlp) {
             if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
                 lpfc_disc_start(vport);
                 return;
             }
             lpfc_vport_set_state(vport, FC_VPORT_FAILED);
             lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
                      "0251 NameServer login: no memory\n");
             return;
         }
     }
 
     ndlp->nlp_type |= NLP_FABRIC;
 
     lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
 
     if (lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0)) {
         lpfc_vport_set_state(vport, FC_VPORT_FAILED);
         lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
                  "0252 Cannot issue NameServer login\n");
         return;
     }
 
     if ((phba->cfg_enable_SmartSAN ||
          (phba->cfg_fdmi_on == LPFC_FDMI_SUPPORT)) &&
          (vport->load_flag & FC_ALLOW_FDMI))
         lpfc_start_fdmi(vport);
 }
 
 /**
  * lpfc_cmpl_reg_new_vport - Completion callback function to register new vport
  * @phba: pointer to lpfc hba data structure.
  * @pmb: pointer to the driver internal queue element for mailbox command.
  *
  * This routine is the completion callback function to register new vport
  * mailbox command. If the new vport mailbox command completes successfully,
  * the fabric registration login shall be performed on physical port (the
  * new vport created is actually a physical port, with VPI 0) or the port
  * login to Name Server for State Change Request (SCR) will be performed
  * on virtual port (real virtual port, with VPI greater than 0).
  **/
 static void
 lpfc_cmpl_reg_new_vport(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
 {
     struct lpfc_vport *vport = pmb->vport;
     struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
     struct lpfc_nodelist *ndlp = pmb->ctx_ndlp;
     MAILBOX_t *mb = &pmb->u.mb;
     int rc;
 
     spin_lock_irq(shost->host_lock);
     vport->fc_flag &= ~FC_VPORT_NEEDS_REG_VPI;
     spin_unlock_irq(shost->host_lock);
 
     if (mb->mbxStatus) {
         lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
                 "0915 Register VPI failed : Status: x%x"
                 " upd bit: x%x \n", mb->mbxStatus,
                  mb->un.varRegVpi.upd);
         if (phba->sli_rev == LPFC_SLI_REV4 &&
             mb->un.varRegVpi.upd)
             goto mbox_err_exit ;
 
         switch (mb->mbxStatus) {
         case 0x11:  /* unsupported feature */
         case 0x9603:    /* max_vpi exceeded */
         case 0x9602:    /* Link event since CLEAR_LA */
             /* giving up on vport registration */
             lpfc_vport_set_state(vport, FC_VPORT_FAILED);
             spin_lock_irq(shost->host_lock);
             vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
             spin_unlock_irq(shost->host_lock);
             lpfc_can_disctmo(vport);
             break;
         /* If reg_vpi fail with invalid VPI status, re-init VPI */
         case 0x20:
             spin_lock_irq(shost->host_lock);
             vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
             spin_unlock_irq(shost->host_lock);
             lpfc_init_vpi(phba, pmb, vport->vpi);
             pmb->vport = vport;
             pmb->mbox_cmpl = lpfc_init_vpi_cmpl;
             rc = lpfc_sli_issue_mbox(phba, pmb,
                 MBX_NOWAIT);
             if (rc == MBX_NOT_FINISHED) {
                 lpfc_printf_vlog(vport, KERN_ERR,
                          LOG_TRACE_EVENT,
                     "2732 Failed to issue INIT_VPI"
                     " mailbox command\n");
             } else {
                 lpfc_nlp_put(ndlp);
                 return;
             }
             fallthrough;
         default:
             /* Try to recover from this error */
             if (phba->sli_rev == LPFC_SLI_REV4)
                 lpfc_sli4_unreg_all_rpis(vport);
             lpfc_mbx_unreg_vpi(vport);
             spin_lock_irq(shost->host_lock);
             vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
             spin_unlock_irq(shost->host_lock);
             if (mb->mbxStatus == MBX_NOT_FINISHED)
                 break;
             if ((vport->port_type == LPFC_PHYSICAL_PORT) &&
                 !(vport->fc_flag & FC_LOGO_RCVD_DID_CHNG)) {
                 if (phba->sli_rev == LPFC_SLI_REV4)
                     lpfc_issue_init_vfi(vport);
                 else
                     lpfc_initial_flogi(vport);
             } else {
                 lpfc_initial_fdisc(vport);
             }
             break;
         }
     } else {
         spin_lock_irq(shost->host_lock);
         vport->vpi_state |= LPFC_VPI_REGISTERED;
         spin_unlock_irq(shost->host_lock);
         if (vport == phba->pport) {
             if (phba->sli_rev < LPFC_SLI_REV4)
                 lpfc_issue_fabric_reglogin(vport);
             else {
                 /*
                  * If the physical port is instantiated using
                  * FDISC, do not start vport discovery.
                  */
                 if (vport->port_state != LPFC_FDISC)
                     lpfc_start_fdiscs(phba);
                 lpfc_do_scr_ns_plogi(phba, vport);
             }
         } else {
             lpfc_do_scr_ns_plogi(phba, vport);
         }
     }
 mbox_err_exit:
     /* Now, we decrement the ndlp reference count held for this
      * callback function
      */
     lpfc_nlp_put(ndlp);
 
     mempool_free(pmb, phba->mbox_mem_pool);
     return;
 }
 
 /**
  * lpfc_register_new_vport - Register a new vport with a HBA
  * @phba: pointer to lpfc hba data structure.
  * @vport: pointer to a host virtual N_Port data structure.
  * @ndlp: pointer to a node-list data structure.
  *
  * This routine registers the @vport as a new virtual port with a HBA.
  * It is done through a registering vpi mailbox command.
  **/
 void
 lpfc_register_new_vport(struct lpfc_hba *phba, struct lpfc_vport *vport,
             struct lpfc_nodelist *ndlp)
 {
     struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
     LPFC_MBOXQ_t *mbox;
 
     mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
     if (mbox) {
         lpfc_reg_vpi(vport, mbox);
         mbox->vport = vport;
         mbox->ctx_ndlp = lpfc_nlp_get(ndlp);
         if (!mbox->ctx_ndlp) {
             mempool_free(mbox, phba->mbox_mem_pool);
             goto mbox_err_exit;
         }
 
         mbox->mbox_cmpl = lpfc_cmpl_reg_new_vport;
         if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT)
             == MBX_NOT_FINISHED) {
             /* mailbox command not success, decrement ndlp
              * reference count for this command
              */
             lpfc_nlp_put(ndlp);
             mempool_free(mbox, phba->mbox_mem_pool);
 
             lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
                 "0253 Register VPI: Can't send mbox\n");
             goto mbox_err_exit;
         }
     } else {
         lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
                  "0254 Register VPI: no memory\n");
         goto mbox_err_exit;
     }
     return;
 
 mbox_err_exit:
     lpfc_vport_set_state(vport, FC_VPORT_FAILED);
     spin_lock_irq(shost->host_lock);
     vport->fc_flag &= ~FC_VPORT_NEEDS_REG_VPI;
     spin_unlock_irq(shost->host_lock);
     return;
 }
 
 /**
  * lpfc_cancel_all_vport_retry_delay_timer - Cancel all vport retry delay timer
  * @phba: pointer to lpfc hba data structure.
  *
  * This routine cancels the retry delay timers to all the vports.
  **/
 void
 lpfc_cancel_all_vport_retry_delay_timer(struct lpfc_hba *phba)
 {
     struct lpfc_vport **vports;
     struct lpfc_nodelist *ndlp;
     uint32_t link_state;
     int i;
 
     /* Treat this failure as linkdown for all vports */
     link_state = phba->link_state;
     lpfc_linkdown(phba);
     phba->link_state = link_state;
 
     vports = lpfc_create_vport_work_array(phba);
 
     if (vports) {
         for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
             ndlp = lpfc_findnode_did(vports[i], Fabric_DID);
             if (ndlp)
                 lpfc_cancel_retry_delay_tmo(vports[i], ndlp);
             lpfc_els_flush_cmd(vports[i]);
         }
         lpfc_destroy_vport_work_array(phba, vports);
     }
 }
 
 /**
  * lpfc_retry_pport_discovery - Start timer to retry FLOGI.
  * @phba: pointer to lpfc hba data structure.
  *
  * This routine abort all pending discovery commands and
  * start a timer to retry FLOGI for the physical port
  * discovery.
  **/
 void
 lpfc_retry_pport_discovery(struct lpfc_hba *phba)
 {
     struct lpfc_nodelist *ndlp;
 
     /* Cancel the all vports retry delay retry timers */
     lpfc_cancel_all_vport_retry_delay_timer(phba);
 
     /* If fabric require FLOGI, then re-instantiate physical login */
     ndlp = lpfc_findnode_did(phba->pport, Fabric_DID);
     if (!ndlp)
         return;
 
     mod_timer(&ndlp->nlp_delayfunc, jiffies + msecs_to_jiffies(1000));
     spin_lock_irq(&ndlp->lock);
     ndlp->nlp_flag |= NLP_DELAY_TMO;
     spin_unlock_irq(&ndlp->lock);
     ndlp->nlp_last_elscmd = ELS_CMD_FLOGI;
     phba->pport->port_state = LPFC_FLOGI;
     return;
 }
 
 /**
  * lpfc_fabric_login_reqd - Check if FLOGI required.
  * @phba: pointer to lpfc hba data structure.
  * @cmdiocb: pointer to FDISC command iocb.
  * @rspiocb: pointer to FDISC response iocb.
  *
  * This routine checks if a FLOGI is reguired for FDISC
  * to succeed.
  **/
 static int
 lpfc_fabric_login_reqd(struct lpfc_hba *phba,
         struct lpfc_iocbq *cmdiocb,
         struct lpfc_iocbq *rspiocb)
 {
     u32 ulp_status = get_job_ulpstatus(phba, rspiocb);
     u32 ulp_word4 = get_job_word4(phba, rspiocb);
 
     if (ulp_status != IOSTAT_FABRIC_RJT ||
         ulp_word4 != RJT_LOGIN_REQUIRED)
         return 0;
     else
         return 1;
 }
 
 /**
  * lpfc_cmpl_els_fdisc - Completion function for fdisc iocb command
  * @phba: pointer to lpfc hba data structure.
  * @cmdiocb: pointer to lpfc command iocb data structure.
  * @rspiocb: pointer to lpfc response iocb data structure.
  *
  * This routine is the completion callback function to a Fabric Discover
  * (FDISC) ELS command. Since all the FDISC ELS commands are issued
  * single threaded, each FDISC completion callback function will reset
  * the discovery timer for all vports such that the timers will not get
  * unnecessary timeout. The function checks the FDISC IOCB status. If error
  * detected, the vport will be set to FC_VPORT_FAILED state. Otherwise,the
  * vport will set to FC_VPORT_ACTIVE state. It then checks whether the DID
  * assigned to the vport has been changed with the completion of the FDISC
  * command. If so, both RPI (Remote Port Index) and VPI (Virtual Port Index)
  * are unregistered from the HBA, and then the lpfc_register_new_vport()
  * routine is invoked to register new vport with the HBA. Otherwise, the
  * lpfc_do_scr_ns_plogi() routine is invoked to issue a PLOGI to the Name
  * Server for State Change Request (SCR).
  **/
 static void
 lpfc_cmpl_els_fdisc(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
             struct lpfc_iocbq *rspiocb)
 {
     struct lpfc_vport *vport = cmdiocb->vport;
     struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
     struct lpfc_nodelist *ndlp = cmdiocb->ndlp;
     struct lpfc_nodelist *np;
     struct lpfc_nodelist *next_np;
     struct lpfc_iocbq *piocb;
     struct lpfc_dmabuf *pcmd = cmdiocb->cmd_dmabuf, *prsp;
     struct serv_parm *sp;
     uint8_t fabric_param_changed;
     u32 ulp_status, ulp_word4;
 
     ulp_status = get_job_ulpstatus(phba, rspiocb);
     ulp_word4 = get_job_word4(phba, rspiocb);
 
     lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
              "0123 FDISC completes. x%x/x%x prevDID: x%x\n",
              ulp_status, ulp_word4,
              vport->fc_prevDID);
     /* Since all FDISCs are being single threaded, we
      * must reset the discovery timer for ALL vports
      * waiting to send FDISC when one completes.
      */
     list_for_each_entry(piocb, &phba->fabric_iocb_list, list) {
         lpfc_set_disctmo(piocb->vport);
     }
 
     lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
         "FDISC cmpl:      status:x%x/x%x prevdid:x%x",
         ulp_status, ulp_word4, vport->fc_prevDID);
 
     if (ulp_status) {
 
         if (lpfc_fabric_login_reqd(phba, cmdiocb, rspiocb)) {
             lpfc_retry_pport_discovery(phba);
             goto out;
         }
 
         /* Check for retry */
         if (lpfc_els_retry(phba, cmdiocb, rspiocb))
             goto out;
         /* FDISC failed */
         lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
                  "0126 FDISC failed. (x%x/x%x)\n",
                  ulp_status, ulp_word4);
         goto fdisc_failed;
     }
 
     lpfc_check_nlp_post_devloss(vport, ndlp);
 
     spin_lock_irq(shost->host_lock);
     vport->fc_flag &= ~FC_VPORT_CVL_RCVD;
     vport->fc_flag &= ~FC_VPORT_LOGO_RCVD;
     vport->fc_flag |= FC_FABRIC;
     if (vport->phba->fc_topology == LPFC_TOPOLOGY_LOOP)
         vport->fc_flag |=  FC_PUBLIC_LOOP;
     spin_unlock_irq(shost->host_lock);
 
     vport->fc_myDID = ulp_word4 & Mask_DID;
     lpfc_vport_set_state(vport, FC_VPORT_ACTIVE);
     prsp = list_get_first(&pcmd->list, struct lpfc_dmabuf, list);
     if (!prsp)
         goto out;
     sp = prsp->virt + sizeof(uint32_t);
     fabric_param_changed = lpfc_check_clean_addr_bit(vport, sp);
     memcpy(&vport->fabric_portname, &sp->portName,
         sizeof(struct lpfc_name));
     memcpy(&vport->fabric_nodename, &sp->nodeName,
         sizeof(struct lpfc_name));
     if (fabric_param_changed &&
         !(vport->fc_flag & FC_VPORT_NEEDS_REG_VPI)) {
         /* If our NportID changed, we need to ensure all
          * remaining NPORTs get unreg_login'ed so we can
          * issue unreg_vpi.
          */
         list_for_each_entry_safe(np, next_np,
             &vport->fc_nodes, nlp_listp) {
             if ((np->nlp_state != NLP_STE_NPR_NODE) ||
                 !(np->nlp_flag & NLP_NPR_ADISC))
                 continue;
             spin_lock_irq(&ndlp->lock);
             np->nlp_flag &= ~NLP_NPR_ADISC;
             spin_unlock_irq(&ndlp->lock);
             lpfc_unreg_rpi(vport, np);
         }
         lpfc_cleanup_pending_mbox(vport);
 
         if (phba->sli_rev == LPFC_SLI_REV4)
             lpfc_sli4_unreg_all_rpis(vport);
 
         lpfc_mbx_unreg_vpi(vport);
         spin_lock_irq(shost->host_lock);
         vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
         if (phba->sli_rev == LPFC_SLI_REV4)
             vport->fc_flag |= FC_VPORT_NEEDS_INIT_VPI;
         else
             vport->fc_flag |= FC_LOGO_RCVD_DID_CHNG;
         spin_unlock_irq(shost->host_lock);
     } else if ((phba->sli_rev == LPFC_SLI_REV4) &&
         !(vport->fc_flag & FC_VPORT_NEEDS_REG_VPI)) {
         /*
          * Driver needs to re-reg VPI in order for f/w
          * to update the MAC address.
          */
         lpfc_register_new_vport(phba, vport, ndlp);
         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
         goto out;
     }
 
     if (vport->fc_flag & FC_VPORT_NEEDS_INIT_VPI)
         lpfc_issue_init_vpi(vport);
     else if (vport->fc_flag & FC_VPORT_NEEDS_REG_VPI)
         lpfc_register_new_vport(phba, vport, ndlp);
     else
         lpfc_do_scr_ns_plogi(phba, vport);
 
     /* The FDISC completed successfully. Move the fabric ndlp to
      * UNMAPPED state and register with the transport.
      */
     lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
     goto out;
 
 fdisc_failed:
     if (vport->fc_vport &&
         (vport->fc_vport->vport_state != FC_VPORT_NO_FABRIC_RSCS))
         lpfc_vport_set_state(vport, FC_VPORT_FAILED);
     /* Cancel discovery timer */
     lpfc_can_disctmo(vport);
 out:
     lpfc_els_free_iocb(phba, cmdiocb);
     lpfc_nlp_put(ndlp);
 }
 
 /**
  * lpfc_issue_els_fdisc - Issue a fdisc iocb command
  * @vport: pointer to a virtual N_Port data structure.
  * @ndlp: pointer to a node-list data structure.
  * @retry: number of retries to the command IOCB.
  *
  * This routine prepares and issues a Fabric Discover (FDISC) IOCB to
  * a remote node (@ndlp) off a @vport. It uses the lpfc_issue_fabric_iocb()
  * routine to issue the IOCB, which makes sure only one outstanding fabric
  * IOCB will be sent off HBA at any given time.
  *
  * Note that the ndlp reference count will be incremented by 1 for holding the
  * ndlp and the reference to ndlp will be stored into the ndlp field of
  * the IOCB for the completion callback function to the FDISC ELS command.
  *
  * Return code
  *   0 - Successfully issued fdisc iocb command
  *   1 - Failed to issue fdisc iocb command
  **/
 static int
 lpfc_issue_els_fdisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
              uint8_t retry)
 {
     struct lpfc_hba *phba = vport->phba;
     IOCB_t *icmd;
     union lpfc_wqe128 *wqe = NULL;
     struct lpfc_iocbq *elsiocb;
     struct serv_parm *sp;
     uint8_t *pcmd;
     uint16_t cmdsize;
     int did = ndlp->nlp_DID;
     int rc;
 
     vport->port_state = LPFC_FDISC;
     vport->fc_myDID = 0;
     cmdsize = (sizeof(uint32_t) + sizeof(struct serv_parm));
     elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp, did,
                      ELS_CMD_FDISC);
     if (!elsiocb) {
         lpfc_vport_set_state(vport, FC_VPORT_FAILED);
         lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
                  "0255 Issue FDISC: no IOCB\n");
         return 1;
     }
 
     if (phba->sli_rev == LPFC_SLI_REV4) {
         wqe = &elsiocb->wqe;
         bf_set(els_req64_sid, &wqe->els_req, 0);
         bf_set(els_req64_sp, &wqe->els_req, 1);
     } else {
         icmd = &elsiocb->iocb;
         icmd->un.elsreq64.myID = 0;
         icmd->un.elsreq64.fl = 1;
         icmd->ulpCt_h = 1;
         icmd->ulpCt_l = 0;
     }
 
     pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt;
     *((uint32_t *) (pcmd)) = ELS_CMD_FDISC;
     pcmd += sizeof(uint32_t); /* CSP Word 1 */
     memcpy(pcmd, &vport->phba->pport->fc_sparam, sizeof(struct serv_parm));
     sp = (struct serv_parm *) pcmd;
     /* Setup CSPs accordingly for Fabric */
     sp->cmn.e_d_tov = 0;
     sp->cmn.w2.r_a_tov = 0;
     sp->cmn.virtual_fabric_support = 0;
     sp->cls1.classValid = 0;
     sp->cls2.seqDelivery = 1;
     sp->cls3.seqDelivery = 1;
 
     pcmd += sizeof(uint32_t); /* CSP Word 2 */
     pcmd += sizeof(uint32_t); /* CSP Word 3 */
     pcmd += sizeof(uint32_t); /* CSP Word 4 */
     pcmd += sizeof(uint32_t); /* Port Name */
     memcpy(pcmd, &vport->fc_portname, 8);
     pcmd += sizeof(uint32_t); /* Node Name */
     pcmd += sizeof(uint32_t); /* Node Name */
     memcpy(pcmd, &vport->fc_nodename, 8);
     sp->cmn.valid_vendor_ver_level = 0;
     memset(sp->un.vendorVersion, 0, sizeof(sp->un.vendorVersion));
     lpfc_set_disctmo(vport);
 
     phba->fc_stat.elsXmitFDISC++;
     elsiocb->cmd_cmpl = lpfc_cmpl_els_fdisc;
 
     lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
         "Issue FDISC:     did:x%x",
         did, 0, 0);
 
     elsiocb->ndlp = lpfc_nlp_get(ndlp);
     if (!elsiocb->ndlp)
         goto err_out;
 
     rc = lpfc_issue_fabric_iocb(phba, elsiocb);
     if (rc == IOCB_ERROR) {
         lpfc_nlp_put(ndlp);
         goto err_out;
     }
 
     lpfc_vport_set_state(vport, FC_VPORT_INITIALIZING);
     return 0;
 
  err_out:
     lpfc_els_free_iocb(phba, elsiocb);
     lpfc_vport_set_state(vport, FC_VPORT_FAILED);
     lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
              "0256 Issue FDISC: Cannot send IOCB\n");
     return 1;
 }
 
 /**
  * lpfc_cmpl_els_npiv_logo - Completion function with vport logo
  * @phba: pointer to lpfc hba data structure.
  * @cmdiocb: pointer to lpfc command iocb data structure.
  * @rspiocb: pointer to lpfc response iocb data structure.
  *
  * This routine is the completion callback function to the issuing of a LOGO
  * ELS command off a vport. It frees the command IOCB and then decrement the
  * reference count held on ndlp for this completion function, indicating that
  * the reference to the ndlp is no long needed. Note that the
  * lpfc_els_free_iocb() routine decrements the ndlp reference held for this
  * callback function and an additional explicit ndlp reference decrementation
  * will trigger the actual release of the ndlp.
  **/
 static void
 lpfc_cmpl_els_npiv_logo(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
             struct lpfc_iocbq *rspiocb)
 {
     struct lpfc_vport *vport = cmdiocb->vport;
     IOCB_t *irsp;
     struct lpfc_nodelist *ndlp;
     struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
     u32 ulp_status, ulp_word4, did, tmo;
 
     ndlp = cmdiocb->ndlp;
 
     ulp_status = get_job_ulpstatus(phba, rspiocb);
     ulp_word4 = get_job_word4(phba, rspiocb);
 
     if (phba->sli_rev == LPFC_SLI_REV4) {
         did = get_job_els_rsp64_did(phba, cmdiocb);
         tmo = get_wqe_tmo(cmdiocb);
     } else {
         irsp = &rspiocb->iocb;
         did = get_job_els_rsp64_did(phba, rspiocb);
         tmo = irsp->ulpTimeout;
     }
 
     lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
         "LOGO npiv cmpl:  status:x%x/x%x did:x%x",
         ulp_status, ulp_word4, did);
 
     /* NPIV LOGO completes to NPort <nlp_DID> */
     lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
              "2928 NPIV LOGO completes to NPort x%x "
              "Data: x%x x%x x%x x%x x%x x%x x%x\n",
              ndlp->nlp_DID, ulp_status, ulp_word4,
              tmo, vport->num_disc_nodes,
              kref_read(&ndlp->kref), ndlp->nlp_flag,
              ndlp->fc4_xpt_flags);
 
     if (ulp_status == IOSTAT_SUCCESS) {
         spin_lock_irq(shost->host_lock);
         vport->fc_flag &= ~FC_NDISC_ACTIVE;
         vport->fc_flag &= ~FC_FABRIC;
         spin_unlock_irq(shost->host_lock);
         lpfc_can_disctmo(vport);
     }
 
     if (ndlp->save_flags & NLP_WAIT_FOR_LOGO) {
         /* Wake up lpfc_vport_delete if waiting...*/
         if (ndlp->logo_waitq)
             wake_up(ndlp->logo_waitq);
         spin_lock_irq(&ndlp->lock);
         ndlp->nlp_flag &= ~(NLP_ISSUE_LOGO | NLP_LOGO_SND);
         ndlp->save_flags &= ~NLP_WAIT_FOR_LOGO;
         spin_unlock_irq(&ndlp->lock);
     }
 
     /* Safe to release resources now. */
     lpfc_els_free_iocb(phba, cmdiocb);
     lpfc_nlp_put(ndlp);
 }
 
 /**
  * lpfc_issue_els_npiv_logo - Issue a logo off a vport
  * @vport: pointer to a virtual N_Port data structure.
  * @ndlp: pointer to a node-list data structure.
  *
  * This routine issues a LOGO ELS command to an @ndlp off a @vport.
  *
  * Note that the ndlp reference count will be incremented by 1 for holding the
  * ndlp and the reference to ndlp will be stored into the ndlp field of
  * the IOCB for the completion callback function to the LOGO ELS command.
  *
  * Return codes
  *   0 - Successfully issued logo off the @vport
  *   1 - Failed to issue logo off the @vport
  **/
 int
 lpfc_issue_els_npiv_logo(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
 {
     int rc = 0;
     struct lpfc_hba  *phba = vport->phba;
     struct lpfc_iocbq *elsiocb;
     uint8_t *pcmd;
     uint16_t cmdsize;
 
     cmdsize = 2 * sizeof(uint32_t) + sizeof(struct lpfc_name);
     elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, 0, ndlp, ndlp->nlp_DID,
                      ELS_CMD_LOGO);
     if (!elsiocb)
         return 1;
 
     pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt;
     *((uint32_t *) (pcmd)) = ELS_CMD_LOGO;
     pcmd += sizeof(uint32_t);
 
     /* Fill in LOGO payload */
     *((uint32_t *) (pcmd)) = be32_to_cpu(vport->fc_myDID);
     pcmd += sizeof(uint32_t);
     memcpy(pcmd, &vport->fc_portname, sizeof(struct lpfc_name));
 
     lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
         "Issue LOGO npiv  did:x%x flg:x%x",
         ndlp->nlp_DID, ndlp->nlp_flag, 0);
 
     elsiocb->cmd_cmpl = lpfc_cmpl_els_npiv_logo;
     spin_lock_irq(&ndlp->lock);
     ndlp->nlp_flag |= NLP_LOGO_SND;
     spin_unlock_irq(&ndlp->lock);
     elsiocb->ndlp = lpfc_nlp_get(ndlp);
     if (!elsiocb->ndlp) {
         lpfc_els_free_iocb(phba, elsiocb);
         goto err;
     }
 
     rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
     if (rc == IOCB_ERROR) {
         lpfc_els_free_iocb(phba, elsiocb);
         lpfc_nlp_put(ndlp);
         goto err;
     }
     return 0;
 
 err:
     spin_lock_irq(&ndlp->lock);
     ndlp->nlp_flag &= ~NLP_LOGO_SND;
     spin_unlock_irq(&ndlp->lock);
     return 1;
 }
 
 /**
  * lpfc_fabric_block_timeout - Handler function to the fabric block timer
  * @t: timer context used to obtain the lpfc hba.
  *
  * This routine is invoked by the fabric iocb block timer after
  * timeout. It posts the fabric iocb block timeout event by setting the
  * WORKER_FABRIC_BLOCK_TMO bit to work port event bitmap and then invokes
  * lpfc_worker_wake_up() routine to wake up the worker thread. It is for
  * the worker thread to invoke the lpfc_unblock_fabric_iocbs() on the
  * posted event WORKER_FABRIC_BLOCK_TMO.
  **/
 void
 lpfc_fabric_block_timeout(struct timer_list *t)
 {
     struct lpfc_hba  *phba = from_timer(phba, t, fabric_block_timer);
     unsigned long iflags;
     uint32_t tmo_posted;
 
     spin_lock_irqsave(&phba->pport->work_port_lock, iflags);
     tmo_posted = phba->pport->work_port_events & WORKER_FABRIC_BLOCK_TMO;
     if (!tmo_posted)
         phba->pport->work_port_events |= WORKER_FABRIC_BLOCK_TMO;
     spin_unlock_irqrestore(&phba->pport->work_port_lock, iflags);
 
     if (!tmo_posted)
         lpfc_worker_wake_up(phba);
     return;
 }
 
 /**
  * lpfc_resume_fabric_iocbs - Issue a fabric iocb from driver internal list
  * @phba: pointer to lpfc hba data structure.
  *
  * This routine issues one fabric iocb from the driver internal list to
  * the HBA. It first checks whether it's ready to issue one fabric iocb to
  * the HBA (whether there is no outstanding fabric iocb). If so, it shall
  * remove one pending fabric iocb from the driver internal list and invokes
  * lpfc_sli_issue_iocb() routine to send the fabric iocb to the HBA.
  **/
 static void
 lpfc_resume_fabric_iocbs(struct lpfc_hba *phba)
 {
     struct lpfc_iocbq *iocb;
     unsigned long iflags;
     int ret;
 
 repeat:
     iocb = NULL;
     spin_lock_irqsave(&phba->hbalock, iflags);
     /* Post any pending iocb to the SLI layer */
     if (atomic_read(&phba->fabric_iocb_count) == 0) {
         list_remove_head(&phba->fabric_iocb_list, iocb, typeof(*iocb),
                  list);
         if (iocb)
             /* Increment fabric iocb count to hold the position */
             atomic_inc(&phba->fabric_iocb_count);
     }
     spin_unlock_irqrestore(&phba->hbalock, iflags);
     if (iocb) {
         iocb->fabric_cmd_cmpl = iocb->cmd_cmpl;
         iocb->cmd_cmpl = lpfc_cmpl_fabric_iocb;
         iocb->cmd_flag |= LPFC_IO_FABRIC;
 
         lpfc_debugfs_disc_trc(iocb->vport, LPFC_DISC_TRC_ELS_CMD,
                       "Fabric sched1:   ste:x%x",
                       iocb->vport->port_state, 0, 0);
 
         ret = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, iocb, 0);
 
         if (ret == IOCB_ERROR) {
             iocb->cmd_cmpl = iocb->fabric_cmd_cmpl;
             iocb->fabric_cmd_cmpl = NULL;
             iocb->cmd_flag &= ~LPFC_IO_FABRIC;
             set_job_ulpstatus(iocb, IOSTAT_LOCAL_REJECT);
             iocb->wcqe_cmpl.parameter = IOERR_SLI_ABORTED;
             iocb->cmd_cmpl(phba, iocb, iocb);
 
             atomic_dec(&phba->fabric_iocb_count);
             goto repeat;
         }
     }
 }
 
 /**
  * lpfc_unblock_fabric_iocbs - Unblock issuing fabric iocb command
  * @phba: pointer to lpfc hba data structure.
  *
  * This routine unblocks the  issuing fabric iocb command. The function
  * will clear the fabric iocb block bit and then invoke the routine
  * lpfc_resume_fabric_iocbs() to issue one of the pending fabric iocb
  * from the driver internal fabric iocb list.
  **/
 void
 lpfc_unblock_fabric_iocbs(struct lpfc_hba *phba)
 {
     clear_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags);
 
     lpfc_resume_fabric_iocbs(phba);
     return;
 }
 
 /**
  * lpfc_block_fabric_iocbs - Block issuing fabric iocb command
  * @phba: pointer to lpfc hba data structure.
  *
  * This routine blocks the issuing fabric iocb for a specified amount of
  * time (currently 100 ms). This is done by set the fabric iocb block bit
  * and set up a timeout timer for 100ms. When the block bit is set, no more
  * fabric iocb will be issued out of the HBA.
  **/
 static void
 lpfc_block_fabric_iocbs(struct lpfc_hba *phba)
 {
     int blocked;
 
     blocked = test_and_set_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags);
     /* Start a timer to unblock fabric iocbs after 100ms */
     if (!blocked)
         mod_timer(&phba->fabric_block_timer,
               jiffies + msecs_to_jiffies(100));
 
     return;
 }
 
 /**
  * lpfc_cmpl_fabric_iocb - Completion callback function for fabric iocb
  * @phba: pointer to lpfc hba data structure.
  * @cmdiocb: pointer to lpfc command iocb data structure.
  * @rspiocb: pointer to lpfc response iocb data structure.
  *
  * This routine is the callback function that is put to the fabric iocb's
  * callback function pointer (iocb->cmd_cmpl). The original iocb's callback
  * function pointer has been stored in iocb->fabric_cmd_cmpl. This callback
  * function first restores and invokes the original iocb's callback function
  * and then invokes the lpfc_resume_fabric_iocbs() routine to issue the next
  * fabric bound iocb from the driver internal fabric iocb list onto the wire.
  **/
 static void
 lpfc_cmpl_fabric_iocb(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
               struct lpfc_iocbq *rspiocb)
 {
     struct ls_rjt stat;
     u32 ulp_status = get_job_ulpstatus(phba, rspiocb);
     u32 ulp_word4 = get_job_word4(phba, rspiocb);
 
     WARN_ON((cmdiocb->cmd_flag & LPFC_IO_FABRIC) != LPFC_IO_FABRIC);
 
     switch (ulp_status) {
         case IOSTAT_NPORT_RJT:
         case IOSTAT_FABRIC_RJT:
             if (ulp_word4 & RJT_UNAVAIL_TEMP)
                 lpfc_block_fabric_iocbs(phba);
             break;
 
         case IOSTAT_NPORT_BSY:
         case IOSTAT_FABRIC_BSY:
             lpfc_block_fabric_iocbs(phba);
             break;
 
         case IOSTAT_LS_RJT:
             stat.un.ls_rjt_error_be =
                 cpu_to_be32(ulp_word4);
             if ((stat.un.b.lsRjtRsnCode == LSRJT_UNABLE_TPC) ||
                 (stat.un.b.lsRjtRsnCode == LSRJT_LOGICAL_BSY))
                 lpfc_block_fabric_iocbs(phba);
             break;
     }
 
     BUG_ON(atomic_read(&phba->fabric_iocb_count) == 0);
 
     cmdiocb->cmd_cmpl = cmdiocb->fabric_cmd_cmpl;
     cmdiocb->fabric_cmd_cmpl = NULL;
     cmdiocb->cmd_flag &= ~LPFC_IO_FABRIC;
     cmdiocb->cmd_cmpl(phba, cmdiocb, rspiocb);
 
     atomic_dec(&phba->fabric_iocb_count);
     if (!test_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags)) {
         /* Post any pending iocbs to HBA */
         lpfc_resume_fabric_iocbs(phba);
     }
 }
 
 /**
  * lpfc_issue_fabric_iocb - Issue a fabric iocb command
  * @phba: pointer to lpfc hba data structure.
  * @iocb: pointer to lpfc command iocb data structure.
  *
  * This routine is used as the top-level API for issuing a fabric iocb command
  * such as FLOGI and FDISC. To accommodate certain switch fabric, this driver
  * function makes sure that only one fabric bound iocb will be outstanding at
  * any given time. As such, this function will first check to see whether there
  * is already an outstanding fabric iocb on the wire. If so, it will put the
  * newly issued iocb onto the driver internal fabric iocb list, waiting to be
  * issued later. Otherwise, it will issue the iocb on the wire and update the
  * fabric iocb count it indicate that there is one fabric iocb on the wire.
  *
  * Note, this implementation has a potential sending out fabric IOCBs out of
  * order. The problem is caused by the construction of the "ready" boolen does
  * not include the condition that the internal fabric IOCB list is empty. As
  * such, it is possible a fabric IOCB issued by this routine might be "jump"
  * ahead of the fabric IOCBs in the internal list.
  *
  * Return code
  *   IOCB_SUCCESS - either fabric iocb put on the list or issued successfully
  *   IOCB_ERROR - failed to issue fabric iocb
  **/
 static int
 lpfc_issue_fabric_iocb(struct lpfc_hba *phba, struct lpfc_iocbq *iocb)
 {
     unsigned long iflags;
     int ready;
     int ret;
 
     BUG_ON(atomic_read(&phba->fabric_iocb_count) > 1);
 
     spin_lock_irqsave(&phba->hbalock, iflags);
     ready = atomic_read(&phba->fabric_iocb_count) == 0 &&
         !test_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags);
 
     if (ready)
         /* Increment fabric iocb count to hold the position */
         atomic_inc(&phba->fabric_iocb_count);
     spin_unlock_irqrestore(&phba->hbalock, iflags);
     if (ready) {
         iocb->fabric_cmd_cmpl = iocb->cmd_cmpl;
         iocb->cmd_cmpl = lpfc_cmpl_fabric_iocb;
         iocb->cmd_flag |= LPFC_IO_FABRIC;
 
         lpfc_debugfs_disc_trc(iocb->vport, LPFC_DISC_TRC_ELS_CMD,
                       "Fabric sched2:   ste:x%x",
                       iocb->vport->port_state, 0, 0);
 
         ret = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, iocb, 0);
 
         if (ret == IOCB_ERROR) {
             iocb->cmd_cmpl = iocb->fabric_cmd_cmpl;
             iocb->fabric_cmd_cmpl = NULL;
             iocb->cmd_flag &= ~LPFC_IO_FABRIC;
             atomic_dec(&phba->fabric_iocb_count);
         }
     } else {
         spin_lock_irqsave(&phba->hbalock, iflags);
         list_add_tail(&iocb->list, &phba->fabric_iocb_list);
         spin_unlock_irqrestore(&phba->hbalock, iflags);
         ret = IOCB_SUCCESS;
     }
     return ret;
 }
 
 /**
  * lpfc_fabric_abort_vport - Abort a vport's iocbs from driver fabric iocb list
  * @vport: pointer to a virtual N_Port data structure.
  *
  * This routine aborts all the IOCBs associated with a @vport from the
  * driver internal fabric IOCB list. The list contains fabric IOCBs to be
  * issued to the ELS IOCB ring. This abort function walks the fabric IOCB
  * list, removes each IOCB associated with the @vport off the list, set the
  * status field to IOSTAT_LOCAL_REJECT, and invokes the callback function
  * associated with the IOCB.
  **/
 static void lpfc_fabric_abort_vport(struct lpfc_vport *vport)
 {
     LIST_HEAD(completions);
     struct lpfc_hba  *phba = vport->phba;
     struct lpfc_iocbq *tmp_iocb, *piocb;
 
     spin_lock_irq(&phba->hbalock);
     list_for_each_entry_safe(piocb, tmp_iocb, &phba->fabric_iocb_list,
                  list) {
 
         if (piocb->vport != vport)
             continue;
 
         list_move_tail(&piocb->list, &completions);
     }
     spin_unlock_irq(&phba->hbalock);
 
     /* Cancel all the IOCBs from the completions list */
     lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
                   IOERR_SLI_ABORTED);
 }
 
 /**
  * lpfc_fabric_abort_nport - Abort a ndlp's iocbs from driver fabric iocb list
  * @ndlp: pointer to a node-list data structure.
  *
  * This routine aborts all the IOCBs associated with an @ndlp from the
  * driver internal fabric IOCB list. The list contains fabric IOCBs to be
  * issued to the ELS IOCB ring. This abort function walks the fabric IOCB
  * list, removes each IOCB associated with the @ndlp off the list, set the
  * status field to IOSTAT_LOCAL_REJECT, and invokes the callback function
  * associated with the IOCB.
  **/
 void lpfc_fabric_abort_nport(struct lpfc_nodelist *ndlp)
 {
     LIST_HEAD(completions);
     struct lpfc_hba  *phba = ndlp->phba;
     struct lpfc_iocbq *tmp_iocb, *piocb;
     struct lpfc_sli_ring *pring;
 
     pring = lpfc_phba_elsring(phba);
 
     if (unlikely(!pring))
         return;
 
     spin_lock_irq(&phba->hbalock);
     list_for_each_entry_safe(piocb, tmp_iocb, &phba->fabric_iocb_list,
                  list) {
         if ((lpfc_check_sli_ndlp(phba, pring, piocb, ndlp))) {
 
             list_move_tail(&piocb->list, &completions);
         }
     }
     spin_unlock_irq(&phba->hbalock);
 
     /* Cancel all the IOCBs from the completions list */
     lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
                   IOERR_SLI_ABORTED);
 }
 
 /**
  * lpfc_fabric_abort_hba - Abort all iocbs on driver fabric iocb list
  * @phba: pointer to lpfc hba data structure.
  *
  * This routine aborts all the IOCBs currently on the driver internal
  * fabric IOCB list. The list contains fabric IOCBs to be issued to the ELS
  * IOCB ring. This function takes the entire IOCB list off the fabric IOCB
  * list, removes IOCBs off the list, set the status field to
  * IOSTAT_LOCAL_REJECT, and invokes the callback function associated with
  * the IOCB.
  **/
 void lpfc_fabric_abort_hba(struct lpfc_hba *phba)
 {
     LIST_HEAD(completions);
 
     spin_lock_irq(&phba->hbalock);
     list_splice_init(&phba->fabric_iocb_list, &completions);
     spin_unlock_irq(&phba->hbalock);
 
     /* Cancel all the IOCBs from the completions list */
     lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
                   IOERR_SLI_ABORTED);
 }
 
 /**
  * lpfc_sli4_vport_delete_els_xri_aborted -Remove all ndlp references for vport
  * @vport: pointer to lpfc vport data structure.
  *
  * This routine is invoked by the vport cleanup for deletions and the cleanup
  * for an ndlp on removal.
  **/
 void
 lpfc_sli4_vport_delete_els_xri_aborted(struct lpfc_vport *vport)
 {
     struct lpfc_hba *phba = vport->phba;
     struct lpfc_sglq *sglq_entry = NULL, *sglq_next = NULL;
     struct lpfc_nodelist *ndlp = NULL;
     unsigned long iflag = 0;
 
     spin_lock_irqsave(&phba->sli4_hba.sgl_list_lock, iflag);
     list_for_each_entry_safe(sglq_entry, sglq_next,
             &phba->sli4_hba.lpfc_abts_els_sgl_list, list) {
         if (sglq_entry->ndlp && sglq_entry->ndlp->vport == vport) {
             lpfc_nlp_put(sglq_entry->ndlp);
             ndlp = sglq_entry->ndlp;
             sglq_entry->ndlp = NULL;
 
             /* If the xri on the abts_els_sgl list is for the Fport
              * node and the vport is unloading, the xri aborted wcqe
              * likely isn't coming back.  Just release the sgl.
              */
             if ((vport->load_flag & FC_UNLOADING) &&
                 ndlp->nlp_DID == Fabric_DID) {
                 list_del(&sglq_entry->list);
                 sglq_entry->state = SGL_FREED;
                 list_add_tail(&sglq_entry->list,
                     &phba->sli4_hba.lpfc_els_sgl_list);
             }
         }
     }
     spin_unlock_irqrestore(&phba->sli4_hba.sgl_list_lock, iflag);
     return;
 }
 
 /**
  * lpfc_sli4_els_xri_aborted - Slow-path process of els xri abort
  * @phba: pointer to lpfc hba data structure.
  * @axri: pointer to the els xri abort wcqe structure.
  *
  * This routine is invoked by the worker thread to process a SLI4 slow-path
  * ELS aborted xri.
  **/
 void
 lpfc_sli4_els_xri_aborted(struct lpfc_hba *phba,
               struct sli4_wcqe_xri_aborted *axri)
 {
     uint16_t xri = bf_get(lpfc_wcqe_xa_xri, axri);
     uint16_t rxid = bf_get(lpfc_wcqe_xa_remote_xid, axri);
     uint16_t lxri = 0;
 
     struct lpfc_sglq *sglq_entry = NULL, *sglq_next = NULL;
     unsigned long iflag = 0;
     struct lpfc_nodelist *ndlp;
     struct lpfc_sli_ring *pring;
 
     pring = lpfc_phba_elsring(phba);
 
     spin_lock_irqsave(&phba->sli4_hba.sgl_list_lock, iflag);
     list_for_each_entry_safe(sglq_entry, sglq_next,
             &phba->sli4_hba.lpfc_abts_els_sgl_list, list) {
         if (sglq_entry->sli4_xritag == xri) {
             list_del(&sglq_entry->list);
             ndlp = sglq_entry->ndlp;
             sglq_entry->ndlp = NULL;
             list_add_tail(&sglq_entry->list,
                 &phba->sli4_hba.lpfc_els_sgl_list);
             sglq_entry->state = SGL_FREED;
             spin_unlock_irqrestore(&phba->sli4_hba.sgl_list_lock,
                            iflag);
 
             if (ndlp) {
                 lpfc_set_rrq_active(phba, ndlp,
                     sglq_entry->sli4_lxritag,
                     rxid, 1);
                 lpfc_nlp_put(ndlp);
             }
 
             /* Check if TXQ queue needs to be serviced */
             if (pring && !list_empty(&pring->txq))
                 lpfc_worker_wake_up(phba);
             return;
         }
     }
     spin_unlock_irqrestore(&phba->sli4_hba.sgl_list_lock, iflag);
     lxri = lpfc_sli4_xri_inrange(phba, xri);
     if (lxri == NO_XRI)
         return;
 
     spin_lock_irqsave(&phba->hbalock, iflag);
     sglq_entry = __lpfc_get_active_sglq(phba, lxri);
     if (!sglq_entry || (sglq_entry->sli4_xritag != xri)) {
         spin_unlock_irqrestore(&phba->hbalock, iflag);
         return;
     }
     sglq_entry->state = SGL_XRI_ABORTED;
     spin_unlock_irqrestore(&phba->hbalock, iflag);
     return;
 }
 
 /* lpfc_sli_abts_recover_port - Recover a port that failed a BLS_ABORT req.
  * @vport: pointer to virtual port object.
  * @ndlp: nodelist pointer for the impacted node.
  *
  * The driver calls this routine in response to an SLI4 XRI ABORT CQE
  * or an SLI3 ASYNC_STATUS_CN event from the port.  For either event,
  * the driver is required to send a LOGO to the remote node before it
  * attempts to recover its login to the remote node.
  */
 void
 lpfc_sli_abts_recover_port(struct lpfc_vport *vport,
                struct lpfc_nodelist *ndlp)
 {
     struct Scsi_Host *shost;
     struct lpfc_hba *phba;
     unsigned long flags = 0;
 
     shost = lpfc_shost_from_vport(vport);
     phba = vport->phba;
     if (ndlp->nlp_state != NLP_STE_MAPPED_NODE) {
         lpfc_printf_log(phba, KERN_INFO,
                 LOG_SLI, "3093 No rport recovery needed. "
                 "rport in state 0x%x\n", ndlp->nlp_state);
         return;
     }
     lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
             "3094 Start rport recovery on shost id 0x%x "
             "fc_id 0x%06x vpi 0x%x rpi 0x%x state 0x%x "
             "flags 0x%x\n",
             shost->host_no, ndlp->nlp_DID,
             vport->vpi, ndlp->nlp_rpi, ndlp->nlp_state,
             ndlp->nlp_flag);
     /*
      * The rport is not responding.  Remove the FCP-2 flag to prevent
      * an ADISC in the follow-up recovery code.
      */
     spin_lock_irqsave(&ndlp->lock, flags);
     ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE;
     ndlp->nlp_flag |= NLP_ISSUE_LOGO;
     spin_unlock_irqrestore(&ndlp->lock, flags);
     lpfc_unreg_rpi(vport, ndlp);
 }
 
 static void lpfc_init_cs_ctl_bitmap(struct lpfc_vport *vport)
 {
     bitmap_zero(vport->vmid_priority_range, LPFC_VMID_MAX_PRIORITY_RANGE);
 }
 
 static void
 lpfc_vmid_set_cs_ctl_range(struct lpfc_vport *vport, u32 min, u32 max)
 {
     u32 i;
 
     if ((min > max) || (max > LPFC_VMID_MAX_PRIORITY_RANGE))
         return;
 
     for (i = min; i <= max; i++)
         set_bit(i, vport->vmid_priority_range);
 }
 
 static void lpfc_vmid_put_cs_ctl(struct lpfc_vport *vport, u32 ctcl_vmid)
 {
     set_bit(ctcl_vmid, vport->vmid_priority_range);
 }
 
 u32 lpfc_vmid_get_cs_ctl(struct lpfc_vport *vport)
 {
     u32 i;
 
     i = find_first_bit(vport->vmid_priority_range,
                LPFC_VMID_MAX_PRIORITY_RANGE);
 
     if (i == LPFC_VMID_MAX_PRIORITY_RANGE)
         return 0;
 
     clear_bit(i, vport->vmid_priority_range);
     return i;
 }
 
 #define MAX_PRIORITY_DESC   255
 
 static void
 lpfc_cmpl_els_qfpa(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
            struct lpfc_iocbq *rspiocb)
 {
     struct lpfc_vport *vport = cmdiocb->vport;
     struct priority_range_desc *desc;
     struct lpfc_dmabuf *prsp = NULL;
     struct lpfc_vmid_priority_range *vmid_range = NULL;
     u32 *data;
     struct lpfc_dmabuf *dmabuf = cmdiocb->cmd_dmabuf;
     u32 ulp_status = get_job_ulpstatus(phba, rspiocb);
     u32 ulp_word4 = get_job_word4(phba, rspiocb);
     u8 *pcmd, max_desc;
     u32 len, i;
     struct lpfc_nodelist *ndlp = cmdiocb->ndlp;
 
     prsp = list_get_first(&dmabuf->list, struct lpfc_dmabuf, list);
     if (!prsp)
         goto out;
 
     pcmd = prsp->virt;
     data = (u32 *)pcmd;
     if (data[0] == ELS_CMD_LS_RJT) {
         lpfc_printf_vlog(vport, KERN_WARNING, LOG_SLI,
                  "3277 QFPA LS_RJT x%x  x%x\n",
                  data[0], data[1]);
         goto out;
     }
     if (ulp_status) {
         lpfc_printf_vlog(vport, KERN_ERR, LOG_SLI,
                  "6529 QFPA failed with status x%x  x%x\n",
                  ulp_status, ulp_word4);
         goto out;
     }
 
     if (!vport->qfpa_res) {
         max_desc = FCELSSIZE / sizeof(*vport->qfpa_res);
         vport->qfpa_res = kcalloc(max_desc, sizeof(*vport->qfpa_res),
                       GFP_KERNEL);
         if (!vport->qfpa_res)
             goto out;
     }
 
     len = *((u32 *)(pcmd + 4));
     len = be32_to_cpu(len);
     memcpy(vport->qfpa_res, pcmd, len + 8);
     len = len / LPFC_PRIORITY_RANGE_DESC_SIZE;
 
     desc = (struct priority_range_desc *)(pcmd + 8);
     vmid_range = vport->vmid_priority.vmid_range;
     if (!vmid_range) {
         vmid_range = kcalloc(MAX_PRIORITY_DESC, sizeof(*vmid_range),
                      GFP_KERNEL);
         if (!vmid_range) {
             kfree(vport->qfpa_res);
             goto out;
         }
         vport->vmid_priority.vmid_range = vmid_range;
     }
     vport->vmid_priority.num_descriptors = len;
 
     for (i = 0; i < len; i++, vmid_range++, desc++) {
         lpfc_printf_vlog(vport, KERN_DEBUG, LOG_ELS,
                  "6539 vmid values low=%d, high=%d, qos=%d, "
                  "local ve id=%d\n", desc->lo_range,
                  desc->hi_range, desc->qos_priority,
                  desc->local_ve_id);
 
         vmid_range->low = desc->lo_range << 1;
         if (desc->local_ve_id == QFPA_ODD_ONLY)
             vmid_range->low++;
         if (desc->qos_priority)
             vport->vmid_flag |= LPFC_VMID_QOS_ENABLED;
         vmid_range->qos = desc->qos_priority;
 
         vmid_range->high = desc->hi_range << 1;
         if ((desc->local_ve_id == QFPA_ODD_ONLY) ||
             (desc->local_ve_id == QFPA_EVEN_ODD))
             vmid_range->high++;
     }
     lpfc_init_cs_ctl_bitmap(vport);
     for (i = 0; i < vport->vmid_priority.num_descriptors; i++) {
         lpfc_vmid_set_cs_ctl_range(vport,
                 vport->vmid_priority.vmid_range[i].low,
                 vport->vmid_priority.vmid_range[i].high);
     }
 
     vport->vmid_flag |= LPFC_VMID_QFPA_CMPL;
  out:
     lpfc_els_free_iocb(phba, cmdiocb);
     lpfc_nlp_put(ndlp);
 }
 
 int lpfc_issue_els_qfpa(struct lpfc_vport *vport)
 {
     struct lpfc_hba *phba = vport->phba;
     struct lpfc_nodelist *ndlp;
     struct lpfc_iocbq *elsiocb;
     u8 *pcmd;
     int ret;
 
     ndlp = lpfc_findnode_did(phba->pport, Fabric_DID);
     if (!ndlp || ndlp->nlp_state != NLP_STE_UNMAPPED_NODE)
         return -ENXIO;
 
     elsiocb = lpfc_prep_els_iocb(vport, 1, LPFC_QFPA_SIZE, 2, ndlp,
                      ndlp->nlp_DID, ELS_CMD_QFPA);
     if (!elsiocb)
         return -ENOMEM;
 
     pcmd = (u8 *)elsiocb->cmd_dmabuf->virt;
 
     *((u32 *)(pcmd)) = ELS_CMD_QFPA;
     pcmd += 4;
 
     elsiocb->cmd_cmpl = lpfc_cmpl_els_qfpa;
 
     elsiocb->ndlp = lpfc_nlp_get(ndlp);
     if (!elsiocb->ndlp) {
         lpfc_els_free_iocb(vport->phba, elsiocb);
         return -ENXIO;
     }
 
     ret = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 2);
     if (ret != IOCB_SUCCESS) {
         lpfc_els_free_iocb(phba, elsiocb);
         lpfc_nlp_put(ndlp);
         return -EIO;
     }
     vport->vmid_flag &= ~LPFC_VMID_QOS_ENABLED;
     return 0;
 }
 
 int
 lpfc_vmid_uvem(struct lpfc_vport *vport,
            struct lpfc_vmid *vmid, bool instantiated)
 {
     struct lpfc_vem_id_desc *vem_id_desc;
     struct lpfc_nodelist *ndlp;
     struct lpfc_iocbq *elsiocb;
     struct instantiated_ve_desc *inst_desc;
     struct lpfc_vmid_context *vmid_context;
     u8 *pcmd;
     u32 *len;
     int ret = 0;
 
     ndlp = lpfc_findnode_did(vport, Fabric_DID);
     if (!ndlp || ndlp->nlp_state != NLP_STE_UNMAPPED_NODE)
         return -ENXIO;
 
     vmid_context = kmalloc(sizeof(*vmid_context), GFP_KERNEL);
     if (!vmid_context)
         return -ENOMEM;
     elsiocb = lpfc_prep_els_iocb(vport, 1, LPFC_UVEM_SIZE, 2,
                      ndlp, Fabric_DID, ELS_CMD_UVEM);
     if (!elsiocb)
         goto out;
 
     lpfc_printf_vlog(vport, KERN_DEBUG, LOG_ELS,
              "3427 Host vmid %s %d\n",
              vmid->host_vmid, instantiated);
     vmid_context->vmp = vmid;
     vmid_context->nlp = ndlp;
     vmid_context->instantiated = instantiated;
     elsiocb->vmid_tag.vmid_context = vmid_context;
     pcmd = (u8 *)elsiocb->cmd_dmabuf->virt;
 
     if (uuid_is_null((uuid_t *)vport->lpfc_vmid_host_uuid))
         memcpy(vport->lpfc_vmid_host_uuid, vmid->host_vmid,
                LPFC_COMPRESS_VMID_SIZE);
 
     *((u32 *)(pcmd)) = ELS_CMD_UVEM;
     len = (u32 *)(pcmd + 4);
     *len = cpu_to_be32(LPFC_UVEM_SIZE - 8);
 
     vem_id_desc = (struct lpfc_vem_id_desc *)(pcmd + 8);
     vem_id_desc->tag = be32_to_cpu(VEM_ID_DESC_TAG);
     vem_id_desc->length = be32_to_cpu(LPFC_UVEM_VEM_ID_DESC_SIZE);
     memcpy(vem_id_desc->vem_id, vport->lpfc_vmid_host_uuid,
            LPFC_COMPRESS_VMID_SIZE);
 
     inst_desc = (struct instantiated_ve_desc *)(pcmd + 32);
     inst_desc->tag = be32_to_cpu(INSTANTIATED_VE_DESC_TAG);
     inst_desc->length = be32_to_cpu(LPFC_UVEM_VE_MAP_DESC_SIZE);
     memcpy(inst_desc->global_vem_id, vmid->host_vmid,
            LPFC_COMPRESS_VMID_SIZE);
 
     bf_set(lpfc_instantiated_nport_id, inst_desc, vport->fc_myDID);
     bf_set(lpfc_instantiated_local_id, inst_desc,
            vmid->un.cs_ctl_vmid);
     if (instantiated) {
         inst_desc->tag = be32_to_cpu(INSTANTIATED_VE_DESC_TAG);
     } else {
         inst_desc->tag = be32_to_cpu(DEINSTANTIATED_VE_DESC_TAG);
         lpfc_vmid_put_cs_ctl(vport, vmid->un.cs_ctl_vmid);
     }
     inst_desc->word6 = cpu_to_be32(inst_desc->word6);
 
     elsiocb->cmd_cmpl = lpfc_cmpl_els_uvem;
 
     elsiocb->ndlp = lpfc_nlp_get(ndlp);
     if (!elsiocb->ndlp) {
         lpfc_els_free_iocb(vport->phba, elsiocb);
         goto out;
     }
 
     ret = lpfc_sli_issue_iocb(vport->phba, LPFC_ELS_RING, elsiocb, 0);
     if (ret != IOCB_SUCCESS) {
         lpfc_els_free_iocb(vport->phba, elsiocb);
         lpfc_nlp_put(ndlp);
         goto out;
     }
 
     return 0;
  out:
     kfree(vmid_context);
     return -EIO;
 }
 
 static void
 lpfc_cmpl_els_uvem(struct lpfc_hba *phba, struct lpfc_iocbq *icmdiocb,
            struct lpfc_iocbq *rspiocb)
 {
     struct lpfc_vport *vport = icmdiocb->vport;
     struct lpfc_dmabuf *prsp = NULL;
     struct lpfc_vmid_context *vmid_context =
         icmdiocb->vmid_tag.vmid_context;
     struct lpfc_nodelist *ndlp = icmdiocb->ndlp;
     u8 *pcmd;
     u32 *data;
     u32 ulp_status = get_job_ulpstatus(phba, rspiocb);
     u32 ulp_word4 = get_job_word4(phba, rspiocb);
     struct lpfc_dmabuf *dmabuf = icmdiocb->cmd_dmabuf;
     struct lpfc_vmid *vmid;
 
     vmid = vmid_context->vmp;
     if (!ndlp || ndlp->nlp_state != NLP_STE_UNMAPPED_NODE)
         ndlp = NULL;
 
     prsp = list_get_first(&dmabuf->list, struct lpfc_dmabuf, list);
     if (!prsp)
         goto out;
     pcmd = prsp->virt;
     data = (u32 *)pcmd;
     if (data[0] == ELS_CMD_LS_RJT) {
         lpfc_printf_vlog(vport, KERN_WARNING, LOG_SLI,
                  "4532 UVEM LS_RJT %x %x\n", data[0], data[1]);
         goto out;
     }
     if (ulp_status) {
         lpfc_printf_vlog(vport, KERN_WARNING, LOG_SLI,
                  "4533 UVEM error status %x: %x\n",
                  ulp_status, ulp_word4);
         goto out;
     }
     spin_lock(&phba->hbalock);
     /* Set IN USE flag */
     vport->vmid_flag |= LPFC_VMID_IN_USE;
     phba->pport->vmid_flag |= LPFC_VMID_IN_USE;
     spin_unlock(&phba->hbalock);
 
     if (vmid_context->instantiated) {
         write_lock(&vport->vmid_lock);
         vmid->flag |= LPFC_VMID_REGISTERED;
         vmid->flag &= ~LPFC_VMID_REQ_REGISTER;
         write_unlock(&vport->vmid_lock);
     }
 
  out:
     kfree(vmid_context);
     lpfc_els_free_iocb(phba, icmdiocb);
     lpfc_nlp_put(ndlp);
 }