OSCL-LXR linux-6.0.1/​drivers/​scsi/​lpfc/​lpfc_hbadisc.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.                                     *
  *******************************************************************/
 
 #include <linux/blkdev.h>
 #include <linux/delay.h>
 #include <linux/slab.h>
 #include <linux/pci.h>
 #include <linux/kthread.h>
 #include <linux/interrupt.h>
 #include <linux/lockdep.h>
 #include <linux/utsname.h>
 
 #include <scsi/scsi.h>
 #include <scsi/scsi_device.h>
 #include <scsi/scsi_host.h>
 #include <scsi/scsi_transport_fc.h>
 #include <scsi/fc/fc_fs.h>
 
 #include "lpfc_hw4.h"
 #include "lpfc_hw.h"
 #include "lpfc_nl.h"
 #include "lpfc_disc.h"
 #include "lpfc_sli.h"
 #include "lpfc_sli4.h"
 #include "lpfc.h"
 #include "lpfc_scsi.h"
 #include "lpfc_nvme.h"
 #include "lpfc_logmsg.h"
 #include "lpfc_crtn.h"
 #include "lpfc_vport.h"
 #include "lpfc_debugfs.h"
 
 /* AlpaArray for assignment of scsid for scan-down and bind_method */
 static uint8_t lpfcAlpaArray[] = {
     0xEF, 0xE8, 0xE4, 0xE2, 0xE1, 0xE0, 0xDC, 0xDA, 0xD9, 0xD6,
     0xD5, 0xD4, 0xD3, 0xD2, 0xD1, 0xCE, 0xCD, 0xCC, 0xCB, 0xCA,
     0xC9, 0xC7, 0xC6, 0xC5, 0xC3, 0xBC, 0xBA, 0xB9, 0xB6, 0xB5,
     0xB4, 0xB3, 0xB2, 0xB1, 0xAE, 0xAD, 0xAC, 0xAB, 0xAA, 0xA9,
     0xA7, 0xA6, 0xA5, 0xA3, 0x9F, 0x9E, 0x9D, 0x9B, 0x98, 0x97,
     0x90, 0x8F, 0x88, 0x84, 0x82, 0x81, 0x80, 0x7C, 0x7A, 0x79,
     0x76, 0x75, 0x74, 0x73, 0x72, 0x71, 0x6E, 0x6D, 0x6C, 0x6B,
     0x6A, 0x69, 0x67, 0x66, 0x65, 0x63, 0x5C, 0x5A, 0x59, 0x56,
     0x55, 0x54, 0x53, 0x52, 0x51, 0x4E, 0x4D, 0x4C, 0x4B, 0x4A,
     0x49, 0x47, 0x46, 0x45, 0x43, 0x3C, 0x3A, 0x39, 0x36, 0x35,
     0x34, 0x33, 0x32, 0x31, 0x2E, 0x2D, 0x2C, 0x2B, 0x2A, 0x29,
     0x27, 0x26, 0x25, 0x23, 0x1F, 0x1E, 0x1D, 0x1B, 0x18, 0x17,
     0x10, 0x0F, 0x08, 0x04, 0x02, 0x01
 };
 
 static void lpfc_disc_timeout_handler(struct lpfc_vport *);
 static void lpfc_disc_flush_list(struct lpfc_vport *vport);
 static void lpfc_unregister_fcfi_cmpl(struct lpfc_hba *, LPFC_MBOXQ_t *);
 static int lpfc_fcf_inuse(struct lpfc_hba *);
 static void lpfc_mbx_cmpl_read_sparam(struct lpfc_hba *, LPFC_MBOXQ_t *);
 static void lpfc_check_inactive_vmid(struct lpfc_hba *phba);
 static void lpfc_check_vmid_qfpa_issue(struct lpfc_hba *phba);
 
 static int
 lpfc_valid_xpt_node(struct lpfc_nodelist *ndlp)
 {
     if (ndlp->nlp_fc4_type ||
         ndlp->nlp_type & NLP_FABRIC)
         return 1;
     return 0;
 }
 /* The source of a terminate rport I/O is either a dev_loss_tmo
  * event or a call to fc_remove_host.  While the rport should be
  * valid during these downcalls, the transport can call twice
  * in a single event.  This routine provides somoe protection
  * as the NDLP isn't really free, just released to the pool.
  */
 static int
 lpfc_rport_invalid(struct fc_rport *rport)
 {
     struct lpfc_rport_data *rdata;
     struct lpfc_nodelist *ndlp;
 
     if (!rport) {
         pr_err("**** %s: NULL rport, exit.\n", __func__);
         return -EINVAL;
     }
 
     rdata = rport->dd_data;
     if (!rdata) {
         pr_err("**** %s: NULL dd_data on rport x%px SID x%x\n",
                __func__, rport, rport->scsi_target_id);
         return -EINVAL;
     }
 
     ndlp = rdata->pnode;
     if (!rdata->pnode) {
         pr_info("**** %s: NULL ndlp on rport x%px SID x%x\n",
             __func__, rport, rport->scsi_target_id);
         return -EINVAL;
     }
 
     if (!ndlp->vport) {
         pr_err("**** %s: Null vport on ndlp x%px, DID x%x rport x%px "
                "SID x%x\n", __func__, ndlp, ndlp->nlp_DID, rport,
                rport->scsi_target_id);
         return -EINVAL;
     }
     return 0;
 }
 
 void
 lpfc_terminate_rport_io(struct fc_rport *rport)
 {
     struct lpfc_rport_data *rdata;
     struct lpfc_nodelist *ndlp;
     struct lpfc_vport *vport;
 
     if (lpfc_rport_invalid(rport))
         return;
 
     rdata = rport->dd_data;
     ndlp = rdata->pnode;
     vport = ndlp->vport;
     lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
                   "rport terminate: sid:x%x did:x%x flg:x%x",
                   ndlp->nlp_sid, ndlp->nlp_DID, ndlp->nlp_flag);
 
     if (ndlp->nlp_sid != NLP_NO_SID)
         lpfc_sli_abort_iocb(vport, ndlp->nlp_sid, 0, LPFC_CTX_TGT);
 }
 
 /*
  * This function will be called when dev_loss_tmo fire.
  */
 void
 lpfc_dev_loss_tmo_callbk(struct fc_rport *rport)
 {
     struct lpfc_nodelist *ndlp;
     struct lpfc_vport *vport;
     struct lpfc_hba   *phba;
     struct lpfc_work_evt *evtp;
     unsigned long iflags;
 
     ndlp = ((struct lpfc_rport_data *)rport->dd_data)->pnode;
     if (!ndlp)
         return;
 
     vport = ndlp->vport;
     phba  = vport->phba;
 
     lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
         "rport devlosscb: sid:x%x did:x%x flg:x%x",
         ndlp->nlp_sid, ndlp->nlp_DID, ndlp->nlp_flag);
 
     lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE,
              "3181 dev_loss_callbk x%06x, rport x%px flg x%x "
              "load_flag x%x refcnt %d state %d xpt x%x\n",
              ndlp->nlp_DID, ndlp->rport, ndlp->nlp_flag,
              vport->load_flag, kref_read(&ndlp->kref),
              ndlp->nlp_state, ndlp->fc4_xpt_flags);
 
     /* Don't schedule a worker thread event if the vport is going down.
      * The teardown process cleans up the node via lpfc_drop_node.
      */
     if (vport->load_flag & FC_UNLOADING) {
         ((struct lpfc_rport_data *)rport->dd_data)->pnode = NULL;
         ndlp->rport = NULL;
 
         ndlp->fc4_xpt_flags &= ~SCSI_XPT_REGD;
         /* clear the NLP_XPT_REGD if the node is not registered
          * with nvme-fc
          */
         if (ndlp->fc4_xpt_flags == NLP_XPT_REGD)
             ndlp->fc4_xpt_flags &= ~NLP_XPT_REGD;
 
         /* Remove the node reference from remote_port_add now.
          * The driver will not call remote_port_delete.
          */
         lpfc_nlp_put(ndlp);
         return;
     }
 
     if (ndlp->nlp_state == NLP_STE_MAPPED_NODE)
         return;
 
     if (rport->port_name != wwn_to_u64(ndlp->nlp_portname.u.wwn))
         lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
                  "6789 rport name %llx != node port name %llx",
                  rport->port_name,
                  wwn_to_u64(ndlp->nlp_portname.u.wwn));
 
     evtp = &ndlp->dev_loss_evt;
 
     if (!list_empty(&evtp->evt_listp)) {
         lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
                  "6790 rport name %llx dev_loss_evt pending\n",
                  rport->port_name);
         return;
     }
 
     spin_lock_irqsave(&ndlp->lock, iflags);
     ndlp->nlp_flag |= NLP_IN_DEV_LOSS;
 
     /* If there is a PLOGI in progress, and we are in a
      * NLP_NPR_2B_DISC state, don't turn off the flag.
      */
     if (ndlp->nlp_state != NLP_STE_PLOGI_ISSUE)
         ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
 
     /*
      * The backend does not expect any more calls associated with this
      * rport. Remove the association between rport and ndlp.
      */
     ndlp->fc4_xpt_flags &= ~SCSI_XPT_REGD;
     ((struct lpfc_rport_data *)rport->dd_data)->pnode = NULL;
     ndlp->rport = NULL;
     spin_unlock_irqrestore(&ndlp->lock, iflags);
 
     if (phba->worker_thread) {
         /* We need to hold the node by incrementing the reference
          * count until this queued work is done
          */
         evtp->evt_arg1 = lpfc_nlp_get(ndlp);
 
         spin_lock_irqsave(&phba->hbalock, iflags);
         if (evtp->evt_arg1) {
             evtp->evt = LPFC_EVT_DEV_LOSS;
             list_add_tail(&evtp->evt_listp, &phba->work_list);
             lpfc_worker_wake_up(phba);
         }
         spin_unlock_irqrestore(&phba->hbalock, iflags);
     } else {
         lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE,
                  "3188 worker thread is stopped %s x%06x, "
                  " rport x%px flg x%x load_flag x%x refcnt "
                  "%d\n", __func__, ndlp->nlp_DID,
                  ndlp->rport, ndlp->nlp_flag,
                  vport->load_flag, kref_read(&ndlp->kref));
         if (!(ndlp->fc4_xpt_flags & NVME_XPT_REGD)) {
             spin_lock_irqsave(&ndlp->lock, iflags);
             /* Node is in dev loss.  No further transaction. */
             ndlp->nlp_flag &= ~NLP_IN_DEV_LOSS;
             spin_unlock_irqrestore(&ndlp->lock, iflags);
             lpfc_disc_state_machine(vport, ndlp, NULL,
                         NLP_EVT_DEVICE_RM);
         }
 
     }
 
     return;
 }
 
 /**
  * lpfc_check_inactive_vmid_one - VMID inactivity checker for a vport
  * @vport: Pointer to vport context object.
  *
  * This function checks for idle VMID entries related to a particular vport. If
  * found unused/idle, free them accordingly.
  **/
 static void lpfc_check_inactive_vmid_one(struct lpfc_vport *vport)
 {
     u16 keep;
     u32 difftime = 0, r, bucket;
     u64 *lta;
     int cpu;
     struct lpfc_vmid *vmp;
 
     write_lock(&vport->vmid_lock);
 
     if (!vport->cur_vmid_cnt)
         goto out;
 
     /* iterate through the table */
     hash_for_each(vport->hash_table, bucket, vmp, hnode) {
         keep = 0;
         if (vmp->flag & LPFC_VMID_REGISTERED) {
             /* check if the particular VMID is in use */
             /* for all available per cpu variable */
             for_each_possible_cpu(cpu) {
                 /* if last access time is less than timeout */
                 lta = per_cpu_ptr(vmp->last_io_time, cpu);
                 if (!lta)
                     continue;
                 difftime = (jiffies) - (*lta);
                 if ((vport->vmid_inactivity_timeout *
                      JIFFIES_PER_HR) > difftime) {
                     keep = 1;
                     break;
                 }
             }
 
             /* if none of the cpus have been used by the vm, */
             /*  remove the entry if already registered */
             if (!keep) {
                 /* mark the entry for deregistration */
                 vmp->flag = LPFC_VMID_DE_REGISTER;
                 write_unlock(&vport->vmid_lock);
                 if (vport->vmid_priority_tagging)
                     r = lpfc_vmid_uvem(vport, vmp, false);
                 else
                     r = lpfc_vmid_cmd(vport,
                               SLI_CTAS_DAPP_IDENT,
                               vmp);
 
                 /* decrement number of active vms and mark */
                 /* entry in slot as free */
                 write_lock(&vport->vmid_lock);
                 if (!r) {
                     struct lpfc_vmid *ht = vmp;
 
                     vport->cur_vmid_cnt--;
                     ht->flag = LPFC_VMID_SLOT_FREE;
                     free_percpu(ht->last_io_time);
                     ht->last_io_time = NULL;
                     hash_del(&ht->hnode);
                 }
             }
         }
     }
  out:
     write_unlock(&vport->vmid_lock);
 }
 
 /**
  * lpfc_check_inactive_vmid - VMID inactivity checker
  * @phba: Pointer to hba context object.
  *
  * This function is called from the worker thread to determine if an entry in
  * the VMID table can be released since there was no I/O activity seen from that
  * particular VM for the specified time. When this happens, the entry in the
  * table is released and also the resources on the switch cleared.
  **/
 
 static void lpfc_check_inactive_vmid(struct lpfc_hba *phba)
 {
     struct lpfc_vport *vport;
     struct lpfc_vport **vports;
     int i;
 
     vports = lpfc_create_vport_work_array(phba);
     if (!vports)
         return;
 
     for (i = 0; i <= phba->max_vports; i++) {
         if ((!vports[i]) && (i == 0))
             vport = phba->pport;
         else
             vport = vports[i];
         if (!vport)
             break;
 
         lpfc_check_inactive_vmid_one(vport);
     }
     lpfc_destroy_vport_work_array(phba, vports);
 }
 
 /**
  * lpfc_check_nlp_post_devloss - Check to restore ndlp refcnt after devloss
  * @vport: Pointer to vport object.
  * @ndlp: Pointer to remote node object.
  *
  * If NLP_IN_RECOV_POST_DEV_LOSS flag was set due to outstanding recovery of
  * node during dev_loss_tmo processing, then this function restores the nlp_put
  * kref decrement from lpfc_dev_loss_tmo_handler.
  **/
 void
 lpfc_check_nlp_post_devloss(struct lpfc_vport *vport,
                 struct lpfc_nodelist *ndlp)
 {
     unsigned long iflags;
 
     spin_lock_irqsave(&ndlp->lock, iflags);
     if (ndlp->save_flags & NLP_IN_RECOV_POST_DEV_LOSS) {
         ndlp->save_flags &= ~NLP_IN_RECOV_POST_DEV_LOSS;
         spin_unlock_irqrestore(&ndlp->lock, iflags);
         lpfc_nlp_get(ndlp);
         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY | LOG_NODE,
                  "8438 Devloss timeout reversed on DID x%x "
                  "refcnt %d ndlp %p flag x%x "
                  "port_state = x%x\n",
                  ndlp->nlp_DID, kref_read(&ndlp->kref), ndlp,
                  ndlp->nlp_flag, vport->port_state);
         spin_lock_irqsave(&ndlp->lock, iflags);
     }
     spin_unlock_irqrestore(&ndlp->lock, iflags);
 }
 
 /**
  * lpfc_dev_loss_tmo_handler - Remote node devloss timeout handler
  * @ndlp: Pointer to remote node object.
  *
  * This function is called from the worker thread when devloss timeout timer
  * expires. For SLI4 host, this routine shall return 1 when at lease one
  * remote node, including this @ndlp, is still in use of FCF; otherwise, this
  * routine shall return 0 when there is no remote node is still in use of FCF
  * when devloss timeout happened to this @ndlp.
  **/
 static int
 lpfc_dev_loss_tmo_handler(struct lpfc_nodelist *ndlp)
 {
     struct lpfc_vport *vport;
     struct lpfc_hba   *phba;
     uint8_t *name;
     int warn_on = 0;
     int fcf_inuse = 0;
     bool recovering = false;
     struct fc_vport *fc_vport = NULL;
     unsigned long iflags;
 
     vport = ndlp->vport;
     name = (uint8_t *)&ndlp->nlp_portname;
     phba = vport->phba;
 
     spin_lock_irqsave(&ndlp->lock, iflags);
     ndlp->nlp_flag &= ~NLP_IN_DEV_LOSS;
     spin_unlock_irqrestore(&ndlp->lock, iflags);
 
     if (phba->sli_rev == LPFC_SLI_REV4)
         fcf_inuse = lpfc_fcf_inuse(phba);
 
     lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
                   "rport devlosstmo:did:x%x type:x%x id:x%x",
                   ndlp->nlp_DID, ndlp->nlp_type, ndlp->nlp_sid);
 
     lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE,
              "3182 %s x%06x, nflag x%x xflags x%x refcnt %d\n",
              __func__, ndlp->nlp_DID, ndlp->nlp_flag,
              ndlp->fc4_xpt_flags, kref_read(&ndlp->kref));
 
     /* If the driver is recovering the rport, ignore devloss. */
     if (ndlp->nlp_state == NLP_STE_MAPPED_NODE) {
         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
                  "0284 Devloss timeout Ignored on "
                  "WWPN %x:%x:%x:%x:%x:%x:%x:%x "
                  "NPort x%x\n",
                  *name, *(name+1), *(name+2), *(name+3),
                  *(name+4), *(name+5), *(name+6), *(name+7),
                  ndlp->nlp_DID);
         return fcf_inuse;
     }
 
     /* Fabric nodes are done. */
     if (ndlp->nlp_type & NLP_FABRIC) {
         spin_lock_irqsave(&ndlp->lock, iflags);
         /* In massive vport configuration settings, it's possible
          * dev_loss_tmo fired during node recovery.  So, check if
          * fabric nodes are in discovery states outstanding.
          */
         switch (ndlp->nlp_DID) {
         case Fabric_DID:
             fc_vport = vport->fc_vport;
             if (fc_vport &&
                 fc_vport->vport_state == FC_VPORT_INITIALIZING)
                 recovering = true;
             break;
         case Fabric_Cntl_DID:
             if (ndlp->nlp_flag & NLP_REG_LOGIN_SEND)
                 recovering = true;
             break;
         case FDMI_DID:
             fallthrough;
         case NameServer_DID:
             if (ndlp->nlp_state >= NLP_STE_PLOGI_ISSUE &&
                 ndlp->nlp_state <= NLP_STE_REG_LOGIN_ISSUE)
                 recovering = true;
             break;
         }
         spin_unlock_irqrestore(&ndlp->lock, iflags);
 
         /* Mark an NLP_IN_RECOV_POST_DEV_LOSS flag to know if reversing
          * the following lpfc_nlp_put is necessary after fabric node is
          * recovered.
          */
         if (recovering) {
             lpfc_printf_vlog(vport, KERN_INFO,
                      LOG_DISCOVERY | LOG_NODE,
                      "8436 Devloss timeout marked on "
                      "DID x%x refcnt %d ndlp %p "
                      "flag x%x port_state = x%x\n",
                      ndlp->nlp_DID, kref_read(&ndlp->kref),
                      ndlp, ndlp->nlp_flag,
                      vport->port_state);
             spin_lock_irqsave(&ndlp->lock, iflags);
             ndlp->save_flags |= NLP_IN_RECOV_POST_DEV_LOSS;
             spin_unlock_irqrestore(&ndlp->lock, iflags);
         } else if (ndlp->nlp_state == NLP_STE_UNMAPPED_NODE) {
             /* Fabric node fully recovered before this dev_loss_tmo
              * queue work is processed.  Thus, ignore the
              * dev_loss_tmo event.
              */
             lpfc_printf_vlog(vport, KERN_INFO,
                      LOG_DISCOVERY | LOG_NODE,
                      "8437 Devloss timeout ignored on "
                      "DID x%x refcnt %d ndlp %p "
                      "flag x%x port_state = x%x\n",
                      ndlp->nlp_DID, kref_read(&ndlp->kref),
                      ndlp, ndlp->nlp_flag,
                      vport->port_state);
             return fcf_inuse;
         }
 
         lpfc_nlp_put(ndlp);
         return fcf_inuse;
     }
 
     if (ndlp->nlp_sid != NLP_NO_SID) {
         warn_on = 1;
         lpfc_sli_abort_iocb(vport, ndlp->nlp_sid, 0, LPFC_CTX_TGT);
     }
 
     if (warn_on) {
         lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
                  "0203 Devloss timeout on "
                  "WWPN %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x "
                  "NPort x%06x Data: x%x x%x x%x refcnt %d\n",
                  *name, *(name+1), *(name+2), *(name+3),
                  *(name+4), *(name+5), *(name+6), *(name+7),
                  ndlp->nlp_DID, ndlp->nlp_flag,
                  ndlp->nlp_state, ndlp->nlp_rpi,
                  kref_read(&ndlp->kref));
     } else {
         lpfc_printf_vlog(vport, KERN_INFO, LOG_TRACE_EVENT,
                  "0204 Devloss timeout on "
                  "WWPN %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x "
                  "NPort x%06x Data: x%x x%x x%x\n",
                  *name, *(name+1), *(name+2), *(name+3),
                  *(name+4), *(name+5), *(name+6), *(name+7),
                  ndlp->nlp_DID, ndlp->nlp_flag,
                  ndlp->nlp_state, ndlp->nlp_rpi);
     }
 
     /* If we are devloss, but we are in the process of rediscovering the
      * ndlp, don't issue a NLP_EVT_DEVICE_RM event.
      */
     if (ndlp->nlp_state >= NLP_STE_PLOGI_ISSUE &&
         ndlp->nlp_state <= NLP_STE_PRLI_ISSUE) {
         return fcf_inuse;
     }
 
     if (!(ndlp->fc4_xpt_flags & NVME_XPT_REGD))
         lpfc_disc_state_machine(vport, ndlp, NULL, NLP_EVT_DEVICE_RM);
 
     return fcf_inuse;
 }
 
 static void lpfc_check_vmid_qfpa_issue(struct lpfc_hba *phba)
 {
     struct lpfc_vport *vport;
     struct lpfc_vport **vports;
     int i;
 
     vports = lpfc_create_vport_work_array(phba);
     if (!vports)
         return;
 
     for (i = 0; i <= phba->max_vports; i++) {
         if ((!vports[i]) && (i == 0))
             vport = phba->pport;
         else
             vport = vports[i];
         if (!vport)
             break;
 
         if (vport->vmid_flag & LPFC_VMID_ISSUE_QFPA) {
             if (!lpfc_issue_els_qfpa(vport))
                 vport->vmid_flag &= ~LPFC_VMID_ISSUE_QFPA;
         }
     }
     lpfc_destroy_vport_work_array(phba, vports);
 }
 
 /**
  * lpfc_sli4_post_dev_loss_tmo_handler - SLI4 post devloss timeout handler
  * @phba: Pointer to hba context object.
  * @fcf_inuse: SLI4 FCF in-use state reported from devloss timeout handler.
  * @nlp_did: remote node identifer with devloss timeout.
  *
  * This function is called from the worker thread after invoking devloss
  * timeout handler and releasing the reference count for the ndlp with
  * which the devloss timeout was handled for SLI4 host. For the devloss
  * timeout of the last remote node which had been in use of FCF, when this
  * routine is invoked, it shall be guaranteed that none of the remote are
  * in-use of FCF. When devloss timeout to the last remote using the FCF,
  * if the FIP engine is neither in FCF table scan process nor roundrobin
  * failover process, the in-use FCF shall be unregistered. If the FIP
  * engine is in FCF discovery process, the devloss timeout state shall
  * be set for either the FCF table scan process or roundrobin failover
  * process to unregister the in-use FCF.
  **/
 static void
 lpfc_sli4_post_dev_loss_tmo_handler(struct lpfc_hba *phba, int fcf_inuse,
                     uint32_t nlp_did)
 {
     /* If devloss timeout happened to a remote node when FCF had no
      * longer been in-use, do nothing.
      */
     if (!fcf_inuse)
         return;
 
     if ((phba->hba_flag & HBA_FIP_SUPPORT) && !lpfc_fcf_inuse(phba)) {
         spin_lock_irq(&phba->hbalock);
         if (phba->fcf.fcf_flag & FCF_DISCOVERY) {
             if (phba->hba_flag & HBA_DEVLOSS_TMO) {
                 spin_unlock_irq(&phba->hbalock);
                 return;
             }
             phba->hba_flag |= HBA_DEVLOSS_TMO;
             lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
                     "2847 Last remote node (x%x) using "
                     "FCF devloss tmo\n", nlp_did);
         }
         if (phba->fcf.fcf_flag & FCF_REDISC_PROG) {
             spin_unlock_irq(&phba->hbalock);
             lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
                     "2868 Devloss tmo to FCF rediscovery "
                     "in progress\n");
             return;
         }
         if (!(phba->hba_flag & (FCF_TS_INPROG | FCF_RR_INPROG))) {
             spin_unlock_irq(&phba->hbalock);
             lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
                     "2869 Devloss tmo to idle FIP engine, "
                     "unreg in-use FCF and rescan.\n");
             /* Unregister in-use FCF and rescan */
             lpfc_unregister_fcf_rescan(phba);
             return;
         }
         spin_unlock_irq(&phba->hbalock);
         if (phba->hba_flag & FCF_TS_INPROG)
             lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
                     "2870 FCF table scan in progress\n");
         if (phba->hba_flag & FCF_RR_INPROG)
             lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
                     "2871 FLOGI roundrobin FCF failover "
                     "in progress\n");
     }
     lpfc_unregister_unused_fcf(phba);
 }
 
 /**
  * lpfc_alloc_fast_evt - Allocates data structure for posting event
  * @phba: Pointer to hba context object.
  *
  * This function is called from the functions which need to post
  * events from interrupt context. This function allocates data
  * structure required for posting event. It also keeps track of
  * number of events pending and prevent event storm when there are
  * too many events.
  **/
 struct lpfc_fast_path_event *
 lpfc_alloc_fast_evt(struct lpfc_hba *phba) {
     struct lpfc_fast_path_event *ret;
 
     /* If there are lot of fast event do not exhaust memory due to this */
     if (atomic_read(&phba->fast_event_count) > LPFC_MAX_EVT_COUNT)
         return NULL;
 
     ret = kzalloc(sizeof(struct lpfc_fast_path_event),
             GFP_ATOMIC);
     if (ret) {
         atomic_inc(&phba->fast_event_count);
         INIT_LIST_HEAD(&ret->work_evt.evt_listp);
         ret->work_evt.evt = LPFC_EVT_FASTPATH_MGMT_EVT;
     }
     return ret;
 }
 
 /**
  * lpfc_free_fast_evt - Frees event data structure
  * @phba: Pointer to hba context object.
  * @evt:  Event object which need to be freed.
  *
  * This function frees the data structure required for posting
  * events.
  **/
 void
 lpfc_free_fast_evt(struct lpfc_hba *phba,
         struct lpfc_fast_path_event *evt) {
 
     atomic_dec(&phba->fast_event_count);
     kfree(evt);
 }
 
 /**
  * lpfc_send_fastpath_evt - Posts events generated from fast path
  * @phba: Pointer to hba context object.
  * @evtp: Event data structure.
  *
  * This function is called from worker thread, when the interrupt
  * context need to post an event. This function posts the event
  * to fc transport netlink interface.
  **/
 static void
 lpfc_send_fastpath_evt(struct lpfc_hba *phba,
         struct lpfc_work_evt *evtp)
 {
     unsigned long evt_category, evt_sub_category;
     struct lpfc_fast_path_event *fast_evt_data;
     char *evt_data;
     uint32_t evt_data_size;
     struct Scsi_Host *shost;
 
     fast_evt_data = container_of(evtp, struct lpfc_fast_path_event,
         work_evt);
 
     evt_category = (unsigned long) fast_evt_data->un.fabric_evt.event_type;
     evt_sub_category = (unsigned long) fast_evt_data->un.
             fabric_evt.subcategory;
     shost = lpfc_shost_from_vport(fast_evt_data->vport);
     if (evt_category == FC_REG_FABRIC_EVENT) {
         if (evt_sub_category == LPFC_EVENT_FCPRDCHKERR) {
             evt_data = (char *) &fast_evt_data->un.read_check_error;
             evt_data_size = sizeof(fast_evt_data->un.
                 read_check_error);
         } else if ((evt_sub_category == LPFC_EVENT_FABRIC_BUSY) ||
             (evt_sub_category == LPFC_EVENT_PORT_BUSY)) {
             evt_data = (char *) &fast_evt_data->un.fabric_evt;
             evt_data_size = sizeof(fast_evt_data->un.fabric_evt);
         } else {
             lpfc_free_fast_evt(phba, fast_evt_data);
             return;
         }
     } else if (evt_category == FC_REG_SCSI_EVENT) {
         switch (evt_sub_category) {
         case LPFC_EVENT_QFULL:
         case LPFC_EVENT_DEVBSY:
             evt_data = (char *) &fast_evt_data->un.scsi_evt;
             evt_data_size = sizeof(fast_evt_data->un.scsi_evt);
             break;
         case LPFC_EVENT_CHECK_COND:
             evt_data = (char *) &fast_evt_data->un.check_cond_evt;
             evt_data_size =  sizeof(fast_evt_data->un.
                 check_cond_evt);
             break;
         case LPFC_EVENT_VARQUEDEPTH:
             evt_data = (char *) &fast_evt_data->un.queue_depth_evt;
             evt_data_size = sizeof(fast_evt_data->un.
                 queue_depth_evt);
             break;
         default:
             lpfc_free_fast_evt(phba, fast_evt_data);
             return;
         }
     } else {
         lpfc_free_fast_evt(phba, fast_evt_data);
         return;
     }
 
     if (phba->cfg_enable_fc4_type != LPFC_ENABLE_NVME)
         fc_host_post_vendor_event(shost,
             fc_get_event_number(),
             evt_data_size,
             evt_data,
             LPFC_NL_VENDOR_ID);
 
     lpfc_free_fast_evt(phba, fast_evt_data);
     return;
 }
 
 static void
 lpfc_work_list_done(struct lpfc_hba *phba)
 {
     struct lpfc_work_evt  *evtp = NULL;
     struct lpfc_nodelist  *ndlp;
     int free_evt;
     int fcf_inuse;
     uint32_t nlp_did;
     bool hba_pci_err;
 
     spin_lock_irq(&phba->hbalock);
     while (!list_empty(&phba->work_list)) {
         list_remove_head((&phba->work_list), evtp, typeof(*evtp),
                  evt_listp);
         spin_unlock_irq(&phba->hbalock);
         hba_pci_err = test_bit(HBA_PCI_ERR, &phba->bit_flags);
         free_evt = 1;
         switch (evtp->evt) {
         case LPFC_EVT_ELS_RETRY:
             ndlp = (struct lpfc_nodelist *) (evtp->evt_arg1);
             if (!hba_pci_err) {
                 lpfc_els_retry_delay_handler(ndlp);
                 free_evt = 0; /* evt is part of ndlp */
             }
             /* decrement the node reference count held
              * for this queued work
              */
             lpfc_nlp_put(ndlp);
             break;
         case LPFC_EVT_DEV_LOSS:
             ndlp = (struct lpfc_nodelist *)(evtp->evt_arg1);
             fcf_inuse = lpfc_dev_loss_tmo_handler(ndlp);
             free_evt = 0;
             /* decrement the node reference count held for
              * this queued work
              */
             nlp_did = ndlp->nlp_DID;
             lpfc_nlp_put(ndlp);
             if (phba->sli_rev == LPFC_SLI_REV4)
                 lpfc_sli4_post_dev_loss_tmo_handler(phba,
                                     fcf_inuse,
                                     nlp_did);
             break;
         case LPFC_EVT_RECOVER_PORT:
             ndlp = (struct lpfc_nodelist *)(evtp->evt_arg1);
             if (!hba_pci_err) {
                 lpfc_sli_abts_recover_port(ndlp->vport, ndlp);
                 free_evt = 0;
             }
             /* decrement the node reference count held for
              * this queued work
              */
             lpfc_nlp_put(ndlp);
             break;
         case LPFC_EVT_ONLINE:
             if (phba->link_state < LPFC_LINK_DOWN)
                 *(int *) (evtp->evt_arg1) = lpfc_online(phba);
             else
                 *(int *) (evtp->evt_arg1) = 0;
             complete((struct completion *)(evtp->evt_arg2));
             break;
         case LPFC_EVT_OFFLINE_PREP:
             if (phba->link_state >= LPFC_LINK_DOWN)
                 lpfc_offline_prep(phba, LPFC_MBX_WAIT);
             *(int *)(evtp->evt_arg1) = 0;
             complete((struct completion *)(evtp->evt_arg2));
             break;
         case LPFC_EVT_OFFLINE:
             lpfc_offline(phba);
             lpfc_sli_brdrestart(phba);
             *(int *)(evtp->evt_arg1) =
                 lpfc_sli_brdready(phba, HS_FFRDY | HS_MBRDY);
             lpfc_unblock_mgmt_io(phba);
             complete((struct completion *)(evtp->evt_arg2));
             break;
         case LPFC_EVT_WARM_START:
             lpfc_offline(phba);
             lpfc_reset_barrier(phba);
             lpfc_sli_brdreset(phba);
             lpfc_hba_down_post(phba);
             *(int *)(evtp->evt_arg1) =
                 lpfc_sli_brdready(phba, HS_MBRDY);
             lpfc_unblock_mgmt_io(phba);
             complete((struct completion *)(evtp->evt_arg2));
             break;
         case LPFC_EVT_KILL:
             lpfc_offline(phba);
             *(int *)(evtp->evt_arg1)
                 = (phba->pport->stopped)
                         ? 0 : lpfc_sli_brdkill(phba);
             lpfc_unblock_mgmt_io(phba);
             complete((struct completion *)(evtp->evt_arg2));
             break;
         case LPFC_EVT_FASTPATH_MGMT_EVT:
             lpfc_send_fastpath_evt(phba, evtp);
             free_evt = 0;
             break;
         case LPFC_EVT_RESET_HBA:
             if (!(phba->pport->load_flag & FC_UNLOADING))
                 lpfc_reset_hba(phba);
             break;
         }
         if (free_evt)
             kfree(evtp);
         spin_lock_irq(&phba->hbalock);
     }
     spin_unlock_irq(&phba->hbalock);
 
 }
 
 static void
 lpfc_work_done(struct lpfc_hba *phba)
 {
     struct lpfc_sli_ring *pring;
     uint32_t ha_copy, status, control, work_port_events;
     struct lpfc_vport **vports;
     struct lpfc_vport *vport;
     int i;
     bool hba_pci_err;
 
     hba_pci_err = test_bit(HBA_PCI_ERR, &phba->bit_flags);
     spin_lock_irq(&phba->hbalock);
     ha_copy = phba->work_ha;
     phba->work_ha = 0;
     spin_unlock_irq(&phba->hbalock);
     if (hba_pci_err)
         ha_copy = 0;
 
     /* First, try to post the next mailbox command to SLI4 device */
     if (phba->pci_dev_grp == LPFC_PCI_DEV_OC && !hba_pci_err)
         lpfc_sli4_post_async_mbox(phba);
 
     if (ha_copy & HA_ERATT) {
         /* Handle the error attention event */
         lpfc_handle_eratt(phba);
 
         if (phba->fw_dump_cmpl) {
             complete(phba->fw_dump_cmpl);
             phba->fw_dump_cmpl = NULL;
         }
     }
 
     if (ha_copy & HA_MBATT)
         lpfc_sli_handle_mb_event(phba);
 
     if (ha_copy & HA_LATT)
         lpfc_handle_latt(phba);
 
     /* Handle VMID Events */
     if (lpfc_is_vmid_enabled(phba) && !hba_pci_err) {
         if (phba->pport->work_port_events &
             WORKER_CHECK_VMID_ISSUE_QFPA) {
             lpfc_check_vmid_qfpa_issue(phba);
             phba->pport->work_port_events &=
                 ~WORKER_CHECK_VMID_ISSUE_QFPA;
         }
         if (phba->pport->work_port_events &
             WORKER_CHECK_INACTIVE_VMID) {
             lpfc_check_inactive_vmid(phba);
             phba->pport->work_port_events &=
                 ~WORKER_CHECK_INACTIVE_VMID;
         }
     }
 
     /* Process SLI4 events */
     if (phba->pci_dev_grp == LPFC_PCI_DEV_OC) {
         if (phba->hba_flag & HBA_RRQ_ACTIVE)
             lpfc_handle_rrq_active(phba);
         if (phba->hba_flag & ELS_XRI_ABORT_EVENT)
             lpfc_sli4_els_xri_abort_event_proc(phba);
         if (phba->hba_flag & ASYNC_EVENT)
             lpfc_sli4_async_event_proc(phba);
         if (phba->hba_flag & HBA_POST_RECEIVE_BUFFER) {
             spin_lock_irq(&phba->hbalock);
             phba->hba_flag &= ~HBA_POST_RECEIVE_BUFFER;
             spin_unlock_irq(&phba->hbalock);
             lpfc_sli_hbqbuf_add_hbqs(phba, LPFC_ELS_HBQ);
         }
         if (phba->fcf.fcf_flag & FCF_REDISC_EVT)
             lpfc_sli4_fcf_redisc_event_proc(phba);
     }
 
     vports = lpfc_create_vport_work_array(phba);
     if (vports != NULL)
         for (i = 0; i <= phba->max_vports; i++) {
             /*
              * We could have no vports in array if unloading, so if
              * this happens then just use the pport
              */
             if (vports[i] == NULL && i == 0)
                 vport = phba->pport;
             else
                 vport = vports[i];
             if (vport == NULL)
                 break;
             spin_lock_irq(&vport->work_port_lock);
             work_port_events = vport->work_port_events;
             vport->work_port_events &= ~work_port_events;
             spin_unlock_irq(&vport->work_port_lock);
             if (hba_pci_err)
                 continue;
             if (work_port_events & WORKER_DISC_TMO)
                 lpfc_disc_timeout_handler(vport);
             if (work_port_events & WORKER_ELS_TMO)
                 lpfc_els_timeout_handler(vport);
             if (work_port_events & WORKER_HB_TMO)
                 lpfc_hb_timeout_handler(phba);
             if (work_port_events & WORKER_MBOX_TMO)
                 lpfc_mbox_timeout_handler(phba);
             if (work_port_events & WORKER_FABRIC_BLOCK_TMO)
                 lpfc_unblock_fabric_iocbs(phba);
             if (work_port_events & WORKER_RAMP_DOWN_QUEUE)
                 lpfc_ramp_down_queue_handler(phba);
             if (work_port_events & WORKER_DELAYED_DISC_TMO)
                 lpfc_delayed_disc_timeout_handler(vport);
         }
     lpfc_destroy_vport_work_array(phba, vports);
 
     pring = lpfc_phba_elsring(phba);
     status = (ha_copy & (HA_RXMASK  << (4*LPFC_ELS_RING)));
     status >>= (4*LPFC_ELS_RING);
     if (pring && (status & HA_RXMASK ||
               pring->flag & LPFC_DEFERRED_RING_EVENT ||
               phba->hba_flag & HBA_SP_QUEUE_EVT)) {
         if (pring->flag & LPFC_STOP_IOCB_EVENT) {
             pring->flag |= LPFC_DEFERRED_RING_EVENT;
             /* Preserve legacy behavior. */
             if (!(phba->hba_flag & HBA_SP_QUEUE_EVT))
                 set_bit(LPFC_DATA_READY, &phba->data_flags);
         } else {
             /* Driver could have abort request completed in queue
              * when link goes down.  Allow for this transition.
              */
             if (phba->link_state >= LPFC_LINK_DOWN ||
                 phba->link_flag & LS_MDS_LOOPBACK) {
                 pring->flag &= ~LPFC_DEFERRED_RING_EVENT;
                 lpfc_sli_handle_slow_ring_event(phba, pring,
                                 (status &
                                 HA_RXMASK));
             }
         }
         if (phba->sli_rev == LPFC_SLI_REV4)
             lpfc_drain_txq(phba);
         /*
          * Turn on Ring interrupts
          */
         if (phba->sli_rev <= LPFC_SLI_REV3) {
             spin_lock_irq(&phba->hbalock);
             control = readl(phba->HCregaddr);
             if (!(control & (HC_R0INT_ENA << LPFC_ELS_RING))) {
                 lpfc_debugfs_slow_ring_trc(phba,
                     "WRK Enable ring: cntl:x%x hacopy:x%x",
                     control, ha_copy, 0);
 
                 control |= (HC_R0INT_ENA << LPFC_ELS_RING);
                 writel(control, phba->HCregaddr);
                 readl(phba->HCregaddr); /* flush */
             } else {
                 lpfc_debugfs_slow_ring_trc(phba,
                     "WRK Ring ok:     cntl:x%x hacopy:x%x",
                     control, ha_copy, 0);
             }
             spin_unlock_irq(&phba->hbalock);
         }
     }
     lpfc_work_list_done(phba);
 }
 
 int
 lpfc_do_work(void *p)
 {
     struct lpfc_hba *phba = p;
     int rc;
 
     set_user_nice(current, MIN_NICE);
     current->flags |= PF_NOFREEZE;
     phba->data_flags = 0;
 
     while (!kthread_should_stop()) {
         /* wait and check worker queue activities */
         rc = wait_event_interruptible(phba->work_waitq,
                     (test_and_clear_bit(LPFC_DATA_READY,
                                 &phba->data_flags)
                      || kthread_should_stop()));
         /* Signal wakeup shall terminate the worker thread */
         if (rc) {
             lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                     "0433 Wakeup on signal: rc=x%x\n", rc);
             break;
         }
 
         /* Attend pending lpfc data processing */
         lpfc_work_done(phba);
     }
     phba->worker_thread = NULL;
     lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
             "0432 Worker thread stopped.\n");
     return 0;
 }
 
 /*
  * This is only called to handle FC worker events. Since this a rare
  * occurrence, we allocate a struct lpfc_work_evt structure here instead of
  * embedding it in the IOCB.
  */
 int
 lpfc_workq_post_event(struct lpfc_hba *phba, void *arg1, void *arg2,
               uint32_t evt)
 {
     struct lpfc_work_evt  *evtp;
     unsigned long flags;
 
     /*
      * All Mailbox completions and LPFC_ELS_RING rcv ring IOCB events will
      * be queued to worker thread for processing
      */
     evtp = kmalloc(sizeof(struct lpfc_work_evt), GFP_ATOMIC);
     if (!evtp)
         return 0;
 
     evtp->evt_arg1  = arg1;
     evtp->evt_arg2  = arg2;
     evtp->evt       = evt;
 
     spin_lock_irqsave(&phba->hbalock, flags);
     list_add_tail(&evtp->evt_listp, &phba->work_list);
     spin_unlock_irqrestore(&phba->hbalock, flags);
 
     lpfc_worker_wake_up(phba);
 
     return 1;
 }
 
 void
 lpfc_cleanup_rpis(struct lpfc_vport *vport, int remove)
 {
     struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
     struct lpfc_hba  *phba = vport->phba;
     struct lpfc_nodelist *ndlp, *next_ndlp;
 
     list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) {
         if (ndlp->nlp_state == NLP_STE_UNUSED_NODE) {
             /* It's possible the FLOGI to the fabric node never
              * successfully completed and never registered with the
              * transport.  In this case there is no way to clean up
              * the node.
              */
             if (ndlp->nlp_DID == Fabric_DID) {
                 if (ndlp->nlp_prev_state ==
                     NLP_STE_UNUSED_NODE &&
                     !ndlp->fc4_xpt_flags)
                     lpfc_nlp_put(ndlp);
             }
             continue;
         }
 
         if ((phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN) ||
             ((vport->port_type == LPFC_NPIV_PORT) &&
              ((ndlp->nlp_DID == NameServer_DID) ||
               (ndlp->nlp_DID == FDMI_DID) ||
               (ndlp->nlp_DID == Fabric_Cntl_DID))))
             lpfc_unreg_rpi(vport, ndlp);
 
         /* Leave Fabric nodes alone on link down */
         if ((phba->sli_rev < LPFC_SLI_REV4) &&
             (!remove && ndlp->nlp_type & NLP_FABRIC))
             continue;
 
         /* Notify transport of connectivity loss to trigger cleanup. */
         if (phba->nvmet_support &&
             ndlp->nlp_state == NLP_STE_UNMAPPED_NODE)
             lpfc_nvmet_invalidate_host(phba, ndlp);
 
         lpfc_disc_state_machine(vport, ndlp, NULL,
                     remove
                     ? NLP_EVT_DEVICE_RM
                     : NLP_EVT_DEVICE_RECOVERY);
     }
     if (phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN) {
         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);
     }
 }
 
 void
 lpfc_port_link_failure(struct lpfc_vport *vport)
 {
     lpfc_vport_set_state(vport, FC_VPORT_LINKDOWN);
 
     /* Cleanup any outstanding received buffers */
     lpfc_cleanup_rcv_buffers(vport);
 
     /* Cleanup any outstanding RSCN activity */
     lpfc_els_flush_rscn(vport);
 
     /* Cleanup any outstanding ELS commands */
     lpfc_els_flush_cmd(vport);
 
     lpfc_cleanup_rpis(vport, 0);
 
     /* Turn off discovery timer if its running */
     lpfc_can_disctmo(vport);
 }
 
 void
 lpfc_linkdown_port(struct lpfc_vport *vport)
 {
     struct lpfc_hba *phba = vport->phba;
     struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
 
     if (vport->cfg_enable_fc4_type != LPFC_ENABLE_NVME)
         fc_host_post_event(shost, fc_get_event_number(),
                    FCH_EVT_LINKDOWN, 0);
 
     lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
         "Link Down:       state:x%x rtry:x%x flg:x%x",
         vport->port_state, vport->fc_ns_retry, vport->fc_flag);
 
     lpfc_port_link_failure(vport);
 
     /* Stop delayed Nport discovery */
     spin_lock_irq(shost->host_lock);
     vport->fc_flag &= ~FC_DISC_DELAYED;
     spin_unlock_irq(shost->host_lock);
     del_timer_sync(&vport->delayed_disc_tmo);
 
     if (phba->sli_rev == LPFC_SLI_REV4 &&
         vport->port_type == LPFC_PHYSICAL_PORT &&
         phba->sli4_hba.fawwpn_flag & LPFC_FAWWPN_CONFIG) {
         /* Assume success on link up */
         phba->sli4_hba.fawwpn_flag |= LPFC_FAWWPN_FABRIC;
     }
 }
 
 int
 lpfc_linkdown(struct lpfc_hba *phba)
 {
     struct lpfc_vport *vport = phba->pport;
     struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
     struct lpfc_vport **vports;
     LPFC_MBOXQ_t          *mb;
     int i;
     int offline;
 
     if (phba->link_state == LPFC_LINK_DOWN)
         return 0;
 
     /* Block all SCSI stack I/Os */
     lpfc_scsi_dev_block(phba);
     offline = pci_channel_offline(phba->pcidev);
 
     phba->defer_flogi_acc_flag = false;
 
     /* Clear external loopback plug detected flag */
     phba->link_flag &= ~LS_EXTERNAL_LOOPBACK;
 
     spin_lock_irq(&phba->hbalock);
     phba->fcf.fcf_flag &= ~(FCF_AVAILABLE | FCF_SCAN_DONE);
     spin_unlock_irq(&phba->hbalock);
     if (phba->link_state > LPFC_LINK_DOWN) {
         phba->link_state = LPFC_LINK_DOWN;
         if (phba->sli4_hba.conf_trunk) {
             phba->trunk_link.link0.state = 0;
             phba->trunk_link.link1.state = 0;
             phba->trunk_link.link2.state = 0;
             phba->trunk_link.link3.state = 0;
             phba->sli4_hba.link_state.logical_speed =
                         LPFC_LINK_SPEED_UNKNOWN;
         }
         spin_lock_irq(shost->host_lock);
         phba->pport->fc_flag &= ~FC_LBIT;
         spin_unlock_irq(shost->host_lock);
     }
     vports = lpfc_create_vport_work_array(phba);
     if (vports != NULL) {
         for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
             /* Issue a LINK DOWN event to all nodes */
             lpfc_linkdown_port(vports[i]);
 
             vports[i]->fc_myDID = 0;
 
             if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) ||
                 (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME)) {
                 if (phba->nvmet_support)
                     lpfc_nvmet_update_targetport(phba);
                 else
                     lpfc_nvme_update_localport(vports[i]);
             }
         }
     }
     lpfc_destroy_vport_work_array(phba, vports);
 
     /* Clean up any SLI3 firmware default rpi's */
     if (phba->sli_rev > LPFC_SLI_REV3 || offline)
         goto skip_unreg_did;
 
     mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
     if (mb) {
         lpfc_unreg_did(phba, 0xffff, LPFC_UNREG_ALL_DFLT_RPIS, mb);
         mb->vport = vport;
         mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
         if (lpfc_sli_issue_mbox(phba, mb, MBX_NOWAIT)
             == MBX_NOT_FINISHED) {
             mempool_free(mb, phba->mbox_mem_pool);
         }
     }
 
  skip_unreg_did:
     /* Setup myDID for link up if we are in pt2pt mode */
     if (phba->pport->fc_flag & FC_PT2PT) {
         mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
         if (mb) {
             lpfc_config_link(phba, mb);
             mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
             mb->vport = vport;
             if (lpfc_sli_issue_mbox(phba, mb, MBX_NOWAIT)
                 == MBX_NOT_FINISHED) {
                 mempool_free(mb, phba->mbox_mem_pool);
             }
         }
         spin_lock_irq(shost->host_lock);
         phba->pport->fc_flag &= ~(FC_PT2PT | FC_PT2PT_PLOGI);
         phba->pport->rcv_flogi_cnt = 0;
         spin_unlock_irq(shost->host_lock);
     }
     return 0;
 }
 
 static void
 lpfc_linkup_cleanup_nodes(struct lpfc_vport *vport)
 {
     struct lpfc_nodelist *ndlp;
 
     list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
         ndlp->nlp_fc4_type &= ~(NLP_FC4_FCP | NLP_FC4_NVME);
 
         if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
             continue;
         if (ndlp->nlp_type & NLP_FABRIC) {
             /* On Linkup its safe to clean up the ndlp
              * from Fabric connections.
              */
             if (ndlp->nlp_DID != Fabric_DID)
                 lpfc_unreg_rpi(vport, ndlp);
             lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
         } else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) {
             /* Fail outstanding IO now since device is
              * marked for PLOGI.
              */
             lpfc_unreg_rpi(vport, ndlp);
         }
     }
 }
 
 static void
 lpfc_linkup_port(struct lpfc_vport *vport)
 {
     struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
     struct lpfc_hba  *phba = vport->phba;
 
     if ((vport->load_flag & FC_UNLOADING) != 0)
         return;
 
     lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
         "Link Up:         top:x%x speed:x%x flg:x%x",
         phba->fc_topology, phba->fc_linkspeed, phba->link_flag);
 
     /* If NPIV is not enabled, only bring the physical port up */
     if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
         (vport != phba->pport))
         return;
 
     if (vport->cfg_enable_fc4_type != LPFC_ENABLE_NVME)
         fc_host_post_event(shost, fc_get_event_number(),
                    FCH_EVT_LINKUP, 0);
 
     spin_lock_irq(shost->host_lock);
     vport->fc_flag &= ~(FC_PT2PT | FC_PT2PT_PLOGI | FC_ABORT_DISCOVERY |
                 FC_RSCN_MODE | FC_NLP_MORE | FC_RSCN_DISCOVERY);
     vport->fc_flag |= FC_NDISC_ACTIVE;
     vport->fc_ns_retry = 0;
     spin_unlock_irq(shost->host_lock);
     lpfc_setup_fdmi_mask(vport);
 
     lpfc_linkup_cleanup_nodes(vport);
 }
 
 static int
 lpfc_linkup(struct lpfc_hba *phba)
 {
     struct lpfc_vport **vports;
     int i;
     struct Scsi_Host  *shost = lpfc_shost_from_vport(phba->pport);
 
     phba->link_state = LPFC_LINK_UP;
 
     /* Unblock fabric iocbs if they are blocked */
     clear_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags);
     del_timer_sync(&phba->fabric_block_timer);
 
     vports = lpfc_create_vport_work_array(phba);
     if (vports != NULL)
         for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++)
             lpfc_linkup_port(vports[i]);
     lpfc_destroy_vport_work_array(phba, vports);
 
     /* Clear the pport flogi counter in case the link down was
      * absorbed without an ACQE. No lock here - in worker thread
      * and discovery is synchronized.
      */
     spin_lock_irq(shost->host_lock);
     phba->pport->rcv_flogi_cnt = 0;
     spin_unlock_irq(shost->host_lock);
 
     /* reinitialize initial HBA flag */
     phba->hba_flag &= ~(HBA_FLOGI_ISSUED | HBA_RHBA_CMPL);
     phba->defer_flogi_acc_flag = false;
 
     return 0;
 }
 
 /*
  * This routine handles processing a CLEAR_LA mailbox
  * command upon completion. It is setup in the LPFC_MBOXQ
  * as the completion routine when the command is
  * handed off to the SLI layer. SLI3 only.
  */
 static void
 lpfc_mbx_cmpl_clear_la(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_sli   *psli = &phba->sli;
     MAILBOX_t *mb = &pmb->u.mb;
     uint32_t control;
 
     /* Since we don't do discovery right now, turn these off here */
     psli->sli3_ring[LPFC_EXTRA_RING].flag &= ~LPFC_STOP_IOCB_EVENT;
     psli->sli3_ring[LPFC_FCP_RING].flag &= ~LPFC_STOP_IOCB_EVENT;
 
     /* Check for error */
     if ((mb->mbxStatus) && (mb->mbxStatus != 0x1601)) {
         /* CLEAR_LA mbox error <mbxStatus> state <hba_state> */
         lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
                  "0320 CLEAR_LA mbxStatus error x%x hba "
                  "state x%x\n",
                  mb->mbxStatus, vport->port_state);
         phba->link_state = LPFC_HBA_ERROR;
         goto out;
     }
 
     if (vport->port_type == LPFC_PHYSICAL_PORT)
         phba->link_state = LPFC_HBA_READY;
 
     spin_lock_irq(&phba->hbalock);
     psli->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);
     mempool_free(pmb, phba->mbox_mem_pool);
     return;
 
 out:
     /* Device Discovery completes */
     lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
              "0225 Device Discovery completes\n");
     mempool_free(pmb, phba->mbox_mem_pool);
 
     spin_lock_irq(shost->host_lock);
     vport->fc_flag &= ~FC_ABORT_DISCOVERY;
     spin_unlock_irq(shost->host_lock);
 
     lpfc_can_disctmo(vport);
 
     /* turn on Link Attention interrupts */
 
     spin_lock_irq(&phba->hbalock);
     psli->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);
 
     return;
 }
 
 void
 lpfc_mbx_cmpl_local_config_link(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
 {
     struct lpfc_vport *vport = pmb->vport;
     LPFC_MBOXQ_t *sparam_mb;
     u16 status = pmb->u.mb.mbxStatus;
     int rc;
 
     mempool_free(pmb, phba->mbox_mem_pool);
 
     if (status)
         goto out;
 
     /* don't perform discovery for SLI4 loopback diagnostic test */
     if ((phba->sli_rev == LPFC_SLI_REV4) &&
         !(phba->hba_flag & HBA_FCOE_MODE) &&
         (phba->link_flag & LS_LOOPBACK_MODE))
         return;
 
     if (phba->fc_topology == LPFC_TOPOLOGY_LOOP &&
         vport->fc_flag & FC_PUBLIC_LOOP &&
         !(vport->fc_flag & FC_LBIT)) {
             /* Need to wait for FAN - use discovery timer
              * for timeout.  port_state is identically
              * LPFC_LOCAL_CFG_LINK while waiting for FAN
              */
             lpfc_set_disctmo(vport);
             return;
     }
 
     /* Start discovery by sending a FLOGI. port_state is identically
      * LPFC_FLOGI while waiting for FLOGI cmpl.
      */
     if (vport->port_state != LPFC_FLOGI) {
         /* Issue MBX_READ_SPARAM to update CSPs before FLOGI if
          * bb-credit recovery is in place.
          */
         if (phba->bbcredit_support && phba->cfg_enable_bbcr &&
             !(phba->link_flag & LS_LOOPBACK_MODE)) {
             sparam_mb = mempool_alloc(phba->mbox_mem_pool,
                           GFP_KERNEL);
             if (!sparam_mb)
                 goto sparam_out;
 
             rc = lpfc_read_sparam(phba, sparam_mb, 0);
             if (rc) {
                 mempool_free(sparam_mb, phba->mbox_mem_pool);
                 goto sparam_out;
             }
             sparam_mb->vport = vport;
             sparam_mb->mbox_cmpl = lpfc_mbx_cmpl_read_sparam;
             rc = lpfc_sli_issue_mbox(phba, sparam_mb, MBX_NOWAIT);
             if (rc == MBX_NOT_FINISHED) {
                 lpfc_mbox_rsrc_cleanup(phba, sparam_mb,
                                MBOX_THD_UNLOCKED);
                 goto sparam_out;
             }
 
             phba->hba_flag |= HBA_DEFER_FLOGI;
         }  else {
             lpfc_initial_flogi(vport);
         }
     } else {
         if (vport->fc_flag & FC_PT2PT)
             lpfc_disc_start(vport);
     }
     return;
 
 out:
     lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
              "0306 CONFIG_LINK mbxStatus error x%x HBA state x%x\n",
              status, vport->port_state);
 
 sparam_out:
     lpfc_linkdown(phba);
 
     lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
              "0200 CONFIG_LINK bad hba state x%x\n",
              vport->port_state);
 
     lpfc_issue_clear_la(phba, vport);
     return;
 }
 
 /**
  * lpfc_sli4_clear_fcf_rr_bmask
  * @phba: pointer to the struct lpfc_hba for this port.
  * This fucnction resets the round robin bit mask and clears the
  * fcf priority list. The list deletions are done while holding the
  * hbalock. The ON_LIST flag and the FLOGI_FAILED flags are cleared
  * from the lpfc_fcf_pri record.
  **/
 void
 lpfc_sli4_clear_fcf_rr_bmask(struct lpfc_hba *phba)
 {
     struct lpfc_fcf_pri *fcf_pri;
     struct lpfc_fcf_pri *next_fcf_pri;
     memset(phba->fcf.fcf_rr_bmask, 0, sizeof(*phba->fcf.fcf_rr_bmask));
     spin_lock_irq(&phba->hbalock);
     list_for_each_entry_safe(fcf_pri, next_fcf_pri,
                 &phba->fcf.fcf_pri_list, list) {
         list_del_init(&fcf_pri->list);
         fcf_pri->fcf_rec.flag = 0;
     }
     spin_unlock_irq(&phba->hbalock);
 }
 static void
 lpfc_mbx_cmpl_reg_fcfi(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
 {
     struct lpfc_vport *vport = mboxq->vport;
 
     if (mboxq->u.mb.mbxStatus) {
         lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
                  "2017 REG_FCFI mbxStatus error x%x "
                  "HBA state x%x\n", mboxq->u.mb.mbxStatus,
                  vport->port_state);
         goto fail_out;
     }
 
     /* Start FCoE discovery by sending a FLOGI. */
     phba->fcf.fcfi = bf_get(lpfc_reg_fcfi_fcfi, &mboxq->u.mqe.un.reg_fcfi);
     /* Set the FCFI registered flag */
     spin_lock_irq(&phba->hbalock);
     phba->fcf.fcf_flag |= FCF_REGISTERED;
     spin_unlock_irq(&phba->hbalock);
 
     /* If there is a pending FCoE event, restart FCF table scan. */
     if ((!(phba->hba_flag & FCF_RR_INPROG)) &&
         lpfc_check_pending_fcoe_event(phba, LPFC_UNREG_FCF))
         goto fail_out;
 
     /* Mark successful completion of FCF table scan */
     spin_lock_irq(&phba->hbalock);
     phba->fcf.fcf_flag |= (FCF_SCAN_DONE | FCF_IN_USE);
     phba->hba_flag &= ~FCF_TS_INPROG;
     if (vport->port_state != LPFC_FLOGI) {
         phba->hba_flag |= FCF_RR_INPROG;
         spin_unlock_irq(&phba->hbalock);
         lpfc_issue_init_vfi(vport);
         goto out;
     }
     spin_unlock_irq(&phba->hbalock);
     goto out;
 
 fail_out:
     spin_lock_irq(&phba->hbalock);
     phba->hba_flag &= ~FCF_RR_INPROG;
     spin_unlock_irq(&phba->hbalock);
 out:
     mempool_free(mboxq, phba->mbox_mem_pool);
 }
 
 /**
  * lpfc_fab_name_match - Check if the fcf fabric name match.
  * @fab_name: pointer to fabric name.
  * @new_fcf_record: pointer to fcf record.
  *
  * This routine compare the fcf record's fabric name with provided
  * fabric name. If the fabric name are identical this function
  * returns 1 else return 0.
  **/
 static uint32_t
 lpfc_fab_name_match(uint8_t *fab_name, struct fcf_record *new_fcf_record)
 {
     if (fab_name[0] != bf_get(lpfc_fcf_record_fab_name_0, new_fcf_record))
         return 0;
     if (fab_name[1] != bf_get(lpfc_fcf_record_fab_name_1, new_fcf_record))
         return 0;
     if (fab_name[2] != bf_get(lpfc_fcf_record_fab_name_2, new_fcf_record))
         return 0;
     if (fab_name[3] != bf_get(lpfc_fcf_record_fab_name_3, new_fcf_record))
         return 0;
     if (fab_name[4] != bf_get(lpfc_fcf_record_fab_name_4, new_fcf_record))
         return 0;
     if (fab_name[5] != bf_get(lpfc_fcf_record_fab_name_5, new_fcf_record))
         return 0;
     if (fab_name[6] != bf_get(lpfc_fcf_record_fab_name_6, new_fcf_record))
         return 0;
     if (fab_name[7] != bf_get(lpfc_fcf_record_fab_name_7, new_fcf_record))
         return 0;
     return 1;
 }
 
 /**
  * lpfc_sw_name_match - Check if the fcf switch name match.
  * @sw_name: pointer to switch name.
  * @new_fcf_record: pointer to fcf record.
  *
  * This routine compare the fcf record's switch name with provided
  * switch name. If the switch name are identical this function
  * returns 1 else return 0.
  **/
 static uint32_t
 lpfc_sw_name_match(uint8_t *sw_name, struct fcf_record *new_fcf_record)
 {
     if (sw_name[0] != bf_get(lpfc_fcf_record_switch_name_0, new_fcf_record))
         return 0;
     if (sw_name[1] != bf_get(lpfc_fcf_record_switch_name_1, new_fcf_record))
         return 0;
     if (sw_name[2] != bf_get(lpfc_fcf_record_switch_name_2, new_fcf_record))
         return 0;
     if (sw_name[3] != bf_get(lpfc_fcf_record_switch_name_3, new_fcf_record))
         return 0;
     if (sw_name[4] != bf_get(lpfc_fcf_record_switch_name_4, new_fcf_record))
         return 0;
     if (sw_name[5] != bf_get(lpfc_fcf_record_switch_name_5, new_fcf_record))
         return 0;
     if (sw_name[6] != bf_get(lpfc_fcf_record_switch_name_6, new_fcf_record))
         return 0;
     if (sw_name[7] != bf_get(lpfc_fcf_record_switch_name_7, new_fcf_record))
         return 0;
     return 1;
 }
 
 /**
  * lpfc_mac_addr_match - Check if the fcf mac address match.
  * @mac_addr: pointer to mac address.
  * @new_fcf_record: pointer to fcf record.
  *
  * This routine compare the fcf record's mac address with HBA's
  * FCF mac address. If the mac addresses are identical this function
  * returns 1 else return 0.
  **/
 static uint32_t
 lpfc_mac_addr_match(uint8_t *mac_addr, struct fcf_record *new_fcf_record)
 {
     if (mac_addr[0] != bf_get(lpfc_fcf_record_mac_0, new_fcf_record))
         return 0;
     if (mac_addr[1] != bf_get(lpfc_fcf_record_mac_1, new_fcf_record))
         return 0;
     if (mac_addr[2] != bf_get(lpfc_fcf_record_mac_2, new_fcf_record))
         return 0;
     if (mac_addr[3] != bf_get(lpfc_fcf_record_mac_3, new_fcf_record))
         return 0;
     if (mac_addr[4] != bf_get(lpfc_fcf_record_mac_4, new_fcf_record))
         return 0;
     if (mac_addr[5] != bf_get(lpfc_fcf_record_mac_5, new_fcf_record))
         return 0;
     return 1;
 }
 
 static bool
 lpfc_vlan_id_match(uint16_t curr_vlan_id, uint16_t new_vlan_id)
 {
     return (curr_vlan_id == new_vlan_id);
 }
 
 /**
  * __lpfc_update_fcf_record_pri - update the lpfc_fcf_pri record.
  * @phba: pointer to lpfc hba data structure.
  * @fcf_index: Index for the lpfc_fcf_record.
  * @new_fcf_record: pointer to hba fcf record.
  *
  * This routine updates the driver FCF priority record from the new HBA FCF
  * record. The hbalock is asserted held in the code path calling this
  * routine.
  **/
 static void
 __lpfc_update_fcf_record_pri(struct lpfc_hba *phba, uint16_t fcf_index,
                  struct fcf_record *new_fcf_record
                  )
 {
     struct lpfc_fcf_pri *fcf_pri;
 
     fcf_pri = &phba->fcf.fcf_pri[fcf_index];
     fcf_pri->fcf_rec.fcf_index = fcf_index;
     /* FCF record priority */
     fcf_pri->fcf_rec.priority = new_fcf_record->fip_priority;
 
 }
 
 /**
  * lpfc_copy_fcf_record - Copy fcf information to lpfc_hba.
  * @fcf_rec: pointer to driver fcf record.
  * @new_fcf_record: pointer to fcf record.
  *
  * This routine copies the FCF information from the FCF
  * record to lpfc_hba data structure.
  **/
 static void
 lpfc_copy_fcf_record(struct lpfc_fcf_rec *fcf_rec,
              struct fcf_record *new_fcf_record)
 {
     /* Fabric name */
     fcf_rec->fabric_name[0] =
         bf_get(lpfc_fcf_record_fab_name_0, new_fcf_record);
     fcf_rec->fabric_name[1] =
         bf_get(lpfc_fcf_record_fab_name_1, new_fcf_record);
     fcf_rec->fabric_name[2] =
         bf_get(lpfc_fcf_record_fab_name_2, new_fcf_record);
     fcf_rec->fabric_name[3] =
         bf_get(lpfc_fcf_record_fab_name_3, new_fcf_record);
     fcf_rec->fabric_name[4] =
         bf_get(lpfc_fcf_record_fab_name_4, new_fcf_record);
     fcf_rec->fabric_name[5] =
         bf_get(lpfc_fcf_record_fab_name_5, new_fcf_record);
     fcf_rec->fabric_name[6] =
         bf_get(lpfc_fcf_record_fab_name_6, new_fcf_record);
     fcf_rec->fabric_name[7] =
         bf_get(lpfc_fcf_record_fab_name_7, new_fcf_record);
     /* Mac address */
     fcf_rec->mac_addr[0] = bf_get(lpfc_fcf_record_mac_0, new_fcf_record);
     fcf_rec->mac_addr[1] = bf_get(lpfc_fcf_record_mac_1, new_fcf_record);
     fcf_rec->mac_addr[2] = bf_get(lpfc_fcf_record_mac_2, new_fcf_record);
     fcf_rec->mac_addr[3] = bf_get(lpfc_fcf_record_mac_3, new_fcf_record);
     fcf_rec->mac_addr[4] = bf_get(lpfc_fcf_record_mac_4, new_fcf_record);
     fcf_rec->mac_addr[5] = bf_get(lpfc_fcf_record_mac_5, new_fcf_record);
     /* FCF record index */
     fcf_rec->fcf_indx = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record);
     /* FCF record priority */
     fcf_rec->priority = new_fcf_record->fip_priority;
     /* Switch name */
     fcf_rec->switch_name[0] =
         bf_get(lpfc_fcf_record_switch_name_0, new_fcf_record);
     fcf_rec->switch_name[1] =
         bf_get(lpfc_fcf_record_switch_name_1, new_fcf_record);
     fcf_rec->switch_name[2] =
         bf_get(lpfc_fcf_record_switch_name_2, new_fcf_record);
     fcf_rec->switch_name[3] =
         bf_get(lpfc_fcf_record_switch_name_3, new_fcf_record);
     fcf_rec->switch_name[4] =
         bf_get(lpfc_fcf_record_switch_name_4, new_fcf_record);
     fcf_rec->switch_name[5] =
         bf_get(lpfc_fcf_record_switch_name_5, new_fcf_record);
     fcf_rec->switch_name[6] =
         bf_get(lpfc_fcf_record_switch_name_6, new_fcf_record);
     fcf_rec->switch_name[7] =
         bf_get(lpfc_fcf_record_switch_name_7, new_fcf_record);
 }
 
 /**
  * __lpfc_update_fcf_record - Update driver fcf record
  * @phba: pointer to lpfc hba data structure.
  * @fcf_rec: pointer to driver fcf record.
  * @new_fcf_record: pointer to hba fcf record.
  * @addr_mode: address mode to be set to the driver fcf record.
  * @vlan_id: vlan tag to be set to the driver fcf record.
  * @flag: flag bits to be set to the driver fcf record.
  *
  * This routine updates the driver FCF record from the new HBA FCF record
  * together with the address mode, vlan_id, and other informations. This
  * routine is called with the hbalock held.
  **/
 static void
 __lpfc_update_fcf_record(struct lpfc_hba *phba, struct lpfc_fcf_rec *fcf_rec,
                struct fcf_record *new_fcf_record, uint32_t addr_mode,
                uint16_t vlan_id, uint32_t flag)
 {
     lockdep_assert_held(&phba->hbalock);
 
     /* Copy the fields from the HBA's FCF record */
     lpfc_copy_fcf_record(fcf_rec, new_fcf_record);
     /* Update other fields of driver FCF record */
     fcf_rec->addr_mode = addr_mode;
     fcf_rec->vlan_id = vlan_id;
     fcf_rec->flag |= (flag | RECORD_VALID);
     __lpfc_update_fcf_record_pri(phba,
         bf_get(lpfc_fcf_record_fcf_index, new_fcf_record),
                  new_fcf_record);
 }
 
 /**
  * lpfc_register_fcf - Register the FCF with hba.
  * @phba: pointer to lpfc hba data structure.
  *
  * This routine issues a register fcfi mailbox command to register
  * the fcf with HBA.
  **/
 static void
 lpfc_register_fcf(struct lpfc_hba *phba)
 {
     LPFC_MBOXQ_t *fcf_mbxq;
     int rc;
 
     spin_lock_irq(&phba->hbalock);
     /* If the FCF is not available do nothing. */
     if (!(phba->fcf.fcf_flag & FCF_AVAILABLE)) {
         phba->hba_flag &= ~(FCF_TS_INPROG | FCF_RR_INPROG);
         spin_unlock_irq(&phba->hbalock);
         return;
     }
 
     /* The FCF is already registered, start discovery */
     if (phba->fcf.fcf_flag & FCF_REGISTERED) {
         phba->fcf.fcf_flag |= (FCF_SCAN_DONE | FCF_IN_USE);
         phba->hba_flag &= ~FCF_TS_INPROG;
         if (phba->pport->port_state != LPFC_FLOGI &&
             phba->pport->fc_flag & FC_FABRIC) {
             phba->hba_flag |= FCF_RR_INPROG;
             spin_unlock_irq(&phba->hbalock);
             lpfc_initial_flogi(phba->pport);
             return;
         }
         spin_unlock_irq(&phba->hbalock);
         return;
     }
     spin_unlock_irq(&phba->hbalock);
 
     fcf_mbxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
     if (!fcf_mbxq) {
         spin_lock_irq(&phba->hbalock);
         phba->hba_flag &= ~(FCF_TS_INPROG | FCF_RR_INPROG);
         spin_unlock_irq(&phba->hbalock);
         return;
     }
 
     lpfc_reg_fcfi(phba, fcf_mbxq);
     fcf_mbxq->vport = phba->pport;
     fcf_mbxq->mbox_cmpl = lpfc_mbx_cmpl_reg_fcfi;
     rc = lpfc_sli_issue_mbox(phba, fcf_mbxq, MBX_NOWAIT);
     if (rc == MBX_NOT_FINISHED) {
         spin_lock_irq(&phba->hbalock);
         phba->hba_flag &= ~(FCF_TS_INPROG | FCF_RR_INPROG);
         spin_unlock_irq(&phba->hbalock);
         mempool_free(fcf_mbxq, phba->mbox_mem_pool);
     }
 
     return;
 }
 
 /**
  * lpfc_match_fcf_conn_list - Check if the FCF record can be used for discovery.
  * @phba: pointer to lpfc hba data structure.
  * @new_fcf_record: pointer to fcf record.
  * @boot_flag: Indicates if this record used by boot bios.
  * @addr_mode: The address mode to be used by this FCF
  * @vlan_id: The vlan id to be used as vlan tagging by this FCF.
  *
  * This routine compare the fcf record with connect list obtained from the
  * config region to decide if this FCF can be used for SAN discovery. It returns
  * 1 if this record can be used for SAN discovery else return zero. If this FCF
  * record can be used for SAN discovery, the boot_flag will indicate if this FCF
  * is used by boot bios and addr_mode will indicate the addressing mode to be
  * used for this FCF when the function returns.
  * If the FCF record need to be used with a particular vlan id, the vlan is
  * set in the vlan_id on return of the function. If not VLAN tagging need to
  * be used with the FCF vlan_id will be set to LPFC_FCOE_NULL_VID;
  **/
 static int
 lpfc_match_fcf_conn_list(struct lpfc_hba *phba,
             struct fcf_record *new_fcf_record,
             uint32_t *boot_flag, uint32_t *addr_mode,
             uint16_t *vlan_id)
 {
     struct lpfc_fcf_conn_entry *conn_entry;
     int i, j, fcf_vlan_id = 0;
 
     /* Find the lowest VLAN id in the FCF record */
     for (i = 0; i < 512; i++) {
         if (new_fcf_record->vlan_bitmap[i]) {
             fcf_vlan_id = i * 8;
             j = 0;
             while (!((new_fcf_record->vlan_bitmap[i] >> j) & 1)) {
                 j++;
                 fcf_vlan_id++;
             }
             break;
         }
     }
 
     /* FCF not valid/available or solicitation in progress */
     if (!bf_get(lpfc_fcf_record_fcf_avail, new_fcf_record) ||
         !bf_get(lpfc_fcf_record_fcf_valid, new_fcf_record) ||
         bf_get(lpfc_fcf_record_fcf_sol, new_fcf_record))
         return 0;
 
     if (!(phba->hba_flag & HBA_FIP_SUPPORT)) {
         *boot_flag = 0;
         *addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov,
                 new_fcf_record);
         if (phba->valid_vlan)
             *vlan_id = phba->vlan_id;
         else
             *vlan_id = LPFC_FCOE_NULL_VID;
         return 1;
     }
 
     /*
      * If there are no FCF connection table entry, driver connect to all
      * FCFs.
      */
     if (list_empty(&phba->fcf_conn_rec_list)) {
         *boot_flag = 0;
         *addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov,
             new_fcf_record);
 
         /*
          * When there are no FCF connect entries, use driver's default
          * addressing mode - FPMA.
          */
         if (*addr_mode & LPFC_FCF_FPMA)
             *addr_mode = LPFC_FCF_FPMA;
 
         /* If FCF record report a vlan id use that vlan id */
         if (fcf_vlan_id)
             *vlan_id = fcf_vlan_id;
         else
             *vlan_id = LPFC_FCOE_NULL_VID;
         return 1;
     }
 
     list_for_each_entry(conn_entry,
                 &phba->fcf_conn_rec_list, list) {
         if (!(conn_entry->conn_rec.flags & FCFCNCT_VALID))
             continue;
 
         if ((conn_entry->conn_rec.flags & FCFCNCT_FBNM_VALID) &&
             !lpfc_fab_name_match(conn_entry->conn_rec.fabric_name,
                          new_fcf_record))
             continue;
         if ((conn_entry->conn_rec.flags & FCFCNCT_SWNM_VALID) &&
             !lpfc_sw_name_match(conn_entry->conn_rec.switch_name,
                         new_fcf_record))
             continue;
         if (conn_entry->conn_rec.flags & FCFCNCT_VLAN_VALID) {
             /*
              * If the vlan bit map does not have the bit set for the
              * vlan id to be used, then it is not a match.
              */
             if (!(new_fcf_record->vlan_bitmap
                 [conn_entry->conn_rec.vlan_tag / 8] &
                 (1 << (conn_entry->conn_rec.vlan_tag % 8))))
                 continue;
         }
 
         /*
          * If connection record does not support any addressing mode,
          * skip the FCF record.
          */
         if (!(bf_get(lpfc_fcf_record_mac_addr_prov, new_fcf_record)
             & (LPFC_FCF_FPMA | LPFC_FCF_SPMA)))
             continue;
 
         /*
          * Check if the connection record specifies a required
          * addressing mode.
          */
         if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) &&
             !(conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED)) {
 
             /*
              * If SPMA required but FCF not support this continue.
              */
             if ((conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) &&
                 !(bf_get(lpfc_fcf_record_mac_addr_prov,
                     new_fcf_record) & LPFC_FCF_SPMA))
                 continue;
 
             /*
              * If FPMA required but FCF not support this continue.
              */
             if (!(conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) &&
                 !(bf_get(lpfc_fcf_record_mac_addr_prov,
                 new_fcf_record) & LPFC_FCF_FPMA))
                 continue;
         }
 
         /*
          * This fcf record matches filtering criteria.
          */
         if (conn_entry->conn_rec.flags & FCFCNCT_BOOT)
             *boot_flag = 1;
         else
             *boot_flag = 0;
 
         /*
          * If user did not specify any addressing mode, or if the
          * preferred addressing mode specified by user is not supported
          * by FCF, allow fabric to pick the addressing mode.
          */
         *addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov,
                 new_fcf_record);
         /*
          * If the user specified a required address mode, assign that
          * address mode
          */
         if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) &&
             (!(conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED)))
             *addr_mode = (conn_entry->conn_rec.flags &
                 FCFCNCT_AM_SPMA) ?
                 LPFC_FCF_SPMA : LPFC_FCF_FPMA;
         /*
          * If the user specified a preferred address mode, use the
          * addr mode only if FCF support the addr_mode.
          */
         else if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) &&
             (conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED) &&
             (conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) &&
             (*addr_mode & LPFC_FCF_SPMA))
                 *addr_mode = LPFC_FCF_SPMA;
         else if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) &&
             (conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED) &&
             !(conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) &&
             (*addr_mode & LPFC_FCF_FPMA))
                 *addr_mode = LPFC_FCF_FPMA;
 
         /* If matching connect list has a vlan id, use it */
         if (conn_entry->conn_rec.flags & FCFCNCT_VLAN_VALID)
             *vlan_id = conn_entry->conn_rec.vlan_tag;
         /*
          * If no vlan id is specified in connect list, use the vlan id
          * in the FCF record
          */
         else if (fcf_vlan_id)
             *vlan_id = fcf_vlan_id;
         else
             *vlan_id = LPFC_FCOE_NULL_VID;
 
         return 1;
     }
 
     return 0;
 }
 
 /**
  * lpfc_check_pending_fcoe_event - Check if there is pending fcoe event.
  * @phba: pointer to lpfc hba data structure.
  * @unreg_fcf: Unregister FCF if FCF table need to be re-scaned.
  *
  * This function check if there is any fcoe event pending while driver
  * scan FCF entries. If there is any pending event, it will restart the
  * FCF saning and return 1 else return 0.
  */
 int
 lpfc_check_pending_fcoe_event(struct lpfc_hba *phba, uint8_t unreg_fcf)
 {
     /*
      * If the Link is up and no FCoE events while in the
      * FCF discovery, no need to restart FCF discovery.
      */
     if ((phba->link_state  >= LPFC_LINK_UP) &&
         (phba->fcoe_eventtag == phba->fcoe_eventtag_at_fcf_scan))
         return 0;
 
     lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
             "2768 Pending link or FCF event during current "
             "handling of the previous event: link_state:x%x, "
             "evt_tag_at_scan:x%x, evt_tag_current:x%x\n",
             phba->link_state, phba->fcoe_eventtag_at_fcf_scan,
             phba->fcoe_eventtag);
 
     spin_lock_irq(&phba->hbalock);
     phba->fcf.fcf_flag &= ~FCF_AVAILABLE;
     spin_unlock_irq(&phba->hbalock);
 
     if (phba->link_state >= LPFC_LINK_UP) {
         lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY,
                 "2780 Restart FCF table scan due to "
                 "pending FCF event:evt_tag_at_scan:x%x, "
                 "evt_tag_current:x%x\n",
                 phba->fcoe_eventtag_at_fcf_scan,
                 phba->fcoe_eventtag);
         lpfc_sli4_fcf_scan_read_fcf_rec(phba, LPFC_FCOE_FCF_GET_FIRST);
     } else {
         /*
          * Do not continue FCF discovery and clear FCF_TS_INPROG
          * flag
          */
         lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY,
                 "2833 Stop FCF discovery process due to link "
                 "state change (x%x)\n", phba->link_state);
         spin_lock_irq(&phba->hbalock);
         phba->hba_flag &= ~(FCF_TS_INPROG | FCF_RR_INPROG);
         phba->fcf.fcf_flag &= ~(FCF_REDISC_FOV | FCF_DISCOVERY);
         spin_unlock_irq(&phba->hbalock);
     }
 
     /* Unregister the currently registered FCF if required */
     if (unreg_fcf) {
         spin_lock_irq(&phba->hbalock);
         phba->fcf.fcf_flag &= ~FCF_REGISTERED;
         spin_unlock_irq(&phba->hbalock);
         lpfc_sli4_unregister_fcf(phba);
     }
     return 1;
 }
 
 /**
  * lpfc_sli4_new_fcf_random_select - Randomly select an eligible new fcf record
  * @phba: pointer to lpfc hba data structure.
  * @fcf_cnt: number of eligible fcf record seen so far.
  *
  * This function makes an running random selection decision on FCF record to
  * use through a sequence of @fcf_cnt eligible FCF records with equal
  * probability. To perform integer manunipulation of random numbers with
  * size unit32_t, the lower 16 bits of the 32-bit random number returned
  * from prandom_u32() are taken as the random random number generated.
  *
  * Returns true when outcome is for the newly read FCF record should be
  * chosen; otherwise, return false when outcome is for keeping the previously
  * chosen FCF record.
  **/
 static bool
 lpfc_sli4_new_fcf_random_select(struct lpfc_hba *phba, uint32_t fcf_cnt)
 {
     uint32_t rand_num;
 
     /* Get 16-bit uniform random number */
     rand_num = 0xFFFF & prandom_u32();
 
     /* Decision with probability 1/fcf_cnt */
     if ((fcf_cnt * rand_num) < 0xFFFF)
         return true;
     else
         return false;
 }
 
 /**
  * lpfc_sli4_fcf_rec_mbox_parse - Parse read_fcf mbox command.
  * @phba: pointer to lpfc hba data structure.
  * @mboxq: pointer to mailbox object.
  * @next_fcf_index: pointer to holder of next fcf index.
  *
  * This routine parses the non-embedded fcf mailbox command by performing the
  * necessarily error checking, non-embedded read FCF record mailbox command
  * SGE parsing, and endianness swapping.
  *
  * Returns the pointer to the new FCF record in the non-embedded mailbox
  * command DMA memory if successfully, other NULL.
  */
 static struct fcf_record *
 lpfc_sli4_fcf_rec_mbox_parse(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq,
                  uint16_t *next_fcf_index)
 {
     void *virt_addr;
     struct lpfc_mbx_sge sge;
     struct lpfc_mbx_read_fcf_tbl *read_fcf;
     uint32_t shdr_status, shdr_add_status, if_type;
     union lpfc_sli4_cfg_shdr *shdr;
     struct fcf_record *new_fcf_record;
 
     /* Get the first SGE entry from the non-embedded DMA memory. This
      * routine only uses a single SGE.
      */
     lpfc_sli4_mbx_sge_get(mboxq, 0, &sge);
     if (unlikely(!mboxq->sge_array)) {
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "2524 Failed to get the non-embedded SGE "
                 "virtual address\n");
         return NULL;
     }
     virt_addr = mboxq->sge_array->addr[0];
 
     shdr = (union lpfc_sli4_cfg_shdr *)virt_addr;
     lpfc_sli_pcimem_bcopy(shdr, shdr,
                   sizeof(union lpfc_sli4_cfg_shdr));
     shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
     if_type = bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf);
     shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
     if (shdr_status || shdr_add_status) {
         if (shdr_status == STATUS_FCF_TABLE_EMPTY ||
                     if_type == LPFC_SLI_INTF_IF_TYPE_2)
             lpfc_printf_log(phba, KERN_ERR,
                     LOG_TRACE_EVENT,
                     "2726 READ_FCF_RECORD Indicates empty "
                     "FCF table.\n");
         else
             lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                     "2521 READ_FCF_RECORD mailbox failed "
                     "with status x%x add_status x%x, "
                     "mbx\n", shdr_status, shdr_add_status);
         return NULL;
     }
 
     /* Interpreting the returned information of the FCF record */
     read_fcf = (struct lpfc_mbx_read_fcf_tbl *)virt_addr;
     lpfc_sli_pcimem_bcopy(read_fcf, read_fcf,
                   sizeof(struct lpfc_mbx_read_fcf_tbl));
     *next_fcf_index = bf_get(lpfc_mbx_read_fcf_tbl_nxt_vindx, read_fcf);
     new_fcf_record = (struct fcf_record *)(virt_addr +
               sizeof(struct lpfc_mbx_read_fcf_tbl));
     lpfc_sli_pcimem_bcopy(new_fcf_record, new_fcf_record,
                 offsetof(struct fcf_record, vlan_bitmap));
     new_fcf_record->word137 = le32_to_cpu(new_fcf_record->word137);
     new_fcf_record->word138 = le32_to_cpu(new_fcf_record->word138);
 
     return new_fcf_record;
 }
 
 /**
  * lpfc_sli4_log_fcf_record_info - Log the information of a fcf record
  * @phba: pointer to lpfc hba data structure.
  * @fcf_record: pointer to the fcf record.
  * @vlan_id: the lowest vlan identifier associated to this fcf record.
  * @next_fcf_index: the index to the next fcf record in hba's fcf table.
  *
  * This routine logs the detailed FCF record if the LOG_FIP loggin is
  * enabled.
  **/
 static void
 lpfc_sli4_log_fcf_record_info(struct lpfc_hba *phba,
                   struct fcf_record *fcf_record,
                   uint16_t vlan_id,
                   uint16_t next_fcf_index)
 {
     lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
             "2764 READ_FCF_RECORD:\n"
             "\tFCF_Index     : x%x\n"
             "\tFCF_Avail     : x%x\n"
             "\tFCF_Valid     : x%x\n"
             "\tFCF_SOL       : x%x\n"
             "\tFIP_Priority  : x%x\n"
             "\tMAC_Provider  : x%x\n"
             "\tLowest VLANID : x%x\n"
             "\tFCF_MAC Addr  : x%x:%x:%x:%x:%x:%x\n"
             "\tFabric_Name   : x%x:%x:%x:%x:%x:%x:%x:%x\n"
             "\tSwitch_Name   : x%x:%x:%x:%x:%x:%x:%x:%x\n"
             "\tNext_FCF_Index: x%x\n",
             bf_get(lpfc_fcf_record_fcf_index, fcf_record),
             bf_get(lpfc_fcf_record_fcf_avail, fcf_record),
             bf_get(lpfc_fcf_record_fcf_valid, fcf_record),
             bf_get(lpfc_fcf_record_fcf_sol, fcf_record),
             fcf_record->fip_priority,
             bf_get(lpfc_fcf_record_mac_addr_prov, fcf_record),
             vlan_id,
             bf_get(lpfc_fcf_record_mac_0, fcf_record),
             bf_get(lpfc_fcf_record_mac_1, fcf_record),
             bf_get(lpfc_fcf_record_mac_2, fcf_record),
             bf_get(lpfc_fcf_record_mac_3, fcf_record),
             bf_get(lpfc_fcf_record_mac_4, fcf_record),
             bf_get(lpfc_fcf_record_mac_5, fcf_record),
             bf_get(lpfc_fcf_record_fab_name_0, fcf_record),
             bf_get(lpfc_fcf_record_fab_name_1, fcf_record),
             bf_get(lpfc_fcf_record_fab_name_2, fcf_record),
             bf_get(lpfc_fcf_record_fab_name_3, fcf_record),
             bf_get(lpfc_fcf_record_fab_name_4, fcf_record),
             bf_get(lpfc_fcf_record_fab_name_5, fcf_record),
             bf_get(lpfc_fcf_record_fab_name_6, fcf_record),
             bf_get(lpfc_fcf_record_fab_name_7, fcf_record),
             bf_get(lpfc_fcf_record_switch_name_0, fcf_record),
             bf_get(lpfc_fcf_record_switch_name_1, fcf_record),
             bf_get(lpfc_fcf_record_switch_name_2, fcf_record),
             bf_get(lpfc_fcf_record_switch_name_3, fcf_record),
             bf_get(lpfc_fcf_record_switch_name_4, fcf_record),
             bf_get(lpfc_fcf_record_switch_name_5, fcf_record),
             bf_get(lpfc_fcf_record_switch_name_6, fcf_record),
             bf_get(lpfc_fcf_record_switch_name_7, fcf_record),
             next_fcf_index);
 }
 
 /**
  * lpfc_sli4_fcf_record_match - testing new FCF record for matching existing FCF
  * @phba: pointer to lpfc hba data structure.
  * @fcf_rec: pointer to an existing FCF record.
  * @new_fcf_record: pointer to a new FCF record.
  * @new_vlan_id: vlan id from the new FCF record.
  *
  * This function performs matching test of a new FCF record against an existing
  * FCF record. If the new_vlan_id passed in is LPFC_FCOE_IGNORE_VID, vlan id
  * will not be used as part of the FCF record matching criteria.
  *
  * Returns true if all the fields matching, otherwise returns false.
  */
 static bool
 lpfc_sli4_fcf_record_match(struct lpfc_hba *phba,
                struct lpfc_fcf_rec *fcf_rec,
                struct fcf_record *new_fcf_record,
                uint16_t new_vlan_id)
 {
     if (new_vlan_id != LPFC_FCOE_IGNORE_VID)
         if (!lpfc_vlan_id_match(fcf_rec->vlan_id, new_vlan_id))
             return false;
     if (!lpfc_mac_addr_match(fcf_rec->mac_addr, new_fcf_record))
         return false;
     if (!lpfc_sw_name_match(fcf_rec->switch_name, new_fcf_record))
         return false;
     if (!lpfc_fab_name_match(fcf_rec->fabric_name, new_fcf_record))
         return false;
     if (fcf_rec->priority != new_fcf_record->fip_priority)
         return false;
     return true;
 }
 
 /**
  * lpfc_sli4_fcf_rr_next_proc - processing next roundrobin fcf
  * @vport: Pointer to vport object.
  * @fcf_index: index to next fcf.
  *
  * This function processing the roundrobin fcf failover to next fcf index.
  * When this function is invoked, there will be a current fcf registered
  * for flogi.
  * Return: 0 for continue retrying flogi on currently registered fcf;
  *         1 for stop flogi on currently registered fcf;
  */
 int lpfc_sli4_fcf_rr_next_proc(struct lpfc_vport *vport, uint16_t fcf_index)
 {
     struct lpfc_hba *phba = vport->phba;
     int rc;
 
     if (fcf_index == LPFC_FCOE_FCF_NEXT_NONE) {
         spin_lock_irq(&phba->hbalock);
         if (phba->hba_flag & HBA_DEVLOSS_TMO) {
             spin_unlock_irq(&phba->hbalock);
             lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
                     "2872 Devloss tmo with no eligible "
                     "FCF, unregister in-use FCF (x%x) "
                     "and rescan FCF table\n",
                     phba->fcf.current_rec.fcf_indx);
             lpfc_unregister_fcf_rescan(phba);
             goto stop_flogi_current_fcf;
         }
         /* Mark the end to FLOGI roundrobin failover */
         phba->hba_flag &= ~FCF_RR_INPROG;
         /* Allow action to new fcf asynchronous event */
         phba->fcf.fcf_flag &= ~(FCF_AVAILABLE | FCF_SCAN_DONE);
         spin_unlock_irq(&phba->hbalock);
         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
                 "2865 No FCF available, stop roundrobin FCF "
                 "failover and change port state:x%x/x%x\n",
                 phba->pport->port_state, LPFC_VPORT_UNKNOWN);
         phba->pport->port_state = LPFC_VPORT_UNKNOWN;
 
         if (!phba->fcf.fcf_redisc_attempted) {
             lpfc_unregister_fcf(phba);
 
             rc = lpfc_sli4_redisc_fcf_table(phba);
             if (!rc) {
                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
                         "3195 Rediscover FCF table\n");
                 phba->fcf.fcf_redisc_attempted = 1;
                 lpfc_sli4_clear_fcf_rr_bmask(phba);
             } else {
                 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
                         "3196 Rediscover FCF table "
                         "failed. Status:x%x\n", rc);
             }
         } else {
             lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
                     "3197 Already rediscover FCF table "
                     "attempted. No more retry\n");
         }
         goto stop_flogi_current_fcf;
     } else {
         lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_ELS,
                 "2794 Try FLOGI roundrobin FCF failover to "
                 "(x%x)\n", fcf_index);
         rc = lpfc_sli4_fcf_rr_read_fcf_rec(phba, fcf_index);
         if (rc)
             lpfc_printf_log(phba, KERN_WARNING, LOG_FIP | LOG_ELS,
                     "2761 FLOGI roundrobin FCF failover "
                     "failed (rc:x%x) to read FCF (x%x)\n",
                     rc, phba->fcf.current_rec.fcf_indx);
         else
             goto stop_flogi_current_fcf;
     }
     return 0;
 
 stop_flogi_current_fcf:
     lpfc_can_disctmo(vport);
     return 1;
 }
 
 /**
  * lpfc_sli4_fcf_pri_list_del
  * @phba: pointer to lpfc hba data structure.
  * @fcf_index: the index of the fcf record to delete
  * This routine checks the on list flag of the fcf_index to be deleted.
  * If it is one the list then it is removed from the list, and the flag
  * is cleared. This routine grab the hbalock before removing the fcf
  * record from the list.
  **/
 static void lpfc_sli4_fcf_pri_list_del(struct lpfc_hba *phba,
             uint16_t fcf_index)
 {
     struct lpfc_fcf_pri *new_fcf_pri;
 
     new_fcf_pri = &phba->fcf.fcf_pri[fcf_index];
     lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
         "3058 deleting idx x%x pri x%x flg x%x\n",
         fcf_index, new_fcf_pri->fcf_rec.priority,
          new_fcf_pri->fcf_rec.flag);
     spin_lock_irq(&phba->hbalock);
     if (new_fcf_pri->fcf_rec.flag & LPFC_FCF_ON_PRI_LIST) {
         if (phba->fcf.current_rec.priority ==
                 new_fcf_pri->fcf_rec.priority)
             phba->fcf.eligible_fcf_cnt--;
         list_del_init(&new_fcf_pri->list);
         new_fcf_pri->fcf_rec.flag &= ~LPFC_FCF_ON_PRI_LIST;
     }
     spin_unlock_irq(&phba->hbalock);
 }
 
 /**
  * lpfc_sli4_set_fcf_flogi_fail
  * @phba: pointer to lpfc hba data structure.
  * @fcf_index: the index of the fcf record to update
  * This routine acquires the hbalock and then set the LPFC_FCF_FLOGI_FAILED
  * flag so the the round robin slection for the particular priority level
  * will try a different fcf record that does not have this bit set.
  * If the fcf record is re-read for any reason this flag is cleared brfore
  * adding it to the priority list.
  **/
 void
 lpfc_sli4_set_fcf_flogi_fail(struct lpfc_hba *phba, uint16_t fcf_index)
 {
     struct lpfc_fcf_pri *new_fcf_pri;
     new_fcf_pri = &phba->fcf.fcf_pri[fcf_index];
     spin_lock_irq(&phba->hbalock);
     new_fcf_pri->fcf_rec.flag |= LPFC_FCF_FLOGI_FAILED;
     spin_unlock_irq(&phba->hbalock);
 }
 
 /**
  * lpfc_sli4_fcf_pri_list_add
  * @phba: pointer to lpfc hba data structure.
  * @fcf_index: the index of the fcf record to add
  * @new_fcf_record: pointer to a new FCF record.
  * This routine checks the priority of the fcf_index to be added.
  * If it is a lower priority than the current head of the fcf_pri list
  * then it is added to the list in the right order.
  * If it is the same priority as the current head of the list then it
  * is added to the head of the list and its bit in the rr_bmask is set.
  * If the fcf_index to be added is of a higher priority than the current
  * head of the list then the rr_bmask is cleared, its bit is set in the
  * rr_bmask and it is added to the head of the list.
  * returns:
  * 0=success 1=failure
  **/
 static int lpfc_sli4_fcf_pri_list_add(struct lpfc_hba *phba,
     uint16_t fcf_index,
     struct fcf_record *new_fcf_record)
 {
     uint16_t current_fcf_pri;
     uint16_t last_index;
     struct lpfc_fcf_pri *fcf_pri;
     struct lpfc_fcf_pri *next_fcf_pri;
     struct lpfc_fcf_pri *new_fcf_pri;
     int ret;
 
     new_fcf_pri = &phba->fcf.fcf_pri[fcf_index];
     lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
         "3059 adding idx x%x pri x%x flg x%x\n",
         fcf_index, new_fcf_record->fip_priority,
          new_fcf_pri->fcf_rec.flag);
     spin_lock_irq(&phba->hbalock);
     if (new_fcf_pri->fcf_rec.flag & LPFC_FCF_ON_PRI_LIST)
         list_del_init(&new_fcf_pri->list);
     new_fcf_pri->fcf_rec.fcf_index = fcf_index;
     new_fcf_pri->fcf_rec.priority = new_fcf_record->fip_priority;
     if (list_empty(&phba->fcf.fcf_pri_list)) {
         list_add(&new_fcf_pri->list, &phba->fcf.fcf_pri_list);
         ret = lpfc_sli4_fcf_rr_index_set(phba,
                 new_fcf_pri->fcf_rec.fcf_index);
         goto out;
     }
 
     last_index = find_first_bit(phba->fcf.fcf_rr_bmask,
                 LPFC_SLI4_FCF_TBL_INDX_MAX);
     if (last_index >= LPFC_SLI4_FCF_TBL_INDX_MAX) {
         ret = 0; /* Empty rr list */
         goto out;
     }
     current_fcf_pri = phba->fcf.fcf_pri[last_index].fcf_rec.priority;
     if (new_fcf_pri->fcf_rec.priority <=  current_fcf_pri) {
         list_add(&new_fcf_pri->list, &phba->fcf.fcf_pri_list);
         if (new_fcf_pri->fcf_rec.priority <  current_fcf_pri) {
             memset(phba->fcf.fcf_rr_bmask, 0,
                 sizeof(*phba->fcf.fcf_rr_bmask));
             /* fcfs_at_this_priority_level = 1; */
             phba->fcf.eligible_fcf_cnt = 1;
         } else
             /* fcfs_at_this_priority_level++; */
             phba->fcf.eligible_fcf_cnt++;
         ret = lpfc_sli4_fcf_rr_index_set(phba,
                 new_fcf_pri->fcf_rec.fcf_index);
         goto out;
     }
 
     list_for_each_entry_safe(fcf_pri, next_fcf_pri,
                 &phba->fcf.fcf_pri_list, list) {
         if (new_fcf_pri->fcf_rec.priority <=
                 fcf_pri->fcf_rec.priority) {
             if (fcf_pri->list.prev == &phba->fcf.fcf_pri_list)
                 list_add(&new_fcf_pri->list,
                         &phba->fcf.fcf_pri_list);
             else
                 list_add(&new_fcf_pri->list,
                      &((struct lpfc_fcf_pri *)
                     fcf_pri->list.prev)->list);
             ret = 0;
             goto out;
         } else if (fcf_pri->list.next == &phba->fcf.fcf_pri_list
             || new_fcf_pri->fcf_rec.priority <
                 next_fcf_pri->fcf_rec.priority) {
             list_add(&new_fcf_pri->list, &fcf_pri->list);
             ret = 0;
             goto out;
         }
         if (new_fcf_pri->fcf_rec.priority > fcf_pri->fcf_rec.priority)
             continue;
 
     }
     ret = 1;
 out:
     /* we use = instead of |= to clear the FLOGI_FAILED flag. */
     new_fcf_pri->fcf_rec.flag = LPFC_FCF_ON_PRI_LIST;
     spin_unlock_irq(&phba->hbalock);
     return ret;
 }
 
 /**
  * lpfc_mbx_cmpl_fcf_scan_read_fcf_rec - fcf scan read_fcf mbox cmpl handler.
  * @phba: pointer to lpfc hba data structure.
  * @mboxq: pointer to mailbox object.
  *
  * This function iterates through all the fcf records available in
  * HBA and chooses the optimal FCF record for discovery. After finding
  * the FCF for discovery it registers the FCF record and kicks start
  * discovery.
  * If FCF_IN_USE flag is set in currently used FCF, the routine tries to
  * use an FCF record which matches fabric name and mac address of the
  * currently used FCF record.
  * If the driver supports only one FCF, it will try to use the FCF record
  * used by BOOT_BIOS.
  */
 void
 lpfc_mbx_cmpl_fcf_scan_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
 {
     struct fcf_record *new_fcf_record;
     uint32_t boot_flag, addr_mode;
     uint16_t fcf_index, next_fcf_index;
     struct lpfc_fcf_rec *fcf_rec = NULL;
     uint16_t vlan_id = LPFC_FCOE_NULL_VID;
     bool select_new_fcf;
     int rc;
 
     /* If there is pending FCoE event restart FCF table scan */
     if (lpfc_check_pending_fcoe_event(phba, LPFC_SKIP_UNREG_FCF)) {
         lpfc_sli4_mbox_cmd_free(phba, mboxq);
         return;
     }
 
     /* Parse the FCF record from the non-embedded mailbox command */
     new_fcf_record = lpfc_sli4_fcf_rec_mbox_parse(phba, mboxq,
                               &next_fcf_index);
     if (!new_fcf_record) {
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "2765 Mailbox command READ_FCF_RECORD "
                 "failed to retrieve a FCF record.\n");
         /* Let next new FCF event trigger fast failover */
         spin_lock_irq(&phba->hbalock);
         phba->hba_flag &= ~FCF_TS_INPROG;
         spin_unlock_irq(&phba->hbalock);
         lpfc_sli4_mbox_cmd_free(phba, mboxq);
         return;
     }
 
     /* Check the FCF record against the connection list */
     rc = lpfc_match_fcf_conn_list(phba, new_fcf_record, &boot_flag,
                       &addr_mode, &vlan_id);
 
     /* Log the FCF record information if turned on */
     lpfc_sli4_log_fcf_record_info(phba, new_fcf_record, vlan_id,
                       next_fcf_index);
 
     /*
      * If the fcf record does not match with connect list entries
      * read the next entry; otherwise, this is an eligible FCF
      * record for roundrobin FCF failover.
      */
     if (!rc) {
         lpfc_sli4_fcf_pri_list_del(phba,
                     bf_get(lpfc_fcf_record_fcf_index,
                            new_fcf_record));
         lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
                 "2781 FCF (x%x) failed connection "
                 "list check: (x%x/x%x/%x)\n",
                 bf_get(lpfc_fcf_record_fcf_index,
                        new_fcf_record),
                 bf_get(lpfc_fcf_record_fcf_avail,
                        new_fcf_record),
                 bf_get(lpfc_fcf_record_fcf_valid,
                        new_fcf_record),
                 bf_get(lpfc_fcf_record_fcf_sol,
                        new_fcf_record));
         if ((phba->fcf.fcf_flag & FCF_IN_USE) &&
             lpfc_sli4_fcf_record_match(phba, &phba->fcf.current_rec,
             new_fcf_record, LPFC_FCOE_IGNORE_VID)) {
             if (bf_get(lpfc_fcf_record_fcf_index, new_fcf_record) !=
                 phba->fcf.current_rec.fcf_indx) {
                 lpfc_printf_log(phba, KERN_ERR,
                         LOG_TRACE_EVENT,
                     "2862 FCF (x%x) matches property "
                     "of in-use FCF (x%x)\n",
                     bf_get(lpfc_fcf_record_fcf_index,
                            new_fcf_record),
                     phba->fcf.current_rec.fcf_indx);
                 goto read_next_fcf;
             }
             /*
              * In case the current in-use FCF record becomes
              * invalid/unavailable during FCF discovery that
              * was not triggered by fast FCF failover process,
              * treat it as fast FCF failover.
              */
             if (!(phba->fcf.fcf_flag & FCF_REDISC_PEND) &&
                 !(phba->fcf.fcf_flag & FCF_REDISC_FOV)) {
                 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
                         "2835 Invalid in-use FCF "
                         "(x%x), enter FCF failover "
                         "table scan.\n",
                         phba->fcf.current_rec.fcf_indx);
                 spin_lock_irq(&phba->hbalock);
                 phba->fcf.fcf_flag |= FCF_REDISC_FOV;
                 spin_unlock_irq(&phba->hbalock);
                 lpfc_sli4_mbox_cmd_free(phba, mboxq);
                 lpfc_sli4_fcf_scan_read_fcf_rec(phba,
                         LPFC_FCOE_FCF_GET_FIRST);
                 return;
             }
         }
         goto read_next_fcf;
     } else {
         fcf_index = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record);
         rc = lpfc_sli4_fcf_pri_list_add(phba, fcf_index,
                             new_fcf_record);
         if (rc)
             goto read_next_fcf;
     }
 
     /*
      * If this is not the first FCF discovery of the HBA, use last
      * FCF record for the discovery. The condition that a rescan
      * matches the in-use FCF record: fabric name, switch name, mac
      * address, and vlan_id.
      */
     spin_lock_irq(&phba->hbalock);
     if (phba->fcf.fcf_flag & FCF_IN_USE) {
         if (phba->cfg_fcf_failover_policy == LPFC_FCF_FOV &&
             lpfc_sli4_fcf_record_match(phba, &phba->fcf.current_rec,
             new_fcf_record, vlan_id)) {
             if (bf_get(lpfc_fcf_record_fcf_index, new_fcf_record) ==
                 phba->fcf.current_rec.fcf_indx) {
                 phba->fcf.fcf_flag |= FCF_AVAILABLE;
                 if (phba->fcf.fcf_flag & FCF_REDISC_PEND)
                     /* Stop FCF redisc wait timer */
                     __lpfc_sli4_stop_fcf_redisc_wait_timer(
                                     phba);
                 else if (phba->fcf.fcf_flag & FCF_REDISC_FOV)
                     /* Fast failover, mark completed */
                     phba->fcf.fcf_flag &= ~FCF_REDISC_FOV;
                 spin_unlock_irq(&phba->hbalock);
                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
                         "2836 New FCF matches in-use "
                         "FCF (x%x), port_state:x%x, "
                         "fc_flag:x%x\n",
                         phba->fcf.current_rec.fcf_indx,
                         phba->pport->port_state,
                         phba->pport->fc_flag);
                 goto out;
             } else
                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                     "2863 New FCF (x%x) matches "
                     "property of in-use FCF (x%x)\n",
                     bf_get(lpfc_fcf_record_fcf_index,
                            new_fcf_record),
                     phba->fcf.current_rec.fcf_indx);
         }
         /*
          * Read next FCF record from HBA searching for the matching
          * with in-use record only if not during the fast failover
          * period. In case of fast failover period, it shall try to
          * determine whether the FCF record just read should be the
          * next candidate.
          */
         if (!(phba->fcf.fcf_flag & FCF_REDISC_FOV)) {
             spin_unlock_irq(&phba->hbalock);
             goto read_next_fcf;
         }
     }
     /*
      * Update on failover FCF record only if it's in FCF fast-failover
      * period; otherwise, update on current FCF record.
      */
     if (phba->fcf.fcf_flag & FCF_REDISC_FOV)
         fcf_rec = &phba->fcf.failover_rec;
     else
         fcf_rec = &phba->fcf.current_rec;
 
     if (phba->fcf.fcf_flag & FCF_AVAILABLE) {
         /*
          * If the driver FCF record does not have boot flag
          * set and new hba fcf record has boot flag set, use
          * the new hba fcf record.
          */
         if (boot_flag && !(fcf_rec->flag & BOOT_ENABLE)) {
             /* Choose this FCF record */
             lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
                     "2837 Update current FCF record "
                     "(x%x) with new FCF record (x%x)\n",
                     fcf_rec->fcf_indx,
                     bf_get(lpfc_fcf_record_fcf_index,
                     new_fcf_record));
             __lpfc_update_fcf_record(phba, fcf_rec, new_fcf_record,
                     addr_mode, vlan_id, BOOT_ENABLE);
             spin_unlock_irq(&phba->hbalock);
             goto read_next_fcf;
         }
         /*
          * If the driver FCF record has boot flag set and the
          * new hba FCF record does not have boot flag, read
          * the next FCF record.
          */
         if (!boot_flag && (fcf_rec->flag & BOOT_ENABLE)) {
             spin_unlock_irq(&phba->hbalock);
             goto read_next_fcf;
         }
         /*
          * If the new hba FCF record has lower priority value
          * than the driver FCF record, use the new record.
          */
         if (new_fcf_record->fip_priority < fcf_rec->priority) {
             /* Choose the new FCF record with lower priority */
             lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
                     "2838 Update current FCF record "
                     "(x%x) with new FCF record (x%x)\n",
                     fcf_rec->fcf_indx,
                     bf_get(lpfc_fcf_record_fcf_index,
                            new_fcf_record));
             __lpfc_update_fcf_record(phba, fcf_rec, new_fcf_record,
                     addr_mode, vlan_id, 0);
             /* Reset running random FCF selection count */
             phba->fcf.eligible_fcf_cnt = 1;
         } else if (new_fcf_record->fip_priority == fcf_rec->priority) {
             /* Update running random FCF selection count */
             phba->fcf.eligible_fcf_cnt++;
             select_new_fcf = lpfc_sli4_new_fcf_random_select(phba,
                         phba->fcf.eligible_fcf_cnt);
             if (select_new_fcf) {
                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
                     "2839 Update current FCF record "
                     "(x%x) with new FCF record (x%x)\n",
                     fcf_rec->fcf_indx,
                     bf_get(lpfc_fcf_record_fcf_index,
                            new_fcf_record));
                 /* Choose the new FCF by random selection */
                 __lpfc_update_fcf_record(phba, fcf_rec,
                              new_fcf_record,
                              addr_mode, vlan_id, 0);
             }
         }
         spin_unlock_irq(&phba->hbalock);
         goto read_next_fcf;
     }
     /*
      * This is the first suitable FCF record, choose this record for
      * initial best-fit FCF.
      */
     if (fcf_rec) {
         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
                 "2840 Update initial FCF candidate "
                 "with FCF (x%x)\n",
                 bf_get(lpfc_fcf_record_fcf_index,
                        new_fcf_record));
         __lpfc_update_fcf_record(phba, fcf_rec, new_fcf_record,
                      addr_mode, vlan_id, (boot_flag ?
                      BOOT_ENABLE : 0));
         phba->fcf.fcf_flag |= FCF_AVAILABLE;
         /* Setup initial running random FCF selection count */
         phba->fcf.eligible_fcf_cnt = 1;
     }
     spin_unlock_irq(&phba->hbalock);
     goto read_next_fcf;
 
 read_next_fcf:
     lpfc_sli4_mbox_cmd_free(phba, mboxq);
     if (next_fcf_index == LPFC_FCOE_FCF_NEXT_NONE || next_fcf_index == 0) {
         if (phba->fcf.fcf_flag & FCF_REDISC_FOV) {
             /*
              * Case of FCF fast failover scan
              */
 
             /*
              * It has not found any suitable FCF record, cancel
              * FCF scan inprogress, and do nothing
              */
             if (!(phba->fcf.failover_rec.flag & RECORD_VALID)) {
                 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
                            "2782 No suitable FCF found: "
                            "(x%x/x%x)\n",
                            phba->fcoe_eventtag_at_fcf_scan,
                            bf_get(lpfc_fcf_record_fcf_index,
                               new_fcf_record));
                 spin_lock_irq(&phba->hbalock);
                 if (phba->hba_flag & HBA_DEVLOSS_TMO) {
                     phba->hba_flag &= ~FCF_TS_INPROG;
                     spin_unlock_irq(&phba->hbalock);
                     /* Unregister in-use FCF and rescan */
                     lpfc_printf_log(phba, KERN_INFO,
                             LOG_FIP,
                             "2864 On devloss tmo "
                             "unreg in-use FCF and "
                             "rescan FCF table\n");
                     lpfc_unregister_fcf_rescan(phba);
                     return;
                 }
                 /*
                  * Let next new FCF event trigger fast failover
                  */
                 phba->hba_flag &= ~FCF_TS_INPROG;
                 spin_unlock_irq(&phba->hbalock);
                 return;
             }
             /*
              * It has found a suitable FCF record that is not
              * the same as in-use FCF record, unregister the
              * in-use FCF record, replace the in-use FCF record
              * with the new FCF record, mark FCF fast failover
              * completed, and then start register the new FCF
              * record.
              */
 
             /* Unregister the current in-use FCF record */
             lpfc_unregister_fcf(phba);
 
             /* Replace in-use record with the new record */
             lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
                     "2842 Replace in-use FCF (x%x) "
                     "with failover FCF (x%x)\n",
                     phba->fcf.current_rec.fcf_indx,
                     phba->fcf.failover_rec.fcf_indx);
             memcpy(&phba->fcf.current_rec,
                    &phba->fcf.failover_rec,
                    sizeof(struct lpfc_fcf_rec));
             /*
              * Mark the fast FCF failover rediscovery completed
              * and the start of the first round of the roundrobin
              * FCF failover.
              */
             spin_lock_irq(&phba->hbalock);
             phba->fcf.fcf_flag &= ~FCF_REDISC_FOV;
             spin_unlock_irq(&phba->hbalock);
             /* Register to the new FCF record */
             lpfc_register_fcf(phba);
         } else {
             /*
              * In case of transaction period to fast FCF failover,
              * do nothing when search to the end of the FCF table.
              */
             if ((phba->fcf.fcf_flag & FCF_REDISC_EVT) ||
                 (phba->fcf.fcf_flag & FCF_REDISC_PEND))
                 return;
 
             if (phba->cfg_fcf_failover_policy == LPFC_FCF_FOV &&
                 phba->fcf.fcf_flag & FCF_IN_USE) {
                 /*
                  * In case the current in-use FCF record no
                  * longer existed during FCF discovery that
                  * was not triggered by fast FCF failover
                  * process, treat it as fast FCF failover.
                  */
                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
                         "2841 In-use FCF record (x%x) "
                         "not reported, entering fast "
                         "FCF failover mode scanning.\n",
                         phba->fcf.current_rec.fcf_indx);
                 spin_lock_irq(&phba->hbalock);
                 phba->fcf.fcf_flag |= FCF_REDISC_FOV;
                 spin_unlock_irq(&phba->hbalock);
                 lpfc_sli4_fcf_scan_read_fcf_rec(phba,
                         LPFC_FCOE_FCF_GET_FIRST);
                 return;
             }
             /* Register to the new FCF record */
             lpfc_register_fcf(phba);
         }
     } else
         lpfc_sli4_fcf_scan_read_fcf_rec(phba, next_fcf_index);
     return;
 
 out:
     lpfc_sli4_mbox_cmd_free(phba, mboxq);
     lpfc_register_fcf(phba);
 
     return;
 }
 
 /**
  * lpfc_mbx_cmpl_fcf_rr_read_fcf_rec - fcf roundrobin read_fcf mbox cmpl hdler
  * @phba: pointer to lpfc hba data structure.
  * @mboxq: pointer to mailbox object.
  *
  * This is the callback function for FLOGI failure roundrobin FCF failover
  * read FCF record mailbox command from the eligible FCF record bmask for
  * performing the failover. If the FCF read back is not valid/available, it
  * fails through to retrying FLOGI to the currently registered FCF again.
  * Otherwise, if the FCF read back is valid and available, it will set the
  * newly read FCF record to the failover FCF record, unregister currently
  * registered FCF record, copy the failover FCF record to the current
  * FCF record, and then register the current FCF record before proceeding
  * to trying FLOGI on the new failover FCF.
  */
 void
 lpfc_mbx_cmpl_fcf_rr_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
 {
     struct fcf_record *new_fcf_record;
     uint32_t boot_flag, addr_mode;
     uint16_t next_fcf_index, fcf_index;
     uint16_t current_fcf_index;
     uint16_t vlan_id;
     int rc;
 
     /* If link state is not up, stop the roundrobin failover process */
     if (phba->link_state < LPFC_LINK_UP) {
         spin_lock_irq(&phba->hbalock);
         phba->fcf.fcf_flag &= ~FCF_DISCOVERY;
         phba->hba_flag &= ~FCF_RR_INPROG;
         spin_unlock_irq(&phba->hbalock);
         goto out;
     }
 
     /* Parse the FCF record from the non-embedded mailbox command */
     new_fcf_record = lpfc_sli4_fcf_rec_mbox_parse(phba, mboxq,
                               &next_fcf_index);
     if (!new_fcf_record) {
         lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
                 "2766 Mailbox command READ_FCF_RECORD "
                 "failed to retrieve a FCF record. "
                 "hba_flg x%x fcf_flg x%x\n", phba->hba_flag,
                 phba->fcf.fcf_flag);
         lpfc_unregister_fcf_rescan(phba);
         goto out;
     }
 
     /* Get the needed parameters from FCF record */
     rc = lpfc_match_fcf_conn_list(phba, new_fcf_record, &boot_flag,
                       &addr_mode, &vlan_id);
 
     /* Log the FCF record information if turned on */
     lpfc_sli4_log_fcf_record_info(phba, new_fcf_record, vlan_id,
                       next_fcf_index);
 
     fcf_index = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record);
     if (!rc) {
         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
                 "2848 Remove ineligible FCF (x%x) from "
                 "from roundrobin bmask\n", fcf_index);
         /* Clear roundrobin bmask bit for ineligible FCF */
         lpfc_sli4_fcf_rr_index_clear(phba, fcf_index);
         /* Perform next round of roundrobin FCF failover */
         fcf_index = lpfc_sli4_fcf_rr_next_index_get(phba);
         rc = lpfc_sli4_fcf_rr_next_proc(phba->pport, fcf_index);
         if (rc)
             goto out;
         goto error_out;
     }
 
     if (fcf_index == phba->fcf.current_rec.fcf_indx) {
         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
                 "2760 Perform FLOGI roundrobin FCF failover: "
                 "FCF (x%x) back to FCF (x%x)\n",
                 phba->fcf.current_rec.fcf_indx, fcf_index);
         /* Wait 500 ms before retrying FLOGI to current FCF */
         msleep(500);
         lpfc_issue_init_vfi(phba->pport);
         goto out;
     }
 
     /* Upload new FCF record to the failover FCF record */
     lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
             "2834 Update current FCF (x%x) with new FCF (x%x)\n",
             phba->fcf.failover_rec.fcf_indx, fcf_index);
     spin_lock_irq(&phba->hbalock);
     __lpfc_update_fcf_record(phba, &phba->fcf.failover_rec,
                  new_fcf_record, addr_mode, vlan_id,
                  (boot_flag ? BOOT_ENABLE : 0));
     spin_unlock_irq(&phba->hbalock);
 
     current_fcf_index = phba->fcf.current_rec.fcf_indx;
 
     /* Unregister the current in-use FCF record */
     lpfc_unregister_fcf(phba);
 
     /* Replace in-use record with the new record */
     memcpy(&phba->fcf.current_rec, &phba->fcf.failover_rec,
            sizeof(struct lpfc_fcf_rec));
 
     lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
             "2783 Perform FLOGI roundrobin FCF failover: FCF "
             "(x%x) to FCF (x%x)\n", current_fcf_index, fcf_index);
 
 error_out:
     lpfc_register_fcf(phba);
 out:
     lpfc_sli4_mbox_cmd_free(phba, mboxq);
 }
 
 /**
  * lpfc_mbx_cmpl_read_fcf_rec - read fcf completion handler.
  * @phba: pointer to lpfc hba data structure.
  * @mboxq: pointer to mailbox object.
  *
  * This is the callback function of read FCF record mailbox command for
  * updating the eligible FCF bmask for FLOGI failure roundrobin FCF
  * failover when a new FCF event happened. If the FCF read back is
  * valid/available and it passes the connection list check, it updates
  * the bmask for the eligible FCF record for roundrobin failover.
  */
 void
 lpfc_mbx_cmpl_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
 {
     struct fcf_record *new_fcf_record;
     uint32_t boot_flag, addr_mode;
     uint16_t fcf_index, next_fcf_index;
     uint16_t vlan_id;
     int rc;
 
     /* If link state is not up, no need to proceed */
     if (phba->link_state < LPFC_LINK_UP)
         goto out;
 
     /* If FCF discovery period is over, no need to proceed */
     if (!(phba->fcf.fcf_flag & FCF_DISCOVERY))
         goto out;
 
     /* Parse the FCF record from the non-embedded mailbox command */
     new_fcf_record = lpfc_sli4_fcf_rec_mbox_parse(phba, mboxq,
                               &next_fcf_index);
     if (!new_fcf_record) {
         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
                 "2767 Mailbox command READ_FCF_RECORD "
                 "failed to retrieve a FCF record.\n");
         goto out;
     }
 
     /* Check the connection list for eligibility */
     rc = lpfc_match_fcf_conn_list(phba, new_fcf_record, &boot_flag,
                       &addr_mode, &vlan_id);
 
     /* Log the FCF record information if turned on */
     lpfc_sli4_log_fcf_record_info(phba, new_fcf_record, vlan_id,
                       next_fcf_index);
 
     if (!rc)
         goto out;
 
     /* Update the eligible FCF record index bmask */
     fcf_index = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record);
 
     rc = lpfc_sli4_fcf_pri_list_add(phba, fcf_index, new_fcf_record);
 
 out:
     lpfc_sli4_mbox_cmd_free(phba, mboxq);
 }
 
 /**
  * lpfc_init_vfi_cmpl - Completion handler for init_vfi mbox command.
  * @phba: pointer to lpfc hba data structure.
  * @mboxq: pointer to mailbox data structure.
  *
  * This function handles completion of init vfi mailbox command.
  */
 static void
 lpfc_init_vfi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
 {
     struct lpfc_vport *vport = mboxq->vport;
 
     /*
      * VFI not supported on interface type 0, just do the flogi
      * Also continue if the VFI is in use - just use the same one.
      */
     if (mboxq->u.mb.mbxStatus &&
         (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) !=
             LPFC_SLI_INTF_IF_TYPE_0) &&
         mboxq->u.mb.mbxStatus != MBX_VFI_IN_USE) {
         lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
                  "2891 Init VFI mailbox failed 0x%x\n",
                  mboxq->u.mb.mbxStatus);
         mempool_free(mboxq, phba->mbox_mem_pool);
         lpfc_vport_set_state(vport, FC_VPORT_FAILED);
         return;
     }
 
     lpfc_initial_flogi(vport);
     mempool_free(mboxq, phba->mbox_mem_pool);
     return;
 }
 
 /**
  * lpfc_issue_init_vfi - Issue init_vfi mailbox command.
  * @vport: pointer to lpfc_vport data structure.
  *
  * This function issue a init_vfi mailbox command to initialize the VFI and
  * VPI for the physical port.
  */
 void
 lpfc_issue_init_vfi(struct lpfc_vport *vport)
 {
     LPFC_MBOXQ_t *mboxq;
     int rc;
     struct lpfc_hba *phba = vport->phba;
 
     mboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
     if (!mboxq) {
         lpfc_printf_vlog(vport, KERN_ERR,
             LOG_TRACE_EVENT, "2892 Failed to allocate "
             "init_vfi mailbox\n");
         return;
     }
     lpfc_init_vfi(mboxq, vport);
     mboxq->mbox_cmpl = lpfc_init_vfi_cmpl;
     rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_NOWAIT);
     if (rc == MBX_NOT_FINISHED) {
         lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
                  "2893 Failed to issue init_vfi mailbox\n");
         mempool_free(mboxq, vport->phba->mbox_mem_pool);
     }
 }
 
 /**
  * lpfc_init_vpi_cmpl - Completion handler for init_vpi mbox command.
  * @phba: pointer to lpfc hba data structure.
  * @mboxq: pointer to mailbox data structure.
  *
  * This function handles completion of init vpi mailbox command.
  */
 void
 lpfc_init_vpi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
 {
     struct lpfc_vport *vport = mboxq->vport;
     struct lpfc_nodelist *ndlp;
     struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
 
     if (mboxq->u.mb.mbxStatus) {
         lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
                  "2609 Init VPI mailbox failed 0x%x\n",
                  mboxq->u.mb.mbxStatus);
         mempool_free(mboxq, phba->mbox_mem_pool);
         lpfc_vport_set_state(vport, FC_VPORT_FAILED);
         return;
     }
     spin_lock_irq(shost->host_lock);
     vport->fc_flag &= ~FC_VPORT_NEEDS_INIT_VPI;
     spin_unlock_irq(shost->host_lock);
 
     /* If this port is physical port or FDISC is done, do reg_vpi */
     if ((phba->pport == vport) || (vport->port_state == LPFC_FDISC)) {
             ndlp = lpfc_findnode_did(vport, Fabric_DID);
             if (!ndlp)
                 lpfc_printf_vlog(vport, KERN_ERR,
                     LOG_TRACE_EVENT,
                     "2731 Cannot find fabric "
                     "controller node\n");
             else
                 lpfc_register_new_vport(phba, vport, ndlp);
             mempool_free(mboxq, phba->mbox_mem_pool);
             return;
     }
 
     if (phba->link_flag & LS_NPIV_FAB_SUPPORTED)
         lpfc_initial_fdisc(vport);
     else {
         lpfc_vport_set_state(vport, FC_VPORT_NO_FABRIC_SUPP);
         lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
                  "2606 No NPIV Fabric support\n");
     }
     mempool_free(mboxq, phba->mbox_mem_pool);
     return;
 }
 
 /**
  * lpfc_issue_init_vpi - Issue init_vpi mailbox command.
  * @vport: pointer to lpfc_vport data structure.
  *
  * This function issue a init_vpi mailbox command to initialize
  * VPI for the vport.
  */
 void
 lpfc_issue_init_vpi(struct lpfc_vport *vport)
 {
     LPFC_MBOXQ_t *mboxq;
     int rc, vpi;
 
     if ((vport->port_type != LPFC_PHYSICAL_PORT) && (!vport->vpi)) {
         vpi = lpfc_alloc_vpi(vport->phba);
         if (!vpi) {
             lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
                      "3303 Failed to obtain vport vpi\n");
             lpfc_vport_set_state(vport, FC_VPORT_FAILED);
             return;
         }
         vport->vpi = vpi;
     }
 
     mboxq = mempool_alloc(vport->phba->mbox_mem_pool, GFP_KERNEL);
     if (!mboxq) {
         lpfc_printf_vlog(vport, KERN_ERR,
             LOG_TRACE_EVENT, "2607 Failed to allocate "
             "init_vpi mailbox\n");
         return;
     }
     lpfc_init_vpi(vport->phba, mboxq, vport->vpi);
     mboxq->vport = vport;
     mboxq->mbox_cmpl = lpfc_init_vpi_cmpl;
     rc = lpfc_sli_issue_mbox(vport->phba, mboxq, MBX_NOWAIT);
     if (rc == MBX_NOT_FINISHED) {
         lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
                  "2608 Failed to issue init_vpi mailbox\n");
         mempool_free(mboxq, vport->phba->mbox_mem_pool);
     }
 }
 
 /**
  * lpfc_start_fdiscs - send fdiscs for each vports on this port.
  * @phba: pointer to lpfc hba data structure.
  *
  * This function loops through the list of vports on the @phba and issues an
  * FDISC if possible.
  */
 void
 lpfc_start_fdiscs(struct lpfc_hba *phba)
 {
     struct lpfc_vport **vports;
     int i;
 
     vports = lpfc_create_vport_work_array(phba);
     if (vports != NULL) {
         for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
             if (vports[i]->port_type == LPFC_PHYSICAL_PORT)
                 continue;
             /* There are no vpi for this vport */
             if (vports[i]->vpi > phba->max_vpi) {
                 lpfc_vport_set_state(vports[i],
                              FC_VPORT_FAILED);
                 continue;
             }
             if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
                 lpfc_vport_set_state(vports[i],
                              FC_VPORT_LINKDOWN);
                 continue;
             }
             if (vports[i]->fc_flag & FC_VPORT_NEEDS_INIT_VPI) {
                 lpfc_issue_init_vpi(vports[i]);
                 continue;
             }
             if (phba->link_flag & LS_NPIV_FAB_SUPPORTED)
                 lpfc_initial_fdisc(vports[i]);
             else {
                 lpfc_vport_set_state(vports[i],
                              FC_VPORT_NO_FABRIC_SUPP);
                 lpfc_printf_vlog(vports[i], KERN_ERR,
                          LOG_TRACE_EVENT,
                          "0259 No NPIV "
                          "Fabric support\n");
             }
         }
     }
     lpfc_destroy_vport_work_array(phba, vports);
 }
 
 void
 lpfc_mbx_cmpl_reg_vfi(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
 {
     struct lpfc_vport *vport = mboxq->vport;
     struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
 
     /*
      * VFI not supported for interface type 0, so ignore any mailbox
      * error (except VFI in use) and continue with the discovery.
      */
     if (mboxq->u.mb.mbxStatus &&
         (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) !=
             LPFC_SLI_INTF_IF_TYPE_0) &&
         mboxq->u.mb.mbxStatus != MBX_VFI_IN_USE) {
         lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
                  "2018 REG_VFI mbxStatus error x%x "
                  "HBA state x%x\n",
                  mboxq->u.mb.mbxStatus, vport->port_state);
         if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
             /* FLOGI failed, use loop map to make discovery list */
             lpfc_disc_list_loopmap(vport);
             /* Start discovery */
             lpfc_disc_start(vport);
             goto out_free_mem;
         }
         lpfc_vport_set_state(vport, FC_VPORT_FAILED);
         goto out_free_mem;
     }
 
     /* If the VFI is already registered, there is nothing else to do
      * Unless this was a VFI update and we are in PT2PT mode, then
      * we should drop through to set the port state to ready.
      */
     if (vport->fc_flag & FC_VFI_REGISTERED)
         if (!(phba->sli_rev == LPFC_SLI_REV4 &&
               vport->fc_flag & FC_PT2PT))
             goto out_free_mem;
 
     /* The VPI is implicitly registered when the VFI is registered */
     spin_lock_irq(shost->host_lock);
     vport->vpi_state |= LPFC_VPI_REGISTERED;
     vport->fc_flag |= FC_VFI_REGISTERED;
     vport->fc_flag &= ~FC_VPORT_NEEDS_REG_VPI;
     vport->fc_flag &= ~FC_VPORT_NEEDS_INIT_VPI;
     spin_unlock_irq(shost->host_lock);
 
     /* In case SLI4 FC loopback test, we are ready */
     if ((phba->sli_rev == LPFC_SLI_REV4) &&
         (phba->link_flag & LS_LOOPBACK_MODE)) {
         phba->link_state = LPFC_HBA_READY;
         goto out_free_mem;
     }
 
     lpfc_printf_vlog(vport, KERN_INFO, LOG_SLI,
              "3313 cmpl reg vfi  port_state:%x fc_flag:%x myDid:%x "
              "alpacnt:%d LinkState:%x topology:%x\n",
              vport->port_state, vport->fc_flag, vport->fc_myDID,
              vport->phba->alpa_map[0],
              phba->link_state, phba->fc_topology);
 
     if (vport->port_state == LPFC_FABRIC_CFG_LINK) {
         /*
          * For private loop or for NPort pt2pt,
          * just start discovery and we are done.
          */
         if ((vport->fc_flag & FC_PT2PT) ||
             ((phba->fc_topology == LPFC_TOPOLOGY_LOOP) &&
             !(vport->fc_flag & FC_PUBLIC_LOOP))) {
 
             /* Use loop map to make discovery list */
             lpfc_disc_list_loopmap(vport);
             /* Start discovery */
             if (vport->fc_flag & FC_PT2PT)
                 vport->port_state = LPFC_VPORT_READY;
             else
                 lpfc_disc_start(vport);
         } else {
             lpfc_start_fdiscs(phba);
             lpfc_do_scr_ns_plogi(phba, vport);
         }
     }
 
 out_free_mem:
     lpfc_mbox_rsrc_cleanup(phba, mboxq, MBOX_THD_UNLOCKED);
 }
 
 static void
 lpfc_mbx_cmpl_read_sparam(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
 {
     MAILBOX_t *mb = &pmb->u.mb;
     struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *)pmb->ctx_buf;
     struct lpfc_vport  *vport = pmb->vport;
     struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
     struct serv_parm *sp = &vport->fc_sparam;
     uint32_t ed_tov;
 
     /* Check for error */
     if (mb->mbxStatus) {
         /* READ_SPARAM mbox error <mbxStatus> state <hba_state> */
         lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
                  "0319 READ_SPARAM mbxStatus error x%x "
                  "hba state x%x>\n",
                  mb->mbxStatus, vport->port_state);
         lpfc_linkdown(phba);
         goto out;
     }
 
     memcpy((uint8_t *) &vport->fc_sparam, (uint8_t *) mp->virt,
            sizeof (struct serv_parm));
 
     ed_tov = be32_to_cpu(sp->cmn.e_d_tov);
     if (sp->cmn.edtovResolution)    /* E_D_TOV ticks are in nanoseconds */
         ed_tov = (ed_tov + 999999) / 1000000;
 
     phba->fc_edtov = ed_tov;
     phba->fc_ratov = (2 * ed_tov) / 1000;
     if (phba->fc_ratov < FF_DEF_RATOV) {
         /* RA_TOV should be atleast 10sec for initial flogi */
         phba->fc_ratov = FF_DEF_RATOV;
     }
 
     lpfc_update_vport_wwn(vport);
     fc_host_port_name(shost) = wwn_to_u64(vport->fc_portname.u.wwn);
     if (vport->port_type == LPFC_PHYSICAL_PORT) {
         memcpy(&phba->wwnn, &vport->fc_nodename, sizeof(phba->wwnn));
         memcpy(&phba->wwpn, &vport->fc_portname, sizeof(phba->wwnn));
     }
 
     lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED);
 
     /* Check if sending the FLOGI is being deferred to after we get
      * up to date CSPs from MBX_READ_SPARAM.
      */
     if (phba->hba_flag & HBA_DEFER_FLOGI) {
         lpfc_initial_flogi(vport);
         phba->hba_flag &= ~HBA_DEFER_FLOGI;
     }
     return;
 
 out:
     lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED);
     lpfc_issue_clear_la(phba, vport);
 }
 
 static void
 lpfc_mbx_process_link_up(struct lpfc_hba *phba, struct lpfc_mbx_read_top *la)
 {
     struct lpfc_vport *vport = phba->pport;
     LPFC_MBOXQ_t *sparam_mbox, *cfglink_mbox = NULL;
     struct Scsi_Host *shost;
     int i;
     int rc;
     struct fcf_record *fcf_record;
     uint32_t fc_flags = 0;
     unsigned long iflags;
 
     spin_lock_irqsave(&phba->hbalock, iflags);
     phba->fc_linkspeed = bf_get(lpfc_mbx_read_top_link_spd, la);
 
     if (!(phba->hba_flag & HBA_FCOE_MODE)) {
         switch (bf_get(lpfc_mbx_read_top_link_spd, la)) {
         case LPFC_LINK_SPEED_1GHZ:
         case LPFC_LINK_SPEED_2GHZ:
         case LPFC_LINK_SPEED_4GHZ:
         case LPFC_LINK_SPEED_8GHZ:
         case LPFC_LINK_SPEED_10GHZ:
         case LPFC_LINK_SPEED_16GHZ:
         case LPFC_LINK_SPEED_32GHZ:
         case LPFC_LINK_SPEED_64GHZ:
         case LPFC_LINK_SPEED_128GHZ:
         case LPFC_LINK_SPEED_256GHZ:
             break;
         default:
             phba->fc_linkspeed = LPFC_LINK_SPEED_UNKNOWN;
             break;
         }
     }
 
     if (phba->fc_topology &&
         phba->fc_topology != bf_get(lpfc_mbx_read_top_topology, la)) {
         lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
                 "3314 Toplogy changed was 0x%x is 0x%x\n",
                 phba->fc_topology,
                 bf_get(lpfc_mbx_read_top_topology, la));
         phba->fc_topology_changed = 1;
     }
 
     phba->fc_topology = bf_get(lpfc_mbx_read_top_topology, la);
     phba->link_flag &= ~(LS_NPIV_FAB_SUPPORTED | LS_CT_VEN_RPA);
 
     shost = lpfc_shost_from_vport(vport);
     if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
         phba->sli3_options &= ~LPFC_SLI3_NPIV_ENABLED;
 
         /* if npiv is enabled and this adapter supports npiv log
          * a message that npiv is not supported in this topology
          */
         if (phba->cfg_enable_npiv && phba->max_vpi)
             lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
                 "1309 Link Up Event npiv not supported in loop "
                 "topology\n");
                 /* Get Loop Map information */
         if (bf_get(lpfc_mbx_read_top_il, la))
             fc_flags |= FC_LBIT;
 
         vport->fc_myDID = bf_get(lpfc_mbx_read_top_alpa_granted, la);
         i = la->lilpBde64.tus.f.bdeSize;
 
         if (i == 0) {
             phba->alpa_map[0] = 0;
         } else {
             if (vport->cfg_log_verbose & LOG_LINK_EVENT) {
                 int numalpa, j, k;
                 union {
                     uint8_t pamap[16];
                     struct {
                         uint32_t wd1;
                         uint32_t wd2;
                         uint32_t wd3;
                         uint32_t wd4;
                     } pa;
                 } un;
                 numalpa = phba->alpa_map[0];
                 j = 0;
                 while (j < numalpa) {
                     memset(un.pamap, 0, 16);
                     for (k = 1; j < numalpa; k++) {
                         un.pamap[k - 1] =
                             phba->alpa_map[j + 1];
                         j++;
                         if (k == 16)
                             break;
                     }
                     /* Link Up Event ALPA map */
                     lpfc_printf_log(phba,
                             KERN_WARNING,
                             LOG_LINK_EVENT,
                             "1304 Link Up Event "
                             "ALPA map Data: x%x "
                             "x%x x%x x%x\n",
                             un.pa.wd1, un.pa.wd2,
                             un.pa.wd3, un.pa.wd4);
                 }
             }
         }
     } else {
         if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)) {
             if (phba->max_vpi && phba->cfg_enable_npiv &&
                (phba->sli_rev >= LPFC_SLI_REV3))
                 phba->sli3_options |= LPFC_SLI3_NPIV_ENABLED;
         }
         vport->fc_myDID = phba->fc_pref_DID;
         fc_flags |= FC_LBIT;
     }
     spin_unlock_irqrestore(&phba->hbalock, iflags);
 
     if (fc_flags) {
         spin_lock_irqsave(shost->host_lock, iflags);
         vport->fc_flag |= fc_flags;
         spin_unlock_irqrestore(shost->host_lock, iflags);
     }
 
     lpfc_linkup(phba);
     sparam_mbox = NULL;
 
     sparam_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
     if (!sparam_mbox)
         goto out;
 
     rc = lpfc_read_sparam(phba, sparam_mbox, 0);
     if (rc) {
         mempool_free(sparam_mbox, phba->mbox_mem_pool);
         goto out;
     }
     sparam_mbox->vport = vport;
     sparam_mbox->mbox_cmpl = lpfc_mbx_cmpl_read_sparam;
     rc = lpfc_sli_issue_mbox(phba, sparam_mbox, MBX_NOWAIT);
     if (rc == MBX_NOT_FINISHED) {
         lpfc_mbox_rsrc_cleanup(phba, sparam_mbox, MBOX_THD_UNLOCKED);
         goto out;
     }
 
     if (!(phba->hba_flag & HBA_FCOE_MODE)) {
         cfglink_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
         if (!cfglink_mbox)
             goto out;
         vport->port_state = LPFC_LOCAL_CFG_LINK;
         lpfc_config_link(phba, cfglink_mbox);
         cfglink_mbox->vport = vport;
         cfglink_mbox->mbox_cmpl = lpfc_mbx_cmpl_local_config_link;
         rc = lpfc_sli_issue_mbox(phba, cfglink_mbox, MBX_NOWAIT);
         if (rc == MBX_NOT_FINISHED) {
             mempool_free(cfglink_mbox, phba->mbox_mem_pool);
             goto out;
         }
     } else {
         vport->port_state = LPFC_VPORT_UNKNOWN;
         /*
          * Add the driver's default FCF record at FCF index 0 now. This
          * is phase 1 implementation that support FCF index 0 and driver
          * defaults.
          */
         if (!(phba->hba_flag & HBA_FIP_SUPPORT)) {
             fcf_record = kzalloc(sizeof(struct fcf_record),
                     GFP_KERNEL);
             if (unlikely(!fcf_record)) {
                 lpfc_printf_log(phba, KERN_ERR,
                     LOG_TRACE_EVENT,
                     "2554 Could not allocate memory for "
                     "fcf record\n");
                 rc = -ENODEV;
                 goto out;
             }
 
             lpfc_sli4_build_dflt_fcf_record(phba, fcf_record,
                         LPFC_FCOE_FCF_DEF_INDEX);
             rc = lpfc_sli4_add_fcf_record(phba, fcf_record);
             if (unlikely(rc)) {
                 lpfc_printf_log(phba, KERN_ERR,
                     LOG_TRACE_EVENT,
                     "2013 Could not manually add FCF "
                     "record 0, status %d\n", rc);
                 rc = -ENODEV;
                 kfree(fcf_record);
                 goto out;
             }
             kfree(fcf_record);
         }
         /*
          * The driver is expected to do FIP/FCF. Call the port
          * and get the FCF Table.
          */
         spin_lock_irqsave(&phba->hbalock, iflags);
         if (phba->hba_flag & FCF_TS_INPROG) {
             spin_unlock_irqrestore(&phba->hbalock, iflags);
             return;
         }
         /* This is the initial FCF discovery scan */
         phba->fcf.fcf_flag |= FCF_INIT_DISC;
         spin_unlock_irqrestore(&phba->hbalock, iflags);
         lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY,
                 "2778 Start FCF table scan at linkup\n");
         rc = lpfc_sli4_fcf_scan_read_fcf_rec(phba,
                              LPFC_FCOE_FCF_GET_FIRST);
         if (rc) {
             spin_lock_irqsave(&phba->hbalock, iflags);
             phba->fcf.fcf_flag &= ~FCF_INIT_DISC;
             spin_unlock_irqrestore(&phba->hbalock, iflags);
             goto out;
         }
         /* Reset FCF roundrobin bmask for new discovery */
         lpfc_sli4_clear_fcf_rr_bmask(phba);
     }
 
     /* Prepare for LINK up registrations */
     memset(phba->os_host_name, 0, sizeof(phba->os_host_name));
     scnprintf(phba->os_host_name, sizeof(phba->os_host_name), "%s",
           init_utsname()->nodename);
     return;
 out:
     lpfc_vport_set_state(vport, FC_VPORT_FAILED);
     lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
              "0263 Discovery Mailbox error: state: 0x%x : x%px x%px\n",
              vport->port_state, sparam_mbox, cfglink_mbox);
     lpfc_issue_clear_la(phba, vport);
     return;
 }
 
 static void
 lpfc_enable_la(struct lpfc_hba *phba)
 {
     uint32_t control;
     struct lpfc_sli *psli = &phba->sli;
     spin_lock_irq(&phba->hbalock);
     psli->sli_flag |= LPFC_PROCESS_LA;
     if (phba->sli_rev <= LPFC_SLI_REV3) {
         control = readl(phba->HCregaddr);
         control |= HC_LAINT_ENA;
         writel(control, phba->HCregaddr);
         readl(phba->HCregaddr); /* flush */
     }
     spin_unlock_irq(&phba->hbalock);
 }
 
 static void
 lpfc_mbx_issue_link_down(struct lpfc_hba *phba)
 {
     lpfc_linkdown(phba);
     lpfc_enable_la(phba);
     lpfc_unregister_unused_fcf(phba);
     /* turn on Link Attention interrupts - no CLEAR_LA needed */
 }
 
 
 /*
  * This routine handles processing a READ_TOPOLOGY mailbox
  * command upon completion. It is setup in the LPFC_MBOXQ
  * as the completion routine when the command is
  * handed off to the SLI layer. SLI4 only.
  */
 void
 lpfc_mbx_cmpl_read_topology(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_mbx_read_top *la;
     struct lpfc_sli_ring *pring;
     MAILBOX_t *mb = &pmb->u.mb;
     struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *)(pmb->ctx_buf);
     uint8_t attn_type;
     unsigned long iflags;
 
     /* Unblock ELS traffic */
     pring = lpfc_phba_elsring(phba);
     if (pring)
         pring->flag &= ~LPFC_STOP_IOCB_EVENT;
 
     /* Check for error */
     if (mb->mbxStatus) {
         lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT,
                 "1307 READ_LA mbox error x%x state x%x\n",
                 mb->mbxStatus, vport->port_state);
         lpfc_mbx_issue_link_down(phba);
         phba->link_state = LPFC_HBA_ERROR;
         goto lpfc_mbx_cmpl_read_topology_free_mbuf;
     }
 
     la = (struct lpfc_mbx_read_top *) &pmb->u.mb.un.varReadTop;
     attn_type = bf_get(lpfc_mbx_read_top_att_type, la);
 
     memcpy(&phba->alpa_map[0], mp->virt, 128);
 
     spin_lock_irqsave(shost->host_lock, iflags);
     if (bf_get(lpfc_mbx_read_top_pb, la))
         vport->fc_flag |= FC_BYPASSED_MODE;
     else
         vport->fc_flag &= ~FC_BYPASSED_MODE;
     spin_unlock_irqrestore(shost->host_lock, iflags);
 
     if (phba->fc_eventTag <= la->eventTag) {
         phba->fc_stat.LinkMultiEvent++;
         if (attn_type == LPFC_ATT_LINK_UP)
             if (phba->fc_eventTag != 0)
                 lpfc_linkdown(phba);
     }
 
     phba->fc_eventTag = la->eventTag;
     phba->link_events++;
     if (attn_type == LPFC_ATT_LINK_UP) {
         phba->fc_stat.LinkUp++;
         if (phba->link_flag & LS_LOOPBACK_MODE) {
             lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
                     "1306 Link Up Event in loop back mode "
                     "x%x received Data: x%x x%x x%x x%x\n",
                     la->eventTag, phba->fc_eventTag,
                     bf_get(lpfc_mbx_read_top_alpa_granted,
                            la),
                     bf_get(lpfc_mbx_read_top_link_spd, la),
                     phba->alpa_map[0]);
         } else {
             lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
                     "1303 Link Up Event x%x received "
                     "Data: x%x x%x x%x x%x x%x\n",
                     la->eventTag, phba->fc_eventTag,
                     bf_get(lpfc_mbx_read_top_alpa_granted,
                            la),
                     bf_get(lpfc_mbx_read_top_link_spd, la),
                     phba->alpa_map[0],
                     bf_get(lpfc_mbx_read_top_fa, la));
         }
         lpfc_mbx_process_link_up(phba, la);
 
         if (phba->cmf_active_mode != LPFC_CFG_OFF)
             lpfc_cmf_signal_init(phba);
 
     } else if (attn_type == LPFC_ATT_LINK_DOWN ||
            attn_type == LPFC_ATT_UNEXP_WWPN) {
         phba->fc_stat.LinkDown++;
         if (phba->link_flag & LS_LOOPBACK_MODE)
             lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
                 "1308 Link Down Event in loop back mode "
                 "x%x received "
                 "Data: x%x x%x x%x\n",
                 la->eventTag, phba->fc_eventTag,
                 phba->pport->port_state, vport->fc_flag);
         else if (attn_type == LPFC_ATT_UNEXP_WWPN)
             lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
                 "1313 Link Down Unexpected FA WWPN Event x%x "
                 "received Data: x%x x%x x%x x%x\n",
                 la->eventTag, phba->fc_eventTag,
                 phba->pport->port_state, vport->fc_flag,
                 bf_get(lpfc_mbx_read_top_fa, la));
         else
             lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
                 "1305 Link Down Event x%x received "
                 "Data: x%x x%x x%x x%x\n",
                 la->eventTag, phba->fc_eventTag,
                 phba->pport->port_state, vport->fc_flag,
                 bf_get(lpfc_mbx_read_top_fa, la));
         lpfc_mbx_issue_link_down(phba);
     }
 
     if ((phba->sli_rev < LPFC_SLI_REV4) &&
         bf_get(lpfc_mbx_read_top_fa, la))
         lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT,
                 "1311 fa %d\n",
                 bf_get(lpfc_mbx_read_top_fa, la));
 
 lpfc_mbx_cmpl_read_topology_free_mbuf:
     lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED);
 }
 
 /*
  * This routine handles processing a REG_LOGIN mailbox
  * command upon completion. It is setup in the LPFC_MBOXQ
  * as the completion routine when the command is
  * handed off to the SLI layer.
  */
 void
 lpfc_mbx_cmpl_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
 {
     struct lpfc_vport  *vport = pmb->vport;
     struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *)pmb->ctx_buf;
     struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *)pmb->ctx_ndlp;
 
     /* The driver calls the state machine with the pmb pointer
      * but wants to make sure a stale ctx_buf isn't acted on.
      * The ctx_buf is restored later and cleaned up.
      */
     pmb->ctx_buf = NULL;
     pmb->ctx_ndlp = NULL;
 
     lpfc_printf_vlog(vport, KERN_INFO, LOG_SLI | LOG_NODE | LOG_DISCOVERY,
              "0002 rpi:%x DID:%x flg:%x %d x%px\n",
              ndlp->nlp_rpi, ndlp->nlp_DID, ndlp->nlp_flag,
              kref_read(&ndlp->kref),
              ndlp);
     if (ndlp->nlp_flag & NLP_REG_LOGIN_SEND)
         ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND;
 
     if (ndlp->nlp_flag & NLP_IGNR_REG_CMPL ||
         ndlp->nlp_state != NLP_STE_REG_LOGIN_ISSUE) {
         /* We rcvd a rscn after issuing this
          * mbox reg login, we may have cycled
          * back through the state and be
          * back at reg login state so this
          * mbox needs to be ignored becase
          * there is another reg login in
          * process.
          */
         spin_lock_irq(&ndlp->lock);
         ndlp->nlp_flag &= ~NLP_IGNR_REG_CMPL;
         spin_unlock_irq(&ndlp->lock);
 
         /*
          * We cannot leave the RPI registered because
          * if we go thru discovery again for this ndlp
          * a subsequent REG_RPI will fail.
          */
         ndlp->nlp_flag |= NLP_RPI_REGISTERED;
         lpfc_unreg_rpi(vport, ndlp);
     }
 
     /* Call state machine */
     lpfc_disc_state_machine(vport, ndlp, pmb, NLP_EVT_CMPL_REG_LOGIN);
     pmb->ctx_buf = mp;
     lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED);
 
     /* decrement the node reference count held for this callback
      * function.
      */
     lpfc_nlp_put(ndlp);
 
     return;
 }
 
 static void
 lpfc_mbx_cmpl_unreg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
 {
     MAILBOX_t *mb = &pmb->u.mb;
     struct lpfc_vport *vport = pmb->vport;
     struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
 
     switch (mb->mbxStatus) {
     case 0x0011:
     case 0x0020:
         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
                  "0911 cmpl_unreg_vpi, mb status = 0x%x\n",
                  mb->mbxStatus);
         break;
     /* If VPI is busy, reset the HBA */
     case 0x9700:
         lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
             "2798 Unreg_vpi failed vpi 0x%x, mb status = 0x%x\n",
             vport->vpi, mb->mbxStatus);
         if (!(phba->pport->load_flag & FC_UNLOADING))
             lpfc_workq_post_event(phba, NULL, NULL,
                 LPFC_EVT_RESET_HBA);
     }
     spin_lock_irq(shost->host_lock);
     vport->vpi_state &= ~LPFC_VPI_REGISTERED;
     vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
     spin_unlock_irq(shost->host_lock);
     mempool_free(pmb, phba->mbox_mem_pool);
     lpfc_cleanup_vports_rrqs(vport, NULL);
     /*
      * This shost reference might have been taken at the beginning of
      * lpfc_vport_delete()
      */
     if ((vport->load_flag & FC_UNLOADING) && (vport != phba->pport))
         scsi_host_put(shost);
 }
 
 int
 lpfc_mbx_unreg_vpi(struct lpfc_vport *vport)
 {
     struct lpfc_hba  *phba = vport->phba;
     LPFC_MBOXQ_t *mbox;
     int rc;
 
     mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
     if (!mbox)
         return 1;
 
     lpfc_unreg_vpi(phba, vport->vpi, mbox);
     mbox->vport = vport;
     mbox->mbox_cmpl = lpfc_mbx_cmpl_unreg_vpi;
     rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
     if (rc == MBX_NOT_FINISHED) {
         lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
                  "1800 Could not issue unreg_vpi\n");
         mempool_free(mbox, phba->mbox_mem_pool);
         return rc;
     }
     return 0;
 }
 
 static void
 lpfc_mbx_cmpl_reg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
 {
     struct lpfc_vport *vport = pmb->vport;
     struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
     MAILBOX_t *mb = &pmb->u.mb;
 
     switch (mb->mbxStatus) {
     case 0x0011:
     case 0x9601:
     case 0x9602:
         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
                  "0912 cmpl_reg_vpi, mb status = 0x%x\n",
                  mb->mbxStatus);
         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);
         vport->fc_myDID = 0;
 
         if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) ||
             (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME)) {
             if (phba->nvmet_support)
                 lpfc_nvmet_update_targetport(phba);
             else
                 lpfc_nvme_update_localport(vport);
         }
         goto out;
     }
 
     spin_lock_irq(shost->host_lock);
     vport->vpi_state |= LPFC_VPI_REGISTERED;
     vport->fc_flag &= ~FC_VPORT_NEEDS_REG_VPI;
     spin_unlock_irq(shost->host_lock);
     vport->num_disc_nodes = 0;
     /* go thru NPR list and 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);
     }
     vport->port_state = LPFC_VPORT_READY;
 
 out:
     mempool_free(pmb, phba->mbox_mem_pool);
     return;
 }
 
 /**
  * lpfc_create_static_vport - Read HBA config region to create static vports.
  * @phba: pointer to lpfc hba data structure.
  *
  * This routine issue a DUMP mailbox command for config region 22 to get
  * the list of static vports to be created. The function create vports
  * based on the information returned from the HBA.
  **/
 void
 lpfc_create_static_vport(struct lpfc_hba *phba)
 {
     LPFC_MBOXQ_t *pmb = NULL;
     MAILBOX_t *mb;
     struct static_vport_info *vport_info;
     int mbx_wait_rc = 0, i;
     struct fc_vport_identifiers vport_id;
     struct fc_vport *new_fc_vport;
     struct Scsi_Host *shost;
     struct lpfc_vport *vport;
     uint16_t offset = 0;
     uint8_t *vport_buff;
     struct lpfc_dmabuf *mp;
     uint32_t byte_count = 0;
 
     pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
     if (!pmb) {
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "0542 lpfc_create_static_vport failed to"
                 " allocate mailbox memory\n");
         return;
     }
     memset(pmb, 0, sizeof(LPFC_MBOXQ_t));
     mb = &pmb->u.mb;
 
     vport_info = kzalloc(sizeof(struct static_vport_info), GFP_KERNEL);
     if (!vport_info) {
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "0543 lpfc_create_static_vport failed to"
                 " allocate vport_info\n");
         mempool_free(pmb, phba->mbox_mem_pool);
         return;
     }
 
     vport_buff = (uint8_t *) vport_info;
     do {
         /* While loop iteration forces a free dma buffer from
          * the previous loop because the mbox is reused and
          * the dump routine is a single-use construct.
          */
         if (pmb->ctx_buf) {
             mp = (struct lpfc_dmabuf *)pmb->ctx_buf;
             lpfc_mbuf_free(phba, mp->virt, mp->phys);
             kfree(mp);
             pmb->ctx_buf = NULL;
         }
         if (lpfc_dump_static_vport(phba, pmb, offset))
             goto out;
 
         pmb->vport = phba->pport;
         mbx_wait_rc = lpfc_sli_issue_mbox_wait(phba, pmb,
                             LPFC_MBOX_TMO);
 
         if ((mbx_wait_rc != MBX_SUCCESS) || mb->mbxStatus) {
             lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
                 "0544 lpfc_create_static_vport failed to"
                 " issue dump mailbox command ret 0x%x "
                 "status 0x%x\n",
                 mbx_wait_rc, mb->mbxStatus);
             goto out;
         }
 
         if (phba->sli_rev == LPFC_SLI_REV4) {
             byte_count = pmb->u.mqe.un.mb_words[5];
             mp = (struct lpfc_dmabuf *)pmb->ctx_buf;
             if (byte_count > sizeof(struct static_vport_info) -
                     offset)
                 byte_count = sizeof(struct static_vport_info)
                     - offset;
             memcpy(vport_buff + offset, mp->virt, byte_count);
             offset += byte_count;
         } else {
             if (mb->un.varDmp.word_cnt >
                 sizeof(struct static_vport_info) - offset)
                 mb->un.varDmp.word_cnt =
                     sizeof(struct static_vport_info)
                         - offset;
             byte_count = mb->un.varDmp.word_cnt;
             lpfc_sli_pcimem_bcopy(((uint8_t *)mb) + DMP_RSP_OFFSET,
                 vport_buff + offset,
                 byte_count);
 
             offset += byte_count;
         }
 
     } while (byte_count &&
         offset < sizeof(struct static_vport_info));
 
 
     if ((le32_to_cpu(vport_info->signature) != VPORT_INFO_SIG) ||
         ((le32_to_cpu(vport_info->rev) & VPORT_INFO_REV_MASK)
             != VPORT_INFO_REV)) {
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "0545 lpfc_create_static_vport bad"
                 " information header 0x%x 0x%x\n",
                 le32_to_cpu(vport_info->signature),
                 le32_to_cpu(vport_info->rev) &
                 VPORT_INFO_REV_MASK);
 
         goto out;
     }
 
     shost = lpfc_shost_from_vport(phba->pport);
 
     for (i = 0; i < MAX_STATIC_VPORT_COUNT; i++) {
         memset(&vport_id, 0, sizeof(vport_id));
         vport_id.port_name = wwn_to_u64(vport_info->vport_list[i].wwpn);
         vport_id.node_name = wwn_to_u64(vport_info->vport_list[i].wwnn);
         if (!vport_id.port_name || !vport_id.node_name)
             continue;
 
         vport_id.roles = FC_PORT_ROLE_FCP_INITIATOR;
         vport_id.vport_type = FC_PORTTYPE_NPIV;
         vport_id.disable = false;
         new_fc_vport = fc_vport_create(shost, 0, &vport_id);
 
         if (!new_fc_vport) {
             lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
                 "0546 lpfc_create_static_vport failed to"
                 " create vport\n");
             continue;
         }
 
         vport = *(struct lpfc_vport **)new_fc_vport->dd_data;
         vport->vport_flag |= STATIC_VPORT;
     }
 
 out:
     kfree(vport_info);
     if (mbx_wait_rc != MBX_TIMEOUT)
         lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED);
 }
 
 /*
  * This routine handles processing a Fabric REG_LOGIN mailbox
  * command upon completion. It is setup in the LPFC_MBOXQ
  * as the completion routine when the command is
  * handed off to the SLI layer.
  */
 void
 lpfc_mbx_cmpl_fabric_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
 {
     struct lpfc_vport *vport = pmb->vport;
     MAILBOX_t *mb = &pmb->u.mb;
     struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *)pmb->ctx_ndlp;
     struct Scsi_Host *shost;
 
     pmb->ctx_ndlp = NULL;
 
     if (mb->mbxStatus) {
         lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
                  "0258 Register Fabric login error: 0x%x\n",
                  mb->mbxStatus);
         lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED);
         if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
             /* FLOGI failed, use loop map to make discovery list */
             lpfc_disc_list_loopmap(vport);
 
             /* Start discovery */
             lpfc_disc_start(vport);
             /* Decrement the reference count to ndlp after the
              * reference to the ndlp are done.
              */
             lpfc_nlp_put(ndlp);
             return;
         }
 
         lpfc_vport_set_state(vport, FC_VPORT_FAILED);
         /* Decrement the reference count to ndlp after the reference
          * to the ndlp are done.
          */
         lpfc_nlp_put(ndlp);
         return;
     }
 
     if (phba->sli_rev < LPFC_SLI_REV4)
         ndlp->nlp_rpi = mb->un.varWords[0];
     ndlp->nlp_flag |= NLP_RPI_REGISTERED;
     ndlp->nlp_type |= NLP_FABRIC;
     lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
 
     if (vport->port_state == LPFC_FABRIC_CFG_LINK) {
         /* when physical port receive logo donot start
          * vport discovery */
         if (!(vport->fc_flag & FC_LOGO_RCVD_DID_CHNG))
             lpfc_start_fdiscs(phba);
         else {
             shost = lpfc_shost_from_vport(vport);
             spin_lock_irq(shost->host_lock);
             vport->fc_flag &= ~FC_LOGO_RCVD_DID_CHNG ;
             spin_unlock_irq(shost->host_lock);
         }
         lpfc_do_scr_ns_plogi(phba, vport);
     }
 
     lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED);
 
     /* Drop the reference count from the mbox at the end after
      * all the current reference to the ndlp have been done.
      */
     lpfc_nlp_put(ndlp);
     return;
 }
 
  /*
   * This routine will issue a GID_FT for each FC4 Type supported
   * by the driver. ALL GID_FTs must complete before discovery is started.
   */
 int
 lpfc_issue_gidft(struct lpfc_vport *vport)
 {
     /* Good status, issue CT Request to NameServer */
     if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) ||
         (vport->cfg_enable_fc4_type == LPFC_ENABLE_FCP)) {
         if (lpfc_ns_cmd(vport, SLI_CTNS_GID_FT, 0, SLI_CTPT_FCP)) {
             /* Cannot issue NameServer FCP Query, so finish up
              * discovery
              */
             lpfc_printf_vlog(vport, KERN_ERR,
                      LOG_TRACE_EVENT,
                      "0604 %s FC TYPE %x %s\n",
                      "Failed to issue GID_FT to ",
                      FC_TYPE_FCP,
                      "Finishing discovery.");
             return 0;
         }
         vport->gidft_inp++;
     }
 
     if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) ||
         (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME)) {
         if (lpfc_ns_cmd(vport, SLI_CTNS_GID_FT, 0, SLI_CTPT_NVME)) {
             /* Cannot issue NameServer NVME Query, so finish up
              * discovery
              */
             lpfc_printf_vlog(vport, KERN_ERR,
                      LOG_TRACE_EVENT,
                      "0605 %s FC_TYPE %x %s %d\n",
                      "Failed to issue GID_FT to ",
                      FC_TYPE_NVME,
                      "Finishing discovery: gidftinp ",
                      vport->gidft_inp);
             if (vport->gidft_inp == 0)
                 return 0;
         } else
             vport->gidft_inp++;
     }
     return vport->gidft_inp;
 }
 
 /**
  * lpfc_issue_gidpt - issue a GID_PT for all N_Ports
  * @vport: The virtual port for which this call is being executed.
  *
  * This routine will issue a GID_PT to get a list of all N_Ports
  *
  * Return value :
  *   0 - Failure to issue a GID_PT
  *   1 - GID_PT issued
  **/
 int
 lpfc_issue_gidpt(struct lpfc_vport *vport)
 {
     /* Good status, issue CT Request to NameServer */
     if (lpfc_ns_cmd(vport, SLI_CTNS_GID_PT, 0, GID_PT_N_PORT)) {
         /* Cannot issue NameServer FCP Query, so finish up
          * discovery
          */
         lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
                  "0606 %s Port TYPE %x %s\n",
                  "Failed to issue GID_PT to ",
                  GID_PT_N_PORT,
                  "Finishing discovery.");
         return 0;
     }
     vport->gidft_inp++;
     return 1;
 }
 
 /*
  * This routine handles processing a NameServer REG_LOGIN mailbox
  * command upon completion. It is setup in the LPFC_MBOXQ
  * as the completion routine when the command is
  * handed off to the SLI layer.
  */
 void
 lpfc_mbx_cmpl_ns_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
 {
     MAILBOX_t *mb = &pmb->u.mb;
     struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *)pmb->ctx_ndlp;
     struct lpfc_vport *vport = pmb->vport;
     int rc;
 
     pmb->ctx_ndlp = NULL;
     vport->gidft_inp = 0;
 
     if (mb->mbxStatus) {
         lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
                  "0260 Register NameServer error: 0x%x\n",
                  mb->mbxStatus);
 
 out:
         /* decrement the node reference count held for this
          * callback function.
          */
         lpfc_nlp_put(ndlp);
         lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED);
 
         /* If the node is not registered with the scsi or nvme
          * transport, remove the fabric node.  The failed reg_login
          * is terminal.
          */
         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_nlp_not_used(ndlp);
         }
 
         if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
             /*
              * RegLogin failed, use loop map to make discovery
              * list
              */
             lpfc_disc_list_loopmap(vport);
 
             /* Start discovery */
             lpfc_disc_start(vport);
             return;
         }
         lpfc_vport_set_state(vport, FC_VPORT_FAILED);
         return;
     }
 
     if (phba->sli_rev < LPFC_SLI_REV4)
         ndlp->nlp_rpi = mb->un.varWords[0];
     ndlp->nlp_flag |= NLP_RPI_REGISTERED;
     ndlp->nlp_type |= NLP_FABRIC;
     lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
     lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE | LOG_DISCOVERY,
              "0003 rpi:%x DID:%x flg:%x %d x%px\n",
              ndlp->nlp_rpi, ndlp->nlp_DID, ndlp->nlp_flag,
              kref_read(&ndlp->kref),
              ndlp);
 
     if (vport->port_state < LPFC_VPORT_READY) {
         /* Link up discovery requires Fabric registration. */
         lpfc_ns_cmd(vport, SLI_CTNS_RNN_ID, 0, 0);
         lpfc_ns_cmd(vport, SLI_CTNS_RSNN_NN, 0, 0);
         lpfc_ns_cmd(vport, SLI_CTNS_RSPN_ID, 0, 0);
         lpfc_ns_cmd(vport, SLI_CTNS_RFT_ID, 0, 0);
 
         if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) ||
             (vport->cfg_enable_fc4_type == LPFC_ENABLE_FCP))
             lpfc_ns_cmd(vport, SLI_CTNS_RFF_ID, 0, FC_TYPE_FCP);
 
         if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) ||
             (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME))
             lpfc_ns_cmd(vport, SLI_CTNS_RFF_ID, 0,
                     FC_TYPE_NVME);
 
         /* Issue SCR just before NameServer GID_FT Query */
         lpfc_issue_els_scr(vport, 0);
 
         /* Link was bounced or a Fabric LOGO occurred.  Start EDC
          * with initial FW values provided the congestion mode is
          * not off.  Note that signals may or may not be supported
          * by the adapter but FPIN is provided by default for 1
          * or both missing signals support.
          */
         if (phba->cmf_active_mode != LPFC_CFG_OFF) {
             phba->cgn_reg_fpin = phba->cgn_init_reg_fpin;
             phba->cgn_reg_signal = phba->cgn_init_reg_signal;
             rc = lpfc_issue_els_edc(vport, 0);
             lpfc_printf_log(phba, KERN_INFO,
                     LOG_INIT | LOG_ELS | LOG_DISCOVERY,
                     "4220 EDC issue error x%x, Data: x%x\n",
                     rc, phba->cgn_init_reg_signal);
         } else {
             lpfc_issue_els_rdf(vport, 0);
         }
     }
 
     vport->fc_ns_retry = 0;
     if (lpfc_issue_gidft(vport) == 0)
         goto out;
 
     /*
      * At this point in time we may need to wait for multiple
      * SLI_CTNS_GID_FT CT commands to complete before we start discovery.
      *
      * decrement the node reference count held for this
      * callback function.
      */
     lpfc_nlp_put(ndlp);
     lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED);
     return;
 }
 
 /*
  * This routine handles processing a Fabric Controller REG_LOGIN mailbox
  * command upon completion. It is setup in the LPFC_MBOXQ
  * as the completion routine when the command is handed off to the SLI layer.
  */
 void
 lpfc_mbx_cmpl_fc_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
 {
     struct lpfc_vport *vport = pmb->vport;
     MAILBOX_t *mb = &pmb->u.mb;
     struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *)pmb->ctx_ndlp;
 
     pmb->ctx_ndlp = NULL;
     if (mb->mbxStatus) {
         lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
                  "0933 %s: Register FC login error: 0x%x\n",
                  __func__, mb->mbxStatus);
         goto out;
     }
 
     lpfc_check_nlp_post_devloss(vport, ndlp);
 
     if (phba->sli_rev < LPFC_SLI_REV4)
         ndlp->nlp_rpi = mb->un.varWords[0];
 
     lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
              "0934 %s: Complete FC x%x RegLogin rpi x%x ste x%x\n",
              __func__, ndlp->nlp_DID, ndlp->nlp_rpi,
              ndlp->nlp_state);
 
     ndlp->nlp_flag |= NLP_RPI_REGISTERED;
     ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND;
     ndlp->nlp_type |= NLP_FABRIC;
     lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
 
  out:
     lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED);
 
     /* Drop the reference count from the mbox at the end after
      * all the current reference to the ndlp have been done.
      */
     lpfc_nlp_put(ndlp);
 }
 
 static void
 lpfc_register_remote_port(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
 {
     struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
     struct fc_rport  *rport;
     struct lpfc_rport_data *rdata;
     struct fc_rport_identifiers rport_ids;
     struct lpfc_hba  *phba = vport->phba;
     unsigned long flags;
 
     if (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME)
         return;
 
     /* Remote port has reappeared. Re-register w/ FC transport */
     rport_ids.node_name = wwn_to_u64(ndlp->nlp_nodename.u.wwn);
     rport_ids.port_name = wwn_to_u64(ndlp->nlp_portname.u.wwn);
     rport_ids.port_id = ndlp->nlp_DID;
     rport_ids.roles = FC_RPORT_ROLE_UNKNOWN;
 
 
     lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
                   "rport add:       did:x%x flg:x%x type x%x",
                   ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
 
     /* Don't add the remote port if unloading. */
     if (vport->load_flag & FC_UNLOADING)
         return;
 
     /*
      * Disassociate any older association between this ndlp and rport
      */
     if (ndlp->rport) {
         rdata = ndlp->rport->dd_data;
         rdata->pnode = NULL;
     }
 
     ndlp->rport = rport = fc_remote_port_add(shost, 0, &rport_ids);
     if (!rport) {
         dev_printk(KERN_WARNING, &phba->pcidev->dev,
                "Warning: fc_remote_port_add failed\n");
         return;
     }
 
     /* Successful port add.  Complete initializing node data */
     rport->maxframe_size = ndlp->nlp_maxframe;
     rport->supported_classes = ndlp->nlp_class_sup;
     rdata = rport->dd_data;
     rdata->pnode = lpfc_nlp_get(ndlp);
     if (!rdata->pnode) {
         dev_warn(&phba->pcidev->dev,
              "Warning - node ref failed. Unreg rport\n");
         fc_remote_port_delete(rport);
         ndlp->rport = NULL;
         return;
     }
 
     spin_lock_irqsave(&ndlp->lock, flags);
     ndlp->fc4_xpt_flags |= SCSI_XPT_REGD;
     spin_unlock_irqrestore(&ndlp->lock, flags);
 
     if (ndlp->nlp_type & NLP_FCP_TARGET)
         rport_ids.roles |= FC_PORT_ROLE_FCP_TARGET;
     if (ndlp->nlp_type & NLP_FCP_INITIATOR)
         rport_ids.roles |= FC_PORT_ROLE_FCP_INITIATOR;
     if (ndlp->nlp_type & NLP_NVME_INITIATOR)
         rport_ids.roles |= FC_PORT_ROLE_NVME_INITIATOR;
     if (ndlp->nlp_type & NLP_NVME_TARGET)
         rport_ids.roles |= FC_PORT_ROLE_NVME_TARGET;
     if (ndlp->nlp_type & NLP_NVME_DISCOVERY)
         rport_ids.roles |= FC_PORT_ROLE_NVME_DISCOVERY;
 
     if (rport_ids.roles !=  FC_RPORT_ROLE_UNKNOWN)
         fc_remote_port_rolechg(rport, rport_ids.roles);
 
     lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE,
              "3183 %s rport x%px DID x%x, role x%x refcnt %d\n",
              __func__, rport, rport->port_id, rport->roles,
              kref_read(&ndlp->kref));
 
     if ((rport->scsi_target_id != -1) &&
         (rport->scsi_target_id < LPFC_MAX_TARGET)) {
         ndlp->nlp_sid = rport->scsi_target_id;
     }
 
     return;
 }
 
 static void
 lpfc_unregister_remote_port(struct lpfc_nodelist *ndlp)
 {
     struct fc_rport *rport = ndlp->rport;
     struct lpfc_vport *vport = ndlp->vport;
 
     if (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME)
         return;
 
     lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
         "rport delete:    did:x%x flg:x%x type x%x",
         ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
 
     lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
              "3184 rport unregister x%06x, rport x%px "
              "xptflg x%x refcnt %d\n",
              ndlp->nlp_DID, rport, ndlp->fc4_xpt_flags,
              kref_read(&ndlp->kref));
 
     fc_remote_port_delete(rport);
     lpfc_nlp_put(ndlp);
 }
 
 static void
 lpfc_nlp_counters(struct lpfc_vport *vport, int state, int count)
 {
     struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
     unsigned long iflags;
 
     spin_lock_irqsave(shost->host_lock, iflags);
     switch (state) {
     case NLP_STE_UNUSED_NODE:
         vport->fc_unused_cnt += count;
         break;
     case NLP_STE_PLOGI_ISSUE:
         vport->fc_plogi_cnt += count;
         break;
     case NLP_STE_ADISC_ISSUE:
         vport->fc_adisc_cnt += count;
         break;
     case NLP_STE_REG_LOGIN_ISSUE:
         vport->fc_reglogin_cnt += count;
         break;
     case NLP_STE_PRLI_ISSUE:
         vport->fc_prli_cnt += count;
         break;
     case NLP_STE_UNMAPPED_NODE:
         vport->fc_unmap_cnt += count;
         break;
     case NLP_STE_MAPPED_NODE:
         vport->fc_map_cnt += count;
         break;
     case NLP_STE_NPR_NODE:
         if (vport->fc_npr_cnt == 0 && count == -1)
             vport->fc_npr_cnt = 0;
         else
             vport->fc_npr_cnt += count;
         break;
     }
     spin_unlock_irqrestore(shost->host_lock, iflags);
 }
 
 /* Register a node with backend if not already done */
 void
 lpfc_nlp_reg_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
 {
     unsigned long iflags;
 
     lpfc_check_nlp_post_devloss(vport, ndlp);
 
     spin_lock_irqsave(&ndlp->lock, iflags);
     if (ndlp->fc4_xpt_flags & NLP_XPT_REGD) {
         /* Already registered with backend, trigger rescan */
         spin_unlock_irqrestore(&ndlp->lock, iflags);
 
         if (ndlp->fc4_xpt_flags & NVME_XPT_REGD &&
             ndlp->nlp_type & (NLP_NVME_TARGET | NLP_NVME_DISCOVERY)) {
             lpfc_nvme_rescan_port(vport, ndlp);
         }
         return;
     }
 
     ndlp->fc4_xpt_flags |= NLP_XPT_REGD;
     spin_unlock_irqrestore(&ndlp->lock, iflags);
 
     if (lpfc_valid_xpt_node(ndlp)) {
         vport->phba->nport_event_cnt++;
         /*
          * Tell the fc transport about the port, if we haven't
          * already. If we have, and it's a scsi entity, be
          */
         lpfc_register_remote_port(vport, ndlp);
     }
 
     /* We are done if we do not have any NVME remote node */
     if (!(ndlp->nlp_fc4_type & NLP_FC4_NVME))
         return;
 
     /* Notify the NVME transport of this new rport. */
     if (vport->phba->sli_rev >= LPFC_SLI_REV4 &&
             ndlp->nlp_fc4_type & NLP_FC4_NVME) {
         if (vport->phba->nvmet_support == 0) {
             /* Register this rport with the transport.
              * Only NVME Target Rports are registered with
              * the transport.
              */
             if (ndlp->nlp_type & NLP_NVME_TARGET) {
                 vport->phba->nport_event_cnt++;
                 lpfc_nvme_register_port(vport, ndlp);
             }
         } else {
             /* Just take an NDLP ref count since the
              * target does not register rports.
              */
             lpfc_nlp_get(ndlp);
         }
     }
 }
 
 /* Unregister a node with backend if not already done */
 void
 lpfc_nlp_unreg_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
 {
     unsigned long iflags;
 
     spin_lock_irqsave(&ndlp->lock, iflags);
     if (!(ndlp->fc4_xpt_flags & NLP_XPT_REGD)) {
         spin_unlock_irqrestore(&ndlp->lock, iflags);
         lpfc_printf_vlog(vport, KERN_INFO, LOG_SLI,
                  "0999 %s Not regd: ndlp x%px rport x%px DID "
                  "x%x FLG x%x XPT x%x\n",
                   __func__, ndlp, ndlp->rport, ndlp->nlp_DID,
                   ndlp->nlp_flag, ndlp->fc4_xpt_flags);
         return;
     }
 
     ndlp->fc4_xpt_flags &= ~NLP_XPT_REGD;
     spin_unlock_irqrestore(&ndlp->lock, iflags);
 
     if (ndlp->rport &&
         ndlp->fc4_xpt_flags & SCSI_XPT_REGD) {
         vport->phba->nport_event_cnt++;
         lpfc_unregister_remote_port(ndlp);
     } else if (!ndlp->rport) {
         lpfc_printf_vlog(vport, KERN_INFO, LOG_SLI,
                  "1999 %s NDLP in devloss x%px DID x%x FLG x%x"
                  " XPT x%x refcnt %d\n",
                  __func__, ndlp, ndlp->nlp_DID, ndlp->nlp_flag,
                  ndlp->fc4_xpt_flags,
                  kref_read(&ndlp->kref));
     }
 
     if (ndlp->fc4_xpt_flags & NVME_XPT_REGD) {
         vport->phba->nport_event_cnt++;
         if (vport->phba->nvmet_support == 0) {
             /* Start devloss if target. */
             if (ndlp->nlp_type & NLP_NVME_TARGET)
                 lpfc_nvme_unregister_port(vport, ndlp);
         } else {
             /* NVMET has no upcall. */
             lpfc_nlp_put(ndlp);
         }
     }
 
 }
 
 /*
  * Adisc state change handling
  */
 static void
 lpfc_handle_adisc_state(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
         int new_state)
 {
     switch (new_state) {
     /*
      * Any state to ADISC_ISSUE
      * Do nothing, adisc cmpl handling will trigger state changes
      */
     case NLP_STE_ADISC_ISSUE:
         break;
 
     /*
      * ADISC_ISSUE to mapped states
      * Trigger a registration with backend, it will be nop if
      * already registered
      */
     case NLP_STE_UNMAPPED_NODE:
         ndlp->nlp_type |= NLP_FC_NODE;
         fallthrough;
     case NLP_STE_MAPPED_NODE:
         ndlp->nlp_flag &= ~NLP_NODEV_REMOVE;
         lpfc_nlp_reg_node(vport, ndlp);
         break;
 
     /*
      * ADISC_ISSUE to non-mapped states
      * We are moving from ADISC_ISSUE to a non-mapped state because
      * ADISC failed, we would have skipped unregistering with
      * backend, attempt it now
      */
     case NLP_STE_NPR_NODE:
         ndlp->nlp_flag &= ~NLP_RCV_PLOGI;
         fallthrough;
     default:
         lpfc_nlp_unreg_node(vport, ndlp);
         break;
     }
 
 }
 
 static void
 lpfc_nlp_state_cleanup(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
                int old_state, int new_state)
 {
     /* Trap ADISC changes here */
     if (new_state == NLP_STE_ADISC_ISSUE ||
         old_state == NLP_STE_ADISC_ISSUE) {
         lpfc_handle_adisc_state(vport, ndlp, new_state);
         return;
     }
 
     if (new_state == NLP_STE_UNMAPPED_NODE) {
         ndlp->nlp_flag &= ~NLP_NODEV_REMOVE;
         ndlp->nlp_type |= NLP_FC_NODE;
     }
     if (new_state == NLP_STE_MAPPED_NODE)
         ndlp->nlp_flag &= ~NLP_NODEV_REMOVE;
     if (new_state == NLP_STE_NPR_NODE)
         ndlp->nlp_flag &= ~NLP_RCV_PLOGI;
 
     /* Reg/Unreg for FCP and NVME Transport interface */
     if ((old_state == NLP_STE_MAPPED_NODE ||
          old_state == NLP_STE_UNMAPPED_NODE)) {
         /* For nodes marked for ADISC, Handle unreg in ADISC cmpl
          * if linkup. In linkdown do unreg_node
          */
         if (!(ndlp->nlp_flag & NLP_NPR_ADISC) ||
             !lpfc_is_link_up(vport->phba))
             lpfc_nlp_unreg_node(vport, ndlp);
     }
 
     if (new_state ==  NLP_STE_MAPPED_NODE ||
         new_state == NLP_STE_UNMAPPED_NODE)
         lpfc_nlp_reg_node(vport, ndlp);
 
     if ((new_state ==  NLP_STE_MAPPED_NODE) &&
         (vport->stat_data_enabled)) {
         /*
          * A new target is discovered, if there is no buffer for
          * statistical data collection allocate buffer.
          */
         ndlp->lat_data = kcalloc(LPFC_MAX_BUCKET_COUNT,
                      sizeof(struct lpfc_scsicmd_bkt),
                      GFP_KERNEL);
 
         if (!ndlp->lat_data)
             lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
                 "0286 lpfc_nlp_state_cleanup failed to "
                 "allocate statistical data buffer DID "
                 "0x%x\n", ndlp->nlp_DID);
     }
     /*
      * If the node just added to Mapped list was an FCP target,
      * but the remote port registration failed or assigned a target
      * id outside the presentable range - move the node to the
      * Unmapped List.
      */
     if ((new_state == NLP_STE_MAPPED_NODE) &&
         (ndlp->nlp_type & NLP_FCP_TARGET) &&
         (!ndlp->rport ||
          ndlp->rport->scsi_target_id == -1 ||
          ndlp->rport->scsi_target_id >= LPFC_MAX_TARGET)) {
         spin_lock_irq(&ndlp->lock);
         ndlp->nlp_flag |= NLP_TGT_NO_SCSIID;
         spin_unlock_irq(&ndlp->lock);
         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
     }
 }
 
 static char *
 lpfc_nlp_state_name(char *buffer, size_t size, int state)
 {
     static char *states[] = {
         [NLP_STE_UNUSED_NODE] = "UNUSED",
         [NLP_STE_PLOGI_ISSUE] = "PLOGI",
         [NLP_STE_ADISC_ISSUE] = "ADISC",
         [NLP_STE_REG_LOGIN_ISSUE] = "REGLOGIN",
         [NLP_STE_PRLI_ISSUE] = "PRLI",
         [NLP_STE_LOGO_ISSUE] = "LOGO",
         [NLP_STE_UNMAPPED_NODE] = "UNMAPPED",
         [NLP_STE_MAPPED_NODE] = "MAPPED",
         [NLP_STE_NPR_NODE] = "NPR",
     };
 
     if (state < NLP_STE_MAX_STATE && states[state])
         strlcpy(buffer, states[state], size);
     else
         snprintf(buffer, size, "unknown (%d)", state);
     return buffer;
 }
 
 void
 lpfc_nlp_set_state(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
            int state)
 {
     struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
     int  old_state = ndlp->nlp_state;
     int node_dropped = ndlp->nlp_flag & NLP_DROPPED;
     char name1[16], name2[16];
 
     lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
              "0904 NPort state transition x%06x, %s -> %s\n",
              ndlp->nlp_DID,
              lpfc_nlp_state_name(name1, sizeof(name1), old_state),
              lpfc_nlp_state_name(name2, sizeof(name2), state));
 
     lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
         "node statechg    did:x%x old:%d ste:%d",
         ndlp->nlp_DID, old_state, state);
 
     if (node_dropped && old_state == NLP_STE_UNUSED_NODE &&
         state != NLP_STE_UNUSED_NODE) {
         ndlp->nlp_flag &= ~NLP_DROPPED;
         lpfc_nlp_get(ndlp);
     }
 
     if (old_state == NLP_STE_NPR_NODE &&
         state != NLP_STE_NPR_NODE)
         lpfc_cancel_retry_delay_tmo(vport, ndlp);
     if (old_state == NLP_STE_UNMAPPED_NODE) {
         ndlp->nlp_flag &= ~NLP_TGT_NO_SCSIID;
         ndlp->nlp_type &= ~NLP_FC_NODE;
     }
 
     if (list_empty(&ndlp->nlp_listp)) {
         spin_lock_irq(shost->host_lock);
         list_add_tail(&ndlp->nlp_listp, &vport->fc_nodes);
         spin_unlock_irq(shost->host_lock);
     } else if (old_state)
         lpfc_nlp_counters(vport, old_state, -1);
 
     ndlp->nlp_state = state;
     lpfc_nlp_counters(vport, state, 1);
     lpfc_nlp_state_cleanup(vport, ndlp, old_state, state);
 }
 
 void
 lpfc_enqueue_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
 {
     struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
 
     if (list_empty(&ndlp->nlp_listp)) {
         spin_lock_irq(shost->host_lock);
         list_add_tail(&ndlp->nlp_listp, &vport->fc_nodes);
         spin_unlock_irq(shost->host_lock);
     }
 }
 
 void
 lpfc_dequeue_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
 {
     struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
 
     lpfc_cancel_retry_delay_tmo(vport, ndlp);
     if (ndlp->nlp_state && !list_empty(&ndlp->nlp_listp))
         lpfc_nlp_counters(vport, ndlp->nlp_state, -1);
     spin_lock_irq(shost->host_lock);
     list_del_init(&ndlp->nlp_listp);
     spin_unlock_irq(shost->host_lock);
     lpfc_nlp_state_cleanup(vport, ndlp, ndlp->nlp_state,
                 NLP_STE_UNUSED_NODE);
 }
 
 /**
  * lpfc_initialize_node - Initialize all fields of node object
  * @vport: Pointer to Virtual Port object.
  * @ndlp: Pointer to FC node object.
  * @did: FC_ID of the node.
  *
  * This function is always called when node object need to be initialized.
  * It initializes all the fields of the node object. Although the reference
  * to phba from @ndlp can be obtained indirectly through it's reference to
  * @vport, a direct reference to phba is taken here by @ndlp. This is due
  * to the life-span of the @ndlp might go beyond the existence of @vport as
  * the final release of ndlp is determined by its reference count. And, the
  * operation on @ndlp needs the reference to phba.
  **/
 static inline void
 lpfc_initialize_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
     uint32_t did)
 {
     INIT_LIST_HEAD(&ndlp->els_retry_evt.evt_listp);
     INIT_LIST_HEAD(&ndlp->dev_loss_evt.evt_listp);
     timer_setup(&ndlp->nlp_delayfunc, lpfc_els_retry_delay, 0);
     INIT_LIST_HEAD(&ndlp->recovery_evt.evt_listp);
 
     ndlp->nlp_DID = did;
     ndlp->vport = vport;
     ndlp->phba = vport->phba;
     ndlp->nlp_sid = NLP_NO_SID;
     ndlp->nlp_fc4_type = NLP_FC4_NONE;
     kref_init(&ndlp->kref);
     atomic_set(&ndlp->cmd_pending, 0);
     ndlp->cmd_qdepth = vport->cfg_tgt_queue_depth;
     ndlp->nlp_defer_did = NLP_EVT_NOTHING_PENDING;
 }
 
 void
 lpfc_drop_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
 {
     /*
      * Use of lpfc_drop_node and UNUSED list: lpfc_drop_node should
      * be used if we wish to issue the "last" lpfc_nlp_put() to remove
      * the ndlp from the vport. The ndlp marked as UNUSED on the list
      * until ALL other outstanding threads have completed. We check
      * that the ndlp not already in the UNUSED state before we proceed.
      */
     if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
         return;
     lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNUSED_NODE);
     ndlp->nlp_flag |= NLP_DROPPED;
     if (vport->phba->sli_rev == LPFC_SLI_REV4) {
         lpfc_cleanup_vports_rrqs(vport, ndlp);
         lpfc_unreg_rpi(vport, ndlp);
     }
 
     lpfc_nlp_put(ndlp);
     return;
 }
 
 /*
  * Start / ReStart rescue timer for Discovery / RSCN handling
  */
 void
 lpfc_set_disctmo(struct lpfc_vport *vport)
 {
     struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
     struct lpfc_hba  *phba = vport->phba;
     uint32_t tmo;
 
     if (vport->port_state == LPFC_LOCAL_CFG_LINK) {
         /* For FAN, timeout should be greater than edtov */
         tmo = (((phba->fc_edtov + 999) / 1000) + 1);
     } else {
         /* Normal discovery timeout should be > than ELS/CT timeout
          * FC spec states we need 3 * ratov for CT requests
          */
         tmo = ((phba->fc_ratov * 3) + 3);
     }
 
 
     if (!timer_pending(&vport->fc_disctmo)) {
         lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
             "set disc timer:  tmo:x%x state:x%x flg:x%x",
             tmo, vport->port_state, vport->fc_flag);
     }
 
     mod_timer(&vport->fc_disctmo, jiffies + msecs_to_jiffies(1000 * tmo));
     spin_lock_irq(shost->host_lock);
     vport->fc_flag |= FC_DISC_TMO;
     spin_unlock_irq(shost->host_lock);
 
     /* Start Discovery Timer state <hba_state> */
     lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
              "0247 Start Discovery Timer state x%x "
              "Data: x%x x%lx x%x x%x\n",
              vport->port_state, tmo,
              (unsigned long)&vport->fc_disctmo, vport->fc_plogi_cnt,
              vport->fc_adisc_cnt);
 
     return;
 }
 
 /*
  * Cancel rescue timer for Discovery / RSCN handling
  */
 int
 lpfc_can_disctmo(struct lpfc_vport *vport)
 {
     struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
     unsigned long iflags;
 
     lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
         "can disc timer:  state:x%x rtry:x%x flg:x%x",
         vport->port_state, vport->fc_ns_retry, vport->fc_flag);
 
     /* Turn off discovery timer if its running */
     if (vport->fc_flag & FC_DISC_TMO ||
         timer_pending(&vport->fc_disctmo)) {
         spin_lock_irqsave(shost->host_lock, iflags);
         vport->fc_flag &= ~FC_DISC_TMO;
         spin_unlock_irqrestore(shost->host_lock, iflags);
         del_timer_sync(&vport->fc_disctmo);
         spin_lock_irqsave(&vport->work_port_lock, iflags);
         vport->work_port_events &= ~WORKER_DISC_TMO;
         spin_unlock_irqrestore(&vport->work_port_lock, iflags);
     }
 
     /* Cancel Discovery Timer state <hba_state> */
     lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
              "0248 Cancel Discovery Timer state x%x "
              "Data: x%x x%x x%x\n",
              vport->port_state, vport->fc_flag,
              vport->fc_plogi_cnt, vport->fc_adisc_cnt);
     return 0;
 }
 
 /*
  * Check specified ring for outstanding IOCB on the SLI queue
  * Return true if iocb matches the specified nport
  */
 int
 lpfc_check_sli_ndlp(struct lpfc_hba *phba,
             struct lpfc_sli_ring *pring,
             struct lpfc_iocbq *iocb,
             struct lpfc_nodelist *ndlp)
 {
     struct lpfc_vport *vport = ndlp->vport;
     u8 ulp_command;
     u16 ulp_context;
     u32 remote_id;
 
     if (iocb->vport != vport)
         return 0;
 
     ulp_command = get_job_cmnd(phba, iocb);
     ulp_context = get_job_ulpcontext(phba, iocb);
     remote_id = get_job_els_rsp64_did(phba, iocb);
 
     if (pring->ringno == LPFC_ELS_RING) {
         switch (ulp_command) {
         case CMD_GEN_REQUEST64_CR:
             if (iocb->ndlp == ndlp)
                 return 1;
             fallthrough;
         case CMD_ELS_REQUEST64_CR:
             if (remote_id == ndlp->nlp_DID)
                 return 1;
             fallthrough;
         case CMD_XMIT_ELS_RSP64_CX:
             if (iocb->ndlp == ndlp)
                 return 1;
         }
     } else if (pring->ringno == LPFC_FCP_RING) {
         /* Skip match check if waiting to relogin to FCP target */
         if ((ndlp->nlp_type & NLP_FCP_TARGET) &&
             (ndlp->nlp_flag & NLP_DELAY_TMO)) {
             return 0;
         }
         if (ulp_context == ndlp->nlp_rpi)
             return 1;
     }
     return 0;
 }
 
 static void
 __lpfc_dequeue_nport_iocbs(struct lpfc_hba *phba,
         struct lpfc_nodelist *ndlp, struct lpfc_sli_ring *pring,
         struct list_head *dequeue_list)
 {
     struct lpfc_iocbq *iocb, *next_iocb;
 
     list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
         /* Check to see if iocb matches the nport */
         if (lpfc_check_sli_ndlp(phba, pring, iocb, ndlp))
             /* match, dequeue */
             list_move_tail(&iocb->list, dequeue_list);
     }
 }
 
 static void
 lpfc_sli3_dequeue_nport_iocbs(struct lpfc_hba *phba,
         struct lpfc_nodelist *ndlp, struct list_head *dequeue_list)
 {
     struct lpfc_sli *psli = &phba->sli;
     uint32_t i;
 
     spin_lock_irq(&phba->hbalock);
     for (i = 0; i < psli->num_rings; i++)
         __lpfc_dequeue_nport_iocbs(phba, ndlp, &psli->sli3_ring[i],
                         dequeue_list);
     spin_unlock_irq(&phba->hbalock);
 }
 
 static void
 lpfc_sli4_dequeue_nport_iocbs(struct lpfc_hba *phba,
         struct lpfc_nodelist *ndlp, struct list_head *dequeue_list)
 {
     struct lpfc_sli_ring *pring;
     struct lpfc_queue *qp = NULL;
 
     spin_lock_irq(&phba->hbalock);
     list_for_each_entry(qp, &phba->sli4_hba.lpfc_wq_list, wq_list) {
         pring = qp->pring;
         if (!pring)
             continue;
         spin_lock(&pring->ring_lock);
         __lpfc_dequeue_nport_iocbs(phba, ndlp, pring, dequeue_list);
         spin_unlock(&pring->ring_lock);
     }
     spin_unlock_irq(&phba->hbalock);
 }
 
 /*
  * Free resources / clean up outstanding I/Os
  * associated with nlp_rpi in the LPFC_NODELIST entry.
  */
 static int
 lpfc_no_rpi(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
 {
     LIST_HEAD(completions);
 
     lpfc_fabric_abort_nport(ndlp);
 
     /*
      * Everything that matches on txcmplq will be returned
      * by firmware with a no rpi error.
      */
     if (ndlp->nlp_flag & NLP_RPI_REGISTERED) {
         if (phba->sli_rev != LPFC_SLI_REV4)
             lpfc_sli3_dequeue_nport_iocbs(phba, ndlp, &completions);
         else
             lpfc_sli4_dequeue_nport_iocbs(phba, ndlp, &completions);
     }
 
     /* Cancel all the IOCBs from the completions list */
     lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
                   IOERR_SLI_ABORTED);
 
     return 0;
 }
 
 /**
  * lpfc_nlp_logo_unreg - Unreg mailbox completion handler before LOGO
  * @phba: Pointer to HBA context object.
  * @pmb: Pointer to mailbox object.
  *
  * This function will issue an ELS LOGO command after completing
  * the UNREG_RPI.
  **/
 static void
 lpfc_nlp_logo_unreg(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
 {
     struct lpfc_vport  *vport = pmb->vport;
     struct lpfc_nodelist *ndlp;
 
     ndlp = (struct lpfc_nodelist *)(pmb->ctx_ndlp);
     if (!ndlp)
         return;
     lpfc_issue_els_logo(vport, ndlp, 0);
 
     /* Check to see if there are any deferred events to process */
     if ((ndlp->nlp_flag & NLP_UNREG_INP) &&
         (ndlp->nlp_defer_did != NLP_EVT_NOTHING_PENDING)) {
         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
                  "1434 UNREG cmpl deferred logo x%x "
                  "on NPort x%x Data: x%x x%px\n",
                  ndlp->nlp_rpi, ndlp->nlp_DID,
                  ndlp->nlp_defer_did, ndlp);
 
         ndlp->nlp_flag &= ~NLP_UNREG_INP;
         ndlp->nlp_defer_did = NLP_EVT_NOTHING_PENDING;
         lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
     } else {
         /* NLP_RELEASE_RPI is only set for SLI4 ports. */
         if (ndlp->nlp_flag & NLP_RELEASE_RPI) {
             lpfc_sli4_free_rpi(vport->phba, ndlp->nlp_rpi);
             spin_lock_irq(&ndlp->lock);
             ndlp->nlp_flag &= ~NLP_RELEASE_RPI;
             ndlp->nlp_rpi = LPFC_RPI_ALLOC_ERROR;
             spin_unlock_irq(&ndlp->lock);
         }
         spin_lock_irq(&ndlp->lock);
         ndlp->nlp_flag &= ~NLP_UNREG_INP;
         spin_unlock_irq(&ndlp->lock);
     }
 
     /* The node has an outstanding reference for the unreg. Now
      * that the LOGO action and cleanup are finished, release
      * resources.
      */
     lpfc_nlp_put(ndlp);
     mempool_free(pmb, phba->mbox_mem_pool);
 }
 
 /*
  * Sets the mailbox completion handler to be used for the
  * unreg_rpi command. The handler varies based on the state of
  * the port and what will be happening to the rpi next.
  */
 static void
 lpfc_set_unreg_login_mbx_cmpl(struct lpfc_hba *phba, struct lpfc_vport *vport,
     struct lpfc_nodelist *ndlp, LPFC_MBOXQ_t *mbox)
 {
     unsigned long iflags;
 
     /* Driver always gets a reference on the mailbox job
      * in support of async jobs.
      */
     mbox->ctx_ndlp = lpfc_nlp_get(ndlp);
     if (!mbox->ctx_ndlp)
         return;
 
     if (ndlp->nlp_flag & NLP_ISSUE_LOGO) {
         mbox->mbox_cmpl = lpfc_nlp_logo_unreg;
 
     } else if (phba->sli_rev == LPFC_SLI_REV4 &&
            (!(vport->load_flag & FC_UNLOADING)) &&
             (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) >=
                       LPFC_SLI_INTF_IF_TYPE_2) &&
             (kref_read(&ndlp->kref) > 0)) {
         mbox->mbox_cmpl = lpfc_sli4_unreg_rpi_cmpl_clr;
     } else {
         if (vport->load_flag & FC_UNLOADING) {
             if (phba->sli_rev == LPFC_SLI_REV4) {
                 spin_lock_irqsave(&ndlp->lock, iflags);
                 ndlp->nlp_flag |= NLP_RELEASE_RPI;
                 spin_unlock_irqrestore(&ndlp->lock, iflags);
             }
         }
         mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
     }
 }
 
 /*
  * Free rpi associated with LPFC_NODELIST entry.
  * This routine is called from lpfc_freenode(), when we are removing
  * a LPFC_NODELIST entry. It is also called if the driver initiates a
  * LOGO that completes successfully, and we are waiting to PLOGI back
  * to the remote NPort. In addition, it is called after we receive
  * and unsolicated ELS cmd, send back a rsp, the rsp completes and
  * we are waiting to PLOGI back to the remote NPort.
  */
 int
 lpfc_unreg_rpi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
 {
     struct lpfc_hba *phba = vport->phba;
     LPFC_MBOXQ_t    *mbox;
     int rc, acc_plogi = 1;
     uint16_t rpi;
 
     if (ndlp->nlp_flag & NLP_RPI_REGISTERED ||
         ndlp->nlp_flag & NLP_REG_LOGIN_SEND) {
         if (ndlp->nlp_flag & NLP_REG_LOGIN_SEND)
             lpfc_printf_vlog(vport, KERN_INFO,
                      LOG_NODE | LOG_DISCOVERY,
                      "3366 RPI x%x needs to be "
                      "unregistered nlp_flag x%x "
                      "did x%x\n",
                      ndlp->nlp_rpi, ndlp->nlp_flag,
                      ndlp->nlp_DID);
 
         /* If there is already an UNREG in progress for this ndlp,
          * no need to queue up another one.
          */
         if (ndlp->nlp_flag & NLP_UNREG_INP) {
             lpfc_printf_vlog(vport, KERN_INFO,
                      LOG_NODE | LOG_DISCOVERY,
                      "1436 unreg_rpi SKIP UNREG x%x on "
                      "NPort x%x deferred x%x  flg x%x "
                      "Data: x%px\n",
                      ndlp->nlp_rpi, ndlp->nlp_DID,
                      ndlp->nlp_defer_did,
                      ndlp->nlp_flag, ndlp);
             goto out;
         }
 
         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
         if (mbox) {
             /* SLI4 ports require the physical rpi value. */
             rpi = ndlp->nlp_rpi;
             if (phba->sli_rev == LPFC_SLI_REV4)
                 rpi = phba->sli4_hba.rpi_ids[ndlp->nlp_rpi];
 
             lpfc_unreg_login(phba, vport->vpi, rpi, mbox);
             mbox->vport = vport;
             lpfc_set_unreg_login_mbx_cmpl(phba, vport, ndlp, mbox);
             if (!mbox->ctx_ndlp) {
                 mempool_free(mbox, phba->mbox_mem_pool);
                 return 1;
             }
 
             if (mbox->mbox_cmpl == lpfc_sli4_unreg_rpi_cmpl_clr)
                 /*
                  * accept PLOGIs after unreg_rpi_cmpl
                  */
                 acc_plogi = 0;
             if (((ndlp->nlp_DID & Fabric_DID_MASK) !=
                 Fabric_DID_MASK) &&
                 (!(vport->fc_flag & FC_OFFLINE_MODE)))
                 ndlp->nlp_flag |= NLP_UNREG_INP;
 
             lpfc_printf_vlog(vport, KERN_INFO,
                      LOG_NODE | LOG_DISCOVERY,
                      "1433 unreg_rpi UNREG x%x on "
                      "NPort x%x deferred flg x%x "
                      "Data:x%px\n",
                      ndlp->nlp_rpi, ndlp->nlp_DID,
                      ndlp->nlp_flag, ndlp);
 
             rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
             if (rc == MBX_NOT_FINISHED) {
                 ndlp->nlp_flag &= ~NLP_UNREG_INP;
                 mempool_free(mbox, phba->mbox_mem_pool);
                 acc_plogi = 1;
                 lpfc_nlp_put(ndlp);
             }
         } else {
             lpfc_printf_vlog(vport, KERN_INFO,
                      LOG_NODE | LOG_DISCOVERY,
                      "1444 Failed to allocate mempool "
                      "unreg_rpi UNREG x%x, "
                      "DID x%x, flag x%x, "
                      "ndlp x%px\n",
                      ndlp->nlp_rpi, ndlp->nlp_DID,
                      ndlp->nlp_flag, ndlp);
 
             /* Because mempool_alloc failed, we
              * will issue a LOGO here and keep the rpi alive if
              * not unloading.
              */
             if (!(vport->load_flag & FC_UNLOADING)) {
                 ndlp->nlp_flag &= ~NLP_UNREG_INP;
                 lpfc_issue_els_logo(vport, ndlp, 0);
                 ndlp->nlp_prev_state = ndlp->nlp_state;
                 lpfc_nlp_set_state(vport, ndlp,
                            NLP_STE_NPR_NODE);
             }
 
             return 1;
         }
         lpfc_no_rpi(phba, ndlp);
 out:
         if (phba->sli_rev != LPFC_SLI_REV4)
             ndlp->nlp_rpi = 0;
         ndlp->nlp_flag &= ~NLP_RPI_REGISTERED;
         ndlp->nlp_flag &= ~NLP_NPR_ADISC;
         if (acc_plogi)
             ndlp->nlp_flag &= ~NLP_LOGO_ACC;
         return 1;
     }
     ndlp->nlp_flag &= ~NLP_LOGO_ACC;
     return 0;
 }
 
 /**
  * lpfc_unreg_hba_rpis - Unregister rpis registered to the hba.
  * @phba: pointer to lpfc hba data structure.
  *
  * This routine is invoked to unregister all the currently registered RPIs
  * to the HBA.
  **/
 void
 lpfc_unreg_hba_rpis(struct lpfc_hba *phba)
 {
     struct lpfc_vport **vports;
     struct lpfc_nodelist *ndlp;
     struct Scsi_Host *shost;
     int i;
 
     vports = lpfc_create_vport_work_array(phba);
     if (!vports) {
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "2884 Vport array allocation failed \n");
         return;
     }
     for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
         shost = lpfc_shost_from_vport(vports[i]);
         spin_lock_irq(shost->host_lock);
         list_for_each_entry(ndlp, &vports[i]->fc_nodes, nlp_listp) {
             if (ndlp->nlp_flag & NLP_RPI_REGISTERED) {
                 /* The mempool_alloc might sleep */
                 spin_unlock_irq(shost->host_lock);
                 lpfc_unreg_rpi(vports[i], ndlp);
                 spin_lock_irq(shost->host_lock);
             }
         }
         spin_unlock_irq(shost->host_lock);
     }
     lpfc_destroy_vport_work_array(phba, vports);
 }
 
 void
 lpfc_unreg_all_rpis(struct lpfc_vport *vport)
 {
     struct lpfc_hba  *phba  = vport->phba;
     LPFC_MBOXQ_t     *mbox;
     int rc;
 
     if (phba->sli_rev == LPFC_SLI_REV4) {
         lpfc_sli4_unreg_all_rpis(vport);
         return;
     }
 
     mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
     if (mbox) {
         lpfc_unreg_login(phba, vport->vpi, LPFC_UNREG_ALL_RPIS_VPORT,
                  mbox);
         mbox->vport = vport;
         mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
         mbox->ctx_ndlp = NULL;
         rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO);
         if (rc != MBX_TIMEOUT)
             mempool_free(mbox, phba->mbox_mem_pool);
 
         if ((rc == MBX_TIMEOUT) || (rc == MBX_NOT_FINISHED))
             lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
                      "1836 Could not issue "
                      "unreg_login(all_rpis) status %d\n",
                      rc);
     }
 }
 
 void
 lpfc_unreg_default_rpis(struct lpfc_vport *vport)
 {
     struct lpfc_hba  *phba  = vport->phba;
     LPFC_MBOXQ_t     *mbox;
     int rc;
 
     /* Unreg DID is an SLI3 operation. */
     if (phba->sli_rev > LPFC_SLI_REV3)
         return;
 
     mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
     if (mbox) {
         lpfc_unreg_did(phba, vport->vpi, LPFC_UNREG_ALL_DFLT_RPIS,
                    mbox);
         mbox->vport = vport;
         mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
         mbox->ctx_ndlp = NULL;
         rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO);
         if (rc != MBX_TIMEOUT)
             mempool_free(mbox, phba->mbox_mem_pool);
 
         if ((rc == MBX_TIMEOUT) || (rc == MBX_NOT_FINISHED))
             lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
                      "1815 Could not issue "
                      "unreg_did (default rpis) status %d\n",
                      rc);
     }
 }
 
 /*
  * Free resources associated with LPFC_NODELIST entry
  * so it can be freed.
  */
 static int
 lpfc_cleanup_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
 {
     struct lpfc_hba  *phba = vport->phba;
     LPFC_MBOXQ_t *mb, *nextmb;
 
     /* Cleanup node for NPort <nlp_DID> */
     lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
              "0900 Cleanup node for NPort x%x "
              "Data: x%x x%x x%x\n",
              ndlp->nlp_DID, ndlp->nlp_flag,
              ndlp->nlp_state, ndlp->nlp_rpi);
     lpfc_dequeue_node(vport, ndlp);
 
     /* Don't need to clean up REG_LOGIN64 cmds for Default RPI cleanup */
 
     /* cleanup any ndlp on mbox q waiting for reglogin cmpl */
     if ((mb = phba->sli.mbox_active)) {
         if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
            !(mb->mbox_flag & LPFC_MBX_IMED_UNREG) &&
            (ndlp == (struct lpfc_nodelist *)mb->ctx_ndlp)) {
             mb->ctx_ndlp = NULL;
             mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
         }
     }
 
     spin_lock_irq(&phba->hbalock);
     /* Cleanup REG_LOGIN completions which are not yet processed */
     list_for_each_entry(mb, &phba->sli.mboxq_cmpl, list) {
         if ((mb->u.mb.mbxCommand != MBX_REG_LOGIN64) ||
             (mb->mbox_flag & LPFC_MBX_IMED_UNREG) ||
             (ndlp != (struct lpfc_nodelist *)mb->ctx_ndlp))
             continue;
 
         mb->ctx_ndlp = NULL;
         mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
     }
 
     list_for_each_entry_safe(mb, nextmb, &phba->sli.mboxq, list) {
         if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
            !(mb->mbox_flag & LPFC_MBX_IMED_UNREG) &&
             (ndlp == (struct lpfc_nodelist *)mb->ctx_ndlp)) {
             list_del(&mb->list);
             lpfc_mbox_rsrc_cleanup(phba, mb, MBOX_THD_LOCKED);
 
             /* Don't invoke lpfc_nlp_put. The driver is in
              * lpfc_nlp_release context.
              */
         }
     }
     spin_unlock_irq(&phba->hbalock);
 
     lpfc_els_abort(phba, ndlp);
 
     spin_lock_irq(&ndlp->lock);
     ndlp->nlp_flag &= ~NLP_DELAY_TMO;
     spin_unlock_irq(&ndlp->lock);
 
     ndlp->nlp_last_elscmd = 0;
     del_timer_sync(&ndlp->nlp_delayfunc);
 
     list_del_init(&ndlp->els_retry_evt.evt_listp);
     list_del_init(&ndlp->dev_loss_evt.evt_listp);
     list_del_init(&ndlp->recovery_evt.evt_listp);
     lpfc_cleanup_vports_rrqs(vport, ndlp);
 
     if (phba->sli_rev == LPFC_SLI_REV4)
         ndlp->nlp_flag |= NLP_RELEASE_RPI;
 
     return 0;
 }
 
 static int
 lpfc_matchdid(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
           uint32_t did)
 {
     D_ID mydid, ndlpdid, matchdid;
 
     if (did == Bcast_DID)
         return 0;
 
     /* First check for Direct match */
     if (ndlp->nlp_DID == did)
         return 1;
 
     /* Next check for area/domain identically equals 0 match */
     mydid.un.word = vport->fc_myDID;
     if ((mydid.un.b.domain == 0) && (mydid.un.b.area == 0)) {
         return 0;
     }
 
     matchdid.un.word = did;
     ndlpdid.un.word = ndlp->nlp_DID;
     if (matchdid.un.b.id == ndlpdid.un.b.id) {
         if ((mydid.un.b.domain == matchdid.un.b.domain) &&
             (mydid.un.b.area == matchdid.un.b.area)) {
             /* This code is supposed to match the ID
              * for a private loop device that is
              * connect to fl_port. But we need to
              * check that the port did not just go
              * from pt2pt to fabric or we could end
              * up matching ndlp->nlp_DID 000001 to
              * fabric DID 0x20101
              */
             if ((ndlpdid.un.b.domain == 0) &&
                 (ndlpdid.un.b.area == 0)) {
                 if (ndlpdid.un.b.id &&
                     vport->phba->fc_topology ==
                     LPFC_TOPOLOGY_LOOP)
                     return 1;
             }
             return 0;
         }
 
         matchdid.un.word = ndlp->nlp_DID;
         if ((mydid.un.b.domain == ndlpdid.un.b.domain) &&
             (mydid.un.b.area == ndlpdid.un.b.area)) {
             if ((matchdid.un.b.domain == 0) &&
                 (matchdid.un.b.area == 0)) {
                 if (matchdid.un.b.id)
                     return 1;
             }
         }
     }
     return 0;
 }
 
 /* Search for a nodelist entry */
 static struct lpfc_nodelist *
 __lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did)
 {
     struct lpfc_nodelist *ndlp;
     uint32_t data1;
 
     list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
         if (lpfc_matchdid(vport, ndlp, did)) {
             data1 = (((uint32_t)ndlp->nlp_state << 24) |
                  ((uint32_t)ndlp->nlp_xri << 16) |
                  ((uint32_t)ndlp->nlp_type << 8)
                  );
             lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
                      "0929 FIND node DID "
                      "Data: x%px x%x x%x x%x x%x x%px\n",
                      ndlp, ndlp->nlp_DID,
                      ndlp->nlp_flag, data1, ndlp->nlp_rpi,
                      ndlp->active_rrqs_xri_bitmap);
             return ndlp;
         }
     }
 
     /* FIND node did <did> NOT FOUND */
     lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
              "0932 FIND node did x%x NOT FOUND.\n", did);
     return NULL;
 }
 
 struct lpfc_nodelist *
 lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did)
 {
     struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
     struct lpfc_nodelist *ndlp;
     unsigned long iflags;
 
     spin_lock_irqsave(shost->host_lock, iflags);
     ndlp = __lpfc_findnode_did(vport, did);
     spin_unlock_irqrestore(shost->host_lock, iflags);
     return ndlp;
 }
 
 struct lpfc_nodelist *
 lpfc_findnode_mapped(struct lpfc_vport *vport)
 {
     struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
     struct lpfc_nodelist *ndlp;
     uint32_t data1;
     unsigned long iflags;
 
     spin_lock_irqsave(shost->host_lock, iflags);
 
     list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
         if (ndlp->nlp_state == NLP_STE_UNMAPPED_NODE ||
             ndlp->nlp_state == NLP_STE_MAPPED_NODE) {
             data1 = (((uint32_t)ndlp->nlp_state << 24) |
                  ((uint32_t)ndlp->nlp_xri << 16) |
                  ((uint32_t)ndlp->nlp_type << 8) |
                  ((uint32_t)ndlp->nlp_rpi & 0xff));
             spin_unlock_irqrestore(shost->host_lock, iflags);
             lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
                      "2025 FIND node DID "
                      "Data: x%px x%x x%x x%x x%px\n",
                      ndlp, ndlp->nlp_DID,
                      ndlp->nlp_flag, data1,
                      ndlp->active_rrqs_xri_bitmap);
             return ndlp;
         }
     }
     spin_unlock_irqrestore(shost->host_lock, iflags);
 
     /* FIND node did <did> NOT FOUND */
     lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
              "2026 FIND mapped did NOT FOUND.\n");
     return NULL;
 }
 
 struct lpfc_nodelist *
 lpfc_setup_disc_node(struct lpfc_vport *vport, uint32_t did)
 {
     struct lpfc_nodelist *ndlp;
 
     ndlp = lpfc_findnode_did(vport, did);
     if (!ndlp) {
         if (vport->phba->nvmet_support)
             return NULL;
         if ((vport->fc_flag & FC_RSCN_MODE) != 0 &&
             lpfc_rscn_payload_check(vport, did) == 0)
             return NULL;
         ndlp = lpfc_nlp_init(vport, did);
         if (!ndlp)
             return NULL;
         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
 
         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
                  "6453 Setup New Node 2B_DISC x%x "
                  "Data:x%x x%x x%x\n",
                  ndlp->nlp_DID, ndlp->nlp_flag,
                  ndlp->nlp_state, vport->fc_flag);
 
         spin_lock_irq(&ndlp->lock);
         ndlp->nlp_flag |= NLP_NPR_2B_DISC;
         spin_unlock_irq(&ndlp->lock);
         return ndlp;
     }
 
     /* The NVME Target does not want to actively manage an rport.
      * The goal is to allow the target to reset its state and clear
      * pending IO in preparation for the initiator to recover.
      */
     if ((vport->fc_flag & FC_RSCN_MODE) &&
         !(vport->fc_flag & FC_NDISC_ACTIVE)) {
         if (lpfc_rscn_payload_check(vport, did)) {
 
             /* Since this node is marked for discovery,
              * delay timeout is not needed.
              */
             lpfc_cancel_retry_delay_tmo(vport, ndlp);
 
             lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
                      "6455 Setup RSCN Node 2B_DISC x%x "
                      "Data:x%x x%x x%x\n",
                      ndlp->nlp_DID, ndlp->nlp_flag,
                      ndlp->nlp_state, vport->fc_flag);
 
             /* NVME Target mode waits until rport is known to be
              * impacted by the RSCN before it transitions.  No
              * active management - just go to NPR provided the
              * node had a valid login.
              */
             if (vport->phba->nvmet_support)
                 return ndlp;
 
             /* If we've already received a PLOGI from this NPort
              * we don't need to try to discover it again.
              */
             if (ndlp->nlp_flag & NLP_RCV_PLOGI &&
                 !(ndlp->nlp_type &
                  (NLP_FCP_TARGET | NLP_NVME_TARGET)))
                 return NULL;
 
             ndlp->nlp_prev_state = ndlp->nlp_state;
             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);
         } else {
             lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
                      "6456 Skip Setup RSCN Node x%x "
                      "Data:x%x x%x x%x\n",
                      ndlp->nlp_DID, ndlp->nlp_flag,
                      ndlp->nlp_state, vport->fc_flag);
             ndlp = NULL;
         }
     } else {
         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
                  "6457 Setup Active Node 2B_DISC x%x "
                  "Data:x%x x%x x%x\n",
                  ndlp->nlp_DID, ndlp->nlp_flag,
                  ndlp->nlp_state, vport->fc_flag);
 
         /* If the initiator received a PLOGI from this NPort or if the
          * initiator is already in the process of discovery on it,
          * there's no need to try to discover it again.
          */
         if (ndlp->nlp_state == NLP_STE_ADISC_ISSUE ||
             ndlp->nlp_state == NLP_STE_PLOGI_ISSUE ||
             (!vport->phba->nvmet_support &&
              ndlp->nlp_flag & NLP_RCV_PLOGI))
             return NULL;
 
         if (vport->phba->nvmet_support)
             return ndlp;
 
         /* Moving to NPR state clears unsolicited flags and
          * allows for rediscovery
          */
         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);
     }
     return ndlp;
 }
 
 /* Build a list of nodes to discover based on the loopmap */
 void
 lpfc_disc_list_loopmap(struct lpfc_vport *vport)
 {
     struct lpfc_hba  *phba = vport->phba;
     int j;
     uint32_t alpa, index;
 
     if (!lpfc_is_link_up(phba))
         return;
 
     if (phba->fc_topology != LPFC_TOPOLOGY_LOOP)
         return;
 
     /* Check for loop map present or not */
     if (phba->alpa_map[0]) {
         for (j = 1; j <= phba->alpa_map[0]; j++) {
             alpa = phba->alpa_map[j];
             if (((vport->fc_myDID & 0xff) == alpa) || (alpa == 0))
                 continue;
             lpfc_setup_disc_node(vport, alpa);
         }
     } else {
         /* No alpamap, so try all alpa's */
         for (j = 0; j < FC_MAXLOOP; j++) {
             /* If cfg_scan_down is set, start from highest
              * ALPA (0xef) to lowest (0x1).
              */
             if (vport->cfg_scan_down)
                 index = j;
             else
                 index = FC_MAXLOOP - j - 1;
             alpa = lpfcAlpaArray[index];
             if ((vport->fc_myDID & 0xff) == alpa)
                 continue;
             lpfc_setup_disc_node(vport, alpa);
         }
     }
     return;
 }
 
 /* SLI3 only */
 void
 lpfc_issue_clear_la(struct lpfc_hba *phba, struct lpfc_vport *vport)
 {
     LPFC_MBOXQ_t *mbox;
     struct lpfc_sli *psli = &phba->sli;
     struct lpfc_sli_ring *extra_ring = &psli->sli3_ring[LPFC_EXTRA_RING];
     struct lpfc_sli_ring *fcp_ring   = &psli->sli3_ring[LPFC_FCP_RING];
     int  rc;
 
     /*
      * if it's not a physical port or if we already send
      * clear_la then don't send it.
      */
     if ((phba->link_state >= LPFC_CLEAR_LA) ||
         (vport->port_type != LPFC_PHYSICAL_PORT) ||
         (phba->sli_rev == LPFC_SLI_REV4))
         return;
 
             /* Link up discovery */
     if ((mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL)) != NULL) {
         phba->link_state = LPFC_CLEAR_LA;
         lpfc_clear_la(phba, mbox);
         mbox->mbox_cmpl = lpfc_mbx_cmpl_clear_la;
         mbox->vport = vport;
         rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
         if (rc == MBX_NOT_FINISHED) {
             mempool_free(mbox, phba->mbox_mem_pool);
             lpfc_disc_flush_list(vport);
             extra_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
             fcp_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
             phba->link_state = LPFC_HBA_ERROR;
         }
     }
 }
 
 /* Reg_vpi to tell firmware to resume normal operations */
 void
 lpfc_issue_reg_vpi(struct lpfc_hba *phba, struct lpfc_vport *vport)
 {
     LPFC_MBOXQ_t *regvpimbox;
 
     regvpimbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
     if (regvpimbox) {
         lpfc_reg_vpi(vport, regvpimbox);
         regvpimbox->mbox_cmpl = lpfc_mbx_cmpl_reg_vpi;
         regvpimbox->vport = vport;
         if (lpfc_sli_issue_mbox(phba, regvpimbox, MBX_NOWAIT)
                     == MBX_NOT_FINISHED) {
             mempool_free(regvpimbox, phba->mbox_mem_pool);
         }
     }
 }
 
 /* Start Link up / RSCN discovery on NPR nodes */
 void
 lpfc_disc_start(struct lpfc_vport *vport)
 {
     struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
     struct lpfc_hba  *phba = vport->phba;
     uint32_t num_sent;
     uint32_t clear_la_pending;
 
     if (!lpfc_is_link_up(phba)) {
         lpfc_printf_vlog(vport, KERN_INFO, LOG_SLI,
                  "3315 Link is not up %x\n",
                  phba->link_state);
         return;
     }
 
     if (phba->link_state == LPFC_CLEAR_LA)
         clear_la_pending = 1;
     else
         clear_la_pending = 0;
 
     if (vport->port_state < LPFC_VPORT_READY)
         vport->port_state = LPFC_DISC_AUTH;
 
     lpfc_set_disctmo(vport);
 
     vport->fc_prevDID = vport->fc_myDID;
     vport->num_disc_nodes = 0;
 
     /* Start Discovery state <hba_state> */
     lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
              "0202 Start Discovery port state x%x "
              "flg x%x Data: x%x x%x x%x\n",
              vport->port_state, vport->fc_flag, vport->fc_plogi_cnt,
              vport->fc_adisc_cnt, vport->fc_npr_cnt);
 
     /* First do ADISCs - if any */
     num_sent = lpfc_els_disc_adisc(vport);
 
     if (num_sent)
         return;
 
     /* Register the VPI for SLI3, NPIV only. */
     if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
         !(vport->fc_flag & FC_PT2PT) &&
         !(vport->fc_flag & FC_RSCN_MODE) &&
         (phba->sli_rev < LPFC_SLI_REV4)) {
         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 && !clear_la_pending) {
         /* 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 nodes and 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);
             }
         }
         vport->port_state = LPFC_VPORT_READY;
     } else {
         /* Next do PLOGIs - if any */
         num_sent = lpfc_els_disc_plogi(vport);
 
         if (num_sent)
             return;
 
         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 == 0) &&
                 (!(vport->fc_flag & FC_RSCN_DISCOVERY))) {
                 spin_lock_irq(shost->host_lock);
                 vport->fc_flag &= ~FC_RSCN_MODE;
                 spin_unlock_irq(shost->host_lock);
                 lpfc_can_disctmo(vport);
             } else
                 lpfc_els_handle_rscn(vport);
         }
     }
     return;
 }
 
 /*
  *  Ignore completion for all IOCBs on tx and txcmpl queue for ELS
  *  ring the match the sppecified nodelist.
  */
 static void
 lpfc_free_tx(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
 {
     LIST_HEAD(completions);
     struct lpfc_iocbq    *iocb, *next_iocb;
     struct lpfc_sli_ring *pring;
     u32 ulp_command;
 
     pring = lpfc_phba_elsring(phba);
     if (unlikely(!pring))
         return;
 
     /* Error matching iocb on txq or txcmplq
      * First check the txq.
      */
     spin_lock_irq(&phba->hbalock);
     list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
         if (iocb->ndlp != ndlp)
             continue;
 
         ulp_command = get_job_cmnd(phba, iocb);
 
         if (ulp_command == CMD_ELS_REQUEST64_CR ||
             ulp_command == CMD_XMIT_ELS_RSP64_CX) {
 
             list_move_tail(&iocb->list, &completions);
         }
     }
 
     /* Next check the txcmplq */
     list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) {
         if (iocb->ndlp != ndlp)
             continue;
 
         ulp_command = get_job_cmnd(phba, iocb);
 
         if (ulp_command == CMD_ELS_REQUEST64_CR ||
             ulp_command == CMD_XMIT_ELS_RSP64_CX) {
             lpfc_sli_issue_abort_iotag(phba, pring, iocb, NULL);
         }
     }
     spin_unlock_irq(&phba->hbalock);
 
     /* Make sure HBA is alive */
     lpfc_issue_hb_tmo(phba);
 
     /* Cancel all the IOCBs from the completions list */
     lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
                   IOERR_SLI_ABORTED);
 }
 
 static void
 lpfc_disc_flush_list(struct lpfc_vport *vport)
 {
     struct lpfc_nodelist *ndlp, *next_ndlp;
     struct lpfc_hba *phba = vport->phba;
 
     if (vport->fc_plogi_cnt || vport->fc_adisc_cnt) {
         list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes,
                      nlp_listp) {
             if (ndlp->nlp_state == NLP_STE_PLOGI_ISSUE ||
                 ndlp->nlp_state == NLP_STE_ADISC_ISSUE) {
                 lpfc_free_tx(phba, ndlp);
             }
         }
     }
 }
 
 /*
  * lpfc_notify_xport_npr - notifies xport of node disappearance
  * @vport: Pointer to Virtual Port object.
  *
  * Transitions all ndlps to NPR state.  When lpfc_nlp_set_state
  * calls lpfc_nlp_state_cleanup, the ndlp->rport is unregistered
  * and transport notified that the node is gone.
  * Return Code:
  *  none
  */
 static void
 lpfc_notify_xport_npr(struct lpfc_vport *vport)
 {
     struct lpfc_nodelist *ndlp, *next_ndlp;
 
     list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes,
                  nlp_listp) {
         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
     }
 }
 void
 lpfc_cleanup_discovery_resources(struct lpfc_vport *vport)
 {
     lpfc_els_flush_rscn(vport);
     lpfc_els_flush_cmd(vport);
     lpfc_disc_flush_list(vport);
     if (pci_channel_offline(vport->phba->pcidev))
         lpfc_notify_xport_npr(vport);
 }
 
 /*****************************************************************************/
 /*
  * NAME:     lpfc_disc_timeout
  *
  * FUNCTION: Fibre Channel driver discovery timeout routine.
  *
  * EXECUTION ENVIRONMENT: interrupt only
  *
  * CALLED FROM:
  *      Timer function
  *
  * RETURNS:
  *      none
  */
 /*****************************************************************************/
 void
 lpfc_disc_timeout(struct timer_list *t)
 {
     struct lpfc_vport *vport = from_timer(vport, t, fc_disctmo);
     struct lpfc_hba   *phba = vport->phba;
     uint32_t tmo_posted;
     unsigned long flags = 0;
 
     if (unlikely(!phba))
         return;
 
     spin_lock_irqsave(&vport->work_port_lock, flags);
     tmo_posted = vport->work_port_events & WORKER_DISC_TMO;
     if (!tmo_posted)
         vport->work_port_events |= WORKER_DISC_TMO;
     spin_unlock_irqrestore(&vport->work_port_lock, flags);
 
     if (!tmo_posted)
         lpfc_worker_wake_up(phba);
     return;
 }
 
 static void
 lpfc_disc_timeout_handler(struct lpfc_vport *vport)
 {
     struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
     struct lpfc_hba  *phba = vport->phba;
     struct lpfc_sli  *psli = &phba->sli;
     struct lpfc_nodelist *ndlp, *next_ndlp;
     LPFC_MBOXQ_t *initlinkmbox;
     int rc, clrlaerr = 0;
 
     if (!(vport->fc_flag & FC_DISC_TMO))
         return;
 
     spin_lock_irq(shost->host_lock);
     vport->fc_flag &= ~FC_DISC_TMO;
     spin_unlock_irq(shost->host_lock);
 
     lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
         "disc timeout:    state:x%x rtry:x%x flg:x%x",
         vport->port_state, vport->fc_ns_retry, vport->fc_flag);
 
     switch (vport->port_state) {
 
     case LPFC_LOCAL_CFG_LINK:
         /*
          * port_state is identically  LPFC_LOCAL_CFG_LINK while
          * waiting for FAN timeout
          */
         lpfc_printf_vlog(vport, KERN_WARNING, LOG_DISCOVERY,
                  "0221 FAN timeout\n");
 
         /* Start discovery by sending FLOGI, clean up old rpis */
         list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes,
                      nlp_listp) {
             if (ndlp->nlp_state != NLP_STE_NPR_NODE)
                 continue;
             if (ndlp->nlp_type & NLP_FABRIC) {
                 /* Clean up the ndlp on Fabric connections */
                 lpfc_drop_node(vport, ndlp);
 
             } else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) {
                 /* Fail outstanding IO now since device
                  * is marked for PLOGI.
                  */
                 lpfc_unreg_rpi(vport, ndlp);
             }
         }
         if (vport->port_state != LPFC_FLOGI) {
             if (phba->sli_rev <= LPFC_SLI_REV3)
                 lpfc_initial_flogi(vport);
             else
                 lpfc_issue_init_vfi(vport);
             return;
         }
         break;
 
     case LPFC_FDISC:
     case LPFC_FLOGI:
     /* port_state is identically LPFC_FLOGI while waiting for FLOGI cmpl */
         /* Initial FLOGI timeout */
         lpfc_printf_vlog(vport, KERN_ERR,
                  LOG_TRACE_EVENT,
                  "0222 Initial %s timeout\n",
                  vport->vpi ? "FDISC" : "FLOGI");
 
         /* Assume no Fabric and go on with discovery.
          * Check for outstanding ELS FLOGI to abort.
          */
 
         /* FLOGI failed, so just use loop map to make discovery list */
         lpfc_disc_list_loopmap(vport);
 
         /* Start discovery */
         lpfc_disc_start(vport);
         break;
 
     case LPFC_FABRIC_CFG_LINK:
     /* hba_state is identically LPFC_FABRIC_CFG_LINK while waiting for
        NameServer login */
         lpfc_printf_vlog(vport, KERN_ERR,
                  LOG_TRACE_EVENT,
                  "0223 Timeout while waiting for "
                  "NameServer login\n");
         /* Next look for NameServer ndlp */
         ndlp = lpfc_findnode_did(vport, NameServer_DID);
         if (ndlp)
             lpfc_els_abort(phba, ndlp);
 
         /* ReStart discovery */
         goto restart_disc;
 
     case LPFC_NS_QRY:
     /* Check for wait for NameServer Rsp timeout */
         lpfc_printf_vlog(vport, KERN_ERR,
                  LOG_TRACE_EVENT,
                  "0224 NameServer Query timeout "
                  "Data: x%x x%x\n",
                  vport->fc_ns_retry, LPFC_MAX_NS_RETRY);
 
         if (vport->fc_ns_retry < LPFC_MAX_NS_RETRY) {
             /* Try it one more time */
             vport->fc_ns_retry++;
             vport->gidft_inp = 0;
             rc = lpfc_issue_gidft(vport);
             if (rc == 0)
                 break;
         }
         vport->fc_ns_retry = 0;
 
 restart_disc:
         /*
          * Discovery is over.
          * set port_state to PORT_READY if SLI2.
          * cmpl_reg_vpi will set port_state to READY for SLI3.
          */
         if (phba->sli_rev < LPFC_SLI_REV4) {
             if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
                 lpfc_issue_reg_vpi(phba, vport);
             else  {
                 lpfc_issue_clear_la(phba, vport);
                 vport->port_state = LPFC_VPORT_READY;
             }
         }
 
         /* Setup and issue mailbox INITIALIZE LINK command */
         initlinkmbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
         if (!initlinkmbox) {
             lpfc_printf_vlog(vport, KERN_ERR,
                      LOG_TRACE_EVENT,
                      "0206 Device Discovery "
                      "completion error\n");
             phba->link_state = LPFC_HBA_ERROR;
             break;
         }
 
         lpfc_linkdown(phba);
         lpfc_init_link(phba, initlinkmbox, phba->cfg_topology,
                    phba->cfg_link_speed);
         initlinkmbox->u.mb.un.varInitLnk.lipsr_AL_PA = 0;
         initlinkmbox->vport = vport;
         initlinkmbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
         rc = lpfc_sli_issue_mbox(phba, initlinkmbox, MBX_NOWAIT);
         lpfc_set_loopback_flag(phba);
         if (rc == MBX_NOT_FINISHED)
             mempool_free(initlinkmbox, phba->mbox_mem_pool);
 
         break;
 
     case LPFC_DISC_AUTH:
     /* Node Authentication timeout */
         lpfc_printf_vlog(vport, KERN_ERR,
                  LOG_TRACE_EVENT,
                  "0227 Node Authentication timeout\n");
         lpfc_disc_flush_list(vport);
 
         /*
          * set port_state to PORT_READY if SLI2.
          * cmpl_reg_vpi will set port_state to READY for SLI3.
          */
         if (phba->sli_rev < LPFC_SLI_REV4) {
             if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
                 lpfc_issue_reg_vpi(phba, vport);
             else  { /* NPIV Not enabled */
                 lpfc_issue_clear_la(phba, vport);
                 vport->port_state = LPFC_VPORT_READY;
             }
         }
         break;
 
     case LPFC_VPORT_READY:
         if (vport->fc_flag & FC_RSCN_MODE) {
             lpfc_printf_vlog(vport, KERN_ERR,
                      LOG_TRACE_EVENT,
                      "0231 RSCN timeout Data: x%x "
                      "x%x x%x x%x\n",
                      vport->fc_ns_retry, LPFC_MAX_NS_RETRY,
                      vport->port_state, vport->gidft_inp);
 
             /* Cleanup any outstanding ELS commands */
             lpfc_els_flush_cmd(vport);
 
             lpfc_els_flush_rscn(vport);
             lpfc_disc_flush_list(vport);
         }
         break;
 
     default:
         lpfc_printf_vlog(vport, KERN_ERR,
                  LOG_TRACE_EVENT,
                  "0273 Unexpected discovery timeout, "
                  "vport State x%x\n", vport->port_state);
         break;
     }
 
     switch (phba->link_state) {
     case LPFC_CLEAR_LA:
                 /* CLEAR LA timeout */
         lpfc_printf_vlog(vport, KERN_ERR,
                  LOG_TRACE_EVENT,
                  "0228 CLEAR LA timeout\n");
         clrlaerr = 1;
         break;
 
     case LPFC_LINK_UP:
         lpfc_issue_clear_la(phba, vport);
         fallthrough;
     case LPFC_LINK_UNKNOWN:
     case LPFC_WARM_START:
     case LPFC_INIT_START:
     case LPFC_INIT_MBX_CMDS:
     case LPFC_LINK_DOWN:
     case LPFC_HBA_ERROR:
         lpfc_printf_vlog(vport, KERN_ERR,
                  LOG_TRACE_EVENT,
                  "0230 Unexpected timeout, hba link "
                  "state x%x\n", phba->link_state);
         clrlaerr = 1;
         break;
 
     case LPFC_HBA_READY:
         break;
     }
 
     if (clrlaerr) {
         lpfc_disc_flush_list(vport);
         if (phba->sli_rev != LPFC_SLI_REV4) {
             psli->sli3_ring[(LPFC_EXTRA_RING)].flag &=
                 ~LPFC_STOP_IOCB_EVENT;
             psli->sli3_ring[LPFC_FCP_RING].flag &=
                 ~LPFC_STOP_IOCB_EVENT;
         }
         vport->port_state = LPFC_VPORT_READY;
     }
     return;
 }
 
 /*
  * This routine handles processing a NameServer REG_LOGIN mailbox
  * command upon completion. It is setup in the LPFC_MBOXQ
  * as the completion routine when the command is
  * handed off to the SLI layer.
  */
 void
 lpfc_mbx_cmpl_fdmi_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
 {
     MAILBOX_t *mb = &pmb->u.mb;
     struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *)pmb->ctx_ndlp;
     struct lpfc_vport    *vport = pmb->vport;
 
     pmb->ctx_ndlp = NULL;
 
     if (phba->sli_rev < LPFC_SLI_REV4)
         ndlp->nlp_rpi = mb->un.varWords[0];
     ndlp->nlp_flag |= NLP_RPI_REGISTERED;
     ndlp->nlp_type |= NLP_FABRIC;
     lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
     lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE | LOG_DISCOVERY,
              "0004 rpi:%x DID:%x flg:%x %d x%px\n",
              ndlp->nlp_rpi, ndlp->nlp_DID, ndlp->nlp_flag,
              kref_read(&ndlp->kref),
              ndlp);
     /*
      * Start issuing Fabric-Device Management Interface (FDMI) command to
      * 0xfffffa (FDMI well known port).
      * DHBA -> DPRT -> RHBA -> RPA  (physical port)
      * DPRT -> RPRT (vports)
      */
     if (vport->port_type == LPFC_PHYSICAL_PORT) {
         phba->link_flag &= ~LS_CT_VEN_RPA; /* For extra Vendor RPA */
         lpfc_fdmi_cmd(vport, ndlp, SLI_MGMT_DHBA, 0);
     } else {
         lpfc_fdmi_cmd(vport, ndlp, SLI_MGMT_DPRT, 0);
     }
 
 
     /* decrement the node reference count held for this callback
      * function.
      */
     lpfc_nlp_put(ndlp);
     lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED);
     return;
 }
 
 static int
 lpfc_filter_by_rpi(struct lpfc_nodelist *ndlp, void *param)
 {
     uint16_t *rpi = param;
 
     return ndlp->nlp_rpi == *rpi;
 }
 
 static int
 lpfc_filter_by_wwpn(struct lpfc_nodelist *ndlp, void *param)
 {
     return memcmp(&ndlp->nlp_portname, param,
               sizeof(ndlp->nlp_portname)) == 0;
 }
 
 static struct lpfc_nodelist *
 __lpfc_find_node(struct lpfc_vport *vport, node_filter filter, void *param)
 {
     struct lpfc_nodelist *ndlp;
 
     list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
         if (filter(ndlp, param)) {
             lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
                      "3185 FIND node filter %ps DID "
                      "ndlp x%px did x%x flg x%x st x%x "
                      "xri x%x type x%x rpi x%x\n",
                      filter, ndlp, ndlp->nlp_DID,
                      ndlp->nlp_flag, ndlp->nlp_state,
                      ndlp->nlp_xri, ndlp->nlp_type,
                      ndlp->nlp_rpi);
             return ndlp;
         }
     }
     lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
              "3186 FIND node filter %ps NOT FOUND.\n", filter);
     return NULL;
 }
 
 /*
  * This routine looks up the ndlp lists for the given RPI. If rpi found it
  * returns the node list element pointer else return NULL.
  */
 struct lpfc_nodelist *
 __lpfc_findnode_rpi(struct lpfc_vport *vport, uint16_t rpi)
 {
     return __lpfc_find_node(vport, lpfc_filter_by_rpi, &rpi);
 }
 
 /*
  * This routine looks up the ndlp lists for the given WWPN. If WWPN found it
  * returns the node element list pointer else return NULL.
  */
 struct lpfc_nodelist *
 lpfc_findnode_wwpn(struct lpfc_vport *vport, struct lpfc_name *wwpn)
 {
     struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
     struct lpfc_nodelist *ndlp;
 
     spin_lock_irq(shost->host_lock);
     ndlp = __lpfc_find_node(vport, lpfc_filter_by_wwpn, wwpn);
     spin_unlock_irq(shost->host_lock);
     return ndlp;
 }
 
 /*
  * This routine looks up the ndlp lists for the given RPI. If the rpi
  * is found, the routine returns the node element list pointer else
  * return NULL.
  */
 struct lpfc_nodelist *
 lpfc_findnode_rpi(struct lpfc_vport *vport, uint16_t rpi)
 {
     struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
     struct lpfc_nodelist *ndlp;
     unsigned long flags;
 
     spin_lock_irqsave(shost->host_lock, flags);
     ndlp = __lpfc_findnode_rpi(vport, rpi);
     spin_unlock_irqrestore(shost->host_lock, flags);
     return ndlp;
 }
 
 /**
  * lpfc_find_vport_by_vpid - Find a vport on a HBA through vport identifier
  * @phba: pointer to lpfc hba data structure.
  * @vpi: the physical host virtual N_Port identifier.
  *
  * This routine finds a vport on a HBA (referred by @phba) through a
  * @vpi. The function walks the HBA's vport list and returns the address
  * of the vport with the matching @vpi.
  *
  * Return code
  *    NULL - No vport with the matching @vpi found
  *    Otherwise - Address to the vport with the matching @vpi.
  **/
 struct lpfc_vport *
 lpfc_find_vport_by_vpid(struct lpfc_hba *phba, uint16_t vpi)
 {
     struct lpfc_vport *vport;
     unsigned long flags;
     int i = 0;
 
     /* The physical ports are always vpi 0 - translate is unnecessary. */
     if (vpi > 0) {
         /*
          * Translate the physical vpi to the logical vpi.  The
          * vport stores the logical vpi.
          */
         for (i = 0; i <= phba->max_vpi; i++) {
             if (vpi == phba->vpi_ids[i])
                 break;
         }
 
         if (i > phba->max_vpi) {
             lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                     "2936 Could not find Vport mapped "
                     "to vpi %d\n", vpi);
             return NULL;
         }
     }
 
     spin_lock_irqsave(&phba->port_list_lock, flags);
     list_for_each_entry(vport, &phba->port_list, listentry) {
         if (vport->vpi == i) {
             spin_unlock_irqrestore(&phba->port_list_lock, flags);
             return vport;
         }
     }
     spin_unlock_irqrestore(&phba->port_list_lock, flags);
     return NULL;
 }
 
 struct lpfc_nodelist *
 lpfc_nlp_init(struct lpfc_vport *vport, uint32_t did)
 {
     struct lpfc_nodelist *ndlp;
     int rpi = LPFC_RPI_ALLOC_ERROR;
 
     if (vport->phba->sli_rev == LPFC_SLI_REV4) {
         rpi = lpfc_sli4_alloc_rpi(vport->phba);
         if (rpi == LPFC_RPI_ALLOC_ERROR)
             return NULL;
     }
 
     ndlp = mempool_alloc(vport->phba->nlp_mem_pool, GFP_KERNEL);
     if (!ndlp) {
         if (vport->phba->sli_rev == LPFC_SLI_REV4)
             lpfc_sli4_free_rpi(vport->phba, rpi);
         return NULL;
     }
 
     memset(ndlp, 0, sizeof (struct lpfc_nodelist));
 
     spin_lock_init(&ndlp->lock);
 
     lpfc_initialize_node(vport, ndlp, did);
     INIT_LIST_HEAD(&ndlp->nlp_listp);
     if (vport->phba->sli_rev == LPFC_SLI_REV4) {
         ndlp->nlp_rpi = rpi;
         lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE | LOG_DISCOVERY,
                  "0007 Init New ndlp x%px, rpi:x%x DID:%x "
                  "flg:x%x refcnt:%d\n",
                  ndlp, ndlp->nlp_rpi, ndlp->nlp_DID,
                  ndlp->nlp_flag, kref_read(&ndlp->kref));
 
         ndlp->active_rrqs_xri_bitmap =
                 mempool_alloc(vport->phba->active_rrq_pool,
                           GFP_KERNEL);
         if (ndlp->active_rrqs_xri_bitmap)
             memset(ndlp->active_rrqs_xri_bitmap, 0,
                    ndlp->phba->cfg_rrq_xri_bitmap_sz);
     }
 
 
 
     lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
         "node init:       did:x%x",
         ndlp->nlp_DID, 0, 0);
 
     return ndlp;
 }
 
 /* This routine releases all resources associated with a specifc NPort's ndlp
  * and mempool_free's the nodelist.
  */
 static void
 lpfc_nlp_release(struct kref *kref)
 {
     struct lpfc_nodelist *ndlp = container_of(kref, struct lpfc_nodelist,
                           kref);
     struct lpfc_vport *vport = ndlp->vport;
 
     lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
         "node release:    did:x%x flg:x%x type:x%x",
         ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
 
     lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
              "0279 %s: ndlp: x%px did %x refcnt:%d rpi:%x\n",
              __func__, ndlp, ndlp->nlp_DID,
              kref_read(&ndlp->kref), ndlp->nlp_rpi);
 
     /* remove ndlp from action. */
     lpfc_cancel_retry_delay_tmo(vport, ndlp);
     lpfc_cleanup_node(vport, ndlp);
 
     /* Not all ELS transactions have registered the RPI with the port.
      * In these cases the rpi usage is temporary and the node is
      * released when the WQE is completed.  Catch this case to free the
      * RPI to the pool.  Because this node is in the release path, a lock
      * is unnecessary.  All references are gone and the node has been
      * dequeued.
      */
     if (ndlp->nlp_flag & NLP_RELEASE_RPI) {
         if (ndlp->nlp_rpi != LPFC_RPI_ALLOC_ERROR &&
             !(ndlp->nlp_flag & (NLP_RPI_REGISTERED | NLP_UNREG_INP))) {
             lpfc_sli4_free_rpi(vport->phba, ndlp->nlp_rpi);
             ndlp->nlp_rpi = LPFC_RPI_ALLOC_ERROR;
         }
     }
 
     /* The node is not freed back to memory, it is released to a pool so
      * the node fields need to be cleaned up.
      */
     ndlp->vport = NULL;
     ndlp->nlp_state = NLP_STE_FREED_NODE;
     ndlp->nlp_flag = 0;
     ndlp->fc4_xpt_flags = 0;
 
     /* free ndlp memory for final ndlp release */
     kfree(ndlp->lat_data);
     if (ndlp->phba->sli_rev == LPFC_SLI_REV4)
         mempool_free(ndlp->active_rrqs_xri_bitmap,
                 ndlp->phba->active_rrq_pool);
     mempool_free(ndlp, ndlp->phba->nlp_mem_pool);
 }
 
 /* This routine bumps the reference count for a ndlp structure to ensure
  * that one discovery thread won't free a ndlp while another discovery thread
  * is using it.
  */
 struct lpfc_nodelist *
 lpfc_nlp_get(struct lpfc_nodelist *ndlp)
 {
     unsigned long flags;
 
     if (ndlp) {
         lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
             "node get:        did:x%x flg:x%x refcnt:x%x",
             ndlp->nlp_DID, ndlp->nlp_flag,
             kref_read(&ndlp->kref));
 
         /* The check of ndlp usage to prevent incrementing the
          * ndlp reference count that is in the process of being
          * released.
          */
         spin_lock_irqsave(&ndlp->lock, flags);
         if (!kref_get_unless_zero(&ndlp->kref)) {
             spin_unlock_irqrestore(&ndlp->lock, flags);
             lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_NODE,
                 "0276 %s: ndlp:x%px refcnt:%d\n",
                 __func__, (void *)ndlp, kref_read(&ndlp->kref));
             return NULL;
         }
         spin_unlock_irqrestore(&ndlp->lock, flags);
     } else {
         WARN_ONCE(!ndlp, "**** %s, get ref on NULL ndlp!", __func__);
     }
 
     return ndlp;
 }
 
 /* This routine decrements the reference count for a ndlp structure. If the
  * count goes to 0, this indicates the associated nodelist should be freed.
  */
 int
 lpfc_nlp_put(struct lpfc_nodelist *ndlp)
 {
     if (ndlp) {
         lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
                 "node put:        did:x%x flg:x%x refcnt:x%x",
                 ndlp->nlp_DID, ndlp->nlp_flag,
                 kref_read(&ndlp->kref));
     } else {
         WARN_ONCE(!ndlp, "**** %s, put ref on NULL ndlp!", __func__);
     }
 
     return ndlp ? kref_put(&ndlp->kref, lpfc_nlp_release) : 0;
 }
 
 /* This routine free's the specified nodelist if it is not in use
  * by any other discovery thread. This routine returns 1 if the
  * ndlp has been freed. A return value of 0 indicates the ndlp is
  * not yet been released.
  */
 int
 lpfc_nlp_not_used(struct lpfc_nodelist *ndlp)
 {
     lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
         "node not used:   did:x%x flg:x%x refcnt:x%x",
         ndlp->nlp_DID, ndlp->nlp_flag,
         kref_read(&ndlp->kref));
 
     if (kref_read(&ndlp->kref) == 1)
         if (lpfc_nlp_put(ndlp))
             return 1;
     return 0;
 }
 
 /**
  * lpfc_fcf_inuse - Check if FCF can be unregistered.
  * @phba: Pointer to hba context object.
  *
  * This function iterate through all FC nodes associated
  * will all vports to check if there is any node with
  * fc_rports associated with it. If there is an fc_rport
  * associated with the node, then the node is either in
  * discovered state or its devloss_timer is pending.
  */
 static int
 lpfc_fcf_inuse(struct lpfc_hba *phba)
 {
     struct lpfc_vport **vports;
     int i, ret = 0;
     struct lpfc_nodelist *ndlp;
     struct Scsi_Host  *shost;
 
     vports = lpfc_create_vport_work_array(phba);
 
     /* If driver cannot allocate memory, indicate fcf is in use */
     if (!vports)
         return 1;
 
     for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
         shost = lpfc_shost_from_vport(vports[i]);
         spin_lock_irq(shost->host_lock);
         /*
          * IF the CVL_RCVD bit is not set then we have sent the
          * flogi.
          * If dev_loss fires while we are waiting we do not want to
          * unreg the fcf.
          */
         if (!(vports[i]->fc_flag & FC_VPORT_CVL_RCVD)) {
             spin_unlock_irq(shost->host_lock);
             ret =  1;
             goto out;
         }
         list_for_each_entry(ndlp, &vports[i]->fc_nodes, nlp_listp) {
             if (ndlp->rport &&
               (ndlp->rport->roles & FC_RPORT_ROLE_FCP_TARGET)) {
                 ret = 1;
                 spin_unlock_irq(shost->host_lock);
                 goto out;
             } else if (ndlp->nlp_flag & NLP_RPI_REGISTERED) {
                 ret = 1;
                 lpfc_printf_log(phba, KERN_INFO,
                         LOG_NODE | LOG_DISCOVERY,
                         "2624 RPI %x DID %x flag %x "
                         "still logged in\n",
                         ndlp->nlp_rpi, ndlp->nlp_DID,
                         ndlp->nlp_flag);
             }
         }
         spin_unlock_irq(shost->host_lock);
     }
 out:
     lpfc_destroy_vport_work_array(phba, vports);
     return ret;
 }
 
 /**
  * lpfc_unregister_vfi_cmpl - Completion handler for unreg vfi.
  * @phba: Pointer to hba context object.
  * @mboxq: Pointer to mailbox object.
  *
  * This function frees memory associated with the mailbox command.
  */
 void
 lpfc_unregister_vfi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
 {
     struct lpfc_vport *vport = mboxq->vport;
     struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
 
     if (mboxq->u.mb.mbxStatus) {
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "2555 UNREG_VFI mbxStatus error x%x "
                 "HBA state x%x\n",
                 mboxq->u.mb.mbxStatus, vport->port_state);
     }
     spin_lock_irq(shost->host_lock);
     phba->pport->fc_flag &= ~FC_VFI_REGISTERED;
     spin_unlock_irq(shost->host_lock);
     mempool_free(mboxq, phba->mbox_mem_pool);
     return;
 }
 
 /**
  * lpfc_unregister_fcfi_cmpl - Completion handler for unreg fcfi.
  * @phba: Pointer to hba context object.
  * @mboxq: Pointer to mailbox object.
  *
  * This function frees memory associated with the mailbox command.
  */
 static void
 lpfc_unregister_fcfi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
 {
     struct lpfc_vport *vport = mboxq->vport;
 
     if (mboxq->u.mb.mbxStatus) {
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "2550 UNREG_FCFI mbxStatus error x%x "
                 "HBA state x%x\n",
                 mboxq->u.mb.mbxStatus, vport->port_state);
     }
     mempool_free(mboxq, phba->mbox_mem_pool);
     return;
 }
 
 /**
  * lpfc_unregister_fcf_prep - Unregister fcf record preparation
  * @phba: Pointer to hba context object.
  *
  * This function prepare the HBA for unregistering the currently registered
  * FCF from the HBA. It performs unregistering, in order, RPIs, VPIs, and
  * VFIs.
  */
 int
 lpfc_unregister_fcf_prep(struct lpfc_hba *phba)
 {
     struct lpfc_vport **vports;
     struct lpfc_nodelist *ndlp;
     struct Scsi_Host *shost;
     int i = 0, rc;
 
     /* Unregister RPIs */
     if (lpfc_fcf_inuse(phba))
         lpfc_unreg_hba_rpis(phba);
 
     /* At this point, all discovery is aborted */
     phba->pport->port_state = LPFC_VPORT_UNKNOWN;
 
     /* Unregister VPIs */
     vports = lpfc_create_vport_work_array(phba);
     if (vports && (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED))
         for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
             /* Stop FLOGI/FDISC retries */
             ndlp = lpfc_findnode_did(vports[i], Fabric_DID);
             if (ndlp)
                 lpfc_cancel_retry_delay_tmo(vports[i], ndlp);
             lpfc_cleanup_pending_mbox(vports[i]);
             if (phba->sli_rev == LPFC_SLI_REV4)
                 lpfc_sli4_unreg_all_rpis(vports[i]);
             lpfc_mbx_unreg_vpi(vports[i]);
             shost = lpfc_shost_from_vport(vports[i]);
             spin_lock_irq(shost->host_lock);
             vports[i]->fc_flag |= FC_VPORT_NEEDS_INIT_VPI;
             vports[i]->vpi_state &= ~LPFC_VPI_REGISTERED;
             spin_unlock_irq(shost->host_lock);
         }
     lpfc_destroy_vport_work_array(phba, vports);
     if (i == 0 && (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED))) {
         ndlp = lpfc_findnode_did(phba->pport, Fabric_DID);
         if (ndlp)
             lpfc_cancel_retry_delay_tmo(phba->pport, ndlp);
         lpfc_cleanup_pending_mbox(phba->pport);
         if (phba->sli_rev == LPFC_SLI_REV4)
             lpfc_sli4_unreg_all_rpis(phba->pport);
         lpfc_mbx_unreg_vpi(phba->pport);
         shost = lpfc_shost_from_vport(phba->pport);
         spin_lock_irq(shost->host_lock);
         phba->pport->fc_flag |= FC_VPORT_NEEDS_INIT_VPI;
         phba->pport->vpi_state &= ~LPFC_VPI_REGISTERED;
         spin_unlock_irq(shost->host_lock);
     }
 
     /* Cleanup any outstanding ELS commands */
     lpfc_els_flush_all_cmd(phba);
 
     /* Unregister the physical port VFI */
     rc = lpfc_issue_unreg_vfi(phba->pport);
     return rc;
 }
 
 /**
  * lpfc_sli4_unregister_fcf - Unregister currently registered FCF record
  * @phba: Pointer to hba context object.
  *
  * This function issues synchronous unregister FCF mailbox command to HBA to
  * unregister the currently registered FCF record. The driver does not reset
  * the driver FCF usage state flags.
  *
  * Return 0 if successfully issued, none-zero otherwise.
  */
 int
 lpfc_sli4_unregister_fcf(struct lpfc_hba *phba)
 {
     LPFC_MBOXQ_t *mbox;
     int rc;
 
     mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
     if (!mbox) {
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "2551 UNREG_FCFI mbox allocation failed"
                 "HBA state x%x\n", phba->pport->port_state);
         return -ENOMEM;
     }
     lpfc_unreg_fcfi(mbox, phba->fcf.fcfi);
     mbox->vport = phba->pport;
     mbox->mbox_cmpl = lpfc_unregister_fcfi_cmpl;
     rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
 
     if (rc == MBX_NOT_FINISHED) {
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "2552 Unregister FCFI command failed rc x%x "
                 "HBA state x%x\n",
                 rc, phba->pport->port_state);
         return -EINVAL;
     }
     return 0;
 }
 
 /**
  * lpfc_unregister_fcf_rescan - Unregister currently registered fcf and rescan
  * @phba: Pointer to hba context object.
  *
  * This function unregisters the currently reigstered FCF. This function
  * also tries to find another FCF for discovery by rescan the HBA FCF table.
  */
 void
 lpfc_unregister_fcf_rescan(struct lpfc_hba *phba)
 {
     int rc;
 
     /* Preparation for unregistering fcf */
     rc = lpfc_unregister_fcf_prep(phba);
     if (rc) {
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "2748 Failed to prepare for unregistering "
                 "HBA's FCF record: rc=%d\n", rc);
         return;
     }
 
     /* Now, unregister FCF record and reset HBA FCF state */
     rc = lpfc_sli4_unregister_fcf(phba);
     if (rc)
         return;
     /* Reset HBA FCF states after successful unregister FCF */
     phba->fcf.fcf_flag = 0;
     phba->fcf.current_rec.flag = 0;
 
     /*
      * If driver is not unloading, check if there is any other
      * FCF record that can be used for discovery.
      */
     if ((phba->pport->load_flag & FC_UNLOADING) ||
         (phba->link_state < LPFC_LINK_UP))
         return;
 
     /* This is considered as the initial FCF discovery scan */
     spin_lock_irq(&phba->hbalock);
     phba->fcf.fcf_flag |= FCF_INIT_DISC;
     spin_unlock_irq(&phba->hbalock);
 
     /* Reset FCF roundrobin bmask for new discovery */
     lpfc_sli4_clear_fcf_rr_bmask(phba);
 
     rc = lpfc_sli4_fcf_scan_read_fcf_rec(phba, LPFC_FCOE_FCF_GET_FIRST);
 
     if (rc) {
         spin_lock_irq(&phba->hbalock);
         phba->fcf.fcf_flag &= ~FCF_INIT_DISC;
         spin_unlock_irq(&phba->hbalock);
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "2553 lpfc_unregister_unused_fcf failed "
                 "to read FCF record HBA state x%x\n",
                 phba->pport->port_state);
     }
 }
 
 /**
  * lpfc_unregister_fcf - Unregister the currently registered fcf record
  * @phba: Pointer to hba context object.
  *
  * This function just unregisters the currently reigstered FCF. It does not
  * try to find another FCF for discovery.
  */
 void
 lpfc_unregister_fcf(struct lpfc_hba *phba)
 {
     int rc;
 
     /* Preparation for unregistering fcf */
     rc = lpfc_unregister_fcf_prep(phba);
     if (rc) {
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "2749 Failed to prepare for unregistering "
                 "HBA's FCF record: rc=%d\n", rc);
         return;
     }
 
     /* Now, unregister FCF record and reset HBA FCF state */
     rc = lpfc_sli4_unregister_fcf(phba);
     if (rc)
         return;
     /* Set proper HBA FCF states after successful unregister FCF */
     spin_lock_irq(&phba->hbalock);
     phba->fcf.fcf_flag &= ~FCF_REGISTERED;
     spin_unlock_irq(&phba->hbalock);
 }
 
 /**
  * lpfc_unregister_unused_fcf - Unregister FCF if all devices are disconnected.
  * @phba: Pointer to hba context object.
  *
  * This function check if there are any connected remote port for the FCF and
  * if all the devices are disconnected, this function unregister FCFI.
  * This function also tries to use another FCF for discovery.
  */
 void
 lpfc_unregister_unused_fcf(struct lpfc_hba *phba)
 {
     /*
      * If HBA is not running in FIP mode, if HBA does not support
      * FCoE, if FCF discovery is ongoing, or if FCF has not been
      * registered, do nothing.
      */
     spin_lock_irq(&phba->hbalock);
     if (!(phba->hba_flag & HBA_FCOE_MODE) ||
         !(phba->fcf.fcf_flag & FCF_REGISTERED) ||
         !(phba->hba_flag & HBA_FIP_SUPPORT) ||
         (phba->fcf.fcf_flag & FCF_DISCOVERY) ||
         (phba->pport->port_state == LPFC_FLOGI)) {
         spin_unlock_irq(&phba->hbalock);
         return;
     }
     spin_unlock_irq(&phba->hbalock);
 
     if (lpfc_fcf_inuse(phba))
         return;
 
     lpfc_unregister_fcf_rescan(phba);
 }
 
 /**
  * lpfc_read_fcf_conn_tbl - Create driver FCF connection table.
  * @phba: Pointer to hba context object.
  * @buff: Buffer containing the FCF connection table as in the config
  *         region.
  * This function create driver data structure for the FCF connection
  * record table read from config region 23.
  */
 static void
 lpfc_read_fcf_conn_tbl(struct lpfc_hba *phba,
     uint8_t *buff)
 {
     struct lpfc_fcf_conn_entry *conn_entry, *next_conn_entry;
     struct lpfc_fcf_conn_hdr *conn_hdr;
     struct lpfc_fcf_conn_rec *conn_rec;
     uint32_t record_count;
     int i;
 
     /* Free the current connect table */
     list_for_each_entry_safe(conn_entry, next_conn_entry,
         &phba->fcf_conn_rec_list, list) {
         list_del_init(&conn_entry->list);
         kfree(conn_entry);
     }
 
     conn_hdr = (struct lpfc_fcf_conn_hdr *) buff;
     record_count = conn_hdr->length * sizeof(uint32_t)/
         sizeof(struct lpfc_fcf_conn_rec);
 
     conn_rec = (struct lpfc_fcf_conn_rec *)
         (buff + sizeof(struct lpfc_fcf_conn_hdr));
 
     for (i = 0; i < record_count; i++) {
         if (!(conn_rec[i].flags & FCFCNCT_VALID))
             continue;
         conn_entry = kzalloc(sizeof(struct lpfc_fcf_conn_entry),
             GFP_KERNEL);
         if (!conn_entry) {
             lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                     "2566 Failed to allocate connection"
                     " table entry\n");
             return;
         }
 
         memcpy(&conn_entry->conn_rec, &conn_rec[i],
             sizeof(struct lpfc_fcf_conn_rec));
         list_add_tail(&conn_entry->list,
             &phba->fcf_conn_rec_list);
     }
 
     if (!list_empty(&phba->fcf_conn_rec_list)) {
         i = 0;
         list_for_each_entry(conn_entry, &phba->fcf_conn_rec_list,
                     list) {
             conn_rec = &conn_entry->conn_rec;
             lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
                     "3345 FCF connection list rec[%02d]: "
                     "flags:x%04x, vtag:x%04x, "
                     "fabric_name:x%02x:%02x:%02x:%02x:"
                     "%02x:%02x:%02x:%02x, "
                     "switch_name:x%02x:%02x:%02x:%02x:"
                     "%02x:%02x:%02x:%02x\n", i++,
                     conn_rec->flags, conn_rec->vlan_tag,
                     conn_rec->fabric_name[0],
                     conn_rec->fabric_name[1],
                     conn_rec->fabric_name[2],
                     conn_rec->fabric_name[3],
                     conn_rec->fabric_name[4],
                     conn_rec->fabric_name[5],
                     conn_rec->fabric_name[6],
                     conn_rec->fabric_name[7],
                     conn_rec->switch_name[0],
                     conn_rec->switch_name[1],
                     conn_rec->switch_name[2],
                     conn_rec->switch_name[3],
                     conn_rec->switch_name[4],
                     conn_rec->switch_name[5],
                     conn_rec->switch_name[6],
                     conn_rec->switch_name[7]);
         }
     }
 }
 
 /**
  * lpfc_read_fcoe_param - Read FCoe parameters from conf region..
  * @phba: Pointer to hba context object.
  * @buff: Buffer containing the FCoE parameter data structure.
  *
  *  This function update driver data structure with config
  *  parameters read from config region 23.
  */
 static void
 lpfc_read_fcoe_param(struct lpfc_hba *phba,
             uint8_t *buff)
 {
     struct lpfc_fip_param_hdr *fcoe_param_hdr;
     struct lpfc_fcoe_params *fcoe_param;
 
     fcoe_param_hdr = (struct lpfc_fip_param_hdr *)
         buff;
     fcoe_param = (struct lpfc_fcoe_params *)
         (buff + sizeof(struct lpfc_fip_param_hdr));
 
     if ((fcoe_param_hdr->parm_version != FIPP_VERSION) ||
         (fcoe_param_hdr->length != FCOE_PARAM_LENGTH))
         return;
 
     if (fcoe_param_hdr->parm_flags & FIPP_VLAN_VALID) {
         phba->valid_vlan = 1;
         phba->vlan_id = le16_to_cpu(fcoe_param->vlan_tag) &
             0xFFF;
     }
 
     phba->fc_map[0] = fcoe_param->fc_map[0];
     phba->fc_map[1] = fcoe_param->fc_map[1];
     phba->fc_map[2] = fcoe_param->fc_map[2];
     return;
 }
 
 /**
  * lpfc_get_rec_conf23 - Get a record type in config region data.
  * @buff: Buffer containing config region 23 data.
  * @size: Size of the data buffer.
  * @rec_type: Record type to be searched.
  *
  * This function searches config region data to find the beginning
  * of the record specified by record_type. If record found, this
  * function return pointer to the record else return NULL.
  */
 static uint8_t *
 lpfc_get_rec_conf23(uint8_t *buff, uint32_t size, uint8_t rec_type)
 {
     uint32_t offset = 0, rec_length;
 
     if ((buff[0] == LPFC_REGION23_LAST_REC) ||
         (size < sizeof(uint32_t)))
         return NULL;
 
     rec_length = buff[offset + 1];
 
     /*
      * One TLV record has one word header and number of data words
      * specified in the rec_length field of the record header.
      */
     while ((offset + rec_length * sizeof(uint32_t) + sizeof(uint32_t))
         <= size) {
         if (buff[offset] == rec_type)
             return &buff[offset];
 
         if (buff[offset] == LPFC_REGION23_LAST_REC)
             return NULL;
 
         offset += rec_length * sizeof(uint32_t) + sizeof(uint32_t);
         rec_length = buff[offset + 1];
     }
     return NULL;
 }
 
 /**
  * lpfc_parse_fcoe_conf - Parse FCoE config data read from config region 23.
  * @phba: Pointer to lpfc_hba data structure.
  * @buff: Buffer containing config region 23 data.
  * @size: Size of the data buffer.
  *
  * This function parses the FCoE config parameters in config region 23 and
  * populate driver data structure with the parameters.
  */
 void
 lpfc_parse_fcoe_conf(struct lpfc_hba *phba,
         uint8_t *buff,
         uint32_t size)
 {
     uint32_t offset = 0;
     uint8_t *rec_ptr;
 
     /*
      * If data size is less than 2 words signature and version cannot be
      * verified.
      */
     if (size < 2*sizeof(uint32_t))
         return;
 
     /* Check the region signature first */
     if (memcmp(buff, LPFC_REGION23_SIGNATURE, 4)) {
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
             "2567 Config region 23 has bad signature\n");
         return;
     }
 
     offset += 4;
 
     /* Check the data structure version */
     if (buff[offset] != LPFC_REGION23_VERSION) {
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "2568 Config region 23 has bad version\n");
         return;
     }
     offset += 4;
 
     /* Read FCoE param record */
     rec_ptr = lpfc_get_rec_conf23(&buff[offset],
             size - offset, FCOE_PARAM_TYPE);
     if (rec_ptr)
         lpfc_read_fcoe_param(phba, rec_ptr);
 
     /* Read FCF connection table */
     rec_ptr = lpfc_get_rec_conf23(&buff[offset],
         size - offset, FCOE_CONN_TBL_TYPE);
     if (rec_ptr)
         lpfc_read_fcf_conn_tbl(phba, rec_ptr);
 
 }