Adding upstream version 6.6.15.upstream/6.6.15

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 7319 insertions, 0 deletions

diff --git a/drivers/scsi/lpfc/lpfc_hbadisc.c b/drivers/scsi/lpfc/lpfc_hbadisc.c
new file mode 100644
index 0000000000..5154eeaee0
--- /dev/null
+++ b/drivers/scsi/lpfc/lpfc_hbadisc.c
@@ -0,0 +1,7319 @@
+/*******************************************************************
+ * This file is part of the Emulex Linux Device Driver for         *
+ * Fibre Channel Host Bus Adapters.                                *
+ * Copyright (C) 2017-2023 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 %u 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. */
+	if (vport->load_flag & FC_UNLOADING) {
+		spin_lock_irqsave(&ndlp->lock, iflags);
+		ndlp->rport = NULL;
+
+		/* The scsi_transport is done with the rport so lpfc cannot
+		 * call to unregister. Remove the scsi transport reference
+		 * and clean up the SCSI transport node details.
+		 */
+		if (ndlp->fc4_xpt_flags & (NLP_XPT_REGD | SCSI_XPT_REGD)) {
+			ndlp->fc4_xpt_flags &= ~SCSI_XPT_REGD;
+
+			/* NVME transport-registered rports need the
+			 * NLP_XPT_REGD flag to complete an unregister.
+			 */
+			if (!(ndlp->fc4_xpt_flags & NVME_XPT_REGD))
+				ndlp->fc4_xpt_flags &= ~NLP_XPT_REGD;
+			spin_unlock_irqrestore(&ndlp->lock, iflags);
+			lpfc_nlp_put(ndlp);
+			spin_lock_irqsave(&ndlp->lock, iflags);
+		}
+
+		/* Only 1 thread can drop the initial node reference.  If
+		 * another thread has set NLP_DROPPED, this thread is done.
+		 */
+		if (!(ndlp->fc4_xpt_flags & NVME_XPT_REGD) &&
+		    !(ndlp->nlp_flag & NLP_DROPPED)) {
+			ndlp->nlp_flag |= NLP_DROPPED;
+			spin_unlock_irqrestore(&ndlp->lock, iflags);
+			lpfc_nlp_put(ndlp);
+			return;
+		}
+
+		spin_unlock_irqrestore(&ndlp->lock, iflags);
+		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;
+
+	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);
+
+		spin_lock_irqsave(&ndlp->lock, iflags);
+		ndlp->nlp_flag &= ~NLP_IN_DEV_LOSS;
+		spin_unlock_irqrestore(&ndlp->lock, iflags);
+		return fcf_inuse;
+	}
+
+	/* Fabric nodes are done. */
+	if (ndlp->nlp_type & NLP_FABRIC) {
+		spin_lock_irqsave(&ndlp->lock, iflags);
+
+		/* The driver has to account for a race between any fabric
+		 * node that's in recovery when dev_loss_tmo expires. When this
+		 * happens, the driver has to allow node recovery.
+		 */
+		switch (ndlp->nlp_DID) {
+		case Fabric_DID:
+			fc_vport = vport->fc_vport;
+			if (fc_vport) {
+				/* NPIV path. */
+				if (fc_vport->vport_state ==
+				    FC_VPORT_INITIALIZING)
+					recovering = true;
+			} else {
+				/* Physical port path. */
+				if (phba->hba_flag & HBA_FLOGI_OUTSTANDING)
+					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;
+		default:
+			/* Ensure the nlp_DID at least has the correct prefix.
+			 * The fabric domain controller's last three nibbles
+			 * vary so we handle it in the default case.
+			 */
+			if (ndlp->nlp_DID & Fabric_DID_MASK) {
+				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;
+		}
+
+		spin_lock_irqsave(&ndlp->lock, iflags);
+		ndlp->nlp_flag &= ~NLP_IN_DEV_LOSS;
+		spin_unlock_irqrestore(&ndlp->lock, iflags);
+		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);
+	}
+	spin_lock_irqsave(&ndlp->lock, iflags);
+	ndlp->nlp_flag &= ~NLP_IN_DEV_LOSS;
+	spin_unlock_irqrestore(&ndlp->lock, iflags);
+
+	/* 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 ((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->trunk_link.phy_lnk_speed =
+						LPFC_LINK_SPEED_UNKNOWN;
+			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);
+	if (phba->defer_flogi_acc_flag)
+		vport->fc_flag &= ~(FC_ABORT_DISCOVERY | FC_RSCN_MODE |
+				    FC_NLP_MORE | FC_RSCN_DISCOVERY);
+	else
+		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);
+
+	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, a 16-bit random number returned from get_random_u16() is
+ * 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 = get_random_u16();
+
+	/* 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 round robin selection 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 = LPFC_FCOE_NULL_VID;
+	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 =  LPFC_FCOE_NULL_VID;
+	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);
+
+		if (phba->lmt & LMT_64Gb)
+			lpfc_read_lds_params(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 and forces the removal of the last node
+		 * reference.
+		 */
+		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_put(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 Issue EDC status x%x Data x%x\n",
+					rc, phba->cgn_init_reg_signal);
+		} else if (phba->lmt & LMT_64Gb) {
+			/* may send link fault capability descriptor */
+			lpfc_issue_els_edc(vport, 0);
+		} 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;
+
+	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_ELS | LOG_NODE | LOG_DISCOVERY,
+				 "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_ELS | LOG_NODE | LOG_DISCOVERY,
+				 "1999 %s NDLP in devloss x%px DID x%x FLG x%x"
+				 " XPT x%x refcnt %u\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 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])
+		strscpy(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 when lpfc wants to remove the "last" lpfc_nlp_put() to
+	 * release the ndlp from the vport when conditions are correct.
+	 */
+	if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
+		return;
+	lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNUSED_NODE);
+	if (vport->phba->sli_rev == LPFC_SLI_REV4) {
+		lpfc_cleanup_vports_rrqs(vport, ndlp);
+		lpfc_unreg_rpi(vport, ndlp);
+	}
+
+	/* NLP_DROPPED means another thread already removed the initial
+	 * reference from lpfc_nlp_init.  If set, don't drop it again and
+	 * introduce an imbalance.
+	 */
+	spin_lock_irq(&ndlp->lock);
+	if (!(ndlp->nlp_flag & NLP_DROPPED)) {
+		ndlp->nlp_flag |= NLP_DROPPED;
+		spin_unlock_irq(&ndlp->lock);
+		lpfc_nlp_put(ndlp);
+		return;
+	}
+	spin_unlock_irq(&ndlp->lock);
+}
+
+/*
+ * 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;
+
+			if (ndlp->nlp_state > NLP_STE_UNUSED_NODE &&
+			    ndlp->nlp_state < NLP_STE_PRLI_ISSUE) {
+				lpfc_disc_state_machine(vport, ndlp, NULL,
+							NLP_EVT_DEVICE_RECOVERY);
+			}
+
+			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 */
+	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;
+}
+
+/**
+ * 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 */
+	spin_lock_irq(&phba->hbalock);
+	phba->fcf.fcf_flag = 0;
+	spin_unlock_irq(&phba->hbalock);
+	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);
+
+}
+
+/*
+ * lpfc_error_lost_link - IO failure from link event or FW reset check.
+ *
+ * @vport: Pointer to lpfc_vport data structure.
+ * @ulp_status: IO completion status.
+ * @ulp_word4: Reason code for the ulp_status.
+ *
+ * This function evaluates the ulp_status and ulp_word4 values
+ * for specific error values that indicate an internal link fault
+ * or fw reset event for the completing IO.  Callers require this
+ * common data to decide next steps on the IO.
+ *
+ * Return:
+ * false - No link or reset error occurred.
+ * true - A link or reset error occurred.
+ */
+bool
+lpfc_error_lost_link(struct lpfc_vport *vport, u32 ulp_status, u32 ulp_word4)
+{
+	/* Mask off the extra port data to get just the reason code. */
+	u32 rsn_code = IOERR_PARAM_MASK & ulp_word4;
+
+	if (ulp_status == IOSTAT_LOCAL_REJECT &&
+	    (rsn_code == IOERR_SLI_ABORTED ||
+	     rsn_code == IOERR_LINK_DOWN ||
+	     rsn_code == IOERR_SLI_DOWN)) {
+		lpfc_printf_vlog(vport, KERN_WARNING, LOG_SLI | LOG_ELS,
+				 "0408 Report link error true: <x%x:x%x>\n",
+				 ulp_status, ulp_word4);
+		return true;
+	}
+
+	return false;
+}