Initial import

1 files changed, 2577 insertions, 0 deletions

diff --git a/drivers/scsi/lpfc/lpfc_nportdisc.c b/drivers/scsi/lpfc/lpfc_nportdisc.c
new file mode 100644
index 000000000..4cb9882af
--- /dev/null
+++ b/drivers/scsi/lpfc/lpfc_nportdisc.c
@@ -0,0 +1,2577 @@
+ /*******************************************************************
+ * This file is part of the Emulex Linux Device Driver for         *
+ * Fibre Channel Host Bus Adapters.                                *
+ * Copyright (C) 2004-2015 Emulex.  All rights reserved.           *
+ * EMULEX and SLI are trademarks of Emulex.                        *
+ * www.emulex.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/pci.h>
+#include <linux/slab.h>
+#include <linux/interrupt.h>
+
+#include <scsi/scsi.h>
+#include <scsi/scsi_device.h>
+#include <scsi/scsi_host.h>
+#include <scsi/scsi_transport_fc.h>
+
+#include "lpfc_hw4.h"
+#include "lpfc_hw.h"
+#include "lpfc_sli.h"
+#include "lpfc_sli4.h"
+#include "lpfc_nl.h"
+#include "lpfc_disc.h"
+#include "lpfc_scsi.h"
+#include "lpfc.h"
+#include "lpfc_logmsg.h"
+#include "lpfc_crtn.h"
+#include "lpfc_vport.h"
+#include "lpfc_debugfs.h"
+
+
+/* Called to verify a rcv'ed ADISC was intended for us. */
+static int
+lpfc_check_adisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
+		 struct lpfc_name *nn, struct lpfc_name *pn)
+{
+	/* First, we MUST have a RPI registered */
+	if (!(ndlp->nlp_flag & NLP_RPI_REGISTERED))
+		return 0;
+
+	/* Compare the ADISC rsp WWNN / WWPN matches our internal node
+	 * table entry for that node.
+	 */
+	if (memcmp(nn, &ndlp->nlp_nodename, sizeof (struct lpfc_name)))
+		return 0;
+
+	if (memcmp(pn, &ndlp->nlp_portname, sizeof (struct lpfc_name)))
+		return 0;
+
+	/* we match, return success */
+	return 1;
+}
+
+int
+lpfc_check_sparm(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
+		 struct serv_parm *sp, uint32_t class, int flogi)
+{
+	volatile struct serv_parm *hsp = &vport->fc_sparam;
+	uint16_t hsp_value, ssp_value = 0;
+
+	/*
+	 * The receive data field size and buffer-to-buffer receive data field
+	 * size entries are 16 bits but are represented as two 8-bit fields in
+	 * the driver data structure to account for rsvd bits and other control
+	 * bits.  Reconstruct and compare the fields as a 16-bit values before
+	 * correcting the byte values.
+	 */
+	if (sp->cls1.classValid) {
+		if (!flogi) {
+			hsp_value = ((hsp->cls1.rcvDataSizeMsb << 8) |
+				     hsp->cls1.rcvDataSizeLsb);
+			ssp_value = ((sp->cls1.rcvDataSizeMsb << 8) |
+				     sp->cls1.rcvDataSizeLsb);
+			if (!ssp_value)
+				goto bad_service_param;
+			if (ssp_value > hsp_value) {
+				sp->cls1.rcvDataSizeLsb =
+					hsp->cls1.rcvDataSizeLsb;
+				sp->cls1.rcvDataSizeMsb =
+					hsp->cls1.rcvDataSizeMsb;
+			}
+		}
+	} else if (class == CLASS1)
+		goto bad_service_param;
+	if (sp->cls2.classValid) {
+		if (!flogi) {
+			hsp_value = ((hsp->cls2.rcvDataSizeMsb << 8) |
+				     hsp->cls2.rcvDataSizeLsb);
+			ssp_value = ((sp->cls2.rcvDataSizeMsb << 8) |
+				     sp->cls2.rcvDataSizeLsb);
+			if (!ssp_value)
+				goto bad_service_param;
+			if (ssp_value > hsp_value) {
+				sp->cls2.rcvDataSizeLsb =
+					hsp->cls2.rcvDataSizeLsb;
+				sp->cls2.rcvDataSizeMsb =
+					hsp->cls2.rcvDataSizeMsb;
+			}
+		}
+	} else if (class == CLASS2)
+		goto bad_service_param;
+	if (sp->cls3.classValid) {
+		if (!flogi) {
+			hsp_value = ((hsp->cls3.rcvDataSizeMsb << 8) |
+				     hsp->cls3.rcvDataSizeLsb);
+			ssp_value = ((sp->cls3.rcvDataSizeMsb << 8) |
+				     sp->cls3.rcvDataSizeLsb);
+			if (!ssp_value)
+				goto bad_service_param;
+			if (ssp_value > hsp_value) {
+				sp->cls3.rcvDataSizeLsb =
+					hsp->cls3.rcvDataSizeLsb;
+				sp->cls3.rcvDataSizeMsb =
+					hsp->cls3.rcvDataSizeMsb;
+			}
+		}
+	} else if (class == CLASS3)
+		goto bad_service_param;
+
+	/*
+	 * Preserve the upper four bits of the MSB from the PLOGI response.
+	 * These bits contain the Buffer-to-Buffer State Change Number
+	 * from the target and need to be passed to the FW.
+	 */
+	hsp_value = (hsp->cmn.bbRcvSizeMsb << 8) | hsp->cmn.bbRcvSizeLsb;
+	ssp_value = (sp->cmn.bbRcvSizeMsb << 8) | sp->cmn.bbRcvSizeLsb;
+	if (ssp_value > hsp_value) {
+		sp->cmn.bbRcvSizeLsb = hsp->cmn.bbRcvSizeLsb;
+		sp->cmn.bbRcvSizeMsb = (sp->cmn.bbRcvSizeMsb & 0xF0) |
+				       (hsp->cmn.bbRcvSizeMsb & 0x0F);
+	}
+
+	memcpy(&ndlp->nlp_nodename, &sp->nodeName, sizeof (struct lpfc_name));
+	memcpy(&ndlp->nlp_portname, &sp->portName, sizeof (struct lpfc_name));
+	return 1;
+bad_service_param:
+	lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
+			 "0207 Device %x "
+			 "(%02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x) sent "
+			 "invalid service parameters.  Ignoring device.\n",
+			 ndlp->nlp_DID,
+			 sp->nodeName.u.wwn[0], sp->nodeName.u.wwn[1],
+			 sp->nodeName.u.wwn[2], sp->nodeName.u.wwn[3],
+			 sp->nodeName.u.wwn[4], sp->nodeName.u.wwn[5],
+			 sp->nodeName.u.wwn[6], sp->nodeName.u.wwn[7]);
+	return 0;
+}
+
+static void *
+lpfc_check_elscmpl_iocb(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
+			struct lpfc_iocbq *rspiocb)
+{
+	struct lpfc_dmabuf *pcmd, *prsp;
+	uint32_t *lp;
+	void     *ptr = NULL;
+	IOCB_t   *irsp;
+
+	irsp = &rspiocb->iocb;
+	pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
+
+	/* For lpfc_els_abort, context2 could be zero'ed to delay
+	 * freeing associated memory till after ABTS completes.
+	 */
+	if (pcmd) {
+		prsp =  list_get_first(&pcmd->list, struct lpfc_dmabuf,
+				       list);
+		if (prsp) {
+			lp = (uint32_t *) prsp->virt;
+			ptr = (void *)((uint8_t *)lp + sizeof(uint32_t));
+		}
+	} else {
+		/* Force ulpStatus error since we are returning NULL ptr */
+		if (!(irsp->ulpStatus)) {
+			irsp->ulpStatus = IOSTAT_LOCAL_REJECT;
+			irsp->un.ulpWord[4] = IOERR_SLI_ABORTED;
+		}
+		ptr = NULL;
+	}
+	return ptr;
+}
+
+
+
+/*
+ * Free resources / clean up outstanding I/Os
+ * associated with a LPFC_NODELIST entry. This
+ * routine effectively results in a "software abort".
+ */
+int
+lpfc_els_abort(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
+{
+	LIST_HEAD(abort_list);
+	struct lpfc_sli  *psli = &phba->sli;
+	struct lpfc_sli_ring *pring = &psli->ring[LPFC_ELS_RING];
+	struct lpfc_iocbq *iocb, *next_iocb;
+
+	/* Abort outstanding I/O on NPort <nlp_DID> */
+	lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_DISCOVERY,
+			 "2819 Abort outstanding I/O on NPort x%x "
+			 "Data: x%x x%x x%x\n",
+			 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
+			 ndlp->nlp_rpi);
+	/* Clean up all fabric IOs first.*/
+	lpfc_fabric_abort_nport(ndlp);
+
+	/*
+	 * Lock the ELS ring txcmplq for SLI3/SLI4 and build a local list
+	 * of all ELS IOs that need an ABTS.  The IOs need to stay on the
+	 * txcmplq so that the abort operation completes them successfully.
+	 */
+	spin_lock_irq(&phba->hbalock);
+	if (phba->sli_rev == LPFC_SLI_REV4)
+		spin_lock(&pring->ring_lock);
+	list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) {
+	/* Add to abort_list on on NDLP match. */
+		if (lpfc_check_sli_ndlp(phba, pring, iocb, ndlp))
+			list_add_tail(&iocb->dlist, &abort_list);
+	}
+	if (phba->sli_rev == LPFC_SLI_REV4)
+		spin_unlock(&pring->ring_lock);
+	spin_unlock_irq(&phba->hbalock);
+
+	/* Abort the targeted IOs and remove them from the abort list. */
+	list_for_each_entry_safe(iocb, next_iocb, &abort_list, dlist) {
+			spin_lock_irq(&phba->hbalock);
+			list_del_init(&iocb->dlist);
+			lpfc_sli_issue_abort_iotag(phba, pring, iocb);
+			spin_unlock_irq(&phba->hbalock);
+	}
+
+	INIT_LIST_HEAD(&abort_list);
+
+	/* Now process the txq */
+	spin_lock_irq(&phba->hbalock);
+	if (phba->sli_rev == LPFC_SLI_REV4)
+		spin_lock(&pring->ring_lock);
+
+	list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
+		/* Check to see if iocb matches the nport we are looking for */
+		if (lpfc_check_sli_ndlp(phba, pring, iocb, ndlp)) {
+			list_del_init(&iocb->list);
+			list_add_tail(&iocb->list, &abort_list);
+		}
+	}
+
+	if (phba->sli_rev == LPFC_SLI_REV4)
+		spin_unlock(&pring->ring_lock);
+	spin_unlock_irq(&phba->hbalock);
+
+	/* Cancel all the IOCBs from the completions list */
+	lpfc_sli_cancel_iocbs(phba, &abort_list,
+			      IOSTAT_LOCAL_REJECT, IOERR_SLI_ABORTED);
+
+	lpfc_cancel_retry_delay_tmo(phba->pport, ndlp);
+	return 0;
+}
+
+static int
+lpfc_rcv_plogi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
+	       struct lpfc_iocbq *cmdiocb)
+{
+	struct Scsi_Host   *shost = lpfc_shost_from_vport(vport);
+	struct lpfc_hba    *phba = vport->phba;
+	struct lpfc_dmabuf *pcmd;
+	uint64_t nlp_portwwn = 0;
+	uint32_t *lp;
+	IOCB_t *icmd;
+	struct serv_parm *sp;
+	LPFC_MBOXQ_t *mbox;
+	struct ls_rjt stat;
+	int rc;
+
+	memset(&stat, 0, sizeof (struct ls_rjt));
+	if (vport->port_state <= LPFC_FDISC) {
+		/* Before responding to PLOGI, check for pt2pt mode.
+		 * If we are pt2pt, with an outstanding FLOGI, abort
+		 * the FLOGI and resend it first.
+		 */
+		if (vport->fc_flag & FC_PT2PT) {
+			 lpfc_els_abort_flogi(phba);
+		        if (!(vport->fc_flag & FC_PT2PT_PLOGI)) {
+				/* If the other side is supposed to initiate
+				 * the PLOGI anyway, just ACC it now and
+				 * move on with discovery.
+				 */
+				phba->fc_edtov = FF_DEF_EDTOV;
+				phba->fc_ratov = FF_DEF_RATOV;
+				/* Start discovery - this should just do
+				   CLEAR_LA */
+				lpfc_disc_start(vport);
+			} else
+				lpfc_initial_flogi(vport);
+		} else {
+			stat.un.b.lsRjtRsnCode = LSRJT_LOGICAL_BSY;
+			stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
+			lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb,
+					    ndlp, NULL);
+			return 0;
+		}
+	}
+	pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
+	lp = (uint32_t *) pcmd->virt;
+	sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t));
+	if (wwn_to_u64(sp->portName.u.wwn) == 0) {
+		lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
+				 "0140 PLOGI Reject: invalid nname\n");
+		stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
+		stat.un.b.lsRjtRsnCodeExp = LSEXP_INVALID_PNAME;
+		lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
+			NULL);
+		return 0;
+	}
+	if (wwn_to_u64(sp->nodeName.u.wwn) == 0) {
+		lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
+				 "0141 PLOGI Reject: invalid pname\n");
+		stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
+		stat.un.b.lsRjtRsnCodeExp = LSEXP_INVALID_NNAME;
+		lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
+			NULL);
+		return 0;
+	}
+
+	nlp_portwwn = wwn_to_u64(ndlp->nlp_portname.u.wwn);
+	if ((lpfc_check_sparm(vport, ndlp, sp, CLASS3, 0) == 0)) {
+		/* Reject this request because invalid parameters */
+		stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
+		stat.un.b.lsRjtRsnCodeExp = LSEXP_SPARM_OPTIONS;
+		lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
+			NULL);
+		return 0;
+	}
+	icmd = &cmdiocb->iocb;
+
+	/* PLOGI chkparm OK */
+	lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
+			 "0114 PLOGI chkparm OK Data: x%x x%x x%x "
+			 "x%x x%x x%x\n",
+			 ndlp->nlp_DID, ndlp->nlp_state, ndlp->nlp_flag,
+			 ndlp->nlp_rpi, vport->port_state,
+			 vport->fc_flag);
+
+	if (vport->cfg_fcp_class == 2 && sp->cls2.classValid)
+		ndlp->nlp_fcp_info |= CLASS2;
+	else
+		ndlp->nlp_fcp_info |= CLASS3;
+
+	ndlp->nlp_class_sup = 0;
+	if (sp->cls1.classValid)
+		ndlp->nlp_class_sup |= FC_COS_CLASS1;
+	if (sp->cls2.classValid)
+		ndlp->nlp_class_sup |= FC_COS_CLASS2;
+	if (sp->cls3.classValid)
+		ndlp->nlp_class_sup |= FC_COS_CLASS3;
+	if (sp->cls4.classValid)
+		ndlp->nlp_class_sup |= FC_COS_CLASS4;
+	ndlp->nlp_maxframe =
+		((sp->cmn.bbRcvSizeMsb & 0x0F) << 8) | sp->cmn.bbRcvSizeLsb;
+
+	/* if already logged in, do implicit logout */
+	switch (ndlp->nlp_state) {
+	case  NLP_STE_NPR_NODE:
+		if (!(ndlp->nlp_flag & NLP_NPR_ADISC))
+			break;
+	case  NLP_STE_REG_LOGIN_ISSUE:
+	case  NLP_STE_PRLI_ISSUE:
+	case  NLP_STE_UNMAPPED_NODE:
+	case  NLP_STE_MAPPED_NODE:
+		/* lpfc_plogi_confirm_nport skips fabric did, handle it here */
+		if (!(ndlp->nlp_type & NLP_FABRIC)) {
+			lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb,
+					 ndlp, NULL);
+			return 1;
+		}
+		if (nlp_portwwn != 0 &&
+		    nlp_portwwn != wwn_to_u64(sp->portName.u.wwn))
+			lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
+					 "0143 PLOGI recv'd from DID: x%x "
+					 "WWPN changed: old %llx new %llx\n",
+					 ndlp->nlp_DID,
+					 (unsigned long long)nlp_portwwn,
+					 (unsigned long long)
+					 wwn_to_u64(sp->portName.u.wwn));
+
+		ndlp->nlp_prev_state = ndlp->nlp_state;
+		/* rport needs to be unregistered first */
+		lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
+		break;
+	}
+
+	/* Check for Nport to NPort pt2pt protocol */
+	if ((vport->fc_flag & FC_PT2PT) &&
+	    !(vport->fc_flag & FC_PT2PT_PLOGI)) {
+
+		/* rcv'ed PLOGI decides what our NPortId will be */
+		vport->fc_myDID = icmd->un.rcvels.parmRo;
+		mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
+		if (mbox == NULL)
+			goto out;
+		lpfc_config_link(phba, mbox);
+		mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
+		mbox->vport = vport;
+		rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
+		if (rc == MBX_NOT_FINISHED) {
+			mempool_free(mbox, phba->mbox_mem_pool);
+			goto out;
+		}
+		/*
+		 * For SLI4, the VFI/VPI are registered AFTER the
+		 * Nport with the higher WWPN sends us a PLOGI with
+		 * our assigned NPortId.
+		 */
+		if (phba->sli_rev == LPFC_SLI_REV4)
+			lpfc_issue_reg_vfi(vport);
+
+		lpfc_can_disctmo(vport);
+	}
+	mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
+	if (!mbox)
+		goto out;
+
+	/* Registering an existing RPI behaves differently for SLI3 vs SLI4 */
+	if (phba->sli_rev == LPFC_SLI_REV4)
+		lpfc_unreg_rpi(vport, ndlp);
+
+	rc = lpfc_reg_rpi(phba, vport->vpi, icmd->un.rcvels.remoteID,
+			    (uint8_t *) sp, mbox, ndlp->nlp_rpi);
+	if (rc) {
+		mempool_free(mbox, phba->mbox_mem_pool);
+		goto out;
+	}
+
+	/* ACC PLOGI rsp command needs to execute first,
+	 * queue this mbox command to be processed later.
+	 */
+	mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login;
+	/*
+	 * mbox->context2 = lpfc_nlp_get(ndlp) deferred until mailbox
+	 * command issued in lpfc_cmpl_els_acc().
+	 */
+	mbox->vport = vport;
+	spin_lock_irq(shost->host_lock);
+	ndlp->nlp_flag |= (NLP_ACC_REGLOGIN | NLP_RCV_PLOGI);
+	spin_unlock_irq(shost->host_lock);
+
+	/*
+	 * If there is an outstanding PLOGI issued, abort it before
+	 * sending ACC rsp for received PLOGI. If pending plogi
+	 * is not canceled here, the plogi will be rejected by
+	 * remote port and will be retried. On a configuration with
+	 * single discovery thread, this will cause a huge delay in
+	 * discovery. Also this will cause multiple state machines
+	 * running in parallel for this node.
+	 */
+	if (ndlp->nlp_state == NLP_STE_PLOGI_ISSUE) {
+		/* software abort outstanding PLOGI */
+		lpfc_els_abort(phba, ndlp);
+	}
+
+	if ((vport->port_type == LPFC_NPIV_PORT &&
+	     vport->cfg_restrict_login)) {
+
+		/* In order to preserve RPIs, we want to cleanup
+		 * the default RPI the firmware created to rcv
+		 * this ELS request. The only way to do this is
+		 * to register, then unregister the RPI.
+		 */
+		spin_lock_irq(shost->host_lock);
+		ndlp->nlp_flag |= NLP_RM_DFLT_RPI;
+		spin_unlock_irq(shost->host_lock);
+		stat.un.b.lsRjtRsnCode = LSRJT_INVALID_CMD;
+		stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
+		rc = lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb,
+			ndlp, mbox);
+		if (rc)
+			mempool_free(mbox, phba->mbox_mem_pool);
+		return 1;
+	}
+	rc = lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb, ndlp, mbox);
+	if (rc)
+		mempool_free(mbox, phba->mbox_mem_pool);
+	return 1;
+out:
+	stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
+	stat.un.b.lsRjtRsnCodeExp = LSEXP_OUT_OF_RESOURCE;
+	lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
+	return 0;
+}
+
+/**
+ * lpfc_mbx_cmpl_resume_rpi - Resume RPI completion routine
+ * @phba: pointer to lpfc hba data structure.
+ * @mboxq: pointer to mailbox object
+ *
+ * This routine is invoked to issue a completion to a rcv'ed
+ * ADISC or PDISC after the paused RPI has been resumed.
+ **/
+static void
+lpfc_mbx_cmpl_resume_rpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
+{
+	struct lpfc_vport *vport;
+	struct lpfc_iocbq *elsiocb;
+	struct lpfc_nodelist *ndlp;
+	uint32_t cmd;
+
+	elsiocb = (struct lpfc_iocbq *)mboxq->context1;
+	ndlp = (struct lpfc_nodelist *) mboxq->context2;
+	vport = mboxq->vport;
+	cmd = elsiocb->drvrTimeout;
+
+	if (cmd == ELS_CMD_ADISC) {
+		lpfc_els_rsp_adisc_acc(vport, elsiocb, ndlp);
+	} else {
+		lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, elsiocb,
+			ndlp, NULL);
+	}
+	kfree(elsiocb);
+	mempool_free(mboxq, phba->mbox_mem_pool);
+}
+
+static int
+lpfc_rcv_padisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
+		struct lpfc_iocbq *cmdiocb)
+{
+	struct Scsi_Host   *shost = lpfc_shost_from_vport(vport);
+	struct lpfc_iocbq  *elsiocb;
+	struct lpfc_dmabuf *pcmd;
+	struct serv_parm   *sp;
+	struct lpfc_name   *pnn, *ppn;
+	struct ls_rjt stat;
+	ADISC *ap;
+	IOCB_t *icmd;
+	uint32_t *lp;
+	uint32_t cmd;
+
+	pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
+	lp = (uint32_t *) pcmd->virt;
+
+	cmd = *lp++;
+	if (cmd == ELS_CMD_ADISC) {
+		ap = (ADISC *) lp;
+		pnn = (struct lpfc_name *) & ap->nodeName;
+		ppn = (struct lpfc_name *) & ap->portName;
+	} else {
+		sp = (struct serv_parm *) lp;
+		pnn = (struct lpfc_name *) & sp->nodeName;
+		ppn = (struct lpfc_name *) & sp->portName;
+	}
+
+	icmd = &cmdiocb->iocb;
+	if (icmd->ulpStatus == 0 && lpfc_check_adisc(vport, ndlp, pnn, ppn)) {
+
+		/*
+		 * As soon as  we send ACC, the remote NPort can
+		 * start sending us data. Thus, for SLI4 we must
+		 * resume the RPI before the ACC goes out.
+		 */
+		if (vport->phba->sli_rev == LPFC_SLI_REV4) {
+			elsiocb = kmalloc(sizeof(struct lpfc_iocbq),
+				GFP_KERNEL);
+			if (elsiocb) {
+
+				/* Save info from cmd IOCB used in rsp */
+				memcpy((uint8_t *)elsiocb, (uint8_t *)cmdiocb,
+					sizeof(struct lpfc_iocbq));
+
+				/* Save the ELS cmd */
+				elsiocb->drvrTimeout = cmd;
+
+				lpfc_sli4_resume_rpi(ndlp,
+					lpfc_mbx_cmpl_resume_rpi, elsiocb);
+				goto out;
+			}
+		}
+
+		if (cmd == ELS_CMD_ADISC) {
+			lpfc_els_rsp_adisc_acc(vport, cmdiocb, ndlp);
+		} else {
+			lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb,
+				ndlp, NULL);
+		}
+out:
+		/* If we are authenticated, move to the proper state */
+		if (ndlp->nlp_type & NLP_FCP_TARGET)
+			lpfc_nlp_set_state(vport, ndlp, NLP_STE_MAPPED_NODE);
+		else
+			lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
+
+		return 1;
+	}
+	/* Reject this request because invalid parameters */
+	stat.un.b.lsRjtRsvd0 = 0;
+	stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
+	stat.un.b.lsRjtRsnCodeExp = LSEXP_SPARM_OPTIONS;
+	stat.un.b.vendorUnique = 0;
+	lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
+
+	/* 1 sec timeout */
+	mod_timer(&ndlp->nlp_delayfunc, jiffies + msecs_to_jiffies(1000));
+
+	spin_lock_irq(shost->host_lock);
+	ndlp->nlp_flag |= NLP_DELAY_TMO;
+	spin_unlock_irq(shost->host_lock);
+	ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
+	ndlp->nlp_prev_state = ndlp->nlp_state;
+	lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
+	return 0;
+}
+
+static int
+lpfc_rcv_logo(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
+	      struct lpfc_iocbq *cmdiocb, uint32_t els_cmd)
+{
+	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
+	struct lpfc_hba    *phba = vport->phba;
+	struct lpfc_vport **vports;
+	int i, active_vlink_present = 0 ;
+
+	/* Put ndlp in NPR state with 1 sec timeout for plogi, ACC logo */
+	/* Only call LOGO ACC for first LOGO, this avoids sending unnecessary
+	 * PLOGIs during LOGO storms from a device.
+	 */
+	spin_lock_irq(shost->host_lock);
+	ndlp->nlp_flag |= NLP_LOGO_ACC;
+	spin_unlock_irq(shost->host_lock);
+	if (els_cmd == ELS_CMD_PRLO)
+		lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
+	else
+		lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
+	if (ndlp->nlp_DID == Fabric_DID) {
+		if (vport->port_state <= LPFC_FDISC)
+			goto out;
+		lpfc_linkdown_port(vport);
+		spin_lock_irq(shost->host_lock);
+		vport->fc_flag |= FC_VPORT_LOGO_RCVD;
+		spin_unlock_irq(shost->host_lock);
+		vports = lpfc_create_vport_work_array(phba);
+		if (vports) {
+			for (i = 0; i <= phba->max_vports && vports[i] != NULL;
+					i++) {
+				if ((!(vports[i]->fc_flag &
+					FC_VPORT_LOGO_RCVD)) &&
+					(vports[i]->port_state > LPFC_FDISC)) {
+					active_vlink_present = 1;
+					break;
+				}
+			}
+			lpfc_destroy_vport_work_array(phba, vports);
+		}
+
+		if (active_vlink_present) {
+			/*
+			 * If there are other active VLinks present,
+			 * re-instantiate the Vlink using FDISC.
+			 */
+			mod_timer(&ndlp->nlp_delayfunc,
+				  jiffies + msecs_to_jiffies(1000));
+			spin_lock_irq(shost->host_lock);
+			ndlp->nlp_flag |= NLP_DELAY_TMO;
+			spin_unlock_irq(shost->host_lock);
+			ndlp->nlp_last_elscmd = ELS_CMD_FDISC;
+			vport->port_state = LPFC_FDISC;
+		} else {
+			spin_lock_irq(shost->host_lock);
+			phba->pport->fc_flag &= ~FC_LOGO_RCVD_DID_CHNG;
+			spin_unlock_irq(shost->host_lock);
+			lpfc_retry_pport_discovery(phba);
+		}
+	} else if ((!(ndlp->nlp_type & NLP_FABRIC) &&
+		((ndlp->nlp_type & NLP_FCP_TARGET) ||
+		!(ndlp->nlp_type & NLP_FCP_INITIATOR))) ||
+		(ndlp->nlp_state == NLP_STE_ADISC_ISSUE)) {
+		/* Only try to re-login if this is NOT a Fabric Node */
+		mod_timer(&ndlp->nlp_delayfunc,
+			  jiffies + msecs_to_jiffies(1000 * 1));
+		spin_lock_irq(shost->host_lock);
+		ndlp->nlp_flag |= NLP_DELAY_TMO;
+		spin_unlock_irq(shost->host_lock);
+
+		ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
+	}
+out:
+	ndlp->nlp_prev_state = ndlp->nlp_state;
+	lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
+
+	spin_lock_irq(shost->host_lock);
+	ndlp->nlp_flag &= ~NLP_NPR_ADISC;
+	spin_unlock_irq(shost->host_lock);
+	/* The driver has to wait until the ACC completes before it continues
+	 * processing the LOGO.  The action will resume in
+	 * lpfc_cmpl_els_logo_acc routine. Since part of processing includes an
+	 * unreg_login, the driver waits so the ACC does not get aborted.
+	 */
+	return 0;
+}
+
+static void
+lpfc_rcv_prli(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
+	      struct lpfc_iocbq *cmdiocb)
+{
+	struct lpfc_dmabuf *pcmd;
+	uint32_t *lp;
+	PRLI *npr;
+	struct fc_rport *rport = ndlp->rport;
+	u32 roles;
+
+	pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
+	lp = (uint32_t *) pcmd->virt;
+	npr = (PRLI *) ((uint8_t *) lp + sizeof (uint32_t));
+
+	ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
+	ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE;
+	ndlp->nlp_flag &= ~NLP_FIRSTBURST;
+	if (npr->prliType == PRLI_FCP_TYPE) {
+		if (npr->initiatorFunc)
+			ndlp->nlp_type |= NLP_FCP_INITIATOR;
+		if (npr->targetFunc) {
+			ndlp->nlp_type |= NLP_FCP_TARGET;
+			if (npr->writeXferRdyDis)
+				ndlp->nlp_flag |= NLP_FIRSTBURST;
+		}
+		if (npr->Retry)
+			ndlp->nlp_fcp_info |= NLP_FCP_2_DEVICE;
+	}
+	if (rport) {
+		/* We need to update the rport role values */
+		roles = FC_RPORT_ROLE_UNKNOWN;
+		if (ndlp->nlp_type & NLP_FCP_INITIATOR)
+			roles |= FC_RPORT_ROLE_FCP_INITIATOR;
+		if (ndlp->nlp_type & NLP_FCP_TARGET)
+			roles |= FC_RPORT_ROLE_FCP_TARGET;
+
+		lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
+			"rport rolechg:   role:x%x did:x%x flg:x%x",
+			roles, ndlp->nlp_DID, ndlp->nlp_flag);
+
+		fc_remote_port_rolechg(rport, roles);
+	}
+}
+
+static uint32_t
+lpfc_disc_set_adisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
+{
+	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
+
+	if (!(ndlp->nlp_flag & NLP_RPI_REGISTERED)) {
+		ndlp->nlp_flag &= ~NLP_NPR_ADISC;
+		return 0;
+	}
+
+	if (!(vport->fc_flag & FC_PT2PT)) {
+		/* Check config parameter use-adisc or FCP-2 */
+		if ((vport->cfg_use_adisc && (vport->fc_flag & FC_RSCN_MODE)) ||
+		    ((ndlp->nlp_fcp_info & NLP_FCP_2_DEVICE) &&
+		     (ndlp->nlp_type & NLP_FCP_TARGET))) {
+			spin_lock_irq(shost->host_lock);
+			ndlp->nlp_flag |= NLP_NPR_ADISC;
+			spin_unlock_irq(shost->host_lock);
+			return 1;
+		}
+	}
+	ndlp->nlp_flag &= ~NLP_NPR_ADISC;
+	lpfc_unreg_rpi(vport, ndlp);
+	return 0;
+}
+
+/**
+ * lpfc_release_rpi - Release a RPI by issuing unreg_login mailbox cmd.
+ * @phba : Pointer to lpfc_hba structure.
+ * @vport: Pointer to lpfc_vport structure.
+ * @rpi  : rpi to be release.
+ *
+ * This function will send a unreg_login mailbox command to the firmware
+ * to release a rpi.
+ **/
+void
+lpfc_release_rpi(struct lpfc_hba *phba,
+		struct lpfc_vport *vport,
+		uint16_t rpi)
+{
+	LPFC_MBOXQ_t *pmb;
+	int rc;
+
+	pmb = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool,
+			GFP_KERNEL);
+	if (!pmb)
+		lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
+			"2796 mailbox memory allocation failed \n");
+	else {
+		lpfc_unreg_login(phba, vport->vpi, rpi, pmb);
+		pmb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
+		rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
+		if (rc == MBX_NOT_FINISHED)
+			mempool_free(pmb, phba->mbox_mem_pool);
+	}
+}
+
+static uint32_t
+lpfc_disc_illegal(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
+		  void *arg, uint32_t evt)
+{
+	struct lpfc_hba *phba;
+	LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
+	MAILBOX_t *mb;
+	uint16_t rpi;
+
+	phba = vport->phba;
+	/* Release the RPI if reglogin completing */
+	if (!(phba->pport->load_flag & FC_UNLOADING) &&
+		(evt == NLP_EVT_CMPL_REG_LOGIN) &&
+		(!pmb->u.mb.mbxStatus)) {
+		mb = &pmb->u.mb;
+		rpi = pmb->u.mb.un.varWords[0];
+		lpfc_release_rpi(phba, vport, rpi);
+	}
+	lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
+			 "0271 Illegal State Transition: node x%x "
+			 "event x%x, state x%x Data: x%x x%x\n",
+			 ndlp->nlp_DID, evt, ndlp->nlp_state, ndlp->nlp_rpi,
+			 ndlp->nlp_flag);
+	return ndlp->nlp_state;
+}
+
+static uint32_t
+lpfc_cmpl_plogi_illegal(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
+		  void *arg, uint32_t evt)
+{
+	/* This transition is only legal if we previously
+	 * rcv'ed a PLOGI. Since we don't want 2 discovery threads
+	 * working on the same NPortID, do nothing for this thread
+	 * to stop it.
+	 */
+	if (!(ndlp->nlp_flag & NLP_RCV_PLOGI)) {
+		lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
+			 "0272 Illegal State Transition: node x%x "
+			 "event x%x, state x%x Data: x%x x%x\n",
+			 ndlp->nlp_DID, evt, ndlp->nlp_state, ndlp->nlp_rpi,
+			 ndlp->nlp_flag);
+	}
+	return ndlp->nlp_state;
+}
+
+/* Start of Discovery State Machine routines */
+
+static uint32_t
+lpfc_rcv_plogi_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
+			   void *arg, uint32_t evt)
+{
+	struct lpfc_iocbq *cmdiocb;
+
+	cmdiocb = (struct lpfc_iocbq *) arg;
+
+	if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
+		return ndlp->nlp_state;
+	}
+	return NLP_STE_FREED_NODE;
+}
+
+static uint32_t
+lpfc_rcv_els_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
+			 void *arg, uint32_t evt)
+{
+	lpfc_issue_els_logo(vport, ndlp, 0);
+	return ndlp->nlp_state;
+}
+
+static uint32_t
+lpfc_rcv_logo_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
+			  void *arg, uint32_t evt)
+{
+	struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
+	struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
+
+	spin_lock_irq(shost->host_lock);
+	ndlp->nlp_flag |= NLP_LOGO_ACC;
+	spin_unlock_irq(shost->host_lock);
+	lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
+
+	return ndlp->nlp_state;
+}
+
+static uint32_t
+lpfc_cmpl_logo_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
+			   void *arg, uint32_t evt)
+{
+	return NLP_STE_FREED_NODE;
+}
+
+static uint32_t
+lpfc_device_rm_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
+			   void *arg, uint32_t evt)
+{
+	return NLP_STE_FREED_NODE;
+}
+
+static uint32_t
+lpfc_device_recov_unused_node(struct lpfc_vport *vport,
+			struct lpfc_nodelist *ndlp,
+			   void *arg, uint32_t evt)
+{
+	return ndlp->nlp_state;
+}
+
+static uint32_t
+lpfc_rcv_plogi_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
+			   void *arg, uint32_t evt)
+{
+	struct Scsi_Host   *shost = lpfc_shost_from_vport(vport);
+	struct lpfc_hba   *phba = vport->phba;
+	struct lpfc_iocbq *cmdiocb = arg;
+	struct lpfc_dmabuf *pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
+	uint32_t *lp = (uint32_t *) pcmd->virt;
+	struct serv_parm *sp = (struct serv_parm *) (lp + 1);
+	struct ls_rjt stat;
+	int port_cmp;
+
+	memset(&stat, 0, sizeof (struct ls_rjt));
+
+	/* For a PLOGI, we only accept if our portname is less
+	 * than the remote portname.
+	 */
+	phba->fc_stat.elsLogiCol++;
+	port_cmp = memcmp(&vport->fc_portname, &sp->portName,
+			  sizeof(struct lpfc_name));
+
+	if (port_cmp >= 0) {
+		/* Reject this request because the remote node will accept
+		   ours */
+		stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
+		stat.un.b.lsRjtRsnCodeExp = LSEXP_CMD_IN_PROGRESS;
+		lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
+			NULL);
+	} else {
+		if (lpfc_rcv_plogi(vport, ndlp, cmdiocb) &&
+		    (ndlp->nlp_flag & NLP_NPR_2B_DISC) &&
+		    (vport->num_disc_nodes)) {
+			spin_lock_irq(shost->host_lock);
+			ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
+			spin_unlock_irq(shost->host_lock);
+			/* Check if there are more PLOGIs to be sent */
+			lpfc_more_plogi(vport);
+			if (vport->num_disc_nodes == 0) {
+				spin_lock_irq(shost->host_lock);
+				vport->fc_flag &= ~FC_NDISC_ACTIVE;
+				spin_unlock_irq(shost->host_lock);
+				lpfc_can_disctmo(vport);
+				lpfc_end_rscn(vport);
+			}
+		}
+	} /* If our portname was less */
+
+	return ndlp->nlp_state;
+}
+
+static uint32_t
+lpfc_rcv_prli_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
+			  void *arg, uint32_t evt)
+{
+	struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
+	struct ls_rjt     stat;
+
+	memset(&stat, 0, sizeof (struct ls_rjt));
+	stat.un.b.lsRjtRsnCode = LSRJT_LOGICAL_BSY;
+	stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
+	lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
+	return ndlp->nlp_state;
+}
+
+static uint32_t
+lpfc_rcv_logo_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
+			  void *arg, uint32_t evt)
+{
+	struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
+
+				/* software abort outstanding PLOGI */
+	lpfc_els_abort(vport->phba, ndlp);
+
+	lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
+	return ndlp->nlp_state;
+}
+
+static uint32_t
+lpfc_rcv_els_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
+			 void *arg, uint32_t evt)
+{
+	struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
+	struct lpfc_hba   *phba = vport->phba;
+	struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
+
+	/* software abort outstanding PLOGI */
+	lpfc_els_abort(phba, ndlp);
+
+	if (evt == NLP_EVT_RCV_LOGO) {
+		lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
+	} else {
+		lpfc_issue_els_logo(vport, ndlp, 0);
+	}
+
+	/* Put ndlp in npr state set plogi timer for 1 sec */
+	mod_timer(&ndlp->nlp_delayfunc, jiffies + msecs_to_jiffies(1000 * 1));
+	spin_lock_irq(shost->host_lock);
+	ndlp->nlp_flag |= NLP_DELAY_TMO;
+	spin_unlock_irq(shost->host_lock);
+	ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
+	ndlp->nlp_prev_state = NLP_STE_PLOGI_ISSUE;
+	lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
+
+	return ndlp->nlp_state;
+}
+
+static uint32_t
+lpfc_cmpl_plogi_plogi_issue(struct lpfc_vport *vport,
+			    struct lpfc_nodelist *ndlp,
+			    void *arg,
+			    uint32_t evt)
+{
+	struct lpfc_hba    *phba = vport->phba;
+	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
+	struct lpfc_iocbq  *cmdiocb, *rspiocb;
+	struct lpfc_dmabuf *pcmd, *prsp, *mp;
+	uint32_t *lp;
+	IOCB_t *irsp;
+	struct serv_parm *sp;
+	LPFC_MBOXQ_t *mbox;
+
+	cmdiocb = (struct lpfc_iocbq *) arg;
+	rspiocb = cmdiocb->context_un.rsp_iocb;
+
+	if (ndlp->nlp_flag & NLP_ACC_REGLOGIN) {
+		/* Recovery from PLOGI collision logic */
+		return ndlp->nlp_state;
+	}
+
+	irsp = &rspiocb->iocb;
+
+	if (irsp->ulpStatus)
+		goto out;
+
+	pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
+
+	prsp = list_get_first(&pcmd->list, struct lpfc_dmabuf, list);
+	if (!prsp)
+		goto out;
+
+	lp = (uint32_t *) prsp->virt;
+	sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t));
+
+	/* Some switches have FDMI servers returning 0 for WWN */
+	if ((ndlp->nlp_DID != FDMI_DID) &&
+		(wwn_to_u64(sp->portName.u.wwn) == 0 ||
+		wwn_to_u64(sp->nodeName.u.wwn) == 0)) {
+		lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
+				 "0142 PLOGI RSP: Invalid WWN.\n");
+		goto out;
+	}
+	if (!lpfc_check_sparm(vport, ndlp, sp, CLASS3, 0))
+		goto out;
+	/* PLOGI chkparm OK */
+	lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
+			 "0121 PLOGI chkparm OK Data: x%x x%x x%x x%x\n",
+			 ndlp->nlp_DID, ndlp->nlp_state,
+			 ndlp->nlp_flag, ndlp->nlp_rpi);
+	if (vport->cfg_fcp_class == 2 && (sp->cls2.classValid))
+		ndlp->nlp_fcp_info |= CLASS2;
+	else
+		ndlp->nlp_fcp_info |= CLASS3;
+
+	ndlp->nlp_class_sup = 0;
+	if (sp->cls1.classValid)
+		ndlp->nlp_class_sup |= FC_COS_CLASS1;
+	if (sp->cls2.classValid)
+		ndlp->nlp_class_sup |= FC_COS_CLASS2;
+	if (sp->cls3.classValid)
+		ndlp->nlp_class_sup |= FC_COS_CLASS3;
+	if (sp->cls4.classValid)
+		ndlp->nlp_class_sup |= FC_COS_CLASS4;
+	ndlp->nlp_maxframe =
+		((sp->cmn.bbRcvSizeMsb & 0x0F) << 8) | sp->cmn.bbRcvSizeLsb;
+
+	mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
+	if (!mbox) {
+		lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
+			"0133 PLOGI: no memory for reg_login "
+			"Data: x%x x%x x%x x%x\n",
+			ndlp->nlp_DID, ndlp->nlp_state,
+			ndlp->nlp_flag, ndlp->nlp_rpi);
+		goto out;
+	}
+
+	lpfc_unreg_rpi(vport, ndlp);
+
+	if (lpfc_reg_rpi(phba, vport->vpi, irsp->un.elsreq64.remoteID,
+			 (uint8_t *) sp, mbox, ndlp->nlp_rpi) == 0) {
+		switch (ndlp->nlp_DID) {
+		case NameServer_DID:
+			mbox->mbox_cmpl = lpfc_mbx_cmpl_ns_reg_login;
+			break;
+		case FDMI_DID:
+			mbox->mbox_cmpl = lpfc_mbx_cmpl_fdmi_reg_login;
+			break;
+		default:
+			ndlp->nlp_flag |= NLP_REG_LOGIN_SEND;
+			mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login;
+		}
+		mbox->context2 = lpfc_nlp_get(ndlp);
+		mbox->vport = vport;
+		if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT)
+		    != MBX_NOT_FINISHED) {
+			lpfc_nlp_set_state(vport, ndlp,
+					   NLP_STE_REG_LOGIN_ISSUE);
+			return ndlp->nlp_state;
+		}
+		if (ndlp->nlp_flag & NLP_REG_LOGIN_SEND)
+			ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND;
+		/* decrement node reference count to the failed mbox
+		 * command
+		 */
+		lpfc_nlp_put(ndlp);
+		mp = (struct lpfc_dmabuf *) mbox->context1;
+		lpfc_mbuf_free(phba, mp->virt, mp->phys);
+		kfree(mp);
+		mempool_free(mbox, phba->mbox_mem_pool);
+
+		lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
+				 "0134 PLOGI: cannot issue reg_login "
+				 "Data: x%x x%x x%x x%x\n",
+				 ndlp->nlp_DID, ndlp->nlp_state,
+				 ndlp->nlp_flag, ndlp->nlp_rpi);
+	} else {
+		mempool_free(mbox, phba->mbox_mem_pool);
+
+		lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
+				 "0135 PLOGI: cannot format reg_login "
+				 "Data: x%x x%x x%x x%x\n",
+				 ndlp->nlp_DID, ndlp->nlp_state,
+				 ndlp->nlp_flag, ndlp->nlp_rpi);
+	}
+
+
+out:
+	if (ndlp->nlp_DID == NameServer_DID) {
+		lpfc_vport_set_state(vport, FC_VPORT_FAILED);
+		lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
+				 "0261 Cannot Register NameServer login\n");
+	}
+
+	/*
+	** In case the node reference counter does not go to zero, ensure that
+	** the stale state for the node is not processed.
+	*/
+
+	ndlp->nlp_prev_state = ndlp->nlp_state;
+	lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
+	spin_lock_irq(shost->host_lock);
+	ndlp->nlp_flag |= NLP_DEFER_RM;
+	spin_unlock_irq(shost->host_lock);
+	return NLP_STE_FREED_NODE;
+}
+
+static uint32_t
+lpfc_cmpl_logo_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
+			   void *arg, uint32_t evt)
+{
+	return ndlp->nlp_state;
+}
+
+static uint32_t
+lpfc_cmpl_reglogin_plogi_issue(struct lpfc_vport *vport,
+	struct lpfc_nodelist *ndlp, void *arg, uint32_t evt)
+{
+	struct lpfc_hba *phba;
+	LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
+	MAILBOX_t *mb = &pmb->u.mb;
+	uint16_t rpi;
+
+	phba = vport->phba;
+	/* Release the RPI */
+	if (!(phba->pport->load_flag & FC_UNLOADING) &&
+		!mb->mbxStatus) {
+		rpi = pmb->u.mb.un.varWords[0];
+		lpfc_release_rpi(phba, vport, rpi);
+	}
+	return ndlp->nlp_state;
+}
+
+static uint32_t
+lpfc_device_rm_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
+			   void *arg, uint32_t evt)
+{
+	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
+
+	if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
+		spin_lock_irq(shost->host_lock);
+		ndlp->nlp_flag |= NLP_NODEV_REMOVE;
+		spin_unlock_irq(shost->host_lock);
+		return ndlp->nlp_state;
+	} else {
+		/* software abort outstanding PLOGI */
+		lpfc_els_abort(vport->phba, ndlp);
+
+		lpfc_drop_node(vport, ndlp);
+		return NLP_STE_FREED_NODE;
+	}
+}
+
+static uint32_t
+lpfc_device_recov_plogi_issue(struct lpfc_vport *vport,
+			      struct lpfc_nodelist *ndlp,
+			      void *arg,
+			      uint32_t evt)
+{
+	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
+	struct lpfc_hba  *phba = vport->phba;
+
+	/* Don't do anything that will mess up processing of the
+	 * previous RSCN.
+	 */
+	if (vport->fc_flag & FC_RSCN_DEFERRED)
+		return ndlp->nlp_state;
+
+	/* software abort outstanding PLOGI */
+	lpfc_els_abort(phba, ndlp);
+
+	ndlp->nlp_prev_state = NLP_STE_PLOGI_ISSUE;
+	lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
+	spin_lock_irq(shost->host_lock);
+	ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
+	spin_unlock_irq(shost->host_lock);
+
+	return ndlp->nlp_state;
+}
+
+static uint32_t
+lpfc_rcv_plogi_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
+			   void *arg, uint32_t evt)
+{
+	struct Scsi_Host   *shost = lpfc_shost_from_vport(vport);
+	struct lpfc_hba   *phba = vport->phba;
+	struct lpfc_iocbq *cmdiocb;
+
+	/* software abort outstanding ADISC */
+	lpfc_els_abort(phba, ndlp);
+
+	cmdiocb = (struct lpfc_iocbq *) arg;
+
+	if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
+		if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
+			spin_lock_irq(shost->host_lock);
+			ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
+			spin_unlock_irq(shost->host_lock);
+			if (vport->num_disc_nodes)
+				lpfc_more_adisc(vport);
+		}
+		return ndlp->nlp_state;
+	}
+	ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
+	lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
+	lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
+
+	return ndlp->nlp_state;
+}
+
+static uint32_t
+lpfc_rcv_prli_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
+			  void *arg, uint32_t evt)
+{
+	struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
+
+	lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
+	return ndlp->nlp_state;
+}
+
+static uint32_t
+lpfc_rcv_logo_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
+			  void *arg, uint32_t evt)
+{
+	struct lpfc_hba *phba = vport->phba;
+	struct lpfc_iocbq *cmdiocb;
+
+	cmdiocb = (struct lpfc_iocbq *) arg;
+
+	/* software abort outstanding ADISC */
+	lpfc_els_abort(phba, ndlp);
+
+	lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
+	return ndlp->nlp_state;
+}
+
+static uint32_t
+lpfc_rcv_padisc_adisc_issue(struct lpfc_vport *vport,
+			    struct lpfc_nodelist *ndlp,
+			    void *arg, uint32_t evt)
+{
+	struct lpfc_iocbq *cmdiocb;
+
+	cmdiocb = (struct lpfc_iocbq *) arg;
+
+	lpfc_rcv_padisc(vport, ndlp, cmdiocb);
+	return ndlp->nlp_state;
+}
+
+static uint32_t
+lpfc_rcv_prlo_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
+			  void *arg, uint32_t evt)
+{
+	struct lpfc_iocbq *cmdiocb;
+
+	cmdiocb = (struct lpfc_iocbq *) arg;
+
+	/* Treat like rcv logo */
+	lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_PRLO);
+	return ndlp->nlp_state;
+}
+
+static uint32_t
+lpfc_cmpl_adisc_adisc_issue(struct lpfc_vport *vport,
+			    struct lpfc_nodelist *ndlp,
+			    void *arg, uint32_t evt)
+{
+	struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
+	struct lpfc_hba   *phba = vport->phba;
+	struct lpfc_iocbq *cmdiocb, *rspiocb;
+	IOCB_t *irsp;
+	ADISC *ap;
+	int rc;
+
+	cmdiocb = (struct lpfc_iocbq *) arg;
+	rspiocb = cmdiocb->context_un.rsp_iocb;
+
+	ap = (ADISC *)lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb);
+	irsp = &rspiocb->iocb;
+
+	if ((irsp->ulpStatus) ||
+	    (!lpfc_check_adisc(vport, ndlp, &ap->nodeName, &ap->portName))) {
+		/* 1 sec timeout */
+		mod_timer(&ndlp->nlp_delayfunc,
+			  jiffies + msecs_to_jiffies(1000));
+		spin_lock_irq(shost->host_lock);
+		ndlp->nlp_flag |= NLP_DELAY_TMO;
+		spin_unlock_irq(shost->host_lock);
+		ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
+
+		memset(&ndlp->nlp_nodename, 0, sizeof(struct lpfc_name));
+		memset(&ndlp->nlp_portname, 0, sizeof(struct lpfc_name));
+
+		ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
+		lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
+		lpfc_unreg_rpi(vport, ndlp);
+		return ndlp->nlp_state;
+	}
+
+	if (phba->sli_rev == LPFC_SLI_REV4) {
+		rc = lpfc_sli4_resume_rpi(ndlp, NULL, NULL);
+		if (rc) {
+			/* Stay in state and retry. */
+			ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
+			return ndlp->nlp_state;
+		}
+	}
+
+	if (ndlp->nlp_type & NLP_FCP_TARGET) {
+		ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
+		lpfc_nlp_set_state(vport, ndlp, NLP_STE_MAPPED_NODE);
+	} else {
+		ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
+		lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
+	}
+
+	return ndlp->nlp_state;
+}
+
+static uint32_t
+lpfc_device_rm_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
+			   void *arg, uint32_t evt)
+{
+	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
+
+	if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
+		spin_lock_irq(shost->host_lock);
+		ndlp->nlp_flag |= NLP_NODEV_REMOVE;
+		spin_unlock_irq(shost->host_lock);
+		return ndlp->nlp_state;
+	} else {
+		/* software abort outstanding ADISC */
+		lpfc_els_abort(vport->phba, ndlp);
+
+		lpfc_drop_node(vport, ndlp);
+		return NLP_STE_FREED_NODE;
+	}
+}
+
+static uint32_t
+lpfc_device_recov_adisc_issue(struct lpfc_vport *vport,
+			      struct lpfc_nodelist *ndlp,
+			      void *arg,
+			      uint32_t evt)
+{
+	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
+	struct lpfc_hba  *phba = vport->phba;
+
+	/* Don't do anything that will mess up processing of the
+	 * previous RSCN.
+	 */
+	if (vport->fc_flag & FC_RSCN_DEFERRED)
+		return ndlp->nlp_state;
+
+	/* software abort outstanding ADISC */
+	lpfc_els_abort(phba, ndlp);
+
+	ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
+	lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
+	spin_lock_irq(shost->host_lock);
+	ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
+	spin_unlock_irq(shost->host_lock);
+	lpfc_disc_set_adisc(vport, ndlp);
+	return ndlp->nlp_state;
+}
+
+static uint32_t
+lpfc_rcv_plogi_reglogin_issue(struct lpfc_vport *vport,
+			      struct lpfc_nodelist *ndlp,
+			      void *arg,
+			      uint32_t evt)
+{
+	struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
+
+	lpfc_rcv_plogi(vport, ndlp, cmdiocb);
+	return ndlp->nlp_state;
+}
+
+static uint32_t
+lpfc_rcv_prli_reglogin_issue(struct lpfc_vport *vport,
+			     struct lpfc_nodelist *ndlp,
+			     void *arg,
+			     uint32_t evt)
+{
+	struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
+
+	lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
+	return ndlp->nlp_state;
+}
+
+static uint32_t
+lpfc_rcv_logo_reglogin_issue(struct lpfc_vport *vport,
+			     struct lpfc_nodelist *ndlp,
+			     void *arg,
+			     uint32_t evt)
+{
+	struct lpfc_hba   *phba = vport->phba;
+	struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
+	LPFC_MBOXQ_t	  *mb;
+	LPFC_MBOXQ_t	  *nextmb;
+	struct lpfc_dmabuf *mp;
+
+	cmdiocb = (struct lpfc_iocbq *) arg;
+
+	/* cleanup any ndlp on mbox q waiting for reglogin cmpl */
+	if ((mb = phba->sli.mbox_active)) {
+		if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
+		   (ndlp == (struct lpfc_nodelist *) mb->context2)) {
+			lpfc_nlp_put(ndlp);
+			mb->context2 = NULL;
+			mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
+		}
+	}
+
+	spin_lock_irq(&phba->hbalock);
+	list_for_each_entry_safe(mb, nextmb, &phba->sli.mboxq, list) {
+		if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
+		   (ndlp == (struct lpfc_nodelist *) mb->context2)) {
+			mp = (struct lpfc_dmabuf *) (mb->context1);
+			if (mp) {
+				__lpfc_mbuf_free(phba, mp->virt, mp->phys);
+				kfree(mp);
+			}
+			lpfc_nlp_put(ndlp);
+			list_del(&mb->list);
+			phba->sli.mboxq_cnt--;
+			mempool_free(mb, phba->mbox_mem_pool);
+		}
+	}
+	spin_unlock_irq(&phba->hbalock);
+
+	lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
+	return ndlp->nlp_state;
+}
+
+static uint32_t
+lpfc_rcv_padisc_reglogin_issue(struct lpfc_vport *vport,
+			       struct lpfc_nodelist *ndlp,
+			       void *arg,
+			       uint32_t evt)
+{
+	struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
+
+	lpfc_rcv_padisc(vport, ndlp, cmdiocb);
+	return ndlp->nlp_state;
+}
+
+static uint32_t
+lpfc_rcv_prlo_reglogin_issue(struct lpfc_vport *vport,
+			     struct lpfc_nodelist *ndlp,
+			     void *arg,
+			     uint32_t evt)
+{
+	struct lpfc_iocbq *cmdiocb;
+
+	cmdiocb = (struct lpfc_iocbq *) arg;
+	lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
+	return ndlp->nlp_state;
+}
+
+static uint32_t
+lpfc_cmpl_reglogin_reglogin_issue(struct lpfc_vport *vport,
+				  struct lpfc_nodelist *ndlp,
+				  void *arg,
+				  uint32_t evt)
+{
+	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
+	LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
+	MAILBOX_t *mb = &pmb->u.mb;
+	uint32_t did  = mb->un.varWords[1];
+
+	if (mb->mbxStatus) {
+		/* RegLogin failed */
+		lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
+				"0246 RegLogin failed Data: x%x x%x x%x x%x "
+				 "x%x\n",
+				 did, mb->mbxStatus, vport->port_state,
+				 mb->un.varRegLogin.vpi,
+				 mb->un.varRegLogin.rpi);
+		/*
+		 * If RegLogin failed due to lack of HBA resources do not
+		 * retry discovery.
+		 */
+		if (mb->mbxStatus == MBXERR_RPI_FULL) {
+			ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
+			lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
+			return ndlp->nlp_state;
+		}
+
+		/* Put ndlp in npr state set plogi timer for 1 sec */
+		mod_timer(&ndlp->nlp_delayfunc,
+			  jiffies + msecs_to_jiffies(1000 * 1));
+		spin_lock_irq(shost->host_lock);
+		ndlp->nlp_flag |= NLP_DELAY_TMO;
+		spin_unlock_irq(shost->host_lock);
+		ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
+
+		lpfc_issue_els_logo(vport, ndlp, 0);
+		ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
+		lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
+		return ndlp->nlp_state;
+	}
+
+	/* SLI4 ports have preallocated logical rpis. */
+	if (vport->phba->sli_rev < LPFC_SLI_REV4)
+		ndlp->nlp_rpi = mb->un.varWords[0];
+
+	ndlp->nlp_flag |= NLP_RPI_REGISTERED;
+
+	/* Only if we are not a fabric nport do we issue PRLI */
+	if (!(ndlp->nlp_type & NLP_FABRIC)) {
+		ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
+		lpfc_nlp_set_state(vport, ndlp, NLP_STE_PRLI_ISSUE);
+		lpfc_issue_els_prli(vport, ndlp, 0);
+	} else {
+		ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
+		lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
+	}
+	return ndlp->nlp_state;
+}
+
+static uint32_t
+lpfc_device_rm_reglogin_issue(struct lpfc_vport *vport,
+			      struct lpfc_nodelist *ndlp,
+			      void *arg,
+			      uint32_t evt)
+{
+	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
+
+	if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
+		spin_lock_irq(shost->host_lock);
+		ndlp->nlp_flag |= NLP_NODEV_REMOVE;
+		spin_unlock_irq(shost->host_lock);
+		return ndlp->nlp_state;
+	} else {
+		lpfc_drop_node(vport, ndlp);
+		return NLP_STE_FREED_NODE;
+	}
+}
+
+static uint32_t
+lpfc_device_recov_reglogin_issue(struct lpfc_vport *vport,
+				 struct lpfc_nodelist *ndlp,
+				 void *arg,
+				 uint32_t evt)
+{
+	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
+
+	/* Don't do anything that will mess up processing of the
+	 * previous RSCN.
+	 */
+	if (vport->fc_flag & FC_RSCN_DEFERRED)
+		return ndlp->nlp_state;
+
+	ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
+	lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
+	spin_lock_irq(shost->host_lock);
+	ndlp->nlp_flag |= NLP_IGNR_REG_CMPL;
+	ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
+	spin_unlock_irq(shost->host_lock);
+	lpfc_disc_set_adisc(vport, ndlp);
+	return ndlp->nlp_state;
+}
+
+static uint32_t
+lpfc_rcv_plogi_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
+			  void *arg, uint32_t evt)
+{
+	struct lpfc_iocbq *cmdiocb;
+
+	cmdiocb = (struct lpfc_iocbq *) arg;
+
+	lpfc_rcv_plogi(vport, ndlp, cmdiocb);
+	return ndlp->nlp_state;
+}
+
+static uint32_t
+lpfc_rcv_prli_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
+			 void *arg, uint32_t evt)
+{
+	struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
+
+	lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
+	return ndlp->nlp_state;
+}
+
+static uint32_t
+lpfc_rcv_logo_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
+			 void *arg, uint32_t evt)
+{
+	struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
+
+	/* Software abort outstanding PRLI before sending acc */
+	lpfc_els_abort(vport->phba, ndlp);
+
+	lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
+	return ndlp->nlp_state;
+}
+
+static uint32_t
+lpfc_rcv_padisc_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
+			   void *arg, uint32_t evt)
+{
+	struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
+
+	lpfc_rcv_padisc(vport, ndlp, cmdiocb);
+	return ndlp->nlp_state;
+}
+
+/* This routine is envoked when we rcv a PRLO request from a nport
+ * we are logged into.  We should send back a PRLO rsp setting the
+ * appropriate bits.
+ * NEXT STATE = PRLI_ISSUE
+ */
+static uint32_t
+lpfc_rcv_prlo_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
+			 void *arg, uint32_t evt)
+{
+	struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
+
+	lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
+	return ndlp->nlp_state;
+}
+
+static uint32_t
+lpfc_cmpl_prli_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
+			  void *arg, uint32_t evt)
+{
+	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
+	struct lpfc_iocbq *cmdiocb, *rspiocb;
+	struct lpfc_hba   *phba = vport->phba;
+	IOCB_t *irsp;
+	PRLI *npr;
+
+	cmdiocb = (struct lpfc_iocbq *) arg;
+	rspiocb = cmdiocb->context_un.rsp_iocb;
+	npr = (PRLI *)lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb);
+
+	irsp = &rspiocb->iocb;
+	if (irsp->ulpStatus) {
+		if ((vport->port_type == LPFC_NPIV_PORT) &&
+		    vport->cfg_restrict_login) {
+			goto out;
+		}
+		ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
+		lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
+		return ndlp->nlp_state;
+	}
+
+	/* Check out PRLI rsp */
+	ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
+	ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE;
+	ndlp->nlp_flag &= ~NLP_FIRSTBURST;
+	if ((npr->acceptRspCode == PRLI_REQ_EXECUTED) &&
+	    (npr->prliType == PRLI_FCP_TYPE)) {
+		if (npr->initiatorFunc)
+			ndlp->nlp_type |= NLP_FCP_INITIATOR;
+		if (npr->targetFunc) {
+			ndlp->nlp_type |= NLP_FCP_TARGET;
+			if (npr->writeXferRdyDis)
+				ndlp->nlp_flag |= NLP_FIRSTBURST;
+		}
+		if (npr->Retry)
+			ndlp->nlp_fcp_info |= NLP_FCP_2_DEVICE;
+	}
+	if (!(ndlp->nlp_type & NLP_FCP_TARGET) &&
+	    (vport->port_type == LPFC_NPIV_PORT) &&
+	     vport->cfg_restrict_login) {
+out:
+		spin_lock_irq(shost->host_lock);
+		ndlp->nlp_flag |= NLP_TARGET_REMOVE;
+		spin_unlock_irq(shost->host_lock);
+		lpfc_issue_els_logo(vport, ndlp, 0);
+
+		ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
+		lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
+		return ndlp->nlp_state;
+	}
+
+	ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
+	if (ndlp->nlp_type & NLP_FCP_TARGET)
+		lpfc_nlp_set_state(vport, ndlp, NLP_STE_MAPPED_NODE);
+	else
+		lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
+	return ndlp->nlp_state;
+}
+
+/*! lpfc_device_rm_prli_issue
+ *
+ * \pre
+ * \post
+ * \param   phba
+ * \param   ndlp
+ * \param   arg
+ * \param   evt
+ * \return  uint32_t
+ *
+ * \b Description:
+ *    This routine is envoked when we a request to remove a nport we are in the
+ *    process of PRLIing. We should software abort outstanding prli, unreg
+ *    login, send a logout. We will change node state to UNUSED_NODE, put it
+ *    on plogi list so it can be freed when LOGO completes.
+ *
+ */
+
+static uint32_t
+lpfc_device_rm_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
+			  void *arg, uint32_t evt)
+{
+	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
+
+	if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
+		spin_lock_irq(shost->host_lock);
+		ndlp->nlp_flag |= NLP_NODEV_REMOVE;
+		spin_unlock_irq(shost->host_lock);
+		return ndlp->nlp_state;
+	} else {
+		/* software abort outstanding PLOGI */
+		lpfc_els_abort(vport->phba, ndlp);
+
+		lpfc_drop_node(vport, ndlp);
+		return NLP_STE_FREED_NODE;
+	}
+}
+
+
+/*! lpfc_device_recov_prli_issue
+ *
+ * \pre
+ * \post
+ * \param   phba
+ * \param   ndlp
+ * \param   arg
+ * \param   evt
+ * \return  uint32_t
+ *
+ * \b Description:
+ *    The routine is envoked when the state of a device is unknown, like
+ *    during a link down. We should remove the nodelist entry from the
+ *    unmapped list, issue a UNREG_LOGIN, do a software abort of the
+ *    outstanding PRLI command, then free the node entry.
+ */
+static uint32_t
+lpfc_device_recov_prli_issue(struct lpfc_vport *vport,
+			     struct lpfc_nodelist *ndlp,
+			     void *arg,
+			     uint32_t evt)
+{
+	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
+	struct lpfc_hba  *phba = vport->phba;
+
+	/* Don't do anything that will mess up processing of the
+	 * previous RSCN.
+	 */
+	if (vport->fc_flag & FC_RSCN_DEFERRED)
+		return ndlp->nlp_state;
+
+	/* software abort outstanding PRLI */
+	lpfc_els_abort(phba, ndlp);
+
+	ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
+	lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
+	spin_lock_irq(shost->host_lock);
+	ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
+	spin_unlock_irq(shost->host_lock);
+	lpfc_disc_set_adisc(vport, ndlp);
+	return ndlp->nlp_state;
+}
+
+static uint32_t
+lpfc_rcv_plogi_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
+			  void *arg, uint32_t evt)
+{
+	struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
+	struct ls_rjt     stat;
+
+	memset(&stat, 0, sizeof(struct ls_rjt));
+	stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
+	stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
+	lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
+	return ndlp->nlp_state;
+}
+
+static uint32_t
+lpfc_rcv_prli_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
+			 void *arg, uint32_t evt)
+{
+	struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
+	struct ls_rjt     stat;
+
+	memset(&stat, 0, sizeof(struct ls_rjt));
+	stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
+	stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
+	lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
+	return ndlp->nlp_state;
+}
+
+static uint32_t
+lpfc_rcv_logo_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
+			 void *arg, uint32_t evt)
+{
+	struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
+	struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
+
+	spin_lock_irq(shost->host_lock);
+	ndlp->nlp_flag &= NLP_LOGO_ACC;
+	spin_unlock_irq(shost->host_lock);
+	lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
+	return ndlp->nlp_state;
+}
+
+static uint32_t
+lpfc_rcv_padisc_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
+			   void *arg, uint32_t evt)
+{
+	struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
+	struct ls_rjt     stat;
+
+	memset(&stat, 0, sizeof(struct ls_rjt));
+	stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
+	stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
+	lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
+	return ndlp->nlp_state;
+}
+
+static uint32_t
+lpfc_rcv_prlo_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
+			 void *arg, uint32_t evt)
+{
+	struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
+	struct ls_rjt     stat;
+
+	memset(&stat, 0, sizeof(struct ls_rjt));
+	stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
+	stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
+	lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
+	return ndlp->nlp_state;
+}
+
+static uint32_t
+lpfc_cmpl_logo_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
+			  void *arg, uint32_t evt)
+{
+	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
+
+	ndlp->nlp_prev_state = NLP_STE_LOGO_ISSUE;
+	lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
+	spin_lock_irq(shost->host_lock);
+	ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
+	spin_unlock_irq(shost->host_lock);
+	lpfc_disc_set_adisc(vport, ndlp);
+	return ndlp->nlp_state;
+}
+
+static uint32_t
+lpfc_device_rm_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
+			  void *arg, uint32_t evt)
+{
+	/*
+	 * Take no action.  If a LOGO is outstanding, then possibly DevLoss has
+	 * timed out and is calling for Device Remove.  In this case, the LOGO
+	 * must be allowed to complete in state LOGO_ISSUE so that the rpi
+	 * and other NLP flags are correctly cleaned up.
+	 */
+	return ndlp->nlp_state;
+}
+
+static uint32_t
+lpfc_device_recov_logo_issue(struct lpfc_vport *vport,
+			     struct lpfc_nodelist *ndlp,
+			     void *arg, uint32_t evt)
+{
+	/*
+	 * Device Recovery events have no meaning for a node with a LOGO
+	 * outstanding.  The LOGO has to complete first and handle the
+	 * node from that point.
+	 */
+	return ndlp->nlp_state;
+}
+
+static uint32_t
+lpfc_rcv_plogi_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
+			  void *arg, uint32_t evt)
+{
+	struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
+
+	lpfc_rcv_plogi(vport, ndlp, cmdiocb);
+	return ndlp->nlp_state;
+}
+
+static uint32_t
+lpfc_rcv_prli_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
+			 void *arg, uint32_t evt)
+{
+	struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
+
+	lpfc_rcv_prli(vport, ndlp, cmdiocb);
+	lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
+	return ndlp->nlp_state;
+}
+
+static uint32_t
+lpfc_rcv_logo_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
+			 void *arg, uint32_t evt)
+{
+	struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
+
+	lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
+	return ndlp->nlp_state;
+}
+
+static uint32_t
+lpfc_rcv_padisc_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
+			   void *arg, uint32_t evt)
+{
+	struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
+
+	lpfc_rcv_padisc(vport, ndlp, cmdiocb);
+	return ndlp->nlp_state;
+}
+
+static uint32_t
+lpfc_rcv_prlo_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
+			 void *arg, uint32_t evt)
+{
+	struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
+
+	lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
+	return ndlp->nlp_state;
+}
+
+static uint32_t
+lpfc_device_recov_unmap_node(struct lpfc_vport *vport,
+			     struct lpfc_nodelist *ndlp,
+			     void *arg,
+			     uint32_t evt)
+{
+	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
+
+	ndlp->nlp_prev_state = NLP_STE_UNMAPPED_NODE;
+	lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
+	spin_lock_irq(shost->host_lock);
+	ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
+	spin_unlock_irq(shost->host_lock);
+	lpfc_disc_set_adisc(vport, ndlp);
+
+	return ndlp->nlp_state;
+}
+
+static uint32_t
+lpfc_rcv_plogi_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
+			   void *arg, uint32_t evt)
+{
+	struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
+
+	lpfc_rcv_plogi(vport, ndlp, cmdiocb);
+	return ndlp->nlp_state;
+}
+
+static uint32_t
+lpfc_rcv_prli_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
+			  void *arg, uint32_t evt)
+{
+	struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
+
+	lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
+	return ndlp->nlp_state;
+}
+
+static uint32_t
+lpfc_rcv_logo_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
+			  void *arg, uint32_t evt)
+{
+	struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
+
+	lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
+	return ndlp->nlp_state;
+}
+
+static uint32_t
+lpfc_rcv_padisc_mapped_node(struct lpfc_vport *vport,
+			    struct lpfc_nodelist *ndlp,
+			    void *arg, uint32_t evt)
+{
+	struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
+
+	lpfc_rcv_padisc(vport, ndlp, cmdiocb);
+	return ndlp->nlp_state;
+}
+
+static uint32_t
+lpfc_rcv_prlo_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
+			  void *arg, uint32_t evt)
+{
+	struct lpfc_hba  *phba = vport->phba;
+	struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
+
+	/* flush the target */
+	lpfc_sli_abort_iocb(vport, &phba->sli.ring[phba->sli.fcp_ring],
+			    ndlp->nlp_sid, 0, LPFC_CTX_TGT);
+
+	/* Treat like rcv logo */
+	lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_PRLO);
+	return ndlp->nlp_state;
+}
+
+static uint32_t
+lpfc_device_recov_mapped_node(struct lpfc_vport *vport,
+			      struct lpfc_nodelist *ndlp,
+			      void *arg,
+			      uint32_t evt)
+{
+	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
+
+	ndlp->nlp_prev_state = NLP_STE_MAPPED_NODE;
+	lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
+	spin_lock_irq(shost->host_lock);
+	ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
+	spin_unlock_irq(shost->host_lock);
+	lpfc_disc_set_adisc(vport, ndlp);
+	return ndlp->nlp_state;
+}
+
+static uint32_t
+lpfc_rcv_plogi_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
+			void *arg, uint32_t evt)
+{
+	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
+	struct lpfc_iocbq *cmdiocb  = (struct lpfc_iocbq *) arg;
+
+	/* Ignore PLOGI if we have an outstanding LOGO */
+	if (ndlp->nlp_flag & (NLP_LOGO_SND | NLP_LOGO_ACC))
+		return ndlp->nlp_state;
+	if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
+		lpfc_cancel_retry_delay_tmo(vport, ndlp);
+		spin_lock_irq(shost->host_lock);
+		ndlp->nlp_flag &= ~(NLP_NPR_ADISC | NLP_NPR_2B_DISC);
+		spin_unlock_irq(shost->host_lock);
+	} else if (!(ndlp->nlp_flag & NLP_NPR_2B_DISC)) {
+		/* send PLOGI immediately, move to PLOGI issue state */
+		if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
+			ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
+			lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
+			lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
+		}
+	}
+	return ndlp->nlp_state;
+}
+
+static uint32_t
+lpfc_rcv_prli_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
+		       void *arg, uint32_t evt)
+{
+	struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
+	struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
+	struct ls_rjt     stat;
+
+	memset(&stat, 0, sizeof (struct ls_rjt));
+	stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
+	stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
+	lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
+
+	if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
+		if (ndlp->nlp_flag & NLP_NPR_ADISC) {
+			spin_lock_irq(shost->host_lock);
+			ndlp->nlp_flag &= ~NLP_NPR_ADISC;
+			ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
+			spin_unlock_irq(shost->host_lock);
+			lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
+			lpfc_issue_els_adisc(vport, ndlp, 0);
+		} else {
+			ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
+			lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
+			lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
+		}
+	}
+	return ndlp->nlp_state;
+}
+
+static uint32_t
+lpfc_rcv_logo_npr_node(struct lpfc_vport *vport,  struct lpfc_nodelist *ndlp,
+		       void *arg, uint32_t evt)
+{
+	struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
+
+	lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
+	return ndlp->nlp_state;
+}
+
+static uint32_t
+lpfc_rcv_padisc_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
+			 void *arg, uint32_t evt)
+{
+	struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
+
+	lpfc_rcv_padisc(vport, ndlp, cmdiocb);
+	/*
+	 * Do not start discovery if discovery is about to start
+	 * or discovery in progress for this node. Starting discovery
+	 * here will affect the counting of discovery threads.
+	 */
+	if (!(ndlp->nlp_flag & NLP_DELAY_TMO) &&
+	    !(ndlp->nlp_flag & NLP_NPR_2B_DISC)) {
+		if (ndlp->nlp_flag & NLP_NPR_ADISC) {
+			ndlp->nlp_flag &= ~NLP_NPR_ADISC;
+			ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
+			lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
+			lpfc_issue_els_adisc(vport, ndlp, 0);
+		} else {
+			ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
+			lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
+			lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
+		}
+	}
+	return ndlp->nlp_state;
+}
+
+static uint32_t
+lpfc_rcv_prlo_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
+		       void *arg, uint32_t evt)
+{
+	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
+	struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
+
+	spin_lock_irq(shost->host_lock);
+	ndlp->nlp_flag |= NLP_LOGO_ACC;
+	spin_unlock_irq(shost->host_lock);
+
+	lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
+
+	if ((ndlp->nlp_flag & NLP_DELAY_TMO) == 0) {
+		mod_timer(&ndlp->nlp_delayfunc,
+			  jiffies + msecs_to_jiffies(1000 * 1));
+		spin_lock_irq(shost->host_lock);
+		ndlp->nlp_flag |= NLP_DELAY_TMO;
+		ndlp->nlp_flag &= ~NLP_NPR_ADISC;
+		spin_unlock_irq(shost->host_lock);
+		ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
+	} else {
+		spin_lock_irq(shost->host_lock);
+		ndlp->nlp_flag &= ~NLP_NPR_ADISC;
+		spin_unlock_irq(shost->host_lock);
+	}
+	return ndlp->nlp_state;
+}
+
+static uint32_t
+lpfc_cmpl_plogi_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
+			 void *arg, uint32_t evt)
+{
+	struct lpfc_iocbq *cmdiocb, *rspiocb;
+	IOCB_t *irsp;
+	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
+
+	cmdiocb = (struct lpfc_iocbq *) arg;
+	rspiocb = cmdiocb->context_un.rsp_iocb;
+
+	irsp = &rspiocb->iocb;
+	if (irsp->ulpStatus) {
+		spin_lock_irq(shost->host_lock);
+		ndlp->nlp_flag |= NLP_DEFER_RM;
+		spin_unlock_irq(shost->host_lock);
+		return NLP_STE_FREED_NODE;
+	}
+	return ndlp->nlp_state;
+}
+
+static uint32_t
+lpfc_cmpl_prli_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
+			void *arg, uint32_t evt)
+{
+	struct lpfc_iocbq *cmdiocb, *rspiocb;
+	IOCB_t *irsp;
+
+	cmdiocb = (struct lpfc_iocbq *) arg;
+	rspiocb = cmdiocb->context_un.rsp_iocb;
+
+	irsp = &rspiocb->iocb;
+	if (irsp->ulpStatus && (ndlp->nlp_flag & NLP_NODEV_REMOVE)) {
+		lpfc_drop_node(vport, ndlp);
+		return NLP_STE_FREED_NODE;
+	}
+	return ndlp->nlp_state;
+}
+
+static uint32_t
+lpfc_cmpl_logo_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
+			void *arg, uint32_t evt)
+{
+	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
+
+	/* For the fabric port just clear the fc flags. */
+	if (ndlp->nlp_DID == Fabric_DID) {
+		spin_lock_irq(shost->host_lock);
+		vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
+		spin_unlock_irq(shost->host_lock);
+	}
+	lpfc_unreg_rpi(vport, ndlp);
+	return ndlp->nlp_state;
+}
+
+static uint32_t
+lpfc_cmpl_adisc_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
+			 void *arg, uint32_t evt)
+{
+	struct lpfc_iocbq *cmdiocb, *rspiocb;
+	IOCB_t *irsp;
+
+	cmdiocb = (struct lpfc_iocbq *) arg;
+	rspiocb = cmdiocb->context_un.rsp_iocb;
+
+	irsp = &rspiocb->iocb;
+	if (irsp->ulpStatus && (ndlp->nlp_flag & NLP_NODEV_REMOVE)) {
+		lpfc_drop_node(vport, ndlp);
+		return NLP_STE_FREED_NODE;
+	}
+	return ndlp->nlp_state;
+}
+
+static uint32_t
+lpfc_cmpl_reglogin_npr_node(struct lpfc_vport *vport,
+			    struct lpfc_nodelist *ndlp,
+			    void *arg, uint32_t evt)
+{
+	LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
+	MAILBOX_t    *mb = &pmb->u.mb;
+
+	if (!mb->mbxStatus) {
+		/* SLI4 ports have preallocated logical rpis. */
+		if (vport->phba->sli_rev < LPFC_SLI_REV4)
+			ndlp->nlp_rpi = mb->un.varWords[0];
+		ndlp->nlp_flag |= NLP_RPI_REGISTERED;
+	} else {
+		if (ndlp->nlp_flag & NLP_NODEV_REMOVE) {
+			lpfc_drop_node(vport, ndlp);
+			return NLP_STE_FREED_NODE;
+		}
+	}
+	return ndlp->nlp_state;
+}
+
+static uint32_t
+lpfc_device_rm_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
+			void *arg, uint32_t evt)
+{
+	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
+
+	if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
+		spin_lock_irq(shost->host_lock);
+		ndlp->nlp_flag |= NLP_NODEV_REMOVE;
+		spin_unlock_irq(shost->host_lock);
+		return ndlp->nlp_state;
+	}
+	lpfc_drop_node(vport, ndlp);
+	return NLP_STE_FREED_NODE;
+}
+
+static uint32_t
+lpfc_device_recov_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
+			   void *arg, uint32_t evt)
+{
+	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
+
+	/* Don't do anything that will mess up processing of the
+	 * previous RSCN.
+	 */
+	if (vport->fc_flag & FC_RSCN_DEFERRED)
+		return ndlp->nlp_state;
+
+	lpfc_cancel_retry_delay_tmo(vport, ndlp);
+	spin_lock_irq(shost->host_lock);
+	ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
+	spin_unlock_irq(shost->host_lock);
+	return ndlp->nlp_state;
+}
+
+
+/* This next section defines the NPort Discovery State Machine */
+
+/* There are 4 different double linked lists nodelist entries can reside on.
+ * The plogi list and adisc list are used when Link Up discovery or RSCN
+ * processing is needed. Each list holds the nodes that we will send PLOGI
+ * or ADISC on. These lists will keep track of what nodes will be effected
+ * by an RSCN, or a Link Up (Typically, all nodes are effected on Link Up).
+ * The unmapped_list will contain all nodes that we have successfully logged
+ * into at the Fibre Channel level. The mapped_list will contain all nodes
+ * that are mapped FCP targets.
+ */
+/*
+ * The bind list is a list of undiscovered (potentially non-existent) nodes
+ * that we have saved binding information on. This information is used when
+ * nodes transition from the unmapped to the mapped list.
+ */
+/* For UNUSED_NODE state, the node has just been allocated .
+ * For PLOGI_ISSUE and REG_LOGIN_ISSUE, the node is on
+ * the PLOGI list. For REG_LOGIN_COMPL, the node is taken off the PLOGI list
+ * and put on the unmapped list. For ADISC processing, the node is taken off
+ * the ADISC list and placed on either the mapped or unmapped list (depending
+ * on its previous state). Once on the unmapped list, a PRLI is issued and the
+ * state changed to PRLI_ISSUE. When the PRLI completion occurs, the state is
+ * changed to UNMAPPED_NODE. If the completion indicates a mapped
+ * node, the node is taken off the unmapped list. The binding list is checked
+ * for a valid binding, or a binding is automatically assigned. If binding
+ * assignment is unsuccessful, the node is left on the unmapped list. If
+ * binding assignment is successful, the associated binding list entry (if
+ * any) is removed, and the node is placed on the mapped list.
+ */
+/*
+ * For a Link Down, all nodes on the ADISC, PLOGI, unmapped or mapped
+ * lists will receive a DEVICE_RECOVERY event. If the linkdown or devloss timers
+ * expire, all effected nodes will receive a DEVICE_RM event.
+ */
+/*
+ * For a Link Up or RSCN, all nodes will move from the mapped / unmapped lists
+ * to either the ADISC or PLOGI list.  After a Nameserver query or ALPA loopmap
+ * check, additional nodes may be added or removed (via DEVICE_RM) to / from
+ * the PLOGI or ADISC lists. Once the PLOGI and ADISC lists are populated,
+ * we will first process the ADISC list.  32 entries are processed initially and
+ * ADISC is initited for each one.  Completions / Events for each node are
+ * funnelled thru the state machine.  As each node finishes ADISC processing, it
+ * starts ADISC for any nodes waiting for ADISC processing. If no nodes are
+ * waiting, and the ADISC list count is identically 0, then we are done. For
+ * Link Up discovery, since all nodes on the PLOGI list are UNREG_LOGIN'ed, we
+ * can issue a CLEAR_LA and reenable Link Events. Next we will process the PLOGI
+ * list.  32 entries are processed initially and PLOGI is initited for each one.
+ * Completions / Events for each node are funnelled thru the state machine.  As
+ * each node finishes PLOGI processing, it starts PLOGI for any nodes waiting
+ * for PLOGI processing. If no nodes are waiting, and the PLOGI list count is
+ * indentically 0, then we are done. We have now completed discovery / RSCN
+ * handling. Upon completion, ALL nodes should be on either the mapped or
+ * unmapped lists.
+ */
+
+static uint32_t (*lpfc_disc_action[NLP_STE_MAX_STATE * NLP_EVT_MAX_EVENT])
+     (struct lpfc_vport *, struct lpfc_nodelist *, void *, uint32_t) = {
+	/* Action routine                  Event       Current State  */
+	lpfc_rcv_plogi_unused_node,	/* RCV_PLOGI   UNUSED_NODE    */
+	lpfc_rcv_els_unused_node,	/* RCV_PRLI        */
+	lpfc_rcv_logo_unused_node,	/* RCV_LOGO        */
+	lpfc_rcv_els_unused_node,	/* RCV_ADISC       */
+	lpfc_rcv_els_unused_node,	/* RCV_PDISC       */
+	lpfc_rcv_els_unused_node,	/* RCV_PRLO        */
+	lpfc_disc_illegal,		/* CMPL_PLOGI      */
+	lpfc_disc_illegal,		/* CMPL_PRLI       */
+	lpfc_cmpl_logo_unused_node,	/* CMPL_LOGO       */
+	lpfc_disc_illegal,		/* CMPL_ADISC      */
+	lpfc_disc_illegal,		/* CMPL_REG_LOGIN  */
+	lpfc_device_rm_unused_node,	/* DEVICE_RM       */
+	lpfc_device_recov_unused_node,	/* DEVICE_RECOVERY */
+
+	lpfc_rcv_plogi_plogi_issue,	/* RCV_PLOGI   PLOGI_ISSUE    */
+	lpfc_rcv_prli_plogi_issue,	/* RCV_PRLI        */
+	lpfc_rcv_logo_plogi_issue,	/* RCV_LOGO        */
+	lpfc_rcv_els_plogi_issue,	/* RCV_ADISC       */
+	lpfc_rcv_els_plogi_issue,	/* RCV_PDISC       */
+	lpfc_rcv_els_plogi_issue,	/* RCV_PRLO        */
+	lpfc_cmpl_plogi_plogi_issue,	/* CMPL_PLOGI      */
+	lpfc_disc_illegal,		/* CMPL_PRLI       */
+	lpfc_cmpl_logo_plogi_issue,	/* CMPL_LOGO       */
+	lpfc_disc_illegal,		/* CMPL_ADISC      */
+	lpfc_cmpl_reglogin_plogi_issue,/* CMPL_REG_LOGIN  */
+	lpfc_device_rm_plogi_issue,	/* DEVICE_RM       */
+	lpfc_device_recov_plogi_issue,	/* DEVICE_RECOVERY */
+
+	lpfc_rcv_plogi_adisc_issue,	/* RCV_PLOGI   ADISC_ISSUE    */
+	lpfc_rcv_prli_adisc_issue,	/* RCV_PRLI        */
+	lpfc_rcv_logo_adisc_issue,	/* RCV_LOGO        */
+	lpfc_rcv_padisc_adisc_issue,	/* RCV_ADISC       */
+	lpfc_rcv_padisc_adisc_issue,	/* RCV_PDISC       */
+	lpfc_rcv_prlo_adisc_issue,	/* RCV_PRLO        */
+	lpfc_disc_illegal,		/* CMPL_PLOGI      */
+	lpfc_disc_illegal,		/* CMPL_PRLI       */
+	lpfc_disc_illegal,		/* CMPL_LOGO       */
+	lpfc_cmpl_adisc_adisc_issue,	/* CMPL_ADISC      */
+	lpfc_disc_illegal,		/* CMPL_REG_LOGIN  */
+	lpfc_device_rm_adisc_issue,	/* DEVICE_RM       */
+	lpfc_device_recov_adisc_issue,	/* DEVICE_RECOVERY */
+
+	lpfc_rcv_plogi_reglogin_issue,	/* RCV_PLOGI  REG_LOGIN_ISSUE */
+	lpfc_rcv_prli_reglogin_issue,	/* RCV_PLOGI       */
+	lpfc_rcv_logo_reglogin_issue,	/* RCV_LOGO        */
+	lpfc_rcv_padisc_reglogin_issue,	/* RCV_ADISC       */
+	lpfc_rcv_padisc_reglogin_issue,	/* RCV_PDISC       */
+	lpfc_rcv_prlo_reglogin_issue,	/* RCV_PRLO        */
+	lpfc_cmpl_plogi_illegal,	/* CMPL_PLOGI      */
+	lpfc_disc_illegal,		/* CMPL_PRLI       */
+	lpfc_disc_illegal,		/* CMPL_LOGO       */
+	lpfc_disc_illegal,		/* CMPL_ADISC      */
+	lpfc_cmpl_reglogin_reglogin_issue,/* CMPL_REG_LOGIN  */
+	lpfc_device_rm_reglogin_issue,	/* DEVICE_RM       */
+	lpfc_device_recov_reglogin_issue,/* DEVICE_RECOVERY */
+
+	lpfc_rcv_plogi_prli_issue,	/* RCV_PLOGI   PRLI_ISSUE     */
+	lpfc_rcv_prli_prli_issue,	/* RCV_PRLI        */
+	lpfc_rcv_logo_prli_issue,	/* RCV_LOGO        */
+	lpfc_rcv_padisc_prli_issue,	/* RCV_ADISC       */
+	lpfc_rcv_padisc_prli_issue,	/* RCV_PDISC       */
+	lpfc_rcv_prlo_prli_issue,	/* RCV_PRLO        */
+	lpfc_cmpl_plogi_illegal,	/* CMPL_PLOGI      */
+	lpfc_cmpl_prli_prli_issue,	/* CMPL_PRLI       */
+	lpfc_disc_illegal,		/* CMPL_LOGO       */
+	lpfc_disc_illegal,		/* CMPL_ADISC      */
+	lpfc_disc_illegal,		/* CMPL_REG_LOGIN  */
+	lpfc_device_rm_prli_issue,	/* DEVICE_RM       */
+	lpfc_device_recov_prli_issue,	/* DEVICE_RECOVERY */
+
+	lpfc_rcv_plogi_logo_issue,	/* RCV_PLOGI   LOGO_ISSUE     */
+	lpfc_rcv_prli_logo_issue,	/* RCV_PRLI        */
+	lpfc_rcv_logo_logo_issue,	/* RCV_LOGO        */
+	lpfc_rcv_padisc_logo_issue,	/* RCV_ADISC       */
+	lpfc_rcv_padisc_logo_issue,	/* RCV_PDISC       */
+	lpfc_rcv_prlo_logo_issue,	/* RCV_PRLO        */
+	lpfc_cmpl_plogi_illegal,	/* CMPL_PLOGI      */
+	lpfc_disc_illegal,		/* CMPL_PRLI       */
+	lpfc_cmpl_logo_logo_issue,	/* CMPL_LOGO       */
+	lpfc_disc_illegal,		/* CMPL_ADISC      */
+	lpfc_disc_illegal,		/* CMPL_REG_LOGIN  */
+	lpfc_device_rm_logo_issue,	/* DEVICE_RM       */
+	lpfc_device_recov_logo_issue,	/* DEVICE_RECOVERY */
+
+	lpfc_rcv_plogi_unmap_node,	/* RCV_PLOGI   UNMAPPED_NODE  */
+	lpfc_rcv_prli_unmap_node,	/* RCV_PRLI        */
+	lpfc_rcv_logo_unmap_node,	/* RCV_LOGO        */
+	lpfc_rcv_padisc_unmap_node,	/* RCV_ADISC       */
+	lpfc_rcv_padisc_unmap_node,	/* RCV_PDISC       */
+	lpfc_rcv_prlo_unmap_node,	/* RCV_PRLO        */
+	lpfc_disc_illegal,		/* CMPL_PLOGI      */
+	lpfc_disc_illegal,		/* CMPL_PRLI       */
+	lpfc_disc_illegal,		/* CMPL_LOGO       */
+	lpfc_disc_illegal,		/* CMPL_ADISC      */
+	lpfc_disc_illegal,		/* CMPL_REG_LOGIN  */
+	lpfc_disc_illegal,		/* DEVICE_RM       */
+	lpfc_device_recov_unmap_node,	/* DEVICE_RECOVERY */
+
+	lpfc_rcv_plogi_mapped_node,	/* RCV_PLOGI   MAPPED_NODE    */
+	lpfc_rcv_prli_mapped_node,	/* RCV_PRLI        */
+	lpfc_rcv_logo_mapped_node,	/* RCV_LOGO        */
+	lpfc_rcv_padisc_mapped_node,	/* RCV_ADISC       */
+	lpfc_rcv_padisc_mapped_node,	/* RCV_PDISC       */
+	lpfc_rcv_prlo_mapped_node,	/* RCV_PRLO        */
+	lpfc_disc_illegal,		/* CMPL_PLOGI      */
+	lpfc_disc_illegal,		/* CMPL_PRLI       */
+	lpfc_disc_illegal,		/* CMPL_LOGO       */
+	lpfc_disc_illegal,		/* CMPL_ADISC      */
+	lpfc_disc_illegal,		/* CMPL_REG_LOGIN  */
+	lpfc_disc_illegal,		/* DEVICE_RM       */
+	lpfc_device_recov_mapped_node,	/* DEVICE_RECOVERY */
+
+	lpfc_rcv_plogi_npr_node,        /* RCV_PLOGI   NPR_NODE    */
+	lpfc_rcv_prli_npr_node,         /* RCV_PRLI        */
+	lpfc_rcv_logo_npr_node,         /* RCV_LOGO        */
+	lpfc_rcv_padisc_npr_node,       /* RCV_ADISC       */
+	lpfc_rcv_padisc_npr_node,       /* RCV_PDISC       */
+	lpfc_rcv_prlo_npr_node,         /* RCV_PRLO        */
+	lpfc_cmpl_plogi_npr_node,	/* CMPL_PLOGI      */
+	lpfc_cmpl_prli_npr_node,	/* CMPL_PRLI       */
+	lpfc_cmpl_logo_npr_node,        /* CMPL_LOGO       */
+	lpfc_cmpl_adisc_npr_node,       /* CMPL_ADISC      */
+	lpfc_cmpl_reglogin_npr_node,    /* CMPL_REG_LOGIN  */
+	lpfc_device_rm_npr_node,        /* DEVICE_RM       */
+	lpfc_device_recov_npr_node,     /* DEVICE_RECOVERY */
+};
+
+int
+lpfc_disc_state_machine(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
+			void *arg, uint32_t evt)
+{
+	uint32_t cur_state, rc;
+	uint32_t(*func) (struct lpfc_vport *, struct lpfc_nodelist *, void *,
+			 uint32_t);
+	uint32_t got_ndlp = 0;
+
+	if (lpfc_nlp_get(ndlp))
+		got_ndlp = 1;
+
+	cur_state = ndlp->nlp_state;
+
+	/* DSM in event <evt> on NPort <nlp_DID> in state <cur_state> */
+	lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
+			 "0211 DSM in event x%x on NPort x%x in "
+			 "state %d Data: x%x\n",
+			 evt, ndlp->nlp_DID, cur_state, ndlp->nlp_flag);
+
+	lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
+		 "DSM in:          evt:%d ste:%d did:x%x",
+		evt, cur_state, ndlp->nlp_DID);
+
+	func = lpfc_disc_action[(cur_state * NLP_EVT_MAX_EVENT) + evt];
+	rc = (func) (vport, ndlp, arg, evt);
+
+	/* DSM out state <rc> on NPort <nlp_DID> */
+	if (got_ndlp) {
+		lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
+			 "0212 DSM out state %d on NPort x%x Data: x%x\n",
+			 rc, ndlp->nlp_DID, ndlp->nlp_flag);
+
+		lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
+			"DSM out:         ste:%d did:x%x flg:x%x",
+			rc, ndlp->nlp_DID, ndlp->nlp_flag);
+		/* Decrement the ndlp reference count held for this function */
+		lpfc_nlp_put(ndlp);
+	} else {
+		lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
+			"0213 DSM out state %d on NPort free\n", rc);
+
+		lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
+			"DSM out:         ste:%d did:x%x flg:x%x",
+			rc, 0, 0);
+	}
+
+	return rc;
+}