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

 /*******************************************************************
  * This file is part of the Emulex Linux Device Driver for         *
  * Fibre Channel Host Bus Adapters.                                *
  * Copyright (C) 2017-2022 Broadcom. All Rights Reserved. The term *
  * “Broadcom” refers to Broadcom Inc. and/or its subsidiaries.     *
  * Copyright (C) 2004-2016 Emulex.  All rights reserved.           *
  * EMULEX and SLI are trademarks of Emulex.                        *
  * www.broadcom.com                                                *
  * Portions Copyright (C) 2004-2005 Christoph Hellwig              *
  *                                                                 *
  * This program is free software; you can redistribute it and/or   *
  * modify it under the terms of version 2 of the GNU General       *
  * Public License as published by the Free Software Foundation.    *
  * This program is distributed in the hope that it will be useful. *
  * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND          *
  * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY,  *
  * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE      *
  * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *
  * TO BE LEGALLY INVALID.  See the GNU General Public License for  *
  * more details, a copy of which can be found in the file COPYING  *
  * included with this package.                                     *
  *******************************************************************/
 
 #include <linux/blkdev.h>
 #include <linux/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 <scsi/fc/fc_fs.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.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"
 
 
 /* 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_TRACE_EVENT,
              "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;
     u32 ulp_status = get_job_ulpstatus(phba, rspiocb);
 
     pcmd = cmdiocb->cmd_dmabuf;
 
     /* For lpfc_els_abort, cmd_dmabuf 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 ulp_status error since we are returning NULL ptr */
         if (!(ulp_status)) {
             if (phba->sli_rev == LPFC_SLI_REV4) {
                 bf_set(lpfc_wcqe_c_status, &rspiocb->wcqe_cmpl,
                        IOSTAT_LOCAL_REJECT);
                 rspiocb->wcqe_cmpl.parameter = IOERR_SLI_ABORTED;
             } else {
                 rspiocb->iocb.ulpStatus = IOSTAT_LOCAL_REJECT;
                 rspiocb->iocb.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".
  */
 void
 lpfc_els_abort(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
 {
     LIST_HEAD(abort_list);
     struct lpfc_sli_ring *pring;
     struct lpfc_iocbq *iocb, *next_iocb;
 
     pring = lpfc_phba_elsring(phba);
 
     /* In case of error recovery path, we might have a NULL pring here */
     if (unlikely(!pring))
         return;
 
     /* 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, NULL);
             spin_unlock_irq(&phba->hbalock);
     }
     /* Make sure HBA is alive */
     lpfc_issue_hb_tmo(phba);
 
     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);
 }
 
 /* lpfc_defer_plogi_acc - Issue PLOGI ACC after reg_login completes
  * @phba: pointer to lpfc hba data structure.
  * @login_mbox: pointer to REG_RPI mailbox object
  *
  * The ACC for a rcv'ed PLOGI is deferred until AFTER the REG_RPI completes
  */
 static void
 lpfc_defer_plogi_acc(struct lpfc_hba *phba, LPFC_MBOXQ_t *login_mbox)
 {
     struct lpfc_iocbq *save_iocb;
     struct lpfc_nodelist *ndlp;
     MAILBOX_t *mb = &login_mbox->u.mb;
 
     int rc;
 
     ndlp = login_mbox->ctx_ndlp;
     save_iocb = login_mbox->context3;
 
     if (mb->mbxStatus == MBX_SUCCESS) {
         /* Now that REG_RPI completed successfully,
          * we can now proceed with sending the PLOGI ACC.
          */
         rc = lpfc_els_rsp_acc(login_mbox->vport, ELS_CMD_PLOGI,
                       save_iocb, ndlp, NULL);
         if (rc) {
             lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                     "4576 PLOGI ACC fails pt2pt discovery: "
                     "DID %x Data: %x\n", ndlp->nlp_DID, rc);
         }
     }
 
     /* Now process the REG_RPI cmpl */
     lpfc_mbx_cmpl_reg_login(phba, login_mbox);
     ndlp->nlp_flag &= ~NLP_ACC_REGLOGIN;
     kfree(save_iocb);
 }
 
 static int
 lpfc_rcv_plogi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
            struct lpfc_iocbq *cmdiocb)
 {
     struct lpfc_hba    *phba = vport->phba;
     struct lpfc_dmabuf *pcmd;
     uint64_t nlp_portwwn = 0;
     uint32_t *lp;
     union lpfc_wqe128 *wqe;
     IOCB_t *icmd;
     struct serv_parm *sp;
     uint32_t ed_tov;
     LPFC_MBOXQ_t *link_mbox;
     LPFC_MBOXQ_t *login_mbox;
     struct lpfc_iocbq *save_iocb;
     struct ls_rjt stat;
     uint32_t vid, flag;
     int rc;
     u32 remote_did;
 
     memset(&stat, 0, sizeof (struct ls_rjt));
     pcmd = cmdiocb->cmd_dmabuf;
     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_TRACE_EVENT,
                  "0140 PLOGI Reject: invalid pname\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_TRACE_EVENT,
                  "0141 PLOGI Reject: invalid nname\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;
     }
 
     if (phba->sli_rev == LPFC_SLI_REV4)
         wqe = &cmdiocb->wqe;
     else
         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;
         fallthrough;
     case  NLP_STE_REG_LOGIN_ISSUE:
     case  NLP_STE_PRLI_ISSUE:
     case  NLP_STE_UNMAPPED_NODE:
     case  NLP_STE_MAPPED_NODE:
         /* For initiators, lpfc_plogi_confirm_nport skips fabric did.
          * For target mode, execute implicit logo.
          * Fabric nodes go into NPR.
          */
         if (!(ndlp->nlp_type & NLP_FABRIC) &&
             !(phba->nvmet_support)) {
             /* Clear ndlp info, since follow up PRLI may have
              * updated ndlp information
              */
             ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
             ndlp->nlp_type &= ~(NLP_NVME_TARGET | NLP_NVME_INITIATOR);
             ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE;
             ndlp->nlp_nvme_info &= ~NLP_NVME_NSLER;
             ndlp->nlp_flag &= ~NLP_FIRSTBURST;
 
             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_TRACE_EVENT,
                      "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));
 
         /* 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);
 
         ndlp->nlp_prev_state = ndlp->nlp_state;
         /* rport needs to be unregistered first */
         lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
         break;
     }
 
     ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
     ndlp->nlp_type &= ~(NLP_NVME_TARGET | NLP_NVME_INITIATOR);
     ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE;
     ndlp->nlp_nvme_info &= ~NLP_NVME_NSLER;
     ndlp->nlp_flag &= ~NLP_FIRSTBURST;
 
     login_mbox = NULL;
     link_mbox = NULL;
     save_iocb = NULL;
 
     /* 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 */
         if (phba->sli_rev == LPFC_SLI_REV4) {
             vport->fc_myDID = bf_get(els_rsp64_sid,
                          &cmdiocb->wqe.xmit_els_rsp);
         } else {
             vport->fc_myDID = icmd->un.rcvels.parmRo;
         }
 
         /* If there is an outstanding FLOGI, abort it now.
          * The remote NPort is not going to ACC our FLOGI
          * if its already issuing a PLOGI for pt2pt mode.
          * This indicates our FLOGI was dropped; however, we
          * must have ACCed the remote NPorts FLOGI to us
          * to make it here.
          */
         if (phba->hba_flag & HBA_FLOGI_OUTSTANDING)
             lpfc_els_abort_flogi(phba);
 
         ed_tov = be32_to_cpu(sp->cmn.e_d_tov);
         if (sp->cmn.edtovResolution) {
             /* E_D_TOV ticks are in nanoseconds */
             ed_tov = (phba->fc_edtov + 999999) / 1000000;
         }
 
         /*
          * For pt-to-pt, use the larger EDTOV
          * RATOV = 2 * EDTOV
          */
         if (ed_tov > phba->fc_edtov)
             phba->fc_edtov = ed_tov;
         phba->fc_ratov = (2 * phba->fc_edtov) / 1000;
 
         memcpy(&phba->fc_fabparam, sp, sizeof(struct serv_parm));
 
         /* Issue CONFIG_LINK for SLI3 or REG_VFI for SLI4,
          * to account for updated TOV's / parameters
          */
         if (phba->sli_rev == LPFC_SLI_REV4)
             lpfc_issue_reg_vfi(vport);
         else {
             link_mbox = mempool_alloc(phba->mbox_mem_pool,
                           GFP_KERNEL);
             if (!link_mbox)
                 goto out;
             lpfc_config_link(phba, link_mbox);
             link_mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
             link_mbox->vport = vport;
 
             /* The default completion handling for CONFIG_LINK
              * does not require the ndlp so no reference is needed.
              */
             link_mbox->ctx_ndlp = ndlp;
 
             rc = lpfc_sli_issue_mbox(phba, link_mbox, MBX_NOWAIT);
             if (rc == MBX_NOT_FINISHED) {
                 mempool_free(link_mbox, phba->mbox_mem_pool);
                 goto out;
             }
         }
 
         lpfc_can_disctmo(vport);
     }
 
     ndlp->nlp_flag &= ~NLP_SUPPRESS_RSP;
     if ((phba->sli.sli_flag & LPFC_SLI_SUPPRESS_RSP) &&
         sp->cmn.valid_vendor_ver_level) {
         vid = be32_to_cpu(sp->un.vv.vid);
         flag = be32_to_cpu(sp->un.vv.flags);
         if ((vid == LPFC_VV_EMLX_ID) && (flag & LPFC_VV_SUPPRESS_RSP))
             ndlp->nlp_flag |= NLP_SUPPRESS_RSP;
     }
 
     login_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
     if (!login_mbox)
         goto out;
 
     save_iocb = kzalloc(sizeof(*save_iocb), GFP_KERNEL);
     if (!save_iocb)
         goto out;
 
     /* Save info from cmd IOCB to be used in rsp after all mbox completes */
     memcpy((uint8_t *)save_iocb, (uint8_t *)cmdiocb,
            sizeof(struct lpfc_iocbq));
 
     /* Registering an existing RPI behaves differently for SLI3 vs SLI4 */
     if (phba->sli_rev == LPFC_SLI_REV4)
         lpfc_unreg_rpi(vport, ndlp);
 
     /* Issue REG_LOGIN first, before ACCing the PLOGI, thus we will
      * always be deferring the ACC.
      */
     if (phba->sli_rev == LPFC_SLI_REV4)
         remote_did = bf_get(wqe_els_did, &wqe->xmit_els_rsp.wqe_dest);
     else
         remote_did = icmd->un.rcvels.remoteID;
     rc = lpfc_reg_rpi(phba, vport->vpi, remote_did,
                 (uint8_t *)sp, login_mbox, ndlp->nlp_rpi);
     if (rc)
         goto out;
 
     login_mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login;
     login_mbox->vport = vport;
 
     /*
      * 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.
      * This only applies to a fabric environment.
      */
     if ((ndlp->nlp_state == NLP_STE_PLOGI_ISSUE) &&
         (vport->fc_flag & FC_FABRIC)) {
         /* software abort outstanding PLOGI */
         lpfc_els_abort(phba, ndlp);
     }
 
     if ((vport->port_type == LPFC_NPIV_PORT &&
          vport->cfg_restrict_login)) {
 
         /* no deferred ACC */
         kfree(save_iocb);
 
         /* This is an NPIV SLI4 instance that does not need to register
          * a default RPI.
          */
         if (phba->sli_rev == LPFC_SLI_REV4) {
             lpfc_mbox_rsrc_cleanup(phba, login_mbox,
                            MBOX_THD_UNLOCKED);
             login_mbox = NULL;
         } else {
             /* 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(&ndlp->lock);
             ndlp->nlp_flag |= (NLP_RM_DFLT_RPI | NLP_ACC_REGLOGIN |
                        NLP_RCV_PLOGI);
             spin_unlock_irq(&ndlp->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, login_mbox);
         if (rc && login_mbox)
             lpfc_mbox_rsrc_cleanup(phba, login_mbox,
                            MBOX_THD_UNLOCKED);
         return 1;
     }
 
     /* So the order here should be:
      * SLI3 pt2pt
      *   Issue CONFIG_LINK mbox
      *   CONFIG_LINK cmpl
      * SLI4 pt2pt
      *   Issue REG_VFI mbox
      *   REG_VFI cmpl
      * SLI4
      *   Issue UNREG RPI mbx
      *   UNREG RPI cmpl
      * Issue REG_RPI mbox
      * REG RPI cmpl
      * Issue PLOGI ACC
      * PLOGI ACC cmpl
      */
     login_mbox->mbox_cmpl = lpfc_defer_plogi_acc;
     login_mbox->ctx_ndlp = lpfc_nlp_get(ndlp);
     if (!login_mbox->ctx_ndlp)
         goto out;
 
     login_mbox->context3 = save_iocb; /* For PLOGI ACC */
 
     spin_lock_irq(&ndlp->lock);
     ndlp->nlp_flag |= (NLP_ACC_REGLOGIN | NLP_RCV_PLOGI);
     spin_unlock_irq(&ndlp->lock);
 
     /* Start the ball rolling by issuing REG_LOGIN here */
     rc = lpfc_sli_issue_mbox(phba, login_mbox, MBX_NOWAIT);
     if (rc == MBX_NOT_FINISHED) {
         lpfc_nlp_put(ndlp);
         goto out;
     }
     lpfc_nlp_set_state(vport, ndlp, NLP_STE_REG_LOGIN_ISSUE);
 
     return 1;
 out:
     kfree(save_iocb);
     if (login_mbox)
         mempool_free(login_mbox, phba->mbox_mem_pool);
 
     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->ctx_buf;
     ndlp = (struct lpfc_nodelist *)mboxq->ctx_ndlp;
     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);
     }
 
     /* This nlp_put pairs with lpfc_sli4_resume_rpi */
     lpfc_nlp_put(ndlp);
 
     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 lpfc_hba *phba = vport->phba;
     struct lpfc_iocbq  *elsiocb;
     struct lpfc_dmabuf *pcmd;
     struct serv_parm   *sp;
     struct lpfc_name   *pnn, *ppn;
     struct ls_rjt stat;
     ADISC *ap;
     uint32_t *lp;
     uint32_t cmd;
 
     pcmd = cmdiocb->cmd_dmabuf;
     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;
     }
 
     if (get_job_ulpstatus(phba, cmdiocb) == 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.
          * It is possible an ADISC arrived and the remote nport
          * is already in MAPPED or UNMAPPED state.  Catch this
          * condition and don't set the nlp_state again because
          * it causes an unnecessary transport unregister/register.
          *
          * Nodes marked for ADISC will move MAPPED or UNMAPPED state
          * after issuing ADISC
          */
         if (ndlp->nlp_type & (NLP_FCP_TARGET | NLP_NVME_TARGET)) {
             if ((ndlp->nlp_state != NLP_STE_MAPPED_NODE) &&
                 !(ndlp->nlp_flag & NLP_NPR_ADISC))
                 lpfc_nlp_set_state(vport, ndlp,
                            NLP_STE_MAPPED_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(&ndlp->lock);
     ndlp->nlp_flag |= NLP_DELAY_TMO;
     spin_unlock_irq(&ndlp->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(&ndlp->lock);
     ndlp->nlp_flag |= NLP_LOGO_ACC;
     spin_unlock_irq(&ndlp->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);
 
     /* This clause allows the initiator to ACC the LOGO back to the
      * Fabric Domain Controller.  It does deliberately skip all other
      * steps because some fabrics send RDP requests after logging out
      * from the initiator.
      */
     if (ndlp->nlp_type & NLP_FABRIC &&
         ((ndlp->nlp_DID & WELL_KNOWN_DID_MASK) != WELL_KNOWN_DID_MASK))
         return 0;
 
     /* 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);
 
     if (ndlp->nlp_DID == Fabric_DID) {
         if (vport->port_state <= LPFC_FDISC ||
             vport->fc_flag & FC_PT2PT)
             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);
         }
 
         /*
          * Don't re-instantiate if vport is marked for deletion.
          * If we are here first then vport_delete is going to wait
          * for discovery to complete.
          */
         if (!(vport->load_flag & FC_UNLOADING) &&
                     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(&ndlp->lock);
             ndlp->nlp_flag |= NLP_DELAY_TMO;
             spin_unlock_irq(&ndlp->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_NVME_TARGET) ||
         (vport->fc_flag & FC_PT2PT))) ||
         (ndlp->nlp_state == NLP_STE_ADISC_ISSUE)) {
         /* Only try to re-login if this is NOT a Fabric Node
          * AND the remote NPORT is a FCP/NVME Target or we
          * are in pt2pt mode. NLP_STE_ADISC_ISSUE is a special
          * case for LOGO as a response to ADISC behavior.
          */
         mod_timer(&ndlp->nlp_delayfunc,
               jiffies + msecs_to_jiffies(1000 * 1));
         spin_lock_irq(&ndlp->lock);
         ndlp->nlp_flag |= NLP_DELAY_TMO;
         spin_unlock_irq(&ndlp->lock);
 
         ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
     }
 out:
     /* Unregister from backend, could have been skipped due to ADISC */
     lpfc_nlp_unreg_node(vport, ndlp);
 
     ndlp->nlp_prev_state = ndlp->nlp_state;
     lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
 
     spin_lock_irq(&ndlp->lock);
     ndlp->nlp_flag &= ~NLP_NPR_ADISC;
     spin_unlock_irq(&ndlp->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 uint32_t
 lpfc_rcv_prli_support_check(struct lpfc_vport *vport,
                 struct lpfc_nodelist *ndlp,
                 struct lpfc_iocbq *cmdiocb)
 {
     struct ls_rjt stat;
     uint32_t *payload;
     uint32_t cmd;
 
     payload = cmdiocb->cmd_dmabuf->virt;
     cmd = *payload;
     if (vport->phba->nvmet_support) {
         /* Must be a NVME PRLI */
         if (cmd ==  ELS_CMD_PRLI)
             goto out;
     } else {
         /* Initiator mode. */
         if (!vport->nvmei_support && (cmd == ELS_CMD_NVMEPRLI))
             goto out;
     }
     return 1;
 out:
     lpfc_printf_vlog(vport, KERN_WARNING, LOG_NVME_DISC,
              "6115 Rcv PRLI (%x) check failed: ndlp rpi %d "
              "state x%x flags x%x\n",
              cmd, ndlp->nlp_rpi, ndlp->nlp_state,
              ndlp->nlp_flag);
     memset(&stat, 0, sizeof(struct ls_rjt));
     stat.un.b.lsRjtRsnCode = LSRJT_CMD_UNSUPPORTED;
     stat.un.b.lsRjtRsnCodeExp = LSEXP_REQ_UNSUPPORTED;
     lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb,
                 ndlp, NULL);
     return 0;
 }
 
 static void
 lpfc_rcv_prli(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
           struct lpfc_iocbq *cmdiocb)
 {
     struct lpfc_hba  *phba = vport->phba;
     struct lpfc_dmabuf *pcmd;
     uint32_t *lp;
     PRLI *npr;
     struct fc_rport *rport = ndlp->rport;
     u32 roles;
 
     pcmd = cmdiocb->cmd_dmabuf;
     lp = (uint32_t *)pcmd->virt;
     npr = (PRLI *)((uint8_t *)lp + sizeof(uint32_t));
 
     if ((npr->prliType == PRLI_FCP_TYPE) ||
         (npr->prliType == PRLI_NVME_TYPE)) {
         if (npr->initiatorFunc) {
             if (npr->prliType == PRLI_FCP_TYPE)
                 ndlp->nlp_type |= NLP_FCP_INITIATOR;
             if (npr->prliType == PRLI_NVME_TYPE)
                 ndlp->nlp_type |= NLP_NVME_INITIATOR;
         }
         if (npr->targetFunc) {
             if (npr->prliType == PRLI_FCP_TYPE)
                 ndlp->nlp_type |= NLP_FCP_TARGET;
             if (npr->prliType == PRLI_NVME_TYPE)
                 ndlp->nlp_type |= NLP_NVME_TARGET;
             if (npr->writeXferRdyDis)
                 ndlp->nlp_flag |= NLP_FIRSTBURST;
         }
         if (npr->Retry && ndlp->nlp_type &
                     (NLP_FCP_INITIATOR | NLP_FCP_TARGET))
             ndlp->nlp_fcp_info |= NLP_FCP_2_DEVICE;
 
         if (npr->Retry && phba->nsler &&
             ndlp->nlp_type & (NLP_NVME_INITIATOR | NLP_NVME_TARGET))
             ndlp->nlp_nvme_info |= NLP_NVME_NSLER;
 
 
         /* If this driver is in nvme target mode, set the ndlp's fc4
          * type to NVME provided the PRLI response claims NVME FC4
          * type.  Target mode does not issue gft_id so doesn't get
          * the fc4 type set until now.
          */
         if (phba->nvmet_support && (npr->prliType == PRLI_NVME_TYPE)) {
             ndlp->nlp_fc4_type |= NLP_FC4_NVME;
             lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
         }
 
         /* Fabric Controllers send FCP PRLI as an initiator but should
          * not get recognized as FCP type and registered with transport.
          */
         if (npr->prliType == PRLI_FCP_TYPE &&
             !(ndlp->nlp_type & NLP_FABRIC))
             ndlp->nlp_fc4_type |= NLP_FC4_FCP;
     }
     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);
 
         if (vport->cfg_enable_fc4_type != LPFC_ENABLE_NVME)
             fc_remote_port_rolechg(rport, roles);
     }
 }
 
 static uint32_t
 lpfc_disc_set_adisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
 {
     if (!(ndlp->nlp_flag & NLP_RPI_REGISTERED)) {
         spin_lock_irq(&ndlp->lock);
         ndlp->nlp_flag &= ~NLP_NPR_ADISC;
         spin_unlock_irq(&ndlp->lock);
         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(&ndlp->lock);
             ndlp->nlp_flag |= NLP_NPR_ADISC;
             spin_unlock_irq(&ndlp->lock);
             return 1;
         }
     }
 
     spin_lock_irq(&ndlp->lock);
     ndlp->nlp_flag &= ~NLP_NPR_ADISC;
     spin_unlock_irq(&ndlp->lock);
     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.
  * @ndlp: Pointer to lpfc_nodelist structure.
  * @rpi  : rpi to be release.
  *
  * This function will send a unreg_login mailbox command to the firmware
  * to release a rpi.
  **/
 static void
 lpfc_release_rpi(struct lpfc_hba *phba, struct lpfc_vport *vport,
          struct lpfc_nodelist *ndlp, uint16_t rpi)
 {
     LPFC_MBOXQ_t *pmb;
     int rc;
 
     /* 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_DISCOVERY,
                  "1435 release_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);
         return;
     }
 
     pmb = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool,
             GFP_KERNEL);
     if (!pmb)
         lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
                  "2796 mailbox memory allocation failed \n");
     else {
         lpfc_unreg_login(phba, vport->vpi, rpi, pmb);
         pmb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
         pmb->vport = vport;
         pmb->ctx_ndlp = lpfc_nlp_get(ndlp);
         if (!pmb->ctx_ndlp) {
             mempool_free(pmb, phba->mbox_mem_pool);
             return;
         }
 
         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_DISCOVERY,
                  "1437 release_rpi UNREG x%x "
                  "on NPort x%x flg x%x\n",
                  ndlp->nlp_rpi, ndlp->nlp_DID, ndlp->nlp_flag);
 
         rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
         if (rc == MBX_NOT_FINISHED) {
             lpfc_nlp_put(ndlp);
             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;
     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)) {
         rpi = pmb->u.mb.un.varWords[0];
         lpfc_release_rpi(phba, vport, ndlp, rpi);
     }
     lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
              "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_TRACE_EVENT,
                  "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 lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
 
     spin_lock_irq(&ndlp->lock);
     ndlp->nlp_flag |= NLP_LOGO_ACC;
     spin_unlock_irq(&ndlp->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 = cmdiocb->cmd_dmabuf;
     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(&ndlp->lock);
             ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
             spin_unlock_irq(&ndlp->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;
 
     /* Retrieve RPI from LOGO IOCB. RPI is used for CMD_ABORT_XRI_CN */
     if (vport->phba->sli_rev == LPFC_SLI_REV3)
         ndlp->nlp_rpi = cmdiocb->iocb.ulpIoTag;
                 /* 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 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(&ndlp->lock);
     ndlp->nlp_flag |= NLP_DELAY_TMO;
     spin_unlock_irq(&ndlp->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 lpfc_iocbq  *cmdiocb, *rspiocb;
     struct lpfc_dmabuf *pcmd, *prsp;
     uint32_t *lp;
     uint32_t vid, flag;
     struct serv_parm *sp;
     uint32_t ed_tov;
     LPFC_MBOXQ_t *mbox;
     int rc;
     u32 ulp_status;
     u32 did;
 
     cmdiocb = (struct lpfc_iocbq *) arg;
     rspiocb = cmdiocb->rsp_iocb;
 
     ulp_status = get_job_ulpstatus(phba, rspiocb);
 
     if (ndlp->nlp_flag & NLP_ACC_REGLOGIN) {
         /* Recovery from PLOGI collision logic */
         return ndlp->nlp_state;
     }
 
     if (ulp_status)
         goto out;
 
     pcmd = cmdiocb->cmd_dmabuf;
 
     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_TRACE_EVENT,
                  "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;
 
     if ((vport->fc_flag & FC_PT2PT) &&
         (vport->fc_flag & FC_PT2PT_PLOGI)) {
         ed_tov = be32_to_cpu(sp->cmn.e_d_tov);
         if (sp->cmn.edtovResolution) {
             /* E_D_TOV ticks are in nanoseconds */
             ed_tov = (phba->fc_edtov + 999999) / 1000000;
         }
 
         ndlp->nlp_flag &= ~NLP_SUPPRESS_RSP;
         if ((phba->sli.sli_flag & LPFC_SLI_SUPPRESS_RSP) &&
             sp->cmn.valid_vendor_ver_level) {
             vid = be32_to_cpu(sp->un.vv.vid);
             flag = be32_to_cpu(sp->un.vv.flags);
             if ((vid == LPFC_VV_EMLX_ID) &&
                 (flag & LPFC_VV_SUPPRESS_RSP))
                 ndlp->nlp_flag |= NLP_SUPPRESS_RSP;
         }
 
         /*
          * Use the larger EDTOV
          * RATOV = 2 * EDTOV for pt-to-pt
          */
         if (ed_tov > phba->fc_edtov)
             phba->fc_edtov = ed_tov;
         phba->fc_ratov = (2 * phba->fc_edtov) / 1000;
 
         memcpy(&phba->fc_fabparam, sp, sizeof(struct serv_parm));
 
         /* Issue config_link / reg_vfi to account for updated TOV's */
         if (phba->sli_rev == LPFC_SLI_REV4) {
             lpfc_issue_reg_vfi(vport);
         } else {
             mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
             if (!mbox) {
                 lpfc_printf_vlog(vport, KERN_ERR,
                          LOG_TRACE_EVENT,
                          "0133 PLOGI: no memory "
                          "for config_link "
                          "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_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;
             }
         }
     }
 
     lpfc_unreg_rpi(vport, ndlp);
 
     mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
     if (!mbox) {
         lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
                  "0018 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;
     }
 
     did = get_job_els_rsp64_did(phba, cmdiocb);
 
     if (lpfc_reg_rpi(phba, vport->vpi, did,
              (uint8_t *) sp, mbox, ndlp->nlp_rpi) == 0) {
         switch (ndlp->nlp_DID) {
         case NameServer_DID:
             mbox->mbox_cmpl = lpfc_mbx_cmpl_ns_reg_login;
             /* Fabric Controller Node needs these parameters. */
             memcpy(&ndlp->fc_sparam, sp, sizeof(struct serv_parm));
             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->ctx_ndlp = lpfc_nlp_get(ndlp);
         if (!mbox->ctx_ndlp)
             goto out;
 
         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);
         lpfc_mbox_rsrc_cleanup(phba, mbox, MBOX_THD_UNLOCKED);
         lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
                  "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_TRACE_EVENT,
                  "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_TRACE_EVENT,
                  "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);
     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, ndlp, 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)
 {
     if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
         spin_lock_irq(&ndlp->lock);
         ndlp->nlp_flag |= NLP_NODEV_REMOVE;
         spin_unlock_irq(&ndlp->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 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(&ndlp->lock);
     ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
     spin_unlock_irq(&ndlp->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 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(&ndlp->lock);
             ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
             spin_unlock_irq(&ndlp->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;
 
     if (lpfc_rcv_prli_support_check(vport, ndlp, cmdiocb))
         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 lpfc_hba   *phba = vport->phba;
     struct lpfc_iocbq *cmdiocb, *rspiocb;
     ADISC *ap;
     int rc;
     u32 ulp_status;
 
     cmdiocb = (struct lpfc_iocbq *) arg;
     rspiocb = cmdiocb->rsp_iocb;
 
     ulp_status = get_job_ulpstatus(phba, rspiocb);
 
     ap = (ADISC *)lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb);
 
     if ((ulp_status) ||
         (!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(&ndlp->lock);
         ndlp->nlp_flag |= NLP_DELAY_TMO;
         spin_unlock_irq(&ndlp->lock);
         ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
 
         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_fc4_type |= NLP_FC4_FCP;
 
     if (ndlp->nlp_type & NLP_NVME_TARGET)
         ndlp->nlp_fc4_type |= NLP_FC4_NVME;
 
     if (ndlp->nlp_type & (NLP_FCP_TARGET | NLP_NVME_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)
 {
     if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
         spin_lock_irq(&ndlp->lock);
         ndlp->nlp_flag |= NLP_NODEV_REMOVE;
         spin_unlock_irq(&ndlp->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 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(&ndlp->lock);
     ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
     spin_unlock_irq(&ndlp->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;
     struct ls_rjt     stat;
 
     if (!lpfc_rcv_prli_support_check(vport, ndlp, cmdiocb)) {
         return ndlp->nlp_state;
     }
     if (vport->phba->nvmet_support) {
         /* NVME Target mode.  Handle and respond to the PRLI and
          * transition to UNMAPPED provided the RPI has completed
          * registration.
          */
         if (ndlp->nlp_flag & NLP_RPI_REGISTERED) {
             lpfc_rcv_prli(vport, ndlp, cmdiocb);
             lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
         } else {
             /* RPI registration has not completed. Reject the PRLI
              * to prevent an illegal state transition when the
              * rpi registration does complete.
              */
             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;
         }
     } else {
         /* Initiator mode. */
         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_nodelist *ns_ndlp;
 
     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->ctx_ndlp)) {
             ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND;
             lpfc_nlp_put(ndlp);
             mb->ctx_ndlp = 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->ctx_ndlp)) {
             ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND;
             lpfc_nlp_put(ndlp);
             list_del(&mb->list);
             phba->sli.mboxq_cnt--;
             lpfc_mbox_rsrc_cleanup(phba, mb, MBOX_THD_LOCKED);
         }
     }
     spin_unlock_irq(&phba->hbalock);
 
     /* software abort if any GID_FT is outstanding */
     if (vport->cfg_enable_fc4_type != LPFC_ENABLE_FCP) {
         ns_ndlp = lpfc_findnode_did(vport, NameServer_DID);
         if (ns_ndlp)
             lpfc_els_abort(phba, ns_ndlp);
     }
 
     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 lpfc_hba *phba = vport->phba;
     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_TRACE_EVENT,
                  "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(&ndlp->lock);
         ndlp->nlp_flag |= NLP_DELAY_TMO;
         spin_unlock_irq(&ndlp->lock);
         ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
 
         lpfc_issue_els_logo(vport, ndlp, 0);
         return ndlp->nlp_state;
     }
 
     /* SLI4 ports have preallocated logical rpis. */
     if (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 */
     lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
              "3066 RegLogin Complete on x%x x%x x%x\n",
              did, ndlp->nlp_type, ndlp->nlp_fc4_type);
     if (!(ndlp->nlp_type & NLP_FABRIC) &&
         (phba->nvmet_support == 0)) {
         /* The driver supports FCP and NVME concurrently.  If the
          * ndlp's nlp_fc4_type is still zero, the driver doesn't
          * know what PRLI to send yet.  Figure that out now and
          * call PRLI depending on the outcome.
          */
         if (vport->fc_flag & FC_PT2PT) {
             /* If we are pt2pt, there is no Fabric to determine
              * the FC4 type of the remote nport. So if NVME
              * is configured try it.
              */
             ndlp->nlp_fc4_type |= NLP_FC4_FCP;
             if ((!(vport->fc_flag & FC_PT2PT_NO_NVME)) &&
                 (vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH ||
                 vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME)) {
                 ndlp->nlp_fc4_type |= NLP_FC4_NVME;
                 /* We need to update the localport also */
                 lpfc_nvme_update_localport(vport);
             }
 
         } else if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
             ndlp->nlp_fc4_type |= NLP_FC4_FCP;
 
         } else if (ndlp->nlp_fc4_type == 0) {
             /* If we are only configured for FCP, the driver
              * should just issue PRLI for FCP. Otherwise issue
              * GFT_ID to determine if remote port supports NVME.
              */
             if (vport->cfg_enable_fc4_type != LPFC_ENABLE_FCP) {
                 lpfc_ns_cmd(vport, SLI_CTNS_GFT_ID, 0,
                         ndlp->nlp_DID);
                 return ndlp->nlp_state;
             }
             ndlp->nlp_fc4_type = NLP_FC4_FCP;
         }
 
         ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
         lpfc_nlp_set_state(vport, ndlp, NLP_STE_PRLI_ISSUE);
         if (lpfc_issue_els_prli(vport, ndlp, 0)) {
             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);
         }
     } else {
         if ((vport->fc_flag & FC_PT2PT) && phba->nvmet_support)
             phba->targetport->port_id = vport->fc_myDID;
 
         /* Only Fabric ports should transition. NVME target
          * must complete PRLI.
          */
         if (ndlp->nlp_type & NLP_FABRIC) {
             ndlp->nlp_fc4_type &= ~NLP_FC4_FCP;
             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)
 {
     if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
         spin_lock_irq(&ndlp->lock);
         ndlp->nlp_flag |= NLP_NODEV_REMOVE;
         spin_unlock_irq(&ndlp->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)
 {
     /* 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(&ndlp->lock);
 
     /* If we are a target we won't immediately transition into PRLI,
      * so if REG_LOGIN already completed we don't need to ignore it.
      */
     if (!(ndlp->nlp_flag & NLP_RPI_REGISTERED) ||
         !vport->phba->nvmet_support)
         ndlp->nlp_flag |= NLP_IGNR_REG_CMPL;
 
     ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
     spin_unlock_irq(&ndlp->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;
 
     if (!lpfc_rcv_prli_support_check(vport, ndlp, cmdiocb))
         return ndlp->nlp_state;
     lpfc_rcv_prli(vport, ndlp, cmdiocb);
     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 lpfc_iocbq *cmdiocb, *rspiocb;
     struct lpfc_hba   *phba = vport->phba;
     PRLI *npr;
     struct lpfc_nvme_prli *nvpr;
     void *temp_ptr;
     u32 ulp_status;
 
     cmdiocb = (struct lpfc_iocbq *) arg;
     rspiocb = cmdiocb->rsp_iocb;
 
     ulp_status = get_job_ulpstatus(phba, rspiocb);
 
     /* A solicited PRLI is either FCP or NVME.  The PRLI cmd/rsp
      * format is different so NULL the two PRLI types so that the
      * driver correctly gets the correct context.
      */
     npr = NULL;
     nvpr = NULL;
     temp_ptr = lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb);
     if (cmdiocb->cmd_flag & LPFC_PRLI_FCP_REQ)
         npr = (PRLI *) temp_ptr;
     else if (cmdiocb->cmd_flag & LPFC_PRLI_NVME_REQ)
         nvpr = (struct lpfc_nvme_prli *) temp_ptr;
 
     if (ulp_status) {
         if ((vport->port_type == LPFC_NPIV_PORT) &&
             vport->cfg_restrict_login) {
             goto out;
         }
 
         /* Adjust the nlp_type accordingly if the PRLI failed */
         if (npr)
             ndlp->nlp_fc4_type &= ~NLP_FC4_FCP;
         if (nvpr)
             ndlp->nlp_fc4_type &= ~NLP_FC4_NVME;
 
         /* We can't set the DSM state till BOTH PRLIs complete */
         goto out_err;
     }
 
     if (npr && (npr->acceptRspCode == PRLI_REQ_EXECUTED) &&
         (npr->prliType == PRLI_FCP_TYPE)) {
         lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC,
                  "6028 FCP NPR PRLI Cmpl Init %d Target %d\n",
                  npr->initiatorFunc,
                  npr->targetFunc);
         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;
 
     } else if (nvpr &&
            (bf_get_be32(prli_acc_rsp_code, nvpr) ==
             PRLI_REQ_EXECUTED) &&
            (bf_get_be32(prli_type_code, nvpr) ==
             PRLI_NVME_TYPE)) {
 
         /* Complete setting up the remote ndlp personality. */
         if (bf_get_be32(prli_init, nvpr))
             ndlp->nlp_type |= NLP_NVME_INITIATOR;
 
         if (phba->nsler && bf_get_be32(prli_nsler, nvpr) &&
             bf_get_be32(prli_conf, nvpr))
 
             ndlp->nlp_nvme_info |= NLP_NVME_NSLER;
         else
             ndlp->nlp_nvme_info &= ~NLP_NVME_NSLER;
 
         /* Target driver cannot solicit NVME FB. */
         if (bf_get_be32(prli_tgt, nvpr)) {
             /* Complete the nvme target roles.  The transport
              * needs to know if the rport is capable of
              * discovery in addition to its role.
              */
             ndlp->nlp_type |= NLP_NVME_TARGET;
             if (bf_get_be32(prli_disc, nvpr))
                 ndlp->nlp_type |= NLP_NVME_DISCOVERY;
 
             /*
              * If prli_fba is set, the Target supports FirstBurst.
              * If prli_fb_sz is 0, the FirstBurst size is unlimited,
              * otherwise it defines the actual size supported by
              * the NVME Target.
              */
             if ((bf_get_be32(prli_fba, nvpr) == 1) &&
                 (phba->cfg_nvme_enable_fb) &&
                 (!phba->nvmet_support)) {
                 /* Both sides support FB. The target's first
                  * burst size is a 512 byte encoded value.
                  */
                 ndlp->nlp_flag |= NLP_FIRSTBURST;
                 ndlp->nvme_fb_size = bf_get_be32(prli_fb_sz,
                                  nvpr);
 
                 /* Expressed in units of 512 bytes */
                 if (ndlp->nvme_fb_size)
                     ndlp->nvme_fb_size <<=
                         LPFC_NVME_FB_SHIFT;
                 else
                     ndlp->nvme_fb_size = LPFC_NVME_MAX_FB;
             }
         }
 
         lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC,
                  "6029 NVME PRLI Cmpl w1 x%08x "
                  "w4 x%08x w5 x%08x flag x%x, "
                  "fcp_info x%x nlp_type x%x\n",
                  be32_to_cpu(nvpr->word1),
                  be32_to_cpu(nvpr->word4),
                  be32_to_cpu(nvpr->word5),
                  ndlp->nlp_flag, ndlp->nlp_fcp_info,
                  ndlp->nlp_type);
     }
     if (!(ndlp->nlp_type & NLP_FCP_TARGET) &&
         (vport->port_type == LPFC_NPIV_PORT) &&
          vport->cfg_restrict_login) {
 out:
         spin_lock_irq(&ndlp->lock);
         ndlp->nlp_flag |= NLP_TARGET_REMOVE;
         spin_unlock_irq(&ndlp->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;
     }
 
 out_err:
     /* The ndlp state cannot move to MAPPED or UNMAPPED before all PRLIs
      * are complete.
      */
     if (ndlp->fc4_prli_sent == 0) {
         ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
         if (ndlp->nlp_type & (NLP_FCP_TARGET | NLP_NVME_TARGET))
             lpfc_nlp_set_state(vport, ndlp, NLP_STE_MAPPED_NODE);
         else if (ndlp->nlp_type &
              (NLP_FCP_INITIATOR | NLP_NVME_INITIATOR))
             lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
     } else
         lpfc_printf_vlog(vport,
                  KERN_INFO, LOG_ELS,
                  "3067 PRLI's still outstanding "
                  "on x%06x - count %d, Pend Node Mode "
                  "transition...\n",
                  ndlp->nlp_DID, ndlp->fc4_prli_sent);
 
     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)
 {
     if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
         spin_lock_irq(&ndlp->lock);
         ndlp->nlp_flag |= NLP_NODEV_REMOVE;
         spin_unlock_irq(&ndlp->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 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(&ndlp->lock);
     ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
     spin_unlock_irq(&ndlp->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 lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
 
     spin_lock_irq(&ndlp->lock);
     ndlp->nlp_flag |= NLP_LOGO_ACC;
     spin_unlock_irq(&ndlp->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)
 {
     ndlp->nlp_prev_state = NLP_STE_LOGO_ISSUE;
     lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
     spin_lock_irq(&ndlp->lock);
     ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
     spin_unlock_irq(&ndlp->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)
 {
     /*
      * DevLoss has timed out and is calling for Device Remove.
      * In this case, abort the LOGO and cleanup the ndlp
      */
 
     lpfc_unreg_rpi(vport, ndlp);
     /* 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_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;
 
     if (!lpfc_rcv_prli_support_check(vport, ndlp, cmdiocb))
         return ndlp->nlp_state;
 
     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_rm_unmap_node(struct lpfc_vport *vport,
               struct lpfc_nodelist *ndlp,
               void *arg,
               uint32_t evt)
 {
     lpfc_drop_node(vport, ndlp);
     return NLP_STE_FREED_NODE;
 }
 
 static uint32_t
 lpfc_device_recov_unmap_node(struct lpfc_vport *vport,
                  struct lpfc_nodelist *ndlp,
                  void *arg,
                  uint32_t evt)
 {
     ndlp->nlp_prev_state = NLP_STE_UNMAPPED_NODE;
     lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
     spin_lock_irq(&ndlp->lock);
     ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
     ndlp->nlp_fc4_type &= ~(NLP_FC4_FCP | NLP_FC4_NVME);
     spin_unlock_irq(&ndlp->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;
 
     if (!lpfc_rcv_prli_support_check(vport, ndlp, cmdiocb))
         return ndlp->nlp_state;
     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_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
 
     /* flush the target */
     lpfc_sli_abort_iocb(vport, 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)
 {
     lpfc_disc_set_adisc(vport, ndlp);
 
     ndlp->nlp_prev_state = NLP_STE_MAPPED_NODE;
     lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
     spin_lock_irq(&ndlp->lock);
     ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
     ndlp->nlp_fc4_type &= ~(NLP_FC4_FCP | NLP_FC4_NVME);
     spin_unlock_irq(&ndlp->lock);
     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 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(&ndlp->lock);
         ndlp->nlp_flag &= ~(NLP_NPR_ADISC | NLP_NPR_2B_DISC);
         spin_unlock_irq(&ndlp->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 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)) {
         /*
          * ADISC nodes will be handled in regular discovery path after
          * receiving response from NS.
          *
          * For other nodes, Send PLOGI to trigger an implicit LOGO.
          */
         if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) {
             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)) {
         /*
          * ADISC nodes will be handled in regular discovery path after
          * receiving response from NS.
          *
          * For other nodes, Send PLOGI to trigger an implicit LOGO.
          */
         if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) {
             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 lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
 
     spin_lock_irq(&ndlp->lock);
     ndlp->nlp_flag |= NLP_LOGO_ACC;
     spin_unlock_irq(&ndlp->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(&ndlp->lock);
         ndlp->nlp_flag |= NLP_DELAY_TMO;
         ndlp->nlp_flag &= ~NLP_NPR_ADISC;
         spin_unlock_irq(&ndlp->lock);
         ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
     } else {
         spin_lock_irq(&ndlp->lock);
         ndlp->nlp_flag &= ~NLP_NPR_ADISC;
         spin_unlock_irq(&ndlp->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_hba *phba = vport->phba;
     struct lpfc_iocbq *cmdiocb, *rspiocb;
     u32 ulp_status;
 
     cmdiocb = (struct lpfc_iocbq *) arg;
     rspiocb = cmdiocb->rsp_iocb;
 
     ulp_status = get_job_ulpstatus(phba, rspiocb);
 
     if (ulp_status)
         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_hba *phba = vport->phba;
     struct lpfc_iocbq *cmdiocb, *rspiocb;
     u32 ulp_status;
 
     cmdiocb = (struct lpfc_iocbq *) arg;
     rspiocb = cmdiocb->rsp_iocb;
 
     ulp_status = get_job_ulpstatus(phba, rspiocb);
 
     if (ulp_status && (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_hba *phba = vport->phba;
     struct lpfc_iocbq *cmdiocb, *rspiocb;
     u32 ulp_status;
 
     cmdiocb = (struct lpfc_iocbq *) arg;
     rspiocb = cmdiocb->rsp_iocb;
 
     ulp_status = get_job_ulpstatus(phba, rspiocb);
 
     if (ulp_status && (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;
         if (ndlp->nlp_flag & NLP_LOGO_ACC) {
             lpfc_unreg_rpi(vport, ndlp);
         }
     } 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)
 {
     if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
         spin_lock_irq(&ndlp->lock);
         ndlp->nlp_flag |= NLP_NODEV_REMOVE;
         spin_unlock_irq(&ndlp->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)
 {
     /* 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(&ndlp->lock);
     ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
     ndlp->nlp_fc4_type &= ~(NLP_FC4_FCP | NLP_FC4_NVME);
     spin_unlock_irq(&ndlp->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_device_rm_unmap_node,  /* 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;
     uint32_t data1;
 
     if (lpfc_nlp_get(ndlp))
         got_ndlp = 1;
 
     cur_state = ndlp->nlp_state;
 
     data1 = (((uint32_t)ndlp->nlp_fc4_type << 16) |
         ((uint32_t)ndlp->nlp_type));
     /* 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 rpi x%x Data: x%x x%x\n",
              evt, ndlp->nlp_DID, cur_state, ndlp->nlp_rpi,
              ndlp->nlp_flag, data1);
 
     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) {
         data1 = (((uint32_t)ndlp->nlp_fc4_type << 16) |
             ((uint32_t)ndlp->nlp_type));
         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
              "0212 DSM out state %d on NPort x%x "
              "rpi x%x Data: x%x x%x\n",
              rc, ndlp->nlp_DID, ndlp->nlp_rpi, ndlp->nlp_flag,
              data1);
 
         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;
 }