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lpfc_hbadisc.c

/*******************************************************************
 * This file is part of the Emulex Linux Device Driver for         *
 * Fibre Channel Host Bus Adapters.                                *
 * Copyright (C) 2004-2009 Emulex.  All rights reserved.           *
 * EMULEX and SLI are trademarks of Emulex.                        *
 * www.emulex.com                                                  *
 * Portions Copyright (C) 2004-2005 Christoph Hellwig              *
 *                                                                 *
 * This program is free software; you can redistribute it and/or   *
 * modify it under the terms of version 2 of the GNU General       *
 * Public License as published by the Free Software Foundation.    *
 * This program is distributed in the hope that it will be useful. *
 * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND          *
 * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY,  *
 * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE      *
 * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *
 * TO BE LEGALLY INVALID.  See the GNU General Public License for  *
 * more details, a copy of which can be found in the file COPYING  *
 * included with this package.                                     *
 *******************************************************************/

#include <linux/blkdev.h>
#include <linux/pci.h>
#include <linux/kthread.h>
#include <linux/interrupt.h>

#include <scsi/scsi.h>
#include <scsi/scsi_device.h>
#include <scsi/scsi_host.h>
#include <scsi/scsi_transport_fc.h>

#include "lpfc_hw4.h"
#include "lpfc_hw.h"
#include "lpfc_nl.h"
#include "lpfc_disc.h"
#include "lpfc_sli.h"
#include "lpfc_sli4.h"
#include "lpfc_scsi.h"
#include "lpfc.h"
#include "lpfc_logmsg.h"
#include "lpfc_crtn.h"
#include "lpfc_vport.h"
#include "lpfc_debugfs.h"

/* AlpaArray for assignment of scsid for scan-down and bind_method */
static uint8_t lpfcAlpaArray[] = {
      0xEF, 0xE8, 0xE4, 0xE2, 0xE1, 0xE0, 0xDC, 0xDA, 0xD9, 0xD6,
      0xD5, 0xD4, 0xD3, 0xD2, 0xD1, 0xCE, 0xCD, 0xCC, 0xCB, 0xCA,
      0xC9, 0xC7, 0xC6, 0xC5, 0xC3, 0xBC, 0xBA, 0xB9, 0xB6, 0xB5,
      0xB4, 0xB3, 0xB2, 0xB1, 0xAE, 0xAD, 0xAC, 0xAB, 0xAA, 0xA9,
      0xA7, 0xA6, 0xA5, 0xA3, 0x9F, 0x9E, 0x9D, 0x9B, 0x98, 0x97,
      0x90, 0x8F, 0x88, 0x84, 0x82, 0x81, 0x80, 0x7C, 0x7A, 0x79,
      0x76, 0x75, 0x74, 0x73, 0x72, 0x71, 0x6E, 0x6D, 0x6C, 0x6B,
      0x6A, 0x69, 0x67, 0x66, 0x65, 0x63, 0x5C, 0x5A, 0x59, 0x56,
      0x55, 0x54, 0x53, 0x52, 0x51, 0x4E, 0x4D, 0x4C, 0x4B, 0x4A,
      0x49, 0x47, 0x46, 0x45, 0x43, 0x3C, 0x3A, 0x39, 0x36, 0x35,
      0x34, 0x33, 0x32, 0x31, 0x2E, 0x2D, 0x2C, 0x2B, 0x2A, 0x29,
      0x27, 0x26, 0x25, 0x23, 0x1F, 0x1E, 0x1D, 0x1B, 0x18, 0x17,
      0x10, 0x0F, 0x08, 0x04, 0x02, 0x01
};

static void lpfc_disc_timeout_handler(struct lpfc_vport *);
static void lpfc_disc_flush_list(struct lpfc_vport *vport);

void
lpfc_terminate_rport_io(struct fc_rport *rport)
{
      struct lpfc_rport_data *rdata;
      struct lpfc_nodelist * ndlp;
      struct lpfc_hba *phba;

      rdata = rport->dd_data;
      ndlp = rdata->pnode;

      if (!ndlp || !NLP_CHK_NODE_ACT(ndlp)) {
            if (rport->roles & FC_RPORT_ROLE_FCP_TARGET)
                  printk(KERN_ERR "Cannot find remote node"
                  " to terminate I/O Data x%x\n",
                  rport->port_id);
            return;
      }

      phba  = ndlp->phba;

      lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_RPORT,
            "rport terminate: sid:x%x did:x%x flg:x%x",
            ndlp->nlp_sid, ndlp->nlp_DID, ndlp->nlp_flag);

      if (ndlp->nlp_sid != NLP_NO_SID) {
            lpfc_sli_abort_iocb(ndlp->vport,
                  &phba->sli.ring[phba->sli.fcp_ring],
                  ndlp->nlp_sid, 0, LPFC_CTX_TGT);
      }
}

/*
 * This function will be called when dev_loss_tmo fire.
 */
void
lpfc_dev_loss_tmo_callbk(struct fc_rport *rport)
{
      struct lpfc_rport_data *rdata;
      struct lpfc_nodelist * ndlp;
      struct lpfc_vport *vport;
      struct lpfc_hba   *phba;
      struct lpfc_work_evt *evtp;
      int  put_node;
      int  put_rport;

      rdata = rport->dd_data;
      ndlp = rdata->pnode;
      if (!ndlp || !NLP_CHK_NODE_ACT(ndlp))
            return;

      vport = ndlp->vport;
      phba  = vport->phba;

      lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
            "rport devlosscb: sid:x%x did:x%x flg:x%x",
            ndlp->nlp_sid, ndlp->nlp_DID, ndlp->nlp_flag);

      /* Don't defer this if we are in the process of deleting the vport
       * or unloading the driver. The unload will cleanup the node
       * appropriately we just need to cleanup the ndlp rport info here.
       */
      if (vport->load_flag & FC_UNLOADING) {
            put_node = rdata->pnode != NULL;
            put_rport = ndlp->rport != NULL;
            rdata->pnode = NULL;
            ndlp->rport = NULL;
            if (put_node)
                  lpfc_nlp_put(ndlp);
            if (put_rport)
                  put_device(&rport->dev);
            return;
      }

      if (ndlp->nlp_state == NLP_STE_MAPPED_NODE)
            return;

      evtp = &ndlp->dev_loss_evt;

      if (!list_empty(&evtp->evt_listp))
            return;

      spin_lock_irq(&phba->hbalock);
      /* We need to hold the node by incrementing the reference
       * count until this queued work is done
       */
      evtp->evt_arg1  = lpfc_nlp_get(ndlp);
      if (evtp->evt_arg1) {
            evtp->evt = LPFC_EVT_DEV_LOSS;
            list_add_tail(&evtp->evt_listp, &phba->work_list);
            lpfc_worker_wake_up(phba);
      }
      spin_unlock_irq(&phba->hbalock);

      return;
}

/*
 * This function is called from the worker thread when dev_loss_tmo
 * expire.
 */
static void
lpfc_dev_loss_tmo_handler(struct lpfc_nodelist *ndlp)
{
      struct lpfc_rport_data *rdata;
      struct fc_rport   *rport;
      struct lpfc_vport *vport;
      struct lpfc_hba   *phba;
      uint8_t *name;
      int  put_node;
      int  put_rport;
      int warn_on = 0;

      rport = ndlp->rport;

      if (!rport)
            return;

      rdata = rport->dd_data;
      name = (uint8_t *) &ndlp->nlp_portname;
      vport = ndlp->vport;
      phba  = vport->phba;

      lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
            "rport devlosstmo:did:x%x type:x%x id:x%x",
            ndlp->nlp_DID, ndlp->nlp_type, rport->scsi_target_id);

      /* Don't defer this if we are in the process of deleting the vport
       * or unloading the driver. The unload will cleanup the node
       * appropriately we just need to cleanup the ndlp rport info here.
       */
      if (vport->load_flag & FC_UNLOADING) {
            if (ndlp->nlp_sid != NLP_NO_SID) {
                  /* flush the target */
                  lpfc_sli_abort_iocb(vport,
                              &phba->sli.ring[phba->sli.fcp_ring],
                              ndlp->nlp_sid, 0, LPFC_CTX_TGT);
            }
            put_node = rdata->pnode != NULL;
            put_rport = ndlp->rport != NULL;
            rdata->pnode = NULL;
            ndlp->rport = NULL;
            if (put_node)
                  lpfc_nlp_put(ndlp);
            if (put_rport)
                  put_device(&rport->dev);
            return;
      }

      if (ndlp->nlp_state == NLP_STE_MAPPED_NODE) {
            lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
                         "0284 Devloss timeout Ignored on "
                         "WWPN %x:%x:%x:%x:%x:%x:%x:%x "
                         "NPort x%x\n",
                         *name, *(name+1), *(name+2), *(name+3),
                         *(name+4), *(name+5), *(name+6), *(name+7),
                         ndlp->nlp_DID);
            return;
      }

      if (ndlp->nlp_type & NLP_FABRIC) {
            /* We will clean up these Nodes in linkup */
            put_node = rdata->pnode != NULL;
            put_rport = ndlp->rport != NULL;
            rdata->pnode = NULL;
            ndlp->rport = NULL;
            if (put_node)
                  lpfc_nlp_put(ndlp);
            if (put_rport)
                  put_device(&rport->dev);
            return;
      }

      if (ndlp->nlp_sid != NLP_NO_SID) {
            warn_on = 1;
            /* flush the target */
            lpfc_sli_abort_iocb(vport, &phba->sli.ring[phba->sli.fcp_ring],
                            ndlp->nlp_sid, 0, LPFC_CTX_TGT);
      }

      if (warn_on) {
            lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
                         "0203 Devloss timeout on "
                         "WWPN %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x "
                         "NPort x%06x Data: x%x x%x x%x\n",
                         *name, *(name+1), *(name+2), *(name+3),
                         *(name+4), *(name+5), *(name+6), *(name+7),
                         ndlp->nlp_DID, ndlp->nlp_flag,
                         ndlp->nlp_state, ndlp->nlp_rpi);
      } else {
            lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
                         "0204 Devloss timeout on "
                         "WWPN %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x "
                         "NPort x%06x Data: x%x x%x x%x\n",
                         *name, *(name+1), *(name+2), *(name+3),
                         *(name+4), *(name+5), *(name+6), *(name+7),
                         ndlp->nlp_DID, ndlp->nlp_flag,
                         ndlp->nlp_state, ndlp->nlp_rpi);
      }

      put_node = rdata->pnode != NULL;
      put_rport = ndlp->rport != NULL;
      rdata->pnode = NULL;
      ndlp->rport = NULL;
      if (put_node)
            lpfc_nlp_put(ndlp);
      if (put_rport)
            put_device(&rport->dev);

      if (!(vport->load_flag & FC_UNLOADING) &&
          !(ndlp->nlp_flag & NLP_DELAY_TMO) &&
          !(ndlp->nlp_flag & NLP_NPR_2B_DISC) &&
          (ndlp->nlp_state != NLP_STE_UNMAPPED_NODE))
            lpfc_disc_state_machine(vport, ndlp, NULL, NLP_EVT_DEVICE_RM);

      lpfc_unregister_unused_fcf(phba);
}

/**
 * lpfc_alloc_fast_evt - Allocates data structure for posting event
 * @phba: Pointer to hba context object.
 *
 * This function is called from the functions which need to post
 * events from interrupt context. This function allocates data
 * structure required for posting event. It also keeps track of
 * number of events pending and prevent event storm when there are
 * too many events.
 **/
struct lpfc_fast_path_event *
lpfc_alloc_fast_evt(struct lpfc_hba *phba) {
      struct lpfc_fast_path_event *ret;

      /* If there are lot of fast event do not exhaust memory due to this */
      if (atomic_read(&phba->fast_event_count) > LPFC_MAX_EVT_COUNT)
            return NULL;

      ret = kzalloc(sizeof(struct lpfc_fast_path_event),
                  GFP_ATOMIC);
      if (ret) {
            atomic_inc(&phba->fast_event_count);
            INIT_LIST_HEAD(&ret->work_evt.evt_listp);
            ret->work_evt.evt = LPFC_EVT_FASTPATH_MGMT_EVT;
      }
      return ret;
}

/**
 * lpfc_free_fast_evt - Frees event data structure
 * @phba: Pointer to hba context object.
 * @evt:  Event object which need to be freed.
 *
 * This function frees the data structure required for posting
 * events.
 **/
void
lpfc_free_fast_evt(struct lpfc_hba *phba,
            struct lpfc_fast_path_event *evt) {

      atomic_dec(&phba->fast_event_count);
      kfree(evt);
}

/**
 * lpfc_send_fastpath_evt - Posts events generated from fast path
 * @phba: Pointer to hba context object.
 * @evtp: Event data structure.
 *
 * This function is called from worker thread, when the interrupt
 * context need to post an event. This function posts the event
 * to fc transport netlink interface.
 **/
static void
lpfc_send_fastpath_evt(struct lpfc_hba *phba,
            struct lpfc_work_evt *evtp)
{
      unsigned long evt_category, evt_sub_category;
      struct lpfc_fast_path_event *fast_evt_data;
      char *evt_data;
      uint32_t evt_data_size;
      struct Scsi_Host *shost;

      fast_evt_data = container_of(evtp, struct lpfc_fast_path_event,
            work_evt);

      evt_category = (unsigned long) fast_evt_data->un.fabric_evt.event_type;
      evt_sub_category = (unsigned long) fast_evt_data->un.
                  fabric_evt.subcategory;
      shost = lpfc_shost_from_vport(fast_evt_data->vport);
      if (evt_category == FC_REG_FABRIC_EVENT) {
            if (evt_sub_category == LPFC_EVENT_FCPRDCHKERR) {
                  evt_data = (char *) &fast_evt_data->un.read_check_error;
                  evt_data_size = sizeof(fast_evt_data->un.
                        read_check_error);
            } else if ((evt_sub_category == LPFC_EVENT_FABRIC_BUSY) ||
                  (evt_sub_category == LPFC_EVENT_PORT_BUSY)) {
                  evt_data = (char *) &fast_evt_data->un.fabric_evt;
                  evt_data_size = sizeof(fast_evt_data->un.fabric_evt);
            } else {
                  lpfc_free_fast_evt(phba, fast_evt_data);
                  return;
            }
      } else if (evt_category == FC_REG_SCSI_EVENT) {
            switch (evt_sub_category) {
            case LPFC_EVENT_QFULL:
            case LPFC_EVENT_DEVBSY:
                  evt_data = (char *) &fast_evt_data->un.scsi_evt;
                  evt_data_size = sizeof(fast_evt_data->un.scsi_evt);
                  break;
            case LPFC_EVENT_CHECK_COND:
                  evt_data = (char *) &fast_evt_data->un.check_cond_evt;
                  evt_data_size =  sizeof(fast_evt_data->un.
                        check_cond_evt);
                  break;
            case LPFC_EVENT_VARQUEDEPTH:
                  evt_data = (char *) &fast_evt_data->un.queue_depth_evt;
                  evt_data_size = sizeof(fast_evt_data->un.
                        queue_depth_evt);
                  break;
            default:
                  lpfc_free_fast_evt(phba, fast_evt_data);
                  return;
            }
      } else {
            lpfc_free_fast_evt(phba, fast_evt_data);
            return;
      }

      fc_host_post_vendor_event(shost,
            fc_get_event_number(),
            evt_data_size,
            evt_data,
            LPFC_NL_VENDOR_ID);

      lpfc_free_fast_evt(phba, fast_evt_data);
      return;
}

static void
lpfc_work_list_done(struct lpfc_hba *phba)
{
      struct lpfc_work_evt  *evtp = NULL;
      struct lpfc_nodelist  *ndlp;
      int free_evt;

      spin_lock_irq(&phba->hbalock);
      while (!list_empty(&phba->work_list)) {
            list_remove_head((&phba->work_list), evtp, typeof(*evtp),
                         evt_listp);
            spin_unlock_irq(&phba->hbalock);
            free_evt = 1;
            switch (evtp->evt) {
            case LPFC_EVT_ELS_RETRY:
                  ndlp = (struct lpfc_nodelist *) (evtp->evt_arg1);
                  lpfc_els_retry_delay_handler(ndlp);
                  free_evt = 0; /* evt is part of ndlp */
                  /* decrement the node reference count held
                   * for this queued work
                   */
                  lpfc_nlp_put(ndlp);
                  break;
            case LPFC_EVT_DEV_LOSS:
                  ndlp = (struct lpfc_nodelist *)(evtp->evt_arg1);
                  lpfc_dev_loss_tmo_handler(ndlp);
                  free_evt = 0;
                  /* decrement the node reference count held for
                   * this queued work
                   */
                  lpfc_nlp_put(ndlp);
                  break;
            case LPFC_EVT_ONLINE:
                  if (phba->link_state < LPFC_LINK_DOWN)
                        *(int *) (evtp->evt_arg1) = lpfc_online(phba);
                  else
                        *(int *) (evtp->evt_arg1) = 0;
                  complete((struct completion *)(evtp->evt_arg2));
                  break;
            case LPFC_EVT_OFFLINE_PREP:
                  if (phba->link_state >= LPFC_LINK_DOWN)
                        lpfc_offline_prep(phba);
                  *(int *)(evtp->evt_arg1) = 0;
                  complete((struct completion *)(evtp->evt_arg2));
                  break;
            case LPFC_EVT_OFFLINE:
                  lpfc_offline(phba);
                  lpfc_sli_brdrestart(phba);
                  *(int *)(evtp->evt_arg1) =
                        lpfc_sli_brdready(phba, HS_FFRDY | HS_MBRDY);
                  lpfc_unblock_mgmt_io(phba);
                  complete((struct completion *)(evtp->evt_arg2));
                  break;
            case LPFC_EVT_WARM_START:
                  lpfc_offline(phba);
                  lpfc_reset_barrier(phba);
                  lpfc_sli_brdreset(phba);
                  lpfc_hba_down_post(phba);
                  *(int *)(evtp->evt_arg1) =
                        lpfc_sli_brdready(phba, HS_MBRDY);
                  lpfc_unblock_mgmt_io(phba);
                  complete((struct completion *)(evtp->evt_arg2));
                  break;
            case LPFC_EVT_KILL:
                  lpfc_offline(phba);
                  *(int *)(evtp->evt_arg1)
                        = (phba->pport->stopped)
                                ? 0 : lpfc_sli_brdkill(phba);
                  lpfc_unblock_mgmt_io(phba);
                  complete((struct completion *)(evtp->evt_arg2));
                  break;
            case LPFC_EVT_FASTPATH_MGMT_EVT:
                  lpfc_send_fastpath_evt(phba, evtp);
                  free_evt = 0;
                  break;
            }
            if (free_evt)
                  kfree(evtp);
            spin_lock_irq(&phba->hbalock);
      }
      spin_unlock_irq(&phba->hbalock);

}

static void
lpfc_work_done(struct lpfc_hba *phba)
{
      struct lpfc_sli_ring *pring;
      uint32_t ha_copy, status, control, work_port_events;
      struct lpfc_vport **vports;
      struct lpfc_vport *vport;
      int i;

      spin_lock_irq(&phba->hbalock);
      ha_copy = phba->work_ha;
      phba->work_ha = 0;
      spin_unlock_irq(&phba->hbalock);

      /* First, try to post the next mailbox command to SLI4 device */
      if (phba->pci_dev_grp == LPFC_PCI_DEV_OC)
            lpfc_sli4_post_async_mbox(phba);

      if (ha_copy & HA_ERATT)
            /* Handle the error attention event */
            lpfc_handle_eratt(phba);

      if (ha_copy & HA_MBATT)
            lpfc_sli_handle_mb_event(phba);

      if (ha_copy & HA_LATT)
            lpfc_handle_latt(phba);

      /* Process SLI4 events */
      if (phba->pci_dev_grp == LPFC_PCI_DEV_OC) {
            if (phba->hba_flag & FCP_XRI_ABORT_EVENT)
                  lpfc_sli4_fcp_xri_abort_event_proc(phba);
            if (phba->hba_flag & ELS_XRI_ABORT_EVENT)
                  lpfc_sli4_els_xri_abort_event_proc(phba);
            if (phba->hba_flag & ASYNC_EVENT)
                  lpfc_sli4_async_event_proc(phba);
            if (phba->hba_flag & HBA_POST_RECEIVE_BUFFER) {
                  spin_lock_irq(&phba->hbalock);
                  phba->hba_flag &= ~HBA_POST_RECEIVE_BUFFER;
                  spin_unlock_irq(&phba->hbalock);
                  lpfc_sli_hbqbuf_add_hbqs(phba, LPFC_ELS_HBQ);
            }
            if (phba->hba_flag & HBA_RECEIVE_BUFFER)
                  lpfc_sli4_handle_received_buffer(phba);
      }

      vports = lpfc_create_vport_work_array(phba);
      if (vports != NULL)
            for (i = 0; i <= phba->max_vports; i++) {
                  /*
                   * We could have no vports in array if unloading, so if
                   * this happens then just use the pport
                   */
                  if (vports[i] == NULL && i == 0)
                        vport = phba->pport;
                  else
                        vport = vports[i];
                  if (vport == NULL)
                        break;
                  spin_lock_irq(&vport->work_port_lock);
                  work_port_events = vport->work_port_events;
                  vport->work_port_events &= ~work_port_events;
                  spin_unlock_irq(&vport->work_port_lock);
                  if (work_port_events & WORKER_DISC_TMO)
                        lpfc_disc_timeout_handler(vport);
                  if (work_port_events & WORKER_ELS_TMO)
                        lpfc_els_timeout_handler(vport);
                  if (work_port_events & WORKER_HB_TMO)
                        lpfc_hb_timeout_handler(phba);
                  if (work_port_events & WORKER_MBOX_TMO)
                        lpfc_mbox_timeout_handler(phba);
                  if (work_port_events & WORKER_FABRIC_BLOCK_TMO)
                        lpfc_unblock_fabric_iocbs(phba);
                  if (work_port_events & WORKER_FDMI_TMO)
                        lpfc_fdmi_timeout_handler(vport);
                  if (work_port_events & WORKER_RAMP_DOWN_QUEUE)
                        lpfc_ramp_down_queue_handler(phba);
                  if (work_port_events & WORKER_RAMP_UP_QUEUE)
                        lpfc_ramp_up_queue_handler(phba);
            }
      lpfc_destroy_vport_work_array(phba, vports);

      pring = &phba->sli.ring[LPFC_ELS_RING];
      status = (ha_copy & (HA_RXMASK  << (4*LPFC_ELS_RING)));
      status >>= (4*LPFC_ELS_RING);
      if ((status & HA_RXMASK)
            || (pring->flag & LPFC_DEFERRED_RING_EVENT)) {
            if (pring->flag & LPFC_STOP_IOCB_EVENT) {
                  pring->flag |= LPFC_DEFERRED_RING_EVENT;
                  /* Set the lpfc data pending flag */
                  set_bit(LPFC_DATA_READY, &phba->data_flags);
            } else {
                  pring->flag &= ~LPFC_DEFERRED_RING_EVENT;
                  lpfc_sli_handle_slow_ring_event(phba, pring,
                                          (status &
                                           HA_RXMASK));
            }
            /*
             * Turn on Ring interrupts
             */
            if (phba->sli_rev <= LPFC_SLI_REV3) {
                  spin_lock_irq(&phba->hbalock);
                  control = readl(phba->HCregaddr);
                  if (!(control & (HC_R0INT_ENA << LPFC_ELS_RING))) {
                        lpfc_debugfs_slow_ring_trc(phba,
                              "WRK Enable ring: cntl:x%x hacopy:x%x",
                              control, ha_copy, 0);

                        control |= (HC_R0INT_ENA << LPFC_ELS_RING);
                        writel(control, phba->HCregaddr);
                        readl(phba->HCregaddr); /* flush */
                  } else {
                        lpfc_debugfs_slow_ring_trc(phba,
                              "WRK Ring ok:     cntl:x%x hacopy:x%x",
                              control, ha_copy, 0);
                  }
                  spin_unlock_irq(&phba->hbalock);
            }
      }
      lpfc_work_list_done(phba);
}

int
lpfc_do_work(void *p)
{
      struct lpfc_hba *phba = p;
      int rc;

      set_user_nice(current, -20);
      phba->data_flags = 0;

      while (!kthread_should_stop()) {
            /* wait and check worker queue activities */
            rc = wait_event_interruptible(phba->work_waitq,
                              (test_and_clear_bit(LPFC_DATA_READY,
                                              &phba->data_flags)
                               || kthread_should_stop()));
            /* Signal wakeup shall terminate the worker thread */
            if (rc) {
                  lpfc_printf_log(phba, KERN_ERR, LOG_ELS,
                              "0433 Wakeup on signal: rc=x%x\n", rc);
                  break;
            }

            /* Attend pending lpfc data processing */
            lpfc_work_done(phba);
      }
      phba->worker_thread = NULL;
      lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
                  "0432 Worker thread stopped.\n");
      return 0;
}

/*
 * This is only called to handle FC worker events. Since this a rare
 * occurance, we allocate a struct lpfc_work_evt structure here instead of
 * embedding it in the IOCB.
 */
int
lpfc_workq_post_event(struct lpfc_hba *phba, void *arg1, void *arg2,
                  uint32_t evt)
{
      struct lpfc_work_evt  *evtp;
      unsigned long flags;

      /*
       * All Mailbox completions and LPFC_ELS_RING rcv ring IOCB events will
       * be queued to worker thread for processing
       */
      evtp = kmalloc(sizeof(struct lpfc_work_evt), GFP_ATOMIC);
      if (!evtp)
            return 0;

      evtp->evt_arg1  = arg1;
      evtp->evt_arg2  = arg2;
      evtp->evt       = evt;

      spin_lock_irqsave(&phba->hbalock, flags);
      list_add_tail(&evtp->evt_listp, &phba->work_list);
      spin_unlock_irqrestore(&phba->hbalock, flags);

      lpfc_worker_wake_up(phba);

      return 1;
}

void
lpfc_cleanup_rpis(struct lpfc_vport *vport, int remove)
{
      struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
      struct lpfc_hba  *phba = vport->phba;
      struct lpfc_nodelist *ndlp, *next_ndlp;
      int  rc;

      list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) {
            if (!NLP_CHK_NODE_ACT(ndlp))
                  continue;
            if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
                  continue;
            if ((phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN) ||
                  ((vport->port_type == LPFC_NPIV_PORT) &&
                  (ndlp->nlp_DID == NameServer_DID)))
                  lpfc_unreg_rpi(vport, ndlp);

            /* Leave Fabric nodes alone on link down */
            if (!remove && ndlp->nlp_type & NLP_FABRIC)
                  continue;
            rc = lpfc_disc_state_machine(vport, ndlp, NULL,
                                   remove
                                   ? NLP_EVT_DEVICE_RM
                                   : NLP_EVT_DEVICE_RECOVERY);
      }
      if (phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN) {
            lpfc_mbx_unreg_vpi(vport);
            spin_lock_irq(shost->host_lock);
            vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
            spin_unlock_irq(shost->host_lock);
      }
}

void
lpfc_port_link_failure(struct lpfc_vport *vport)
{
      /* Cleanup any outstanding RSCN activity */
      lpfc_els_flush_rscn(vport);

      /* Cleanup any outstanding ELS commands */
      lpfc_els_flush_cmd(vport);

      lpfc_cleanup_rpis(vport, 0);

      /* Turn off discovery timer if its running */
      lpfc_can_disctmo(vport);
}

void
lpfc_linkdown_port(struct lpfc_vport *vport)
{
      struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);

      fc_host_post_event(shost, fc_get_event_number(), FCH_EVT_LINKDOWN, 0);

      lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
            "Link Down:       state:x%x rtry:x%x flg:x%x",
            vport->port_state, vport->fc_ns_retry, vport->fc_flag);

      lpfc_port_link_failure(vport);

}

int
lpfc_linkdown(struct lpfc_hba *phba)
{
      struct lpfc_vport *vport = phba->pport;
      struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
      struct lpfc_vport **vports;
      LPFC_MBOXQ_t          *mb;
      int i;

      if (phba->link_state == LPFC_LINK_DOWN)
            return 0;
      spin_lock_irq(&phba->hbalock);
      phba->fcf.fcf_flag &= ~(FCF_AVAILABLE | FCF_DISCOVERED);
      if (phba->link_state > LPFC_LINK_DOWN) {
            phba->link_state = LPFC_LINK_DOWN;
            phba->pport->fc_flag &= ~FC_LBIT;
      }
      spin_unlock_irq(&phba->hbalock);
      vports = lpfc_create_vport_work_array(phba);
      if (vports != NULL)
            for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
                  /* Issue a LINK DOWN event to all nodes */
                  lpfc_linkdown_port(vports[i]);
            }
      lpfc_destroy_vport_work_array(phba, vports);
      /* Clean up any firmware default rpi's */
      mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
      if (mb) {
            lpfc_unreg_did(phba, 0xffff, 0xffffffff, mb);
            mb->vport = vport;
            mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
            if (lpfc_sli_issue_mbox(phba, mb, MBX_NOWAIT)
                == MBX_NOT_FINISHED) {
                  mempool_free(mb, phba->mbox_mem_pool);
            }
      }

      /* Setup myDID for link up if we are in pt2pt mode */
      if (phba->pport->fc_flag & FC_PT2PT) {
            phba->pport->fc_myDID = 0;
            mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
            if (mb) {
                  lpfc_config_link(phba, mb);
                  mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
                  mb->vport = vport;
                  if (lpfc_sli_issue_mbox(phba, mb, MBX_NOWAIT)
                      == MBX_NOT_FINISHED) {
                        mempool_free(mb, phba->mbox_mem_pool);
                  }
            }
            spin_lock_irq(shost->host_lock);
            phba->pport->fc_flag &= ~(FC_PT2PT | FC_PT2PT_PLOGI);
            spin_unlock_irq(shost->host_lock);
      }

      return 0;
}

static void
lpfc_linkup_cleanup_nodes(struct lpfc_vport *vport)
{
      struct lpfc_nodelist *ndlp;

      list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
            if (!NLP_CHK_NODE_ACT(ndlp))
                  continue;
            if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
                  continue;
            if (ndlp->nlp_type & NLP_FABRIC) {
                  /* On Linkup its safe to clean up the ndlp
                   * from Fabric connections.
                   */
                  if (ndlp->nlp_DID != Fabric_DID)
                        lpfc_unreg_rpi(vport, ndlp);
                  lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
            } else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) {
                  /* Fail outstanding IO now since device is
                   * marked for PLOGI.
                   */
                  lpfc_unreg_rpi(vport, ndlp);
            }
      }
}

static void
lpfc_linkup_port(struct lpfc_vport *vport)
{
      struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
      struct lpfc_hba  *phba = vport->phba;

      if ((vport->load_flag & FC_UNLOADING) != 0)
            return;

      lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
            "Link Up:         top:x%x speed:x%x flg:x%x",
            phba->fc_topology, phba->fc_linkspeed, phba->link_flag);

      /* If NPIV is not enabled, only bring the physical port up */
      if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
            (vport != phba->pport))
            return;

      fc_host_post_event(shost, fc_get_event_number(), FCH_EVT_LINKUP, 0);

      spin_lock_irq(shost->host_lock);
      vport->fc_flag &= ~(FC_PT2PT | FC_PT2PT_PLOGI | FC_ABORT_DISCOVERY |
                      FC_RSCN_MODE | FC_NLP_MORE | FC_RSCN_DISCOVERY);
      vport->fc_flag |= FC_NDISC_ACTIVE;
      vport->fc_ns_retry = 0;
      spin_unlock_irq(shost->host_lock);

      if (vport->fc_flag & FC_LBIT)
            lpfc_linkup_cleanup_nodes(vport);

}

static int
lpfc_linkup(struct lpfc_hba *phba)
{
      struct lpfc_vport **vports;
      int i;

      phba->link_state = LPFC_LINK_UP;

      /* Unblock fabric iocbs if they are blocked */
      clear_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags);
      del_timer_sync(&phba->fabric_block_timer);

      vports = lpfc_create_vport_work_array(phba);
      if (vports != NULL)
            for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++)
                  lpfc_linkup_port(vports[i]);
      lpfc_destroy_vport_work_array(phba, vports);
      if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
          (phba->sli_rev < LPFC_SLI_REV4))
            lpfc_issue_clear_la(phba, phba->pport);

      return 0;
}

/*
 * This routine handles processing a CLEAR_LA mailbox
 * command upon completion. It is setup in the LPFC_MBOXQ
 * as the completion routine when the command is
 * handed off to the SLI layer.
 */
static void
lpfc_mbx_cmpl_clear_la(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
{
      struct lpfc_vport *vport = pmb->vport;
      struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
      struct lpfc_sli   *psli = &phba->sli;
      MAILBOX_t *mb = &pmb->u.mb;
      uint32_t control;

      /* Since we don't do discovery right now, turn these off here */
      psli->ring[psli->extra_ring].flag &= ~LPFC_STOP_IOCB_EVENT;
      psli->ring[psli->fcp_ring].flag &= ~LPFC_STOP_IOCB_EVENT;
      psli->ring[psli->next_ring].flag &= ~LPFC_STOP_IOCB_EVENT;

      /* Check for error */
      if ((mb->mbxStatus) && (mb->mbxStatus != 0x1601)) {
            /* CLEAR_LA mbox error <mbxStatus> state <hba_state> */
            lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
                         "0320 CLEAR_LA mbxStatus error x%x hba "
                         "state x%x\n",
                         mb->mbxStatus, vport->port_state);
            phba->link_state = LPFC_HBA_ERROR;
            goto out;
      }

      if (vport->port_type == LPFC_PHYSICAL_PORT)
            phba->link_state = LPFC_HBA_READY;

      spin_lock_irq(&phba->hbalock);
      psli->sli_flag |= LPFC_PROCESS_LA;
      control = readl(phba->HCregaddr);
      control |= HC_LAINT_ENA;
      writel(control, phba->HCregaddr);
      readl(phba->HCregaddr); /* flush */
      spin_unlock_irq(&phba->hbalock);
      mempool_free(pmb, phba->mbox_mem_pool);
      return;

out:
      /* Device Discovery completes */
      lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
                   "0225 Device Discovery completes\n");
      mempool_free(pmb, phba->mbox_mem_pool);

      spin_lock_irq(shost->host_lock);
      vport->fc_flag &= ~FC_ABORT_DISCOVERY;
      spin_unlock_irq(shost->host_lock);

      lpfc_can_disctmo(vport);

      /* turn on Link Attention interrupts */

      spin_lock_irq(&phba->hbalock);
      psli->sli_flag |= LPFC_PROCESS_LA;
      control = readl(phba->HCregaddr);
      control |= HC_LAINT_ENA;
      writel(control, phba->HCregaddr);
      readl(phba->HCregaddr); /* flush */
      spin_unlock_irq(&phba->hbalock);

      return;
}


static void
lpfc_mbx_cmpl_local_config_link(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
{
      struct lpfc_vport *vport = pmb->vport;

      if (pmb->u.mb.mbxStatus)
            goto out;

      mempool_free(pmb, phba->mbox_mem_pool);

      if (phba->fc_topology == TOPOLOGY_LOOP &&
          vport->fc_flag & FC_PUBLIC_LOOP &&
          !(vport->fc_flag & FC_LBIT)) {
                  /* Need to wait for FAN - use discovery timer
                   * for timeout.  port_state is identically
                   * LPFC_LOCAL_CFG_LINK while waiting for FAN
                   */
                  lpfc_set_disctmo(vport);
                  return;
      }

      /* Start discovery by sending a FLOGI. port_state is identically
       * LPFC_FLOGI while waiting for FLOGI cmpl
       */
      if (vport->port_state != LPFC_FLOGI) {
            lpfc_initial_flogi(vport);
      }
      return;

out:
      lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
                   "0306 CONFIG_LINK mbxStatus error x%x "
                   "HBA state x%x\n",
                   pmb->u.mb.mbxStatus, vport->port_state);
      mempool_free(pmb, phba->mbox_mem_pool);

      lpfc_linkdown(phba);

      lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
                   "0200 CONFIG_LINK bad hba state x%x\n",
                   vport->port_state);

      lpfc_issue_clear_la(phba, vport);
      return;
}

static void
lpfc_mbx_cmpl_reg_fcfi(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
{
      struct lpfc_vport *vport = mboxq->vport;
      unsigned long flags;

      if (mboxq->u.mb.mbxStatus) {
            lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
                   "2017 REG_FCFI mbxStatus error x%x "
                   "HBA state x%x\n",
                   mboxq->u.mb.mbxStatus, vport->port_state);
            mempool_free(mboxq, phba->mbox_mem_pool);
            return;
      }

      /* Start FCoE discovery by sending a FLOGI. */
      phba->fcf.fcfi = bf_get(lpfc_reg_fcfi_fcfi, &mboxq->u.mqe.un.reg_fcfi);
      /* Set the FCFI registered flag */
      spin_lock_irqsave(&phba->hbalock, flags);
      phba->fcf.fcf_flag |= FCF_REGISTERED;
      spin_unlock_irqrestore(&phba->hbalock, flags);
      if (vport->port_state != LPFC_FLOGI) {
            spin_lock_irqsave(&phba->hbalock, flags);
            phba->fcf.fcf_flag |= (FCF_DISCOVERED | FCF_IN_USE);
            spin_unlock_irqrestore(&phba->hbalock, flags);
            lpfc_initial_flogi(vport);
      }

      mempool_free(mboxq, phba->mbox_mem_pool);
      return;
}

/**
 * lpfc_fab_name_match - Check if the fcf fabric name match.
 * @fab_name: pointer to fabric name.
 * @new_fcf_record: pointer to fcf record.
 *
 * This routine compare the fcf record's fabric name with provided
 * fabric name. If the fabric name are identical this function
 * returns 1 else return 0.
 **/
static uint32_t
lpfc_fab_name_match(uint8_t *fab_name, struct fcf_record *new_fcf_record)
{
      if ((fab_name[0] ==
            bf_get(lpfc_fcf_record_fab_name_0, new_fcf_record)) &&
          (fab_name[1] ==
            bf_get(lpfc_fcf_record_fab_name_1, new_fcf_record)) &&
          (fab_name[2] ==
            bf_get(lpfc_fcf_record_fab_name_2, new_fcf_record)) &&
          (fab_name[3] ==
            bf_get(lpfc_fcf_record_fab_name_3, new_fcf_record)) &&
          (fab_name[4] ==
            bf_get(lpfc_fcf_record_fab_name_4, new_fcf_record)) &&
          (fab_name[5] ==
            bf_get(lpfc_fcf_record_fab_name_5, new_fcf_record)) &&
          (fab_name[6] ==
            bf_get(lpfc_fcf_record_fab_name_6, new_fcf_record)) &&
          (fab_name[7] ==
            bf_get(lpfc_fcf_record_fab_name_7, new_fcf_record)))
            return 1;
      else
            return 0;
}

/**
 * lpfc_mac_addr_match - Check if the fcf mac address match.
 * @phba: pointer to lpfc hba data structure.
 * @new_fcf_record: pointer to fcf record.
 *
 * This routine compare the fcf record's mac address with HBA's
 * FCF mac address. If the mac addresses are identical this function
 * returns 1 else return 0.
 **/
static uint32_t
lpfc_mac_addr_match(struct lpfc_hba *phba, struct fcf_record *new_fcf_record)
{
      if ((phba->fcf.mac_addr[0] ==
            bf_get(lpfc_fcf_record_mac_0, new_fcf_record)) &&
          (phba->fcf.mac_addr[1] ==
            bf_get(lpfc_fcf_record_mac_1, new_fcf_record)) &&
          (phba->fcf.mac_addr[2] ==
            bf_get(lpfc_fcf_record_mac_2, new_fcf_record)) &&
          (phba->fcf.mac_addr[3] ==
            bf_get(lpfc_fcf_record_mac_3, new_fcf_record)) &&
          (phba->fcf.mac_addr[4] ==
            bf_get(lpfc_fcf_record_mac_4, new_fcf_record)) &&
          (phba->fcf.mac_addr[5] ==
            bf_get(lpfc_fcf_record_mac_5, new_fcf_record)))
            return 1;
      else
            return 0;
}

/**
 * lpfc_copy_fcf_record - Copy fcf information to lpfc_hba.
 * @phba: pointer to lpfc hba data structure.
 * @new_fcf_record: pointer to fcf record.
 *
 * This routine copies the FCF information from the FCF
 * record to lpfc_hba data structure.
 **/
static void
lpfc_copy_fcf_record(struct lpfc_hba *phba, struct fcf_record *new_fcf_record)
{
      phba->fcf.fabric_name[0] =
            bf_get(lpfc_fcf_record_fab_name_0, new_fcf_record);
      phba->fcf.fabric_name[1] =
            bf_get(lpfc_fcf_record_fab_name_1, new_fcf_record);
      phba->fcf.fabric_name[2] =
            bf_get(lpfc_fcf_record_fab_name_2, new_fcf_record);
      phba->fcf.fabric_name[3] =
            bf_get(lpfc_fcf_record_fab_name_3, new_fcf_record);
      phba->fcf.fabric_name[4] =
            bf_get(lpfc_fcf_record_fab_name_4, new_fcf_record);
      phba->fcf.fabric_name[5] =
            bf_get(lpfc_fcf_record_fab_name_5, new_fcf_record);
      phba->fcf.fabric_name[6] =
            bf_get(lpfc_fcf_record_fab_name_6, new_fcf_record);
      phba->fcf.fabric_name[7] =
            bf_get(lpfc_fcf_record_fab_name_7, new_fcf_record);
      phba->fcf.mac_addr[0] =
            bf_get(lpfc_fcf_record_mac_0, new_fcf_record);
      phba->fcf.mac_addr[1] =
            bf_get(lpfc_fcf_record_mac_1, new_fcf_record);
      phba->fcf.mac_addr[2] =
            bf_get(lpfc_fcf_record_mac_2, new_fcf_record);
      phba->fcf.mac_addr[3] =
            bf_get(lpfc_fcf_record_mac_3, new_fcf_record);
      phba->fcf.mac_addr[4] =
            bf_get(lpfc_fcf_record_mac_4, new_fcf_record);
      phba->fcf.mac_addr[5] =
            bf_get(lpfc_fcf_record_mac_5, new_fcf_record);
      phba->fcf.fcf_indx = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record);
      phba->fcf.priority = new_fcf_record->fip_priority;
}

/**
 * lpfc_register_fcf - Register the FCF with hba.
 * @phba: pointer to lpfc hba data structure.
 *
 * This routine issues a register fcfi mailbox command to register
 * the fcf with HBA.
 **/
static void
lpfc_register_fcf(struct lpfc_hba *phba)
{
      LPFC_MBOXQ_t *fcf_mbxq;
      int rc;
      unsigned long flags;

      spin_lock_irqsave(&phba->hbalock, flags);

      /* If the FCF is not availabe do nothing. */
      if (!(phba->fcf.fcf_flag & FCF_AVAILABLE)) {
            spin_unlock_irqrestore(&phba->hbalock, flags);
            return;
      }

      /* The FCF is already registered, start discovery */
      if (phba->fcf.fcf_flag & FCF_REGISTERED) {
            phba->fcf.fcf_flag |= (FCF_DISCOVERED | FCF_IN_USE);
            spin_unlock_irqrestore(&phba->hbalock, flags);
            if (phba->pport->port_state != LPFC_FLOGI)
                  lpfc_initial_flogi(phba->pport);
            return;
      }
      spin_unlock_irqrestore(&phba->hbalock, flags);

      fcf_mbxq = mempool_alloc(phba->mbox_mem_pool,
            GFP_KERNEL);
      if (!fcf_mbxq)
            return;

      lpfc_reg_fcfi(phba, fcf_mbxq);
      fcf_mbxq->vport = phba->pport;
      fcf_mbxq->mbox_cmpl = lpfc_mbx_cmpl_reg_fcfi;
      rc = lpfc_sli_issue_mbox(phba, fcf_mbxq, MBX_NOWAIT);
      if (rc == MBX_NOT_FINISHED)
            mempool_free(fcf_mbxq, phba->mbox_mem_pool);

      return;
}

/**
 * lpfc_match_fcf_conn_list - Check if the FCF record can be used for discovery.
 * @phba: pointer to lpfc hba data structure.
 * @new_fcf_record: pointer to fcf record.
 * @boot_flag: Indicates if this record used by boot bios.
 * @addr_mode: The address mode to be used by this FCF
 *
 * This routine compare the fcf record with connect list obtained from the
 * config region to decide if this FCF can be used for SAN discovery. It returns
 * 1 if this record can be used for SAN discovery else return zero. If this FCF
 * record can be used for SAN discovery, the boot_flag will indicate if this FCF
 * is used by boot bios and addr_mode will indicate the addressing mode to be
 * used for this FCF when the function returns.
 * If the FCF record need to be used with a particular vlan id, the vlan is
 * set in the vlan_id on return of the function. If not VLAN tagging need to
 * be used with the FCF vlan_id will be set to 0xFFFF;
 **/
static int
lpfc_match_fcf_conn_list(struct lpfc_hba *phba,
                  struct fcf_record *new_fcf_record,
                  uint32_t *boot_flag, uint32_t *addr_mode,
                  uint16_t *vlan_id)
{
      struct lpfc_fcf_conn_entry *conn_entry;

      /* If FCF not available return 0 */
      if (!bf_get(lpfc_fcf_record_fcf_avail, new_fcf_record) ||
            !bf_get(lpfc_fcf_record_fcf_valid, new_fcf_record))
            return 0;

      if (!phba->cfg_enable_fip) {
            *boot_flag = 0;
            *addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov,
                        new_fcf_record);
            if (phba->valid_vlan)
                  *vlan_id = phba->vlan_id;
            else
                  *vlan_id = 0xFFFF;
            return 1;
      }

      /*
       * If there are no FCF connection table entry, driver connect to all
       * FCFs.
       */
      if (list_empty(&phba->fcf_conn_rec_list)) {
            *boot_flag = 0;
            *addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov,
                  new_fcf_record);

            /*
             * When there are no FCF connect entries, use driver's default
             * addressing mode - FPMA.
             */
            if (*addr_mode & LPFC_FCF_FPMA)
                  *addr_mode = LPFC_FCF_FPMA;

            *vlan_id = 0xFFFF;
            return 1;
      }

      list_for_each_entry(conn_entry, &phba->fcf_conn_rec_list, list) {
            if (!(conn_entry->conn_rec.flags & FCFCNCT_VALID))
                  continue;

            if ((conn_entry->conn_rec.flags & FCFCNCT_FBNM_VALID) &&
                  !lpfc_fab_name_match(conn_entry->conn_rec.fabric_name,
                        new_fcf_record))
                  continue;

            if (conn_entry->conn_rec.flags & FCFCNCT_VLAN_VALID) {
                  /*
                   * If the vlan bit map does not have the bit set for the
                   * vlan id to be used, then it is not a match.
                   */
                  if (!(new_fcf_record->vlan_bitmap
                        [conn_entry->conn_rec.vlan_tag / 8] &
                        (1 << (conn_entry->conn_rec.vlan_tag % 8))))
                        continue;
            }

            /*
             * If connection record does not support any addressing mode,
             * skip the FCF record.
             */
            if (!(bf_get(lpfc_fcf_record_mac_addr_prov, new_fcf_record)
                  & (LPFC_FCF_FPMA | LPFC_FCF_SPMA)))
                  continue;

            /*
             * Check if the connection record specifies a required
             * addressing mode.
             */
            if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) &&
                  !(conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED)) {

                  /*
                   * If SPMA required but FCF not support this continue.
                   */
                  if ((conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) &&
                        !(bf_get(lpfc_fcf_record_mac_addr_prov,
                              new_fcf_record) & LPFC_FCF_SPMA))
                        continue;

                  /*
                   * If FPMA required but FCF not support this continue.
                   */
                  if (!(conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) &&
                        !(bf_get(lpfc_fcf_record_mac_addr_prov,
                        new_fcf_record) & LPFC_FCF_FPMA))
                        continue;
            }

            /*
             * This fcf record matches filtering criteria.
             */
            if (conn_entry->conn_rec.flags & FCFCNCT_BOOT)
                  *boot_flag = 1;
            else
                  *boot_flag = 0;

            /*
             * If user did not specify any addressing mode, or if the
             * prefered addressing mode specified by user is not supported
             * by FCF, allow fabric to pick the addressing mode.
             */
            *addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov,
                        new_fcf_record);
            /*
             * If the user specified a required address mode, assign that
             * address mode
             */
            if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) &&
                  (!(conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED)))
                  *addr_mode = (conn_entry->conn_rec.flags &
                        FCFCNCT_AM_SPMA) ?
                        LPFC_FCF_SPMA : LPFC_FCF_FPMA;
            /*
             * If the user specified a prefered address mode, use the
             * addr mode only if FCF support the addr_mode.
             */
            else if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) &&
                  (conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED) &&
                  (conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) &&
                  (*addr_mode & LPFC_FCF_SPMA))
                        *addr_mode = LPFC_FCF_SPMA;
            else if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) &&
                  (conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED) &&
                  !(conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) &&
                  (*addr_mode & LPFC_FCF_FPMA))
                        *addr_mode = LPFC_FCF_FPMA;

            if (conn_entry->conn_rec.flags & FCFCNCT_VLAN_VALID)
                  *vlan_id = conn_entry->conn_rec.vlan_tag;
            else
                  *vlan_id = 0xFFFF;

            return 1;
      }

      return 0;
}

/**
 * lpfc_mbx_cmpl_read_fcf_record - Completion handler for read_fcf mbox.
 * @phba: pointer to lpfc hba data structure.
 * @mboxq: pointer to mailbox object.
 *
 * This function iterate through all the fcf records available in
 * HBA and choose the optimal FCF record for discovery. After finding
 * the FCF for discovery it register the FCF record and kick start
 * discovery.
 * If FCF_IN_USE flag is set in currently used FCF, the routine try to
 * use a FCF record which match fabric name and mac address of the
 * currently used FCF record.
 * If the driver support only one FCF, it will try to use the FCF record
 * used by BOOT_BIOS.
 */
void
lpfc_mbx_cmpl_read_fcf_record(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
{
      void *virt_addr;
      dma_addr_t phys_addr;
      uint8_t *bytep;
      struct lpfc_mbx_sge sge;
      struct lpfc_mbx_read_fcf_tbl *read_fcf;
      uint32_t shdr_status, shdr_add_status;
      union lpfc_sli4_cfg_shdr *shdr;
      struct fcf_record *new_fcf_record;
      int rc;
      uint32_t boot_flag, addr_mode;
      uint32_t next_fcf_index;
      unsigned long flags;
      uint16_t vlan_id;

      /* Get the first SGE entry from the non-embedded DMA memory. This
       * routine only uses a single SGE.
       */
      lpfc_sli4_mbx_sge_get(mboxq, 0, &sge);
      phys_addr = getPaddr(sge.pa_hi, sge.pa_lo);
      if (unlikely(!mboxq->sge_array)) {
            lpfc_printf_log(phba, KERN_ERR, LOG_MBOX,
                        "2524 Failed to get the non-embedded SGE "
                        "virtual address\n");
            goto out;
      }
      virt_addr = mboxq->sge_array->addr[0];

      shdr = (union lpfc_sli4_cfg_shdr *)virt_addr;
      shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
      shdr_add_status = bf_get(lpfc_mbox_hdr_add_status,
                         &shdr->response);
      /*
       * The FCF Record was read and there is no reason for the driver
       * to maintain the FCF record data or memory. Instead, just need
       * to book keeping the FCFIs can be used.
       */
      if (shdr_status || shdr_add_status) {
            lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
                        "2521 READ_FCF_RECORD mailbox failed "
                        "with status x%x add_status x%x, mbx\n",
                        shdr_status, shdr_add_status);
            goto out;
      }
      /* Interpreting the returned information of FCF records */
      read_fcf = (struct lpfc_mbx_read_fcf_tbl *)virt_addr;
      lpfc_sli_pcimem_bcopy(read_fcf, read_fcf,
                        sizeof(struct lpfc_mbx_read_fcf_tbl));
      next_fcf_index = bf_get(lpfc_mbx_read_fcf_tbl_nxt_vindx, read_fcf);

      new_fcf_record = (struct fcf_record *)(virt_addr +
                    sizeof(struct lpfc_mbx_read_fcf_tbl));
      lpfc_sli_pcimem_bcopy(new_fcf_record, new_fcf_record,
                        sizeof(struct fcf_record));
      bytep = virt_addr + sizeof(union lpfc_sli4_cfg_shdr);

      rc = lpfc_match_fcf_conn_list(phba, new_fcf_record,
                              &boot_flag, &addr_mode,
                              &vlan_id);
      /*
       * If the fcf record does not match with connect list entries
       * read the next entry.
       */
      if (!rc)
            goto read_next_fcf;
      /*
       * If this is not the first FCF discovery of the HBA, use last
       * FCF record for the discovery.
       */
      spin_lock_irqsave(&phba->hbalock, flags);
      if (phba->fcf.fcf_flag & FCF_IN_USE) {
            if (lpfc_fab_name_match(phba->fcf.fabric_name,
                  new_fcf_record) &&
                lpfc_mac_addr_match(phba, new_fcf_record)) {
                  phba->fcf.fcf_flag |= FCF_AVAILABLE;
                  spin_unlock_irqrestore(&phba->hbalock, flags);
                  goto out;
            }
            spin_unlock_irqrestore(&phba->hbalock, flags);
            goto read_next_fcf;
      }
      if (phba->fcf.fcf_flag & FCF_AVAILABLE) {
            /*
             * If the current FCF record does not have boot flag
             * set and new fcf record has boot flag set, use the
             * new fcf record.
             */
            if (boot_flag && !(phba->fcf.fcf_flag & FCF_BOOT_ENABLE)) {
                  /* Use this FCF record */
                  lpfc_copy_fcf_record(phba, new_fcf_record);
                  phba->fcf.addr_mode = addr_mode;
                  phba->fcf.fcf_flag |= FCF_BOOT_ENABLE;
                  if (vlan_id != 0xFFFF) {
                        phba->fcf.fcf_flag |= FCF_VALID_VLAN;
                        phba->fcf.vlan_id = vlan_id;
                  }
                  spin_unlock_irqrestore(&phba->hbalock, flags);
                  goto read_next_fcf;
            }
            /*
             * If the current FCF record has boot flag set and the
             * new FCF record does not have boot flag, read the next
             * FCF record.
             */
            if (!boot_flag && (phba->fcf.fcf_flag & FCF_BOOT_ENABLE)) {
                  spin_unlock_irqrestore(&phba->hbalock, flags);
                  goto read_next_fcf;
            }
            /*
             * If there is a record with lower priority value for
             * the current FCF, use that record.
             */
            if (lpfc_fab_name_match(phba->fcf.fabric_name, new_fcf_record)
                  && (new_fcf_record->fip_priority <
                        phba->fcf.priority)) {
                  /* Use this FCF record */
                  lpfc_copy_fcf_record(phba, new_fcf_record);
                  phba->fcf.addr_mode = addr_mode;
                  if (vlan_id != 0xFFFF) {
                        phba->fcf.fcf_flag |= FCF_VALID_VLAN;
                        phba->fcf.vlan_id = vlan_id;
                  }
                  spin_unlock_irqrestore(&phba->hbalock, flags);
                  goto read_next_fcf;
            }
            spin_unlock_irqrestore(&phba->hbalock, flags);
            goto read_next_fcf;
      }
      /*
       * This is the first available FCF record, use this
       * record.
       */
      lpfc_copy_fcf_record(phba, new_fcf_record);
      phba->fcf.addr_mode = addr_mode;
      if (boot_flag)
            phba->fcf.fcf_flag |= FCF_BOOT_ENABLE;
      phba->fcf.fcf_flag |= FCF_AVAILABLE;
      if (vlan_id != 0xFFFF) {
            phba->fcf.fcf_flag |= FCF_VALID_VLAN;
            phba->fcf.vlan_id = vlan_id;
      }
      spin_unlock_irqrestore(&phba->hbalock, flags);
      goto read_next_fcf;

read_next_fcf:
      lpfc_sli4_mbox_cmd_free(phba, mboxq);
      if (next_fcf_index == LPFC_FCOE_FCF_NEXT_NONE || next_fcf_index == 0)
            lpfc_register_fcf(phba);
      else
            lpfc_sli4_read_fcf_record(phba, next_fcf_index);
      return;

out:
      lpfc_sli4_mbox_cmd_free(phba, mboxq);
      lpfc_register_fcf(phba);

      return;
}

/**
 * lpfc_start_fdiscs - send fdiscs for each vports on this port.
 * @phba: pointer to lpfc hba data structure.
 *
 * This function loops through the list of vports on the @phba and issues an
 * FDISC if possible.
 */
void
lpfc_start_fdiscs(struct lpfc_hba *phba)
{
      struct lpfc_vport **vports;
      int i;

      vports = lpfc_create_vport_work_array(phba);
      if (vports != NULL) {
            for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
                  if (vports[i]->port_type == LPFC_PHYSICAL_PORT)
                        continue;
                  /* There are no vpi for this vport */
                  if (vports[i]->vpi > phba->max_vpi) {
                        lpfc_vport_set_state(vports[i],
                                         FC_VPORT_FAILED);
                        continue;
                  }
                  if (phba->fc_topology == TOPOLOGY_LOOP) {
                        lpfc_vport_set_state(vports[i],
                                         FC_VPORT_LINKDOWN);
                        continue;
                  }
                  if (phba->link_flag & LS_NPIV_FAB_SUPPORTED)
                        lpfc_initial_fdisc(vports[i]);
                  else {
                        lpfc_vport_set_state(vports[i],
                                         FC_VPORT_NO_FABRIC_SUPP);
                        lpfc_printf_vlog(vports[i], KERN_ERR,
                                     LOG_ELS,
                                     "0259 No NPIV "
                                     "Fabric support\n");
                  }
            }
      }
      lpfc_destroy_vport_work_array(phba, vports);
}

void
lpfc_mbx_cmpl_reg_vfi(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
{
      struct lpfc_dmabuf *dmabuf = mboxq->context1;
      struct lpfc_vport *vport = mboxq->vport;

      if (mboxq->u.mb.mbxStatus) {
            lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
                   "2018 REG_VFI mbxStatus error x%x "
                   "HBA state x%x\n",
                   mboxq->u.mb.mbxStatus, vport->port_state);
            if (phba->fc_topology == TOPOLOGY_LOOP) {
                  /* FLOGI failed, use loop map to make discovery list */
                  lpfc_disc_list_loopmap(vport);
                  /* Start discovery */
                  lpfc_disc_start(vport);
                  goto fail_free_mem;
            }
            lpfc_vport_set_state(vport, FC_VPORT_FAILED);
            goto fail_free_mem;
      }
      /* Mark the vport has registered with its VFI */
      vport->vfi_state |= LPFC_VFI_REGISTERED;

      if (vport->port_state == LPFC_FABRIC_CFG_LINK) {
            lpfc_start_fdiscs(phba);
            lpfc_do_scr_ns_plogi(phba, vport);
      }

fail_free_mem:
      mempool_free(mboxq, phba->mbox_mem_pool);
      lpfc_mbuf_free(phba, dmabuf->virt, dmabuf->phys);
      kfree(dmabuf);
      return;
}

static void
lpfc_mbx_cmpl_read_sparam(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
{
      MAILBOX_t *mb = &pmb->u.mb;
      struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) pmb->context1;
      struct lpfc_vport  *vport = pmb->vport;


      /* Check for error */
      if (mb->mbxStatus) {
            /* READ_SPARAM mbox error <mbxStatus> state <hba_state> */
            lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
                         "0319 READ_SPARAM mbxStatus error x%x "
                         "hba state x%x>\n",
                         mb->mbxStatus, vport->port_state);
            lpfc_linkdown(phba);
            goto out;
      }

      memcpy((uint8_t *) &vport->fc_sparam, (uint8_t *) mp->virt,
             sizeof (struct serv_parm));
      if (phba->cfg_soft_wwnn)
            u64_to_wwn(phba->cfg_soft_wwnn,
                     vport->fc_sparam.nodeName.u.wwn);
      if (phba->cfg_soft_wwpn)
            u64_to_wwn(phba->cfg_soft_wwpn,
                     vport->fc_sparam.portName.u.wwn);
      memcpy(&vport->fc_nodename, &vport->fc_sparam.nodeName,
             sizeof(vport->fc_nodename));
      memcpy(&vport->fc_portname, &vport->fc_sparam.portName,
             sizeof(vport->fc_portname));
      if (vport->port_type == LPFC_PHYSICAL_PORT) {
            memcpy(&phba->wwnn, &vport->fc_nodename, sizeof(phba->wwnn));
            memcpy(&phba->wwpn, &vport->fc_portname, sizeof(phba->wwnn));
      }

      lpfc_mbuf_free(phba, mp->virt, mp->phys);
      kfree(mp);
      mempool_free(pmb, phba->mbox_mem_pool);
      return;

out:
      pmb->context1 = NULL;
      lpfc_mbuf_free(phba, mp->virt, mp->phys);
      kfree(mp);
      lpfc_issue_clear_la(phba, vport);
      mempool_free(pmb, phba->mbox_mem_pool);
      return;
}

static void
lpfc_mbx_process_link_up(struct lpfc_hba *phba, READ_LA_VAR *la)
{
      struct lpfc_vport *vport = phba->pport;
      LPFC_MBOXQ_t *sparam_mbox, *cfglink_mbox = NULL;
      int i;
      struct lpfc_dmabuf *mp;
      int rc;
      struct fcf_record *fcf_record;

      sparam_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);

      spin_lock_irq(&phba->hbalock);
      switch (la->UlnkSpeed) {
      case LA_1GHZ_LINK:
            phba->fc_linkspeed = LA_1GHZ_LINK;
            break;
      case LA_2GHZ_LINK:
            phba->fc_linkspeed = LA_2GHZ_LINK;
            break;
      case LA_4GHZ_LINK:
            phba->fc_linkspeed = LA_4GHZ_LINK;
            break;
      case LA_8GHZ_LINK:
            phba->fc_linkspeed = LA_8GHZ_LINK;
            break;
      case LA_10GHZ_LINK:
            phba->fc_linkspeed = LA_10GHZ_LINK;
            break;
      default:
            phba->fc_linkspeed = LA_UNKNW_LINK;
            break;
      }

      phba->fc_topology = la->topology;
      phba->link_flag &= ~LS_NPIV_FAB_SUPPORTED;

      if (phba->fc_topology == TOPOLOGY_LOOP) {
            phba->sli3_options &= ~LPFC_SLI3_NPIV_ENABLED;

            if (phba->cfg_enable_npiv)
                  lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
                        "1309 Link Up Event npiv not supported in loop "
                        "topology\n");
                        /* Get Loop Map information */
            if (la->il)
                  vport->fc_flag |= FC_LBIT;

            vport->fc_myDID = la->granted_AL_PA;
            i = la->un.lilpBde64.tus.f.bdeSize;

            if (i == 0) {
                  phba->alpa_map[0] = 0;
            } else {
                  if (vport->cfg_log_verbose & LOG_LINK_EVENT) {
                        int numalpa, j, k;
                        union {
                              uint8_t pamap[16];
                              struct {
                                    uint32_t wd1;
                                    uint32_t wd2;
                                    uint32_t wd3;
                                    uint32_t wd4;
                              } pa;
                        } un;
                        numalpa = phba->alpa_map[0];
                        j = 0;
                        while (j < numalpa) {
                              memset(un.pamap, 0, 16);
                              for (k = 1; j < numalpa; k++) {
                                    un.pamap[k - 1] =
                                          phba->alpa_map[j + 1];
                                    j++;
                                    if (k == 16)
                                          break;
                              }
                              /* Link Up Event ALPA map */
                              lpfc_printf_log(phba,
                                          KERN_WARNING,
                                          LOG_LINK_EVENT,
                                          "1304 Link Up Event "
                                          "ALPA map Data: x%x "
                                          "x%x x%x x%x\n",
                                          un.pa.wd1, un.pa.wd2,
                                          un.pa.wd3, un.pa.wd4);
                        }
                  }
            }
      } else {
            if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)) {
                  if (phba->max_vpi && phba->cfg_enable_npiv &&
                     (phba->sli_rev == 3))
                        phba->sli3_options |= LPFC_SLI3_NPIV_ENABLED;
            }
            vport->fc_myDID = phba->fc_pref_DID;
            vport->fc_flag |= FC_LBIT;
      }
      spin_unlock_irq(&phba->hbalock);

      lpfc_linkup(phba);
      if (sparam_mbox) {
            lpfc_read_sparam(phba, sparam_mbox, 0);
            sparam_mbox->vport = vport;
            sparam_mbox->mbox_cmpl = lpfc_mbx_cmpl_read_sparam;
            rc = lpfc_sli_issue_mbox(phba, sparam_mbox, MBX_NOWAIT);
            if (rc == MBX_NOT_FINISHED) {
                  mp = (struct lpfc_dmabuf *) sparam_mbox->context1;
                  lpfc_mbuf_free(phba, mp->virt, mp->phys);
                  kfree(mp);
                  mempool_free(sparam_mbox, phba->mbox_mem_pool);
                  goto out;
            }
      }

      if (!(phba->hba_flag & HBA_FCOE_SUPPORT)) {
            cfglink_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
            if (!cfglink_mbox)
                  goto out;
            vport->port_state = LPFC_LOCAL_CFG_LINK;
            lpfc_config_link(phba, cfglink_mbox);
            cfglink_mbox->vport = vport;
            cfglink_mbox->mbox_cmpl = lpfc_mbx_cmpl_local_config_link;
            rc = lpfc_sli_issue_mbox(phba, cfglink_mbox, MBX_NOWAIT);
            if (rc == MBX_NOT_FINISHED) {
                  mempool_free(cfglink_mbox, phba->mbox_mem_pool);
                  goto out;
            }
      } else {
            /*
             * Add the driver's default FCF record at FCF index 0 now. This
             * is phase 1 implementation that support FCF index 0 and driver
             * defaults.
             */
            if (phba->cfg_enable_fip == 0) {
                  fcf_record = kzalloc(sizeof(struct fcf_record),
                              GFP_KERNEL);
                  if (unlikely(!fcf_record)) {
                        lpfc_printf_log(phba, KERN_ERR,
                              LOG_MBOX | LOG_SLI,
                              "2554 Could not allocate memmory for "
                              "fcf record\n");
                        rc = -ENODEV;
                        goto out;
                  }

                  lpfc_sli4_build_dflt_fcf_record(phba, fcf_record,
                                    LPFC_FCOE_FCF_DEF_INDEX);
                  rc = lpfc_sli4_add_fcf_record(phba, fcf_record);
                  if (unlikely(rc)) {
                        lpfc_printf_log(phba, KERN_ERR,
                              LOG_MBOX | LOG_SLI,
                              "2013 Could not manually add FCF "
                              "record 0, status %d\n", rc);
                        rc = -ENODEV;
                        kfree(fcf_record);
                        goto out;
                  }
                  kfree(fcf_record);
            }
            /*
             * The driver is expected to do FIP/FCF. Call the port
             * and get the FCF Table.
             */
            rc = lpfc_sli4_read_fcf_record(phba,
                              LPFC_FCOE_FCF_GET_FIRST);
            if (rc)
                  goto out;
      }

      return;
out:
      lpfc_vport_set_state(vport, FC_VPORT_FAILED);
      lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
                   "0263 Discovery Mailbox error: state: 0x%x : %p %p\n",
                   vport->port_state, sparam_mbox, cfglink_mbox);
      lpfc_issue_clear_la(phba, vport);
      return;
}

static void
lpfc_enable_la(struct lpfc_hba *phba)
{
      uint32_t control;
      struct lpfc_sli *psli = &phba->sli;
      spin_lock_irq(&phba->hbalock);
      psli->sli_flag |= LPFC_PROCESS_LA;
      if (phba->sli_rev <= LPFC_SLI_REV3) {
            control = readl(phba->HCregaddr);
            control |= HC_LAINT_ENA;
            writel(control, phba->HCregaddr);
            readl(phba->HCregaddr); /* flush */
      }
      spin_unlock_irq(&phba->hbalock);
}

static void
lpfc_mbx_issue_link_down(struct lpfc_hba *phba)
{
      lpfc_linkdown(phba);
      lpfc_enable_la(phba);
      lpfc_unregister_unused_fcf(phba);
      /* turn on Link Attention interrupts - no CLEAR_LA needed */
}


/*
 * This routine handles processing a READ_LA mailbox
 * command upon completion. It is setup in the LPFC_MBOXQ
 * as the completion routine when the command is
 * handed off to the SLI layer.
 */
void
lpfc_mbx_cmpl_read_la(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
{
      struct lpfc_vport *vport = pmb->vport;
      struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
      READ_LA_VAR *la;
      MAILBOX_t *mb = &pmb->u.mb;
      struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);

      /* Unblock ELS traffic */
      phba->sli.ring[LPFC_ELS_RING].flag &= ~LPFC_STOP_IOCB_EVENT;
      /* Check for error */
      if (mb->mbxStatus) {
            lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT,
                        "1307 READ_LA mbox error x%x state x%x\n",
                        mb->mbxStatus, vport->port_state);
            lpfc_mbx_issue_link_down(phba);
            phba->link_state = LPFC_HBA_ERROR;
            goto lpfc_mbx_cmpl_read_la_free_mbuf;
      }

      la = (READ_LA_VAR *) &pmb->u.mb.un.varReadLA;

      memcpy(&phba->alpa_map[0], mp->virt, 128);

      spin_lock_irq(shost->host_lock);
      if (la->pb)
            vport->fc_flag |= FC_BYPASSED_MODE;
      else
            vport->fc_flag &= ~FC_BYPASSED_MODE;
      spin_unlock_irq(shost->host_lock);

      if ((phba->fc_eventTag  < la->eventTag) ||
          (phba->fc_eventTag == la->eventTag)) {
            phba->fc_stat.LinkMultiEvent++;
            if (la->attType == AT_LINK_UP)
                  if (phba->fc_eventTag != 0)
                        lpfc_linkdown(phba);
      }

      phba->fc_eventTag = la->eventTag;
      if (la->mm)
            phba->sli.sli_flag |= LPFC_MENLO_MAINT;
      else
            phba->sli.sli_flag &= ~LPFC_MENLO_MAINT;

      if (la->attType == AT_LINK_UP && (!la->mm)) {
            phba->fc_stat.LinkUp++;
            if (phba->link_flag & LS_LOOPBACK_MODE) {
                  lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
                              "1306 Link Up Event in loop back mode "
                              "x%x received Data: x%x x%x x%x x%x\n",
                              la->eventTag, phba->fc_eventTag,
                              la->granted_AL_PA, la->UlnkSpeed,
                              phba->alpa_map[0]);
            } else {
                  lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
                              "1303 Link Up Event x%x received "
                              "Data: x%x x%x x%x x%x x%x x%x %d\n",
                              la->eventTag, phba->fc_eventTag,
                              la->granted_AL_PA, la->UlnkSpeed,
                              phba->alpa_map[0],
                              la->mm, la->fa,
                              phba->wait_4_mlo_maint_flg);
            }
            lpfc_mbx_process_link_up(phba, la);
      } else if (la->attType == AT_LINK_DOWN) {
            phba->fc_stat.LinkDown++;
            if (phba->link_flag & LS_LOOPBACK_MODE) {
                  lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
                        "1308 Link Down Event in loop back mode "
                        "x%x received "
                        "Data: x%x x%x x%x\n",
                        la->eventTag, phba->fc_eventTag,
                        phba->pport->port_state, vport->fc_flag);
            }
            else {
                  lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
                        "1305 Link Down Event x%x received "
                        "Data: x%x x%x x%x x%x x%x\n",
                        la->eventTag, phba->fc_eventTag,
                        phba->pport->port_state, vport->fc_flag,
                        la->mm, la->fa);
            }
            lpfc_mbx_issue_link_down(phba);
      }
      if (la->mm && la->attType == AT_LINK_UP) {
            if (phba->link_state != LPFC_LINK_DOWN) {
                  phba->fc_stat.LinkDown++;
                  lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
                        "1312 Link Down Event x%x received "
                        "Data: x%x x%x x%x\n",
                        la->eventTag, phba->fc_eventTag,
                        phba->pport->port_state, vport->fc_flag);
                  lpfc_mbx_issue_link_down(phba);
            } else
                  lpfc_enable_la(phba);

            lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
                        "1310 Menlo Maint Mode Link up Event x%x rcvd "
                        "Data: x%x x%x x%x\n",
                        la->eventTag, phba->fc_eventTag,
                        phba->pport->port_state, vport->fc_flag);
            /*
             * The cmnd that triggered this will be waiting for this
             * signal.
             */
            /* WAKEUP for MENLO_SET_MODE or MENLO_RESET command. */
            if (phba->wait_4_mlo_maint_flg) {
                  phba->wait_4_mlo_maint_flg = 0;
                  wake_up_interruptible(&phba->wait_4_mlo_m_q);
            }
      }

      if (la->fa) {
            if (la->mm)
                  lpfc_issue_clear_la(phba, vport);
            lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT,
                        "1311 fa %d\n", la->fa);
      }

lpfc_mbx_cmpl_read_la_free_mbuf:
      lpfc_mbuf_free(phba, mp->virt, mp->phys);
      kfree(mp);
      mempool_free(pmb, phba->mbox_mem_pool);
      return;
}

/*
 * This routine handles processing a REG_LOGIN mailbox
 * command upon completion. It is setup in the LPFC_MBOXQ
 * as the completion routine when the command is
 * handed off to the SLI layer.
 */
void
lpfc_mbx_cmpl_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
{
      struct lpfc_vport  *vport = pmb->vport;
      struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
      struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2;

      pmb->context1 = NULL;

      /* Good status, call state machine */
      lpfc_disc_state_machine(vport, ndlp, pmb, NLP_EVT_CMPL_REG_LOGIN);
      lpfc_mbuf_free(phba, mp->virt, mp->phys);
      kfree(mp);
      mempool_free(pmb, phba->mbox_mem_pool);
      /* decrement the node reference count held for this callback
       * function.
       */
      lpfc_nlp_put(ndlp);

      return;
}

static void
lpfc_mbx_cmpl_unreg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
{
      MAILBOX_t *mb = &pmb->u.mb;
      struct lpfc_vport *vport = pmb->vport;
      struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);

      switch (mb->mbxStatus) {
      case 0x0011:
      case 0x0020:
      case 0x9700:
            lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
                         "0911 cmpl_unreg_vpi, mb status = 0x%x\n",
                         mb->mbxStatus);
            break;
      }
      vport->unreg_vpi_cmpl = VPORT_OK;
      mempool_free(pmb, phba->mbox_mem_pool);
      /*
       * This shost reference might have been taken at the beginning of
       * lpfc_vport_delete()
       */
      if (vport->load_flag & FC_UNLOADING)
            scsi_host_put(shost);
}

int
lpfc_mbx_unreg_vpi(struct lpfc_vport *vport)
{
      struct lpfc_hba  *phba = vport->phba;
      LPFC_MBOXQ_t *mbox;
      int rc;

      mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
      if (!mbox)
            return 1;

      lpfc_unreg_vpi(phba, vport->vpi, mbox);
      mbox->vport = vport;
      mbox->mbox_cmpl = lpfc_mbx_cmpl_unreg_vpi;
      rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
      if (rc == MBX_NOT_FINISHED) {
            lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX | LOG_VPORT,
                         "1800 Could not issue unreg_vpi\n");
            mempool_free(mbox, phba->mbox_mem_pool);
            vport->unreg_vpi_cmpl = VPORT_ERROR;
            return rc;
      }
      return 0;
}

static void
lpfc_mbx_cmpl_reg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
{
      struct lpfc_vport *vport = pmb->vport;
      struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
      MAILBOX_t *mb = &pmb->u.mb;

      switch (mb->mbxStatus) {
      case 0x0011:
      case 0x9601:
      case 0x9602:
            lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
                         "0912 cmpl_reg_vpi, mb status = 0x%x\n",
                         mb->mbxStatus);
            lpfc_vport_set_state(vport, FC_VPORT_FAILED);
            spin_lock_irq(shost->host_lock);
            vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
            spin_unlock_irq(shost->host_lock);
            vport->fc_myDID = 0;
            goto out;
      }

      vport->num_disc_nodes = 0;
      /* go thru NPR list and issue ELS PLOGIs */
      if (vport->fc_npr_cnt)
            lpfc_els_disc_plogi(vport);

      if (!vport->num_disc_nodes) {
            spin_lock_irq(shost->host_lock);
            vport->fc_flag &= ~FC_NDISC_ACTIVE;
            spin_unlock_irq(shost->host_lock);
            lpfc_can_disctmo(vport);
      }
      vport->port_state = LPFC_VPORT_READY;

out:
      mempool_free(pmb, phba->mbox_mem_pool);
      return;
}

/**
 * lpfc_create_static_vport - Read HBA config region to create static vports.
 * @phba: pointer to lpfc hba data structure.
 *
 * This routine issue a DUMP mailbox command for config region 22 to get
 * the list of static vports to be created. The function create vports
 * based on the information returned from the HBA.
 **/
void
lpfc_create_static_vport(struct lpfc_hba *phba)
{
      LPFC_MBOXQ_t *pmb = NULL;
      MAILBOX_t *mb;
      struct static_vport_info *vport_info;
      int rc, i;
      struct fc_vport_identifiers vport_id;
      struct fc_vport *new_fc_vport;
      struct Scsi_Host *shost;
      struct lpfc_vport *vport;
      uint16_t offset = 0;
      uint8_t *vport_buff;

      pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
      if (!pmb) {
            lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
                        "0542 lpfc_create_static_vport failed to"
                        " allocate mailbox memory\n");
            return;
      }

      mb = &pmb->u.mb;

      vport_info = kzalloc(sizeof(struct static_vport_info), GFP_KERNEL);
      if (!vport_info) {
            lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
                        "0543 lpfc_create_static_vport failed to"
                        " allocate vport_info\n");
            mempool_free(pmb, phba->mbox_mem_pool);
            return;
      }

      vport_buff = (uint8_t *) vport_info;
      do {
            lpfc_dump_static_vport(phba, pmb, offset);
            pmb->vport = phba->pport;
            rc = lpfc_sli_issue_mbox_wait(phba, pmb, LPFC_MBOX_TMO);

            if ((rc != MBX_SUCCESS) || mb->mbxStatus) {
                  lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
                        "0544 lpfc_create_static_vport failed to"
                        " issue dump mailbox command ret 0x%x "
                        "status 0x%x\n",
                        rc, mb->mbxStatus);
                  goto out;
            }

            if (mb->un.varDmp.word_cnt >
                  sizeof(struct static_vport_info) - offset)
                  mb->un.varDmp.word_cnt =
                  sizeof(struct static_vport_info) - offset;

            lpfc_sli_pcimem_bcopy(((uint8_t *)mb) + DMP_RSP_OFFSET,
                  vport_buff + offset,
                  mb->un.varDmp.word_cnt);
            offset += mb->un.varDmp.word_cnt;

      } while (mb->un.varDmp.word_cnt &&
            offset < sizeof(struct static_vport_info));


      if ((le32_to_cpu(vport_info->signature) != VPORT_INFO_SIG) ||
            ((le32_to_cpu(vport_info->rev) & VPORT_INFO_REV_MASK)
                  != VPORT_INFO_REV)) {
            lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
                  "0545 lpfc_create_static_vport bad"
                  " information header 0x%x 0x%x\n",
                  le32_to_cpu(vport_info->signature),
                  le32_to_cpu(vport_info->rev) & VPORT_INFO_REV_MASK);

            goto out;
      }

      shost = lpfc_shost_from_vport(phba->pport);

      for (i = 0; i < MAX_STATIC_VPORT_COUNT; i++) {
            memset(&vport_id, 0, sizeof(vport_id));
            vport_id.port_name = wwn_to_u64(vport_info->vport_list[i].wwpn);
            vport_id.node_name = wwn_to_u64(vport_info->vport_list[i].wwnn);
            if (!vport_id.port_name || !vport_id.node_name)
                  continue;

            vport_id.roles = FC_PORT_ROLE_FCP_INITIATOR;
            vport_id.vport_type = FC_PORTTYPE_NPIV;
            vport_id.disable = false;
            new_fc_vport = fc_vport_create(shost, 0, &vport_id);

            if (!new_fc_vport) {
                  lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
                        "0546 lpfc_create_static_vport failed to"
                        " create vport \n");
                  continue;
            }

            vport = *(struct lpfc_vport **)new_fc_vport->dd_data;
            vport->vport_flag |= STATIC_VPORT;
      }

out:
      /*
       * If this is timed out command, setting NULL to context2 tell SLI
       * layer not to use this buffer.
       */
      spin_lock_irq(&phba->hbalock);
      pmb->context2 = NULL;
      spin_unlock_irq(&phba->hbalock);
      kfree(vport_info);
      if (rc != MBX_TIMEOUT)
            mempool_free(pmb, phba->mbox_mem_pool);

      return;
}

/*
 * This routine handles processing a Fabric REG_LOGIN mailbox
 * command upon completion. It is setup in the LPFC_MBOXQ
 * as the completion routine when the command is
 * handed off to the SLI layer.
 */
void
lpfc_mbx_cmpl_fabric_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
{
      struct lpfc_vport *vport = pmb->vport;
      MAILBOX_t *mb = &pmb->u.mb;
      struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
      struct lpfc_nodelist *ndlp;

      ndlp = (struct lpfc_nodelist *) pmb->context2;
      pmb->context1 = NULL;
      pmb->context2 = NULL;
      if (mb->mbxStatus) {
            lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
                         "0258 Register Fabric login error: 0x%x\n",
                         mb->mbxStatus);
            lpfc_mbuf_free(phba, mp->virt, mp->phys);
            kfree(mp);
            mempool_free(pmb, phba->mbox_mem_pool);

            if (phba->fc_topology == TOPOLOGY_LOOP) {
                  /* FLOGI failed, use loop map to make discovery list */
                  lpfc_disc_list_loopmap(vport);

                  /* Start discovery */
                  lpfc_disc_start(vport);
                  /* Decrement the reference count to ndlp after the
                   * reference to the ndlp are done.
                   */
                  lpfc_nlp_put(ndlp);
                  return;
            }

            lpfc_vport_set_state(vport, FC_VPORT_FAILED);
            /* Decrement the reference count to ndlp after the reference
             * to the ndlp are done.
             */
            lpfc_nlp_put(ndlp);
            return;
      }

      ndlp->nlp_rpi = mb->un.varWords[0];
      ndlp->nlp_flag |= NLP_RPI_VALID;
      ndlp->nlp_type |= NLP_FABRIC;
      lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);

      if (vport->port_state == LPFC_FABRIC_CFG_LINK) {
            lpfc_start_fdiscs(phba);
            lpfc_do_scr_ns_plogi(phba, vport);
      }

      lpfc_mbuf_free(phba, mp->virt, mp->phys);
      kfree(mp);
      mempool_free(pmb, phba->mbox_mem_pool);

      /* Drop the reference count from the mbox at the end after
       * all the current reference to the ndlp have been done.
       */
      lpfc_nlp_put(ndlp);
      return;
}

/*
 * This routine handles processing a NameServer REG_LOGIN mailbox
 * command upon completion. It is setup in the LPFC_MBOXQ
 * as the completion routine when the command is
 * handed off to the SLI layer.
 */
void
lpfc_mbx_cmpl_ns_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
{
      MAILBOX_t *mb = &pmb->u.mb;
      struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
      struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2;
      struct lpfc_vport *vport = pmb->vport;

      if (mb->mbxStatus) {
out:
            lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
                         "0260 Register NameServer error: 0x%x\n",
                         mb->mbxStatus);
            /* decrement the node reference count held for this
             * callback function.
             */
            lpfc_nlp_put(ndlp);
            lpfc_mbuf_free(phba, mp->virt, mp->phys);
            kfree(mp);
            mempool_free(pmb, phba->mbox_mem_pool);

            /* If no other thread is using the ndlp, free it */
            lpfc_nlp_not_used(ndlp);

            if (phba->fc_topology == TOPOLOGY_LOOP) {
                  /*
                   * RegLogin failed, use loop map to make discovery
                   * list
                   */
                  lpfc_disc_list_loopmap(vport);

                  /* Start discovery */
                  lpfc_disc_start(vport);
                  return;
            }
            lpfc_vport_set_state(vport, FC_VPORT_FAILED);
            return;
      }

      pmb->context1 = NULL;

      ndlp->nlp_rpi = mb->un.varWords[0];
      ndlp->nlp_flag |= NLP_RPI_VALID;
      ndlp->nlp_type |= NLP_FABRIC;
      lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);

      if (vport->port_state < LPFC_VPORT_READY) {
            /* Link up discovery requires Fabric registration. */
            lpfc_ns_cmd(vport, SLI_CTNS_RFF_ID, 0, 0); /* Do this first! */
            lpfc_ns_cmd(vport, SLI_CTNS_RNN_ID, 0, 0);
            lpfc_ns_cmd(vport, SLI_CTNS_RSNN_NN, 0, 0);
            lpfc_ns_cmd(vport, SLI_CTNS_RSPN_ID, 0, 0);
            lpfc_ns_cmd(vport, SLI_CTNS_RFT_ID, 0, 0);

            /* Issue SCR just before NameServer GID_FT Query */
            lpfc_issue_els_scr(vport, SCR_DID, 0);
      }

      vport->fc_ns_retry = 0;
      /* Good status, issue CT Request to NameServer */
      if (lpfc_ns_cmd(vport, SLI_CTNS_GID_FT, 0, 0)) {
            /* Cannot issue NameServer Query, so finish up discovery */
            goto out;
      }

      /* decrement the node reference count held for this
       * callback function.
       */
      lpfc_nlp_put(ndlp);
      lpfc_mbuf_free(phba, mp->virt, mp->phys);
      kfree(mp);
      mempool_free(pmb, phba->mbox_mem_pool);

      return;
}

static void
lpfc_register_remote_port(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
{
      struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
      struct fc_rport  *rport;
      struct lpfc_rport_data *rdata;
      struct fc_rport_identifiers rport_ids;
      struct lpfc_hba  *phba = vport->phba;

      /* Remote port has reappeared. Re-register w/ FC transport */
      rport_ids.node_name = wwn_to_u64(ndlp->nlp_nodename.u.wwn);
      rport_ids.port_name = wwn_to_u64(ndlp->nlp_portname.u.wwn);
      rport_ids.port_id = ndlp->nlp_DID;
      rport_ids.roles = FC_RPORT_ROLE_UNKNOWN;

      /*
       * We leave our node pointer in rport->dd_data when we unregister a
       * FCP target port.  But fc_remote_port_add zeros the space to which
       * rport->dd_data points.  So, if we're reusing a previously
       * registered port, drop the reference that we took the last time we
       * registered the port.
       */
      if (ndlp->rport && ndlp->rport->dd_data &&
          ((struct lpfc_rport_data *) ndlp->rport->dd_data)->pnode == ndlp)
            lpfc_nlp_put(ndlp);

      lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
            "rport add:       did:x%x flg:x%x type x%x",
            ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);

      ndlp->rport = rport = fc_remote_port_add(shost, 0, &rport_ids);
      if (!rport || !get_device(&rport->dev)) {
            dev_printk(KERN_WARNING, &phba->pcidev->dev,
                     "Warning: fc_remote_port_add failed\n");
            return;
      }

      /* initialize static port data */
      rport->maxframe_size = ndlp->nlp_maxframe;
      rport->supported_classes = ndlp->nlp_class_sup;
      rdata = rport->dd_data;
      rdata->pnode = lpfc_nlp_get(ndlp);

      if (ndlp->nlp_type & NLP_FCP_TARGET)
            rport_ids.roles |= FC_RPORT_ROLE_FCP_TARGET;
      if (ndlp->nlp_type & NLP_FCP_INITIATOR)
            rport_ids.roles |= FC_RPORT_ROLE_FCP_INITIATOR;


      if (rport_ids.roles !=  FC_RPORT_ROLE_UNKNOWN)
            fc_remote_port_rolechg(rport, rport_ids.roles);

      if ((rport->scsi_target_id != -1) &&
          (rport->scsi_target_id < LPFC_MAX_TARGET)) {
            ndlp->nlp_sid = rport->scsi_target_id;
      }
      return;
}

static void
lpfc_unregister_remote_port(struct lpfc_nodelist *ndlp)
{
      struct fc_rport *rport = ndlp->rport;

      lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_RPORT,
            "rport delete:    did:x%x flg:x%x type x%x",
            ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);

      fc_remote_port_delete(rport);

      return;
}

static void
lpfc_nlp_counters(struct lpfc_vport *vport, int state, int count)
{
      struct Scsi_Host *shost = lpfc_shost_from_vport(vport);

      spin_lock_irq(shost->host_lock);
      switch (state) {
      case NLP_STE_UNUSED_NODE:
            vport->fc_unused_cnt += count;
            break;
      case NLP_STE_PLOGI_ISSUE:
            vport->fc_plogi_cnt += count;
            break;
      case NLP_STE_ADISC_ISSUE:
            vport->fc_adisc_cnt += count;
            break;
      case NLP_STE_REG_LOGIN_ISSUE:
            vport->fc_reglogin_cnt += count;
            break;
      case NLP_STE_PRLI_ISSUE:
            vport->fc_prli_cnt += count;
            break;
      case NLP_STE_UNMAPPED_NODE:
            vport->fc_unmap_cnt += count;
            break;
      case NLP_STE_MAPPED_NODE:
            vport->fc_map_cnt += count;
            break;
      case NLP_STE_NPR_NODE:
            vport->fc_npr_cnt += count;
            break;
      }
      spin_unlock_irq(shost->host_lock);
}

static void
lpfc_nlp_state_cleanup(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
                   int old_state, int new_state)
{
      struct Scsi_Host *shost = lpfc_shost_from_vport(vport);

      if (new_state == NLP_STE_UNMAPPED_NODE) {
            ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
            ndlp->nlp_flag &= ~NLP_NODEV_REMOVE;
            ndlp->nlp_type |= NLP_FC_NODE;
      }
      if (new_state == NLP_STE_MAPPED_NODE)
            ndlp->nlp_flag &= ~NLP_NODEV_REMOVE;
      if (new_state == NLP_STE_NPR_NODE)
            ndlp->nlp_flag &= ~NLP_RCV_PLOGI;

      /* Transport interface */
      if (ndlp->rport && (old_state == NLP_STE_MAPPED_NODE ||
                      old_state == NLP_STE_UNMAPPED_NODE)) {
            vport->phba->nport_event_cnt++;
            lpfc_unregister_remote_port(ndlp);
      }

      if (new_state ==  NLP_STE_MAPPED_NODE ||
          new_state == NLP_STE_UNMAPPED_NODE) {
            vport->phba->nport_event_cnt++;
            /*
             * Tell the fc transport about the port, if we haven't
             * already. If we have, and it's a scsi entity, be
             * sure to unblock any attached scsi devices
             */
            lpfc_register_remote_port(vport, ndlp);
      }
      if ((new_state ==  NLP_STE_MAPPED_NODE) &&
            (vport->stat_data_enabled)) {
            /*
             * A new target is discovered, if there is no buffer for
             * statistical data collection allocate buffer.
             */
            ndlp->lat_data = kcalloc(LPFC_MAX_BUCKET_COUNT,
                               sizeof(struct lpfc_scsicmd_bkt),
                               GFP_KERNEL);

            if (!ndlp->lat_data)
                  lpfc_printf_vlog(vport, KERN_ERR, LOG_NODE,
                        "0286 lpfc_nlp_state_cleanup failed to "
                        "allocate statistical data buffer DID "
                        "0x%x\n", ndlp->nlp_DID);
      }
      /*
       * if we added to Mapped list, but the remote port
       * registration failed or assigned a target id outside
       * our presentable range - move the node to the
       * Unmapped List
       */
      if (new_state == NLP_STE_MAPPED_NODE &&
          (!ndlp->rport ||
           ndlp->rport->scsi_target_id == -1 ||
           ndlp->rport->scsi_target_id >= LPFC_MAX_TARGET)) {
            spin_lock_irq(shost->host_lock);
            ndlp->nlp_flag |= NLP_TGT_NO_SCSIID;
            spin_unlock_irq(shost->host_lock);
            lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
      }
}

static char *
lpfc_nlp_state_name(char *buffer, size_t size, int state)
{
      static char *states[] = {
            [NLP_STE_UNUSED_NODE] = "UNUSED",
            [NLP_STE_PLOGI_ISSUE] = "PLOGI",
            [NLP_STE_ADISC_ISSUE] = "ADISC",
            [NLP_STE_REG_LOGIN_ISSUE] = "REGLOGIN",
            [NLP_STE_PRLI_ISSUE] = "PRLI",
            [NLP_STE_UNMAPPED_NODE] = "UNMAPPED",
            [NLP_STE_MAPPED_NODE] = "MAPPED",
            [NLP_STE_NPR_NODE] = "NPR",
      };

      if (state < NLP_STE_MAX_STATE && states[state])
            strlcpy(buffer, states[state], size);
      else
            snprintf(buffer, size, "unknown (%d)", state);
      return buffer;
}

void
lpfc_nlp_set_state(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
               int state)
{
      struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
      int  old_state = ndlp->nlp_state;
      char name1[16], name2[16];

      lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
                   "0904 NPort state transition x%06x, %s -> %s\n",
                   ndlp->nlp_DID,
                   lpfc_nlp_state_name(name1, sizeof(name1), old_state),
                   lpfc_nlp_state_name(name2, sizeof(name2), state));

      lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
            "node statechg    did:x%x old:%d ste:%d",
            ndlp->nlp_DID, old_state, state);

      if (old_state == NLP_STE_NPR_NODE &&
          state != NLP_STE_NPR_NODE)
            lpfc_cancel_retry_delay_tmo(vport, ndlp);
      if (old_state == NLP_STE_UNMAPPED_NODE) {
            ndlp->nlp_flag &= ~NLP_TGT_NO_SCSIID;
            ndlp->nlp_type &= ~NLP_FC_NODE;
      }

      if (list_empty(&ndlp->nlp_listp)) {
            spin_lock_irq(shost->host_lock);
            list_add_tail(&ndlp->nlp_listp, &vport->fc_nodes);
            spin_unlock_irq(shost->host_lock);
      } else if (old_state)
            lpfc_nlp_counters(vport, old_state, -1);

      ndlp->nlp_state = state;
      lpfc_nlp_counters(vport, state, 1);
      lpfc_nlp_state_cleanup(vport, ndlp, old_state, state);
}

void
lpfc_enqueue_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
{
      struct Scsi_Host *shost = lpfc_shost_from_vport(vport);

      if (list_empty(&ndlp->nlp_listp)) {
            spin_lock_irq(shost->host_lock);
            list_add_tail(&ndlp->nlp_listp, &vport->fc_nodes);
            spin_unlock_irq(shost->host_lock);
      }
}

void
lpfc_dequeue_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
{
      struct Scsi_Host *shost = lpfc_shost_from_vport(vport);

      lpfc_cancel_retry_delay_tmo(vport, ndlp);
      if (ndlp->nlp_state && !list_empty(&ndlp->nlp_listp))
            lpfc_nlp_counters(vport, ndlp->nlp_state, -1);
      spin_lock_irq(shost->host_lock);
      list_del_init(&ndlp->nlp_listp);
      spin_unlock_irq(shost->host_lock);
      lpfc_nlp_state_cleanup(vport, ndlp, ndlp->nlp_state,
                        NLP_STE_UNUSED_NODE);
}

static void
lpfc_disable_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
{
      lpfc_cancel_retry_delay_tmo(vport, ndlp);
      if (ndlp->nlp_state && !list_empty(&ndlp->nlp_listp))
            lpfc_nlp_counters(vport, ndlp->nlp_state, -1);
      lpfc_nlp_state_cleanup(vport, ndlp, ndlp->nlp_state,
                        NLP_STE_UNUSED_NODE);
}
/**
 * lpfc_initialize_node - Initialize all fields of node object
 * @vport: Pointer to Virtual Port object.
 * @ndlp: Pointer to FC node object.
 * @did: FC_ID of the node.
 *
 * This function is always called when node object need to be initialized.
 * It initializes all the fields of the node object. Although the reference
 * to phba from @ndlp can be obtained indirectly through it's reference to
 * @vport, a direct reference to phba is taken here by @ndlp. This is due
 * to the life-span of the @ndlp might go beyond the existence of @vport as
 * the final release of ndlp is determined by its reference count. And, the
 * operation on @ndlp needs the reference to phba.
 **/
static inline void
lpfc_initialize_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
      uint32_t did)
{
      INIT_LIST_HEAD(&ndlp->els_retry_evt.evt_listp);
      INIT_LIST_HEAD(&ndlp->dev_loss_evt.evt_listp);
      init_timer(&ndlp->nlp_delayfunc);
      ndlp->nlp_delayfunc.function = lpfc_els_retry_delay;
      ndlp->nlp_delayfunc.data = (unsigned long)ndlp;
      ndlp->nlp_DID = did;
      ndlp->vport = vport;
      ndlp->phba = vport->phba;
      ndlp->nlp_sid = NLP_NO_SID;
      kref_init(&ndlp->kref);
      NLP_INT_NODE_ACT(ndlp);
      atomic_set(&ndlp->cmd_pending, 0);
      ndlp->cmd_qdepth = LPFC_MAX_TGT_QDEPTH;
}

struct lpfc_nodelist *
lpfc_enable_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
             int state)
{
      struct lpfc_hba *phba = vport->phba;
      uint32_t did;
      unsigned long flags;

      if (!ndlp)
            return NULL;

      spin_lock_irqsave(&phba->ndlp_lock, flags);
      /* The ndlp should not be in memory free mode */
      if (NLP_CHK_FREE_REQ(ndlp)) {
            spin_unlock_irqrestore(&phba->ndlp_lock, flags);
            lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE,
                        "0277 lpfc_enable_node: ndlp:x%p "
                        "usgmap:x%x refcnt:%d\n",
                        (void *)ndlp, ndlp->nlp_usg_map,
                        atomic_read(&ndlp->kref.refcount));
            return NULL;
      }
      /* The ndlp should not already be in active mode */
      if (NLP_CHK_NODE_ACT(ndlp)) {
            spin_unlock_irqrestore(&phba->ndlp_lock, flags);
            lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE,
                        "0278 lpfc_enable_node: ndlp:x%p "
                        "usgmap:x%x refcnt:%d\n",
                        (void *)ndlp, ndlp->nlp_usg_map,
                        atomic_read(&ndlp->kref.refcount));
            return NULL;
      }

      /* Keep the original DID */
      did = ndlp->nlp_DID;

      /* re-initialize ndlp except of ndlp linked list pointer */
      memset((((char *)ndlp) + sizeof (struct list_head)), 0,
            sizeof (struct lpfc_nodelist) - sizeof (struct list_head));
      lpfc_initialize_node(vport, ndlp, did);

      spin_unlock_irqrestore(&phba->ndlp_lock, flags);

      if (state != NLP_STE_UNUSED_NODE)
            lpfc_nlp_set_state(vport, ndlp, state);

      lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
            "node enable:       did:x%x",
            ndlp->nlp_DID, 0, 0);
      return ndlp;
}

void
lpfc_drop_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
{
      /*
       * Use of lpfc_drop_node and UNUSED list: lpfc_drop_node should
       * be used if we wish to issue the "last" lpfc_nlp_put() to remove
       * the ndlp from the vport. The ndlp marked as UNUSED on the list
       * until ALL other outstanding threads have completed. We check
       * that the ndlp not already in the UNUSED state before we proceed.
       */
      if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
            return;
      lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNUSED_NODE);
      lpfc_nlp_put(ndlp);
      return;
}

/*
 * Start / ReStart rescue timer for Discovery / RSCN handling
 */
void
lpfc_set_disctmo(struct lpfc_vport *vport)
{
      struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
      struct lpfc_hba  *phba = vport->phba;
      uint32_t tmo;

      if (vport->port_state == LPFC_LOCAL_CFG_LINK) {
            /* For FAN, timeout should be greater than edtov */
            tmo = (((phba->fc_edtov + 999) / 1000) + 1);
      } else {
            /* Normal discovery timeout should be > than ELS/CT timeout
             * FC spec states we need 3 * ratov for CT requests
             */
            tmo = ((phba->fc_ratov * 3) + 3);
      }


      if (!timer_pending(&vport->fc_disctmo)) {
            lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
                  "set disc timer:  tmo:x%x state:x%x flg:x%x",
                  tmo, vport->port_state, vport->fc_flag);
      }

      mod_timer(&vport->fc_disctmo, jiffies + HZ * tmo);
      spin_lock_irq(shost->host_lock);
      vport->fc_flag |= FC_DISC_TMO;
      spin_unlock_irq(shost->host_lock);

      /* Start Discovery Timer state <hba_state> */
      lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
                   "0247 Start Discovery Timer state x%x "
                   "Data: x%x x%lx x%x x%x\n",
                   vport->port_state, tmo,
                   (unsigned long)&vport->fc_disctmo, vport->fc_plogi_cnt,
                   vport->fc_adisc_cnt);

      return;
}

/*
 * Cancel rescue timer for Discovery / RSCN handling
 */
int
lpfc_can_disctmo(struct lpfc_vport *vport)
{
      struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
      unsigned long iflags;

      lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
            "can disc timer:  state:x%x rtry:x%x flg:x%x",
            vport->port_state, vport->fc_ns_retry, vport->fc_flag);

      /* Turn off discovery timer if its running */
      if (vport->fc_flag & FC_DISC_TMO) {
            spin_lock_irqsave(shost->host_lock, iflags);
            vport->fc_flag &= ~FC_DISC_TMO;
            spin_unlock_irqrestore(shost->host_lock, iflags);
            del_timer_sync(&vport->fc_disctmo);
            spin_lock_irqsave(&vport->work_port_lock, iflags);
            vport->work_port_events &= ~WORKER_DISC_TMO;
            spin_unlock_irqrestore(&vport->work_port_lock, iflags);
      }

      /* Cancel Discovery Timer state <hba_state> */
      lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
                   "0248 Cancel Discovery Timer state x%x "
                   "Data: x%x x%x x%x\n",
                   vport->port_state, vport->fc_flag,
                   vport->fc_plogi_cnt, vport->fc_adisc_cnt);
      return 0;
}

/*
 * Check specified ring for outstanding IOCB on the SLI queue
 * Return true if iocb matches the specified nport
 */
int
lpfc_check_sli_ndlp(struct lpfc_hba *phba,
                struct lpfc_sli_ring *pring,
                struct lpfc_iocbq *iocb,
                struct lpfc_nodelist *ndlp)
{
      struct lpfc_sli *psli = &phba->sli;
      IOCB_t *icmd = &iocb->iocb;
      struct lpfc_vport    *vport = ndlp->vport;

      if (iocb->vport != vport)
            return 0;

      if (pring->ringno == LPFC_ELS_RING) {
            switch (icmd->ulpCommand) {
            case CMD_GEN_REQUEST64_CR:
                  if (iocb->context_un.ndlp == ndlp)
                        return 1;
            case CMD_ELS_REQUEST64_CR:
                  if (icmd->un.elsreq64.remoteID == ndlp->nlp_DID)
                        return 1;
            case CMD_XMIT_ELS_RSP64_CX:
                  if (iocb->context1 == (uint8_t *) ndlp)
                        return 1;
            }
      } else if (pring->ringno == psli->extra_ring) {

      } else if (pring->ringno == psli->fcp_ring) {
            /* Skip match check if waiting to relogin to FCP target */
            if ((ndlp->nlp_type & NLP_FCP_TARGET) &&
                (ndlp->nlp_flag & NLP_DELAY_TMO)) {
                  return 0;
            }
            if (icmd->ulpContext == (volatile ushort)ndlp->nlp_rpi) {
                  return 1;
            }
      } else if (pring->ringno == psli->next_ring) {

      }
      return 0;
}

/*
 * Free resources / clean up outstanding I/Os
 * associated with nlp_rpi in the LPFC_NODELIST entry.
 */
static int
lpfc_no_rpi(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
{
      LIST_HEAD(completions);
      struct lpfc_sli *psli;
      struct lpfc_sli_ring *pring;
      struct lpfc_iocbq *iocb, *next_iocb;
      uint32_t rpi, i;

      lpfc_fabric_abort_nport(ndlp);

      /*
       * Everything that matches on txcmplq will be returned
       * by firmware with a no rpi error.
       */
      psli = &phba->sli;
      rpi = ndlp->nlp_rpi;
      if (ndlp->nlp_flag & NLP_RPI_VALID) {
            /* Now process each ring */
            for (i = 0; i < psli->num_rings; i++) {
                  pring = &psli->ring[i];

                  spin_lock_irq(&phba->hbalock);
                  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))) {
                              /* It matches, so deque and call compl
                                 with an error */
                              list_move_tail(&iocb->list,
                                           &completions);
                              pring->txq_cnt--;
                        }
                  }
                  spin_unlock_irq(&phba->hbalock);
            }
      }

      /* Cancel all the IOCBs from the completions list */
      lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
                        IOERR_SLI_ABORTED);

      return 0;
}

/*
 * Free rpi associated with LPFC_NODELIST entry.
 * This routine is called from lpfc_freenode(), when we are removing
 * a LPFC_NODELIST entry. It is also called if the driver initiates a
 * LOGO that completes successfully, and we are waiting to PLOGI back
 * to the remote NPort. In addition, it is called after we receive
 * and unsolicated ELS cmd, send back a rsp, the rsp completes and
 * we are waiting to PLOGI back to the remote NPort.
 */
int
lpfc_unreg_rpi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
{
      struct lpfc_hba *phba = vport->phba;
      LPFC_MBOXQ_t    *mbox;
      int rc;

      if (ndlp->nlp_flag & NLP_RPI_VALID) {
            mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
            if (mbox) {
                  lpfc_unreg_login(phba, vport->vpi, ndlp->nlp_rpi, mbox);
                  mbox->vport = vport;
                  mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
                  rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
                  if (rc == MBX_NOT_FINISHED)
                        mempool_free(mbox, phba->mbox_mem_pool);
            }
            lpfc_no_rpi(phba, ndlp);
            ndlp->nlp_rpi = 0;
            ndlp->nlp_flag &= ~NLP_RPI_VALID;
            ndlp->nlp_flag &= ~NLP_NPR_ADISC;
            return 1;
      }
      return 0;
}

void
lpfc_unreg_all_rpis(struct lpfc_vport *vport)
{
      struct lpfc_hba  *phba  = vport->phba;
      LPFC_MBOXQ_t     *mbox;
      int rc;

      mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
      if (mbox) {
            lpfc_unreg_login(phba, vport->vpi, 0xffff, mbox);
            mbox->vport = vport;
            mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
            mbox->context1 = NULL;
            rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO);
            if (rc != MBX_TIMEOUT)
                  mempool_free(mbox, phba->mbox_mem_pool);

            if ((rc == MBX_TIMEOUT) || (rc == MBX_NOT_FINISHED))
                  lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX | LOG_VPORT,
                        "1836 Could not issue "
                        "unreg_login(all_rpis) status %d\n", rc);
      }
}

void
lpfc_unreg_default_rpis(struct lpfc_vport *vport)
{
      struct lpfc_hba  *phba  = vport->phba;
      LPFC_MBOXQ_t     *mbox;
      int rc;

      mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
      if (mbox) {
            lpfc_unreg_did(phba, vport->vpi, 0xffffffff, mbox);
            mbox->vport = vport;
            mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
            mbox->context1 = NULL;
            rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO);
            if (rc != MBX_TIMEOUT)
                  mempool_free(mbox, phba->mbox_mem_pool);

            if ((rc == MBX_TIMEOUT) || (rc == MBX_NOT_FINISHED))
                  lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX | LOG_VPORT,
                               "1815 Could not issue "
                               "unreg_did (default rpis) status %d\n",
                               rc);
      }
}

/*
 * Free resources associated with LPFC_NODELIST entry
 * so it can be freed.
 */
static int
lpfc_cleanup_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
{
      struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
      struct lpfc_hba  *phba = vport->phba;
      LPFC_MBOXQ_t *mb, *nextmb;
      struct lpfc_dmabuf *mp;

      /* Cleanup node for NPort <nlp_DID> */
      lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
                   "0900 Cleanup node for NPort x%x "
                   "Data: x%x x%x x%x\n",
                   ndlp->nlp_DID, ndlp->nlp_flag,
                   ndlp->nlp_state, ndlp->nlp_rpi);
      if (NLP_CHK_FREE_REQ(ndlp)) {
            lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE,
                        "0280 lpfc_cleanup_node: ndlp:x%p "
                        "usgmap:x%x refcnt:%d\n",
                        (void *)ndlp, ndlp->nlp_usg_map,
                        atomic_read(&ndlp->kref.refcount));
            lpfc_dequeue_node(vport, ndlp);
      } else {
            lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE,
                        "0281 lpfc_cleanup_node: ndlp:x%p "
                        "usgmap:x%x refcnt:%d\n",
                        (void *)ndlp, ndlp->nlp_usg_map,
                        atomic_read(&ndlp->kref.refcount));
            lpfc_disable_node(vport, ndlp);
      }

      /* cleanup any ndlp on mbox q waiting for reglogin cmpl */
      if ((mb = phba->sli.mbox_active)) {
            if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
               (ndlp == (struct lpfc_nodelist *) mb->context2)) {
                  mb->context2 = NULL;
                  mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
            }
      }

      spin_lock_irq(&phba->hbalock);
      list_for_each_entry_safe(mb, nextmb, &phba->sli.mboxq, list) {
            if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
                (ndlp == (struct lpfc_nodelist *) mb->context2)) {
                  mp = (struct lpfc_dmabuf *) (mb->context1);
                  if (mp) {
                        __lpfc_mbuf_free(phba, mp->virt, mp->phys);
                        kfree(mp);
                  }
                  list_del(&mb->list);
                  mempool_free(mb, phba->mbox_mem_pool);
                  /* We shall not invoke the lpfc_nlp_put to decrement
                   * the ndlp reference count as we are in the process
                   * of lpfc_nlp_release.
                   */
            }
      }
      spin_unlock_irq(&phba->hbalock);

      lpfc_els_abort(phba, ndlp);

      spin_lock_irq(shost->host_lock);
      ndlp->nlp_flag &= ~NLP_DELAY_TMO;
      spin_unlock_irq(shost->host_lock);

      ndlp->nlp_last_elscmd = 0;
      del_timer_sync(&ndlp->nlp_delayfunc);

      list_del_init(&ndlp->els_retry_evt.evt_listp);
      list_del_init(&ndlp->dev_loss_evt.evt_listp);

      lpfc_unreg_rpi(vport, ndlp);

      return 0;
}

/*
 * Check to see if we can free the nlp back to the freelist.
 * If we are in the middle of using the nlp in the discovery state
 * machine, defer the free till we reach the end of the state machine.
 */
static void
lpfc_nlp_remove(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
{
      struct lpfc_hba  *phba = vport->phba;
      struct lpfc_rport_data *rdata;
      LPFC_MBOXQ_t *mbox;
      int rc;

      lpfc_cancel_retry_delay_tmo(vport, ndlp);
      if ((ndlp->nlp_flag & NLP_DEFER_RM) &&
          !(ndlp->nlp_flag & NLP_RPI_VALID)) {
            /* For this case we need to cleanup the default rpi
             * allocated by the firmware.
             */
            if ((mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL))
                  != NULL) {
                  rc = lpfc_reg_rpi(phba, vport->vpi, ndlp->nlp_DID,
                      (uint8_t *) &vport->fc_sparam, mbox, 0);
                  if (rc) {
                        mempool_free(mbox, phba->mbox_mem_pool);
                  }
                  else {
                        mbox->mbox_flag |= LPFC_MBX_IMED_UNREG;
                        mbox->mbox_cmpl = lpfc_mbx_cmpl_dflt_rpi;
                        mbox->vport = vport;
                        mbox->context2 = NULL;
                        rc =lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
                        if (rc == MBX_NOT_FINISHED) {
                              mempool_free(mbox, phba->mbox_mem_pool);
                        }
                  }
            }
      }
      lpfc_cleanup_node(vport, ndlp);

      /*
       * We can get here with a non-NULL ndlp->rport because when we
       * unregister a rport we don't break the rport/node linkage.  So if we
       * do, make sure we don't leaving any dangling pointers behind.
       */
      if (ndlp->rport) {
            rdata = ndlp->rport->dd_data;
            rdata->pnode = NULL;
            ndlp->rport = NULL;
      }
}

static int
lpfc_matchdid(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
            uint32_t did)
{
      D_ID mydid, ndlpdid, matchdid;

      if (did == Bcast_DID)
            return 0;

      /* First check for Direct match */
      if (ndlp->nlp_DID == did)
            return 1;

      /* Next check for area/domain identically equals 0 match */
      mydid.un.word = vport->fc_myDID;
      if ((mydid.un.b.domain == 0) && (mydid.un.b.area == 0)) {
            return 0;
      }

      matchdid.un.word = did;
      ndlpdid.un.word = ndlp->nlp_DID;
      if (matchdid.un.b.id == ndlpdid.un.b.id) {
            if ((mydid.un.b.domain == matchdid.un.b.domain) &&
                (mydid.un.b.area == matchdid.un.b.area)) {
                  if ((ndlpdid.un.b.domain == 0) &&
                      (ndlpdid.un.b.area == 0)) {
                        if (ndlpdid.un.b.id)
                              return 1;
                  }
                  return 0;
            }

            matchdid.un.word = ndlp->nlp_DID;
            if ((mydid.un.b.domain == ndlpdid.un.b.domain) &&
                (mydid.un.b.area == ndlpdid.un.b.area)) {
                  if ((matchdid.un.b.domain == 0) &&
                      (matchdid.un.b.area == 0)) {
                        if (matchdid.un.b.id)
                              return 1;
                  }
            }
      }
      return 0;
}

/* Search for a nodelist entry */
static struct lpfc_nodelist *
__lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did)
{
      struct lpfc_nodelist *ndlp;
      uint32_t data1;

      list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
            if (lpfc_matchdid(vport, ndlp, did)) {
                  data1 = (((uint32_t) ndlp->nlp_state << 24) |
                         ((uint32_t) ndlp->nlp_xri << 16) |
                         ((uint32_t) ndlp->nlp_type << 8) |
                         ((uint32_t) ndlp->nlp_rpi & 0xff));
                  lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
                               "0929 FIND node DID "
                               "Data: x%p x%x x%x x%x\n",
                               ndlp, ndlp->nlp_DID,
                               ndlp->nlp_flag, data1);
                  return ndlp;
            }
      }

      /* FIND node did <did> NOT FOUND */
      lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
                   "0932 FIND node did x%x NOT FOUND.\n", did);
      return NULL;
}

struct lpfc_nodelist *
lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did)
{
      struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
      struct lpfc_nodelist *ndlp;

      spin_lock_irq(shost->host_lock);
      ndlp = __lpfc_findnode_did(vport, did);
      spin_unlock_irq(shost->host_lock);
      return ndlp;
}

struct lpfc_nodelist *
lpfc_setup_disc_node(struct lpfc_vport *vport, uint32_t did)
{
      struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
      struct lpfc_nodelist *ndlp;

      ndlp = lpfc_findnode_did(vport, did);
      if (!ndlp) {
            if ((vport->fc_flag & FC_RSCN_MODE) != 0 &&
                lpfc_rscn_payload_check(vport, did) == 0)
                  return NULL;
            ndlp = (struct lpfc_nodelist *)
                 mempool_alloc(vport->phba->nlp_mem_pool, GFP_KERNEL);
            if (!ndlp)
                  return NULL;
            lpfc_nlp_init(vport, ndlp, did);
            lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
            spin_lock_irq(shost->host_lock);
            ndlp->nlp_flag |= NLP_NPR_2B_DISC;
            spin_unlock_irq(shost->host_lock);
            return ndlp;
      } else if (!NLP_CHK_NODE_ACT(ndlp)) {
            ndlp = lpfc_enable_node(vport, ndlp, NLP_STE_NPR_NODE);
            if (!ndlp)
                  return NULL;
            spin_lock_irq(shost->host_lock);
            ndlp->nlp_flag |= NLP_NPR_2B_DISC;
            spin_unlock_irq(shost->host_lock);
            return ndlp;
      }

      if ((vport->fc_flag & FC_RSCN_MODE) &&
          !(vport->fc_flag & FC_NDISC_ACTIVE)) {
            if (lpfc_rscn_payload_check(vport, did)) {
                  /* If we've already recieved a PLOGI from this NPort
                   * we don't need to try to discover it again.
                   */
                  if (ndlp->nlp_flag & NLP_RCV_PLOGI)
                        return NULL;

                  /* Since this node is marked for discovery,
                   * delay timeout is not needed.
                   */
                  lpfc_cancel_retry_delay_tmo(vport, ndlp);
                  spin_lock_irq(shost->host_lock);
                  ndlp->nlp_flag |= NLP_NPR_2B_DISC;
                  spin_unlock_irq(shost->host_lock);
            } else
                  ndlp = NULL;
      } else {
            /* If we've already recieved a PLOGI from this NPort,
             * or we are already in the process of discovery on it,
             * we don't need to try to discover it again.
             */
            if (ndlp->nlp_state == NLP_STE_ADISC_ISSUE ||
                ndlp->nlp_state == NLP_STE_PLOGI_ISSUE ||
                ndlp->nlp_flag & NLP_RCV_PLOGI)
                  return NULL;
            lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
            spin_lock_irq(shost->host_lock);
            ndlp->nlp_flag |= NLP_NPR_2B_DISC;
            spin_unlock_irq(shost->host_lock);
      }
      return ndlp;
}

/* Build a list of nodes to discover based on the loopmap */
void
lpfc_disc_list_loopmap(struct lpfc_vport *vport)
{
      struct lpfc_hba  *phba = vport->phba;
      int j;
      uint32_t alpa, index;

      if (!lpfc_is_link_up(phba))
            return;

      if (phba->fc_topology != TOPOLOGY_LOOP)
            return;

      /* Check for loop map present or not */
      if (phba->alpa_map[0]) {
            for (j = 1; j <= phba->alpa_map[0]; j++) {
                  alpa = phba->alpa_map[j];
                  if (((vport->fc_myDID & 0xff) == alpa) || (alpa == 0))
                        continue;
                  lpfc_setup_disc_node(vport, alpa);
            }
      } else {
            /* No alpamap, so try all alpa's */
            for (j = 0; j < FC_MAXLOOP; j++) {
                  /* If cfg_scan_down is set, start from highest
                   * ALPA (0xef) to lowest (0x1).
                   */
                  if (vport->cfg_scan_down)
                        index = j;
                  else
                        index = FC_MAXLOOP - j - 1;
                  alpa = lpfcAlpaArray[index];
                  if ((vport->fc_myDID & 0xff) == alpa)
                        continue;
                  lpfc_setup_disc_node(vport, alpa);
            }
      }
      return;
}

void
lpfc_issue_clear_la(struct lpfc_hba *phba, struct lpfc_vport *vport)
{
      LPFC_MBOXQ_t *mbox;
      struct lpfc_sli *psli = &phba->sli;
      struct lpfc_sli_ring *extra_ring = &psli->ring[psli->extra_ring];
      struct lpfc_sli_ring *fcp_ring   = &psli->ring[psli->fcp_ring];
      struct lpfc_sli_ring *next_ring  = &psli->ring[psli->next_ring];
      int  rc;

      /*
       * if it's not a physical port or if we already send
       * clear_la then don't send it.
       */
      if ((phba->link_state >= LPFC_CLEAR_LA) ||
          (vport->port_type != LPFC_PHYSICAL_PORT) ||
            (phba->sli_rev == LPFC_SLI_REV4))
            return;

                  /* Link up discovery */
      if ((mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL)) != NULL) {
            phba->link_state = LPFC_CLEAR_LA;
            lpfc_clear_la(phba, mbox);
            mbox->mbox_cmpl = lpfc_mbx_cmpl_clear_la;
            mbox->vport = vport;
            rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
            if (rc == MBX_NOT_FINISHED) {
                  mempool_free(mbox, phba->mbox_mem_pool);
                  lpfc_disc_flush_list(vport);
                  extra_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
                  fcp_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
                  next_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
                  phba->link_state = LPFC_HBA_ERROR;
            }
      }
}

/* Reg_vpi to tell firmware to resume normal operations */
void
lpfc_issue_reg_vpi(struct lpfc_hba *phba, struct lpfc_vport *vport)
{
      LPFC_MBOXQ_t *regvpimbox;

      regvpimbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
      if (regvpimbox) {
            lpfc_reg_vpi(vport, regvpimbox);
            regvpimbox->mbox_cmpl = lpfc_mbx_cmpl_reg_vpi;
            regvpimbox->vport = vport;
            if (lpfc_sli_issue_mbox(phba, regvpimbox, MBX_NOWAIT)
                              == MBX_NOT_FINISHED) {
                  mempool_free(regvpimbox, phba->mbox_mem_pool);
            }
      }
}

/* Start Link up / RSCN discovery on NPR nodes */
void
lpfc_disc_start(struct lpfc_vport *vport)
{
      struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
      struct lpfc_hba  *phba = vport->phba;
      uint32_t num_sent;
      uint32_t clear_la_pending;
      int did_changed;

      if (!lpfc_is_link_up(phba))
            return;

      if (phba->link_state == LPFC_CLEAR_LA)
            clear_la_pending = 1;
      else
            clear_la_pending = 0;

      if (vport->port_state < LPFC_VPORT_READY)
            vport->port_state = LPFC_DISC_AUTH;

      lpfc_set_disctmo(vport);

      if (vport->fc_prevDID == vport->fc_myDID)
            did_changed = 0;
      else
            did_changed = 1;

      vport->fc_prevDID = vport->fc_myDID;
      vport->num_disc_nodes = 0;

      /* Start Discovery state <hba_state> */
      lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
                   "0202 Start Discovery hba state x%x "
                   "Data: x%x x%x x%x\n",
                   vport->port_state, vport->fc_flag, vport->fc_plogi_cnt,
                   vport->fc_adisc_cnt);

      /* First do ADISCs - if any */
      num_sent = lpfc_els_disc_adisc(vport);

      if (num_sent)
            return;

      /*
       * For SLI3, cmpl_reg_vpi will set port_state to READY, and
       * continue discovery.
       */
      if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
          !(vport->fc_flag & FC_PT2PT) &&
          !(vport->fc_flag & FC_RSCN_MODE) &&
          (phba->sli_rev < LPFC_SLI_REV4)) {
            lpfc_issue_reg_vpi(phba, vport);
            return;
      }

      /*
       * For SLI2, we need to set port_state to READY and continue
       * discovery.
       */
      if (vport->port_state < LPFC_VPORT_READY && !clear_la_pending) {
            /* If we get here, there is nothing to ADISC */
            if (vport->port_type == LPFC_PHYSICAL_PORT)
                  lpfc_issue_clear_la(phba, vport);

            if (!(vport->fc_flag & FC_ABORT_DISCOVERY)) {
                  vport->num_disc_nodes = 0;
                  /* go thru NPR nodes and issue ELS PLOGIs */
                  if (vport->fc_npr_cnt)
                        lpfc_els_disc_plogi(vport);

                  if (!vport->num_disc_nodes) {
                        spin_lock_irq(shost->host_lock);
                        vport->fc_flag &= ~FC_NDISC_ACTIVE;
                        spin_unlock_irq(shost->host_lock);
                        lpfc_can_disctmo(vport);
                  }
            }
            vport->port_state = LPFC_VPORT_READY;
      } else {
            /* Next do PLOGIs - if any */
            num_sent = lpfc_els_disc_plogi(vport);

            if (num_sent)
                  return;

            if (vport->fc_flag & FC_RSCN_MODE) {
                  /* Check to see if more RSCNs came in while we
                   * were processing this one.
                   */
                  if ((vport->fc_rscn_id_cnt == 0) &&
                      (!(vport->fc_flag & FC_RSCN_DISCOVERY))) {
                        spin_lock_irq(shost->host_lock);
                        vport->fc_flag &= ~FC_RSCN_MODE;
                        spin_unlock_irq(shost->host_lock);
                        lpfc_can_disctmo(vport);
                  } else
                        lpfc_els_handle_rscn(vport);
            }
      }
      return;
}

/*
 *  Ignore completion for all IOCBs on tx and txcmpl queue for ELS
 *  ring the match the sppecified nodelist.
 */
static void
lpfc_free_tx(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
{
      LIST_HEAD(completions);
      struct lpfc_sli *psli;
      IOCB_t     *icmd;
      struct lpfc_iocbq    *iocb, *next_iocb;
      struct lpfc_sli_ring *pring;

      psli = &phba->sli;
      pring = &psli->ring[LPFC_ELS_RING];

      /* Error matching iocb on txq or txcmplq
       * First check the txq.
       */
      spin_lock_irq(&phba->hbalock);
      list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
            if (iocb->context1 != ndlp) {
                  continue;
            }
            icmd = &iocb->iocb;
            if ((icmd->ulpCommand == CMD_ELS_REQUEST64_CR) ||
                (icmd->ulpCommand == CMD_XMIT_ELS_RSP64_CX)) {

                  list_move_tail(&iocb->list, &completions);
                  pring->txq_cnt--;
            }
      }

      /* Next check the txcmplq */
      list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) {
            if (iocb->context1 != ndlp) {
                  continue;
            }
            icmd = &iocb->iocb;
            if (icmd->ulpCommand == CMD_ELS_REQUEST64_CR ||
                icmd->ulpCommand == CMD_XMIT_ELS_RSP64_CX) {
                  lpfc_sli_issue_abort_iotag(phba, pring, iocb);
            }
      }
      spin_unlock_irq(&phba->hbalock);

      /* Cancel all the IOCBs from the completions list */
      lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
                        IOERR_SLI_ABORTED);
}

static void
lpfc_disc_flush_list(struct lpfc_vport *vport)
{
      struct lpfc_nodelist *ndlp, *next_ndlp;
      struct lpfc_hba *phba = vport->phba;

      if (vport->fc_plogi_cnt || vport->fc_adisc_cnt) {
            list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes,
                               nlp_listp) {
                  if (!NLP_CHK_NODE_ACT(ndlp))
                        continue;
                  if (ndlp->nlp_state == NLP_STE_PLOGI_ISSUE ||
                      ndlp->nlp_state == NLP_STE_ADISC_ISSUE) {
                        lpfc_free_tx(phba, ndlp);
                  }
            }
      }
}

void
lpfc_cleanup_discovery_resources(struct lpfc_vport *vport)
{
      lpfc_els_flush_rscn(vport);
      lpfc_els_flush_cmd(vport);
      lpfc_disc_flush_list(vport);
}

/*****************************************************************************/
/*
 * NAME:     lpfc_disc_timeout
 *
 * FUNCTION: Fibre Channel driver discovery timeout routine.
 *
 * EXECUTION ENVIRONMENT: interrupt only
 *
 * CALLED FROM:
 *      Timer function
 *
 * RETURNS:
 *      none
 */
/*****************************************************************************/
void
lpfc_disc_timeout(unsigned long ptr)
{
      struct lpfc_vport *vport = (struct lpfc_vport *) ptr;
      struct lpfc_hba   *phba = vport->phba;
      uint32_t tmo_posted;
      unsigned long flags = 0;

      if (unlikely(!phba))
            return;

      spin_lock_irqsave(&vport->work_port_lock, flags);
      tmo_posted = vport->work_port_events & WORKER_DISC_TMO;
      if (!tmo_posted)
            vport->work_port_events |= WORKER_DISC_TMO;
      spin_unlock_irqrestore(&vport->work_port_lock, flags);

      if (!tmo_posted)
            lpfc_worker_wake_up(phba);
      return;
}

static void
lpfc_disc_timeout_handler(struct lpfc_vport *vport)
{
      struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
      struct lpfc_hba  *phba = vport->phba;
      struct lpfc_sli  *psli = &phba->sli;
      struct lpfc_nodelist *ndlp, *next_ndlp;
      LPFC_MBOXQ_t *initlinkmbox;
      int rc, clrlaerr = 0;

      if (!(vport->fc_flag & FC_DISC_TMO))
            return;

      spin_lock_irq(shost->host_lock);
      vport->fc_flag &= ~FC_DISC_TMO;
      spin_unlock_irq(shost->host_lock);

      lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
            "disc timeout:    state:x%x rtry:x%x flg:x%x",
            vport->port_state, vport->fc_ns_retry, vport->fc_flag);

      switch (vport->port_state) {

      case LPFC_LOCAL_CFG_LINK:
      /* port_state is identically  LPFC_LOCAL_CFG_LINK while waiting for
       * FAN
       */
                        /* FAN timeout */
            lpfc_printf_vlog(vport, KERN_WARNING, LOG_DISCOVERY,
                         "0221 FAN timeout\n");
            /* Start discovery by sending FLOGI, clean up old rpis */
            list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes,
                               nlp_listp) {
                  if (!NLP_CHK_NODE_ACT(ndlp))
                        continue;
                  if (ndlp->nlp_state != NLP_STE_NPR_NODE)
                        continue;
                  if (ndlp->nlp_type & NLP_FABRIC) {
                        /* Clean up the ndlp on Fabric connections */
                        lpfc_drop_node(vport, ndlp);

                  } else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) {
                        /* Fail outstanding IO now since device
                         * is marked for PLOGI.
                         */
                        lpfc_unreg_rpi(vport, ndlp);
                  }
            }
            if (vport->port_state != LPFC_FLOGI) {
                  lpfc_initial_flogi(vport);
                  return;
            }
            break;

      case LPFC_FDISC:
      case LPFC_FLOGI:
      /* port_state is identically LPFC_FLOGI while waiting for FLOGI cmpl */
            /* Initial FLOGI timeout */
            lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
                         "0222 Initial %s timeout\n",
                         vport->vpi ? "FDISC" : "FLOGI");

            /* Assume no Fabric and go on with discovery.
             * Check for outstanding ELS FLOGI to abort.
             */

            /* FLOGI failed, so just use loop map to make discovery list */
            lpfc_disc_list_loopmap(vport);

            /* Start discovery */
            lpfc_disc_start(vport);
            break;

      case LPFC_FABRIC_CFG_LINK:
      /* hba_state is identically LPFC_FABRIC_CFG_LINK while waiting for
         NameServer login */
            lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
                         "0223 Timeout while waiting for "
                         "NameServer login\n");
            /* Next look for NameServer ndlp */
            ndlp = lpfc_findnode_did(vport, NameServer_DID);
            if (ndlp && NLP_CHK_NODE_ACT(ndlp))
                  lpfc_els_abort(phba, ndlp);

            /* ReStart discovery */
            goto restart_disc;

      case LPFC_NS_QRY:
      /* Check for wait for NameServer Rsp timeout */
            lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
                         "0224 NameServer Query timeout "
                         "Data: x%x x%x\n",
                         vport->fc_ns_retry, LPFC_MAX_NS_RETRY);

            if (vport->fc_ns_retry < LPFC_MAX_NS_RETRY) {
                  /* Try it one more time */
                  vport->fc_ns_retry++;
                  rc = lpfc_ns_cmd(vport, SLI_CTNS_GID_FT,
                               vport->fc_ns_retry, 0);
                  if (rc == 0)
                        break;
            }
            vport->fc_ns_retry = 0;

restart_disc:
            /*
             * Discovery is over.
             * set port_state to PORT_READY if SLI2.
             * cmpl_reg_vpi will set port_state to READY for SLI3.
             */
            if (phba->sli_rev < LPFC_SLI_REV4) {
                  if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
                        lpfc_issue_reg_vpi(phba, vport);
                  else  {     /* NPIV Not enabled */
                        lpfc_issue_clear_la(phba, vport);
                        vport->port_state = LPFC_VPORT_READY;
                  }
            }

            /* Setup and issue mailbox INITIALIZE LINK command */
            initlinkmbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
            if (!initlinkmbox) {
                  lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
                               "0206 Device Discovery "
                               "completion error\n");
                  phba->link_state = LPFC_HBA_ERROR;
                  break;
            }

            lpfc_linkdown(phba);
            lpfc_init_link(phba, initlinkmbox, phba->cfg_topology,
                         phba->cfg_link_speed);
            initlinkmbox->u.mb.un.varInitLnk.lipsr_AL_PA = 0;
            initlinkmbox->vport = vport;
            initlinkmbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
            rc = lpfc_sli_issue_mbox(phba, initlinkmbox, MBX_NOWAIT);
            lpfc_set_loopback_flag(phba);
            if (rc == MBX_NOT_FINISHED)
                  mempool_free(initlinkmbox, phba->mbox_mem_pool);

            break;

      case LPFC_DISC_AUTH:
      /* Node Authentication timeout */
            lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
                         "0227 Node Authentication timeout\n");
            lpfc_disc_flush_list(vport);

            /*
             * set port_state to PORT_READY if SLI2.
             * cmpl_reg_vpi will set port_state to READY for SLI3.
             */
            if (phba->sli_rev < LPFC_SLI_REV4) {
                  if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
                        lpfc_issue_reg_vpi(phba, vport);
                  else  {     /* NPIV Not enabled */
                        lpfc_issue_clear_la(phba, vport);
                        vport->port_state = LPFC_VPORT_READY;
                  }
            }
            break;

      case LPFC_VPORT_READY:
            if (vport->fc_flag & FC_RSCN_MODE) {
                  lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
                               "0231 RSCN timeout Data: x%x "
                               "x%x\n",
                               vport->fc_ns_retry, LPFC_MAX_NS_RETRY);

                  /* Cleanup any outstanding ELS commands */
                  lpfc_els_flush_cmd(vport);

                  lpfc_els_flush_rscn(vport);
                  lpfc_disc_flush_list(vport);
            }
            break;

      default:
            lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
                         "0273 Unexpected discovery timeout, "
                         "vport State x%x\n", vport->port_state);
            break;
      }

      switch (phba->link_state) {
      case LPFC_CLEAR_LA:
                        /* CLEAR LA timeout */
            lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
                         "0228 CLEAR LA timeout\n");
            clrlaerr = 1;
            break;

      case LPFC_LINK_UP:
            lpfc_issue_clear_la(phba, vport);
            /* Drop thru */
      case LPFC_LINK_UNKNOWN:
      case LPFC_WARM_START:
      case LPFC_INIT_START:
      case LPFC_INIT_MBX_CMDS:
      case LPFC_LINK_DOWN:
      case LPFC_HBA_ERROR:
            lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
                         "0230 Unexpected timeout, hba link "
                         "state x%x\n", phba->link_state);
            clrlaerr = 1;
            break;

      case LPFC_HBA_READY:
            break;
      }

      if (clrlaerr) {
            lpfc_disc_flush_list(vport);
            psli->ring[(psli->extra_ring)].flag &= ~LPFC_STOP_IOCB_EVENT;
            psli->ring[(psli->fcp_ring)].flag &= ~LPFC_STOP_IOCB_EVENT;
            psli->ring[(psli->next_ring)].flag &= ~LPFC_STOP_IOCB_EVENT;
            vport->port_state = LPFC_VPORT_READY;
      }

      return;
}

/*
 * This routine handles processing a NameServer REG_LOGIN mailbox
 * command upon completion. It is setup in the LPFC_MBOXQ
 * as the completion routine when the command is
 * handed off to the SLI layer.
 */
void
lpfc_mbx_cmpl_fdmi_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
{
      MAILBOX_t *mb = &pmb->u.mb;
      struct lpfc_dmabuf   *mp = (struct lpfc_dmabuf *) (pmb->context1);
      struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2;
      struct lpfc_vport    *vport = pmb->vport;

      pmb->context1 = NULL;

      ndlp->nlp_rpi = mb->un.varWords[0];
      ndlp->nlp_flag |= NLP_RPI_VALID;
      ndlp->nlp_type |= NLP_FABRIC;
      lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);

      /*
       * Start issuing Fabric-Device Management Interface (FDMI) command to
       * 0xfffffa (FDMI well known port) or Delay issuing FDMI command if
       * fdmi-on=2 (supporting RPA/hostnmae)
       */

      if (vport->cfg_fdmi_on == 1)
            lpfc_fdmi_cmd(vport, ndlp, SLI_MGMT_DHBA);
      else
            mod_timer(&vport->fc_fdmitmo, jiffies + HZ * 60);

      /* decrement the node reference count held for this callback
       * function.
       */
      lpfc_nlp_put(ndlp);
      lpfc_mbuf_free(phba, mp->virt, mp->phys);
      kfree(mp);
      mempool_free(pmb, phba->mbox_mem_pool);

      return;
}

static int
lpfc_filter_by_rpi(struct lpfc_nodelist *ndlp, void *param)
{
      uint16_t *rpi = param;

      return ndlp->nlp_rpi == *rpi;
}

static int
lpfc_filter_by_wwpn(struct lpfc_nodelist *ndlp, void *param)
{
      return memcmp(&ndlp->nlp_portname, param,
                  sizeof(ndlp->nlp_portname)) == 0;
}

static struct lpfc_nodelist *
__lpfc_find_node(struct lpfc_vport *vport, node_filter filter, void *param)
{
      struct lpfc_nodelist *ndlp;

      list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
            if (filter(ndlp, param))
                  return ndlp;
      }
      return NULL;
}

/*
 * This routine looks up the ndlp lists for the given RPI. If rpi found it
 * returns the node list element pointer else return NULL.
 */
struct lpfc_nodelist *
__lpfc_findnode_rpi(struct lpfc_vport *vport, uint16_t rpi)
{
      return __lpfc_find_node(vport, lpfc_filter_by_rpi, &rpi);
}

/*
 * This routine looks up the ndlp lists for the given WWPN. If WWPN found it
 * returns the node element list pointer else return NULL.
 */
struct lpfc_nodelist *
lpfc_findnode_wwpn(struct lpfc_vport *vport, struct lpfc_name *wwpn)
{
      struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
      struct lpfc_nodelist *ndlp;

      spin_lock_irq(shost->host_lock);
      ndlp = __lpfc_find_node(vport, lpfc_filter_by_wwpn, wwpn);
      spin_unlock_irq(shost->host_lock);
      return ndlp;
}

void
lpfc_nlp_init(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
            uint32_t did)
{
      memset(ndlp, 0, sizeof (struct lpfc_nodelist));

      lpfc_initialize_node(vport, ndlp, did);
      INIT_LIST_HEAD(&ndlp->nlp_listp);

      lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
            "node init:       did:x%x",
            ndlp->nlp_DID, 0, 0);

      return;
}

/* This routine releases all resources associated with a specifc NPort's ndlp
 * and mempool_free's the nodelist.
 */
static void
lpfc_nlp_release(struct kref *kref)
{
      struct lpfc_hba *phba;
      unsigned long flags;
      struct lpfc_nodelist *ndlp = container_of(kref, struct lpfc_nodelist,
                                      kref);

      lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
            "node release:    did:x%x flg:x%x type:x%x",
            ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);

      lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE,
                  "0279 lpfc_nlp_release: ndlp:x%p "
                  "usgmap:x%x refcnt:%d\n",
                  (void *)ndlp, ndlp->nlp_usg_map,
                  atomic_read(&ndlp->kref.refcount));

      /* remove ndlp from action. */
      lpfc_nlp_remove(ndlp->vport, ndlp);

      /* clear the ndlp active flag for all release cases */
      phba = ndlp->phba;
      spin_lock_irqsave(&phba->ndlp_lock, flags);
      NLP_CLR_NODE_ACT(ndlp);
      spin_unlock_irqrestore(&phba->ndlp_lock, flags);

      /* free ndlp memory for final ndlp release */
      if (NLP_CHK_FREE_REQ(ndlp)) {
            kfree(ndlp->lat_data);
            mempool_free(ndlp, ndlp->phba->nlp_mem_pool);
      }
}

/* This routine bumps the reference count for a ndlp structure to ensure
 * that one discovery thread won't free a ndlp while another discovery thread
 * is using it.
 */
struct lpfc_nodelist *
lpfc_nlp_get(struct lpfc_nodelist *ndlp)
{
      struct lpfc_hba *phba;
      unsigned long flags;

      if (ndlp) {
            lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
                  "node get:        did:x%x flg:x%x refcnt:x%x",
                  ndlp->nlp_DID, ndlp->nlp_flag,
                  atomic_read(&ndlp->kref.refcount));
            /* The check of ndlp usage to prevent incrementing the
             * ndlp reference count that is in the process of being
             * released.
             */
            phba = ndlp->phba;
            spin_lock_irqsave(&phba->ndlp_lock, flags);
            if (!NLP_CHK_NODE_ACT(ndlp) || NLP_CHK_FREE_ACK(ndlp)) {
                  spin_unlock_irqrestore(&phba->ndlp_lock, flags);
                  lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_NODE,
                        "0276 lpfc_nlp_get: ndlp:x%p "
                        "usgmap:x%x refcnt:%d\n",
                        (void *)ndlp, ndlp->nlp_usg_map,
                        atomic_read(&ndlp->kref.refcount));
                  return NULL;
            } else
                  kref_get(&ndlp->kref);
            spin_unlock_irqrestore(&phba->ndlp_lock, flags);
      }
      return ndlp;
}

/* This routine decrements the reference count for a ndlp structure. If the
 * count goes to 0, this indicates the the associated nodelist should be
 * freed. Returning 1 indicates the ndlp resource has been released; on the
 * other hand, returning 0 indicates the ndlp resource has not been released
 * yet.
 */
int
lpfc_nlp_put(struct lpfc_nodelist *ndlp)
{
      struct lpfc_hba *phba;
      unsigned long flags;

      if (!ndlp)
            return 1;

      lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
      "node put:        did:x%x flg:x%x refcnt:x%x",
            ndlp->nlp_DID, ndlp->nlp_flag,
            atomic_read(&ndlp->kref.refcount));
      phba = ndlp->phba;
      spin_lock_irqsave(&phba->ndlp_lock, flags);
      /* Check the ndlp memory free acknowledge flag to avoid the
       * possible race condition that kref_put got invoked again
       * after previous one has done ndlp memory free.
       */
      if (NLP_CHK_FREE_ACK(ndlp)) {
            spin_unlock_irqrestore(&phba->ndlp_lock, flags);
            lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_NODE,
                        "0274 lpfc_nlp_put: ndlp:x%p "
                        "usgmap:x%x refcnt:%d\n",
                        (void *)ndlp, ndlp->nlp_usg_map,
                        atomic_read(&ndlp->kref.refcount));
            return 1;
      }
      /* Check the ndlp inactivate log flag to avoid the possible
       * race condition that kref_put got invoked again after ndlp
       * is already in inactivating state.
       */
      if (NLP_CHK_IACT_REQ(ndlp)) {
            spin_unlock_irqrestore(&phba->ndlp_lock, flags);
            lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_NODE,
                        "0275 lpfc_nlp_put: ndlp:x%p "
                        "usgmap:x%x refcnt:%d\n",
                        (void *)ndlp, ndlp->nlp_usg_map,
                        atomic_read(&ndlp->kref.refcount));
            return 1;
      }
      /* For last put, mark the ndlp usage flags to make sure no
       * other kref_get and kref_put on the same ndlp shall get
       * in between the process when the final kref_put has been
       * invoked on this ndlp.
       */
      if (atomic_read(&ndlp->kref.refcount) == 1) {
            /* Indicate ndlp is put to inactive state. */
            NLP_SET_IACT_REQ(ndlp);
            /* Acknowledge ndlp memory free has been seen. */
            if (NLP_CHK_FREE_REQ(ndlp))
                  NLP_SET_FREE_ACK(ndlp);
      }
      spin_unlock_irqrestore(&phba->ndlp_lock, flags);
      /* Note, the kref_put returns 1 when decrementing a reference
       * count that was 1, it invokes the release callback function,
       * but it still left the reference count as 1 (not actually
       * performs the last decrementation). Otherwise, it actually
       * decrements the reference count and returns 0.
       */
      return kref_put(&ndlp->kref, lpfc_nlp_release);
}

/* This routine free's the specified nodelist if it is not in use
 * by any other discovery thread. This routine returns 1 if the
 * ndlp has been freed. A return value of 0 indicates the ndlp is
 * not yet been released.
 */
int
lpfc_nlp_not_used(struct lpfc_nodelist *ndlp)
{
      lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
            "node not used:   did:x%x flg:x%x refcnt:x%x",
            ndlp->nlp_DID, ndlp->nlp_flag,
            atomic_read(&ndlp->kref.refcount));
      if (atomic_read(&ndlp->kref.refcount) == 1)
            if (lpfc_nlp_put(ndlp))
                  return 1;
      return 0;
}

/**
 * lpfc_fcf_inuse - Check if FCF can be unregistered.
 * @phba: Pointer to hba context object.
 *
 * This function iterate through all FC nodes associated
 * will all vports to check if there is any node with
 * fc_rports associated with it. If there is an fc_rport
 * associated with the node, then the node is either in
 * discovered state or its devloss_timer is pending.
 */
static int
lpfc_fcf_inuse(struct lpfc_hba *phba)
{
      struct lpfc_vport **vports;
      int i, ret = 0;
      struct lpfc_nodelist *ndlp;
      struct Scsi_Host  *shost;

      vports = lpfc_create_vport_work_array(phba);

      for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
            shost = lpfc_shost_from_vport(vports[i]);
            spin_lock_irq(shost->host_lock);
            list_for_each_entry(ndlp, &vports[i]->fc_nodes, nlp_listp) {
                  if (NLP_CHK_NODE_ACT(ndlp) && ndlp->rport &&
                    (ndlp->rport->roles & FC_RPORT_ROLE_FCP_TARGET)) {
                        ret = 1;
                        spin_unlock_irq(shost->host_lock);
                        goto out;
                  }
            }
            spin_unlock_irq(shost->host_lock);
      }
out:
      lpfc_destroy_vport_work_array(phba, vports);
      return ret;
}

/**
 * lpfc_unregister_vfi_cmpl - Completion handler for unreg vfi.
 * @phba: Pointer to hba context object.
 * @mboxq: Pointer to mailbox object.
 *
 * This function frees memory associated with the mailbox command.
 */
static void
lpfc_unregister_vfi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
{
      struct lpfc_vport *vport = mboxq->vport;

      if (mboxq->u.mb.mbxStatus) {
            lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX,
                  "2555 UNREG_VFI mbxStatus error x%x "
                  "HBA state x%x\n",
                  mboxq->u.mb.mbxStatus, vport->port_state);
      }
      mempool_free(mboxq, phba->mbox_mem_pool);
      return;
}

/**
 * lpfc_unregister_fcfi_cmpl - Completion handler for unreg fcfi.
 * @phba: Pointer to hba context object.
 * @mboxq: Pointer to mailbox object.
 *
 * This function frees memory associated with the mailbox command.
 */
static void
lpfc_unregister_fcfi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
{
      struct lpfc_vport *vport = mboxq->vport;

      if (mboxq->u.mb.mbxStatus) {
            lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX,
                  "2550 UNREG_FCFI mbxStatus error x%x "
                  "HBA state x%x\n",
                  mboxq->u.mb.mbxStatus, vport->port_state);
      }
      mempool_free(mboxq, phba->mbox_mem_pool);
      return;
}

/**
 * lpfc_unregister_unused_fcf - Unregister FCF if all devices are disconnected.
 * @phba: Pointer to hba context object.
 *
 * This function check if there are any connected remote port for the FCF and
 * if all the devices are disconnected, this function unregister FCFI.
 * This function also tries to use another FCF for discovery.
 */
void
lpfc_unregister_unused_fcf(struct lpfc_hba *phba)
{
      LPFC_MBOXQ_t *mbox;
      int rc;
      struct lpfc_vport **vports;
      int i;

      spin_lock_irq(&phba->hbalock);
      /*
       * If HBA is not running in FIP mode or
       * If HBA does not support FCoE or
       * If FCF is not registered.
       * do nothing.
       */
      if (!(phba->hba_flag & HBA_FCOE_SUPPORT) ||
            !(phba->fcf.fcf_flag & FCF_REGISTERED) ||
            (phba->cfg_enable_fip == 0)) {
            spin_unlock_irq(&phba->hbalock);
            return;
      }
      spin_unlock_irq(&phba->hbalock);

      if (lpfc_fcf_inuse(phba))
            return;


      /* Unregister VPIs */
      vports = lpfc_create_vport_work_array(phba);
      if (vports &&
            (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED))
            for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
                  lpfc_mbx_unreg_vpi(vports[i]);
                  vports[i]->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
                  vports[i]->vfi_state &= ~LPFC_VFI_REGISTERED;
            }
      lpfc_destroy_vport_work_array(phba, vports);

      /* Unregister VFI */
      mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
      if (!mbox) {
            lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX,
                  "2556 UNREG_VFI mbox allocation failed"
                  "HBA state x%x\n",
                  phba->pport->port_state);
            return;
      }

      lpfc_unreg_vfi(mbox, phba->pport->vfi);
      mbox->vport = phba->pport;
      mbox->mbox_cmpl = lpfc_unregister_vfi_cmpl;

      rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
      if (rc == MBX_NOT_FINISHED) {
            lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX,
                  "2557 UNREG_VFI issue mbox failed rc x%x "
                  "HBA state x%x\n",
                  rc, phba->pport->port_state);
            mempool_free(mbox, phba->mbox_mem_pool);
            return;
      }

      /* Unregister FCF */
      mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
      if (!mbox) {
            lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX,
                  "2551 UNREG_FCFI mbox allocation failed"
                  "HBA state x%x\n",
                  phba->pport->port_state);
            return;
      }

      lpfc_unreg_fcfi(mbox, phba->fcf.fcfi);
      mbox->vport = phba->pport;
      mbox->mbox_cmpl = lpfc_unregister_fcfi_cmpl;
      rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);

      if (rc == MBX_NOT_FINISHED) {
            lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX,
                  "2552 UNREG_FCFI issue mbox failed rc x%x "
                  "HBA state x%x\n",
                  rc, phba->pport->port_state);
            mempool_free(mbox, phba->mbox_mem_pool);
            return;
      }

      spin_lock_irq(&phba->hbalock);
      phba->fcf.fcf_flag &= ~(FCF_AVAILABLE | FCF_REGISTERED |
            FCF_DISCOVERED | FCF_BOOT_ENABLE | FCF_IN_USE |
            FCF_VALID_VLAN);
      spin_unlock_irq(&phba->hbalock);

      /*
       * If driver is not unloading, check if there is any other
       * FCF record that can be used for discovery.
       */
      if ((phba->pport->load_flag & FC_UNLOADING) ||
            (phba->link_state < LPFC_LINK_UP))
            return;

      rc = lpfc_sli4_read_fcf_record(phba, LPFC_FCOE_FCF_GET_FIRST);

      if (rc)
            lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX,
                  "2553 lpfc_unregister_unused_fcf failed to read FCF"
                  " record HBA state x%x\n",
                  phba->pport->port_state);
}

/**
 * lpfc_read_fcf_conn_tbl - Create driver FCF connection table.
 * @phba: Pointer to hba context object.
 * @buff: Buffer containing the FCF connection table as in the config
 *         region.
 * This function create driver data structure for the FCF connection
 * record table read from config region 23.
 */
static void
lpfc_read_fcf_conn_tbl(struct lpfc_hba *phba,
      uint8_t *buff)
{
      struct lpfc_fcf_conn_entry *conn_entry, *next_conn_entry;
      struct lpfc_fcf_conn_hdr *conn_hdr;
      struct lpfc_fcf_conn_rec *conn_rec;
      uint32_t record_count;
      int i;

      /* Free the current connect table */
      list_for_each_entry_safe(conn_entry, next_conn_entry,
            &phba->fcf_conn_rec_list, list)
            kfree(conn_entry);

      conn_hdr = (struct lpfc_fcf_conn_hdr *) buff;
      record_count = conn_hdr->length * sizeof(uint32_t)/
            sizeof(struct lpfc_fcf_conn_rec);

      conn_rec = (struct lpfc_fcf_conn_rec *)
            (buff + sizeof(struct lpfc_fcf_conn_hdr));

      for (i = 0; i < record_count; i++) {
            if (!(conn_rec[i].flags & FCFCNCT_VALID))
                  continue;
            conn_entry = kzalloc(sizeof(struct lpfc_fcf_conn_entry),
                  GFP_KERNEL);
            if (!conn_entry) {
                  lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
                        "2566 Failed to allocate connection"
                        " table entry\n");
                  return;
            }

            memcpy(&conn_entry->conn_rec, &conn_rec[i],
                  sizeof(struct lpfc_fcf_conn_rec));
            conn_entry->conn_rec.vlan_tag =
                  le16_to_cpu(conn_entry->conn_rec.vlan_tag) & 0xFFF;
            conn_entry->conn_rec.flags =
                  le16_to_cpu(conn_entry->conn_rec.flags);
            list_add_tail(&conn_entry->list,
                  &phba->fcf_conn_rec_list);
      }
}

/**
 * lpfc_read_fcoe_param - Read FCoe parameters from conf region..
 * @phba: Pointer to hba context object.
 * @buff: Buffer containing the FCoE parameter data structure.
 *
 *  This function update driver data structure with config
 *  parameters read from config region 23.
 */
static void
lpfc_read_fcoe_param(struct lpfc_hba *phba,
                  uint8_t *buff)
{
      struct lpfc_fip_param_hdr *fcoe_param_hdr;
      struct lpfc_fcoe_params *fcoe_param;

      fcoe_param_hdr = (struct lpfc_fip_param_hdr *)
            buff;
      fcoe_param = (struct lpfc_fcoe_params *)
            buff + sizeof(struct lpfc_fip_param_hdr);

      if ((fcoe_param_hdr->parm_version != FIPP_VERSION) ||
            (fcoe_param_hdr->length != FCOE_PARAM_LENGTH))
            return;

      if (bf_get(lpfc_fip_param_hdr_fipp_mode, fcoe_param_hdr) ==
                  FIPP_MODE_ON)
            phba->cfg_enable_fip = 1;

      if (bf_get(lpfc_fip_param_hdr_fipp_mode, fcoe_param_hdr) ==
            FIPP_MODE_OFF)
            phba->cfg_enable_fip = 0;

      if (fcoe_param_hdr->parm_flags & FIPP_VLAN_VALID) {
            phba->valid_vlan = 1;
            phba->vlan_id = le16_to_cpu(fcoe_param->vlan_tag) &
                  0xFFF;
      }

      phba->fc_map[0] = fcoe_param->fc_map[0];
      phba->fc_map[1] = fcoe_param->fc_map[1];
      phba->fc_map[2] = fcoe_param->fc_map[2];
      return;
}

/**
 * lpfc_get_rec_conf23 - Get a record type in config region data.
 * @buff: Buffer containing config region 23 data.
 * @size: Size of the data buffer.
 * @rec_type: Record type to be searched.
 *
 * This function searches config region data to find the begining
 * of the record specified by record_type. If record found, this
 * function return pointer to the record else return NULL.
 */
static uint8_t *
lpfc_get_rec_conf23(uint8_t *buff, uint32_t size, uint8_t rec_type)
{
      uint32_t offset = 0, rec_length;

      if ((buff[0] == LPFC_REGION23_LAST_REC) ||
            (size < sizeof(uint32_t)))
            return NULL;

      rec_length = buff[offset + 1];

      /*
       * One TLV record has one word header and number of data words
       * specified in the rec_length field of the record header.
       */
      while ((offset + rec_length * sizeof(uint32_t) + sizeof(uint32_t))
            <= size) {
            if (buff[offset] == rec_type)
                  return &buff[offset];

            if (buff[offset] == LPFC_REGION23_LAST_REC)
                  return NULL;

            offset += rec_length * sizeof(uint32_t) + sizeof(uint32_t);
            rec_length = buff[offset + 1];
      }
      return NULL;
}

/**
 * lpfc_parse_fcoe_conf - Parse FCoE config data read from config region 23.
 * @phba: Pointer to lpfc_hba data structure.
 * @buff: Buffer containing config region 23 data.
 * @size: Size of the data buffer.
 *
 * This fuction parse the FCoE config parameters in config region 23 and
 * populate driver data structure with the parameters.
 */
void
lpfc_parse_fcoe_conf(struct lpfc_hba *phba,
            uint8_t *buff,
            uint32_t size)
{
      uint32_t offset = 0, rec_length;
      uint8_t *rec_ptr;

      /*
       * If data size is less than 2 words signature and version cannot be
       * verified.
       */
      if (size < 2*sizeof(uint32_t))
            return;

      /* Check the region signature first */
      if (memcmp(buff, LPFC_REGION23_SIGNATURE, 4)) {
            lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
                  "2567 Config region 23 has bad signature\n");
            return;
      }

      offset += 4;

      /* Check the data structure version */
      if (buff[offset] != LPFC_REGION23_VERSION) {
            lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
                  "2568 Config region 23 has bad version\n");
            return;
      }
      offset += 4;

      rec_length = buff[offset + 1];

      /* Read FCoE param record */
      rec_ptr = lpfc_get_rec_conf23(&buff[offset],
                  size - offset, FCOE_PARAM_TYPE);
      if (rec_ptr)
            lpfc_read_fcoe_param(phba, rec_ptr);

      /* Read FCF connection table */
      rec_ptr = lpfc_get_rec_conf23(&buff[offset],
            size - offset, FCOE_CONN_TBL_TYPE);
      if (rec_ptr)
            lpfc_read_fcf_conn_tbl(phba, rec_ptr);

}

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