1 files changed, 350 insertions, 64 deletions

diff --git a/drivers/scsi/lpfc/lpfc_sli.c b/drivers/scsi/lpfc/lpfc_sli.c
index 35e3b96d4e07..049fb9a17b3f 100644
--- a/drivers/scsi/lpfc/lpfc_sli.c
+++ b/drivers/scsi/lpfc/lpfc_sli.c
@@ -23,6 +23,7 @@
 #include <linux/pci.h>
 #include <linux/interrupt.h>
 #include <linux/delay.h>
+#include <linux/slab.h>
 
 #include <scsi/scsi.h>
 #include <scsi/scsi_cmnd.h>
@@ -494,7 +495,7 @@ __lpfc_clear_active_sglq(struct lpfc_hba *phba, uint16_t xritag)
  *
  * Returns sglq ponter = success, NULL = Failure.
  **/
-static struct lpfc_sglq *
+struct lpfc_sglq *
 __lpfc_get_active_sglq(struct lpfc_hba *phba, uint16_t xritag)
 {
         uint16_t adj_xri;
@@ -526,6 +527,7 @@ __lpfc_sli_get_sglq(struct lpfc_hba *phba)
                 return NULL;
         adj_xri = sglq->sli4_xritag - phba->sli4_hba.max_cfg_param.xri_base;
         phba->sli4_hba.lpfc_sglq_active_list[adj_xri] = sglq;
+        sglq->state = SGL_ALLOCATED;
         return sglq;
 }
 
@@ -580,15 +582,18 @@ __lpfc_sli_release_iocbq_s4(struct lpfc_hba *phba, struct lpfc_iocbq *iocbq)
         else
                 sglq = __lpfc_clear_active_sglq(phba, iocbq->sli4_xritag);
         if (sglq)  {
-                if (iocbq->iocb_flag & LPFC_EXCHANGE_BUSY) {
+                if ((iocbq->iocb_flag & LPFC_EXCHANGE_BUSY) &&
+                        (sglq->state != SGL_XRI_ABORTED)) {
                         spin_lock_irqsave(&phba->sli4_hba.abts_sgl_list_lock,
                                         iflag);
                         list_add(&sglq->list,
                                 &phba->sli4_hba.lpfc_abts_els_sgl_list);
                         spin_unlock_irqrestore(
                                 &phba->sli4_hba.abts_sgl_list_lock, iflag);
-                } else
+                } else {
+                        sglq->state = SGL_FREED;
                         list_add(&sglq->list, &phba->sli4_hba.lpfc_sgl_list);
+                }
         }
 
 
@@ -2258,41 +2263,56 @@ lpfc_sli_process_sol_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
                                         spin_unlock_irqrestore(&phba->hbalock,
                                                                iflag);
                                 }
-                                if ((phba->sli_rev == LPFC_SLI_REV4) &&
-                                    (saveq->iocb_flag & LPFC_EXCHANGE_BUSY)) {
-                                        /* Set cmdiocb flag for the exchange
-                                         * busy so sgl (xri) will not be
-                                         * released until the abort xri is
-                                         * received from hba, clear the
-                                         * LPFC_DRIVER_ABORTED bit in case
-                                         * it was driver initiated abort.
-                                         */
-                                        spin_lock_irqsave(&phba->hbalock,
-                                                          iflag);
-                                        cmdiocbp->iocb_flag &=
-                                                ~LPFC_DRIVER_ABORTED;
-                                        cmdiocbp->iocb_flag |=
-                                                LPFC_EXCHANGE_BUSY;
-                                        spin_unlock_irqrestore(&phba->hbalock,
-                                                               iflag);
-                                        cmdiocbp->iocb.ulpStatus =
-                                                IOSTAT_LOCAL_REJECT;
-                                        cmdiocbp->iocb.un.ulpWord[4] =
-                                                IOERR_ABORT_REQUESTED;
-                                        /*
-                                         * For SLI4, irsiocb contains NO_XRI
-                                         * in sli_xritag, it shall not affect
-                                         * releasing sgl (xri) process.
-                                         */
-                                        saveq->iocb.ulpStatus =
-                                                IOSTAT_LOCAL_REJECT;
-                                        saveq->iocb.un.ulpWord[4] =
-                                                IOERR_SLI_ABORTED;
-                                        spin_lock_irqsave(&phba->hbalock,
-                                                          iflag);
-                                        saveq->iocb_flag |= LPFC_DELAY_MEM_FREE;
-                                        spin_unlock_irqrestore(&phba->hbalock,
-                                                               iflag);
+                                if (phba->sli_rev == LPFC_SLI_REV4) {
+                                        if (saveq->iocb_flag &
+                                            LPFC_EXCHANGE_BUSY) {
+                                                /* Set cmdiocb flag for the
+                                                 * exchange busy so sgl (xri)
+                                                 * will not be released until
+                                                 * the abort xri is received
+                                                 * from hba.
+                                                 */
+                                                spin_lock_irqsave(
+                                                        &phba->hbalock, iflag);
+                                                cmdiocbp->iocb_flag |=
+                                                        LPFC_EXCHANGE_BUSY;
+                                                spin_unlock_irqrestore(
+                                                        &phba->hbalock, iflag);
+                                        }
+                                        if (cmdiocbp->iocb_flag &
+                                            LPFC_DRIVER_ABORTED) {
+                                                /*
+                                                 * Clear LPFC_DRIVER_ABORTED
+                                                 * bit in case it was driver
+                                                 * initiated abort.
+                                                 */
+                                                spin_lock_irqsave(
+                                                        &phba->hbalock, iflag);
+                                                cmdiocbp->iocb_flag &=
+                                                        ~LPFC_DRIVER_ABORTED;
+                                                spin_unlock_irqrestore(
+                                                        &phba->hbalock, iflag);
+                                                cmdiocbp->iocb.ulpStatus =
+                                                        IOSTAT_LOCAL_REJECT;
+                                                cmdiocbp->iocb.un.ulpWord[4] =
+                                                        IOERR_ABORT_REQUESTED;
+                                                /*
+                                                 * For SLI4, irsiocb contains
+                                                 * NO_XRI in sli_xritag, it
+                                                 * shall not affect releasing
+                                                 * sgl (xri) process.
+                                                 */
+                                                saveq->iocb.ulpStatus =
+                                                        IOSTAT_LOCAL_REJECT;
+                                                saveq->iocb.un.ulpWord[4] =
+                                                        IOERR_SLI_ABORTED;
+                                                spin_lock_irqsave(
+                                                        &phba->hbalock, iflag);
+                                                saveq->iocb_flag |=
+                                                        LPFC_DELAY_MEM_FREE;
+                                                spin_unlock_irqrestore(
+                                                        &phba->hbalock, iflag);
+                                        }
                                 }
                         }
                         (cmdiocbp->iocb_cmpl) (phba, cmdiocbp, saveq);
@@ -2515,14 +2535,16 @@ lpfc_sli_handle_fast_ring_event(struct lpfc_hba *phba,
 
                         cmdiocbq = lpfc_sli_iocbq_lookup(phba, pring,
                                                          &rspiocbq);
-                        if ((cmdiocbq) && (cmdiocbq->iocb_cmpl)) {
-                                        spin_unlock_irqrestore(&phba->hbalock,
-                                                               iflag);
-                                        (cmdiocbq->iocb_cmpl)(phba, cmdiocbq,
-                                                              &rspiocbq);
-                                        spin_lock_irqsave(&phba->hbalock,
-                                                          iflag);
-                                }
+                        if (unlikely(!cmdiocbq))
+                                break;
+                        if (cmdiocbq->iocb_flag & LPFC_DRIVER_ABORTED)
+                                cmdiocbq->iocb_flag &= ~LPFC_DRIVER_ABORTED;
+                        if (cmdiocbq->iocb_cmpl) {
+                                spin_unlock_irqrestore(&phba->hbalock, iflag);
+                                (cmdiocbq->iocb_cmpl)(phba, cmdiocbq,
+                                                      &rspiocbq);
+                                spin_lock_irqsave(&phba->hbalock, iflag);
+                        }
                         break;
                 case LPFC_UNSOL_IOCB:
                         spin_unlock_irqrestore(&phba->hbalock, iflag);
@@ -3091,6 +3113,12 @@ lpfc_sli_brdready_s3(struct lpfc_hba *phba, uint32_t mask)
 
         /* Check to see if any errors occurred during init */
         if ((status & HS_FFERM) || (i >= 20)) {
+                lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
+                                "2751 Adapter failed to restart, "
+                                "status reg x%x, FW Data: A8 x%x AC x%x\n",
+                                status,
+                                readl(phba->MBslimaddr + 0xa8),
+                                readl(phba->MBslimaddr + 0xac));
                 phba->link_state = LPFC_HBA_ERROR;
                 retval = 1;
         }
@@ -3278,6 +3306,9 @@ lpfc_sli_brdkill(struct lpfc_hba *phba)
         if (retval != MBX_SUCCESS) {
                 if (retval != MBX_BUSY)
                         mempool_free(pmb, phba->mbox_mem_pool);
+                lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
+                                "2752 KILL_BOARD command failed retval %d\n",
+                                retval);
                 spin_lock_irq(&phba->hbalock);
                 phba->link_flag &= ~LS_IGNORE_ERATT;
                 spin_unlock_irq(&phba->hbalock);
@@ -4035,7 +4066,7 @@ lpfc_sli_hba_setup(struct lpfc_hba *phba)
 
 lpfc_sli_hba_setup_error:
         phba->link_state = LPFC_HBA_ERROR;
-        lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
+        lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
                         "0445 Firmware initialization failed\n");
         return rc;
 }
@@ -4388,7 +4419,13 @@ lpfc_sli4_hba_setup(struct lpfc_hba *phba)
         spin_unlock_irq(&phba->hbalock);
 
         /* Read the port's service parameters. */
-        lpfc_read_sparam(phba, mboxq, vport->vpi);
+        rc = lpfc_read_sparam(phba, mboxq, vport->vpi);
+        if (rc) {
+                phba->link_state = LPFC_HBA_ERROR;
+                rc = -ENOMEM;
+                goto out_free_vpd;
+        }
+
         mboxq->vport = vport;
         rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
         mp = (struct lpfc_dmabuf *) mboxq->context1;
@@ -4483,6 +4520,10 @@ lpfc_sli4_hba_setup(struct lpfc_hba *phba)
         /* Post receive buffers to the device */
         lpfc_sli4_rb_setup(phba);
 
+        /* Reset HBA FCF states after HBA reset */
+        phba->fcf.fcf_flag = 0;
+        phba->fcf.current_rec.flag = 0;
+
         /* Start the ELS watchdog timer */
         mod_timer(&vport->els_tmofunc,
                   jiffies + HZ * (phba->fc_ratov * 2));
@@ -7436,6 +7477,7 @@ lpfc_sli_wake_iocb_wait(struct lpfc_hba *phba,
 {
         wait_queue_head_t *pdone_q;
         unsigned long iflags;
+        struct lpfc_scsi_buf *lpfc_cmd;
 
         spin_lock_irqsave(&phba->hbalock, iflags);
         cmdiocbq->iocb_flag |= LPFC_IO_WAKE;
@@ -7443,6 +7485,14 @@ lpfc_sli_wake_iocb_wait(struct lpfc_hba *phba,
                 memcpy(&((struct lpfc_iocbq *)cmdiocbq->context2)->iocb,
                        &rspiocbq->iocb, sizeof(IOCB_t));
 
+        /* Set the exchange busy flag for task management commands */
+        if ((cmdiocbq->iocb_flag & LPFC_IO_FCP) &&
+                !(cmdiocbq->iocb_flag & LPFC_IO_LIBDFC)) {
+                lpfc_cmd = container_of(cmdiocbq, struct lpfc_scsi_buf,
+                        cur_iocbq);
+                lpfc_cmd->exch_busy = rspiocbq->iocb_flag & LPFC_EXCHANGE_BUSY;
+        }
+
         pdone_q = cmdiocbq->context_un.wait_queue;
         if (pdone_q)
                 wake_up(pdone_q);
@@ -9061,6 +9111,12 @@ lpfc_sli4_fp_handle_fcp_wcqe(struct lpfc_hba *phba,
         /* Fake the irspiocb and copy necessary response information */
         lpfc_sli4_iocb_param_transfer(phba, &irspiocbq, cmdiocbq, wcqe);
 
+        if (cmdiocbq->iocb_flag & LPFC_DRIVER_ABORTED) {
+                spin_lock_irqsave(&phba->hbalock, iflags);
+                cmdiocbq->iocb_flag &= ~LPFC_DRIVER_ABORTED;
+                spin_unlock_irqrestore(&phba->hbalock, iflags);
+        }
+
         /* Pass the cmd_iocb and the rsp state to the upper layer */
         (cmdiocbq->iocb_cmpl)(phba, cmdiocbq, &irspiocbq);
 }
@@ -11941,15 +11997,19 @@ lpfc_sli4_build_dflt_fcf_record(struct lpfc_hba *phba,
 }
 
 /**
- * lpfc_sli4_read_fcf_record - Read the driver's default FCF Record.
+ * lpfc_sli4_fcf_scan_read_fcf_rec - Read hba fcf record for fcf scan.
  * @phba: pointer to lpfc hba data structure.
  * @fcf_index: FCF table entry offset.
  *
- * This routine is invoked to read up to @fcf_num of FCF record from the
- * device starting with the given @fcf_index.
+ * This routine is invoked to scan the entire FCF table by reading FCF
+ * record and processing it one at a time starting from the @fcf_index
+ * for initial FCF discovery or fast FCF failover rediscovery.
+ *
+ * Return 0 if the mailbox command is submitted sucessfully, none 0
+ * otherwise.
  **/
 int
-lpfc_sli4_read_fcf_record(struct lpfc_hba *phba, uint16_t fcf_index)
+lpfc_sli4_fcf_scan_read_fcf_rec(struct lpfc_hba *phba, uint16_t fcf_index)
 {
         int rc = 0, error;
         LPFC_MBOXQ_t *mboxq;
@@ -11961,17 +12021,17 @@ lpfc_sli4_read_fcf_record(struct lpfc_hba *phba, uint16_t fcf_index)
                                 "2000 Failed to allocate mbox for "
                                 "READ_FCF cmd\n");
                 error = -ENOMEM;
-                goto fail_fcfscan;
+                goto fail_fcf_scan;
         }
         /* Construct the read FCF record mailbox command */
-        rc = lpfc_sli4_mbx_read_fcf_record(phba, mboxq, fcf_index);
+        rc = lpfc_sli4_mbx_read_fcf_rec(phba, mboxq, fcf_index);
         if (rc) {
                 error = -EINVAL;
-                goto fail_fcfscan;
+                goto fail_fcf_scan;
         }
         /* Issue the mailbox command asynchronously */
         mboxq->vport = phba->pport;
-        mboxq->mbox_cmpl = lpfc_mbx_cmpl_read_fcf_record;
+        mboxq->mbox_cmpl = lpfc_mbx_cmpl_fcf_scan_read_fcf_rec;
         rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_NOWAIT);
         if (rc == MBX_NOT_FINISHED)
                 error = -EIO;
@@ -11979,9 +12039,13 @@ lpfc_sli4_read_fcf_record(struct lpfc_hba *phba, uint16_t fcf_index)
                 spin_lock_irq(&phba->hbalock);
                 phba->hba_flag |= FCF_DISC_INPROGRESS;
                 spin_unlock_irq(&phba->hbalock);
+                /* Reset FCF round robin index bmask for new scan */
+                if (fcf_index == LPFC_FCOE_FCF_GET_FIRST)
+                        memset(phba->fcf.fcf_rr_bmask, 0,
+                               sizeof(*phba->fcf.fcf_rr_bmask));
                 error = 0;
         }
-fail_fcfscan:
+fail_fcf_scan:
         if (error) {
                 if (mboxq)
                         lpfc_sli4_mbox_cmd_free(phba, mboxq);
@@ -11994,6 +12058,181 @@ fail_fcfscan:
 }
 
 /**
+ * lpfc_sli4_fcf_rr_read_fcf_rec - Read hba fcf record for round robin fcf.
+ * @phba: pointer to lpfc hba data structure.
+ * @fcf_index: FCF table entry offset.
+ *
+ * This routine is invoked to read an FCF record indicated by @fcf_index
+ * and to use it for FLOGI round robin FCF failover.
+ *
+ * Return 0 if the mailbox command is submitted sucessfully, none 0
+ * otherwise.
+ **/
+int
+lpfc_sli4_fcf_rr_read_fcf_rec(struct lpfc_hba *phba, uint16_t fcf_index)
+{
+        int rc = 0, error;
+        LPFC_MBOXQ_t *mboxq;
+
+        mboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
+        if (!mboxq) {
+                lpfc_printf_log(phba, KERN_ERR, LOG_FIP | LOG_INIT,
+                                "2763 Failed to allocate mbox for "
+                                "READ_FCF cmd\n");
+                error = -ENOMEM;
+                goto fail_fcf_read;
+        }
+        /* Construct the read FCF record mailbox command */
+        rc = lpfc_sli4_mbx_read_fcf_rec(phba, mboxq, fcf_index);
+        if (rc) {
+                error = -EINVAL;
+                goto fail_fcf_read;
+        }
+        /* Issue the mailbox command asynchronously */
+        mboxq->vport = phba->pport;
+        mboxq->mbox_cmpl = lpfc_mbx_cmpl_fcf_rr_read_fcf_rec;
+        rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_NOWAIT);
+        if (rc == MBX_NOT_FINISHED)
+                error = -EIO;
+        else
+                error = 0;
+
+fail_fcf_read:
+        if (error && mboxq)
+                lpfc_sli4_mbox_cmd_free(phba, mboxq);
+        return error;
+}
+
+/**
+ * lpfc_sli4_read_fcf_rec - Read hba fcf record for update eligible fcf bmask.
+ * @phba: pointer to lpfc hba data structure.
+ * @fcf_index: FCF table entry offset.
+ *
+ * This routine is invoked to read an FCF record indicated by @fcf_index to
+ * determine whether it's eligible for FLOGI round robin failover list.
+ *
+ * Return 0 if the mailbox command is submitted sucessfully, none 0
+ * otherwise.
+ **/
+int
+lpfc_sli4_read_fcf_rec(struct lpfc_hba *phba, uint16_t fcf_index)
+{
+        int rc = 0, error;
+        LPFC_MBOXQ_t *mboxq;
+
+        mboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
+        if (!mboxq) {
+                lpfc_printf_log(phba, KERN_ERR, LOG_FIP | LOG_INIT,
+                                "2758 Failed to allocate mbox for "
+                                "READ_FCF cmd\n");
+                                error = -ENOMEM;
+                                goto fail_fcf_read;
+        }
+        /* Construct the read FCF record mailbox command */
+        rc = lpfc_sli4_mbx_read_fcf_rec(phba, mboxq, fcf_index);
+        if (rc) {
+                error = -EINVAL;
+                goto fail_fcf_read;
+        }
+        /* Issue the mailbox command asynchronously */
+        mboxq->vport = phba->pport;
+        mboxq->mbox_cmpl = lpfc_mbx_cmpl_read_fcf_rec;
+        rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_NOWAIT);
+        if (rc == MBX_NOT_FINISHED)
+                error = -EIO;
+        else
+                error = 0;
+
+fail_fcf_read:
+        if (error && mboxq)
+                lpfc_sli4_mbox_cmd_free(phba, mboxq);
+        return error;
+}
+
+/**
+ * lpfc_sli4_fcf_rr_next_index_get - Get next eligible fcf record index
+ * @phba: pointer to lpfc hba data structure.
+ *
+ * This routine is to get the next eligible FCF record index in a round
+ * robin fashion. If the next eligible FCF record index equals to the
+ * initial round robin FCF record index, LPFC_FCOE_FCF_NEXT_NONE (0xFFFF)
+ * shall be returned, otherwise, the next eligible FCF record's index
+ * shall be returned.
+ **/
+uint16_t
+lpfc_sli4_fcf_rr_next_index_get(struct lpfc_hba *phba)
+{
+        uint16_t next_fcf_index;
+
+        /* Search from the currently registered FCF index */
+        next_fcf_index = find_next_bit(phba->fcf.fcf_rr_bmask,
+                                       LPFC_SLI4_FCF_TBL_INDX_MAX,
+                                       phba->fcf.current_rec.fcf_indx);
+        /* Wrap around condition on phba->fcf.fcf_rr_bmask */
+        if (next_fcf_index >= LPFC_SLI4_FCF_TBL_INDX_MAX)
+                next_fcf_index = find_next_bit(phba->fcf.fcf_rr_bmask,
+                                               LPFC_SLI4_FCF_TBL_INDX_MAX, 0);
+        /* Round robin failover stop condition */
+        if (next_fcf_index == phba->fcf.fcf_rr_init_indx)
+                return LPFC_FCOE_FCF_NEXT_NONE;
+
+        return next_fcf_index;
+}
+
+/**
+ * lpfc_sli4_fcf_rr_index_set - Set bmask with eligible fcf record index
+ * @phba: pointer to lpfc hba data structure.
+ *
+ * This routine sets the FCF record index in to the eligible bmask for
+ * round robin failover search. It checks to make sure that the index
+ * does not go beyond the range of the driver allocated bmask dimension
+ * before setting the bit.
+ *
+ * Returns 0 if the index bit successfully set, otherwise, it returns
+ * -EINVAL.
+ **/
+int
+lpfc_sli4_fcf_rr_index_set(struct lpfc_hba *phba, uint16_t fcf_index)
+{
+        if (fcf_index >= LPFC_SLI4_FCF_TBL_INDX_MAX) {
+                lpfc_printf_log(phba, KERN_ERR, LOG_FIP,
+                                "2610 HBA FCF index reached driver's "
+                                "book keeping dimension: fcf_index:%d, "
+                                "driver_bmask_max:%d\n",
+                                fcf_index, LPFC_SLI4_FCF_TBL_INDX_MAX);
+                return -EINVAL;
+        }
+        /* Set the eligible FCF record index bmask */
+        set_bit(fcf_index, phba->fcf.fcf_rr_bmask);
+
+        return 0;
+}
+
+/**
+ * lpfc_sli4_fcf_rr_index_set - Clear bmask from eligible fcf record index
+ * @phba: pointer to lpfc hba data structure.
+ *
+ * This routine clears the FCF record index from the eligible bmask for
+ * round robin failover search. It checks to make sure that the index
+ * does not go beyond the range of the driver allocated bmask dimension
+ * before clearing the bit.
+ **/
+void
+lpfc_sli4_fcf_rr_index_clear(struct lpfc_hba *phba, uint16_t fcf_index)
+{
+        if (fcf_index >= LPFC_SLI4_FCF_TBL_INDX_MAX) {
+                lpfc_printf_log(phba, KERN_ERR, LOG_FIP,
+                                "2762 HBA FCF index goes beyond driver's "
+                                "book keeping dimension: fcf_index:%d, "
+                                "driver_bmask_max:%d\n",
+                                fcf_index, LPFC_SLI4_FCF_TBL_INDX_MAX);
+                return;
+        }
+        /* Clear the eligible FCF record index bmask */
+        clear_bit(fcf_index, phba->fcf.fcf_rr_bmask);
+}
+
+/**
  * lpfc_mbx_cmpl_redisc_fcf_table - completion routine for rediscover FCF table
  * @phba: pointer to lpfc hba data structure.
  *
@@ -12014,21 +12253,40 @@ lpfc_mbx_cmpl_redisc_fcf_table(struct lpfc_hba *phba, LPFC_MBOXQ_t *mbox)
         shdr_add_status = bf_get(lpfc_mbox_hdr_add_status,
                              &redisc_fcf->header.cfg_shdr.response);
         if (shdr_status || shdr_add_status) {
-                lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
+                lpfc_printf_log(phba, KERN_ERR, LOG_FIP,
                                 "2746 Requesting for FCF rediscovery failed "
                                 "status x%x add_status x%x\n",
                                 shdr_status, shdr_add_status);
-                /*
-                 * Request failed, last resort to re-try current
-                 * registered FCF entry
-                 */
-                lpfc_retry_pport_discovery(phba);
-        } else
+                if (phba->fcf.fcf_flag & FCF_ACVL_DISC) {
+                        spin_lock_irq(&phba->hbalock);
+                        phba->fcf.fcf_flag &= ~FCF_ACVL_DISC;
+                        spin_unlock_irq(&phba->hbalock);
+                        /*
+                         * CVL event triggered FCF rediscover request failed,
+                         * last resort to re-try current registered FCF entry.
+                         */
+                        lpfc_retry_pport_discovery(phba);
+                } else {
+                        spin_lock_irq(&phba->hbalock);
+                        phba->fcf.fcf_flag &= ~FCF_DEAD_DISC;
+                        spin_unlock_irq(&phba->hbalock);
+                        /*
+                         * DEAD FCF event triggered FCF rediscover request
+                         * failed, last resort to fail over as a link down
+                         * to FCF registration.
+                         */
+                        lpfc_sli4_fcf_dead_failthrough(phba);
+                }
+        } else {
+                lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
+                                "2775 Start FCF rediscovery quiescent period "
+                                "wait timer before scaning FCF table\n");
                 /*
                  * Start FCF rediscovery wait timer for pending FCF
                  * before rescan FCF record table.
                  */
                 lpfc_fcf_redisc_wait_start_timer(phba);
+        }
 
         mempool_free(mbox, phba->mbox_mem_pool);
 }
@@ -12047,6 +12305,9 @@ lpfc_sli4_redisc_fcf_table(struct lpfc_hba *phba)
         struct lpfc_mbx_redisc_fcf_tbl *redisc_fcf;
         int rc, length;
 
+        /* Cancel retry delay timers to all vports before FCF rediscover */
+        lpfc_cancel_all_vport_retry_delay_timer(phba);
+
         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
         if (!mbox) {
                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
@@ -12078,6 +12339,31 @@ lpfc_sli4_redisc_fcf_table(struct lpfc_hba *phba)
 }
 
 /**
+ * lpfc_sli4_fcf_dead_failthrough - Failthrough routine to fcf dead event
+ * @phba: pointer to lpfc hba data structure.
+ *
+ * This function is the failover routine as a last resort to the FCF DEAD
+ * event when driver failed to perform fast FCF failover.
+ **/
+void
+lpfc_sli4_fcf_dead_failthrough(struct lpfc_hba *phba)
+{
+        uint32_t link_state;
+
+        /*
+         * Last resort as FCF DEAD event failover will treat this as
+         * a link down, but save the link state because we don't want
+         * it to be changed to Link Down unless it is already down.
+         */
+        link_state = phba->link_state;
+        lpfc_linkdown(phba);
+        phba->link_state = link_state;
+
+        /* Unregister FCF if no devices connected to it */
+        lpfc_unregister_unused_fcf(phba);
+}
+
+/**
  * lpfc_sli_read_link_ste - Read region 23 to decide if link is disabled.
  * @phba: pointer to lpfc hba data structure.
  *