1 files changed, 82 insertions, 9 deletions

diff --git a/drivers/scsi/lpfc/lpfc_els.c b/drivers/scsi/lpfc/lpfc_els.c
index a81d43306d17..d807f36ba4f9 100644
--- a/drivers/scsi/lpfc/lpfc_els.c
+++ b/drivers/scsi/lpfc/lpfc_els.c
@@ -771,6 +771,7 @@ lpfc_cmpl_els_flogi(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
         struct lpfc_nodelist *ndlp = cmdiocb->context1;
         struct lpfc_dmabuf *pcmd = cmdiocb->context2, *prsp;
         struct serv_parm *sp;
+        uint16_t fcf_index;
         int rc;
 
         /* Check to see if link went down during discovery */
@@ -788,6 +789,54 @@ lpfc_cmpl_els_flogi(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
                 vport->port_state);
 
         if (irsp->ulpStatus) {
+                /*
+                 * In case of FIP mode, perform round robin FCF failover
+                 * due to new FCF discovery
+                 */
+                if ((phba->hba_flag & HBA_FIP_SUPPORT) &&
+                    (phba->fcf.fcf_flag & FCF_DISCOVERY)) {
+                        lpfc_printf_log(phba, KERN_WARNING, LOG_FIP | LOG_ELS,
+                                        "2611 FLOGI failed on registered "
+                                        "FCF record fcf_index:%d, trying "
+                                        "to perform round robin failover\n",
+                                        phba->fcf.current_rec.fcf_indx);
+                        fcf_index = lpfc_sli4_fcf_rr_next_index_get(phba);
+                        if (fcf_index == LPFC_FCOE_FCF_NEXT_NONE) {
+                                /*
+                                 * Exhausted the eligible FCF record list,
+                                 * fail through to retry FLOGI on current
+                                 * FCF record.
+                                 */
+                                lpfc_printf_log(phba, KERN_WARNING,
+                                                LOG_FIP | LOG_ELS,
+                                                "2760 FLOGI exhausted FCF "
+                                                "round robin failover list, "
+                                                "retry FLOGI on the current "
+                                                "registered FCF index:%d\n",
+                                                phba->fcf.current_rec.fcf_indx);
+                                spin_lock_irq(&phba->hbalock);
+                                phba->fcf.fcf_flag &= ~FCF_DISCOVERY;
+                                spin_unlock_irq(&phba->hbalock);
+                        } else {
+                                rc = lpfc_sli4_fcf_rr_read_fcf_rec(phba,
+                                                                   fcf_index);
+                                if (rc) {
+                                        lpfc_printf_log(phba, KERN_WARNING,
+                                                        LOG_FIP | LOG_ELS,
+                                                        "2761 FLOGI round "
+                                                        "robin FCF failover "
+                                                        "read FCF failed "
+                                                        "rc:x%x, fcf_index:"
+                                                        "%d\n", rc,
+                                                phba->fcf.current_rec.fcf_indx);
+                                        spin_lock_irq(&phba->hbalock);
+                                        phba->fcf.fcf_flag &= ~FCF_DISCOVERY;
+                                        spin_unlock_irq(&phba->hbalock);
+                                } else
+                                        goto out;
+                        }
+                }
+
                 /* Check for retry */
                 if (lpfc_els_retry(phba, cmdiocb, rspiocb))
                         goto out;
@@ -841,8 +890,18 @@ lpfc_cmpl_els_flogi(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
                 else
                         rc = lpfc_cmpl_els_flogi_nport(vport, ndlp, sp);
 
-                if (!rc)
+                if (!rc) {
+                        /* Mark the FCF discovery process done */
+                        lpfc_printf_vlog(vport, KERN_INFO, LOG_FIP | LOG_ELS,
+                                         "2769 FLOGI successful on FCF record: "
+                                         "current_fcf_index:x%x, terminate FCF "
+                                         "round robin failover process\n",
+                                         phba->fcf.current_rec.fcf_indx);
+                        spin_lock_irq(&phba->hbalock);
+                        phba->fcf.fcf_flag &= ~FCF_DISCOVERY;
+                        spin_unlock_irq(&phba->hbalock);
                         goto out;
+                }
         }
 
 flogifail:
@@ -6075,21 +6134,18 @@ mbox_err_exit:
 }
 
 /**
- * lpfc_retry_pport_discovery - Start timer to retry FLOGI.
+ * lpfc_cancel_all_vport_retry_delay_timer - Cancel all vport retry delay timer
  * @phba: pointer to lpfc hba data structure.
  *
- * This routine abort all pending discovery commands and
- * start a timer to retry FLOGI for the physical port
- * discovery.
+ * This routine cancels the retry delay timers to all the vports.
  **/
 void
-lpfc_retry_pport_discovery(struct lpfc_hba *phba)
+lpfc_cancel_all_vport_retry_delay_timer(struct lpfc_hba *phba)
 {
         struct lpfc_vport **vports;
         struct lpfc_nodelist *ndlp;
-        struct Scsi_Host  *shost;
-        int i;
         uint32_t link_state;
+        int i;
 
         /* Treat this failure as linkdown for all vports */
         link_state = phba->link_state;
@@ -6107,13 +6163,30 @@ lpfc_retry_pport_discovery(struct lpfc_hba *phba)
                 }
                 lpfc_destroy_vport_work_array(phba, vports);
         }
+}
+
+/**
+ * lpfc_retry_pport_discovery - Start timer to retry FLOGI.
+ * @phba: pointer to lpfc hba data structure.
+ *
+ * This routine abort all pending discovery commands and
+ * start a timer to retry FLOGI for the physical port
+ * discovery.
+ **/
+void
+lpfc_retry_pport_discovery(struct lpfc_hba *phba)
+{
+        struct lpfc_nodelist *ndlp;
+        struct Scsi_Host  *shost;
+
+        /* Cancel the all vports retry delay retry timers */
+        lpfc_cancel_all_vport_retry_delay_timer(phba);
 
         /* If fabric require FLOGI, then re-instantiate physical login */
         ndlp = lpfc_findnode_did(phba->pport, Fabric_DID);
         if (!ndlp)
                 return;
 
-
         shost = lpfc_shost_from_vport(phba->pport);
         mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ);
         spin_lock_irq(shost->host_lock);