[SCSI] bfa: Fix FDISC timeout handling

Retry FDISC a max of 6 times. Introduce new events to handle vport
login fails due to max logins to fabric/switch.

Signed-off-by: Anil Gurumurthy <agurumur@brocade.com>
Signed-off-by: Vijaya Mohan Guvva <vmohan@brocade.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>

1 files changed, 17 insertions, 2 deletions

diff --git a/drivers/scsi/bfa/bfa_fcs_lport.c b/drivers/scsi/bfa/bfa_fcs_lport.c
index 8773d5e10d30..2f61a5af3658 100644
--- a/drivers/scsi/bfa/bfa_fcs_lport.c
+++ b/drivers/scsi/bfa/bfa_fcs_lport.c
@@ -5988,6 +5988,7 @@ enum bfa_fcs_vport_event {
         BFA_FCS_VPORT_SM_RSP_DUP_WWN = 12,      /*  Dup wnn error*/
         BFA_FCS_VPORT_SM_RSP_FAILED = 13,       /*  non-retryable failure */
         BFA_FCS_VPORT_SM_STOPCOMP = 14, /* vport delete completion */
+        BFA_FCS_VPORT_SM_FABRIC_MAX = 15, /* max vports on fabric */
 };
 
 static void     bfa_fcs_vport_sm_uninit(struct bfa_fcs_vport_s *vport,
@@ -6173,6 +6174,7 @@ bfa_fcs_vport_sm_fdisc(struct bfa_fcs_vport_s *vport,
                 break;
 
         case BFA_FCS_VPORT_SM_RSP_FAILED:
+        case BFA_FCS_VPORT_SM_FABRIC_MAX:
                 bfa_sm_set_state(vport, bfa_fcs_vport_sm_offline);
                 break;
 
@@ -6243,6 +6245,7 @@ bfa_fcs_vport_sm_fdisc_rsp_wait(struct bfa_fcs_vport_s *vport,
         case BFA_FCS_VPORT_SM_OFFLINE:
         case BFA_FCS_VPORT_SM_RSP_ERROR:
         case BFA_FCS_VPORT_SM_RSP_FAILED:
+        case BFA_FCS_VPORT_SM_FABRIC_MAX:
         case BFA_FCS_VPORT_SM_RSP_DUP_WWN:
                 bfa_sm_set_state(vport, bfa_fcs_vport_sm_cleanup);
                 bfa_sm_send_event(vport->lps, BFA_LPS_SM_OFFLINE);
@@ -6528,7 +6531,7 @@ bfa_fcs_vport_fdisc_rejected(struct bfa_fcs_vport_s *vport)
                 else {
                         bfa_fcs_vport_aen_post(&vport->lport,
                                         BFA_LPORT_AEN_NPIV_FABRIC_MAX);
-                        bfa_sm_send_event(vport, BFA_FCS_VPORT_SM_RSP_FAILED);
+                        bfa_sm_send_event(vport, BFA_FCS_VPORT_SM_FABRIC_MAX);
                 }
                 break;
 
@@ -6914,7 +6917,19 @@ bfa_cb_lps_fdisc_comp(void *bfad, void *uarg, bfa_status_t status)
                         break;
                 }
 
-                bfa_sm_send_event(vport, BFA_FCS_VPORT_SM_RSP_ERROR);
+                if (vport->fdisc_retries < BFA_FCS_VPORT_MAX_RETRIES)
+                        bfa_sm_send_event(vport, BFA_FCS_VPORT_SM_RSP_ERROR);
+                else
+                        bfa_sm_send_event(vport, BFA_FCS_VPORT_SM_RSP_FAILED);
+
+                break;
+
+        case BFA_STATUS_ETIMER:
+                vport->vport_stats.fdisc_timeouts++;
+                if (vport->fdisc_retries < BFA_FCS_VPORT_MAX_RETRIES)
+                        bfa_sm_send_event(vport, BFA_FCS_VPORT_SM_RSP_ERROR);
+                else
+                        bfa_sm_send_event(vport, BFA_FCS_VPORT_SM_RSP_FAILED);
                 break;
 
         case BFA_STATUS_FABRIC_RJT: