[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>

diff --git a/drivers/scsi/bfa/bfa_fcs_lport.c b/drivers/scsi/bfa/bfa_fcs_lport.c
index 8773d5e..2f61a5a 100644 (file)
--- 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: