[SCSI] libfc fcoe: increase ELS and CT timeouts

The FC-LS spec. says ELS timeouts should be 2 x R_A_TOV.
The FC-GS spec. says CT timeouts should be 3 x R_A_TOV.

We've been using E_D_TOV for both of those.

Change for all ELS and CT requests except FLOGI, which we
leave at 2 seconds (using E_D_TOV).  One could argue that
R_A_TOV is locally determined until after FLOGI succeeds.

This does change FLOGI for vports which becomes FDISC.
This does not change the REC/SRR timeout which is 2 seconds.

Signed-off-by: Joe Eykholt <jeykholt@cisco.com>
Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>

3 files changed, 21 insertions, 11 deletions

diff --git a/drivers/scsi/libfc/fc_disc.c b/drivers/scsi/libfc/fc_disc.c
index 7b790ad15a93..9b0a5192a965 100644
--- a/drivers/scsi/libfc/fc_disc.c
+++ b/drivers/scsi/libfc/fc_disc.c
@@ -370,7 +370,7 @@ static void fc_disc_gpn_ft_req(struct fc_disc *disc)
         if (lport->tt.elsct_send(lport, 0, fp,
                                  FC_NS_GPN_FT,
                                  fc_disc_gpn_ft_resp,
-                                 disc, lport->e_d_tov))
+                                 disc, 3 * lport->r_a_tov))
                 return;
 err:
         fc_disc_error(disc, NULL);
@@ -654,7 +654,8 @@ static int fc_disc_gpn_id_req(struct fc_lport *lport,
         if (!fp)
                 return -ENOMEM;
         if (!lport->tt.elsct_send(lport, rdata->ids.port_id, fp, FC_NS_GPN_ID,
-                                  fc_disc_gpn_id_resp, rdata, lport->e_d_tov))
+                                  fc_disc_gpn_id_resp, rdata,
+                                  3 * lport->r_a_tov))
                 return -ENOMEM;
         kref_get(&rdata->kref);
         return 0;
diff --git a/drivers/scsi/libfc/fc_lport.c b/drivers/scsi/libfc/fc_lport.c
index 1bcc5e11d2c0..c841d547c298 100644
--- a/drivers/scsi/libfc/fc_lport.c
+++ b/drivers/scsi/libfc/fc_lport.c
@@ -1191,7 +1191,8 @@ static void fc_lport_enter_scr(struct fc_lport *lport)
         }
 
         if (!lport->tt.elsct_send(lport, FC_FID_FCTRL, fp, ELS_SCR,
-                                  fc_lport_scr_resp, lport, lport->e_d_tov))
+                                  fc_lport_scr_resp, lport,
+                                  2 * lport->r_a_tov))
                 fc_lport_error(lport, NULL);
 }
 
@@ -1257,7 +1258,7 @@ static void fc_lport_enter_ns(struct fc_lport *lport, enum fc_lport_state state)
 
         if (!lport->tt.elsct_send(lport, FC_FID_DIR_SERV, fp, cmd,
                                   fc_lport_ns_resp,
-                                  lport, lport->e_d_tov))
+                                  lport, 3 * lport->r_a_tov))
                 fc_lport_error(lport, fp);
 }
 
@@ -1414,7 +1415,8 @@ static void fc_lport_enter_logo(struct fc_lport *lport)
         }
 
         if (!lport->tt.elsct_send(lport, FC_FID_FLOGI, fp, ELS_LOGO,
-                                  fc_lport_logo_resp, lport, lport->e_d_tov))
+                                  fc_lport_logo_resp, lport,
+                                  2 * lport->r_a_tov))
                 fc_lport_error(lport, NULL);
 }
 
@@ -1534,7 +1536,9 @@ void fc_lport_enter_flogi(struct fc_lport *lport)
 
         if (!lport->tt.elsct_send(lport, FC_FID_FLOGI, fp,
                                   lport->vport ? ELS_FDISC : ELS_FLOGI,
-                                  fc_lport_flogi_resp, lport, lport->e_d_tov))
+                                  fc_lport_flogi_resp, lport,
+                                  lport->vport ? 2 * lport->r_a_tov :
+                                  lport->e_d_tov))
                 fc_lport_error(lport, NULL);
 }
 
diff --git a/drivers/scsi/libfc/fc_rport.c b/drivers/scsi/libfc/fc_rport.c
index 6578968a753d..91e2ba27f7bd 100644
--- a/drivers/scsi/libfc/fc_rport.c
+++ b/drivers/scsi/libfc/fc_rport.c
@@ -668,7 +668,8 @@ static void fc_rport_enter_plogi(struct fc_rport_priv *rdata)
         rdata->e_d_tov = lport->e_d_tov;
 
         if (!lport->tt.elsct_send(lport, rdata->ids.port_id, fp, ELS_PLOGI,
-                                  fc_rport_plogi_resp, rdata, lport->e_d_tov))
+                                  fc_rport_plogi_resp, rdata,
+                                  2 * lport->r_a_tov))
                 fc_rport_error_retry(rdata, NULL);
         else
                 kref_get(&rdata->kref);
@@ -829,7 +830,8 @@ static void fc_rport_enter_prli(struct fc_rport_priv *rdata)
         }
 
         if (!lport->tt.elsct_send(lport, rdata->ids.port_id, fp, ELS_PRLI,
-                                  fc_rport_prli_resp, rdata, lport->e_d_tov))
+                                  fc_rport_prli_resp, rdata,
+                                  2 * lport->r_a_tov))
                 fc_rport_error_retry(rdata, NULL);
         else
                 kref_get(&rdata->kref);
@@ -925,7 +927,8 @@ static void fc_rport_enter_rtv(struct fc_rport_priv *rdata)
         }
 
         if (!lport->tt.elsct_send(lport, rdata->ids.port_id, fp, ELS_RTV,
-                                  fc_rport_rtv_resp, rdata, lport->e_d_tov))
+                                  fc_rport_rtv_resp, rdata,
+                                  2 * lport->r_a_tov))
                 fc_rport_error_retry(rdata, NULL);
         else
                 kref_get(&rdata->kref);
@@ -955,7 +958,8 @@ static void fc_rport_enter_logo(struct fc_rport_priv *rdata)
         }
 
         if (!lport->tt.elsct_send(lport, rdata->ids.port_id, fp, ELS_LOGO,
-                                  fc_rport_logo_resp, rdata, lport->e_d_tov))
+                                  fc_rport_logo_resp, rdata,
+                                  2 * lport->r_a_tov))
                 fc_rport_error_retry(rdata, NULL);
         else
                 kref_get(&rdata->kref);
@@ -1042,7 +1046,8 @@ static void fc_rport_enter_adisc(struct fc_rport_priv *rdata)
                 return;
         }
         if (!lport->tt.elsct_send(lport, rdata->ids.port_id, fp, ELS_ADISC,
-                                  fc_rport_adisc_resp, rdata, lport->e_d_tov))
+                                  fc_rport_adisc_resp, rdata,
+                                  2 * lport->r_a_tov))
                 fc_rport_error_retry(rdata, NULL);
         else
                 kref_get(&rdata->kref);