[SCSI] libfc: when rport goes away (re-plogi), clean up exchanges to/from rport

When a rport goes away, libFC does a plogi which will reset exchanges
    at the rport. Clean exchanges at our end, both in transport and libFC.
    If transport hooks into exch_mgr_reset, it will call back into
    fc_exch_mgr_reset() to clean up libFC exchanges.

Signed-off-by: Abhijeet Joglekar <abjoglek@cisco.com>
Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>

1 files changed, 6 insertions, 1 deletions

diff --git a/drivers/scsi/libfc/fc_rport.c b/drivers/scsi/libfc/fc_rport.c
index dec7bae0e56d..717575934152 100644
--- a/drivers/scsi/libfc/fc_rport.c
+++ b/drivers/scsi/libfc/fc_rport.c
@@ -214,6 +214,7 @@ static void fc_rport_state_enter(struct fc_rport *rport,
 
 static void fc_rport_work(struct work_struct *work)
 {
+        u32 port_id;
         struct fc_rport_libfc_priv *rdata =
                 container_of(work, struct fc_rport_libfc_priv, event_work);
         enum fc_rport_event event;
@@ -279,8 +280,12 @@ static void fc_rport_work(struct work_struct *work)
                         rport_ops->event_callback(lport, rport, event);
                 if (trans_state == FC_PORTSTATE_ROGUE)
                         put_device(&rport->dev);
-                else
+                else {
+                        port_id = rport->port_id;
                         fc_remote_port_delete(rport);
+                        lport->tt.exch_mgr_reset(lport, 0, port_id);
+                        lport->tt.exch_mgr_reset(lport, port_id, 0);
+                }
         } else
                 mutex_unlock(&rdata->rp_mutex);
 }