[SCSI] libfc: fix indefinite rport restart

Remote ports were restarting indefinitely after getting
rejects in PRLI.

Fix by adding a counter of restarts and limiting that with
the port login retry limit as well.

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>

1 files changed, 2 insertions, 0 deletions

diff --git a/include/scsi/libfc.h b/include/scsi/libfc.h
index db54c4a2d14b..6d78df77dab6 100644
--- a/include/scsi/libfc.h
+++ b/include/scsi/libfc.h
@@ -189,6 +189,7 @@ struct fc_rport_libfc_priv {
  * @disc_id:        The discovery identifier
  * @maxframe_size:  The maximum frame size
  * @retries:        The retry count for the current state
+ * @major_retries:  The retry count for the entire PLOGI/PRLI state machine
  * @e_d_tov:        Error detect timeout value (in msec)
  * @r_a_tov:        Resource allocation timeout value (in msec)
  * @rp_mutex:       The mutex that protects the remote port
@@ -206,6 +207,7 @@ struct fc_rport_priv {
         u16                         disc_id;
         u16                         maxframe_size;
         unsigned int                retries;
+        unsigned int                major_retries;
         unsigned int                e_d_tov;
         unsigned int                r_a_tov;
         struct mutex                rp_mutex;