[SCSI] zfcp: make use of fc_remote_port_delete when target port is unavailable

If zfcp's port erp fails we now call fc_remote_port_delete. This helps
to avoid offlined scsi devices if scsi commands time out due to path
failures. When an adapter erp fails we call fc_remote_port_delete for
all ports on that adapter.

Signed-off-by: Andreas Herrmann <aherrman@de.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

1 files changed, 7 insertions, 0 deletions

diff --git a/drivers/s390/scsi/zfcp_scsi.c b/drivers/s390/scsi/zfcp_scsi.c
index 30e87197f5f8..46e14f22ec18 100644
--- a/drivers/s390/scsi/zfcp_scsi.c
+++ b/drivers/s390/scsi/zfcp_scsi.c
@@ -800,12 +800,18 @@ zfcp_reset_fc_host_stats(struct Scsi_Host *shost)
         }
 }
 
+static void zfcp_set_rport_dev_loss_tmo(struct fc_rport *rport, u32 timeout)
+{
+        rport->dev_loss_tmo = timeout;
+}
+
 struct fc_function_template zfcp_transport_functions = {
         .show_starget_port_id = 1,
         .show_starget_port_name = 1,
         .show_starget_node_name = 1,
         .show_rport_supported_classes = 1,
         .show_rport_maxframe_size = 1,
+        .show_rport_dev_loss_tmo = 1,
         .show_host_node_name = 1,
         .show_host_port_name = 1,
         .show_host_permanent_port_name = 1,
@@ -815,6 +821,7 @@ struct fc_function_template zfcp_transport_functions = {
         .show_host_serial_number = 1,
         .get_fc_host_stats = zfcp_get_fc_host_stats,
         .reset_fc_host_stats = zfcp_reset_fc_host_stats,
+        .set_rport_dev_loss_tmo = zfcp_set_rport_dev_loss_tmo,
         /* no functions registered for following dynamic attributes but
            directly set by LLDD */
         .show_host_port_type = 1,