[SCSI] fc class: add fc host default default dev loss setting

This patch adds a fc_host setting to store the
default dev_loss_tmo. It is used if the driver
has a callack to get the value from the LLD. If
the callback is not set, then we use the fc class
module default value.

Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>

1 files changed, 4 insertions, 0 deletions

diff --git a/include/scsi/scsi_transport_fc.h b/include/scsi/scsi_transport_fc.h
index 87d81b3ce564..9f98fca9b763 100644
--- a/include/scsi/scsi_transport_fc.h
+++ b/include/scsi/scsi_transport_fc.h
@@ -496,6 +496,7 @@ struct fc_host_attrs {
         u64 fabric_name;
         char symbolic_name[FC_SYMBOLIC_NAME_SIZE];
         char system_hostname[FC_SYMBOLIC_NAME_SIZE];
+        u32 def_dev_loss_tmo;
 
         /* Private (Transport-managed) Attributes */
         enum fc_tgtid_binding_type  tgtid_bind_type;
@@ -580,6 +581,8 @@ struct fc_host_attrs {
         (((struct fc_host_attrs *)(x)->shost_data)->devloss_work_q_name)
 #define fc_host_devloss_work_q(x) \
         (((struct fc_host_attrs *)(x)->shost_data)->devloss_work_q)
+#define fc_host_def_dev_loss_tmo(x) \
+        (((struct fc_host_attrs *)(x)->shost_data)->def_dev_loss_tmo)
 
 
 struct fc_bsg_buffer {
@@ -640,6 +643,7 @@ struct fc_function_template {
         void    (*get_host_fabric_name)(struct Scsi_Host *);
         void    (*get_host_symbolic_name)(struct Scsi_Host *);
         void    (*set_host_system_hostname)(struct Scsi_Host *);
+        void    (*get_host_def_dev_loss_tmo)(struct Scsi_Host *);
 
         struct fc_host_statistics * (*get_fc_host_stats)(struct Scsi_Host *);
         void    (*reset_fc_host_stats)(struct Scsi_Host *);