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[SCSI] fc class: add fc host dev loss sysfs file

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This adds a fc host dev loss sysfs file. Instead of
calling into the driver using the get_host_def_dev_loss_tmo
callback, we allow drivers to init the dev loss like is done
for other fc host params, and then the fc class will handle
updating the value if the user writes to the new sysfs file.

Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
This commit is contained in:
Mike Christie
2010-09-15 16:52:32 -05:00
committed by James Bottomley
parent 0af5d708aa
commit 43ca910a9c
2 changed files with 91 additions and 40 deletions
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7
include/scsi/scsi_transport_fc.h
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@@ -496,7 +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;
u32 dev_loss_tmo;
/* Private (Transport-managed) Attributes */
enum fc_tgtid_binding_type tgtid_bind_type;
@@ -581,8 +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)
#define fc_host_dev_loss_tmo(x) \
(((struct fc_host_attrs *)(x)->shost_data)->dev_loss_tmo)
struct fc_bsg_buffer {
@@ -643,7 +643,6 @@ 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 *);