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

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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>
This commit is contained in:
Mike Christie 2010-08-06 03:02:37 -05:00 committed by James Bottomley
parent 2bfc96a127
commit b8ef3204f4
2 changed files with 9 additions and 1 deletions
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6
drivers/scsi/scsi_transport_fc.c
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@ -2525,7 +2525,11 @@ fc_rport_create(struct Scsi_Host *shost, int channel,
rport->maxframe_size = -1;
rport->supported_classes = FC_COS_UNSPECIFIED;
rport->dev_loss_tmo = fc_dev_loss_tmo;
if (fci->f->get_host_def_dev_loss_tmo) {
fci->f->get_host_def_dev_loss_tmo(shost);
rport->dev_loss_tmo = fc_host_def_dev_loss_tmo(shost);
} else
rport->dev_loss_tmo = fc_dev_loss_tmo;
memcpy(&rport->node_name, &ids->node_name, sizeof(rport->node_name));
memcpy(&rport->port_name, &ids->port_name, sizeof(rport->port_name));
rport->port_id = ids->port_id;

4
include/scsi/scsi_transport_fc.h
View file

@ -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 *);