kevin/linux
1
Fork 0
Code

scsi: target: Export fabric driver direct submit settings

Browse Source 
This exports the fabric driver's direct submit settings, so users know what
the driver supports. It will be helpful when they are exporting a device
through different targets and one doesn't support direct submission.

The new files allow the fabric to report what submission types they default
to and if they support direct submission:

default_submit_type:

 1 - TARGET_DIRECT_SUBMIT - If the user has not requested a specific value
     then the fabric requests direct submission.

 2 - TARGET_QUEUE_SUBMIT - If the user has not requested a specific value
     then the fabric requests queued submission.

Note that these fabric values are based on what the fabric driver currently
defaults to for compat with exiting setups.

direct_submit_supported:

 0 - The fabric does not support direct submission.

 1 - The fabric supports direct submission.

Signed-off-by: Mike Christie <michael.christie@oracle.com>
Link: https://lore.kernel.org/r/20230928020907.5730-8-michael.christie@oracle.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Mike Christie 2023-09-27 21:09:07 -05:00 committed by Martin K. Petersen
parent e344c00e7c
commit 6dbc829d10
1 changed files with 24 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

24
drivers/target/target_core_fabric_configfs.c
View File

@ -1065,8 +1065,32 @@ target_fabric_wwn_cmd_completion_affinity_store(struct config_item *item,
}
CONFIGFS_ATTR(target_fabric_wwn_, cmd_completion_affinity);
static ssize_t
target_fabric_wwn_default_submit_type_show(struct config_item *item,
char *page)
{
struct se_wwn *wwn = container_of(to_config_group(item), struct se_wwn,
param_group);
return sysfs_emit(page, "%u\n",
wwn->wwn_tf->tf_ops->default_submit_type);
}
CONFIGFS_ATTR_RO(target_fabric_wwn_, default_submit_type);
static ssize_t
target_fabric_wwn_direct_submit_supported_show(struct config_item *item,
char *page)
{
struct se_wwn *wwn = container_of(to_config_group(item), struct se_wwn,
param_group);
return sysfs_emit(page, "%u\n",
wwn->wwn_tf->tf_ops->direct_submit_supp);
}
CONFIGFS_ATTR_RO(target_fabric_wwn_, direct_submit_supported);
static struct configfs_attribute *target_fabric_wwn_param_attrs[] = {
&target_fabric_wwn_attr_cmd_completion_affinity,
&target_fabric_wwn_attr_default_submit_type,
&target_fabric_wwn_attr_direct_submit_supported,
NULL,
};