From 6dbc829d101d9edb41081de01968792a009c9a78 Mon Sep 17 00:00:00 2001 From: Mike Christie Date: Wed, 27 Sep 2023 21:09:07 -0500 Subject: [PATCH] scsi: target: Export fabric driver direct submit settings 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 Link: https://lore.kernel.org/r/20230928020907.5730-8-michael.christie@oracle.com Signed-off-by: Martin K. Petersen --- drivers/target/target_core_fabric_configfs.c | 24 ++++++++++++++++++++ 1 file changed, 24 insertions(+) diff --git a/drivers/target/target_core_fabric_configfs.c b/drivers/target/target_core_fabric_configfs.c index b7c637644cd4..7156a4dc1ca7 100644 --- a/drivers/target/target_core_fabric_configfs.c +++ b/drivers/target/target_core_fabric_configfs.c @@ -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, };