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-rw-r--r--drivers/target/iscsi/iscsi_target_configfs.c24
-rw-r--r--drivers/target/target_core_tpg.c23
-rw-r--r--include/target/target_core_base.h2
-rw-r--r--include/target/target_core_fabric.h2
4 files changed, 51 insertions, 0 deletions
diff --git a/drivers/target/iscsi/iscsi_target_configfs.c b/drivers/target/iscsi/iscsi_target_configfs.c
index 542641c504a..5201d5ef970 100644
--- a/drivers/target/iscsi/iscsi_target_configfs.c
+++ b/drivers/target/iscsi/iscsi_target_configfs.c
@@ -754,9 +754,33 @@ static ssize_t lio_target_nacl_store_cmdsn_depth(
TF_NACL_BASE_ATTR(lio_target, cmdsn_depth, S_IRUGO | S_IWUSR);
+static ssize_t lio_target_nacl_show_tag(
+ struct se_node_acl *se_nacl,
+ char *page)
+{
+ return snprintf(page, PAGE_SIZE, "%s", se_nacl->acl_tag);
+}
+
+static ssize_t lio_target_nacl_store_tag(
+ struct se_node_acl *se_nacl,
+ const char *page,
+ size_t count)
+{
+ int ret;
+
+ ret = core_tpg_set_initiator_node_tag(se_nacl->se_tpg, se_nacl, page);
+
+ if (ret < 0)
+ return ret;
+ return count;
+}
+
+TF_NACL_BASE_ATTR(lio_target, tag, S_IRUGO | S_IWUSR);
+
static struct configfs_attribute *lio_target_initiator_attrs[] = {
&lio_target_nacl_info.attr,
&lio_target_nacl_cmdsn_depth.attr,
+ &lio_target_nacl_tag.attr,
NULL,
};
diff --git a/drivers/target/target_core_tpg.c b/drivers/target/target_core_tpg.c
index 0163309e2ab..5192ac0337f 100644
--- a/drivers/target/target_core_tpg.c
+++ b/drivers/target/target_core_tpg.c
@@ -616,6 +616,29 @@ int core_tpg_set_initiator_node_queue_depth(
}
EXPORT_SYMBOL(core_tpg_set_initiator_node_queue_depth);
+/* core_tpg_set_initiator_node_tag():
+ *
+ * Initiator nodeacl tags are not used internally, but may be used by
+ * userspace to emulate aliases or groups.
+ * Returns length of newly-set tag or -EINVAL.
+ */
+int core_tpg_set_initiator_node_tag(
+ struct se_portal_group *tpg,
+ struct se_node_acl *acl,
+ const char *new_tag)
+{
+ if (strlen(new_tag) >= MAX_ACL_TAG_SIZE)
+ return -EINVAL;
+
+ if (!strncmp("NULL", new_tag, 4)) {
+ acl->acl_tag[0] = '\0';
+ return 0;
+ }
+
+ return snprintf(acl->acl_tag, MAX_ACL_TAG_SIZE, "%s", new_tag);
+}
+EXPORT_SYMBOL(core_tpg_set_initiator_node_tag);
+
static int core_tpg_setup_virtual_lun0(struct se_portal_group *se_tpg)
{
/* Set in core_dev_setup_virtual_lun0() */
diff --git a/include/target/target_core_base.h b/include/target/target_core_base.h
index 1346ee04db5..7cae2360221 100644
--- a/include/target/target_core_base.h
+++ b/include/target/target_core_base.h
@@ -507,6 +507,8 @@ struct se_node_acl {
bool acl_stop:1;
u32 queue_depth;
u32 acl_index;
+#define MAX_ACL_TAG_SIZE 64
+ char acl_tag[MAX_ACL_TAG_SIZE];
u64 num_cmds;
u64 read_bytes;
u64 write_bytes;
diff --git a/include/target/target_core_fabric.h b/include/target/target_core_fabric.h
index 9087b200e55..aaa1ee6ab39 100644
--- a/include/target/target_core_fabric.h
+++ b/include/target/target_core_fabric.h
@@ -142,6 +142,8 @@ int core_tpg_del_initiator_node_acl(struct se_portal_group *,
struct se_node_acl *, int);
int core_tpg_set_initiator_node_queue_depth(struct se_portal_group *,
unsigned char *, u32, int);
+int core_tpg_set_initiator_node_tag(struct se_portal_group *,
+ struct se_node_acl *, const char *);
int core_tpg_register(struct target_core_fabric_ops *, struct se_wwn *,
struct se_portal_group *, void *, int);
int core_tpg_deregister(struct se_portal_group *);