target: Add se_portal_group->tpg_auth_group

This patch adds an optional /auth/ configfs group to TPG context that
can be used by fabrics like iscsi-target for TPG demo-mode
authentication.

Cc: Dax Kelson <dkelson@gurulabs.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>

4 files changed, 33 insertions, 3 deletions

diff --git a/drivers/target/target_core_fabric_configfs.c b/drivers/target/target_core_fabric_configfs.c
index 04c775cb3e65..eb56eb129563 100644
--- a/drivers/target/target_core_fabric_configfs.c
+++ b/drivers/target/target_core_fabric_configfs.c
@@ -965,6 +965,19 @@ TF_CIT_SETUP(tpg_attrib, &target_fabric_tpg_attrib_item_ops, NULL, NULL);
 
 /* End of tfc_tpg_attrib_cit */
 
+/* Start of tfc_tpg_auth_cit */
+
+CONFIGFS_EATTR_OPS(target_fabric_tpg_auth, se_portal_group, tpg_auth_group);
+
+static struct configfs_item_operations target_fabric_tpg_auth_item_ops = {
+        .show_attribute         = target_fabric_tpg_auth_attr_show,
+        .store_attribute        = target_fabric_tpg_auth_attr_store,
+};
+
+TF_CIT_SETUP(tpg_auth, &target_fabric_tpg_auth_item_ops, NULL, NULL);
+
+/* End of tfc_tpg_attrib_cit */
+
 /* Start of tfc_tpg_param_cit */
 
 CONFIGFS_EATTR_OPS(target_fabric_tpg_param, se_portal_group, tpg_param_group);
@@ -1030,8 +1043,9 @@ static struct config_group *target_fabric_make_tpg(
         se_tpg->tpg_group.default_groups[1] = &se_tpg->tpg_np_group;
         se_tpg->tpg_group.default_groups[2] = &se_tpg->tpg_acl_group;
         se_tpg->tpg_group.default_groups[3] = &se_tpg->tpg_attrib_group;
-        se_tpg->tpg_group.default_groups[4] = &se_tpg->tpg_param_group;
-        se_tpg->tpg_group.default_groups[5] = NULL;
+        se_tpg->tpg_group.default_groups[4] = &se_tpg->tpg_auth_group;
+        se_tpg->tpg_group.default_groups[5] = &se_tpg->tpg_param_group;
+        se_tpg->tpg_group.default_groups[6] = NULL;
 
         config_group_init_type_name(&se_tpg->tpg_group, name,
                         &TF_CIT_TMPL(tf)->tfc_tpg_base_cit);
@@ -1043,6 +1057,8 @@ static struct config_group *target_fabric_make_tpg(
                         &TF_CIT_TMPL(tf)->tfc_tpg_nacl_cit);
         config_group_init_type_name(&se_tpg->tpg_attrib_group, "attrib",
                         &TF_CIT_TMPL(tf)->tfc_tpg_attrib_cit);
+        config_group_init_type_name(&se_tpg->tpg_auth_group, "auth",
+                        &TF_CIT_TMPL(tf)->tfc_tpg_auth_cit);
         config_group_init_type_name(&se_tpg->tpg_param_group, "param",
                         &TF_CIT_TMPL(tf)->tfc_tpg_param_cit);
 
@@ -1202,6 +1218,7 @@ int target_fabric_setup_cits(struct target_fabric_configfs *tf)
         target_fabric_setup_tpg_np_cit(tf);
         target_fabric_setup_tpg_np_base_cit(tf);
         target_fabric_setup_tpg_attrib_cit(tf);
+        target_fabric_setup_tpg_auth_cit(tf);
         target_fabric_setup_tpg_param_cit(tf);
         target_fabric_setup_tpg_nacl_cit(tf);
         target_fabric_setup_tpg_nacl_base_cit(tf);
diff --git a/include/target/target_core_base.h b/include/target/target_core_base.h
index 9fd7a60f47f0..d92ec6765f5d 100644
--- a/include/target/target_core_base.h
+++ b/include/target/target_core_base.h
@@ -795,11 +795,12 @@ struct se_portal_group {
         struct target_core_fabric_ops *se_tpg_tfo;
         struct se_wwn           *se_tpg_wwn;
         struct config_group     tpg_group;
-        struct config_group     *tpg_default_groups[6];
+        struct config_group     *tpg_default_groups[7];
         struct config_group     tpg_lun_group;
         struct config_group     tpg_np_group;
         struct config_group     tpg_acl_group;
         struct config_group     tpg_attrib_group;
+        struct config_group     tpg_auth_group;
         struct config_group     tpg_param_group;
 };
 
diff --git a/include/target/target_core_configfs.h b/include/target/target_core_configfs.h
index 612509592ffd..713c5004f4ae 100644
--- a/include/target/target_core_configfs.h
+++ b/include/target/target_core_configfs.h
@@ -23,6 +23,7 @@ struct target_fabric_configfs_template {
         struct config_item_type tfc_tpg_np_cit;
         struct config_item_type tfc_tpg_np_base_cit;
         struct config_item_type tfc_tpg_attrib_cit;
+        struct config_item_type tfc_tpg_auth_cit;
         struct config_item_type tfc_tpg_param_cit;
         struct config_item_type tfc_tpg_nacl_cit;
         struct config_item_type tfc_tpg_nacl_base_cit;
diff --git a/include/target/target_core_fabric_configfs.h b/include/target/target_core_fabric_configfs.h
index a26fb7586a09..b32a14905cfa 100644
--- a/include/target/target_core_fabric_configfs.h
+++ b/include/target/target_core_fabric_configfs.h
@@ -62,6 +62,17 @@ static struct target_fabric_tpg_attrib_attribute _fabric##_tpg_attrib_##_name =
         _fabric##_tpg_attrib_show_##_name,                              \
         _fabric##_tpg_attrib_store_##_name);
 
+CONFIGFS_EATTR_STRUCT(target_fabric_tpg_auth, se_portal_group);
+#define TF_TPG_AUTH_ATTR(_fabric, _name, _mode)                         \
+static struct target_fabric_tpg_auth_attribute _fabric##_tpg_auth_##_name = \
+        __CONFIGFS_EATTR(_name, _mode,                                  \
+        _fabric##_tpg_auth_show_##_name,                                \
+        _fabric##_tpg_auth_store_##_name);
+
+#define TF_TPG_AUTH_ATTR_RO(_fabric, _name)                             \
+static struct target_fabric_tpg_auth_attribute _fabric##_tpg_auth_##_name = \
+        __CONFIGFS_EATTR_RO(_name,                                      \
+        _fabric##_tpg_auth_show_##_name);
 
 CONFIGFS_EATTR_STRUCT(target_fabric_tpg_param, se_portal_group);
 #define TF_TPG_PARAM_ATTR(_fabric, _name, _mode)                        \