diff --git a/include/target/target_core_backend.h b/include/target/target_core_backend.h
new file mode 100644
index 0000000..4866499
--- /dev/null
+++ b/include/target/target_core_backend.h
@@ -0,0 +1,65 @@
+#ifndef TARGET_CORE_BACKEND_H
+#define TARGET_CORE_BACKEND_H
+
+#define TRANSPORT_PLUGIN_PHBA_PDEV		1
+#define TRANSPORT_PLUGIN_VHBA_PDEV		2
+#define TRANSPORT_PLUGIN_VHBA_VDEV		3
+
+struct se_subsystem_api {
+	struct list_head sub_api_list;
+
+	char name[16];
+	struct module *owner;
+
+	u8 transport_type;
+
+	unsigned int fua_write_emulated : 1;
+	unsigned int write_cache_emulated : 1;
+
+	int (*attach_hba)(struct se_hba *, u32);
+	void (*detach_hba)(struct se_hba *);
+	int (*pmode_enable_hba)(struct se_hba *, unsigned long);
+	void *(*allocate_virtdevice)(struct se_hba *, const char *);
+	struct se_device *(*create_virtdevice)(struct se_hba *,
+				struct se_subsystem_dev *, void *);
+	void (*free_device)(void *);
+	int (*transport_complete)(struct se_task *task);
+	struct se_task *(*alloc_task)(unsigned char *cdb);
+	int (*do_task)(struct se_task *);
+	int (*do_discard)(struct se_device *, sector_t, u32);
+	void (*do_sync_cache)(struct se_task *);
+	void (*free_task)(struct se_task *);
+	ssize_t (*check_configfs_dev_params)(struct se_hba *,
+			struct se_subsystem_dev *);
+	ssize_t (*set_configfs_dev_params)(struct se_hba *,
+			struct se_subsystem_dev *, const char *, ssize_t);
+	ssize_t (*show_configfs_dev_params)(struct se_hba *,
+			struct se_subsystem_dev *, char *);
+	u32 (*get_device_rev)(struct se_device *);
+	u32 (*get_device_type)(struct se_device *);
+	sector_t (*get_blocks)(struct se_device *);
+	unsigned char *(*get_sense_buffer)(struct se_task *);
+};
+
+int	transport_subsystem_register(struct se_subsystem_api *);
+void	transport_subsystem_release(struct se_subsystem_api *);
+
+struct se_device *transport_add_device_to_core_hba(struct se_hba *,
+		struct se_subsystem_api *, struct se_subsystem_dev *, u32,
+		void *, struct se_dev_limits *, const char *, const char *);
+
+void	transport_complete_sync_cache(struct se_cmd *, int);
+void	transport_complete_task(struct se_task *, int);
+
+void	target_get_task_cdb(struct se_task *, unsigned char *);
+
+void	transport_set_vpd_proto_id(struct t10_vpd *, unsigned char *);
+int	transport_set_vpd_assoc(struct t10_vpd *, unsigned char *);
+int	transport_set_vpd_ident_type(struct t10_vpd *, unsigned char *);
+int	transport_set_vpd_ident(struct t10_vpd *, unsigned char *);
+
+/* core helpers also used by command snooping in pscsi */
+void	*transport_kmap_first_data_page(struct se_cmd *);
+void	transport_kunmap_first_data_page(struct se_cmd *);
+
+#endif /* TARGET_CORE_BACKEND_H */