+extern int vnet_lisp_enable_disable_xtr_mode (u8 is_enabled);
+extern int vnet_lisp_enable_disable_pitr_mode (u8 is_enabled);
+extern int vnet_lisp_enable_disable_petr_mode (u8 is_enabled);
+extern u8 vnet_lisp_get_xtr_mode (void);
+extern u8 vnet_lisp_get_pitr_mode (void);
+extern u8 vnet_lisp_get_petr_mode (void);
+