diff --git a/libmango/include/mango/types.h b/libmango/include/mango/types.h
index 1c2b7f1..f337311 100644
--- a/libmango/include/mango/types.h
+++ b/libmango/include/mango/types.h
@@ -28,6 +28,11 @@
 		.io_base = (virt_addr_t)(p),                                   \
 		.io_len = (len),                                               \
 	}
+#define MSG_HANDLE(mode, value)                                                \
+	{                                                                      \
+		.hnd_mode = (mode),                                            \
+		.hnd_value = (value),                                          \
+	}
 #define MSG(data, data_count, handles, handles_len)                            \
 	{                                                                      \
 		.msg_data = (data),                                            \