diff --git a/include/efi_api.h b/include/efi_api.h
index bdb600e..5c3836a 100644
--- a/include/efi_api.h
+++ b/include/efi_api.h
@@ -268,6 +268,19 @@
 	u16 length;
 };
 
+struct efi_mac_addr {
+	u8 addr[32];
+};
+
+#define DEVICE_PATH_TYPE_MESSAGING_DEVICE	0x03
+#  define DEVICE_PATH_SUB_TYPE_MSG_MAC_ADDR	0x0b
+
+struct efi_device_path_mac_addr {
+	struct efi_device_path dp;
+	struct efi_mac_addr mac;
+	u8 if_type;
+};
+
 #define DEVICE_PATH_TYPE_MEDIA_DEVICE		0x04
 #  define DEVICE_PATH_SUB_TYPE_FILE_PATH	0x04