diff --git a/arch/powerpc/bits/socket.h b/arch/powerpc/bits/socket.h
index 3d97193a7a3d456a5d22c427e22d60a098376c5d..26d1010f70babe04db165bf4e26307daf307707b 100644
--- a/arch/powerpc/bits/socket.h
+++ b/arch/powerpc/bits/socket.h
@@ -9,6 +9,13 @@ struct msghdr
 	unsigned msg_flags;
 };
 
+struct cmsghdr
+{
+	socklen_t cmsg_len;
+	int cmsg_level;
+	int cmsg_type;
+};
+
 #define SO_DEBUG        1
 #define SO_REUSEADDR    2
 #define SO_TYPE         3