diff --git a/include/linux/socket.h b/include/linux/socket.h
index b5cc5a6d7011..09524774ea3f 100644
--- a/include/linux/socket.h
+++ b/include/linux/socket.h
@@ -47,6 +47,10 @@ struct linger {
 struct msghdr {
 	void		*msg_name;	/* ptr to socket address structure */
 	int		msg_namelen;	/* size of socket address structure */
+#if defined(CONFIG_PPPOLAC) || defined(CONFIG_PPPOPNS)
+	struct iovec	*msg_iov;	/* scatter/gather array */
+	__kernel_size_t	msg_iovlen;	/* # elements in msg_iov */
+#endif
 	struct iov_iter	msg_iter;	/* data */
 	void		*msg_control;	/* ancillary data */
 	__kernel_size_t	msg_controllen;	/* ancillary data buffer length */