-static int if_ppp_output __P((struct ifnet *, struct mbuf *,
- struct sockaddr *));
-static int if_ppp_ioctl __P((struct ifnet *, u_int, caddr_t));
-static struct mbuf *make_mbufs __P((mblk_t *, int));
-static mblk_t *make_message __P((struct mbuf *, int));
+static int if_ppp_output(struct ifnet *, struct mbuf *,
+ struct sockaddr *);
+static int if_ppp_ioctl(struct ifnet *, u_int, caddr_t);
+static struct mbuf *make_mbufs(mblk_t *, int);
+static mblk_t *make_message(struct mbuf *, int);