-struct ppp_softc *pppalloc __P((pid_t pid));
-void pppdealloc __P((struct ppp_softc *sc));
-int pppioctl __P((struct ppp_softc *sc, int cmd, caddr_t data,
- int flag, struct proc *p));
-void ppppktin __P((struct ppp_softc *sc, struct mbuf *m, int lost));
-struct mbuf *ppp_dequeue __P((struct ppp_softc *sc));
+struct ppp_softc *pppalloc(pid_t pid);
+void pppdealloc(struct ppp_softc *sc);
+int pppioctl(struct ppp_softc *sc, int cmd, caddr_t data, int flag);
+void ppp_restart(struct ppp_softc *sc);
+void ppppktin(struct ppp_softc *sc, struct mbuf *m, int lost);
+struct mbuf *ppp_dequeue(struct ppp_softc *sc);