-extern int ppppktin __P((struct ppp_softc *sc, struct mbuf *m));
-struct mbuf *ppp_dequeue __P((struct ppp_softc *sc));
+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));