-/* $Id: if_ppp.c,v 1.4 1996/07/01 05:30:45 paulus Exp $ */
+/* $Id: if_ppp.c,v 1.6 1997/03/04 03:33:00 paulus Exp $ */
/*
* if_ppp.c - Point-to-Point Protocol (PPP) Asynchronous driver.
#include <net/ppp-comp.h>
#endif
+static int pppsioctl __P((struct ifnet *, u_long, caddr_t));
+static int pppoutput __P((struct ifnet *, struct mbuf *,
+ struct sockaddr *, struct rtentry *));
static void ppp_requeue __P((struct ppp_softc *));
static void ppp_outpkt __P((struct ppp_softc *));
static void ppp_ccp __P((struct ppp_softc *, struct mbuf *m, int rcvd));
/*
* Process an ioctl request to the ppp network interface.
*/
-int
+static int
pppsioctl(ifp, cmd, data)
register struct ifnet *ifp;
u_long cmd;
for (mp = m; mp != NULL; mp = mp->m_next)
slen += mp->m_len;
clen = (*sc->sc_xcomp->compress)
- (sc->sc_xc_state, &mcomp, m, slen,
- (sc->sc_flags & SC_CCP_UP? sc->sc_if.if_mtu: 0));
+ (sc->sc_xc_state, &mcomp, m, slen, sc->sc_if.if_mtu + PPP_HDRLEN);
if (mcomp != NULL) {
- m_freem(m);
- m = mcomp;
- cp = mtod(m, u_char *);
- protocol = cp[3];
+ if (sc->sc_flags & SC_CCP_UP) {
+ /* Send the compressed packet instead of the original. */
+ m_freem(m);
+ m = mcomp;
+ cp = mtod(m, u_char *);
+ protocol = cp[3];
+ } else {
+ /* Can't transmit compressed packets until CCP is up. */
+ m_freem(mcomp);
+ }
}
}
#endif /* PPP_COMPRESS */