/*
* De-encapsulate a packet and feed it back through ip input (this
* routine is called whenever IP gets a packet with proto type
* IPPROTO_GRE and a local destination address).
* This really is simple
*/
void
gre_input(struct mbuf *m, int off)
{
int proto;
proto = (mtod(m, struct ip *))->ip_p;
m = gre_input2(m, off, proto);
/*
* If no matching tunnel that is up is found. We inject
* the mbuf to raw ip socket to see if anyone picks it up.
*/
if (m != NULL)
rip_input(m, off);
}
/*
* De-encapsulate a packet and feed it back through ip input (this
* routine is called whenever IP gets a packet with proto type
* IPPROTO_GRE and a local destination address).
* This really is simple
*/
int
gre_input(struct mbuf **mp, int *offp, int proto)
{
struct mbuf *m;
int ret, off;
off = *offp;
m = *mp;
*mp = NULL;
proto = (mtod(m, struct ip *))->ip_p;
ret = gre_input2(m, off, proto);
/*
* ret == 0 : packet not processed, meaning that
* no matching tunnel that is up is found.
* we inject it to raw ip socket to see if anyone picks it up.
*/
if (ret == 0) {
*mp = m;
rip_input(mp, offp, proto);
}
return(IPPROTO_DONE);
}
