int
route6_input(struct mbuf **mp, int *offp, int proto)
{
#pragma unused(proto)
struct ip6_hdr *ip6;
struct mbuf *m = *mp;
struct ip6_rthdr *rh;
int off = *offp, rhlen;
#ifdef notyet
struct ip6aux *ip6a;
ip6a = ip6_findaux(m);
if (ip6a) {
/* XXX reject home-address option before rthdr */
if (ip6a->ip6a_flags & IP6A_SWAP) {
ip6stat.ip6s_badoptions++;
m_freem(m);
return IPPROTO_DONE;
}
}
#endif /* notyet */
#ifndef PULLDOWN_TEST
IP6_EXTHDR_CHECK(m, off, sizeof(*rh), return IPPROTO_DONE);
/* Expect 32-bit aligned data pointer on strict-align platforms */
MBUF_STRICT_DATA_ALIGNMENT_CHECK_32(m);
ip6 = mtod(m, struct ip6_hdr *);
rh = (struct ip6_rthdr *)((caddr_t)ip6 + off);
#else
/* Expect 32-bit aligned data pointer on strict-align platforms */
MBUF_STRICT_DATA_ALIGNMENT_CHECK_32(m);
ip6 = mtod(m, struct ip6_hdr *);
IP6_EXTHDR_GET(rh, struct ip6_rthdr *, m, off, sizeof(*rh));
if (rh == NULL) {
ip6stat.ip6s_tooshort++;
return (IPPROTO_DONE);
}
#endif
switch (rh->ip6r_type) {
default:
/* unknown routing type */
if (rh->ip6r_segleft == 0) {
rhlen = (rh->ip6r_len + 1) << 3;
break; /* Final dst. Just ignore the header. */
}
ip6stat.ip6s_badoptions++;
icmp6_error(m, ICMP6_PARAM_PROB, ICMP6_PARAMPROB_HEADER,
(caddr_t)&rh->ip6r_type - (caddr_t)ip6);
return (IPPROTO_DONE);
}
*offp += rhlen;
return (rh->ip6r_nxt);
}
int
route6_input(struct mbuf **mp, int *offp, int proto)
{
struct ip6_hdr *ip6;
struct mbuf *m = *mp;
struct ip6_rthdr *rh;
int off = *offp, rhlen;
#ifdef __notyet__
struct ip6aux *ip6a;
ip6a = ip6_findaux(m);
if (ip6a) {
/* XXX reject home-address option before rthdr */
if (ip6a->ip6a_flags & IP6A_SWAP) {
IP6STAT_INC(ip6s_badoptions);
m_freem(m);
return IPPROTO_DONE;
}
}
#endif
#ifndef PULLDOWN_TEST
IP6_EXTHDR_CHECK(m, off, sizeof(*rh), IPPROTO_DONE);
ip6 = mtod(m, struct ip6_hdr *);
rh = (struct ip6_rthdr *)((caddr_t)ip6 + off);
#else
ip6 = mtod(m, struct ip6_hdr *);
IP6_EXTHDR_GET(rh, struct ip6_rthdr *, m, off, sizeof(*rh));
if (rh == NULL) {
IP6STAT_INC(ip6s_tooshort);
return IPPROTO_DONE;
}
#endif
/*
* While this switch may look gratuitous, leave it in
* in favour of RH2 implementations, etc.
*/
switch (rh->ip6r_type) {
default:
/* Unknown routing header type. */
if (rh->ip6r_segleft == 0) {
rhlen = (rh->ip6r_len + 1) << 3;
break; /* Final dst. Just ignore the header. */
}
IP6STAT_INC(ip6s_badoptions);
icmp6_error(m, ICMP6_PARAM_PROB, ICMP6_PARAMPROB_HEADER,
(caddr_t)&rh->ip6r_type - (caddr_t)ip6);
return (IPPROTO_DONE);
}
*offp += rhlen;
return (rh->ip6r_nxt);
}
