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/* SPDX-License-Identifier: BSD-3-Clause */
/*
* Copyright (c) 2013
* Guillaume Subiron, Yann Bordenave, Serigne Modou Wagne.
*/
#include "slirp.h"
#include "ip6_icmp.h"
/*
* IP initialization: fill in IP protocol switch table.
* All protocols not implemented in kernel go to raw IP protocol handler.
*/
void ip6_init(Slirp *slirp)
{
icmp6_init(slirp);
}
void ip6_cleanup(Slirp *slirp)
{
icmp6_cleanup(slirp);
}
void ip6_input(struct mbuf *m)
{
struct ip6 *ip6;
Slirp *slirp = m->slirp;
if (!slirp->in6_enabled) {
goto bad;
}
DEBUG_CALL("ip6_input");
DEBUG_ARG("m = %p", m);
DEBUG_ARG("m_len = %d", m->m_len);
if (m->m_len < sizeof(struct ip6)) {
goto bad;
}
ip6 = mtod(m, struct ip6 *);
if (ip6->ip_v != IP6VERSION) {
goto bad;
}
if (ntohs(ip6->ip_pl) > slirp->if_mtu) {
icmp6_send_error(m, ICMP6_TOOBIG, 0);
goto bad;
}
/* check ip_ttl for a correct ICMP reply */
if (ip6->ip_hl == 0) {
icmp6_send_error(m, ICMP6_TIMXCEED, ICMP6_TIMXCEED_INTRANS);
goto bad;
}
/*
* Switch out to protocol's input routine.
*/
switch (ip6->ip_nh) {
case IPPROTO_TCP:
NTOHS(ip6->ip_pl);
tcp_input(m, sizeof(struct ip6), (struct socket *)NULL, AF_INET6);
break;
case IPPROTO_UDP:
udp6_input(m);
break;
case IPPROTO_ICMPV6:
icmp6_input(m);
break;
default:
m_free(m);
}
return;
bad:
m_free(m);
}
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