blob: 834f1c0a32c7d0324f11aa01bdc11954b6c1be76 [file] [log] [blame]
/* SPDX-License-Identifier: BSD-3-Clause */
/*
* Copyright (c) 2013
* Guillaume Subiron, Yann Bordenave, Serigne Modou Wagne.
*/
#include "slirp.h"
/* Number of packets queued before we start sending
* (to prevent allocing too many mbufs) */
#define IF6_THRESH 10
/*
* IPv6 output. The packet in mbuf chain m contains a IP header
*/
int ip6_output(struct socket *so, struct mbuf *m, int fast)
{
Slirp *slirp = m->slirp;
M_DUP_DEBUG(slirp, m, 0, 0);
struct ip6 *ip = mtod(m, struct ip6 *);
DEBUG_CALL("ip6_output");
DEBUG_ARG("so = %p", so);
DEBUG_ARG("m = %p", m);
/* Fill IPv6 header */
ip->ip_v = IP6VERSION;
ip->ip_hl = IP6_HOP_LIMIT;
ip->ip_tc_hi = 0;
ip->ip_tc_lo = 0;
ip->ip_fl_hi = 0;
ip->ip_fl_lo = 0;
if (fast) {
/* We cannot fast-send non-multicast, we'd need a NDP NS */
assert(IN6_IS_ADDR_MULTICAST(&ip->ip_dst));
if_encap(m->slirp, m);
m_free(m);
} else {
if_output(so, m);
}
return 0;
}