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46 lines
1023 B
C
46 lines
1023 B
C
/* SPDX-License-Identifier: BSD-3-Clause */
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/*
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* Copyright (c) 2013
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* Guillaume Subiron, Yann Bordenave, Serigne Modou Wagne.
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*/
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#include "slirp.h"
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/* Number of packets queued before we start sending
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* (to prevent allocing too many mbufs) */
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#define IF6_THRESH 10
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/*
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* IPv6 output. The packet in mbuf chain m contains a IP header
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*/
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int ip6_output(struct socket *so, struct mbuf *m, int fast)
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{
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Slirp *slirp = m->slirp;
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M_DUP_DEBUG(slirp, m, 0, 0);
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struct ip6 *ip = mtod(m, struct ip6 *);
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DEBUG_CALL("ip6_output");
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DEBUG_ARG("so = %p", so);
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DEBUG_ARG("m = %p", m);
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/* Fill IPv6 header */
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ip->ip_v = IP6VERSION;
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ip->ip_hl = IP6_HOP_LIMIT;
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ip->ip_tc_hi = 0;
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ip->ip_tc_lo = 0;
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ip->ip_fl_hi = 0;
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ip->ip_fl_lo = 0;
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if (fast) {
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/* We cannot fast-send non-multicast, we'd need a NDP NS */
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assert(IN6_IS_ADDR_MULTICAST(&ip->ip_dst));
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if_encap(m->slirp, m);
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m_free(m);
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} else {
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if_output(so, m);
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}
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return 0;
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}
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