qemu/slirp/src/ip6_output.c
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   1/* SPDX-License-Identifier: BSD-3-Clause */
   2/*
   3 * Copyright (c) 2013
   4 * Guillaume Subiron, Yann Bordenave, Serigne Modou Wagne.
   5 */
   6
   7#include "slirp.h"
   8
   9/* Number of packets queued before we start sending
  10 * (to prevent allocing too many mbufs) */
  11#define IF6_THRESH 10
  12
  13/*
  14 * IPv6 output. The packet in mbuf chain m contains a IP header
  15 */
  16int ip6_output(struct socket *so, struct mbuf *m, int fast)
  17{
  18    struct ip6 *ip = mtod(m, struct ip6 *);
  19
  20    DEBUG_CALL("ip6_output");
  21    DEBUG_ARG("so = %p", so);
  22    DEBUG_ARG("m = %p", m);
  23
  24    /* Fill IPv6 header */
  25    ip->ip_v = IP6VERSION;
  26    ip->ip_hl = IP6_HOP_LIMIT;
  27    ip->ip_tc_hi = 0;
  28    ip->ip_tc_lo = 0;
  29    ip->ip_fl_hi = 0;
  30    ip->ip_fl_lo = 0;
  31
  32    if (fast) {
  33        if_encap(m->slirp, m);
  34    } else {
  35        if_output(so, m);
  36    }
  37
  38    return 0;
  39}
  40