slirp/ip6_output.c

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