C++ (Cpp) ip_addr_version Examples

Example #1

File: lisp_gpe_adjacency.c Project: chrisy/vpp

fib_forward_chain_type_t
lisp_gpe_adj_get_fib_chain_type (const lisp_gpe_adjacency_t * ladj)
{
  switch (ip_addr_version (&ladj->remote_rloc))
    {
    case IP4:
      return (FIB_FORW_CHAIN_TYPE_UNICAST_IP4);
    case IP6:
      return (FIB_FORW_CHAIN_TYPE_UNICAST_IP6);
    default:
      ASSERT (0);
      break;
    }
  return (FIB_FORW_CHAIN_TYPE_UNICAST_IP4);
}

Example #2

File: lisp_gpe.c Project: Venkattk/vpp

static int
lisp_gpe_rewrite (lisp_gpe_tunnel_t * t)
{
  u8 *rw = 0;
  lisp_gpe_header_t * lisp0;
  int len;

  if (ip_addr_version(&t->src) == IP4)
    {
      ip4_header_t * ip0;
      ip4_udp_lisp_gpe_header_t * h0;
      len = sizeof(*h0);

      vec_validate_aligned(rw, len - 1, CLIB_CACHE_LINE_BYTES);

      h0 = (ip4_udp_lisp_gpe_header_t *) rw;

      /* Fixed portion of the (outer) ip4 header */
      ip0 = &h0->ip4;
      ip0->ip_version_and_header_length = 0x45;
      ip0->ttl = 254;
      ip0->protocol = IP_PROTOCOL_UDP;

      /* we fix up the ip4 header length and checksum after-the-fact */
      ip_address_copy_addr(&ip0->src_address, &t->src);
      ip_address_copy_addr(&ip0->dst_address, &t->dst);
      ip0->checksum = ip4_header_checksum (ip0);

      /* UDP header, randomize src port on something, maybe? */
      h0->udp.src_port = clib_host_to_net_u16 (4341);
      h0->udp.dst_port = clib_host_to_net_u16 (UDP_DST_PORT_lisp_gpe);

      /* LISP-gpe header */
      lisp0 = &h0->lisp;
    }
  else
    {
      ip6_header_t * ip0;
      ip6_udp_lisp_gpe_header_t * h0;
      len = sizeof(*h0);

      vec_validate_aligned(rw, len - 1, CLIB_CACHE_LINE_BYTES);

      h0 = (ip6_udp_lisp_gpe_header_t *) rw;

      /* Fixed portion of the (outer) ip6 header */
      ip0 = &h0->ip6;
      ip0->ip_version_traffic_class_and_flow_label =
          clib_host_to_net_u32 (0x6 << 28);
      ip0->hop_limit = 254;
      ip0->protocol = IP_PROTOCOL_UDP;

      /* we fix up the ip6 header length after-the-fact */
      ip_address_copy_addr(&ip0->src_address, &t->src);
      ip_address_copy_addr(&ip0->dst_address, &t->dst);

      /* UDP header, randomize src port on something, maybe? */
      h0->udp.src_port = clib_host_to_net_u16 (4341);
      h0->udp.dst_port = clib_host_to_net_u16 (UDP_DST_PORT_lisp_gpe);

      /* LISP-gpe header */
      lisp0 = &h0->lisp;
    }

  lisp0->flags = t->flags;
  lisp0->ver_res = t->ver_res;
  lisp0->res = t->res;
  lisp0->next_protocol = t->next_protocol;
  lisp0->iid = clib_host_to_net_u32 (t->vni);

  t->rewrite = rw;
  return 0;
}