C++ (Cpp) tcpip_get_inputfunc Beispiele

Beispiel #1

Datei: packet-filter.c Projekt: TiagoLourenco/6lbr

void
packet_filter_init(void)
{
  wireless_outputfunc = tcpip_get_outputfunc();
  tcpip_set_outputfunc(bridge_output);

  tcpip_inputfunc = tcpip_get_inputfunc();

  tcpip_set_inputfunc(wireless_input);
}

Beispiel #2

Datei: packet-filter.c Projekt: Scypho/6lbr

static uint8_t
bridge_output(const uip_lladdr_t * dest)
{
  int ethernetDest = 0;
  int wsnDest = 0;
  if(uip_len == 0) {
    LOG6LBR_ERROR("Trying to send empty packet\n");
    return 0;
  }
  if(!IS_BROADCAST_ADDR(dest)) {
    LOG6LBR_LLADDR_PRINTF(PACKET, PF_OUT, dest, "bridge_output: Sending packet to ");
  } else {
    LOG6LBR_PRINTF(PACKET, PF_OUT, "bridge_output: Sending packet to Broadcast\n");
  }

  if(uip_ipaddr_prefixcmp(&eth_net_prefix, &UIP_IP_BUF->destipaddr, 64)) {
    LOG6LBR_6ADDR_PRINTF(PACKET, PF_OUT, &eth_net_prefix, "dest prefix eth : ");
    LOG6LBR_6ADDR_PRINTF(PACKET, PF_OUT, &UIP_IP_BUF->destipaddr, "dest eth : ");
    //Packet destinated to the Ethernet subnet
    ethernetDest = 1;
  } else if(uip_ipaddr_prefixcmp(&wsn_net_prefix, &UIP_IP_BUF->destipaddr, 64)) {
    LOG6LBR_6ADDR_PRINTF(PACKET, PF_OUT, &wsn_net_prefix, "dest prefix wsn : ");
    LOG6LBR_6ADDR_PRINTF(PACKET, PF_OUT, &UIP_IP_BUF->destipaddr, "dest prefix wsn : ");
    //Packet destinated to the WSN subnet
    wsnDest = 1;
  } else if(IS_EUI64_ADDR(dest)) {
    //Destination unknown but next-hop is in WSN subnet
    wsnDest = 1;
  } else if (IS_EUI48_ADDR(dest)) {
    //Destination unknown but next-hop is in Ethernet subnet
    ethernetDest = 1;
  } else {
    //Obviously we can not guess the target segment for a multicast packet
    //So we have to check the packet source prefix (and match it on the Ethernet segment prefix)
    //or, in case of link-local packet, check packet type and/or packet data
#if UIP_CONF_IPV6_RPL
    //in RPL mode, RA and RS packets are used to configure the Ethernet subnet
    if(UIP_IP_BUF->proto == UIP_PROTO_ICMP6 &&
        (UIP_ICMP_BUF->type == ICMP6_RA || UIP_ICMP_BUF->type == ICMP6_RS)) {
      ethernetDest = 1;
    } else if (UIP_IP_BUF->proto == UIP_PROTO_ICMP6
        && UIP_ICMP_BUF->type == ICMP6_NS
        && uip_ipaddr_prefixcmp(&eth_net_prefix,
                                &UIP_ND6_NS_BUF->tgtipaddr, 64)) {
      ethernetDest = 1;
#else
    //in NDP mode, RA and RS packets are used to configure the WSN subnet
    if(UIP_IP_BUF->proto == UIP_PROTO_ICMP6 &&
        (UIP_ICMP_BUF->type == ICMP6_RA || UIP_ICMP_BUF->type == ICMP6_RS)) {
      wsnDest = 1;
    } else if (UIP_IP_BUF->proto == UIP_PROTO_ICMP6
        && UIP_ICMP_BUF->type == ICMP6_NS
        && uip_ipaddr_prefixcmp(&wsn_net_prefix,
                                &UIP_ND6_NS_BUF->tgtipaddr, 64)) {
      wsnDest = 1;
#endif
    } else if(UIP_IP_BUF->proto == UIP_PROTO_ICMP6 &&
        UIP_ICMP_BUF->type == ICMP6_RPL) {
      //RPL packets are always for WSN subnet
      wsnDest = 1;
    } else if(uip_ipaddr_prefixcmp(&eth_net_prefix, &UIP_IP_BUF->srcipaddr, 64)) {
      //Packet type unknown, but source is from Ethernet subnet
      ethernetDest = 1;
    } else if(uip_ipaddr_prefixcmp(&wsn_net_prefix, &UIP_IP_BUF->srcipaddr, 64)) {
      //Packet type unknown, but source is from WSN subnet
      wsnDest = 1;
    } else {
      // We could not guess the destination, forward to both
      ethernetDest = 1;
      wsnDest = 1;
    }
  }
  if(wsnDest) {
#if CETIC_6LBR_ONE_ITF
    eth_output(&wsn_mac_addr, dest);
#else
    wireless_output(NULL, dest);
#endif
  }
  if(ethernetDest) {
    eth_output(NULL, dest);
  }
  return 0;
}
#endif

/*---------------------------------------------------------------------------*/

void
packet_filter_init(void)
{
  wireless_outputfunc = tcpip_get_outputfunc();
  tcpip_set_outputfunc(bridge_output);

  tcpip_inputfunc = tcpip_get_inputfunc();

  tcpip_set_inputfunc(wireless_input);
}