public static void WriteUDPHeader(CircularFrameBuffer cfb, UDPParser up, EthernetParserGenerator ep,
IPv4ParserGenerator ip, byte ports)
{
Emu.Status = 0xff0;
ip.Protocol = 17;
ip.AssembleHeader();
//Emu.PktIn = ip.CalculateCheckSum();
//ip.HeaderChecksum = ip.CalculateCheckSum();
//ip.AssembleHeader();
ep.WriteToBuffer(cfb.PushData);
ip.WriteToBuffer(cfb.PushData, 0);
InterfaceFunctions.SetDestInterface(ports, cfb.PushData);
cfb.PushData.Tkeep = 0xFFFFFFFF;
cfb.PushData.Tlast = false;
Kiwi.Pause();
cfb.Push(cfb.PushData, true);
Emu.Status = 0xff1;
cfb.ResetPeek();
cfb.PushData.Reset();
ip.WriteToBuffer(cfb.PushData, 1);
up.WriteToBuffer(cfb.PushData, (byte)(16 + (ip.IHL - 5) * 32));
cfb.PushData.Tkeep = 0x0000003FF;
cfb.PushData.Tlast = true;
Kiwi.Pause();
cfb.Push(cfb.PushData);
Emu.Status = 0xff2;
}
public static void WriteIPv4EthernetHeader(CircularFrameBuffer cfb, EthernetParserGenerator ep, IPv4ParserGenerator ip,
byte ports)
{
ip.AssembleHeader();
ep.WriteToBuffer(cfb.PushData);
ip.WriteToBuffer(cfb.PushData, 0);
cfb.PushData.Tkeep = 0xFFFFFFFF;
cfb.PushData.Tlast = false;
InterfaceFunctions.SetDestInterface(ports, cfb.PushData);
cfb.Push(cfb.PushData);
cfb.PushData.Reset();
ip.WriteToBuffer(cfb.PushData, 1);
cfb.Push(cfb.PushData);
}
private static void SetPacketData()
{
up.SrcPort = SRC_PORT;
up.DestPort = DEST_PORT;
up.Length = UDP_LENGTH;
ep.SrcMac = SRC_ADDRESS;
ep.DestMac = DEST_ADDRESS;
ep.Ethertype = EthernetParserGenerator.ETHERTYPE_IPV4;
InterfaceFunctions.SetDestInterface(InterfaceFunctions.PORT_BROADCAST, ep);
ip.Version = 4;
ip.IHL = 5;
ip.DSCP = 0;
ip.ECN = 0;
ip.TotalLength = 0;
ip.Identification = 0;
ip.Flags = 0;
ip.FragmentOffset = 0;
ip.TTL = 255;
ip.Protocol = 0;
ip.SrcIp = SRC_IP;
ip.DestIp = DEST_IP;
ip.HeaderChecksum = ip.CalculateCheckSum();
}