private IPPacket(HW.Network.MACAddress srcMAC, HW.Network.MACAddress destMAC, UInt16 dataLength, byte protocol,
IPv4Address source, IPv4Address dest)
: base(destMAC, srcMAC, 0x0800, dataLength + 14 + 20)
{
mRawData[14] = 0x45;
mRawData[15] = 0;
ipLength = (UInt16)(dataLength + 20);
ipHeaderLength = 5;
mRawData[16] = (byte)((ipLength >> 8) & 0xFF);
mRawData[17] = (byte)((ipLength >> 0) & 0xFF);
fragmentID = TCPIPStack.NextIPFragmentID();
mRawData[18] = (byte)((fragmentID >> 8) & 0xFF);
mRawData[19] = (byte)((fragmentID >> 0) & 0xFF);
mRawData[20] = 0x00;
mRawData[21] = 0x00;
mRawData[22] = 0x80;
mRawData[23] = protocol;
mRawData[24] = 0x00;
mRawData[25] = 0x00;
for (int b = 0; b < 4; b++)
{
mRawData[26 + b] = source.address[b];
mRawData[30 + b] = dest.address[b];
}
ipCRC = CalcIPCRC(20);
mRawData[24] = (byte)((ipCRC >> 8) & 0xFF);
mRawData[25] = (byte)((ipCRC >> 0) & 0xFF);
initFields();
}
protected override void initFields()
{
base.initFields();
mSenderMAC = new HW.Network.MACAddress(mRawData, 22);
mSenderIP = new IPv4Address(mRawData, 28);
mTargetMAC = new HW.Network.MACAddress(mRawData, 32);
mTargetIP = new IPv4Address(mRawData, 38);
}
protected override void initFields()
{
base.initFields();
mSenderMAC = new HW.Network.MACAddress(mRawData, 22);
mSenderIP = new IPv4Address(mRawData, 28);
mTargetMAC = new HW.Network.MACAddress(mRawData, 32);
mTargetIP = new IPv4Address(mRawData, 38);
}
protected EthernetPacket(HW.Network.MACAddress dest, HW.Network.MACAddress src, UInt16 type, int packet_size)
{
mRawData = new byte[packet_size];
for (int i = 0; i < 6; i++)
{
mRawData[i] = dest.bytes[i];
mRawData[6 + i] = src.bytes[i];
}
mRawData[12] = (byte)(type >> 8);
mRawData[13] = (byte)(type >> 0);
initFields();
}
protected ARPPacket(HW.Network.MACAddress dest, HW.Network.MACAddress src, UInt16 hwType, UInt16 protoType,
byte hwLen, byte protoLen, UInt16 operation, int packet_size)
: base(dest, src, 0x0806, packet_size)
{
mRawData[14] = (byte)(hwType >> 8);
mRawData[15] = (byte)(hwType >> 0);
mRawData[16] = (byte)(protoType >> 8);
mRawData[17] = (byte)(protoType >> 0);
mRawData[18] = hwLen;
mRawData[19] = protoLen;
mRawData[20] = (byte)(operation >> 8);
mRawData[21] = (byte)(operation >> 0);
initFields();
}
protected ARPPacket_EthernetIPv4(UInt16 operation, HW.Network.MACAddress senderMAC, IPv4Address senderIP,
HW.Network.MACAddress targetMAC, IPv4Address targetIP, int packet_size)
: base(targetMAC, senderMAC, 1, 0x0800, 6, 4, operation, packet_size)
{
for (int i = 0; i < 6; i++)
{
mRawData[22 + i] = senderMAC.bytes[i];
mRawData[32 + i] = targetMAC.bytes[i];
}
for (int i = 0; i < 4; i++)
{
mRawData[28 + i] = senderIP.address[i];
mRawData[38 + i] = targetIP.address[i];
}
initFields();
}
public static void Update(IPv4Address ipAddress, HW.Network.MACAddress macAddress)
{
ensureCacheExists();
UInt32 ip_hash = ipAddress.To32BitNumber();
if (ip_hash == 0)
{
return;
}
if (cache.ContainsKey(ip_hash) == false)
{
cache.Add(ip_hash, macAddress);
}
else
{
cache[ip_hash] = macAddress;
}
}
protected virtual void initFields()
{
destMAC = new HW.Network.MACAddress(mRawData, 0);
srcMAC = new HW.Network.MACAddress(mRawData, 6);
aEtherType = (UInt16)((mRawData[12] << 8) | mRawData[13]);
}
internal ARPRequest_EthernetIPv4(HW.Network.MACAddress ourMAC, IPv4Address ourIP, HW.Network.MACAddress targetMAC, IPv4Address targetIP)
: base(1, ourMAC, ourIP, targetMAC, targetIP, 42)
{
}
protected virtual void initFields()
{
destMAC = new HW.Network.MACAddress(mRawData, 0);
srcMAC = new HW.Network.MACAddress(mRawData, 6);
aEtherType = (UInt16)((mRawData[12] << 8) | mRawData[13]);
}
