def decode(self, data):
if len(data) < 28:
return None
data = data[:28]
packet = struct.unpack('!HHBBHIHIIHI', data)
self.hw_type = packet[0]
self.proto_type = packet[1]
self.hw_size = packet[2]
self.proto_size = packet[3]
self.opcode = packet[4]
self.sender_mac = decode_mac(packet[5], packet[6])
self.sender_ip = packet[7]
self.target_mac = decode_mac(packet[8], packet[9])
self.target_ip = packet[10]
def decode(self, data):
packet = struct.unpack('!IHIHH', data[:14])
self.destination = decode_mac(packet[0], packet[1])
self.source = decode_mac(packet[2], packet[3])
self.protocol = packet[4]
self.payload = data[14:]
