实现数据链路层对包的接收识别操作，当一个数据包到达网络接口时，调用函数来检测此数据包是否完整，然后判断包类型，并传输到对应的函数中进行操作，主要是是识别IP和ARP包-Data link layer receives recognition operation on the package, when a packet arrives at the network interface, call the function to detect the packet is complete, and

wolf calculated Lyapunov exponent, Pattern Recognition bayes discriminant analysis algorithm, LFM pulse compression of the Matlab program.