#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdint.h>
#include <inttypes.h>
#include <sys/types.h>

#ifndef _PROTOCOL_H_
#define _PROTOCOL_H_

//MAC header
typedef struct
{
	unsigned char DesMacAddr[6];	
	unsigned char SrcMacAddr[6];
	short LengthOrType;
}__attribute__((packed)) MAC_HEADER, *PMAC_HEADER;

//IP header
typedef struct
{
	unsigned char	hdr_len	:4;
	unsigned char	version	:4;
	unsigned char	tos;
	unsigned short	total_len;
	unsigned short	identifier;
	unsigned short	frag_and_flags;
	unsigned char	ttl;
	unsigned char	protocol;
	unsigned short	checksum;
	unsigned int	source_ip;
	unsigned int	dest_ip;
}__attribute__((packed)) IP_HEADER, *PIP_HEADER;

/*TCP*/
typedef struct _TCP_HEADER 
{
	short m_sSourPort;
	short m_sDestPort;
	unsigned int m_uiSequNum;
	unsigned int m_uiAcknowledgeNum;
	short m_sHeaderLenAndFlag;
	short m_sWindowSize;
	short m_sCheckSum;
	short m_surgentPointer;
}__attribute__((packed)) TCP_HEADER, *PTCP_HEADER;

typedef struct _TCP_OPTIONS
{
	char m_ckind;
	char m_cLength;
	char m_cContext[32];
}__attribute__((packed))TCP_OPTIONS, *PTCP_OPTIONS;

typedef struct _UDP_HEADER
{
 unsigned short m_usSourPort;
 unsigned short m_usDestPort;
 unsigned short m_usLength;
 unsigned short m_usCheckSum;
}__attribute__((packed)) UDP_HEADER, *PUDP_HEADER;

#endif //_PROTOCOL_H_

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