www.pudn.com > TcpIpOn8051.rar > IP.H

#define MAXDATA 1500            // Maximum Ethernet data size  
#define MAXPACK (MAXDATA+14)    // Maximum packet size (incl. datalink hdr)  
#define MAXSEG (MAXDATA-40)     // Maximum TCP data ('segment') size  
#define BCASTIP 0xffffffff     	// Broadcast IP address  
 
#define PCOL_ARP    0x0806      // Protocol type: ARP  
#define PCOL_IP     0x0800      //                IP  
 
#define HTYPE       0x0001     // Hardware type: ethernet  
#define DLENGTH		14 
 
typedef struct{ 
	BYTE flag; 
	ip destip; 
	BYTE num; 
	DWORD starttime; 
	WORD ttl; 
	BYTE arpsenf; 
}arpreqbuf; 
#define ARP_TTL 50 
#define ARP_REQNUM 3 
 
typedef struct{ 
    BYTE vershlen;              //协议和头部长度 
    BYTE servicetype;           //服务类型 
    WORD totallen;              //总长度 
    WORD identification;        //标识 
    WORD fragment;              //标志(4)，片偏移量 
    BYTE ttl;                   //寿命 
    BYTE type;                  //协议 
    WORD checksum;              //首部校验和 
    ip srcip;                   //源IP 
    ip destip;                  //目的IP 
}ipheader; 
 
#define PICMP   1               //   Protocol type: ICMP  
#define PTCP    6               //                  TCP  
#define PUDP   17               //                  UDP  
 
/* ***** IP packet ('datagram') ***** */ 
#define MAXIP (MAXDATA-sizeof(ipheader)) 
 
typedef struct{ 
    ipheader i; 
    BYTE ipdata[MAXIP]; 
}ippacket; 
 
/*********IP packet send struct**********/ 
typedef struct{ 
	BYTE flag;				//the flag of ip send buffer flag,0:not use  1:in use 
	void *net_buf;		//ip send buffer head 
	BYTE buf_num;			//the number of ip send buffer 
	ip	dest_ip;				//dest ip 
	BYTE p_col;				//protcal 
	WORD lenn;				//lengh 
	DWORD starttime;		//start time 
	WORD ttl;				//TTL 
}ippack_senflag; 
#define IPBUF_TTL 200 
#define IP_TTL 100 
 
#define FRAGTRIES       8       /* Number of attempts to match a fragment 匹配次数*/ 
#define NFRAGS          3       /* No of fragments in buffer 匹配缓冲区数量*/ 
typedef struct {                /* Fragment buffer structure */ 
    WORD tries;                      /* Number of times to attempt a match 次数记录*/ 
    WORD ident;                     /* IP ident field 标识*/ 
    DWORD sip;                      /* Source IP address 源ip*/ 
    WORD oset;                      /* Offset in IP data area 偏移量*/ 
    WORD len;                       /* Length of fragment 长度*/ 
    BYTE fragdata[MAXIP];               /* Fragment data 数据*/ 
}fragbuffer; 
 
typedef struct{ 
    BYTE type; 
    BYTE icode; 
    WORD check; 
    WORD ident; 
    WORD seq; 
}icmpheader; 
 
#define ICREQ           8   // Message type: echo request  
#define ICREP           0   //               echo reply  
#define ICUNREACH       3   //               destination unreachable  
#define ICQUENCH        4   //               source quench  
#define UNREACH_NET     0   // Destination Unreachable codes: network  
#define UNREACH_HOST    1   //                                host  
#define UNREACH_PORT    3   //                                port  
#define UNREACH_FRAG    4   //     fragmentation needed, but disable flag set  
 
/* ***** ICMP packet ('datagram') ***** */ 
#define MAXICMP (MAXIP-sizeof(icmpheader)) 
typedef struct 
{ 
    ipheader i; 
    icmpheader c; 
    BYTE icmpdata[MAXICMP]; 
}icmppacket; 
 
 
 
/* ***** UDP (User Datagram Protocol) header ***** */ 
typedef struct udph 
{ 
    WORD  sport,            // Source port  
          dport,            // Destination port  
          len,              // Length of datagram + this header  
          check;            // Checksum of data, header + pseudoheader  
}udpheader; 
 
#define MAXUDP (MAXIP-sizeof(udpheader)) 
/* ***** UDP packet ('datagram') ***** */ 
typedef struct udp 
{ 
    ipheader   i;              // IP header  
    udpheader  u;              // UDP header  
    BYTE    udpdata[MAXUDP];   // Data area  
}udppacket; 
 
/* ***** Pseudo-header for UDP or TCP checksum calculation ***** */ 
/* The integers must be in hi-lo byte order for checksum */ 
typedef struct              // Pseudo-header...  
{ 
    DWORD srce,             // Source IP address  
          dest;             // Destination IP address  
    BYTE  z,                // Zero  
          pcol;             // Protocol byte  
    WORD  len;              // UDP length field  
}pheader; 
 
 
 
/*EOF*/