www.pudn.com > 18900_netwall_lite.rar > ifnet.h

/* 
 * 
 * $Id: ifnet.h,v 1.0.0 2003/02/27 09:10:04 yjchen Exp $ 
 * 
 * 
 *  12-Mar-2003    1.0.4       Change Htonl/Htons to Macro HTONL/HTONS 
 */ 
 
#ifndef __IFNET_H__ 
#define __IFNET_H__ 
 
 
#define	ETHER_ADDR_LENGTH		6 
#define	ETHER_TYPE_LENGTH		2 
#define ETHER_HEADER_LENGTH     14 
#define	MAX_802_3_LENGTH		1500	// Maximum Value For 802.3 Length Field 
#define	MAX_ETHER_SIZE			1514	// Maximum Ethernet Packet Length 
#define	MIN_ETHER_SIZE	  		60		// Minimum Ethernet Packet Length 
 
#define ARPHRD_ETHER 		    1	    /* ethernet hardware format */ 
#define ARPHRD_IEEE802		    6	    /* token-ring hardware format */ 
#define ARPHRD_FRELAY 		    15	    /* frame relay hardware format */ 
 
#define	ARPOP_REQUEST		    1	    /* request to resolve address */ 
#define	ARPOP_REPLY			    2	    /* response to previous request */ 
#define	ARPOP_REVREQUEST	    3	    /* request protocol address given hardware */ 
#define	ARPOP_REVREPLY		    4	    /* response giving protocol address */ 
#define ARPOP_INVREQUEST	    8 	    /* request to identify peer */ 
#define ARPOP_INVREPLY		    9	    /* response identifying peer */ 
 
#define PROTOCOL_IP			    0x0008 
#define PROTOCOL_ARP		    0x0608 
 
/* These definitions are copy from winsock.h   */ 
#define IPPROTO_ICMP            1       /* control message protocol */ 
#define IPPROTO_IGMP            2       /* group management protocol */ 
#define IPPROTO_GGP             3       /* gateway^2 (deprecated) */ 
#define IPPROTO_TCP             6       /* tcp */ 
#define IPPROTO_PUP             12      /* pup */ 
#define IPPROTO_UDP             17      /* user datagram protocol */ 
#define IPPROTO_IDP             22      /* xns idp */ 
#define IPPROTO_ND              77      /* UNOFFICIAL net disk proto */ 
 
#define IPPROTO_RAW             255     /* raw IP packet */ 
#define IPPROTO_MAX             256 
 
#pragma pack(1) 
typedef struct _EthAddr  
{ 
	unsigned char       AddrByte[6];  
 
}EthAddr, * PEthAddr;  
 
typedef struct _EthHead  
{ 
	EthAddr             DestAddr;  
	EthAddr             SourAddr;  
	unsigned short      SrvType;  
 
} EthHead, * PEthHead;   
 
typedef struct _IpHead  
{ 
	unsigned char       HeaderLengthVersion;// Version and length  
	unsigned char       TypeOfService;		// Type of service 
	unsigned short      TotalLength;		// total length of the packet 
	unsigned short      Identification;		// unique identifier 
	unsigned short      FragmentationFlags; // flags 
	unsigned char       TTL;				// Time To Live 
	unsigned char       Protocol;           // protocol (TCP, UDP etc) 
	unsigned short      CheckSum;			// IP Header checksum 
	unsigned int        sourceIPAddress;	// Source address 
	unsigned int        destIPAddress;		// Destination Address 
 
} IpHead, *PIpHead; 
 
typedef struct _TcpHead  
{ 
	unsigned short		usSrcPort;          // Source Port 
	unsigned short		usDestPort;         // Destination Port 
	unsigned long		ulSerialNo;	        // Number of Sequence 
	unsigned long		ulAckNo;            // Number of aknowledge 
    unsigned char       dataOffset;			// Pointer to data 
    unsigned char       flags;				// Flags 
    unsigned short      windows;			// Size of window 
    unsigned short      checksum;			// Total checksum 
    unsigned short      urgentPointer;		// Urgent pointer 
 
} TcpHead, *PTcpHead; 
 
typedef struct _UdpHead 
{ 
	unsigned short      SourcePort;         // Source Port 
	unsigned short      DestinationPort;    // Destination Port 
	unsigned short      Length;	            // Total length 
	unsigned short      Checksum;           // Total checksum 
} UdpHead, *PUdpHead; 
 
typedef struct	_EtherArp { 
	EthHead			    ar_hdr;		/* header of ethernet frame	  */ 
	unsigned short	    ar_hrd;		/* format of hardware address */ 
	unsigned short	    ar_pro;		/* format of protocol address */ 
	unsigned char	    ar_hln;		/* length of hardware address */ 
	unsigned char	    ar_pln;		/* length of protocol address */ 
	unsigned short	    ar_op;		/* one of: */ 
	unsigned char	    ar_sha[6];	/* sender hardware address */ 
	unsigned long	    ar_spa;		/* sender protocol address */ 
	unsigned char	    ar_tha[6];	/* target hardware address */ 
	unsigned long	    ar_tpa;		/* target protocol address */ 
}EtherArp, * PEtherArp; 
 
#pragma pack() 
 
  
unsigned long  Htonl(unsigned long  iNum); 
unsigned short Htons(unsigned short port); 
  
unsigned short CheckSum(unsigned short  *addr,  
                        unsigned short  len 
                       ); 
  
unsigned short PseudoCheckSum(unsigned short * HeaderAddr, 
                              unsigned long    Saddr, 
                              unsigned long    Daddr, 
                              unsigned char    PType, 
                              unsigned short   Lengthgth 
                            ); 
 
 
#endif	/* __IFNET_H__ */