netcom.h

dsp下网络通信实验,很有用哦.平台为DSP54

#ifndef	_NETCOM_H
#define	_NETCOM_H

#include "sys.h"
#define ARP_REQUEST	0x0001
#define ARP_REPLY	0x0002
/*
 *	These are the defined Ethernet Protocol ID's.
 */
#define ETH_P_LOOP	0x0060		/* Ethernet Loopback packet	*/
#define ETH_P_PUP	0x0200		/* Xerox PUP packet		*/
#define ETH_P_PUPAT	0x0201		/* Xerox PUP Addr Trans packet	*/
#define ETH_P_IP	0x0800		/* Internet Protocol packet	*/
#define ETH_P_X25	0x0805		/* CCITT X.25			*/
#define ETH_P_ARP	0x0806		/* Address Resolution packet	*/
#define	ETH_P_BPQ	0x08FF		/* G8BPQ AX.25 Ethernet Packet	[ NOT AN OFFICIALLY REGISTERED ID ] */
#define ETH_P_IEEEPUP	0x0a00		/* Xerox IEEE802.3 PUP packet */
#define ETH_P_IEEEPUPAT	0x0a01		/* Xerox IEEE802.3 PUP Addr Trans packet */
#define ETH_P_DEC       0x6000          /* DEC Assigned proto           */
#define ETH_P_DNA_DL    0x6001          /* DEC DNA Dump/Load            */
#define ETH_P_DNA_RC    0x6002          /* DEC DNA Remote Console       */
#define ETH_P_DNA_RT    0x6003          /* DEC DNA Routing              */
#define ETH_P_LAT       0x6004          /* DEC LAT                      */
#define ETH_P_DIAG      0x6005          /* DEC Diagnostics              */
#define ETH_P_CUST      0x6006          /* DEC Customer use             */
#define ETH_P_SCA       0x6007          /* DEC Systems Comms Arch       */
#define ETH_P_RARP      0x8035		/* Reverse Addr Res packet	*/
#define ETH_P_ATALK	0x809B		/* Appletalk DDP		*/
#define ETH_P_AARP	0x80F3		/* Appletalk AARP		*/
#define ETH_P_8021Q	0x8100          /* 802.1Q VLAN Extended Header  */
#define ETH_P_IPX	0x8137		/* IPX over DIX			*/
#define ETH_P_IPV6	0x86DD		/* IPv6 over bluebook		*/
#define ETH_P_PPP_DISC	0x8863		/* PPPoE discovery messages     */
#define ETH_P_PPP_SES	0x8864		/* PPPoE session messages	*/
#define ETH_P_ATMMPOA	0x884c		/* MultiProtocol Over ATM	*/
#define ETH_P_ATMFATE	0x8884		/* Frame-based ATM Transport
						* over Ethernet
				 					*/
#define PROTO_UDP	0x11
					 
#define ETH_ALEN	6		/* Octets in one ethernet addr	 */
#define ETH_HLEN	14		/* Total octets in header.	 */
#define ETH_ZLEN	60		/* Min. octets in frame sans FCS */ 
#define ETH_DATA_MIN_LEN	46	/* Min */
#define ETH_DATA_MAX_LEN	1500	/* Max. octets in payload */
#define ETH_FRAME_LEN	1514

/* IPADDR: The IP address of this node. */
#define IPADDR0     	192
#define IPADDR1     	168
#define IPADDR2     	123
#define IPADDR3     	170
/* DIPADDR: The IP address of destinate node. */
#define DIPADDR0    	192
#define DIPADDR1    	168
#define DIPADDR2    	123
#define DIPADDR3     	222
/* NETMASK: The netmask. */
#define NETMASK0    	255
#define NETMASK1    	255
#define NETMASK2    	255
#define NETMASK3    	0

/* DRIPADDR: IP address of the default router. */
#define DRIPADDR0   	192
#define DRIPADDR1   	168 
#define DRIPADDR2   	123
#define DRIPADDR3   	1

/* ETHADDR: The Ethernet address of the node */
#define ETHADDR0    	0x01
#define ETHADDR1    	0x0a
#define ETHADDR2    	0xeb
#define ETHADDR3    	0x1c
#define ETHADDR4    	0x07
#define ETHADDR5    	0x0b

/* ETHADDR: The Ethernet address of the destinate node */
#define DETHADDR0    	0x00		//canbaby's notebook NIC's PAR	
#define DETHADDR1    	0x0a
#define DETHADDR2    	0xeb
#define DETHADDR3    	0x1c
#define DETHADDR4    	0x0c
#define DETHADDR5    	0x34

/* UDP source port and destinate port */
#define	SRCUDPPORT	0x1200
#define DESTUDPPORT	0x1201

/* length of byte */
#define UDPHDR_LEN	8		
#define IPHDR_LEN	20
#define ETHHDR_LEN	14
#define	ARPHDR_LEN	28
#define	PSEUD_UDPHDR_LEN	12

/* protocol header define */
typedef struct _ethhdr 
{
	u16_t	destaddr0:8,
		destaddr1:8,
		destaddr2:8,
		destaddr3:8,
		destaddr4:8,
		destaddr5:8;	/* destination eth addr	*/
	u16_t	srcaddr0:8,
		srcaddr1:8,
		srcaddr2:8,
		srcaddr3:8,
		srcaddr4:8,
		srcaddr5:8;	/* source ether addr */
	u16_t	proto;		/* packet type ID field	*/
}ethhdr,*pethhdr;

typedef struct  _iphdr{
	u16_t	ver:4,hdrlen:4,tos:8,totlen;
	u16_t	id,frag_offset;
	u16_t 	ttl:8,proto:8,checksum;
	u16_t	srcipaddr0:8,srcipaddr1:8,srcipaddr2:8,srcipaddr3:8;
	u16_t	destipaddr0:8,destipaddr1:8,destipaddr2:8,destipaddr3:8;
	/* option start here */
}iphdr,*piphdr;

typedef struct _udphdr{
	u16_t	srcport,destport;
	u16_t 	len,checksum;
}udphdr,*pudphdr;

typedef struct _arphdr{//28 byte
	u16_t	hdtype;	//0x00 01,10Mb ethnet
	u16_t	proto;	//0x08 00,ip 
	u16_t	hdlen:8,protolen:8;
	u16_t	opcode;//reuest 1,reply 2
	u16_t	send_hd_addr0:8,
		send_hd_addr1:8,
		send_hd_addr2:8,
		send_hd_addr3:8,
		send_hd_addr4:8,
		send_hd_addr5:8;
	u16_t	send_ip_addr0:8,
		send_ip_addr1:8,
		send_ip_addr2:8,
		send_ip_addr3:8;
	u16_t	target_hd_addr0:8,
		target_hd_addr1:8,
		target_hd_addr2:8,
		target_hd_addr3:8,
		target_hd_addr4:8,
		target_hd_addr5:8;
	u16_t	target_ip_addr0:8,
		target_ip_addr1:8,
		target_ip_addr2:8,
		target_ip_addr3:8;
}arphdr,*parphdr;

typedef struct _eth_arp_hdr{
	ethhdr	ehdr;
	arphdr	ahdr;
}eth_arp_hdr,*peth_arp_hdr;

typedef struct _eth_ip_udp_hdr{
	ethhdr	ehdr;
	iphdr	ihdr;
	udphdr	uhdr;
}eth_ip_udp_hdr,*peth_ip_udp_hdr;

#define htons(n) ((((unsigned short)((n) & 0xff)) << 8) | (((n) & 0xff00) >> 8))
#define ntohs(n) htons(n)

#define	TOKEN_SEND_DATA		0x0001
#define	TOKEN_DATA			0x0002
#define	TOKEN_STATUS		0x0004

#endif