eth.h

实用的程序代码

/*
 * Ethernet Header File
 */

#ifndef _ETH_H
#define _ETH_H

#include <net/ip.h>

#define ETH_ADDR_LEN	       6   /* len of eth addr */	
#define ETH_HDR_LEN	        14   /* eth hdr len */	
#define ETH_MIN_FRAME_LEN	  60   /* Min Eth Frame Payload */	

#define ETH_MAX_FRAME_LEN	  1500 /* Max Eth Frame Payload */	
#define ETH_FRAME_LEN	      1514 /* Max Eth Frame Size */	


/* MAC address used */
extern unsigned int MYMAC_BASEADDR;

/*
 * Protocol vals in eth hdr 
 */

#define ETH_PROTO_IP	0x0800		/* IP  packet	*/
#define ETH_PROTO_ARP	0x0806		/* ARP packet	*/



/*
 * Ethernet Header
 */
 
struct xilnet_eth_hdr {
  unsigned char	dest_addr[ETH_ADDR_LEN];  /* destination eth addr	*/
  unsigned char	src_addr[ETH_ADDR_LEN];	  /* source eth addr	*/
  unsigned short type;		          /* protocol type */
};


/*
 * HW Addr Table
 *
 */

#define HW_ADDR_TBL_ENTRIES     5
#define HW_ADDR_ENTRY_IS_TRUE   1
#define HW_ADDR_ENTRY_IS_FALSE  0

struct xilnet_hw_addr_table 
{
  unsigned char ip_addr[IP_VERSION];
  unsigned char hw_addr[ETH_ADDR_LEN];
  unsigned char flag;
};

extern struct xilnet_hw_addr_table xilnet_hw_tbl[HW_ADDR_TBL_ENTRIES];

#endif	/* _ETH_H */