/************************************************************
 * File name	: Arp.h										*
 * By 			: hugang, hgx2000@mail.china.com			*
 ************************************************************/

#ifndef __ARP_H__
#define __ARP_H__

#define ARP_CACHE_SIZE   16

typedef struct _ARP_ENTRY {
	unsigned char mac[MACLEN];
	unsigned int  ip;
} ARP_ENTRY;

int   ArpInit(void);
int   ArpAddEntry(unsigned int ip, unsigned char *mac);
int   ArpAddCache(unsigned int ip, unsigned char *mac);
int   ArpFindCache(unsigned int ip, unsigned char *mac);
int   ArpSendReq(ETHERFRAME *efp, NODE *destp);

short IsArp(ETHERFRAME *efp, short len);
short MakeArp(ETHERFRAME *efp, NODE *srcep, NODE *destp, unsigned short codetype);
void  SwapArp(ETHERFRAME *efp);
void  ArpRcvPacket(ETHERFRAME *efp);
#endif