//----------------------arp.h---------------
#define CACHESIZE   5
#define CACHETIME   20
#define ARP_TIMEOUT	 4

void init_arp(void);
void arp_resend(void);
void age_arp_cache(void);
void arp_receive(uchar xdata * inbuf);
uchar * arp_search(ulong dest_ipaddr);
void arp_send(uchar xdata * outbuf,uchar * macaddr, ulong ipaddr, uchar msg_type);