etharp.c File Reference

Functions
void	etharp_tmr (void)

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Detailed Description

Address Resolution Protocol module for IP over Ethernet

Functionally, ARP is divided into two parts. The first maps an IP address to a physical address when sending a packet, and the second part answers requests from other machines for our physical address.

This implementation complies with RFC 826 (Ethernet ARP). It supports Gratuitious ARP from RFC3220 (IP Mobility Support for IPv4) section 4.6 if an interface calls etharp_query(our_netif, its_ip_addr, NULL) upon address change.

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Function Documentation

void etharp_tmr

(

void

)

Clears expired entries in the ARP table.

This function should be called every ETHARP_TMR_INTERVAL microseconds (5 seconds), in order to expire entries in the ARP table.

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