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arp.h File Reference

ARP (Address Resolution Protocol) layer header. More...

#include <net/ip.h>

Go to the source code of this file.

Data Structures
struct	arp
Defines
#define	ARPHRD_ETHER   1
	Ethernet hardware addresses.
#define	ARP_OP_REQUEST   1
	ARP request operation.
#define	ARP_OP_REPLY   2
	ARP reply operation.
#define	RARP_OP_REQUEST   3
	RARP request operation.
#define	RARP_OP_REPLY   4
	RARP reply operation.
Typedefs
typedef arp	arp_t
Functions
void	to_arp_layer (arp_t *packet)
	Get an ARP packet from the ethernet layer. Parameters: packet  The ARP packet.
void	arp_reset_cache ()
	Reset the ARP resolution cache.
void	arp_add_cache (in_addr_t ip, uint8_t *mac)
	Insert an address resolution into the ARP cache. Parameters: ip  The IP address (in network format). mac  The ethernet address.
bool	arp_remove_cache (in_addr_t ip)
	Remove an entry from the ARP cache. Parameters: ip  The IP address to remove (in network format). Returns: TRUE if the entry has been found, FALSE otherwise.
bool	arp_ip_to_eth (uint8_t *eth_addr, in_addr_t ip_addr)
	Translate from IP address to ethernet address. Parameters: eth_addr  A pointer to the ethernet address. ip_addr  The IP address to translate (in network format). Returns: TRUE if the translation can be performed, FALSE otherwise.
int	arp_ip_to_eth (uint8_t *eth_addr, uint32_t ip_addr)
int	send_arp_packet (in_addr_t ip_to, const uint8_t *eth_to, uint16_t arp_op)
	Send an ARP packet to the ethernet layer. Parameters: ip_to  The wanted IP destination address in network format. eth_to  The ethernet destination address. arp_op  The ARP operation. Returns: The number of bytes sent in case of success; a negative value if an error occurs.
void	arp_request (char *ip_dot)
	Send an ARP request. Parameters: ip_dot  The wanted IP address in numbers-and-dot notation. If ip_dot is not a valid ip address print the arp table to stdout.

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Detailed Description

ARP (Address Resolution Protocol) layer header.

Author:

Andrea Righi <drizzt@inwind.it>

Date:

Last update: 2003-11-09

Note:

Copyright (©) 2003 Andrea Righi

Definition in file arp.h.

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Define Documentation

#define ARPHRD_ETHER   1

Ethernet hardware addresses. Definition at line 14 of file arp.h.

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