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#ifndef _IPXE_ARP_H
#define _IPXE_ARP_H
/** @file
*
* Address Resolution Protocol
*
*/
FILE_LICENCE ( GPL2_OR_LATER );
#include <ipxe/tables.h>
#include <ipxe/netdevice.h>
#include <ipxe/neighbour.h>
/** A network-layer protocol that relies upon ARP */
struct arp_net_protocol {
/** Network-layer protocol */
struct net_protocol *net_protocol;
/** Check existence of address
*
* @v netdev Network device
* @v net_addr Network-layer address
* @ret rc Return status code
*/
int ( * check ) ( struct net_device *netdev,
const void *net_addr );
};
/** ARP protocol table */
#define ARP_NET_PROTOCOLS \
__table ( struct arp_net_protocol, "arp_net_protocols" )
/** Declare an ARP protocol */
#define __arp_net_protocol __table_entry ( ARP_NET_PROTOCOLS, 01 )
extern struct net_protocol arp_protocol __net_protocol;
extern struct neighbour_discovery arp_discovery;
/**
* Transmit packet, determining link-layer address via ARP
*
* @v iobuf I/O buffer
* @v netdev Network device
* @v net_protocol Network-layer protocol
* @v net_dest Destination network-layer address
* @v net_source Source network-layer address
* @v ll_source Source link-layer address
* @ret rc Return status code
*/
static inline int arp_tx ( struct io_buffer *iobuf, struct net_device *netdev,
struct net_protocol *net_protocol,
const void *net_dest, const void *net_source,
const void *ll_source ) {
return neighbour_tx ( iobuf, netdev, net_protocol, net_dest,
&arp_discovery, net_source, ll_source );
}
#endif /* _IPXE_ARP_H */
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