arp.h

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#ifndef _GPXE_ARP_H
#define _GPXE_ARP_H

/** @file
 *
 * Address Resolution Protocol
 *
 */

FILE_LICENCE ( GPL2_OR_LATER );

#include <gpxe/tables.h>

struct net_device;
struct net_protocol;

/** 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;

extern int arp_resolve ( struct net_device *netdev,
                         struct net_protocol *net_protocol,
                         const void *dest_net_addr,
                         const void *source_net_addr,
                         void *dest_ll_addr );

#endif /* _GPXE_ARP_H */