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/*
* Copyright (C) 2007 Michael Brown <mbrown@fensystems.co.uk>.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
FILE_LICENCE ( GPL2_OR_LATER );
#include <stdint.h>
#include <byteswap.h>
#include <gpxe/netdevice.h>
#include <gpxe/iobuf.h>
#include <gpxe/if_ether.h>
#include <gpxe/rarp.h>
/** @file
*
* Reverse Address Resolution Protocol
*
*/
/**
* Process incoming ARP packets
*
* @v iobuf I/O buffer
* @v netdev Network device
* @v ll_source Link-layer source address
* @ret rc Return status code
*
* This is a dummy method which simply discards RARP packets.
*/
static int rarp_rx ( struct io_buffer *iobuf,
struct net_device *netdev __unused,
const void *ll_source __unused ) {
free_iob ( iobuf );
return 0;
}
/**
* Transcribe RARP address
*
* @v net_addr RARP address
* @ret string "<RARP>"
*
* This operation is meaningless for the RARP protocol.
*/
static const char * rarp_ntoa ( const void *net_addr __unused ) {
return "<RARP>";
}
/** RARP protocol */
struct net_protocol rarp_protocol __net_protocol = {
.name = "RARP",
.net_proto = htons ( ETH_P_RARP ),
.rx = rarp_rx,
.ntoa = rarp_ntoa,
};
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