1 files changed, 0 insertions, 289 deletions
diff --git a/gpxe/src/net/arp.c b/gpxe/src/net/arp.c
deleted file mode 100644
index 124a856e..00000000
--- a/gpxe/src/net/arp.c
+++ /dev/null
@@ -1,289 +0,0 @@
-/*
- * Copyright (C) 2006 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 <string.h>
-#include <byteswap.h>
-#include <errno.h>
-#include <gpxe/if_ether.h>
-#include <gpxe/if_arp.h>
-#include <gpxe/iobuf.h>
-#include <gpxe/netdevice.h>
-#include <gpxe/arp.h>
-
-/** @file
- *
- * Address Resolution Protocol
- *
- * This file implements the address resolution protocol as defined in
- * RFC826.  The implementation is media-independent and
- * protocol-independent; it is not limited to Ethernet or to IPv4.
- *
- */
-
-/** An ARP cache entry */
-struct arp_entry {
-	/** Network-layer protocol */
-	struct net_protocol *net_protocol;
-	/** Link-layer protocol */
-	struct ll_protocol *ll_protocol;
-	/** Network-layer address */
-	uint8_t net_addr[MAX_NET_ADDR_LEN];
-	/** Link-layer address */
-	uint8_t ll_addr[MAX_LL_ADDR_LEN];
-};
-
-/** Number of entries in the ARP cache
- *
- * This is a global cache, covering all network interfaces,
- * network-layer protocols and link-layer protocols.
- */
-#define NUM_ARP_ENTRIES 4
-
-/** The ARP cache */
-static struct arp_entry arp_table[NUM_ARP_ENTRIES];
-#define arp_table_end &arp_table[NUM_ARP_ENTRIES]
-
-static unsigned int next_new_arp_entry = 0;
-
-struct net_protocol arp_protocol;
-
-/**
- * Find entry in the ARP cache
- *
- * @v ll_protocol	Link-layer protocol
- * @v net_protocol	Network-layer protocol
- * @v net_addr		Network-layer address
- * @ret arp		ARP cache entry, or NULL if not found
- *
- */
-static struct arp_entry *
-arp_find_entry ( struct ll_protocol *ll_protocol,
-		 struct net_protocol *net_protocol,
-		 const void *net_addr ) {
-	struct arp_entry *arp;
-
-	for ( arp = arp_table ; arp < arp_table_end ; arp++ ) {
-		if ( ( arp->ll_protocol == ll_protocol ) &&
-		     ( arp->net_protocol == net_protocol ) &&
-		     ( memcmp ( arp->net_addr, net_addr,
-				net_protocol->net_addr_len ) == 0 ) )
-			return arp;
-	}
-	return NULL;
-}
-
-/**
- * Look up media-specific link-layer address in the ARP cache
- *
- * @v netdev		Network device
- * @v net_protocol	Network-layer protocol
- * @v dest_net_addr	Destination network-layer address
- * @v source_net_addr	Source network-layer address
- * @ret dest_ll_addr	Destination link layer address
- * @ret rc		Return status code
- *
- * This function will use the ARP cache to look up the link-layer
- * address for the link-layer protocol associated with the network
- * device and the given network-layer protocol and addresses.  If
- * found, the destination link-layer address will be filled in in @c
- * dest_ll_addr.
- *
- * If no address is found in the ARP cache, an ARP request will be
- * transmitted on the specified network device and -ENOENT will be
- * returned.
- */
-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 ) {
-	struct ll_protocol *ll_protocol = netdev->ll_protocol;
-	const struct arp_entry *arp;
-	struct io_buffer *iobuf;
-	struct arphdr *arphdr;
-	int rc;
-
-	/* Look for existing entry in ARP table */
-	arp = arp_find_entry ( ll_protocol, net_protocol, dest_net_addr );
-	if ( arp ) {
-		DBG ( "ARP cache hit: %s %s => %s %s\n",
-		      net_protocol->name, net_protocol->ntoa ( arp->net_addr ),
-		      ll_protocol->name, ll_protocol->ntoa ( arp->ll_addr ) );
-		memcpy ( dest_ll_addr, arp->ll_addr, ll_protocol->ll_addr_len);
-		return 0;
-	}
-	DBG ( "ARP cache miss: %s %s\n", net_protocol->name,
-	      net_protocol->ntoa ( dest_net_addr ) );
-
-	/* Allocate ARP packet */
-	iobuf = alloc_iob ( MAX_LL_HEADER_LEN + sizeof ( *arphdr ) +
-			  2 * ( MAX_LL_ADDR_LEN + MAX_NET_ADDR_LEN ) );
-	if ( ! iobuf )
-		return -ENOMEM;
-	iob_reserve ( iobuf, MAX_LL_HEADER_LEN );
-
-	/* Build up ARP request */
-	arphdr = iob_put ( iobuf, sizeof ( *arphdr ) );
-	arphdr->ar_hrd = ll_protocol->ll_proto;
-	arphdr->ar_hln = ll_protocol->ll_addr_len;
-	arphdr->ar_pro = net_protocol->net_proto;
-	arphdr->ar_pln = net_protocol->net_addr_len;
-	arphdr->ar_op = htons ( ARPOP_REQUEST );
-	memcpy ( iob_put ( iobuf, ll_protocol->ll_addr_len ),
-		 netdev->ll_addr, ll_protocol->ll_addr_len );
-	memcpy ( iob_put ( iobuf, net_protocol->net_addr_len ),
-		 source_net_addr, net_protocol->net_addr_len );
-	memset ( iob_put ( iobuf, ll_protocol->ll_addr_len ),
-		 0, ll_protocol->ll_addr_len );
-	memcpy ( iob_put ( iobuf, net_protocol->net_addr_len ),
-		 dest_net_addr, net_protocol->net_addr_len );
-
-	/* Transmit ARP request */
-	if ( ( rc = net_tx ( iobuf, netdev, &arp_protocol, 
-			     netdev->ll_broadcast ) ) != 0 )
-		return rc;
-
-	return -ENOENT;
-}
-
-/**
- * Identify ARP protocol
- *
- * @v net_proto			Network-layer protocol, in network-endian order
- * @ret arp_net_protocol	ARP protocol, or NULL
- *
- */
-static struct arp_net_protocol * arp_find_protocol ( uint16_t net_proto ) {
-	struct arp_net_protocol *arp_net_protocol;
-
-	for_each_table_entry ( arp_net_protocol, ARP_NET_PROTOCOLS ) {
-		if ( arp_net_protocol->net_protocol->net_proto == net_proto ) {
-			return arp_net_protocol;
-		}
-	}
-	return NULL;
-}
-
-/**
- * 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 handles ARP requests and responses as detailed in RFC826.  The
- * method detailed within the RFC is pretty optimised, handling
- * requests and responses with basically a single code path and
- * avoiding the need for extraneous ARP requests; read the RFC for
- * details.
- */
-static int arp_rx ( struct io_buffer *iobuf, struct net_device *netdev,
-		    const void *ll_source __unused ) {
-	struct arphdr *arphdr = iobuf->data;
-	struct arp_net_protocol *arp_net_protocol;
-	struct net_protocol *net_protocol;
-	struct ll_protocol *ll_protocol;
-	struct arp_entry *arp;
-	int merge = 0;
-
-	/* Identify network-layer and link-layer protocols */
-	arp_net_protocol = arp_find_protocol ( arphdr->ar_pro );
-	if ( ! arp_net_protocol )
-		goto done;
-	net_protocol = arp_net_protocol->net_protocol;
-	ll_protocol = netdev->ll_protocol;
-
-	/* Sanity checks */
-	if ( ( arphdr->ar_hrd != ll_protocol->ll_proto ) ||
-	     ( arphdr->ar_hln != ll_protocol->ll_addr_len ) ||
-	     ( arphdr->ar_pln != net_protocol->net_addr_len ) )
-		goto done;
-
-	/* See if we have an entry for this sender, and update it if so */
-	arp = arp_find_entry ( ll_protocol, net_protocol,
-			       arp_sender_pa ( arphdr ) );
-	if ( arp ) {
-		memcpy ( arp->ll_addr, arp_sender_ha ( arphdr ),
-			 arphdr->ar_hln );
-		merge = 1;
-		DBG ( "ARP cache update: %s %s => %s %s\n",
-		      net_protocol->name, net_protocol->ntoa ( arp->net_addr ),
-		      ll_protocol->name, ll_protocol->ntoa ( arp->ll_addr ) );
-	}
-
-	/* See if we own the target protocol address */
-	if ( arp_net_protocol->check ( netdev, arp_target_pa ( arphdr ) ) != 0)
-		goto done;
-	
-	/* Create new ARP table entry if necessary */
-	if ( ! merge ) {
-		arp = &arp_table[next_new_arp_entry++ % NUM_ARP_ENTRIES];
-		arp->ll_protocol = ll_protocol;
-		arp->net_protocol = net_protocol;
-		memcpy ( arp->ll_addr, arp_sender_ha ( arphdr ),
-			 arphdr->ar_hln );
-		memcpy ( arp->net_addr, arp_sender_pa ( arphdr ),
-			 arphdr->ar_pln);
-		DBG ( "ARP cache add: %s %s => %s %s\n",
-		      net_protocol->name, net_protocol->ntoa ( arp->net_addr ),
-		      ll_protocol->name, ll_protocol->ntoa ( arp->ll_addr ) );
-	}
-
-	/* If it's not a request, there's nothing more to do */
-	if ( arphdr->ar_op != htons ( ARPOP_REQUEST ) )
-		goto done;
-
-	/* Change request to a reply */
-	DBG ( "ARP reply: %s %s => %s %s\n", net_protocol->name,
-	      net_protocol->ntoa ( arp_target_pa ( arphdr ) ),
-	      ll_protocol->name, ll_protocol->ntoa ( netdev->ll_addr ) );
-	arphdr->ar_op = htons ( ARPOP_REPLY );
-	memswap ( arp_sender_ha ( arphdr ), arp_target_ha ( arphdr ),
-		 arphdr->ar_hln + arphdr->ar_pln );
-	memcpy ( arp_sender_ha ( arphdr ), netdev->ll_addr, arphdr->ar_hln );
-
-	/* Send reply */
-	net_tx ( iob_disown ( iobuf ), netdev, &arp_protocol,
-		 arp_target_ha ( arphdr ) );
-
- done:
-	free_iob ( iobuf );
-	return 0;
-}
-
-/**
- * Transcribe ARP address
- *
- * @v net_addr	ARP address
- * @ret string	"<ARP>"
- *
- * This operation is meaningless for the ARP protocol.
- */
-static const char * arp_ntoa ( const void *net_addr __unused ) {
-	return "<ARP>";
-}
-
-/** ARP protocol */
-struct net_protocol arp_protocol __net_protocol = {
-	.name = "ARP",
-	.net_proto = htons ( ETH_P_ARP ),
-	.rx = arp_rx,
-	.ntoa = arp_ntoa,
-};