1 files changed, 0 insertions, 432 deletions

diff --git a/qemu/roms/ipxe/src/net/neighbour.c b/qemu/roms/ipxe/src/net/neighbour.c
deleted file mode 100644
index 7f66d9992..000000000
--- a/qemu/roms/ipxe/src/net/neighbour.c
+++ /dev/null
@@ -1,432 +0,0 @@
-/*
- * Copyright (C) 2013 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., 51 Franklin Street, Fifth Floor, Boston, MA
- * 02110-1301, USA.
- *
- * You can also choose to distribute this program under the terms of
- * the Unmodified Binary Distribution Licence (as given in the file
- * COPYING.UBDL), provided that you have satisfied its requirements.
- */
-
-FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
-
-#include <stdint.h>
-#include <stdlib.h>
-#include <string.h>
-#include <errno.h>
-#include <ipxe/iobuf.h>
-#include <ipxe/retry.h>
-#include <ipxe/timer.h>
-#include <ipxe/malloc.h>
-#include <ipxe/neighbour.h>
-
-/** @file
- *
- * Neighbour discovery
- *
- * This file implements the abstract functions of neighbour discovery,
- * independent of the underlying network protocol (e.g. ARP or NDP).
- *
- */
-
-/** Neighbour discovery minimum timeout */
-#define NEIGHBOUR_MIN_TIMEOUT ( TICKS_PER_SEC / 8 )
-
-/** Neighbour discovery maximum timeout */
-#define NEIGHBOUR_MAX_TIMEOUT ( TICKS_PER_SEC * 3 )
-
-/** The neighbour cache */
-struct list_head neighbours = LIST_HEAD_INIT ( neighbours );
-
-static void neighbour_expired ( struct retry_timer *timer, int over );
-
-/**
- * Free neighbour cache entry
- *
- * @v refcnt		Reference count
- */
-static void neighbour_free ( struct refcnt *refcnt ) {
-	struct neighbour *neighbour =
-		container_of ( refcnt, struct neighbour, refcnt );
-
-	/* Sanity check */
-	assert ( list_empty ( &neighbour->tx_queue ) );
-
-	/* Drop reference to network device */
-	netdev_put ( neighbour->netdev );
-
-	/* Free neighbour */
-	free ( neighbour );
-}
-
-/**
- * Create neighbour cache entry
- *
- * @v netdev		Network device
- * @v net_protocol	Network-layer protocol
- * @v net_dest		Destination network-layer address
- * @ret neighbour	Neighbour cache entry, or NULL if allocation failed
- */
-static struct neighbour * neighbour_create ( struct net_device *netdev,
-					     struct net_protocol *net_protocol,
-					     const void *net_dest ) {
-	struct neighbour *neighbour;
-
-	/* Allocate and initialise entry */
-	neighbour = zalloc ( sizeof ( *neighbour ) );
-	if ( ! neighbour )
-		return NULL;
-	ref_init ( &neighbour->refcnt, neighbour_free );
-	neighbour->netdev = netdev_get ( netdev );
-	neighbour->net_protocol = net_protocol;
-	memcpy ( neighbour->net_dest, net_dest,
-		 net_protocol->net_addr_len );
-	timer_init ( &neighbour->timer, neighbour_expired, &neighbour->refcnt );
-	set_timer_limits ( &neighbour->timer, NEIGHBOUR_MIN_TIMEOUT,
-			   NEIGHBOUR_MAX_TIMEOUT );
-	INIT_LIST_HEAD ( &neighbour->tx_queue );
-
-	/* Transfer ownership to cache */
-	list_add ( &neighbour->list, &neighbours );
-
-	DBGC ( neighbour, "NEIGHBOUR %s %s %s created\n", netdev->name,
-	       net_protocol->name, net_protocol->ntoa ( net_dest ) );
-	return neighbour;
-}
-
-/**
- * Find neighbour cache entry
- *
- * @v netdev		Network device
- * @v net_protocol	Network-layer protocol
- * @v net_dest		Destination network-layer address
- * @ret neighbour	Neighbour cache entry, or NULL if not found
- */
-static struct neighbour * neighbour_find ( struct net_device *netdev,
-					   struct net_protocol *net_protocol,
-					   const void *net_dest ) {
-	struct neighbour *neighbour;
-
-	list_for_each_entry ( neighbour, &neighbours, list ) {
-		if ( ( neighbour->netdev == netdev ) &&
-		     ( neighbour->net_protocol == net_protocol ) &&
-		     ( memcmp ( neighbour->net_dest, net_dest,
-				net_protocol->net_addr_len ) == 0 ) ) {
-
-			/* Move to start of cache */
-			list_del ( &neighbour->list );
-			list_add ( &neighbour->list, &neighbours );
-
-			return neighbour;
-		}
-	}
-	return NULL;
-}
-
-/**
- * Start neighbour discovery
- *
- * @v neighbour		Neighbour cache entry
- * @v discovery		Neighbour discovery protocol
- * @v net_source	Source network-layer address
- */
-static void neighbour_discover ( struct neighbour *neighbour,
-				 struct neighbour_discovery *discovery,
-				 const void *net_source ) {
-	struct net_device *netdev = neighbour->netdev;
-	struct net_protocol *net_protocol = neighbour->net_protocol;
-
-	/* Record discovery protocol and source network-layer address */
-	neighbour->discovery = discovery;
-	memcpy ( neighbour->net_source, net_source,
-		 net_protocol->net_addr_len );
-
-	/* Start timer to trigger neighbour discovery */
-	start_timer_nodelay ( &neighbour->timer );
-
-	DBGC ( neighbour, "NEIGHBOUR %s %s %s discovering via %s\n",
-	       netdev->name, net_protocol->name,
-	       net_protocol->ntoa ( neighbour->net_dest ),
-	       neighbour->discovery->name );
-}
-
-/**
- * Complete neighbour discovery
- *
- * @v neighbour		Neighbour cache entry
- * @v ll_dest		Destination link-layer address
- */
-static void neighbour_discovered ( struct neighbour *neighbour,
-				   const void *ll_dest ) {
-	struct net_device *netdev = neighbour->netdev;
-	struct ll_protocol *ll_protocol = netdev->ll_protocol;
-	struct net_protocol *net_protocol = neighbour->net_protocol;
-	struct io_buffer *iobuf;
-	int rc;
-
-	/* Fill in link-layer address */
-	memcpy ( neighbour->ll_dest, ll_dest, ll_protocol->ll_addr_len );
-	DBGC ( neighbour, "NEIGHBOUR %s %s %s is %s %s\n", netdev->name,
-	       net_protocol->name, net_protocol->ntoa ( neighbour->net_dest ),
-	       ll_protocol->name, ll_protocol->ntoa ( neighbour->ll_dest ) );
-
-	/* Stop retransmission timer */
-	stop_timer ( &neighbour->timer );
-
-	/* Transmit any packets in queue.  Take out a temporary
-	 * reference on the entry to prevent it from going out of
-	 * scope during the call to net_tx().
-	 */
-	ref_get ( &neighbour->refcnt );
-	while ( ( iobuf = list_first_entry ( &neighbour->tx_queue,
-					     struct io_buffer, list )) != NULL){
-		DBGC2 ( neighbour, "NEIGHBOUR %s %s %s transmitting deferred "
-			"packet\n", netdev->name, net_protocol->name,
-			net_protocol->ntoa ( neighbour->net_dest ) );
-		list_del ( &iobuf->list );
-		if ( ( rc = net_tx ( iobuf, netdev, net_protocol, ll_dest,
-				     netdev->ll_addr ) ) != 0 ) {
-			DBGC ( neighbour, "NEIGHBOUR %s %s %s could not "
-			       "transmit deferred packet: %s\n",
-			       netdev->name, net_protocol->name,
-			       net_protocol->ntoa ( neighbour->net_dest ),
-			       strerror ( rc ) );
-			/* Ignore error and continue */
-		}
-	}
-	ref_put ( &neighbour->refcnt );
-}
-
-/**
- * Destroy neighbour cache entry
- *
- * @v neighbour		Neighbour cache entry
- * @v rc		Reason for destruction
- */
-static void neighbour_destroy ( struct neighbour *neighbour, int rc ) {
-	struct net_device *netdev = neighbour->netdev;
-	struct net_protocol *net_protocol = neighbour->net_protocol;
-	struct io_buffer *iobuf;
-
-	/* Take ownership from cache */
-	list_del ( &neighbour->list );
-
-	/* Stop timer */
-	stop_timer ( &neighbour->timer );
-
-	/* Discard any outstanding I/O buffers */
-	while ( ( iobuf = list_first_entry ( &neighbour->tx_queue,
-					     struct io_buffer, list )) != NULL){
-		DBGC2 ( neighbour, "NEIGHBOUR %s %s %s discarding deferred "
-			"packet: %s\n", netdev->name, net_protocol->name,
-			net_protocol->ntoa ( neighbour->net_dest ),
-			strerror ( rc ) );
-		list_del ( &iobuf->list );
-		netdev_tx_err ( neighbour->netdev, iobuf, rc );
-	}
-
-	DBGC ( neighbour, "NEIGHBOUR %s %s %s destroyed: %s\n", netdev->name,
-	       net_protocol->name, net_protocol->ntoa ( neighbour->net_dest ),
-	       strerror ( rc ) );
-
-	/* Drop remaining reference */
-	ref_put ( &neighbour->refcnt );
-}
-
-/**
- * Handle neighbour timer expiry
- *
- * @v timer		Retry timer
- * @v fail		Failure indicator
- */
-static void neighbour_expired ( struct retry_timer *timer, int fail ) {
-	struct neighbour *neighbour =
-		container_of ( timer, struct neighbour, timer );
-	struct net_device *netdev = neighbour->netdev;
-	struct net_protocol *net_protocol = neighbour->net_protocol;
-	struct neighbour_discovery *discovery =
-		neighbour->discovery;
-	const void *net_dest = neighbour->net_dest;
-	const void *net_source = neighbour->net_source;
-	int rc;
-
-	/* If we have failed, destroy the cache entry */
-	if ( fail ) {
-		neighbour_destroy ( neighbour, -ETIMEDOUT );
-		return;
-	}
-
-	/* Restart the timer */
-	start_timer ( &neighbour->timer );
-
-	/* Transmit neighbour request */
-	if ( ( rc = discovery->tx_request ( netdev, net_protocol, net_dest,
-					    net_source ) ) != 0 ) {
-		DBGC ( neighbour, "NEIGHBOUR %s %s %s could not transmit %s "
-		       "request: %s\n", netdev->name, net_protocol->name,
-		       net_protocol->ntoa ( neighbour->net_dest ),
-		       neighbour->discovery->name, strerror ( rc ) );
-		/* Retransmit when timer expires */
-		return;
-	}
-}
-
-/**
- * Transmit packet, determining link-layer address via neighbour discovery
- *
- * @v iobuf		I/O buffer
- * @v netdev		Network device
- * @v discovery		Neighbour discovery protocol
- * @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
- */
-int neighbour_tx ( struct io_buffer *iobuf, struct net_device *netdev,
-		   struct net_protocol *net_protocol, const void *net_dest,
-		   struct neighbour_discovery *discovery,
-		   const void *net_source, const void *ll_source ) {
-	struct neighbour *neighbour;
-
-	/* Find or create neighbour cache entry */
-	neighbour = neighbour_find ( netdev, net_protocol, net_dest );
-	if ( ! neighbour ) {
-		neighbour = neighbour_create ( netdev, net_protocol, net_dest );
-		if ( ! neighbour )
-			return -ENOMEM;
-		neighbour_discover ( neighbour, discovery, net_source );
-	}
-
-	/* If a link-layer address is available then transmit
-	 * immediately, otherwise queue for later transmission.
-	 */
-	if ( neighbour_has_ll_dest ( neighbour ) ) {
-		return net_tx ( iobuf, netdev, net_protocol, neighbour->ll_dest,
-				ll_source );
-	} else {
-		DBGC2 ( neighbour, "NEIGHBOUR %s %s %s deferring packet\n",
-			netdev->name, net_protocol->name,
-			net_protocol->ntoa ( net_dest ) );
-		list_add_tail ( &iobuf->list, &neighbour->tx_queue );
-		return 0;
-	}
-}
-
-/**
- * Update existing neighbour cache entry
- *
- * @v netdev		Network device
- * @v net_protocol	Network-layer protocol
- * @v net_dest		Destination network-layer address
- * @v ll_dest		Destination link-layer address
- * @ret rc		Return status code
- */
-int neighbour_update ( struct net_device *netdev,
-		       struct net_protocol *net_protocol,
-		       const void *net_dest, const void *ll_dest ) {
-	struct neighbour *neighbour;
-
-	/* Find neighbour cache entry */
-	neighbour = neighbour_find ( netdev, net_protocol, net_dest );
-	if ( ! neighbour )
-		return -ENOENT;
-
-	/* Set destination address */
-	neighbour_discovered ( neighbour, ll_dest );
-
-	return 0;
-}
-
-/**
- * Define neighbour cache entry
- *
- * @v netdev		Network device
- * @v net_protocol	Network-layer protocol
- * @v net_dest		Destination network-layer address
- * @v ll_dest		Destination link-layer address, if known
- * @ret rc		Return status code
- */
-int neighbour_define ( struct net_device *netdev,
-		       struct net_protocol *net_protocol,
-		       const void *net_dest, const void *ll_dest ) {
-	struct neighbour *neighbour;
-
-	/* Find or create neighbour cache entry */
-	neighbour = neighbour_find ( netdev, net_protocol, net_dest );
-	if ( ! neighbour ) {
-		neighbour = neighbour_create ( netdev, net_protocol, net_dest );
-		if ( ! neighbour )
-			return -ENOMEM;
-	}
-
-	/* Set destination address */
-	neighbour_discovered ( neighbour, ll_dest );
-
-	return 0;
-}
-
-/**
- * Update neighbour cache on network device state change or removal
- *
- * @v netdev		Network device
- */
-static void neighbour_flush ( struct net_device *netdev ) {
-	struct neighbour *neighbour;
-	struct neighbour *tmp;
-
-	/* Remove all neighbour cache entries when a network device is closed */
-	if ( ! netdev_is_open ( netdev ) ) {
-		list_for_each_entry_safe ( neighbour, tmp, &neighbours, list )
-			neighbour_destroy ( neighbour, -ENODEV );
-	}
-}
-
-/** Neighbour driver (for net device notifications) */
-struct net_driver neighbour_net_driver __net_driver = {
-	.name = "Neighbour",
-	.notify = neighbour_flush,
-	.remove = neighbour_flush,
-};
-
-/**
- * Discard some cached neighbour entries
- *
- * @ret discarded	Number of cached items discarded
- */
-static unsigned int neighbour_discard ( void ) {
-	struct neighbour *neighbour;
-
-	/* Drop oldest cache entry, if any */
-	neighbour = list_last_entry ( &neighbours, struct neighbour, list );
-	if ( neighbour ) {
-		neighbour_destroy ( neighbour, -ENOBUFS );
-		return 1;
-	} else {
-		return 0;
-	}
-}
-
-/**
- * Neighbour cache discarder
- *
- * Neighbour cache entries are deemed to have a high replacement cost,
- * since flushing an active neighbour cache entry midway through a TCP
- * transfer will cause substantial disruption.
- */
-struct cache_discarder neighbour_discarder __cache_discarder (CACHE_EXPENSIVE)={
-	.discard = neighbour_discard,
-};