FILE_LICENCE ( GPL2_OR_LATER );
#include <stdint.h>
+#include <stdlib.h>
#include <string.h>
#include <byteswap.h>
#include <errno.h>
#include <ipxe/if_arp.h>
#include <ipxe/iobuf.h>
#include <ipxe/netdevice.h>
+#include <ipxe/list.h>
+#include <ipxe/retry.h>
+#include <ipxe/timer.h>
+#include <ipxe/malloc.h>
#include <ipxe/arp.h>
/** @file
*
*/
+/** ARP minimum timeout */
+#define ARP_MIN_TIMEOUT ( TICKS_PER_SEC / 8 )
+
+/** ARP maximum timeout */
+#define ARP_MAX_TIMEOUT ( TICKS_PER_SEC * 3 )
+
/** An ARP cache entry */
struct arp_entry {
+ /** List of ARP cache entries */
+ struct list_head list;
+ /** Network device */
+ struct net_device *netdev;
/** 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];
+ /** Network-layer destination address */
+ uint8_t net_dest[MAX_NET_ADDR_LEN];
+ /** Network-layer source address */
+ uint8_t net_source[MAX_NET_ADDR_LEN];
+ /** Link-layer destination address */
+ uint8_t ll_dest[MAX_LL_ADDR_LEN];
+ /** Retransmission timer */
+ struct retry_timer timer;
+ /** Pending I/O buffers */
+ struct list_head tx_queue;
};
-/** Number of entries in the ARP cache
+/** The ARP cache */
+static LIST_HEAD ( arp_entries );
+
+struct net_protocol arp_protocol __net_protocol;
+
+static void arp_expired ( struct retry_timer *timer, int over );
+
+/**
+ * Create ARP cache entry
*
- * This is a global cache, covering all network interfaces,
- * network-layer protocols and link-layer protocols.
+ * @v netdev Network device
+ * @v net_protocol Network-layer protocol
+ * @v net_dest Destination network-layer address
+ * @v net_source Source network-layer address
+ * @ret arp ARP cache entry, or NULL if allocation failed
*/
-#define NUM_ARP_ENTRIES 4
+static struct arp_entry * arp_create ( struct net_device *netdev,
+ struct net_protocol *net_protocol,
+ const void *net_dest,
+ const void *net_source ) {
+ struct arp_entry *arp;
-/** The ARP cache */
-static struct arp_entry arp_table[NUM_ARP_ENTRIES];
-#define arp_table_end &arp_table[NUM_ARP_ENTRIES]
+ /* Allocate entry and add to cache */
+ arp = zalloc ( sizeof ( *arp ) );
+ if ( ! arp )
+ return NULL;
-static unsigned int next_new_arp_entry = 0;
+ /* Initialise entry and add to cache */
+ arp->netdev = netdev_get ( netdev );
+ arp->net_protocol = net_protocol;
+ memcpy ( arp->net_dest, net_dest,
+ net_protocol->net_addr_len );
+ memcpy ( arp->net_source, net_source,
+ net_protocol->net_addr_len );
+ timer_init ( &arp->timer, arp_expired, NULL );
+ arp->timer.min_timeout = ARP_MIN_TIMEOUT;
+ arp->timer.max_timeout = ARP_MAX_TIMEOUT;
+ INIT_LIST_HEAD ( &arp->tx_queue );
+ list_add ( &arp->list, &arp_entries );
-struct net_protocol arp_protocol __net_protocol;
+ /* Start timer running to trigger initial transmission */
+ start_timer_nodelay ( &arp->timer );
+
+ DBGC ( arp, "ARP %p %s %s %s created\n", arp, netdev->name,
+ net_protocol->name, net_protocol->ntoa ( net_dest ) );
+ return arp;
+}
/**
* Find entry in the ARP cache
*
- * @v ll_protocol Link-layer protocol
+ * @v netdev Network device
* @v net_protocol Network-layer protocol
- * @v net_addr Network-layer address
+ * @v net_dest Destination 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 ) {
+static struct arp_entry * arp_find ( struct net_device *netdev,
+ struct net_protocol *net_protocol,
+ const void *net_dest ) {
struct arp_entry *arp;
- for ( arp = arp_table ; arp < arp_table_end ; arp++ ) {
- if ( ( arp->ll_protocol == ll_protocol ) &&
+ list_for_each_entry ( arp, &arp_entries, list ) {
+ if ( ( arp->netdev == netdev ) &&
( arp->net_protocol == net_protocol ) &&
- ( memcmp ( arp->net_addr, net_addr,
- net_protocol->net_addr_len ) == 0 ) )
+ ( memcmp ( arp->net_dest, net_dest,
+ net_protocol->net_addr_len ) == 0 ) ) {
+
+ /* Move to start of cache */
+ list_del ( &arp->list );
+ list_add ( &arp->list, &arp_entries );
+
return arp;
+ }
}
return NULL;
}
/**
- * Look up media-specific link-layer address in the ARP cache
+ * Destroy ARP cache entry
*
+ * @v arp ARP cache entry
+ * @v rc Reason for destruction
+ */
+static void arp_destroy ( struct arp_entry *arp, int rc ) {
+ struct net_device *netdev = arp->netdev;
+ struct net_protocol *net_protocol = arp->net_protocol;
+ struct io_buffer *iobuf;
+ struct io_buffer *tmp;
+
+ /* Stop timer */
+ stop_timer ( &arp->timer );
+
+ /* Discard any outstanding I/O buffers */
+ list_for_each_entry_safe ( iobuf, tmp, &arp->tx_queue, list ) {
+ DBGC2 ( arp, "ARP %p %s %s %s discarding deferred packet: "
+ "%s\n", arp, netdev->name, net_protocol->name,
+ net_protocol->ntoa ( arp->net_dest ), strerror ( rc ) );
+ list_del ( &iobuf->list );
+ netdev_tx_err ( arp->netdev, iobuf, rc );
+ }
+
+ DBGC ( arp, "ARP %p %s %s %s destroyed: %s\n", arp, netdev->name,
+ net_protocol->name, net_protocol->ntoa ( arp->net_dest ),
+ strerror ( rc ) );
+
+ /* Drop reference to network device, remove from cache and free */
+ netdev_put ( arp->netdev );
+ list_del ( &arp->list );
+ free ( arp );
+}
+
+/**
+ * Test if ARP cache entry has a valid link-layer address
+ *
+ * @v arp ARP cache entry
+ * @ret resolved ARP cache entry is resolved
+ */
+static inline int arp_resolved ( struct arp_entry *arp ) {
+ return ( ! timer_running ( &arp->timer ) );
+}
+
+/**
+ * Transmit packet, determining link-layer address via ARP
+ *
+ * @v iobuf I/O buffer
* @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
+ * @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 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 ) {
+ struct arp_entry *arp;
+
+ /* Find or create ARP cache entry */
+ arp = arp_find ( netdev, net_protocol, net_dest );
+ if ( ! arp ) {
+ arp = arp_create ( netdev, net_protocol, net_dest,
+ net_source );
+ if ( ! arp )
+ return -ENOMEM;
+ }
+
+ /* If a link-layer address is available then transmit
+ * immediately, otherwise queue for later transmission.
+ */
+ if ( arp_resolved ( arp ) ) {
+ return net_tx ( iobuf, netdev, net_protocol, arp->ll_dest,
+ ll_source );
+ } else {
+ DBGC2 ( arp, "ARP %p %s %s %s deferring packet\n",
+ arp, netdev->name, net_protocol->name,
+ net_protocol->ntoa ( net_dest ) );
+ list_add_tail ( &iobuf->list, &arp->tx_queue );
+ return -EAGAIN;
+ }
+}
+
+/**
+ * Update ARP cache entry
*
- * 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.
+ * @v arp ARP cache entry
+ * @v ll_dest Destination link-layer address
+ */
+static void arp_update ( struct arp_entry *arp, const void *ll_dest ) {
+ struct net_device *netdev = arp->netdev;
+ struct ll_protocol *ll_protocol = netdev->ll_protocol;
+ struct net_protocol *net_protocol = arp->net_protocol;
+ struct io_buffer *iobuf;
+ struct io_buffer *tmp;
+ int rc;
+
+ DBGC ( arp, "ARP %p %s %s %s updated => %s\n", arp, netdev->name,
+ net_protocol->name, net_protocol->ntoa ( arp->net_dest ),
+ ll_protocol->ntoa ( ll_dest ) );
+
+ /* Fill in link-layer address */
+ memcpy ( arp->ll_dest, ll_dest, ll_protocol->ll_addr_len );
+
+ /* Stop retransmission timer */
+ stop_timer ( &arp->timer );
+
+ /* Transmit any packets in queue */
+ list_for_each_entry_safe ( iobuf, tmp, &arp->tx_queue, list ) {
+ DBGC2 ( arp, "ARP %p %s %s %s transmitting deferred packet\n",
+ arp, netdev->name, net_protocol->name,
+ net_protocol->ntoa ( arp->net_dest ) );
+ list_del ( &iobuf->list );
+ if ( ( rc = net_tx ( iobuf, netdev, net_protocol, ll_dest,
+ netdev->ll_addr ) ) != 0 ) {
+ DBGC ( arp, "ARP %p could not transmit deferred "
+ "packet: %s\n", arp, strerror ( rc ) );
+ /* Ignore error and continue */
+ }
+ }
+}
+
+/**
+ * Handle ARP timer expiry
*
- * 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.
+ * @v timer Retry timer
+ * @v fail Failure indicator
*/
-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 ) {
+static void arp_expired ( struct retry_timer *timer, int fail ) {
+ struct arp_entry *arp = container_of ( timer, struct arp_entry, timer );
+ struct net_device *netdev = arp->netdev;
struct ll_protocol *ll_protocol = netdev->ll_protocol;
- const struct arp_entry *arp;
+ struct net_protocol *net_protocol = arp->net_protocol;
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;
+ /* If we have failed, destroy the cache entry */
+ if ( fail ) {
+ arp_destroy ( arp, -ETIMEDOUT );
+ return;
}
- DBG ( "ARP cache miss: %s %s\n", net_protocol->name,
- net_protocol->ntoa ( dest_net_addr ) );
+
+ /* Restart the timer */
+ start_timer ( &arp->timer );
/* 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;
+ ( 2 * ( MAX_LL_ADDR_LEN + MAX_NET_ADDR_LEN ) ) );
+ if ( ! iobuf ) {
+ /* Leave timer running and try again later */
+ return;
+ }
iob_reserve ( iobuf, MAX_LL_HEADER_LEN );
/* Build up ARP 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 );
+ arp->net_source, 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 );
+ arp->net_dest, net_protocol->net_addr_len );
/* Transmit ARP request */
if ( ( rc = net_tx ( iobuf, netdev, &arp_protocol,
- netdev->ll_broadcast, netdev->ll_addr ) ) != 0 )
- return rc;
-
- return -ENOENT;
+ netdev->ll_broadcast, netdev->ll_addr ) ) != 0 ) {
+ DBGC ( arp, "ARP %p could not transmit request: %s\n",
+ arp, strerror ( rc ) );
+ return;
+ }
}
/**
* @v ll_source Link-layer source address
* @v flags Packet flags
* @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_dest __unused,
struct net_protocol *net_protocol;
struct ll_protocol *ll_protocol;
struct arp_entry *arp;
- int merge = 0;
+ int rc;
/* Identify network-layer and link-layer protocols */
arp_net_protocol = arp_find_protocol ( arphdr->ar_pro );
- if ( ! arp_net_protocol )
+ if ( ! arp_net_protocol ) {
+ rc = -EPROTONOSUPPORT;
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 ) )
+ ( arphdr->ar_pln != net_protocol->net_addr_len ) ) {
+ rc = -EINVAL;
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 ) );
+ arp = arp_find ( netdev, 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 ) );
+ arp_update ( arp, arp_sender_ha ( arphdr ) );
}
- /* See if we own the target protocol address */
- if ( arp_net_protocol->check ( netdev, arp_target_pa ( arphdr ) ) != 0)
+ /* If it's not a request, there's nothing more to do */
+ if ( arphdr->ar_op != htons ( ARPOP_REQUEST ) ) {
+ rc = 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 ) )
+ /* See if we own the target protocol address */
+ if ( arp_net_protocol->check ( netdev, arp_target_pa ( arphdr ) ) != 0){
+ rc = 0;
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 ) );
+ DBGC ( netdev, "ARP reply %s %s %s => %s %s\n",
+ netdev->name, 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 ), netdev->ll_addr );
+ if ( ( rc = net_tx ( iob_disown ( iobuf ), netdev, &arp_protocol,
+ arp_target_ha ( arphdr ),
+ netdev->ll_addr ) ) != 0 ) {
+ DBGC ( netdev, "ARP could not transmit reply via %s: %s\n",
+ netdev->name, strerror ( rc ) );
+ goto done;
+ }
+
+ /* Success */
+ rc = 0;
done:
free_iob ( iobuf );
- return 0;
+ return rc;
}
/**
.rx = arp_rx,
.ntoa = arp_ntoa,
};
+
+/**
+ * Update ARP cache on network device creation
+ *
+ * @v netdev Network device
+ */
+static int arp_probe ( struct net_device *netdev __unused ) {
+ /* Nothing to do */
+ return 0;
+}
+
+/**
+ * Update ARP cache on network device state change or removal
+ *
+ * @v netdev Network device
+ */
+static void arp_flush ( struct net_device *netdev ) {
+ struct arp_entry *arp;
+ struct arp_entry *tmp;
+
+ /* Remove all ARP cache entries when a network device is closed */
+ if ( ! netdev_is_open ( netdev ) ) {
+ list_for_each_entry_safe ( arp, tmp, &arp_entries, list )
+ arp_destroy ( arp, -ENODEV );
+ }
+}
+
+/** ARP driver (for net device notifications) */
+struct net_driver arp_net_driver __net_driver = {
+ .name = "ARP",
+ .probe = arp_probe,
+ .notify = arp_flush,
+ .remove = arp_flush,
+};
+
+/**
+ * Discard some cached ARP entries
+ *
+ * @ret discarded Number of cached items discarded
+ */
+static unsigned int arp_discard ( void ) {
+ struct arp_entry *arp;
+
+ /* Drop oldest cache entry, if any */
+ list_for_each_entry_reverse ( arp, &arp_entries, list ) {
+ arp_destroy ( arp, -ENOBUFS );
+ return 1;
+ }
+
+ return 0;
+}
+
+/** ARP cache discarder */
+struct cache_discarder arp_cache_discarder __cache_discarder = {
+ .discard = arp_discard,
+};
return tcpip_continue_chksum ( csum, &pshdr, sizeof ( pshdr ) );
}
-/**
- * Determine link-layer address
- *
- * @v dest IPv4 destination address
- * @v src IPv4 source address
- * @v netmask IPv4 subnet mask
- * @v netdev Network device
- * @v ll_dest Link-layer destination address buffer
- * @ret rc Return status code
- */
-static int ipv4_ll_addr ( struct in_addr dest, struct in_addr src,
- struct in_addr netmask, struct net_device *netdev,
- uint8_t *ll_dest ) {
- struct ll_protocol *ll_protocol = netdev->ll_protocol;
-
- if ( ( ( dest.s_addr ^ INADDR_BROADCAST ) & ~netmask.s_addr ) == 0 ) {
- /* Broadcast address */
- memcpy ( ll_dest, netdev->ll_broadcast,
- ll_protocol->ll_addr_len );
- return 0;
- } else if ( IN_MULTICAST ( ntohl ( dest.s_addr ) ) ) {
- return ll_protocol->mc_hash ( AF_INET, &dest, ll_dest );
- } else {
- /* Unicast address: resolve via ARP */
- return arp_resolve ( netdev, &ipv4_protocol, &dest,
- &src, ll_dest );
- }
-}
-
/**
* Transmit IP packet
*
struct ipv4_miniroute *miniroute;
struct in_addr next_hop;
struct in_addr netmask = { .s_addr = 0 };
- uint8_t ll_dest[MAX_LL_ADDR_LEN];
+ uint8_t ll_dest_buf[MAX_LL_ADDR_LEN];
+ const void *ll_dest;
int rc;
/* Fill up the IP header, except source address */
( ( netdev->rx_stats.bad & 0xf ) << 4 ) |
( ( netdev->rx_stats.good & 0xf ) << 0 ) );
- /* Determine link-layer destination address */
- if ( ( rc = ipv4_ll_addr ( next_hop, iphdr->src, netmask, netdev,
- ll_dest ) ) != 0 ) {
- DBGC ( sin_dest->sin_addr, "IPv4 has no link-layer address for "
- "%s: %s\n", inet_ntoa ( next_hop ), strerror ( rc ) );
- /* Record error for diagnosis */
- netdev_tx_err ( netdev, iob_disown ( iobuf ), rc );
- goto err;
- }
-
/* Fix up checksums */
if ( trans_csum )
*trans_csum = ipv4_pshdr_chksum ( iobuf, *trans_csum );
iphdr->protocol, ntohs ( iphdr->ident ),
ntohs ( iphdr->chksum ) );
- /* Hand off to link layer */
- if ( ( rc = net_tx ( iobuf, netdev, &ipv4_protocol, ll_dest,
- netdev->ll_addr ) ) != 0 ) {
- DBGC ( sin_dest->sin_addr, "IPv4 could not transmit packet "
- "via %s: %s\n", netdev->name, strerror ( rc ) );
- return rc;
+ /* Calculate link-layer destination address, if possible */
+ if ( ( ( next_hop.s_addr ^ INADDR_BROADCAST ) & ~netmask.s_addr ) == 0){
+ /* Broadcast address */
+ ll_dest = netdev->ll_broadcast;
+ } else if ( IN_MULTICAST ( ntohl ( next_hop.s_addr ) ) ) {
+ /* Multicast address */
+ if ( ( rc = netdev->ll_protocol->mc_hash ( AF_INET, &next_hop,
+ ll_dest_buf ) ) !=0){
+ DBGC ( sin_dest->sin_addr, "IPv4 could not hash "
+ "multicast %s: %s\n",
+ inet_ntoa ( next_hop ), strerror ( rc ) );
+ return rc;
+ }
+ ll_dest = ll_dest_buf;
+ } else {
+ /* Unicast address */
+ ll_dest = NULL;
+ }
+
+ /* Hand off to link layer (via ARP if applicable) */
+ if ( ll_dest ) {
+ if ( ( rc = net_tx ( iobuf, netdev, &ipv4_protocol, ll_dest,
+ netdev->ll_addr ) ) != 0 ) {
+ DBGC ( sin_dest->sin_addr, "IPv4 could not transmit "
+ "packet via %s: %s\n",
+ netdev->name, strerror ( rc ) );
+ return rc;
+ }
+ } else {
+ if ( ( rc = arp_tx ( iobuf, netdev, &ipv4_protocol, &next_hop,
+ &iphdr->src, netdev->ll_addr ) ) != 0 ) {
+ DBGC ( sin_dest->sin_addr, "IPv4 could not transmit "
+ "packet via %s: %s\n",
+ netdev->name, strerror ( rc ) );
+ return rc;
+ }
}
return 0;
projects / thirdparty / ipxe.git / commitdiff
