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-rw-r--r--src/net/ipv4.c2
-rw-r--r--src/net/ipv6.c12
-rw-r--r--src/net/ndp.c4
-rw-r--r--src/net/netdevice.c31
-rw-r--r--src/net/peerdisc.c2
-rw-r--r--src/net/udp/dhcpv6.c2
6 files changed, 28 insertions, 25 deletions
diff --git a/src/net/ipv4.c b/src/net/ipv4.c
index b9ce5e7..b91fa2a 100644
--- a/src/net/ipv4.c
+++ b/src/net/ipv4.c
@@ -163,7 +163,7 @@ static struct ipv4_miniroute * ipv4_route ( unsigned int scope_id,
/* If destination is non-global, and the scope ID
* matches this network device, then use this route.
*/
- if ( miniroute->netdev->index == scope_id )
+ if ( miniroute->netdev->scope_id == scope_id )
return miniroute;
} else {
diff --git a/src/net/ipv6.c b/src/net/ipv6.c
index 901203c..ef5e51d 100644
--- a/src/net/ipv6.c
+++ b/src/net/ipv6.c
@@ -330,7 +330,7 @@ struct ipv6_miniroute * ipv6_route ( unsigned int scope_id,
/* Skip entries with a non-matching scope ID, if
* destination specifies a scope ID.
*/
- if ( scope_id && ( miniroute->netdev->index != scope_id ) )
+ if ( scope_id && ( miniroute->netdev->scope_id != scope_id ) )
continue;
/* Skip entries that are out of scope */
@@ -789,12 +789,12 @@ static int ipv6_rx ( struct io_buffer *iobuf, struct net_device *netdev,
src.sin6.sin6_family = AF_INET6;
memcpy ( &src.sin6.sin6_addr, &iphdr->src,
sizeof ( src.sin6.sin6_addr ) );
- src.sin6.sin6_scope_id = netdev->index;
+ src.sin6.sin6_scope_id = netdev->scope_id;
memset ( &dest, 0, sizeof ( dest ) );
dest.sin6.sin6_family = AF_INET6;
memcpy ( &dest.sin6.sin6_addr, &iphdr->dest,
sizeof ( dest.sin6.sin6_addr ) );
- dest.sin6.sin6_scope_id = netdev->index;
+ dest.sin6.sin6_scope_id = netdev->scope_id;
iob_pull ( iobuf, hdrlen );
pshdr_csum = ipv6_pshdr_chksum ( iphdr, iob_len ( iobuf ),
next_header, TCPIP_EMPTY_CSUM );
@@ -957,7 +957,7 @@ static const char * ipv6_sock_ntoa ( struct sockaddr *sa ) {
/* Identify network device, if applicable */
if ( IN6_IS_ADDR_LINKLOCAL ( in ) || IN6_IS_ADDR_MULTICAST ( in ) ) {
- netdev = find_netdev_by_index ( sin6->sin6_scope_id );
+ netdev = find_netdev_by_scope_id ( sin6->sin6_scope_id );
netdev_name = ( netdev ? netdev->name : "UNKNOWN" );
} else {
netdev_name = NULL;
@@ -1020,7 +1020,7 @@ static int ipv6_sock_aton ( const char *string, struct sockaddr *sa ) {
rc = -ENODEV;
goto err_find_netdev;
}
- sin6->sin6_scope_id = netdev->index;
+ sin6->sin6_scope_id = netdev->scope_id;
} else if ( IN6_IS_ADDR_LINKLOCAL ( &in ) ||
IN6_IS_ADDR_MULTICAST ( &in ) ) {
@@ -1031,7 +1031,7 @@ static int ipv6_sock_aton ( const char *string, struct sockaddr *sa ) {
*/
netdev = last_opened_netdev();
if ( netdev )
- sin6->sin6_scope_id = netdev->index;
+ sin6->sin6_scope_id = netdev->scope_id;
}
/* Copy IPv6 address portion to socket address */
diff --git a/src/net/ndp.c b/src/net/ndp.c
index c8e8eba..373a936 100644
--- a/src/net/ndp.c
+++ b/src/net/ndp.c
@@ -140,7 +140,7 @@ static int ndp_tx_request ( struct net_device *netdev,
/* Construct multicast destination address */
memset ( &sin6_dest, 0, sizeof ( sin6_dest ) );
sin6_dest.sin6_family = AF_INET6;
- sin6_dest.sin6_scope_id = netdev->index;
+ sin6_dest.sin6_scope_id = netdev->scope_id;
ipv6_solicited_node ( &sin6_dest.sin6_addr, net_dest );
/* Construct neighbour header */
@@ -177,7 +177,7 @@ static int ndp_tx_router_solicitation ( struct net_device *netdev ) {
/* Construct multicast destination address */
memset ( &sin6_dest, 0, sizeof ( sin6_dest ) );
sin6_dest.sin6_family = AF_INET6;
- sin6_dest.sin6_scope_id = netdev->index;
+ sin6_dest.sin6_scope_id = netdev->scope_id;
ipv6_all_routers ( &sin6_dest.sin6_addr );
/* Construct router solicitation */
diff --git a/src/net/netdevice.c b/src/net/netdevice.c
index 51d1831..597c622 100644
--- a/src/net/netdevice.c
+++ b/src/net/netdevice.c
@@ -55,9 +55,6 @@ struct list_head net_devices = LIST_HEAD_INIT ( net_devices );
/** List of open network devices, in reverse order of opening */
static struct list_head open_net_devices = LIST_HEAD_INIT ( open_net_devices );
-/** Network device index */
-static unsigned int netdev_index = 0;
-
/** Network polling profiler */
static struct profiler net_poll_profiler __profiler = { .name = "net.poll" };
@@ -723,6 +720,7 @@ int register_netdev ( struct net_device *netdev ) {
struct ll_protocol *ll_protocol = netdev->ll_protocol;
struct net_driver *driver;
struct net_device *duplicate;
+ unsigned int i;
uint32_t seed;
int rc;
@@ -757,12 +755,21 @@ int register_netdev ( struct net_device *netdev ) {
goto err_duplicate;
}
- /* Record device index and create device name */
+ /* Assign a unique device name, if not already set */
if ( netdev->name[0] == '\0' ) {
- snprintf ( netdev->name, sizeof ( netdev->name ), "net%d",
- netdev_index );
+ for ( i = 0 ; ; i++ ) {
+ snprintf ( netdev->name, sizeof ( netdev->name ),
+ "net%d", i );
+ if ( find_netdev ( netdev->name ) == NULL )
+ break;
+ }
+ }
+
+ /* Assign a unique non-zero scope ID */
+ for ( netdev->scope_id = 1 ; ; netdev->scope_id++ ) {
+ if ( find_netdev_by_scope_id ( netdev->scope_id ) == NULL )
+ break;
}
- netdev->index = ++netdev_index;
/* Use least significant bits of the link-layer address to
* improve the randomness of the (non-cryptographic) random
@@ -916,10 +923,6 @@ void unregister_netdev ( struct net_device *netdev ) {
DBGC ( netdev, "NETDEV %s unregistered\n", netdev->name );
list_del ( &netdev->list );
netdev_put ( netdev );
-
- /* Reset network device index if no devices remain */
- if ( list_empty ( &net_devices ) )
- netdev_index = 0;
}
/** Enable or disable interrupts
@@ -962,17 +965,17 @@ struct net_device * find_netdev ( const char *name ) {
}
/**
- * Get network device by index
+ * Get network device by scope ID
*
* @v index Network device index
* @ret netdev Network device, or NULL
*/
-struct net_device * find_netdev_by_index ( unsigned int index ) {
+struct net_device * find_netdev_by_scope_id ( unsigned int scope_id ) {
struct net_device *netdev;
/* Identify network device by index */
list_for_each_entry ( netdev, &net_devices, list ) {
- if ( netdev->index == index )
+ if ( netdev->scope_id == scope_id )
return netdev;
}
diff --git a/src/net/peerdisc.c b/src/net/peerdisc.c
index d7e0d29..86ff94a 100644
--- a/src/net/peerdisc.c
+++ b/src/net/peerdisc.c
@@ -189,7 +189,7 @@ static void peerdisc_socket_tx ( const char *uuid, const char *id ) {
/* Skip unopened network devices */
if ( ! netdev_is_open ( netdev ) )
continue;
- address.st.st_scope_id = netdev->index;
+ address.st.st_scope_id = netdev->scope_id;
/* Discard request (for test purposes) if applicable */
if ( inject_fault ( PEERDISC_DISCARD_RATE ) )
diff --git a/src/net/udp/dhcpv6.c b/src/net/udp/dhcpv6.c
index 253032e..28c6f7b 100644
--- a/src/net/udp/dhcpv6.c
+++ b/src/net/udp/dhcpv6.c
@@ -955,7 +955,7 @@ int start_dhcpv6 ( struct interface *job, struct net_device *netdev,
addresses.client.sin6.sin6_port = htons ( DHCPV6_CLIENT_PORT );
addresses.server.sin6.sin6_family = AF_INET6;
ipv6_all_dhcp_relay_and_servers ( &addresses.server.sin6.sin6_addr );
- addresses.server.sin6.sin6_scope_id = netdev->index;
+ addresses.server.sin6.sin6_scope_id = netdev->scope_id;
addresses.server.sin6.sin6_port = htons ( DHCPV6_SERVER_PORT );
/* Construct client DUID from system UUID */
generated by cgit v1.1 at 2024-10-12 23:55:30 +0000