diff options
| author | Michael Brown | 2014-03-04 13:54:21 +0100 |
|---|---|---|
| committer | Michael Brown | 2014-03-04 14:02:58 +0100 |
| commit | db67de6f31a062dc1995d4561be83cd51609d6c4 (patch) | |
| tree | 642ebb50e33c2a720d40769dd59010ce0d5b8e05 /src/net/ipv6.c | |
| parent | [prefix] Ignore PCI autoboot device location if set to 00:00.0 (diff) | |
| download | ipxe-db67de6f31a062dc1995d4561be83cd51609d6c4.tar.gz ipxe-db67de6f31a062dc1995d4561be83cd51609d6c4.tar.xz ipxe-db67de6f31a062dc1995d4561be83cd51609d6c4.zip | |
[tcpip] Provide tcpip_netdev() to determine the transmitting network device
Provide the function tcpip_netdev() to allow external code to
determine the transmitting network device for a given socket address.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Diffstat (limited to 'src/net/ipv6.c')
| -rw-r--r-- | src/net/ipv6.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/src/net/ipv6.c b/src/net/ipv6.c index 2802aef0..6f2e9477 100644 --- a/src/net/ipv6.c +++ b/src/net/ipv6.c @@ -322,6 +322,25 @@ static struct ipv6_miniroute * ipv6_route ( unsigned int scope_id, } /** + * Determine transmitting network device + * + * @v st_dest Destination network-layer address + * @ret netdev Transmitting network device, or NULL + */ +static struct net_device * ipv6_netdev ( struct sockaddr_tcpip *st_dest ) { + struct sockaddr_in6 *sin6_dest = ( ( struct sockaddr_in6 * ) st_dest ); + struct in6_addr *dest = &sin6_dest->sin6_addr; + struct ipv6_miniroute *miniroute; + + /* Find routing table entry */ + miniroute = ipv6_route ( sin6_dest->sin6_scope_id, &dest ); + if ( ! miniroute ) + return NULL; + + return miniroute->netdev; +} + +/** * Check that received options can be safely ignored * * @v iphdr IPv6 header @@ -970,6 +989,7 @@ struct tcpip_net_protocol ipv6_tcpip_protocol __tcpip_net_protocol = { .name = "IPv6", .sa_family = AF_INET6, .tx = ipv6_tx, + .netdev = ipv6_netdev, }; /** IPv6 socket address converter */ |