From db67de6f31a062dc1995d4561be83cd51609d6c4 Mon Sep 17 00:00:00 2001 From: Michael Brown Date: Tue, 4 Mar 2014 12:54:21 +0000 Subject: [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 --- src/include/ipxe/tcpip.h | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'src/include/ipxe/tcpip.h') diff --git a/src/include/ipxe/tcpip.h b/src/include/ipxe/tcpip.h index f5ef4f043..d28689a10 100644 --- a/src/include/ipxe/tcpip.h +++ b/src/include/ipxe/tcpip.h @@ -116,6 +116,13 @@ struct tcpip_net_protocol { struct sockaddr_tcpip *st_dest, struct net_device *netdev, uint16_t *trans_csum ); + /** + * Determine transmitting network device + * + * @v st_dest Destination address + * @ret netdev Network device, or NULL + */ + struct net_device * ( * netdev ) ( struct sockaddr_tcpip *dest ); }; /** TCP/IP transport-layer protocol table */ @@ -140,6 +147,7 @@ extern int tcpip_tx ( struct io_buffer *iobuf, struct tcpip_protocol *tcpip, struct sockaddr_tcpip *st_dest, struct net_device *netdev, uint16_t *trans_csum ); +extern struct net_device * tcpip_netdev ( struct sockaddr_tcpip *st_dest ); extern uint16_t generic_tcpip_continue_chksum ( uint16_t partial, const void *data, size_t len ); extern uint16_t tcpip_chksum ( const void *data, size_t len ); -- cgit