Hi, First, I apologize for posting on the netdev forum. Majordomo did not list any other network related mailing list.
Is there a way to identify the underlying network interface from an instance of struct sock? I realize that the socket is abstract and shouldn't/doesn't necessarily depend on the underlying interface, but say, with TCP, where the connection is endpoint oriented, shouldn't this mean that the socket maintains a reference to the interface to which it is associated? I tried dev = dev_get_by_index(sock_net(sk), skb->skb_iif); and dev = skb->dev; but in both cases, dev was NULL. I'm trying to reference the underlying interface to determine whether the conditions present in that interface are acceptable for transmission. -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
