code blob

code2.c

struct sock *__inet_lookup(tcp_hashinfo, skb, src_addr, src_port, dst_addr, dst_port)
{
    /* Convert dest_port# from network to host byte order */
    u16 hnum = ntohs(dst_port);

    /* First look for an established socket ... */
    sk = __inet_lookup_established(tcp_hashinfo, src_addr, src_port, dst_addr, hnum);
    if (sk)
        return sk;

    /* failing which, look for a LISTEN socket */
    return __inet_lookup_listener(tcp_hashinfo, skb, src_addr, src_port, dst_addr, hnum);
}