Subversion Repositories or1k_soc_on_altera_embedded_dev_kit

/*

 * tcp_diag.c   Module for monitoring TCP transport protocols sockets.

 *

 * Version:     $Id: tcp_diag.c,v 1.3 2002/02/01 22:01:04 davem Exp $

 *

 * Authors:     Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>

 *

 *      This program is free software; you can redistribute it and/or

 *      modify it under the terms of the GNU General Public License

 *      as published by the Free Software Foundation; either version

 *      2 of the License, or (at your option) any later version.

 */

#include <linux/module.h>

#include <linux/inet_diag.h>

#include <linux/tcp.h>

#include <net/tcp.h>

static void tcp_diag_get_info(struct sock *sk, struct inet_diag_msg *r,

                              void *_info)

{

        const struct tcp_sock *tp = tcp_sk(sk);

        struct tcp_info *info = _info;

        if (sk->sk_state == TCP_LISTEN) {

                r->idiag_rqueue = sk->sk_ack_backlog;

                r->idiag_wqueue = sk->sk_max_ack_backlog;

        } else {

                r->idiag_rqueue = tp->rcv_nxt - tp->copied_seq;

                r->idiag_wqueue = tp->write_seq - tp->snd_una;

        }

        if (info != NULL)

                tcp_get_info(sk, info);

}

static struct inet_diag_handler tcp_diag_handler = {

        .idiag_hashinfo  = &tcp_hashinfo,

        .idiag_get_info  = tcp_diag_get_info,

        .idiag_type      = TCPDIAG_GETSOCK,

        .idiag_info_size = sizeof(struct tcp_info),

};

static int __init tcp_diag_init(void)

{

        return inet_diag_register(&tcp_diag_handler);

}

static void __exit tcp_diag_exit(void)

{

        inet_diag_unregister(&tcp_diag_handler);

}

module_init(tcp_diag_init);

module_exit(tcp_diag_exit);

MODULE_LICENSE("GPL");

MODULE_ALIAS_NET_PF_PROTO_TYPE(PF_NETLINK, NETLINK_INET_DIAG, TCPDIAG_GETSOCK);