tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1/*
2 * tcp_diag.c Module for monitoring TCP transport protocols sockets.
3 *
4 * Version: $Id: tcp_diag.c,v 1.3 2002/02/01 22:01:04 davem Exp $
5 *
6 * Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
7 *
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License
10 * as published by the Free Software Foundation; either version
11 * 2 of the License, or (at your option) any later version.
12 */
13
14#include <linux/config.h>
15
16#include <linux/module.h>
17#include <linux/inet_diag.h>
18
19#include <linux/tcp.h>
20
21#include <net/tcp.h>
22
23static void tcp_diag_get_info(struct sock *sk, struct inet_diag_msg *r,
24 void *_info)
25{
26 const struct tcp_sock *tp = tcp_sk(sk);
27 struct tcp_info *info = _info;
28
29 r->idiag_rqueue = tp->rcv_nxt - tp->copied_seq;
30 r->idiag_wqueue = tp->write_seq - tp->snd_una;
31 if (info != NULL)
32 tcp_get_info(sk, info);
33}
34
35static struct inet_diag_handler tcp_diag_handler = {
36 .idiag_hashinfo = &tcp_hashinfo,
37 .idiag_get_info = tcp_diag_get_info,
38 .idiag_type = TCPDIAG_GETSOCK,
39 .idiag_info_size = sizeof(struct tcp_info),
40};
41
42static int __init tcp_diag_init(void)
43{
44 return inet_diag_register(&tcp_diag_handler);
45}
46
47static void __exit tcp_diag_exit(void)
48{
49 inet_diag_unregister(&tcp_diag_handler);
50}
51
52module_init(tcp_diag_init);
53module_exit(tcp_diag_exit);
54MODULE_LICENSE("GPL");