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17b085ea ACM |
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 | ||
23 | static 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 | ||
35 | static 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 | ||
42 | static int __init tcp_diag_init(void) | |
43 | { | |
44 | return inet_diag_register(&tcp_diag_handler); | |
45 | } | |
46 | ||
47 | static void __exit tcp_diag_exit(void) | |
48 | { | |
49 | inet_diag_unregister(&tcp_diag_handler); | |
50 | } | |
51 | ||
52 | module_init(tcp_diag_init); | |
53 | module_exit(tcp_diag_exit); | |
54 | MODULE_LICENSE("GPL"); |