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Arnaldo Carvalho de Melo4f5736c2005-08-12 09:27:49 -03001/*
2 * net/dccp/diag.c
3 *
4 * An implementation of the DCCP protocol
5 * Arnaldo Carvalho de Melo <acme@mandriva.com>
6 *
7 * This program is free software; you can redistribute it and/or modify it
8 * under the terms of the GNU General Public License version 2 as
9 * published by the Free Software Foundation.
10 */
11
12#include <linux/config.h>
13
14#include <linux/module.h>
Arnaldo Carvalho de Meloa8c21902005-08-12 12:56:38 -030015#include <linux/inet_diag.h>
Arnaldo Carvalho de Melo4f5736c2005-08-12 09:27:49 -030016
Arnaldo Carvalho de Melo2babe1f2005-08-23 21:52:35 -070017#include "ccid.h"
Arnaldo Carvalho de Melo4f5736c2005-08-12 09:27:49 -030018#include "dccp.h"
19
Arnaldo Carvalho de Melo2babe1f2005-08-23 21:52:35 -070020static void dccp_get_info(struct sock *sk, struct tcp_info *info)
21{
22 struct dccp_sock *dp = dccp_sk(sk);
23 const struct inet_connection_sock *icsk = inet_csk(sk);
24
25 memset(info, 0, sizeof(*info));
26
27 info->tcpi_state = sk->sk_state;
28 info->tcpi_retransmits = icsk->icsk_retransmits;
29 info->tcpi_probes = icsk->icsk_probes_out;
30 info->tcpi_backoff = icsk->icsk_backoff;
31 info->tcpi_pmtu = dp->dccps_pmtu_cookie;
32
33 if (dp->dccps_options.dccpo_send_ack_vector)
34 info->tcpi_options |= TCPI_OPT_SACK;
35
36 ccid_hc_rx_get_info(dp->dccps_hc_rx_ccid, sk, info);
37 ccid_hc_tx_get_info(dp->dccps_hc_tx_ccid, sk, info);
38}
39
Arnaldo Carvalho de Melo73c1f4a2005-08-12 12:51:49 -030040static void dccp_diag_get_info(struct sock *sk, struct inet_diag_msg *r,
Arnaldo Carvalho de Melo4f5736c2005-08-12 09:27:49 -030041 void *_info)
42{
Arnaldo Carvalho de Melo73c1f4a2005-08-12 12:51:49 -030043 r->idiag_rqueue = r->idiag_wqueue = 0;
Arnaldo Carvalho de Melo2babe1f2005-08-23 21:52:35 -070044
45 if (_info != NULL)
46 dccp_get_info(sk, _info);
Arnaldo Carvalho de Melo4f5736c2005-08-12 09:27:49 -030047}
48
49static struct inet_diag_handler dccp_diag_handler = {
50 .idiag_hashinfo = &dccp_hashinfo,
51 .idiag_get_info = dccp_diag_get_info,
52 .idiag_type = DCCPDIAG_GETSOCK,
Arnaldo Carvalho de Melo2babe1f2005-08-23 21:52:35 -070053 .idiag_info_size = sizeof(struct tcp_info),
Arnaldo Carvalho de Melo4f5736c2005-08-12 09:27:49 -030054};
55
56static int __init dccp_diag_init(void)
57{
58 return inet_diag_register(&dccp_diag_handler);
59}
60
61static void __exit dccp_diag_fini(void)
62{
63 inet_diag_unregister(&dccp_diag_handler);
64}
65
66module_init(dccp_diag_init);
67module_exit(dccp_diag_fini);
68
69MODULE_LICENSE("GPL");
70MODULE_AUTHOR("Arnaldo Carvalho de Melo <acme@mandriva.com>");
71MODULE_DESCRIPTION("DCCP inet_diag handler");