1/*
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
13#include <linux/module.h>
14#include <linux/inet_diag.h>
15
16#include "ccid.h"
17#include "dccp.h"
18
19static void dccp_get_info(struct sock *sk, struct tcp_info *info)
20{
21	struct dccp_sock *dp = dccp_sk(sk);
22	const struct inet_connection_sock *icsk = inet_csk(sk);
23
24	memset(info, 0, sizeof(*info));
25
26	info->tcpi_state	= sk->sk_state;
27	info->tcpi_retransmits	= icsk->icsk_retransmits;
28	info->tcpi_probes	= icsk->icsk_probes_out;
29	info->tcpi_backoff	= icsk->icsk_backoff;
30	info->tcpi_pmtu		= icsk->icsk_pmtu_cookie;
31
32	if (dccp_msk(sk)->dccpms_send_ack_vector)
33		info->tcpi_options |= TCPI_OPT_SACK;
34
35	ccid_hc_rx_get_info(dp->dccps_hc_rx_ccid, sk, info);
36	ccid_hc_tx_get_info(dp->dccps_hc_tx_ccid, sk, info);
37}
38
39static void dccp_diag_get_info(struct sock *sk, struct inet_diag_msg *r,
40			       void *_info)
41{
42	r->idiag_rqueue = r->idiag_wqueue = 0;
43
44	if (_info != NULL)
45		dccp_get_info(sk, _info);
46}
47
48static struct inet_diag_handler dccp_diag_handler = {
49	.idiag_hashinfo	 = &dccp_hashinfo,
50	.idiag_get_info	 = dccp_diag_get_info,
51	.idiag_type	 = DCCPDIAG_GETSOCK,
52	.idiag_info_size = sizeof(struct tcp_info),
53};
54
55static int __init dccp_diag_init(void)
56{
57	return inet_diag_register(&dccp_diag_handler);
58}
59
60static void __exit dccp_diag_fini(void)
61{
62	inet_diag_unregister(&dccp_diag_handler);
63}
64
65module_init(dccp_diag_init);
66module_exit(dccp_diag_fini);
67
68MODULE_LICENSE("GPL");
69MODULE_AUTHOR("Arnaldo Carvalho de Melo <acme@mandriva.com>");
70MODULE_DESCRIPTION("DCCP inet_diag handler");
71