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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
Arnaldo Carvalho de Melo4f5736c2005-08-12 09:27:49 -030012
13#include <linux/module.h>
Arnaldo Carvalho de Meloa8c21902005-08-12 12:56:38 -030014#include <linux/inet_diag.h>
Arnaldo Carvalho de Melo4f5736c2005-08-12 09:27:49 -030015
Arnaldo Carvalho de Melo2babe1f2005-08-23 21:52:35 -070016#include "ccid.h"
Arnaldo Carvalho de Melo4f5736c2005-08-12 09:27:49 -030017#include "dccp.h"
18
Arnaldo Carvalho de Melo2babe1f2005-08-23 21:52:35 -070019static 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;
Arnaldo Carvalho de Melod83d8462005-12-13 23:26:10 -080030 info->tcpi_pmtu = icsk->icsk_pmtu_cookie;
Arnaldo Carvalho de Melo2babe1f2005-08-23 21:52:35 -070031
Arnaldo Carvalho de Meloa4bf3902006-03-20 22:50:58 -080032 if (dccp_msk(sk)->dccpms_send_ack_vector)
Arnaldo Carvalho de Melo2babe1f2005-08-23 21:52:35 -070033 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
Arnaldo Carvalho de Melo73c1f4a2005-08-12 12:51:49 -030039static void dccp_diag_get_info(struct sock *sk, struct inet_diag_msg *r,
Arnaldo Carvalho de Melo4f5736c2005-08-12 09:27:49 -030040 void *_info)
41{
Arnaldo Carvalho de Melo73c1f4a2005-08-12 12:51:49 -030042 r->idiag_rqueue = r->idiag_wqueue = 0;
Arnaldo Carvalho de Melo2babe1f2005-08-23 21:52:35 -070043
44 if (_info != NULL)
45 dccp_get_info(sk, _info);
Arnaldo Carvalho de Melo4f5736c2005-08-12 09:27:49 -030046}
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,
Arnaldo Carvalho de Melo2babe1f2005-08-23 21:52:35 -070052 .idiag_info_size = sizeof(struct tcp_info),
Arnaldo Carvalho de Melo4f5736c2005-08-12 09:27:49 -030053};
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");
Jean Delvare305e1e92007-10-21 16:44:04 -070071MODULE_ALIAS_NET_PF_PROTO_TYPE(PF_NETLINK, NETLINK_INET_DIAG, DCCPDIAG_GETSOCK);