This reverts "Merge branch 'dccp' of git://eden-feed.erg.abdn.ac.uk/dccp_exp"
[linux-2.6.git] / net / dccp / diag.c
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
19 static 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
39 static 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
48 static 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
55 static int __init dccp_diag_init(void)
56 {
57         return inet_diag_register(&dccp_diag_handler);
58 }
59
60 static void __exit dccp_diag_fini(void)
61 {
62         inet_diag_unregister(&dccp_diag_handler);
63 }
64
65 module_init(dccp_diag_init);
66 module_exit(dccp_diag_fini);
67
68 MODULE_LICENSE("GPL");
69 MODULE_AUTHOR("Arnaldo Carvalho de Melo <acme@mandriva.com>");
70 MODULE_DESCRIPTION("DCCP inet_diag handler");
71 MODULE_ALIAS_NET_PF_PROTO_TYPE(PF_NETLINK, NETLINK_INET_DIAG, DCCPDIAG_GETSOCK);