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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");
71MODULE_ALIAS_NET_PF_PROTO_TYPE(PF_NETLINK, NETLINK_INET_DIAG, DCCPDIAG_GETSOCK);
72