| | 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 (dp->dccps_hc_rx_ackvec != NULL) |
| | 33 | info->tcpi_options |= TCPI_OPT_SACK; |
| | 34 | |
| | 35 | if (dp->dccps_hc_rx_ccid != NULL) |
| | 36 | ccid_hc_rx_get_info(dp->dccps_hc_rx_ccid, sk, info); |
| | 37 | |
| | 38 | if (dp->dccps_hc_tx_ccid != NULL) |
| | 39 | ccid_hc_tx_get_info(dp->dccps_hc_tx_ccid, sk, info); |
| | 40 | } |
| | 41 | |
| | 42 | static void dccp_diag_get_info(struct sock *sk, struct inet_diag_msg *r, |
| | 43 | void *_info) |
| | 44 | { |
| | 45 | r->idiag_rqueue = r->idiag_wqueue = 0; |
| | 46 | |
| | 47 | if (_info != NULL) |
| | 48 | dccp_get_info(sk, _info); |
| | 49 | } |
| | 50 | |
| | 51 | static void dccp_diag_dump(struct sk_buff *skb, struct netlink_callback *cb, |
| | 52 | const struct inet_diag_req_v2 *r, struct nlattr *bc) |
| | 53 | { |
| | 54 | inet_diag_dump_icsk(&dccp_hashinfo, skb, cb, r, bc); |
| | 55 | } |
| | 56 | |
| | 57 | static int dccp_diag_dump_one(struct sk_buff *in_skb, |
| | 58 | const struct nlmsghdr *nlh, |
| | 59 | const struct inet_diag_req_v2 *req) |
| | 60 | { |
| | 61 | return inet_diag_dump_one_icsk(&dccp_hashinfo, in_skb, nlh, req); |
| | 62 | } |
| | 63 | |
| | 64 | static const struct inet_diag_handler dccp_diag_handler = { |
| | 65 | .dump = dccp_diag_dump, |
| | 66 | .dump_one = dccp_diag_dump_one, |
| | 67 | .idiag_get_info = dccp_diag_get_info, |
| | 68 | .idiag_type = IPPROTO_DCCP, |
| | 69 | .idiag_info_size = sizeof(struct tcp_info), |
| | 70 | }; |
| | 71 | |
| | 72 | static int __init dccp_diag_init(void) |
| | 73 | { |
| | 74 | return inet_diag_register(&dccp_diag_handler); |
| | 75 | } |
| | 76 | |
| | 77 | static void __exit dccp_diag_fini(void) |
| | 78 | { |
| | 79 | inet_diag_unregister(&dccp_diag_handler); |
| | 80 | } |
| | 81 | |
| | 82 | module_init(dccp_diag_init); |
| | 83 | module_exit(dccp_diag_fini); |
| | 84 | |
| | 85 | MODULE_LICENSE("GPL"); |
| | 86 | MODULE_AUTHOR("Arnaldo Carvalho de Melo <acme@mandriva.com>"); |
| | 87 | MODULE_DESCRIPTION("DCCP inet_diag handler"); |
| | 88 | MODULE_ALIAS_NET_PF_PROTO_TYPE(PF_NETLINK, NETLINK_SOCK_DIAG, 2-33 /* AF_INET - IPPROTO_DCCP */); |
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