/* * net/dccp/diag.c * * An implementation of the DCCP protocol * Arnaldo Carvalho de Melo <acme@mandriva.com> * * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. */ #include <linux/module.h> #include <linux/inet_diag.h> #include "ccid.h" #include "dccp.h" static void dccp_get_info(struct sock *sk, struct tcp_info *info) { struct dccp_sock *dp = dccp_sk(sk); const struct inet_connection_sock *icsk = inet_csk(sk); memset(info, 0, sizeof(*info)); info->tcpi_state = sk->sk_state; info->tcpi_retransmits = icsk->icsk_retransmits; info->tcpi_probes = icsk->icsk_probes_out; info->tcpi_backoff = icsk->icsk_backoff; info->tcpi_pmtu = icsk->icsk_pmtu_cookie; if (dp->dccps_hc_rx_ackvec != NULL) info->tcpi_options |= TCPI_OPT_SACK; if (dp->dccps_hc_rx_ccid != NULL) ccid_hc_rx_get_info(dp->dccps_hc_rx_ccid, sk, info); if (dp->dccps_hc_tx_ccid != NULL) ccid_hc_tx_get_info(dp->dccps_hc_tx_ccid, sk, info); } static void dccp_diag_get_info(struct sock *sk, struct inet_diag_msg *r, void *_info) { r->idiag_rqueue = r->idiag_wqueue = 0; if (_info != NULL) dccp_get_info(sk, _info); } static void dccp_diag_dump(struct sk_buff *skb, struct netlink_callback *cb, const struct inet_diag_req_v2 *r, struct nlattr *bc) { inet_diag_dump_icsk(&dccp_hashinfo, skb, cb, r, bc); } static int dccp_diag_dump_one(struct sk_buff *in_skb, const struct nlmsghdr *nlh, const struct inet_diag_req_v2 *req) { return inet_diag_dump_one_icsk(&dccp_hashinfo, in_skb, nlh, req); } static const struct inet_diag_handler dccp_diag_handler = { .dump = dccp_diag_dump, .dump_one = dccp_diag_dump_one, .idiag_get_info = dccp_diag_get_info, .idiag_type = IPPROTO_DCCP, .idiag_info_size = sizeof(struct tcp_info), }; static int __init dccp_diag_init(void) { return inet_diag_register(&dccp_diag_handler); } static void __exit dccp_diag_fini(void) { inet_diag_unregister(&dccp_diag_handler); } module_init(dccp_diag_init); module_exit(dccp_diag_fini); MODULE_LICENSE("GPL"); MODULE_AUTHOR("Arnaldo Carvalho de Melo <acme@mandriva.com>"); MODULE_DESCRIPTION("DCCP inet_diag handler"); MODULE_ALIAS_NET_PF_PROTO_TYPE(PF_NETLINK, NETLINK_SOCK_DIAG, 2-33 /* AF_INET - IPPROTO_DCCP */);