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84 lines
2.1 KiB
84 lines
2.1 KiB
// SPDX-License-Identifier: GPL-2.0-only |
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/* |
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* net/dccp/diag.c |
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* |
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* An implementation of the DCCP protocol |
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* Arnaldo Carvalho de Melo <[email protected]> |
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*/ |
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#include <linux/module.h> |
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#include <linux/inet_diag.h> |
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#include "ccid.h" |
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#include "dccp.h" |
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static void dccp_get_info(struct sock *sk, struct tcp_info *info) |
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{ |
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struct dccp_sock *dp = dccp_sk(sk); |
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const struct inet_connection_sock *icsk = inet_csk(sk); |
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memset(info, 0, sizeof(*info)); |
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info->tcpi_state = sk->sk_state; |
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info->tcpi_retransmits = icsk->icsk_retransmits; |
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info->tcpi_probes = icsk->icsk_probes_out; |
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info->tcpi_backoff = icsk->icsk_backoff; |
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info->tcpi_pmtu = icsk->icsk_pmtu_cookie; |
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if (dp->dccps_hc_rx_ackvec != NULL) |
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info->tcpi_options |= TCPI_OPT_SACK; |
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if (dp->dccps_hc_rx_ccid != NULL) |
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ccid_hc_rx_get_info(dp->dccps_hc_rx_ccid, sk, info); |
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if (dp->dccps_hc_tx_ccid != NULL) |
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ccid_hc_tx_get_info(dp->dccps_hc_tx_ccid, sk, info); |
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} |
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static void dccp_diag_get_info(struct sock *sk, struct inet_diag_msg *r, |
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void *_info) |
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{ |
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r->idiag_rqueue = r->idiag_wqueue = 0; |
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if (_info != NULL) |
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dccp_get_info(sk, _info); |
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} |
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static void dccp_diag_dump(struct sk_buff *skb, struct netlink_callback *cb, |
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const struct inet_diag_req_v2 *r) |
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{ |
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inet_diag_dump_icsk(&dccp_hashinfo, skb, cb, r); |
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} |
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static int dccp_diag_dump_one(struct netlink_callback *cb, |
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const struct inet_diag_req_v2 *req) |
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{ |
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return inet_diag_dump_one_icsk(&dccp_hashinfo, cb, req); |
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} |
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static const struct inet_diag_handler dccp_diag_handler = { |
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.dump = dccp_diag_dump, |
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.dump_one = dccp_diag_dump_one, |
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.idiag_get_info = dccp_diag_get_info, |
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.idiag_type = IPPROTO_DCCP, |
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.idiag_info_size = sizeof(struct tcp_info), |
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}; |
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static int __init dccp_diag_init(void) |
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{ |
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return inet_diag_register(&dccp_diag_handler); |
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} |
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static void __exit dccp_diag_fini(void) |
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{ |
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inet_diag_unregister(&dccp_diag_handler); |
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} |
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module_init(dccp_diag_init); |
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module_exit(dccp_diag_fini); |
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MODULE_LICENSE("GPL"); |
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MODULE_AUTHOR("Arnaldo Carvalho de Melo <[email protected]>"); |
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MODULE_DESCRIPTION("DCCP inet_diag handler"); |
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MODULE_ALIAS_NET_PF_PROTO_TYPE(PF_NETLINK, NETLINK_SOCK_DIAG, 2-33 /* AF_INET - IPPROTO_DCCP */);
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