projects / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| d2912cb1 | 1 | // SPDX-License-Identifier: GPL-2.0-only |
| 4f5736c4 ACM |
2 | /* |
| 3 | * net/dccp/diag.c | |
| 4 | * | |
| 5 | * An implementation of the DCCP protocol | |
| 6 | * Arnaldo Carvalho de Melo <[email protected]> | |
| 4f5736c4 ACM |
7 | */ |
| 8 | ||
| 4f5736c4 ACM |
9 | |
| 10 | #include <linux/module.h> | |
| a8c2190e | 11 | #include <linux/inet_diag.h> |
| 4f5736c4 | 12 | |
| 2babe1f6 | 13 | #include "ccid.h" |
| 4f5736c4 ACM |
14 | #include "dccp.h" |
| 15 | ||
| 2babe1f6 ACM |
16 | static void dccp_get_info(struct sock *sk, struct tcp_info *info) |
| 17 | { | |
| 18 | struct dccp_sock *dp = dccp_sk(sk); | |
| 19 | const struct inet_connection_sock *icsk = inet_csk(sk); | |
| 20 | ||
| 21 | memset(info, 0, sizeof(*info)); | |
| 22 | ||
| 23 | info->tcpi_state = sk->sk_state; | |
| 24 | info->tcpi_retransmits = icsk->icsk_retransmits; | |
| 25 | info->tcpi_probes = icsk->icsk_probes_out; | |
| 26 | info->tcpi_backoff = icsk->icsk_backoff; | |
| d83d8461 | 27 | info->tcpi_pmtu = icsk->icsk_pmtu_cookie; |
| 2babe1f6 | 28 | |
| 6fdd34d4 | 29 | if (dp->dccps_hc_rx_ackvec != NULL) |
| 2babe1f6 ACM |
30 | info->tcpi_options |= TCPI_OPT_SACK; |
| 31 | ||
| a693722a ACM |
32 | if (dp->dccps_hc_rx_ccid != NULL) |
| 33 | ccid_hc_rx_get_info(dp->dccps_hc_rx_ccid, sk, info); | |
| 34 | ||
| 35 | if (dp->dccps_hc_tx_ccid != NULL) | |
| 36 | ccid_hc_tx_get_info(dp->dccps_hc_tx_ccid, sk, info); | |
| 2babe1f6 ACM |
37 | } |
| 38 | ||
| 73c1f4a0 | 39 | static void dccp_diag_get_info(struct sock *sk, struct inet_diag_msg *r, |
| 4f5736c4 ACM |
40 | void *_info) |
| 41 | { | |
| 73c1f4a0 | 42 | r->idiag_rqueue = r->idiag_wqueue = 0; |
| 2babe1f6 ACM |
43 | |
| 44 | if (_info != NULL) | |
| 45 | dccp_get_info(sk, _info); | |
| 4f5736c4 ACM |
46 | } |
| 47 | ||
| 1942c518 | 48 | static void dccp_diag_dump(struct sk_buff *skb, struct netlink_callback *cb, |
| 0df6d328 | 49 | const struct inet_diag_req_v2 *r) |
| 1942c518 | 50 | { |
| 0df6d328 | 51 | inet_diag_dump_icsk(&dccp_hashinfo, skb, cb, r); |
| 1942c518 PE |
52 | } |
| 53 | ||
| 5682d393 | 54 | static int dccp_diag_dump_one(struct netlink_callback *cb, |
| 34160ea3 | 55 | const struct inet_diag_req_v2 *req) |
| 1942c518 | 56 | { |
| 5682d393 | 57 | return inet_diag_dump_one_icsk(&dccp_hashinfo, cb, req); |
| 1942c518 PE |
58 | } |
| 59 | ||
| a7a0d6a8 | 60 | static const struct inet_diag_handler dccp_diag_handler = { |
| db591469 | 61 | .owner = THIS_MODULE, |
| 1942c518 PE |
62 | .dump = dccp_diag_dump, |
| 63 | .dump_one = dccp_diag_dump_one, | |
| 4f5736c4 | 64 | .idiag_get_info = dccp_diag_get_info, |
| f13c95f0 | 65 | .idiag_type = IPPROTO_DCCP, |
| 3fd22af8 | 66 | .idiag_info_size = sizeof(struct tcp_info), |
| 4f5736c4 ACM |
67 | }; |
| 68 | ||
| 69 | static int __init dccp_diag_init(void) | |
| 70 | { | |
| 71 | return inet_diag_register(&dccp_diag_handler); | |
| 72 | } | |
| 73 | ||
| 74 | static void __exit dccp_diag_fini(void) | |
| 75 | { | |
| 76 | inet_diag_unregister(&dccp_diag_handler); | |
| 77 | } | |
| 78 | ||
| 79 | module_init(dccp_diag_init); | |
| 80 | module_exit(dccp_diag_fini); | |
| 81 | ||
| 82 | MODULE_LICENSE("GPL"); | |
| 83 | MODULE_AUTHOR("Arnaldo Carvalho de Melo <[email protected]>"); | |
| 84 | MODULE_DESCRIPTION("DCCP inet_diag handler"); | |
| aec8dc62 | 85 | MODULE_ALIAS_NET_PF_PROTO_TYPE(PF_NETLINK, NETLINK_SOCK_DIAG, 2-33 /* AF_INET - IPPROTO_DCCP */); |