From ace9429bb58fd418f0c81d4c2835699bddf6bde6 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Thu, 11 Apr 2024 10:27:49 +0200 Subject: Adding upstream version 6.6.15. Signed-off-by: Daniel Baumann --- net/dccp/diag.c | 84 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 84 insertions(+) create mode 100644 net/dccp/diag.c (limited to 'net/dccp/diag.c') diff --git a/net/dccp/diag.c b/net/dccp/diag.c new file mode 100644 index 0000000000..8a82c5a2c5 --- /dev/null +++ b/net/dccp/diag.c @@ -0,0 +1,84 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * net/dccp/diag.c + * + * An implementation of the DCCP protocol + * Arnaldo Carvalho de Melo + */ + + +#include +#include + +#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) +{ + inet_diag_dump_icsk(&dccp_hashinfo, skb, cb, r); +} + +static int dccp_diag_dump_one(struct netlink_callback *cb, + const struct inet_diag_req_v2 *req) +{ + return inet_diag_dump_one_icsk(&dccp_hashinfo, cb, 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 "); +MODULE_DESCRIPTION("DCCP inet_diag handler"); +MODULE_ALIAS_NET_PF_PROTO_TYPE(PF_NETLINK, NETLINK_SOCK_DIAG, 2-33 /* AF_INET - IPPROTO_DCCP */); -- cgit v1.2.3