cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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diag.c (2169B)


      1// SPDX-License-Identifier: GPL-2.0-only
      2/*
      3 *  net/dccp/diag.c
      4 *
      5 *  An implementation of the DCCP protocol
      6 *  Arnaldo Carvalho de Melo <acme@mandriva.com>
      7 */
      8
      9
     10#include <linux/module.h>
     11#include <linux/inet_diag.h>
     12
     13#include "ccid.h"
     14#include "dccp.h"
     15
     16static 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;
     27	info->tcpi_pmtu		= icsk->icsk_pmtu_cookie;
     28
     29	if (dp->dccps_hc_rx_ackvec != NULL)
     30		info->tcpi_options |= TCPI_OPT_SACK;
     31
     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);
     37}
     38
     39static void dccp_diag_get_info(struct sock *sk, struct inet_diag_msg *r,
     40			       void *_info)
     41{
     42	r->idiag_rqueue = r->idiag_wqueue = 0;
     43
     44	if (_info != NULL)
     45		dccp_get_info(sk, _info);
     46}
     47
     48static void dccp_diag_dump(struct sk_buff *skb, struct netlink_callback *cb,
     49			   const struct inet_diag_req_v2 *r)
     50{
     51	inet_diag_dump_icsk(&dccp_hashinfo, skb, cb, r);
     52}
     53
     54static int dccp_diag_dump_one(struct netlink_callback *cb,
     55			      const struct inet_diag_req_v2 *req)
     56{
     57	return inet_diag_dump_one_icsk(&dccp_hashinfo, cb, req);
     58}
     59
     60static const struct inet_diag_handler dccp_diag_handler = {
     61	.dump		 = dccp_diag_dump,
     62	.dump_one	 = dccp_diag_dump_one,
     63	.idiag_get_info	 = dccp_diag_get_info,
     64	.idiag_type	 = IPPROTO_DCCP,
     65	.idiag_info_size = sizeof(struct tcp_info),
     66};
     67
     68static int __init dccp_diag_init(void)
     69{
     70	return inet_diag_register(&dccp_diag_handler);
     71}
     72
     73static void __exit dccp_diag_fini(void)
     74{
     75	inet_diag_unregister(&dccp_diag_handler);
     76}
     77
     78module_init(dccp_diag_init);
     79module_exit(dccp_diag_fini);
     80
     81MODULE_LICENSE("GPL");
     82MODULE_AUTHOR("Arnaldo Carvalho de Melo <acme@mandriva.com>");
     83MODULE_DESCRIPTION("DCCP inet_diag handler");
     84MODULE_ALIAS_NET_PF_PROTO_TYPE(PF_NETLINK, NETLINK_SOCK_DIAG, 2-33 /* AF_INET - IPPROTO_DCCP */);