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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sock_diag.h (2370B)

      1/* SPDX-License-Identifier: GPL-2.0 */
      2#ifndef __SOCK_DIAG_H__
      3#define __SOCK_DIAG_H__
      4
      5#include <linux/netlink.h>
      6#include <linux/user_namespace.h>
      7#include <net/net_namespace.h>
      8#include <net/sock.h>
      9#include <uapi/linux/sock_diag.h>
     10
     11struct sk_buff;
     12struct nlmsghdr;
     13struct sock;
     14
     15struct sock_diag_handler {
     16	__u8 family;
     17	int (*dump)(struct sk_buff *skb, struct nlmsghdr *nlh);
     18	int (*get_info)(struct sk_buff *skb, struct sock *sk);
     19	int (*destroy)(struct sk_buff *skb, struct nlmsghdr *nlh);
     20};
     21
     22int sock_diag_register(const struct sock_diag_handler *h);
     23void sock_diag_unregister(const struct sock_diag_handler *h);
     24
     25void sock_diag_register_inet_compat(int (*fn)(struct sk_buff *skb, struct nlmsghdr *nlh));
     26void sock_diag_unregister_inet_compat(int (*fn)(struct sk_buff *skb, struct nlmsghdr *nlh));
     27
     28u64 __sock_gen_cookie(struct sock *sk);
     29
     30static inline u64 sock_gen_cookie(struct sock *sk)
     31{
     32	u64 cookie;
     33
     34	preempt_disable();
     35	cookie = __sock_gen_cookie(sk);
     36	preempt_enable();
     37
     38	return cookie;
     39}
     40
     41int sock_diag_check_cookie(struct sock *sk, const __u32 *cookie);
     42void sock_diag_save_cookie(struct sock *sk, __u32 *cookie);
     43
     44int sock_diag_put_meminfo(struct sock *sk, struct sk_buff *skb, int attr);
     45int sock_diag_put_filterinfo(bool may_report_filterinfo, struct sock *sk,
     46			     struct sk_buff *skb, int attrtype);
     47
     48static inline
     49enum sknetlink_groups sock_diag_destroy_group(const struct sock *sk)
     50{
     51	switch (sk->sk_family) {
     52	case AF_INET:
     53		if (sk->sk_type == SOCK_RAW)
     54			return SKNLGRP_NONE;
     55
     56		switch (sk->sk_protocol) {
     57		case IPPROTO_TCP:
     58			return SKNLGRP_INET_TCP_DESTROY;
     59		case IPPROTO_UDP:
     60			return SKNLGRP_INET_UDP_DESTROY;
     61		default:
     62			return SKNLGRP_NONE;
     63		}
     64	case AF_INET6:
     65		if (sk->sk_type == SOCK_RAW)
     66			return SKNLGRP_NONE;
     67
     68		switch (sk->sk_protocol) {
     69		case IPPROTO_TCP:
     70			return SKNLGRP_INET6_TCP_DESTROY;
     71		case IPPROTO_UDP:
     72			return SKNLGRP_INET6_UDP_DESTROY;
     73		default:
     74			return SKNLGRP_NONE;
     75		}
     76	default:
     77		return SKNLGRP_NONE;
     78	}
     79}
     80
     81static inline
     82bool sock_diag_has_destroy_listeners(const struct sock *sk)
     83{
     84	const struct net *n = sock_net(sk);
     85	const enum sknetlink_groups group = sock_diag_destroy_group(sk);
     86
     87	return group != SKNLGRP_NONE && n->diag_nlsk &&
     88		netlink_has_listeners(n->diag_nlsk, group);
     89}
     90void sock_diag_broadcast_destroy(struct sock *sk);
     91
     92int sock_diag_destroy(struct sock *sk, int err);
     93#endif