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