1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef __SOCK_DIAG_H__
3 #define __SOCK_DIAG_H__
5 #include <linux/netlink.h>
6 #include <linux/user_namespace.h>
7 #include <net/net_namespace.h>
9 #include <uapi/linux/sock_diag.h>
15 struct sock_diag_handler {
18 int (*dump)(struct sk_buff *skb, struct nlmsghdr *nlh);
19 int (*get_info)(struct sk_buff *skb, struct sock *sk);
20 int (*destroy)(struct sk_buff *skb, struct nlmsghdr *nlh);
23 int sock_diag_register(const struct sock_diag_handler *h);
24 void sock_diag_unregister(const struct sock_diag_handler *h);
26 struct sock_diag_inet_compat {
28 int (*fn)(struct sk_buff *skb, struct nlmsghdr *nlh);
31 void sock_diag_register_inet_compat(const struct sock_diag_inet_compat *ptr);
32 void sock_diag_unregister_inet_compat(const struct sock_diag_inet_compat *ptr);
34 u64 __sock_gen_cookie(struct sock *sk);
36 static inline u64 sock_gen_cookie(struct sock *sk)
41 cookie = __sock_gen_cookie(sk);
47 int sock_diag_check_cookie(struct sock *sk, const __u32 *cookie);
48 void sock_diag_save_cookie(struct sock *sk, __u32 *cookie);
50 int sock_diag_put_meminfo(struct sock *sk, struct sk_buff *skb, int attr);
51 int sock_diag_put_filterinfo(bool may_report_filterinfo, struct sock *sk,
52 struct sk_buff *skb, int attrtype);
55 enum sknetlink_groups sock_diag_destroy_group(const struct sock *sk)
57 switch (sk->sk_family) {
59 if (sk->sk_type == SOCK_RAW)
62 switch (sk->sk_protocol) {
64 return SKNLGRP_INET_TCP_DESTROY;
66 return SKNLGRP_INET_UDP_DESTROY;
71 if (sk->sk_type == SOCK_RAW)
74 switch (sk->sk_protocol) {
76 return SKNLGRP_INET6_TCP_DESTROY;
78 return SKNLGRP_INET6_UDP_DESTROY;
88 bool sock_diag_has_destroy_listeners(const struct sock *sk)
90 const struct net *n = sock_net(sk);
91 const enum sknetlink_groups group = sock_diag_destroy_group(sk);
93 return group != SKNLGRP_NONE && n->diag_nlsk &&
94 netlink_has_listeners(n->diag_nlsk, group);
96 void sock_diag_broadcast_destroy(struct sock *sk);
98 int sock_diag_destroy(struct sock *sk, int err);