inet_diag.h

 1/* SPDX-License-Identifier: GPL-2.0 */
 2#ifndef _INET_DIAG_H_
 3#define _INET_DIAG_H_ 1
 4
 5#include <net/netlink.h>
 6#include <uapi/linux/inet_diag.h>
 7
 8struct inet_hashinfo;
 9
10struct inet_diag_handler {
11	struct module	*owner;
12	void		(*dump)(struct sk_buff *skb,
13				struct netlink_callback *cb,
14				const struct inet_diag_req_v2 *r);
15
16	int		(*dump_one)(struct netlink_callback *cb,
17				    const struct inet_diag_req_v2 *req);
18
19	void		(*idiag_get_info)(struct sock *sk,
20					  struct inet_diag_msg *r,
21					  void *info);
22
23	int		(*idiag_get_aux)(struct sock *sk,
24					 bool net_admin,
25					 struct sk_buff *skb);
26
27	int		(*destroy)(struct sk_buff *in_skb,
28				   const struct inet_diag_req_v2 *req);
29
30	__u16		idiag_type;
31	__u16		idiag_info_size;
32};
33
34struct bpf_sk_storage_diag;
35struct inet_diag_dump_data {
36	struct nlattr *req_nlas[__INET_DIAG_REQ_MAX];
37#define inet_diag_nla_bc req_nlas[INET_DIAG_REQ_BYTECODE]
38#define inet_diag_nla_bpf_stgs req_nlas[INET_DIAG_REQ_SK_BPF_STORAGES]
39
40	struct bpf_sk_storage_diag *bpf_stg_diag;
41	bool mark_needed;	/* INET_DIAG_BC_MARK_COND present. */
42#ifdef CONFIG_SOCK_CGROUP_DATA
43	bool cgroup_needed;	/* INET_DIAG_BC_CGROUP_COND present. */
44#endif
45	bool userlocks_needed;	/* INET_DIAG_BC_AUTO present. */
46};
47
48struct inet_connection_sock;
49int inet_sk_diag_fill(struct sock *sk, struct inet_connection_sock *icsk,
50		      struct sk_buff *skb, struct netlink_callback *cb,
51		      const struct inet_diag_req_v2 *req,
52		      u16 nlmsg_flags, bool net_admin);
53
54int inet_diag_bc_sk(const struct inet_diag_dump_data *cb_data, struct sock *sk);
55
56void inet_diag_msg_common_fill(struct inet_diag_msg *r, struct sock *sk);
57
58static inline size_t inet_diag_msg_attrs_size(void)
59{
60	return	  nla_total_size(1)  /* INET_DIAG_SHUTDOWN */
61		+ nla_total_size(1)  /* INET_DIAG_TOS */
62#if IS_ENABLED(CONFIG_IPV6)
63		+ nla_total_size(1)  /* INET_DIAG_TCLASS */
64		+ nla_total_size(1)  /* INET_DIAG_SKV6ONLY */
65#endif
66		+ nla_total_size(4)  /* INET_DIAG_MARK */
67		+ nla_total_size(4)  /* INET_DIAG_CLASS_ID */
68#ifdef CONFIG_SOCK_CGROUP_DATA
69		+ nla_total_size_64bit(sizeof(u64))  /* INET_DIAG_CGROUP_ID */
70#endif
71		+ nla_total_size(sizeof(struct inet_diag_sockopt))
72						     /* INET_DIAG_SOCKOPT */
73		;
74}
75int inet_diag_msg_attrs_fill(struct sock *sk, struct sk_buff *skb,
76			     struct inet_diag_msg *r, int ext,
77			     struct user_namespace *user_ns, bool net_admin);
78
79extern int  inet_diag_register(const struct inet_diag_handler *handler);
80extern void inet_diag_unregister(const struct inet_diag_handler *handler);
81#endif /* _INET_DIAG_H_ */