[mirror_ubuntu-artful-kernel.git] / include / linux / sock_diag.h

#ifndef __SOCK_DIAG_H__
#define __SOCK_DIAG_H__

#include <linux/netlink.h>
#include <linux/user_namespace.h>
#include <net/net_namespace.h>
#include <net/sock.h>
#include <uapi/linux/sock_diag.h>

struct sk_buff;
struct nlmsghdr;
struct sock;

struct sock_diag_handler {
	__u8 family;
	int (*dump)(struct sk_buff *skb, struct nlmsghdr *nlh);
	int (*get_info)(struct sk_buff *skb, struct sock *sk);
	int (*destroy)(struct sk_buff *skb, struct nlmsghdr *nlh);
};

int sock_diag_register(const struct sock_diag_handler *h);
void sock_diag_unregister(const struct sock_diag_handler *h);

void sock_diag_register_inet_compat(int (*fn)(struct sk_buff *skb, struct nlmsghdr *nlh));
void sock_diag_unregister_inet_compat(int (*fn)(struct sk_buff *skb, struct nlmsghdr *nlh));

u64 sock_gen_cookie(struct sock *sk);
int sock_diag_check_cookie(struct sock *sk, const __u32 *cookie);
void sock_diag_save_cookie(struct sock *sk, __u32 *cookie);

int sock_diag_put_meminfo(struct sock *sk, struct sk_buff *skb, int attr);
int sock_diag_put_filterinfo(bool may_report_filterinfo, struct sock *sk,
			     struct sk_buff *skb, int attrtype);

static inline
enum sknetlink_groups sock_diag_destroy_group(const struct sock *sk)
{
	switch (sk->sk_family) {
	case AF_INET:
		if (sk->sk_type == SOCK_RAW)
			return SKNLGRP_NONE;

		switch (sk->sk_protocol) {
		case IPPROTO_TCP:
			return SKNLGRP_INET_TCP_DESTROY;
		case IPPROTO_UDP:
			return SKNLGRP_INET_UDP_DESTROY;
		default:
			return SKNLGRP_NONE;
		}
	case AF_INET6:
		if (sk->sk_type == SOCK_RAW)
			return SKNLGRP_NONE;

		switch (sk->sk_protocol) {
		case IPPROTO_TCP:
			return SKNLGRP_INET6_TCP_DESTROY;
		case IPPROTO_UDP:
			return SKNLGRP_INET6_UDP_DESTROY;
		default:
			return SKNLGRP_NONE;
		}
	default:
		return SKNLGRP_NONE;
	}
}

static inline
bool sock_diag_has_destroy_listeners(const struct sock *sk)
{
	const struct net *n = sock_net(sk);
	const enum sknetlink_groups group = sock_diag_destroy_group(sk);

	return group != SKNLGRP_NONE && n->diag_nlsk &&
		netlink_has_listeners(n->diag_nlsk, group);
}
void sock_diag_broadcast_destroy(struct sock *sk);

int sock_diag_destroy(struct sock *sk, int err);
#endif
Commit	Line	Data
d366477a PE	1	#ifndef __SOCK_DIAG_H__
d366477a PE	2	#define __SOCK_DIAG_H__
e7c466e5	3
eb4cb008	4	#include <linux/netlink.h>
e8d9612c	5	#include <linux/user_namespace.h>
eb4cb008 CG	6	#include <net/net_namespace.h>
eb4cb008 CG	7	#include <net/sock.h>
607ca46e	8	#include <uapi/linux/sock_diag.h>
e7c466e5	9
e6fe2371 PE	10	struct sk_buff;
e6fe2371 PE	11	struct nlmsghdr;
5d2e5f27	12	struct sock;
e6fe2371	13
d366477a PE	14	struct sock_diag_handler {
	15	__u8 family;
	16	int (dump)(struct sk_buff skb, struct nlmsghdr *nlh);
eb4cb008	17	int (get_info)(struct sk_buff skb, struct sock *sk);
64be0aed	18	int (destroy)(struct sk_buff skb, struct nlmsghdr *nlh);
d366477a PE	19	};
d366477a PE	20
8dcf01fc SW	21	int sock_diag_register(const struct sock_diag_handler *h);
8dcf01fc SW	22	void sock_diag_unregister(const struct sock_diag_handler *h);
d366477a PE	23
	24	void sock_diag_register_inet_compat(int (fn)(struct sk_buff skb, struct nlmsghdr *nlh));
	25	void sock_diag_unregister_inet_compat(int (fn)(struct sk_buff skb, struct nlmsghdr *nlh));
	26
91b8270f	27	u64 sock_gen_cookie(struct sock *sk);
33cf7c90 ED	28	int sock_diag_check_cookie(struct sock sk, const __u32 cookie);
33cf7c90 ED	29	void sock_diag_save_cookie(struct sock sk, __u32 cookie);
f65c1b53	30
5d2e5f27	31	int sock_diag_put_meminfo(struct sock sk, struct sk_buff skb, int attr);
a53b72c8	32	int sock_diag_put_filterinfo(bool may_report_filterinfo, struct sock *sk,
e8d9612c	33	struct sk_buff *skb, int attrtype);
5d2e5f27	34
eb4cb008 CG	35	static inline
	36	enum sknetlink_groups sock_diag_destroy_group(const struct sock *sk)
	37	{
	38	switch (sk->sk_family) {
	39	case AF_INET:
9a0fee2b WB	40	if (sk->sk_type == SOCK_RAW)
	41	return SKNLGRP_NONE;
	42
eb4cb008 CG	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:
9a0fee2b WB	52	if (sk->sk_type == SOCK_RAW)
	53	return SKNLGRP_NONE;
	54
eb4cb008 CG	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
	68	static inline
	69	bool 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	}
	77	void sock_diag_broadcast_destroy(struct sock *sk);
	78
64be0aed	79	int sock_diag_destroy(struct sock *sk, int err);
d366477a	80	#endif