[linux-2.6-block.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 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));

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:
		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:
		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);

#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);
d366477a PE	18	};
d366477a PE	19
8dcf01fc SW	20	int sock_diag_register(const struct sock_diag_handler *h);
8dcf01fc SW	21	void sock_diag_unregister(const struct sock_diag_handler *h);
d366477a PE	22
	23	void sock_diag_register_inet_compat(int (fn)(struct sk_buff skb, struct nlmsghdr *nlh));
	24	void sock_diag_unregister_inet_compat(int (fn)(struct sk_buff skb, struct nlmsghdr *nlh));
	25
33cf7c90 ED	26	int sock_diag_check_cookie(struct sock sk, const __u32 cookie);
33cf7c90 ED	27	void sock_diag_save_cookie(struct sock sk, __u32 cookie);
f65c1b53	28
5d2e5f27	29	int sock_diag_put_meminfo(struct sock sk, struct sk_buff skb, int attr);
a53b72c8	30	int sock_diag_put_filterinfo(bool may_report_filterinfo, struct sock *sk,
e8d9612c	31	struct sk_buff *skb, int attrtype);
5d2e5f27	32
eb4cb008 CG	33	static inline
	34	enum sknetlink_groups sock_diag_destroy_group(const struct sock *sk)
	35	{
	36	switch (sk->sk_family) {
	37	case AF_INET:
	38	switch (sk->sk_protocol) {
	39	case IPPROTO_TCP:
	40	return SKNLGRP_INET_TCP_DESTROY;
	41	case IPPROTO_UDP:
	42	return SKNLGRP_INET_UDP_DESTROY;
	43	default:
	44	return SKNLGRP_NONE;
	45	}
	46	case AF_INET6:
	47	switch (sk->sk_protocol) {
	48	case IPPROTO_TCP:
	49	return SKNLGRP_INET6_TCP_DESTROY;
	50	case IPPROTO_UDP:
	51	return SKNLGRP_INET6_UDP_DESTROY;
	52	default:
	53	return SKNLGRP_NONE;
	54	}
	55	default:
	56	return SKNLGRP_NONE;
	57	}
	58	}
	59
	60	static inline
	61	bool sock_diag_has_destroy_listeners(const struct sock *sk)
	62	{
	63	const struct net *n = sock_net(sk);
	64	const enum sknetlink_groups group = sock_diag_destroy_group(sk);
	65
	66	return group != SKNLGRP_NONE && n->diag_nlsk &&
	67	netlink_has_listeners(n->diag_nlsk, group);
	68	}
	69	void sock_diag_broadcast_destroy(struct sock *sk);
	70
d366477a	71	#endif