[deliverable/linux.git] / net / netlink / af_netlink.h

#ifndef _AF_NETLINK_H
#define _AF_NETLINK_H

#include <net/sock.h>

#define NLGRPSZ(x)	(ALIGN(x, sizeof(unsigned long) * 8) / 8)
#define NLGRPLONGS(x)	(NLGRPSZ(x)/sizeof(unsigned long))

struct netlink_sock {
	/* struct sock has to be the first member of netlink_sock */
	struct sock		sk;
	u32			portid;
	u32			dst_portid;
	u32			dst_group;
	u32			flags;
	u32			subscriptions;
	u32			ngroups;
	unsigned long		*groups;
	unsigned long		state;
	wait_queue_head_t	wait;
	struct netlink_callback	*cb;
	struct mutex		*cb_mutex;
	struct mutex		cb_def_mutex;
	void			(*netlink_rcv)(struct sk_buff *skb);
	void			(*netlink_bind)(int group);
	struct module		*module;
};

static inline struct netlink_sock *nlk_sk(struct sock *sk)
{
	return container_of(sk, struct netlink_sock, sk);
}

struct nl_portid_hash {
	struct hlist_head	*table;
	unsigned long		rehash_time;

	unsigned int		mask;
	unsigned int		shift;

	unsigned int		entries;
	unsigned int		max_shift;

	u32			rnd;
};

struct netlink_table {
	struct nl_portid_hash	hash;
	struct hlist_head	mc_list;
	struct listeners __rcu	*listeners;
	unsigned int		flags;
	unsigned int		groups;
	struct mutex		*cb_mutex;
	struct module		*module;
	void			(*bind)(int group);
	int			registered;
};

extern struct netlink_table *nl_table;
extern rwlock_t nl_table_lock;

#endif
Commit	Line	Data
0f29c768 AV	1	#ifndef _AF_NETLINK_H
	2	#define _AF_NETLINK_H
	3
	4	#include <net/sock.h>
	5
	6	#define NLGRPSZ(x) (ALIGN(x, sizeof(unsigned long) * 8) / 8)
	7	#define NLGRPLONGS(x) (NLGRPSZ(x)/sizeof(unsigned long))
	8
	9	struct netlink_sock {
	10	/* struct sock has to be the first member of netlink_sock */
	11	struct sock sk;
	12	u32 portid;
	13	u32 dst_portid;
	14	u32 dst_group;
	15	u32 flags;
	16	u32 subscriptions;
	17	u32 ngroups;
	18	unsigned long *groups;
	19	unsigned long state;
	20	wait_queue_head_t wait;
	21	struct netlink_callback *cb;
	22	struct mutex *cb_mutex;
	23	struct mutex cb_def_mutex;
	24	void (netlink_rcv)(struct sk_buff skb);
	25	void (*netlink_bind)(int group);
	26	struct module *module;
	27	};
	28
	29	static inline struct netlink_sock nlk_sk(struct sock sk)
	30	{
	31	return container_of(sk, struct netlink_sock, sk);
	32	}
	33
	34	struct nl_portid_hash {
	35	struct hlist_head *table;
	36	unsigned long rehash_time;
	37
	38	unsigned int mask;
	39	unsigned int shift;
	40
	41	unsigned int entries;
	42	unsigned int max_shift;
	43
	44	u32 rnd;
	45	};
	46
	47	struct netlink_table {
	48	struct nl_portid_hash hash;
	49	struct hlist_head mc_list;
	50	struct listeners __rcu *listeners;
	51	unsigned int flags;
	52	unsigned int groups;
	53	struct mutex *cb_mutex;
	54	struct module *module;
	55	void (*bind)(int group);
	56	int registered;
	57	};
	58
	59	extern struct netlink_table *nl_table;
	60	extern rwlock_t nl_table_lock;
	61
	62	#endif