[GitHub/mt8127/android_kernel_alcatel_ttab.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_ring {
	void			**pg_vec;
	unsigned int		head;
	unsigned int		frames_per_block;
	unsigned int		frame_size;
	unsigned int		frame_max;

	unsigned int		pg_vec_order;
	unsigned int		pg_vec_pages;
	unsigned int		pg_vec_len;

	atomic_t		pending;
};

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;
#ifdef CONFIG_NETLINK_MMAP
	struct mutex		pg_vec_lock;
	struct netlink_ring	rx_ring;
	struct netlink_ring	tx_ring;
	atomic_t		mapped;
#endif /* CONFIG_NETLINK_MMAP */
};

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
ccdfcc39 PM	9	struct netlink_ring {
	10	void **pg_vec;
	11	unsigned int head;
	12	unsigned int frames_per_block;
	13	unsigned int frame_size;
	14	unsigned int frame_max;
	15
	16	unsigned int pg_vec_order;
	17	unsigned int pg_vec_pages;
	18	unsigned int pg_vec_len;
	19
	20	atomic_t pending;
	21	};
	22
0f29c768 AV	23	struct netlink_sock {
	24	/* struct sock has to be the first member of netlink_sock */
	25	struct sock sk;
	26	u32 portid;
	27	u32 dst_portid;
	28	u32 dst_group;
	29	u32 flags;
	30	u32 subscriptions;
	31	u32 ngroups;
	32	unsigned long *groups;
	33	unsigned long state;
	34	wait_queue_head_t wait;
	35	struct netlink_callback *cb;
	36	struct mutex *cb_mutex;
	37	struct mutex cb_def_mutex;
	38	void (netlink_rcv)(struct sk_buff skb);
	39	void (*netlink_bind)(int group);
	40	struct module *module;
ccdfcc39 PM	41	#ifdef CONFIG_NETLINK_MMAP
	42	struct mutex pg_vec_lock;
	43	struct netlink_ring rx_ring;
	44	struct netlink_ring tx_ring;
	45	atomic_t mapped;
	46	#endif /* CONFIG_NETLINK_MMAP */
0f29c768 AV	47	};
	48
	49	static inline struct netlink_sock nlk_sk(struct sock sk)
	50	{
	51	return container_of(sk, struct netlink_sock, sk);
	52	}
	53
	54	struct nl_portid_hash {
	55	struct hlist_head *table;
	56	unsigned long rehash_time;
	57
	58	unsigned int mask;
	59	unsigned int shift;
	60
	61	unsigned int entries;
	62	unsigned int max_shift;
	63
	64	u32 rnd;
	65	};
	66
	67	struct netlink_table {
	68	struct nl_portid_hash hash;
	69	struct hlist_head mc_list;
	70	struct listeners __rcu *listeners;
	71	unsigned int flags;
	72	unsigned int groups;
	73	struct mutex *cb_mutex;
	74	struct module *module;
	75	void (*bind)(int group);
	76	int registered;
	77	};
	78
	79	extern struct netlink_table *nl_table;
	80	extern rwlock_t nl_table_lock;
	81
	82	#endif