[GitHub/mt8127/android_kernel_alcatel_ttab.git] / include / net / inetpeer.h

/*
 *		INETPEER - A storage for permanent information about peers
 *
 *  Authors:	Andrey V. Savochkin <saw@msu.ru>
 */

#ifndef _NET_INETPEER_H
#define _NET_INETPEER_H

#include <linux/types.h>
#include <linux/init.h>
#include <linux/jiffies.h>
#include <linux/spinlock.h>
#include <asm/atomic.h>

struct inet_peer
{
	/* group together avl_left,avl_right,v4daddr to speedup lookups */
	struct inet_peer	*avl_left, *avl_right;
	__be32			v4daddr;	/* peer's address */
	__u16			avl_height;
	__u16			ip_id_count;	/* IP ID for the next packet */
	struct list_head	unused;
	__u32			dtime;		/* the time of last use of not
						 * referenced entries */
	atomic_t		refcnt;
	atomic_t		rid;		/* Frag reception counter */
	__u32			tcp_ts;
	unsigned long		tcp_ts_stamp;
};

void			inet_initpeers(void) __init;

/* can be called with or without local BH being disabled */
struct inet_peer	*inet_getpeer(__be32 daddr, int create);

/* can be called from BH context or outside */
extern void inet_putpeer(struct inet_peer *p);

extern spinlock_t inet_peer_idlock;
/* can be called with or without local BH being disabled */
static inline __u16	inet_getid(struct inet_peer *p, int more)
{
	__u16 id;

	spin_lock_bh(&inet_peer_idlock);
	id = p->ip_id_count;
	p->ip_id_count += 1 + more;
	spin_unlock_bh(&inet_peer_idlock);
	return id;
}

#endif /* _NET_INETPEER_H */
Commit	Line	Data
1da177e4 LT	1	/*
	2	* INETPEER - A storage for permanent information about peers
	3	*
1da177e4 LT	4	* Authors: Andrey V. Savochkin <saw@msu.ru>
	5	*/
	6
	7	#ifndef _NET_INETPEER_H
	8	#define _NET_INETPEER_H
	9
	10	#include <linux/types.h>
	11	#include <linux/init.h>
	12	#include <linux/jiffies.h>
	13	#include <linux/spinlock.h>
	14	#include <asm/atomic.h>
	15
	16	struct inet_peer
	17	{
78d79423	18	/* group together avl_left,avl_right,v4daddr to speedup lookups */
1da177e4	19	struct inet_peer avl_left, avl_right;
78d79423 ED	20	__be32 v4daddr; /* peer's address */
	21	__u16 avl_height;
	22	__u16 ip_id_count; /* IP ID for the next packet */
d71209de	23	struct list_head unused;
4663afe2	24	__u32 dtime; /* the time of last use of not
1da177e4 LT	25	* referenced entries */
1da177e4 LT	26	atomic_t refcnt;
89cee8b1	27	atomic_t rid; /* Frag reception counter */
1da177e4 LT	28	__u32 tcp_ts;
	29	unsigned long tcp_ts_stamp;
	30	};
	31
	32	void inet_initpeers(void) __init;
	33
	34	/* can be called with or without local BH being disabled */
53576d9b	35	struct inet_peer *inet_getpeer(__be32 daddr, int create);
1da177e4	36
1da177e4	37	/* can be called from BH context or outside */
4663afe2	38	extern void inet_putpeer(struct inet_peer *p);
1da177e4 LT	39
	40	extern spinlock_t inet_peer_idlock;
	41	/* can be called with or without local BH being disabled */
	42	static inline __u16 inet_getid(struct inet_peer *p, int more)
	43	{
	44	__u16 id;
	45
	46	spin_lock_bh(&inet_peer_idlock);
	47	id = p->ip_id_count;
	48	p->ip_id_count += 1 + more;
	49	spin_unlock_bh(&inet_peer_idlock);
	50	return id;
	51	}
	52
	53	#endif /* _NET_INETPEER_H */