[linux-2.6-block.git] / include / net / inetpeer.h

/*
 *		INETPEER - A storage for permanent information about peers
 *
 *  Version:	$Id: inetpeer.h,v 1.2 2002/01/12 07:54:56 davem Exp $
 *
 *  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	*
	4	* Version: $Id: inetpeer.h,v 1.2 2002/01/12 07:54:56 davem Exp $
	5	*
	6	* Authors: Andrey V. Savochkin <saw@msu.ru>
	7	*/
	8
	9	#ifndef _NET_INETPEER_H
	10	#define _NET_INETPEER_H
	11
	12	#include <linux/types.h>
	13	#include <linux/init.h>
	14	#include <linux/jiffies.h>
	15	#include <linux/spinlock.h>
	16	#include <asm/atomic.h>
	17
	18	struct inet_peer
	19	{
78d79423	20	/* group together avl_left,avl_right,v4daddr to speedup lookups */
1da177e4	21	struct inet_peer avl_left, avl_right;
78d79423 ED	22	__be32 v4daddr; /* peer's address */
	23	__u16 avl_height;
	24	__u16 ip_id_count; /* IP ID for the next packet */
d71209de	25	struct list_head unused;
4663afe2	26	__u32 dtime; /* the time of last use of not
1da177e4 LT	27	* referenced entries */
1da177e4 LT	28	atomic_t refcnt;
89cee8b1	29	atomic_t rid; /* Frag reception counter */
1da177e4 LT	30	__u32 tcp_ts;
	31	unsigned long tcp_ts_stamp;
	32	};
	33
	34	void inet_initpeers(void) __init;
	35
	36	/* can be called with or without local BH being disabled */
53576d9b	37	struct inet_peer *inet_getpeer(__be32 daddr, int create);
1da177e4	38
1da177e4	39	/* can be called from BH context or outside */
4663afe2	40	extern void inet_putpeer(struct inet_peer *p);
1da177e4 LT	41
	42	extern spinlock_t inet_peer_idlock;
	43	/* can be called with or without local BH being disabled */
	44	static inline __u16 inet_getid(struct inet_peer *p, int more)
	45	{
	46	__u16 id;
	47
	48	spin_lock_bh(&inet_peer_idlock);
	49	id = p->ip_id_count;
	50	p->ip_id_count += 1 + more;
	51	spin_unlock_bh(&inet_peer_idlock);
	52	return id;
	53	}
	54
	55	#endif /* _NET_INETPEER_H */