[linux-2.6-block.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 */
	__u32			avl_height;
	struct list_head	unused;
	__u32			dtime;		/* the time of last use of not
						 * referenced entries */
	atomic_t		refcnt;
	atomic_t		rid;		/* Frag reception counter */
	atomic_t		ip_id_count;	/* IP ID for the next packet */
	__u32			tcp_ts;
	__u32			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);

/* can be called with or without local BH being disabled */
static inline __u16	inet_getid(struct inet_peer *p, int more)
{
	more++;
	return atomic_add_return(more, &p->ip_id_count) - more;
}

#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
fd2c3ef7	16	struct inet_peer {
78d79423	17	/* group together avl_left,avl_right,v4daddr to speedup lookups */
1da177e4	18	struct inet_peer avl_left, avl_right;
78d79423	19	__be32 v4daddr; /* peer's address */
2c1409a0	20	__u32 avl_height;
d71209de	21	struct list_head unused;
4663afe2	22	__u32 dtime; /* the time of last use of not
1da177e4 LT	23	* referenced entries */
1da177e4 LT	24	atomic_t refcnt;
89cee8b1	25	atomic_t rid; /* Frag reception counter */
2c1409a0	26	atomic_t ip_id_count; /* IP ID for the next packet */
1da177e4	27	__u32 tcp_ts;
2c1409a0	28	__u32 tcp_ts_stamp;
1da177e4 LT	29	};
	30
	31	void inet_initpeers(void) __init;
	32
	33	/* can be called with or without local BH being disabled */
53576d9b	34	struct inet_peer *inet_getpeer(__be32 daddr, int create);
1da177e4	35
1da177e4	36	/* can be called from BH context or outside */
4663afe2	37	extern void inet_putpeer(struct inet_peer *p);
1da177e4	38
1da177e4 LT	39	/* can be called with or without local BH being disabled */
	40	static inline __u16 inet_getid(struct inet_peer *p, int more)
	41	{
2c1409a0 ED	42	more++;
2c1409a0 ED	43	return atomic_add_return(more, &p->ip_id_count) - more;
1da177e4 LT	44	}
	45
	46	#endif /* _NET_INETPEER_H */