linux-stable/include/net/inetpeer.h
Pavel Emelyanov d71209ded2 [INET]: Use list_head-s in inetpeer.c
The inetpeer.c tracks the LRU list of inet_perr-s, but makes
it by hands. Use the list_head-s for this.

Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-11-12 21:27:28 -08:00

55 lines
1.4 KiB
C

/*
* 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 */