d71209ded2
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>
55 lines
1.4 KiB
C
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 */
|