/*
* 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>
*/
#include <linux/spinlock.h>
#include <asm/atomic.h>
-struct inet_peer
-{
+struct inet_peer {
+ /* group together avl_left,avl_right,v4daddr to speedup lookups */
struct inet_peer *avl_left, *avl_right;
- struct inet_peer *unused_next, **unused_prevp;
- unsigned long dtime; /* the time of last use of not
+ __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;
- __u32 v4daddr; /* peer's address */
- __u16 avl_height;
- __u16 ip_id_count; /* IP ID for the next packet */
+ atomic_t rid; /* Frag reception counter */
+ atomic_t ip_id_count; /* IP ID for the next packet */
__u32 tcp_ts;
- unsigned long tcp_ts_stamp;
+ __u32 tcp_ts_stamp;
};
void inet_initpeers(void) __init;
/* can be called with or without local BH being disabled */
-struct inet_peer *inet_getpeer(__u32 daddr, int create);
+struct inet_peer *inet_getpeer(__be32 daddr, int create);
-extern spinlock_t inet_peer_unused_lock;
-extern struct inet_peer **inet_peer_unused_tailp;
/* can be called from BH context or outside */
-static inline void inet_putpeer(struct inet_peer *p)
-{
- spin_lock_bh(&inet_peer_unused_lock);
- if (atomic_dec_and_test(&p->refcnt)) {
- p->unused_prevp = inet_peer_unused_tailp;
- p->unused_next = NULL;
- *inet_peer_unused_tailp = p;
- inet_peer_unused_tailp = &p->unused_next;
- p->dtime = jiffies;
- }
- spin_unlock_bh(&inet_peer_unused_lock);
-}
+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;
+ more++;
+ return atomic_add_return(more, &p->ip_id_count) - more;
}
#endif /* _NET_INETPEER_H */