/* * 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 */ __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 */