| /* |
| * 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 */ |