diff options
Diffstat (limited to 'include/net/inetpeer.h')
| -rw-r--r-- | include/net/inetpeer.h | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/include/net/inetpeer.h b/include/net/inetpeer.h new file mode 100644 index 00000000000..87b1df0d4d8 --- /dev/null +++ b/include/net/inetpeer.h @@ -0,0 +1,46 @@ +/* + * 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 */ |