Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
1/*
2 * INETPEER - A storage for permanent information about peers
3 *
4 * Authors: Andrey V. Savochkin <saw@msu.ru>
5 */
6
7#ifndef _NET_INETPEER_H
8#define _NET_INETPEER_H
9
10#include <linux/types.h>
11#include <linux/init.h>
12#include <linux/jiffies.h>
13#include <linux/spinlock.h>
14#include <asm/atomic.h>
15
16struct inet_peer {
17 /* group together avl_left,avl_right,v4daddr to speedup lookups */
18 struct inet_peer *avl_left, *avl_right;
19 __be32 v4daddr; /* peer's address */
20 __u32 avl_height;
21 struct list_head unused;
22 __u32 dtime; /* the time of last use of not
23 * referenced entries */
24 atomic_t refcnt;
25 atomic_t rid; /* Frag reception counter */
26 atomic_t ip_id_count; /* IP ID for the next packet */
27 __u32 tcp_ts;
28 __u32 tcp_ts_stamp;
29};
30
31void inet_initpeers(void) __init;
32
33/* can be called with or without local BH being disabled */
34struct inet_peer *inet_getpeer(__be32 daddr, int create);
35
36/* can be called from BH context or outside */
37extern void inet_putpeer(struct inet_peer *p);
38
39/* can be called with or without local BH being disabled */
40static inline __u16 inet_getid(struct inet_peer *p, int more)
41{
42 more++;
43 return atomic_add_return(more, &p->ip_id_count) - more;
44}
45
46#endif /* _NET_INETPEER_H */