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Arnaldo Carvalho de Melo6d6ee432005-12-13 23:25:19 -08001/*
2 * NET Generic infrastructure for Network protocols.
3 *
4 * Authors: Arnaldo Carvalho de Melo <acme@conectiva.com.br>
5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version
9 * 2 of the License, or (at your option) any later version.
10 */
11#ifndef _TIMEWAIT_SOCK_H
12#define _TIMEWAIT_SOCK_H
13
14#include <linux/slab.h>
Paul Gortmaker187f1882011-11-23 20:12:59 -050015#include <linux/bug.h>
Arnaldo Carvalho de Melo6d6ee432005-12-13 23:25:19 -080016#include <net/sock.h>
17
18struct timewait_sock_ops {
Christoph Lametere18b8902006-12-06 20:33:20 -080019 struct kmem_cache *twsk_slab;
Catalin Marinas7e56b5d2008-11-21 16:45:22 -080020 char *twsk_slab_name;
Arnaldo Carvalho de Melo6d6ee432005-12-13 23:25:19 -080021 unsigned int twsk_obj_size;
22 int (*twsk_unique)(struct sock *sk,
23 struct sock *sktw, void *twp);
YOSHIFUJI Hideaki42b67852006-10-10 19:42:09 -070024 void (*twsk_destructor)(struct sock *sk);
David S. Millerccb7c412010-12-01 18:09:13 -080025 void *(*twsk_getpeer)(struct sock *sk);
Arnaldo Carvalho de Melo6d6ee432005-12-13 23:25:19 -080026};
27
28static inline int twsk_unique(struct sock *sk, struct sock *sktw, void *twp)
29{
30 if (sk->sk_prot->twsk_prot->twsk_unique != NULL)
31 return sk->sk_prot->twsk_prot->twsk_unique(sk, sktw, twp);
32 return 0;
33}
34
YOSHIFUJI Hideaki42b67852006-10-10 19:42:09 -070035static inline void twsk_destructor(struct sock *sk)
36{
YOSHIFUJI Hideakicfb6eeb2006-11-14 19:07:45 -080037 BUG_ON(sk == NULL);
38 BUG_ON(sk->sk_prot == NULL);
39 BUG_ON(sk->sk_prot->twsk_prot == NULL);
YOSHIFUJI Hideaki42b67852006-10-10 19:42:09 -070040 if (sk->sk_prot->twsk_prot->twsk_destructor != NULL)
41 sk->sk_prot->twsk_prot->twsk_destructor(sk);
42}
43
David S. Millerccb7c412010-12-01 18:09:13 -080044static inline void *twsk_getpeer(struct sock *sk)
45{
46 if (sk->sk_prot->twsk_prot->twsk_getpeer)
47 return sk->sk_prot->twsk_prot->twsk_getpeer(sk);
48 return NULL;
49}
50
Arnaldo Carvalho de Melo6d6ee432005-12-13 23:25:19 -080051#endif /* _TIMEWAIT_SOCK_H */