1/*
2 *  Universal TUN/TAP device driver.
3 *  Copyright (C) 1999-2000 Maxim Krasnyansky <max_mk@yahoo.com>
4 *
5 *  This program is free software; you can redistribute it and/or modify
6 *  it under the terms of the GNU General Public License as published by
7 *  the Free Software Foundation; either version 2 of the License, or
8 *  (at your option) any later version.
9 *
10 *  This program is distributed in the hope that it will be useful,
11 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
12 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 *  GNU General Public License for more details.
14 */
15#ifndef __IF_TUN_H
16#define __IF_TUN_H
17
18#include <uapi/linux/if_tun.h>
19
20#if defined(CONFIG_TUN) || defined(CONFIG_TUN_MODULE)
21struct socket *tun_get_socket(struct file *);
22#else
23#include <linux/err.h>
24#include <linux/errno.h>
25struct file;
26struct socket;
27static inline struct socket *tun_get_socket(struct file *f)
28{
29	return ERR_PTR(-EINVAL);
30}
31#endif /* CONFIG_TUN */
32#endif /* __IF_TUN_H */
33