/*
   *  Universal TUN/TAP device driver.
   *  Copyright (C) 1999-2000 Maxim Krasnyansky <max_mk@yahoo.com>
   *
   *  This program is free software; you can redistribute it and/or modify
   *  it under the terms of the GNU General Public License as published by
   *  the Free Software Foundation; either version 2 of the License, or
   *  (at your option) any later version.
   *
   *  This program is distributed in the hope that it will be useful,
   *  but WITHOUT ANY WARRANTY; without even the implied warranty of
   *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
   *  GNU General Public License for more details.
   */
  #ifndef __IF_TUN_H
  #define __IF_TUN_H
  
  #include <uapi/linux/if_tun.h>
  
  #if defined(CONFIG_TUN) || defined(CONFIG_TUN_MODULE)
  struct socket *tun_get_socket(struct file *);
  #else
  #include <linux/err.h>
  #include <linux/errno.h>
  struct file;
  struct socket;
  static inline struct socket *tun_get_socket(struct file *f)
  {
  	return ERR_PTR(-EINVAL);
  }
  #endif /* CONFIG_TUN */
  #endif /* __IF_TUN_H */