// SoftEther VPN Source Code
// Mayaqua Kernel
// 
// TunTap.h
// Header file of the TUN / TAP device driver
// Comments: Tetsuo Sugiyama, Ph.D.
// 
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License
// version 2 as published by the Free Software Foundation.
// 
// 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.
// 
// You should have received a copy of the GNU General Public License version 2
// along with this program; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
// 
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
// IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
// CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
// TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
// SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
// 
// THE LICENSE AGREEMENT IS ATTACHED ON THE SOURCE-CODE PACKAGE
// AS "LICENSE.TXT" FILE. READ THE TEXT FILE IN ADVANCE TO USE THE SOFTWARE.
// 
// 
// THIS SOFTWARE IS DEVELOPED IN JAPAN, AND DISTRIBUTED FROM JAPAN,
// UNDER JAPANESE LAWS. YOU MUST AGREE IN ADVANCE TO USE, COPY, MODIFY,
// MERGE, PUBLISH, DISTRIBUTE, SUBLICENSE, AND/OR SELL COPIES OF THIS
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// USE ONLY IN JAPAN. DO NOT USE IT IN OTHER COUNTRIES. IMPORTING THIS
// SOFTWARE INTO OTHER COUNTRIES IS AT YOUR OWN RISK. SOME COUNTRIES
// PROHIBIT ENCRYPTED COMMUNICATIONS. USING THIS SOFTWARE IN OTHER
// COUNTRIES MIGHT BE RESTRICTED.
// 
// 
// SOURCE CODE CONTRIBUTION
// ------------------------
// 
// Your contribution to SoftEther VPN Project is much appreciated.
// Please send patches to us through GitHub.
// Read the SoftEther VPN Patch Acceptance Policy in advance:
// http://www.softether.org/5-download/src/9.patch
// 
// 
// DEAR SECURITY EXPERTS
// ---------------------
// 
// If you find a bug or a security vulnerability please kindly inform us
// about the problem immediately so that we can fix the security problem
// to protect a lot of users around the world as soon as possible.
// 
// Our e-mail address for security reports is:
// softether-vpn-security [at] softether.org
// 
// Please note that the above e-mail address is not a technical support
// inquiry address. If you need technical assistance, please visit
// http://www.softether.org/ and ask your question on the users forum.
// 
// Thank you for your cooperation.
// 
// 
// NO MEMORY OR RESOURCE LEAKS
// ---------------------------
// 
// The memory-leaks and resource-leaks verification under the stress
// test has been passed before release this source code.


#ifndef	TUNTAP_H
#define	TUNTAP_H

#ifdef	UNIX_LINUX

// -----------------------------------------------------------------
// Tap header for Linux
// -----------------------------------------------------------------
/*
 *  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.
 *
 *  $Id: if_tun.h,v 1.2 2001/10/31 15:27:57 arjanv Exp $
 */

#ifndef __IF_TUN_H
#define __IF_TUN_H

/* Uncomment to enable debugging */
/* #define TUN_DEBUG 1 */



/* Read queue size */
#define TUN_READQ_SIZE  10

/* TUN device flags */
#define TUN_TUN_DEV     0x0001  
#define TUN_TAP_DEV     0x0002
#define TUN_TYPE_MASK   0x000f

#define TUN_FASYNC      0x0010
#define TUN_NOCHECKSUM  0x0020
#define TUN_NO_PI       0x0040
#define TUN_ONE_QUEUE   0x0080
#define TUN_PERSIST     0x0100  

/* Ioctl defines */
#define TUNSETNOCSUM  _IOW('T', 200, int) 
#define TUNSETDEBUG   _IOW('T', 201, int) 
#define TUNSETIFF     _IOW('T', 202, int) 
#define TUNSETPERSIST _IOW('T', 203, int) 
#define TUNSETOWNER   _IOW('T', 204, int)

/* TUNSETIFF ifr flags */
#define IFF_TUN         0x0001
#define IFF_TAP         0x0002
#define IFF_NO_PI       0x1000
#define IFF_ONE_QUEUE   0x2000

struct tun_pi {
        unsigned short flags;
        unsigned short proto;
};
#define TUN_PKT_STRIP   0x0001

#endif /* __IF_TUN_H */
#else	// UNIX_LINUX

#ifdef	UNIX_SOLARIS

// -----------------------------------------------------------------
// Tap header for Solaris
// -----------------------------------------------------------------
/*
 *  Universal TUN/TAP device driver.
 *
 *  Multithreaded STREAMS tun pseudo 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.
 *
 *  $Id: if_tun.h,v 1.4 2000/05/01 12:23:27 maxk Exp $
 */

#ifndef _SYS_IF_TUN_H
#define _SYS_IF_TUN_H

#ifdef _KERNEL
/* Uncomment to enable debuging */
/* #define TUN_DEBUG 1 */

#ifdef TUN_DEBUG
#define DBG      cmn_err
#else
#define DBG( a... )
#endif

/* PPA structure, one per TUN iface */ 
struct tunppa {
  unsigned int id;              /* Iface number         */
  queue_t *rq;                  /* Control Stream RQ    */
  struct tunstr * p_str;        /* Protocol Streams     */
}; 
#define TUNMAXPPA       20

/* Stream structure, one per Stream */
struct tunstr {
  struct tunstr *s_next;        /* next in streams list */
  struct tunstr *p_next;        /* next in ppa list */
  queue_t *rq;                  /* pointer to rq */

  struct tunppa *ppa;           /* assigned PPA */
  u_long flags;                 /* flags */
  u_long state;                 /* DL state */
  u_long sap;                   /* bound sap */
  u_long minor;                 /* minor device number */
};

/* Flags */
#define TUN_CONTROL     0x0001

#define TUN_RAW         0x0100
#define TUN_FAST        0x0200

#define TUN_ALL_PHY     0x0010
#define TUN_ALL_SAP     0x0020
#define TUN_ALL_MUL     0x0040

#define SNIFFER(a) ( (a & TUN_ALL_SAP) || (a & TUN_ALL_PHY) )

struct tundladdr {
  u_short sap;
};
#define TUN_ADDR_LEN    (sizeof(struct tundladdr))

#define TUN_QUEUE       0
#define TUN_DROP        1

#endif /* _KERNEL */

/* IOCTL defines */
#define TUNNEWPPA       (('T'<<16) | 0x0001)
#define TUNSETPPA       (('T'<<16) | 0x0002)

#endif  /* _SYS_IF_TUN_H */

#else	// UNIX_SOLARIS

#if	defined(UNIX_BSD) || (!defined(NO_VLAN) && defined(UNIX_MACOS))

// -----------------------------------------------------------------
// Tap header for FreeBSD
// -----------------------------------------------------------------
// -----------------------------------------------------------------
// Tap header For MacOS
// -----------------------------------------------------------------
/*      $NetBSD: if_tun.h,v 1.5 1994/06/29 06:36:27 cgd Exp $   */

/*
 * Copyright (c) 1988, Julian Onions <jpo@cs.nott.ac.uk>
 * Nottingham University 1987.
 *
 * This source may be freely distributed, however I would be interested
 * in any changes that are made.
 *
 * This driver takes packets off the IP i/f and hands them up to a
 * user process to have its wicked way with. This driver has it's
 * roots in a similar driver written by Phil Cockcroft (formerly) at
 * UCL. This driver is based much more on read/write/select mode of
 * operation though.
 *
 * $FreeBSD: src/sys/net/if_tun.h,v 1.17 2000/01/23 01:47:12 brian Exp $
 */

#ifndef _NET_IF_TUN_H_
#define _NET_IF_TUN_H_

/* Refer to if_tunvar.h for the softc stuff */

/* Maximum transmit packet size (default) */
#define TUNMTU          1500

/* Maximum receive packet size (hard limit) */
#define TUNMRU          16384

struct tuninfo {
        int     baudrate;               /* linespeed */
        short   mtu;                    /* maximum transmission unit */
        u_char  type;                   /* ethernet, tokenring, etc. */
        u_char  dummy;                  /* place holder */
};

/* ioctl's for get/set debug */
#define TUNSDEBUG       _IOW('t', 90, int)
#define TUNGDEBUG       _IOR('t', 89, int)
#define TUNSIFINFO      _IOW('t', 91, struct tuninfo)
#define TUNGIFINFO      _IOR('t', 92, struct tuninfo)
#define TUNSLMODE       _IOW('t', 93, int)
#define TUNSIFMODE      _IOW('t', 94, int)
#define TUNSIFPID       _IO('t', 95)
#define TUNSIFHEAD      _IOW('t', 96, int)
#define TUNGIFHEAD      _IOR('t', 97, int)

#endif /* !_NET_IF_TUN_H_ */

#else	// UNIX_BSD

#endif	// defined(UNIX_BSD) || (!defined(NO_VLAN) && defined(UNIX_MACOS))

#endif	// UNIX_SOLARIS

#endif	// UNIX_LINUX

#endif	// TUNTAP_H

// Developed by SoftEther VPN Project at University of Tsukuba in Japan.
// Department of Computer Science has dozens of overly-enthusiastic geeks.
// Join us: http://www.tsukuba.ac.jp/english/admission/
