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/* @(#) $Header: /tcpdump/master/tcpdump/l2tp.h,v 1.5 2001-11-05 10:03:27 guy Exp $ (LBL) */
/*
* Copyright (c) 1991, 1993, 1994, 1995, 1996, 1997
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that: (1) source code distributions
* retain the above copyright notice and this paragraph in its entirety, (2)
* distributions including binary code include the above copyright notice and
* this paragraph in its entirety in the documentation or other materials
* provided with the distribution, and (3) all advertising materials mentioning
* features or use of this software display the following acknowledgement:
* ``This product includes software developed by the University of California,
* Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
* the University nor the names of its contributors may be used to endorse
* or promote products derived from this software without specific prior
* written permission.
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*
* L2TP support contributed by Motonori Shindo (mshindo@mshindo.net)
*/
#define L2TP_FLAG_TYPE 0x8000 /* Type (0=Data, 1=Control) */
#define L2TP_FLAG_LENGTH 0x4000 /* Length */
#define L2TP_FLAG_SEQUENCE 0x0800 /* Sequence */
#define L2TP_FLAG_OFFSET 0x0200 /* Offset */
#define L2TP_FLAG_PRIORITY 0x0100 /* Priority */
#define L2TP_VERSION_MASK 0x000f /* Version Mask */
#define L2TP_VERSION_L2F 0x0001 /* L2F */
#define L2TP_VERSION_L2TP 0x0002 /* L2TP */
#define L2TP_AVP_HDR_FLAG_MANDATORY 0x8000 /* Mandatory Flag */
#define L2TP_AVP_HDR_FLAG_HIDDEN 0x4000 /* Hidden Flag */
#define L2TP_AVP_HDR_LEN_MASK 0x03ff /* Length Mask */
#define L2TP_FRAMING_CAP_SYNC_MASK 0x00000001 /* Synchronous */
#define L2TP_FRAMING_CAP_ASYNC_MASK 0x00000002 /* Asynchronous */
#define L2TP_FRAMING_TYPE_SYNC_MASK 0x00000001 /* Synchronous */
#define L2TP_FRAMING_TYPE_ASYNC_MASK 0x00000002 /* Asynchronous */
#define L2TP_BEARER_CAP_DIGITAL_MASK 0x00000001 /* Digital */
#define L2TP_BEARER_CAP_ANALOG_MASK 0x00000002 /* Analog */
#define L2TP_BEARER_TYPE_DIGITAL_MASK 0x00000001 /* Digital */
#define L2TP_BEARER_TYPE_ANALOG_MASK 0x00000002 /* Analog */
/* Authen Type */
#define L2TP_AUTHEN_TYPE_RESERVED 0x0000 /* Reserved */
#define L2TP_AUTHEN_TYPE_TEXTUAL 0x0001 /* Textual username/password exchange */
#define L2TP_AUTHEN_TYPE_CHAP 0x0002 /* PPP CHAP */
#define L2TP_AUTHEN_TYPE_PAP 0x0003 /* PPP PAP */
#define L2TP_AUTHEN_TYPE_NO_AUTH 0x0004 /* No Authentication */
#define L2TP_AUTHEN_TYPE_MSCHAPv1 0x0005 /* MSCHAPv1 */
#define L2TP_PROXY_AUTH_ID_MASK 0x00ff
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