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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