/* @(#) $Header: /tcpdump/master/tcpdump/mpls.h,v 1.1 2004-06-14 14:47:58 hannes Exp $ (LBL) * Copyright (C) 2001 WIDE Project.  All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright *    notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright *    notice, this list of conditions and the following disclaimer in the *    documentation and/or other materials provided with the distribution. * 3. Neither the name of the project 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 BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED.  IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */#define LABEL_MASK	0xfffff000#define LABEL_SHIFT	12#define	EXP_MASK	0x00000e00#define EXP_SHIFT	9#define	STACK_MASK	0x00000100#define STACK_SHIFT	8#define TTL_MASK	0x000000ff#define TTL_SHIFT	0#define MPLS_LABEL(x)	(((x) & LABEL_MASK) >> LABEL_SHIFT)#define MPLS_EXP(x)	(((x) & EXP_MASK) >> EXP_SHIFT)#define MPLS_STACK(x)	(((x) & STACK_MASK) >> STACK_SHIFT)#define MPLS_TTL(x)	(((x) & TTL_MASK) >> TTL_SHIFT)