/* @(#) $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)