mpls.h revision 190207
1190207Srpaulo/* @(#) $Header: /tcpdump/master/tcpdump/mpls.h,v 1.1 2004-06-14 14:47:58 hannes Exp $ (LBL) 2146773Ssam * Copyright (C) 2001 WIDE Project. All rights reserved. 3146773Ssam * 4146773Ssam * Redistribution and use in source and binary forms, with or without 5146773Ssam * modification, are permitted provided that the following conditions 6146773Ssam * are met: 7146773Ssam * 1. Redistributions of source code must retain the above copyright 8146773Ssam * notice, this list of conditions and the following disclaimer. 9146773Ssam * 2. Redistributions in binary form must reproduce the above copyright 10146773Ssam * notice, this list of conditions and the following disclaimer in the 11146773Ssam * documentation and/or other materials provided with the distribution. 12146773Ssam * 3. Neither the name of the project nor the names of its contributors 13146773Ssam * may be used to endorse or promote products derived from this software 14146773Ssam * without specific prior written permission. 15146773Ssam * 16146773Ssam * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND 17146773Ssam * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18146773Ssam * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19146773Ssam * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE 20146773Ssam * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21146773Ssam * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22146773Ssam * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23146773Ssam * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24146773Ssam * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25146773Ssam * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26146773Ssam * SUCH DAMAGE. 27146773Ssam */ 28146773Ssam 29146773Ssam#define LABEL_MASK 0xfffff000 30146773Ssam#define LABEL_SHIFT 12 31146773Ssam#define EXP_MASK 0x00000e00 32146773Ssam#define EXP_SHIFT 9 33146773Ssam#define STACK_MASK 0x00000100 34146773Ssam#define STACK_SHIFT 8 35146773Ssam#define TTL_MASK 0x000000ff 36146773Ssam#define TTL_SHIFT 0 37146773Ssam 38146773Ssam#define MPLS_LABEL(x) (((x) & LABEL_MASK) >> LABEL_SHIFT) 39146773Ssam#define MPLS_EXP(x) (((x) & EXP_MASK) >> EXP_SHIFT) 40146773Ssam#define MPLS_STACK(x) (((x) & STACK_MASK) >> STACK_SHIFT) 41146773Ssam#define MPLS_TTL(x) (((x) & TTL_MASK) >> TTL_SHIFT) 42