1*b636d99dSDavid van Moolenbroek /* 2*b636d99dSDavid van Moolenbroek * Copyright (C) 2001 WIDE Project. All rights reserved. 3*b636d99dSDavid van Moolenbroek * 4*b636d99dSDavid van Moolenbroek * Redistribution and use in source and binary forms, with or without 5*b636d99dSDavid van Moolenbroek * modification, are permitted provided that the following conditions 6*b636d99dSDavid van Moolenbroek * are met: 7*b636d99dSDavid van Moolenbroek * 1. Redistributions of source code must retain the above copyright 8*b636d99dSDavid van Moolenbroek * notice, this list of conditions and the following disclaimer. 9*b636d99dSDavid van Moolenbroek * 2. Redistributions in binary form must reproduce the above copyright 10*b636d99dSDavid van Moolenbroek * notice, this list of conditions and the following disclaimer in the 11*b636d99dSDavid van Moolenbroek * documentation and/or other materials provided with the distribution. 12*b636d99dSDavid van Moolenbroek * 3. Neither the name of the project nor the names of its contributors 13*b636d99dSDavid van Moolenbroek * may be used to endorse or promote products derived from this software 14*b636d99dSDavid van Moolenbroek * without specific prior written permission. 15*b636d99dSDavid van Moolenbroek * 16*b636d99dSDavid van Moolenbroek * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND 17*b636d99dSDavid van Moolenbroek * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18*b636d99dSDavid van Moolenbroek * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19*b636d99dSDavid van Moolenbroek * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE 20*b636d99dSDavid van Moolenbroek * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21*b636d99dSDavid van Moolenbroek * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22*b636d99dSDavid van Moolenbroek * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23*b636d99dSDavid van Moolenbroek * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24*b636d99dSDavid van Moolenbroek * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25*b636d99dSDavid van Moolenbroek * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26*b636d99dSDavid van Moolenbroek * SUCH DAMAGE. 27*b636d99dSDavid van Moolenbroek */ 28*b636d99dSDavid van Moolenbroek 29*b636d99dSDavid van Moolenbroek #define LABEL_MASK 0xfffff000 30*b636d99dSDavid van Moolenbroek #define LABEL_SHIFT 12 31*b636d99dSDavid van Moolenbroek #define EXP_MASK 0x00000e00 32*b636d99dSDavid van Moolenbroek #define EXP_SHIFT 9 33*b636d99dSDavid van Moolenbroek #define STACK_MASK 0x00000100 34*b636d99dSDavid van Moolenbroek #define STACK_SHIFT 8 35*b636d99dSDavid van Moolenbroek #define TTL_MASK 0x000000ff 36*b636d99dSDavid van Moolenbroek #define TTL_SHIFT 0 37*b636d99dSDavid van Moolenbroek 38*b636d99dSDavid van Moolenbroek #define MPLS_LABEL(x) (((x) & LABEL_MASK) >> LABEL_SHIFT) 39*b636d99dSDavid van Moolenbroek #define MPLS_EXP(x) (((x) & EXP_MASK) >> EXP_SHIFT) 40*b636d99dSDavid van Moolenbroek #define MPLS_STACK(x) (((x) & STACK_MASK) >> STACK_SHIFT) 41*b636d99dSDavid van Moolenbroek #define MPLS_TTL(x) (((x) & TTL_MASK) >> TTL_SHIFT) 42