1 | /* @(#) $Header: /tcpdump/master/tcpdump/mpls.h,v 1.1 2004-06-14 14:47:58 hannes Exp $ (LBL) |
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2 | * Copyright (C) 2001 WIDE Project. All rights reserved. |
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3 | * |
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4 | * Redistribution and use in source and binary forms, with or without |
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5 | * modification, are permitted provided that the following conditions |
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6 | * are met: |
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7 | * 1. Redistributions of source code must retain the above copyright |
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8 | * notice, this list of conditions and the following disclaimer. |
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9 | * 2. Redistributions in binary form must reproduce the above copyright |
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10 | * notice, this list of conditions and the following disclaimer in the |
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11 | * documentation and/or other materials provided with the distribution. |
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12 | * 3. Neither the name of the project nor the names of its contributors |
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13 | * may be used to endorse or promote products derived from this software |
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14 | * without specific prior written permission. |
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15 | * |
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16 | * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND |
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17 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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18 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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19 | * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE |
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20 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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21 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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22 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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23 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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24 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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25 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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26 | * SUCH DAMAGE. |
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27 | */ |
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28 | |
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29 | #define LABEL_MASK 0xfffff000 |
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30 | #define LABEL_SHIFT 12 |
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31 | #define EXP_MASK 0x00000e00 |
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32 | #define EXP_SHIFT 9 |
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33 | #define STACK_MASK 0x00000100 |
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34 | #define STACK_SHIFT 8 |
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35 | #define TTL_MASK 0x000000ff |
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36 | #define TTL_SHIFT 0 |
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37 | |
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38 | #define MPLS_LABEL(x) (((x) & LABEL_MASK) >> LABEL_SHIFT) |
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39 | #define MPLS_EXP(x) (((x) & EXP_MASK) >> EXP_SHIFT) |
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40 | #define MPLS_STACK(x) (((x) & STACK_MASK) >> STACK_SHIFT) |
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41 | #define MPLS_TTL(x) (((x) & TTL_MASK) >> TTL_SHIFT) |
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