1 | /* @(#) $Header: /tcpdump/master/tcpdump/token.h,v 1.6 2002-12-11 07:14:12 guy Exp $ (LBL) */ |
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2 | /* |
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3 | * Copyright (c) 1998, Larry Lile |
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4 | * All rights reserved. |
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5 | * |
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6 | * Redistribution and use in source and binary forms, with or without |
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7 | * modification, are permitted provided that the following conditions |
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8 | * are met: |
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9 | * 1. Redistributions of source code must retain the above copyright |
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10 | * notice unmodified, this list of conditions, and the following |
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11 | * disclaimer. |
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12 | * 2. Redistributions in binary form must reproduce the above copyright |
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13 | * notice, this list of conditions and the following disclaimer in the |
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14 | * documentation and/or other materials provided with the distribution. |
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15 | * |
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16 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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 | * $FreeBSD$ |
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29 | */ |
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30 | |
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31 | #define TOKEN_HDRLEN 14 |
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32 | #define TOKEN_RING_MAC_LEN 6 |
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33 | #define ROUTING_SEGMENT_MAX 16 |
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34 | #define IS_SOURCE_ROUTED(trp) ((trp)->token_shost[0] & 0x80) |
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35 | #define FRAME_TYPE(trp) (((trp)->token_fc & 0xC0) >> 6) |
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36 | #define TOKEN_FC_LLC 1 |
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37 | |
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38 | #define BROADCAST(trp) ((EXTRACT_16BITS(&(trp)->token_rcf) & 0xE000) >> 13) |
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39 | #define RIF_LENGTH(trp) ((EXTRACT_16BITS(&(trp)->token_rcf) & 0x1f00) >> 8) |
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40 | #define DIRECTION(trp) ((EXTRACT_16BITS(&(trp)->token_rcf) & 0x0080) >> 7) |
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41 | #define LARGEST_FRAME(trp) ((EXTRACT_16BITS(&(trp)->token_rcf) & 0x0070) >> 4) |
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42 | #define RING_NUMBER(trp, x) ((EXTRACT_16BITS(&(trp)->token_rseg[x]) & 0xfff0) >> 4) |
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43 | #define BRIDGE_NUMBER(trp, x) ((EXTRACT_16BITS(&(trp)->token_rseg[x]) & 0x000f)) |
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44 | #define SEGMENT_COUNT(trp) ((int)((RIF_LENGTH(trp) - 2) / 2)) |
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45 | |
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46 | struct token_header { |
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47 | u_int8_t token_ac; |
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48 | u_int8_t token_fc; |
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49 | u_int8_t token_dhost[TOKEN_RING_MAC_LEN]; |
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50 | u_int8_t token_shost[TOKEN_RING_MAC_LEN]; |
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51 | u_int16_t token_rcf; |
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52 | u_int16_t token_rseg[ROUTING_SEGMENT_MAX]; |
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53 | }; |
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