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Annotation of embedaddon/iftop/token.h, revision 1.1

1.1     ! misho       1: /* @(#) $Header: /home/pdw/vcvs/repos/iftop/token.h,v 1.2 2003/06/06 22:42:35 pdw Exp $ (LBL) */
        !             2: /*
        !             3:  * Copyright (c) 1998, Larry Lile
        !             4:  * All rights reserved.
        !             5:  *
        !             6:  * Redistribution and use in source and binary forms, with or without
        !             7:  * modification, are permitted provided that the following conditions
        !             8:  * are met:
        !             9:  * 1. Redistributions of source code must retain the above copyright
        !            10:  *    notice unmodified, this list of conditions, and the following
        !            11:  *    disclaimer.
        !            12:  * 2. Redistributions in binary form must reproduce the above copyright
        !            13:  *    notice, this list of conditions and the following disclaimer in the
        !            14:  *    documentation and/or other materials provided with the distribution.
        !            15:  *
        !            16:  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
        !            17:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
        !            18:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
        !            19:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
        !            20:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
        !            21:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
        !            22:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
        !            23:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
        !            24:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
        !            25:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
        !            26:  * SUCH DAMAGE.
        !            27:  *
        !            28:  */
        !            29: 
        !            30: #define TOKEN_HDRLEN           14
        !            31: #define TOKEN_RING_MAC_LEN     6
        !            32: #define ROUTING_SEGMENT_MAX    16
        !            33: #define IS_SOURCE_ROUTED(trp)  ((trp)->token_shost[0] & 0x80)
        !            34: #define FRAME_TYPE(trp)                (((trp)->token_fc & 0xC0) >> 6)
        !            35: #define TOKEN_FC_LLC           1
        !            36: 
        !            37: #define BROADCAST(trp)         ((ntohs((trp)->token_rcf) & 0xE000) >> 13)
        !            38: #define RIF_LENGTH(trp)                ((ntohs((trp)->token_rcf) & 0x1f00) >> 8)
        !            39: #define DIRECTION(trp)         ((ntohs((trp)->token_rcf) & 0x0080) >> 7)
        !            40: #define LARGEST_FRAME(trp)     ((ntohs((trp)->token_rcf) & 0x0070) >> 4)
        !            41: #define RING_NUMBER(trp, x)    ((ntohs((trp)->token_rseg[x]) & 0xfff0) >> 4)
        !            42: #define BRIDGE_NUMBER(trp, x)  ((ntohs((trp)->token_rseg[x]) & 0x000f))
        !            43: #define SEGMENT_COUNT(trp)     ((RIF_LENGTH(trp) - 2) / 2)
        !            44: 
        !            45: struct token_header {
        !            46:        u_int8_t  token_ac;
        !            47:        u_int8_t  token_fc;
        !            48:        u_int8_t  token_dhost[TOKEN_RING_MAC_LEN];
        !            49:        u_int8_t  token_shost[TOKEN_RING_MAC_LEN];
        !            50:        u_int16_t token_rcf;
        !            51:        u_int16_t token_rseg[ROUTING_SEGMENT_MAX];
        !            52: };