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iftop

    1: /* @(#) $Header: /usr/local/www/users/anoncvs/cvs/embedaddon/iftop/token.h,v 1.1.1.1 2012/02/21 16:57:34 misho 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: };