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Annotation of embedaddon/iftop/token.h, revision 1.1.1.1

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: };