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: };
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