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/*
* Copyright (c) 1998, Larry Lile
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice unmodified, this list of conditions, and the following
* disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
*/
#define TOKEN_HDR_LEN 14
#define TOKEN_RING_MAC_LEN 6
#define ROUTING_SEGMENT_MAX 16
#define IS_SOURCE_ROUTED (tp->ether_shost[0] & 0x80)
#define BROADCAST ((ntohs(tp->rcf) & 0xE000) >> 13)
#define RIF_LENGTH ((ntohs(tp->rcf) & 0x1f00) >> 8)
#define DIRECTION ((ntohs(tp->rcf) & 0x0080) >> 7)
#define LARGEST_FRAME ((ntohs(tp->rcf) & 0x0070) >> 4)
#define RING_NUMBER(x) ((ntohs(tp->rseg[x]) & 0xfff0) >> 4)
#define BRIDGE_NUMBER(x) ((ntohs(tp->rseg[x]) & 0x000f))
#define SEGMENT_COUNT ((RIF_LENGTH - 2) / 2)
char *broadcast_indicator[] = { "Non-Broadcast", "Non-Broadcast",
"Non-Broadcast", "Non-Broadcast",
"All-routes", "All-routes",
"Single-route", "Single-route"};
char *direction[] = { "Forward", "Backward"};
char *largest_frame[] = { "516", "1500", "2052", "4472", "8144",
"11407", "17800", ""};
struct token_header {
u_char ac;
u_char fc;
u_char ether_dhost[TOKEN_RING_MAC_LEN];
u_char ether_shost[TOKEN_RING_MAC_LEN];
u_short rcf;
u_short rseg[ROUTING_SEGMENT_MAX];
};
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