2 * Copyright (c) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996
3 * The Regents of the University of California. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that: (1) source code distributions
7 * retain the above copyright notice and this paragraph in its entirety, (2)
8 * distributions including binary code include the above copyright notice and
9 * this paragraph in its entirety in the documentation or other materials
10 * provided with the distribution, and (3) all advertising materials mentioning
11 * features or use of this software display the following acknowledgement:
12 * ``This product includes software developed by the University of California,
13 * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
14 * the University nor the names of its contributors may be used to endorse
15 * or promote products derived from this software without specific prior
17 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
18 * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
19 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
21 * Hacked version of print-ether.c Larry Lile <lile@stdio.com>
23 * Further tweaked to more closely resemble print-fddi.c
24 * Guy Harris <guy@alum.mit.edu>
27 static const char rcsid[] _U_ =
28 "@(#) $Header: /tcpdump/master/tcpdump/print-token.c,v 1.25.2.1 2005/07/07 01:24:40 guy Exp $";
35 #include <tcpdump-stdinc.h>
41 #include "interface.h"
42 #include "addrtoname.h"
43 #include "ethertype.h"
48 /* Extract src, dst addresses */
50 extract_token_addrs(const struct token_header *trp, char *fsrc, char *fdst)
52 memcpy(fdst, (const char *)trp->token_dhost, 6);
53 memcpy(fsrc, (const char *)trp->token_shost, 6);
57 * Print the TR MAC header
60 token_hdr_print(register const struct token_header *trp, register u_int length,
61 register const u_char *fsrc, register const u_char *fdst)
63 const char *srcname, *dstname;
65 srcname = etheraddr_string(fsrc);
66 dstname = etheraddr_string(fdst);
69 (void) printf("%02x %02x %s %s %d: ",
75 printf("%s %s %d: ", srcname, dstname, length);
78 static const char *broadcast_indicator[] = {
79 "Non-Broadcast", "Non-Broadcast",
80 "Non-Broadcast", "Non-Broadcast",
81 "All-routes", "All-routes",
82 "Single-route", "Single-route"
85 static const char *direction[] = {
89 static const char *largest_frame[] = {
101 token_print(const u_char *p, u_int length, u_int caplen)
103 const struct token_header *trp;
104 u_short extracted_ethertype;
105 struct ether_header ehdr;
106 u_int route_len = 0, hdr_len = TOKEN_HDRLEN;
109 trp = (const struct token_header *)p;
111 if (caplen < TOKEN_HDRLEN) {
112 printf("[|token-ring]");
117 * Get the TR addresses into a canonical form
119 extract_token_addrs(trp, (char*)ESRC(&ehdr), (char*)EDST(&ehdr));
121 /* Adjust for source routing information in the MAC header */
122 if (IS_SOURCE_ROUTED(trp)) {
123 /* Clear source-routed bit */
124 *ESRC(&ehdr) &= 0x7f;
127 token_hdr_print(trp, length, ESRC(&ehdr), EDST(&ehdr));
129 route_len = RIF_LENGTH(trp);
131 printf("%s ", broadcast_indicator[BROADCAST(trp)]);
132 printf("%s", direction[DIRECTION(trp)]);
134 for (seg = 0; seg < SEGMENT_COUNT(trp); seg++)
135 printf(" [%d:%d]", RING_NUMBER(trp, seg),
136 BRIDGE_NUMBER(trp, seg));
138 printf("rt = %x", ntohs(trp->token_rcf));
140 for (seg = 0; seg < SEGMENT_COUNT(trp); seg++)
141 printf(":%x", ntohs(trp->token_rseg[seg]));
143 printf(" (%s) ", largest_frame[LARGEST_FRAME(trp)]);
146 token_hdr_print(trp, length, ESRC(&ehdr), EDST(&ehdr));
149 /* Skip over token ring MAC header and routing information */
150 hdr_len += route_len;
155 /* Frame Control field determines interpretation of packet */
156 extracted_ethertype = 0;
157 if (FRAME_TYPE(trp) == TOKEN_FC_LLC) {
158 /* Try to print the LLC-layer header & higher layers */
159 if (llc_print(p, length, caplen, ESRC(&ehdr), EDST(&ehdr),
160 &extracted_ethertype) == 0) {
161 /* ether_type not known, print raw packet */
164 length + TOKEN_HDRLEN + route_len,
165 ESRC(&ehdr), EDST(&ehdr));
166 if (extracted_ethertype) {
168 etherproto_string(htons(extracted_ethertype)));
170 if (!suppress_default_print)
171 default_print(p, caplen);
174 /* Some kinds of TR packet we cannot handle intelligently */
175 /* XXX - dissect MAC packets if frame type is 0 */
177 token_hdr_print(trp, length + TOKEN_HDRLEN + route_len,
178 ESRC(&ehdr), EDST(&ehdr));
179 if (!suppress_default_print)
180 default_print(p, caplen);
186 * This is the top level routine of the printer. 'p' points
187 * to the TR header of the packet, 'h->ts' is the timestamp,
188 * 'h->len' is the length of the packet off the wire, and 'h->caplen'
189 * is the number of bytes actually captured.
192 token_if_print(const struct pcap_pkthdr *h, const u_char *p)
194 return (token_print(p, h->len, h->caplen));