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>
29 static const char rcsid[] _U_ =
30 "@(#) $Header: /tcpdump/master/tcpdump/print-token.c,v 1.25.2.2 2005/11/13 12:13:01 guy Exp $";
37 #include <tcpdump-stdinc.h>
43 #include "interface.h"
44 #include "addrtoname.h"
45 #include "ethertype.h"
50 /* Extract src, dst addresses */
52 extract_token_addrs(const struct token_header *trp, char *fsrc, char *fdst)
54 memcpy(fdst, (const char *)trp->token_dhost, 6);
55 memcpy(fsrc, (const char *)trp->token_shost, 6);
59 * Print the TR MAC header
62 token_hdr_print(register const struct token_header *trp, register u_int length,
63 register const u_char *fsrc, register const u_char *fdst)
65 const char *srcname, *dstname;
67 srcname = etheraddr_string(fsrc);
68 dstname = etheraddr_string(fdst);
71 (void) printf("%02x %02x %s %s %d: ",
77 printf("%s %s %d: ", srcname, dstname, length);
80 static const char *broadcast_indicator[] = {
81 "Non-Broadcast", "Non-Broadcast",
82 "Non-Broadcast", "Non-Broadcast",
83 "All-routes", "All-routes",
84 "Single-route", "Single-route"
87 static const char *direction[] = {
91 static const char *largest_frame[] = {
103 token_print(const u_char *p, u_int length, u_int caplen)
105 const struct token_header *trp;
106 u_short extracted_ethertype;
107 struct ether_header ehdr;
108 u_int route_len = 0, hdr_len = TOKEN_HDRLEN;
111 trp = (const struct token_header *)p;
113 if (caplen < TOKEN_HDRLEN) {
114 printf("[|token-ring]");
119 * Get the TR addresses into a canonical form
121 extract_token_addrs(trp, (char*)ESRC(&ehdr), (char*)EDST(&ehdr));
123 /* Adjust for source routing information in the MAC header */
124 if (IS_SOURCE_ROUTED(trp)) {
125 /* Clear source-routed bit */
126 *ESRC(&ehdr) &= 0x7f;
129 token_hdr_print(trp, length, ESRC(&ehdr), EDST(&ehdr));
131 route_len = RIF_LENGTH(trp);
133 printf("%s ", broadcast_indicator[BROADCAST(trp)]);
134 printf("%s", direction[DIRECTION(trp)]);
136 for (seg = 0; seg < SEGMENT_COUNT(trp); seg++)
137 printf(" [%d:%d]", RING_NUMBER(trp, seg),
138 BRIDGE_NUMBER(trp, seg));
140 printf("rt = %x", ntohs(trp->token_rcf));
142 for (seg = 0; seg < SEGMENT_COUNT(trp); seg++)
143 printf(":%x", ntohs(trp->token_rseg[seg]));
145 printf(" (%s) ", largest_frame[LARGEST_FRAME(trp)]);
148 token_hdr_print(trp, length, ESRC(&ehdr), EDST(&ehdr));
151 /* Skip over token ring MAC header and routing information */
152 hdr_len += route_len;
157 /* Frame Control field determines interpretation of packet */
158 if (FRAME_TYPE(trp) == TOKEN_FC_LLC) {
159 /* Try to print the LLC-layer header & higher layers */
160 if (llc_print(p, length, caplen, ESRC(&ehdr), EDST(&ehdr),
161 &extracted_ethertype) == 0) {
162 /* ether_type not known, print raw packet */
165 length + TOKEN_HDRLEN + route_len,
166 ESRC(&ehdr), EDST(&ehdr));
167 if (extracted_ethertype) {
169 etherproto_string(htons(extracted_ethertype)));
171 if (!suppress_default_print)
172 default_print(p, caplen);
175 /* Some kinds of TR packet we cannot handle intelligently */
176 /* XXX - dissect MAC packets if frame type is 0 */
178 token_hdr_print(trp, length + TOKEN_HDRLEN + route_len,
179 ESRC(&ehdr), EDST(&ehdr));
180 if (!suppress_default_print)
181 default_print(p, caplen);
187 * This is the top level routine of the printer. 'p' points
188 * to the TR header of the packet, 'h->ts' is the timestamp,
189 * 'h->len' is the length of the packet off the wire, and 'h->caplen'
190 * is the number of bytes actually captured.
193 token_if_print(const struct pcap_pkthdr *h, const u_char *p)
195 return (token_print(p, h->len, h->caplen));