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 1.27 2005-11-13 12:12:43 guy Exp $";
37 #include <tcpdump-stdinc.h>
43 #include "interface.h"
45 #include "addrtoname.h"
46 #include "ethertype.h"
51 /* Extract src, dst addresses */
53 extract_token_addrs(const struct token_header *trp, char *fsrc, char *fdst)
55 memcpy(fdst, (const char *)trp->token_dhost, 6);
56 memcpy(fsrc, (const char *)trp->token_shost, 6);
60 * Print the TR MAC header
63 token_hdr_print(register const struct token_header *trp, register u_int length,
64 register const u_char *fsrc, register const u_char *fdst)
66 const char *srcname, *dstname;
68 srcname = etheraddr_string(fsrc);
69 dstname = etheraddr_string(fdst);
72 (void) printf("%02x %02x %s %s %d: ",
78 printf("%s %s %d: ", srcname, dstname, length);
81 static const char *broadcast_indicator[] = {
82 "Non-Broadcast", "Non-Broadcast",
83 "Non-Broadcast", "Non-Broadcast",
84 "All-routes", "All-routes",
85 "Single-route", "Single-route"
88 static const char *direction[] = {
92 static const char *largest_frame[] = {
104 token_print(const u_char *p, u_int length, u_int caplen)
106 const struct token_header *trp;
107 u_short extracted_ethertype;
108 struct ether_header ehdr;
109 u_int route_len = 0, hdr_len = TOKEN_HDRLEN;
112 trp = (const struct token_header *)p;
114 if (caplen < TOKEN_HDRLEN) {
115 printf("[|token-ring]");
120 * Get the TR addresses into a canonical form
122 extract_token_addrs(trp, (char*)ESRC(&ehdr), (char*)EDST(&ehdr));
124 /* Adjust for source routing information in the MAC header */
125 if (IS_SOURCE_ROUTED(trp)) {
126 /* Clear source-routed bit */
127 *ESRC(&ehdr) &= 0x7f;
130 token_hdr_print(trp, length, ESRC(&ehdr), EDST(&ehdr));
132 if (caplen < TOKEN_HDRLEN + 2) {
133 printf("[|token-ring]");
136 route_len = RIF_LENGTH(trp);
137 hdr_len += route_len;
138 if (caplen < hdr_len) {
139 printf("[|token-ring]");
143 printf("%s ", broadcast_indicator[BROADCAST(trp)]);
144 printf("%s", direction[DIRECTION(trp)]);
146 for (seg = 0; seg < SEGMENT_COUNT(trp); seg++)
147 printf(" [%d:%d]", RING_NUMBER(trp, seg),
148 BRIDGE_NUMBER(trp, seg));
150 printf("rt = %x", EXTRACT_16BITS(&trp->token_rcf));
152 for (seg = 0; seg < SEGMENT_COUNT(trp); seg++)
153 printf(":%x", EXTRACT_16BITS(&trp->token_rseg[seg]));
155 printf(" (%s) ", largest_frame[LARGEST_FRAME(trp)]);
158 token_hdr_print(trp, length, ESRC(&ehdr), EDST(&ehdr));
161 /* Skip over token ring MAC header and routing information */
166 /* Frame Control field determines interpretation of packet */
167 if (FRAME_TYPE(trp) == TOKEN_FC_LLC) {
168 /* Try to print the LLC-layer header & higher layers */
169 if (llc_print(p, length, caplen, ESRC(&ehdr), EDST(&ehdr),
170 &extracted_ethertype) == 0) {
171 /* ether_type not known, print raw packet */
174 length + TOKEN_HDRLEN + route_len,
175 ESRC(&ehdr), EDST(&ehdr));
176 if (extracted_ethertype) {
178 etherproto_string(htons(extracted_ethertype)));
180 if (!suppress_default_print)
181 default_print(p, caplen);
184 /* Some kinds of TR packet we cannot handle intelligently */
185 /* XXX - dissect MAC packets if frame type is 0 */
187 token_hdr_print(trp, length + TOKEN_HDRLEN + route_len,
188 ESRC(&ehdr), EDST(&ehdr));
189 if (!suppress_default_print)
190 default_print(p, caplen);
196 * This is the top level routine of the printer. 'p' points
197 * to the TR header of the packet, 'h->ts' is the timestamp,
198 * 'h->len' is the length of the packet off the wire, and 'h->caplen'
199 * is the number of bytes actually captured.
202 token_if_print(const struct pcap_pkthdr *h, const u_char *p)
204 return (token_print(p, h->len, h->caplen));