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>
26 static const char rcsid[] =
27 "@(#) $Header: /home/ncvs/src/contrib/tcpdump/print-token.c,v 1.1 1999/02/20 11:17:55 julian Exp $";
30 #include <sys/param.h>
32 #include <sys/socket.h>
42 #include <netinet/in.h>
43 #include <net/ethernet.h>
44 #include <netinet/in_systm.h>
45 #include <netinet/ip.h>
46 #include <netinet/ip_var.h>
47 #include <netinet/udp.h>
48 #include <netinet/udp_var.h>
49 #include <netinet/tcp.h>
50 #include <netinet/tcpip.h>
55 #include "interface.h"
56 #include "addrtoname.h"
57 #include "ethertype.h"
60 const u_char *packetp;
61 const u_char *snapend;
64 token_print(register const u_char *bp, u_int length)
66 register const struct token_header *tp;
67 register const struct llc *lp;
70 tp = (const struct token_header *)bp;
71 lp = (struct llc *)(bp + TOKEN_HDR_LEN);
73 if (IS_SOURCE_ROUTED) {
74 tp->ether_shost[0] = tp->ether_shost[0] & 0x7f;
75 lp = (struct llc *)(bp + TOKEN_HDR_LEN + RIF_LENGTH);
79 * Ethertype on ethernet is a short, but ethertype in an llc-snap has
80 * been defined as 2 u_chars. This is a stupid little hack to fix
81 * this for now but something better should be done using ntohs()
84 ether_type = ((u_short)lp->ethertype[1] << 16) | lp->ethertype[0];
87 (void)printf("%s %s %d: ",
88 etheraddr_string(ESRC(tp)),
89 etheraddr_string(EDST(tp)),
92 (void)printf("%s %s %s %d: ",
93 etheraddr_string(ESRC(tp)),
94 etheraddr_string(EDST(tp)),
95 etherproto_string(ether_type),
100 * This is the top level routine of the printer. 'p' is the points
101 * to the ether header of the packet, 'tvp' is the timestamp,
102 * 'length' is the length of the packet off the wire, and 'caplen'
103 * is the number of bytes actually captured.
106 token_if_print(u_char *user, const struct pcap_pkthdr *h, const u_char *p)
108 u_int caplen = h->caplen;
109 u_int length = h->len;
110 struct token_header *tp;
112 u_short extracted_ethertype;
113 u_int route_len = 0, seg;
116 tp = (struct token_header *)p;
120 if (caplen < TOKEN_HDR_LEN) {
121 printf("[|token-ring]");
126 * Some printers want to get back at the ethernet addresses,
127 * and/or check that they're not walking off the end of the packet.
128 * Rather than pass them all the way down, we set these globals.
130 tp = (struct token_header *)p;
132 /* Adjust for source routing information in the MAC header */
133 if (IS_SOURCE_ROUTED) {
136 token_print(p, length);
138 route_len = RIF_LENGTH;
141 printf("ac %x fc %x ", tp->ac, tp->fc);
142 ether_type = ntohs((int)lp->ethertype);
144 printf("%s ", broadcast_indicator[BROADCAST]);
145 printf("%s", direction[DIRECTION]);
147 for (seg = 0; seg < SEGMENT_COUNT; seg++)
148 printf(" [%d:%d]", RING_NUMBER(seg), BRIDGE_NUMBER(seg));
150 printf("rt = %x", ntohs(tp->rcf));
152 for (seg = 0; seg < SEGMENT_COUNT; seg++)
153 printf(":%x", ntohs(tp->rseg[seg]));
155 printf(" (%s) ", largest_frame[LARGEST_FRAME]);
158 token_print(p, length);
161 /* Set pointer to llc header, adjusted for routing information */
162 lp = (struct llc *)(p + TOKEN_HDR_LEN + route_len);
165 snapend = p + caplen;
167 /* Skip over token ring MAC header */
168 length -= TOKEN_HDR_LEN + route_len;
169 caplen -= TOKEN_HDR_LEN + route_len;
170 p += TOKEN_HDR_LEN + route_len;
172 extracted_ethertype = 0;
173 /* Try to print the LLC-layer header & higher layers */
174 if (llc_print(p, length, caplen, ESRC(tp), EDST(tp), &extracted_ethertype) == 0) {
175 /* ether_type not known, print raw packet */
177 token_print((u_char *)tp, length);
178 if (extracted_ethertype) {
180 etherproto_string(htons(extracted_ethertype)));
182 if (!xflag && !qflag)
183 default_print(p, caplen);
186 default_print(p, caplen);