1/*
2 * Copyright (c) 1997 Yen Yen Lim and North Dakota State University
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 *    must display the following acknowledgement:
15 *      This product includes software developed by Yen Yen Lim and
16	North Dakota State University
17 * 4. The name of the author may not be used to endorse or promote products
18 *    derived from this software without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
21 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
22 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
23 * DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
24 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
25 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
26 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
28 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
29 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
30 * POSSIBILITY OF SUCH DAMAGE.
31 */
32#include <sys/cdefs.h>
33#ifndef lint
34#if 0
35static const char rcsid[] _U_ =
36    "@(#) Header: /tcpdump/master/tcpdump/print-sunatm.c,v 1.8 2004-03-17 23:24:38 guy Exp (LBL)";
37#else
38__RCSID("$NetBSD$");
39#endif
40#endif
41
42#ifdef HAVE_CONFIG_H
43#include "config.h"
44#endif
45
46#include <tcpdump-stdinc.h>
47
48struct mbuf;
49struct rtentry;
50
51#include <stdio.h>
52#include <pcap.h>
53
54#include "interface.h"
55#include "extract.h"
56#include "addrtoname.h"
57
58#include "atm.h"
59#include "atmuni31.h"
60
61/* SunATM header for ATM packet */
62#define DIR_POS		0	/* Direction (0x80 = transmit, 0x00 = receive) */
63#define VPI_POS		1	/* VPI */
64#define VCI_POS		2	/* VCI */
65#define PKT_BEGIN_POS   4	/* Start of the ATM packet */
66
67/* Protocol type values in the bottom for bits of the byte at SUNATM_DIR_POS. */
68#define PT_LANE		0x01	/* LANE */
69#define PT_LLC		0x02	/* LLC encapsulation */
70
71/*
72 * This is the top level routine of the printer.  'p' points
73 * to the SunATM pseudo-header for the packet, 'h->ts' is the timestamp,
74 * 'h->len' is the length of the packet off the wire, and 'h->caplen'
75 * is the number of bytes actually captured.
76 */
77u_int
78sunatm_if_print(const struct pcap_pkthdr *h, const u_char *p)
79{
80	u_int caplen = h->caplen;
81	u_int length = h->len;
82	u_short vci;
83	u_char vpi;
84	u_int traftype;
85
86	if (caplen < PKT_BEGIN_POS) {
87		printf("[|atm]");
88		return (caplen);
89	}
90
91	if (eflag) {
92		if (p[DIR_POS] & 0x80)
93			printf("Tx: ");
94		else
95			printf("Rx: ");
96	}
97
98	switch (p[DIR_POS] & 0x0f) {
99
100	case PT_LANE:
101		traftype = ATM_LANE;
102		break;
103
104	case PT_LLC:
105		traftype = ATM_LLC;
106		break;
107
108	default:
109		traftype = ATM_UNKNOWN;
110		break;
111	}
112
113	vci = EXTRACT_16BITS(&p[VCI_POS]);
114	vpi = p[VPI_POS];
115
116	p += PKT_BEGIN_POS;
117	caplen -= PKT_BEGIN_POS;
118	length -= PKT_BEGIN_POS;
119	atm_print(vpi, vci, traftype, p, length, caplen);
120
121	return (PKT_BEGIN_POS);
122}
123