1*b636d99dSDavid van Moolenbroek /*
2*b636d99dSDavid van Moolenbroek * Copyright (c) 1997 Yen Yen Lim and North Dakota State University
3*b636d99dSDavid van Moolenbroek * All rights reserved.
4*b636d99dSDavid van Moolenbroek *
5*b636d99dSDavid van Moolenbroek * Redistribution and use in source and binary forms, with or without
6*b636d99dSDavid van Moolenbroek * modification, are permitted provided that the following conditions
7*b636d99dSDavid van Moolenbroek * are met:
8*b636d99dSDavid van Moolenbroek * 1. Redistributions of source code must retain the above copyright
9*b636d99dSDavid van Moolenbroek * notice, this list of conditions and the following disclaimer.
10*b636d99dSDavid van Moolenbroek * 2. Redistributions in binary form must reproduce the above copyright
11*b636d99dSDavid van Moolenbroek * notice, this list of conditions and the following disclaimer in the
12*b636d99dSDavid van Moolenbroek * documentation and/or other materials provided with the distribution.
13*b636d99dSDavid van Moolenbroek * 3. All advertising materials mentioning features or use of this software
14*b636d99dSDavid van Moolenbroek * must display the following acknowledgement:
15*b636d99dSDavid van Moolenbroek * This product includes software developed by Yen Yen Lim and
16*b636d99dSDavid van Moolenbroek North Dakota State University
17*b636d99dSDavid van Moolenbroek * 4. The name of the author may not be used to endorse or promote products
18*b636d99dSDavid van Moolenbroek * derived from this software without specific prior written permission.
19*b636d99dSDavid van Moolenbroek *
20*b636d99dSDavid van Moolenbroek * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
21*b636d99dSDavid van Moolenbroek * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
22*b636d99dSDavid van Moolenbroek * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
23*b636d99dSDavid van Moolenbroek * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
24*b636d99dSDavid van Moolenbroek * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
25*b636d99dSDavid van Moolenbroek * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
26*b636d99dSDavid van Moolenbroek * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27*b636d99dSDavid van Moolenbroek * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
28*b636d99dSDavid van Moolenbroek * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
29*b636d99dSDavid van Moolenbroek * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
30*b636d99dSDavid van Moolenbroek * POSSIBILITY OF SUCH DAMAGE.
31*b636d99dSDavid van Moolenbroek */
32*b636d99dSDavid van Moolenbroek
33*b636d99dSDavid van Moolenbroek #include <sys/cdefs.h>
34*b636d99dSDavid van Moolenbroek #ifndef lint
35*b636d99dSDavid van Moolenbroek __RCSID("$NetBSD: print-sunatm.c,v 1.4 2014/11/20 03:05:03 christos Exp $");
36*b636d99dSDavid van Moolenbroek #endif
37*b636d99dSDavid van Moolenbroek
38*b636d99dSDavid van Moolenbroek #define NETDISSECT_REWORKED
39*b636d99dSDavid van Moolenbroek #ifdef HAVE_CONFIG_H
40*b636d99dSDavid van Moolenbroek #include "config.h"
41*b636d99dSDavid van Moolenbroek #endif
42*b636d99dSDavid van Moolenbroek
43*b636d99dSDavid van Moolenbroek #include <tcpdump-stdinc.h>
44*b636d99dSDavid van Moolenbroek
45*b636d99dSDavid van Moolenbroek struct mbuf;
46*b636d99dSDavid van Moolenbroek struct rtentry;
47*b636d99dSDavid van Moolenbroek
48*b636d99dSDavid van Moolenbroek #include "interface.h"
49*b636d99dSDavid van Moolenbroek #include "extract.h"
50*b636d99dSDavid van Moolenbroek
51*b636d99dSDavid van Moolenbroek #include "atm.h"
52*b636d99dSDavid van Moolenbroek
53*b636d99dSDavid van Moolenbroek /* SunATM header for ATM packet */
54*b636d99dSDavid van Moolenbroek #define DIR_POS 0 /* Direction (0x80 = transmit, 0x00 = receive) */
55*b636d99dSDavid van Moolenbroek #define VPI_POS 1 /* VPI */
56*b636d99dSDavid van Moolenbroek #define VCI_POS 2 /* VCI */
57*b636d99dSDavid van Moolenbroek #define PKT_BEGIN_POS 4 /* Start of the ATM packet */
58*b636d99dSDavid van Moolenbroek
59*b636d99dSDavid van Moolenbroek /* Protocol type values in the bottom for bits of the byte at SUNATM_DIR_POS. */
60*b636d99dSDavid van Moolenbroek #define PT_LANE 0x01 /* LANE */
61*b636d99dSDavid van Moolenbroek #define PT_LLC 0x02 /* LLC encapsulation */
62*b636d99dSDavid van Moolenbroek
63*b636d99dSDavid van Moolenbroek /*
64*b636d99dSDavid van Moolenbroek * This is the top level routine of the printer. 'p' points
65*b636d99dSDavid van Moolenbroek * to the SunATM pseudo-header for the packet, 'h->ts' is the timestamp,
66*b636d99dSDavid van Moolenbroek * 'h->len' is the length of the packet off the wire, and 'h->caplen'
67*b636d99dSDavid van Moolenbroek * is the number of bytes actually captured.
68*b636d99dSDavid van Moolenbroek */
69*b636d99dSDavid van Moolenbroek u_int
sunatm_if_print(netdissect_options * ndo,const struct pcap_pkthdr * h,const u_char * p)70*b636d99dSDavid van Moolenbroek sunatm_if_print(netdissect_options *ndo,
71*b636d99dSDavid van Moolenbroek const struct pcap_pkthdr *h, const u_char *p)
72*b636d99dSDavid van Moolenbroek {
73*b636d99dSDavid van Moolenbroek u_int caplen = h->caplen;
74*b636d99dSDavid van Moolenbroek u_int length = h->len;
75*b636d99dSDavid van Moolenbroek u_short vci;
76*b636d99dSDavid van Moolenbroek u_char vpi;
77*b636d99dSDavid van Moolenbroek u_int traftype;
78*b636d99dSDavid van Moolenbroek
79*b636d99dSDavid van Moolenbroek if (caplen < PKT_BEGIN_POS) {
80*b636d99dSDavid van Moolenbroek ND_PRINT((ndo, "[|atm]"));
81*b636d99dSDavid van Moolenbroek return (caplen);
82*b636d99dSDavid van Moolenbroek }
83*b636d99dSDavid van Moolenbroek
84*b636d99dSDavid van Moolenbroek if (ndo->ndo_eflag) {
85*b636d99dSDavid van Moolenbroek ND_PRINT((ndo, p[DIR_POS] & 0x80 ? "Tx: " : "Rx: "));
86*b636d99dSDavid van Moolenbroek }
87*b636d99dSDavid van Moolenbroek
88*b636d99dSDavid van Moolenbroek switch (p[DIR_POS] & 0x0f) {
89*b636d99dSDavid van Moolenbroek
90*b636d99dSDavid van Moolenbroek case PT_LANE:
91*b636d99dSDavid van Moolenbroek traftype = ATM_LANE;
92*b636d99dSDavid van Moolenbroek break;
93*b636d99dSDavid van Moolenbroek
94*b636d99dSDavid van Moolenbroek case PT_LLC:
95*b636d99dSDavid van Moolenbroek traftype = ATM_LLC;
96*b636d99dSDavid van Moolenbroek break;
97*b636d99dSDavid van Moolenbroek
98*b636d99dSDavid van Moolenbroek default:
99*b636d99dSDavid van Moolenbroek traftype = ATM_UNKNOWN;
100*b636d99dSDavid van Moolenbroek break;
101*b636d99dSDavid van Moolenbroek }
102*b636d99dSDavid van Moolenbroek
103*b636d99dSDavid van Moolenbroek vci = EXTRACT_16BITS(&p[VCI_POS]);
104*b636d99dSDavid van Moolenbroek vpi = p[VPI_POS];
105*b636d99dSDavid van Moolenbroek
106*b636d99dSDavid van Moolenbroek p += PKT_BEGIN_POS;
107*b636d99dSDavid van Moolenbroek caplen -= PKT_BEGIN_POS;
108*b636d99dSDavid van Moolenbroek length -= PKT_BEGIN_POS;
109*b636d99dSDavid van Moolenbroek atm_print(ndo, vpi, vci, traftype, p, length, caplen);
110*b636d99dSDavid van Moolenbroek
111*b636d99dSDavid van Moolenbroek return (PKT_BEGIN_POS);
112*b636d99dSDavid van Moolenbroek }
113