| 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 | #ifndef lint |
| 33 | static const char rcsid[] _U_ = |
| 34 | "@(#) $Header: /tcpdump/master/tcpdump/print-sunatm.c,v 1.8 2004-03-17 23:24:38 guy Exp $ (LBL)"; |
| 35 | #endif |
| 36 | |
| 37 | #ifdef HAVE_CONFIG_H |
| 38 | #include "config.h" |
| 39 | #endif |
| 40 | |
| 41 | #include <tcpdump-stdinc.h> |
| 42 | |
| 43 | struct mbuf; |
| 44 | struct rtentry; |
| 45 | |
| 46 | #include <stdio.h> |
| 47 | #include <pcap.h> |
| 48 | |
| 49 | #include "interface.h" |
| 50 | #include "extract.h" |
| 51 | #include "addrtoname.h" |
| 52 | |
| 53 | #include "atm.h" |
| 54 | #include "atmuni31.h" |
| 55 | |
| 56 | /* SunATM header for ATM packet */ |
| 57 | #define DIR_POS 0 /* Direction (0x80 = transmit, 0x00 = receive) */ |
| 58 | #define VPI_POS 1 /* VPI */ |
| 59 | #define VCI_POS 2 /* VCI */ |
| 60 | #define PKT_BEGIN_POS 4 /* Start of the ATM packet */ |
| 61 | |
| 62 | /* Protocol type values in the bottom for bits of the byte at SUNATM_DIR_POS. */ |
| 63 | #define PT_LANE 0x01 /* LANE */ |
| 64 | #define PT_LLC 0x02 /* LLC encapsulation */ |
| 65 | |
| 66 | /* |
| 67 | * This is the top level routine of the printer. 'p' points |
| 68 | * to the SunATM pseudo-header for the packet, 'h->ts' is the timestamp, |
| 69 | * 'h->len' is the length of the packet off the wire, and 'h->caplen' |
| 70 | * is the number of bytes actually captured. |
| 71 | */ |
| 72 | u_int |
| 73 | sunatm_if_print(const struct pcap_pkthdr *h, const u_char *p) |
| 74 | { |
| 75 | u_int caplen = h->caplen; |
| 76 | u_int length = h->len; |
| 77 | u_short vci; |
| 78 | u_char vpi; |
| 79 | u_int traftype; |
| 80 | |
| 81 | if (caplen < PKT_BEGIN_POS) { |
| 82 | printf("[|atm]"); |
| 83 | return (caplen); |
| 84 | } |
| 85 | |
| 86 | if (eflag) { |
| 87 | if (p[DIR_POS] & 0x80) |
| 88 | printf("Tx: "); |
| 89 | else |
| 90 | printf("Rx: "); |
| 91 | } |
| 92 | |
| 93 | switch (p[DIR_POS] & 0x0f) { |
| 94 | |
| 95 | case PT_LANE: |
| 96 | traftype = ATM_LANE; |
| 97 | break; |
| 98 | |
| 99 | case PT_LLC: |
| 100 | traftype = ATM_LLC; |
| 101 | break; |
| 102 | |
| 103 | default: |
| 104 | traftype = ATM_UNKNOWN; |
| 105 | break; |
| 106 | } |
| 107 | |
| 108 | vci = EXTRACT_16BITS(&p[VCI_POS]); |
| 109 | vpi = p[VPI_POS]; |
| 110 | |
| 111 | p += PKT_BEGIN_POS; |
| 112 | caplen -= PKT_BEGIN_POS; |
| 113 | length -= PKT_BEGIN_POS; |
| 114 | atm_print(vpi, vci, traftype, p, length, caplen); |
| 115 | |
| 116 | return (PKT_BEGIN_POS); |
| 117 | } |