1 /* 2 * Copyright (c) 1994, 1995, 1996, 1997 3 * The Regents of the University of California. All rights reserved. 4 * 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 16 * written permission. 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. 20 * 21 * $FreeBSD$ 22 */ 23 #ifndef lint 24 static const char rcsid[] = 25 "@(#) $Header: /tcpdump/master/tcpdump/print-atm.c,v 1.12 1999/11/21 09:36:48 fenner Exp $ (LBL)"; 26 #endif 27 28 #ifdef HAVE_CONFIG_H 29 #include "config.h" 30 #endif 31 32 #include <sys/param.h> 33 #include <sys/time.h> 34 #include <sys/socket.h> 35 36 #if __STDC__ 37 struct mbuf; 38 struct rtentry; 39 #endif 40 41 #include <net/if.h> 42 #include <net/if_var.h> 43 44 #include <netinet/in.h> 45 #include <net/ethernet.h> 46 #include <netinet/in_systm.h> 47 #include <netinet/ip.h> 48 #include <netinet/ip_var.h> 49 #include <netinet/udp.h> 50 #include <netinet/udp_var.h> 51 #include <netinet/tcp.h> 52 53 #include <stdio.h> 54 #include <pcap.h> 55 56 #include "interface.h" 57 #include "addrtoname.h" 58 #include "ethertype.h" 59 60 /* 61 * This is the top level routine of the printer. 'p' is the points 62 * to the LLC/SNAP header of the packet, 'tvp' is the timestamp, 63 * 'length' is the length of the packet off the wire, and 'caplen' 64 * is the number of bytes actually captured. 65 */ 66 void 67 atm_if_print(u_char *user, const struct pcap_pkthdr *h, const u_char *p) 68 { 69 u_int caplen = h->caplen; 70 u_int length = h->len; 71 u_short ethertype; 72 73 ts_print(&h->ts); 74 75 if (caplen < 8) { 76 printf("[|atm]"); 77 goto out; 78 } 79 80 if (p[4] == 0xaa || p[5] == 0xaa || p[6] == 0x03) { 81 /* if first 4 bytes are cookie/vpci */ 82 if (eflag) { 83 printf("%04x ", 84 p[0] << 24 | p[1] << 16 | p[2] << 8 | p[3]); 85 } 86 p += 4; 87 length -= 4; 88 caplen -= 4; 89 } 90 else if (p[0] != 0xaa || p[1] != 0xaa || p[2] != 0x03) { 91 /*XXX assume 802.6 MAC header from fore driver */ 92 if (eflag) 93 printf("%04x%04x %04x%04x ", 94 p[0] << 24 | p[1] << 16 | p[2] << 8 | p[3], 95 p[4] << 24 | p[5] << 16 | p[6] << 8 | p[7], 96 p[8] << 24 | p[9] << 16 | p[10] << 8 | p[11], 97 p[12] << 24 | p[13] << 16 | p[14] << 8 | p[15]); 98 p += 20; 99 length -= 20; 100 caplen -= 20; 101 } 102 ethertype = p[6] << 8 | p[7]; 103 if (eflag) 104 printf("%02x %02x %02x %02x-%02x-%02x %04x: ", 105 p[0], p[1], p[2], /* dsap/ssap/ctrl */ 106 p[3], p[4], p[5], /* manufacturer's code */ 107 ethertype); 108 109 /* 110 * Some printers want to get back at the ethernet addresses, 111 * and/or check that they're not walking off the end of the packet. 112 * Rather than pass them all the way down, we set these globals. 113 */ 114 packetp = p; 115 snapend = p + caplen; 116 117 length -= 8; 118 caplen -= 8; 119 p += 8; 120 121 switch (ethertype) { 122 123 case ETHERTYPE_IP: 124 ip_print(p, length); 125 break; 126 127 #ifdef INET6 128 case ETHERTYPE_IPV6: 129 ip6_print(p, length); 130 break; 131 #endif /*INET6*/ 132 133 /*XXX this probably isn't right */ 134 case ETHERTYPE_ARP: 135 case ETHERTYPE_REVARP: 136 arp_print(p, length, caplen); 137 break; 138 #ifdef notyet 139 case ETHERTYPE_DN: 140 decnet_print(p, length, caplen); 141 break; 142 143 case ETHERTYPE_ATALK: 144 if (vflag) 145 fputs("et1 ", stdout); 146 atalk_print(p, length); 147 break; 148 149 case ETHERTYPE_AARP: 150 aarp_print(p, length); 151 break; 152 153 case ETHERTYPE_LAT: 154 case ETHERTYPE_MOPRC: 155 case ETHERTYPE_MOPDL: 156 /* default_print for now */ 157 #endif 158 default: 159 /* ether_type not known, forward it to llc_print */ 160 if (!eflag) 161 printf("%02x %02x %02x %02x-%02x-%02x %04x: ", 162 p[0], p[1], p[2], /* dsap/ssap/ctrl */ 163 p[3], p[4], p[5], /* manufacturer's code */ 164 ethertype); 165 if (!xflag && !qflag) 166 /* default_print(p, caplen); */ 167 llc_print(p-8,length+8,caplen+8,"000000","000000"); 168 } 169 if (xflag) 170 default_print(p, caplen); 171 out: 172 putchar('\n'); 173 } 174