1 /* $OpenBSD: print-atm.c,v 1.6 2000/10/03 14:31:56 ho Exp $ */ 2 3 /* 4 * Copyright (c) 1994, 1995, 1996, 1997 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that: (1) source code distributions 9 * retain the above copyright notice and this paragraph in its entirety, (2) 10 * distributions including binary code include the above copyright notice and 11 * this paragraph in its entirety in the documentation or other materials 12 * provided with the distribution, and (3) all advertising materials mentioning 13 * features or use of this software display the following acknowledgement: 14 * ``This product includes software developed by the University of California, 15 * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of 16 * the University nor the names of its contributors may be used to endorse 17 * or promote products derived from this software without specific prior 18 * written permission. 19 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED 20 * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF 21 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. 22 */ 23 #ifndef lint 24 static const char rcsid[] = 25 "@(#) $Header: /home/cvs/src/usr.sbin/tcpdump/print-atm.c,v 1.6 2000/10/03 14:31:56 ho Exp $ (LBL)"; 26 #endif 27 28 #include <sys/param.h> 29 #include <sys/time.h> 30 #include <sys/socket.h> 31 32 #ifdef __STDC__ 33 struct mbuf; 34 struct rtentry; 35 #endif 36 #include <net/if.h> 37 38 #include <netinet/in.h> 39 #include <netinet/if_ether.h> 40 #include <netinet/in_systm.h> 41 #include <netinet/ip.h> 42 #include <netinet/ip_var.h> 43 #include <netinet/udp.h> 44 #include <netinet/udp_var.h> 45 #include <netinet/tcp.h> 46 47 #include <stdio.h> 48 #include <pcap.h> 49 50 #include "interface.h" 51 #include "addrtoname.h" 52 #include "ethertype.h" 53 54 /* 55 * This is the top level routine of the printer. 'p' is the points 56 * to the LLC/SNAP header of the packet, 'tvp' is the timestamp, 57 * 'length' is the length of the packet off the wire, and 'caplen' 58 * is the number of bytes actually captured. 59 */ 60 void 61 atm_if_print(u_char *user, const struct pcap_pkthdr *h, const u_char *p) 62 { 63 u_int caplen = h->caplen; 64 u_int length = h->len; 65 u_short ethertype; 66 67 ts_print(&h->ts); 68 69 if (caplen < 8) { 70 printf("[|atm]"); 71 goto out; 72 } 73 if (p[0] != 0xaa || p[1] != 0xaa || p[2] != 0x03) { 74 /*XXX assume 802.6 MAC header from fore driver */ 75 if (eflag) 76 printf("%04x%04x %04x%04x ", 77 p[0] << 24 | p[1] << 16 | p[2] << 8 | p[3], 78 p[4] << 24 | p[5] << 16 | p[6] << 8 | p[7], 79 p[8] << 24 | p[9] << 16 | p[10] << 8 | p[11], 80 p[12] << 24 | p[13] << 16 | p[14] << 8 | p[15]); 81 p += 20; 82 length -= 20; 83 caplen -= 20; 84 } 85 ethertype = p[6] << 8 | p[7]; 86 if (eflag) 87 printf("%02x %02x %02x %02x-%02x-%02x %04x: ", 88 p[0], p[1], p[2], /* dsap/ssap/ctrl */ 89 p[3], p[4], p[5], /* manufacturer's code */ 90 ethertype); 91 92 /* 93 * Some printers want to get back at the ethernet addresses, 94 * and/or check that they're not walking off the end of the packet. 95 * Rather than pass them all the way down, we set these globals. 96 */ 97 packetp = p; 98 snapend = p + caplen; 99 100 length -= 8; 101 caplen -= 8; 102 p += 8; 103 104 switch (ethertype) { 105 106 case ETHERTYPE_IP: 107 ip_print(p, length); 108 break; 109 110 #ifdef INET6 111 case ETHERTYPE_IPV6: 112 ip6_print(p, length); 113 break; 114 #endif /*INET6*/ 115 116 /*XXX this probably isn't right */ 117 case ETHERTYPE_ARP: 118 case ETHERTYPE_REVARP: 119 arp_print(p, length, caplen); 120 break; 121 #ifdef notyet 122 case ETHERTYPE_DN: 123 decnet_print(p, length, caplen); 124 break; 125 126 case ETHERTYPE_ATALK: 127 if (vflag) 128 fputs("et1 ", stdout); 129 atalk_print(p, length); 130 break; 131 132 case ETHERTYPE_AARP: 133 aarp_print(p, length); 134 break; 135 136 case ETHERTYPE_LAT: 137 case ETHERTYPE_MOPRC: 138 case ETHERTYPE_MOPDL: 139 /* default_print for now */ 140 #endif 141 default: 142 /* ether_type not known, print raw packet */ 143 if (!eflag) 144 printf("%02x %02x %02x %02x-%02x-%02x %04x: ", 145 p[0], p[1], p[2], /* dsap/ssap/ctrl */ 146 p[3], p[4], p[5], /* manufacturer's code */ 147 ethertype); 148 if (!xflag && !qflag) 149 default_print(p, caplen); 150 } 151 if (xflag) 152 default_print(p, caplen); 153 out: 154 putchar('\n'); 155 } 156