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 #ifndef lint 22 static const char rcsid[] = 23 "@(#) $Header: print-atm.c,v 1.9 97/05/28 12:52:40 leres Exp $ (LBL)"; 24 #endif 25 26 #include <sys/param.h> 27 #include <sys/time.h> 28 #include <sys/socket.h> 29 30 #if __STDC__ 31 struct mbuf; 32 struct rtentry; 33 #endif 34 35 #include <net/if.h> 36 #include <net/if_var.h> 37 38 #include <netinet/in.h> 39 #include <net/ethernet.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 #include <netinet/tcpip.h> 47 48 #include <stdio.h> 49 #include <pcap.h> 50 51 #include "interface.h" 52 #include "addrtoname.h" 53 #include "ethertype.h" 54 55 /* 56 * This is the top level routine of the printer. 'p' is the points 57 * to the LLC/SNAP header of the packet, 'tvp' is the timestamp, 58 * 'length' is the length of the packet off the wire, and 'caplen' 59 * is the number of bytes actually captured. 60 */ 61 void 62 atm_if_print(u_char *user, const struct pcap_pkthdr *h, const u_char *p) 63 { 64 u_int caplen = h->caplen; 65 u_int length = h->len; 66 u_short ethertype; 67 68 ts_print(&h->ts); 69 70 if (caplen < 8) { 71 printf("[|atm]"); 72 goto out; 73 } 74 75 if (p[4] == 0xaa || p[5] == 0xaa || p[6] == 0x03) { 76 /* if first 4 bytes are cookie/vpci */ 77 if (eflag) { 78 printf("%04x ", 79 p[0] << 24 | p[1] << 16 | p[2] << 8 | p[3]); 80 } 81 p += 4; 82 length -= 4; 83 caplen -= 4; 84 } 85 else if (p[0] != 0xaa || p[1] != 0xaa || p[2] != 0x03) { 86 /*XXX assume 802.6 MAC header from fore driver */ 87 if (eflag) 88 printf("%04x%04x %04x%04x ", 89 p[0] << 24 | p[1] << 16 | p[2] << 8 | p[3], 90 p[4] << 24 | p[5] << 16 | p[6] << 8 | p[7], 91 p[8] << 24 | p[9] << 16 | p[10] << 8 | p[11], 92 p[12] << 24 | p[13] << 16 | p[14] << 8 | p[15]); 93 p += 20; 94 length -= 20; 95 caplen -= 20; 96 } 97 ethertype = p[6] << 8 | p[7]; 98 if (eflag) 99 printf("%02x %02x %02x %02x-%02x-%02x %04x: ", 100 p[0], p[1], p[2], /* dsap/ssap/ctrl */ 101 p[3], p[4], p[5], /* manufacturer's code */ 102 ethertype); 103 104 /* 105 * Some printers want to get back at the ethernet addresses, 106 * and/or check that they're not walking off the end of the packet. 107 * Rather than pass them all the way down, we set these globals. 108 */ 109 packetp = p; 110 snapend = p + caplen; 111 112 length -= 8; 113 caplen -= 8; 114 p += 8; 115 116 switch (ethertype) { 117 118 case ETHERTYPE_IP: 119 ip_print(p, length); 120 break; 121 122 /*XXX this probably isn't right */ 123 case ETHERTYPE_ARP: 124 case ETHERTYPE_REVARP: 125 arp_print(p, length, caplen); 126 break; 127 #ifdef notyet 128 case ETHERTYPE_DN: 129 decnet_print(p, length, caplen); 130 break; 131 132 case ETHERTYPE_ATALK: 133 if (vflag) 134 fputs("et1 ", stdout); 135 atalk_print(p, length); 136 break; 137 138 case ETHERTYPE_AARP: 139 aarp_print(p, length); 140 break; 141 142 case ETHERTYPE_LAT: 143 case ETHERTYPE_MOPRC: 144 case ETHERTYPE_MOPDL: 145 /* default_print for now */ 146 #endif 147 default: 148 /* ether_type not known, forward it to llc_print */ 149 if (!eflag) 150 printf("%02x %02x %02x %02x-%02x-%02x %04x: ", 151 p[0], p[1], p[2], /* dsap/ssap/ctrl */ 152 p[3], p[4], p[5], /* manufacturer's code */ 153 ethertype); 154 if (!xflag && !qflag) 155 /* default_print(p, caplen); */ 156 llc_print(p-8,length+8,caplen+8,"000000","000000"); 157 } 158 if (xflag) 159 default_print(p, caplen); 160 out: 161 putchar('\n'); 162 } 163