1 /* 2 * Copyright (c) 1994, 1995, 1996 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 char rcsid[] = 23 "@(#) $Header: print-atm.c,v 1.7 96/07/23 14:17:21 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 #include <net/if.h> 35 36 #include <netinet/in.h> 37 #include <netinet/if_ether.h> 38 #include <netinet/in_systm.h> 39 #include <netinet/ip.h> 40 #include <netinet/ip_var.h> 41 #include <netinet/udp.h> 42 #include <netinet/udp_var.h> 43 #include <netinet/tcp.h> 44 #include <netinet/tcpip.h> 45 46 #include <stdio.h> 47 #include <pcap.h> 48 49 #include "addrtoname.h" 50 #include "ethertype.h" 51 #include "interface.h" 52 53 /* 54 * This is the top level routine of the printer. 'p' is the points 55 * to the LLC/SNAP header of the packet, 'tvp' is the timestamp, 56 * 'length' is the length of the packet off the wire, and 'caplen' 57 * is the number of bytes actually captured. 58 */ 59 void 60 atm_if_print(u_char *user, const struct pcap_pkthdr *h, const u_char *p) 61 { 62 u_int caplen = h->caplen; 63 u_int length = h->len; 64 u_short ethertype; 65 66 ts_print(&h->ts); 67 68 if (caplen < 8) { 69 printf("[|atm]"); 70 goto out; 71 } 72 if (p[0] != 0xaa || p[1] != 0xaa || p[2] != 0x03) { 73 /*XXX assume 802.6 MAC header from fore driver */ 74 if (eflag) 75 printf("%04x%04x %04x%04x ", 76 p[0] << 24 | p[1] << 16 | p[2] << 8 | p[3], 77 p[4] << 24 | p[5] << 16 | p[6] << 8 | p[7], 78 p[8] << 24 | p[9] << 16 | p[10] << 8 | p[11], 79 p[12] << 24 | p[13] << 16 | p[14] << 8 | p[15]); 80 p += 20; 81 length -= 20; 82 caplen -= 20; 83 } 84 ethertype = p[6] << 8 | p[7]; 85 if (eflag) 86 printf("%02x %02x %02x %02x-%02x-%02x %04x: ", 87 p[0], p[1], p[2], /* dsap/ssap/ctrl */ 88 p[3], p[4], p[5], /* manufacturer's code */ 89 ethertype); 90 91 /* 92 * Some printers want to get back at the ethernet addresses, 93 * and/or check that they're not walking off the end of the packet. 94 * Rather than pass them all the way down, we set these globals. 95 */ 96 packetp = p; 97 snapend = p + caplen; 98 99 length -= 8; 100 caplen -= 8; 101 p += 8; 102 103 switch (ethertype) { 104 105 case ETHERTYPE_IP: 106 ip_print(p, length); 107 break; 108 109 /*XXX this probably isn't right */ 110 case ETHERTYPE_ARP: 111 case ETHERTYPE_REVARP: 112 arp_print(p, length, caplen); 113 break; 114 #ifdef notyet 115 case ETHERTYPE_DN: 116 decnet_print(p, length, caplen); 117 break; 118 119 case ETHERTYPE_ATALK: 120 if (vflag) 121 fputs("et1 ", stdout); 122 atalk_print(p, length); 123 break; 124 125 case ETHERTYPE_AARP: 126 aarp_print(p, length); 127 break; 128 129 case ETHERTYPE_LAT: 130 case ETHERTYPE_MOPRC: 131 case ETHERTYPE_MOPDL: 132 /* default_print for now */ 133 #endif 134 default: 135 /* ether_type not known, print raw packet */ 136 if (!eflag) 137 printf("%02x %02x %02x %02x-%02x-%02x %04x: ", 138 p[0], p[1], p[2], /* dsap/ssap/ctrl */ 139 p[3], p[4], p[5], /* manufacturer's code */ 140 ethertype); 141 if (!xflag && !qflag) 142 default_print(p, caplen); 143 } 144 if (xflag) 145 default_print(p, caplen); 146 out: 147 putchar('\n'); 148 } 149