1 /* 2 * Copyright (c) 1993, 1994, 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 * @(#) $Header: /tcpdump/master/tcpdump/llc.h,v 1.16 2002/12/11 07:13:54 guy Exp $ (LBL) 22 */ 23 24 /* 25 * This stuff should come from a system header file, but there's no 26 * obviously portable way to do that and it's not really going 27 * to change from system to system. 28 */ 29 30 /* 31 * A somewhat abstracted view of the LLC header 32 */ 33 34 struct llc { 35 u_int8_t dsap; 36 u_int8_t ssap; 37 union { 38 u_int8_t u_ctl; 39 u_int16_t is_ctl; 40 struct { 41 u_int8_t snap_ui; 42 u_int8_t snap_pi[5]; 43 } snap; 44 struct { 45 u_int8_t snap_ui; 46 u_int8_t snap_orgcode[3]; 47 u_int8_t snap_ethertype[2]; 48 } snap_ether; 49 } ctl; 50 }; 51 52 #define llcui ctl.snap.snap_ui 53 #define llcpi ctl.snap.snap_pi 54 #define llc_orgcode ctl.snap_ether.snap_orgcode 55 #define llc_ethertype ctl.snap_ether.snap_ethertype 56 #define llcis ctl.is_ctl 57 #define llcu ctl.u_ctl 58 59 #define LLC_U_FMT 3 60 #define LLC_GSAP 1 61 #define LLC_S_FMT 1 62 63 #define LLC_U_POLL 0x10 64 #define LLC_IS_POLL 0x0100 65 #define LLC_XID_FI 0x81 66 67 #define LLC_U_CMD(u) ((u) & 0xef) 68 #define LLC_UI 0x03 69 #define LLC_UA 0x63 70 #define LLC_DISC 0x43 71 #define LLC_DM 0x0f 72 #define LLC_SABME 0x6f 73 #define LLC_TEST 0xe3 74 #define LLC_XID 0xaf 75 #define LLC_FRMR 0x87 76 77 #define LLC_S_CMD(is) (((is) >> 1) & 0x03) 78 #define LLC_RR 0x0001 79 #define LLC_RNR 0x0005 80 #define LLC_REJ 0x0009 81 82 #define LLC_IS_NR(is) (((is) >> 9) & 0x7f) 83 #define LLC_I_NS(is) (((is) >> 1) & 0x7f) 84 85 #ifndef LLCSAP_NULL 86 #define LLCSAP_NULL 0x00 87 #endif 88 #ifndef LLCSAP_GLOBAL 89 #define LLCSAP_GLOBAL 0xff 90 #endif 91 #ifndef LLCSAP_8021B_I 92 #define LLCSAP_8021B_I 0x02 93 #endif 94 #ifndef LLCSAP_8021B_G 95 #define LLCSAP_8021B_G 0x03 96 #endif 97 #ifndef LLCSAP_IP 98 #define LLCSAP_IP 0x06 99 #endif 100 #ifndef LLCSAP_PROWAYNM 101 #define LLCSAP_PROWAYNM 0x0e 102 #endif 103 #ifndef LLCSAP_8021D 104 #define LLCSAP_8021D 0x42 105 #endif 106 #ifndef LLCSAP_RS511 107 #define LLCSAP_RS511 0x4e 108 #endif 109 #ifndef LLCSAP_ISO8208 110 #define LLCSAP_ISO8208 0x7e 111 #endif 112 #ifndef LLCSAP_PROWAY 113 #define LLCSAP_PROWAY 0x8e 114 #endif 115 #ifndef LLCSAP_SNAP 116 #define LLCSAP_SNAP 0xaa 117 #endif 118 #ifndef LLCSAP_IPX 119 #define LLCSAP_IPX 0xe0 120 #endif 121 #ifndef LLCSAP_NETBEUI 122 #define LLCSAP_NETBEUI 0xf0 123 #endif 124 #ifndef LLCSAP_ISONS 125 #define LLCSAP_ISONS 0xfe 126 #endif 127 128 #define OUI_ENCAP_ETHER 0x000000 /* encapsulated Ethernet */ 129 #define OUI_CISCO 0x00000c /* Cisco protocols */ 130 #define OUI_CISCO_90 0x0000f8 /* Cisco bridging */ 131 #define OUI_RFC2684 0x0080c2 /* RFC 2684 bridged Ethernet */ 132 #define OUI_APPLETALK 0x080007 /* Appletalk */ 133 134 /* 135 * PIDs for use with OUI_CISCO. 136 */ 137 #define PID_CISCO_CDP 0x2000 /* Cisco Discovery Protocol */ 138 139 /* 140 * PIDs for use with OUI_RFC2684. 141 */ 142 #define PID_RFC2684_ETH_FCS 0x0001 /* Ethernet, with FCS */ 143 #define PID_RFC2684_ETH_NOFCS 0x0007 /* Ethernet, without FCS */ 144 #define PID_RFC2684_802_4_FCS 0x0002 /* 802.4, with FCS */ 145 #define PID_RFC2684_802_4_NOFCS 0x0008 /* 802.4, without FCS */ 146 #define PID_RFC2684_802_5_FCS 0x0003 /* 802.5, with FCS */ 147 #define PID_RFC2684_802_5_NOFCS 0x0009 /* 802.5, without FCS */ 148 #define PID_RFC2684_FDDI_FCS 0x0004 /* FDDI, with FCS */ 149 #define PID_RFC2684_FDDI_NOFCS 0x000a /* FDDI, without FCS */ 150 #define PID_RFC2684_802_6_FCS 0x0005 /* 802.6, with FCS */ 151 #define PID_RFC2684_802_6_NOFCS 0x000b /* 802.6, without FCS */ 152 #define PID_RFC2684_BPDU 0x000e /* BPDUs */ 153 154