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: llc.h,v 1.6 97/06/13 02:06:07 leres 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_char dsap; 36 u_char ssap; 37 union { 38 u_char u_ctl; 39 u_short is_ctl; 40 struct { 41 u_char snap_ui; 42 u_char snap_pi[5]; 43 } snap; 44 struct { 45 u_char snap_ui; 46 u_char snap_orgcode[3]; 47 u_char 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 orgcode ctl.snap_ether.snap_orgcode 55 #define 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 0x0001 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) >> 10) & 0x03) 78 #define LLC_RR 0x0100 79 #define LLC_RNR 0x0500 80 #define LLC_REJ 0x0900 81 82 #define LLC_IS_NR(is) (((is) >> 1) & 0x7f) 83 #define LLC_I_NS(is) (((is) >> 9) & 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 92 #define LLCSAP_8021B_I 0x02 93 #endif 94 #ifndef LLCSAP_8021B 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_ISONS 119 #define LLCSAP_ISONS 0xfe 120 #endif 121