1 /* $OpenBSD: fddi.h,v 1.7 2007/10/07 16:41:05 deraadt Exp $ */ 2 3 /* 4 * Copyright (c) 1992, 1993, 1994, 1995, 1996 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 * @(#) $Id: fddi.h,v 1.7 2007/10/07 16:41:05 deraadt Exp $ (LBL) 24 */ 25 26 /* 27 * Based on Ultrix if_fddi.h 28 */ 29 30 /* 31 * This stuff should come from a system header file, but there's no 32 * obviously portable way to do that and it's not really going 33 * to change from system to system (except for the padding business). 34 */ 35 36 struct fddi_header { 37 u_char fddi_fc; /* frame control */ 38 u_char fddi_dhost[6]; 39 u_char fddi_shost[6]; 40 }; 41 42 43 /* Useful values for fddi_fc (frame control) field */ 44 45 /* 46 * FDDI Frame Control bits 47 */ 48 #define FDDIFC_C 0x80 /* Class bit */ 49 #define FDDIFC_L 0x40 /* Address length bit */ 50 #define FDDIFC_F 0x30 /* Frame format bits */ 51 #define FDDIFC_Z 0x0f /* Control bits */ 52 53 /* 54 * FDDI Frame Control values. (48-bit addressing only). 55 */ 56 #define FDDIFC_VOID 0x40 /* Void frame */ 57 #define FDDIFC_NRT 0x80 /* Nonrestricted token */ 58 #define FDDIFC_RT 0xc0 /* Restricted token */ 59 #define FDDIFC_SMT_INFO 0x41 /* SMT Info */ 60 #define FDDIFC_SMT_NSA 0x4F /* SMT Next station adrs */ 61 #define FDDIFC_MAC_BEACON 0xc2 /* MAC Beacon frame */ 62 #define FDDIFC_MAC_CLAIM 0xc3 /* MAC Claim frame */ 63 #define FDDIFC_LLC_ASYNC 0x50 /* Async. LLC frame */ 64 #define FDDIFC_LLC_SYNC 0xd0 /* Sync. LLC frame */ 65 #define FDDIFC_IMP_ASYNC 0x60 /* Implementor Async. */ 66 #define FDDIFC_IMP_SYNC 0xe0 /* Implementor Synch. */ 67 #define FDDIFC_SMT 0x40 /* SMT frame */ 68 #define FDDIFC_MAC 0xc0 /* MAC frame */ 69 70 #define FDDIFC_CLFF 0xF0 /* Class/Length/Format bits */ 71 #define FDDIFC_ZZZZ 0x0F /* Control bits */ 72