/*      $OpenBSD: fddi.h,v 1.7 2007/10/07 16:41:05 deraadt Exp $        */

/*
 * Copyright (c) 1992, 1993, 1994, 1995, 1996
 *      The Regents of the University of California.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that: (1) source code distributions
 * retain the above copyright notice and this paragraph in its entirety, (2)
 * distributions including binary code include the above copyright notice and
 * this paragraph in its entirety in the documentation or other materials
 * provided with the distribution, and (3) all advertising materials mentioning
 * features or use of this software display the following acknowledgement:
 * ``This product includes software developed by the University of California,
 * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
 * the University nor the names of its contributors may be used to endorse
 * or promote products derived from this software without specific prior
 * written permission.
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
 * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
 *
 * @(#) $Id: fddi.h,v 1.7 2007/10/07 16:41:05 deraadt Exp $ (LBL)
 */

/*
 * Based on Ultrix if_fddi.h
 */

/*
 * This stuff should come from a system header file, but there's no
 * obviously portable way to do that and it's not really going
 * to change from system to system (except for the padding business).
 */

struct fddi_header {
        u_char  fddi_fc;                /* frame control */
        u_char  fddi_dhost[6];
        u_char  fddi_shost[6];
};


/* Useful values for fddi_fc (frame control) field */

/*
 * FDDI Frame Control bits
 */
#define FDDIFC_C                0x80            /* Class bit */
#define FDDIFC_L                0x40            /* Address length bit */
#define FDDIFC_F                0x30            /* Frame format bits */
#define FDDIFC_Z                0x0f            /* Control bits */

/*
 * FDDI Frame Control values. (48-bit addressing only).
 */
#define FDDIFC_VOID             0x40            /* Void frame */
#define FDDIFC_NRT              0x80            /* Nonrestricted token */
#define FDDIFC_RT               0xc0            /* Restricted token */
#define FDDIFC_SMT_INFO         0x41            /* SMT Info */
#define FDDIFC_SMT_NSA          0x4F            /* SMT Next station adrs */
#define FDDIFC_MAC_BEACON       0xc2            /* MAC Beacon frame */
#define FDDIFC_MAC_CLAIM        0xc3            /* MAC Claim frame */
#define FDDIFC_LLC_ASYNC        0x50            /* Async. LLC frame */
#define FDDIFC_LLC_SYNC         0xd0            /* Sync. LLC frame */
#define FDDIFC_IMP_ASYNC        0x60            /* Implementor Async. */
#define FDDIFC_IMP_SYNC         0xe0            /* Implementor Synch. */
#define FDDIFC_SMT              0x40            /* SMT frame */
#define FDDIFC_MAC              0xc0            /* MAC frame */

#define FDDIFC_CLFF             0xF0            /* Class/Length/Format bits */
#define FDDIFC_ZZZZ             0x0F            /* Control bits */