xref: /src/sys/net/dlt.h

/*	$NetBSD: dlt.h,v 1.2 2001/04/29 09:50:37 martin Exp $	*/

/*
 * Copyright (c) 1990, 1991, 1993
 *	The Regents of the University of California.  All rights reserved.
 *
 * This code is derived from the Stanford/CMU enet packet filter,
 * (net/enet.c) distributed as part of 4.3BSD, and code contributed
 * to Berkeley by Steven McCanne and Van Jacobson both of Lawrence
 * Berkeley Laboratory.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *	This product includes software developed by the University of
 *	California, Berkeley and its contributors.
 * 4. 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 BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 *	@(#)bpf.h	8.2 (Berkeley) 1/9/95
 * @(#) Header: bpf.h,v 1.36 97/06/12 14:29:53 leres Exp  (LBL)
 */

#ifndef _NET_DLT_H_
#define _NET_DLT_H_

/*
 * Data-link level type codes.
 */
#define DLT_NULL	0	/* no link-layer encapsulation */
#define DLT_EN10MB	1	/* Ethernet (10Mb) */
#define DLT_EN3MB	2	/* Experimental Ethernet (3Mb) */
#define DLT_AX25	3	/* Amateur Radio AX.25 */
#define DLT_PRONET	4	/* Proteon ProNET Token Ring */
#define DLT_CHAOS	5	/* Chaos */
#define DLT_IEEE802	6	/* IEEE 802 Networks */
#define DLT_ARCNET	7	/* ARCNET */
#define DLT_SLIP	8	/* Serial Line IP */
#define DLT_PPP		9	/* Point-to-point Protocol */
#define DLT_FDDI	10	/* FDDI */
#define DLT_ATM_RFC1483	11	/* LLC/SNAP encapsulated atm */
#define DLT_RAW		12	/* raw IP */
#define DLT_SLIP_BSDOS	13	/* BSD/OS Serial Line IP */
#define DLT_PPP_BSDOS	14	/* BSD/OS Point-to-point Protocol */
#define DLT_HIPPI	15	/* HIPPI */
#define DLT_HDLC	16	/* HDLC framing */

/* NetBSD-specific types */
#define	DLT_PPP_SERIAL	50	/* PPP over serial (async and sync) */
#define	DLT_PPP_ETHER	51	/* XXX - depreceated! PPP over Ethernet; session only, w/o ether header */

/*
 * NetBSD-specific generic "raw" link type.  The upper 16-bits indicate
 * that this is the generic raw type, and the lower 16-bits are the
 * address family we're dealing with.
 */
#define	DLT_RAWAF_MASK		0x02240000
#define	DLT_RAWAF(af)		(DLT_RAWAF_MASK | (af))
#define	DLT_RAWAF_AF(x)		((x) & 0x0000ffff)
#define	DLT_IS_RAWAF(x)		(((x) & 0xffff0000) == DLT_RAWAF_MASK)

#endif /* _NET_DLT_H_ */