NetBSD/sys/net/if_llc.h

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1993-03-21 12:45:37 +03:00
/*
* Copyright (c) 1988 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 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.
*
* from: @(#)if_llc.h 7.2 (Berkeley) 6/28/90
* $Id: if_llc.h,v 1.3 1993/05/20 03:06:00 cgd Exp $
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*/
#ifndef _NET_IF_LLC_H_
#define _NET_IF_LLC_H_
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/*
* IEEE 802.2 Link Level Control headers, for use in conjunction with
* 802.{3,4,5} media access control methods.
*
* Headers here do not use bit fields due to shortcommings in many
* compilers.
*/
struct llc {
u_char llc_dsap;
u_char llc_ssap;
union {
struct {
u_char control;
u_char format_id;
u_char class;
u_char window_x2;
} type_u;
struct {
u_char num_snd_x2;
u_char num_rcv_x2;
} type_i;
struct {
u_char control;
u_char num_rcv_x2;
} type_s;
struct {
u_char control;
u_char org_code[3];
u_short ether_type;
} type_snap;
} llc_un;
};
#define llc_control llc_un.type_u.control
#define llc_fid llc_un.type_u.format_id
#define llc_class llc_un.type_u.class
#define llc_window llc_un.type_u.window_x2
#define LLC_UI 0x3
#define LLC_UI_P 0x13
#define LLC_XID 0xaf
#define LLC_XID_P 0xbf
#define LLC_TEST 0xe3
#define LLC_TEST_P 0xf3
#define LLC_ISO_LSAP 0xfe
#define LLC_SNAP_LSAP 0xaa
#endif /* !_NET_IF_LLC_H_ */