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/*
* Copyright (c) 1993, 1994, 1997
* 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.
*
* @(#) $Header: /cvs/OpenBSD/src/usr.sbin/tcpdump/llc.h,v 1.6 1999/07/28 20:41:35 jakob Exp $ (LBL)
*/
/*
* 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.
*/
/*
* A somewhat abstracted view of the LLC header
*/
struct llc {
u_char dsap;
u_char ssap;
union {
u_char u_ctl;
u_short is_ctl;
struct {
u_char snap_ui;
u_char snap_pi[5];
} snap;
struct {
u_char snap_ui;
u_char snap_orgcode[3];
u_char snap_ethertype[2];
} snap_ether;
} ctl;
};
#define llcui ctl.snap.snap_ui
#define llcpi ctl.snap.snap_pi
#define orgcode ctl.snap_ether.snap_orgcode
#define ethertype ctl.snap_ether.snap_ethertype
#define llcis ctl.is_ctl
#define llcu ctl.u_ctl
#define LLC_U_FMT 3
#define LLC_GSAP 1
#define LLC_S_FMT 1
#define LLC_U_POLL 0x10
#define LLC_IS_POLL 0x0001
#define LLC_XID_FI 0x81
#define LLC_U_CMD(u) ((u) & 0xef)
#define LLC_UI 0x03
#define LLC_UA 0x63
#define LLC_DISC 0x43
#define LLC_DM 0x0f
#define LLC_SABME 0x6f
#define LLC_TEST 0xe3
#define LLC_XID 0xaf
#define LLC_FRMR 0x87
#define LLC_S_CMD(is) (((is) >> 10) & 0x03)
#define LLC_RR 0x0100
#define LLC_RNR 0x0500
#define LLC_REJ 0x0900
#define LLC_IS_NR(is) (((is) >> 1) & 0x7f)
#define LLC_I_NS(is) (((is) >> 9) & 0x7f)
#ifndef LLCSAP_NULL
#define LLCSAP_NULL 0x00
#endif
#ifndef LLCSAP_GLOBAL
#define LLCSAP_GLOBAL 0xff
#endif
#ifndef LLCSAP_8021B
#define LLCSAP_8021B_I 0x02
#endif
#ifndef LLCSAP_8021B
#define LLCSAP_8021B_G 0x03
#endif
#ifndef LLCSAP_IP
#define LLCSAP_IP 0x06
#endif
#ifndef LLCSAP_PROWAYNM
#define LLCSAP_PROWAYNM 0x0e
#endif
#ifndef LLCSAP_8021D
#define LLCSAP_8021D 0x42
#endif
#ifndef LLCSAP_RS511
#define LLCSAP_RS511 0x4e
#endif
#ifndef LLCSAP_ISO8208
#define LLCSAP_ISO8208 0x7e
#endif
#ifndef LLCSAP_PROWAY
#define LLCSAP_PROWAY 0x8e
#endif
#ifndef LLCSAP_SNAP
#define LLCSAP_SNAP 0xaa
#endif
#ifndef LLCSAP_ISONS
#define LLCSAP_ISONS 0xfe
#endif
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