/*
 * Copyright (c) 1988 Regents of the University of California.
 * All rights reserved.
 *
 * %sccs.include.redist.c%
 *
 *      @(#)if_llc.h	7.2 (Berkeley) 06/28/90
 */

/*
 * 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