--- /dev/null
+/*!\file net/if_llc.h
+ * IEEE 802.2 Link Level Control.
+ */
+
+/* $NetBSD: if_llc.h,v 1.9 1997/05/02 21:08:54 christos Exp $ */
+
+/*
+ * Copyright (c) 1988, 1993
+ * 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 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.
+ *
+ * @(#)if_llc.h 8.1 (Berkeley) 6/10/93
+ */
+#ifndef __NET_IF_LLC_H
+#define __NET_IF_LLC_H
+
+/*
+ * 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.
+ */
+
+#include <sys/packon.h>
+
+struct llc {
+ u_int8_t llc_dsap;
+ u_int8_t llc_ssap;
+ union {
+ struct {
+ u_int8_t control;
+ u_int8_t format_id;
+ u_int8_t class;
+ u_int8_t window_x2;
+ } type_u;
+ struct {
+ u_int8_t num_snd_x2;
+ u_int8_t num_rcv_x2;
+ } type_i;
+ struct {
+ u_int8_t control;
+ u_int8_t num_rcv_x2;
+ } type_s;
+ struct {
+ u_int8_t control;
+ /*
+ * We cannot put the following fields in a structure because
+ * the structure rounding might cause padding.
+ */
+ u_int8_t frmr_rej_pdu0;
+ u_int8_t frmr_rej_pdu1;
+ u_int8_t frmr_control;
+ u_int8_t frmr_control_ext;
+ u_int8_t frmr_cause;
+ } type_frmr;
+ struct {
+ u_int8_t control;
+ u_int8_t org_code[3];
+ u_int16_t ether_type;
+ } type_snap;
+ struct {
+ u_int8_t control;
+ u_int8_t control_ext;
+ } type_raw;
+ } llc_un;
+};
+
+struct frmrinfo {
+ u_int8_t frmr_rej_pdu0;
+ u_int8_t frmr_rej_pdu1;
+ u_int8_t frmr_control;
+ u_int8_t frmr_control_ext;
+ u_int8_t frmr_cause;
+};
+
+#include <sys/packoff.h>
+
+#define llc_control llc_un.type_u.control
+#define llc_control_ext llc_un.type_raw.control_ext
+#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_frmrinfo llc_un.type_frmr.frmr_rej_pdu0
+#define llc_frmr_pdu0 llc_un.type_frmr.frmr_rej_pdu0
+#define llc_frmr_pdu1 llc_un.type_frmr.frmr_rej_pdu1
+#define llc_frmr_control llc_un.type_frmr.frmr_control
+#define llc_frmr_control_ext llc_un.type_frmr.frmr_control_ext
+#define llc_frmr_cause llc_un.type_frmr.frmr_cause
+
+/*
+ * Don't use sizeof(struct llc_un) for LLC header sizes
+ */
+#define LLC_ISFRAMELEN 4
+#define LLC_UFRAMELEN 3
+#define LLC_FRMRLEN 7
+
+/*
+ * Unnumbered LLC format commands
+ */
+#define LLC_UI 0x3
+#define LLC_UI_P 0x13
+#define LLC_DISC 0x43
+#define LLC_DISC_P 0x53
+#define LLC_UA 0x63
+#define LLC_UA_P 0x73
+#define LLC_TEST 0xe3
+#define LLC_TEST_P 0xf3
+#define LLC_FRMR 0x87
+#define LLC_FRMR_P 0x97
+#define LLC_DM 0x0f
+#define LLC_DM_P 0x1f
+#define LLC_XID 0xaf
+#define LLC_XID_P 0xbf
+#define LLC_SABME 0x6f
+#define LLC_SABME_P 0x7f
+
+/*
+ * Supervisory LLC commands
+ */
+#define LLC_RR 0x01
+#define LLC_RNR 0x05
+#define LLC_REJ 0x09
+
+/*
+ * Info format - dummy only
+ */
+#define LLC_INFO 0x00
+
+/*
+ * ISO PDTR 10178 contains among others
+ */
+#define LLC_X25_LSAP 0x7e
+#define LLC_SNAP_LSAP 0xaa
+#define LLC_ISO_LSAP 0xfe
+
+#endif
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