| /* $NetBSD: if_llc.h,v 1.12 1999/11/19 20:41:19 thorpej 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. |
| * 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 |
| * $FreeBSD: src/sys/net/if_llc.h,v 1.13.10.1.2.1 2009/10/25 01:10:29 kensmith Exp $ |
| */ |
| |
| #ifndef _BSD_NET_IF_LLC_H_ |
| #define _BSD_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. |
| */ |
| |
| 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; |
| } __packed type_u; |
| struct { |
| u_int8_t num_snd_x2; |
| u_int8_t num_rcv_x2; |
| } __packed type_i; |
| struct { |
| u_int8_t control; |
| u_int8_t num_rcv_x2; |
| } __packed 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; |
| } __packed type_frmr; |
| struct { |
| u_int8_t control; |
| u_int8_t org_code[3]; |
| u_int16_t ether_type; |
| } __packed type_snap; |
| struct { |
| u_int8_t control; |
| u_int8_t control_ext; |
| } __packed type_raw; |
| } __packed llc_un; |
| } __packed; |
| |
| 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; |
| } __packed; |
| |
| #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 |
| #define llc_snap llc_un.type_snap |
| |
| /* |
| * Don't use sizeof(struct llc_un) for LLC header sizes |
| */ |
| #define LLC_ISFRAMELEN 4 |
| #define LLC_UFRAMELEN 3 |
| #define LLC_FRMRLEN 7 |
| #define LLC_SNAPFRAMELEN 8 |
| |
| #ifdef CTASSERT |
| CTASSERT(sizeof (struct llc) == LLC_SNAPFRAMELEN); |
| #endif |
| |
| /* |
| * 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_8021D_LSAP 0x42 |
| #define LLC_X25_LSAP 0x7e |
| #define LLC_SNAP_LSAP 0xaa |
| #define LLC_ISO_LSAP 0xfe |
| |
| #endif /* _BSD_NET_IF_LLC_H_ */ |
