[apple/xnu.git] / bsd / net / if_llc.h

/*
 * Copyright (c) 2000,2009 Apple Inc. All rights reserved.
 *
 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
 * 
 * This file contains Original Code and/or Modifications of Original Code
 * as defined in and that are subject to the Apple Public Source License
 * Version 2.0 (the 'License'). You may not use this file except in
 * compliance with the License. The rights granted to you under the License
 * may not be used to create, or enable the creation or redistribution of,
 * unlawful or unlicensed copies of an Apple operating system, or to
 * circumvent, violate, or enable the circumvention or violation of, any
 * terms of an Apple operating system software license agreement.
 * 
 * Please obtain a copy of the License at
 * http://www.opensource.apple.com/apsl/ and read it before using this file.
 * 
 * The Original Code and all software distributed under the License are
 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
 * Please see the License for the specific language governing rights and
 * limitations under the License.
 * 
 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
 */
/*
 * 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. 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_
#include <sys/appleapiopts.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 shortcomings 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_id;
		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 __attribute__((__packed__));
	    struct {
		u_int8_t control;
		u_int8_t control_ext;
	    } type_raw;
	} llc_un;
} __attribute__((__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;
} __attribute__((__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

/*
 * 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

/*
 * LLC XID definitions from 802.2, as needed
 */

#define LLC_XID_FORMAT_BASIC	0x81
#define LLC_XID_BASIC_MINLEN	(LLC_UFRAMELEN + 3)

#define LLC_XID_CLASS_I 	0x1
#define LLC_XID_CLASS_II	0x3
#define LLC_XID_CLASS_III	0x5
#define LLC_XID_CLASS_IV	0x7


#endif /* !_NET_IF_LLC_H_ */
Commit	Line	Data
1c79356b	1	/*
b7266188	2	* Copyright (c) 2000,2009 Apple Inc. All rights reserved.
5d5c5d0d	3	*
2d21ac55	4	* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
1c79356b	5	*
2d21ac55 A	6	* This file contains Original Code and/or Modifications of Original Code
	7	* as defined in and that are subject to the Apple Public Source License
	8	* Version 2.0 (the 'License'). You may not use this file except in
	9	* compliance with the License. The rights granted to you under the License
	10	* may not be used to create, or enable the creation or redistribution of,
	11	* unlawful or unlicensed copies of an Apple operating system, or to
	12	* circumvent, violate, or enable the circumvention or violation of, any
	13	* terms of an Apple operating system software license agreement.
8f6c56a5	14	*
2d21ac55 A	15	* Please obtain a copy of the License at
	16	* http://www.opensource.apple.com/apsl/ and read it before using this file.
	17	*
	18	* The Original Code and all software distributed under the License are
	19	* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
8f6c56a5 A	20	* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
8f6c56a5 A	21	* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
2d21ac55 A	22	* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
	23	* Please see the License for the specific language governing rights and
	24	* limitations under the License.
8f6c56a5	25	*
2d21ac55	26	* @APPLE_OSREFERENCE_LICENSE_HEADER_END@
1c79356b A	27	*/
	28	/*
	29	* Copyright (c) 1988, 1993
	30	* The Regents of the University of California. All rights reserved.
	31	*
	32	* Redistribution and use in source and binary forms, with or without
	33	* modification, are permitted provided that the following conditions
	34	* are met:
	35	* 1. Redistributions of source code must retain the above copyright
	36	* notice, this list of conditions and the following disclaimer.
	37	* 2. Redistributions in binary form must reproduce the above copyright
	38	* notice, this list of conditions and the following disclaimer in the
	39	* documentation and/or other materials provided with the distribution.
b7266188	40	* 3. Neither the name of the University nor the names of its contributors
1c79356b A	41	* may be used to endorse or promote products derived from this software
	42	* without specific prior written permission.
	43	*
	44	* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
	45	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	46	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	47	* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
	48	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	49	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	50	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	51	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	52	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	53	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	54	* SUCH DAMAGE.
	55	*
b7266188	56	* @(#)if_llc.h 8.1 (Berkeley) 6/10/93
1c79356b A	57	*/
	58
	59	#ifndef _NET_IF_LLC_H_
	60	#define _NET_IF_LLC_H_
9bccf70c	61	#include <sys/appleapiopts.h>
1c79356b A	62
	63	/*
	64	* IEEE 802.2 Link Level Control headers, for use in conjunction with
	65	* 802.{3,4,5} media access control methods.
	66	*
	67	* Headers here do not use bit fields due to shortcomings in many
	68	* compilers.
	69	*/
	70
	71	struct llc {
b7266188 A	72	u_int8_t llc_dsap;
b7266188 A	73	u_int8_t llc_ssap;
1c79356b A	74	union {
1c79356b A	75	struct {
b7266188 A	76	u_int8_t control;
	77	u_int8_t format_id;
	78	u_int8_t class_id;
	79	u_int8_t window_x2;
1c79356b A	80	} type_u;
1c79356b A	81	struct {
b7266188 A	82	u_int8_t num_snd_x2;
b7266188 A	83	u_int8_t num_rcv_x2;
1c79356b A	84	} type_i;
1c79356b A	85	struct {
b7266188 A	86	u_int8_t control;
b7266188 A	87	u_int8_t num_rcv_x2;
1c79356b A	88	} type_s;
1c79356b A	89	struct {
b7266188 A	90	u_int8_t control;
	91	/*
	92	* We cannot put the following fields in a structure because
	93	* the structure rounding might cause padding.
	94	*/
	95	u_int8_t frmr_rej_pdu0;
	96	u_int8_t frmr_rej_pdu1;
	97	u_int8_t frmr_control;
	98	u_int8_t frmr_control_ext;
	99	u_int8_t frmr_cause;
1c79356b A	100	} type_frmr;
1c79356b A	101	struct {
b7266188 A	102	u_int8_t control;
	103	u_int8_t org_code[3];
	104	u_int16_t ether_type;
	105	} type_snap __attribute__((__packed__));
1c79356b	106	struct {
b7266188 A	107	u_int8_t control;
b7266188 A	108	u_int8_t control_ext;
1c79356b A	109	} type_raw;
1c79356b A	110	} llc_un;
b7266188 A	111	} __attribute__((__packed__));
	112
	113	struct frmrinfo {
	114	u_int8_t frmr_rej_pdu0;
	115	u_int8_t frmr_rej_pdu1;
	116	u_int8_t frmr_control;
	117	u_int8_t frmr_control_ext;
	118	u_int8_t frmr_cause;
	119	} __attribute__((__packed__));
	120
	121	#define llc_control llc_un.type_u.control
	122	#define llc_control_ext llc_un.type_raw.control_ext
	123	#define llc_fid llc_un.type_u.format_id
	124	#define llc_class llc_un.type_u.class
	125	#define llc_window llc_un.type_u.window_x2
	126	#define llc_frmrinfo llc_un.type_frmr.frmr_rej_pdu0
	127	#define llc_frmr_pdu0 llc_un.type_frmr.frmr_rej_pdu0
	128	#define llc_frmr_pdu1 llc_un.type_frmr.frmr_rej_pdu1
	129	#define llc_frmr_control llc_un.type_frmr.frmr_control
	130	#define llc_frmr_control_ext llc_un.type_frmr.frmr_control_ext
	131	#define llc_frmr_cause llc_un.type_frmr.frmr_cause
	132	#define llc_snap llc_un.type_snap
1c79356b A	133
	134	/*
	135	* Don't use sizeof(struct llc_un) for LLC header sizes
	136	*/
	137	#define LLC_ISFRAMELEN 4
	138	#define LLC_UFRAMELEN 3
	139	#define LLC_FRMRLEN 7
b7266188	140	#define LLC_SNAPFRAMELEN 8
1c79356b A	141
	142	/*
	143	* Unnumbered LLC format commands
	144	*/
	145	#define LLC_UI 0x3
	146	#define LLC_UI_P 0x13
	147	#define LLC_DISC 0x43
	148	#define LLC_DISC_P 0x53
	149	#define LLC_UA 0x63
	150	#define LLC_UA_P 0x73
	151	#define LLC_TEST 0xe3
	152	#define LLC_TEST_P 0xf3
	153	#define LLC_FRMR 0x87
	154	#define LLC_FRMR_P 0x97
	155	#define LLC_DM 0x0f
	156	#define LLC_DM_P 0x1f
	157	#define LLC_XID 0xaf
	158	#define LLC_XID_P 0xbf
	159	#define LLC_SABME 0x6f
	160	#define LLC_SABME_P 0x7f
	161
	162	/*
	163	* Supervisory LLC commands
	164	*/
	165	#define LLC_RR 0x01
	166	#define LLC_RNR 0x05
	167	#define LLC_REJ 0x09
	168
	169	/*
	170	* Info format - dummy only
	171	*/
	172	#define LLC_INFO 0x00
	173
	174	/*
	175	* ISO PDTR 10178 contains among others
	176	*/
b7266188	177	#define LLC_8021D_LSAP 0x42
1c79356b A	178	#define LLC_X25_LSAP 0x7e
	179	#define LLC_SNAP_LSAP 0xaa
	180	#define LLC_ISO_LSAP 0xfe
	181
b7266188 A	182	/*
	183	* LLC XID definitions from 802.2, as needed
	184	*/
	185
	186	#define LLC_XID_FORMAT_BASIC 0x81
	187	#define LLC_XID_BASIC_MINLEN (LLC_UFRAMELEN + 3)
	188
	189	#define LLC_XID_CLASS_I 0x1
	190	#define LLC_XID_CLASS_II 0x3
	191	#define LLC_XID_CLASS_III 0x5
	192	#define LLC_XID_CLASS_IV 0x7
	193
	194
	195	#endif /* !_NET_IF_LLC_H_ */