[unix-history] / usr / src / sys / net / if_llc.h

/*
 * 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
 */

/*
 * 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;
		struct frmrinfo {
			u_char rej_pdu_0;
			u_char rej_pdu_1;
			u_char frmr_control;
			u_char frmr_control_ext;
			u_char frmr_cause;
		} frmrinfo;
	    } type_frmr;
	    struct {
		u_char control;
		u_char org_code[3];
		u_short ether_type;
	    } type_snap;
	    struct {
		u_char control;
		u_char control_ext;
	    } type_raw;
	} llc_un;
};
#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.frmrinfo
#define llc_frmr_pdu0          llc_un.type_frmr.frmrinfo.rej_pdu0
#define llc_frmr_pdu1          llc_un.type_frmr.frmrinfo.rej_pdu1
#define llc_frmr_control       llc_un.type_frmr.frmrinfo.frmr_control
#define llc_frmr_control_ext   llc_un.type_frmr.frmrinfo.frmr_control_ext
#define llc_frmr_cause         llc_un.type_frmr.frmrinfo.frmr_control_ext

/*
 * 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
Commit	Line	Data
394326e6	1	/*
ad787160 C	2	* Copyright (c) 1988, 1993
ad787160 C	3	* The Regents of the University of California. All rights reserved.
394326e6	4	*
ad787160 C	5	* Redistribution and use in source and binary forms, with or without
	6	* modification, are permitted provided that the following conditions
	7	* are met:
	8	* 1. Redistributions of source code must retain the above copyright
	9	* notice, this list of conditions and the following disclaimer.
	10	* 2. Redistributions in binary form must reproduce the above copyright
	11	* notice, this list of conditions and the following disclaimer in the
	12	* documentation and/or other materials provided with the distribution.
	13	* 3. All advertising materials mentioning features or use of this software
	14	* must display the following acknowledgement:
	15	* This product includes software developed by the University of
	16	* California, Berkeley and its contributors.
	17	* 4. Neither the name of the University nor the names of its contributors
	18	* may be used to endorse or promote products derived from this software
	19	* without specific prior written permission.
394326e6	20	*
ad787160 C	21	* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
	22	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	23	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	24	* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
	25	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	26	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	27	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	28	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	29	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	30	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	31	* SUCH DAMAGE.
	32	*
	33	* @(#)if_llc.h 8.1 (Berkeley) 6/10/93
394326e6 MK	34	*/
	35
	36	/*
	37	* IEEE 802.2 Link Level Control headers, for use in conjunction with
	38	* 802.{3,4,5} media access control methods.
	39	*
	40	* Headers here do not use bit fields due to shortcommings in many
	41	* compilers.
	42	*/
	43
	44	struct llc {
	45	u_char llc_dsap;
	46	u_char llc_ssap;
	47	union {
	48	struct {
	49	u_char control;
	50	u_char format_id;
	51	u_char class;
	52	u_char window_x2;
	53	} type_u;
	54	struct {
	55	u_char num_snd_x2;
	56	u_char num_rcv_x2;
	57	} type_i;
	58	struct {
	59	u_char control;
	60	u_char num_rcv_x2;
	61	} type_s;
06df2928 KS	62	struct {
	63	u_char control;
	64	struct frmrinfo {
	65	u_char rej_pdu_0;
	66	u_char rej_pdu_1;
	67	u_char frmr_control;
	68	u_char frmr_control_ext;
	69	u_char frmr_cause;
	70	} frmrinfo;
	71	} type_frmr;
394326e6 MK	72	struct {
	73	u_char control;
	74	u_char org_code[3];
	75	u_short ether_type;
	76	} type_snap;
06df2928 KS	77	struct {
	78	u_char control;
	79	u_char control_ext;
	80	} type_raw;
394326e6 MK	81	} llc_un;
394326e6 MK	82	};
06df2928 KS	83	#define llc_control llc_un.type_u.control
	84	#define llc_control_ext llc_un.type_raw.control_ext
	85	#define llc_fid llc_un.type_u.format_id
	86	#define llc_class llc_un.type_u.class
	87	#define llc_window llc_un.type_u.window_x2
	88	#define llc_frmrinfo llc_un.type_frmr.frmrinfo
	89	#define llc_frmr_pdu0 llc_un.type_frmr.frmrinfo.rej_pdu0
	90	#define llc_frmr_pdu1 llc_un.type_frmr.frmrinfo.rej_pdu1
	91	#define llc_frmr_control llc_un.type_frmr.frmrinfo.frmr_control
	92	#define llc_frmr_control_ext llc_un.type_frmr.frmrinfo.frmr_control_ext
	93	#define llc_frmr_cause llc_un.type_frmr.frmrinfo.frmr_control_ext
394326e6	94
06df2928 KS	95	/*
	96	* Don't use sizeof(struct llc_un) for LLC header sizes
	97	*/
	98	#define LLC_ISFRAMELEN 4
	99	#define LLC_UFRAMELEN 3
	100	#define LLC_FRMRLEN 7
	101
	102	/*
	103	* Unnumbered LLC format commands
	104	*/
394326e6 MK	105	#define LLC_UI 0x3
394326e6 MK	106	#define LLC_UI_P 0x13
06df2928 KS	107	#define LLC_DISC 0x43
	108	#define LLC_DISC_P 0x53
	109	#define LLC_UA 0x63
	110	#define LLC_UA_P 0x73
394326e6 MK	111	#define LLC_TEST 0xe3
394326e6 MK	112	#define LLC_TEST_P 0xf3
06df2928 KS	113	#define LLC_FRMR 0x87
	114	#define LLC_FRMR_P 0x97
	115	#define LLC_DM 0x0f
	116	#define LLC_DM_P 0x1f
	117	#define LLC_XID 0xaf
	118	#define LLC_XID_P 0xbf
	119	#define LLC_SABME 0x6f
	120	#define LLC_SABME_P 0x7f
394326e6	121
06df2928 KS	122	/*
	123	* Supervisory LLC commands
	124	*/
	125	#define LLC_RR 0x01
	126	#define LLC_RNR 0x05
	127	#define LLC_REJ 0x09
	128
	129	/*
	130	* Info format - dummy only
	131	*/
	132	#define LLC_INFO 0x00
	133
	134	/*
	135	* ISO PDTR 10178 contains among others
	136	*/
	137	#define LLC_X25_LSAP 0x7e
394326e6	138	#define LLC_SNAP_LSAP 0xaa
06df2928 KS	139	#define LLC_ISO_LSAP 0xfe
	140
	141
	142
	143
	144
	145