0,0 → 1,164 |
/*!\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 |