diff options
Diffstat (limited to 'cpukit/libnetworking/net/if_llc.h')
| -rw-r--r-- | cpukit/libnetworking/net/if_llc.h | 166 |
1 files changed, 166 insertions, 0 deletions
diff --git a/cpukit/libnetworking/net/if_llc.h b/cpukit/libnetworking/net/if_llc.h new file mode 100644 index 0000000000..fb38dd51e1 --- /dev/null +++ b/cpukit/libnetworking/net/if_llc.h @@ -0,0 +1,166 @@ +/* + * 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 2006/12/01 17:50:11 imp Exp $ + */ + +/* + * $Id$ + */ + +#ifndef _NET_IF_LLC_H_ +#define _NET_IF_LLC_H_ + +#ifndef __packed +#if defined(__GNUC__) +#define __packed __attribute__((packed)) +#else +#define __packed +#endif +#endif + +/* + * 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; + 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 + +/* + * 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 /* _NET_IF_LLC_H_ */ |