FreeBSD/Linux Kernel Cross Reference
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
     * $FreeBSD: src/sys/net/if_llc.h,v 1.7 1999/08/28 00:48:18 peter Exp $
     * $DragonFly: src/sys/net/if_llc.h,v 1.5 2006/05/20 02:42:08 dillon Exp $
     */
    
    #ifndef _NET_IF_LLC_H_
    #define _NET_IF_LLC_H_
    
    #ifndef _SYS_TYPES_H_
    #include <sys/types.h>
    #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_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
   #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
   
   #endif

Cache object: 83f301cbcd3b19f111461f841d6737f5