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Annotation of Net2/net/if_llc.h, revision 1.1.1.1

1.1       root        1: /*
                      2:  * Copyright (c) 1988 Regents of the University of California.
                      3:  * All rights reserved.
                      4:  *
                      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.
                     20:  *
                     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   7.2 (Berkeley) 6/28/90
                     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;
                     62:            struct {
                     63:                u_char control;
                     64:                u_char org_code[3];
                     65:                u_short ether_type;
                     66:            } type_snap;
                     67:        } llc_un;
                     68: };
                     69: #define llc_control llc_un.type_u.control
                     70: #define llc_fid llc_un.type_u.format_id
                     71: #define llc_class llc_un.type_u.class
                     72: #define llc_window llc_un.type_u.window_x2
                     73: 
                     74: #define LLC_UI         0x3
                     75: #define LLC_UI_P       0x13
                     76: #define LLC_XID                0xaf
                     77: #define LLC_XID_P      0xbf
                     78: #define LLC_TEST       0xe3
                     79: #define LLC_TEST_P     0xf3
                     80: 
                     81: #define LLC_ISO_LSAP   0xfe
                     82: #define LLC_SNAP_LSAP  0xaa

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