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Annotation of 43BSDReno/sys/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 is only permitted until one year after the first shipment
                      6:  * of 4.4BSD by the Regents.  Otherwise, redistribution and use in source and
                      7:  * binary forms are permitted provided that: (1) source distributions retain
                      8:  * this entire copyright notice and comment, and (2) distributions including
                      9:  * binaries display the following acknowledgement:  This product includes
                     10:  * software developed by the University of California, Berkeley and its
                     11:  * contributors'' in the documentation or other materials provided with the
                     12:  * distribution and in all advertising materials mentioning features or use
                     13:  * of this software.  Neither the name of the University nor the names of
                     14:  * its contributors may be used to endorse or promote products derived from
                     15:  * this software without specific prior written permission.
                     16:  * THIS SOFTWARE IS PROVIDED AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
                     17:  * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
                     18:  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
                     19:  *
                     20:  *      @(#)if_llc.h   7.2 (Berkeley) 6/28/90
                     21:  */
                     22: 
                     23: /*
                     24:  * IEEE 802.2 Link Level Control headers, for use in conjunction with
                     25:  * 802.{3,4,5} media access control methods.
                     26:  *
                     27:  * Headers here do not use bit fields due to shortcommings in many
                     28:  * compilers.
                     29:  */
                     30: 
                     31: struct llc {
                     32:        u_char  llc_dsap;
                     33:        u_char  llc_ssap;
                     34:        union {
                     35:            struct {
                     36:                u_char control;
                     37:                u_char format_id;
                     38:                u_char class;
                     39:                u_char window_x2;
                     40:            } type_u;
                     41:            struct {
                     42:                u_char num_snd_x2;
                     43:                u_char num_rcv_x2;
                     44:            } type_i;
                     45:            struct {
                     46:                u_char control;
                     47:                u_char num_rcv_x2;
                     48:            } type_s;
                     49:            struct {
                     50:                u_char control;
                     51:                u_char org_code[3];
                     52:                u_short ether_type;
                     53:            } type_snap;
                     54:        } llc_un;
                     55: };
                     56: #define llc_control llc_un.type_u.control
                     57: #define llc_fid llc_un.type_u.format_id
                     58: #define llc_class llc_un.type_u.class
                     59: #define llc_window llc_un.type_u.window_x2
                     60: 
                     61: #define LLC_UI         0x3
                     62: #define LLC_UI_P       0x13
                     63: #define LLC_XID                0xaf
                     64: #define LLC_XID_P      0xbf
                     65: #define LLC_TEST       0xe3
                     66: #define LLC_TEST_P     0xf3
                     67: 
                     68: #define LLC_ISO_LSAP   0xfe
                     69: #define LLC_SNAP_LSAP  0xaa

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