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Annotation of Net2/net/if_llc.h, revision 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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