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Annotation of 43BSDReno/sys/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 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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