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Annotation of 43BSDReno/sys/vaxif/if_en.h, revision 1.1.1.1

1.1       root        1: /*
                      2:  * Copyright (c) 1982, 1986 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_en.h     7.3 (Berkeley) 6/28/90
                     21:  */
                     22: 
                     23: /*
                     24:  * Structure of a Ethernet header.
                     25:  */
                     26: struct en_header {
                     27:        u_char  en_shost;
                     28:        u_char  en_dhost;
                     29:        u_short en_type;
                     30: };
                     31: 
                     32: #define        ENTYPE_PUP      0x0200          /* PUP protocol */
                     33: #define        ENTYPE_IP       0x0201          /* IP protocol */
                     34: 
                     35: /*
                     36:  * The ENTYPE_NTRAILER packet types starting at
                     37:  * ENTYPE_TRAIL have (type-ENTYPE_TRAIL)*512 bytes
                     38:  * of data followed by an Ethernet type (as given above)
                     39:  * and then the (variable-length) header.
                     40:  */
                     41: #define        ENTYPE_TRAIL    0x1000          /* Trailer type */
                     42: #define        ENTYPE_NTRAILER 16
                     43: 
                     44: #define EN_BROADCAST   0               /* Hardware broadcast address */

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