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Annotation of 42BSD/sys/vaxif/if_en.h, revision 1.1.1.1

1.1       root        1: /*     if_en.h 6.1     83/07/29        */
                      2: 
                      3: /*
                      4:  * Structure of a Ethernet header.
                      5:  */
                      6: struct en_header {
                      7:        u_char  en_shost;
                      8:        u_char  en_dhost;
                      9:        u_short en_type;
                     10: };
                     11: 
                     12: #define        ENTYPE_PUP      0x0200          /* PUP protocol */
                     13: #define        ENTYPE_IP       0x0201          /* IP protocol */
                     14: 
                     15: /*
                     16:  * The ENTYPE_NTRAILER packet types starting at
                     17:  * ENTYPE_TRAIL have (type-ENTYPE_TRAIL)*512 bytes
                     18:  * of data followed by an Ethernet type (as given above)
                     19:  * and then the (variable-length) header.
                     20:  */
                     21: #define        ENTYPE_TRAIL    0x1000          /* Trailer type */
                     22: #define        ENTYPE_NTRAILER 16

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