DRBLK | Back to Index page

| Prolog Control Block Contents DRBLK DSECT Storage Layout Cross Reference (Contains links to field and bit definitions) |
Programming Interface Information: This information is NOT intended to be used as Programming Interfaces of z/VM.

DRBLK Control Block Content | Top of page

     DRBLK DSECT
    Top of page

    Hex   Dec Type/Val   Lng Label (dup)    Comments
    ---- ---- --------- ---- -------------- --------
    0000    0 Structure      DRBLK          NETWORK DIAGNOSE x'2A8' Request Blocks
    0000    0 Bitstring    1 DRBFLAG        Processing Flag
              .... ...1      DRBMCAST       X'01' DRBMCAST Indicates a
                                            Multicast Frame
              .... ..1.      DRBBCAST       X'02' DRBBCAST Indicates a
                                            Broadcast Frame
              .... .1..      DRBUCAST       X'04' DRBUCAST Indicates a
                                            Unicast Frame
              .... .111      DRBVFLAG       DRBMCAST+DRBBCAST+DRBUCAST
                                            DRBVFLAG
    0001    1 Bitstring    1 DRBKEY         Storage key for Datagram
    0002    2 Bitstring    4 *              Reserved for future IBM Use
    0006    6 Signed       2 DRBCOUNT       Size of Datagram in bytes
    0008    8 Dbl-Word     8 DRBADDR        G:ADR of Datagram (payload)
    0010   16 Bitstring    1 DRB$END (0)    The end
          DG4BK Operation Code x'04' Multicast MAC ADR Registration

DRBLK Storage Layout | Top of page

    *** DRBLK - NETWORK DIAGNOSE x'2A8' Request Blocks
    *
    *     +------+------+---------------------------+-------------+
    *   0 |:FLAG |DRBKEY|///////////////////////////|  DRBCOUNT   |
    *     +------+------+---------------------------+-------------+
    *   8 |                       DRBADDR                         |
    *     +-------------------------------------------------------+
    *
    *** DRBLK - NETWORK DIAGNOSE x'2A8' Request Blocks

DRBLK Cross Reference | Top of page

    Symbol         Dspl Value
    -------------- ---- -----
    DRB$END        0010
    DRBADDR        0008
    DRBBCAST       0000 02
    DRBCOUNT       0006
    DRBFLAG        0000
    DRBKEY         0001
    DRBMCAST       0000 01
    DRBUCAST       0000 04
    DRBVFLAG       0000 07

This information is based on z/VM 7.2.0 Last updated on 24 Jun 2020 at 09:27:42 EDT.
Copyright IBM Corporation, 1990, 2020