SWIBK - 64-bit CP - V4R4.0

Programming Interface Information: This information is NOT intended to be used as Programming Interfaces of z/VM.

#### SWIBK

Prolog

Control Block Contents
SWIBK DSECT

Storage Layout

Cross Reference (Contains links to field and bit definitions)

#### SWIBK Prolog

     NAME       : HCPSWIBK
     DESCRIPTION: DSECTS and EQUATES for z/VM Virtual Switch
                  functions.
     DSECT      : SWIBK
     FUNCTION   : z/VM Virtual Switch Eligible Controller Table
     LOCATED BY : SWUECTPT (data area in HCPSWU)
     CREATED BY : HCPSWIAC when a z/VM TCP/IP stack connects to
                  the *VSWITCH CP System Service.
     DELETED BY : An entry may be cleared by HCPSWIDC. The table
                  itself is usually not deleted. However, when
                  a table becomes full, the AddEntry subroutine
                  in HCPSWI can allocate a new, larger table,
                  copy over the existing one, and then delete it.
     REFERENCES : None.
     SERIALIZED : Switch Eligible Controller Table Lock,
                  (SLMSWLCK).
     NOTES      : None.

#### SWIBK Control Block Content

#### SWIBK DSECT

    Hex   Dec Type/Val   Lng Label (dup)    Comments
    ---- ---- --------- ---- -------------- --------
    0000    0 Structure      SWIBK          DSECTS and EQUATES for z/VM
                                            Virtual Switch
    0000    0 Character    8 SWIEUSER       Switch participant user ID
    0008    8 Signed       4 SWIEVMDBK      VMDBK address for controller
    000C   12 Signed       2 SWIEPATH       IUCV Path ID
    000E   14 Address      1 SWIEAVAIL      Ready flag
    000F   15 Bitstring    1 *
    0010   16 Signed       4 SWIECOUNT      Count of active switches
    0014   20 Signed       4 SWIEVDEVS      Start of VDEV range
    0018   24 Signed       4 SWIEVDEVE      End of VDEV range
    001C   28 Signed       4 SWIECAPAB      Controller Capabilities
              00000004       SWIESIZE       (*-SWIBK+7)/8 size in double
                                            words
              00000020       SWIEBSIZ       SWIESIZE*8 size in bytes
              00000008       SWIEINIT       8 Default number of entries

#### SWIBK Storage Layout

    *** SWIBK - DSECTS and EQUATES for z/VM Virtual Switch
    *
    *     +-------------------------------------------------------+
    *   0 |                       SWIEUSER                        |
    *     +---------------------------+-------------+------+------+
    *   8 |        SWIEVMDBK          |  SWIEPATH   |(00E) |//////|
    *     +---------------------------+-------------+------+------+
    *  10 |        SWIECOUNT          |        SWIEVDEVS          |
    *     +---------------------------+---------------------------+
    *  18 |        SWIEVDEVE          |        SWIECAPAB          |
    *     +---------------------------+---------------------------+
    *  20
    *
    *** SWIBK - DSECTS and EQUATES for z/VM Virtual Switch

#### SWIBK Cross Reference

    Symbol         Dspl Value
    -------------- ---- -----
    SWIEAVAIL      000E
    SWIEBSIZ       001C 00000020
    SWIECAPAB      001C
    SWIECOUNT      0010
    SWIEINIT       001C 00000008
    SWIEPATH       000C
    SWIESIZE       001C 00000004
    SWIEUSER       0000
    SWIEVDEVE      0018
    SWIEVDEVS      0014
    SWIEVMDBK      0008

This information is based on z/VM V4R4.0. Last updated on 30 Jul 2003 at 13:32:42 EDT.
Copyright IBM Corporation, 1990, 2003