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

VLCBK

Prolog  

Control Block Contents  
   VLCBK DSECT

Storage Layout  

Cross Reference (Contains links to field and bit definitions)  


VLCBK Prolog

 NAME       : HCPVLCBK
 DESCRIPTION: VLAN Counter Structure
 DSECT      : VLCBK
 FUNCTION   :
              Each VLCBK represents a list of VLAN counters for use with
              SNMP and Diag '26'C
              The VLCBK structure is fixed length.
 LOCATED BY -
   NICCTRVLN - Pointer to VLAN Counter structure.
 CREATED BY :
              Define NIC / NICDEF - Nicbk creation
 DELETED BY :
              Detach Nic - Nicbk destruction
 RELOCATION CONSIDERATIONS : None

 

VLCBK Control Block Content


VLCBK DSECT

Hex   Dec Type/Val   Lng Label (dup)    Comments
---- ---- --------- ---- -------------- --------
0000    0 Structure      VLCBK          VLAN Counter Structure
      Link to owning structure.
        This is a pointer to the owning NICBK.
0000    0 Address      4 VLCNICBK       Pointer to owning NICBK
0004    4 Address      4 *              Reserved unless NICBK is AD
0008    8 Signed       2 VLCVLAN        VLAN ID
000A   10 Signed       2 *              Reserved
      Counters.
0010   16 Dbl-Word     8 VLCCTR (0)     All counters
0010   16 Dbl-Word     8 VLCRX          Count of frames IN on this VLAN
0018   24 Dbl-Word     8 VLCTX          Count of frames OUT on this VLAN
0020   32 Dbl-Word     8 VLCRXDSC       Frames discarded on INPUT
0028   40 Dbl-Word     8 VLCTXDSC       Frames discarded on OUTPUT
          00000030       VLCCTRLN       *-VLCBK Length of structure
          00000006       VLCBKSZ        (*-VLCBK+7)/8 Length in
                                        doublewords

 

VLCBK Storage Layout

          
*** VLCBK - VLAN Counter Structure
*
*     +---------------------------+---------------------------+
*   0 |         VLCNICBK          |///////////////////////////|
*     +-------------+-------------+---------------------------+
*   8 |  VLCVLAN    |/////////////|///////////////////////////|
*     +-------------+-------------+---------------------------+
*  10 |                        VLCRX                          |
*     +-------------------------------------------------------+
*  18 |                        VLCTX                          |
*     +-------------------------------------------------------+
*  20 |                       VLCRXDSC                        |
*     +-------------------------------------------------------+
*  28 |                       VLCTXDSC                        |
*     +-------------------------------------------------------+
*  30
*
*** VLCBK - VLAN Counter Structure

 

VLCBK Cross Reference

Symbol         Dspl Value
-------------- ---- -----
VLCBKSZ        0028 00000006
VLCCTR         0010
VLCCTRLN       0028 00000030
VLCNICBK       0000
VLCRX          0010
VLCRXDSC       0020
VLCTX          0018
VLCTXDSC       0028
VLCVLAN        0008

This information is based on z/VM V6R2.0. Last updated on 21 Nov 2011 at 11:30:05 EDT.
Copyright IBM Corporation, 1990, 2011