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| LANBK | Back to Index page |
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Prolog Control Block Contents LANBK DSECT LANVID DSECT LANRDD DSECT Storage Layout Cross Reference (Contains links to field and bit definitions) |
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| LANBK Prolog | Top of page |
NAME : HCPLANBK
DESCRIPTION: Virtual LAN Block
DSECT : LANBK
FUNCTION :
Define a structure to represent a Virtual LAN or VSwitch
(Local Area Network) within z/VM.
For performance reasons the LANBK is allocated as a
fixed 1024 byte control block from z/VM's Aligned Memory
Storage Pool. This will insure the LANBK starts on
cache-aligned boundary spanning three different
cache-lines. The LANBK is organized to contain z/VM
referenced fields within the fist two cache-lines. The
third cache-line will only contain the LANBK Lock
(LANLKWRD). This will minimize cache missed hot spots
from occurring in the main-line data transfer routines.
(LANBK) Virtual LAN Block
0 +--------------------------------+
| Section 1 |
| |
Cache | z/VM Referenced Fields |
Line 1 | |
| |
+--------------------------------+
100x | Section 2 |
| |
| z/VM Referenced Fields |
Cache | |
Line 2 | |
| |
+--------------------------------+
200x | Section 3 |
| |
| z/VM Referenced Fields |
Cache | |
Line 2 | |
| |
+--------------------------------+
300x | Section 4 |
| |
| LANLKWRD Lock Word Only |
Cache | |
Line 3 | |
| (no other referenced fields) |
| |
+--------------------------------+
400x Fixed 1024 Byte Block
LOCATED BY : SLMLANTB - The System LAN Table
CREATED BY : Dynamically created by HCPGETST when a DEFINE
LAN or VSwitch CP Command is issued.
DELETED BY : Deleted by HCPRELST while processing either
a DETACH LAN or VSwitch CP Command.
RELOCATION CONSIDERATIONS : None
REFERENCES :
HCPEQUAT COPY - General CP equates
NOTES :
- The following tags are used to described the
address type for pointers within this control block:
A : Host absolute address
R : Host real address
L : Logical address in the system execution space
G : Guest absolute address
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| LANBK Control Block Content | Top of page |
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| LANBK Storage Layout | Top of page |
*** LANBK - Virtual LAN Block
*
* +-------------------------------------------------------+
* 0 | LANOWNER |
* +-------------------------------------------------------+
* 8 | LANNAME |
* +-------------------------------------------------------+
* 10 | LANDESC |
* +-------------------------------------------------------+
* 18 | LANDEFBY |
* +---------------------------+------+------+------+------+
* 20 | LANDFTOD |:TYPE |:PROTO|:LEVEL|:TRANP|
* +---------------------------+------+------+------+------+
* 28 |///////////////////////////////////////////////////////|
* =///////////////////////////////////////////////////////=
* |///////////////////////////////////////////////////////|
* +------+------+-------------+---------------------------+
* 40 |:CFLG |:CFLG2| LANIPTO | LANRFCTR |
* +------+------+-------------+---------------------------+
* 48 | LANFPNT | LANBPNT |
* +---------------------------+---------------------------+
* 50 | LANACLHD | LANACLTL |
* +---------------------------+---------------------------+
* 58 | LANMFS | LANMAXCN |
* +---------------------------+---------------------------+
* 60 | LANCNLST | LANCNCTR |
* +---------------------------+---------------------------+
* 68 | LANUPDBY |
* +---------------------------+-------------+------+------+
* 70 | LANSPBLK | LANDFVID |:DFPRT|LANFSV|
* +---------------------------+------+------+------+------+
* 78 | LANSPEED |:VDFLG|//////| LANDEV# |
* +---------------------------+------+------+-------------+
* 80 |///////////////////////////| LANPROM |
* +---------------------------+-------------+-------------+
* 88 | LANMCTBL | LANMCCTR | LANMRCTR |
* +---------------------------+-------------+-------------+
* 90 | |
* = LANIDTBL =
* | |
* +---------------------------+-------------+-------------+
* B0 | LANIPTBL | LANIPCTR | LANNVID |
* +---------------------------+-------------+------+------+
* B8 | LANVLANL | LANMACSF |:FORW |
* +---------------------------+--------------------+------+
* C0 | LANTRID | LANSUSR |
* +---------------------------+---------------------------+
* C8 | LANTRCBK | LANRTBL |
* +---------------------------+---------------------------+
* D0 | LANNCUSR |
* +-------------+------+------+---------------------------+
* D8 | LANNCDEV |(0DA) |(0DB) | LANUPPT |
* +-------------+------+------+-------------+-------------+
* E0 | LANNICBK | LANVMERR | LANVMRTY |
* +---------------------------+-------------+-------------+
* E8 | |
* = LANCTLCK =
* | |
* +-------------------------------------------------------+
* 100 | LANCONT |
* +-------------------------------------------------------+
* 108 | LANCON2 |
* +-------------------------------------------------------+
* 110 | LANCON3 |
* +-------------------------------------------------------+
* 118 | LANCON4 |
* +-------------------------------------------------------+
* 120 | LANCON5 |
* +-------------------------------------------------------+
* 128 | LANCON6 |
* +-------------------------------------------------------+
* 130 | LANCON7 |
* +-------------------------------------------------------+
* 138 | LANCON8 |
* +---------------------------+------+------+-------------+
* 140 |///////////////////////////|:CTSTA|:CTFLG| LANCONCT |
* +---------------------------+------+------+-------------+
* 148 | LANUSEFX | LANIPCHN |
* +---------------------------+---------------------------+
* 150 | LANIPCHE | LANIPCNT |
* +---------------------------+---------------------------+
* 158 | LANRRDEV | LANRRDVT |
* +---------------------------+---------------------------+
* 160 | LANSWPBK | LANMGIPA |
* +---------------------------+---------------------------+
* 168 | LANMGSWI | LANMGPOH |
* +------+------+-------------+---------------------------+
* 170 |:MACPR|:CFLG3|/////////////| LANMGNIC |
* +------+------+-------------+---------------------------+
* 178 | LANMGPTR | LANSWOVT |
* +---------------------------+---------------------------+
* 180 | LANMGTIM |
* +---------------------------+------+--------------------+
* 188 | LANBPBLK |:CFLG4|////////////////////|
* +-------------+-------------+------+--------------------+
* 190 | LANPMTUD | LANFRMSZ | LANSWOVS |
* +-------------+-------------+-------------+-------------+
* 198 | LANTRACE | LANPAGES | LANIOFF |
* +---------------------------+-------------+-------------+
* 1A0 | LANIVLDPTXBYT |
* +-------------------------------------------------------+
* 1A8 | LANIVLDPRXBYT |
* +-------------------------------------------------------+
* 1B0 | LANIVLDPTXPKT |
* +-------------------------------------------------------+
* 1B8 | LANIVLDPRXPKT |
* +---------------------------+---------------------------+
* 1C0 | LANGVSENBK |///////////////////////////|
* +---------------------------+---------------------------+
* 1C8 | |
* = LANRXTBL =
* | |
* +-------------------------------------------------------+
* 1E8 |///////////////////////////////////////////////////////|
* =///////////////////////////////////////////////////////=
* |///////////////////////////////////////////////////////|
* +-------------------------------------------------------+
* 200 |///////////////////////////////////////////////////////|
* =///////////////////////////////////////////////////////=
* |///////////////////////////////////////////////////////|
* +-------------------------------------------------------+
* 300 | |
* = LANLKWRD =
* | |
* +-------------------------------------------------------+
* 318 |///////////////////////////////////////////////////////|
* =///////////////////////////////////////////////////////=
* |///////////////////////////////////////////////////////|
* +--------------------+----------------------------------+
* 3F8 | LAN$FLAG | LAN$ID |
* +--------------------+----------------------------------+
* 400
*
*** LANBK - Virtual LAN Block
*** LANVID - Virtual LAN Block
*
* +---------------------------+---------------------------+
* 0 | LANVID_FPNT | LANVID_BPNT |
* +-------------+-------------+---------------------------+
* 8 | LANVID_ID |/////////////| LANVID_CTR |
* +-------------+-------------+---------------------------+
* 10 | LANVID_DLCTR | LANVID_TIMC- |
* +---------------------------+---------------------------+
* 18 | -(014) | LANVID_TIMU- |
* +---------------------------+---------------------------+
* 20 | -(01C) |///////////////////////////|
* +---------------------------+---------------------------+
* 28
*
*** LANVID - Virtual LAN Block
*** LANRDD - Virtual LAN Block
*
* +---------------------------+---------------------------+
* 0 | LANRDD_NEXT | LANRDD_PREV |
* +---------------------------+---------------------------+
* 8 | LANRDD_CTPTR | LANRDD_VQSBK |
* +-------------+-------------+---------------------------+
* 10 |LANRDD_RDEV |LANRDD_VDEV | LANRDD_PORT- |
* +-------------+-------------+------+------+------+------+
* 18 | -(014) |(01C) |(01D) |(01E) |(01F) |
* +---------------------------+------+------+------+------+
* 20 | LANRDD_SWPPTR | LANRDD_XFPNT |
* +---------------------------+------+------+------+------+
* 28 | LANRDD_XBPNT |(02C) |(02D) |(02E) |(02F) |
* +-------------+-------------+------+------+------+------+
* 30 |LANRDD_PCHID |/////////////////////////////////////////|
* +-------------+-----------------------------------------+
* 38
*
*** LANRDD - Virtual LAN Block
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| LANBK Cross Reference | Top of page |
Copyright IBM Corporation, 1990, 2018
