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Programming Interface Information:
This information is NOT intended to be used as Programming Interfaces of z/VM. |
NODBK
Control Block Contents
NODBK DSECT
Cross Reference (Contains links to field and bit definitions)
NODBK Prolog
NAME : HCPNODBK
DESCRIPTION: ISFC Node description block
DSECT : NODBK
FUNCTION : Maintain information about an ISFC node
in the collection.
LOCATED BY : HCPBUTNT points to the linked list of NODBKs.
CREATED BY : HCPBUUAN whenever called to create a node.
DELETED BY : HCPBUURN whenever a node is deleted from collection.
SERIALIZED : The ISFC global lock (HCPBDSGL) and the Kernel Communi-
cations Lock (KCMLKWRD).
-- In order to change the NODBK chain, both locks must
be held EXCLUSIVE.
-- A search of the NODBK chain may be done with either
lock held SHARED.
Fields in the NODXBK section are serialized by the
NODXLOCK.
All other fields are protected by the ISFC Global Lock.
RELOCATION CONSIDERATIONS : None
NODBK Control Block Content
NODBK DSECT
Hex Dec Type/Val Lng Label (dup) Comments
---- ---- --------- ---- -------------- --------
0000 0 Structure NODBK ISFC Node description block
NODBK management.
0000 0 Character 8 NODEID REMOTE NODE ID
0008 8 Signed 4 NODLNKAD ADDRESS OF LNKBK WILL BE ZERO FOR
LOCAL NODE
000C 12 Signed 4 NODNEXT ADDR OF NEXT NODBK IN TABLE
0010 16 Signed 4 NODPTHAD ADDRESS OF PTHBK FOR NODBK
0014 20 Signed 4 NODCAP (0) CAPABILITIES
0014 20 Bitstring 1 NODCAP1 FIRST BYTE OF CAPABILITIES
1... .... NODRES X'80' NODRES WANTS RESOURCES AND
GATEWAYS
.1.. .... NODUSER X'40' NODUSER ACCEPTS USERID
SEARCHES
..1. .... NODPASS X'20' NODPASS ACCEPTS PASSWORD
SEARCHES
...1 .... NODBCR X'10' NODBCR Supports broadcast
routing
.... 1... NODCSAR X'08' NODCSAR Supports CS_Area
.... .1.. NODPWE X'04' NODPWE Supports password
encryption
.... ..1. NODIDENT X'02' NODIDENT Accepts *IDENT
verify reqs
.... ...1 NODALERT X'01' NODALERT Alert focal point
0015 21 Bitstring 1 NODCAP2 Second Capabilities Byte
1... .... NODEJRNL X'80' NODEJRNL Enhanced
Journaling handled
.1.. .... NODDIUCV X'40' NODDIUCV Distributed IUCV
handled
..1. .... NODCPAP X'20' NODCPAP CP Applications and
big IUCV send handled by this
node
...1 .... NODVARLN X'10' NODVARLN VM-defined
variable-length section after the
FMH5 supported.
.... 1... NODVFYND X'08' NODVFYND VERIFY NODE
supported
.... .1.. NODSOCK X'04' NODSOCK Sockets supported
0016 22 Bitstring 2 * Save - future Capabilities
0018 24 Bitstring 8 NODPACQU MDEBK queue awaiting pacing
0020 32 Signed 4 NODSNTCT COUNT OF FRAMES SENT SINCE LAST
PACE
0024 36 Signed 4 NODPACCT NUMBER OF FRAMES THAT CAN BE SENT
0028 40 Bitstring 1 NODFLAGS FLAG BYTE
1... .... NODESTAB X'80' NODESTAB NODE IS ALREADY
ESTABLISHED
.1.. .... NODPACRQ X'40' NODPACRQ WE REQUESTED
PACING RESPONSE
..1. .... NODGONE X'20' NODGONE THIS NODE IS GONE
...1 .... NODPACAN X'10' NODPACAN We owe a pacing
response
.... 1... NODREMOT X'08' NODREMOT Node is remote
0029 41 Bitstring 3 * Reserved for IBM Use
002C 44 Signed 4 NODAPPCM POINTER TO APPC MAILBOX ENTRY
0030 48 Signed 4 NODCMPM POINTER TO CMP MAILBOX ENTRY
0034 52 Signed 4 NODLINKM POINTER TO LINK MAILBOX ENTRY
0038 56 Signed 4 NODFRMIU NUMBER OF FRAMES IN USE BY NODE
003C 60 Signed 4 NODTHRES RESUME VALUE FOR THIS NODE
0040 64 Signed 4 NODPTHIU Number of active PTHBKs
0044 68 Signed 4 NODIUCVM IUCV mailbox entry
0048 72 Signed 4 NODCPAPM Pointer to CP applications
mailbox entry
004C 76 Signed 4 NODRESPD Pending Resource msg MDEBK
0050 80 Signed 4 * Reserved
0054 84 Signed 4 * Reserved
0058 88 Signed 4 NODPLXMS VMPLEX System Mask
005C 92 Signed 2 NODPLXSL VMPLEX Slot Number
005E 94 Signed 2 * Reserved
- Discarded fields report traffic destined for this node,
but no path was found to the node.
0060 96 Dbl-Word 8 NODDSNMS "Sent" Messages discarded
0068 104 Dbl-Word 8 NODDSNBT "Sent" Bytes discarded
0070 112 Dbl-Word 8 NODXLOCK (3) Node Extension Lock
Sync Services Area
0088 136 Signed 4 * (3) Reserved
0094 148 Signed 2 NODXHOPS Hops to this node
0096 150 Bitstring 2 * Reserved
0098 152 Address 4 NODXNEIG NODBK of neighbor node used to
get to this node.
009C 156 Signed 4 * Reserved
00A0 160 Dbl-Word 8 NODXSYRQ Node Sync Request value
00A8 168 Dbl-Word 8 NODXSYRS Node Sync Response value
00B0 176 Dbl-Word 8 NODXSYTC Latest Completed Time Sync Check
00B8 184 Dbl-Word 8 NODXSYTO Time Sync Offset
00C0 192 Dbl-Word 8 NODXRTMY Time Sync Round trip
00C8 200 Dbl-Word 8 NODXTOPT TS Offset (partner's view)
00D0 208 Dbl-Word 8 NODXIPLN New IPL TOD value for node
00D8 216 Dbl-Word 8 * (3) Reserved for IBM use
0000001E NODSIZE (*-NODBK+7)/8
NODBK Storage Layout
*** NODBK - ISFC Node description block
*
* +-------------------------------------------------------+
* 0 | NODEID |
* +---------------------------+---------------------------+
* 8 | NODLNKAD | NODNEXT |
* +---------------------------+------+------+-------------+
* 10 | NODPTHAD |:CAP1 |:CAP2 |/////////////|
* +---------------------------+------+------+-------------+
* 18 | NODPACQU |
* +---------------------------+---------------------------+
* 20 | NODSNTCT | NODPACCT |
* +------+--------------------+---------------------------+
* 28 |:FLAGS|////////////////////| NODAPPCM |
* +------+--------------------+---------------------------+
* 30 | NODCMPM | NODLINKM |
* +---------------------------+---------------------------+
* 38 | NODFRMIU | NODTHRES |
* +---------------------------+---------------------------+
* 40 | NODPTHIU | NODIUCVM |
* +---------------------------+---------------------------+
* 48 | NODCPAPM | NODRESPD |
* +---------------------------+---------------------------+
* 50 |///////////////////////////|///////////////////////////|
* +---------------------------+-------------+-------------+
* 58 | NODPLXMS | NODPLXSL |/////////////|
* +---------------------------+-------------+-------------+
* 60 | NODDSNMS |
* +-------------------------------------------------------+
* 68 | NODDSNBT |
* +-------------------------------------------------------+
* 70 | |
* = NODXLOCK =
* | |
* +-------------------------------------------------------+
* 88 |///////////////////////////////////////////////////////|
* |///////////////////////////+-------------+-------------+
* 90 |///////////////////////////| NODXHOPS |/////////////|
* +---------------------------+-------------+-------------+
* 98 | NODXNEIG |///////////////////////////|
* +---------------------------+---------------------------+
* A0 | NODXSYRQ |
* +-------------------------------------------------------+
* A8 | NODXSYRS |
* +-------------------------------------------------------+
* B0 | NODXSYTC |
* +-------------------------------------------------------+
* B8 | NODXSYTO |
* +-------------------------------------------------------+
* C0 | NODXRTMY |
* +-------------------------------------------------------+
* C8 | NODXTOPT |
* +-------------------------------------------------------+
* D0 | NODXIPLN |
* +-------------------------------------------------------+
* D8 |///////////////////////////////////////////////////////|
* =///////////////////////////////////////////////////////=
* |///////////////////////////////////////////////////////|
* +-------------------------------------------------------+
* F0
*
*** NODBK - ISFC Node description block
NODBK Cross Reference
Symbol Dspl Value -------------- ---- ----- NODALERT 0014 01 NODAPPCM 002C NODBCR 0014 10 NODCAP 0014 NODCAP1 0014 NODCAP2 0015 NODCMPM 0030 NODCPAP 0015 20 NODCPAPM 0048 NODCSAR 0014 08 NODDIUCV 0015 40 NODDSNBT 0068 NODDSNMS 0060 NODEID 0000 NODEJRNL 0015 80 NODESTAB 0028 80 NODFLAGS 0028 NODFRMIU 0038 NODGONE 0028 20 NODIDENT 0014 02 NODIUCVM 0044 NODLINKM 0034 NODLNKAD 0008 NODNEXT 000C NODPACAN 0028 10 NODPACCT 0024 NODPACQU 0018 NODPACRQ 0028 40 NODPASS 0014 20 NODPLXMS 0058 NODPLXSL 005C NODPTHAD 0010 NODPTHIU 0040 NODPWE 0014 04 NODREMOT 0028 08 NODRES 0014 80 NODRESPD 004C NODSIZE 00D8 0000001E NODSNTCT 0020 NODSOCK 0015 04 NODTHRES 003C NODUSER 0014 40 NODVARLN 0015 10 NODVFYND 0015 08 NODXHOPS 0094 NODXIPLN 00D0 NODXLOCK 0070 NODXNEIG 0098 NODXRTMY 00C0 NODXSYRQ 00A0 NODXSYRS 00A8 NODXSYTC 00B0 NODXSYTO 00B8 NODXTOPT 00C8
Copyright IBM Corporation, 1990, 2011