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Hex Dec Type/Val Lng Label (dup) Comments
---- ---- --------- ---- -------------- --------
0000 0 Structure SLMBK System LAN Management block
LAN Management Lock -
Notes : LKWRDSIZ == 3 doublewords.
0000 0 Dbl-Word 8 SLMLKWRD (3) Adapter Lockword
System LAN Management -
These fields are used to control and access the
independent Virtual LAN structures in the system.
The Set VMLAN command lock (SLMSVMLK) must be held
EXCLUSIVE when processing a Set VMLAN ENSEMBLE command.
This lock is used to serialize and indicate that a
SET VMLAN ENSEMBLE command is active on this system.
This lock MUST be obtained conditionally in order to
detect that the command is currently being issued by
someone else and also to allow it to be held across the
HCPSOCK call.
The LAN Management Lock (SLMLKWRD) must be held
EXCLUSIVE to modify these fields.
The LAN Management LOCK (SLMLKWRD) must be held
SHARED to reference these fields.
Lock Hierarchy -
The following list is arranged to represent the sequence
in which these locks must be OBTAINED (when multiple
locks are required):
These tiers show the order for obtaining virtual
networking locks. Jump in at an level, but from that point
on, you may obtain additional locks ONLY from a lower
tier.
Tier 0: VDEVLOCK IVLHLOCK
----------------------------------------------------------
Tier 1: NICLKWRD IVLMLOCK
----------------------------------------------------------
Tier 2: SLMSVMLK
----------------------------------------------------------
Tier 3: SLMLKWRD
----------------------------------------------------------
Tier 4: LANLKWRD
----------------------------------------------------------
Tier 5: BPBCFGLK NPBLOCK
----------------------------------------------------------
Tier 6: BPBLOCK GVSHLOCK
----------------------------------------------------------
Tier 7: SLMACDLK
----------------------------------------------------------
Tier 9: MSVLKWRD SWPLOCK
----------------------------------------------------------
Tier 9: QIOLOCK SLMMACLK SLMSWLCK SPBLOCK GPGLOCK
----------------------------------------------------------
Tier 10: RDEVLOCK LANCTLCK NICCTRLK
----------------------------------------------------------
Tier 11: ILMLKWRD
----------------------------------------------------------
0018 24 Address 4 SLMLANHD Pointer to the First LANBK
001C 28 Signed 4 * Reserved for Future IBM Use
0020 32 Signed 4 SLMPXCTR Count of PERSISTENT VM LAN
0024 36 Signed 4 SLMTXCTR Count of TRANSIENT VM LAN
0028 40 Signed 4 SLMPXMAX Limit for PERSISTENT VM LAN
002C 44 Signed 4 SLMTXMAX Limit for TRANSIENT VM LAN
0030 48 Bitstring 1 SLMCFLAG Control Flag:
1... .... SLMPXLIM X'80' SLMPXLIM - LIMIT PERSISTENT
(SLMPXMAX)
.1.. .... SLMTXLIM X'40' SLMTXLIM - LIMIT TRANSIENT
(SLMTXMAX)
..1. .... SLMMACRS X'20' SLMMACRS - MACIDRANGE
SYSTEM set
...1 .... SLMMACRU X'10' SLMMACRU - MACIDRANGE USER
set
.... 1... SLMPICMP X'08' SLMPICMP - Post
Initialization Complete
.... .1.. SLMNODNA X'04' SLMNODNA - DNA support
DISABLED
.... ..1. SLMNOMSG X'02' SLMNOMSG - Supress HCPSWUIS
messages
0031 49 Bitstring 1 SLMACNT Accounting Flags:
1... .... SLMSYSAC X'80' SLMSYSAC - SYSTEM ACNT
default = ON
.1.. .... SLMUSRAC X'40' SLMUSRAC - USER ACNT
default = ON
0032 50 Bitstring 1 SLMMACPR VMLAN MACprotect setting
.... .... SLMMACPR_UNSPEC
0 SLMMACPR_UNSPEC = Unspecified
.... ...1 SLMMACPR_ON 1 SLMMACPR_ON = On
.... ..1. SLMMACPR_OFF 2 SLMMACPR_OFF = Off
MAC Services State (Finite State Machine)
Determines whether MAC Address assignments may be made by
this system. When state values are below x'80', this
system may assign a MAC Address to a network device.
State Description
----- -----------
Single The system is not configured as a member of
a SSI cluster. Cross system MAC Address is
not necessary. This is the default state.
Inactive The system is configured to run in a SSI
cluster, but currently is not an active
member. SSI JOIN processing did not start,
complete or wasn't successful. This system
is prohibited from configuring network
devices or assigning MAC Addresses.
Disable The system is a member of a SSI cluster, but
the SSI is NOT in a STABLE mode. This system
is prohibited from configuring network
devices or assigning MAC Addresses.
Verify The system is a member of a SSI cluster and
the SSI is in a STABLE mode. The cross
system MAC Address MLT synchronization
initiated at SSI JOIN time has not completed.
Until the MAC Address table is synchronized
with all members of the SSI, all system
assigned MAC address must be validated with
all members of the SSI before assigning a MAC
Address.
Enable The system is a member of a SSI cluster and
the SSI is in a STABLE mode. No cross system
MAC Address validation is required for local
system define MAC Addresses.
IPL Valid State
Transitions
|
+------------ V
| +-----------+
| SINGLE |
Not a SSI Cluster | |
Enabled | SLMAC1SY |
State +-----------+
|
|
| |
+------------ V
| +-----------+ +-----------+
| INACTIVE | | DISABLE |
SSI +----->| |<---->| |
Disabled | | SLMACINA | | SLMACUTB |
Modes | +-----------+ +-----------+
| A A
| | | |
+------------ | | |
| | | |
| V V
SSI | +-----------+ +-----------+
Enabled | | ENABLE | | VERIFY |
Modes | | |<---->| |
| | SLMACPLX | | SLMACVER |
| | +-----------+ +-----------+
+------------ | A
| |
+-------------------------------+
NOTE: Bit 0 of the MAC Services state (SLMACSRV)
indicates whether the service is ENABLED or
DISABLE. Therefore, SLMACDIS equate is both a
state and bit mask value.
Serialized :
SLMACSRV is serialized by SLMMACLK Lock.
RELOCATION CONSIDERATIONS : None
0033 51 Bitstring 1 SLMACSRV MAC Services State
00000000 SLMAC1SY X'00' SLMAC1SY Not a SSI
Configured System
00000001 SLMACPLX X'01' SLMACPLX Enabled for SSI
00000002 SLMACVER X'02' SLMACVER Enabled with
validation
00000080 SLMACDIS X'80' SLMACDIS Start of Disabled
States
00000081 SLMACINA X'81' SLMACINA Not a SSI Member
Yet
00000082 SLMACUTB X'82' SLMACUTB SSI Mode is NOT
STABLE
SYSTEM MAC PREFIX Serialized: SLMMACLK Lock
0034 52 Bitstring 3 SLMMACPF VMLAN MACADDR Prefix
Flag used to enable display of controller messages.
Set to X'37' = X'FF'-(SLMMSGON+SLMMSGHX+SLMMSGIN)
This is used as the "expected" value by tools such as ZAPCP
0037 55 Bitstring 1 SLMMSGFL VSWITCH controller message disply
1... .... SLMMSGON X'80' SLMMSGON - Display
controller message info
.1.. .... SLMMSGHX X'40' SLMMSGHX - Display details
as hex data
.... 1... SLMMSGIN X'08' SLMMSGIN - Message is FROM
controller
MAC Address Table (serialized by SLMMACLK).
Notes : LKWRDSIZ == 3 doublewords.
0038 56 Dbl-Word 8 SLMMACLK (3) MACADDR Table Lockword Also
protects the SLMMSVBK chain.
BLOCKMAP DEFINE SLMMACTB (4)D
0050 80 Dbl-Word 8 SLMMACTB (4) Reserve a MLTBK here
Periodic Maintenance for VM LAN.
0070 112 Signed 4 SLMPMCTR Periodic Maintenance counter
0074 116 Signed 4 SLMPMFRQ Frequency of Maintenance (Number
of SRMTIMIN intervals to count
between calls)
0078 120 Bitstring 1 SLMSD_ACTIVE Set during HCPSWMSD task This is
to ensure only 1 instance of this
task is active.
0079 121 Bitstring 1 SLMPM_ACTIVE Set (TS) during maintenance
007A 122 Bitstring 1 SLMDCINT Deferred Controller Assignment
Interval Time (# of 30 second
intervals to wait)
00000002 SLMDCA 2 Default Deferred Controller
INTV (30 to 60 seconds wait time)
007B 123 Bitstring 1 SLMCSTSK Controller Stall Detection Task
Active Indicator (FF=Active)
Deferred VSwitch / Port Group Creation ECB
007C 124 Signed 4 SLMDECB Deferred VSwitch/PG Create ECB
NDMBK Global Recycle Queue fields (serialized by SLMNDMLK)
0080 128 Signed 4 SLMFRMCT Current count of batches on NDMBK
global recycle queue
0084 132 Address 4 SLMFRMQP Pointer to first batch of NDMBKs
on the NDMBK global recycle queue
Notes : SLMSWIPT/SLMSWICT access controlled by SLMSWLCK
0088 136 Address 4 SLMSWIPT Switch Eligible Table Pointer
008C 140 Signed 4 SLMSWICT Switch Eligible Table Counter
0090 144 Dbl-Word 8 * (0) Align lockword on doubleword
0090 144 Bitstring 24 SLMSWLCK Switch Eligible Table Lock
00A8 168 Address 4 SLMDIPHD First Delete in Progress Pointer
00AC 172 Signed 4 SLMDIPCT Delete in Progress Counter
00B0 176 Character 8 SLMPM_LANOWNER LANOWNER of most recent LANBK
00B8 184 Character 8 SLMPM_LANNAME LANNAME of most recent LANBK
00C0 192 Signed 8 SLMPM_OLDTOD Prior TOD clock
00C8 200 Signed 8 SLMPM_NEWTOD Current TOD clock
Timeout / Failover values for Guest Lan / VSWITCH
00D0 208 Dbl-Word 8 * (0) Align on doubleword
00D0 208 Signed 4 SLMOSATO VSWITCH OSA timeout (seconds)
00D4 212 Signed 4 SLMUSRTO User interface timeout (seconds)
00D8 216 Dbl-Word 8 SLMCONTR Controller hang time out value
00E0 224 Dbl-Word 8 SLMSETIP SETIP Throttle time out value
00E8 232 Bitstring 12 SLMMACRG (0) VMLAN MACIDRANGE values
00E8 232 Bitstring 6 SLMMACSY (0) VMLAN MACIDRANGE SYSTEM begin-end
00E8 232 Bitstring 3 SLMMACSB SYSTEM begin
00EB 235 Bitstring 3 SLMMACSE SYSTEM end
00EE 238 Bitstring 6 SLMMACUS (0) VMLAN MACIDRANGE USER begin-end
00EE 238 Bitstring 3 SLMMACUB USER begin
00F1 241 Bitstring 3 SLMMACUE USER end
00F4 244 Signed 4 SLM26CVR (0) Diag x26C Buffer Version
00F4 244 Signed 2 SLM26CSV - Service level version
00F6 246 Signed 2 SLM26CRV - Release level version
00F8 248 Address 4 SLMSWPHD Ptr to first SWPBK
00FC 252 Signed 2 SLMSWCTR SWPBK counter
00FE 254 Bitstring 1 SLMFLAG Reserved for IBM Internal Use
1... .... SLMALLOW X'80' SLMALLOW - Allow flag
00FF 255 Bitstring 1 * Reserved
0100 256 Dbl-Word 8 SLMRRTIM Trunk retry time out value
0108 264 Signed 4 SLMWTMGRS Managers waiting for VSWITCH
creation
010C 268 Signed 4 SLMVDEVN High water mark for VSWITCH
pseudo-virtual device number
0110 272 Address 4 SLMMSVBK HCPMSVBK VSWITCH chain anchor,
holding virtual MAC assignment
info. This chain, and the fields
in its MSVBKs is protected by the
SLMMACLK.
USER MAC PREFIX Serialized: SLMMACLK Lock
0114 276 Signed 4 * (0) Enforce storage alignment
0114 276 Bitstring 3 SLMUSERP VMLAN User MACADDR Prefix
0117 279 Bitstring 1 * Reserved for Future IBM Use
0118 280 Signed 4 * (0) Enforce storage alignment
0118 280 Bitstring 3 * Reserved for Future IBM Use
011B 283 Bitstring 1 * Reserved for Future IBM use
VSWITCH Defer Creation Queue
Anchor for a link list of SL1BKs (define below). Each
SL1BK represents either a VSWITCH or MODIFY VSWITCH
or a MODIFY PORT GROUP statment
defined in z/VM's SYSTEM CONFIG file which can't
be created until the IVL Virtual switch is connected.
SLMDEFER ----> +---------+
"A" | SL1NEXT | SL1BK "A"
| "B" |
(First) +---------+
|
| +---------+
+-->| SL1NEXT | SL1BK "B"
| "C" |
+---------+
|
| +---------+
+-->| SL1NEXT | SL1BK "C"
SLMDNEXT ----------------------->| "0" |
"C" +---------+
{Last)
Serialized: SLMLKWRD Lock
011C 284 Bitstring 1 SLMDFLAG Deferred VSWITCH Flags
1... .... SLMDPROC X'80' SLMDPROC Processing in
progress or has already been
completed
011D 285 Bitstring 1 * Reserved for future IBM use
011E 286 Signed 2 SLMDCNT Count of DEFERRED VSWITCHes,
MODIFY VSWITCHes excluded
0120 288 Dbl-Word 8 SLMDPTRS (0) VSWITCH DEFERRED Queue Pointers
0120 288 Address 4 SLMDEFER VSWITCH Defer Creation Queue
0124 292 Address 4 SLMDNEXT Last entry on DEFERRED Queue End
of VSWITCH Pointers -------
0128 296 Dbl-Word 8 * (0) Enforce storage alignment
0128 296 Bitstring 16 * Reserved for Future IBM Use
0138 312 Bitstring 6 * Reserved for Future IBM Use
013E 318 Bitstring 2 * Reserved for Future IBM Use
0140 320 Bitstring 16 * Reserved for future IBM use
0150 336 Bitstring 2 * Reserved for future IBM use
0152 338 Bitstring 1 * Reserved for future IBM use
0153 339 Bitstring 1 * Reserved for future IBM use
0154 340 Bitstring 8 * Reserved for future IBM use
015C 348 Signed 4 SLMTIMID Network Shutdown Timer ID
0160 352 Dbl-Word 8 SLMSVMLK (3) Set VMLAN Command Lock
MAC Address MLT Table Deletion Lock
This lock is used to serialize the deletion of MAC
Addresses (MSVBKs) from this system's MAC Address
(SLMMACTB MLT) Table.
0178 376 Dbl-Word 8 SLMACDLK (3) MAC Address Deletion Lock
MIH Supersede Values for Bridge and UpLink Ports
MIRATE = Number of 5 second intervals allowed for the I/O
operation to complete before MIH recovery takes
place.
0190 400 Signed 2 SLMIHT1 LPAR (First Level) MIRATE
0192 402 Signed 2 SLMIHT2 Virtual Machine (2nd Level)RATE
VNET Private Trace Table Information
0194 404 Signed 4 SLMTRACE VNET Private Trace Token
0198 408 Signed 2 SLMPAGES VNET Private Trace Size (pages)
019A 410 Bitstring 2 * Reserved for future IBM use
019C 412 Signed 4 SLMIVLMC Addr of IVL Manager MSVBK
01A0 416 Dbl-Word 8 SLMNDMLK (6) NDMBK global recycle queue lock
01D0 464 Signed 4 SLMUNQID Unique ID for vswitch
01D4 468 Signed 4 * Reserved for future IBM use
01D8 472 Dbl-Word 8 * Reserved for future IBM use
End of the SLMBK.
01E0 480 Dbl-Word 8 SLM$END (0) End of the SLMBK structure
000001E0 SLMBKLN *-SLMBK Length of SLMBK in bytes
0000003C SLMBKSZ (*-SLMBK+7)/8 Size of SLMBK in
doublewords
00000010 SLMBatchSize 16 NDMBK recycle queue batch size
00000020 SLMLocalHiThresh
2*SLMBatchSize NDMBK local
recycle queue high threshold
00000040 SLMMaxBatches 64 NDMBK global recycle queue
high threshold (in number of
batches)
PREFIX_LEN = 3
Start of Assembler Control Block
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