Programming Interface Information:
This information is NOT intended to be used as Programming Interfaces of z/VM. |
SLMBK
Control Block Contents
SLMBK DSECT
Cross Reference (Contains links to field and bit definitions)
SLMBK Prolog
NAME : HCPSLMBK DESCRIPTION: System LAN Management block DSECT : SLMBK FUNCTION : The SLMBK holds the status of System LAN Management. LOCATED BY - HCPLANSL = Pointer to SLMBK HCPLANSD = Area reserved for the SLMBK CREATED BY : Storage for the SLMBK is reserved in module HCPLAN when it is compiled. DELETED BY : None REFERENCES : HCPLANBK COPY - LANBK represents a single Virtual LAN HCPMLTBK COPY - MLTBK represents a multi-level table
SLMBK Control Block Content
SLMBK DSECT
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 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): NICLKWRD - NIC (adapter) Lock SLMLKWRD - System LAN Management Lock LANLKWRD - LAN Lock SLMSWLCK - Switch Eligible Table Lock (1) RDEVLOCK - RDEV Lock Address for VSWITCH OSA-E devices VDEVLOCK - VDEV Lock Address for VSWITCH OSA-E devices (1) LANCTLCK - LAN Controller Lock ILMLKWRD - IP LAN Management lock (1) Currently there are no conditions imposed on the sequence in which these locks are obtained, as long as the higher level and lower level locks are obtained in the proper order. 0018 24 Address 4 SLMLANHD Pointer to the First LANBK 001C 28 Bitstring 4 * Reserved 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' - LIMIT PERSISTENT (SLMPXMAX) .1.. .... SLMTXLIM X'40' - LIMIT TRANSIENT (SLMTXMAX) ..1. .... SLMMACRS X'20' - MACIDRANGE SYSTEM set ...1 .... SLMMACRU X'10' - MACIDRANGE USER set 0031 49 Bitstring 1 SLMACNT Accounting Flags: 1... .... SLMSYSAC X'80' - SYSTEM ACNT default = ON .1.. .... SLMUSRAC X'40' - USER ACNT default = ON 0032 50 Bitstring 2 * Reserved 0034 52 Bitstring 3 SLMMACPF VMLAN MACADDR Prefix 0037 55 Bitstring 1 * Reserved MAC Address Table (serialized by SLMMACLK). Notes : LKWRDSIZ == 3 doublewords. 0038 56 Dbl-Word 8 SLMMACLK (3) MACADDR Table Lockword 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 SLMFRMLK Spin Lock for SLMFRMQH 0079 121 Bitstring 1 SLMPM_ACTIVE Set (TS) during maintenance 007A 122 Bitstring 2 * Reserved 007C 124 Signed 4 SLMFRMMX Maximum recycled frame count 0080 128 Signed 4 SLMFRMCT Recycled Frame counter 0084 132 Address 4 SLMFRMQP Pointer to NDMBK recycle stack 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 SLMTODMAX Timeout (secs) Guest LAN queues 00D4 212 Signed 4 * Reserved 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 3 SLMMACSB SYSTEM begin 00EB 235 Bitstring 3 SLMMACSE SYSTEM end 00EE 238 Bitstring 3 SLMMACUB USER begin 00F1 241 Bitstring 3 SLMMACUE USER end 00F4 244 Bitstring 4 * Reserved End of the SLMBK. 00F8 248 Dbl-Word 8 SLM$END (0) End of the SLMBK structure 000000F8 SLMBKLN *-SLMBK Length of SLMBK in bytes 0000001F SLMBKSZ (*-SLMBK+7)/8 Size of SLMBK in doublewords PREFIX_LEN = 3 Start of Assembler Control Block
SLMBK Storage Layout
*** SLMBK - System LAN Management block * * +-------------------------------------------------------+ * 0 | | * = SLMLKWRD = * | | * +---------------------------+---------------------------+ * 18 | SLMLANHD |///////////////////////////| * +---------------------------+---------------------------+ * 20 | SLMPXCTR | SLMTXCTR | * +---------------------------+---------------------------+ * 28 | SLMPXMAX | SLMTXMAX | * +------+------+-------------+--------------------+------+ * 30 |:CFLAG|:ACNT |/////////////| SLMMACPF |//////| * +------+------+-------------+--------------------+------+ * 38 | | * = SLMMACLK = * | | * +-------------------------------------------------------+ * 50 | | * = SLMMACTB = * | | * +---------------------------+---------------------------+ * 70 | SLMPMCTR | SLMPMFRQ | * +------+------+-------------+---------------------------+ * 78 |:FRMLK|(079) |/////////////| SLMFRMMX | * +------+------+-------------+---------------------------+ * 80 | SLMFRMCT | SLMFRMQP | * +---------------------------+---------------------------+ * 88 | SLMSWIPT | SLMSWICT | * +---------------------------+---------------------------+ * 90 | | * = SLMSWLCK = * | | * +---------------------------+---------------------------+ * A8 | SLMDIPHD | SLMDIPCT | * +---------------------------+---------------------------+ * B0 | SLMPM_LANOWNER | * +-------------------------------------------------------+ * B8 | SLMPM_LANNAME | * +-------------------------------------------------------+ * C0 | SLMPM_OLDTOD | * +-------------------------------------------------------+ * C8 | SLMPM_NEWTOD | * +---------------------------+---------------------------+ * D0 | SLMTODMAX |///////////////////////////| * +---------------------------+---------------------------+ * D8 | SLMCONTR | * +-------------------------------------------------------+ * E0 | SLMSETIP | * +--------------------+--------------------+-------------+ * E8 | SLMMACSB | SLMMACSE | SLMMACUB- | * +------+-------------+------+-------------+-------------+ * F0 |-(0EE)| SLMMACUE |///////////////////////////| * +------+--------------------+---------------------------+ * *** SLMBK - System LAN Management block
SLMBK Cross Reference
Symbol Dspl Value -------------- ---- ----- SLM$END 00F8 SLMACNT 0031 SLMBKLN 00F8 000000F8 SLMBKSZ 00F8 0000001F SLMCFLAG 0030 SLMCONTR 00D8 SLMDIPCT 00AC SLMDIPHD 00A8 SLMFRMCT 0080 SLMFRMLK 0078 SLMFRMMX 007C SLMFRMQP 0084 SLMLANHD 0018 SLMLKWRD 0000 SLMMACLK 0038 SLMMACPF 0034 SLMMACRG 00E8 SLMMACRS 0030 20 SLMMACRU 0030 10 SLMMACSB 00E8 SLMMACSE 00EB SLMMACTB 0050 SLMMACUB 00EE SLMMACUE 00F1 SLMPM_ACTIVE 0079 SLMPM_LANNAME 00B8 SLMPM_LANOWNER 00B0 SLMPM_NEWTOD 00C8 SLMPM_OLDTOD 00C0 SLMPMCTR 0070 SLMPMFRQ 0074 SLMPXCTR 0020 SLMPXLIM 0030 80 SLMPXMAX 0028 SLMSETIP 00E0 SLMSWICT 008C SLMSWIPT 0088 SLMSWLCK 0090 SLMSYSAC 0031 80 SLMTODMAX 00D0 SLMTXCTR 0024 SLMTXLIM 0030 40 SLMTXMAX 002C SLMUSRAC 0031 40
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