OA47309: SHARED MEMORY COMMUNICATIONS OVER RDMA DEVELOPMENT FIXES

Obtain the fix for this APAR.

APAR status

• Closed as unreproducible in next release.

Error description

• SMC-R development fixes.
  D/T2827 E2964/K
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED:                                              *
  * All users of the IBM Communications Server                   *
  * z/OS Version 2 Release 1                                     *
  * Shared Memory Communications over RDMA (SMC-R) function.     *
  ****************************************************************
  * PROBLEM DESCRIPTION:                                         *
  * Various development fixes associated with the SMC-R          *
  * function.                                                    *
  ****************************************************************
  * RECOMMENDATION:                                              *
  * Apply PTF.                                                   *
  ****************************************************************
  This APAR includes the following fixes:
  33074 - Vtam problems during dynamic change of PNETIDS
  31897 - IUTSTAFD code 081052F6 on CM_SETUP_CNF when trying to
  establish an SMCR link
  33402 - AB/S00C4 ISTSRIFB +1FA ISTAPCMT VTAM ABEND IN MEMORY
  TERMINATION
  33458 - ISTAPCMT - VTAM ABEND IN MEMORY TERMINATION  (0c4 0038)
  ISTLLCFB+0x31E ASCE Type exception.
  33494 - EZZ4338I CODE 08105014 then ISTSRIWC InOpCode 002
  29899 - IST2406I  SMC-R LINK FAILURE ON TRLE IUT100E8 CODE =
  081052F7  
  33878 -  IST2419I VIRTUAL INTERRUPT DRIVEN FOR TRLE IUT10060
  32898 - New function to detect when an 10GbE RoCE Express
  feature is unresponsive to QP activation attempts.
  34008 - New function to allow message IST2419I to be accepted on
  the Modify CSDUMP command when RNICTRLE=MSGVALUE is specified.
  34269 - Various SMC-R link timeouts due to missing interrupt on
  RoCE device.
  34229 - AB/S00C4 0010 ISTSRIFB +1E4 ISTAPCMT after Z NET CANCEL
  34456 - V2R1 AB/S00C4 0004 ISTLLCWT +F8
  

Problem conclusion

• The following changes have been made for each of the following
  fixes:
  33074 - ISTSRRCQ - Fixed the inifinite CC2 loop issue trying to
  arm the CQ.  The problem was that PCIe_Done bit was not turned
  on after a successful PCIEDataStore.
  31897 - Expand the ISTROCNS fields used for the CQ calculations
  to Fixed(32) values.
  33402 - Defined a new bit, PSTABEND_Save.  This bit will be set
  on in ISTAPCKU (for VTAM memterm case) to save the PSTABEND
  value prior to turning on PSTABEND bit.   Module ISTSRIWT will
  now chek PSTABEND_Save is off prior to calling ISTSRIFB for this
  RUNCB.  This should allow us to correctly skip CSM cleanup for
  this RUNCB when TCP memterm has already cleaned up the CSM
  storage.
  33458 - ISTLLCWT - Added check for PSTABEND_Save bit being on
  prior to calling ISTLLCFB for VTAM memterm scenario  Note: For
  this chedk we must look at the DYPTSKID within the NCB_DYPAB
  (DINCB), as the NCBTSKID (is VTAM's PST).
  33494 - For the ISTSRIWC INOP 002 INOPDUMP, z/OS CS transitioned
  the QPs immediately to reset state, bypassing the error state.
  For this scenario, the stack is still up and running, so all
  WQEs must be flushed and sent to the stack (for failover
  processing).  QPs may transition directly to reset state when a
  stack is terminating as failover processing does not occur for
  this case.
  29899/33878 - Added Adapter Interrupt Monitoring function.
  New function introduces start option AIMON=ROCE.  VTAM may also
  issue IST2419I message group when the adapter interrupt
  monitoring function is enabled. This message group indicates
  VTAM detected that no interrupt had been generated for the
  interface associated with trlename even though there was data
  waiting to be processed, and that VTAM then initiated a virtual
  interrupt to resume activity on the interface. The adapter
  interrupt monitoring function is enabled using the AIMON start
  option.
  
  A complete description of the message group follows the example:
  IST2419I VIRTUAL INTERRUPT DRIVEN FOR TRLE trlename
  IST2361I SMCR PFID = pfid PCHID = pchid PNETID = network_id
  IST314I END
  32898 - The SMC-R components detected that repeated attempts to
  activate a QP as part of SMC-R establishment failed to complete
  within an acceptable period.  INOP processing is triggered for
  the 10GbE RoCE Express interface.  The INOP condition is
  reported with new DLC status code of x'08105019'.
  34008 - The Modify CSDUMP command will now allow message
  IST2419I be issued on the MESSAGE parameter when
  RNICTRLE=MSGVALUE is specified.  This will allow automation to
  dynamically capture a hardware dump when message IST2419I is
  issued for a RoCE device.
  34269 - Traces reveal that z/OS CS is hitting a timing window
  where two threads of the DIE (ISTSRRIE) are running
  concurrently.  This exposes an issue where the last thread did
  not re-ARM the EQ correctly.
  34229 - The fix is just a small change to ISTSRIWT to also
  validate that the MPST is not in the process of being freed
  (MPSNFRED = OFF), prior to calling ISTSRIFB.  A similar changes
  has been made to ISTLLCWT.
  34456 - Linkage code has been corrected in module ISTLLCSB.
  ISTLLCSB can be called by the stack and also by ISTLLCWT.  But
  the savearea setup requirements differ for each call, but the
  code did not originally account for the differences.
  

Temporary fix

Comments

APAR Information

• APAR is sysrouted FROM one or more of the following:

• APAR is sysrouted TO one or more of the following:

  UA77027

Modules/Macros

• ISTSRRIE ISTSRRUT ISTSRRQP ISTSRROP ISTSRCAS ISTSRRMQ ISTSRRMR
  ISTSRRIN ISTTSCIA ISTSRRCL ISTVTMEU ISTINCNO ISTSRRCQ ISTTSCWU
  ISTSRRVI ISTSRIFB ISTSRRPD ISTSRRVL ISTSRIDD ISTSRIRS ISTSRIRU
  ISTSRIS8 ISTSRRDC ISTSRIWC ISTSRRRV ISTSRIDQ ISTSRIWD ISTSRIDR
  ISTMSFLD ISTSRIUF ISTCICS2 ISTSRIWI ISTMSFLI ISTAPCKU ISTCFCML
  ISTLLCWT ISTCFCMM ISTSRRDQ ISTSRIWT ISTTSCBF ISTNOCM9 ISTRACRR
  ISTTSCIC ISTRACOT ISTLLCSB
  

Fix information

• Fixed component name

  VTAM V4 MVS/ESA

• Fixed component ID

  569511701

Applicable component levels

• R210 PSY UA77027

     UP15/06/23 P F506 ¢

Fix is available

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