PI87535: ADD MISSING ++HOLD FOR PI86950. 17/09/19 PTF PECHANGE

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• The error described in PI86950 requires the fixing PTF to be
  applied to all z/OS Communication Server TCP/IP stacks that use
  the QDIO accelerator function (QDIOACCELERATOR parameter on the
  IPCONFIG statement in the TCPIP profile) to forward packets to
  an OSA-Express6S (available starting with z14). The addition of
  a ++HOLD to describe this required action was not provided.
  This APAR is solely for the purpose of providing the ++HOLD and
  does not provide any new functional code.
  .
  The error described in PI86950 is that the QDIO accelerator
  function forwards packets without adjusting Ethernet frame
  padding. If QDIO accelerator adds content to the Ethernet
  payload that is then forwarded to an OSA-Express6S (available
  starting with z14), the OSA-Express6S will detect  a length
  error and mark the read operation as invalid. Repeated read
  errors may result in INOPs with IST1578I  DEVICE INOP DETECTED
  FOR xxxxxxxx BY ISTLLCIE CODE = 001. Potential discarded packets
  can impact performance.
  .
  The most likely scenarios where content is added to the Ethernet
  payload are GRE encapsulation due to VIPAROUTE or VLAN tagging.
  
  R3906/K
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED:                                              *
  * All users of the IBM Communications Server for z/OS Version  *
  * 2 Releases 1, 2, and 3 IP: QDIO accelerator                  *
  ****************************************************************
  * PROBLEM DESCRIPTION:                                         *
  * The error described in PI86950 requires the fixing PTF to be *
  * applied to all z/OS Communication Server TCP/IP stacks that  *
  * use the QDIO accelerator function (QDIOACCELERATOR parameter *
  * on the IPCONFIG statement in the TCPIP profile) to forward   *
  * packets to an OSA-Express6S (available starting with z14).   *
  * The addition of a ++HOLD to describe this required action    *
  * was not provided.  This APAR is solely for the purpose of    *
  * providing the ++HOLD and does not provide any new functional *
  * code.                                                        *
  ****************************************************************
  * RECOMMENDATION:                                              *
  * Apply the PTF                                                *
  ****************************************************************
  The error described in PI86950 requires the fixing PTF to be
  applied to all z/OS Communication Server TCP/IP stacks that use
  the QDIO accelerator function (QDIOACCELERATOR parameter on the
  IPCONFIG statement in the TCPIP profile) to forward packets to
  an OSA-Express6S (available starting with z14). The addition of
  a ++HOLD to describe this required action was not provided.
  This APAR is solely for the purpose of providing the ++HOLD and
  does not provide any new functional code.
  .
  The error described in PI86950 is that the QDIO accelerator
  function forwards packets without adjusting Ethernet frame
  padding. If QDIO accelerator adds content to the Ethernet
  payload that is then forwarded to an OSA-Express6S (available
  starting with z14), the OSA-Express6S will detect  a length
  error and mark the read operation as invalid. Repeated read
  errors may result in INOPs with IST1578I  DEVICE INOP DETECTED
  FOR xxxxxxxx BY ISTLLCIE CODE = 001. Potential discarded packets
  can impact performance.
  .
  The most likely scenarios where content is added to the Ethernet
  payload are GRE encapsulation due to VIPAROUTE or VLAN tagging.
  

Problem conclusion

• The applicable PTFs for this APAR include the following
  information in a ++HOLD for action.
  The applicable PTF for this APAR must be applied to all z/OS
  Communication Server TCP/IP stacks that use the QDIO accelerator
  function (QDIOACCELERATOR parameter on the IPCONFIG statement in
  the TCPIP profile) to forward packets to an OSA-Express6S
  (available starting with z14).
  

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:

  UI50501 UI50502 UI50503

Modules/Macros

• EZBIFQDR
  

Fix information

• Fixed component name

  TCP/IP MVS

• Fixed component ID

  5655HAL00

Applicable component levels

• R220 PSY UI50502

     UP17/09/26 P F709 {

• R210 PSY UI50501

     UP17/09/26 P F709 {

• R230 PSY UI50503

     UP17/09/26 P F709 {

Fix is available

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