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MF66005 - LIC-COMM-SRCB025A6F7 Ethernet adapter CCIN 576F transmit han

PTF ( Program Temporary Fixes ) Cover letter


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Abstract

LIC-COMM-SRCB025A6F7 Ethernet adapter CCIN 576F transmit han


Pre/Co-Requisite PTF / Fix List

REQ  LICENSED           PTF/FIX  LEVEL

TYPE PROGRAM  RELEASE   NUMBER   MIN/MAX  OPTION
---- -------- --------- -------  -------  ------
TR   5770999  V7R3M0    MF99206   00/00    0000



NOTICE:
-------
Application of this PTF may disable or render ineffective programs that
use system memory addresses not generated by the IBM translator,
including programs that circumvent control technology designed to limit
interactive capacity to purchased levels.  This PTF may be a prerequisite
for future PTFs.  By applying this PTF you authorize and agree to the
foregoing.

This PTF is subject to the terms of the 'IBM License Agreement for Machine
Code', the terms of which were provided in a printed document that was
delivered with the machine.

SUBJECT TO ANY WARRANTIES WHICH CAN NOT BE EXCLUDED OR EXCEPT AS EXPLICITLY
AGREED TO IN THE APPLICABLE LICENSE AGREEMENT OR AN APPLICABLE SUPPORT
AGREEMENT, IBM MAKES NO WARRANTIES OR CONDITIONS EITHER EXPRESS OR IMPLIED,
INCLUDING BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OR CONDITIONS OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND NON INFRINGEMENT,
REGARDING THE PTF.


APAR Error Description / Circumvention

-------------------------------------------------
For Ethernet adapters with CCIN 576F, a SRCB025A6F7 is generated
and Ethernet communications appears to stop.

CORRECTION FOR APAR 'MA47635' :
-------------------------------
This problem appears to only be occurring on Power 9 systems and
Ethernet adapters with CCIN 576F.  The cause of the Ethernet
communication problem is due to a missing memory barrier
instruction in the 576F device driver.  This can cause
out-of-order PCIe MMIO writes to the adapter resulting in the
adapter getting into a state where it is no longer able to
transmit.  The only recovery from this is to vary off/on the CMN
resource.  This PTF fixes the device driver.

CIRCUMVENTION FOR APAR 'MA47635' :
----------------------------------
None.


Activation Instructions

None.




Special Instructions

None.


Default Instructions

THIS IS A DELAYED PTF TO BE APPLIED AT IPL TIME.



Supersedes

PTF/FIX NO(S).  APAR TITLE LINE
--------------  ------------------------------------------------------------
     NONE

Summary Information

System.............................. i
Models..............................
Release............................. V7R3M0
Licensed Program............... 5770999
APAR Fixed.......................... View details for APAR MA47635
Superseded by:...................... View fix details for PTF MF99207
Recompile........................... N
Library............................. QSYS
MRI Feature ........................ NONE
Cum Level........................... C9311730


IBM i Support

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Document information

More support for: i family

Software version: V7R3M0

Operating system(s): OS/400

Reference #: MF66005

Modified date: 20 May 2019