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IV64473: ETHERNET PORT FAILS TO RECEIVE PACKETS FOLLOWING A SEA FAILOVER APPLIES TO AIX 6100-08

A fix is available

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APAR status

  • Closed as program error.

Error description

  • This affects only specific Power8 ethernet adapters:
    PCIe2 2-Port 10GbE Base-T Adapter.
    PCIe2 4-Port (10GbE SFP+ & 1GbE RJ45) Adapter
    .
    When the adapter is in promiscuous mode and an
    adapter reset occurs, network packets will no longer
    be received, though transmits can still work.
    .
    This has been primarily seen on VIOS systems using
    SEA (Shared Ethernet Adapter) on top of this adapter.
    .
    When SEA failover happens and the SEA transitions
    from Primary to Backup, it performs an adapter reset
    on the physical adapter.
    This can cause the physical adapter to stop receiving
    packets, which will effectively disconnect the VIOS and
    all VIO client LPARs from the external network.
    

Local fix

  • This can be safely avoided by changing the SEA
    behavior to not issue the adapter reset on failover:
    > chdev -l <sea device> -a adapter_reset=no
    This will not affect SEA failover functionality as long
    as the default backup RARP method is enabled:
    > chdev -l <sea device> -a send_RARP=yes
    This can be safely avoided by changing the SEA
    behavior to not issue the adapter reset on failover:
    > chdev -l <sea device> -a adapter_reset=no
    This will not affect SEA failover functionality as long
    as the default backup RARP method is enabled:
    > chdev -l <sea device> -a send_RARP=yes
    Set adapter_reset attribute of SEA to "no" to avoid
    the port being reset by SEA.
    

Problem summary

  • Configuring adapter(FC#EN0S and FC#EN0W) as a SEA for a VIOS
    and with ctrl_chan attribute.adapter stops working, ping fails
    

Problem conclusion

  • Changes were made to the adapter driver to work normally
    after an adapter reset is issued.
    

Temporary fix

Comments

  • 6100-08 - use AIX APAR IV64473
    6100-09 - use AIX APAR IV63449
    7100-02 - use AIX APAR IV64292
    7100-03 - use AIX APAR IV63680
    

APAR Information

  • APAR number

    IV64473

  • Reported component name

    AIX 610 STD EDI

  • Reported component ID

    5765G6200

  • Reported release

    610

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Submitted date

    2014-09-02

  • Closed date

    2014-09-02

  • Last modified date

    2015-01-21

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

    IV63449

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

    IV65041

Fix information

  • Fixed component name

    AIX 610 STD EDI

  • Fixed component ID

    5765G6200

Applicable component levels

  • R610 PSY U867327

       UP15/01/18 I 1000

PTF to Fileset Mapping



Document information

More support for: AIX Standard Edition

Software version: 610

Operating system(s): AIX

Reference #: IV64473

Modified date: 21 January 2015