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IV61928: 10G ROCE ADAPTER IN SEA DROPPED LARGESEND PACKETS APPLIES TO AIX 6100-08

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You can track all active APARs for this component.

 

APAR status

  • Closed as program error.

Error description

  • Using a RoCE adapter (10GbE PCIe2 CX2 Network Adapter
    (b315506714106104))as real adapter in a SEA with the
    largesend option enabled will lead to poor throughput,
    because the adapter will drop all largesend packets.
    

Local fix

  • disable largesend on the SEA adapter
    

Problem summary

  • Using a RoCE adapter (10GbE PCIe2 CX2 Network Adapter
    (b315506714106104))as real adapter in a SEA with the
    largesend option enabled will lead to poor throughput,
    because the adapter will drop all largesend packets.
    

Problem conclusion

  • 10G RoCE adapter device driver is fixed to enable device bits
    needed for LSO operations.
    

Temporary fix

Comments

  • 6100-08 - use AIX APAR IV61928
    6100-09 - use AIX APAR IV62643
    7100-02 - use AIX APAR IV64280
    7100-03 - use AIX APAR IV62742
    

APAR Information

  • APAR number

    IV61928

  • Reported component name

    VIRTUAL I/O SER

  • Reported component ID

    5765G3400

  • Reported release

    220

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Submitted date

    2014-06-25

  • Closed date

    2014-07-16

  • Last modified date

    2016-05-11

Fix information

  • Fixed component name

    VIRTUAL I/O SER

  • Fixed component ID

    5765G3400

Applicable component levels

  • R220 PSY

       UP

PTF to Fileset Mapping

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Document Information

Modified date:
21 February 2022