[openib-general] ethtool support for ipoib

[Roland Dreier]

    Shirley> I read the discussion in net-dev. Since IB packet has its
    Shirley> own CRC (ICRC, VCRC). Is it a good idea to enable
    Shirley> checksum unnecessary in a pure IB Fabrics for large MTU
    Shirley> 64K. It requires some negotiation. Does your prototype
    Shirley> implementation for large MTU requires both ends
    Shirley> agreement?

No, it's never a good idea to turn off TCP or IP checksums.  That
leads to possibilities of silent data corruption too easily.