K 10
svn:author
V 3
jfv
K 8
svn:date
V 27
2012-10-31T23:50:36.137489Z
K 7
svn:log
V 1444
A few important fixes:
  - Testing TSO6 has led me to discover that HW RSC is
    a problematic feature, it is ONLY designed to work
    with IPv4 in the first place, and if IP forwarding
    is done it can't be disabled as LRO in the stack,
    also initial testing we've done at Intel shows an
    equal performance using TSO[46] on the TX and LRO
    on RX, if you ran older code on 82599 or later hardware
    you actually could have detrimental performance for
    this reason. So I am disabling the feature by default
    and all our adapters will now use LRO instead.

  - If you have flow control off and multiple queues it
    was possible when the buffer of one queue becomes
    full that all RX movement is stalled, to eliminate
    this problem a feature bit is now set that will allow
    packets to be dropped when full rather than stall.
    Note, the default is to have flow control on, and this
    keeps this from happening.

  - Because of the recent fixes in the stack, LRO is now
    auto-disabled when problematic, so I have decided to
    enable it by default in the capabilities in the driver.

  - There are some 1G modules used by some customers, a couple
    small tweaks to properly support those in the media code.

  - A note: we have now done some testing of TSO6 and using
    LRO with IPv6 and it all works great!! Seeing line rate
    in both directions in best cases. Thanks bz for your
    excellent work!!

END