HEADS-UP: IFLIB implementations of sys/dev/e1000 em, lem, igb pending

[Sean Bruno]

> 
> Thank you very much for your work!
> I'm unsure if I got it right: stabe/11 won't benefit from IFLIB (not
> that I know waht IFLIB is all about, yet), but driver changes will be
> merged?

Yes, we intend on pulling back IFLIB and the IFLIB'd drivers to
stable/11 for people's use.  The difference will be that the IFLIB
implementation will not be the default here, it will be a KERNCONF
option that you will be able to add during your upgrade process.

> 
> I'm already using MULTIQUEUE support for em(4) (Hartwell, 82547) since
> 10.2-stable without problems on high saturated single links and
> noticable better performance.
> 
> Currently I could test a pre-productive igb(4)/Kawela (82576) machine
> utilizing LACP+VLANs to chekck for regression (improvement regarding
> »igb stopped distributiong, possible flapping?«), but it's stable/11.
> 
> Simply merging r311849 doesn't work, most likely due to the IFLIB
> compatibility reasons you mentioned.
> Have you already prepared a MFC verison?
> What should igb(4) users expect after MFC? (Christmas is over and I
> didn't get SR-IOV for igb(4)/82576, so this its still on my wish list ;-))
> 
> Thnaks,
> 
> -harry

I suspect end of month for an MFC with all the IFLIB bits.

sean

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