Intel 82574L (em)

[K. Macy]

>
> I'm interested in doing this a bit as I now have 5 em(4) interfaces on
> my soon to be router box.
>
> I tried modifying the driver to allow num_queues to be raised and I
> compiled with EM_MULTIQUEUE set, and all I got for my trouble was
> kernel panics.
>
> I'm not sure if the code even works.
>

IIRC that was really just enabling buf_ring usage. In any event I
don't think it's been maintained in upwards of 7 years.

-K