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Subject: Re: Intel 82574L (em)
From: "K. Macy" <kmacy@freebsd.org>
To: Sean Bruno <sbruno@freebsd.org>
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Cc: Sepherosa Ziehau <sepherosa@gmail.com>,
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>
> 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