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

Sean Bruno sbruno at freebsd.org
Tue Jan 10 03:31:45 UTC 2017

tl;dir --> you get to keep your igbX devices(thanks jhb), no POLA
violations this week.

I've updated sys/dev/e1000 at svn R311849 to match Matt Macy's work on
IFLIB in the kernel.

At this point, the driver deviates from Intel's code dramatically and
you now get to yell directly into the freebsd-net@ megaphone for things
that I may have broken.

man page updates are coming up next.  Please let us know if this
revision has made things better, worse or none-of-the above on whatever
Intel Gigabit NIC you happen to have lying around.


On 01/05/17 20:17, Sean Bruno wrote:
> tl;dr --> igbX devices will become emX devices
> We're about to commit an update to sys/dev/e1000 that will implement and
> activate IFLIB for em(4), lem(4) & igb(4) and would appreciate all folks
> who can test and poke at the drivers to do so this week.  This will have
> some really great changes for performance and standardization that have
> been bouncing around inside of various FreeBSD shops that have been
> collaborating with Matt Macy over the last year.
> This will implement multiple queues for certain em(4) devices that are
> capable of such things and add some new sysctl's for you to poke at in
> your monitoring tools.
> Due to limitations of device registration, igbX devices will become emX
> devices.  So, you'll need to make a minor update to your rc.conf and
> scripts that manipulate the network devices.
> UPDATING will be bumped to reflect these changes.
> MFC to stable/11 will have a legacy implementation that doesn't use
> IFLIB for compatibility reasons.
> A documentation and man page update will follow in the next few days
> explaining how to work with the changed driver.
> sean
> bcc net@ current@ re@

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