iflib and options RSS is a no go for igbX

Andriy Gapon avg at FreeBSD.org
Tue May 26 15:39:42 UTC 2020


On 26/05/2020 12:03, Hans Petter Selasky wrote:
> Hi,
> 
> I just found a bug where outgoing TCP connections over igb0 doesn't work because
> likely the software computed hash is wrong, so the incoming packets get dropped
> because they are received on the wrong queue.
> 
> It is the management port, so I'm just using this hack for now:
> 
> dev.igb.0.iflib.override_nrxqs=1
> dev.igb.0.iflib.override_ntxqs=1

This is a very common problem in our drivers.
E.g., https://reviews.freebsd.org/D24733


-- 
Andriy Gapon


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