[dpdk-users] Subnet filters in hardware
Matthew Hall
mhall at mhcomputing.net
Tue Oct 4 23:35:08 CEST 2016
On Mon, Oct 03, 2016 at 10:46:07PM -0400, Cody Doucette wrote:
> I'm interested in applying a hardware filter for entire subnets instead of
> individual flows. I've seen previous threads stating that ntuple filter in
> theory may be able to support this, but currently there's not any hardware
> support for it. For example, the 82599 only allows you to set an entire
> field to be matched, but not apply a prefix mask.
>
> Is anyone aware of any new NICs (last 1-2 years) where this is possible? It
> would be a very useful feature and I'm having a hard time finding anything
> suitable.
>
> Thanks in advance!
> Cody
It is already possible to achieve line rate subnet matching performance using
a proper configuration of rte_lpm so this might not really be required. Can
you try that first?
Matthew.
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