* [dpdk-users] Subnet filters in hardware
@ 2016-10-04 2:46 Cody Doucette
2016-10-04 21:35 ` Matthew Hall
0 siblings, 1 reply; 2+ messages in thread
From: Cody Doucette @ 2016-10-04 2:46 UTC (permalink / raw)
To: users
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
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: [dpdk-users] Subnet filters in hardware
2016-10-04 2:46 [dpdk-users] Subnet filters in hardware Cody Doucette
@ 2016-10-04 21:35 ` Matthew Hall
0 siblings, 0 replies; 2+ messages in thread
From: Matthew Hall @ 2016-10-04 21:35 UTC (permalink / raw)
To: Cody Doucette; +Cc: users
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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