From: Stuart Henderson <stu@spacehopper.org>
Subject: Re: cache route at pf state
To: Alexander Bluhm <bluhm@openbsd.org>
Cc: tech@openbsd.org
Date: Sat, 20 Jul 2024 18:35:24 +0100

On 2024/07/20 19:20, Alexander Bluhm wrote:
> Hi,
> 
> When forwarding packets, rtable_match takes quite some time.
> 
> http://bluhm.genua.de/perform/results/2024-07-19T07:25:47Z/2024-07-19T00%3A00%3A00Z/btrace/ssh_perform%40lt13_iperf3_-6_-cfdd7%3Ae83e%3A66bc%3A0346%3A%3A36_-P10_-t10-btrace-kstack.0.svg?s=rtable_match
> 
> This can be avoided by caching the route at the pf state.

Is there some way to invalidate the cache if the route changes while the
state is active?