Re: [PATCH bpf-next 0/9] bpf: cpumap: enable GRO for XDP_PASS frames

From: Jesper Dangaard Brouer
Date: Thu Sep 05 2024 - 07:53:32 EST




On 03/09/2024 23.33, Lorenzo Bianconi wrote:
On Fri, 30 Aug 2024 18:24:59 +0200 Alexander Lobakin wrote:
* patch 4: switch cpumap from a custom kthread to a CPU-pinned
threaded NAPI;

Could you try to use the backlog NAPI? Allocating a fake netdev and
using NAPI as a threading abstraction feels like an abuse. Maybe try
to factor out the necessary bits? What we want is using the per-cpu
caches, and feeding GRO. None of the IRQ related NAPI functionality
fits in here.

I was thinking allocating a fake netdev to use NAPI APIs is quite a common
approach, but sure, I will looking into it.


I have a use-case for cpumap where I adjust (increase) kthread priority.

Using backlog NAPI, will I still be able to change scheduling priority?

--Jesper