Re: [PATCH net-next v2 1/2] netdev: expose io_uring rx_page_order order via netlink

[Jakub Kicinski <kuba@kernel.org>]

On Mon, 15 Jun 2026 12:16:47 +0100 Pavel Begunkov wrote:
> On 6/14/26 01:02, Jakub Kicinski wrote:
> > On Sat, 13 Jun 2026 16:09:03 +0200 Dragos Tatulea wrote:  
> >> In io_pp_nl_fill() or in page_pool_nl_fill() as it was done in v1 for order?  
> > 
> > It's fine. We decided to make the "page size" a memory provider
> > property, now we're going back to making it a queue level param?
> > Like my RFC had that everyone hated so much? Sigh.  
> 
> TBH, I never cared much how nl would show it, so not opposing either
> version. My idea is that even without plumbing in per-queue non-mp size
> configuration, it'd be nice to have a common way to check it b/w
> providers.
> 
>  From the semantics and observability perspective, zcrx is probably not
> that interesting as the parameter is basically just a hint with no affect
> on uapi, and I'd assume people would rather see the page pool size or even
> the NIC's page size. But I guess it depends on what Dragos is really after
> with this patch.

Not sure what Dragos's use case is but IMO it's useful as system admin
/ vendor to be able to peek at the important params when user reports
bad perf. The netlink MP info is meant for system observability.