linux-kernel - Re: [PATCH net-next v9 1/8] netmem: introduce struct netmem

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Message-ID: <20250714042346.GA68818@system.software.com>
Date: Mon, 14 Jul 2025 13:23:46 +0900
From: Byungchul Park <byungchul@...com>
To: Pavel Begunkov <asml.silence@...il.com>
Cc: willy@...radead.org, netdev@...r.kernel.org,
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Subject: Re: [PATCH net-next v9 1/8] netmem: introduce struct netmem_desc
 mirroring struct page

On Sat, Jul 12, 2025 at 03:39:59PM +0100, Pavel Begunkov wrote:
> On 7/10/25 09:28, Byungchul Park wrote:
> > To simplify struct page, the page pool members of struct page should be
> > moved to other, allowing these members to be removed from struct page.
> > 
> > Introduce a network memory descriptor to store the members, struct
> > netmem_desc, and make it union'ed with the existing fields in struct
> > net_iov, allowing to organize the fields of struct net_iov.
> 
> FWIW, regardless of memdesc business, I think it'd be great to have
> this patch, as it'll help with some of the netmem casting ugliness and
> shed some cycles as well. For example, we have a bunch of
> niov -> netmem -> niov casts in various places.

If Jakub agrees with this, I will re-post this as a separate patch so
that works that require this base can go ahead.

	Byungchul
> 
> --
> Pavel Begunkov