linux-kernel - Re: [PATCH net-next] io_uring/zcrx: fix ifq->if_rxq is -1, get dma

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Message-ID: <CAHS8izOCc9-MydM6xDO8SsVs1bAZWuKcCWSJv_t0AsJznGnipA@mail.gmail.com>
Date: Fri, 12 Sep 2025 11:30:11 -0700
From: Mina Almasry <almasrymina@...gle.com>
To: Jakub Kicinski <kuba@...nel.org>
Cc: Pavel Begunkov <asml.silence@...il.com>, Feng zhou <zhoufeng.zf@...edance.com>, axboe@...nel.dk, 
	dtatulea@...dia.com, io-uring@...r.kernel.org, linux-kernel@...r.kernel.org, 
	yangzhenze@...edance.com, wangdongdong.6@...edance.com
Subject: Re: [PATCH net-next] io_uring/zcrx: fix ifq->if_rxq is -1, get
 dma_dev is NULL

On Fri, Sep 12, 2025 at 7:22 AM Jakub Kicinski <kuba@...nel.org> wrote:
>
> On Fri, 12 Sep 2025 13:40:06 +0100 Pavel Begunkov wrote:
> > On 9/12/25 09:39, Feng zhou wrote:
> > > From: Feng Zhou <zhoufeng.zf@...edance.com>
> > >
> > > ifq->if_rxq has not been assigned, is -1, the correct value is
> > > in reg.if_rxq.
> >
> > Good catch. Note that the blamed patch was merged via the net tree
> > this time around to avoid conflicts, and the io_uring tree doesn't
> > have it yet. You can repost it adding netdev@...r.kernel.org and
> > the net maintainers to be merged via the net tree. Otherwise it'll
> > have to wait until 6.18-rc1 is out
>
> If only we had a maintainers entry that makes people automatically
> CC both lists, eh? :\

FWIW that was the intention behind this patch I sent:

https://lore.kernel.org/netdev/20250821025620.552728-1-almasrymina@google.com/

I didn't get any feedback on it; I assumed people are not interested
(enough). Let me know if you want me to press the issue and send a
non-RFC version.

Although that one made sure that the changes are sent to net, only. I
guess I could add the io_uring list to the L entries.


--
Thanks,
Mina