netdev - Re: [PATCH net-next 07/20] net, ethtool: Disallow mapped real rxqs to be resized

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Message-ID: <20250922183449.40abf449@kernel.org>
Date: Mon, 22 Sep 2025 18:34:49 -0700
From: Jakub Kicinski <kuba@...nel.org>
To: Daniel Borkmann <daniel@...earbox.net>
Cc: netdev@...r.kernel.org, bpf@...r.kernel.org, davem@...emloft.net,
 razor@...ckwall.org, pabeni@...hat.com, willemb@...gle.com,
 sdf@...ichev.me, john.fastabend@...il.com, martin.lau@...nel.org,
 jordan@...fe.io, maciej.fijalkowski@...el.com, magnus.karlsson@...el.com,
 David Wei <dw@...idwei.uk>
Subject: Re: [PATCH net-next 07/20] net, ethtool: Disallow mapped real rxqs
 to be resized

On Fri, 19 Sep 2025 23:31:40 +0200 Daniel Borkmann wrote:
> Similar to AF_XDP, do not allow queues in a physical netdev to be
> resized by ethtool -L when they are peered.

I think we need the same thing for the ioctl path.
Let's factor the checks out to a helper in net/ethtool/common.c ?