netdev - Re: [PATCH RFC v3 3/8] vhost-net: allow configuring extended features

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Message-ID: <CACGkMEshBCkMWFwa8-_FBGVaemzpgZHxpm5_w-YjK0P1pXgAGA@mail.gmail.com>
Date: Thu, 12 Jun 2025 09:31:41 +0800
From: Jason Wang <jasowang@...hat.com>
To: Paolo Abeni <pabeni@...hat.com>
Cc: netdev@...r.kernel.org, Willem de Bruijn <willemdebruijn.kernel@...il.com>, 
	Andrew Lunn <andrew+netdev@...n.ch>, "David S. Miller" <davem@...emloft.net>, 
	Eric Dumazet <edumazet@...gle.com>, Jakub Kicinski <kuba@...nel.org>, 
	"Michael S. Tsirkin" <mst@...hat.com>, Xuan Zhuo <xuanzhuo@...ux.alibaba.com>, 
	Eugenio Pérez <eperezma@...hat.com>, 
	Yuri Benditovich <yuri.benditovich@...nix.com>, Akihiko Odaki <akihiko.odaki@...nix.com>
Subject: Re: [PATCH RFC v3 3/8] vhost-net: allow configuring extended features

On Fri, Jun 6, 2025 at 7:46 PM Paolo Abeni <pabeni@...hat.com> wrote:
>
> Use the extended feature type for 'acked_features' and implement
> two new ioctls operation allowing the user-space to set/query an
> unbounded amount of features.
>
> The actual number of processed features is limited by VIRTIO_FEATURES_MAX
> and attempts to set features above such limit fail with
> EOPNOTSUPP.
>
> Note that: the legacy ioctls implicitly truncate the negotiated
> features to the lower 64 bits range and the 'acked_backend_features'
> field don't need conversion, as the only negotiated feature there
> is in the low 64 bit range.
>
> Signed-off-by: Paolo Abeni <pabeni@...hat.com>
> ---

Acked-by: Jason Wang <jasowang@...hat.com>

Thanks