netdev - Re: [PATCH net-next 0/4] Remove RTNL lock protection of CVQ

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Date: Tue, 26 Mar 2024 09:33:23 +0800
From: Xuan Zhuo <xuanzhuo@...ux.alibaba.com>
To: Daniel Jurgens <danielj@...dia.com>
Cc: <mst@...hat.com>,
 <jasowang@...hat.com>,
 <xuanzhuo@...ux.alibaba.com>,
 <virtualization@...ts.linux.dev>,
 <davem@...emloft.net>,
 <edumazet@...gle.com>,
 <kuba@...nel.org>,
 <pabeni@...hat.com>,
 <jiri@...dia.com>,
 Daniel Jurgens <danielj@...dia.com>,
 <netdev@...r.kernel.org>
Subject: Re: [PATCH net-next 0/4] Remove RTNL lock protection of CVQ

For series:

Reviewed-by: Xuan Zhuo <xuanzhuo@...ux.alibaba.com>

On Mon, 25 Mar 2024 16:49:07 -0500, Daniel Jurgens <danielj@...dia.com> wrote:
> Currently the buffer used for control VQ commands is protected by the
> RTNL lock. Previously this wasn't a major concern because the control
> VQ was only used during device setup and user interaction. With the
> recent addition of dynamic interrupt moderation the control VQ may be
> used frequently during normal operation.
>
> This series removes the RNTL lock dependancy by introducing a spin lock
> to protect the control buffer and writing SGs to the control VQ.
>
> Daniel Jurgens (4):
>   virtio_net: Store RSS setting in virtnet_info
>   virtio_net: Remove command data from control_buf
>   virtio_net: Add a lock for the command VQ.
>   virtio_net: Remove rtnl lock protection of command buffers
>
>  drivers/net/virtio_net.c | 185 ++++++++++++++++++++++-----------------
>  1 file changed, 104 insertions(+), 81 deletions(-)
>
> --
> 2.42.0
>