linux-kernel - Re: [PATCH] Do not name control queue for virtio-net

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Date:   Sun, 18 Sep 2022 02:56:41 -0400
From:   "Michael S. Tsirkin" <mst@...hat.com>
To:     junbo4242@...il.com
Cc:     Jason Wang <jasowang@...hat.com>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Alexei Starovoitov <ast@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>,
        Jesper Dangaard Brouer <hawk@...nel.org>,
        John Fastabend <john.fastabend@...il.com>,
        virtualization@...ts.linux-foundation.org, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org, bpf@...r.kernel.org
Subject: Re: [PATCH] Do not name control queue for virtio-net

On Sat, Sep 17, 2022 at 09:28:57AM +0000, junbo4242@...il.com wrote:
> From: Junbo <junbo4242@...il.com>
> 
> In virtio drivers, the control queue always named <virtioX>-config.
> 
> Signed-off-by: Junbo <junbo4242@...il.com>

I don't think that's right. config is the config interrupt.



> ---
>  drivers/net/virtio_net.c | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c
> index 9cce7dec7366..0b3e74cfe201 100644
> --- a/drivers/net/virtio_net.c
> +++ b/drivers/net/virtio_net.c
> @@ -3469,7 +3469,8 @@ static int virtnet_find_vqs(struct virtnet_info *vi)
>  	/* Parameters for control virtqueue, if any */
>  	if (vi->has_cvq) {
>  		callbacks[total_vqs - 1] = NULL;
> -		names[total_vqs - 1] = "control";
> +		/* control virtqueue always named <virtioX>-config */
> +		names[total_vqs - 1] = "";
>  	}
>  
>  	/* Allocate/initialize parameters for send/receive virtqueues */
> -- 
> 2.31.1