[PATCH v1 20/21] net/virtio-user: advertize control VQ support with vDPA

[Xia, Chenbo]

> -----Original Message-----
> From: Maxime Coquelin <maxime.coquelin at redhat.com>
> Sent: Wednesday, November 30, 2022 11:57 PM
> To: dev at dpdk.org; Xia, Chenbo <chenbo.xia at intel.com>;
> david.marchand at redhat.com; eperezma at redhat.com
> Cc: Maxime Coquelin <maxime.coquelin at redhat.com>
> Subject: [PATCH v1 20/21] net/virtio-user: advertize control VQ support
> with vDPA
> 
> This patch advertizes control virtqueue support by the vDPA
> backend if it supports VIRTIO_NET_F_CTRL_VQ.
> 
> Signed-off-by: Maxime Coquelin <maxime.coquelin at redhat.com>
> ---
>  drivers/net/virtio/virtio_user/vhost_vdpa.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/net/virtio/virtio_user/vhost_vdpa.c
> b/drivers/net/virtio/virtio_user/vhost_vdpa.c
> index 3fd13d9fac..7bb4995893 100644
> --- a/drivers/net/virtio/virtio_user/vhost_vdpa.c
> +++ b/drivers/net/virtio/virtio_user/vhost_vdpa.c
> @@ -135,8 +135,8 @@ vhost_vdpa_get_features(struct virtio_user_dev *dev,
> uint64_t *features)
>  		return -1;
>  	}
> 
> -	/* Multiqueue not supported for now */
> -	*features &= ~(1ULL << VIRTIO_NET_F_MQ);
> +	if (*features & 1ULL << VIRTIO_NET_F_CTRL_VQ)
> +		dev->hw_cvq = true;
> 
>  	/* Negotiated vDPA backend features */
>  	ret = vhost_vdpa_get_protocol_features(dev, &data-
> >protocol_features);
> --
> 2.38.1

Reviewed-by: Chenbo Xia <chenbo.xia at intel.com>