On Thu, Jan 4, 2024 at 4:39 PM Maxime Coquelin
<maxime.coquelin@xxxxxxxxxx> wrote:
>
> This patch adds Virtio-net device type to the supported
> devices types.
>
> Initialization fails if the device does not support
> VIRTIO_F_VERSION_1 feature, in order to guarantee the
> configuration space is read-only. It also fails with
> -EPERM if the CAP_NET_ADMIN is missing.
>
> Signed-off-by: Maxime Coquelin <maxime.coquelin@xxxxxxxxxx>
Reviewed-by: Eugenio Pérez <eperezma@xxxxxxxxxx>
> ---
> drivers/vdpa/vdpa_user/vduse_dev.c | 10 ++++++++++
> 1 file changed, 10 insertions(+)
>
> diff --git a/drivers/vdpa/vdpa_user/vduse_dev.c b/drivers/vdpa/vdpa_user/vduse_dev.c
> index 94f54ea2eb06..4057b34ff995 100644
> --- a/drivers/vdpa/vdpa_user/vduse_dev.c
> +++ b/drivers/vdpa/vdpa_user/vduse_dev.c
> @@ -151,6 +151,7 @@ static struct workqueue_struct *vduse_irq_bound_wq;
>
> static u32 allowed_device_id[] = {
> VIRTIO_ID_BLOCK,
> + VIRTIO_ID_NET,
> };
>
> static inline struct vduse_dev *vdpa_to_vduse(struct vdpa_device *vdpa)
> @@ -1694,6 +1695,10 @@ static bool features_is_valid(struct vduse_dev_config *config)
> (config->features & VDUSE_NET_INVALID_FEATURES_MASK))
> return false;
>
> + if ((config->device_id == VIRTIO_ID_NET) &&
> + !(config->features & (1ULL << VIRTIO_F_VERSION_1)))
> + return false;
> +
> return true;
> }
>
> @@ -1801,6 +1806,10 @@ static int vduse_create_dev(struct vduse_dev_config *config,
> int ret;
> struct vduse_dev *dev;
>
> + ret = -EPERM;
> + if ((config->device_id == VIRTIO_ID_NET) && !capable(CAP_NET_ADMIN))
> + goto err;
> +
> ret = -EEXIST;
> if (vduse_find_dev(config->name))
> goto err;
> @@ -2044,6 +2053,7 @@ static const struct vdpa_mgmtdev_ops vdpa_dev_mgmtdev_ops = {
>
> static struct virtio_device_id id_table[] = {
> { VIRTIO_ID_BLOCK, VIRTIO_DEV_ANY_ID },
> + { VIRTIO_ID_NET, VIRTIO_DEV_ANY_ID },
> { 0 },
> };
>
> --
> 2.43.0
>
>
