Re: [dpdk-dev] [PATCH v4 09/14] virtio: ethdev: check for vfio interface

[Yuanhan Liu <yuanhan.liu@linux.intel.com>]

On Thu, Jan 14, 2016 at 06:58:32PM +0530, Santosh Shukla wrote:
> Introducing api to check interface type is vfio or not, if interface is vfio
> then update struct virtio_vfio_dev {}.
> 
> Those two apis are:
> - virtio_chk_for_vfio
> - virtio_hw_init_by_vfio
> 
> Signed-off-by: Santosh Shukla <sshukla@mvista.com>
..
> +/* Init virtio by vfio-way */
> +static int virtio_hw_init_by_vfio(struct virtio_hw *hw,
> +				  struct rte_pci_device *pci_dev)
> +{
> +	struct virtio_vfio_dev *vdev;
> +
> +	vdev = &hw->dev;
> +	if (virtio_chk_for_vfio(pci_dev) < 0) {
> +		vdev->is_vfio = false;
> +		vdev->pci_dev = NULL;
> +		return -1;
> +	}
> +
> +	/* .. So attached interface is vfio */
> +	vdev->is_vfio = true;
> +	vdev->pci_dev = pci_dev;

Normally, I don't like the way of adding yet another "virtio_hw_init_by_xxx".

As suggested in another reply, would pci_dev->kdrv checking be enough?
If so, do it in simple way.

	--ylu