VFInfo doesn't show for Red Hat, Inc. Virtio network device

[laihezhao]

I has a dpu device that uses Red Hat Virtio network driver for the viritio-net,

60:00.0 Ethernet controller: Red Hat, Inc. Virtio network device (rev 01)
61:00.0 Ethernet controller: Red Hat, Inc. Virtio network device (rev 01)

the vf information :

    link/ether ee:b5:08:ac:97:23 brd ff:ff:ff:ff:ff:ff
    altname enp97s0v126

i use sriov-cni as the kubernetes cni

github.com/k8snetworkplumbingwg/sriov-cni/

code

	if err != nil {
		return fmt.Errorf("failed to lookup master %q: %v", conf.Master, err)
	}
	// Save current the VF state before modifying it
	vfState := getVfInfo(pfLink, conf.VFID)
	if vfState == nil {
		return fmt.Errorf("failed to find vf %d", conf.VFID)
	}

Error

failed to find vf 8

I printf the pfLink variable, that pfLink.attr().Vfs is []