VF_FLAG_ENABLED
vf->vf_flags = VF_FLAG_ENABLED;
(vf->vf_flags & VF_FLAG_ENABLED) ? " " : " disabled ",
if (!(vf->vf_flags & VF_FLAG_ENABLED))
if (!(vf->vf_flags & VF_FLAG_ENABLED))
vf->vf_flags = VF_FLAG_ENABLED;
if (vf->vf_flags & VF_FLAG_ENABLED)
if (!(vf->vf_flags & VF_FLAG_ENABLED))