pci_iov_schema_add_vlan
pci_iov_schema_add_vlan(vf_schema, "vlan", 0, 0);
pci_iov_schema_add_vlan(vf_schema, "vlan", IOV_SCHEMA_HASDEFAULT,
pci_iov_schema_add_vlan(vf_schema,
void pci_iov_schema_add_vlan(nvlist_t *schema, const char *name,