netmap_hw_adapter
struct netmap_hw_adapter *hwna =
(struct netmap_hw_adapter*)na;
struct netmap_hw_adapter *hwna = NULL;
if (size < sizeof(struct netmap_hw_adapter)) {
return netmap_attach_ext(arg, sizeof(struct netmap_hw_adapter),
struct netmap_hw_adapter up;
struct netmap_hw_adapter hwup;
struct netmap_hw_adapter dr;