netmap_attach_common
if (netmap_attach_common(&hwna->up)) {
error = netmap_attach_common(na);
retval = netmap_attach_common(na);
int netmap_attach_common(struct netmap_adapter *);
error = netmap_attach_common(&mna->up);
error = netmap_attach_common(&nna->up);
error = netmap_attach_common(&mna->up);
error = netmap_attach_common(&sna->up);
error = netmap_attach_common(na);