ibd_n2h_gid
ibd_n2h_gid(mac, &mgid);
ibd_n2h_gid(&routermac, &mgid);
ibd_n2h_gid(&ce->ac_mac, &destgid);
static void ibd_n2h_gid(ipoib_mac_t *, ib_gid_t *);
ibd_n2h_gid(mcast, &mgid);