GEM_SEND_CTRL
if (!dp->mac_active && (flags & GEM_SEND_CTRL) == 0) {
if ((bp[0] & 1) && (flags & GEM_SEND_CTRL) == 0) {
txflag |= (flags & GEM_SEND_CTRL) << GEM_TXFLAG_PRIVATE_SHIFT;
if (!dp->mac_active && (flags & GEM_SEND_CTRL) == 0) {