NGBE_RDB_PB_CTL_PBEN
rxctrl |= NGBE_RDB_PB_CTL_PBEN;
if (rxctrl & NGBE_RDB_PB_CTL_PBEN) {
rxctrl &= ~NGBE_RDB_PB_CTL_PBEN;
NGBE_WRITE_REG_MASK(hw, NGBE_RDB_PB_CTL, NGBE_RDB_PB_CTL_PBEN,
NGBE_RDB_PB_CTL_PBEN);
if (reg & NGBE_RDB_PB_CTL_PBEN)