IXGBE_VTEIMS
IXGBE_WRITE_REG(hw, IXGBE_VTEIMS, (1 << sc->vector));
device_printf(dev, "EIMS:\t%08x\n", IXGBE_READ_REG(hw, IXGBE_VTEIMS));
IXGBE_WRITE_REG(hw, IXGBE_VTEIMS, (1 << sc->vector));
IXGBE_WRITE_REG(hw, IXGBE_VTEIMS, mask);