IXGBE_RDRXCTL
rdrxctl = IXGBE_READ_REG(hw, IXGBE_RDRXCTL);
IXGBE_WRITE_REG(hw, IXGBE_RDRXCTL, rdrxctl);
reg = IXGBE_READ_REG(hw, IXGBE_RDRXCTL);
IXGBE_WRITE_REG(hw, IXGBE_RDRXCTL, reg);
reg = IXGBE_READ_REG(hw, IXGBE_RDRXCTL);
IXGBE_WRITE_REG(hw, IXGBE_RDRXCTL, reg);
reg = IXGBE_READ_REG(hw, IXGBE_RDRXCTL);
IXGBE_WRITE_REG(hw, IXGBE_RDRXCTL, reg);