IXGBE_FCTRL
rctl = IXGBE_READ_REG(&sc->hw, IXGBE_FCTRL);
IXGBE_WRITE_REG(&sc->hw, IXGBE_FCTRL, rctl);
IXGBE_WRITE_REG(&sc->hw, IXGBE_FCTRL, rctl);
IXGBE_WRITE_REG(&sc->hw, IXGBE_FCTRL, rctl);
fctrl = IXGBE_READ_REG(&sc->hw, IXGBE_FCTRL);
IXGBE_WRITE_REG(&sc->hw, IXGBE_FCTRL, fctrl);
fctrl = IXGBE_READ_REG(hw, IXGBE_FCTRL);
IXGBE_WRITE_REG(hw, IXGBE_FCTRL, fctrl);
fctrl_reg = IXGBE_READ_REG(hw, IXGBE_FCTRL);
IXGBE_WRITE_REG(hw, IXGBE_FCTRL, fctrl_reg);
fctrl = IXGBE_READ_REG(hw, IXGBE_FCTRL);
IXGBE_WRITE_REG(hw, IXGBE_FCTRL, fctrl);
fctrl = IXGBE_READ_REG(hw, IXGBE_FCTRL);
IXGBE_WRITE_REG(hw, IXGBE_FCTRL, fctrl);
reg = IXGBE_READ_REG(hw, IXGBE_FCTRL);
IXGBE_WRITE_REG(hw, IXGBE_FCTRL, reg);