IXGBE_EITR
regs_buff[24] = IXGBE_READ_REG(hw, IXGBE_EITR(0));
IXGBE_WRITE_REG(&adapter->hw, IXGBE_EITR(v_idx), 1950);
IXGBE_WRITE_REG(hw, IXGBE_EITR(v_idx), itr_reg);