IXGBE_VLVFB
bits = IXGBE_READ_REG(hw, IXGBE_VLVFB(vlvf_index * 2 + vind / 32));
!IXGBE_READ_REG(hw, IXGBE_VLVFB(vlvf_index * 2 + 1 - vind / 32))) {
IXGBE_WRITE_REG(hw, IXGBE_VLVFB(vlvf_index * 2 + vind / 32), 0);
IXGBE_WRITE_REG(hw, IXGBE_VLVFB(vlvf_index * 2 + vind / 32), bits);
IXGBE_WRITE_REG(hw, IXGBE_VLVFB(offset * 2), 0);
IXGBE_WRITE_REG(hw, IXGBE_VLVFB(offset * 2 + 1), 0);