IXGBE_ADVTXD_PAYLEN_SHIFT
<< IXGBE_ADVTXD_PAYLEN_SHIFT);
*olinfo_status |= paylen << IXGBE_ADVTXD_PAYLEN_SHIFT;
*olinfo_status |= mp->m_pkthdr.len << IXGBE_ADVTXD_PAYLEN_SHIFT;