IGC_ADVTXD_PAYLEN_SHIFT
olinfo_status = first->bytecount << IGC_ADVTXD_PAYLEN_SHIFT;
u32 olinfo_status = paylen << IGC_ADVTXD_PAYLEN_SHIFT;
olinfo_status = head->bytecount << IGC_ADVTXD_PAYLEN_SHIFT;
olinfo_status = xdp_desc.len << IGC_ADVTXD_PAYLEN_SHIFT;