nvmf_cpl_status
pdu.ddp = (m->m_pkthdr.nvmf_cpl_status & CMP_STATUS_DDP) != 0;
m->m_pkthdr.nvmf_cpl_status = cpl->status;
cpl_error = m->m_pkthdr.nvmf_cpl_status & CMP_STATUS_ERROR_MASK;