m_set_priority
m_set_priority(m, CPL_PRIORITY_CONTROL);
m_set_priority(m, CPL_PRIORITY_CONTROL);
m_set_priority(m, CPL_PRIORITY_SETUP);
m_set_priority(m2, CPL_PRIORITY_DATA);
m_set_priority(m0, txqs.pidx);
m_set_priority(m, ndesc); /* save for restart */
m_set_priority(rspq->rspq_mh.mh_head, rss_hash);