TAILQ_INSERT_HEAD
TAILQ_INSERT_HEAD(&ctrlr->free_io_qpairs, qpair, tailq);
TAILQ_INSERT_HEAD(&sc->sc_txbuf_mgmt, bf, bf_list);
TAILQ_INSERT_HEAD(&sc->sc_txbuf, bf, bf_list);
TAILQ_INSERT_HEAD(&txq->axq_tidq, tid, axq_qelem);
TAILQ_INSERT_HEAD(&(_tq)->axq_q, (_elm), _field); \
TAILQ_INSERT_HEAD(&(_tq)->tid_q, (_elm), _field); \
TAILQ_INSERT_HEAD(&(_tq)->filtq.tid_q, (_elm), _field); \
TAILQ_INSERT_HEAD(&ifp->if_multiaddrs, addr, ifma_link);