SEC_INC
((sc)->tab[SEC_INC(sc, cnt, wrap)])
((sc)->tab[SEC_INC(sc, cnt, wrap)] = val)
SEC_INC(sc, sc_ready_desc_put_cnt, SEC_DESCRIPTORS)
SEC_INC(sc, sc_queued_desc_put_cnt, SEC_DESCRIPTORS)
SEC_INC(sc, sc_free_desc_put_cnt, SEC_DESCRIPTORS)