- /*
- * Check to see if this is the last reference to the mbuf.
- * Note: the double check here is deliberate. If the ref_cnt is "atomic"
- * the call to "refcnt_update" is a very expensive operation, so we
- * don't want to call it in the case where we know we are the holder
- * of the last reference to this mbuf i.e. ref_cnt == 1.
- * If however, ref_cnt != 1, it's still possible that we may still be
- * the final decrementer of the count, so we need to check that
- * result also, to make sure the mbuf is freed properly.
- */
- if (likely (rte_mbuf_refcnt_read(m) == 1) ||
- likely (rte_mbuf_refcnt_update(m, -1) == 0)) {
-
- rte_mbuf_refcnt_set(m, 0);