Function rte_mbuf_ext_refcnt_update

dpdk/lib/mbuf/rte_mbuf.h:495–507

* Add given value to refcnt of an external buffer and return its new * value. * * @param shinfo * Shared data of the external buffer. * @param value * Value to add/subtract * @return * Updated value */

 *   Updated value
 */
static inline uint16_t
rte_mbuf_ext_refcnt_update(struct rte_mbuf_ext_shared_info *shinfo,
	int16_t value)
{
	if (likely(rte_mbuf_ext_refcnt_read(shinfo) == 1)) {
		++value;
		rte_mbuf_ext_refcnt_set(shinfo, (uint16_t)value);
		return (uint16_t)value;
	}

	return rte_atomic_fetch_add_explicit(&shinfo->refcnt, value,
				 rte_memory_order_acq_rel) + value;
}

/** Mbuf prefetch */
#define RTE_MBUF_PREFETCH_TO_FREE(m) do {       \