Function virtqueue_store_flags_packed

dpdk/drivers/net/virtio/virtqueue.h:88–107

}

static inline void
virtqueue_store_flags_packed(struct vring_packed_desc *dp,
			      uint16_t flags, uint8_t weak_barriers)
{
	if (weak_barriers) {
/* x86 prefers to using rte_io_wmb over __atomic_store_n as it reports
 * a better perf(~1.5%), which comes from the saved branch by the compiler.
 * The if and else branch are identical on the platforms except Arm.
 */
#ifdef RTE_ARCH_ARM
		__atomic_store_n(&dp->flags, flags, __ATOMIC_RELEASE);
#else
		rte_io_wmb();
		dp->flags = flags;
#endif
	} else {
		rte_io_wmb();
		dp->flags = flags;
	}
}

#ifdef RTE_PMD_PACKET_PREFETCH
#define rte_packet_prefetch(p)  rte_prefetch1(p)