vhost: optimize broadcast RARP sync with C11 atomic

[dpdk.git] / lib / librte_vhost / vhost_user.c

diff --git a/lib/librte_vhost/vhost_user.c b/lib/librte_vhost/vhost_user.c
index 971ccdb..6f85084 100644 (file)
--- a/lib/librte_vhost/vhost_user.c
+++ b/lib/librte_vhost/vhost_user.c
@@ -2145,11 +2145,10 @@ vhost_user_send_rarp(struct virtio_net **pdev, struct VhostUserMsg *msg,
         * Set the flag to inject a RARP broadcast packet at
         * rte_vhost_dequeue_burst().
         *
-        * rte_smp_wmb() is for making sure the mac is copied
-        * before the flag is set.
+        * __ATOMIC_RELEASE ordering is for making sure the mac is
+        * copied before the flag is set.
         */
-       rte_smp_wmb();
-       rte_atomic16_set(&dev->broadcast_rarp, 1);
+       __atomic_store_n(&dev->broadcast_rarp, 1, __ATOMIC_RELEASE);
        did = dev->vdpa_dev_id;
        vdpa_dev = rte_vdpa_get_device(did);
        if (vdpa_dev && vdpa_dev->ops->migration_done)