New upstream version 18.11.2

[deb_dpdk.git] / lib / librte_ring / rte_ring_generic.h

diff --git a/lib/librte_ring/rte_ring_generic.h b/lib/librte_ring/rte_ring_generic.h
index ea7dbe5..953cdbb 100644 (file)
--- a/lib/librte_ring/rte_ring_generic.h
+++ b/lib/librte_ring/rte_ring_generic.h
@@ -158,11 +158,14 @@ __rte_ring_move_cons_head(struct rte_ring *r, unsigned int is_sc,
                        return 0;
 
                *new_head = *old_head + n;
-               if (is_sc)
-                       r->cons.head = *new_head, success = 1;
-               else
+               if (is_sc) {
+                       r->cons.head = *new_head;
+                       rte_smp_rmb();
+                       success = 1;
+               } else {
                        success = rte_atomic32_cmpset(&r->cons.head, *old_head,
                                        *new_head);
+               }
        } while (unlikely(success == 0));
        return n;
 }