From 1d9ec3ee5084a9fd9162b9389cb2b13dda21e965 Mon Sep 17 00:00:00 2001
From: Vincenzo Maffione <vmaffione@FreeBSD.org>
Date: Wed, 5 Dec 2018 15:38:52 +0000
Subject: [PATCH] netmap.h: include stdatomic.h

The stdatomic.h header exports atomic_thread_fence(), that
can be used to implement the nm_stst_barrier() macro needed
by netmap.

MFC after:	3 days
---
 sys/net/netmap.h | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/sys/net/netmap.h b/sys/net/netmap.h
index 681e50d2b8a9..f3688fc9e919 100644
--- a/sys/net/netmap.h
+++ b/sys/net/netmap.h
@@ -784,9 +784,10 @@ static inline void nm_stst_barrier(void)
 #ifdef _KERNEL
 #define nm_stst_barrier	atomic_thread_fence_rel
 #else  /* !_KERNEL */
+#include <stdatomic.h>
 static inline void nm_stst_barrier(void)
 {
-	__atomic_thread_fence(__ATOMIC_RELEASE);
+	atomic_thread_fence(memory_order_release);
 }
 #endif /* !_KERNEL */