X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=lib%2Fofp-msgs.c;h=d136f73d47cefd457a249d2c0a21d360d3178db3;hb=fd76a6f94338b668175336434b156827458b5e7d;hp=5e043d2450898b25432f3473bf1199028739fe7d;hpb=cc36576070df622d0fc7a6e26ce01027e12b5b59;p=sliver-openvswitch.git

diff --git a/lib/ofp-msgs.c b/lib/ofp-msgs.c
index 5e043d245..d136f73d4 100644
--- a/lib/ofp-msgs.c
+++ b/lib/ofp-msgs.c
@@ -110,8 +110,11 @@ static enum ofperr ofpraw_from_ofphdrs(enum ofpraw *, const struct ofphdrs *);
 static ovs_be32
 alloc_xid(void)
 {
-    static uint32_t next_xid = 1;
-    return htonl(next_xid++);
+    static atomic_uint32_t next_xid = ATOMIC_VAR_INIT(1);
+    uint32_t xid;
+
+    atomic_add(&next_xid, 1, &xid);
+    return htonl(xid);
 }
 
 static uint32_t