X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=lib%2Fofp-msgs.c;h=d136f73d47cefd457a249d2c0a21d360d3178db3;hb=b0fb94a346e52f36aeef238dd5f9bef9a10c14ef;hp=af4178eb4867b843561c0aa70aa4fce45ad55ed3;hpb=67680b012be30d9c26eab999b83b08c6eb32dbd2;p=sliver-openvswitch.git

diff --git a/lib/ofp-msgs.c b/lib/ofp-msgs.c
index af4178eb4..d136f73d4 100644
--- a/lib/ofp-msgs.c
+++ b/lib/ofp-msgs.c
@@ -23,6 +23,7 @@
 #include "ofpbuf.h"
 #include "openflow/nicira-ext.h"
 #include "openflow/openflow.h"
+#include "ovs-thread.h"
 #include "vlog.h"
 
 VLOG_DEFINE_THIS_MODULE(ofp_msgs);
@@ -109,8 +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
@@ -988,9 +992,10 @@ ofpraw_from_ofphdrs(enum ofpraw *raw, const struct ofphdrs *hdrs)
 static void
 ofpmsgs_init(void)
 {
+    static struct ovsthread_once once = OVSTHREAD_ONCE_INITIALIZER;
     const struct raw_info *info;
 
-    if (raw_instance_map.buckets) {
+    if (!ovsthread_once_start(&once)) {
         return;
     }
 
@@ -1008,4 +1013,6 @@ ofpmsgs_init(void)
                         ofphdrs_hash(&inst->hdrs));
         }
     }
+
+    ovsthread_once_done(&once);
 }