openflow build environment setup

openflow/include/openvswitch/uuid.h

@@ -0,0 +1,35 @@
+/* Copyright (c) 2008, 2009, 2010 Nicira, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef OPENVSWITCH_UUID_H
+#define OPENVSWITCH_UUID_H 1
+
+#include "openvswitch/util.h"
+
+#define UUID_BIT 128            /* Number of bits in a UUID. */
+#define UUID_OCTET (UUID_BIT / 8) /* Number of bytes in a UUID. */
+
+/* A Universally Unique IDentifier (UUID) compliant with RFC 4122.
+ *
+ * Each of the parts is stored in host byte order, but the parts themselves are
+ * ordered from left to right.  That is, (parts[0] >> 24) is the first 8 bits
+ * of the UUID when output in the standard form, and (parts[3] & 0xff) is the
+ * final 8 bits. */
+struct uuid {
+    uint32_t parts[4];
+};
+BUILD_ASSERT_DECL(sizeof(struct uuid) == UUID_OCTET);
+
+#endif /* uuid.h */