dpif-linux: Don't allow arbitrary internal ports to identify a datapath.

[openvswitch] / lib / hmap.h

diff --git a/lib/hmap.h b/lib/hmap.h
index 7f4b00fc35915f72342379ff88cb813a66b1bb8d..1809a91b5f85b5b1f4c97fcc5085f4d15bc5c9f9 100644 (file)
--- a/lib/hmap.h
+++ b/lib/hmap.h
@@ -1,17 +1,17 @@
 /*
  * Copyright (c) 2008, 2009 Nicira Networks.
  *
- * Permission to use, copy, modify, and/or distribute this software for any
- * purpose with or without fee is hereby granted, provided that the above
- * copyright notice and this permission notice appear in all copies.
+ * 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:
  *
- * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
- * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
- * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
- * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
- * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
- * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ *     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 HMAP_H
@@ -108,6 +108,14 @@ hmap_count(const struct hmap *hmap)
     return hmap->n;
 }
 
+/* Returns the maximum number of nodes that 'hmap' may hold before it should be
+ * rehashed. */
+static inline size_t
+hmap_capacity(const struct hmap *hmap)
+{
+    return hmap->mask * 2 + 1;
+}
+
 /* Returns true if 'hmap' currently contains no nodes,
  * false otherwise. */
 static inline bool