Catalli's threaded switch

[sliver-openvswitch.git] / lib / port-array.c

diff --git a/lib/port-array.c b/lib/port-array.c
index 87bb216..be4c0dc 100644 (file)
--- a/lib/port-array.c
+++ b/lib/port-array.c
@@ -1,17 +1,17 @@
 /*
- * Copyright (c) 2008 Nicira Networks.
+ * Copyright (c) 2008, 2010 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.
  */
 
 #include <config.h>
@@ -95,6 +95,17 @@ port_array_set(struct port_array *pa, uint16_t idx, void *p)
     l3->l3[PORT_ARRAY_L3(idx)] = p;
 }
 
+/* Sets 'pa' element numbered 'idx' to NULL. */
+void
+port_array_delete(struct port_array *pa, uint16_t idx)
+{
+    unsigned int l1_idx = PORT_ARRAY_L1(idx);
+    unsigned int l2_idx = PORT_ARRAY_L2(idx);
+    unsigned int l3_idx = PORT_ARRAY_L3(idx);
+
+    pa->l1[l1_idx]->l2[l2_idx]->l3[l3_idx] = NULL;
+}
+
 static void *
 next(const struct port_array *pa, unsigned int *idxp)
 {