1 files changed, 62 insertions, 0 deletions
diff --git a/src/plugins/wireguard/wireguard_index_table.c b/src/plugins/wireguard/wireguard_index_table.c
new file mode 100755
index 00000000000..5f81204b4c0
--- /dev/null
+++ b/src/plugins/wireguard/wireguard_index_table.c
@@ -0,0 +1,62 @@
+/*
+ * Copyright (c) 2020 Doc.ai and/or its affiliates.
+ * 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.
+ */
+
+#include <vppinfra/hash.h>
+#include <vppinfra/pool.h>
+#include <vppinfra/random.h>
+#include <wireguard/wireguard_index_table.h>
+
+u32
+wg_index_table_add (wg_index_table_t * table, u32 peer_pool_idx, u32 rnd_seed)
+{
+  u32 key;
+
+  while (1)
+    {
+      key = random_u32 (&rnd_seed);
+      if (hash_get (table->hash, key))
+	continue;
+
+      hash_set (table->hash, key, peer_pool_idx);
+      break;
+    }
+  return key;
+}
+
+void
+wg_index_table_del (wg_index_table_t * table, u32 key)
+{
+  uword *p;
+  p = hash_get (table->hash, key);
+  if (p)
+    hash_unset (table->hash, key);
+}
+
+u32 *
+wg_index_table_lookup (const wg_index_table_t * table, u32 key)
+{
+  uword *p;
+
+  p = hash_get (table->hash, key);
+  return (u32 *) p;
+}
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */