1 files changed, 61 insertions, 0 deletions
diff --git a/src/vnet/session/session_table.h b/src/vnet/session/session_table.h
new file mode 100644
index 00000000000..ce0b4a2ff25
--- /dev/null
+++ b/src/vnet/session/session_table.h
@@ -0,0 +1,61 @@
+/*
+ * Copyright (c) 2017 Cisco 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.
+ */
+
+#ifndef SRC_VNET_SESSION_SESSION_TABLE_H_
+#define SRC_VNET_SESSION_SESSION_TABLE_H_
+
+#include <vppinfra/bihash_16_8.h>
+#include <vppinfra/bihash_48_8.h>
+
+typedef struct _session_lookup_table
+{
+  /**
+   * Lookup tables for established sessions and listeners
+   */
+  clib_bihash_16_8_t v4_session_hash;
+  clib_bihash_48_8_t v6_session_hash;
+
+  /**
+   * Lookup tables for half-open sessions
+   */
+  clib_bihash_16_8_t v4_half_open_hash;
+  clib_bihash_48_8_t v6_half_open_hash;
+} session_table_t;
+
+#define SESSION_TABLE_INVALID_INDEX ((u32)~0)
+#define SESSION_LOCAL_TABLE_PREFIX ((u32)~0)
+#define SESSION_INVALID_INDEX ((u32)~0)
+
+typedef int (*ip4_session_table_walk_fn_t) (clib_bihash_kv_16_8_t * kvp,
+					    void *ctx);
+
+void ip4_session_table_walk_cb (clib_bihash_kv_16_8_t * kvp, void *arg);
+void ip4_session_table_walk (clib_bihash_16_8_t * hash,
+			     ip4_session_table_walk_fn_t fn, void *arg);
+
+session_table_t *session_table_alloc (void);
+session_table_t *session_table_get (u32 table_index);
+u32 session_table_index (session_table_t * slt);
+void session_table_init (session_table_t * slt);
+
+#endif /* SRC_VNET_SESSION_SESSION_TABLE_H_ */
+/* *INDENT-ON* */
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */