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diff --git a/src/vnet/ipsec-gre/ipsec_gre.api b/src/vnet/ipsec-gre/ipsec_gre.api
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+/*
+ * Copyright (c) 2015-2016 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.
+ */
+
+/** \brief Add / del ipsec gre tunnel request
+    @param client_index - opaque cookie to identify the sender
+    @param context - sender context, to match reply w/ request
+    @param local_sa_id - local SA id
+    @param remote_sa_id - remote SA id
+    @param is_add - 1 if adding the tunnel, 0 if deleting
+    @param src_address - tunnel source address
+    @param dst_address - tunnel destination address
+*/
+define ipsec_gre_add_del_tunnel {
+    u32 client_index;
+    u32 context;
+    u32 local_sa_id;
+    u32 remote_sa_id;
+    u8 is_add;
+    u8 src_address[4];
+    u8 dst_address[4];
+};
+
+/** \brief Reply for add / del ipsec gre tunnel request
+    @param context - returned sender context, to match reply w/ request
+    @param retval - return code
+    @param sw_if_index - software index of the new ipsec gre tunnel
+*/
+define ipsec_gre_add_del_tunnel_reply {
+    u32 context;
+    i32 retval;
+    u32 sw_if_index;
+};
+
+/** \brief Dump ipsec gre tunnel table
+    @param client_index - opaque cookie to identify the sender
+    @param context - sender context, to match reply w/ request
+    @param tunnel_index - gre tunnel identifier or -1 in case of all tunnels
+*/
+define ipsec_gre_tunnel_dump {
+    u32 client_index;
+    u32 context;
+    u32 sw_if_index;
+};
+
+/** \brief ipsec gre tunnel operational state response
+    @param context - returned sender context, to match reply w/ request
+    @param sw_if_index - software index of the ipsec gre tunnel
+    @param local_sa_id - local SA id
+    @param remote_sa_id - remote SA id
+    @param src_address - tunnel source address
+    @param dst_address - tunnel destination address
+*/
+define ipsec_gre_tunnel_details {
+    u32 context;
+    u32 sw_if_index;
+    u32 local_sa_id;
+    u32 remote_sa_id;
+    u8 src_address[4];
+    u8 dst_address[4];
+};
+
+/*
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */
+ 
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