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diff --git a/src/vnet/devices/pipe/pipe.api b/src/vnet/devices/pipe/pipe.api
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+/*
+ * Copyright (c) 2018 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.
+ */
+
+/** \file
+
+    This file defines vpe control-plane API messages for
+    the Linux kernel PIPE device driver
+*/
+
+option version = "1.0.0";
+
+/** \brief Initialize a new pipe interface with the given paramters
+    @param client_index - opaque cookie to identify the sender
+    @param context - sender context, to match reply w/ request
+    @param is_specified - if non-0, a specific user_instance is being requested
+    @param user_instance - requested instance, ~0 => dynamically allocate
+*/
+define pipe_create
+{
+  u32 client_index;
+  u32 context;
+  u8 is_specified;
+  u32 user_instance;
+};
+
+/** \brief Reply for pipe create reply
+    @param context - returned sender context, to match reply w/ request
+    @param retval - return code
+    @param parent_sw_if_index - software index allocated for the new pipe parent interface
+                                Use the parent interface for link up/down and to delete
+    @param pipe_sw_if_index - the two SW indicies that form the ends of the pipe.
+*/
+define pipe_create_reply
+{
+  u32 context;
+  i32 retval;
+  u32 parent_sw_if_index;
+  u32 pipe_sw_if_index[2];
+};
+
+/** \brief Delete pipe interface
+    @param client_index - opaque cookie to identify the sender
+    @param context - sender context, to match reply w/ request
+    @param parnet_sw_if_index - interface index of existing pipe interface
+*/
+autoreply define pipe_delete
+{
+  u32 client_index;
+  u32 context;
+  u32 parent_sw_if_index;
+};
+
+/** \brief Dump pipe interfaces request */
+define pipe_dump
+{
+  u32 client_index;
+  u32 context;
+};
+
+/** \brief Reply for pipe dump request
+    @param sw_if_index - software index of pipe interface
+    @param parent_sw_if_index - software index allocated for the pipe parent interface
+    @param pipe_sw_if_index - the two SW indicies that form the ends of the pipe.
+    @param instance - instance allocated
+*/
+define pipe_details
+{
+  u32 context;
+  u32 parent_sw_if_index;
+  u32 pipe_sw_if_index[2];
+  u32 instance;
+};
+
+/*
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */