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diff --git a/src/plugins/svs/svs.api b/src/plugins/svs/svs.api
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+/* Hey Emacs use -*- mode: C -*- */
+/*
+ * Copyright (c) 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.
+ */
+
+/**
+ * @file
+ *   This file defines the vpp control-plane API messages
+ *   used to control the Source VRF select (SVS) plugin
+ */
+
+option version = "1.0.0";
+import "vnet/ip/ip_types.api";
+
+/**
+ * brief Get the plugin version
+ * @param client_index - opaque cookie to identify the sender
+ *@param context - sender context, to match reply w/ request
+ */
+define svs_plugin_get_version
+{
+  u32 client_index;
+  u32 context;
+};
+
+/**
+ * @brief Reply to get the plugin version
+ * @param context - returned sender context, to match reply w/ request
+ * @param major - Incremented every time a known breaking behavior change is introduced
+ * @param minor - Incremented with small changes, may be used to avoid buggy versions
+ */
+define svs_plugin_get_version_reply
+{
+  u32 context;
+  u32 major;
+  u32 minor;
+};
+
+/**
+ * @brief Add a table in which to add routes that will match against source
+ *        addresses
+ * @param client_index - opaque cookie to identify the sender
+ * @param context - sender context, to match reply w/ request
+ * @param af - Address Family
+ * @param table_id - User provided ID for the table
+ * @param is_add - add or delete
+ */
+autoreply define svs_table_add_del
+{
+  u32 client_index;
+  u32 context;
+  u8 is_add;
+  vl_api_address_family_t af;
+  u32 table_id;
+};
+
+/**
+ * @brief Add a route into the source address matching table
+ * @param client_index - opaque cookie to identify the sender
+ * @param context - sender context, to match reply w/ request
+ * @param prefix - prefix
+ * @param table_id - The SVS table (from svs_table_add_del)
+ * @param source_table_id - This is the table ID that will be used for
+ *                          the subsequent lookup of the packet. The V in SVS.
+ *                          this table must exist (from e.g. ip_table_add_del)
+ */
+autoreply define svs_route_add_del
+{
+  u32 client_index;
+  u32 context;
+  u8 is_add;
+  vl_api_prefix_t prefix;
+  u32 table_id;
+  u32 source_table_id;
+};
+
+/**
+ * @brief Enable SVS on a given interface by using the given table to match
+ *        RX'd packets' source addresses
+ * @param client_index - opaque cookie to identify the sender
+ * @param context - sender context, to match reply w/ request
+ * @param af - Address Family
+ * @param table_id - The SVS table (from svs_table_add_del)
+ * @param sw_if_index - Interface
+ */
+autoreply define svs_enable_disable
+{
+  u32 client_index;
+  u32 context;
+  u8 is_enable;
+  vl_api_address_family_t af;
+  u32 table_id;
+  u32 sw_if_index;
+};
+
+/**
+ * @brief Dump the SVS table mappings of table_id to interface
+ *        To see the routes added to a given table use ip_fib_dump()
+ */
+define svs_dump
+{
+  u32 client_index;
+  u32 context;
+};
+
+/**
+ * @brief SVS table-id to interface mapping
+ * @param context - sender context, to match reply w/ request
+ * @param af - Address Family
+ * @param table_id - The SVS table (from svs_table_add_del)
+ * @param sw_if_index - Interface
+ */
+define svs_details
+{
+  u32 context;
+  u32 table_id;
+  u32 sw_if_index;
+  vl_api_address_family_t af;
+};
+