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diff --git a/src/vnet/srmpls/sr.h b/src/vnet/srmpls/sr.h
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+/*
+ * Copyright (c) 2015 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
+ * @brief Segment Routing MPLS data structures definitions
+ *
+ */
+
+#ifndef included_vnet_srmpls_h
+#define included_vnet_srmpls_h
+
+#include <vnet/vnet.h>
+#include <vnet/mpls/packet.h>
+#include <vnet/fib/mpls_fib.h>
+#include <vnet/ip/ip.h>
+#include <vnet/ip/lookup.h>
+#include <vnet/dpo/dpo.h>
+#include <vnet/dpo/replicate_dpo.h>
+
+#include <stdlib.h>
+#include <string.h>
+
+/* SR policy types */
+#define SR_POLICY_TYPE_DEFAULT 0
+#define SR_POLICY_TYPE_SPRAY 1
+
+#define SR_SEGMENT_LIST_WEIGHT_DEFAULT 1
+
+#define SR_STEER_IPV4 4
+#define SR_STEER_IPV6 6
+
+/**
+ * @brief SR Segment List (SID list)
+ */
+typedef struct
+{
+  /**
+    * SIDs (key)
+    */
+  mpls_label_t *segments;
+
+  /**
+    * SID list weight (wECMP / UCMP)
+    */
+  u32 weight;
+
+} mpls_sr_sl_t;
+
+typedef struct
+{
+  u32 *segments_lists;		/**< Pool of SID lists indexes */
+
+  mpls_label_t bsid;		/**< BindingSID (key) */
+
+  u8 type;					/**< Type (default is 0) */
+  /* SR Policy specific DPO                                       */
+  /* IF Type = DEFAULT Then Load Balancer DPO among SID lists     */
+  /* IF Type = SPRAY then Spray DPO with all SID lists            */
+
+} mpls_sr_policy_t;
+
+/**
+ * @brief Steering db key
+ *
+ * L3 is IPv4/IPv6 + mask
+ */
+typedef struct
+{
+  ip46_address_t prefix;	/**< IP address of the prefix */
+  u32 mask_width;			/**< Mask width of the prefix */
+  u32 fib_table;			/**< VRF of the prefix */
+  u8 traffic_type;			/**< Traffic type (IPv4, IPv6, L2) */
+  u8 padding[3];
+} sr_mpls_steering_key_t;
+
+typedef struct
+{
+  sr_mpls_steering_key_t classify;		/**< Traffic classification */
+  u32 sr_policy;						/**< SR Policy index */
+} mpls_sr_steering_policy_t;
+
+/**
+ * @brief Segment Routing main datastructure
+ */
+typedef struct
+{
+  /**
+    * SR SID lists
+    */
+  mpls_sr_sl_t *sid_lists;
+
+  /**
+    * SR MPLS policies
+    */
+  mpls_sr_policy_t *sr_policies;
+
+  /**
+    * Hash table mapping BindingSID to SR MPLS policy
+    */
+  uword *sr_policies_index_hash;
+
+  /**
+    * Pool of SR steer policies instances
+    */
+  mpls_sr_steering_policy_t *steer_policies;
+
+  /**
+    * MHash table mapping steering rules to SR steer instance
+    */
+  mhash_t sr_steer_policies_hash;
+
+  /**
+    * convenience
+    */
+  vlib_main_t *vlib_main;
+  vnet_main_t *vnet_main;
+} mpls_sr_main_t;
+
+extern mpls_sr_main_t sr_mpls_main;
+
+extern int
+sr_mpls_policy_add (mpls_label_t bsid, mpls_label_t * segments,
+		    u8 behavior, u32 weight);
+
+extern int
+sr_mpls_policy_mod (mpls_label_t bsid, u32 index, u8 operation,
+		    mpls_label_t * segments, u32 sl_index, u32 weight);
+
+extern int sr_mpls_policy_del (mpls_label_t bsid, u32 index);
+
+#endif /* included_vnet_sr_mpls_h */
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */