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diff --git a/hicn-plugin/src/strategy.h b/hicn-plugin/src/strategy.h
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+/*
+ * Copyright (c) 2017-2019 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 __HICN_STRATEGY__
+#define __HICN_STRATEGY__
+
+#include "hicn.h"
+#include "hashtb.h"
+#include "mgmt.h"
+#include "faces/face.h"
+
+/**
+ * @File
+ *
+ * A strategy is defined as a vpp node and a set of function that will be called
+ * during the packet processing. Having one vpp node per strategy allows to
+ * easily process multiple interests in the same node (x2 or x4) and call the
+ * same function for choosing the next hop.
+ * Here we provide:
+ * - a template for the callbacks to implement in order to create a new strategy
+ *   (hicn_fwd_strategy_t)
+ * - the base structure for a strategy node
+ *   (list of next vpp nodes, errors, tracing and the main function processing an
+ *    interest and calling hicn_select_next_hop)
+ */
+
+typedef struct hicn_strategy_vft_s
+{
+  void (*hicn_receive_data) (index_t dpo_idx, int nh_idx);
+  void (*hicn_on_interest_timeout) (index_t dpo_idx);
+  void (*hicn_add_interest) (index_t dpo_idx, hicn_hash_entry_t * pit_entry);
+    u32 (*hicn_select_next_hop) (index_t dpo_idx, int *nh_idx,
+				 dpo_id_t ** outface);
+    u32 (*get_strategy_node_index) (void);
+					 /**< Return the vlib node index implementing the strategy */
+} hicn_strategy_vft_t;
+
+hicn_face_vft_t *hicn_strategy_get_face_vft (u16 index);
+
+/* Strategy node API */
+/* Basic interest processing function. To be called in all the strategy nodes */
+uword
+hicn_forward_interest_fn (vlib_main_t * vm,
+			  vlib_node_runtime_t * node,
+			  vlib_frame_t * frame,
+			  hicn_strategy_vft_t * strategy,
+			  vlib_node_registration_t * hicn_strategy_node);
+
+/* Trace context struct */
+typedef struct
+{
+  u32 next_index;
+  u32 sw_if_index;
+  u8 pkt_type;
+} hicn_strategy_trace_t;
+
+typedef enum
+{
+  HICN_STRATEGY_NEXT_INTEREST_HITPIT,
+  HICN_STRATEGY_NEXT_ERROR_DROP,
+  HICN_STRATEGY_N_NEXT,
+} hicn_strategy_next_t;
+
+#endif /* //__HICN_STRATEGY__ */
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables: eval: (c-set-style "gnu") End:
+ */