[HICN-547] Removing punting through acl for interests

Change-Id: I71767f732ec6ede1efc66e5a99f09c3207367dcb
Signed-off-by: Alberto Compagno <acompagn+fdio@cisco.com>

36 files changed, 1007 insertions, 1035 deletions

diff --git a/hicn-plugin/src/CMakeLists.txt b/hicn-plugin/src/CMakeLists.txt
index 68c583e0b..db8fcef4c 100644
--- a/hicn-plugin/src/CMakeLists.txt
+++ b/hicn-plugin/src/CMakeLists.txt
@@ -66,8 +66,9 @@ set(HICN_PLUGIN_SOURCE_FILES
     ${CMAKE_CURRENT_SOURCE_DIR}/mgmt.c
     ${CMAKE_CURRENT_SOURCE_DIR}/pcs.c
     ${CMAKE_CURRENT_SOURCE_DIR}/route.c
+    ${CMAKE_CURRENT_SOURCE_DIR}/strategy_dpo_ctx.c
     ${CMAKE_CURRENT_SOURCE_DIR}/strategy_dpo_manager.c
-    ${CMAKE_CURRENT_SOURCE_DIR}/strategy.c
+    ${CMAKE_CURRENT_SOURCE_DIR}/strategy_node.c
     ${CMAKE_CURRENT_SOURCE_DIR}/interest_pcslookup_node.c
     ${CMAKE_CURRENT_SOURCE_DIR}/interest_hitpit_node.c
     ${CMAKE_CURRENT_SOURCE_DIR}/interest_hitcs_node.c
@@ -298,4 +299,4 @@ set(HICNPLUGIN_INCLUDE_DIRS
     ${CMAKE_CURRENT_BINARY_DIR}/vpp_plugins
     ${VPP_INCLUDE_DIRS}
     CACHE INTERNAL "" FORCE)
-set(HICNPLUGIN_LIBRARIES ${VPP_LIBRARIES} CACHE INTERNAL "" FORCE)
\ No newline at end of file
+set(HICNPLUGIN_LIBRARIES ${VPP_LIBRARIES} CACHE INTERNAL "" FORCE)
diff --git a/hicn-plugin/src/data_pcslookup_node.c b/hicn-plugin/src/data_pcslookup_node.c
index 1ae36202f..cbea07871 100644
--- a/hicn-plugin/src/data_pcslookup_node.c
+++ b/hicn-plugin/src/data_pcslookup_node.c
@@ -73,7 +73,7 @@ hicn_data_pcslookup_node_fn (vlib_main_t * vm,
 	  hicn_name_t name;
 	  hicn_header_t *hicn0 = NULL;
 	  u32 node_id0 = 0;
-	  u8 dpo_ctx_id0 = 0;
+	  index_t dpo_ctx_id0 = 0;
 	  int ret0;
 	  u8 vft_id0;
 	  u8 is_cs0;
@@ -117,7 +117,9 @@ hicn_data_pcslookup_node_fn (vlib_main_t * vm,
 	      int res =
 		hicn_hashtb_lookup_node (rt->pitcs->pcs_table, nameptr,
 					 namelen, name_hash,
-					 1 /*is_data. Do not take lock if hit CS */ ,
+					 1
+					 /*is_data. Do not take lock if hit CS */
+					 ,
 					 &node_id0, &dpo_ctx_id0, &vft_id0,
 					 &is_cs0, &hash_entry_id, &bucket_id,
 					 &bucket_is_overflown);
diff --git a/hicn-plugin/src/data_push_node.c b/hicn-plugin/src/data_push_node.c
index 21ebae16f..fc19362f9 100644
--- a/hicn-plugin/src/data_push_node.c
+++ b/hicn-plugin/src/data_push_node.c
@@ -99,7 +99,7 @@ hicn_new_data (vlib_main_t * vm, hicn_data_push_runtime_t * rt,
   hicn_header_t *hicn0 = vlib_buffer_get_current (b0);
   hicn_buffer_t *hicnb0 = hicn_get_buffer (b0);
   u32 node_id0 = 0;
-  u8 dpo_ctx_id0 = ~0;
+  index_t dpo_ctx_id0 = ~0;
   u8 vft_id0 = default_dpo.hicn_dpo_get_type ();
   u8 is_cs0 = 1;
   u8 hash_entry_id = 0;
diff --git a/hicn-plugin/src/faces/app/face_cons.c b/hicn-plugin/src/faces/app/face_cons.c
index f258da787..e51201c21 100644
--- a/hicn-plugin/src/faces/app/face_cons.c
+++ b/hicn-plugin/src/faces/app/face_cons.c
@@ -73,10 +73,7 @@ hicn_face_cons_add (ip4_address_t * nh_addr4, ip6_address_t * nh_addr6,
   face = hicn_dpoi_get_from_idx (*faceid2);
   face->shared.flags |= HICN_FACE_FLAGS_APPFACE_CONS;
 
-  return vnet_feature_enable_disable ("ip6-unicast",
-				      "hicn-iface-ip6-input", swif, 1, 0,
-				      0) ==
-    0 ? HICN_ERROR_NONE : HICN_ERROR_APPFACE_FEATURE;
+  return HICN_ERROR_NONE;
 }
 
 int
@@ -89,13 +86,7 @@ hicn_face_cons_del (hicn_face_id_t face_id)
 
   if (face->shared.flags & HICN_FACE_FLAGS_APPFACE_CONS)
     {
-      int ret = hicn_face_ip_del (face_id);
-
-      return ret ==
-	HICN_ERROR_NONE
-	? (vnet_feature_enable_disable
-	   ("ip6-unicast", "hicn-iface-ip6-input", face->shared.sw_if, 0,
-	    0, 0) == 0 ? HICN_ERROR_NONE : HICN_ERROR_APPFACE_FEATURE) : ret;
+      return hicn_face_ip_del (face_id);
     }
   else
     {
@@ -114,15 +105,6 @@ format_hicn_face_cons (u8 * s, va_list * args)
   return s;
 }
 
-/* *INDENT-OFF* */
-VNET_FEATURE_INIT(hicn_cons_app, static)=
-{
-  .arc_name = "ip6-unicast",
-  .node_name = "hicn-iface-ip6-input",
-  .runs_before = VNET_FEATURES("ip6-inacl"),
-};
-/* *INDENT-ON* */
-
 /*
  * fd.io coding-style-patch-verification: ON
  *
diff --git a/hicn-plugin/src/faces/face.c b/hicn-plugin/src/faces/face.c
index fa9d0d203..f2dcdd151 100644
--- a/hicn-plugin/src/faces/face.c
+++ b/hicn-plugin/src/faces/face.c
@@ -42,7 +42,7 @@ const char *HICN_FACE_CTRX_STRING[] = {
 u8 *
 face_show (u8 * s, int face_id, u32 indent)
 {
-  s = format (s, "Faces:\n", indent);
+  s = format (s, "%U Faces:\n", format_white_space, indent);
   indent += 4;
   int i;
   vec_foreach_index (i, face_dpo_vec)
@@ -97,7 +97,7 @@ format_hicn_face_all (u8 * s, int n, ...)
   va_start (ap, n);
   u32 indent = va_arg (ap, u32);
 
-  s = format (s, "Faces: %d\n", indent);
+  s = format (s, "%U Faces:\n", format_white_space, indent);
 
   hicn_face_t *face;
 
diff --git a/hicn-plugin/src/faces/ip/face_ip.c b/hicn-plugin/src/faces/ip/face_ip.c
index f4ae5429d..a2fe069ed 100644
--- a/hicn-plugin/src/faces/ip/face_ip.c
+++ b/hicn-plugin/src/faces/ip/face_ip.c
@@ -41,22 +41,12 @@ hicn_face_ip_init (vlib_main_t * vm)
 
   /* Default Strategy has index 0 and it always exists */
   strategy_face_ip4_vlib_edge = vlib_node_add_next (vm,
-						    hicn_dpo_get_strategy_vft
-						    (default_dpo.
-						     hicn_dpo_get_type ())->
-						    get_strategy_node_index
-						    (),
-						    hicn_face_ip4_output_node.
-						    index);
+						    hicn_strategy_node.index,
+						    hicn_face_ip4_output_node.index);
 
   strategy_face_ip6_vlib_edge = vlib_node_add_next (vm,
-						    hicn_dpo_get_strategy_vft
-						    (default_dpo.
-						     hicn_dpo_get_type ())->
-						    get_strategy_node_index
-						    (),
-						    hicn_face_ip6_output_node.
-						    index);
+						    hicn_strategy_node.index,
+						    hicn_face_ip6_output_node.index);
   /*
    * Create and edge between al the other strategy nodes and the
    * ip_encap nodes.
@@ -64,12 +54,10 @@ hicn_face_ip_init (vlib_main_t * vm)
   for (int i = 1; i < strategy_nodes_n; i++)
     {
       u32 temp_index4 = vlib_node_add_next (vm,
-					    hicn_dpo_get_strategy_vft_from_id
-					    (i)->get_strategy_node_index (),
+					    hicn_strategy_node.index,
 					    hicn_face_ip4_output_node.index);
       u32 temp_index6 = vlib_node_add_next (vm,
-					    hicn_dpo_get_strategy_vft_from_id
-					    (i)->get_strategy_node_index (),
+					    hicn_strategy_node.index,
 					    hicn_face_ip6_output_node.index);
       ASSERT (temp_index4 == strategy_face_ip4_vlib_edge);
       ASSERT (temp_index6 == strategy_face_ip6_vlib_edge);
@@ -104,66 +92,74 @@ hicn_face_ip_del (hicn_face_id_t face_id)
     {
       hicn_face_ip4_get_key (&(face_ip->local_addr.ip4), face->shared.sw_if,
 			     &key);
-      hicn_face_ip_input_faces_t * in_faces_vec = hicn_face_ip4_get_vec(&(face_ip->local_addr.ip4), face->shared.sw_if,
-                                                                        &hicn_face_ip_local_hashtb);
+      hicn_face_ip_input_faces_t *in_faces_vec =
+	hicn_face_ip4_get_vec (&(face_ip->local_addr.ip4), face->shared.sw_if,
+			       &hicn_face_ip_local_hashtb);
       if (in_faces_vec != NULL)
-        {
-          hicn_face_ip_vec_t * vec = pool_elt_at_index (hicn_vec_pool, in_faces_vec->vec_id);
-          u32 index_face = vec_search(*vec, face_id);
-          vec_del1(*vec, index_face);
-
-          if (vec_len(*vec) == 0)
-            {
-              pool_put_index(hicn_vec_pool, in_faces_vec->vec_id);
-              mhash_unset (&hicn_face_ip_local_hashtb, &key, (uword *) & old_key);
-              vec_free(*vec);
-            }
-          else
-            {
-              /* Check if the face we are deleting is the preferred one. */
-              /* If so, repleace with another. */
-              if (in_faces_vec->face_id == face_id)
-                {
-                  in_faces_vec->face_id = (*vec)[0];
-                }
-            }
-          hicn_face_ip4_get_key (&(face_ip->remote_addr.ip4), face->shared.sw_if,
-                                 &key);
-          mhash_unset (&hicn_face_ip_remote_hashtb, &key, (uword *) & old_key2);
-        }
+	{
+	  hicn_face_ip_vec_t *vec =
+	    pool_elt_at_index (hicn_vec_pool, in_faces_vec->vec_id);
+	  u32 index_face = vec_search (*vec, face_id);
+	  vec_del1 (*vec, index_face);
+
+	  if (vec_len (*vec) == 0)
+	    {
+	      pool_put_index (hicn_vec_pool, in_faces_vec->vec_id);
+	      mhash_unset (&hicn_face_ip_local_hashtb, &key,
+			   (uword *) & old_key);
+	      vec_free (*vec);
+	    }
+	  else
+	    {
+	      /* Check if the face we are deleting is the preferred one. */
+	      /* If so, repleace with another. */
+	      if (in_faces_vec->face_id == face_id)
+		{
+		  in_faces_vec->face_id = (*vec)[0];
+		}
+	    }
+	  hicn_face_ip4_get_key (&(face_ip->remote_addr.ip4),
+				 face->shared.sw_if, &key);
+	  mhash_unset (&hicn_face_ip_remote_hashtb, &key,
+		       (uword *) & old_key2);
+	}
     }
   else
     {
       hicn_face_ip6_get_key (&(face_ip->local_addr.ip6), face->shared.sw_if,
 			     &key);
 
-      hicn_face_ip_input_faces_t * in_faces_vec = hicn_face_ip6_get_vec(&(face_ip->local_addr.ip6), face->shared.sw_if,
-                                                                      &hicn_face_ip_local_hashtb);
+      hicn_face_ip_input_faces_t *in_faces_vec =
+	hicn_face_ip6_get_vec (&(face_ip->local_addr.ip6), face->shared.sw_if,
+			       &hicn_face_ip_local_hashtb);
       if (in_faces_vec != NULL)
-        {
-          hicn_face_ip_vec_t * vec = pool_elt_at_index (hicn_vec_pool, in_faces_vec->vec_id);
-          u32 index_face = vec_search(*vec, face_id);
-          vec_del1(*vec, index_face);
-
-          if (vec_len(*vec) == 0)
-            {
-              pool_put(hicn_vec_pool, vec);
-              mhash_unset (&hicn_face_ip_local_hashtb, &key, (uword *) & old_key);
-              vec_free(*vec);
-            }
-          else
-            {
-              /* Check if the face we are deleting is the preferred one. */
-              /* If so, repleace with another. */
-              if (in_faces_vec->face_id == face_id)
-                {
-                  in_faces_vec->face_id = (*vec)[0];
-                }
-            }
-          hicn_face_ip6_get_key (&(face_ip->remote_addr.ip6), face->shared.sw_if,
-                                 &key);
-          mhash_unset (&hicn_face_ip_remote_hashtb, &key, (uword *) & old_key);
-        }
+	{
+	  hicn_face_ip_vec_t *vec =
+	    pool_elt_at_index (hicn_vec_pool, in_faces_vec->vec_id);
+	  u32 index_face = vec_search (*vec, face_id);
+	  vec_del1 (*vec, index_face);
+
+	  if (vec_len (*vec) == 0)
+	    {
+	      pool_put (hicn_vec_pool, vec);
+	      mhash_unset (&hicn_face_ip_local_hashtb, &key,
+			   (uword *) & old_key);
+	      vec_free (*vec);
+	    }
+	  else
+	    {
+	      /* Check if the face we are deleting is the preferred one. */
+	      /* If so, repleace with another. */
+	      if (in_faces_vec->face_id == face_id)
+		{
+		  in_faces_vec->face_id = (*vec)[0];
+		}
+	    }
+	  hicn_face_ip6_get_key (&(face_ip->remote_addr.ip6),
+				 face->shared.sw_if, &key);
+	  mhash_unset (&hicn_face_ip_remote_hashtb, &key,
+		       (uword *) & old_key);
+	}
     }
   return hicn_face_del (face_id);
 }
@@ -171,17 +167,18 @@ hicn_face_ip_del (hicn_face_id_t face_id)
 /**
  * @brief Helper for handling midchain adjacencies
  */
-void face_midchain_fixup_t (vlib_main_t * vm,
-                            const struct ip_adjacency_t_ * adj,
-                            vlib_buffer_t * b0,
-                            const void *data) {
+void
+face_midchain_fixup_t (vlib_main_t * vm,
+		       const struct ip_adjacency_t_ *adj,
+		       vlib_buffer_t * b0, const void *data)
+{
   vnet_buffer (b0)->sw_if_index[VLIB_TX] = 0;
 };
 
 /**
  * @brief Build a rewrite string for the face.
  */
-static u8*
+static u8 *
 face_build_rewrite_i (void)
 {
   /*
@@ -192,51 +189,56 @@ face_build_rewrite_i (void)
    */
   u8 *rewrite = NULL;
 
-  vec_validate(rewrite, 0);
-  vec_reset_length(rewrite);
+  vec_validate (rewrite, 0);
+  vec_reset_length (rewrite);
 
   return (rewrite);
 }
 
 always_inline int
 hicn_face_ip_find_adj (const ip46_address_t * remote_addr,
-                       int sw_if, adj_index_t * adj)
+		       int sw_if, adj_index_t * adj)
 {
   fib_prefix_t fib_pfx;
   fib_node_index_t fib_entry_index;
   fib_prefix_from_ip46_addr (remote_addr, &fib_pfx);
-  fib_pfx.fp_len = ip46_address_is_ip4(remote_addr)? 32 : 128;
-  vnet_link_t link_type = ip46_address_is_ip4(&fib_pfx.fp_addr)? VNET_LINK_IP4 : VNET_LINK_IP6;
-  *adj = adj_nbr_find(fib_pfx.fp_proto, link_type, &fib_pfx.fp_addr, sw_if);
+  fib_pfx.fp_len = ip46_address_is_ip4 (remote_addr) ? 32 : 128;
+  vnet_link_t link_type =
+    ip46_address_is_ip4 (&fib_pfx.fp_addr) ? VNET_LINK_IP4 : VNET_LINK_IP6;
+  *adj = adj_nbr_find (fib_pfx.fp_proto, link_type, &fib_pfx.fp_addr, sw_if);
 
   if (*adj == ADJ_INDEX_INVALID)
     {
       u32 fib_index = fib_table_find_or_create_and_lock (fib_pfx.fp_proto,
-                                                         HICN_FIB_TABLE,
-                                                         FIB_SOURCE_PRIORITY_HI);
+							 HICN_FIB_TABLE,
+							 FIB_SOURCE_PRIORITY_HI);
 
       fib_entry_index = fib_table_lookup (fib_index, &fib_pfx);
 
       if (fib_entry_index == (FIB_NODE_INDEX_INVALID))
-        return HICN_ERROR_FACE_IP_ADJ_NOT_FOUND;
+	return HICN_ERROR_FACE_IP_ADJ_NOT_FOUND;
 
       *adj = fib_entry_get_adj (fib_entry_index);
-      ip_adjacency_t * temp = NULL;
+      ip_adjacency_t *temp = NULL;
       if (*adj != ~0)
-        temp = adj_get(*adj);
+	temp = adj_get (*adj);
 
       if (temp == NULL || temp->lookup_next_index <= IP_LOOKUP_NEXT_MIDCHAIN)
-        {
-          if(sw_if != ~0)
-            *adj = adj_nbr_add_or_lock(fib_pfx.fp_proto, link_type, remote_addr, sw_if);
-          else
-            return HICN_ERROR_FACE_IP_ADJ_NOT_FOUND;
-        }
+	{
+	  if (sw_if != ~0)
+	    *adj =
+	      adj_nbr_add_or_lock (fib_pfx.fp_proto, link_type, remote_addr,
+				   sw_if);
+	  else
+	    return HICN_ERROR_FACE_IP_ADJ_NOT_FOUND;
+	}
       else
-        {
-          adj_nbr_midchain_update_rewrite(*adj, &face_midchain_fixup_t, NULL, ADJ_FLAG_NONE, face_build_rewrite_i());
-          adj_midchain_delegate_stack(*adj, fib_index, &fib_pfx);
-        }
+	{
+	  adj_nbr_midchain_update_rewrite (*adj, &face_midchain_fixup_t, NULL,
+					   ADJ_FLAG_NONE,
+					   face_build_rewrite_i ());
+	  adj_midchain_delegate_stack (*adj, fib_index, &fib_pfx);
+	}
     }
 
   return HICN_ERROR_NONE;
@@ -249,8 +251,7 @@ hicn_face_ip_find_adj (const ip46_address_t * remote_addr,
 int
 hicn_face_ip_add (const ip46_address_t * local_addr,
 		  const ip46_address_t * remote_addr,
-		  int sw_if, hicn_face_id_t * pfaceid,
-                  u8 is_app_prod)
+		  int sw_if, hicn_face_id_t * pfaceid, u8 is_app_prod)
 {
   dpo_proto_t dpo_proto;
 
@@ -280,78 +281,83 @@ hicn_face_ip_add (const ip46_address_t * local_addr,
 	}
 
       if (!(face->shared.flags & HICN_FACE_FLAGS_IFACE))
-        return HICN_ERROR_FACE_ALREADY_CREATED;
+	return HICN_ERROR_FACE_ALREADY_CREATED;
 
       hicn_face_ip_key_t key;
       hicn_face_ip4_get_key (&(local_addr->ip4), sw_if, &key);
 
-      hicn_face_ip_input_faces_t * in_faces =
+      hicn_face_ip_input_faces_t *in_faces =
 	hicn_face_ip4_get_vec (&(local_addr->ip4), sw_if,
-                               &hicn_face_ip_local_hashtb);
+			       &hicn_face_ip_local_hashtb);
 
       if (in_faces == NULL)
-        {
-          adj_index_t adj;
-          int ret = hicn_face_ip_find_adj(remote_addr, sw_if, &adj);
-          if (ret != HICN_ERROR_NONE)
-            return ret;
-
-          hicn_face_ip_input_faces_t in_faces_temp;
-          hicn_face_ip_vec_t *vec;
-          pool_get(hicn_vec_pool, vec);
-          *vec = vec_new(hicn_face_ip_vec_t, 0);
-          u32 index = vec - hicn_vec_pool;
-          in_faces_temp.vec_id = index;
-          vec_add1(*vec, *pfaceid);
-
-          hicn_face_ip_t *ip_face = (hicn_face_ip_t *) face->data;
-          clib_memcpy (&ip_face->local_addr, local_addr, sizeof (ip4_address_t));
-          clib_memcpy (&ip_face->remote_addr, remote_addr,
-                       sizeof (ip4_address_t));
-          face->shared.sw_if = sw_if;
-          face->shared.flags = flags;
-          face->shared.adj = adj;
-
-          dpo_proto = DPO_PROTO_IP4;
-
-          in_faces_temp.face_id = *pfaceid;
-
-          mhash_set_mem (&hicn_face_ip_local_hashtb, &key, (uword *) &in_faces_temp, 0);
-        }
+	{
+	  adj_index_t adj;
+	  int ret = hicn_face_ip_find_adj (remote_addr, sw_if, &adj);
+	  if (ret != HICN_ERROR_NONE)
+	    return ret;
+
+	  hicn_face_ip_input_faces_t in_faces_temp;
+	  hicn_face_ip_vec_t *vec;
+	  pool_get (hicn_vec_pool, vec);
+	  *vec = vec_new (hicn_face_ip_vec_t, 0);
+	  u32 index = vec - hicn_vec_pool;
+	  in_faces_temp.vec_id = index;
+	  vec_add1 (*vec, *pfaceid);
+
+	  hicn_face_ip_t *ip_face = (hicn_face_ip_t *) face->data;
+	  clib_memcpy (&ip_face->local_addr, local_addr,
+		       sizeof (ip4_address_t));
+	  clib_memcpy (&ip_face->remote_addr, remote_addr,
+		       sizeof (ip4_address_t));
+	  face->shared.sw_if = sw_if;
+	  face->shared.flags = flags;
+	  face->shared.adj = adj;
+
+	  dpo_proto = DPO_PROTO_IP4;
+
+	  in_faces_temp.face_id = *pfaceid;
+
+	  mhash_set_mem (&hicn_face_ip_local_hashtb, &key,
+			 (uword *) & in_faces_temp, 0);
+	}
       else
-        {
-          hicn_face_ip_vec_t * vec = pool_elt_at_index(hicn_vec_pool, in_faces->vec_id);
-
-          /* */
-          if (vec_search(*vec, *pfaceid) != ~0)
-            return HICN_ERROR_FACE_ALREADY_CREATED;
-
-          adj_index_t adj;
-          int ret = hicn_face_ip_find_adj(remote_addr, sw_if, &adj);
-          if (ret != HICN_ERROR_NONE)
-            return ret;
-
-          vec_add1(*vec, *pfaceid);
-
-          hicn_face_ip_t *ip_face = (hicn_face_ip_t *) face->data;
-          clib_memcpy (&ip_face->local_addr, local_addr, sizeof (ip4_address_t));
-          clib_memcpy (&ip_face->remote_addr, remote_addr,
-                       sizeof (ip4_address_t));
-          face->shared.sw_if = sw_if;
-          face->shared.flags = flags;
-          face->shared.adj = adj;
-
-          dpo_proto = DPO_PROTO_IP4;
-
-          mhash_set_mem (&hicn_face_ip_local_hashtb, &key, (uword *) in_faces, 0);
-
-          /* If the face is an application producer face, we set it as the preferred incoming face. */
-          /* This is required to handle the CS separation, and the push api in a lightway*/
-          if (is_app_prod)
-            {
-              in_faces->face_id = *pfaceid;
-            }
-        }
+	{
+	  hicn_face_ip_vec_t *vec =
+	    pool_elt_at_index (hicn_vec_pool, in_faces->vec_id);
+
+	  /* */
+	  if (vec_search (*vec, *pfaceid) != ~0)
+	    return HICN_ERROR_FACE_ALREADY_CREATED;
+
+	  adj_index_t adj;
+	  int ret = hicn_face_ip_find_adj (remote_addr, sw_if, &adj);
+	  if (ret != HICN_ERROR_NONE)
+	    return ret;
+
+	  vec_add1 (*vec, *pfaceid);
+
+	  hicn_face_ip_t *ip_face = (hicn_face_ip_t *) face->data;
+	  clib_memcpy (&ip_face->local_addr, local_addr,
+		       sizeof (ip4_address_t));
+	  clib_memcpy (&ip_face->remote_addr, remote_addr,
+		       sizeof (ip4_address_t));
+	  face->shared.sw_if = sw_if;
+	  face->shared.flags = flags;
+	  face->shared.adj = adj;
+
+	  dpo_proto = DPO_PROTO_IP4;
+
+	  mhash_set_mem (&hicn_face_ip_local_hashtb, &key, (uword *) in_faces,
+			 0);
+
+	  /* If the face is an application producer face, we set it as the preferred incoming face. */
+	  /* This is required to handle the CS separation, and the push api in a lightway */
+	  if (is_app_prod)
+	    {
+	      in_faces->face_id = *pfaceid;
+	    }
+	}
     }
   else
     {
@@ -371,83 +377,87 @@ hicn_face_ip_add (const ip46_address_t * local_addr,
 	}
 
       if (!(face->shared.flags & HICN_FACE_FLAGS_IFACE))
-        return HICN_ERROR_FACE_ALREADY_CREATED;
+	return HICN_ERROR_FACE_ALREADY_CREATED;
 
       hicn_face_ip_key_t key;
       hicn_face_ip6_get_key (&(local_addr->ip6), sw_if, &key);
 
-      hicn_face_ip_input_faces_t * in_faces =
+      hicn_face_ip_input_faces_t *in_faces =
 	hicn_face_ip6_get_vec (&(local_addr->ip6), sw_if,
-                               &hicn_face_ip_local_hashtb);
+			       &hicn_face_ip_local_hashtb);
 
       if (in_faces == NULL)
-        {
-          adj_index_t adj;
-          int ret = hicn_face_ip_find_adj(remote_addr, sw_if, &adj);
-          if (ret != HICN_ERROR_NONE)
-            return ret;
-
-          hicn_face_ip_input_faces_t in_faces_temp;
-          hicn_face_ip_vec_t *vec;
-          pool_get(hicn_vec_pool, vec);
-          vec_alloc(*vec, 1);
-          u32 index = vec - hicn_vec_pool;
-          in_faces_temp.vec_id = index;
-          vec_add1(*vec, *pfaceid);
-
-          hicn_face_ip_t *ip_face = (hicn_face_ip_t *) face->data;
-          clib_memcpy (&ip_face->local_addr, local_addr, sizeof (ip6_address_t));
-          clib_memcpy (&ip_face->remote_addr, remote_addr,
-                       sizeof (ip6_address_t));
-          face->shared.sw_if = sw_if;
-          face->shared.flags = flags;
-          face->shared.adj = adj;
-
-          dpo_proto = DPO_PROTO_IP6;
-
-          in_faces_temp.face_id = *pfaceid;
-
-          mhash_set_mem (&hicn_face_ip_local_hashtb, &key, (uword *) &in_faces_temp, 0);
-        }
+	{
+	  adj_index_t adj;
+	  int ret = hicn_face_ip_find_adj (remote_addr, sw_if, &adj);
+	  if (ret != HICN_ERROR_NONE)
+	    return ret;
+
+	  hicn_face_ip_input_faces_t in_faces_temp;
+	  hicn_face_ip_vec_t *vec;
+	  pool_get (hicn_vec_pool, vec);
+	  vec_alloc (*vec, 1);
+	  u32 index = vec - hicn_vec_pool;
+	  in_faces_temp.vec_id = index;
+	  vec_add1 (*vec, *pfaceid);
+
+	  hicn_face_ip_t *ip_face = (hicn_face_ip_t *) face->data;
+	  clib_memcpy (&ip_face->local_addr, local_addr,
+		       sizeof (ip6_address_t));
+	  clib_memcpy (&ip_face->remote_addr, remote_addr,
+		       sizeof (ip6_address_t));
+	  face->shared.sw_if = sw_if;
+	  face->shared.flags = flags;
+	  face->shared.adj = adj;
+
+	  dpo_proto = DPO_PROTO_IP6;
+
+	  in_faces_temp.face_id = *pfaceid;
+
+	  mhash_set_mem (&hicn_face_ip_local_hashtb, &key,
+			 (uword *) & in_faces_temp, 0);
+	}
       else
-        {
-          hicn_face_ip_vec_t *vec = pool_elt_at_index(hicn_vec_pool, in_faces->vec_id);
-
-          /* */
-          if (vec_search(*vec, *pfaceid) != ~0)
-            return HICN_ERROR_FACE_ALREADY_CREATED;
-
-          adj_index_t adj;
-          int ret = hicn_face_ip_find_adj(remote_addr, sw_if, &adj);
-          if (ret != HICN_ERROR_NONE)
-            return ret;
-
-          vec_add1(*vec, *pfaceid);
-
-          hicn_face_ip_t *ip_face = (hicn_face_ip_t *) face->data;
-          clib_memcpy (&ip_face->local_addr, local_addr, sizeof (ip6_address_t));
-          clib_memcpy (&ip_face->remote_addr, remote_addr,
-                       sizeof (ip6_address_t));
-          face->shared.sw_if = sw_if;
-          face->shared.flags = flags;
-          face->shared.adj = adj;
-
-          dpo_proto = DPO_PROTO_IP6;
-
-          mhash_set_mem (&hicn_face_ip_local_hashtb, &key, (uword *) in_faces, 0);
-
-          /* If the face is an application producer face, we set it as the preferred incoming face. */
-          /* This is required to handle the CS separation, and the push api in a lightway*/
-          if (is_app_prod)
-            {
-              in_faces->face_id = *pfaceid;
-            }
-        }
+	{
+	  hicn_face_ip_vec_t *vec =
+	    pool_elt_at_index (hicn_vec_pool, in_faces->vec_id);
+
+	  /* */
+	  if (vec_search (*vec, *pfaceid) != ~0)
+	    return HICN_ERROR_FACE_ALREADY_CREATED;
+
+	  adj_index_t adj;
+	  int ret = hicn_face_ip_find_adj (remote_addr, sw_if, &adj);
+	  if (ret != HICN_ERROR_NONE)
+	    return ret;
+
+	  vec_add1 (*vec, *pfaceid);
+
+	  hicn_face_ip_t *ip_face = (hicn_face_ip_t *) face->data;
+	  clib_memcpy (&ip_face->local_addr, local_addr,
+		       sizeof (ip6_address_t));
+	  clib_memcpy (&ip_face->remote_addr, remote_addr,
+		       sizeof (ip6_address_t));
+	  face->shared.sw_if = sw_if;
+	  face->shared.flags = flags;
+	  face->shared.adj = adj;
+
+	  dpo_proto = DPO_PROTO_IP6;
+
+	  mhash_set_mem (&hicn_face_ip_local_hashtb, &key, (uword *) in_faces,
+			 0);
+
+	  /* If the face is an application producer face, we set it as the preferred incoming face. */
+	  /* This is required to handle the CS separation, and the push api in a lightway */
+	  if (is_app_prod)
+	    {
+	      in_faces->face_id = *pfaceid;
+	    }
+	}
     }
 
   retx_t *retx = vlib_process_signal_event_data (vlib_get_main (),
-						 hicn_mapme_eventmgr_process_node.
-						 index,
+						 hicn_mapme_eventmgr_process_node.index,
 						 HICN_MAPME_EVENT_FACE_ADD, 1,
 						 sizeof (retx_t));
 
diff --git a/hicn-plugin/src/faces/udp/face_udp.c b/hicn-plugin/src/faces/udp/face_udp.c
index e2fa3227b..e610cbd14 100644
--- a/hicn-plugin/src/faces/udp/face_udp.c
+++ b/hicn-plugin/src/faces/udp/face_udp.c
@@ -80,16 +80,11 @@ hicn_face_udp_init (vlib_main_t * vm)
 
   /* Default Strategy has index 0 and it always exists */
   strategy_face_udp4_vlib_edge = vlib_node_add_next (vm,
-						     hicn_dpo_get_strategy_vft
-						     (default_dpo.hicn_dpo_get_type
-						      ())->get_strategy_node_index
-						     (),
-						     hicn_face_udp4_output_node.index);
+						     hicn_strategy_node.index,
+						     hicn_face_udp4_output_node.
+						     index);
   strategy_face_udp6_vlib_edge =
-    vlib_node_add_next (vm,
-			hicn_dpo_get_strategy_vft
-			(default_dpo.hicn_dpo_get_type
-			 ())->get_strategy_node_index (),
+    vlib_node_add_next (vm, hicn_strategy_node.index,
 			hicn_face_udp6_output_node.index);
 
   /*
@@ -99,12 +94,10 @@ hicn_face_udp_init (vlib_main_t * vm)
   for (int i = 1; i < strategy_nodes_n; i++)
     {
       u32 temp_index4 = vlib_node_add_next (vm,
-					    hicn_dpo_get_strategy_vft_from_id
-					    (i)->get_strategy_node_index (),
+					    hicn_strategy_node.index,
 					    hicn_face_udp4_output_node.index);
       u32 temp_index6 = vlib_node_add_next (vm,
-					    hicn_dpo_get_strategy_vft_from_id
-					    (i)->get_strategy_node_index (),
+					    hicn_strategy_node.index,
 					    hicn_face_udp6_output_node.index);
       ASSERT (temp_index4 == strategy_face_udp4_vlib_edge);
       ASSERT (temp_index6 == strategy_face_udp6_vlib_edge);
@@ -269,7 +262,8 @@ hicn_face_udp_add (const ip46_address_t * local_addr,
     }
 
   retx_t *retx = vlib_process_signal_event_data (vlib_get_main (),
-						 hicn_mapme_eventmgr_process_node.index,
+						 hicn_mapme_eventmgr_process_node.
+						 index,
 						 HICN_MAPME_EVENT_FACE_ADD, 1,
 						 sizeof (retx_t));
   /* *INDENT-OFF* */
diff --git a/hicn-plugin/src/hashtb.c b/hicn-plugin/src/hashtb.c
index 5d41b7aa9..6deddbd84 100644
--- a/hicn-plugin/src/hashtb.c
+++ b/hicn-plugin/src/hashtb.c
@@ -270,7 +270,7 @@ hicn_hashtb_free (hicn_hashtb_h * ph)
 int
 hicn_hashtb_lookup_node (hicn_hashtb_h h, const u8 * key,
 			 u32 keylen, u64 hashval, u8 is_data,
-			 u32 * node_id, u8 * dpo_ctx_id, u8 * vft_id,
+			 u32 * node_id, index_t * dpo_ctx_id, u8 * vft_id,
 			 u8 * is_cs, u8 * hash_entry_id, u32 * bucket_id,
 			 u8 * bucket_is_overflow)
 {
@@ -295,7 +295,7 @@ int
 hicn_hashtb_lookup_node_ex (hicn_hashtb_h h, const u8 * key,
 			    u32 keylen, u64 hashval, u8 is_data,
 			    int include_deleted_p, u32 * node_id,
-			    u8 * dpo_ctx_id, u8 * vft_id, u8 * is_cs,
+			    index_t * dpo_ctx_id, u8 * vft_id, u8 * is_cs,
 			    u8 * hash_entry_id, u32 * bucket_id,
 			    u8 * bucket_is_overflow)
 {
@@ -423,7 +423,7 @@ int
 hicn_hashtb_insert (hicn_hashtb_h h, hicn_hash_node_t * node,
 		    hicn_hash_entry_t ** hash_entry, u64 hash,
 		    u32 * node_id,
-		    u8 * dpo_ctx_id, u8 * vft_id, u8 * is_cs,
+		    index_t * dpo_ctx_id, u8 * vft_id, u8 * is_cs,
 		    u8 * hash_entry_id, u32 * bucket_id,
 		    u8 * bucket_is_overflow)
 {
@@ -485,8 +485,8 @@ loop_buckets:
 	   * If we are doing lookup for a data, do not take a
 	   * lock in case of a hit with a CS entry
 	   */
-          if (!(*is_cs))
-            bucket->hb_entries[i].locks++;
+	  if (!(*is_cs))
+	    bucket->hb_entries[i].locks++;
 	  *bucket_is_overflow = is_overflow;
 	  ret = HICN_ERROR_HASHTB_EXIST;
 	  goto done;
diff --git a/hicn-plugin/src/hashtb.h b/hicn-plugin/src/hashtb.h
index b74e972b2..756f247b7 100644
--- a/hicn-plugin/src/hashtb.h
+++ b/hicn-plugin/src/hashtb.h
@@ -189,6 +189,9 @@ typedef struct __attribute__ ((packed)) hicn_hash_entry_s
    */
   u32 locks;
 
+  /* Index of dpo (4B) */
+  index_t dpo_ctx_id;
+
   /* A few flags, including 'this points to a chain of buckets' */
   u8 he_flags;
 
@@ -198,10 +201,10 @@ typedef struct __attribute__ ((packed)) hicn_hash_entry_s
    */
   u8 vft_id;
 
-  /* Index of dpo */
-  u8 dpo_ctx_id;
+} hicn_hash_entry_t;		//size 22B
+
+STATIC_ASSERT (sizeof (index_t) <= 4, "sizeof index_t is greater than 4B");
 
-} hicn_hash_entry_t;
 
 #define HICN_HASH_ENTRY_FLAGS_DEFAULT  0x00
 
@@ -231,13 +234,13 @@ typedef struct __attribute__ ((packed)) hicn_hash_entry_s
  * Overflow bucket ratio as a fraction of the fixed/configured count; a pool
  * of hash buckets used if a row in the fixed table overflows.
  */
-#define HICN_HASHTB_BUCKET_ENTRIES 6
+#define HICN_HASHTB_BUCKET_ENTRIES 5
 
 typedef struct __attribute__ ((packed))
 {
   hicn_hash_entry_t hb_entries[HICN_HASHTB_BUCKET_ENTRIES];
   u64 align1;
-  u32 align2;
+  u64 align2;
   u16 align3;
 } hicn_hash_bucket_t;
 
@@ -400,7 +403,7 @@ int
 hicn_hashtb_insert (hicn_hashtb_h h, hicn_hash_node_t * node,
 		    hicn_hash_entry_t ** hash_entry, u64 hash,
 		    u32 * node_id,
-		    u8 * dpo_ctx_id, u8 * vft_id, u8 * is_cs,
+		    index_t * dpo_ctx_id, u8 * vft_id, u8 * is_cs,
 		    u8 * hash_entry_id, u32 * bucket_id,
 		    u8 * bucket_is_overflow);
 
@@ -414,7 +417,7 @@ hicn_hashtb_insert (hicn_hashtb_h h, hicn_hash_node_t * node,
 int
 hicn_hashtb_lookup_node (hicn_hashtb_h h, const u8 * key,
 			 u32 keylen, u64 hashval, u8 is_data,
-			 u32 * node_id, u8 * dpo_ctx_id, u8 * vft_id,
+			 u32 * node_id, index_t * dpo_ctx_id, u8 * vft_id,
 			 u8 * is_cs, u8 * hash_entry_id, u32 * bucket_id,
 			 u8 * bucket_is_overflow);
 
@@ -432,7 +435,7 @@ int
 hicn_hashtb_lookup_node_ex (hicn_hashtb_h h, const u8 * key,
 			    u32 keylen, u64 hashval, u8 is_data,
 			    int include_deleted_p, u32 * node_id,
-			    u8 * dpo_ctx_id, u8 * vft_id, u8 * is_cs,
+			    index_t * dpo_ctx_id, u8 * vft_id, u8 * is_cs,
 			    u8 * hash_entry_id, u32 * bucket_id,
 			    u8 * bucket_is_overflow);
 
diff --git a/hicn-plugin/src/hicn_api.c b/hicn-plugin/src/hicn_api.c
index 4601ae316..5bdab4408 100644
--- a/hicn-plugin/src/hicn_api.c
+++ b/hicn-plugin/src/hicn_api.c
@@ -314,7 +314,7 @@ vl_api_hicn_api_face_add_t_handler (vl_api_hicn_api_face_add_t * mp)
 
   hicn_main_t *sm = &hicn_main;
   hicn_face_id_t face_id;
-  vl_api_hicn_face_type_t face_type = clib_net_to_host_u32(mp->type);
+  vl_api_hicn_face_type_t face_type = clib_net_to_host_u32 (mp->type);
 
   switch (face_type)
     {
@@ -436,12 +436,12 @@ send_faces_details (vl_api_registration_t * reg,
 
   if (face->shared.face_type == hicn_face_ip_type)
     {
-      mp->type = clib_host_to_net_u32(IP_FACE);
+      mp->type = clib_host_to_net_u32 (IP_FACE);
       send_face_ip_details (face, &(mp->face.ip));
     }
   else if (face->shared.face_type == hicn_face_udp_type)
     {
-      mp->type = clib_host_to_net_u32(UDP_FACE);
+      mp->type = clib_host_to_net_u32 (UDP_FACE);
       send_face_udp_details (face, &(mp->face.udp));
     }
 
@@ -651,7 +651,6 @@ static void vl_api_hicn_api_route_get_t_handler
   fib_prefix_t prefix;
   ip_prefix_decode (&mp->prefix, &prefix);
   const dpo_id_t *hicn_dpo_id;
-  const hicn_dpo_vft_t *hicn_dpo_vft;
   hicn_dpo_ctx_t *hicn_dpo_ctx;
   u32 fib_index;
 
@@ -662,8 +661,7 @@ static void vl_api_hicn_api_route_get_t_handler
     {
       if (rv == HICN_ERROR_NONE)
 	{
-	  hicn_dpo_vft = hicn_dpo_get_vft(hicn_dpo_id->dpoi_type);
-	  hicn_dpo_ctx = hicn_dpo_vft->hicn_dpo_get_ctx(hicn_dpo_id->dpoi_index);
+	  hicn_dpo_ctx = hicn_strategy_dpo_ctx_get(hicn_dpo_id->dpoi_index);
 	  for (int i = 0; hicn_dpo_ctx != NULL && i < hicn_dpo_ctx->entry_count; i++)
 	    {
 	      if (dpo_id_is_valid(&hicn_dpo_ctx->next_hops[i]))
@@ -687,11 +685,10 @@ send_route_details (vl_api_registration_t * reg,
   mp->_vl_msg_id = htons (VL_API_HICN_API_ROUTES_DETAILS + hm->msg_id_base);
   mp->context = context;
 
-  ip_prefix_encode(pfx, &mp->prefix);
+  ip_prefix_encode (pfx, &mp->prefix);
   mp->nfaces = 0;
 
   const dpo_id_t *hicn_dpo_id;
-  const hicn_dpo_vft_t *hicn_dpo_vft;
   hicn_dpo_ctx_t *hicn_dpo_ctx;
   u32 fib_index;
 
@@ -699,16 +696,16 @@ send_route_details (vl_api_registration_t * reg,
 
   if (rv == HICN_ERROR_NONE)
     {
-      hicn_dpo_vft = hicn_dpo_get_vft (hicn_dpo_id->dpoi_type);
-      hicn_dpo_ctx = hicn_dpo_vft->hicn_dpo_get_ctx (hicn_dpo_id->dpoi_index);
-      for (int i = 0; hicn_dpo_ctx != NULL && i < hicn_dpo_ctx->entry_count; i++)
+      hicn_dpo_ctx = hicn_strategy_dpo_ctx_get (hicn_dpo_id->dpoi_index);
+      for (int i = 0; hicn_dpo_ctx != NULL && i < hicn_dpo_ctx->entry_count;
+	   i++)
 	{
 	  if (dpo_id_is_valid (&hicn_dpo_ctx->next_hops[i]))
 	    {
 	      mp->faceids[i] =
 		clib_host_to_net_u32 (((dpo_id_t *) &
-				       hicn_dpo_ctx->
-				       next_hops[i])->dpoi_index);
+				       hicn_dpo_ctx->next_hops[i])->
+				      dpoi_index);
 	      mp->nfaces++;
 	    }
 	}
@@ -757,8 +754,7 @@ vl_api_hicn_api_route_dump_walk (fib_node_index_t fei, void *arg)
 }
 
 static void
-  vl_api_hicn_api_routes_dump_t_handler
-  (vl_api_hicn_api_routes_dump_t * mp)
+  vl_api_hicn_api_routes_dump_t_handler (vl_api_hicn_api_routes_dump_t * mp)
 {
   vl_api_registration_t *reg;
   fib_table_t *fib_table;
@@ -779,7 +775,8 @@ static void
 				       fib_table_walk (fib_table->ft_index,
 						       FIB_PROTOCOL_IP4,
 						       vl_api_hicn_api_route_dump_walk,
-						       &ctx);}
+						       &ctx);
+				       }
 		));
 
   pool_foreach (fib_table, im6->fibs, (
@@ -787,7 +784,8 @@ static void
 					fib_table_walk (fib_table->ft_index,
 							FIB_PROTOCOL_IP6,
 							vl_api_hicn_api_route_dump_walk,
-							&ctx);}
+							&ctx);
+					}
 		));
 
   vec_foreach (lfeip, ctx.feis)
@@ -841,9 +839,9 @@ static void vl_api_hicn_api_strategy_get_t_handler
     {
       if (rv == HICN_ERROR_NONE)
 	{
-	  const hicn_dpo_vft_t * hicn_dpo_vft =
-	    hicn_dpo_get_vft (strategy_id);
-	  hicn_dpo_vft->format_hicn_dpo (rmp->description, 0);}
+	  const hicn_strategy_vft_t * hicn_strategy_vft =
+	    hicn_dpo_get_strategy_vft (strategy_id);
+	  hicn_strategy_vft->hicn_format_strategy (rmp->description, 0);}
     }));
   /* *INDENT-ON* */
 }
diff --git a/hicn-plugin/src/interest_hitcs.h b/hicn-plugin/src/interest_hitcs.h
index 3588d4e08..c69564452 100644
--- a/hicn-plugin/src/interest_hitcs.h
+++ b/hicn-plugin/src/interest_hitcs.h
@@ -40,10 +40,10 @@ typedef struct
 
 typedef enum
 {
-  HICN_INTEREST_HITCS_NEXT_V4_LOOKUP,
-  HICN_INTEREST_HITCS_NEXT_V6_LOOKUP,
+  HICN_INTEREST_HITCS_NEXT_STRATEGY,
   HICN_INTEREST_HITCS_NEXT_PUSH,
   HICN_INTEREST_HITCS_NEXT_ERROR_DROP,
+  HICN_INTEREST_HITCS_NEXT_EMPTY,
   HICN_INTEREST_HITCS_N_NEXT,
 } hicn_interest_hitcs_next_t;
 
diff --git a/hicn-plugin/src/interest_hitcs_node.c b/hicn-plugin/src/interest_hitcs_node.c
index 14f512897..d10f15afa 100644
--- a/hicn-plugin/src/interest_hitcs_node.c
+++ b/hicn-plugin/src/interest_hitcs_node.c
@@ -172,9 +172,7 @@ hicn_interest_hitcs_node_fn (vlib_main_t * vm, vlib_node_runtime_t * node,
 			       dpo_vft0, &hicn_dpo_id0);
 	      stats.cs_expired_count++;
 	      /* Forward interest to the strategy node */
-	      next0 =
-		isv6 ? HICN_INTEREST_HITCS_NEXT_V6_LOOKUP :
-		HICN_INTEREST_HITCS_NEXT_V4_LOOKUP;
+	      next0 = HICN_INTEREST_HITCS_NEXT_STRATEGY;
 	    }
 	  else
 	    {
@@ -278,10 +276,10 @@ VLIB_REGISTER_NODE(hicn_interest_hitcs_node) =
   /* edit / add dispositions here */
   .next_nodes =
   {
-    [HICN_INTEREST_HITCS_NEXT_V4_LOOKUP] = "ip4-lookup",
-    [HICN_INTEREST_HITCS_NEXT_V6_LOOKUP] = "ip6-lookup",
+    [HICN_INTEREST_HITCS_NEXT_STRATEGY] = "hicn-strategy",
     [HICN_INTEREST_HITCS_NEXT_PUSH] = "hicn-data-push",
     [HICN_INTEREST_HITCS_NEXT_ERROR_DROP] = "error-drop",
+    [HICN_INTEREST_HITCS_NEXT_EMPTY] = "ip6-lookup"
   },
 };
 /* *INDENT-ON* */
diff --git a/hicn-plugin/src/interest_hitpit.h b/hicn-plugin/src/interest_hitpit.h
index 28427d342..fc4cfc3ea 100644
--- a/hicn-plugin/src/interest_hitpit.h
+++ b/hicn-plugin/src/interest_hitpit.h
@@ -41,8 +41,7 @@ typedef struct
 typedef enum
 {
   HICN_INTEREST_HITPIT_NEXT_INTEREST_HITCS,
-  HICN_INTEREST_HITPIT_NEXT_IP4_LOOKUP,
-  HICN_INTEREST_HITPIT_NEXT_IP6_LOOKUP,
+  HICN_INTEREST_HITPIT_NEXT_STRATEGY,
   HICN_INTEREST_HITPIT_NEXT_ERROR_DROP,
   HICN_INTEREST_HITPIT_N_NEXT,
 } hicn_interest_hitpit_next_t;
diff --git a/hicn-plugin/src/interest_hitpit_node.c b/hicn-plugin/src/interest_hitpit_node.c
index d5eeb20dd..a346dcc7e 100644
--- a/hicn-plugin/src/interest_hitpit_node.c
+++ b/hicn-plugin/src/interest_hitpit_node.c
@@ -150,9 +150,7 @@ hicn_interest_hitpit_node_fn (vlib_main_t * vm, vlib_node_runtime_t * node,
 	      hicn_pcs_delete (rt->pitcs, &pitp, &node0, vm, hash_entry0,
 			       dpo_vft0, &hicn_dpo_id0);
 	      stats.pit_expired_count++;
-	      next0 =
-		isv6 ? HICN_INTEREST_HITPIT_NEXT_IP6_LOOKUP :
-		HICN_INTEREST_HITPIT_NEXT_IP4_LOOKUP;
+	      next0 = HICN_INTEREST_HITPIT_NEXT_STRATEGY;
 	    }
 	  else
 	    {
@@ -294,8 +292,7 @@ VLIB_REGISTER_NODE(hicn_interest_hitpit_node) =
   .next_nodes =
   {
     [HICN_INTEREST_HITPIT_NEXT_INTEREST_HITCS] = "hicn-interest-hitcs",
-    [HICN_INTEREST_HITPIT_NEXT_IP4_LOOKUP] = "ip4-lookup",
-    [HICN_INTEREST_HITPIT_NEXT_IP6_LOOKUP] = "ip6-lookup",
+    [HICN_INTEREST_HITPIT_NEXT_STRATEGY] = "hicn-strategy",
     [HICN_INTEREST_HITPIT_NEXT_ERROR_DROP] = "error-drop",
   },
 };
diff --git a/hicn-plugin/src/interest_pcslookup.h b/hicn-plugin/src/interest_pcslookup.h
index e27673a9e..5a5a6a7a8 100644
--- a/hicn-plugin/src/interest_pcslookup.h
+++ b/hicn-plugin/src/interest_pcslookup.h
@@ -40,8 +40,7 @@ typedef struct
 
 typedef enum
 {
-  HICN_INTEREST_PCSLOOKUP_NEXT_V4_LOOKUP,
-  HICN_INTEREST_PCSLOOKUP_NEXT_V6_LOOKUP,
+  HICN_INTEREST_PCSLOOKUP_NEXT_STRATEGY,
   HICN_INTEREST_PCSLOOKUP_NEXT_INTEREST_HITPIT,
   HICN_INTEREST_PCSLOOKUP_NEXT_INTEREST_HITCS,
   HICN_INTEREST_PCSLOOKUP_NEXT_ERROR_DROP,
diff --git a/hicn-plugin/src/interest_pcslookup_node.c b/hicn-plugin/src/interest_pcslookup_node.c
index 40d62510b..6ac2aa3a0 100644
--- a/hicn-plugin/src/interest_pcslookup_node.c
+++ b/hicn-plugin/src/interest_pcslookup_node.c
@@ -85,7 +85,7 @@ hicn_interest_pcslookup_node_fn (vlib_main_t * vm, vlib_node_runtime_t * node,
 	  hicn_name_t name;
 	  hicn_header_t *hicn0;
 	  u32 node_id0 = 0;
-	  u8 dpo_ctx_id0 = 0;
+	  index_t dpo_ctx_id0 = 0;
 	  u8 vft_id0 = 0;
 	  u8 is_cs0 = 0;
 	  u8 hash_entry_id = 0;
@@ -113,9 +113,7 @@ hicn_interest_pcslookup_node_fn (vlib_main_t * vm, vlib_node_runtime_t * node,
 
 	  if (PREDICT_TRUE (ret == HICN_ERROR_NONE))
 	    {
-	      next0 =
-		isv6 ? HICN_INTEREST_PCSLOOKUP_NEXT_V6_LOOKUP :
-		HICN_INTEREST_PCSLOOKUP_NEXT_V4_LOOKUP;
+	      next0 = HICN_INTEREST_PCSLOOKUP_NEXT_STRATEGY;
 	    }
 	  nameptr = (u8 *) (&name);
 	  stats.pkts_processed++;
@@ -224,8 +222,7 @@ VLIB_REGISTER_NODE(hicn_interest_pcslookup_node) =
   .n_next_nodes = HICN_INTEREST_PCSLOOKUP_N_NEXT,
   .next_nodes =
   {
-    [HICN_INTEREST_PCSLOOKUP_NEXT_V4_LOOKUP] = "ip4-lookup",
-    [HICN_INTEREST_PCSLOOKUP_NEXT_V6_LOOKUP] = "ip6-lookup",
+    [HICN_INTEREST_PCSLOOKUP_NEXT_STRATEGY] = "hicn-strategy",
     [HICN_INTEREST_PCSLOOKUP_NEXT_INTEREST_HITPIT] = "hicn-interest-hitpit",
     [HICN_INTEREST_PCSLOOKUP_NEXT_INTEREST_HITCS] = "hicn-interest-hitcs",
     [HICN_INTEREST_PCSLOOKUP_NEXT_ERROR_DROP] = "error-drop",
diff --git a/hicn-plugin/src/mapme_ack_node.c b/hicn-plugin/src/mapme_ack_node.c
index ebb12a124..557fb0ad7 100644
--- a/hicn-plugin/src/mapme_ack_node.c
+++ b/hicn-plugin/src/mapme_ack_node.c
@@ -79,9 +79,8 @@ hicn_mapme_process_ack (vlib_main_t * vm, vlib_buffer_t * b,
   /* We are only expecting ACKs for hICN DPOs */
   ASSERT (dpo_is_hicn (dpo));
 
-  const hicn_dpo_vft_t *dpo_vft = hicn_dpo_get_vft (dpo->dpoi_type);
   hicn_mapme_tfib_t *tfib =
-    TFIB (dpo_vft->hicn_dpo_get_ctx (dpo->dpoi_index));
+    TFIB (hicn_strategy_dpo_ctx_get (dpo->dpoi_index));
 
   if (tfib == NULL)
     {
@@ -107,11 +106,12 @@ hicn_mapme_process_ack (vlib_main_t * vm, vlib_buffer_t * b,
    * Is the ingress face in TFIB ? if so, remove it, otherwise it might be a
    * duplicate
    */
-  retx_t *retx =
-    vlib_process_signal_event_data (vm,
-				    hicn_mapme_eventmgr_process_node.index,
-				    HICN_MAPME_EVENT_FACE_PH_DEL, 1,
-				    sizeof (retx_t));
+  retx_t *retx = vlib_process_signal_event_data (vm,
+						 hicn_mapme_eventmgr_process_node.
+						 index,
+						 HICN_MAPME_EVENT_FACE_PH_DEL,
+						 1,
+						 sizeof (retx_t));
   *retx = (retx_t)
   {
   .prefix = prefix,.dpo = *dpo};
diff --git a/hicn-plugin/src/mapme_ctrl_node.c b/hicn-plugin/src/mapme_ctrl_node.c
index cef3d0944..ed25a31b0 100644
--- a/hicn-plugin/src/mapme_ctrl_node.c
+++ b/hicn-plugin/src/mapme_ctrl_node.c
@@ -27,6 +27,7 @@
 #include "parser.h"
 #include "infra.h"
 #include "strategy_dpo_manager.h"
+#include "strategy_dpo_ctx.h"
 #include "error.h"
 #include "state.h"
 
@@ -93,7 +94,7 @@ hicn_mapme_process_ctrl (vlib_main_t * vm, vlib_buffer_t * b,
   /* if (params.seq == INVALID_SEQ) */
   /*   { */
   /*     vlib_log_warn (mapme_main.log_class, */
-  /*       	     "Invalid sequence number found in IU"); */
+  /*                 "Invalid sequence number found in IU"); */
 
   /*     return true; */
   /*   } */
@@ -129,9 +130,8 @@ hicn_mapme_process_ctrl (vlib_main_t * vm, vlib_buffer_t * b,
 #endif
 
   /* Process the hICN DPO */
-  const hicn_dpo_vft_t *dpo_vft = hicn_dpo_get_vft (dpo->dpoi_type);
   hicn_mapme_tfib_t *tfib =
-    TFIB (dpo_vft->hicn_dpo_get_ctx (dpo->dpoi_index));
+    TFIB (hicn_strategy_dpo_ctx_get (dpo->dpoi_index));
 
   if (tfib == NULL)
     {
@@ -163,7 +163,9 @@ hicn_mapme_process_ctrl (vlib_main_t * vm, vlib_buffer_t * b,
 	      tfib->entry_count = 0;
 	      break;
 	    }
-	  DEBUG ("Adding nexthop to the tfib, dpo index in_face %d, dpo index tfib %d", in_face->dpoi_index, tfib->next_hops[pos].dpoi_index);
+	  DEBUG
+	    ("Adding nexthop to the tfib, dpo index in_face %d, dpo index tfib %d",
+	     in_face->dpoi_index, tfib->next_hops[pos].dpoi_index);
 	  hicn_mapme_tfib_add (tfib, &tfib->next_hops[pos]);
 	}
 
@@ -173,7 +175,8 @@ hicn_mapme_process_ctrl (vlib_main_t * vm, vlib_buffer_t * b,
 
       /* We transmit both the prefix and the full dpo (type will be needed to pick the right transmit node */
       retx_t *retx = vlib_process_signal_event_data (vm,
-						     hicn_mapme_eventmgr_process_node.index,
+						     hicn_mapme_eventmgr_process_node.
+						     index,
 						     HICN_MAPME_EVENT_FACE_NH_SET,
 						     1,
 						     sizeof (retx_t));
@@ -195,7 +198,8 @@ hicn_mapme_process_ctrl (vlib_main_t * vm, vlib_buffer_t * b,
 
       /* Multipath, multihoming, multiple producers or duplicate interest */
       retx_t *retx = vlib_process_signal_event_data (vm,
-						     hicn_mapme_eventmgr_process_node.index,
+						     hicn_mapme_eventmgr_process_node.
+						     index,
 						     HICN_MAPME_EVENT_FACE_NH_ADD,
 						     1,
 						     sizeof (retx_t));
@@ -212,7 +216,8 @@ hicn_mapme_process_ctrl (vlib_main_t * vm, vlib_buffer_t * b,
       hicn_mapme_tfib_add (tfib, in_face);
 
       retx_t *retx = vlib_process_signal_event_data (vm,
-						     hicn_mapme_eventmgr_process_node.index,
+						     hicn_mapme_eventmgr_process_node.
+						     index,
 						     HICN_MAPME_EVENT_FACE_PH_ADD,
 						     1,
 						     sizeof (retx_t));
@@ -277,7 +282,7 @@ hicn_mapme_ctrl_node_fn (vlib_main_t * vm, vlib_node_runtime_t * node,
 	  preprocess_in_face (hb->type, &hb->face_dpo_id, &in_face);
 	  hicn_mapme_process_ctrl (vm, b0, &in_face);
 
-          vnet_buffer (b0)->ip.adj_index[VLIB_TX] = in_face.dpoi_index;
+	  vnet_buffer (b0)->ip.adj_index[VLIB_TX] = in_face.dpoi_index;
 
 	  vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next,
 					   n_left_to_next, bi0, next0);
diff --git a/hicn-plugin/src/mapme_eventmgr.c b/hicn-plugin/src/mapme_eventmgr.c
index ef73f9550..5a9e7967e 100644
--- a/hicn-plugin/src/mapme_eventmgr.c
+++ b/hicn-plugin/src/mapme_eventmgr.c
@@ -261,12 +261,11 @@ hicn_mapme_send_message (vlib_main_t * vm, const hicn_prefix_t * prefix,
   vlib_node_t *node = vlib_get_node_by_name (vm, (u8 *) node_name);
   u32 node_index = node->index;
 
-  u8 *buffer =
-    get_packet_buffer (vm, node_index, face->dpoi_index,
-		       (ip46_address_t *) prefix,
-		       (params->protocol ==
-			IPPROTO_IPV6) ? HICN_TYPE_IPV6_ICMP :
-		       HICN_TYPE_IPV4_ICMP);
+  u8 *buffer = get_packet_buffer (vm, node_index, face->dpoi_index,
+				  (ip46_address_t *) prefix,
+				  (params->protocol ==
+				   IPPROTO_IPV6) ? HICN_TYPE_IPV6_ICMP :
+				  HICN_TYPE_IPV4_ICMP);
   n = hicn_mapme_create_packet (buffer, prefix, params);
   if (n <= 0)
     {
@@ -281,8 +280,7 @@ static_always_inline void
 hicn_mapme_send_updates (vlib_main_t * vm, hicn_prefix_t * prefix,
 			 dpo_id_t dpo, bool send_all)
 {
-  const hicn_dpo_vft_t *dpo_vft = hicn_dpo_get_vft (dpo.dpoi_type);
-  hicn_mapme_tfib_t *tfib = TFIB (dpo_vft->hicn_dpo_get_ctx (dpo.dpoi_index));
+  hicn_mapme_tfib_t *tfib = TFIB (hicn_strategy_dpo_ctx_get (dpo.dpoi_index));
   if (!tfib)
     {
       DEBUG ("NULL TFIB entry id=%d", dpo.dpoi_index);
@@ -323,7 +321,7 @@ hicn_mapme_eventmgr_process (vlib_main_t * vm,
   u8 idle = 0;
 
   retx_t retx_array[NUM_RETX_SLOT][NUM_RETX_ENTRIES];
-  memset(retx_array, 0, NUM_RETX_SLOT*NUM_RETX_ENTRIES);
+  memset (retx_array, 0, NUM_RETX_SLOT * NUM_RETX_ENTRIES);
   u8 retx_len[NUM_RETX_SLOT] = { 0 };
   u8 cur = 0;			/* current slot */
 
@@ -500,10 +498,8 @@ hicn_mapme_eventmgr_process (vlib_main_t * vm,
 	      if (retx->dpo.dpoi_index == ~0)	/* deleted entry */
 		continue;
 
-	      const hicn_dpo_vft_t *dpo_vft =
-		hicn_dpo_get_vft (retx->dpo.dpoi_type);
 	      hicn_mapme_tfib_t *tfib =
-		TFIB (dpo_vft->hicn_dpo_get_ctx (retx->dpo.dpoi_index));
+		TFIB (hicn_strategy_dpo_ctx_get (retx->dpo.dpoi_index));
 	      if (!tfib)
 		{
 		  DEBUG ("NULL TFIB entry for dpoi_index=%d",
@@ -517,16 +513,16 @@ hicn_mapme_eventmgr_process (vlib_main_t * vm,
 	      // If we exceed the numver of retransmittion it means that all tfib entries have seens at least HICN_PARAM_RTX_MAX of retransmission
 	      if (retx->rtx_count < HICN_PARAM_RTX_MAX)
 		{
-		/*
-		 * We did some retransmissions, so let's reschedule a check in the
-		 * next slot
-		 */
+		  /*
+		   * We did some retransmissions, so let's reschedule a check in the
+		   * next slot
+		   */
 		  NXT[NXTLEN++] = CUR[pos];
 		  idle = 0;
 		}
 	      else
 		{
-		  hicn_mapme_tfib_clear(tfib);
+		  hicn_mapme_tfib_clear (tfib);
 		}
 	    }
 
diff --git a/hicn-plugin/src/pcs.h b/hicn-plugin/src/pcs.h
index d9c48954e..fc63bd0a6 100644
--- a/hicn-plugin/src/pcs.h
+++ b/hicn-plugin/src/pcs.h
@@ -174,7 +174,8 @@ hicn_pit_to_cs (vlib_main_t * vm, hicn_pit_cs_t * pitcs,
 
 always_inline void
 hicn_pcs_cs_update (vlib_main_t * vm, hicn_pit_cs_t * pitcs,
-		    hicn_pcs_entry_t * old_entry, hicn_pcs_entry_t * entry, hicn_hash_node_t * node);
+		    hicn_pcs_entry_t * old_entry, hicn_pcs_entry_t * entry,
+		    hicn_hash_node_t * node);
 
 always_inline void
 hicn_pcs_cs_delete (vlib_main_t * vm, hicn_pit_cs_t * pitcs,
@@ -186,24 +187,24 @@ always_inline int
 hicn_pcs_cs_insert (vlib_main_t * vm, hicn_pit_cs_t * pitcs,
 		    hicn_pcs_entry_t * entry, hicn_hash_node_t * node,
 		    hicn_hash_entry_t ** hash_entry, u64 hashval,
-		    u32 * node_id, u8 * dpo_ctx_id, u8 * vft_id, u8 * is_cs,
-		    u8 * hash_entry_id, u32 * bucket_id,
+		    u32 * node_id, index_t * dpo_ctx_id, u8 * vft_id,
+		    u8 * is_cs, u8 * hash_entry_id, u32 * bucket_id,
 		    u8 * bucket_is_overflow);
 
 always_inline int
 hicn_pcs_cs_insert_update (vlib_main_t * vm, hicn_pit_cs_t * pitcs,
 			   hicn_pcs_entry_t * entry, hicn_hash_node_t * node,
 			   hicn_hash_entry_t ** hash_entry, u64 hashval,
-			   u32 * node_id, u8 * dpo_ctx_id, u8 * vft_id,
+			   u32 * node_id, index_t * dpo_ctx_id, u8 * vft_id,
 			   u8 * is_cs, u8 * hash_entry_id, u32 * bucket_id,
 			   u8 * bucket_is_overflow, dpo_id_t * inface);
 
 always_inline int
 hicn_pcs_pit_insert (hicn_pit_cs_t * pitcs, hicn_pcs_entry_t * entry,
 		     hicn_hash_node_t * node, hicn_hash_entry_t ** hash_entry,
-		     u64 hashval, u32 * node_id, u8 * dpo_ctx_id, u8 * vft_id,
-		     u8 * is_cs, u8 * hash_entry_id, u32 * bucket_id,
-		     u8 * bucket_is_overflow);
+		     u64 hashval, u32 * node_id, index_t * dpo_ctx_id,
+		     u8 * vft_id, u8 * is_cs, u8 * hash_entry_id,
+		     u32 * bucket_id, u8 * bucket_is_overflow);
 
 always_inline void
 hicn_pcs_pit_delete (hicn_pit_cs_t * pitcs, hicn_pcs_entry_t ** pcs_entryp,
@@ -215,8 +216,9 @@ always_inline int
 hicn_pcs_insert (vlib_main_t * vm, hicn_pit_cs_t * pitcs,
 		 hicn_pcs_entry_t * entry, hicn_hash_node_t * node,
 		 hicn_hash_entry_t ** hash_entry, u64 hashval, u32 * node_id,
-		 u8 * dpo_ctx_id, u8 * vft_id, u8 * is_cs, u8 * hash_entry_id,
-		 u32 * bucket_id, u8 * bucket_is_overflow);
+		 index_t * dpo_ctx_id, u8 * vft_id, u8 * is_cs,
+		 u8 * hash_entry_id, u32 * bucket_id,
+		 u8 * bucket_is_overflow);
 
 always_inline void
 hicn_pcs_delete (hicn_pit_cs_t * pitcs, hicn_pcs_entry_t ** pcs_entryp,
@@ -365,7 +367,7 @@ hicn_pcs_delete_internal (hicn_pit_cs_t * pitcs,
   else
     {
       pitcs->pcs_pit_dealloc++;
-      dpo_vft->hicn_dpo_unlock_dpo_ctx (hicn_dpo_id);
+      hicn_strategy_dpo_ctx_unlock (hicn_dpo_id);
 
       /* Flush faces */
       hicn_faces_flush (&(pcs->u.pit.faces));
@@ -391,7 +393,7 @@ hicn_pit_to_cs (vlib_main_t * vm, hicn_pit_cs_t * pitcs,
    * hash entry.
    */
   pitcs->pcs_pit_count--;
-  dpo_vft->hicn_dpo_unlock_dpo_ctx (hicn_dpo_id);
+  hicn_strategy_dpo_ctx_unlock (hicn_dpo_id);
   /* Flush faces */
   hicn_faces_flush (&(pcs_entry->u.pit.faces));
 
@@ -448,7 +450,8 @@ hicn_pit_to_cs (vlib_main_t * vm, hicn_pit_cs_t * pitcs,
 
 always_inline void
 hicn_pcs_cs_update (vlib_main_t * vm, hicn_pit_cs_t * pitcs,
-		    hicn_pcs_entry_t * old_entry, hicn_pcs_entry_t * entry, hicn_hash_node_t * node)
+		    hicn_pcs_entry_t * old_entry, hicn_pcs_entry_t * entry,
+		    hicn_hash_node_t * node)
 {
   hicn_cs_policy_t *policy_state;
   hicn_cs_policy_vft_t *policy_vft;
@@ -468,48 +471,48 @@ hicn_pcs_cs_update (vlib_main_t * vm, hicn_pit_cs_t * pitcs,
 	}
     }
 
-  if (dpo_cmp(&entry->u.cs.cs_rxface, &old_entry->u.cs.cs_rxface) !=0)
+  if (dpo_cmp (&entry->u.cs.cs_rxface, &old_entry->u.cs.cs_rxface) != 0)
     {
       /* Dequeue content from the old queue */
-      policy_vft->hicn_cs_dequeue(pitcs, node, old_entry, policy_state);
+      policy_vft->hicn_cs_dequeue (pitcs, node, old_entry, policy_state);
 
-      dpo_copy(&old_entry->u.cs.cs_rxface, &entry->u.cs.cs_rxface);
+      dpo_copy (&old_entry->u.cs.cs_rxface, &entry->u.cs.cs_rxface);
       face_dpo = (dpo_id_t *) & (old_entry->u.cs.cs_rxface);
       policy_state = &pitcs->policy_state;
       policy_vft = &pitcs->policy_vft;
 
       if (face_dpo->dpoi_type == hicn_face_ip_type)
-        {
-          hicn_face_t *face = hicn_dpoi_get_from_idx (face_dpo->dpoi_index);
-          if (face->shared.flags & HICN_FACE_FLAGS_APPFACE_PROD)
-            {
-              hicn_face_prod_t *prod_face = (hicn_face_prod_t *) face->data;
-              policy_state = &prod_face->policy;
-              policy_vft = &prod_face->policy_vft;
-            }
-        }
+	{
+	  hicn_face_t *face = hicn_dpoi_get_from_idx (face_dpo->dpoi_index);
+	  if (face->shared.flags & HICN_FACE_FLAGS_APPFACE_PROD)
+	    {
+	      hicn_face_prod_t *prod_face = (hicn_face_prod_t *) face->data;
+	      policy_state = &prod_face->policy;
+	      policy_vft = &prod_face->policy_vft;
+	    }
+	}
 
       policy_vft->hicn_cs_insert (pitcs, node, old_entry, policy_state);
 
       if (policy_state->count > policy_state->max)
-        {
-          hicn_hash_node_t *node;
-          hicn_pcs_entry_t *pcs_entry;
-          hicn_hash_entry_t *hash_entry;
-          policy_vft->hicn_cs_delete_get (pitcs, policy_state,
-                                          &node, &pcs_entry, &hash_entry);
-
-          /*
-           * We don't have to decrease the lock (therefore we cannot
-           * use hicn_pcs_cs_delete function)
-           */
-          policy_vft->hicn_cs_dequeue (pitcs, node, pcs_entry, policy_state);
-
-          hicn_cs_delete_trimmed (pitcs, &pcs_entry, hash_entry, &node, vm);
-
-          /* Update the global CS counter */
-          pitcs->pcs_cs_count--;
-        }
+	{
+	  hicn_hash_node_t *node;
+	  hicn_pcs_entry_t *pcs_entry;
+	  hicn_hash_entry_t *hash_entry;
+	  policy_vft->hicn_cs_delete_get (pitcs, policy_state,
+					  &node, &pcs_entry, &hash_entry);
+
+	  /*
+	   * We don't have to decrease the lock (therefore we cannot
+	   * use hicn_pcs_cs_delete function)
+	   */
+	  policy_vft->hicn_cs_dequeue (pitcs, node, pcs_entry, policy_state);
+
+	  hicn_cs_delete_trimmed (pitcs, &pcs_entry, hash_entry, &node, vm);
+
+	  /* Update the global CS counter */
+	  pitcs->pcs_cs_count--;
+	}
     }
   else
     /* Update the CS LRU, moving this item to the head */
@@ -565,8 +568,8 @@ always_inline int
 hicn_pcs_cs_insert (vlib_main_t * vm, hicn_pit_cs_t * pitcs,
 		    hicn_pcs_entry_t * entry, hicn_hash_node_t * node,
 		    hicn_hash_entry_t ** hash_entry, u64 hashval,
-		    u32 * node_id, u8 * dpo_ctx_id, u8 * vft_id, u8 * is_cs,
-		    u8 * hash_entry_id, u32 * bucket_id,
+		    u32 * node_id, index_t * dpo_ctx_id, u8 * vft_id,
+		    u8 * is_cs, u8 * hash_entry_id, u32 * bucket_id,
 		    u8 * bucket_is_overflow)
 {
   ASSERT (entry == hicn_hashtb_node_data (node));
@@ -611,16 +614,16 @@ hicn_pcs_cs_insert (vlib_main_t * vm, hicn_pit_cs_t * pitcs,
 	  policy_vft->hicn_cs_delete_get (pitcs, policy_state,
 					  &node, &pcs_entry, &hash_entry);
 
-          /*
-           * We don't have to decrease the lock (therefore we cannot
-           * use hicn_pcs_cs_delete function)
-           */
-          policy_vft->hicn_cs_dequeue (pitcs, node, pcs_entry, policy_state);
+	  /*
+	   * We don't have to decrease the lock (therefore we cannot
+	   * use hicn_pcs_cs_delete function)
+	   */
+	  policy_vft->hicn_cs_dequeue (pitcs, node, pcs_entry, policy_state);
 
-          hicn_cs_delete_trimmed (pitcs, &pcs_entry, hash_entry, &node, vm);
+	  hicn_cs_delete_trimmed (pitcs, &pcs_entry, hash_entry, &node, vm);
 
-          /* Update the global CS counter */
-          pitcs->pcs_cs_count--;
+	  /* Update the global CS counter */
+	  pitcs->pcs_cs_count--;
 	}
     }
   return ret;
@@ -634,7 +637,7 @@ always_inline int
 hicn_pcs_cs_insert_update (vlib_main_t * vm, hicn_pit_cs_t * pitcs,
 			   hicn_pcs_entry_t * entry, hicn_hash_node_t * node,
 			   hicn_hash_entry_t ** hash_entry, u64 hashval,
-			   u32 * node_id, u8 * dpo_ctx_id, u8 * vft_id,
+			   u32 * node_id, index_t * dpo_ctx_id, u8 * vft_id,
 			   u8 * is_cs, u8 * hash_entry_id, u32 * bucket_id,
 			   u8 * bucket_is_overflow, dpo_id_t * inface)
 {
@@ -677,9 +680,9 @@ hicn_pcs_cs_insert_update (vlib_main_t * vm, hicn_pit_cs_t * pitcs,
 always_inline int
 hicn_pcs_pit_insert (hicn_pit_cs_t * pitcs, hicn_pcs_entry_t * entry,
 		     hicn_hash_node_t * node, hicn_hash_entry_t ** hash_entry,
-		     u64 hashval, u32 * node_id, u8 * dpo_ctx_id, u8 * vft_id,
-		     u8 * is_cs, u8 * hash_entry_id, u32 * bucket_id,
-		     u8 * bucket_is_overflow)
+		     u64 hashval, u32 * node_id, index_t * dpo_ctx_id,
+		     u8 * vft_id, u8 * is_cs, u8 * hash_entry_id,
+		     u32 * bucket_id, u8 * bucket_is_overflow)
 {
   ASSERT (entry == hicn_hashtb_node_data (node));
 
@@ -724,8 +727,8 @@ always_inline int
 hicn_pcs_insert (vlib_main_t * vm, hicn_pit_cs_t * pitcs,
 		 hicn_pcs_entry_t * entry, hicn_hash_node_t * node,
 		 hicn_hash_entry_t ** hash_entry, u64 hashval, u32 * node_id,
-		 u8 * dpo_ctx_id, u8 * vft_id, u8 * is_cs, u8 * hash_entry_id,
-		 u32 * bucket_id, u8 * bucket_is_overflow)
+		 index_t * dpo_ctx_id, u8 * vft_id, u8 * is_cs,
+		 u8 * hash_entry_id, u32 * bucket_id, u8 * bucket_is_overflow)
 {
   int ret;
 
diff --git a/hicn-plugin/src/route.c b/hicn-plugin/src/route.c
index 85ad9f729..67dedaa88 100644
--- a/hicn-plugin/src/route.c
+++ b/hicn-plugin/src/route.c
@@ -197,14 +197,9 @@ hicn_route_add (hicn_face_id_t * face_id, u32 len,
 	  clib_memcpy (&nhops[i], &face_dpo_tmp[i], sizeof (dpo_id_t));
 	}
 
-      ret =
-	default_dpo.hicn_dpo_create (prefix->fp_proto, nhops, n_face_dpo,
-				     &dpo_idx);
+      default_dpo.hicn_dpo_create (prefix->fp_proto, nhops, n_face_dpo,
+				   &dpo_idx);
 
-      if (ret)
-	{
-	  return ret;
-	}
       /* the value we got when we registered */
       /*
        * This should be taken from the name?!? the index of the
@@ -291,11 +286,10 @@ hicn_route_del_nhop (fib_prefix_t * prefix, hicn_face_id_t face_id)
     {
       vft_id = hicn_dpo_get_vft_id (hicn_dpo_id);
       dpo_vft = hicn_dpo_get_vft (vft_id);
-      ret = dpo_vft->hicn_dpo_del_nh (face_id, hicn_dpo_id->dpoi_index,
-				      prefix);
+      ret = dpo_vft->hicn_dpo_del_nh (face_id, hicn_dpo_id->dpoi_index);
 
       hicn_dpo_ctx_t *dpo_ctx =
-	dpo_vft->hicn_dpo_get_ctx (hicn_dpo_id->dpoi_index);
+	hicn_strategy_dpo_ctx_get (hicn_dpo_id->dpoi_index);
 
       if (ret == HICN_ERROR_NONE && !dpo_ctx->entry_count)
 	ret = hicn_route_del (prefix);
@@ -311,21 +305,15 @@ hicn_route_set_strategy (fib_prefix_t * prefix, u8 strategy_id)
   dpo_id_t new_dpo_id = DPO_INVALID;
   int ret;
   hicn_dpo_ctx_t *old_hicn_dpo_ctx;
-  const hicn_dpo_vft_t *old_dpo_vft;
   const hicn_dpo_vft_t *new_dpo_vft;
   index_t new_hicn_dpo_idx;
   u32 fib_index;
-  u32 old_vft_id;
-
 
   ret = hicn_route_get_dpo (prefix, &hicn_dpo_id, &fib_index);
 
   if (ret == HICN_ERROR_NONE)
     {
-      old_vft_id = hicn_dpo_get_vft_id (hicn_dpo_id);
-      old_dpo_vft = hicn_dpo_get_vft (old_vft_id);
-      old_hicn_dpo_ctx =
-	old_dpo_vft->hicn_dpo_get_ctx (hicn_dpo_id->dpoi_index);
+      old_hicn_dpo_ctx = hicn_strategy_dpo_ctx_get (hicn_dpo_id->dpoi_index);
 
       new_dpo_vft = hicn_dpo_get_vft_from_id (strategy_id);
 
diff --git a/hicn-plugin/src/strategies/dpo_mw.c b/hicn-plugin/src/strategies/dpo_mw.c
index 3317d31e0..eebb572c4 100644
--- a/hicn-plugin/src/strategies/dpo_mw.c
+++ b/hicn-plugin/src/strategies/dpo_mw.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2017-2019 Cisco and/or its affiliates.
+ * Copyright (c) 2017-2020 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:
@@ -13,27 +13,10 @@
  * limitations under the License.
  */
 
-#include "../strategy_dpo_ctx.h"
 #include "dpo_mw.h"
 #include "strategy_mw.h"
 #include "../strategy_dpo_manager.h"
-
-hicn_strategy_mw_ctx_t *hicn_strategy_mw_ctx_pool;
-
-const static char *const hicn_ip6_nodes[] = {
-  "hicn-mw-strategy",		// this is the name you give your node in VLIB_REGISTER_NODE
-  NULL,
-};
-
-const static char *const hicn_ip4_nodes[] = {
-  "hicn-mw-strategy",		// this is the name you give your node in VLIB_REGISTER_NODE
-  NULL,
-};
-
-const static char *const *const hicn_nodes_mw[DPO_PROTO_NUM] = {
-  [DPO_PROTO_IP6] = hicn_ip6_nodes,
-  [DPO_PROTO_IP4] = hicn_ip4_nodes,
-};
+#include "../strategy_dpo_ctx.h"
 
 /**
  * @brief DPO type value for the mw_strategy
@@ -41,16 +24,13 @@ const static char *const *const hicn_nodes_mw[DPO_PROTO_NUM] = {
 static dpo_type_t hicn_dpo_type_mw;
 
 static const hicn_dpo_vft_t hicn_dpo_mw_vft = {
-  .hicn_dpo_get_ctx = &hicn_strategy_mw_ctx_get,
   .hicn_dpo_is_type = &hicn_dpo_is_type_strategy_mw,
   .hicn_dpo_get_type = &hicn_dpo_strategy_mw_get_type,
   .hicn_dpo_module_init = &hicn_dpo_strategy_mw_module_init,
   .hicn_dpo_create = &hicn_strategy_mw_ctx_create,
   .hicn_dpo_add_update_nh = &hicn_strategy_mw_ctx_add_nh,
   .hicn_dpo_del_nh = &hicn_strategy_mw_ctx_del_nh,
-  .hicn_dpo_lock_dpo_ctx = &hicn_strategy_mw_ctx_lock,
-  .hicn_dpo_unlock_dpo_ctx = hicn_strategy_mw_ctx_unlock,
-  .format_hicn_dpo = &format_hicn_dpo_strategy_mw
+  .hicn_dpo_format = &hicn_strategy_mw_format_ctx
 };
 
 int
@@ -62,28 +42,15 @@ hicn_dpo_is_type_strategy_mw (const dpo_id_t * dpo)
 void
 hicn_dpo_strategy_mw_module_init (void)
 {
-  pool_validate_index (hicn_strategy_mw_ctx_pool, 0);
   /*
    * Register our type of dpo
    */
   hicn_dpo_type_mw =
-    hicn_dpo_register_new_type (hicn_nodes_mw, &hicn_dpo_mw_vft,
+    hicn_dpo_register_new_type (hicn_nodes_strategy, &hicn_dpo_mw_vft,
 				hicn_mw_strategy_get_vft (),
 				&dpo_strategy_mw_ctx_vft);
 }
 
-u8 *
-format_hicn_dpo_strategy_mw (u8 * s, va_list * ap)
-{
-
-  u32 indent = va_arg (*ap, u32);
-  s =
-    format (s,
-	    "Static Weights: weights are updated by the control plane, next hop is the one with the maximum weight.\n",
-	    indent);
-  return (s);
-}
-
 dpo_type_t
 hicn_dpo_strategy_mw_get_type (void)
 {
@@ -92,33 +59,14 @@ hicn_dpo_strategy_mw_get_type (void)
 
 //////////////////////////////////////////////////////////////////////////////////////////////////
 
-void
-hicn_strategy_mw_ctx_lock (dpo_id_t * dpo)
-{
-  hicn_strategy_mw_ctx_t *hicn_strategy_mw_ctx =
-    (hicn_strategy_mw_ctx_t *) hicn_strategy_mw_ctx_get (dpo->dpoi_index);
-
-  if (hicn_strategy_mw_ctx != NULL)
-    {
-      hicn_strategy_mw_ctx->default_ctx.locks++;
-    }
-}
 
-void
-hicn_strategy_mw_ctx_unlock (dpo_id_t * dpo)
+u8 *
+hicn_strategy_mw_format_ctx (u8 * s, int n, ...)
 {
-  hicn_strategy_mw_ctx_t *hicn_strategy_mw_ctx =
-    (hicn_strategy_mw_ctx_t *) hicn_strategy_mw_ctx_get (dpo->dpoi_index);
-
-  if (hicn_strategy_mw_ctx != NULL)
-    {
-      hicn_strategy_mw_ctx->default_ctx.locks--;
-
-      if (0 == hicn_strategy_mw_ctx->default_ctx.locks)
-	{
-	  pool_put (hicn_strategy_mw_ctx_pool, hicn_strategy_mw_ctx);
-	}
-    }
+  va_list args;
+  va_start (args, n);
+  s = format_hicn_strategy_mw_ctx (s, &args);
+  return s;
 }
 
 u8 *
@@ -126,24 +74,30 @@ format_hicn_strategy_mw_ctx (u8 * s, va_list * ap)
 {
   int i = 0;
   index_t index = va_arg (*ap, index_t);
-  hicn_strategy_mw_ctx_t *dpo = NULL;
+  hicn_dpo_ctx_t *dpo_ctx = NULL;
+  hicn_strategy_mw_ctx_t *mw_dpo_ctx = NULL;
   dpo_id_t *next_hop = NULL;
   hicn_face_vft_t *face_vft = NULL;
   u32 indent = va_arg (*ap, u32);;
 
-  dpo = (hicn_strategy_mw_ctx_t *) hicn_strategy_mw_ctx_get (index);
+  dpo_ctx = hicn_strategy_dpo_ctx_get (index);
+  if (dpo_ctx == NULL)
+    return s;
+
+  mw_dpo_ctx = (hicn_strategy_mw_ctx_t *) dpo_ctx->data;
 
   s = format (s, "hicn-mw");
-  for (i = 0; i < HICN_PARAM_FIB_ENTRY_NHOPS_MAX && dpo != NULL; i++)
+  for (i = 0; i < HICN_PARAM_FIB_ENTRY_NHOPS_MAX; i++)
     {
       u8 *buf = NULL;
-      if (i < dpo->default_ctx.entry_count)
-	buf = format(NULL, "FIB");
-      else if (i >= HICN_PARAM_FIB_ENTRY_NHOPS_MAX - dpo->default_ctx.tfib_entry_count)
-	buf = format(NULL, "TFIB");
+      if (i < dpo_ctx->entry_count)
+	buf = format (NULL, "FIB");
+      else if (i >=
+	       HICN_PARAM_FIB_ENTRY_NHOPS_MAX - dpo_ctx->tfib_entry_count)
+	buf = format (NULL, "TFIB");
       else
 	continue;
-      next_hop = &dpo->default_ctx.next_hops[i];
+      next_hop = &dpo_ctx->next_hops[i];
       face_vft = hicn_face_get_vft (next_hop->dpoi_type);
       if (face_vft != NULL)
 	{
@@ -151,7 +105,7 @@ format_hicn_strategy_mw_ctx (u8 * s, va_list * ap)
 	  s =
 	    format (s, "%U ", face_vft->format_face, next_hop->dpoi_index,
 		    indent);
-	  s = format (s, "weight %u", dpo->weight[i]);
+	  s = format (s, "weight %u", mw_dpo_ctx->weight[i]);
 	  s = format (s, " %s", buf);
 	}
     }
@@ -159,124 +113,49 @@ format_hicn_strategy_mw_ctx (u8 * s, va_list * ap)
   return (s);
 }
 
-static index_t
-hicn_strategy_mw_ctx_get_index (hicn_strategy_mw_ctx_t * cd)
-{
-  return (cd - hicn_strategy_mw_ctx_pool);
-}
-
-int
+void
 hicn_strategy_mw_ctx_create (dpo_proto_t proto, const dpo_id_t * next_hop,
 			     int nh_len, index_t * dpo_idx)
 {
   hicn_strategy_mw_ctx_t *hicn_strategy_mw_ctx;
-  int ret = HICN_ERROR_NONE, i;
+  hicn_dpo_ctx_t *hicn_strategy_ctx;
 
   /* Allocate a hicn_dpo_ctx on the vpp pool and initialize it */
-  pool_get (hicn_strategy_mw_ctx_pool, hicn_strategy_mw_ctx);
+  hicn_strategy_ctx = hicn_strategy_dpo_ctx_alloc ();
+  hicn_strategy_mw_ctx = (hicn_strategy_mw_ctx_t *) hicn_strategy_ctx->data;
 
-  *dpo_idx = hicn_strategy_mw_ctx_get_index (hicn_strategy_mw_ctx);
+  *dpo_idx = hicn_strategy_dpo_ctx_get_index (hicn_strategy_ctx);
 
-  init_dpo_ctx (&(hicn_strategy_mw_ctx->default_ctx));
-
-  for (i = 0; i < HICN_PARAM_FIB_ENTRY_NHOPS_MAX && i < nh_len; i++)
-    {
-      clib_memcpy (&hicn_strategy_mw_ctx->default_ctx.next_hops[i],
-		   &next_hop[i], sizeof (dpo_id_t));
-      hicn_strategy_mw_ctx->default_ctx.entry_count++;
-    }
+  init_dpo_ctx (hicn_strategy_ctx, next_hop, nh_len, hicn_dpo_type_mw);
 
   memset (hicn_strategy_mw_ctx->weight, 0, HICN_PARAM_FIB_ENTRY_NHOPS_MAX);
-
-  return ret;
-}
-
-hicn_dpo_ctx_t *
-hicn_strategy_mw_ctx_get (index_t index)
-{
-  hicn_strategy_mw_ctx_t *hicn_strategy_mw_ctx = NULL;
-  if (!pool_is_free_index (hicn_strategy_mw_ctx_pool, index))
-    {
-      hicn_strategy_mw_ctx =
-        (pool_elt_at_index (hicn_strategy_mw_ctx_pool, index));
-    }
-
-  return (hicn_dpo_ctx_t *)hicn_strategy_mw_ctx;
 }
 
 int
 hicn_strategy_mw_ctx_add_nh (const dpo_id_t * nh, index_t dpo_idx)
 {
-  hicn_strategy_mw_ctx_t *hicn_strategy_mw_ctx =
-    (hicn_strategy_mw_ctx_t *) hicn_strategy_mw_ctx_get (dpo_idx);
+  hicn_dpo_ctx_t *hicn_strategy_dpo_ctx = hicn_strategy_dpo_ctx_get (dpo_idx);
+  u8 pos = 0;
 
-  if (hicn_strategy_mw_ctx == NULL)
+  if (hicn_strategy_dpo_ctx == NULL)
     {
       return HICN_ERROR_STRATEGY_NOT_FOUND;
     }
 
-  int empty = hicn_strategy_mw_ctx->default_ctx.entry_count;
-
-  /* Iterate through the list of faces to add new faces */
-  for (int i = 0; i < hicn_strategy_mw_ctx->default_ctx.entry_count; i++)
-    {
-      if (!memcmp
-          (nh, &hicn_strategy_mw_ctx->default_ctx.next_hops[i],
-           sizeof (dpo_id_t)))
-        {
-          /* If face is marked as deleted, ignore it */
-          hicn_face_t *face =
-            hicn_dpoi_get_from_idx (hicn_strategy_mw_ctx->
-                                    default_ctx.next_hops[i].dpoi_index);
-          if (face->shared.flags & HICN_FACE_FLAGS_DELETED)
-            {
-              continue;
-            }
-          return HICN_ERROR_DPO_CTX_NHOPS_EXISTS;
-        }
-    }
-
-  /* Get an empty place */
-  if (empty > HICN_PARAM_FIB_ENTRY_NHOPS_MAX)
-    {
-      return HICN_ERROR_DPO_CTX_NHOPS_NS;
-    }
-
-  clib_memcpy (&hicn_strategy_mw_ctx->default_ctx.next_hops[empty], nh,
-               sizeof (dpo_id_t));
-  hicn_strategy_mw_ctx->default_ctx.entry_count++;
+  hicn_strategy_dpo_ctx_add_nh (nh, hicn_strategy_dpo_ctx, &pos);
+  hicn_strategy_mw_ctx_t *hicn_strategy_mw_ctx =
+    (hicn_strategy_mw_ctx_t *) & hicn_strategy_dpo_ctx->data;
 
+  hicn_strategy_mw_ctx->weight[pos] = DEFAULT_WEIGHT;
   return HICN_ERROR_NONE;
 }
 
 int
-hicn_strategy_mw_ctx_del_nh (hicn_face_id_t face_id, index_t dpo_idx,
-			     fib_prefix_t * fib_pfx)
+hicn_strategy_mw_ctx_del_nh (hicn_face_id_t face_id, index_t dpo_idx)
 {
-  hicn_strategy_mw_ctx_t *hicn_strategy_mw_ctx =
-    (hicn_strategy_mw_ctx_t *) hicn_strategy_mw_ctx_get (dpo_idx);
-  int ret = HICN_ERROR_DPO_CTX_NOT_FOUND;
-  dpo_id_t invalid = NEXT_HOP_INVALID;
-
-  if (hicn_strategy_mw_ctx == NULL)
-    return HICN_ERROR_STRATEGY_NOT_FOUND;
-
-  for (int i = 0; i < hicn_strategy_mw_ctx->default_ctx.entry_count; i++)
-    {
-      if (hicn_strategy_mw_ctx->default_ctx.next_hops[i].dpoi_index ==
-          face_id)
-        {
-          hicn_face_unlock (&hicn_strategy_mw_ctx->default_ctx.
-                            next_hops[i]);
-          hicn_strategy_mw_ctx->default_ctx.entry_count--;
-          hicn_strategy_mw_ctx->default_ctx.next_hops[i] = hicn_strategy_mw_ctx->default_ctx.next_hops[hicn_strategy_mw_ctx->default_ctx.entry_count];
-          hicn_strategy_mw_ctx->default_ctx.next_hops[hicn_strategy_mw_ctx->default_ctx.entry_count] = invalid;
-          ret = HICN_ERROR_NONE;
-          break;
-        }
-    }
-
-  return ret;
+  hicn_dpo_ctx_t *hicn_strategy_dpo_ctx = hicn_strategy_dpo_ctx_get (dpo_idx);
+  //No need to flush the weights, they are initialized when a dpo_ctx is created;
+  return hicn_strategy_dpo_ctx_del_nh (face_id, hicn_strategy_dpo_ctx);
 }
 
 /*
diff --git a/hicn-plugin/src/strategies/dpo_mw.h b/hicn-plugin/src/strategies/dpo_mw.h
index a8c0a3b43..ccc8d044f 100644
--- a/hicn-plugin/src/strategies/dpo_mw.h
+++ b/hicn-plugin/src/strategies/dpo_mw.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2017-2019 Cisco and/or its affiliates.
+ * Copyright (c) 2017-2020 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:
@@ -19,28 +19,14 @@
 #include <vnet/dpo/dpo.h>
 #include "../strategy_dpo_ctx.h"
 
+#define DEFAULT_WEIGHT 0
+
 typedef struct hicn_strategy_mw_ctx_s
 {
-  hicn_dpo_ctx_t default_ctx;
-
   u8 weight[HICN_PARAM_FIB_ENTRY_NHOPS_MAX];
 } hicn_strategy_mw_ctx_t;
 
 /**
- * @brief Lock the mw ctx
- *
- * @param dpo Identifier of the dpo of the mw ctx
- */
-void hicn_strategy_mw_ctx_lock (dpo_id_t * dpo);
-
-/**
- * @brief Unlock the mw ctx
- *
- * @param dpo Identifier of the dpo of the mw ctx
- */
-void hicn_strategy_mw_ctx_unlock (dpo_id_t * dpo);
-
-/**
  * @brief Format the dpo ctx for a human-readable string
  *
  * @param s String to which to append the formatted dpo ctx
@@ -51,8 +37,8 @@ void hicn_strategy_mw_ctx_unlock (dpo_id_t * dpo);
 u8 *format_hicn_strategy_mw_ctx (u8 * s, va_list * ap);
 
 const static dpo_vft_t dpo_strategy_mw_ctx_vft = {
-  .dv_lock = hicn_strategy_mw_ctx_lock,
-  .dv_unlock = hicn_strategy_mw_ctx_unlock,
+  .dv_lock = hicn_strategy_dpo_ctx_lock,
+  .dv_unlock = hicn_strategy_dpo_ctx_unlock,
   .dv_format = format_hicn_strategy_mw_ctx,
 };
 
@@ -73,7 +59,7 @@ hicn_dpo_ctx_t *hicn_strategy_mw_ctx_get (index_t index);
  * @param dpo_idx index_t that will hold the index of the created dpo ctx
  * @return HICN_ERROR_NONE if the creation was fine, otherwise EINVAL
  */
-int
+void
 hicn_strategy_mw_ctx_create (dpo_proto_t proto, const dpo_id_t * next_hop,
 			     int nh_len, index_t * dpo_idx);
 
@@ -100,9 +86,7 @@ int hicn_strategy_mw_ctx_add_nh (const dpo_id_t * nh, index_t dpo_idx);
  * @return HICN_ERROR_NONE if the update or insert was fine,
  * otherwise HICN_ERROR_DPO_CTS_NOT_FOUND
  */
-int
-hicn_strategy_mw_ctx_del_nh (hicn_face_id_t face_id, index_t dpo_idx,
-			     fib_prefix_t * fib_pfx);
+int hicn_strategy_mw_ctx_del_nh (hicn_face_id_t face_id, index_t dpo_idx);
 
 /**
  * @brief Prefetch a dpo
@@ -111,14 +95,40 @@ hicn_strategy_mw_ctx_del_nh (hicn_face_id_t face_id, index_t dpo_idx,
  */
 void hicn_strategy_mw_ctx_prefetch (index_t dpo_idx);
 
+/**
+ * @brief Return true if the dpo is of type strategy mw
+ *
+ * @param dpo Dpo to check the type
+ */
 int hicn_dpo_is_type_strategy_mw (const dpo_id_t * dpo);
 
+/**
+ * @brief Initialize the Maximum Weight strategy
+ */
 void hicn_dpo_strategy_mw_module_init (void);
 
+/**
+ * @brief Return the dpo type for the Maximum Weight strategy
+ */
 dpo_type_t hicn_dpo_strategy_mw_get_type (void);
 
+/**
+ * @brief Format the dpo ctx for the strategy Maximum Weight
+ *
+ * @param s String to append the formatted dpo ctx
+ * @param ap List of arguments to format
+ */
 u8 *format_hicn_dpo_strategy_mw (u8 * s, va_list * ap);
 
+/**
+ * @brief Format the dpo ctx for the strategy Maximum Weight. To
+ * call from other functions
+ *
+ * @param s String to append the formatted dpo ctx
+ * @param ... List of arguments to format
+ */
+u8 *hicn_strategy_mw_format_ctx (u8 * s, int n, ...);
+
 
 #endif // __HICN_DPO_MW_H__
 
diff --git a/hicn-plugin/src/strategies/dpo_rr.c b/hicn-plugin/src/strategies/dpo_rr.c
index dfdc83ff4..a67b06acb 100644
--- a/hicn-plugin/src/strategies/dpo_rr.c
+++ b/hicn-plugin/src/strategies/dpo_rr.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2017-2019 Cisco and/or its affiliates.
+ * Copyright (c) 2017-2020 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:
@@ -13,27 +13,10 @@
  * limitations under the License.
  */
 
-#include "../strategy_dpo_ctx.h"
 #include "dpo_rr.h"
 #include "strategy_rr.h"
 #include "../strategy_dpo_manager.h"
-
-hicn_strategy_rr_ctx_t *hicn_strategy_rr_ctx_pool;
-
-const static char *const hicn_ip6_nodes[] = {
-  "hicn-rr-strategy",		// this is the name you give your node in VLIB_REGISTER_NODE
-  NULL,
-};
-
-const static char *const hicn_ip4_nodes[] = {
-  "hicn-rr-strategy",		// this is the name you give your node in VLIB_REGISTER_NODE
-  NULL,
-};
-
-const static char *const *const hicn_nodes_rr[DPO_PROTO_NUM] = {
-  [DPO_PROTO_IP6] = hicn_ip6_nodes,
-  [DPO_PROTO_IP4] = hicn_ip4_nodes,
-};
+#include "../strategy_dpo_ctx.h"
 
 /**
  * @brief DPO type value for the rr_strategy
@@ -41,16 +24,13 @@ const static char *const *const hicn_nodes_rr[DPO_PROTO_NUM] = {
 static dpo_type_t hicn_dpo_type_rr;
 
 static const hicn_dpo_vft_t hicn_dpo_rr_vft = {
-  .hicn_dpo_get_ctx = &hicn_strategy_rr_ctx_get,
   .hicn_dpo_is_type = &hicn_dpo_is_type_strategy_rr,
   .hicn_dpo_get_type = &hicn_dpo_strategy_rr_get_type,
   .hicn_dpo_module_init = &hicn_dpo_strategy_rr_module_init,
   .hicn_dpo_create = &hicn_strategy_rr_ctx_create,
   .hicn_dpo_add_update_nh = &hicn_strategy_rr_ctx_add_nh,
   .hicn_dpo_del_nh = &hicn_strategy_rr_ctx_del_nh,
-  .hicn_dpo_lock_dpo_ctx = &hicn_strategy_rr_ctx_lock,
-  .hicn_dpo_unlock_dpo_ctx = hicn_strategy_rr_ctx_unlock,
-  .format_hicn_dpo = &format_hicn_dpo_strategy_rr
+  .hicn_dpo_format = &hicn_strategy_rr_format_ctx
 };
 
 int
@@ -62,28 +42,15 @@ hicn_dpo_is_type_strategy_rr (const dpo_id_t * dpo)
 void
 hicn_dpo_strategy_rr_module_init (void)
 {
-  pool_validate_index (hicn_strategy_rr_ctx_pool, 0);
   /*
    * Register our type of dpo
    */
   hicn_dpo_type_rr =
-    hicn_dpo_register_new_type (hicn_nodes_rr, &hicn_dpo_rr_vft,
+    hicn_dpo_register_new_type (hicn_nodes_strategy, &hicn_dpo_rr_vft,
 				hicn_rr_strategy_get_vft (),
 				&dpo_strategy_rr_ctx_vft);
 }
 
-u8 *
-format_hicn_dpo_strategy_rr (u8 * s, va_list * ap)
-{
-
-  u32 indent = va_arg (*ap, u32);
-  s =
-    format (s,
-	    "Round Robin: next hop is chosen ciclying between all the available next hops, one after the other.\n",
-	    indent);
-  return (s);
-}
-
 dpo_type_t
 hicn_dpo_strategy_rr_get_type (void)
 {
@@ -92,32 +59,14 @@ hicn_dpo_strategy_rr_get_type (void)
 
 //////////////////////////////////////////////////////////////////////////////////////////////////
 
-void
-hicn_strategy_rr_ctx_lock (dpo_id_t * dpo)
-{
-  hicn_strategy_rr_ctx_t *hicn_strategy_rr_ctx =
-    (hicn_strategy_rr_ctx_t *) hicn_strategy_rr_ctx_get (dpo->dpoi_index);
-
-  if (hicn_strategy_rr_ctx != NULL)
-    {
-      hicn_strategy_rr_ctx->default_ctx.locks++;
-    }
-}
 
-void
-hicn_strategy_rr_ctx_unlock (dpo_id_t * dpo)
+u8 *
+hicn_strategy_rr_format_ctx (u8 * s, int n, ...)
 {
-  hicn_strategy_rr_ctx_t *hicn_strategy_rr_ctx =
-    (hicn_strategy_rr_ctx_t *) hicn_strategy_rr_ctx_get (dpo->dpoi_index);
-  if (hicn_strategy_rr_ctx != NULL)
-    {
-      hicn_strategy_rr_ctx->default_ctx.locks--;
-
-      if (0 == hicn_strategy_rr_ctx->default_ctx.locks)
-	{
-	  pool_put (hicn_strategy_rr_ctx_pool, hicn_strategy_rr_ctx);
-	}
-    }
+  va_list args;
+  va_start (args, n);
+  s = format_hicn_strategy_rr_ctx (s, &args);
+  return s;
 }
 
 u8 *
@@ -125,28 +74,34 @@ format_hicn_strategy_rr_ctx (u8 * s, va_list * ap)
 {
   int i = 0;
   index_t index = va_arg (*ap, index_t);
-  hicn_strategy_rr_ctx_t *dpo = NULL;
+  hicn_dpo_ctx_t *dpo_ctx = NULL;
+  hicn_strategy_rr_ctx_t *rr_dpo_ctx = NULL;
   dpo_id_t *next_hop = NULL;
   hicn_face_vft_t *face_vft = NULL;
-  u32 indent = va_arg (*ap, u32);;
+  u32 indent = va_arg (*ap, u32);
 
-  dpo = (hicn_strategy_rr_ctx_t *) hicn_strategy_rr_ctx_get (index);
+  dpo_ctx = hicn_strategy_dpo_ctx_get (index);
+  if (dpo_ctx == NULL)
+    return s;
+
+  rr_dpo_ctx = (hicn_strategy_rr_ctx_t *) dpo_ctx->data;
 
   s =
     format (s, "hicn-rr, next hop Face %d",
-	    dpo->default_ctx.next_hops[dpo->current_nhop].dpoi_index);
+	    dpo_ctx->next_hops[rr_dpo_ctx->current_nhop].dpoi_index);
 
-  for (i = 0; i < HICN_PARAM_FIB_ENTRY_NHOPS_MAX && dpo != NULL; i++)
+  for (i = 0; i < HICN_PARAM_FIB_ENTRY_NHOPS_MAX; i++)
     {
       u8 *buf = NULL;
-      if (i < dpo->default_ctx.entry_count)
-	buf = format(NULL, "FIB");
-      else if (i >= HICN_PARAM_FIB_ENTRY_NHOPS_MAX - dpo->default_ctx.tfib_entry_count)
-	buf = format(NULL, "TFIB");
+      if (i < dpo_ctx->entry_count)
+	buf = format (NULL, "FIB");
+      else if (i >=
+	       HICN_PARAM_FIB_ENTRY_NHOPS_MAX - dpo_ctx->tfib_entry_count)
+	buf = format (NULL, "TFIB");
       else
 	continue;
 
-      next_hop = &dpo->default_ctx.next_hops[i];
+      next_hop = &dpo_ctx->next_hops[i];
       face_vft = hicn_face_get_vft (next_hop->dpoi_type);
       if (face_vft != NULL)
 	{
@@ -154,132 +109,53 @@ format_hicn_strategy_rr_ctx (u8 * s, va_list * ap)
 	  s =
 	    format (s, "%U ", face_vft->format_face, next_hop->dpoi_index,
 		    indent);
-          s = format (s, " %s", buf);
+	  s = format (s, " %s", buf);
 	}
     }
 
   return (s);
 }
 
-static index_t
-hicn_strategy_rr_ctx_get_index (hicn_strategy_rr_ctx_t * cd)
-{
-  return (cd - hicn_strategy_rr_ctx_pool);
-}
-
-int
+void
 hicn_strategy_rr_ctx_create (dpo_proto_t proto, const dpo_id_t * next_hop,
 			     int nh_len, index_t * dpo_idx)
 {
   hicn_strategy_rr_ctx_t *hicn_strategy_rr_ctx;
-  int ret = HICN_ERROR_NONE, i;
+  hicn_dpo_ctx_t *hicn_strategy_ctx;
 
   /* Allocate a hicn_dpo_ctx on the vpp pool and initialize it */
-  pool_get (hicn_strategy_rr_ctx_pool, hicn_strategy_rr_ctx);
+  hicn_strategy_ctx = hicn_strategy_dpo_ctx_alloc ();
+  hicn_strategy_rr_ctx = (hicn_strategy_rr_ctx_t *) hicn_strategy_ctx->data;
 
-  *dpo_idx = hicn_strategy_rr_ctx_get_index (hicn_strategy_rr_ctx);
+  *dpo_idx = hicn_strategy_dpo_ctx_get_index (hicn_strategy_ctx);
 
-  init_dpo_ctx (&(hicn_strategy_rr_ctx->default_ctx));
-
-  for (i = 0; i < HICN_PARAM_FIB_ENTRY_NHOPS_MAX && i < nh_len; i++)
-    {
-      clib_memcpy (&hicn_strategy_rr_ctx->default_ctx.next_hops[i],
-		   &next_hop[i], sizeof (dpo_id_t));
-      hicn_strategy_rr_ctx->default_ctx.entry_count++;
-    }
+  init_dpo_ctx (hicn_strategy_ctx, next_hop, nh_len, hicn_dpo_type_rr);
 
   hicn_strategy_rr_ctx->current_nhop = 0;
-
-  return ret;
-}
-
-hicn_dpo_ctx_t *
-hicn_strategy_rr_ctx_get (index_t index)
-{
-  hicn_strategy_rr_ctx_t *hicn_strategy_rr_ctx = NULL;
-  if (!pool_is_free_index (hicn_strategy_rr_ctx_pool, index))
-    {
-      hicn_strategy_rr_ctx =
-	(pool_elt_at_index (hicn_strategy_rr_ctx_pool, index));
-    }
-  return (hicn_dpo_ctx_t *)hicn_strategy_rr_ctx;
 }
 
 int
 hicn_strategy_rr_ctx_add_nh (const dpo_id_t * nh, index_t dpo_idx)
 {
-  hicn_strategy_rr_ctx_t *hicn_strategy_rr_ctx =
-    (hicn_strategy_rr_ctx_t *) hicn_strategy_rr_ctx_get (dpo_idx);
+  hicn_dpo_ctx_t *hicn_strategy_dpo_ctx = hicn_strategy_dpo_ctx_get (dpo_idx);
+  u8 pos = 0;
 
-  if (hicn_strategy_rr_ctx == NULL)
+  if (hicn_strategy_dpo_ctx == NULL)
     {
       return HICN_ERROR_STRATEGY_NOT_FOUND;
     }
 
-  int empty = hicn_strategy_rr_ctx->default_ctx.entry_count;
-
-  /* Iterate through the list of faces to add new faces */
-  for (int i = 0; i < hicn_strategy_rr_ctx->default_ctx.entry_count; i++)
-    {
-      if (!memcmp
-          (nh, &hicn_strategy_rr_ctx->default_ctx.next_hops[i],
-           sizeof (dpo_id_t)))
-        {
-          /* If face is marked as deleted, ignore it */
-          hicn_face_t *face =
-            hicn_dpoi_get_from_idx (hicn_strategy_rr_ctx->default_ctx.
-                                    next_hops[i].dpoi_index);
-          if (face->shared.flags & HICN_FACE_FLAGS_DELETED)
-            {
-              continue;
-            }
-          return HICN_ERROR_DPO_CTX_NHOPS_EXISTS;
-        }
-    }
-
-  /* Get an empty place */
-  if (empty > HICN_PARAM_FIB_ENTRY_NHOPS_MAX)
-    {
-      return HICN_ERROR_DPO_CTX_NHOPS_NS;
-    }
-
-  clib_memcpy (&hicn_strategy_rr_ctx->default_ctx.next_hops[empty], nh,
-               sizeof (dpo_id_t));
-  hicn_strategy_rr_ctx->default_ctx.entry_count++;
-
+  hicn_strategy_dpo_ctx_add_nh (nh, hicn_strategy_dpo_ctx, &pos);
+  //nothing else to initialize in this strategy
   return HICN_ERROR_NONE;
 }
 
 int
-hicn_strategy_rr_ctx_del_nh (hicn_face_id_t face_id, index_t dpo_idx,
-			     fib_prefix_t * fib_pfx)
+hicn_strategy_rr_ctx_del_nh (hicn_face_id_t face_id, index_t dpo_idx)
 {
-  hicn_strategy_rr_ctx_t *hicn_strategy_rr_ctx =
-    (hicn_strategy_rr_ctx_t *) hicn_strategy_rr_ctx_get (dpo_idx);
-  int ret = HICN_ERROR_DPO_CTX_NOT_FOUND;
-  dpo_id_t invalid = NEXT_HOP_INVALID;
-
-  if (hicn_strategy_rr_ctx == NULL)
-    {
-      return HICN_ERROR_STRATEGY_NOT_FOUND;
-    }
-
-  for (int i = 0; i < hicn_strategy_rr_ctx->default_ctx.entry_count; i++)
-    {
-      if (hicn_strategy_rr_ctx->default_ctx.next_hops[i].dpoi_index ==
-          face_id)
-        {
-          hicn_face_unlock (&hicn_strategy_rr_ctx->
-                            default_ctx.next_hops[i]);
-          hicn_strategy_rr_ctx->default_ctx.entry_count--;
-          hicn_strategy_rr_ctx->default_ctx.next_hops[i] = hicn_strategy_rr_ctx->default_ctx.next_hops[hicn_strategy_rr_ctx->default_ctx.entry_count];
-          hicn_strategy_rr_ctx->default_ctx.next_hops[hicn_strategy_rr_ctx->default_ctx.entry_count] = invalid;
-          ret = HICN_ERROR_NONE;
-          break;
-        }
-    }
-
-  return ret;
+  hicn_dpo_ctx_t *hicn_strategy_dpo_ctx = hicn_strategy_dpo_ctx_get (dpo_idx);
+  //No need to change the current_nhop. It will be updated at the next selection.
+  return hicn_strategy_dpo_ctx_del_nh (face_id, hicn_strategy_dpo_ctx);
 }
 
 /*
diff --git a/hicn-plugin/src/strategies/dpo_rr.h b/hicn-plugin/src/strategies/dpo_rr.h
index a12183653..8afd0dabc 100644
--- a/hicn-plugin/src/strategies/dpo_rr.h
+++ b/hicn-plugin/src/strategies/dpo_rr.h
@@ -25,26 +25,10 @@
 
 typedef struct hicn_strategy_rr_ctx_s
 {
-  hicn_dpo_ctx_t default_ctx;
-
   u8 current_nhop;
 } hicn_strategy_rr_ctx_t;
 
 /**
- * @brief Lock the round robin ctx
- *
- * @param dpo Identifier of the dpo of the rr ctx
- */
-void hicn_strategy_rr_ctx_lock (dpo_id_t * dpo);
-
-/**
- * @brief Unlock the round robin ctx
- *
- * @param dpo Identifier of the dpo of the rr ctx
- */
-void hicn_strategy_rr_ctx_unlock (dpo_id_t * dpo);
-
-/**
  * @brief Format the dpo ctx for a human-readable string
  *
  * @param s String to which to append the formatted dpo ctx
@@ -55,8 +39,8 @@ void hicn_strategy_rr_ctx_unlock (dpo_id_t * dpo);
 u8 *format_hicn_strategy_rr_ctx (u8 * s, va_list * ap);
 
 const static dpo_vft_t dpo_strategy_rr_ctx_vft = {
-  .dv_lock = hicn_strategy_rr_ctx_lock,
-  .dv_unlock = hicn_strategy_rr_ctx_unlock,
+  .dv_lock = hicn_strategy_dpo_ctx_lock,
+  .dv_unlock = hicn_strategy_dpo_ctx_unlock,
   .dv_format = format_hicn_strategy_rr_ctx,
 };
 
@@ -77,7 +61,7 @@ hicn_dpo_ctx_t *hicn_strategy_rr_ctx_get (index_t index);
  * @param dpo_idx index_t that will hold the index of the created dpo ctx
  * @return HICN_ERROR_NONE if the creation was fine, otherwise EINVAL
  */
-int
+void
 hicn_strategy_rr_ctx_create (dpo_proto_t proto, const dpo_id_t * next_hop,
 			     int nh_len, index_t * dpo_idx);
 
@@ -104,9 +88,7 @@ int hicn_strategy_rr_ctx_add_nh (const dpo_id_t * nh, index_t dpo_idx);
  * @return HICN_ERROR_NONE if the update or insert was fine,
  * otherwise HICN_ERROR_DPO_CTS_NOT_FOUND
  */
-int
-hicn_strategy_rr_ctx_del_nh (hicn_face_id_t face_id, index_t dpo_idx,
-			     fib_prefix_t * fib_pfx);
+int hicn_strategy_rr_ctx_del_nh (hicn_face_id_t face_id, index_t dpo_idx);
 
 /**
  * @brief Prefetch a dpo
@@ -115,14 +97,40 @@ hicn_strategy_rr_ctx_del_nh (hicn_face_id_t face_id, index_t dpo_idx,
  */
 void hicn_strategy_rr_ctx_prefetch (index_t dpo_idx);
 
+/**
+ * @brief Return true if the dpo is of type strategy rr
+ *
+ * @param dpo Dpo to check the type
+ */
 int hicn_dpo_is_type_strategy_rr (const dpo_id_t * dpo);
 
+/**
+ * @brief Initialize the Round Robin strategy
+ */
 void hicn_dpo_strategy_rr_module_init (void);
 
+/**
+ * @brief Return the dpo type for the Round Robin strategy
+ */
 dpo_type_t hicn_dpo_strategy_rr_get_type (void);
 
+/**
+ * @brief Format the dpo ctx for the strategy Round Robin
+ *
+ * @param s String to append the formatted dpo ctx
+ * @param ap List of arguments to format
+ */
 u8 *format_hicn_dpo_strategy_rr (u8 * s, va_list * ap);
 
+/**
+ * @brief Format the dpo ctx for the strategy Round Robin. To
+ * call from other functions
+ *
+ * @param s String to append the formatted dpo ctx
+ * @param ... List of arguments to format
+ */
+u8 *hicn_strategy_rr_format_ctx (u8 * s, int n, ...);
+
 
 #endif // __HICN_DPO_RR_H__
 
diff --git a/hicn-plugin/src/strategies/strategy_mw.c b/hicn-plugin/src/strategies/strategy_mw.c
index 40e062bd8..2422d4fed 100644
--- a/hicn-plugin/src/strategies/strategy_mw.c
+++ b/hicn-plugin/src/strategies/strategy_mw.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2017-2019 Cisco and/or its affiliates.
+ * Copyright (c) 2017-2020 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:
@@ -12,16 +12,11 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-
-#include <vlib/vlib.h>
-#include <vnet/vnet.h>
-
+#include "dpo_mw.h"
 #include "../strategy.h"
 #include "../strategy_dpo_ctx.h"
-#include "dpo_mw.h"
 #include "../faces/face.h"
-#include "../route.h"
-#include "../pcs.h"
+#include "../hashtb.h"
 #include "../strategy_dpo_manager.h"
 
 /* Simple strategy that chooses the next hop with the maximum weight */
@@ -32,20 +27,17 @@ void hicn_on_interest_timeout_mw (index_t dpo_idx);
 u32 hicn_select_next_hop_mw (index_t dpo_idx, int *nh_idx,
 			     dpo_id_t ** outface);
 u32 get_strategy_node_index_mw (void);
+u8 *hicn_strategy_format_trace_mw (u8 * s, hicn_strategy_trace_t * t);
+u8 *hicn_strategy_format_mw (u8 * s, va_list * ap);
+
 
 static hicn_strategy_vft_t hicn_strategy_mw_vft = {
   .hicn_receive_data = &hicn_receive_data_mw,
   .hicn_add_interest = &hicn_add_interest_mw,
   .hicn_on_interest_timeout = &hicn_on_interest_timeout_mw,
   .hicn_select_next_hop = &hicn_select_next_hop_mw,
-  .get_strategy_node_index = get_strategy_node_index_mw
-};
-
-/* Stats string values */
-static char *hicn_strategy_error_strings[] = {
-#define _(sym, string) string,
-  foreach_hicnfwd_error
-#undef _
+  .hicn_format_strategy_trace = hicn_strategy_format_trace_mw,
+  .hicn_format_strategy = &hicn_strategy_format_mw
 };
 
 /*
@@ -57,29 +49,22 @@ hicn_mw_strategy_get_vft (void)
   return &hicn_strategy_mw_vft;
 }
 
-/* Registration struct for a graph node */
-vlib_node_registration_t hicn_mw_strategy_node;
-
-u32
-get_strategy_node_index_mw (void)
-{
-  return hicn_mw_strategy_node.index;
-}
-
 /* DPO should be give in input as it containes all the information to calculate the next hops*/
 u32
 hicn_select_next_hop_mw (index_t dpo_idx, int *nh_idx, dpo_id_t ** outface)
 {
-  hicn_strategy_mw_ctx_t *hicn_strategy_mw_ctx =
-    (hicn_strategy_mw_ctx_t *) hicn_strategy_mw_ctx_get (dpo_idx);
+  hicn_dpo_ctx_t *dpo_ctx = hicn_strategy_dpo_ctx_get (dpo_idx);
 
-  if(hicn_strategy_mw_ctx == NULL)
+  if (dpo_ctx == NULL)
     return HICN_ERROR_STRATEGY_NOT_FOUND;
 
+  hicn_strategy_mw_ctx_t *hicn_strategy_mw_ctx =
+    (hicn_strategy_mw_ctx_t *) dpo_ctx->data;
+
   u8 next_hop_index = 0;
-  for (int i = 0; i < hicn_strategy_mw_ctx->default_ctx.entry_count; i++)
+  for (int i = 0; i < dpo_ctx->entry_count; i++)
     {
-      if (dpo_id_is_valid (&hicn_strategy_mw_ctx->default_ctx.next_hops[i]))
+      if (dpo_id_is_valid (&dpo_ctx->next_hops[i]))
 	{
 	  if (hicn_strategy_mw_ctx->weight[next_hop_index] <
 	      hicn_strategy_mw_ctx->weight[i])
@@ -89,33 +74,21 @@ hicn_select_next_hop_mw (index_t dpo_idx, int *nh_idx, dpo_id_t ** outface)
 	}
     }
 
-  if (!dpo_id_is_valid
-      (&hicn_strategy_mw_ctx->default_ctx.next_hops[next_hop_index]))
+  if (!dpo_id_is_valid (&dpo_ctx->next_hops[next_hop_index]))
     return HICN_ERROR_STRATEGY_NH_NOT_FOUND;
 
-  *outface =
-    (dpo_id_t *) & hicn_strategy_mw_ctx->default_ctx.
-    next_hops[next_hop_index];
+  *outface = (dpo_id_t *) & dpo_ctx->next_hops[next_hop_index];
 
   return HICN_ERROR_NONE;
 }
 
-uword
-hicn_mw_strategy_node_fn (vlib_main_t * vm,
-			  vlib_node_runtime_t * node, vlib_frame_t * frame)
-{
-  return hicn_forward_interest_fn (vm, node, frame, &hicn_strategy_mw_vft,
-				   hicn_dpo_strategy_mw_get_type (),
-				   &hicn_mw_strategy_node);
-}
-
 void
 hicn_add_interest_mw (index_t dpo_ctx_idx, hicn_hash_entry_t * hash_entry)
 {
   hash_entry->dpo_ctx_id = dpo_ctx_idx;
   dpo_id_t hicn_dpo_id =
     { hicn_dpo_strategy_mw_get_type (), 0, 0, dpo_ctx_idx };
-  hicn_strategy_mw_ctx_lock (&hicn_dpo_id);
+  hicn_strategy_dpo_ctx_lock (&hicn_dpo_id);
   hash_entry->vft_id = hicn_dpo_get_vft_id (&hicn_dpo_id);
 }
 
@@ -132,41 +105,25 @@ hicn_receive_data_mw (index_t dpo_idx, int nh_idx)
 
 
 /* packet trace format function */
-static u8 *
-hicn_strategy_format_trace_mw (u8 * s, va_list * args)
+u8 *
+hicn_strategy_format_trace_mw (u8 * s, hicn_strategy_trace_t * t)
 {
-  CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
-  CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
-  hicn_strategy_trace_t *t = va_arg (*args, hicn_strategy_trace_t *);
-
   s = format (s, "Strategy_mw: pkt: %d, sw_if_index %d, next index %d",
 	      (int) t->pkt_type, t->sw_if_index, t->next_index);
   return (s);
 }
 
-/*
- * Node registration for the forwarder node
- */
-/* *INDENT-OFF* */
-VLIB_REGISTER_NODE (hicn_mw_strategy_node) =
+u8 *
+hicn_strategy_format_mw (u8 * s, va_list * ap)
 {
-  .name = "hicn-mw-strategy",
-  .function = hicn_mw_strategy_node_fn,
-  .vector_size = sizeof (u32),
-  .runtime_data_bytes = sizeof (int) + sizeof(hicn_pit_cs_t *),
-  .format_trace = hicn_strategy_format_trace_mw,
-  .type = VLIB_NODE_TYPE_INTERNAL,
-  .n_errors = ARRAY_LEN (hicn_strategy_error_strings),
-  .error_strings = hicn_strategy_error_strings,
-  .n_next_nodes = HICN_STRATEGY_N_NEXT,
-  .next_nodes = {
-    [HICN_STRATEGY_NEXT_INTEREST_HITPIT] = "hicn-interest-hitpit",
-    [HICN_STRATEGY_NEXT_INTEREST_HITCS] = "hicn-interest-hitcs",
-    [HICN_STRATEGY_NEXT_ERROR_DROP] = "error-drop",
-    [HICN_STRATEGY_NEXT_EMPTY] = "ip4-lookup",
-  },
-};
-/* *INDENT-ON* */
+
+  u32 indent = va_arg (*ap, u32);
+  s =
+    format (s,
+	    "Static Weights: weights are updated by the control plane, next hop is the one with the maximum weight.\n",
+	    indent);
+  return (s);
+}
 
 /*
  * fd.io coding-style-patch-verification: ON
diff --git a/hicn-plugin/src/strategies/strategy_mw.h b/hicn-plugin/src/strategies/strategy_mw.h
index 10b08c05f..f64f1fdc7 100644
--- a/hicn-plugin/src/strategies/strategy_mw.h
+++ b/hicn-plugin/src/strategies/strategy_mw.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2017-2019 Cisco and/or its affiliates.
+ * Copyright (c) 2017-2020 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:
@@ -18,6 +18,9 @@
 
 #include "../strategy.h"
 
+/**
+ * @brief Return the vft for the Maximum Weight strategy
+ */
 hicn_strategy_vft_t *hicn_mw_strategy_get_vft (void);
 
 #endif // __HICN_STRATEGY_MW_H__
diff --git a/hicn-plugin/src/strategies/strategy_mw_cli.c b/hicn-plugin/src/strategies/strategy_mw_cli.c
index 50d4d21f0..701f96fa7 100644
--- a/hicn-plugin/src/strategies/strategy_mw_cli.c
+++ b/hicn-plugin/src/strategies/strategy_mw_cli.c
@@ -38,8 +38,6 @@ hicn_mw_strategy_cli_set_weight_command_fn (vlib_main_t * vm,
   u32 weight = HICN_PARAM_FIB_ENTRY_NHOP_WGHT_DFLT;
   hicn_dpo_ctx_t *hicn_dpo_ctx;
   const dpo_id_t *hicn_dpo_id;
-  u32 vft_id;
-  const hicn_dpo_vft_t *dpo_vft;
 
   /* Get a line of input. */
   unformat_input_t _line_input, *line_input = &_line_input;
@@ -79,14 +77,14 @@ hicn_mw_strategy_cli_set_weight_command_fn (vlib_main_t * vm,
       goto done;
     }
 
-  prefix.fp_proto = ip46_address_is_ip4(&prefix.fp_addr) ? FIB_PROTOCOL_IP4 : FIB_PROTOCOL_IP6;
+  prefix.fp_proto =
+    ip46_address_is_ip4 (&prefix.
+			 fp_addr) ? FIB_PROTOCOL_IP4 : FIB_PROTOCOL_IP6;
   ret = hicn_route_get_dpo (&prefix, &hicn_dpo_id, &fib_index);
 
   if (ret == HICN_ERROR_NONE)
     {
-      vft_id = hicn_dpo_get_vft_id (hicn_dpo_id);
-      dpo_vft = hicn_dpo_get_vft (vft_id);
-      hicn_dpo_ctx = dpo_vft->hicn_dpo_get_ctx (hicn_dpo_id->dpoi_index);
+      hicn_dpo_ctx = hicn_strategy_dpo_ctx_get (hicn_dpo_id->dpoi_index);
 
       if (hicn_dpo_ctx == NULL
 	  || hicn_dpo_id->dpoi_type != hicn_dpo_strategy_mw_get_type ())
diff --git a/hicn-plugin/src/strategies/strategy_rr.c b/hicn-plugin/src/strategies/strategy_rr.c
index 53b9b688f..cdcca7f2a 100644
--- a/hicn-plugin/src/strategies/strategy_rr.c
+++ b/hicn-plugin/src/strategies/strategy_rr.c
@@ -13,15 +13,11 @@
  * limitations under the License.
  */
 
-#include <vlib/vlib.h>
-#include <vnet/vnet.h>
-
+#include "dpo_rr.h"
 #include "../strategy.h"
 #include "../strategy_dpo_ctx.h"
-#include "dpo_rr.h"
 #include "../faces/face.h"
-#include "../route.h"
-#include "../pcs.h"
+#include "../hashtb.h"
 #include "../strategy_dpo_manager.h"
 
 /* Simple strategy that chooses the next hop with the maximum weight */
@@ -31,21 +27,17 @@ void hicn_add_interest_rr (index_t dpo_idx, hicn_hash_entry_t * pit_entry);
 void hicn_on_interest_timeout_rr (index_t dpo_idx);
 u32 hicn_select_next_hop_rr (index_t dpo_idx, int *nh_idx,
 			     dpo_id_t ** outface);
-u32 get_strategy_node_index_rr (void);
+u8 *hicn_strategy_format_trace_rr (u8 * s, hicn_strategy_trace_t * t);
+u8 *hicn_strategy_format_rr (u8 * s, va_list * ap);
+
 
 static hicn_strategy_vft_t hicn_strategy_rr_vft = {
   .hicn_receive_data = &hicn_receive_data_rr,
   .hicn_add_interest = &hicn_add_interest_rr,
   .hicn_on_interest_timeout = &hicn_on_interest_timeout_rr,
   .hicn_select_next_hop = &hicn_select_next_hop_rr,
-  .get_strategy_node_index = get_strategy_node_index_rr
-};
-
-/* Stats string values */
-static char *hicn_strategy_error_strings[] = {
-#define _(sym, string) string,
-  foreach_hicnfwd_error
-#undef _
+  .hicn_format_strategy_trace = &hicn_strategy_format_trace_rr,
+  .hicn_format_strategy = &hicn_strategy_format_rr
 };
 
 /*
@@ -57,64 +49,48 @@ hicn_rr_strategy_get_vft (void)
   return &hicn_strategy_rr_vft;
 }
 
-/* Registration struct for a graph node */
-vlib_node_registration_t hicn_rr_strategy_node;
-
-u32
-get_strategy_node_index_rr (void)
-{
-  return hicn_rr_strategy_node.index;
-}
-
 /* DPO should be give in input as it containes all the information to calculate the next hops*/
 u32
 hicn_select_next_hop_rr (index_t dpo_idx, int *nh_idx, dpo_id_t ** outface)
 {
+  hicn_dpo_ctx_t *dpo_ctx = hicn_strategy_dpo_ctx_get (dpo_idx);
+
+  if (dpo_ctx == NULL)
+    return HICN_ERROR_STRATEGY_NOT_FOUND;
+
   hicn_strategy_rr_ctx_t *hicn_strategy_rr_ctx =
-    (hicn_strategy_rr_ctx_t *) hicn_strategy_rr_ctx_get (dpo_idx);
+    (hicn_strategy_rr_ctx_t *) dpo_ctx->data;
 
   if (dpo_id_is_valid
-      (&hicn_strategy_rr_ctx->default_ctx.
-       next_hops[hicn_strategy_rr_ctx->current_nhop]))
+      (&dpo_ctx->next_hops[hicn_strategy_rr_ctx->current_nhop]))
     {
       *outface =
-	(dpo_id_t *) & hicn_strategy_rr_ctx->default_ctx.
-	next_hops[hicn_strategy_rr_ctx->current_nhop];
+	(dpo_id_t *) & dpo_ctx->next_hops[hicn_strategy_rr_ctx->current_nhop];
 
     }
   else
     return HICN_ERROR_STRATEGY_NH_NOT_FOUND;
 
   hicn_strategy_rr_ctx->current_nhop =
-    (hicn_strategy_rr_ctx->current_nhop +
-     1) % hicn_strategy_rr_ctx->default_ctx.entry_count;
+    (hicn_strategy_rr_ctx->current_nhop + 1) % dpo_ctx->entry_count;
 
   return HICN_ERROR_NONE;
 }
 
-uword
-hicn_rr_strategy_node_fn (vlib_main_t * vm,
-			  vlib_node_runtime_t * node, vlib_frame_t * frame)
-{
-  return hicn_forward_interest_fn (vm, node, frame, &hicn_strategy_rr_vft,
-				   hicn_dpo_strategy_rr_get_type (),
-				   &hicn_rr_strategy_node);
-}
-
 void
 hicn_add_interest_rr (index_t dpo_ctx_idx, hicn_hash_entry_t * hash_entry)
 {
   hash_entry->dpo_ctx_id = dpo_ctx_idx;
   dpo_id_t hicn_dpo_id =
     { hicn_dpo_strategy_rr_get_type (), 0, 0, dpo_ctx_idx };
-  hicn_strategy_rr_ctx_lock (&hicn_dpo_id);
+  hicn_strategy_dpo_ctx_lock (&hicn_dpo_id);
   hash_entry->vft_id = hicn_dpo_get_vft_id (&hicn_dpo_id);
 }
 
 void
 hicn_on_interest_timeout_rr (index_t dpo_idx)
 {
-  /* Nothign to do in the rr strategy when we receive an interest */
+  /* Nothing to do in the rr strategy when we receive an interest */
 }
 
 void
@@ -124,41 +100,25 @@ hicn_receive_data_rr (index_t dpo_idx, int nh_idx)
 
 
 /* packet trace format function */
-static u8 *
-hicn_strategy_format_trace_rr (u8 * s, va_list * args)
+u8 *
+hicn_strategy_format_trace_rr (u8 * s, hicn_strategy_trace_t * t)
 {
-  CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
-  CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
-  hicn_strategy_trace_t *t = va_arg (*args, hicn_strategy_trace_t *);
-
   s = format (s, "Strategy_rr: pkt: %d, sw_if_index %d, next index %d",
 	      (int) t->pkt_type, t->sw_if_index, t->next_index);
   return (s);
 }
 
-/*
- * Node registration for the forwarder node
- */
-/* *INDENT-OFF* */
-VLIB_REGISTER_NODE (hicn_rr_strategy_node) =
+u8 *
+hicn_strategy_format_rr (u8 * s, va_list * ap)
 {
-  .name = "hicn-rr-strategy",
-  .function = hicn_rr_strategy_node_fn,
-  .vector_size = sizeof (u32),
-  .runtime_data_bytes = sizeof (int) + sizeof(hicn_pit_cs_t *),
-  .format_trace = hicn_strategy_format_trace_rr,
-  .type = VLIB_NODE_TYPE_INTERNAL,
-  .n_errors = ARRAY_LEN (hicn_strategy_error_strings),
-  .error_strings = hicn_strategy_error_strings,
-  .n_next_nodes = HICN_STRATEGY_N_NEXT,
-  .next_nodes = {
-    [HICN_STRATEGY_NEXT_INTEREST_HITPIT] = "hicn-interest-hitpit",
-    [HICN_STRATEGY_NEXT_INTEREST_HITCS] = "hicn-interest-hitcs",
-    [HICN_STRATEGY_NEXT_ERROR_DROP] = "error-drop",
-    [HICN_STRATEGY_NEXT_EMPTY] = "ip4-lookup",
-  },
-};
-/* *INDENT-ON* */
+
+  u32 indent = va_arg (*ap, u32);
+  s =
+    format (s,
+	    "Round Robin: next hop is chosen ciclying between all the available next hops, one after the other.\n",
+	    indent);
+  return (s);
+}
 
 /*
  * fd.io coding-style-patch-verification: ON
diff --git a/hicn-plugin/src/strategies/strategy_rr.h b/hicn-plugin/src/strategies/strategy_rr.h
index 84149c36f..3936845fe 100644
--- a/hicn-plugin/src/strategies/strategy_rr.h
+++ b/hicn-plugin/src/strategies/strategy_rr.h
@@ -18,6 +18,9 @@
 
 #include "../strategy.h"
 
+/**
+ * @brief Return the vft for the Round Robin strategy
+ */
 hicn_strategy_vft_t *hicn_rr_strategy_get_vft (void);
 
 #endif // __HICN_STRATEGY_RR_H__
diff --git a/hicn-plugin/src/strategy.h b/hicn-plugin/src/strategy.h
index 19eee72c5..c18ae4eea 100644
--- a/hicn-plugin/src/strategy.h
+++ b/hicn-plugin/src/strategy.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2017-2019 Cisco and/or its affiliates.
+ * Copyright (c) 2017-2020 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:
@@ -24,10 +24,13 @@
 /**
  * @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.
+ * A strategy is defined as a dpo and a set of function (vft) that will be called
+ * during the packet processing. A strategy is associated to an entry in the fib by
+ * assigning the corresponding dpo to the fib entry. The dpo points to a hICN dpo
+ * context (ctx) which contains the information needed by the strategy to compute
+ * the next hop. Each strategy hash its own dpo type, which means that the dpo_type
+ * uniquely identify a strategy and its vft. The strategy node will use the dpo_type
+ * to retrieve the corresponding vft.
  * Here we provide:
  * - a template for the callbacks to implement in order to create a new strategy
  *   (hicn_fwd_strategy_t)
@@ -36,6 +39,15 @@
  *    interest and calling hicn_select_next_hop)
  */
 
+/* Trace context struct */
+typedef struct
+{
+  u32 next_index;
+  u32 sw_if_index;
+  u8 pkt_type;
+  dpo_type_t dpo_type;
+} hicn_strategy_trace_t;
+
 typedef struct hicn_strategy_vft_s
 {
   void (*hicn_receive_data) (index_t dpo_idx, int nh_idx);
@@ -43,39 +55,21 @@ typedef struct hicn_strategy_vft_s
   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 */
+  u8 *(*hicn_format_strategy_trace) (u8 *, hicn_strategy_trace_t *);
+  u8 *(*hicn_format_strategy) (u8 * s, va_list * ap);
+  /**< Format an hICN dpo*/
 } 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,
-			  dpo_type_t dpo_type,
-			  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_INTEREST_HITCS,
   HICN_STRATEGY_NEXT_ERROR_DROP,
-  HICN_STRATEGY_NEXT_EMPTY,
   HICN_STRATEGY_N_NEXT,
 } hicn_strategy_next_t;
 
+extern vlib_node_registration_t hicn_strategy_node;
+
 #endif /* //__HICN_STRATEGY__ */
 
 /*
diff --git a/hicn-plugin/src/strategy_dpo_ctx.c b/hicn-plugin/src/strategy_dpo_ctx.c
new file mode 100644
index 000000000..6ec1407fb
--- /dev/null
+++ b/hicn-plugin/src/strategy_dpo_ctx.c
@@ -0,0 +1,163 @@
+/*
+ * Copyright (c) 2020 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.
+ */
+
+#include "strategy_dpo_ctx.h"
+#include "strategy_dpo_manager.h"
+
+hicn_dpo_ctx_t *hicn_strategy_dpo_ctx_pool;
+
+void
+hicn_strategy_init_dpo_ctx_pool ()
+{
+  pool_init_fixed (hicn_strategy_dpo_ctx_pool, 256);
+
+}
+
+void
+hicn_strategy_dpo_ctx_lock (dpo_id_t * dpo)
+{
+  hicn_dpo_ctx_t *dpo_ctx = hicn_strategy_dpo_ctx_get (dpo->dpoi_index);
+
+  if (dpo_ctx != NULL)
+    {
+      dpo_ctx->locks++;
+    }
+}
+
+void
+hicn_strategy_dpo_ctx_unlock (dpo_id_t * dpo)
+{
+  hicn_dpo_ctx_t *hicn_strategy_dpo_ctx =
+    (hicn_dpo_ctx_t *) hicn_strategy_dpo_ctx_get (dpo->dpoi_index);
+
+  if (hicn_strategy_dpo_ctx != NULL)
+    {
+      hicn_strategy_dpo_ctx->locks--;
+
+      if (0 == hicn_strategy_dpo_ctx->locks)
+	{
+	  pool_put (hicn_strategy_dpo_ctx_pool, hicn_strategy_dpo_ctx);
+	}
+    }
+}
+
+u8 *
+hicn_strategy_dpo_format_ctx (u8 * s, va_list * ap)
+{
+  index_t index = va_arg (*ap, index_t);
+  hicn_dpo_ctx_t *dpo = NULL;
+  u32 indent = va_arg (*ap, u32);
+
+  dpo = (hicn_dpo_ctx_t *) hicn_strategy_dpo_ctx_get (index);
+
+  const hicn_dpo_vft_t *dpo_vft = hicn_dpo_get_vft (dpo->dpo_type);
+
+  s = dpo_vft->hicn_dpo_format (s, 2, index, indent);
+
+  return (s);
+}
+
+index_t
+hicn_strategy_dpo_ctx_get_index (hicn_dpo_ctx_t * cd)
+{
+  return (cd - hicn_strategy_dpo_ctx_pool);
+}
+
+hicn_dpo_ctx_t *
+hicn_strategy_dpo_ctx_get (index_t index)
+{
+  hicn_dpo_ctx_t *hicn_strategy_dpo_ctx = NULL;
+  if (!pool_is_free_index (hicn_strategy_dpo_ctx_pool, index))
+    {
+      hicn_strategy_dpo_ctx =
+	(pool_elt_at_index (hicn_strategy_dpo_ctx_pool, index));
+    }
+
+  return hicn_strategy_dpo_ctx;
+}
+
+hicn_dpo_ctx_t *
+hicn_strategy_dpo_ctx_alloc ()
+{
+  hicn_dpo_ctx_t *dpo_ctx;
+  pool_get (hicn_strategy_dpo_ctx_pool, dpo_ctx);
+  return dpo_ctx;
+}
+
+int
+hicn_strategy_dpo_ctx_add_nh (const dpo_id_t * nh, hicn_dpo_ctx_t * dpo_ctx,
+			      u8 * pos)
+{
+
+  int empty = dpo_ctx->entry_count;
+
+  /* Iterate through the list of faces to find if the face is already a next hop */
+  for (int i = 0; i < dpo_ctx->entry_count; i++)
+    {
+      if (!memcmp (nh, &dpo_ctx->next_hops[i], sizeof (dpo_id_t)))
+	{
+	  /* If face is marked as deleted, ignore it */
+	  hicn_face_t *face =
+	    hicn_dpoi_get_from_idx (dpo_ctx->next_hops[i].dpoi_index);
+	  if (face->shared.flags & HICN_FACE_FLAGS_DELETED)
+	    {
+	      continue;
+	    }
+	  return HICN_ERROR_DPO_CTX_NHOPS_EXISTS;
+	}
+    }
+
+  /* Get an empty place */
+  if (empty > HICN_PARAM_FIB_ENTRY_NHOPS_MAX)
+    {
+      return HICN_ERROR_DPO_CTX_NHOPS_NS;
+    }
+
+  clib_memcpy (&dpo_ctx->next_hops[empty], nh, sizeof (dpo_id_t));
+  dpo_ctx->entry_count++;
+  *pos = empty;
+
+  return HICN_ERROR_NONE;
+}
+
+int
+hicn_strategy_dpo_ctx_del_nh (hicn_face_id_t face_id,
+			      hicn_dpo_ctx_t * dpo_ctx)
+{
+  int ret = HICN_ERROR_DPO_CTX_NOT_FOUND;
+  dpo_id_t invalid = NEXT_HOP_INVALID;
+
+  for (int i = 0; i < dpo_ctx->entry_count; i++)
+    {
+      if (dpo_ctx->next_hops[i].dpoi_index == face_id)
+	{
+	  hicn_face_unlock (&dpo_ctx->next_hops[i]);
+	  dpo_ctx->entry_count--;
+	  dpo_ctx->next_hops[i] = dpo_ctx->next_hops[dpo_ctx->entry_count];
+	  dpo_ctx->next_hops[dpo_ctx->entry_count] = invalid;
+	  ret = HICN_ERROR_NONE;
+	  break;
+	}
+    }
+
+  return ret;
+
+}
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables: eval: (c-set-style "gnu") End:
+ */
diff --git a/hicn-plugin/src/strategy_dpo_ctx.h b/hicn-plugin/src/strategy_dpo_ctx.h
index 00b11412b..737071766 100644
--- a/hicn-plugin/src/strategy_dpo_ctx.h
+++ b/hicn-plugin/src/strategy_dpo_ctx.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2017-2019 Cisco and/or its affiliates.
+ * Copyright (c) 2017-2020 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:
@@ -22,15 +22,21 @@
 #include "params.h"
 #include "faces/face.h"
 
+//FIB table for hicn. 0 is the default one used by ip
 #define HICN_FIB_TABLE 0
 
-#define DATA_LEN 8
-
 #define NEXT_HOP_INVALID DPO_INVALID
 
 #define INIT_SEQ 0
-/*
- * An hicn dpo is a list of next hops (face + weight).
+
+/**
+ * @brief Definition of the general hICN DPO ctx (shared among all the strategies).
+ *
+ * An hICN DPO ctx contains the list of next hops, auxiliaries fields to maintain the dpo, map-me
+ * specifics (tfib_entry_count and seq), the dpo_type and 64B to let each strategy to store additional
+ * information. Each next hop is a dpo_id_t that refers to an hICN face. The dpo_type is used to
+ * identify the strategy and to retrieve the vft corresponding to the strategy (see strategy.h)
+ * and to the dpo ctx (see strategy_dpo_manager.h)
  */
 typedef struct __attribute__ ((packed)) hicn_dpo_ctx_s
 {
@@ -48,39 +54,121 @@ typedef struct __attribute__ ((packed)) hicn_dpo_ctx_s
   /* 46B + 2B = 48B */
   u16 padding;			/* To align to 8B */
 
-#ifdef HICN_MAPME_NOTIFICATIONS
-  /* (8B) last acked update for IU/IN heuristic on producer */
-  f64 last_iu_ack;
-#endif
-  /* (4B) last sequence number */
+  /* 48 + 4B = 52; last sequence number */
   seq_t seq;
 
+  /* 48 + 1B = 53; last sequence number */
+  dpo_type_t dpo_type;
+
+  CLIB_CACHE_LINE_ALIGN_MARK (cacheline1);
+  u8 data[CLIB_CACHE_LINE_BYTES];
+
 } hicn_dpo_ctx_t;
 
+extern hicn_dpo_ctx_t *hicn_strategy_dpo_ctx_pool;
+
+/**
+ * @brief Initialize the hICN dpo ctx
+ *
+ * @param dpo_ctx Pointer to the hICN dpo ctx to initialize
+ * @param next_hop List of netx hops to store in the dpo ctx
+ * @param nh_len Number of elements in the list of next hops
+ * @param dpo_type Type of dpo. It identifies the strategy.
+ */
 always_inline void
-init_dpo_ctx (hicn_dpo_ctx_t * dpo_ctx)
+init_dpo_ctx (hicn_dpo_ctx_t * dpo_ctx, const dpo_id_t * next_hop,
+	      int nh_len, dpo_type_t dpo_type)
 {
   dpo_id_t invalid = NEXT_HOP_INVALID;
 
-  for (int i = 0; i < HICN_PARAM_FIB_ENTRY_NHOPS_MAX; i++)
-    {
-      dpo_ctx->next_hops[i] = invalid;
-    }
-
   dpo_ctx->entry_count = 0;
   dpo_ctx->locks = 0;
 
   dpo_ctx->tfib_entry_count = 0;
 
-#ifdef HICN_MAPME_NOTIFICATIONS
-  last_iu_ack = 0;
-#endif
-
   dpo_ctx->seq = INIT_SEQ;
+  dpo_ctx->dpo_type = dpo_type;
+
+  for (int i = 0; i < HICN_PARAM_FIB_ENTRY_NHOPS_MAX && i < nh_len; i++)
+    {
+      clib_memcpy (&dpo_ctx->next_hops[i], &next_hop[i], sizeof (dpo_id_t));
+      dpo_ctx->entry_count++;
+    }
+
+
+  for (int i = nh_len; i < HICN_PARAM_FIB_ENTRY_NHOPS_MAX; i++)
+    {
+      dpo_ctx->next_hops[i] = invalid;
+    }
+
 }
 
-STATIC_ASSERT (sizeof (hicn_dpo_ctx_t) <= CLIB_CACHE_LINE_BYTES,
-	       "sizeof hicn_dpo_ctx_t is greater than 64B");
+/**
+ * @brief Initialize the pool containing the hICN dpo ctx
+ *
+ */
+void hicn_strategy_init_dpo_ctx_pool (void);
+
+/**
+ * @brief Allocate a new hICN dpo ctx from the pool
+ */
+hicn_dpo_ctx_t *hicn_strategy_dpo_ctx_alloc ();
+
+/**
+ * @brief Retrieve an existing hICN dpo ctx from the pool
+ */
+hicn_dpo_ctx_t *hicn_strategy_dpo_ctx_get (index_t index);
+
+/**
+ * @brief Retrieve the index of the hICN dpo ctx
+ */
+index_t hicn_strategy_dpo_ctx_get_index (hicn_dpo_ctx_t * cd);
+
+/**
+ * @brief Lock the dpo of a strategy ctx
+ *
+ * @param dpo Identifier of the dpo of the strategy ctx
+ */
+void hicn_strategy_dpo_ctx_lock (dpo_id_t * dpo);
+
+/**
+ * @brief Unlock the dpo of a strategy ctx
+ *
+ * @param dpo Identifier of the dpo of the strategy ctx
+ */
+void hicn_strategy_dpo_ctx_unlock (dpo_id_t * dpo);
+
+/**
+ * @brief Add or update a next hop in the dpo ctx.
+ *
+ * This function is meant to be used in the control plane and not in the data plane,
+ * as it is not optimized for the latter.
+ *
+ * @param nh Next hop to insert in the dpo ctx
+ * @param dpo_ctx Dpo ctx to update with the new or updated next hop
+ * @param pos Return the position of the nh that has been added
+ * @return HICN_ERROR_NONE if the update or insert was fine,
+ * otherwise HICN_ERROR_DPO_CTX_NOT_FOUND
+ */
+int
+hicn_strategy_dpo_ctx_add_nh (const dpo_id_t * nh, hicn_dpo_ctx_t * dpo_ctx,
+			      u8 * pos);
+
+/**
+ * @brief Delete a next hop in the dpo ctx.
+ *
+ * @param face_id Face identifier of the next hop
+ * @param dpo_ctx Dpo ctx to update by removing the face
+ * @return HICN_ERROR_NONE if the update or insert was fine,
+ * otherwise HICN_ERROR_DPO_CTS_NOT_FOUND
+ */
+int
+hicn_strategy_dpo_ctx_del_nh (hicn_face_id_t face_id,
+			      hicn_dpo_ctx_t * dpo_ctx);
+
+
+STATIC_ASSERT (sizeof (hicn_dpo_ctx_t) <= 2 * CLIB_CACHE_LINE_BYTES,
+	       "sizeof hicn_dpo_ctx_t is greater than 128B");
 
 #endif /* // __HICN_STRATEGY_DPO_CTX_H__ */
 
diff --git a/hicn-plugin/src/strategy_dpo_manager.c b/hicn-plugin/src/strategy_dpo_manager.c
index 470d8d185..f8d41a372 100644
--- a/hicn-plugin/src/strategy_dpo_manager.c
+++ b/hicn-plugin/src/strategy_dpo_manager.c
@@ -16,6 +16,7 @@
 #include <vnet/dpo/dpo.h>
 
 #include "strategy_dpo_manager.h"
+#include "strategy_dpo_ctx.h"
 #include "strategies/dpo_mw.h"
 #include "strategies/dpo_rr.h"
 #include "strategy.h"
@@ -94,19 +95,17 @@ hicn_dpo_get_strategy_vft_from_id (u8 vfts_id)
 void
 hicn_dpos_init (void)
 {
+  hicn_strategy_init_dpo_ctx_pool ();
   hicn_dpo_strategy_mw_module_init ();
   hicn_dpo_strategy_rr_module_init ();
 
-  default_dpo.hicn_dpo_get_ctx = &hicn_strategy_mw_ctx_get;
   default_dpo.hicn_dpo_is_type = &hicn_dpo_is_type_strategy_mw;
   default_dpo.hicn_dpo_get_type = &hicn_dpo_strategy_mw_get_type;
   default_dpo.hicn_dpo_module_init = &hicn_dpo_strategy_mw_module_init;
   default_dpo.hicn_dpo_create = &hicn_strategy_mw_ctx_create;
   default_dpo.hicn_dpo_add_update_nh = &hicn_strategy_mw_ctx_add_nh;
   default_dpo.hicn_dpo_del_nh = &hicn_strategy_mw_ctx_del_nh;
-  default_dpo.hicn_dpo_lock_dpo_ctx = &hicn_strategy_mw_ctx_lock;
-  default_dpo.hicn_dpo_unlock_dpo_ctx = hicn_strategy_mw_ctx_unlock;
-  default_dpo.format_hicn_dpo = &format_hicn_strategy_mw_ctx;
+  default_dpo.hicn_dpo_format = &hicn_strategy_mw_format_ctx;
 }
 
 u8 *
@@ -117,13 +116,13 @@ format_hicn_strategy_list (u8 * s, int n, ...)
   u32 indent = va_arg (ap, u32);
   va_end (ap);
 
-  s = format (s, "Strategies:\n", indent);
+  s = format (s, "%U Strategies:\n", format_white_space, indent);
   indent += 4;
   int i;
   vec_foreach_index (i, strategies_id)
   {
-    s = format (s, "(%d) ", i, indent);
-    s = hicn_dpo_vfts[strategies_id[i]]->format_hicn_dpo (s, &ap);
+    s = format (s, "%U (%d) ", format_white_space, indent, i);
+    s = hicn_strategy_vfts[strategies_id[i]]->hicn_format_strategy (s, &ap);
   }
 
   return (s);
diff --git a/hicn-plugin/src/strategy_dpo_manager.h b/hicn-plugin/src/strategy_dpo_manager.h
index 686c2f8c8..63fcb930b 100644
--- a/hicn-plugin/src/strategy_dpo_manager.h
+++ b/hicn-plugin/src/strategy_dpo_manager.h
@@ -29,21 +29,16 @@
  */
 typedef struct hicn_dpo_vft_s
 {
-  hicn_dpo_ctx_t *(*hicn_dpo_get_ctx) (index_t dpo_idx);	/**< Retrieve the dpo ctx*/
   int (*hicn_dpo_is_type) (const dpo_id_t * dpo);
 	/**< Check if the type of the
            hICN DPO is the expected */
     dpo_type_t (*hicn_dpo_get_type) (void);
 	/**< Return the type of the hICN dpo */
   void (*hicn_dpo_module_init) (void);			/**< Initialize the hICN dpo */
-  int (*hicn_dpo_create) (dpo_proto_t proto, const dpo_id_t * nh, int nh_len, index_t * dpo_idx);			/**< Create the context of the hICN dpo */
+  void (*hicn_dpo_create) (dpo_proto_t proto, const dpo_id_t * nh, int nh_len, index_t * dpo_idx);			/**< Create the context of the hICN dpo */
   int (*hicn_dpo_add_update_nh) (const dpo_id_t * nh, index_t dpo_idx);				/**< Add a next hop to the hICN dpo context */
-  int (*hicn_dpo_del_nh) (hicn_face_id_t face_id, index_t dpo_idx,
-			  fib_prefix_t * fib_pfx);
-	/**< Add a next hop to the hICN dpo context */
-  void (*hicn_dpo_lock_dpo_ctx) (dpo_id_t * dpo);
-  void (*hicn_dpo_unlock_dpo_ctx) (dpo_id_t * dpo);
-  u8 *(*format_hicn_dpo) (u8 * s, va_list * ap);
+  int (*hicn_dpo_del_nh) (hicn_face_id_t face_id, index_t dpo_idx);
+  u8 *(*hicn_dpo_format) (u8 * s, int, ...);
 	/**< Format an hICN dpo*/
 } hicn_dpo_vft_t;
 
@@ -53,6 +48,21 @@ typedef struct hicn_dpo_vft_s
  */
 extern hicn_dpo_vft_t default_dpo;
 
+const static char *const hicn_ip6_nodes[] = {
+  "hicn-iface-ip6-input",	// this is the name you give your node in VLIB_REGISTER_NODE
+  NULL,
+};
+
+const static char *const hicn_ip4_nodes[] = {
+  "hicn-iface-ip4-input",	// this is the name you give your node in VLIB_REGISTER_NODE
+  NULL,
+};
+
+const static char *const *const hicn_nodes_strategy[DPO_PROTO_NUM] = {
+  [DPO_PROTO_IP6] = hicn_ip6_nodes,
+  [DPO_PROTO_IP4] = hicn_ip4_nodes,
+};
+
 /**
  *  @brief Register a new hICN dpo to the manager.
  *
diff --git a/hicn-plugin/src/strategy.c b/hicn-plugin/src/strategy_node.c
index 15c0dc720..27d1e2a03 100644
--- a/hicn-plugin/src/strategy.c
+++ b/hicn-plugin/src/strategy_node.c
@@ -25,6 +25,10 @@
 #include "mgmt.h"
 #include "pcs.h"
 #include "state.h"
+#include "strategies/strategy_mw.h"
+
+/* Registration struct for a graph node */
+vlib_node_registration_t hicn_strategy_node;
 
 /*
  * Node context data (to be used in all the strategy nodes); we think this is
@@ -36,11 +40,32 @@ typedef struct hicn_strategy_runtime_s
   hicn_pit_cs_t *pitcs;
 } hicn_strategy_runtime_t;
 
+/* Stats string values */
+static char *hicn_strategy_error_strings[] = {
+#define _(sym, string) string,
+  foreach_hicnfwd_error
+#undef _
+};
+
+/* packet trace format function */
+u8 *
+hicn_strategy_format_trace (u8 * s, va_list * args)
+{
+  CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
+  CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
+  hicn_strategy_trace_t *t = va_arg (*args, hicn_strategy_trace_t *);
+
+  const hicn_strategy_vft_t *vft = hicn_dpo_get_strategy_vft (t->dpo_type);
+
+  return vft->hicn_format_strategy_trace (s, t);
+}
+
+
 always_inline int
 hicn_new_interest (hicn_strategy_runtime_t * rt, vlib_buffer_t * b0,
 		   u32 * next, f64 tnow, u8 * nameptr,
 		   u16 namelen, dpo_id_t * outface, int nh_idx,
-		   index_t hicn_dpo_idx, hicn_strategy_vft_t * strategy,
+		   index_t dpo_ctx_id0, const hicn_strategy_vft_t * strategy,
 		   dpo_type_t dpo_type, u8 isv6,
 		   vl_api_hicn_api_node_stats_get_reply_t * stats)
 {
@@ -51,7 +76,6 @@ hicn_new_interest (hicn_strategy_runtime_t * rt, vlib_buffer_t * b0,
   hicn_main_t *sm = &hicn_main;
   hicn_buffer_t *hicnb0 = hicn_get_buffer (b0);
   u32 node_id0 = 0;
-  u8 dpo_ctx_id0 = vnet_buffer (b0)->ip.adj_index[VLIB_TX];
   u8 vft_id0 = dpo_type;
   u8 is_cs0 = 0;
   u8 hash_entry_id = 0;
@@ -142,24 +166,20 @@ hicn_new_interest (hicn_strategy_runtime_t * rt, vlib_buffer_t * b0,
  * ipv6/tcp
  */
 uword
-hicn_forward_interest_fn (vlib_main_t * vm,
-			  vlib_node_runtime_t * node,
-			  vlib_frame_t * frame,
-			  hicn_strategy_vft_t * strategy,
-			  dpo_type_t dpo_type,
-			  vlib_node_registration_t * hicn_strategy_node)
+hicn_strategy_fn (vlib_main_t * vm,
+		  vlib_node_runtime_t * node, vlib_frame_t * frame)
 {
 
   u32 n_left_from, *from, *to_next, n_left_to_next;
   hicn_strategy_next_t next_index;
-  hicn_strategy_runtime_t *rt;
+  hicn_strategy_runtime_t *rt = NULL;
   vl_api_hicn_api_node_stats_get_reply_t stats = { 0 };
   f64 tnow;
 
   from = vlib_frame_vector_args (frame);
   n_left_from = frame->n_vectors;
   next_index = (hicn_strategy_next_t) node->cached_next_index;
-  rt = vlib_node_get_runtime_data (vm, hicn_strategy_node->index);
+  rt = vlib_node_get_runtime_data (vm, hicn_strategy_node.index);
   rt->pitcs = &hicn_main.pitcs;
   /* Capture time in vpp terms */
   tnow = vlib_time_now (vm);
@@ -202,6 +222,12 @@ hicn_forward_interest_fn (vlib_main_t * vm,
 	  b0 = vlib_get_buffer (vm, bi0);
 	  next0 = HICN_STRATEGY_NEXT_ERROR_DROP;
 
+	  hicn_dpo_ctx_t *dpo_ctx =
+	    hicn_strategy_dpo_ctx_get (vnet_buffer (b0)->ip.
+				       adj_index[VLIB_TX]);
+	  const hicn_strategy_vft_t *strategy =
+	    hicn_dpo_get_strategy_vft (dpo_ctx->dpo_type);
+
 	  ret = hicn_interest_parse_pkt (b0, &name, &namelen, &hicn0, &isv6);
 	  stats.pkts_processed++;
 	  /* Select next hop */
@@ -212,8 +238,9 @@ hicn_forward_interest_fn (vlib_main_t * vm,
 	   */
 	  if (PREDICT_TRUE
 	      (ret == HICN_ERROR_NONE && HICN_IS_NAMEHASH_CACHED (b0)
-	       && strategy->hicn_select_next_hop (vnet_buffer (b0)->ip.
-						  adj_index[VLIB_TX], &nh_idx,
+	       && strategy->hicn_select_next_hop (vnet_buffer (b0)->
+						  ip.adj_index[VLIB_TX],
+						  &nh_idx,
 						  &outface) ==
 	       HICN_ERROR_NONE))
 	    {
@@ -226,7 +253,7 @@ hicn_forward_interest_fn (vlib_main_t * vm,
 	      hicn_new_interest (rt, b0, &next0, tnow, nameptr, namelen,
 				 outface, nh_idx,
 				 vnet_buffer (b0)->ip.adj_index[VLIB_TX],
-				 strategy, dpo_type, isv6, &stats);
+				 strategy, dpo_ctx->dpo_type, isv6, &stats);
 	    }
 	  /* Maybe trace */
 	  if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE) &&
@@ -237,6 +264,7 @@ hicn_forward_interest_fn (vlib_main_t * vm,
 	      t->pkt_type = HICN_PKT_TYPE_CONTENT;
 	      t->sw_if_index = vnet_buffer (b0)->sw_if_index[VLIB_RX];
 	      t->next_index = next0;
+	      t->dpo_type = dpo_ctx->dpo_type;
 	    }
 	  /*
 	   * Verify speculative enqueue, maybe switch current
@@ -254,9 +282,9 @@ hicn_forward_interest_fn (vlib_main_t * vm,
       vlib_put_next_frame (vm, node, next_index, n_left_to_next);
     }
 
-  vlib_node_increment_counter (vm, hicn_strategy_node->index,
+  vlib_node_increment_counter (vm, hicn_strategy_node.index,
 			       HICNFWD_ERROR_PROCESSED, stats.pkts_processed);
-  vlib_node_increment_counter (vm, hicn_strategy_node->index,
+  vlib_node_increment_counter (vm, hicn_strategy_node.index,
 			       HICNFWD_ERROR_INTERESTS,
 			       stats.pkts_interest_count);
 
@@ -264,6 +292,30 @@ hicn_forward_interest_fn (vlib_main_t * vm,
 }
 
 /*
+ * Node registration for the forwarder node
+ */
+/* *INDENT-OFF* */
+VLIB_REGISTER_NODE (hicn_strategy_node) =
+  {
+   .name = "hicn-strategy",
+   .function = hicn_strategy_fn,
+   .vector_size = sizeof (u32),
+   .runtime_data_bytes = sizeof (int) + sizeof(hicn_pit_cs_t *),
+   .format_trace = hicn_strategy_format_trace,
+   .type = VLIB_NODE_TYPE_INTERNAL,
+   .n_errors = ARRAY_LEN (hicn_strategy_error_strings),
+   .error_strings = hicn_strategy_error_strings,
+   .n_next_nodes = HICN_STRATEGY_N_NEXT,
+   .next_nodes =
+   {
+    [HICN_STRATEGY_NEXT_INTEREST_HITPIT] = "hicn-interest-hitpit",
+    [HICN_STRATEGY_NEXT_INTEREST_HITCS] = "hicn-interest-hitcs",
+    [HICN_STRATEGY_NEXT_ERROR_DROP] = "error-drop",
+   },
+  };
+
+
+/*
  * fd.io coding-style-patch-verification: ON
  *
  * Local Variables: eval: (c-set-style "gnu") End: