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diff --git a/hicn-plugin/src/infra.h b/hicn-plugin/src/infra.h
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+/*
+ * Copyright (c) 2017-2019 Cisco and/or its affiliates.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef __HICN_INFRA_H__
+#define __HICN_INFRA_H__
+
+#include <vlib/vlib.h>
+#include <vnet/vnet.h>
+
+#include "pcs.h"
+
+/**
+ * hICN plugin global state: see also
+ * - fib and pits
+ */
+typedef struct hicn_main_s
+{
+  /* Binary API message ID base */
+  u16 msg_id_base;
+
+  /* Have we been enabled */
+  u16 is_enabled;
+
+  /* Forwarder PIT/CS */
+  hicn_pit_cs_t pitcs;
+
+  /* Global PIT lifetime info */
+  /*
+   * Default PIT entry timeout to use in case an interest does not
+   * contain a valid interest lifetime
+   */
+  u64 pit_lifetime_dflt_ms;
+  /*
+   * Boundarier for the interest lifetime. If outside,
+   * pit_lifetime_dflt_ms is used in the PIT
+   */
+  u64 pit_lifetime_min_ms;
+  u64 pit_lifetime_max_ms;
+
+} hicn_main_t;
+
+extern hicn_main_t hicn_main;
+
+extern int hicn_infra_fwdr_initialized;
+
+/* PIT and CS size */
+u32 hicn_infra_pit_size;
+u32 hicn_infra_cs_size;
+
+/**
+ * @brief Enable and disable the hicn plugin
+ *
+ * Enable the time the hICN plugin and set the forwarder parameters.
+ * @param enable_disable 1 if to enable, 0 otherwisw (currently only enable is supported)
+ * @param pit_max_size Max size of the PIT
+ * @param pit_dflt_lifetime_sec_req Default PIT entry timeout to use in case an interest does not contain a valid interest lifetime
+ * @param pit_min_lifetime_sec_req Minimum timeout allowed for a PIT entry lifetime
+ * @param pit_max_lifetime_sec_req Maximum timeout allowed for a PIT entry lifetime
+ * @param cs_max_size CS size. Must be <= than pit_max_size
+ * @param cs_reserved_app Amount of CS reserved for application faces
+ */
+int
+hicn_infra_plugin_enable_disable (int enable_disable,
+				  int pit_max_size,
+				  f64 pit_dflt_lifetime_sec_req,
+				  f64 pit_min_lifetime_sec_req,
+				  f64 pit_max_lifetime_sec_req,
+				  int cs_max_size, int cs_reserved_app);
+
+
+/* vlib nodes that compose the hICN forwarder */
+extern vlib_node_registration_t hicn_interest_pcslookup_node;
+extern vlib_node_registration_t hicn_data_pcslookup_node;
+extern vlib_node_registration_t hicn_data_fwd_node;
+extern vlib_node_registration_t hicn_data_store_node;
+extern vlib_node_registration_t hicn_interest_hitpit_node;
+extern vlib_node_registration_t hicn_interest_hitcs_node;
+extern vlib_node_registration_t hicn_pg_interest_node;
+extern vlib_node_registration_t hicn_pg_data_node;
+extern vlib_node_registration_t hicn_pg_server_node;
+
+
+#endif /* // __HICN_INFRA_H__ */
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables: eval: (c-set-style "gnu") End:
+ */