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diff --git a/data-ipa-cfg-mgr/ipacm/inc/IPACM_IfaceManager.h b/data-ipa-cfg-mgr/ipacm/inc/IPACM_IfaceManager.h
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+/*
+Copyright (c) 2013, The Linux Foundation. All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+    * Redistributions of source code must retain the above copyright
+      notice, this list of conditions and the following disclaimer.
+    * Redistributions in binary form must reproduce the above
+      copyright notice, this list of conditions and the following
+      disclaimer in the documentation and/or other materials provided
+      with the distribution.
+    * Neither the name of The Linux Foundation nor the names of its
+      contributors may be used to endorse or promote products derived
+      from this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+/*!
+	@file
+	IPACM_IfaceManager.h
+
+	@brief
+	This file implements the IPAM iface_manager definitions
+
+	@Author
+	Skylar Chang
+
+*/
+#ifndef IPACM_IFACEMANAGER_H
+#define IPACM_IFACEMANAGER_H
+
+#include <stdio.h>
+#include <IPACM_CmdQueue.h>
+
+#include "IPACM_Routing.h"
+#include "IPACM_Filtering.h"
+#include "IPACM_Listener.h"
+#include "IPACM_Iface.h"
+
+#define IPA_MAX_NUM_NEIGHBOR_CLIENTS  17
+#define IPA_INSTANCE_NOT_FOUND  0
+#define IPA_INSTANCE_FOUND  1
+
+/* queue */
+typedef struct _iface_instances
+{
+    /* Linux interface id */
+	int ipa_if_index;
+	IPACM_Listener *obj;
+	_iface_instances *next;
+}  iface_instances;
+
+
+class IPACM_IfaceManager : public IPACM_Listener
+{
+
+public:
+
+  IPACM_IfaceManager();
+
+  void event_callback(ipa_cm_event_id event,
+                      void *data);
+
+  /* api for all iface instances to de-register instances */
+  static int deregistr(IPACM_Listener *param);
+
+
+private:
+	int create_iface_instance(ipacm_ifacemgr_data *);
+
+    /* api to register instances */
+	int registr(int ipa_if_index, IPACM_Listener *obj);
+
+	int SearchInstance(int ipa_if_index);
+
+	static iface_instances *head;
+
+};
+
+#endif /* IPACM_IFACEMANAGER_H */