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diff --git a/src/mem/ruby/network/garnet-flexible-pipeline/NetworkLink.hh b/src/mem/ruby/network/garnet-flexible-pipeline/NetworkLink.hh
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+/*
+ * Copyright (c) 1999-2008 Mark D. Hill and David A. Wood
+ * 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 copyright holders 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 BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE 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.
+ */
+
+/*
+ * NetworkLink.h
+ *
+ * Niket Agarwal, Princeton University
+ *
+ * */
+#ifndef NETWORK_LINK_H
+#define NETWORK_LINK_H
+
+#include "NetworkHeader.hh"
+#include "FlexibleConsumer.hh"
+#include "flitBuffer.hh"
+#include "PrioHeap.hh"
+#include "NetDest.hh"
+
+class GarnetNetwork;
+
+class NetworkLink : public FlexibleConsumer {
+public:
+        NetworkLink();
+        NetworkLink(int id, int latency, GarnetNetwork *net_ptr);
+        ~NetworkLink();
+
+        void setLinkConsumer(FlexibleConsumer *consumer);
+        void setSourceQueue(flitBuffer *srcQueue);
+        flit* peekLink();
+        flit* consumeLink();
+
+        void print(ostream& out) const {}
+
+        bool is_vc_ready(flit *t_flit);
+
+        int get_id();
+        void setInPort(int port);
+        void setOutPort(int port);
+        void wakeup();
+        bool isReady();
+        void grant_vc_link(int vc, Time grant_time);
+        void release_vc_link(int vc, Time release_time);
+        void request_vc_link(int vc, NetDest destination, Time request_time);
+        bool isBufferNotFull_link(int vc);
+        void setSource(FlexibleConsumer *source);
+        double getLinkUtilization();
+        Vector<int> getVcLoad();
+
+protected:
+        int m_id, m_latency;
+        int m_in_port, m_out_port;
+        int m_link_utilized;
+        Vector<int > m_vc_load;
+        GarnetNetwork *m_net_ptr;
+
+        flitBuffer *linkBuffer;
+        FlexibleConsumer *link_consumer;
+        FlexibleConsumer *link_source;
+        flitBuffer *link_srcQueue;
+};
+
+#endif
+