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+/*
+ * Copyright (c) 2003 The Regents of The University of Michigan
+ * 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.
+ */
+
+/* @file
+ * Class representing the actual interface between two ethernet
+ * components.
+ */
+
+#ifndef __ETHERINT_HH__
+#define __ETHERINT_HH__
+
+#include <string>
+
+#include "etherpkt.hh"
+#include "sim_object.hh"
+
+/*
+ * Class representing the actual interface between two ethernet
+ * components.  These components are intended to attach to another
+ * ethernet interface on one side and whatever device on the other.
+ */
+class EtherInt : public SimObject
+{
+  protected:
+    EtherInt *peer;
+
+  public:
+    EtherInt(const std::string &name) : SimObject(name), peer(NULL) {}
+    virtual ~EtherInt() {}
+
+    void setPeer(EtherInt *p);
+    virtual bool recvPacket(PacketPtr packet) = 0;
+    void recvDone() { peer->sendDone(); }
+    bool sendPacket(PacketPtr packet) { return peer->recvPacket(packet); }
+    virtual void sendDone() = 0;
+};
+
+#endif // __ETHERINT_HH__