module-middle.h

ns2中跨层对网路性能优化较复杂

//
// Copyright (c) 2006 Regents of the SIGNET lab, University of Padova.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions
// are met:
// 1. Redistributions of source code must retain the above copyright
//    notice, this list of conditions and the following disclaimer.
// 2. 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.
// 3. Neither the name of the University of Padova (SIGNET lab) 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.
//


#ifndef _MODULEMIDDLE_
#define _MODULEMIDDLE_

#include "module.h"


#define DELAYINTERVAL 1		// delay interval in which extract the random delay
#define DEFAULTINTERFACE 1	// deafult interface value


/*
	A basic module that has only to send received packets from the above layer to the bottom layer (all modules)
	after set the iface that has to be used (only for debugging purposes)
*/
class ModuleMiddle : public Module
{
	public:
		ModuleMiddle();
		~ModuleMiddle();
		
		// TCL command interpreter
		virtual int command(int argc, const char*const* argv);
		// cross-layer command interpreter
		virtual int crLayCommand(ClMessage* m);
		void recv(Packet* p);

	private:
		
		// current interface to be specuified in the common header of each packet sent
		int iface_;
		
};

#endif