uwmulti-stack-controller.h

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//
// Copyright (c) 2014 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
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#ifndef UWMULTI_STACK_CONTROLLER_H
#define UWMULTI_STACK_CONTROLLER_H
 
#include <rng.h>
#include <packet.h>
#include <module.h>
#include <tclcl.h>
#include <map>
 
#include <iostream>
#include <string.h>
#include <cmath>
#include <climits>
#include "controller-clmsg.h"
 
typedef std::map <int, double> ThresMap; 
typedef std::map <int, ThresMap> ThresMatrix; 
class UwMultiStackController : public Module {
 
 
public:
 
  // constant definitions
  static int const layer_not_exist; 
  UwMultiStackController();
 
  virtual ~UwMultiStackController() { }
 
  virtual int command(int, const char*const*);
 
  virtual void addLayer(int id, int order);
 
  virtual void addThreshold(int i, int j, double thres_ij);
 
  virtual void recv(Packet *p);
  
  int inline getOrder(int layer_id) { return id2order.find(layer_id)==id2order.end() ? 
                                              UwMultiStackController::layer_not_exist :
                                              id2order.find(layer_id)->second; }
  
  int inline getId(int layer_order) { return order2id.find(layer_order)==order2id.end() ? 
                                              UwMultiStackController::layer_not_exist :
                                              order2id.find(layer_order)->second; }
protected:
  // Variables
  enum Mode
  {
    UW_MANUAL_SWITCH = 0, 
    UW_AUTOMATIC_SWITCH 
  };
 
  int debug_; 
  double min_delay_; 
  Mode switch_mode_; 
  int lower_id_active_; 
  std::map<int, int> id2order; 
  ThresMatrix threshold_map; 
  std::map<int, int> order2id; 
  int signaling_pktSize_; 
  virtual void recvFromUpperLayers(Packet *p);
 
  virtual inline int  getBestLayer(Packet *p) { assert(switch_mode_ == UW_AUTOMATIC_SWITCH); 
                                                return  lower_id_active_; }
 
  virtual bool isLayerAvailable(int id); 
 
  virtual double getMetricFromSelectedLowerLayer(int id, Packet* p);
  
  virtual bool getThreshold(int i, int j, double& thres_ij);
  
  virtual void eraseThreshold(int i, int j);
  
  void inline setThreshold(int i, int j, double thres_ij) { threshold_map[i][j] = thres_ij; }
 
private:
  //Variables
};
 
#endif /* UWMULTI_STACK_CONTROLLER_H  */