decoder.hh

COPE the first practical network coding scheme which is developped on click

#ifndef DECODER_HH
#define DECODER_HH

CLICK_DECLS

/*
 * =c
 * Decoder ()
 * =s Wifi, Wireless Routing
 * decodes received packets
 * =d
 *
 * Input 0: packets for decoding 
 * Output 0: decoded packets for normal processing (push)
 */

#include<click/element.hh>
//#include<click/bighashmap.hh>
#include<click/timer.hh>
#include<click/packet.hh>
#include <click/ipaddress.hh>
//#include <click/string.hh>

#include "sendmanager.hh"
#include "scramblequeue.hh"
#include "recvmanager.hh"

class EtherAddress;

class Decoder : public Element, public Xorer { public:
  
  Decoder();		
  ~Decoder();		
  
  const char *class_name() const	{ return "Decoder"; }
  const char *processing() const	{ return PUSH;}

  void *cast(const char *);

  int configure(Vector<String> &conf, ErrorHandler *);

  void add_handlers();
  static String stats(Element *, void *);
  static int static_clear(const String &arg, Element *e,
                          void *, ErrorHandler *errh);

  void push(int, Packet *);

  // for statistics
  int _decodedpkts;                     // counts how many packets have been decoded
  // int _overheard;                // how many encoded packets overheard that's not for me
  int _undecodable;                 // packets that cannot be decoded due to missing matching packets
  int _duplicatepkts;                  // duplicate encoded packets received
  int _nnewpkts;                    // number of new packets
  
  int _decodedbytes;                // number of decoded bytes
  int _duplicatebytes;              // number of duplicate bytes
  int _nnewbytes;                   // number of new bytes

private:

  // ethernet address
  EtherAddress _myea;
  uint8_t _myalias;

  SendManager *_sendmgr;
  AliasTable *_aliases;
  RecvManager *_recvmgr;
  // ScrambleQueue *_scrambleq;
};

CLICK_ENDDECLS
#endif