ackfilter.hh

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

#ifndef CLICK_ACKFILTER_HH
#define CLICK_ACKFILTER_HH
#include <click/element.hh>
CLICK_DECLS

// ***sort out manual page later!

/*
=c

AckFilter(ETHER [, DROP_OWN, DROP_OTHER, I<KEYWORDS>])

=s 


=d

output 0: packets without the ack header (and with ethernet header modified)
output 1: a packet with the original ethernet and ack header


Keyword arguments are:

=over 8

=item ETHTYPE

Ethernet encapsulation type

=item OFFSET

The ethernet header starts OFFSET bytes into the packet. Default OFFSET is 0.

=back

=a 

*/

class AckFilter : public Element { public:
  
  AckFilter();
  ~AckFilter();

  const char *class_name() const		{ return "AckFilter"; }
  const char *processing() const		{ return PUSH; }

  //void notify_noutputs(int);
  int configure(Vector<String> &, ErrorHandler *);

  void push(int, Packet *);
  
 private:

  uint16_t _et;
  uint16_t _et_nothing;
  int _offset;
  
};

CLICK_ENDDECLS
#endif