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counterpereth.hh
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Tue, Jul 29, 10:31

counterpereth.hh
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#ifndef CLICK_COUNTERPERETH_HH
#define CLICK_COUNTERPERETH_HH
#include <click/element.hh>
#include <click/ewma.hh>
#include <click/atomic.hh>
#include <click/timer.hh>
#include "util.hh"
CLICK_DECLS
/*
* =c
* CounterPerEth([IGNORE])
* =s counters
* measures historical packet count and rate
* =d
*
* Passes packets unchanged from its input to its
* output, maintaining statistics information about
* packet count and packet rate using a strict average.
*
* The rate covers only the time between the first and
* most recent packets.
*
* IGNORE, by default, is 0. If it is greater than 0,
* the first IGNORE number of seconds are ignored in
* the count.
*
* =h count read-only
* Returns the number of packets that have passed through since the last reset.
*
* =h byte_count read-only
* Returns the number of packets that have passed through since the last reset.
*
* =h rate read-only
* Returns packet arrival rate.
*
* =h byte_rate read-only
* Returns packet arrival rate in bytes per second. (Beware overflow!)
*
* =h reset write-only
* Resets the count and rate to zero.
*/
class CounterPerEth : public Element { public:
CounterPerEth() CLICK_COLD;
const char *class_name() const { return "CounterPerEth"; }
const char *port_count() const { return PORTS_1_1; }
int configure(Vector<String> &, ErrorHandler *) CLICK_COLD;
HashTable<EtherAddress,atomic_uint32_t> count() const { return _count; }
uint32_t count_global() const { return _count_global; }
uint32_t count(EtherAddress eth) const { return _count[eth]; }
uint32_t byte_count(EtherAddress eth) const { return _byte_count[eth]; }
uint32_t first(EtherAddress eth) const { return _first[eth]; }
uint32_t last(EtherAddress eth) const { return _last[eth]; }
uint32_t ignore() const { return _ignore; }
void reset();
int debug() const { if(_verb_debug) return 10;}
String print_counts(int);
String print_rates(int);
int initialize(ErrorHandler *) CLICK_COLD;
void add_handlers() CLICK_COLD;
Packet *simple_action(Packet *);
private:
HashTable<EtherAddress,atomic_uint32_t> _count;
HashTable<EtherAddress,atomic_uint32_t> _byte_count;
HashTable<EtherAddress,atomic_uint32_t> _first;
HashTable<EtherAddress,atomic_uint32_t> _last;
atomic_uint32_t _count_global;
uint32_t _ignore;
bool _verb_debug;
};
CLICK_ENDDECLS
#endif

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