#ifndef CLICK_MARKIPCE_HH#define CLICK_MARKIPCE_HH#include <click/element.hh>#include <click/atomic.hh>CLICK_DECLS/*=cMarkIPCE()=s ipsets IP packets' ECN field to Congestion Experienced=dExpects IP packets as input. Sets each incoming packet's ECN field toCongestion Experienced (value 3), incrementally recalculates the IP checksum,and passes the packet to output 0. Non-IP packets, and IP packets whose ECNfield is zero (not ECN-capable), are dropped. */class MarkIPCE : public Element { public:  MarkIPCE();  ~MarkIPCE();  const char *class_name() const		{ return "MarkIPCE"; }  const char *port_count() const		{ return PORTS_1_1; }  const char *processing() const		{ return AGNOSTIC; }  int initialize(ErrorHandler *);  void add_handlers();  inline Packet *smaction(Packet *);  void push(int, Packet *p);  Packet *pull(int); private:  atomic_uint32_t _drops;  static String read_handler(Element *, void *);};CLICK_ENDDECLS#endif