iptable.hh

// -*- c-basic-offset: 2; related-file-name: "../../lib/iptable.cc" -*-
#ifndef CLICK_IPTABLE_HH
#define CLICK_IPTABLE_HH
#include <click/glue.hh>
#include <click/vector.hh>
#include <click/ipaddress.hh>
CLICK_DECLS
 
// IP routing table.
// Lookup by longest prefix.
// Each entry contains a gateway and an output index.
 
class IPTable { public:
 
  IPTable();
  ~IPTable();
 
  bool lookup(IPAddress dst, IPAddress &gw, int &index) const;
 
  void add(IPAddress dst, IPAddress mask, IPAddress gw, int index);
  void del(IPAddress dst, IPAddress mask);
  void clear()                          { _v.clear(); }
  inline int size() { return _v.size(); }
 
 private:
 
  struct Entry {
    IPAddress dst;
    IPAddress mask;
    IPAddress gw;
    int index;
    bool valid() const                  { return mask || !dst; }
  };
  Vector<Entry> _v;
 
};
 
CLICK_ENDDECLS
#endif