+ struct state_t : enum_base<state_t>
+ {
+ const static state_t DISCOVER;
+ const static state_t REQUEST;
+ const static state_t BOUND;
+
+ static const state_t& from_vpp(int i);
+
+ private:
+ /**
+ * Private constructor taking the value and the string name
+ */
+ state_t(int v, const std::string& s);
+ };
+
+ /**
+ * A DHCP lease data
+ */
+ struct lease_t
+ {
+ lease_t();
+ lease_t(const state_t& state,
+ std::shared_ptr<interface> itf,
+ const boost::asio::ip::address& router_address,
+ const route::prefix_t& host_prefix,
+ const std::string& hostname,
+ const mac_address_t& mac);
+
+ std::string to_string() const;
+
+ const state_t& state;
+ std::shared_ptr<interface> itf;
+ boost::asio::ip::address router_address;
+ route::prefix_t host_prefix;
+ std::string hostname;
+ mac_address_t mac;
+ };
+
+ /**
+ * A class that listens to DHCP Events
+ */
+ class event_listener
+ {
+ public:
+ /**
+ * Constructor
+ */
+ event_listener();
+
+ /**
+ * listener's virtual function invoked when a DHCP event is
+ * available to read
+ */
+ virtual void handle_dhcp_event(std::shared_ptr<lease_t> e) = 0;
+
+ /**
+ * Return the HW::item associated with this command
+ */
+ HW::item<bool>& status();
+
+ protected:
+ /**
+ * The HW::item associated with this command
+ */
+ HW::item<bool> m_status;
+ };
+