78 lines
1.7 KiB
C++
78 lines
1.7 KiB
C++
/*
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* \brief DHCP client state model
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* \author Martin Stein
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* \date 2016-08-24
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*/
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/*
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* Copyright (C) 2016-2017 Genode Labs GmbH
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*
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* This file is part of the Genode OS framework, which is distributed
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* under the terms of the GNU Affero General Public License version 3.
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*/
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#ifndef _DHCP_CLIENT_H_
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#define _DHCP_CLIENT_H_
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/* Genode includes */
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#include <timer_session/connection.h>
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#include <base/allocator.h>
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#include <net/dhcp.h>
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namespace Net {
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class Domain;
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class Configuration;
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class Interface;
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class Ethernet_frame;
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class Dhcp_client;
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}
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class Net::Dhcp_client
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{
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private:
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enum class State
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{
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INIT = 0, SELECT = 1, REQUEST = 2, BOUND = 3, RENEW = 4, REBIND = 5
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};
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Genode::Allocator &_alloc;
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Interface &_interface;
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State _state { State::INIT };
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Timer::One_shot_timeout<Dhcp_client> _timeout;
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Genode::uint64_t _lease_time_sec = 0;
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void _handle_dhcp_reply(Dhcp_packet &dhcp);
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void _handle_timeout(Genode::Duration);
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void _rerequest(State next_state);
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Genode::Microseconds _rerequest_timeout(unsigned lease_time_div_log2);
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void _set_state(State state, Genode::Microseconds timeout);
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void _send(Dhcp_packet::Message_type msg_type,
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Ipv4_address client_ip,
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Ipv4_address server_ip,
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Ipv4_address requested_ip);
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Configuration &_config();
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Domain &_domain();
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public:
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Dhcp_client(Genode::Allocator &alloc,
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Timer::Connection &timer,
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Interface &interface);
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void handle_ip(Ethernet_frame ð,
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Size_guard &size_guard);
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void discover();
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};
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#endif /* _DHCP_CLIENT_H_ */
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