144 lines
3.5 KiB
C++
144 lines
3.5 KiB
C++
/*
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* \brief Downlink interface in form of a NIC session component
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* \author Martin Stein
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* \date 2017-03-08
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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 _COMPONENT_H_
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#define _COMPONENT_H_
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/* Genode includes */
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#include <base/allocator_guard.h>
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#include <root/component.h>
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#include <nic/packet_allocator.h>
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#include <nic_session/rpc_object.h>
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/* local includes */
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#include <interface.h>
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namespace Net {
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class Communication_buffer;
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class Session_component_base;
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class Session_component;
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class Root;
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class Uplink;
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}
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class Net::Communication_buffer : public Genode::Ram_dataspace_capability
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{
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private:
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Genode::Ram_session &_ram;
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public:
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Communication_buffer(Genode::Ram_session &ram,
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Genode::size_t const size);
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~Communication_buffer() { _ram.free(*this); }
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};
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class Net::Session_component_base
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{
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protected:
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Genode::Allocator_guard _guarded_alloc;
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Nic::Packet_allocator _range_alloc;
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Communication_buffer _tx_buf;
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Communication_buffer _rx_buf;
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public:
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Session_component_base(Genode::Allocator &guarded_alloc_backing,
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Genode::size_t const guarded_alloc_amount,
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Genode::Ram_session &buf_ram,
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Genode::size_t const tx_buf_size,
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Genode::size_t const rx_buf_size);
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};
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class Net::Session_component : public Session_component_base,
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public ::Nic::Session_rpc_object,
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public Interface
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{
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private:
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Mac_address _mac;
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/********************
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** Net::Interface **
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********************/
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Packet_stream_sink &_sink() { return *_tx.sink(); }
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Packet_stream_source &_source() { return *_rx.source(); }
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public:
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Session_component(Genode::Allocator &alloc,
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Genode::size_t const amount,
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Genode::Ram_session &buf_ram,
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Genode::size_t const tx_buf_size,
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Genode::size_t const rx_buf_size,
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Genode::Region_map ®ion_map,
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Uplink &uplink,
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Genode::Xml_node config,
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Timer::Connection &timer,
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unsigned &curr_time,
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Genode::Entrypoint &ep);
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/******************
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** Nic::Session **
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******************/
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Mac_address mac_address() { return _mac; }
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bool link_state();
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void link_state_sigh(Genode::Signal_context_capability sigh);
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};
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class Net::Root : public Genode::Root_component<Session_component,
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Genode::Single_client>
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{
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private:
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Genode::Entrypoint &_ep;
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Uplink &_uplink;
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Genode::Ram_session &_buf_ram;
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Genode::Region_map &_region_map;
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Genode::Xml_node _config;
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Timer::Connection &_timer;
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unsigned &_curr_time;
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/********************
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** Root_component **
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********************/
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Session_component *_create_session(char const *args);
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public:
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Root(Genode::Entrypoint &ep,
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Genode::Allocator &alloc,
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Uplink &uplink,
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Genode::Ram_session &buf_ram,
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Genode::Xml_node config,
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Timer::Connection &timer,
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unsigned &curr_time,
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Genode::Region_map ®ion_map);
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};
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#endif /* _COMPONENT_H_ */
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