75 lines
1.6 KiB
C++
75 lines
1.6 KiB
C++
/*
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* \brief Signal driven network handler
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* \author Stefan Kalkowski
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* \auhtor Sebastian Sumpf
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* \date 2013-09-24
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*/
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/*
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* Copyright (C) 2010-2013 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 General Public License version 2.
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*/
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#ifndef _PACKET_HANDLER_H_
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#define _PACKET_HANDLER_H_
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/* Genode */
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#include <nic_session/connection.h>
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namespace Net {
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class Packet_handler;
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using Nic::Packet_stream_sink;
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using Nic::Packet_stream_source;
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using Nic::Packet_descriptor;
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}
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/**
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* Generic packet handler used as base for NIC and client packet handlers.
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*/
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class Net::Packet_handler
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{
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protected:
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/**
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* submit queue not empty anymore
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*/
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void _packet_avail(unsigned);
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/**
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* acknoledgement queue not full anymore
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*/
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void _ready_to_ack(unsigned);
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/**
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* acknoledgement queue not empty anymore
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*/
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void _ack_avail(unsigned);
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/**
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* submit queue not full anymore
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*
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* TODO: by now, we just drop packets that cannot be transferred
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* to the other side, that's why we ignore this signal.
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*/
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void _ready_to_submit(unsigned) { }
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Genode::Signal_dispatcher<Packet_handler> _sink_ack;
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Genode::Signal_dispatcher<Packet_handler> _sink_submit;
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Genode::Signal_dispatcher<Packet_handler> _source_ack;
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Genode::Signal_dispatcher<Packet_handler> _source_submit;
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public:
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Packet_handler();
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virtual Packet_stream_sink< ::Nic::Session::Policy> * sink() = 0;
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virtual Packet_stream_source< ::Nic::Session::Policy> * source() = 0;
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};
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#endif /* _PACKET_HANDLER_H_ */
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