74 lines
1.5 KiB
C++
74 lines
1.5 KiB
C++
/*
|
|
* \brief Signal driven network handler
|
|
* \author Stefan Kalkowski
|
|
* \auhtor Sebastian Sumpf
|
|
* \date 2013-09-24
|
|
*/
|
|
|
|
/*
|
|
* Copyright (C) 2010-2013 Genode Labs GmbH
|
|
*
|
|
* This file is part of the Genode OS framework, which is distributed
|
|
* under the terms of the GNU General Public License version 2.
|
|
*/
|
|
|
|
#ifndef _PACKET_HANDLER_H_
|
|
#define _PACKET_HANDLER_H_
|
|
|
|
/* Genode */
|
|
#include <nic_session/connection.h>
|
|
|
|
namespace Net {
|
|
class Packet_handler;
|
|
}
|
|
|
|
|
|
/**
|
|
* Generic packet handler used as base for NIC and client packet handlers.
|
|
*/
|
|
class Net::Packet_handler
|
|
{
|
|
private:
|
|
|
|
/**
|
|
* submit queue not empty anymore
|
|
*/
|
|
void _packet_avail(unsigned);
|
|
|
|
/**
|
|
* acknoledgement queue not full anymore
|
|
*/
|
|
void _ready_to_ack(unsigned);
|
|
|
|
/**
|
|
* acknoledgement queue not empty anymore
|
|
*/
|
|
void _ack_avail(unsigned);
|
|
|
|
/**
|
|
* submit queue not full anymore
|
|
*
|
|
* TODO: by now, we just drop packets that cannot be transferred
|
|
* to the other side, that's why we ignore this signal.
|
|
*/
|
|
void _ready_to_submit(unsigned) { }
|
|
|
|
protected:
|
|
|
|
Genode::Signal_dispatcher<Packet_handler> _sink_ack;
|
|
Genode::Signal_dispatcher<Packet_handler> _sink_submit;
|
|
Genode::Signal_dispatcher<Packet_handler> _source_ack;
|
|
Genode::Signal_dispatcher<Packet_handler> _source_submit;
|
|
|
|
public:
|
|
|
|
Packet_handler();
|
|
|
|
virtual Packet_stream_sink< ::Nic::Session::Policy> * sink() = 0;
|
|
virtual Packet_stream_source< ::Nic::Session::Policy> * source() = 0;
|
|
|
|
void packet_avail() { _packet_avail(1); }
|
|
};
|
|
|
|
#endif /* _PACKET_HANDLER_H_ */
|