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ReceptionQueue.hpp

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/******************************************************************************
 * WiFiMac                                                                    *
 * This file is part of openWNS (open Wireless Network Simulator)
 * _____________________________________________________________________________
 *
 * Copyright (C) 2004-2007
 * Chair of Communication Networks (ComNets)
 * Kopernikusstr. 16, D-52074 Aachen, Germany
 * phone: ++49-241-80-27910,
 * fax: ++49-241-80-22242
 * email: info@openwns.org
 * www: http://www.openwns.org
 * _____________________________________________________________________________
 *
 * openWNS is free software; you can redistribute it and/or modify it under the
 * terms of the GNU Lesser General Public License version 2 as published by the
 * Free Software Foundation;
 *
 * openWNS is distributed in the hope that it will be useful, but WITHOUT ANY
 * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
 * A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for more
 * details.
 *
 * You should have received a copy of the GNU Lesser General Public License
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#ifndef WIFIMAC_DRAFTN_RECEPTIONQUEUE_HPP
#define WIFIMAC_DRAFTN_RECEPTIONQUEUE_HPP

#include <WIFIMAC/draftn/BlockACKCommand.hpp>

#include <WNS/ldk/Compound.hpp>
#include <WNS/service/dll/Address.hpp>

namespace wifimac {
    namespace draftn {


        class BlockACK;

        class ReceptionQueue
        {
            typedef std::pair<wns::ldk::CompoundPtr, unsigned int> CompoundPtrWithSize;

        public:
            ReceptionQueue(BlockACK* parent_,
                           BlockACKCommand::SequenceNumber firstSN_,
                           wns::service::dll::UnicastAddress adr_);
            ~ReceptionQueue();

            void
            processIncomingData(const wns::ldk::CompoundPtr& compound,
                                const unsigned int size);

            void
            processIncomingACKreq(const wns::ldk::CompoundPtr& compound);

            const wns::ldk::CompoundPtr hasACK() const;

            wns::ldk::CompoundPtr getACK();

            const size_t numPDUs() const
                { return rxStorage.size(); }
            const unsigned int storageSize() const;

        private:
            void purgeRxStorage();

            const BlockACK* parent;
            const wns::service::dll::UnicastAddress adr;
            BlockACKCommand::SequenceNumber waitingForSN;
            std::map<BlockACKCommand::SequenceNumber, CompoundPtrWithSize> rxStorage;
            std::set<BlockACKCommand::SequenceNumber> rxSNs;
            wns::ldk::CompoundPtr blockACK;
        };

} // draftn
} // wifimac

#endif // WIFIMAC_DRAFTN_RECEPTIONQUEUE_HPP

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