marptable.h

/*
 * Copyright (c) 2008, Karlstad University
 * Erik Andersson, Emil Ljungdahl, Lars-Olof Moilanen
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *     * Redistributions of source code must retain the above copyright
 *       notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above copyright
 *       notice, this list of conditions and the following disclaimer in the
 *       documentation and/or other materials provided with the distribution.
 *     * Neither the name of the <organization> nor the
 *       names of its contributors may be used to endorse or promote products
 *       derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY COPYRIGHT HOLDERS ``AS IS'' AND ANY
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL <copyright holder> BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * $Id: marptable.h 92 2008-03-25 19:35:54Z emil $
 */

#ifndef ARPTABLE_H
#define ARPTABLE_H

#include <packet.h>
#include <map>

#ifndef EADDRNOTAVAIL
#define EADDRNOTAVAIL 125
#endif /* !EADDRNOTAVAIL */

#ifndef DROP_IFQ_ARP_FULL
#define DROP_IFQ_ARP_FULL               "ARP"
#endif

#define ARP_MAX_REQUEST_COUNT   3

class MARPEntry {
        public:
                MARPEntry(nsaddr_t dst) : up_(0), macaddr_(0), ipaddr_(dst), hold_(0), count_(0) { }

                int             up_;
                nsaddr_t        ipaddr_;
                int             macaddr_;
                Packet          *hold_;
                int             count_;
};

class MARPTable {
        public:
                MARPTable();
                ~MARPTable();

                void addEntry(MARPEntry *entry);

                MARPEntry *lookup(nsaddr_t addr);

                void clear();

        private:
                map<nsaddr_t, MARPEntry*> table_;
};

#endif /* ARPTABLE_H */

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