NetLinkManager.h

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/*
 * NetLinkManager.h
 *
 * Copyright (C) 2011 IBR, TU Braunschweig
 *
 * Written-by: Johannes Morgenroth <morgenroth@ibr.cs.tu-bs.de>
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 */

#ifndef NETLINKMANAGER_H_
#define NETLINKMANAGER_H_

#include "ibrcommon/link/LinkManager.h"
#include "ibrcommon/net/socket.h"
#include "ibrcommon/net/vsocket.h"
#include "ibrcommon/net/vinterface.h"
#include "ibrcommon/thread/Mutex.h"
#include "ibrcommon/thread/Conditional.h"
#include "ibrcommon/thread/Thread.h"

#include <netlink/netlink.h>
#include <netlink/cache.h>
#include <map>

namespace ibrcommon
{
        class NetLinkManager : public ibrcommon::LinkManager, public ibrcommon::JoinableThread
        {
                friend class LinkManager;

        public:
                virtual ~NetLinkManager();

                void up() throw ();
                void down() throw ();

                const vinterface getInterface(int index) const;
                const std::list<vaddress> getAddressList(const vinterface &iface, const std::string &scope = "");

                class parse_exception : public Exception
                {
                public:
                        parse_exception(string error) : Exception(error)
                        {};
                };

        protected:
                void run() throw ();
                void __cancellation() throw ();

        private:
                NetLinkManager();

                class netlinkcache : public basesocket
                {
                public:
                        netlinkcache(int protocol);
                        virtual ~netlinkcache();

                        virtual void up() throw (socket_exception);
                        virtual void down() throw (socket_exception);

                        virtual int fd() const throw (socket_exception);

                        void add(const std::string &cachename) throw (socket_exception);
                        struct nl_cache* get(const std::string &cachename) const throw (socket_exception);

                        void receive() throw (socket_exception);

                private:
                        const int _protocol;

                        void *_nl_handle;
                        struct nl_cache_mngr *_mngr;

                        std::map<std::string, struct nl_cache*> _caches;
                };

                ibrcommon::Mutex _cache_mutex;
                netlinkcache _route_cache;

                bool _running;

                ibrcommon::vsocket _sock;
        };
}

#endif /* NETLINKMANAGER_H_ */