winsng2.hh

定向扩散路由协议

//
// WINSng2.hh    : WINSng2 Radio Support Include File
// Authors       : Fabio Silva
//
// Copyright (C) 2000-2002 by the University of Southern California
// $Id: WINSng2.hh,v 1.9 2002/06/27 22:04:31 fabio Exp $
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License,
// version 2, as published by the Free Software Foundation.
//
// This program 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 General Public License for more details.
//
// You should have received a copy of the GNU General Public License along
// with this program; if not, write to the Free Software Foundation, Inc.,
// 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
//
//

#ifndef _WINSNG2_HH_
#define _WINSNG2_HH_

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif // HAVE_CONFIG_H

#include <unistd.h>
#include <sys/stat.h>
#include <fcntl.h>

#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <netdb.h> 

#include "main/iodev.hh"

#include "rf.h"

#define DIFFUSION_PACKET_TYPE  60
#define WINS_BROADCAST        255

// Cooked device files
#define WINS_RF_DEVICE_0 "/dev/rf/0/flink"
#define WINS_RF_DEVICE_1 "/dev/rf/1/flink"

class RFIdCacheEntry {
public:
  RFIdCacheEntry(int32_t diffusion_id, if_id_t radio_id, int radio_fd) :
    diffusion_id_(diffusion_id), radio_id_(radio_id), radio_fd_(radio_fd)
  {};
  int32_t diffusion_id_;
  if_id_t radio_id_;
  int radio_fd_;
};

typedef list<RFIdCacheEntry *> RFIdCache;

class WINSNG2 : public DiffusionIO {
public:
  WINSNG2();
  DiffPacket recvPacket(int fd);
  void sendPacket(DiffPacket pkt, int len, int dst);

protected:
  RFIdCache RfCache_;
  void addCache(int fd, int32_t diffusion_id, if_id_t radio_id);
  int findInCache(int32_t diffusion_id, if_id_t *radio_id);
  DiffPacket assemblePacket(if_id_t radio_id, int len, DiffPacket pkt);
};

#endif // !_WINSNG2_HH_