fixedrtable.h

NS中如何添加MANUAL路由协议

/*
 * Copyright (c) 2004, Stony Brook University
 * Contributors: Ashish Raniwala
 * All rights reserved.
 *
 * See copyright notice included in the distribution for details
 *
 */

// raniwala: added for manual routing in wireless scenario
//
#ifndef fixed_r_table_h_
#define fixed_r_table_h_

#include "config.h"
#include "scheduler.h"
#include "queue.h"

#ifndef uint
typedef unsigned int uint;
#endif // !uint

/* NOTE: we depend on bzero setting the booleans to ``false''
   but if false != 0, so many things are screwed up, I don't
   know what to say... */

class fixed_rtable_ent {
public:
  fixed_rtable_ent() { bzero(this, sizeof(fixed_rtable_ent));}
  nsaddr_t     dst;     // destination
  int          tag;     // tag
  nsaddr_t     hop;     // next hop
  int	     nic_id;     // next hop
  PacketQueue *q;		//pkts queued for dst
};

// AddEntry adds an entry to the routing table with metric ent->metric+em.
//   You get to free the goods.
//
// GetEntry gets the entry for an address.

class FixedRoutingTable {
  public:
    FixedRoutingTable();
    void AddEntry(const fixed_rtable_ent &ent);
    fixed_rtable_ent *GetEntry(nsaddr_t dest, int tag);

    // for looping over elements
    int RemainingLoop();
    void InitLoop();
    fixed_rtable_ent *NextLoop();

  private:
    fixed_rtable_ent *rtab;
    int         maxelts;

    // for looping over elements
    int         elts;
    int         ctr;
};
    
#endif