mttable.cc

在NS-2环境中实现了移动Ad Hoc的两种广播算法:Flood和Bcast。里面本来有个test目录

/*******************************************************************
 Copyright (C) 2004 Thomas Kunz, CRC Canada, BCAST for IPv4.
 DISTRIBUTED WITH NO WARRANTY, EXPRESS OR IMPLIED.
 See the GNU Library General Public License (file COPYING in the
 MANET_multicast directory) for conditions of use and redistribution.
*********************************************************************/

#include "MANET_multicast/mttable.h"

/* =====================================================================
   The Multicast Routing Table
   ===================================================================== */

mt_entry::mt_entry()
{
	// For AODV
	mt_dst = 0;
	mt_flags = MTF_DOWN;
	mt_grp_leader_dst = NO_LEADER;
	mt_seqno = 0;
	mt_hops_grp_leader = INFINITY2;
	mt_expire = 0.0;
	
	mt_req_last_ttl = 0;
	mt_req_flags = 0;
	mt_req_timeout = 0;
	mt_req_cnt = 0;
	mt_req_timestamp = 0;

	mt_prune_time = 0;

	mt_rep_timestamp = 0;
	mt_rep_dst = -1;
	mt_rep_seqno = 0;
	mt_rep_hop_count = 0;
	mt_rep_hops_grp_leader = 0;
	mt_rep_upstream = -1;
	mt_rep_src = -1;

	// For ODMRP
	fg_flag = 0;
	src = 0;
	recv = 0;
	fg_expire = 0;
};


/* =====================================================================
   The Multicast Routing Table
   ===================================================================== */
mt_entry*
mttable::mt_lookup(nsaddr_t id)
{
	mt_entry *mt = mthead.lh_first;

	for(; mt; mt = mt->mt_link.le_next) {
		if(mt->mt_dst == id)
		break;
	}
	return mt;
}

void
mttable::mt_delete(nsaddr_t id)
{
	mt_entry *mt = mt_lookup(id);

	if(mt) {
		LIST_REMOVE(mt, mt_link);
		delete mt;
	}
}

mt_entry*
mttable::mt_add(nsaddr_t id)
{
	mt_entry *mt;

	assert(mt_lookup(id) == 0);

	mt = new mt_entry;
	assert(mt);

	mt->mt_dst = id;
	LIST_INSERT_HEAD(&mthead, mt, mt_link);

	return mt;
}