p802_15_4fail.cc

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/********************************************/
/*     NS2 Simulator for IEEE 802.15.4      */
/*           (per P802.15.4/D18)            */
/*------------------------------------------*/
/* by:        Jianliang Zheng               */
/*        (zheng@ee.ccny.cuny.edu)          */
/*              Myung J. Lee                */
/*          (lee@ccny.cuny.edu)             */
/*        ~~~~~~~~~~~~~~~~~~~~~~~~~         */
/*           SAIT-CUNY Joint Lab            */
/********************************************/

// File:  p802_15_4fail.cc
// Mode:  C++; c-basic-offset:8; tab-width:8; indent-tabs-mode:t

// $Header: /nfs/jade/vint/CVSROOT/ns-2/wpan/p802_15_4fail.cc,v 1.1 2005/01/24 18:34:24 haldar Exp $

/*
 * Copyright (c) 2003-2004 Samsung Advanced Institute of Technology and
 * The City University of New York. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. 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.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *  This product includes software developed by the Joint Lab of Samsung 
 *      Advanced Institute of Technology and The City University of New York.
 * 4. Neither the name of Samsung Advanced Institute of Technology nor of 
 *    The City University of New York may be used to endorse or promote 
 *    products derived from this software without specific prior written 
 *    permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE JOINT LAB OF SAMSUNG ADVANCED INSTITUTE
 * OF TECHNOLOGY AND THE CITY UNIVERSITY OF NEW YORK ``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 SAMSUNG ADVANCED INSTITUTE OR THE CITY UNIVERSITY OF NEW YORK 
 * 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.
 */


#include "p802_15_4fail.h"

LFAILLINK *lfailLink1 = NULL;
LFAILLINK *lfailLink2 = NULL;
NFAILLINK *nfailLink1 = NULL;
NFAILLINK *nfailLink2 = NULL;

int addLFailLink(int s,int d)
{
    LFAILLINK *tmp;
    if(lfailLink2 == NULL)      //not exist yet
    {
        lfailLink2 = new LFAILLINK(s,d);
        if (lfailLink2 == NULL) return 1;
        lfailLink1 = lfailLink2;
    }
    else
    {
        tmp=new LFAILLINK(s,d);
        if (tmp == NULL) return 1;
        tmp->last = lfailLink2;
        (lfailLink2)->next = tmp;
        lfailLink2 = tmp;
    }
    return 0;
}

int updateLFailLink(int oper,int s,int d)
{
    LFAILLINK *tmp;
    int rt;

    rt = 1;

    tmp = lfailLink1;
    while(tmp != NULL)
    {
        if ((tmp->src == s)&&(tmp->dst == d))
        {
            if (oper == fl_oper_del)    //delete an element
            {
                if(tmp->last != NULL)
                {
                    tmp->last->next = tmp->next;
                    if(tmp->next != NULL)
                        tmp->next->last = tmp->last;
                    else
                        lfailLink2 = tmp->last;
                }
                else if (tmp->next != NULL)
                {
                    lfailLink1 = tmp->next;
                    tmp->next->last = NULL;
                }
                else
                {
                    lfailLink1 = NULL;
                    lfailLink2 = NULL;
                }
                delete tmp;
            }
            rt = 0;
            break;
        }
        tmp = tmp->next;
    }
    return rt;
}

int chkAddLFailLink(int s,int d)
{
        int i;

        i = updateLFailLink(fl_oper_est,s,d);
        if (i == 0) return 1;
        i = addLFailLink(s,d);
        if (i == 0) return 0;
        else return 2;
}

int addNFailLink(int a)
{
    NFAILLINK *tmp;
    if(nfailLink2 == NULL)      //not exist yet
    {
        nfailLink2 = new NFAILLINK(a);
        if (nfailLink2 == NULL) return 1;
        nfailLink1 = nfailLink2;
    }
    else
    {
        tmp=new NFAILLINK(a);
        if (tmp == NULL) return 1;
        tmp->last = nfailLink2;
        (nfailLink2)->next = tmp;
        nfailLink2 = tmp;
    }
    return 0;
}

int updateNFailLink(int oper,int a)
{
    NFAILLINK *tmp;
    int rt;

    rt = 1;

    tmp = nfailLink1;
    while(tmp != NULL)
    {
        if (tmp->addr == a)
        {
            if (oper == fl_oper_del)    //delete an element
            {
                if(tmp->last != NULL)
                {
                    tmp->last->next = tmp->next;
                    if(tmp->next != NULL)
                        tmp->next->last = tmp->last;
                    else
                        nfailLink2 = tmp->last;
                }
                else if (tmp->next != NULL)
                {
                    nfailLink1 = tmp->next;
                    tmp->next->last = NULL;
                }
                else
                {
                    nfailLink1 = NULL;
                    nfailLink2 = NULL;
                }
                delete tmp;
            }
            rt = 0;
            break;
        }
        tmp = tmp->next;
    }
    return rt;
}

int chkAddNFailLink(int a)
{
        int i;

        i = updateNFailLink(fl_oper_est,a);
        if (i == 0) return 1;
        i = addNFailLink(a);
        if (i == 0) return 0;
        else return 2;
}

// End of file: p802_15_4fail.cc

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