InfrastructureBSS.c

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/************************************************************************************
 * Copyright (C) 2020                                                               *
 * TETCOS, Bangalore. India                                                         *
 *                                                                                  *
 * Tetcos owns the intellectual property rights in the Product and its content.     *
 * The copying, redistribution, reselling or publication of any or all of the       *
 * Product or its content without express prior written consent of Tetcos is        *
 * prohibited. Ownership and / or any other right relating to the software and all  *
 * intellectual property rights therein shall remain at all times with Tetcos.      *
 *                                                                                  *
 * Author:    Shashi Kant Suman                                                     *
 *                                                                                  *
 * ---------------------------------------------------------------------------------*/
#include "main.h"
#include "IEEE802_11.h"
#include "IEEE802_11_Phy.h"
 
int fn_NetSim_802_11_InfrastructureBSS_Init(NETSIM_ID nApID,NETSIM_ID nApInterfaceID)
{
    int nConnectedDeviceCount;
    int nLoop;
    NETSIM_ID nDevId, nIntefId, nProtocolId;
    NETSIM_ID nLinkType;
    PIEEE802_11_MAC_VAR pstruApMac; 
    PIEEE802_11_PHY_VAR pstruApPhy;
    PIEEE802_11_MAC_VAR pstruNodeMac; 
    PIEEE802_11_PHY_VAR pstruNodePhy;
 
    NetSim_LINKS* pstruLink;
    pstruApMac = IEEE802_11_MAC(nApID,nApInterfaceID);
    pstruApPhy = IEEE802_11_PHY(nApID,nApInterfaceID);
    nLinkType = DEVICE_PHYLAYER(nApID,nApInterfaceID)->pstruNetSimLinks->nLinkType;
    pstruLink = DEVICE_PHYLAYER(nApID,nApInterfaceID)->pstruNetSimLinks;
 
    if(pstruLink->nLinkType != LinkType_P2MP)
    {
        fnNetSimError("AP %d interface %d is not connected with point-to-multipoint link",
            fn_NetSim_Stack_GetConfigIdOfDeviceById(nApID),
            DEVICE_INTERFACE_CONFIGID(nApID,nApInterfaceID));
        return -1;
    }
    nConnectedDeviceCount = pstruLink->puniDevList.pstrup2MP.nConnectedDeviceCount;
 
    //AP init
    pstruApMac->BSSType=INFRASTRUCTURE;
    pstruApMac->BSSId= DEVICE_HWADDRESS(nApID,nApInterfaceID);
    pstruApMac->nBSSId = nApID;
    pstruApMac->nAPInterfaceId= nApInterfaceID;
    pstruApMac->devCountinBSS = nConnectedDeviceCount+1;
    pstruApMac->devIdsinBSS=(NETSIM_ID*)calloc(nConnectedDeviceCount+1,sizeof* pstruApMac->devIdsinBSS);
    pstruApMac->devIfinBSS=(NETSIM_ID*)calloc(nConnectedDeviceCount+1,sizeof* pstruApMac->devIfinBSS);
    pstruApMac->devIdsinBSS[0]=nApID;
    pstruApMac->devIfinBSS[0]=nApInterfaceID;
    memcpy(pstruApMac->devIdsinBSS+1,pstruLink->puniDevList.pstrup2MP.anDevIds,
        nConnectedDeviceCount*sizeof(NETSIM_ID));
    memcpy(pstruApMac->devIfinBSS+1,pstruLink->puniDevList.pstrup2MP.anDevInterfaceIds,
        nConnectedDeviceCount*sizeof(NETSIM_ID));
 
    for(nLoop = 0; nLoop < nConnectedDeviceCount-1; nLoop++)
    {
        nDevId = pstruLink->puniDevList.pstrup2MP.anDevIds[nLoop];
        nIntefId = pstruLink->puniDevList.pstrup2MP.anDevInterfaceIds[nLoop];
 
        pstruNodeMac = IEEE802_11_MAC(nDevId,nIntefId);
        pstruNodePhy = IEEE802_11_PHY(nDevId,nIntefId);
        nProtocolId = DEVICE_MACLAYER(nDevId,nIntefId)->nMacProtocolId;
 
        pstruNodeMac->devIdsinBSS=(NETSIM_ID*)calloc(nConnectedDeviceCount+1,sizeof* pstruNodeMac->devIdsinBSS);
        pstruNodeMac->devIfinBSS=(NETSIM_ID*)calloc(nConnectedDeviceCount+1,sizeof* pstruNodeMac->devIfinBSS);
        pstruNodeMac->devIdsinBSS[0]=nApID;
        pstruNodeMac->devIfinBSS[0]=nApInterfaceID;
        memcpy(pstruNodeMac->devIdsinBSS+1,pstruLink->puniDevList.pstrup2MP.anDevIds,
            nConnectedDeviceCount*sizeof(NETSIM_ID));
        memcpy(pstruNodeMac->devIfinBSS+1,pstruLink->puniDevList.pstrup2MP.anDevInterfaceIds,
            nConnectedDeviceCount*sizeof(NETSIM_ID));
 
        // calculate the distance between AP and the node           
        pstruNodeMac->dDistFromAp = fn_NetSim_Utilities_CalculateDistance(DEVICE_POSITION(nDevId),DEVICE_POSITION(nApID));
 
        // Assign the link details to Phy variables of device
        pstruNodePhy->dFrequency= pstruApPhy->dFrequency;
        
        // Assign the AP details/ center device details to WLAN nodes
        pstruNodeMac->BSSType=INFRASTRUCTURE;
        pstruNodeMac->BSSId = DEVICE_HWADDRESS(nApID,nApInterfaceID);
        pstruNodeMac->nBSSId = nApID;
        pstruNodeMac->nAPInterfaceId= nApInterfaceID;
    }// End of for loop
    return 0;
}
 
void fn_NetSim_802_11_InfrastructureBSS_UpdateReceiver(NetSim_PACKET* packet)
{
    PIEEE802_11_MAC_VAR mac=IEEE802_11_CURR_MAC;
 
    if(MAC_COMPARE(DEVICE_HWADDRESS(pstruEventDetails->nDeviceId,pstruEventDetails->nInterfaceId),mac->BSSId))
    {   
        packet->nReceiverId = mac->nBSSId;
        packet->nTransmitterId = pstruEventDetails->nDeviceId;
    }
    else
    {
        if (isMulticastPacket(packet) || isBroadcastPacket(packet))
            packet->nReceiverId = 0;
        else
            packet->nReceiverId = get_first_dest_from_packet(packet);
        packet->nTransmitterId = pstruEventDetails->nDeviceId;
    }
}
 
bool isPacketforsameInfrastructureBSS(PIEEE802_11_MAC_VAR mac,NetSim_PACKET* packet)
{
    UINT i;
    if(!MAC_COMPARE(DEVICE_HWADDRESS(pstruEventDetails->nDeviceId,pstruEventDetails->nInterfaceId),mac->BSSId))
    {
        for (i = 0; i < mac->devCountinBSS; i++)
        {
            if (isDestFoundinPacket(packet, mac->devIdsinBSS[i]))
                return true;
        }
        return false;
    }
    return true;
}