CSMACD.c

/************************************************************************************
* Copyright (C) 2023                                                               *
* 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 "CSMACD.h"
 
//Function prototype
int fn_NetSim_CSMACD_Configure_F(void** var);
int fn_NetSim_CSMACD_Init_F(struct stru_NetSim_Network *NETWORK_Formal,
    NetSim_EVENTDETAILS *pstruEventDetails_Formal,
    char *pszAppPath_Formal,
    char *pszWritePath_Formal,
    int nVersion_Type,
    void **fnPointer);
 
_declspec(dllexport) int fn_NetSim_CSMACD_Configure(void** var)
{
    return fn_NetSim_CSMACD_Configure_F(var);
}
 
_declspec (dllexport) int fn_NetSim_CSMACD_Init(struct stru_NetSim_Network *NETWORK_Formal,
    NetSim_EVENTDETAILS *pstruEventDetails_Formal,
    char *pszAppPath_Formal,
    char *pszWritePath_Formal,
    int nVersion_Type,
    void **fnPointer)
{
    char *fcollisioncount,*fcontentionwindow;
    fcollisioncount = calloc(1,strlen(pszIOPath)+50);
    fn_NetSim_Utilities_ConcatString(3,fcollisioncount,pszIOPath,"/collisioncount.txt");
    file_collision = fopen(fcollisioncount,"w");
 
    if(file_collision == NULL)
        fnSystemError(fcollisioncount);
    else
    {
        fprintf(file_collision,"Source_ID\tCollision_Count\tTime (Micro Sec)\n");
    }
 
 
    fcontentionwindow = calloc(1,strlen(pszIOPath)+50);
    fn_NetSim_Utilities_ConcatString(3,fcontentionwindow,pszIOPath,"/ContentionWindow.txt");
    file_contention = fopen(fcontentionwindow,"w");
 
    if(file_contention == NULL)
        fnSystemError(fcontentionwindow);
    else
    {
        fprintf(file_contention,"Source_ID\tContention_Window\tTime (Micro Sec)\n");
    }
 
    return fn_NetSim_CSMACD_Init_F(NETWORK_Formal,pstruEventDetails_Formal,pszAppPath_Formal,
        pszWritePath_Formal,nVersion_Type,fnPointer);
}
 
_declspec (dllexport) int fn_NetSim_CSMACD_Run()
{
    switch(pstruEventDetails->nEventType)
    {
    case MAC_OUT_EVENT:
        fn_NetSim_CSMACD_MacOut();
        break;
    case MAC_IN_EVENT:
        fn_NetSim_CSMACD_MacIn();
        break;
    case PHYSICAL_OUT_EVENT:
        fn_NetSim_CSMACD_PhyOut();
        break;
    case PHYSICAL_IN_EVENT:
        fn_NetSim_CSMACD_PhyIn();
        break;
    case TIMER_EVENT:
        {
            switch(pstruEventDetails->nSubEventType)
            {
            case WAIT_FOR_RANDOM_TIME:
            case PERSISTANCE_WAIT:
                fn_NetSim_CSMACS_PersistanceWait();
                break;
            default:
                fnNetSimError("Unknown subevent type %d in %s.",pstruEventDetails->nSubEventType,
                    __FUNCTION__);
                break;
            }
        }
        break;
    default:
        fnNetSimError("Unknown event type %d in %s.",pstruEventDetails->nEventType,
            __FUNCTION__);
        break;
    }
    return 0;
}
 
_declspec(dllexport) int fn_NetSim_CSMACD_Finish()
{
    fclose(file_collision);
    fclose(file_contention);
    return 0;
}
 
_declspec (dllexport) char* fn_NetSim_CSMACD_Trace(int nSubEvent)
{
    return GetStringCSMACD_Subevent(nSubEvent);
}
_declspec(dllexport) int fn_NetSim_CSMACD_FreePacket(NetSim_PACKET* pstruPacket)
{
    pstruPacket;
    return 0;
}
 
/**
This function is called by NetworkStack.dll, to copy the aloha protocol
details from source packet to destination.
*/
_declspec(dllexport) int fn_NetSim_CSMACD_CopyPacket(NetSim_PACKET* pstruDestPacket,NetSim_PACKET* pstruSrcPacket)
{
    pstruDestPacket;
    pstruSrcPacket;
    return 0;
}
 
/**
This function write the Metrics     
*/
_declspec(dllexport) int fn_NetSim_CSMACD_Metrics(PMETRICSWRITER metricsWriter)
{
    metricsWriter;
    return 0;
}
 
/**
This function will return the string to write packet trace heading.
*/
_declspec(dllexport) char* fn_NetSim_CSMACD_ConfigPacketTrace()
{
    return "";
}
 
/**
This function will return the string to write packet trace.                                                                                                 
*/
_declspec(dllexport) char* fn_NetSim_CSMACD_WritePacketTrace(NetSim_PACKET* pstruPacket, char** ppszTrace)
{
    pstruPacket;
    ppszTrace;
    return "";
}