OSPF_RoutingTable.h

#pragma once
/************************************************************************************
* 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                                                     *
*                                                                                  *
* ---------------------------------------------------------------------------------*/
 
#ifndef _NETSIM_OSPF_ROUTINGTABLE_H_
#define _NETSIM_OSPF_ROUTINGTABLE_H_
#ifdef  __cplusplus
extern "C" {
#endif
 
#define OSPF_LS_INFINITY 0xFFFFFF
 
#ifndef ptrIP_ROUTINGTABLE
#define ptrIP_ROUTINGTABLE void*
#endif
 
enum enum_ospf_dest_type
{
    OSPFDESTTYPE_ABR,
    OSPFDESTTYPE_ASBR,
    OSPFDESTTYPE_ABR_ASBR,
    OSPFDESTTYPE_NETWORK,
    OSPFDESTTYPE_ROUTER
};
 
typedef enum
{
    OSPFPATHTYPE_INTRA_AREA,
    OSPFPATHTYPE_INTER_AREA,
    OSPFPATHTYPE_TYPE1_EXTERNAL,
    OSPFPATHTYPE_TYPE2_EXTERNAL
} OSPFPATHTYPE;
 
typedef enum
{
    OSPFROUTEFLAG_INVALID,
    OSPFROUTEFLAG_CHANGED,
    OSPFROUTEFLAG_NO_CHANGE,
    OSPFROUTEFLAG_NEW
} OSPFROUTEFLAG;
 
// A row struct for routing table
typedef struct ospf_routingTableRow
{
    OSPFDESTTYPE destType;
    NETSIM_IPAddress destAddr;
    NETSIM_IPAddress addrMask;
    char option;
    OSPFID areaId;
    OSPFPATHTYPE pathType;
    UINT metric;
    UINT type2Metric;
    void* LSOrigin;
    NETSIM_IPAddress nextHop;
    NETSIM_ID nextHopId;
    NETSIM_IPAddress outInterface;
    NETSIM_ID outInterfaceId;
    NETSIM_IPAddress advertisingRouter;
    OSPFROUTEFLAG flag;
}OSPFROUTINGTABLEROW,*ptrOSPFROUTINGTABLEROW;
 
struct ospf_routingTables
{
    UINT numRow;
    ptrOSPFROUTINGTABLEROW* rows;
};
 
typedef enum
{
    OSPFVERTEXTYPE_ROUTER,
    OSPFVERTEXTYPE_NETWORK
} OSPFVERTEXTYPE;
static char strOSPFVERTEXTYPE[][20] = { "VERTEX_ROUTER","VERTEX_NETWORK" };
 
typedef struct
{
    NETSIM_ID outIntf;
    NETSIM_IPAddress nextHop;
} OSPFNEXTHOPLISTITEM, *ptrOSPFNEXTHOPLISTITEM;
 
typedef struct
{
    NETSIM_IPAddress vertexId;
    OSPFVERTEXTYPE vertexType;
    ptrOSPFLSAHDR lsa;
    ptrOSPFLIST nextHopList;
    UINT distance;
} OSPFVERTEX,*ptrOSPFVERTEX;
 
//OSPF Routing table
void ospf_rtTable_addRoute(ptrOSPF_PDS ospf,
                           ptrOSPFROUTINGTABLEROW newRoute);
void ospf_rtTable_freeRoute(ptrOSPF_PDS ospf,
                            ptrOSPFROUTINGTABLEROW row);
void ospf_rtTable_freeAllInvalidRoute(ptrOSPF_PDS ospf);
ptrOSPFROUTINGTABLEROW ospf_rtTable_getValidHostRoute(ptrOSPF_PDS ospf,
                                                      NETSIM_IPAddress destAddr,
                                                      OSPFDESTTYPE destType);
ptrOSPFROUTINGTABLEROW ospf_rtTable_getValidRoute(ptrOSPF_PDS ospf,
                                                  NETSIM_IPAddress destAddr,
                                                  OSPFDESTTYPE destType);
void ospf_rtTable_updateIPTable(ptrOSPF_PDS ospf);
void ospf_Table_updateIPTable_Dijkstra(ptrOSPF_PDS ospf, ptrOSPF_COST_LIST list);
 
#ifdef  __cplusplus
}
#endif
#endif //_NETSIM_OSPF_ROUTINGTABLE_H_