SequenceNumber.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 "RPL.h"
 
static seq_num_mapping_t ** seq_num_mapping_list = NULL;
static UINT16               seq_num_mapping_count = 0;
 
void seq_num_mapping_cleanup()
{
    UINT16 i;
    for (i = 0; i < seq_num_mapping_count; i++)
    {
        seq_num_mapping_t *mapping = seq_num_mapping_list[i];
 
        bool in_use = FALSE;
 
        UINT16 j;
        for (j = 0; j < NETWORK->nDeviceCount; j++)
        {
            PRPL_NODE rpl = GET_RPL_NODE(j + 1);
            if(!rpl)
                continue; // RPL is not configured for this device.
            if (!rpl_node_is_root(rpl))
            { /* only root nodes modify sequence numbers */
                continue;
            }
            if (!rpl->root_info->dodag_id)
                fnNetSimError("DODAG Id is NULL. This may occur because some RPL configuration is wrong. Don't know what?");
 
            if (IP_COMPARE(rpl->root_info->dodag_id, mapping->dodag_id) == 0)
            {
                in_use = TRUE;
                break;
            }
        }
 
        if (in_use)
        {
            continue;
        }
 
        for (j = i; j < seq_num_mapping_count - 1; j++)
        {
            seq_num_mapping_list[j] = seq_num_mapping_list[j + 1];
        }
 
        free(mapping);
 
        seq_num_mapping_count--;
    }
}
 
seq_num_mapping_t *seq_num_mapping_get(NETSIM_IPAddress dodag_id)
{
    UINT16 i;
    for (i = 0; i < seq_num_mapping_count; i++)
    {
        seq_num_mapping_t *mapping = seq_num_mapping_list[i];
 
        if (IP_COMPARE(mapping->dodag_id, dodag_id) == 0)
            return mapping;
    }
 
    seq_num_mapping_list = realloc(seq_num_mapping_list, (seq_num_mapping_count + 1) * sizeof(seq_num_mapping_t *));
 
    seq_num_mapping_list[seq_num_mapping_count] = malloc(sizeof(seq_num_mapping_t));
    seq_num_mapping_list[seq_num_mapping_count]->dodag_id = IP_COPY(dodag_id);
    seq_num_mapping_list[seq_num_mapping_count]->seq_num = 1;
 
    return seq_num_mapping_list[seq_num_mapping_count++];
}