/*---------------------------------------------------------------------------*/
rpl_dag_t *
rpl_alloc_dag(uint8_t instance_id, uip_ipaddr_t *dag_id)
{
rpl_dag_t *dag, *end;
rpl_instance_t *instance;
instance = rpl_get_instance(instance_id);
if(instance == NULL) {
instance = rpl_alloc_instance(instance_id);
if(instance == NULL) {
RPL_STAT(rpl_stats.mem_overflows++);
return NULL;
}
}
for(dag = &instance->dag_table[0], end = dag + RPL_MAX_DAG_PER_INSTANCE; dag < end; ++dag) {
if(!dag->used) {
memset(dag, 0, sizeof(*dag));
dag->used = 1;
dag->rank = INFINITE_RANK;
dag->min_rank = INFINITE_RANK;
dag->instance = instance;
return dag;
}
}
RPL_STAT(rpl_stats.mem_overflows++);
rpl_free_instance(instance);
return NULL;
}
void
cetic_6lbr_end_dodag_root(rpl_instance_t *instance)
{
if(is_dodag_root()) {
LOG6LBR_INFO("Leaving DODAG root\n");
rpl_local_repair(instance);
dio_output(instance, NULL);
rpl_free_dag(instance->current_dag);
rpl_free_instance(instance);
if(!rpl_fast_startup) {
//Restart DODAG creation check
ctimer_set(&create_dodag_root_timer, CLOCK_SECOND, check_dodag_creation, NULL);
}
}
}