/* Resets the DIO timer in the DAG to its minimal interval. */
void
rpl_reset_dio_timer(rpl_dag_t *dag, uint8_t force)
{
/* only reset if not just reset or started */
if(force || dag->dio_intcurrent > dag->dio_intmin) {
dag->dio_counter = 0;
dag->dio_intcurrent = dag->dio_intmin;
new_dio_interval(dag);
}
#if RPL_CONF_STATS
rpl_stats.resets++;
#endif
}
/*---------------------------------------------------------------------------*/
static void
handle_dio_timer(struct net_buf *not_used, void *ptr)
{
rpl_instance_t *instance;
instance = (rpl_instance_t *)ptr;
PRINTF("RPL: DIO Timer triggered\n");
if(!dio_send_ok) {
if(uip_ds6_get_link_local(ADDR_PREFERRED) != NULL) {
dio_send_ok = 1;
} else {
PRINTF("RPL: Postponing DIO transmission since link local address is not ok\n");
ctimer_set(NULL, &instance->dio_timer, CLOCK_SECOND, &handle_dio_timer,
instance);
return;
}
}
if(instance->dio_send) {
/* send DIO if counter is less than desired redundancy */
if(instance->dio_redundancy != 0 && instance->dio_counter < instance->dio_redundancy) {
#if RPL_CONF_STATS
instance->dio_totsend++;
#endif /* RPL_CONF_STATS */
dio_output(instance, NULL);
} else {
PRINTF("RPL: Supressing DIO transmission (%d >= %d)\n",
instance->dio_counter, instance->dio_redundancy);
}
instance->dio_send = 0;
PRINTF("RPL: Scheduling DIO timer %lu ticks in future (sent)\n",
instance->dio_next_delay);
ctimer_set(NULL, &instance->dio_timer, instance->dio_next_delay,
handle_dio_timer, instance);
} else {
/* check if we need to double interval */
if(instance->dio_intcurrent < instance->dio_intmin + instance->dio_intdoubl) {
instance->dio_intcurrent++;
PRINTF("RPL: DIO Timer interval doubled %d\n", instance->dio_intcurrent);
}
new_dio_interval(instance);
}
#if DEBUG
rpl_print_neighbor_list();
#endif
}
/* Resets the DIO timer in the instance to its minimal interval. */
void
rpl_reset_dio_timer(rpl_instance_t *instance)
{
#if !RPL_LEAF_ONLY
/* Do not reset if we are already on the minimum interval,
unless forced to do so. */
if(instance->dio_intcurrent > instance->dio_intmin) {
instance->dio_counter = 0;
instance->dio_intcurrent = instance->dio_intmin;
new_dio_interval(instance);
}
#if RPL_CONF_STATS
rpl_stats.resets++;
#endif /* RPL_CONF_STATS */
#endif /* RPL_LEAF_ONLY */
}
static void
handle_dio_timer(void *ptr)
{
rpl_dag_t *dag;
dag = (rpl_dag_t *)ptr;
PRINTF("RPL: DIO Timer triggered");
if(!dio_send_ok) {
if(uip_ds6_get_link_local(ADDR_PREFERRED) != NULL) {
dio_send_ok = 1;
} else {
PRINTF("RPL: Postponing DIO transmission since link local address is not ok");
ctimer_set(&dag->dio_timer, CLOCK_SECOND, &handle_dio_timer, dag);
return;
}
}
if(dag->dio_send) {
/* send DIO if counter is less than desired redundancy */
if(dag->dio_counter < dag->dio_redundancy) {
#if RPL_CONF_STATS
dag->dio_totsend++;
#endif /* RPL_CONF_STATS */
dio_output(dag, NULL);
} else {
PRINTF("RPL: Supressing DIO transmission (Xd >= Xd)");//, dag->dio_counter, dag->dio_redundancy);
}
dag->dio_send = 0;
PRINTF("RPL: Scheduling DIO timer Xu ticks in future (sent)");//, dag->dio_next_delay);
ctimer_set(&dag->dio_timer, dag->dio_next_delay, handle_dio_timer, dag);
} else {
/* check if we need to double interval */
if(dag->dio_intcurrent < dag->dio_intmin + dag->dio_intdoubl) {
dag->dio_intcurrent++;
PRINTF("RPL: DIO Timer interval doubled Xd");//, dag->dio_intcurrent);
}
new_dio_interval(dag);
}
}
