/**
* Function executed by NHDP thread receiving messages in an endless loop
*/
static void *_nhdp_runner(void *arg)
{
nhdp_if_entry_t *if_entry;
msg_t msg_rcvd, msg_queue[NHDP_MSG_QUEUE_SIZE];
(void)arg;
msg_init_queue(msg_queue, NHDP_MSG_QUEUE_SIZE);
while (1) {
msg_receive(&msg_rcvd);
switch (msg_rcvd.type) {
case HELLO_TIMER:
mutex_lock(&send_rcv_mutex);
if_entry = msg_rcvd.content.ptr;
nhdp_writer_send_hello(if_entry);
/* TODO: Add jitter */
/* Schedule next sending */
xtimer_set_msg64(&if_entry->if_timer,
timex_uint64(if_entry->hello_interval),
&msg_rcvd, thread_getpid());
mutex_unlock(&send_rcv_mutex);
break;
#if (NHDP_METRIC_NEEDS_TIMER)
case NHDP_METRIC_TIMER:
mutex_lock(&send_rcv_mutex);
/* Process necessary metric computations */
iib_process_metric_refresh();
/* Schedule next sending */
metric_msg.type = NHDP_METRIC_TIMER;
metric_msg.content.ptr = NULL;
xtimer_set_msg64(&metric_timer, timex_uint64(metric_interval),
metric_msg, thread_getpid());
mutex_unlock(&send_rcv_mutex);
break;
#endif
default:
break;
}
}
return 0;
}
void gnrc_rpl_long_delay_dao(gnrc_rpl_dodag_t *dodag)
{
dodag->dao_time = GNRC_RPL_REGULAR_DAO_INTERVAL * SEC_IN_USEC;
dodag->dao_counter = 0;
dodag->dao_ack_received = false;
xtimer_set_msg64(&dodag->dao_timer, dodag->dao_time, &dodag->dao_msg, gnrc_rpl_pid);
}
void gnrc_rpl_delay_dao(gnrc_rpl_dodag_t *dodag)
{
dodag->dao_time = GNRC_RPL_DEFAULT_DAO_DELAY * SEC_IN_USEC;
dodag->dao_counter = 0;
dodag->dao_ack_received = false;
xtimer_set_msg64(&dodag->dao_timer, dodag->dao_time, &dodag->dao_msg, gnrc_rpl_pid);
}
void _dao_handle_send(gnrc_rpl_dodag_t *dodag)
{
if ((dodag->dao_ack_received == false) && (dodag->dao_counter < GNRC_RPL_DAO_SEND_RETRIES)) {
dodag->dao_counter++;
gnrc_rpl_send_DAO(dodag, NULL, dodag->default_lifetime);
dodag->dao_time = GNRC_RPL_DEFAULT_WAIT_FOR_DAO_ACK * SEC_IN_USEC;
xtimer_set_msg64(&dodag->dao_timer, dodag->dao_time, &dodag->dao_msg, gnrc_rpl_pid);
}
else if (dodag->dao_ack_received == false) {
gnrc_rpl_long_delay_dao(dodag);
}
}
kernel_pid_t nhdp_start(void)
{
if (nhdp_pid == KERNEL_PID_UNDEF) {
/* Init destination address for NHDP's packets */
/* Start the NHDP thread */
nhdp_pid = thread_create(nhdp_stack, sizeof(nhdp_stack), THREAD_PRIORITY_MAIN - 1,
THREAD_CREATE_STACKTEST, _nhdp_runner, NULL, "NHDP");
#if (NHDP_METRIC_NEEDS_TIMER)
/* Configure periodic timer message to refresh metric values */
if (nhdp_pid != KERNEL_PID_UNDEF) {
metric_interval = timex_from_uint64(DAT_REFRESH_INTERVAL * SEC_IN_USEC);
metric_msg.type = NHDP_METRIC_TIMER;
metric_msg.content.ptr = NULL;
xtimer_set_msg64(&metric_timer, timex_uint64(metric_interval),
metric_msg, nhdp_pid);
}
#endif
}
return nhdp_pid;
}
