void sec_prot_timer_timeout_handle(sec_prot_t *prot, sec_prot_common_t *data, const trickle_params_t *trickle_params, uint16_t ticks)
{
if (data->trickle_running) {
bool running = trickle_running(&data->trickle_timer, trickle_params);
// Checks for trickle timer expiration */
if (trickle_timer(&data->trickle_timer, trickle_params, ticks)) {
sec_prot_result_set(data, SEC_RESULT_TIMEOUT);
prot->state_machine(prot);
}
// Checks if maximum number of trickle timer expirations has happened
if (running && !trickle_running(&data->trickle_timer, trickle_params)) {
sec_prot_result_set(data, SEC_RESULT_TIMEOUT);
sec_prot_state_set(prot, data, SEC_STATE_FINISH);
}
}
if (data->ticks > ticks) {
data->ticks -= ticks;
} else {
tr_debug("prot timeout");
data->ticks = 0;
sec_prot_result_set(data, SEC_RESULT_TIMEOUT);
sec_prot_state_set(prot, data, SEC_STATE_FINISH);
}
}
/* Returns true if you should transmit now */
bool trickle_timer(trickle_t *t, const trickle_params_t *params, uint16_t ticks)
{
if (!trickle_running(t, params)) {
return false;
}
bool transmit = false;
trickle_time_t new_time = t->now + ticks;
/* Catch overflow */
if (new_time < t->now) {
new_time = TRICKLE_TIME_MAX;
}
/* RFC 6206 Rule 4 */
if (t->now < t->t && new_time >= t->t) {
/* Treat k == 0 as "infinity", as per RFC 6206 6.5 */
if (t->c < params->k || params->k == 0) {
transmit = true;
}
}
/* RFC 6206 Rule 5 */
t->now = new_time;
if (new_time >= t->I) {
if (t->I <= TRICKLE_TIME_MAX / 2) {
t->I *= 2;
} else {
t->I = TRICKLE_TIME_MAX;
}
if (t->I > params->Imax) {
t->I = params->Imax;
}
if (t->e < UINT8_MAX) {
t->e++;
}
trickle_begin_interval(t);
}
return transmit;
}
/* RFC 6206 Rule 6 */
void trickle_inconsistent_heard(trickle_t *t, const trickle_params_t *params)
{
if (t->I != params->Imin || !trickle_running(t, params)) {
trickle_reset_timer(t, params);
}
}
