static void hostapd_event_get_survey(struct hostapd_data *hapd,
struct survey_results *survey_results)
{
struct hostapd_iface *iface = hapd->iface;
struct freq_survey *survey, *tmp;
struct hostapd_channel_data *chan;
if (dl_list_empty(&survey_results->survey_list)) {
wpa_printf(MSG_DEBUG, "No survey data received");
return;
}
dl_list_for_each_safe(survey, tmp, &survey_results->survey_list,
struct freq_survey, list) {
chan = hostapd_get_mode_channel(iface, survey->freq);
if (!chan)
continue;
if (chan->flag & HOSTAPD_CHAN_DISABLED)
continue;
dl_list_del(&survey->list);
dl_list_add_tail(&chan->survey_list, &survey->list);
hostapd_update_nf(iface, chan, survey);
iface->chans_surveyed++;
}
}
static void hostapd_single_channel_get_survey(struct hostapd_iface *iface,
struct survey_results *survey_res)
{
struct hostapd_channel_data *chan;
struct freq_survey *survey;
u64 divisor, dividend;
survey = dl_list_first(&survey_res->survey_list, struct freq_survey,
list);
if (!survey || !survey->freq)
return;
chan = hostapd_get_mode_channel(iface, survey->freq);
if (!chan || chan->flag & HOSTAPD_CHAN_DISABLED)
return;
wpa_printf(MSG_DEBUG,
"Single Channel Survey: (freq=%d channel_time=%ld channel_time_busy=%ld)",
survey->freq,
(unsigned long int) survey->channel_time,
(unsigned long int) survey->channel_time_busy);
if (survey->channel_time > iface->last_channel_time &&
survey->channel_time > survey->channel_time_busy) {
dividend = survey->channel_time_busy -
iface->last_channel_time_busy;
divisor = survey->channel_time - iface->last_channel_time;
iface->channel_utilization = dividend * 255 / divisor;
wpa_printf(MSG_DEBUG, "Channel Utilization: %d",
iface->channel_utilization);
}
iface->last_channel_time = survey->channel_time;
iface->last_channel_time_busy = survey->channel_time_busy;
}
