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hostapd: implement fallback for incomplete survey data 

Signed-off-by: Felix Fietkau <nbd@nbd.name>
lede-17.01
Felix Fietkau 2016-06-15 17:31:48 +02:00
parent 13b44abcff
commit ef74d5cbf8
1 changed files with 45 additions and 0 deletions
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45
package/network/services/hostapd/patches/470-survey_data_fallback.patch Normal file
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@ -0,0 +1,45 @@
--- a/src/ap/acs.c
+++ b/src/ap/acs.c
@@ -292,18 +292,12 @@ static void acs_fail(struct hostapd_ifac
static long double
acs_survey_interference_factor(struct freq_survey *survey, s8 min_nf)
{
- long double factor, busy, total;
+ long double factor, busy = 0, total;
if (survey->filled & SURVEY_HAS_CHAN_TIME_BUSY)
busy = survey->channel_time_busy;
else if (survey->filled & SURVEY_HAS_CHAN_TIME_RX)
busy = survey->channel_time_rx;
- else {
- /* This shouldn't really happen as survey data is checked in
- * acs_sanity_check() */
- wpa_printf(MSG_ERROR, "ACS: Survey data missing");
- return 0;
- }
total = survey->channel_time;
@@ -395,20 +389,19 @@ static int acs_usable_vht80_chan(struct
static int acs_survey_is_sufficient(struct freq_survey *survey)
{
if (!(survey->filled & SURVEY_HAS_NF)) {
+ survey->nf = -95;
wpa_printf(MSG_INFO, "ACS: Survey is missing noise floor");
- return 0;
}
if (!(survey->filled & SURVEY_HAS_CHAN_TIME)) {
+ survey->channel_time = 0;
wpa_printf(MSG_INFO, "ACS: Survey is missing channel time");
- return 0;
}
if (!(survey->filled & SURVEY_HAS_CHAN_TIME_BUSY) &&
!(survey->filled & SURVEY_HAS_CHAN_TIME_RX)) {
wpa_printf(MSG_INFO,
"ACS: Survey is missing RX and busy time (at least one is required)");
- return 0;
}
return 1;