Channel Utilization?

For Developers
1

Hi,
does somebody know if I can get he channel Utilization information somewhere?
In hostapd.h under struct hostapd_iface is a entry called channel_utilization. I thought that gives me informatin about the utilization of the channel. ^^
But this value contains always zero. And is only a u8.

Or is there some Programm that already prints out the channel utilization?

2

You want to make a "survey" to see how many AP are on specified 2.4ghz channel ?

3

Actually No. But the number of AP on a channel has something to do with it:
Channel Utilization

Furthermore can you tell me how to get the number of APs on a channel?
Is this the int num_ap in the hostap.h?
Furthermore the ap_info has this values:

int channel;
int ht_support;

If someone is interested in the number of stations that's connected to the AP you can read the value in struct hostapd_data -> int num_sta.

4

A u8 is ok. Channel utilization is normalized to a value between 0 and 255:

iface->channel_utilization = dividend * 255 / divisor;

But I think my Acer C7 v2 or WDR4300 isn't supporting channel utilization...

5

Ok there is a patch for the athk9 but I think it was not admitted in lede:

https://www.mail-archive.com/cerowrt-devel@lists.bufferbloat.net/msg04607.html

And I can't find any further information.

6

Ok I found the solution!

The value

bss_load_update_period

has to be set in the config!

To try just add under

/lib/netfid/hostapd.sh

the parameter

append bss_conf "bss_load_update_period=50" "$N"

...