Bad host-vased AP performace -- and qouple of questions about FreeBSD WiFi stack tuning

[Adrian Chadd]

2011/8/9 Lev Serebryakov <lev at serebryakov.spb.ru>:
> Hello, Adrian.
> You wrote 9 августа 2011 г., 14:14:19:
>
>> txpower 15 is actually 15dBm. Ie, try "ifconfig wlan0 txpower 1.5" :-)
>  Bernhard Schmidt says, that iwn(4) uses half-dBm units and "txpower
> 30" on iwn(4) means 15dBm physically.

Right. I'll double-check with Bernhard as he's been knee deep in the
iwn code. But I can tell you that the value passed from net80211 to
ath is 2x the ifconfig power, as the ifconfig txpower is in 0.5 dBm
units. So ifconfig wlanX txpower Y ends up storing a txpower value of
2*Y, and that's what ath gets. I bet iwn gets the same.


Adrian