Global txpower in ath

[Sam Pierson]

Is there a way to check the txpow in sysctl or something
along those lines?  I'm changing txpower and it appears
as though it will do a reset every once in awhile.  From 
what I can gather from if_ath.c, it looks like ath_init
resets the txpow as well.  I'd like to know whether or not
my originally intended txpow is still being respected.

-Sam

On 8/10/05, Sam Leffler <sam at errno.com> wrote:
> Sam Pierson wrote:
> > I noticed that when I control the signal strength through
> > ifconfig, I can effectively reduce the signal when I set it
> > as something like:  ifconfig ath0 txpower 1.  I have read
> > that this input is device driver dependent and I couldn't
> > find anything in the interface that handles txcontrol.  Are
> > these values taken in exactly or are they rounded to some
> > less fine-grained control number?  Thanks,
> 
> The current support has a limited number of settings for the tx power.
> I don't recall how many there are but it's chip dependent and possibly
> also frequency-specific.  5212 parts are capable of controlling txpower
> on a per-packet basis but getting it "right" has proven very hard and is
> not yet supported.
> 
>         Sam
>