Re: sta_info->fail_avg

["Luis R. Rodriguez" <lrodriguez@atheros.com>]

On Wed, Sep 10, 2008 at 10:15:12PM -0700, Javier Cardona wrote:
> Johannes,
> 
> On Wed, Sep 10, 2008 at 4:59 PM, Johannes Berg
> <johannes@sipsolutions.net> wrote:
> > Hi Luis,
> >
> > Can you explain what you're using this for in the mesh code?
> 
> It is used to estimate the average retransmissions that will be
> required to send a nominal frame over a given peer link.
> That's one component of the airtime link metric.
> 
> > I do know that neither ath9k's nor Intel's rate
> > control algorithms ever set it so it'll always be zero.
> 
> In that case transmission failures will not be taken into account and
> nodes with that hardware will report a lower (better) link metric than
> what they should.  In other words, those nodes will attract mesh
> traffic, which will provide a strong incentive for the driver
> maintainers to set that value correctly :)

Neither of our drivers support Mesh yet though so this is good to know,
once we do add it (or someone does).

  Luis