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Re: [PATCH] mac80211: use capped prob when computing throughputs

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On Wed, Nov 20, 2013 at 05:57:06PM +0100, Felix Fietkau wrote:
> On 2013-11-20 08:32, Felix Fietkau wrote:
> > On 2013-11-20 01:51, Karl Beldan wrote:
> >> From: Karl Beldan <karl.beldan@xxxxxxxxxxxxxxxx>
> >> 
> >> Commit 3e8b1eb "mac80211/minstrel_ht: improve rate selection stability"
> >> introduced a local capped prob in minstrel_ht_calc_tp but omitted to use
> >> it to compute the rate throughput.
> >> 
> >> Signed-off-by: Karl Beldan <karl.beldan@xxxxxxxxxxxxxxxx>
> >> CC: Felix Fietkau <nbd@xxxxxxxxxxx>
> > Nice catch!
> > Acked-by: Felix Fietkau <nbd@xxxxxxxxxxx>
> Sorry, I need to revoke that ACK - there's a bug in this patch:
> 
> > -	tp = 1000000 * ((mr->probability * 1000) / nsecs);
> > +	tp = 1000000 * (prob * 1000) / nsecs;
> Removing the outer () is wrong, it leads to overflow that makes all
> throughput values 0.
> 
Do you handle this one or I resend ?
 
Karl
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