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Commit 0217eefa authored by Felix Fietkau's avatar Felix Fietkau Committed by Johannes Berg
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mac80211: minstrel: reduce MINSTREL_SCALE 



The loss of a bit of extra precision does not hurt the calculation, 12
bits is still enough to calculate probabilities well. Reducing the scale
makes it easier to avoid overflows

Signed-off-by: default avatarFelix Fietkau <nbd@nbd.name>
Signed-off-by: default avatarJohannes Berg <johannes.berg@intel.com>
parent 1109dc39

net/mac80211/rc80211_minstrel.h

+1 −1
Original line number Diff line number Diff line
@@ -14,7 +14,7 @@ 
#define SAMPLE_COLUMNS	10	/* number of columns in sample table */



/* scaled fraction values */

#define MINSTREL_SCALE  16

#define MINSTREL_SCALE  12

#define MINSTREL_FRAC(val, div) (((val) << MINSTREL_SCALE) / div)

#define MINSTREL_TRUNC(val) ((val) >> MINSTREL_SCALE)