diff options
Diffstat (limited to 'package/kernel/mac80211/patches/subsys/345-mac80211-minstrel_ht-fix-rounding-error-in-throughpu.patch')
| -rw-r--r-- | package/kernel/mac80211/patches/subsys/345-mac80211-minstrel_ht-fix-rounding-error-in-throughpu.patch | 34 |
1 files changed, 0 insertions, 34 deletions
diff --git a/package/kernel/mac80211/patches/subsys/345-mac80211-minstrel_ht-fix-rounding-error-in-throughpu.patch b/package/kernel/mac80211/patches/subsys/345-mac80211-minstrel_ht-fix-rounding-error-in-throughpu.patch deleted file mode 100644 index 1df5dec039..0000000000 --- a/package/kernel/mac80211/patches/subsys/345-mac80211-minstrel_ht-fix-rounding-error-in-throughpu.patch +++ /dev/null @@ -1,34 +0,0 @@ -From: Felix Fietkau <nbd@nbd.name> -Date: Fri, 15 Jan 2021 12:15:06 +0100 -Subject: [PATCH] mac80211: minstrel_ht: fix rounding error in throughput - calculation - -On lower data rates, the throughput calculation has a significant rounding -error, causing rates like 48M and 54M OFDM to share the same throughput -value with >= 90% success probablity. - -This is because the result of the division (prob_avg * 1000) / nsecs -is really small (8 in this example). - -Improve accuracy by moving over some zeroes, making better use of the full -range of u32 before the division. - -Signed-off-by: Felix Fietkau <nbd@nbd.name> ---- - ---- a/net/mac80211/rc80211_minstrel_ht.c -+++ b/net/mac80211/rc80211_minstrel_ht.c -@@ -445,10 +445,9 @@ minstrel_ht_get_tp_avg(struct minstrel_h - * (prob is scaled - see MINSTREL_FRAC above) - */ - if (prob_avg > MINSTREL_FRAC(90, 100)) -- return MINSTREL_TRUNC(100000 * ((MINSTREL_FRAC(90, 100) * 1000) -- / nsecs)); -- else -- return MINSTREL_TRUNC(100000 * ((prob_avg * 1000) / nsecs)); -+ prob_avg = MINSTREL_FRAC(90, 100); -+ -+ return MINSTREL_TRUNC(100 * ((prob_avg * 1000000) / nsecs)); - } - - /* |