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-rw-r--r--package/kernel/mac80211/patches/341-mac80211-minstrel-make-prob_ewma-u16-instead-of-u32.patch20
1 files changed, 20 insertions, 0 deletions
diff --git a/package/kernel/mac80211/patches/341-mac80211-minstrel-make-prob_ewma-u16-instead-of-u32.patch b/package/kernel/mac80211/patches/341-mac80211-minstrel-make-prob_ewma-u16-instead-of-u32.patch
new file mode 100644
index 0000000000..570cd19ee4
--- /dev/null
+++ b/package/kernel/mac80211/patches/341-mac80211-minstrel-make-prob_ewma-u16-instead-of-u32.patch
@@ -0,0 +1,20 @@
+From: Felix Fietkau <nbd@nbd.name>
+Date: Wed, 14 Dec 2016 20:19:56 +0100
+Subject: [PATCH] mac80211: minstrel: make prob_ewma u16 instead of u32
+
+Saves about 1.2 KiB memory per station
+
+Signed-off-by: Felix Fietkau <nbd@nbd.name>
+---
+
+--- a/net/mac80211/rc80211_minstrel.h
++++ b/net/mac80211/rc80211_minstrel.h
+@@ -59,7 +59,7 @@ struct minstrel_rate_stats {
+ /* statistis of packet delivery probability
+ * prob_ewma - exponential weighted moving average of prob
+ * prob_ewmsd - exp. weighted moving standard deviation of prob */
+- unsigned int prob_ewma;
++ u16 prob_ewma;
+ u16 prob_ewmv;
+
+ /* maximum retry counts */