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Subject[PATCH 4.19 517/639] mac80211: minstrel_ht: fix per-group max throughput rate initialization
Date
From: Felix Fietkau <nbd@nbd.name>

[ Upstream commit 56dd918ff06e3ee24d8067e93ed12b2a39e71394 ]

The group number needs to be multiplied by the number of rates per group
to get the full rate index

Fixes: 5935839ad735 ("mac80211: improve minstrel_ht rate sorting by throughput & probability")
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Link: https://lore.kernel.org/r/20190820095449.45255-1-nbd@nbd.name
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
net/mac80211/rc80211_minstrel_ht.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/mac80211/rc80211_minstrel_ht.c b/net/mac80211/rc80211_minstrel_ht.c
index 3d5520776655d..0b60e330c115b 100644
--- a/net/mac80211/rc80211_minstrel_ht.c
+++ b/net/mac80211/rc80211_minstrel_ht.c
@@ -529,7 +529,7 @@ minstrel_ht_update_stats(struct minstrel_priv *mp, struct minstrel_ht_sta *mi)

/* (re)Initialize group rate indexes */
for(j = 0; j < MAX_THR_RATES; j++)
- tmp_group_tp_rate[j] = group;
+ tmp_group_tp_rate[j] = MCS_GROUP_RATES * group;

for (i = 0; i < MCS_GROUP_RATES; i++) {
if (!(mi->supported[group] & BIT(i)))
--
2.20.1


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