From: Loic Poulain <loic.poulain@xxxxxxxxxx>
The rate_idx is the index of the bitrate in the supported rate table.
However the 5Ghz band has a smaller legacy bitrate table than 2.4Ghz
since it does not have the DSSS bitrates (1, 2, 5.5, 11).
So in 5Ghz band the index should adjusted accrodingly (-4).
Signed-off-by: Loic Poulain <loic.poulain@xxxxxxxxxx>
[bod: Made sure fix is only applied if the rate_idx > n_bitrates]
Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@xxxxxxxxxx>
---
drivers/net/wireless/ath/wcn36xx/txrx.c | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/drivers/net/wireless/ath/wcn36xx/txrx.c b/drivers/net/wireless/ath/wcn36xx/txrx.c
index 80e96c2296af..05a84f82584c 100644
--- a/drivers/net/wireless/ath/wcn36xx/txrx.c
+++ b/drivers/net/wireless/ath/wcn36xx/txrx.c
@@ -230,6 +230,7 @@ int wcn36xx_rx_skb(struct wcn36xx *wcn, struct sk_buff *skb)
const struct wcn36xx_rate *rate;
struct ieee80211_hdr *hdr;
struct wcn36xx_rx_bd *bd;
+ struct ieee80211_supported_band *sband;
u16 fc, sn;
/*
@@ -270,6 +271,14 @@ int wcn36xx_rx_skb(struct wcn36xx *wcn, struct sk_buff *skb)
status.enc_flags = rate->encoding_flags;
status.bw = rate->bw;
status.rate_idx = rate->mcs_or_legacy_index;
+ sband = wcn->hw->wiphy->bands[status.band];
+
+ if (status.band == NL80211_BAND_5GHZ &&
+ status.encoding == RX_ENC_LEGACY &&
+ status.rate_idx >= sband->n_bitrates) {
+ /* no dsss rates in 5Ghz rates table */
+ status.rate_idx -= 4;
+ }
} else {
status.encoding = 0;
status.bw = 0;
--
2.27.0
