[PATCH 5.15 368/917] ath11k: fix packet drops due to incorrect 6 GHz freq value in rx status

Greg Kroah-Hartman
2021-11-16T00:54:06Z

From: Pradeep Kumar Chitrapu <pradeepc@codeaurora.org>

[ Upstream commit 9d6ae1f5cf733c0e8d7f904c501fd015c4b9f0f4 ]

Frequency in rx status is being filled incorrectly in the 6 GHz band as
channel number received is invalid in this case which is causing packet
drops. So fix that.

Fixes: 5dcf42f8b79d ("ath11k: Use freq instead of channel number in rx path")
Signed-off-by: Pradeep Kumar Chitrapu <pradeepc@codeaurora.org>
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20210722102054.43419-2-jouni@codeaurora.org
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/wireless/ath/ath11k/dp_rx.c | 9 ++++++---
drivers/net/wireless/ath/ath11k/wmi.c | 10 +++++++---
2 files changed, 13 insertions(+), 6 deletions(-)

diff --git a/drivers/net/wireless/ath/ath11k/dp_rx.c b/drivers/net/wireless/ath/ath11k/dp_rx.c
index af0a600ea067c..0ae6bebff801d 100644
--- a/drivers/net/wireless/ath/ath11k/dp_rx.c
+++ b/drivers/net/wireless/ath/ath11k/dp_rx.c
@@ -2337,8 +2337,10 @@ static void ath11k_dp_rx_h_ppdu(struct ath11k *ar, struct hal_rx_desc *rx_desc,
channel_num = meta_data;
center_freq = meta_data >> 16;

- if (center_freq >= 5935 && center_freq <= 7105) {
+ if (center_freq >= ATH11K_MIN_6G_FREQ &&
+ center_freq <= ATH11K_MAX_6G_FREQ) {
rx_status->band = NL80211_BAND_6GHZ;
+ rx_status->freq = center_freq;
} else if (channel_num >= 1 && channel_num <= 14) {
rx_status->band = NL80211_BAND_2GHZ;
} else if (channel_num >= 36 && channel_num <= 173) {
@@ -2356,8 +2358,9 @@ static void ath11k_dp_rx_h_ppdu(struct ath11k *ar, struct hal_rx_desc *rx_desc,
rx_desc, sizeof(struct hal_rx_desc));
}

- rx_status->freq = ieee80211_channel_to_frequency(channel_num,
- rx_status->band);
+ if (rx_status->band != NL80211_BAND_6GHZ)
+ rx_status->freq = ieee80211_channel_to_frequency(channel_num,
+ rx_status->band);

ath11k_dp_rx_h_rate(ar, rx_desc, rx_status);
}
diff --git a/drivers/net/wireless/ath/ath11k/wmi.c b/drivers/net/wireless/ath/ath11k/wmi.c
index a53eef8e2631c..99c0b81e496bf 100644
--- a/drivers/net/wireless/ath/ath11k/wmi.c
+++ b/drivers/net/wireless/ath/ath11k/wmi.c
@@ -6127,8 +6127,10 @@ static void ath11k_mgmt_rx_event(struct ath11k_base *ab, struct sk_buff *skb)
if (rx_ev.status & WMI_RX_STATUS_ERR_MIC)
status->flag |= RX_FLAG_MMIC_ERROR;

- if (rx_ev.chan_freq >= ATH11K_MIN_6G_FREQ) {
+ if (rx_ev.chan_freq >= ATH11K_MIN_6G_FREQ &&
+ rx_ev.chan_freq <= ATH11K_MAX_6G_FREQ) {
status->band = NL80211_BAND_6GHZ;
+ status->freq = rx_ev.chan_freq;
} else if (rx_ev.channel >= 1 && rx_ev.channel <= 14) {
status->band = NL80211_BAND_2GHZ;
} else if (rx_ev.channel >= 36 && rx_ev.channel <= ATH11K_MAX_5G_CHAN) {
@@ -6149,8 +6151,10 @@ static void ath11k_mgmt_rx_event(struct ath11k_base *ab, struct sk_buff *skb)

sband = &ar->mac.sbands[status->band];

- status->freq = ieee80211_channel_to_frequency(rx_ev.channel,
- status->band);
+ if (status->band != NL80211_BAND_6GHZ)
+ status->freq = ieee80211_channel_to_frequency(rx_ev.channel,
+ status->band);
+
status->signal = rx_ev.snr + ATH11K_DEFAULT_NOISE_FLOOR;
status->rate_idx = ath11k_mac_bitrate_to_idx(sband, rx_ev.rate / 100);

--
2.33.0