ath10k: fix WEP Shared authentication

Frames received from FW were treated incorrectly.
This led to stations being unable to associate to
WEP Shared ath10k AP. This was indicated by a
bizarre hostapd message:

  Unsupported authentication algorithm (36088)

Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

1 files changed, 5 insertions, 1 deletions

diff --git a/drivers/net/wireless/ath/ath10k/wmi.c b/drivers/net/wireless/ath/ath10k/wmi.c
index 1260a8d15dc3..9ea333a7789c 100644
--- a/drivers/net/wireless/ath/ath10k/wmi.c
+++ b/drivers/net/wireless/ath/ath10k/wmi.c
@@ -937,7 +937,11 @@ static int ath10k_wmi_event_mgmt_rx(struct ath10k *ar, struct sk_buff *skb)
         hdr = (struct ieee80211_hdr *)skb->data;
         fc = le16_to_cpu(hdr->frame_control);
 
-        if (fc & IEEE80211_FCTL_PROTECTED) {
+        /* FW delivers WEP Shared Auth frame with Protected Bit set and
+         * encrypted payload. However in case of PMF it delivers decrypted
+         * frames with Protected Bit set. */
+        if (ieee80211_has_protected(hdr->frame_control) &&
+            !ieee80211_is_auth(hdr->frame_control)) {
                 status->flag |= RX_FLAG_DECRYPTED | RX_FLAG_IV_STRIPPED |
                                 RX_FLAG_MMIC_STRIPPED;
                 hdr->frame_control = __cpu_to_le16(fc &