[PATCH] mac80211: fix WMM AC default for non-QoS data frames

[Felix Fietkau <nbd@openwrt.org>]

The WMM AC selection added to the monitor mode selection function 
accidentally assigns non-QoS data frames to the same AC as mgmt frames 
(VO). This is not serious, but should be fixed anyway. This patch 
assigns them to the BE AC instead.

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
---
--- a/net/mac80211/iface.c
+++ b/net/mac80211/iface.c
@@ -696,10 +696,14 @@ static u16 ieee80211_monitor_select_queu
 
 	hdr = (void *)((u8 *)skb->data + le16_to_cpu(rtap->it_len));
 
-	if (!ieee80211_is_data_qos(hdr->frame_control)) {
+	if (!ieee80211_is_data(hdr->frame_control)) {
 		skb->priority = 7;
 		return ieee802_1d_to_ac[skb->priority];
 	}
+	if (!ieee80211_is_data_qos(hdr->frame_control)) {
+		skb->priority = 0;
+		return ieee802_1d_to_ac[skb->priority];
+	}
 
 	p = ieee80211_get_qos_ctl(hdr);
 	skb->priority = *p & IEEE80211_QOS_CTL_TAG1D_MASK;