mac80211: send control port protocol frames to the VO queue

Improves reliability of wifi connections with WPA, since authentication
frames are prioritized over normal traffic and also typically exempt
from aggregation.

Cc: stable@vger.kernel.org
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

diff --git a/net/mac80211/wme.c b/net/mac80211/wme.c
index 21211c60ca988992034bfc330977e846c3fc7010..d51422c778dee359bec450c75b77bfb24ca712f4 100644 (file)
--- a/net/mac80211/wme.c
+++ b/net/mac80211/wme.c
@@ -154,6 +154,11 @@ u16 ieee80211_select_queue(struct ieee80211_sub_if_data *sdata,
                return IEEE80211_AC_BE;
        }
 
+       if (skb->protocol == sdata->control_port_protocol) {
+               skb->priority = 7;
+               return ieee80211_downgrade_queue(sdata, skb);
+       }
+
        /* use the data classifier to determine what 802.1d tag the
         * data frame has */
        rcu_read_lock();