mac80211: send control port protocol frames to the VO queue

commit 1bf4bbb4024dcdab5e57634dd8ae1072d42a53ac upstream.

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

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/net/mac80211/wme.c b/net/mac80211/wme.c
index afba19cb6f87af534f67904b96c0efcd7f421896..a282fddf8b000e6f5beb11576e15857cbd9f8a88 100644 (file)
--- a/net/mac80211/wme.c
+++ b/net/mac80211/wme.c
@@ -153,6 +153,11 @@ 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 */
        skb->priority = cfg80211_classify8021d(skb);