wifi: mac80211: fix qos on mesh interfaces

When ieee80211_select_queue is called for mesh, the sta pointer is usually
NULL, since the nexthop is looked up much later in the tx path.
Explicitly check for unicast address in that case in order to make qos work
again.

Cc: stable@vger.kernel.org
Fixes: 50e2ab392919 ("wifi: mac80211: fix queue selection for mesh/OCB interfaces")
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Link: https://lore.kernel.org/r/20230314095956.62085-1-nbd@nbd.name
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

diff --git a/net/mac80211/wme.c b/net/mac80211/wme.c
index a12c63638680122f7f449fba4060066c78a07c14..1601be5764145d3c736c59699ccc3873a726750f 100644 (file)
--- a/net/mac80211/wme.c
+++ b/net/mac80211/wme.c
@@ -147,6 +147,7 @@ u16 ieee80211_select_queue_80211(struct ieee80211_sub_if_data *sdata,
 u16 ieee80211_select_queue(struct ieee80211_sub_if_data *sdata,
                           struct sta_info *sta, struct sk_buff *skb)
 {
+       const struct ethhdr *eth = (void *)skb->data;
        struct mac80211_qos_map *qos_map;
        bool qos;
 
@@ -154,8 +155,9 @@ u16 ieee80211_select_queue(struct ieee80211_sub_if_data *sdata,
        skb_get_hash(skb);
 
        /* all mesh/ocb stations are required to support WME */
-       if (sta && (sdata->vif.type == NL80211_IFTYPE_MESH_POINT ||
-                   sdata->vif.type == NL80211_IFTYPE_OCB))
+       if ((sdata->vif.type == NL80211_IFTYPE_MESH_POINT &&
+           !is_multicast_ether_addr(eth->h_dest)) ||
+           (sdata->vif.type == NL80211_IFTYPE_OCB && sta))
                qos = true;
        else if (sta)
                qos = sta->sta.wme;