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wifi: mac80211: fix queue selection for mesh/OCB interfaces 

When using iTXQ, the code assumes that there is only one vif queue for
broadcast packets, using the BE queue. Allowing non-BE queue marking
violates that assumption and txq->ac == skb_queue_mapping is no longer
guaranteed. This can cause issues with queue handling in the driver and
also causes issues with the recent ATF change, resulting in an AQL
underflow warning.

Cc: stable@vger.kernel.org
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Link: https://lore.kernel.org/r/20220702145227.39356-1-nbd@nbd.name
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Felix Fietkau 2022-07-02 16:52:27 +02:00 committed by Johannes Berg
parent 8d70f33ed7
commit 50e2ab3929
1 changed files with 2 additions and 2 deletions
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4
net/mac80211/wme.c
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@ -147,8 +147,8 @@ u16 __ieee80211_select_queue(struct ieee80211_sub_if_data *sdata,
bool qos;
/* all mesh/ocb stations are required to support WME */
if (sdata->vif.type == NL80211_IFTYPE_MESH_POINT ||
sdata->vif.type == NL80211_IFTYPE_OCB)
if (sta && (sdata->vif.type == NL80211_IFTYPE_MESH_POINT ||
sdata->vif.type == NL80211_IFTYPE_OCB))
qos = true;
else if (sta)
qos = sta->sta.wme;