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mac80211: fix mesh queue selection issue

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Signed-off-by: Felix Fietkau <nbd@nbd.name>
(cherry-picked from commit 51e9d496ba7958fb9f2d3eb4bc7f257837145dd0)
This commit is contained in:
Felix Fietkau 2022-07-02 16:53:54 +02:00
parent 158a5af801
commit a3946a7cd1
1 changed files with 28 additions and 0 deletions
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package/kernel/mac80211/patches/subsys/338-mac80211-fix-queue-selection-for-mesh-OCB-interfaces.patch Normal file
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From: Felix Fietkau <nbd@nbd.name>
Date: Sat, 2 Jul 2022 16:41:32 +0200
Subject: [PATCH] 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>
---
--- a/net/mac80211/wme.c
+++ b/net/mac80211/wme.c
@@ -147,8 +147,8 @@ u16 __ieee80211_select_queue(struct ieee
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;