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mac80211: fix an issue with the TXQ scheduling API and powersave clients

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Signed-off-by: Felix Fietkau <nbd@nbd.name>
This commit is contained in:
Felix Fietkau 2019-03-19 12:02:35 +01:00
parent ca9ad880f2
commit 38860fe2e4
1 changed files with 31 additions and 0 deletions
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package/kernel/mac80211/patches/subsys/359-mac80211-un-schedule-TXQs-on-powersave-start.patch Normal file
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@ -0,0 +1,31 @@
From: Felix Fietkau <nbd@nbd.name>
Date: Tue, 19 Mar 2019 11:36:12 +0100
Subject: [PATCH] mac80211: un-schedule TXQs on powersave start
Once a station enters powersave, its queues should not be returned by
ieee80211_next_txq() anymore. They will be re-scheduled again after the
station has woken up again
Fixes: 1866760096bf4 ("mac80211: Add TXQ scheduling API")
Signed-off-by: Felix Fietkau <nbd@nbd.name>
---
--- a/net/mac80211/rx.c
+++ b/net/mac80211/rx.c
@@ -1508,7 +1508,15 @@ static void sta_ps_start(struct sta_info
return;
for (tid = 0; tid < ARRAY_SIZE(sta->sta.txq); tid++) {
- if (txq_has_queue(sta->sta.txq[tid]))
+ struct ieee80211_txq *txq = sta->sta.txq[tid];
+ struct txq_info *txqi = to_txq_info(txq);
+
+ spin_lock(&local->active_txq_lock[txq->ac]);
+ if (!list_empty(&txqi->schedule_order))
+ list_del_init(&txqi->schedule_order);
+ spin_unlock(&local->active_txq_lock[txq->ac]);
+
+ if (txq_has_queue(txq))
set_bit(tid, &sta->txq_buffered_tids);
else
clear_bit(tid, &sta->txq_buffered_tids);