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31 lines
1.1 KiB
Diff
31 lines
1.1 KiB
Diff
From: Felix Fietkau <nbd@nbd.name>
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Date: Wed, 13 Jul 2022 07:32:26 +0200
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Subject: [PATCH] mac80211: exclude multicast packets from AQL pending airtime
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In AP mode, multicast traffic is handled very differently from normal traffic,
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especially if at least one client is in powersave mode.
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This means that multicast packets can be buffered a lot longer than normal
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unicast packets, and can eat up the AQL budget very quickly because of the low
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data rate.
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Along with the recent change to maintain a global PHY AQL limit, this can lead
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to significant latency spikes for unicast traffic.
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Since queueing multicast to hardware is currently not constrained by AQL limits
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anyway, let's just exclude it from the AQL pending airtime calculation entirely.
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Fixes: 8e4bac067105 ("wifi: mac80211: add a per-PHY AQL limit to improve fairness")
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Signed-off-by: Felix Fietkau <nbd@nbd.name>
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---
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--- a/net/mac80211/tx.c
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+++ b/net/mac80211/tx.c
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@@ -3792,7 +3792,7 @@ begin:
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encap_out:
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IEEE80211_SKB_CB(skb)->control.vif = vif;
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- if (vif &&
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+ if (tx.sta &&
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wiphy_ext_feature_isset(local->hw.wiphy, NL80211_EXT_FEATURE_AQL)) {
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bool ampdu = txq->ac != IEEE80211_AC_VO;
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u32 airtime;
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