mirror of
git://git.openwrt.org/openwrt/openwrt.git
synced 2025-11-03 22:44:27 -05:00
37 lines
1.2 KiB
Diff
37 lines
1.2 KiB
Diff
From: Felix Fietkau <nbd@nbd.name>
|
|
Date: Sat, 25 Jun 2022 23:10:19 +0200
|
|
Subject: [PATCH] mac80211: only accumulate airtime deficit for active
|
|
clients
|
|
|
|
When a client does not generate any local tx activity, accumulating airtime
|
|
deficit for the round-robin scheduler can be harmful. If this goes on for too
|
|
long, the deficit could grow quite large, which might cause unreasonable
|
|
initial latency once the client becomes active
|
|
|
|
Signed-off-by: Felix Fietkau <nbd@nbd.name>
|
|
---
|
|
|
|
--- a/net/mac80211/sta_info.c
|
|
+++ b/net/mac80211/sta_info.c
|
|
@@ -1900,6 +1900,7 @@ void ieee80211_sta_register_airtime(stru
|
|
struct ieee80211_local *local = sta->sdata->local;
|
|
u8 ac = ieee80211_ac_from_tid(tid);
|
|
u32 airtime = 0;
|
|
+ u32 diff;
|
|
|
|
if (sta->local->airtime_flags & AIRTIME_USE_TX)
|
|
airtime += tx_airtime;
|
|
@@ -1909,7 +1910,11 @@ void ieee80211_sta_register_airtime(stru
|
|
spin_lock_bh(&local->active_txq_lock[ac]);
|
|
sta->airtime[ac].tx_airtime += tx_airtime;
|
|
sta->airtime[ac].rx_airtime += rx_airtime;
|
|
- sta->airtime[ac].deficit -= airtime;
|
|
+
|
|
+ diff = (u32)jiffies - sta->airtime[ac].last_active;
|
|
+ if (diff <= AIRTIME_ACTIVE_DURATION)
|
|
+ sta->airtime[ac].deficit -= airtime;
|
|
+
|
|
spin_unlock_bh(&local->active_txq_lock[ac]);
|
|
}
|
|
EXPORT_SYMBOL(ieee80211_sta_register_airtime);
|