diff options
| author | Felix Fietkau <nbd@nbd.name> | 2022-06-25 23:24:05 +0200 |
|---|---|---|
| committer | Johannes Berg <johannes.berg@intel.com> | 2022-07-01 10:51:41 +0200 |
| commit | 942741dabcb43236006f557178801ce2051e69f9 (patch) | |
| tree | c6ac91b8b5081264c1fb18343f89bf0b621bc60e /net/mac80211/status.c | |
| parent | 7f884baae68adc85db55b97e3fc903a1f20bd1f9 (diff) | |
| download | linux-942741dabcb43236006f557178801ce2051e69f9.tar.bz2 | |
wifi: mac80211: switch airtime fairness back to deficit round-robin scheduling
This reverts commits 6a789ba679d652587532cec2a0e0274fda172f3b and
2433647bc8d983a543e7d31b41ca2de1c7e2c198.
The virtual time scheduler code has a number of issues:
- queues slowed down by hardware/firmware powersave handling were not properly
handled.
- on ath10k in push-pull mode, tx queues that the driver tries to pull from
were starved, causing excessive latency
- delay between tx enqueue and reported airtime use were causing excessively
bursty tx behavior
The bursty behavior may also be present on the round-robin scheduler, but there
it is much easier to fix without introducing additional regressions
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Acked-by: Toke Høiland-Jørgensen <toke@toke.dk>
Link: https://lore.kernel.org/r/20220625212411.36675-1-nbd@nbd.name
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'net/mac80211/status.c')
| -rw-r--r-- | net/mac80211/status.c | 19 |
1 files changed, 0 insertions, 19 deletions
diff --git a/net/mac80211/status.c b/net/mac80211/status.c index 5c2202a7ea1c..9bd4d336d444 100644 --- a/net/mac80211/status.c +++ b/net/mac80211/status.c @@ -998,25 +998,6 @@ static void __ieee80211_tx_status(struct ieee80211_hw *hw, if (!(info->flags & IEEE80211_TX_CTL_INJECTED) && acked) ieee80211_frame_acked(sta, skb); - } else if (wiphy_ext_feature_isset(local->hw.wiphy, - NL80211_EXT_FEATURE_AIRTIME_FAIRNESS)) { - struct ieee80211_sub_if_data *sdata; - struct ieee80211_txq *txq; - u32 airtime; - - /* Account airtime to multicast queue */ - sdata = ieee80211_sdata_from_skb(local, skb); - - if (sdata && (txq = sdata->vif.txq)) { - airtime = info->status.tx_time ?: - ieee80211_calc_expected_tx_airtime(hw, - &sdata->vif, - NULL, - skb->len, - false); - - ieee80211_register_airtime(txq, airtime, 0); - } } /* SNMP counters |