diff options
| author | Ben Greear <greearb@candelatech.com> | 2021-03-30 16:07:49 -0700 |
|---|---|---|
| committer | Johannes Berg <johannes.berg@intel.com> | 2021-04-08 10:14:53 +0200 |
| commit | 7d73cd946d4bc7d44cdc5121b1c61d5d71425dea (patch) | |
| tree | 83e569a218ba2fad4c32cfba618e2a1d64420b4b /net | |
| parent | 1153a74768a9212daadbb50767aa400bc6a0c9b0 (diff) | |
| download | linux-7d73cd946d4bc7d44cdc5121b1c61d5d71425dea.tar.bz2 | |
mac80211: fix time-is-after bug in mlme
The incorrect timeout check caused probing to happen when it did
not need to happen. This in turn caused tx performance drop
for around 5 seconds in ath10k-ct driver. Possibly that tx drop
is due to a secondary issue, but fixing the probe to not happen
when traffic is running fixes the symptom.
Signed-off-by: Ben Greear <greearb@candelatech.com>
Fixes: 9abf4e49830d ("mac80211: optimize station connection monitor")
Acked-by: Felix Fietkau <nbd@nbd.name>
Link: https://lore.kernel.org/r/20210330230749.14097-1-greearb@candelatech.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'net')
| -rw-r--r-- | net/mac80211/mlme.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c index ce4e3855fec1..96f487fc0071 100644 --- a/net/mac80211/mlme.c +++ b/net/mac80211/mlme.c @@ -4707,7 +4707,10 @@ static void ieee80211_sta_conn_mon_timer(struct timer_list *t) timeout = sta->rx_stats.last_rx; timeout += IEEE80211_CONNECTION_IDLE_TIME; - if (time_is_before_jiffies(timeout)) { + /* If timeout is after now, then update timer to fire at + * the later date, but do not actually probe at this time. + */ + if (time_is_after_jiffies(timeout)) { mod_timer(&ifmgd->conn_mon_timer, round_jiffies_up(timeout)); return; } |