diff options
Diffstat (limited to 'package/kernel/mac80211/patches/subsys/306-mac80211-remove-STA-txq-pending-airtime-underflow-wa.patch')
| -rw-r--r-- | package/kernel/mac80211/patches/subsys/306-mac80211-remove-STA-txq-pending-airtime-underflow-wa.patch | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/package/kernel/mac80211/patches/subsys/306-mac80211-remove-STA-txq-pending-airtime-underflow-wa.patch b/package/kernel/mac80211/patches/subsys/306-mac80211-remove-STA-txq-pending-airtime-underflow-wa.patch new file mode 100644 index 0000000000..ab3a77e19b --- /dev/null +++ b/package/kernel/mac80211/patches/subsys/306-mac80211-remove-STA-txq-pending-airtime-underflow-wa.patch @@ -0,0 +1,31 @@ +From: Felix Fietkau <nbd@nbd.name> +Date: Sat, 25 Jul 2020 10:42:30 +0200 +Subject: [PATCH] mac80211: remove STA txq pending airtime underflow + warning + +This warning can trigger if there is a mismatch between frames that were +sent with the sta pointer set vs tx status frames reported for the sta address. + +This can happen due to race conditions on re-creating stations, or even +in the case of .sta_add/remove being used instead of .sta_state, which can cause +frames to be sent to a station that has not been uploaded yet. + +If there is an actual underflow issue, it should show up in the device airtime +warning below, so it is better to remove this one. + +Signed-off-by: Felix Fietkau <nbd@nbd.name> +--- + +--- a/net/mac80211/sta_info.c ++++ b/net/mac80211/sta_info.c +@@ -1924,9 +1924,7 @@ void ieee80211_sta_update_pending_airtim + if (sta) { + tx_pending = atomic_sub_return(tx_airtime, + &sta->airtime[ac].aql_tx_pending); +- if (WARN_ONCE(tx_pending < 0, +- "STA %pM AC %d txq pending airtime underflow: %u, %u", +- sta->addr, ac, tx_pending, tx_airtime)) ++ if (tx_pending < 0) + atomic_cmpxchg(&sta->airtime[ac].aql_tx_pending, + tx_pending, 0); + } |