When firmware reports a beacon miss, ath12k queues connection_loss_work as a 3-second backup timer that forces a full VIF disconnect via ieee80211_connection_loss(). This work can only be cancelled when a beacon frame arrives through WMI in ath12k_mac_handle_beacon_iter(). In MLO, this mechanism causes periodic spurious disconnections because the firmware does not reliably forward beacon frames to the host via WMI, making the cancellation path ineffective. The result is a full VIF disconnect every ~16 seconds during normal MLO operation, easily reproducible under heavy traffic. Skip queueing connection_loss_work for MLO VIFs. The mac80211 AP probe triggered by ieee80211_beacon_loss() is sufficient to detect real AP unreachability. Other MLO-capable drivers such as mt76 and rtw89 similarly rely on ieee80211_beacon_loss() without adding a backup disconnect timer. Tested on WCN7850 with MLO (Wi-Fi 7). Signed-off-by: Jose Ignacio Tornos Martinez --- drivers/net/wireless/ath/ath12k/mac.c | 11 +++++++++-- 1 file changed, 9 insertions(+), 2 deletions(-) diff --git a/drivers/net/wireless/ath/ath12k/mac.c b/drivers/net/wireless/ath/ath12k/mac.c index af09153ad9d9..dfd69822c5ce 100644 --- a/drivers/net/wireless/ath/ath12k/mac.c +++ b/drivers/net/wireless/ath/ath12k/mac.c @@ -2008,9 +2008,16 @@ void ath12k_mac_handle_beacon_miss(struct ath12k *ar, * (done by mac80211) succeeds but beacons do not resume then it * doesn't make sense to continue operation. Queue connection loss work * which can be cancelled when beacon is received. + * + * Skip for MLO because connection_loss_work disconnects the entire + * VIF based on a single link's beacon miss, and its cancellation + * mechanism (beacon reception via WMI) is unreliable. The mac80211 + * probe triggered by ieee80211_beacon_loss() above is sufficient + * to detect real AP unreachability. */ - ieee80211_queue_delayed_work(hw, &arvif->connection_loss_work, - ATH12K_CONNECTION_LOSS_HZ); + if (!ieee80211_vif_is_mld(vif)) + ieee80211_queue_delayed_work(hw, &arvif->connection_loss_work, + ATH12K_CONNECTION_LOSS_HZ); } static void ath12k_mac_vif_sta_connection_loss_work(struct work_struct *work) -- 2.54.0