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wifi: mt76: add per-link beacon monitoring for MLO

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With chanctx drivers using hardware scan or remain-on-channel,
mac80211 does not know when the radio goes off-channel, which breaks
its software beacon loss detection.

Implement per-link beacon monitoring in the driver. Track the last
beacon timestamp per link and check for beacon loss periodically from
the mac_work handler.

Beacon monitoring is initialized on association and on late link
activation, and cleared on disassociation. The beacon_mon_last
timestamp is reset when returning from offchannel and after channel
switches to prevent false beacon loss detection.

Signed-off-by: Felix Fietkau <[email protected]>
This commit is contained in:
Felix Fietkau
2026-03-09 04:51:09 +00:00
parent 447cc8c89c
commit fb6a584e71
6 changed files with 150 additions and 5 deletions
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scan.c
-1
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@@ -96,7 +96,6 @@ void mt76_scan_rx_beacon(struct mt76_dev *dev, struct ieee80211_channel *chan)
dev->scan.beacon_received = true;
ieee80211_queue_delayed_work(phy->hw, &dev->scan_work, 0);
}
EXPORT_SYMBOL_GPL(mt76_scan_rx_beacon);
void mt76_scan_work(struct work_struct *work)
{