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wifi: mt76: send nullfunc PS frames on offchannel transitions

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Since mt76 uses chanctx, mac80211 does not send nullfunc power save
notifications when the driver goes offchannel for scan or ROC.
Add mt76_offchannel_notify() to send nullfunc PM=1 before going
offchannel and PM=0 after returning, so that the AP can buffer
frames during the absence.

For MLO, iterate all vif links on the phy and set
IEEE80211_TX_CTRL_MLO_LINK so that the driver's tx_prepare_skb
resolves the correct per-link wcid.

Signed-off-by: Felix Fietkau <[email protected]>
This commit is contained in:
Felix Fietkau
2026-03-07 15:44:38 +00:00
parent 273c6f60cc
commit b451ffe2c0
4 changed files with 117 additions and 4 deletions
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scan.c
+6 -1
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@@ -17,8 +17,10 @@ static void mt76_scan_complete(struct mt76_dev *dev, bool abort)
clear_bit(MT76_SCANNING, &phy->state);
if (dev->scan.chan && phy->main_chandef.chan && phy->offchannel &&
!test_bit(MT76_MCU_RESET, &dev->phy.state))
!test_bit(MT76_MCU_RESET, &dev->phy.state)) {
mt76_set_channel(phy, &phy->main_chandef, false);
mt76_offchannel_notify(phy, false);
}
mt76_put_vif_phy_link(phy, dev->scan.vif, dev->scan.mlink);
memset(&dev->scan, 0, sizeof(dev->scan));
if (!test_bit(MT76_MCU_RESET, &dev->phy.state))
@@ -124,12 +126,15 @@ void mt76_scan_work(struct work_struct *work)
if (dev->scan.chan && phy->num_sta && phy->offchannel) {
dev->scan.chan = NULL;
mt76_set_channel(phy, &phy->main_chandef, false);
mt76_offchannel_notify(phy, false);
goto out;
}
dev->scan.chan = req->channels[dev->scan.chan_idx++];
offchannel = mt76_offchannel_chandef(phy, dev->scan.chan, &chandef);
if (offchannel)
mt76_offchannel_notify(phy, true);
mt76_set_channel(phy, &chandef, offchannel);
if (!req->n_ssids)