[PATCH wireless-next 3/8] wifi: mm81x: do not drop PS filtered frames in AP mode

[Lachlan Hodges <lachlan.hodges@morsemicro.com>]

When the firmware reports a frame as filtered because the station has
entered power save, the AP-mode path dropped the frame and returned
"handled". In AP mode mac80211 owns the per-station power-save
re-buffering, so the frame must instead be reported with
IEEE80211_TX_STAT_TX_FILTERED and left for mac80211 to re-queue once
the station wakes.

Return false for AP interfaces so the tx-status path flags the frame as
filtered rather than silently dropping it.

Assisted-by: Claude:claude-opus-5
Signed-off-by: Lachlan Hodges <lachlan.hodges@morsemicro.com>
---
 drivers/net/wireless/morsemicro/mm81x/skbq.c | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/drivers/net/wireless/morsemicro/mm81x/skbq.c b/drivers/net/wireless/morsemicro/mm81x/skbq.c
index 25655bd56d14..3bf15e7c38d8 100644
--- a/drivers/net/wireless/morsemicro/mm81x/skbq.c
+++ b/drivers/net/wireless/morsemicro/mm81x/skbq.c
@@ -231,10 +231,9 @@ static bool mm81x_tx_h_is_ps_filtered(struct mm81x_skbq *mq,
 	WARN_ON_ONCE(!(le32_to_cpu(tx_sts->flags) &
 		       MM81X_TX_STATUS_FLAGS_PS_FILTERED));
 
-	if (vif->type == NL80211_IFTYPE_AP) {
-		__mm81x_skbq_drop_pending_skb(mq, skb);
-		return true;
-	}
+	/* mac80211 buffers frames in AP mode */
+	if (vif->type == NL80211_IFTYPE_AP)
+		return false;
 
 	if (vif->type == NL80211_IFTYPE_STATION) {
 		mm81x_skbq_insert_pending(mq, skb, tx_sts->pkt_id);
-- 
2.43.0