From da6d90e4f66aec481944fa1be440a0061c3fa155 Mon Sep 17 00:00:00 2001 From: Felix Fietkau Date: Sat, 7 Mar 2026 19:21:12 +0000 Subject: [PATCH] wifi: mt76: route nullfunc frames to PSD/ALTX queue ieee80211_is_data() returns true for nullfunc/QoS-nullfunc frames, so they bypass the PSD queue routing and go through the regular VO data queue. This means firmware processes them through the normal TID queue instead of the ALTX queue, which doesn't guarantee immediate transmission. Use ieee80211_is_data_present() instead, which returns false for both management frames and nullfunc/QoS-nullfunc (no payload), routing them to MT_TXQ_PSD. Firmware maps PSD to the ALTX queue, which transmits immediately without PS buffering. This only affects frames from the mt76_tx() pending path. Regular mac80211 TXQ scheduling is unchanged. Signed-off-by: Felix Fietkau --- tx.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tx.c b/tx.c index ab62591b..7b0fae69 100644 --- a/tx.c +++ b/tx.c @@ -632,7 +632,7 @@ mt76_txq_schedule_pending_wcid(struct mt76_phy *phy, struct mt76_wcid *wcid, if ((dev->drv->drv_flags & MT_DRV_HW_MGMT_TXQ) && !(info->flags & IEEE80211_TX_CTL_HW_80211_ENCAP) && - !ieee80211_is_data(hdr->frame_control) && + !ieee80211_is_data_present(hdr->frame_control) && (!ieee80211_is_bufferable_mmpdu(skb) || ieee80211_is_deauth(hdr->frame_control) || head == &wcid->tx_offchannel))