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[1/2] mt76: fix handling ps-poll frames

Message ID 20180929130550.86187-1-nbd@nbd.name (mailing list archive)
State Accepted
Delegated to: Kalle Valo
Headers show
Series [1/2] mt76: fix handling ps-poll frames | expand

Commit Message

Felix Fietkau Sept. 29, 2018, 1:05 p.m. UTC
Hardware station lookup for pspoll frames can fail, which makes the driver
ignore ps-poll frames. Fix the resulting powersave issues by looking up
the station for pspoll frames in software

Signed-off-by: Felix Fietkau <nbd@nbd.name>
---
 drivers/net/wireless/mediatek/mt76/mac80211.c | 6 ++++++
 1 file changed, 6 insertions(+)
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Patch

diff --git a/drivers/net/wireless/mediatek/mt76/mac80211.c b/drivers/net/wireless/mediatek/mt76/mac80211.c
index 639cbafc1d50..2a699e8b79bf 100644
--- a/drivers/net/wireless/mediatek/mt76/mac80211.c
+++ b/drivers/net/wireless/mediatek/mt76/mac80211.c
@@ -550,6 +550,12 @@  mt76_check_ps(struct mt76_dev *dev, struct sk_buff *skb)
 	struct mt76_wcid *wcid = status->wcid;
 	bool ps;
 
+	if (ieee80211_is_pspoll(hdr->frame_control) && !wcid) {
+		sta = ieee80211_find_sta_by_ifaddr(dev->hw, hdr->addr2, NULL);
+		if (sta)
+			wcid = status->wcid = (struct mt76_wcid *) sta->drv_priv;
+	}
+
 	if (!wcid || !wcid->sta)
 		return;