| From | Sasha Levin <> | Subject | [PATCH AUTOSEL 4.19 020/209] mt76: fix handling ps-poll frames | Date | Tue, 12 Nov 2019 20:47:16 -0500 |
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From: Felix Fietkau <nbd@nbd.name>
[ Upstream commit 36d910960fae3f9e74bedf3e0ef39ee26bdaa51f ]
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> Signed-off-by: Sasha Levin <sashal@kernel.org> --- drivers/net/wireless/mediatek/mt76/mac80211.c | 6 ++++++ 1 file changed, 6 insertions(+)
diff --git a/drivers/net/wireless/mediatek/mt76/mac80211.c b/drivers/net/wireless/mediatek/mt76/mac80211.c index ade4a2029a24a..1b5abd4816ed7 100644 --- a/drivers/net/wireless/mediatek/mt76/mac80211.c +++ b/drivers/net/wireless/mediatek/mt76/mac80211.c @@ -548,6 +548,12 @@ 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; -- 2.20.1
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