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mt76: fix handling ps-poll frames

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[ Upstream commit 36d910960f ]

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>
This commit is contained in:
Felix Fietkau 2018-09-29 13:13:09 +02:00 • committed by Greg Kroah-Hartman
commit 741a445a88
1 changed files with 6 additions and 0 deletions
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6
drivers/net/wireless/mediatek/mt76/mac80211.c
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@ -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;