| Message ID | 20191116181233.1037-2-thomas@adapt-ip.com (mailing list archive) |
|---|---|
| State | Superseded |
| Delegated to: | Johannes Berg |
| Headers | show |
| Series | mac80211: consider QoS Null frames for STA_NULLFUNC_ACKED | expand |
diff --git a/net/mac80211/status.c b/net/mac80211/status.c index ab8ba5835ca0..5a3d645fe1bc 100644 --- a/net/mac80211/status.c +++ b/net/mac80211/status.c @@ -1030,7 +1030,8 @@ static void __ieee80211_tx_status(struct ieee80211_hw *hw, I802_DEBUG_INC(local->dot11FailedCount); } - if (ieee80211_is_nullfunc(fc) && ieee80211_has_pm(fc) && + if ((ieee80211_is_nullfunc(fc) || ieee80211_is_qos_nullfunc(fc)) && + ieee80211_has_pm(fc) && ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS) && !(info->flags & IEEE80211_TX_CTL_INJECTED) && local->ps_sdata && !(local->scanning)) {
Commit 7b6ddeaf27ec ("mac80211: use QoS NDP for AP probing") let STAs send QoS Null frames as PS triggers if the AP was a QoS STA. However, the mac80211 PS stack relies on an interface flag IEEE80211_STA_NULLFUNC_ACKED for determining trigger frame ACK, which was not being set for acked non-QoS Null frames. The effect is an inability to trigger hardware sleep via IEEE80211_CONF_PS since the QoS Null frame was seemingly never acked. This bug only applies to drivers which set both IEEE80211_HW_REPORTS_TX_ACK_STATUS and IEEE80211_HW_PS_NULLFUNC_STACK. Detect the acked QoS Null frame to restore STA power save. Fixes: 7b6ddeaf27ec ("mac80211: use QoS NDP for AP probing") Signed-off-by: Thomas Pedersen <thomas@adapt-ip.com> --- net/mac80211/status.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)