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authorThomas Pedersen <thomas@adapt-ip.com>2019-11-18 21:35:38 -0800
committerJohannes Berg <johannes.berg@intel.com>2019-11-22 13:36:25 +0100
commit08a5bdde3812993cb8eb7aa9124703df0de28e4b (patch)
treef3623353647b3be3f73ea25a7f222e1be372142a /net
parentc90142a518d3744c84beb51cab0cda8956bb82a4 (diff)
downloadlinux-08a5bdde3812993cb8eb7aa9124703df0de28e4b.tar.bz2
mac80211: consider QoS Null frames for STA_NULLFUNC_ACKED
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> Link: https://lore.kernel.org/r/20191119053538.25979-4-thomas@adapt-ip.com Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'net')
-rw-r--r--net/mac80211/status.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/net/mac80211/status.c b/net/mac80211/status.c
index 0e51def35b8a..7b39ed86a8ad 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)) {