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-rw-r--r--net/mac80211/rx.c17
1 files changed, 5 insertions, 12 deletions
diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c
index 4daafb07602f..fd580614085b 100644
--- a/net/mac80211/rx.c
+++ b/net/mac80211/rx.c
@@ -1607,23 +1607,16 @@ ieee80211_rx_h_sta_process(struct ieee80211_rx_data *rx)
/*
* Change STA power saving mode only at the end of a frame
- * exchange sequence.
+ * exchange sequence, and only for a data or management
+ * frame as specified in IEEE 802.11-2016 11.2.3.2
*/
if (!ieee80211_hw_check(&sta->local->hw, AP_LINK_PS) &&
!ieee80211_has_morefrags(hdr->frame_control) &&
- !ieee80211_is_back_req(hdr->frame_control) &&
+ (ieee80211_is_mgmt(hdr->frame_control) ||
+ ieee80211_is_data(hdr->frame_control)) &&
!(status->rx_flags & IEEE80211_RX_DEFERRED_RELEASE) &&
(rx->sdata->vif.type == NL80211_IFTYPE_AP ||
- rx->sdata->vif.type == NL80211_IFTYPE_AP_VLAN) &&
- /*
- * PM bit is only checked in frames where it isn't reserved,
- * in AP mode it's reserved in non-bufferable management frames
- * (cf. IEEE 802.11-2012 8.2.4.1.7 Power Management field)
- * BAR frames should be ignored as specified in
- * IEEE 802.11-2012 10.2.1.2.
- */
- (!ieee80211_is_mgmt(hdr->frame_control) ||
- ieee80211_is_bufferable_mmpdu(hdr->frame_control))) {
+ rx->sdata->vif.type == NL80211_IFTYPE_AP_VLAN)) {
if (test_sta_flag(sta, WLAN_STA_PS_STA)) {
if (!ieee80211_has_pm(hdr->frame_control))
sta_ps_end(sta);