diff options
| author | Emmanuel Grumbach <emmanuel.grumbach@intel.com> | 2017-06-08 14:00:49 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-06-24 07:11:13 +0200 |
| commit | 2ec5b68bf62ef47daf526967f0fd069caf581e31 (patch) | |
| tree | ef0c6b13a72ca322b0eb88df9f062125e5152cc6 /net | |
| parent | 63d34ea7042af3ffe25cb19094cb5e766e7b67ca (diff) | |
mac80211: don't look at the PM bit of BAR frames
commit 769dc04db3ed8484798aceb015b94deacc2ba557 upstream.
When a peer sends a BAR frame with PM bit clear, we should
not modify its PM state as madated by the spec in
802.11-20012 10.2.1.2.
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'net')
| -rw-r--r-- | net/mac80211/rx.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c index acaaf616da71..c0731650c170 100644 --- a/net/mac80211/rx.c +++ b/net/mac80211/rx.c @@ -1585,12 +1585,16 @@ ieee80211_rx_h_sta_process(struct ieee80211_rx_data *rx) */ if (!ieee80211_hw_check(&sta->local->hw, AP_LINK_PS) && !ieee80211_has_morefrags(hdr->frame_control) && + !ieee80211_is_back_req(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, + /* + * 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))) { |