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mac80211: ignore PSM bit of reordered frames

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This patch tackles one of the problems of my
reorder release timer patch from August.

<http://www.spinics.net/lists/linux-wireless/msg57214.html>
=>
What if the reorder release triggers and ap_sta_ps_end
(called by ieee80211_rx_h_sta_process) accidentally clears
the WLAN_STA_PS_STA flag, because 100ms ago - when the STA
was still active - frames were put into the reorder buffer.

Signed-off-by: Christian Lamparter <chunkeey@googlemail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Christian Lamparter
2010-12-27 23:21:26 +01:00
committed by John W. Linville
parent 5af3c1d195
commit 4cfda47b69
2 changed files with 6 additions and 0 deletions
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4
net/mac80211/rx.c
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@@ -537,6 +537,7 @@ static void ieee80211_release_reorder_frame(struct ieee80211_hw *hw,
struct sk_buff_head *frames)
{
struct sk_buff *skb = tid_agg_rx->reorder_buf[index];
struct ieee80211_rx_status *status;
lockdep_assert_held(&tid_agg_rx->reorder_lock);
@@ -546,6 +547,8 @@ static void ieee80211_release_reorder_frame(struct ieee80211_hw *hw,
/* release the frame from the reorder ring buffer */
tid_agg_rx->stored_mpdu_num--;
tid_agg_rx->reorder_buf[index] = NULL;
status = IEEE80211_SKB_RXCB(skb);
status->rx_flags |= IEEE80211_RX_DEFERRED_RELEASE;
__skb_queue_tail(frames, skb);
no_frame:
@@ -1189,6 +1192,7 @@ ieee80211_rx_h_sta_process(struct ieee80211_rx_data *rx)
* exchange sequence.
*/
if (!ieee80211_has_morefrags(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)) {
if (test_sta_flags(sta, WLAN_STA_PS_STA)) {