[PATCH 3.5 05/78] mac80211: update sta->last_rx on acked tx frames

Luis Henriques luis.henriques at canonical.com
Mon Nov 25 13:05:52 UTC 2013 -stable review patch.  If anyone has any objections, please let me know.


From: Felix Fietkau <nbd at openwrt.org>

commit 0c5b93290b2f3c7a376567c03ae8d385b0e99851 upstream.

When clients are idle for too long, hostapd sends nullfunc frames for
probing. When those are acked by the client, the idle time needs to be

To make this work (and to avoid unnecessary probing), update sta->last_rx
whenever an ACK was received for a tx packet. Only do this if the flag

Signed-off-by: Felix Fietkau <nbd at openwrt.org>
Signed-off-by: Johannes Berg <johannes.berg at intel.com>
Signed-off-by: Luis Henriques <luis.henriques at canonical.com>
 net/mac80211/status.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/net/mac80211/status.c b/net/mac80211/status.c
index f98b326..619badc 100644
--- a/net/mac80211/status.c
+++ b/net/mac80211/status.c
@@ -183,6 +183,9 @@ static void ieee80211_frame_acked(struct sta_info *sta, struct sk_buff *skb)
 	struct ieee80211_local *local = sta->local;
 	struct ieee80211_sub_if_data *sdata = sta->sdata;
+	if (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS)
+		sta->last_rx = jiffies;
 	if (ieee80211_is_data_qos(mgmt->frame_control)) {
 		struct ieee80211_hdr *hdr = (void *) skb->data;
 		u8 *qc = ieee80211_get_qos_ctl(hdr);

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