Patch "mac80211: update sta->last_rx on acked tx frames" has been added to the 3.4-stable tree

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This is a note to let you know that I've just added the patch titled

    mac80211: update sta->last_rx on acked tx frames

to the 3.4-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     mac80211-update-sta-last_rx-on-acked-tx-frames.patch
and it can be found in the queue-3.4 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.


>From 0c5b93290b2f3c7a376567c03ae8d385b0e99851 Mon Sep 17 00:00:00 2001
From: Felix Fietkau <nbd@xxxxxxxxxxx>
Date: Sun, 29 Sep 2013 21:39:34 +0200
Subject: mac80211: update sta->last_rx on acked tx frames

From: Felix Fietkau <nbd@xxxxxxxxxxx>

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
updated.

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
IEEE80211_HW_REPORTS_TX_ACK_STATUS is set.

Signed-off-by: Felix Fietkau <nbd@xxxxxxxxxxx>
Signed-off-by: Johannes Berg <johannes.berg@xxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

---
 net/mac80211/status.c |    3 +++
 1 file changed, 3 insertions(+)

--- a/net/mac80211/status.c
+++ b/net/mac80211/status.c
@@ -183,6 +183,9 @@ static void ieee80211_frame_acked(struct
 	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);


Patches currently in stable-queue which might be from nbd@xxxxxxxxxxx are

queue-3.4/mac80211-update-sta-last_rx-on-acked-tx-frames.patch
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