This is a note to let you know that I've just added the patch titled
carl9170: Fix memory accounting when sta is in power-save mode.
to the 3.2-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:
carl9170-fix-memory-accounting-when-sta-is-in-power-save-mode.patch
and it can be found in the queue-3.2 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <[email protected]> know about it.
>From 992d52529d7840236d3059b51c15d5eb9e81a869 Mon Sep 17 00:00:00 2001
From: Nicolas Cavallari <[email protected]>
Date: Thu, 23 Feb 2012 16:53:34 +0100
Subject: carl9170: Fix memory accounting when sta is in power-save mode.
From: Nicolas Cavallari <[email protected]>
commit 992d52529d7840236d3059b51c15d5eb9e81a869 upstream.
On Access Point mode, when transmitting a packet, if the destination
station is in powersave mode, we abort transmitting the packet to the
device queue, but we do not reclaim the allocated memory. Given enough
packets, we can go in a state where there is no packet on the device
queue, but we think the device has no memory left, so no packet gets
transmitted, connections breaks and the AP stops working.
This undo the allocation done in the TX path when the station is in
power-save mode.
Signed-off-by: Nicolas Cavallari <[email protected]>
Acked-by: Christian Lamparter <[email protected]>
Signed-off-by: John W. Linville <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
drivers/net/wireless/ath/carl9170/tx.c | 1 +
1 file changed, 1 insertion(+)
--- a/drivers/net/wireless/ath/carl9170/tx.c
+++ b/drivers/net/wireless/ath/carl9170/tx.c
@@ -1251,6 +1251,7 @@ static bool carl9170_tx_ps_drop(struct a
atomic_dec(&ar->tx_ampdu_upload);
tx_info->flags |= IEEE80211_TX_STAT_TX_FILTERED;
+ carl9170_release_dev_space(ar, skb);
carl9170_tx_status(ar, skb, false);
return true;
}
Patches currently in stable-queue which might be from [email protected]
are
queue-3.2/carl9170-fix-memory-accounting-when-sta-is-in-power-save-mode.patch
queue-3.2/carl9170-fix-frame-delivery-if-sta-is-in-powersave-mode.patch
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