This is a note to let you know that I've just added the patch titled
ath9k: Fix tx throughput drops for AR9003 chips with AES encryption
to the 2.6.39-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:
ath9k-fix-tx-throughput-drops-for-ar9003-chips-with-aes.patch
and it can be found in the queue-2.6.39 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <[email protected]> know about it.
>From 4f6760b01bda625e9555e16d8e9ba8126a9c9498 Mon Sep 17 00:00:00 2001
From: Rajkumar Manoharan <[email protected]>
Date: Fri, 1 Jul 2011 18:37:33 +0530
Subject: ath9k: Fix tx throughput drops for AR9003 chips with AES encryption
From: Rajkumar Manoharan <[email protected]>
commit 4f6760b01bda625e9555e16d8e9ba8126a9c9498 upstream.
While sending aggregated frames in AES, the AR5416 chips
required additional padding b/w subframes. This workaround
is not needed for edma (AR9003 family) chips. With this patch
~4Mbps thoughput improvement was observed in clear environment.
Signed-off-by: Rajkumar Manoharan <[email protected]>
Signed-off-by: John W. Linville <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
drivers/net/wireless/ath/ath9k/xmit.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
--- a/drivers/net/wireless/ath/ath9k/xmit.c
+++ b/drivers/net/wireless/ath/ath9k/xmit.c
@@ -662,7 +662,8 @@ static int ath_compute_num_delims(struct
* TODO - this could be improved to be dependent on the rate.
* The hardware can keep up at lower rates, but not higher rates
*/
- if (fi->keyix != ATH9K_TXKEYIX_INVALID)
+ if ((fi->keyix != ATH9K_TXKEYIX_INVALID) &&
+ !(sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_EDMA))
ndelim += ATH_AGGR_ENCRYPTDELIM;
/*
Patches currently in stable-queue which might be from [email protected]
are
queue-2.6.39/ath9k-fix-tx-throughput-drops-for-ar9003-chips-with-aes.patch
_______________________________________________
stable mailing list
[email protected]
http://linux.kernel.org/mailman/listinfo/stable
