Messages in this thread Patch in this message | | | Date | Mon, 01 Aug 2011 16:18:53 -0700 | From | Greg KH <> | Subject | [38/70] ath9k: Fix tx throughput drops for AR9003 chips with AES encryption |
| |
2.6.39-stable review patch. If anyone has any objections, please let us know.
------------------
From: Rajkumar Manoharan <rmanohar@qca.qualcomm.com>
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 <rmanohar@qca.qualcomm.com> Signed-off-by: John W. Linville <linville@tuxdriver.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
--- 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; /*
| |