diff options
| author | Felix Fietkau <nbd@openwrt.org> | 2013-10-14 19:18:48 (GMT) |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-12-04 19:05:26 (GMT) |
| commit | 0d654144c25710e1f9b2827fd6b8f7c76a9b86c2 (patch) | |
| tree | f3dc2597b66b40e60f77ea8548d20df0cafd4ee3 | |
| parent | f9a7e9f57556cdbce8bf55379676083579f631da (diff) | |
| download | linux-fsl-qoriq-0d654144c25710e1f9b2827fd6b8f7c76a9b86c2.tar.xz | |
ath5k: fix regression in tx status processing
commit 7ede612fd615abcda0cc30e5bef2a70f4cf4f75c upstream.
The regression was introduced in the following commit:
0967e01e8e713ed2982fb4eba8ba13794e9a6e89
"ath5k: make use of the new rate control API"
ath5k_tx_frame_completed saves the intended per-rate retry counts before
they are cleared by ieee80211_tx_info_clear_status, however at this
point the information in info->status.rates is incomplete.
This causes significant throughput degradation and excessive packet loss
on links where high bit rates don't work properly.
Move the copy from bf->rates a few lines up to ensure that the saved
retry counts are updated, and that they are really cleared in
info->status.rates after the call to ieee80211_tx_info_clear_status.
Cc: Thomas Huehn <thomas@net.t-labs.tu-berlin.de>
Cc: Benjamin Vahl <bvahl@net.t-labs.tu-berlin.de>
Reported-by: Ben West <ben@gowasabi.net>
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Acked-by: Thomas Huehn <thomas@net.t-labs.tu-berlin.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/net/wireless/ath/ath5k/base.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/net/wireless/ath/ath5k/base.c b/drivers/net/wireless/ath/ath5k/base.c index 48161ed..69f58b0 100644 --- a/drivers/net/wireless/ath/ath5k/base.c +++ b/drivers/net/wireless/ath/ath5k/base.c @@ -1663,15 +1663,15 @@ ath5k_tx_frame_completed(struct ath5k_hw *ah, struct sk_buff *skb, ah->stats.tx_bytes_count += skb->len; info = IEEE80211_SKB_CB(skb); + size = min_t(int, sizeof(info->status.rates), sizeof(bf->rates)); + memcpy(info->status.rates, bf->rates, size); + tries[0] = info->status.rates[0].count; tries[1] = info->status.rates[1].count; tries[2] = info->status.rates[2].count; ieee80211_tx_info_clear_status(info); - size = min_t(int, sizeof(info->status.rates), sizeof(bf->rates)); - memcpy(info->status.rates, bf->rates, size); - for (i = 0; i < ts->ts_final_idx; i++) { struct ieee80211_tx_rate *r = &info->status.rates[i]; |