mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-24 07:46:48 +00:00
6e4fb77f9e
several people reported this bug to be causing drop out issues
Signed-off-by: John Crispin <john@phrozen.org>
(cherry picked from commit cac1a4be66)
44 lines
1.6 KiB
Diff
44 lines
1.6 KiB
Diff
From 52a192362932f333a7ebafd581c4d9b81da2fec8 Mon Sep 17 00:00:00 2001
|
|
From: Stanislaw Gruszka <sgruszka@redhat.com>
|
|
Date: Mon, 28 May 2018 13:25:06 +0200
|
|
Subject: [PATCH] Revert "rt2800: use TXOP_BACKOFF for probe frames"
|
|
|
|
This reverts commit fb47ada8dc3c30c8e7b415da155742b49536c61e.
|
|
|
|
In some situations when we set TXOP_BACKOFF, the probe frame is
|
|
not sent at all. What it worse then sending probe frame as part
|
|
of AMPDU and can degrade 11n performance to 11g rates.
|
|
|
|
Cc: stable@vger.kernel.org
|
|
Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
|
|
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
|
|
---
|
|
drivers/net/wireless/ralink/rt2x00/rt2x00queue.c | 7 +++----
|
|
1 file changed, 3 insertions(+), 4 deletions(-)
|
|
|
|
--- a/drivers/net/wireless/ralink/rt2x00/rt2x00queue.c
|
|
+++ b/drivers/net/wireless/ralink/rt2x00/rt2x00queue.c
|
|
@@ -372,16 +372,15 @@ static void rt2x00queue_create_tx_descri
|
|
|
|
/*
|
|
* Determine IFS values
|
|
- * - Use TXOP_BACKOFF for probe and management frames except beacons
|
|
+ * - Use TXOP_BACKOFF for management frames except beacons
|
|
* - Use TXOP_SIFS for fragment bursts
|
|
* - Use TXOP_HTTXOP for everything else
|
|
*
|
|
* Note: rt2800 devices won't use CTS protection (if used)
|
|
* for frames not transmitted with TXOP_HTTXOP
|
|
*/
|
|
- if ((ieee80211_is_mgmt(hdr->frame_control) &&
|
|
- !ieee80211_is_beacon(hdr->frame_control)) ||
|
|
- (tx_info->flags & IEEE80211_TX_CTL_RATE_CTRL_PROBE))
|
|
+ if (ieee80211_is_mgmt(hdr->frame_control) &&
|
|
+ !ieee80211_is_beacon(hdr->frame_control))
|
|
txdesc->u.ht.txop = TXOP_BACKOFF;
|
|
else if (!(tx_info->flags & IEEE80211_TX_CTL_FIRST_FRAGMENT))
|
|
txdesc->u.ht.txop = TXOP_SIFS;
|
|
--
|
|
2.17.1
|
|
|