| /branches/gl-inet/package/kernel/mac80211/patches/090-Revert-rt2800-use-TXOP_BACKOFF-for-probe-frames.patch |
|---|
| @@ -0,0 +1,43 @@ |
|---|
| 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 |
| |
