diff options
Diffstat (limited to 'package/kernel/mac80211/patches/090-Revert-rt2800-use-TXOP_BACKOFF-for-probe-frames.patch')
| -rw-r--r-- | package/kernel/mac80211/patches/090-Revert-rt2800-use-TXOP_BACKOFF-for-probe-frames.patch | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/package/kernel/mac80211/patches/090-Revert-rt2800-use-TXOP_BACKOFF-for-probe-frames.patch b/package/kernel/mac80211/patches/090-Revert-rt2800-use-TXOP_BACKOFF-for-probe-frames.patch new file mode 100644 index 0000000000..53d1c8a094 --- /dev/null +++ b/package/kernel/mac80211/patches/090-Revert-rt2800-use-TXOP_BACKOFF-for-probe-frames.patch @@ -0,0 +1,47 @@ +From patchwork Mon May 28 11:25:06 2018 +Content-Type: text/plain; charset="utf-8" +MIME-Version: 1.0 +Content-Transfer-Encoding: 7bit +Subject: Revert "rt2800: use TXOP_BACKOFF for probe frames" +From: Stanislaw Gruszka <sgruszka@redhat.com> +X-Patchwork-Id: 10431861 +Message-Id: <1527506706-6488-1-git-send-email-sgruszka@redhat.com> +To: linux-wireless@vger.kernel.org +Date: Mon, 28 May 2018 13:25:06 +0200 + +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> +--- + drivers/net/wireless/ralink/rt2x00/rt2x00queue.c | 7 +++---- + 1 file changed, 3 insertions(+), 4 deletions(-) + +diff --git a/drivers/net/wireless/ralink/rt2x00/rt2x00queue.c b/drivers/net/wireless/ralink/rt2x00/rt2x00queue.c +index a6884e73d2ab..7ddee980048b 100644 +--- 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_descriptor_ht(struct rt2x00_dev *rt2x00dev, + + /* + * 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; |