From fb47ada8dc3c30c8e7b415da155742b49536c61e Mon Sep 17 00:00:00 2001 From: Stanislaw Gruszka Date: Wed, 15 Feb 2017 10:25:12 +0100 Subject: [PATCH 16/19] rt2800: use TXOP_BACKOFF for probe frames Even if we do not set AMPDU bit in TXWI, device still can aggregate frame and send it with rate not corresponding to requested. That mean we can do not sent probe frames with requested rate. To prevent that use TXOP_BACKOFF for probe frames. Signed-off-by: Stanislaw Gruszka Signed-off-by: Kalle Valo --- drivers/net/wireless/ralink/rt2x00/rt2x00queue.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) --- a/drivers/net/wireless/ralink/rt2x00/rt2x00queue.c +++ b/drivers/net/wireless/ralink/rt2x00/rt2x00queue.c @@ -372,15 +372,16 @@ static void rt2x00queue_create_tx_descri /* * Determine IFS values - * - Use TXOP_BACKOFF for management frames except beacons + * - Use TXOP_BACKOFF for probe and 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)) + if ((ieee80211_is_mgmt(hdr->frame_control) && + !ieee80211_is_beacon(hdr->frame_control)) || + (tx_info->flags & IEEE80211_TX_CTL_RATE_CTRL_PROBE)) txdesc->u.ht.txop = TXOP_BACKOFF; else if (!(tx_info->flags & IEEE80211_TX_CTL_FIRST_FRAGMENT)) txdesc->u.ht.txop = TXOP_SIFS;