ath9k: add support for Tx and Rx STBC

Supported only for single stream rates by the hardware

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/drivers/net/wireless/ath/ath9k/xmit.c b/drivers/net/wireless/ath/ath9k/xmit.c
index 2237658144e6..b0d345a675fe 100644
--- a/drivers/net/wireless/ath/ath9k/xmit.c
+++ b/drivers/net/wireless/ath/ath9k/xmit.c
@@ -1607,6 +1607,8 @@ static void ath_buf_set_rate(struct ath_softc *sc, struct ath_buf *bf)
                         series[i].Rate = rix | 0x80;
                         series[i].PktDuration = ath_pkt_duration(sc, rix, bf,
                                  is_40, is_sgi, is_sp);
+                        if (rix < 8 && (tx_info->flags & IEEE80211_TX_CTL_STBC))
+                                series[i].RateFlags |= ATH9K_RATESERIES_STBC;
                         continue;
                 }