From 89a4c16cbdc961f69a636685f6bedc18d3813d45 Mon Sep 17 00:00:00 2001 From: Dian-Syuan Yang Date: Wed, 31 Jul 2024 15:05:06 +0800 Subject: [PATCH] wifi: rtw89: correct VHT TX rate on 20MHz connection It may get wrong bitrate when connecting to AP set VHT 20MHz, and thus we fix it to follow Wi-Fi spec. Signed-off-by: Dian-Syuan Yang Signed-off-by: Ping-Ke Shih Link: https://patch.msgid.link/20240731070506.46100-6-pkshih@realtek.com --- drivers/net/wireless/realtek/rtw89/phy.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/drivers/net/wireless/realtek/rtw89/phy.c b/drivers/net/wireless/realtek/rtw89/phy.c index 118d09b3eadd..aa4fc9115995 100644 --- a/drivers/net/wireless/realtek/rtw89/phy.c +++ b/drivers/net/wireless/realtek/rtw89/phy.c @@ -341,8 +341,11 @@ static void rtw89_phy_ra_sta_update(struct rtw89_dev *rtwdev, mode |= RTW89_RA_MODE_VHT; csi_mode = RTW89_RA_RPT_MODE_VHT; - /* MCS9, MCS8, MCS7 */ - ra_mask |= get_mcs_ra_mask(mcs_map, 9, 1); + /* MCS9 (non-20MHz), MCS8, MCS7 */ + if (sta->deflink.bandwidth == IEEE80211_STA_RX_BW_20) + ra_mask |= get_mcs_ra_mask(mcs_map, 8, 1); + else + ra_mask |= get_mcs_ra_mask(mcs_map, 9, 1); high_rate_masks = rtw89_ra_mask_vht_rates; if (sta->deflink.vht_cap.cap & IEEE80211_VHT_CAP_RXSTBC_MASK) stbc_en = 1; -- 2.25.1