This is a note to let you know that I've just added the patch titled
wifi: rtl8xxxu: gen2: Enable 40 MHz channel width
to the 6.0-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
wifi-rtl8xxxu-gen2-enable-40-mhz-channel-width.patch
and it can be found in the queue-6.0 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit e872830a8c184cc567178ba2f08c63e9f74e91a4
Author: Bitterblue Smith <rtl8821cerfe2@xxxxxxxxx>
Date: Sun Sep 18 15:40:56 2022 +0300
wifi: rtl8xxxu: gen2: Enable 40 MHz channel width
[ Upstream commit a8b5aef2cca15b7fa533421d462e4e0a3429bd6f ]
The module parameter ht40_2g was supposed to enable 40 MHz operation,
but it didn't.
Tell the firmware about the channel width when updating the rate mask.
This makes it work with my gen 2 chip RTL8188FU.
I'm not sure if anything needs to be done for the gen 1 chips, if 40
MHz channel width already works or not. They update the rate mask with
a different structure which doesn't have a field for the channel width.
Also set the channel width correctly for sta_statistics.
Fixes: f653e69009c6 ("rtl8xxxu: Implement basic 8723b specific update_rate_mask() function")
Fixes: bd917b3d28c9 ("rtl8xxxu: fill up txrate info for gen1 chips")
Signed-off-by: Bitterblue Smith <rtl8821cerfe2@xxxxxxxxx>
Acked-by: Jes Sorensen <jes@xxxxxxxxxxxxxxxxxx>
Signed-off-by: Kalle Valo <kvalo@xxxxxxxxxx>
Link: https://lore.kernel.org/r/3a950997-7580-8a6b-97a0-e0a81a135456@xxxxxxxxx
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu.h b/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu.h
index 7ddce3c3f0c4..782b089a2e1b 100644
--- a/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu.h
+++ b/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu.h
@@ -1425,7 +1425,7 @@ struct rtl8xxxu_fileops {
void (*set_tx_power) (struct rtl8xxxu_priv *priv, int channel,
bool ht40);
void (*update_rate_mask) (struct rtl8xxxu_priv *priv,
- u32 ramask, u8 rateid, int sgi);
+ u32 ramask, u8 rateid, int sgi, int txbw_40mhz);
void (*report_connect) (struct rtl8xxxu_priv *priv,
u8 macid, bool connect);
void (*fill_txdesc) (struct ieee80211_hw *hw, struct ieee80211_hdr *hdr,
@@ -1511,9 +1511,9 @@ void rtl8xxxu_gen2_config_channel(struct ieee80211_hw *hw);
void rtl8xxxu_gen1_usb_quirks(struct rtl8xxxu_priv *priv);
void rtl8xxxu_gen2_usb_quirks(struct rtl8xxxu_priv *priv);
void rtl8xxxu_update_rate_mask(struct rtl8xxxu_priv *priv,
- u32 ramask, u8 rateid, int sgi);
+ u32 ramask, u8 rateid, int sgi, int txbw_40mhz);
void rtl8xxxu_gen2_update_rate_mask(struct rtl8xxxu_priv *priv,
- u32 ramask, u8 rateid, int sgi);
+ u32 ramask, u8 rateid, int sgi, int txbw_40mhz);
void rtl8xxxu_gen1_report_connect(struct rtl8xxxu_priv *priv,
u8 macid, bool connect);
void rtl8xxxu_gen2_report_connect(struct rtl8xxxu_priv *priv,
diff --git a/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_core.c b/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_core.c
index 41d46c54444f..d8f5b4bb1fa9 100644
--- a/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_core.c
+++ b/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_core.c
@@ -4320,7 +4320,7 @@ static void rtl8xxxu_sw_scan_complete(struct ieee80211_hw *hw,
}
void rtl8xxxu_update_rate_mask(struct rtl8xxxu_priv *priv,
- u32 ramask, u8 rateid, int sgi)
+ u32 ramask, u8 rateid, int sgi, int txbw_40mhz)
{
struct h2c_cmd h2c;
@@ -4340,10 +4340,15 @@ void rtl8xxxu_update_rate_mask(struct rtl8xxxu_priv *priv,
}
void rtl8xxxu_gen2_update_rate_mask(struct rtl8xxxu_priv *priv,
- u32 ramask, u8 rateid, int sgi)
+ u32 ramask, u8 rateid, int sgi, int txbw_40mhz)
{
struct h2c_cmd h2c;
- u8 bw = RTL8XXXU_CHANNEL_WIDTH_20;
+ u8 bw;
+
+ if (txbw_40mhz)
+ bw = RTL8XXXU_CHANNEL_WIDTH_40;
+ else
+ bw = RTL8XXXU_CHANNEL_WIDTH_20;
memset(&h2c, 0, sizeof(struct h2c_cmd));
@@ -4621,7 +4626,11 @@ rtl8xxxu_bss_info_changed(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
RATE_INFO_FLAGS_SHORT_GI;
}
- rarpt->txrate.bw |= RATE_INFO_BW_20;
+ if (rtl8xxxu_ht40_2g &&
+ (sta->deflink.ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40))
+ rarpt->txrate.bw = RATE_INFO_BW_40;
+ else
+ rarpt->txrate.bw = RATE_INFO_BW_20;
}
bit_rate = cfg80211_calculate_bitrate(&rarpt->txrate);
rarpt->bit_rate = bit_rate;
@@ -4630,7 +4639,7 @@ rtl8xxxu_bss_info_changed(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
priv->vif = vif;
priv->rssi_level = RTL8XXXU_RATR_STA_INIT;
- priv->fops->update_rate_mask(priv, ramask, 0, sgi);
+ priv->fops->update_rate_mask(priv, ramask, 0, sgi, rarpt->txrate.bw == RATE_INFO_BW_40);
rtl8xxxu_write8(priv, REG_BCN_MAX_ERR, 0xff);
@@ -6344,7 +6353,7 @@ static void rtl8xxxu_refresh_rate_mask(struct rtl8xxxu_priv *priv,
}
priv->rssi_level = rssi_level;
- priv->fops->update_rate_mask(priv, rate_bitmap, ratr_idx, sgi);
+ priv->fops->update_rate_mask(priv, rate_bitmap, ratr_idx, sgi, txbw_40mhz);
}
}
