The gen 2 chips RTL8192EU and RTL8188FU periodically send the driver
reports about the TX rate, and the driver passes these reports to
sta_statistics. The reports from RTL8192EU may or may not include the
channel width. The reports from RTL8188FU do not include it.
Only access the c2h->ra_report.bw field if the report (skb) is big
enough.
The other problem fixed here is that the code was actually never
changing the channel width initially reported by
rtl8xxxu_bss_info_changed because the value of RATE_INFO_BW_20 is 0.
Fixes: 0985d3a410ac ("rtl8xxxu: Feed current txrate information for mac80211")
Signed-off-by: Bitterblue Smith <rtl8821cerfe2@xxxxxxxxx>
---
v2:
- Eliminate the magic numbers.
---
drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu.h | 2 ++
drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_core.c | 11 ++++++++---
2 files changed, 10 insertions(+), 3 deletions(-)
diff --git a/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu.h b/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu.h
index d26df4095da0..9be53e0f25cc 100644
--- a/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu.h
+++ b/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu.h
@@ -1187,6 +1187,8 @@ enum rtl8xxxu_bw_mode {
RTL8XXXU_CHANNEL_WIDTH_MAX = 5,
};
+#define RTL8XXXU_C2H_HDR_LEN 2 /* id and seq */
+
struct rtl8723bu_c2h {
u8 id;
u8 seq;
diff --git a/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_core.c b/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_core.c
index 28f136064297..352779fe4b78 100644
--- a/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_core.c
+++ b/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_core.c
@@ -5569,7 +5569,6 @@ static void rtl8xxxu_c2hcmd_callback(struct work_struct *work)
rarpt->txrate.flags = 0;
rate = c2h->ra_report.rate;
sgi = c2h->ra_report.sgi;
- bw = c2h->ra_report.bw;
if (rate < DESC_RATE_MCS0) {
rarpt->txrate.legacy =
@@ -5586,8 +5585,14 @@ static void rtl8xxxu_c2hcmd_callback(struct work_struct *work)
RATE_INFO_FLAGS_SHORT_GI;
}
- if (bw == RATE_INFO_BW_20)
- rarpt->txrate.bw |= RATE_INFO_BW_20;
+ if (skb->len > RTL8XXXU_C2H_HDR_LEN +
+ offsetof(typeof(c2h->ra_report), bw)) {
+ if (c2h->ra_report.bw == RTL8XXXU_CHANNEL_WIDTH_40)
+ bw = RATE_INFO_BW_40;
+ else
+ bw = RATE_INFO_BW_20;
+ rarpt->txrate.bw = bw;
+ }
}
bit_rate = cfg80211_calculate_bitrate(&rarpt->txrate);
rarpt->bit_rate = bit_rate;
--
2.38.0
