@@ -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 >= offsetof(typeof(*c2h), ra_report.bw) +
+ sizeof(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;
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@gmail.com> --- v3: - Don't assume bw will always be 1 byte. v2: - Eliminate the magic numbers. --- drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_core.c | 11 ++++++++--- 1 file changed, 8 insertions(+), 3 deletions(-)