On Mon, 2024-07-22 at 13:50 +0300, Bitterblue Smith wrote:
> "iw dev wlp2s0 station dump" shows incorrect rx bitrate:
>
> tx bitrate: 866.7 MBit/s VHT-MCS 9 80MHz short GI VHT-NSS 2
> rx bitrate: 86.7 MBit/s VHT-MCS 9 VHT-NSS 1
>
> This is because the RX band width is calculated incorrectly. Fix the
> calculation according to the phydm_rxsc_2_bw() function from the
> official drivers.
>
> After:
>
> tx bitrate: 866.7 MBit/s VHT-MCS 9 80MHz short GI VHT-NSS 2
> rx bitrate: 390.0 MBit/s VHT-MCS 9 80MHz VHT-NSS 1
>
> It also works correctly with the AP configured for 20 MHz and 40 MHz.
>
> Tested with RTL8822CE.
>
> Fixes: e3037485c68e ("rtw88: new Realtek 802.11ac driver")
> Signed-off-by: Bitterblue Smith <rtl8821cerfe2@xxxxxxxxx>
> ---
> v2:
> - Use Fixes instead of Cc: stable.
>
For the record, if you want it backported, you really should have
_both_. Having the Fixes: is good, but will not necessarily lead to it
being backported when/where you want it.
johannes
