Re: [PATCH] brcmfmac: fix RSSI report in AP mode

[Arend van Spriel <arend.vanspriel@broadcom.com>]

On 11/22/2024 10:03 PM, Alex Shumsky wrote:
> After commit 9a1590934d9a ("brcmfmac: correctly report average RSSI in
> station info") it is required from firmware to provide rx_lastpkt_rssi.
> If this field is not provided brcmfmac doesn't report any RSSI at all.
> Unfortunately some firmwares doesn't provide it. One example is firmware
> for BCM43455 found in Raspbberry Pi.
> See https://github.com/raspberrypi/linux/issues/4574
> 
> Fix it by falling back to rssi field if rx_lastpkt_rssi is not provided
> (like it was before 9a1590934d9a).

Sounds like a reasonable approach. However, I would like to learn more 
about the issue. Maybe it is a per-vendor issue so I am interested what 
the sta_info version is that we get from firmware. It is printed in 
brcmf_cfg80211_get_station() with brcmf_dbg(). You can make it a 
bphy_err() call instead or enable TRACE level debug messages in the driver.

Also would be good to know the firmware version and kernel version of 
the BCM43455.

Regards,
Arend