Kalle Valo <kvalo@xxxxxxxxxxxxxx> wrote:
> It is expected that the returned counters by .get_survey are monotonic
> increasing. But the data from ath10k gets reset to zero regularly. Channel
> active/busy time are then showing incorrect values (less than previous or
> sometimes zero) for the currently active channel during successive survey
> dump commands.
>
> example:
>
> $ iw dev wlan0 survey dump
> Survey data from wlan0
> frequency: 5180 MHz [in use]
> channel active time: 54995 ms
> channel busy time: 432 ms
> channel receive time: 0 ms
> channel transmit time: 59 ms
> ...
>
> $ iw dev wlan0 survey dump
> Survey data from wlan0
> frequency: 5180 MHz [in use]
> channel active time: 32592 ms
> channel busy time: 254 ms
> channel receive time: 0 ms
> channel transmit time: 0 ms
> ...
>
> The correct way to handle this is to use the non-clearing
> WMI_BSS_SURVEY_REQ_TYPE_READ wmi_bss_survey_req_type. The firmware will
> then accumulate the survey data and handle wrap arounds.
>
> Tested-on: QCA9984 hw1.0 10.4-3.5.3-00057
> Tested-on: QCA988X hw2.0 10.2.4-1.0-00047
> Tested-on: QCA9888 hw2.0 10.4-3.9.0.2-00024
> Tested-on: QCA4019 hw1.0 10.4-3.6-00140
>
> Fixes: fa7937e3d5c2 ("ath10k: update bss channel survey information")
> Signed-off-by: Venkateswara Naralasetty <vnaralas@xxxxxxxxxxxxxx>
> Tested-by: Markus Theil <markus.theil@xxxxxxxxxxxxx>
> Tested-by: John Deere <24601deerej@xxxxxxxxx>
> [sven@xxxxxxxxxxxxx: adjust commit message]
> Signed-off-by: Sven Eckelmann <sven@xxxxxxxxxxxxx>
> Signed-off-by: Kalle Valo <kvalo@xxxxxxxxxxxxxx>
Patch applied to ath-next branch of ath.git, thanks.
720e5c03e5cb ath10k: provide survey info as accumulated data
--
https://patchwork.kernel.org/patch/11605281/
https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches
