redonkable
/
alistair23-linux
1
0
Fork 0
Code Releases Activity

ath10k: provide survey info as accumulated data 

[ Upstream commit 720e5c03e5 ]

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: fa7937e3d5 ("ath10k: update bss channel survey information")
Signed-off-by: Venkateswara Naralasetty <vnaralas@codeaurora.org>
Tested-by: Markus Theil <markus.theil@tu-ilmenau.de>
Tested-by: John Deere <24601deerej@gmail.com>
[sven@narfation.org: adjust commit message]
Signed-off-by: Sven Eckelmann <sven@narfation.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/1592232686-28712-1-git-send-email-kvalo@codeaurora.org
Signed-off-by: Sasha Levin <sashal@kernel.org>
5.4-rM2-2.2.x-imx-squashed
Venkateswara Naralasetty 2020-06-15 20:29:03 +03:00 committed by Greg Kroah-Hartman
parent 450d03435c
commit 0ae399b5da
1 changed files with 1 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/net/wireless/ath/ath10k/mac.c
View File

@ -7131,7 +7131,7 @@ ath10k_mac_update_bss_chan_survey(struct ath10k *ar,
struct ieee80211_channel *channel)
{
int ret;
enum wmi_bss_survey_req_type type = WMI_BSS_SURVEY_REQ_TYPE_READ_CLEAR;
enum wmi_bss_survey_req_type type = WMI_BSS_SURVEY_REQ_TYPE_READ;
lockdep_assert_held(&ar->conf_mutex);