On Fri, Nov 3, 2017 at 5:51 PM, Jouni Malinen <jouni@xxxxxxxxxxxxxxxx> wrote:
> On Fri, Nov 03, 2017 at 10:57:11AM +0800, Daniel Drake wrote:
>> Endless OS recently upgraded from Linux 4.11 to Linux 4.13, and we now
>> have a few reports of issues with ath9k wireless becoming unusable.
>>
>> In the logs we can see that it authenticates, associates and completes
>> the WPA 4 way handshake, before then being disconnected with:
>>
>> wlp2s0: CTRL-EVENT-DISCONNECTED bssid=74:26:ac:68:2f:c0 reason=4
>> locally_generated=1
>
> reason=4 is WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY. I'd expect the most
> likely source of this to be one of the mac80211 code paths in mlme.c
> where disconnection is triggered if the current AP become unreachable.
> Getting a debug log from mac80211 might help in figuring out what is
> causing this (there seem to be number of mlme_dbg() calls before most,
> but not necessarily all, places where
> WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY is used).
We got the log, it is coming from ieee80211_sta_work()
else if (ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS)) {
sdata_info(sdata,t
"Failed to send nullfunc to AP %pM after %dms,
disconnecting\n",
bssid, probe_wait_ms);
ieee80211_sta_connection_lost(sdata, bssid,
WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY, false);
I looked again at changes between 4.12 and 4.13 and still no idea how
4.13 causes this problem :(
Daniel
