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Re: iwlwifi: Reason 7 periodic disconnect

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On Thu, Oct 23, 2014 at 8:38 PM, Laurențiu Nicola <lnicola@xxxxxxx> wrote:
> Okay. I'm running 3.17.1, so the line numbers might not be the ones
> you're expecting:
>
> patching file net/mac80211/mlme.c
> Hunk #1 succeeded at 128 (offset -1 lines).
> Hunk #2 succeeded at 137 (offset -1 lines).
> Hunk #3 succeeded at 1875 (offset -209 lines).
> Hunk #4 succeeded at 1886 (offset -207 lines).
> Hunk #5 succeeded at 1908 (offset -207 lines).
> Hunk #6 succeeded at 1924 (offset -244 lines).
>
> dmesg output is at https://bpaste.net/show/649277aaada8 .

can you please test the patch attached?

(remove the previous one first please)

>
> Laurentiu
>
> On Thu, Oct 23, 2014, at 19:46, Emmanuel Grumbach wrote:
>> On Thu, Oct 23, 2014 at 7:02 PM, Laurențiu Nicola <lnicola@xxxxxxx>
>> wrote:
>> > Sorry, but I only saw a two-line change [1] to
>> > `ieee80211_rx_mgmt_beacon` (which already had a log message). Am I
>> > missing something?
>> >
>> > [1] http://www.spinics.net/lists/linux-wireless/msg128340.html
>> >
>>
>> No - you are not. I did miss something...I forgot to attach the patch.
>> Here you go.
>>
>> > Laurentiu
>> >
>> > On Thu, Oct 23, 2014, at 11:07, Emmanuel Grumbach wrote:
>> >> On Thu, Oct 23, 2014 at 10:30 AM, Laurențiu Nicola <lnicola@xxxxxxx>
>> >> wrote:
>> >> > I did; the card still gets disconnected and the message doesn't show up
>> >> > in dmesg.
>> >> >
>> >>
>> >> You had *none* of the many prints I added in the log?
>> >>
>> >> That seems really weird...
>> >>
>> >> > Laurentiu
>> >> >
>> >> > On Thu, Oct 23, 2014, at 08:21, Emmanuel Grumbach wrote:
>> >> >> On Thu, Oct 23, 2014 at 12:53 AM, Laurențiu Nicola <lnicola@xxxxxxx>
>> >> >> wrote:
>> >> >> > Nope. It seems that code doesn't get executed when my issue occurs (or
>> >> >> > in my five or ten minutes of uptime). I've seen
>> >> >> > `ieee80211_reset_ap_probe` get called by `ieee80211_rx_mgmt_probe_resp`,
>> >> >> > but (if I'm not wrong) not on every disconnect.
>> >> >> >
>> >> >> > And as far as I can tell, force_cam is set to true.
>> >> >>
>> >> >> Can you please try with the patch attached and send the logs?
>> >> >> I again need MAC80211_MLME_DEBUG.
>> >> >>
>> >> >> Thanks.
>> >> >>
>> >> >> >
>> >> >> > Laurentiu
>> >> >> >
>> >> >> > On Wed, Oct 22, 2014, at 12:10, Emmanuel Grumbach wrote:
>> >> >> >> On Tue, Oct 21, 2014 at 10:56 PM, Laurențiu Nicola <lnicola@xxxxxxx>
>> >> >> >> wrote:
>> >> >> >> > Yep! `scb_timeout` is 60 on my router.
>> >> >> >> >
>> >> >> >> > On Tue, Oct 21, 2014, at 14:00, poma wrote:
>> >> >> >> >> On 21.10.2014 10:35, Felix Fietkau wrote:
>> >> >> >> >> > On 2014-10-21 10:23, Laurențiu Nicola wrote:
>> >> >> >> >> >> It's an ASUS RT-N66U running NEWD-2/K3X from r24160.
>> >> >> >> >> > This is a Broadcom based device, so it should behave in the same way as
>> >> >> >> >> > other APs/Routers running the Broadcom drivers.
>> >> >> >> >> > The driver should only send Reason 7 when receiving a PS-Poll, BlockAck,
>> >> >> >> >> > BlockAckReq or Action frame from a station that's not associated, so
>> >> >> >> >> > probably it has already kicked out your iwlwifi client earlier. Not sure
>> >> >> >> >> > why that doesn't show up in the log though.
>> >> >> >> >> >
>> >> >> >> >>
>> >> >> >> >> Whether this might refer to the Station Control Block Timeout value
>> >> >> >> >>
>> >> >> >> >> http://www.dd-wrt.com/wiki/index.php/Wl#scb_timeout
>> >> >> >> >> ...
>> >> >> >> >> scb_timeout
>> >> >> >> >>
>> >> >> >> >> AP only: inactivity timeout value for authenticated stas
>> >> >> >> >>
>> >> >> >>
>> >> >> >> Actually, mac80211 should be probing the AP every 30 seconds but a
>> >> >> >> beacon might abort the probe...
>> >> >> >> Can you try something like this:
>> >> >> >>
>> >> >> >> diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c
>> >> >> >> index 75df184..c9db7cf 100644
>> >> >> >> --- a/net/mac80211/mlme.c
>> >> >> >> +++ b/net/mac80211/mlme.c
>> >> >> >> @@ -3295,7 +3295,8 @@ static void ieee80211_rx_mgmt_beacon(struct
>> >> >> >> ieee80211_sub_if_data *sdata,
>> >> >> >>         if (ifmgd->flags & IEEE80211_STA_CONNECTION_POLL) {
>> >> >> >>                 mlme_dbg_ratelimited(sdata,
>> >> >> >>                                      "cancelling AP probe due to a
>> >> >> >> received beacon\n");
>> >> >> >> -               ieee80211_reset_ap_probe(sdata);
>> >> >> >> +               pr_err("Not cancelling the probe to make sure the AP
>> >> >> >> hears us from time to time\n");
>> >> >> >> +               //ieee80211_reset_ap_probe(sdata);
>> >> >> >>         }
>> >> >> >>
>> >> >> >>         /*
>> >> >> >>
>> >> >> >>
>> >> >> >>
>> >> >> >> >>
>> >> >> >> >> poma
>> >> >> >> >>
>> >> >> >> >>
>> >> >> >> >> --
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>> >> >> >> >> in
>> >> >> >> >> the body of a message to majordomo@xxxxxxxxxxxxxxx
>> >> >> >> >> More majordomo info at  http://vger.kernel.org/majordomo-info.html
>> >> >> >> --
>> >> >> >> To unsubscribe from this list: send the line "unsubscribe linux-wireless"
>> >> >> >> in
>> >> >> >> the body of a message to majordomo@xxxxxxxxxxxxxxx
>> >> >> >> More majordomo info at  http://vger.kernel.org/majordomo-info.html
>> >> >> --
>> >> >> To unsubscribe from this list: send the line "unsubscribe linux-wireless"
>> >> >> in
>> >> >> the body of a message to majordomo@xxxxxxxxxxxxxxx
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>> >> --
>> >> To unsubscribe from this list: send the line "unsubscribe linux-wireless"
>> >> in
>> >> the body of a message to majordomo@xxxxxxxxxxxxxxx
>> >> More majordomo info at  http://vger.kernel.org/majordomo-info.html
>> Email had 1 attachment:
>> + PROBE.patch
>>   3k (application/octet-stream)

Attachment: a.patch
Description: Binary data


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