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Re: iwlwifi: Reason 7 periodic disconnect

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Doesn't seem to help https://bpaste.net/show/68e1a6b33689.

Laurentiu

On Thu, Oct 23, 2014, at 22:28, Emmanuel Grumbach wrote:
> 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
> >> >> >> >> --
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> >> >> >> >> in
> >> >> >> >> the body of a message to majordomo@xxxxxxxxxxxxxxx
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> >> >> >> in
> >> >> >> the body of a message to majordomo@xxxxxxxxxxxxxxx
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> >> >> 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)
> Email had 1 attachment:
> + a.patch
>   3k (application/octet-stream)
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