spamm of cfg80211: Calling CRDA to update world regulatory domain

spamm of cfg80211: Calling CRDA to update world regulatory domain

[Justin P. Mattock]

is there a way to get rid of this annoying spamming of the regulatory?


[  338.519037] cfg80211: Calling CRDA to update world regulatory domain
[  338.523266] cfg80211: World regulatory domain updated:
[  338.523269] cfg80211:     (start_freq - end_freq @ bandwidth), 
(max_antenna_gain, max_eirp)
[  338.523272] cfg80211:     (2402000 KHz - 2472000 KHz @ 40000 KHz), 
(300 mBi, 2000 mBm)
[  338.523276] cfg80211:     (2457000 KHz - 2482000 KHz @ 20000 KHz), 
(300 mBi, 2000 mBm)
[  338.523279] cfg80211:     (2474000 KHz - 2494000 KHz @ 20000 KHz), 
(300 mBi, 2000 mBm)
[  338.523281] cfg80211:     (5170000 KHz - 5250000 KHz @ 40000 KHz), 
(300 mBi, 2000 mBm)
[  338.523284] cfg80211:     (5735000 KHz - 5835000 KHz @ 40000 KHz), 
(300 mBi, 2000 mBm)
[  340.948738] wlan1: authenticate with 00:1d:a2:d8:7e:70 (try 1)
[  340.950479] wlan1: authenticated
[  340.950707] wlan1: associate with 00:1d:a2:d8:7e:70 (try 1)
[  340.953611] wlan1: RX ReassocResp from 00:1d:a2:d8:7e:70 (capab=0x401 
status=0 aid=79)
[  340.953614] wlan1: associated
[  458.646604] wlan1: deauthenticated from 00:1d:a2:d8:7e:70 (Reason: 2)


my entire syslog is filled with the above.

Note: I am not on the list so Cc me!

Justin P. Mattock

Re: spamm of cfg80211: Calling CRDA to update world regulatory domain

[Thomas Backlund]

Justin P. Mattock skrev 1.11.2011 17:18:
> is there a way to get rid of this annoying spamming of the regulatory?
>
>
> [ 338.519037] cfg80211: Calling CRDA to update world regulatory domain
> [ 338.523266] cfg80211: World regulatory domain updated:
> [ 338.523269] cfg80211: (start_freq - end_freq @ bandwidth),
> (max_antenna_gain, max_eirp)
> [ 338.523272] cfg80211: (2402000 KHz - 2472000 KHz @ 40000 KHz), (300
> mBi, 2000 mBm)
> [ 338.523276] cfg80211: (2457000 KHz - 2482000 KHz @ 20000 KHz), (300
> mBi, 2000 mBm)
> [ 338.523279] cfg80211: (2474000 KHz - 2494000 KHz @ 20000 KHz), (300
> mBi, 2000 mBm)
> [ 338.523281] cfg80211: (5170000 KHz - 5250000 KHz @ 40000 KHz), (300
> mBi, 2000 mBm)
> [ 338.523284] cfg80211: (5735000 KHz - 5835000 KHz @ 40000 KHz), (300
> mBi, 2000 mBm)
> [ 340.948738] wlan1: authenticate with 00:1d:a2:d8:7e:70 (try 1)
> [ 340.950479] wlan1: authenticated
> [ 340.950707] wlan1: associate with 00:1d:a2:d8:7e:70 (try 1)
> [ 340.953611] wlan1: RX ReassocResp from 00:1d:a2:d8:7e:70 (capab=0x401
> status=0 aid=79)
> [ 340.953614] wlan1: associated
> [ 458.646604] wlan1: deauthenticated from 00:1d:a2:d8:7e:70 (Reason: 2)
>
>
> my entire syslog is filled with the above.
>


Are you using networkmanager or systemd or even both ?
Atleast at some point networkmanager have had problems when trying to
activate wireless faster than the hw like, so you get into
auth/deauth loop, and for every time interface restart gets detected,
setting crda gets triggered.

For me systemd also has had the same problems for me from time to time,
and the only way to get wireless up then is to disable it for a
~5+ seconds with the hw killswitch, and when I re-enable it, network 
comes up as intended.

This happends for me with atleast 3.0 and 3.1 kernels and Intel 4965AGN 
wireless connecting to a 11N 5GHz AP.

--
Thomas

Re: spamm of cfg80211: Calling CRDA to update world regulatory domain

[Andreas Hartmann]

Hi,

Justin P. Mattock schrieb:
> is there a way to get rid of this annoying spamming of the regulatory?
> 
> 
> [  338.519037] cfg80211: Calling CRDA to update world regulatory domain
> [  338.523266] cfg80211: World regulatory domain updated:
> [  338.523269] cfg80211:     (start_freq - end_freq @ bandwidth),
> (max_antenna_gain, max_eirp)
> [  338.523272] cfg80211:     (2402000 KHz - 2472000 KHz @ 40000 KHz),
> (300 mBi, 2000 mBm)
> [  338.523276] cfg80211:     (2457000 KHz - 2482000 KHz @ 20000 KHz),
> (300 mBi, 2000 mBm)
> [  338.523279] cfg80211:     (2474000 KHz - 2494000 KHz @ 20000 KHz),
> (300 mBi, 2000 mBm)
> [  338.523281] cfg80211:     (5170000 KHz - 5250000 KHz @ 40000 KHz),
> (300 mBi, 2000 mBm)
> [  338.523284] cfg80211:     (5735000 KHz - 5835000 KHz @ 40000 KHz),
> (300 mBi, 2000 mBm)

I can see these messages with compat-wireless-2011-11-22, two. They are
sent out every 3 or 4 seconds. compat-wireless-2011-10-31 doesn't show
the problem.


Andreas

Re: spamm of cfg80211: Calling CRDA to update world regulatory domain

[Justin P. Mattock]

On 11/25/2011 06:48 AM, Andreas Hartmann wrote:
> Hi,
>
> Justin P. Mattock schrieb:
>> is there a way to get rid of this annoying spamming of the regulatory?
>>
>>
>> [  338.519037] cfg80211: Calling CRDA to update world regulatory domain
>> [  338.523266] cfg80211: World regulatory domain updated:
>> [  338.523269] cfg80211:     (start_freq - end_freq @ bandwidth),
>> (max_antenna_gain, max_eirp)
>> [  338.523272] cfg80211:     (2402000 KHz - 2472000 KHz @ 40000 KHz),
>> (300 mBi, 2000 mBm)
>> [  338.523276] cfg80211:     (2457000 KHz - 2482000 KHz @ 20000 KHz),
>> (300 mBi, 2000 mBm)
>> [  338.523279] cfg80211:     (2474000 KHz - 2494000 KHz @ 20000 KHz),
>> (300 mBi, 2000 mBm)
>> [  338.523281] cfg80211:     (5170000 KHz - 5250000 KHz @ 40000 KHz),
>> (300 mBi, 2000 mBm)
>> [  338.523284] cfg80211:     (5735000 KHz - 5835000 KHz @ 40000 KHz),
>> (300 mBi, 2000 mBm)
>
> I can see these messages with compat-wireless-2011-11-22, two. They are
> sent out every 3 or 4 seconds. compat-wireless-2011-10-31 doesn't show
> the problem.
>
>
> Andreas
>


yep! usually if I go to starbucks to do things this message shows 
up(think most public areas I get this a lot).
if I connect to a home router this does not spamm the syslog that 
much(still does, just not as easily).
attached is dmesg of syslog at starbucks, within 10mins I already have 
like 3/4 of this..

http://fpaste.org/xzaz/

looking through the kernel I see mixed areas in of which this is 
triggered..:



net/wireless/reg.c:381

static int call_crda(const char *alpha2)
{
     if (!is_world_regdom((char *) alpha2))
         pr_info("Calling CRDA for country: %c%c\n",
             alpha2[0], alpha2[1]);
     else
         pr_info("Calling CRDA to update world regulatory domain\n");

     /* query internal regulatory database (if it exists) */
     reg_regdb_query(alpha2);

     return kobject_uevent(&reg_pdev->dev.kobj, KOBJ_CHANGE);
}


net/mac80211/work.c:498:

static enum work_action __must_check
ieee80211_authenticate(struct ieee80211_work *wk)
{

<----- lots of code --------->

     printk(KERN_DEBUG "%s: authenticate with %pM (try %d)\n",
            sdata->name, wk->filter_ta, wk->probe_auth.tries);


now not sure how this mechanism works, but there are _two_ approaches 
for the regulatory domain:

1) have the kernel use something like alpha2 that automatically 
finds/search _query's_ for the country or something.
or
2) manually add your country to net/wireless/db.txt with the country 
causing alpha1 to be used, which I think causes the kernel to not query 
for CRDA.

NOTE: I only spent a little time reading up on this, and trying it out 
so I might have got this wrong. all of this is on
http://linuxwireless.org/en/developers/Regulatory

Justin P. Mattock