3.0.0-rc1: dmesg shows 'wlan%d' instead of 'wlan0'

3.0.0-rc1: dmesg shows 'wlan%d' instead of 'wlan0'

[Sergei Trofimovich]

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Recently I've noticed small discrepancy in dmesg:

$ { zcat messages.2.gz messages.1.gz; cat messages; } | egrep "(deauthen|Linux version)"
...
May 21 22:01:31 sf kernel: [    0.000000] Linux version 2.6.39-00004-g29c77fa (slyfox@sf) (gcc version 4.4.5 (Gentoo 4.4.5 p1.2, pie-0.4.5) ) #116 SMP PREEMPT Thu May 19 22:46:16 EEST 2011
May 24 05:37:54 sf kernel: [81845.885094] wlan0: deauthenticated from ...

Jun  1 22:38:38 sf kernel: [    0.000000] Linux version 3.0.0-rc1-00035-g79f3f61 (slyfox@sf) (gcc version 4.4.5 (Gentoo 4.4.5 p1.2, pie-0.4.5) ) #118 SMP PREEMPT Wed Jun 1 22:14:46 EEST 2011
Jun  1 23:41:23 sf kernel: [ 3877.773727] wlan%d: deauthenticating from ...

Jun  1 23:42:16 sf kernel: [    0.000000] Linux version 3.0.0-rc1-00035-g79f3f61-dirty (slyfox@sf) (gcc version 4.4.5 (Gentoo 4.4.5 p1.2, pie-0.4.5) ) #119 SMP PREEMPT Wed Jun 1 23:35:43 EEST 2011
Jun  2 07:35:10 sf kernel: [ 5972.879970] wlan%d: deauthenticated from ...

Here we see 'wlan0' -> 'wlan%d' switch. I presume those lines go from firmware
(and not from userspace).

The card is an iwl4965

10:00.0 Network controller: Intel Corporation PRO/Wireless 4965 AG or AGN [Kedron] Network Connection (rev 61)

-- 

  Sergei

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Re: 3.0.0-rc1: dmesg shows 'wlan%d' instead of 'wlan0'

[Mohammed Shafi]

On Sun, Jun 5, 2011 at 10:40 PM, Sergei Trofimovich <slyich@gmail.com> wrote:
> Recently I've noticed small discrepancy in dmesg:
>
> $ { zcat messages.2.gz messages.1.gz; cat messages; } | egrep "(deauthen|Linux version)"
> ...
> May 21 22:01:31 sf kernel: [    0.000000] Linux version 2.6.39-00004-g29c77fa (slyfox@sf) (gcc version 4.4.5 (Gentoo 4.4.5 p1.2, pie-0.4.5) ) #116 SMP PREEMPT Thu May 19 22:46:16 EEST 2011
> May 24 05:37:54 sf kernel: [81845.885094] wlan0: deauthenticated from ...
>
> Jun  1 22:38:38 sf kernel: [    0.000000] Linux version 3.0.0-rc1-00035-g79f3f61 (slyfox@sf) (gcc version 4.4.5 (Gentoo 4.4.5 p1.2, pie-0.4.5) ) #118 SMP PREEMPT Wed Jun 1 22:14:46 EEST 2011
> Jun  1 23:41:23 sf kernel: [ 3877.773727] wlan%d: deauthenticating from ...
>
> Jun  1 23:42:16 sf kernel: [    0.000000] Linux version 3.0.0-rc1-00035-g79f3f61-dirty (slyfox@sf) (gcc version 4.4.5 (Gentoo 4.4.5 p1.2, pie-0.4.5) ) #119 SMP PREEMPT Wed Jun 1 23:35:43 EEST 2011
> Jun  2 07:35:10 sf kernel: [ 5972.879970] wlan%d: deauthenticated from ...
>
> Here we see 'wlan0' -> 'wlan%d' switch. I presume those lines go from firmware
> (and not from userspace).
>
> The card is an iwl4965
>
> 10:00.0 Network controller: Intel Corporation PRO/Wireless 4965 AG or AGN [Kedron] Network Connection (rev 61)


this seems to be fixed by the following commit which was recently
merged in wireless-testing

commit 59e7e7078d6c2c6294caf454c6e3695f9d3e46a2
Author: Thadeu Lima de Souza Cascardo <cascardo@holoscopio.com>
Date:   Thu Jun 2 17:28:37 2011 -0300

    mac80211: call dev_alloc_name before copying name to sdata

    This partially reverts 1c5cae815d19ffe02bdfda1260949ef2b1806171, because
    the netdev name is copied into sdata->name, which is used for debugging
    messages, for example. Otherwise, we get messages like this:

    wlan%d: authenticated

    Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@holoscopio.com>
    Cc: Jiri Pirko <jpirko@redhat.com>
    Cc: David S. Miller <davem@davemloft.net>
    Cc: Johannes Berg <johannes@sipsolutions.net>
    Cc: "John W. Linville" <linville@tuxdriver.com>
    Signed-off-by: John W. Linville <linville@tuxdriver.com>


are we still getting it?

>
> --
>
>  Sergei
>



-- 
shafi

Re: 3.0.0-rc1: dmesg shows 'wlan%d' instead of 'wlan0'

[Sergei Trofimovich]

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> > Here we see 'wlan0' -> 'wlan%d' switch. I presume those lines go from firmware
> > (and not from userspace).

> this seems to be fixed by the following commit which was recently
> merged in wireless-testing
> 
> commit 59e7e7078d6c2c6294caf454c6e3695f9d3e46a2
> Author: Thadeu Lima de Souza Cascardo <cascardo@holoscopio.com>
> Date:   Thu Jun 2 17:28:37 2011 -0300

> are we still getting it?

I never ran 'wireless-testing' before.

Applied this commit on top of 3.0-rc2 and wlan%d switched to wlan0 back.

Thanks!

-- 

  Sergei

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Re: 3.0.0-rc1: dmesg shows 'wlan%d' instead of 'wlan0'

[julie Sullivan]

>
> Applied this commit on top of 3.0-rc2 and wlan%d switched to wlan0 back.
>
> Thanks!
>
> --
>
>  Sergei
>

Yes, with me too:


before patch application (3.0-rc2):

[   63.837522] wlan%d: authenticate with 00:18:f6:aa:6e:25 (try 1)
[   63.843805] wlan%d: authenticated
[   63.844282] wlan%d: associate with 00:18:f6:aa:6e:25 (try 1)
[   63.846887] wlan%d: RX AssocResp from 00:18:f6:aa:6e:25
(capab=0x411 status=0 aid=2)
[   63.846891] wlan%d: associated

after patch application:

[   69.472955] wlan0: authenticate with 00:18:f6:aa:6e:25 (try 1)
[   69.479356] wlan0: authenticated
[   69.479863] wlan0: associate with 00:18:f6:aa:6e:25 (try 1)
[   69.482425] wlan0: RX AssocResp from 00:18:f6:aa:6e:25 (capab=0x411
status=0 aid=2)
[   69.482428] wlan0: associated


Thanks for the pointer, Shafi.

Cheers
Julie