DHCP broken when using A-band only

DHCP broken when using A-band only

[Marcel Holtmann]

Hi Johannes,

so I am running the latest wireless-testing.git tree based on 2.6.30-rc6
and when connecting to my A-band only configured AP, I don't get any
packets through. Even DHCP fails. The only thing I see in dmesg is

[ 3221.246392] wlan0: dropped frame to 00:1f:f3:xx:xx:xx (unauthorized port)

The wireless-testing.git tree based on 2.6.30-rc5 was working fine with
that access point. I was actually happily using the A-band since it is
less busy here. Any ideas why this might broke?

Regards

Marcel

Re: DHCP broken when using A-band only

[Johannes Berg]

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On Mon, 2009-05-18 at 19:50 -0700, Marcel Holtmann wrote:
> Hi Johannes,

Heh. Hi Marcel :)

> so I am running the latest wireless-testing.git tree based on 2.6.30-rc6
> and when connecting to my A-band only configured AP, I don't get any
> packets through. Even DHCP fails. The only thing I see in dmesg is
> 
> [ 3221.246392] wlan0: dropped frame to 00:1f:f3:xx:xx:xx (unauthorized port)
> 
> The wireless-testing.git tree based on 2.6.30-rc5 was working fine with
> that access point. I was actually happily using the A-band since it is
> less busy here. Any ideas why this might broke?

Not at all, sorry. Were there any driver changes? There shouldn't be
many changes at all maybe you could bisect?

johannes

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Re: DHCP broken when using A-band only

[John W. Linville]

On Tue, May 19, 2009 at 10:16:23AM +0200, Johannes Berg wrote:
> On Mon, 2009-05-18 at 19:50 -0700, Marcel Holtmann wrote:
> > Hi Johannes,
> 
> Heh. Hi Marcel :)
> 
> > so I am running the latest wireless-testing.git tree based on 2.6.30-rc6
> > and when connecting to my A-band only configured AP, I don't get any
> > packets through. Even DHCP fails. The only thing I see in dmesg is
> > 
> > [ 3221.246392] wlan0: dropped frame to 00:1f:f3:xx:xx:xx (unauthorized port)
> > 
> > The wireless-testing.git tree based on 2.6.30-rc5 was working fine with
> > that access point. I was actually happily using the A-band since it is
> > less busy here. Any ideas why this might broke?
> 
> Not at all, sorry. Were there any driver changes? There shouldn't be
> many changes at all maybe you could bisect?

Use merge-2009-05-18 and master-2009-05-18 (or later) as your endpoints
for bisection.

John
-- 
John W. Linville		Someday the world will need a hero, and you
linville@tuxdriver.com			might be all we have.  Be ready.

Re: DHCP broken when using A-band only

[Marcel Holtmann]

Hi Johannes,

> > so I am running the latest wireless-testing.git tree based on 2.6.30-rc6
> > and when connecting to my A-band only configured AP, I don't get any
> > packets through. Even DHCP fails. The only thing I see in dmesg is
> > 
> > [ 3221.246392] wlan0: dropped frame to 00:1f:f3:xx:xx:xx (unauthorized port)
> > 
> > The wireless-testing.git tree based on 2.6.30-rc5 was working fine with
> > that access point. I was actually happily using the A-band since it is
> > less busy here. Any ideas why this might broke?
> 
> Not at all, sorry. Were there any driver changes? There shouldn't be
> many changes at all maybe you could bisect?

I will make sure I can bisect this as quickly as possible.

One other thing is that I disabled every feature in my DIR-615 access
point. So no 802.11d, no protection no WMM, no nothing and switched back
to 802.11g instead of 802.11n.

And after starting a download for 600 MB image, it stopped half-way
through and my connection broke down. The AP kept working for any other
device that was connected to it. So this issue is way strange.

Regards

Marcel

Re: DHCP broken when using A-band only

[Marcel Holtmann]

Hi Johannes,

> > so I am running the latest wireless-testing.git tree based on 2.6.30-rc6
> > and when connecting to my A-band only configured AP, I don't get any
> > packets through. Even DHCP fails. The only thing I see in dmesg is
> > 
> > [ 3221.246392] wlan0: dropped frame to 00:1f:f3:xx:xx:xx (unauthorized port)
> > 
> > The wireless-testing.git tree based on 2.6.30-rc5 was working fine with
> > that access point. I was actually happily using the A-band since it is
> > less busy here. Any ideas why this might broke?
> 
> Not at all, sorry. Were there any driver changes? There shouldn't be
> many changes at all maybe you could bisect?

so I started to bisect this issue, but just accidentally booted into an
updated wireless-testing.git with the new 5350 ucode and my A-band only
access point does work again.

This either was a iwlwifi driver issue or maybe one of the regdomain
race conditions patches fixed it. Which could actually explain it.

Regards

Marcel