Internal airport card not working? (2.4.6-benh)

Internal airport card not working? (2.4.6-benh)

[Jeremy Radlow]

Under 2.4.6 on an iBook, I'm apparently having ARP problems with Airport...

When I try to ping other machines on the network, I can see the activity
lights on my base station and the target machines' ethernet ports, and the
other machines on my LAN see the airport card in their ARP cache, but the
laptop with the airport card doesn't get anything in its ARP cache.

When I snoop the traffic using tcpdump, all I see is a bunch of spurious ARP
who-has messages originating from the laptop, and is-at messages originating
from the target machines.


My setup:
    transparent bridging on base station
    static IP's for all devices on the network (192.168.1.*)
    laptop is 5 feet away from base station

-Jeremy


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Re: Internal airport card not working? (2.4.6-benh)

[Ethan Blanton]

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Jeremy Radlow spake unto us the following wisdom:
> Under 2.4.6 on an iBook, I'm apparently having ARP problems with Airport...
> 
> When I try to ping other machines on the network, I can see the activity
> lights on my base station and the target machines' ethernet ports, and the
> other machines on my LAN see the airport card in their ARP cache, but the
> laptop with the airport card doesn't get anything in its ARP cache.
> 
> When I snoop the traffic using tcpdump, all I see is a bunch of spurious ARP
> who-has messages originating from the laptop, and is-at messages originating
> from the target machines.

I'm running BenH's 2.4.6 from about a week ago, and I get similar
behavior...  *eventually* I find the destination and connect or
whatever, but it takes quite a few seconds.

Removing the driver stack (airport, orinoco, hermes) and reinserting
the modules fixes the problem for me...  Until I suspend and resume a
few times, at which point I'll have to remove/reinsert again.

I know that's not a *fix*, but it should get you working again in the
meantime.  :-)
Ethan

-- 
If I've told you once, I've told you once
And once is all that you needed.
		-- The Refreshments, "Carefree"

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Re: Internal airport card not working? (2.4.6-benh)

[Benjamin Herrenschmidt]

>I'm running BenH's 2.4.6 from about a week ago, and I get similar
>behavior...  *eventually* I find the destination and connect or
>whatever, but it takes quite a few seconds.
>
>Removing the driver stack (airport, orinoco, hermes) and reinserting
>the modules fixes the problem for me...  Until I suspend and resume a
>few times, at which point I'll have to remove/reinsert again.
>
>I know that's not a *fix*, but it should get you working again in the
>meantime.  :-)
>Ethan

Interesting. Do you see any error message in the dmesh log ?

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Re: Internal airport card not working? (2.4.6-benh)

[Ethan Blanton]

Benjamin Herrenschmidt spake unto us the following wisdom:
> >Removing the driver stack (airport, orinoco, hermes) and reinserting
> >the modules fixes the problem for me...  Until I suspend and resume a
> >few times, at which point I'll have to remove/reinsert again.
> >
> >I know that's not a *fix*, but it should get you working again in the
> >meantime.  :-)
> >Ethan
>
> Interesting. Do you see any error message in the dmesh log ?

Not that I see...  I see nothing in my log until the removal and
reinsertion of the drivers, at which point I just see a 'su' and then
the driver banner messages.

Everything *acts* like it's working, it just doesn't.  If that makes
sense.  :-)
Ethan

--
If I've told you once, I've told you once
And once is all that you needed.
		-- The Refreshments, "Carefree"

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Re: Internal airport card not working? (2.4.6-benh)

[Benjamin Herrenschmidt]

>Not that I see...  I see nothing in my log until the removal and
>reinsertion of the drivers, at which point I just see a 'su' and then
>the driver banner messages.
>
>Everything *acts* like it's working, it just doesn't.  If that makes
>sense.  :-)
>Ethan

Not much for now, I suspect a problem with the card's power up sequence
which may not wait long enough for the card to be up...

Do you see anything wrong with packets emitted by the card ?

Ben.


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Re: Internal airport card not working? (2.4.6-benh)

[Ethan Blanton]

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Benjamin Herrenschmidt spake unto us the following wisdom:
> >Everything *acts* like it's working, it just doesn't.  If that makes
> >sense.  :-)
> 
> Not much for now, I suspect a problem with the card's power up sequence
> which may not wait long enough for the card to be up...
> 
> Do you see anything wrong with packets emitted by the card ?

Unfortunately I didn't pay enough attention at the time to what was
going wrong, I wound up fixing it (by removing/reinserting the driver
stack) before I took any detailed debugging info.

If it does it again on Monday (next time I'll be on that network) I'll
take some dumps and see what I can find.

This network is a little weird anyway, so I'm not *sure* it's the
card's fault entirely...  It's a "local mobility" mobile IP network.
I'm not 100% clear on how it works, but I know it plays some kludgey
voodoo to get mobile IP working *without* the host computer being
aware it is roaming.
Ethan

-- 
If I've told you once, I've told you once
And once is all that you needed.
		-- The Refreshments, "Carefree"

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Internal airport card works (was Re: Internal airport card not working? (2.4.6-benh))

[Jeremy Radlow]

Just following up on a month old problem...

As I discovered, the problem was that I had to explicitly turn off encryption
via iwconfig.  I don't know whether the problem is in the card's firmware
(which I haven't updated yet) or in the driver initialization, but the
airport card works great under 2.4.6, and of course under the latest kernel
- 2.4.9-benh0.

-Jeremy

p.s. from /etc/network/interfaces:

auto eth1
iface eth1 inet static
         address 192.168.1.13
         netmask 255.255.255.0
         network 192.168.1.0
         broadcast 192.168.1.255
         gateway 192.168.1.1
         up iwconfig eth1 key off
         up iwconfig eth1 essid "Apple Network xxxxxx"
         up iwconfig eth1 mode Managed


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