netdev - Re: Bluetooth 6LoWPAN and routing

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Message-ID: <52691711.3010909@linux.intel.com>
Date:	Thu, 24 Oct 2013 15:48:17 +0300
From:	Jukka Rissanen <jukka.rissanen@...ux.intel.com>
To:	Alexander Aring <alex.aring@...il.com>
CC:	netdev@...r.kernel.org
Subject: Re: Bluetooth 6LoWPAN and routing

Hi Alexander,

On 24.10.2013 15:25, Alexander Aring wrote:
> Hi Jukka,
>
> On Thu, Oct 24, 2013 at 09:45:40AM +0300, Jukka Rissanen wrote:
>> Hi,
>>
>> I have been prototyping with BT 6LoWPAN support (using this draft
>> http://tools.ietf.org/html/draft-ietf-6lowpan-btle-12 as a
>> reference). I sent first version yesterday to linux-bluetooth ml
>> http://thread.gmane.org/gmane.linux.bluez.kernel/39394
>>
> I see you take many code from the 6lowpan ieee802154 implementation.
> (Just notice you drop the original authors from there)

Hmm, those got dropped, I am sorry about that. I will add the original 
authors information of course.

>
> I have a couple of patches to fix a lot of bugs in the current 6LoWPAN
> ieee802154 implementation.
>
> Some bugs which I found:
>
>    - Fix race conditions in fragmentation handling
>    - Fix UDP compression/uncompressionm, which is completly broken
>    - Fragmentation handling isn't rfc4944 compatible
>
> And some other improvements. I see your rfc has the same issues (e.g.
> fragmentation race conditions).
>
> Currently I preparing these patches for mainlining.

Excellent news!

>
> But my question is:
>
> What we do now, make a generic 6LoWPAN implementation. Or bluetooth,
> ieee802154 makes his own implementation?

At least the compression/uncompression code and fragmentation could be 
shared. Could it possible to isolate relevant functions to separate file 
that would be usable by both BT and ieee802154?

>
> - Alex
>

-- 
Cheers,
Jukka
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