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Date: Wed, 17 May 2006 10:24:22 +0400
From: Sergey Matveychuk <sem@FreeBSD.org>
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To: Warner Losh <imp@bsdimp.com>
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Cc: freebsd-usb@FreeBSD.org
Subject: Re: all usb-ethernet adapters are borked?
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Warner Losh wrote:
> From: Sergey Matveychuk <sem@FreeBSD.org>
> Subject: Re: all usb-ethernet adapters are borked?
> Date: Tue, 16 May 2006 22:06:41 +0400
> 
>> Warner Losh wrote:
>>> From: Sergey Matveychuk <sem@freebsd.org>
>>> Subject: all usb-ethernet adapters are borked?
>>> Date: Tue, 16 May 2006 13:12:54 +0400
>>>
>>>> After I've explored my problem with rue(4) I've found out our USB stack
>>>> is incompatible with our current TCP/IP implementation (6.0+) ("Trying
>>>> sleep, but thread marked as sleeping prohibited" problem).
>>>>
>>>> I've discussed it with glebius and he told me, it's complete USB problem.
>>>>
>>>> As I understand USB transfer should be rewritten to use no mspleep calls.
>>>>
>>>> Any comments? Any quick fixes?
>>> Have you tried marking the rue driver as requing giant?
>> I'm not sure how to do it. But let me make an assumption the driver
>> already do it:
>>
>> ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST |
>> IFF_NEEDSGIANT;
>>
>> Is it what do you mean? Or you mean another mark?
> 
> No.  that's what I mean.  Can you post a traceback to the sleeping
> with the sleep lock issue?
> 
> Warner

Sure.
http://sunner.elcomnet.ru/~sem/sleep.panic

-- 
Sem.