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From: Anders Fugmann <afu@fugmann.dhs.org>
To: Kim Jong Tae <dejavu@bora.dacom.co.kr>
Cc: netfilter@lists.netfilter.org
Subject: Re: hook function in  NF_IP_LOCAL_IN does not interruptible_sleep_on?
Date: Sun, 15 Sep 2002 16:05:14 +0200	[thread overview]
Message-ID: <3D84939A.9000005@fugmann.dhs.org> (raw)
In-Reply-To: Pine.GSO.3.94K.1020915200933.12847A-100000@bora.dacom.co.kr

Kim Jong Tae wrote:
> Hi all.
> 
> I  makes hook function, which will communicate with user process
> for each packet's arrival.
> First, hook function sends data to user process and user process sends
> back data. I think that before receiving data from user process, hook
> function must wait.  hook func's wait is using interruptible_sleep_on.
> When hook func call interruptible_sleep_on, system hangs!!!
You are calling sleep in_interrupt. This is not allowed.

You forgot to mention how you cummunicate with the userspace process. 
Throgh a device-node?

Regards
Anders Fugmann






  reply	other threads:[~2002-09-15 14:05 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2002-09-15 11:13 hook function in NF_IP_LOCAL_IN does not interruptible_sleep_on? Kim Jong Tae
2002-09-15 14:05 ` Anders Fugmann [this message]
2002-09-16  0:58   ` Kim Jong Tae
2002-09-16  3:18 ` James Morris

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