Re: [PATCH] netfilter: nf_ct_expect: partially implement ctnetlink_change_expect

[Pablo Neira Ayuso <pablo@netfilter.org>]

On Mon, May 07, 2012 at 09:43:24AM -0700, Kelvie Wong wrote:
> On Mon, May 07, 2012 at 09:28:58AM -0700, Kelvie Wong wrote:
> > That will be fine.
> > 
> > Thank you,
> > -- 
> > Kelvie Wong
> 
> Here's the patch if you don't want to do the work :)
> 
> From 2fa0ea4c54ad8b16e7978f8d41892f4d33b0db65 Mon Sep 17 00:00:00 2001
> From: Kelvie Wong <kelvie@ieee.org>
> Date: Mon, 7 May 2012 09:30:55 -0700
> Subject: [PATCH] netfilter: nf_ct_expect: partially implement
>  ctnetlink_change_expect
> 
> This refreshes the "timeout" attribute in existing expectations if one is
> given.
> 
> The use case for this would be for userspace helpers to extend the lifetime
> of the expectation when requested, as this is not possible right now
> without deleting/recreating the expectation.
> 
> I use this specifically for forwarding DCERPC traffic through:
> 
> DCERPC has a port mapper daemon that chooses a (seemingly) random port for
> future traffic to go to. We expect this traffic (with a reasonable
> timeout), but sometimes the port mapper will tell the client to continue
> using the same port. This allows us to extend the expectation accordingly.
> 
> Signed-off-by: Kelvie Wong <kelvie@ieee.org>

Applied, thanks Kelvie.