From: Steffen Klassert <steffen.klassert@secunet.com>
To: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Cc: herbert@gondor.apana.org.au, davem@davemloft.net, netdev@vger.kernel.org
Subject: Re: [PATCH ipsec-next v2] xfrm: allow to avoid copying DSCP during encapsulation
Date: Thu, 7 Mar 2013 08:46:27 +0100 [thread overview]
Message-ID: <20130307074626.GB21448@secunet.com> (raw)
In-Reply-To: <1361526894-4104-1-git-send-email-nicolas.dichtel@6wind.com>
On Fri, Feb 22, 2013 at 10:54:54AM +0100, Nicolas Dichtel wrote:
> By default, DSCP is copying during encapsulation.
> Copying the DSCP in IPsec tunneling may be a bit dangerous because packets with
> different DSCP may get reordered relative to each other in the network and then
> dropped by the remote IPsec GW if the reordering becomes too big compared to the
> replay window.
>
> It is possible to avoid this copy with netfilter rules, but it's very convenient
> to be able to configure it for each SA directly.
>
> This patch adds a toogle for this purpose. By default, it's not set to maintain
> backward compatibility.
>
> Field flags in struct xfrm_usersa_info is full, hence I add a new attribute.
>
> Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Applied to ipsec-next, thanks!
prev parent reply other threads:[~2013-03-07 7:46 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-02-18 15:32 [PATCH ipsec-next] xfrm: allow to avoid copying DSCP during encapsulation Nicolas Dichtel
2013-02-22 6:06 ` Steffen Klassert
2013-02-22 9:54 ` [PATCH ipsec-next v2] " Nicolas Dichtel
2013-03-07 7:46 ` Steffen Klassert [this message]
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