netdev - Question with commit 299b0767(ipv6: Fix IPsec slowpath fragmentation problem)

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Message-ID: <4F38C57F.5000706@cn.fujitsu.com>
Date:	Mon, 13 Feb 2012 16:10:39 +0800
From:	Li Wei <lw@...fujitsu.com>
To:	Steffen Klassert <steffen.klassert@...unet.com>
CC:	netdev <netdev@...r.kernel.org>
Subject: Question with commit 299b0767(ipv6: Fix IPsec slowpath fragmentation
 problem)

Hi, Steffen!

I found some problem while doing networking tests with IPSec that
the first fragment doesn't use the max MTU to fill payload, but with
20 bytes smaller. When I reverted your commit 299b0767(ipv6: Fix 
IPsec slowpath fragmentation problem), things goes well.

Would you so kindly to point me out what the commit did, because I
think the original implementation had taken IPSec header and tailer
into account.

Thanks!

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