netdev - Re: [RESEND][NETFILTER][PATCH] nfqnl_mangle() not requesting enough space for bigger reinjected packet.

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Date:	Tue, 29 Apr 2008 01:07:57 +0200
From:	arno@...isbad.org (Arnaud Ebalard)
To:	Patrick McHardy <kaber@...sh.net>
Cc:	Linux Netdev List <netdev@...r.kernel.org>,
	David Miller <davem@...emloft.net>
Subject: Re: [RESEND][NETFILTER][PATCH] nfqnl_mangle() not requesting enough space for bigger reinjected packet.

Hi,

Patrick McHardy <kaber@...sh.net> writes:

> Good catch, thanks. That code seems to be very resistent against
> attempts to fix it :)
>
> Patch applied, and I'll also send it to -stable once it hits
> upstream.

Ack.

BTW, while looking at the code, I noticed the call to skb_copy_expand()
leads to a complete copy of current sk_buff data to the new sk_buff.
Those data are then completely rewritten a few lines later. Too bad
there is no simple way (considering skbuff.h) to prevent the useless
copy.

Cheers,

a+

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