linux-kernel - Re: [PATCH] netfilter: add CHECKSUM target

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Message-ID: <AANLkTikamhUUuoQ8EjwPn9gB4zHZkeDuzpiqd4XcN3lx@mail.gmail.com>
Date:	Sun, 11 Jul 2010 20:45:01 +0800
From:	Changli Gao <xiaosuo@...il.com>
To:	"Michael S. Tsirkin" <mst@...hat.com>
Cc:	Jan Engelhardt <jengelh@...ozas.de>,
	Patrick McHardy <kaber@...sh.net>,
	"David S. Miller" <davem@...emloft.net>,
	Alexey Kuznetsov <kuznet@....inr.ac.ru>,
	"Pekka Savola (ipv6)" <pekkas@...core.fi>,
	James Morris <jmorris@...ei.org>,
	Hideaki YOSHIFUJI <yoshfuji@...ux-ipv6.org>,
	linux-kernel@...r.kernel.org, netfilter-devel@...r.kernel.org,
	netfilter@...r.kernel.org, coreteam@...filter.org,
	netdev@...r.kernel.org, herbert.xu@...hat.com, kvm@...r.kernel.org
Subject: Re: [PATCH] netfilter: add CHECKSUM target

On Sun, Jul 11, 2010 at 8:27 PM, Michael S. Tsirkin <mst@...hat.com> wrote:
> On Fri, Jul 09, 2010 at 11:56:26AM +0200, Jan Engelhardt wrote:
>>
>> On Friday 2010-07-09 00:29, Michael S. Tsirkin wrote:
>> >
>> > include/linux/netfilter_ipv4/ipt_CHECKSUM.h |   18 +++++++
>> > net/ipv4/netfilter/Kconfig                  |   16 ++++++
>> > net/ipv4/netfilter/Makefile                 |    1 +
>> > net/ipv4/netfilter/ipt_CHECKSUM.c           |   72 +++++++++++++++++++++++++++
>>
>> New modules should use xt.
>
> I tried moving the module to xt_CHECKSUM but now
>        iptables -A POSTROUTING -t mangle -p udp --dport 68 -j CHECKSUM --checksum-fill
> does not to load the module.
> It seems that xt_request_find_target in x_tables uses the prefix 'ip' for a module.
> What am I missing?
>

You should add MODULE_ALIAS clause, i.e.

MODULE_ALIAS("ipt_CHECKSUM");

-- 
Regards,
Changli Gao(xiaosuo@...il.com)
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