netdev - Re: [RFC 2/4] net: netfilter conntrack - add per-net functionality for DCCP protocol

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Date:	Tue, 10 Mar 2009 14:51:20 +0300
From:	Cyrill Gorcunov <gorcunov@...il.com>
To:	Pavel Emelyanov <xemul@...nvz.org>
Cc:	Daniel Lezcano <daniel.lezcano@...e.fr>, davem@...emloft.net,
	kaber@...sh.net, netdev@...r.kernel.org,
	linux-next@...r.kernel.org, adobriyan@...il.com,
	Cyrill Gorcunov <gorcunov@...nvz.org>
Subject: Re: [RFC 2/4] net: netfilter conntrack - add per-net functionality 
	for DCCP protocol

On Tue, Mar 10, 2009 at 2:35 PM, Pavel Emelyanov <xemul@...nvz.org> wrote:
...
>>>>>   static int __init nf_conntrack_proto_dccp_init(void)
>>>>>  {
>>>>>     int err;
>>>>>  -    err = nf_conntrack_l4proto_register(&dccp_proto4);
>>>>> +    err = register_pernet_gen_device(&dccp_net_id, &dccp_net_ops);
>>>>>
>>> [ cut ]
>>>> Shouldn't it be register_pernet_gen_subsys ?
>>
>> No, I believe. By using  register_pernet_gen_device I'm allowed to
>> not modify 'struct net' and friends and keep all I need in my own
>> pointer retrieved thru per-net gen-device id I've registered.
>
> I believe Daniel means, that we need the register_xxx_get_subsys call
> for subsystems, rather than devices, that will behave according to the
> generic net pointers.
>
> Daniel, am I right with this suggestion?
>
...
Ah, yes, just checked register_pernet_gen_subsys -- it's what I need. Thanks!
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