Re: [PATCH 17/33] netns ct: final init_net tweaks

Patrick McHardy
2008-09-09T07:52:01Z

Alexey Dobriyan wrote:
> On Tue, Sep 09, 2008 at 09:20:42AM +0200, Patrick McHardy wrote:
>> Having multiple of these net_eq checks per function (14 total) is
>> not a very nice way to do this.
>
> Yep, I was just afraid of some subtle ordering rules and to keep
> potential init_net breakage to minimum.

Me too, but I still prefer to do it properly once.

>> How about splitting the code into a netns and a global part instead?
>
> Prebably they aren't strict at all.

Not particulary. For cleanup a three stage approach with

1. init_net deactivation (ip_ct_attach = NULL)
2. generic netns cleanup
3. init_net specific final cleanup (slab cache, nf_conntrack_cachep,
accounting, helpers, protocols, ...)

should work fine.

The initialization should be OK with just a init_net part
and a generic netns part.