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From: Patrick McHardy <kaber@trash.net>
To: Yasuyuki KOZAKAI <yasuyuki.kozakai@toshiba.co.jp>
Cc: mmohsenz@gmail.com, rusty@rustcorp.com.au,
	netfilter-devel@lists.netfilter.org, pablo@netfilter.org,
	kadlec@blackhole.kfki.hu
Subject: Re: [RFC][PATCH 0/7]: ct_extend
Date: Fri, 01 Jun 2007 17:33:59 +0200	[thread overview]
Message-ID: <46603C67.4070201@trash.net> (raw)
In-Reply-To: <200705310902.l4V9212d010654@toshiba.co.jp>

Yasuyuki KOZAKAI wrote:
> I've revisited the issue of competition between NAT referring
> extension area for NAT and nfctnetlink trying to assign helper (which might
> result in reallocating extension area for NAT).
> 
> And I've found that the current nfctnetlink has similar but different
> problem. It is possible to change helper infomations while helper referring
> them.
> 
> After all, if we don't want to introduce rwlock for such competition,
> we'd better to limit nfctnetlink so that it doesn't assign, change, or
> remove helper of confirmed conntrack.
> 
> If people agree to remove ctnetlink_change_helper(), I'll submit the latest
> pactchset of ct_extend.


I don't think we can do that, it has been part of the ABI since the
beginning I think and we might need it for userspace helpers.

How about grabbing nf_conntrack_lock and replacing the entire conntrack
structure in this case?

  parent reply	other threads:[~2007-06-01 15:33 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-05-07 12:00 [RFC][PATCH 0/7]: ct_extend Yasuyuki KOZAKAI
2007-05-08  9:46 ` Patrick McHardy
2007-05-09 11:05   ` Yasuyuki KOZAKAI
     [not found]   ` <200705091105.l49B5DTu023689@toshiba.co.jp>
2007-05-10 12:34     ` Patrick McHardy
2007-05-11  1:51       ` Yasuyuki KOZAKAI
2007-05-30 23:43 ` Mohammad Mohsenzadeh
2007-05-31  4:38   ` Patrick McHardy
2007-05-31  9:02     ` Yasuyuki KOZAKAI
     [not found]     ` <200705310902.l4V9212d010654@toshiba.co.jp>
2007-06-01 15:33       ` Patrick McHardy [this message]
2007-06-04  0:45         ` Yasuyuki KOZAKAI
     [not found]         ` <200706040045.l540jnhh008964@toshiba.co.jp>
2007-06-04 11:58           ` Patrick McHardy

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