From: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
To: Pablo Neira Ayuso <pablo@netfilter.org>
Cc: netfilter-devel@vger.kernel.org
Subject: Re: [nftables-kernel PATCH] netfilter: nf_tables: Fixes how a table is checked to be in use
Date: Tue, 03 Sep 2013 16:25:40 +0300 [thread overview]
Message-ID: <5225E354.4090000@linux.intel.com> (raw)
In-Reply-To: <20130830223705.GA9864@localhost>
Hi Pablo,
>> Let's check table's chain list emptyness instead so struct nft_table
>> does not grow and we avoid the (unlikely to happen) overflow.
> I prefer if you send me a patch to export the table use counter. I
> think it can be useful from userspace to know if the table is used at
> all and how many times it's used. I'm neither worry about the 2^32
> chains limit and the extra 4 bytes per table (we'll have a small
> number of tables object in memory).
What's the use case for it? I mean: knowing that the table is in use, I
can see some use case (and it could be done much simpler).
The number of chains, not really. At least right now, nothing is using
it so what could be the future need for that?
Same for chains actually.
Tomasz
next prev parent reply other threads:[~2013-09-03 13:25 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-08-30 9:43 [nftables-kernel PATCH] netfilter: nf_tables: Fixes how a table is checked to be in use Tomasz Bursztyka
2013-08-30 22:37 ` Pablo Neira Ayuso
2013-09-03 13:25 ` Tomasz Bursztyka [this message]
2013-09-04 10:48 ` Pablo Neira Ayuso
2013-09-04 11:51 ` Tomasz Bursztyka
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