From: Pablo Neira Ayuso <pablo@netfilter.org>
To: Florian Westphal <fw@strlen.de>
Cc: netfilter-devel@vger.kernel.org
Subject: Re: [PATCH nf 0/5] netfilter: conntrack: make zone id part of conntrack hash
Date: Tue, 21 Sep 2021 03:47:15 +0200 [thread overview]
Message-ID: <YUk5o8UCz7rdmhdH@salvia> (raw)
In-Reply-To: <20210908122839.7526-1-fw@strlen.de>
On Wed, Sep 08, 2021 at 02:28:33PM +0200, Florian Westphal wrote:
> This patch set makes the zone id part of the conntrack hash again.
>
> First patch is a followup to
> d7e7747ac5c2496c9,
> "netfilter: refuse insertion if chain has grown too large".
>
> Instead of a fixed-size limit, allow for some slack in the drop
> limit. This makes it harder to extract information about hash
> table collisions/bucket overflows.
>
> Second patch makes the zone id part of the tuple hash again.
> This was removed six years ago to allow split-zone support.
>
> Last two patches add test cases for zone support with colliding
> tuples. First test case emulates split zones, where NAT is responsible
> to expose the overlapping networks and provide unique source ports via
> nat port translation.
>
> Second test case exercises overlapping tuples in distinct zones.
>
> Expectation is that all connection succeed (first self test) and
> that all insertions work (second self test).
Series applied, thanks.
prev parent reply other threads:[~2021-09-21 1:55 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-09-08 12:28 [PATCH nf 0/5] netfilter: conntrack: make zone id part of conntrack hash Florian Westphal
2021-09-08 12:28 ` [PATCH nf 1/5] netfilter: conntrack: make connection tracking table less predictable Florian Westphal
2021-09-08 12:28 ` [PATCH nf 1/5] netfilter: conntrack: make max chain length random Florian Westphal
2021-09-08 12:28 ` [PATCH nf 2/5] netfilter: conntrack: include zone id in tuple hash again Florian Westphal
2021-09-08 12:28 ` [PATCH nf 3/5] netfilter: nat: include zone id in nat table " Florian Westphal
2021-09-08 12:28 ` [PATCH nf 4/5] selftests: netfilter: add selftest for directional zone support Florian Westphal
2021-09-08 12:28 ` [PATCH nf 5/5] selftests: netfilter: add zone stress test with colliding tuples Florian Westphal
2021-09-21 1:47 ` Pablo Neira Ayuso [this message]
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