Re: [PATCH nf-next 0/4] netfilter: xtables: don't register hooks by default

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On Thu, Feb 25, 2016 at 10:08:34AM +0100, Florian Westphal wrote:
> This work changes xtables to register tables only
> when the ip(6)tables/arptables command is invoked inside a netns.
> Also changes br_netfilter to not add its sabotage hooks until
> a bridge is created inside the netns.
> 
> The initial namespace isn't affected; hooks are still registered
> on module load time there.
> 
> netperf receiver running in netns 1.
> init ns with empty mangle+filter table.
> 
> Recv   Send    Send
> Socket Socket  Message  Elapsed
> Size   Size    Size     Time     Throughput
> bytes  bytes   bytes    secs.    10^6bits/sec
> 
> From ns2 (empty mangle + filter table):
> 87380  16384  16384    180.00   22034.90
> 87380  16384  16384    180.00   22355.71
> 87380  16384  16384    180.00   21906.88
> 
> from ns3, no iptables invocations:
> 87380  16384  16384    180.00   23103.76
> 87380  16384  16384    180.00   22975.47
> 87380  16384  16384    180.00   22880.08
> 
> -> ~4% delta.
> 
> Changes since last iteration:
>  - dropped the conntrack changes for now
>  - split patch #2 to make review a bit easier

I have placed this in the nf-next tree, thanks Florian.
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