netdev - Re: [PATCH net-next 2/2] openvswitch: Support conntrack zone limit

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Message-ID: <3db148a6-034d-d2f4-ae59-5ef97d1a1dda@gmail.com>
Date:   Wed, 18 Apr 2018 08:05:05 -0700
From:   Gregory Rose <gvrose8192@...il.com>
To:     Yi-Hung Wei <yihung.wei@...il.com>
Cc:     netdev@...r.kernel.org
Subject: Re: [PATCH net-next 2/2] openvswitch: Support conntrack zone limit

On 4/17/2018 5:30 PM, Yi-Hung Wei wrote:
>> s/to commit/from committing/
>> s/entry/entries/
> Thanks, will fix that in both patches in v2.
>
>
>> I think this is a great idea but I suggest porting to the iproute2 package
>> so everyone can use it.  Then git rid of the OVS specific prefixes.
>> Presuming of course that the conntrack connection
>> limit backend works there as well I guess.  If it doesn't, then I'd suggest
>> extending
>> it.  This is a nice feature for all users in my opinion and then OVS
>> can take advantage of it as well.
> Thanks for the comment.  And yes, I think currently, iptables’s
> connlimit extension does support limiting the # of connections.  Users
> need to configure the zone properly, and the iptable’s connlimit
> extension is using netfilter's nf_conncount backend already.
>
> The main goal for this patch is to utilize netfilter backend
> (nf_conncount) to count and limit the number of connections. OVS needs
> the proposed OVS_CT_LIMIT netlink API and the corresponding booking
> data structure because the current nf_conncount backend only counts
> the # of connections, but it does not keep track of the connection
> limit in nf_conncount.
>
> Thanks,
>
> -Yi-Hung

Thanks Yi-hung, I figured I was just missing something there.  I 
appreciate the explanation.

- Greg