linux-kernel - Re: [RFC/RFT, net-next, 00/17] net: Convert neighbor tables to per-namespace

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Date:   Sun, 12 Aug 2018 11:37:06 -0600
From:   David Ahern <dsahern@...il.com>
To:     Vasily Averin <vvs@...tuozzo.com>, dsahern@...nel.org,
        netdev@...r.kernel.org
Cc:     nikita.leshchenko@...cle.com, roopa@...ulusnetworks.com,
        stephen@...workplumber.org, idosch@...lanox.com, jiri@...lanox.com,
        saeedm@...lanox.com, alex.aring@...il.com,
        linux-wpan@...r.kernel.org, netfilter-devel@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [RFC/RFT, net-next, 00/17] net: Convert neighbor tables to
 per-namespace

On 8/12/18 12:46 AM, Vasily Averin wrote:
> On 07/17/2018 03:06 PM, dsahern@...nel.org wrote:
>> From: David Ahern <dsahern@...il.com>
>>
>> Nikita Leshenko reported that neighbor entries in one namespace can
>> evict neighbor entries in another. The problem is that the neighbor
>> tables have entries across all namespaces without separate accounting
>> and with global limits on when to scan for entries to evict.
>>
>> Resolve by making the neighbor tables for ipv4, ipv6 and decnet per
>> namespace and making the accounting and threshold limits per namespace.
> 
> Dear David,
> I prepared own patch set to fix this problem and found your one.
> It looks perfect for me, and I hope David Miller will merge it soon,
> however I have found a few drawbacks:
> 

Hi:

I just returned from an extended vacation. I will revive this topic in
the next few days.

Thanks for the comments. I will address in the next version.