netdev - Re: [PATCH net v4 0/2] rhashtable: Fix rhltable duplicates insertion

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Date:   Sun, 11 Mar 2018 11:16:44 +0200
From:   Or Gerlitz <ogerlitz@...lanox.com>
To:     David Miller <davem@...emloft.net>, paulb@...lanox.com
Cc:     tgraf@...g.ch, herbert@...dor.apana.org.au, netdev@...r.kernel.org,
        kliteyn@...lanox.com, roid@...lanox.com, shahark@...lanox.com,
        markb@...lanox.com, jiri@...lanox.com, matanb@...lanox.com
Subject: Re: [PATCH net v4 0/2] rhashtable: Fix rhltable duplicates insertion

On 3/7/2018 6:23 PM, David Miller wrote:
> From: Paul Blakey <paulb@...lanox.com>
> Date: Wed,  7 Mar 2018 16:00:11 +0200
> 
>> On our mlx5 driver fs_core.c, we use the rhltable interface to store
>> flow groups. We noticed that sometimes we get a warning that flow group isn't
>> found at removal. This rare case was caused when a specific scenario happened,
>> insertion of a flow group with a similar match criteria (a duplicate),
>> but only where the flow group rhash_head was second (or not first)
>> on the relevant rhashtable bucket list.

> I already applied v3, sorry.  But I did add Herbert's ACKs.

Hi Dave,

In mlx5 we use this facility since 4.14, can you please push to -stable of at least 4.14 if not earlier?

Or.