netdev - Re: [PATCH RFC 0/4] net: add bpfilter

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Message-Id: <20180219.104316.649681283920955662.davem@davemloft.net>
Date:   Mon, 19 Feb 2018 10:43:16 -0500 (EST)
From:   David Miller <davem@...emloft.net>
To:     jengelh@...i.de
Cc:     laforge@...monks.org, daniel@...earbox.net, netdev@...r.kernel.org,
        netfilter-devel@...r.kernel.org, alexei.starovoitov@...il.com
Subject: Re: [PATCH RFC 0/4] net: add bpfilter

From: Jan Engelhardt <jengelh@...i.de>
Date: Mon, 19 Feb 2018 16:37:57 +0100 (CET)

> On Monday 2018-02-19 16:32, David Miller wrote:
> 
>>From: Harald Welte <laforge@...monks.org>
>>Date: Mon, 19 Feb 2018 16:23:21 +0100
>>
>>> Also, as long as legacy ip_tables/x_tables is still in the kernel, you
>>> can still run your old userspace against that old implementation in the
>>> kernel.
>>
>>But without offloading, and the various other benefits which I have
>>tried to clearly explain to both you and Florian.
> 
> Which is actually the business model to get people *off* the old ABI in 
> reasonable time.

Hosting companies can't change what customers run in their containers.

But if they are told that a kernel upgrade will get them offloading
and increase their performance termendously, then that gives them real
value.