netdev - Re: [PATCH net-next 1/1] ipvlan: Initial check-in of the IPVLAN driver.

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Message-ID: <CAHA+R7O_kcNU4bQmVjpbR+50g-6DphV2J=MCYvTE4ELqKpKqgw@mail.gmail.com>
Date:	Tue, 11 Nov 2014 16:37:56 -0800
From:	Cong Wang <cwang@...pensource.com>
To:	David Miller <davem@...emloft.net>
Cc:	Mahesh Bandewar <maheshb@...gle.com>,
	netdev <netdev@...r.kernel.org>,
	Eric Dumazet <edumazet@...gle.com>,
	Maciej Żenczykowski <maze@...gle.com>,
	Laurent Chavey <chavey@...gle.com>,
	Tim Hockin <thockin@...gle.com>,
	Brandon Philips <brandon.philips@...eos.com>,
	Pavel Emelyanov <xemul@...allels.com>
Subject: Re: [PATCH net-next 1/1] ipvlan: Initial check-in of the IPVLAN driver.

On Tue, Nov 11, 2014 at 3:19 PM, David Miller <davem@...emloft.net> wrote:
> From: Cong Wang <cwang@...pensource.com>
> Date: Tue, 11 Nov 2014 15:12:27 -0800
>
>> On Tue, Nov 11, 2014 at 2:29 PM, Mahesh Bandewar <maheshb@...gle.com> wrote:
>>> This driver is very similar to the macvlan driver except that it
>>> uses L3 on the frame to determine the logical interface while
>>> functioning as packet dispatcher. It inherits L2 of the master
>>> device hence the packets on wire will have the same L2 for all
>>> the packets originating from all virtual devices off of the same
>>> master device.
>>
>> Why do we need this from the beginning?
>> IOW, what problem does this solve while macvlan doesn't?
>
> macvlan has several built-in limitations, which IP VLAN absolutely
> does not have.
>
> Eric Dumazet spoke about this at the networking track at the kernel
> summit in Chicago, maybe he or another person working on this can
> chime in.

Either you need to publish it or document it in this changelog,
otherwise too much information is missing.
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