netdev - Re: [PATCH next v3 1/3] ipvlan: scrub skb before routing in L3 mode.

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Message-ID: <CAM_iQpXbrdvEA=t0s5p2BA0iw2stTpiiBXFy1wJ8e+xcAUGdzA@mail.gmail.com>
Date:	Fri, 19 Feb 2016 16:30:22 -0800
From:	Cong Wang <xiyou.wangcong@...il.com>
To:	Mahesh Bandewar <maheshb@...gle.com>
Cc:	Mahesh Bandewar <mahesh@...dewar.net>,
	David Miller <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	netdev <netdev@...r.kernel.org>
Subject: Re: [PATCH next v3 1/3] ipvlan: scrub skb before routing in L3 mode.

On Thu, Feb 18, 2016 at 5:06 PM, Mahesh Bandewar <maheshb@...gle.com> wrote:
> On Thu, Feb 18, 2016 at 4:44 PM, Cong Wang <xiyou.wangcong@...il.com> wrote:
>> On Thu, Feb 18, 2016 at 4:39 PM, Mahesh Bandewar <maheshb@...gle.com> wrote:
>>> [snip]
>>>>> -       skb_dst_drop(skb);
>>>>> +       skb_scrub_packet(skb, true);
>>>>
>>>> At least this patch is still same with the previous version. Or am I
>>>> missing anything?
>>>
>>>  xnet param is now set to 'true'.
>>
>> Oh, I was suggesting to set xnet based on the netns of both ipvlan
>> device and physical device, not setting it to be true or false
>> unconditionally.
>>
> Well, thought about that but don't know any use case / user who is
> using the ipvlan slave devices in the same ns as master hence decided
> to do it this way.

In practice, probably, but in theory we still need to consider it. ;)