netdev - Re: [PATCH] bridge: Fix br_should_learn to check vlan

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Message-ID: <541813AB.2060301@lab.ntt.co.jp>
Date:	Tue, 16 Sep 2014 19:40:43 +0900
From:	Toshiaki Makita <makita.toshiaki@....ntt.co.jp>
To:	David Miller <davem@...emloft.net>, vyasevich@...il.com
CC:	netdev@...r.kernel.org, toshiaki.makita1@...il.com,
	vyasevic@...hat.com
Subject: Re: [PATCH] bridge: Fix br_should_learn to check vlan_enabled

On 2014/09/16 6:38, David Miller wrote:
> From: Vladislav Yasevich <vyasevich@...il.com>
> Date: Mon, 15 Sep 2014 15:24:26 -0400
> 
>> As Toshiaki Makita pointed out, the BRIDGE_INPUT_SKB_CB will
>> not be initialized in br_should_learn() as that function
>> is called only from br_handle_local_finish().  That is
>> an input handler for link-local ethernet traffic so it perfectly
>> correct to check br->vlan_enabled here.
>>
>> Reported-by: Toshiaki Makita<toshiaki.makita1@...il.com>
>> Fixes: 20adfa1 bridge: Check if vlan filtering is enabled only once.
>> Signed-off-by: Vladislav Yasevich <vyasevic@...hat.com>
> 
> Applied, thanks Vlad.

Hi David,

Could you queue this for -stable as well?
Without this, FDB can be poisoned by disallowed ports.
(the same problem as stated in e0d7968ab6c8 "bridge: Prevent insertion
of FDB entry with disallowed vlan")

Thanks,
Toshiaki Makita
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