netdev - Re: [PATCH net] net: Disallow providing non zero VLAN ID for NIC drivers FDB add flow

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Message-ID: <CAJ3xEMhbic5w4d0dGsTMRDoq5Vx8wqZRFpy-q+8HaeDfYciUqw@mail.gmail.com>
Date:	Sun, 14 Dec 2014 22:14:27 +0200
From:	Or Gerlitz <gerlitz.or@...il.com>
To:	Jiri Pirko <jiri@...nulli.us>
Cc:	Or Gerlitz <ogerlitz@...lanox.com>,
	"David S. Miller" <davem@...emloft.net>,
	Linux Netdev List <netdev@...r.kernel.org>,
	Andy Gospodarek <gospo@...ulusnetworks.com>,
	Jamal Hadi Salim <jhs@...atatu.com>,
	John Fastabend <john.r.fastabend@...el.com>
Subject: Re: [PATCH net] net: Disallow providing non zero VLAN ID for NIC
 drivers FDB add flow

On Sun, Dec 14, 2014 at 9:23 PM, Jiri Pirko <jiri@...nulli.us> wrote:
> Sun, Dec 14, 2014 at 05:19:05PM CET, ogerlitz@...lanox.com wrote:
>>The current implementations all use dev_uc_add_excl() and such whose API
>>doesn't support vlans, so we can't make it with NICs HW for now.
>>
>>Fixes: f6f6424ba773 ('net: make vid as a parameter for ndo_fdb_add/ndo_fdb_del')
>
> Maybe I'm missing something, but this commit did not introduce the
> problem.

This commit introduced the vid param to ndo_fdb_add and ndo_dflt_fdb_add
which further call the dev_uc_add APIs... so it did introduced the
ability to provide VID into these APIs, right? and we want to protect
against anyone using this ability @ this point.

> If was there already before when NDA_VLAN was set and ignored.
> But other than this. I like the patch
>
> Reviewed-by: Jiri Pirko <jiri@...nulli.us>
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