netdev - Re: [PATCH] rtnetlink: Actually use the policy for the IFLA_VF

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Message-ID: <20150702162300.GA4642@obsidianresearch.com>
Date:	Thu, 2 Jul 2015 10:23:00 -0600
From:	Jason Gunthorpe <jgunthorpe@...idianresearch.com>
To:	Daniel Borkmann <daniel@...earbox.net>
Cc:	netdev@...r.kernel.org,
	Mitch Williams <mitch.a.williams@...el.com>,
	Jeff Kirsher <jeffrey.t.kirsher@...el.com>,
	Nicolas Dichtel <nicolas.dichtel@...nd.com>,
	Jiri Pirko <jiri@...nulli.us>, Thomas Graf <tgraf@...g.ch>,
	"David S. Miller" <davem@...emloft.net>,
	Chris Wright <chrisw@...s-sol.org>
Subject: Re: [PATCH] rtnetlink: Actually use the policy for the IFLA_VF_INFO

On Wed, Jul 01, 2015 at 11:36:15AM +0200, Daniel Borkmann wrote:
> Hi Jason,
> 
> On 07/01/2015 12:52 AM, Jason Gunthorpe wrote:
> >It turns out the policy was defined but never actually checked,
> >so lets check it.
> >
> >Fixes: ebc08a6f47ee ("rtnetlink: Add VF config code to rtnetlink")
> 
> I would argue that the actual commit would be ...
> 
> Fixes: c02db8c6290b ("rtnetlink: make SR-IOV VF interface symmetric")

Yes, agree

> So, commit c02db8c6290b moved it into a nested attribute (IFLA_VF_INFO)
> where we indeed don't do further validation. Imho, we should pass the
> parsed attribute table from nla_parse_nested() down into do_setvfinfo(),
> something like the below; I can give it a test run on my ixgbe.

Yes, that is saner overall

Jason
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