netdev - Re: [PATCH] selinux: add a skb_owned

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Message-ID: <alpine.LRH.2.02.1304091737310.13097@tundra.namei.org>
Date:	Tue, 9 Apr 2013 17:38:07 +1000 (EST)
From:	James Morris <jmorris@...ei.org>
To:	Eric Dumazet <eric.dumazet@...il.com>
cc:	Paul Moore <pmoore@...hat.com>, David Miller <davem@...emloft.net>,
	netdev@...r.kernel.org, mvadkert@...hat.com,
	linux-security-module@...r.kernel.org
Subject: Re: [PATCH] selinux: add a skb_owned_by() hook

On Mon, 8 Apr 2013, Eric Dumazet wrote:

> From: Eric Dumazet <edumazet@...gle.com>
> 
> Commit 90ba9b1986b5ac (tcp: tcp_make_synack() can use alloc_skb())
> broke certain SELinux/NetLabel configurations by no longer correctly
> assigning the sock to the outgoing SYNACK packet.
> 
> Cost of atomic operations on the LISTEN socket is quite big,
> and we would like it to happen only if really needed.
> 
> This patch introduces a new security_ops->skb_owned_by() method,
> that is a void operation unless selinux is active.
> 
> Reported-by: Miroslav Vadkerti <mvadkert@...hat.com>
> Diagnosed-by: Paul Moore <pmoore@...hat.com>
> Signed-off-by: Eric Dumazet <edumazet@...gle.com>
> Cc: "David S. Miller" <davem@...emloft.net>
> Cc: linux-security-module@...r.kernel.org

Acked-by: James Morris <james.l.morris@...cle.com>


-- 
James Morris
<jmorris@...ei.org>
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