netdev - Re: [PATCH net-2.6.26] netlink: make socket filters work on netlink

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Message-Id: <20080331.130757.199769025.davem@davemloft.net>
Date:	Mon, 31 Mar 2008 13:07:57 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	kaber@...sh.net
Cc:	shemminger@...tta.com, hadi@...erus.ca, netdev@...r.kernel.org
Subject: Re: [PATCH net-2.6.26] netlink: make socket filters work on netlink

From: Patrick McHardy <kaber@...sh.net>
Date: Mon, 31 Mar 2008 21:40:51 +0200

> Thanks. It seems it parses only top-level attributes, which
> is probably why you didn't need the nlattr_find command I
> used in my patch. The problem with this is that finding and
> parsing nested attributes using the existing BPF commands is
> complicated since you need to fully parse netlink headers
> and walk through them. You can't even reuse that part for
> multiple nested attributes since you can't jump backwards.
> So I think it would be preferrable to have a simpler method
> for this.

Agreed.
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