Re: [PATCH 2/3] netlink: allow to pass data pointer to netlink_dump_start() callback

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From: pablo@xxxxxxxxxxxxx
Date: Sat, 25 Feb 2012 01:30:16 +0100

> From: Pablo Neira Ayuso <pablo@xxxxxxxxxxxxx>
> This patch allows you to pass a data pointer that can be
> accessed from the dump callback.
> Netfilter is going to use this patch to provide filtered dumps
> to user-space. This is specifically interesting in ctnetlink that
> may handle lots of conntrack entries. We can save precious
> cycles by skipping the conversion to TLV format of conntrack
> entries that are not interesting for user-space.
> More specifically, ctnetlink will include one operation to allow
> to filter the dumping of conntrack entries by ctmark values.
> Signed-off-by: Pablo Neira Ayuso <pablo@xxxxxxxxxxxxx>

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