netdev - Re: [PATCH net-next] sk-filter: Add ability to get socket filter program

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Message-Id: <20121026.150416.1261117140434521260.davem@davemloft.net>
Date:	Fri, 26 Oct 2012 15:04:16 -0400 (EDT)
From:	David Miller <davem@...emloft.net>
To:	danborkmann@...earbox.net
Cc:	xemul@...allels.com, netdev@...r.kernel.org
Subject: Re: [PATCH net-next] sk-filter: Add ability to get socket filter
 program

From: Daniel Borkmann <danborkmann@...earbox.net>
Date: Fri, 26 Oct 2012 20:07:13 +0200

> In your commit message, you address how you implement it, but not
> where it could be useful (or ``why one needs it''). For instance, in a
> simple case, you have a packet sniffer that uses PF_PACKET, sets up a
> socket filter and RX_RING, then you start looking at packets and at
> some point you stop and close everything. In which scenario would I
> (ever) call this getsockopt()? (Is it just for the sake for having a
> missing getter-function?)

Everything Pavel is working on is for checkpoint/restart.
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