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From: David Miller <davem@davemloft.net>
Subject: Re: net: af_packet: skb_orphan should be avoided in TX path.
Date: Wed, 08 Sep 2010 10:39:12 -0700 (PDT)
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From: Eric Dumazet <eric.dumazet@gmail.com>
Date: Mon, 06 Sep 2010 17:44:27 +0200

> skb_orphan() is not about protecting data, but doing per socket memory
> accounting.

Right, therefore I would suggest we use a different callback mechanism
for af_packet to fix this problem.