From mboxrd@z Thu Jan  1 00:00:00 1970
From: David Miller <davem@davemloft.net>
Subject: Re: [PATCH net-next-2.6] netfilter: allow nf_tproxy_core module to
 be removed
Date: Wed, 23 Jun 2010 11:55:58 -0700 (PDT)
Message-ID: <20100623.115558.189705237.davem@davemloft.net>
References: <20100623183503.GE2687@psychotron.bos.redhat.com>
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From: Florian Westphal <fw@strlen.de>
Date: Wed, 23 Jun 2010 20:46:11 +0200

> tproxy assigns skb->destructor, what prevents module unload while such skbs may
> still be around?

The only reference to nf_tproxy_core.ko is for the symbol, "nf_tproxy_assign_sock".
xt_TPROXY.c, which references this symbol, thus creates a symbol dependency on this
module, so xt_TPROXY.o needs to unload before nf_tproxy_core.ko can unload, and
xt_TPROXY.o has it's own manner for handling module references properly.