netdev - NF_IP_POST_ROUTING hook question (2.4)

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Message-ID: <f36b08ee0710160503i78a7f102y762002b40dac9845@mail.gmail.com>
Date:	Tue, 16 Oct 2007 14:03:39 +0200
From:	"Yakov Lerner" <iler.ml@...il.com>
To:	netdev@...r.kernel.org
Subject: NF_IP_POST_ROUTING hook question (2.4)

In the NF_IP_POST_ROUTING hook function, how can I
tell that packet originated locally vs was forwarded ?
I need to hook NF_IP_POST_ROUTING not NF_IP_FORWARD.

I'd expect that 'net_device *in' argument to be  not NULL for
forwarded packets.

But what I see is NULL for both forwarded  and locally sent packets
(in NF_IP_POST_ROUTING hook).
Which field of skb can  tell me that packet originated locally ?

Yakov
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