netdev - attach additional value to skb

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Message-ID: <f36b08ee0710221303y5a846a27v1ebdc919db0f00ac@mail.gmail.com>
Date:	Mon, 22 Oct 2007 22:03:47 +0200
From:	"Yakov Lerner" <iler.ml@...il.com>
To:	netdev@...r.kernel.org
Subject: attach additional value to skb

1. How can I attach my 32-bit value to the skb in the
PRE_ROUTNIG hook such that FORWARD and POST_ROUTING
hooks can later access this value from the skb ?

Can I use sk_buff->cb for that ?

2.
I want to add my custom destructor to the skb, the function
pointer to be called at skb destruction time. Will the following
work:  if I push  address of my_destructor to the
sk-buff->destructor field,  and then when my_destructor
is called, I call the (saved)  old value of  sk-buff->destructor ?
Will this work ?

Yakov
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