linux-kernel - tcp/ip stack question

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Message-ID: <f69849430706070550k4780060dheaa0f3073555d137@mail.gmail.com>
Date:	Thu, 7 Jun 2007 05:50:06 -0700
From:	"kernel coder" <lhrkernelcoder@...il.com>
To:	linux-kernel@...r.kernel.org
Subject: tcp/ip stack question

hi,
       I am recieveing the packet on eth1 and want to send it through eth2.

I've written code in netif_recieve_skb function .This code changes the
mac header in sk_buff structure so that it can be send through other
interface card.But when i call ip_dev_find fucntion to get the second
interface structure ,NULL is returned.I checked the ip of second
ethernet card  and it was similar to one passed to ip_dev_find
fucntion,then why NULL is being returned?

Actually if i get the correct dev structure from ip_dev_find fucntion
then i'll assign that dev structure to current skbuff->dev  and call
dev_queue_xmit fucntion,so that it transmitted through second
interface card.Is mine approach correct?

shahzad
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