netdev - Re: interface information for recvd packet

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Message-ID: <CANX6DanmMVkANBNatJtusGLJcFCtp97oED6x=kJLXaLXFQZ42A@mail.gmail.com>
Date:	Thu, 1 Sep 2011 20:07:20 -0400
From:	Viral Mehta <viral.vkm@...il.com>
To:	netdev@...r.kernel.org
Subject: Re: interface information for recvd packet

Hi,

On Thu, Sep 1, 2011 at 3:40 PM, Viral Mehta <viral.vkm@...il.com> wrote:
> On Tue, Aug 30, 2011 at 11:55 AM, Viral Mehta <viral.vkm@...il.com> wrote:
>> 2. I was looking at net/ipv4/tcp.c and in function tcp_recvmsg(); I am
>> trying to get interface name by accessing sk_buff->dev->name
>
> I tried printing address of SKBs, but it gives different address in
> NIC driver and tcp.c
> My understanding is, struct sk_buff* remains same through out all
> layers i.e., NIC driver allocates it after receving frame
> and same is passed till TCP layer. But, apparently looks I am wrong
> from the prints that I have put.
>
> Can someone shed some light ?
>

Sorry for the noise. Also I got why nobody replied to my question :-)
Anyway, I was doing silly mistake while debugging the things; my
printks were at wrong place.

And everything works as expected and as per my understanding....
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