From: Harsh <hanemade@gmail.com>
To: MANJUNATH <manjunath@ece.iisc.ernet.in>
Cc: netdev@oss.sgi.com
Subject: Re: loopback packet processing.
Date: Wed, 15 Dec 2004 14:38:54 +0530 [thread overview]
Message-ID: <cfc95936041215010821f2c22a@mail.gmail.com> (raw)
In-Reply-To: <Pine.BSF.4.58.0412141649050.71544@ece.iisc.ernet.in>
Hi MANJUNATH,
I actually did a lot work on kernel packet processing and
found that ping packet creation enters in ethernet.c.
Also can you tell me what happens in ip_finish_output2 when
ping ICMP packet is created by kernel? what header is added there.
Also in receving end control enters in ethernet.c to check
eth->h_proto field which is ETH_P_IP. How & where it is added by
kernel in case of PING packet?
regards,
Harsh.
On Tue, 14 Dec 2004 16:53:33 +0530 (IST), MANJUNATH
<manjunath@ece.iisc.ernet.in> wrote:
>
>
> Hi,
>
> When u send data to the loopback address, control never
> Enters "ethernet" modules.(Data link layer)
>
> Since ping inturn uses program interface to ICMP which is a part
> of IPV4 s/w, for loopback ping IP modules themselves replies. Ethernet
> does not come into picture.
>
> cheers,
> Manjunath
>
>
prev parent reply other threads:[~2004-12-15 9:08 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-12-14 10:42 loopback packet processing Harshal Nemade
[not found] ` <Pine.BSF.4.58.0412141649050.71544@ece.iisc.ernet.in>
2004-12-15 9:08 ` Harsh [this message]
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