linux-kernel - Re: [PATCH] Allow LAPB users know which data were actually sent.

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Message-ID: <20110318005220.GA9674@build.ihdev.net>
Date:	Thu, 17 Mar 2011 20:52:20 -0400
From:	Sergey Lapin <slapin@...fans.org>
To:	Alan Cox <alan@...rguk.ukuu.org.uk>
Cc:	linux-x25@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] Allow LAPB users know which data were actually sent.

On Thu, Mar 17, 2011 at 11:55:32PM +0000, Alan Cox wrote:
> On Thu, 17 Mar 2011 18:20:22 -0400
> Sergey Lapin <slapin@...fans.org> wrote:
> 
> > Normally, when LAPB is transport layer for X.25 protocol,
> > internal mechanics of X.25 knows wheather data were actually
> > received by peer. But for non-X.25 protocols which use LAPB
> > as data reliability layer, it is important to have some way
> > to know what was actually sent, so we add transmit indication.
> 
> Looks sensible but your patch doesn't add a user for it so what is it
> needed for ?

I implement accessor for special equipment (acessing fiscal information)
which uses custom protocol over LAPB. As it is being implemented,
I actually wanted to know if this approach for using LAPB is good enough
for mainline submission, as I want to have kernel part to be in mainline.
I think I will have the rest of patches ready within two weeks.

All the best,
S.

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