netdev - Re: [PATCH v2] drivers/net/wan/x25

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Date:   Tue, 21 Jul 2020 18:30:22 -0700 (PDT)
From:   David Miller <davem@...emloft.net>
To:     xie.he.0141@...il.com
Cc:     kuba@...nel.org, edumazet@...gle.com, ms@....tdt.de,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-x25@...r.kernel.org
Subject: Re: [PATCH v2] drivers/net/wan/x25_asy: Fix to make it work

From: Xie He <xie.he.0141@...il.com>
Date: Thu, 16 Jul 2020 16:44:33 -0700

> This driver is not working because of problems of its receiving code.
> This patch fixes it to make it work.
> 
> When the driver receives an LAPB frame, it should first pass the frame
> to the LAPB module to process. After processing, the LAPB module passes
> the data (the packet) back to the driver, the driver should then add a
> one-byte pseudo header and pass the data to upper layers.
> 
> The changes to the "x25_asy_bump" function and the
> "x25_asy_data_indication" function are to correctly implement this
> procedure.
> 
> Also, the "x25_asy_unesc" function ignores any frame that is shorter
> than 3 bytes. However the shortest frames are 2-byte long. So we need
> to change it to allow 2-byte frames to pass.
> 
> Cc: Eric Dumazet <edumazet@...gle.com>
> Cc: Martin Schiller <ms@....tdt.de>
> Signed-off-by: Xie He <xie.he.0141@...il.com>

Applied, thank you.