linux-kernel - Re: [PATCH AUTOSEL 5.4 075/130] net/lapb: fix t1 timer handling for LAPB_STATE

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Date:   Wed, 23 Dec 2020 09:01:24 -0800
From:   Xie He <xie.he.0141@...il.com>
To:     Sasha Levin <sashal@...nel.org>
Cc:     linux-kernel@...r.kernel.org, stable@...r.kernel.org,
        Martin Schiller <ms@....tdt.de>,
        Jakub Kicinski <kuba@...nel.org>, linux-x25@...r.kernel.org,
        netdev@...r.kernel.org
Subject: Re: [PATCH AUTOSEL 5.4 075/130] net/lapb: fix t1 timer handling for LAPB_STATE_0

> From: Martin Schiller <ms@....tdt.de>
>
> [ Upstream commit 62480b992ba3fb1d7260b11293aed9d6557831c7 ]
>
> 1. DTE interface changes immediately to LAPB_STATE_1 and start sending
>    SABM(E).
>
> 2. DCE interface sends N2-times DM and changes to LAPB_STATE_1
>    afterwards if there is no response in the meantime.

I don't think this patch is suitable for stable branches. This patch is
part of a patch series that changes the lapb module from "establishing the
L2 connection only when needed by L3", to "establishing the L2 connection
automatically whenever we are able to". This is a behavioral change. It
should be seen as a new feature. It is not a bug fix.