netdev - Shall we add some note info for tcp_min_snd

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Message-ID: <5D1C68C8.6020408@windriver.com>
Date:   Wed, 3 Jul 2019 16:35:20 +0800
From:   ZhangXiao <xiao.zhang@...driver.com>
To:     <edumazet@...gle.com>, <davem@...emloft.net>
CC:     <netdev@...r.kernel.org>
Subject: Shall we add some note info for tcp_min_snd_mss?

Hi David & Eric,

Commit 5f3e2bf0 (tcp: add tcp_min_snd_mss sysctl) add a new interface to
adjust network. While if this variable been set too large, for example
larger then (MTU - 40), the net link maybe damaged. So, how about adding
some warning messages for the operator/administrator? In document, or in
source code.

Thanks
Xiao