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Date: Tue, 27 May 2008 16:19:02 +0100
From: "Bruce M. Simpson" <bms@FreeBSD.org>
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To: Ed Schouten <ed@80386.nl>
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Cc: current@FreeBSD.org, arch@FreeBSD.org,
	Poul-Henning Kamp <phk@phk.freebsd.dk>,
	Robert Watson <rwatson@FreeBSD.org>,
	Ade Lovett <ade@FreeBSD.org>, net@FreeBSD.org
Subject: Re: HEAD UP: non-MPSAFE network drivers to be disabled (was: 8.0
 network stack MPsafety goals (fwd))
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Ed Schouten wrote:
>>> With the word `should' I meant that it would still be possible to
>>> implement multiple line disciplines with the mpsafetty code. But I
>>> really think line disciplines should go.
>>>       
>> No, don't bother.  Remove the entire "abstraction" of linedisciplines.
>>     
>
> Your wish is my command.
>   

Like Julian and Robert said, please don't break Netgraph.

It still needs to hook into tty at a very low level; and the components 
such as Bluetooth which can use ttys for low level stream processing, 
are built on Netgraph.

Both SLIP and PPP can be built using Netgraph.

Other than that, line disciplines can go away.