linux-kernel - Re: [PATCH 1/1] char nvtty: Network Virtual Terminal support

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Message-ID: <20110110134955.05d0d8a1@lxorguk.ukuu.org.uk>
Date:	Mon, 10 Jan 2011 13:49:55 +0000
From:	Alan Cox <alan@...rguk.ukuu.org.uk>
To:	Rodolfo Giometti <giometti@...eenne.com>
Cc:	linux-kernel@...r.kernel.org, Russell Coker <russell@...er.com.au>,
	Greg Kroah-Hartman <gregkh@...e.de>,
	Randy Dunlap <randy.dunlap@...cle.com>
Subject: Re: [PATCH 1/1] char nvtty: Network Virtual Terminal support

> If I well understood the pty/tty pair modem lines they can be used to
> send receive serial data but they cannot be used to set the serial
> parameters since the slave doesn't send to the master the serial
> settings a userland application does on it, doesn't it?

Currently this is the case.

> > Otherwise its a very nice implementation of something I don't think we
> > should have implemented in the kernel.
> 
> Thanks, but I still don't understand how I can set the serial settings
> without a specific tty driver and just using the pty/tty pair modem
> lines... :'(

I'd rather see either tweaks to the pty/tty code to support this and
modem line setting, or something like your nvt which can be used for
arbitary protocols rather than being tied to the nvt telnet protocol
limits.

Alan
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