From mboxrd@z Thu Jan 1 00:00:00 1970 From: Theodore Ts'o Subject: Re: [PATCH] n_tty: Remove LINEMODE support Date: Sun, 18 Jan 2015 23:55:01 -0500 Message-ID: <20150119045501.GB29596@thunk.org> References: <1421616632-4077-1-git-send-email-peter@hurleysoftware.com> <54BC2F0A.8040404@symas.com> <54BC3236.1030004@hurleysoftware.com> <54BC3730.706@symas.com> <54BC3C89.3070006@hurleysoftware.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: <54BC3C89.3070006@hurleysoftware.com> Sender: linux-kernel-owner@vger.kernel.org To: Peter Hurley Cc: Howard Chu , Greg Kroah-Hartman , One Thousand Gnomes , Jiri Slaby , linux-kernel@vger.kernel.org, linux-serial@vger.kernel.org List-Id: linux-serial@vger.kernel.org Line mode goes back to BSD 4.x days, and it's useful over high latency links --- i.e., the sort of thing that you get with stone age cellular data networks (i.e., the sort of thing that we still have the US), amateur packet radio links, etc. So it's certianly a nice to have, if someone is willing to support it and the maintenance burden on the rest of the tty stack isn't too onerous. OTOH, one could argue that with something like mosh, if you can get that working across a particular firewall, it solves the probably much more portably without requiring kernel hacks. Mosh couldn't be used on amateur packet links, since it uses encryption, which is verboten for ham radio. But for other high latency links, mosh does work fairly well, without requiring EXTPROC in the kernel. - Ted