From owner-freebsd-current@FreeBSD.ORG Mon May 26 13:42:41 2008 Return-Path: Delivered-To: current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id E37D81065683; Mon, 26 May 2008 13:42:41 +0000 (UTC) (envelope-from rwatson@FreeBSD.org) Received: from cyrus.watson.org (cyrus.watson.org [209.31.154.42]) by mx1.freebsd.org (Postfix) with ESMTP id B1B808FC16; Mon, 26 May 2008 13:42:41 +0000 (UTC) (envelope-from rwatson@FreeBSD.org) Received: from fledge.watson.org (fledge.watson.org [209.31.154.41]) by cyrus.watson.org (Postfix) with ESMTP id 3B09046B49; Mon, 26 May 2008 09:42:41 -0400 (EDT) Date: Mon, 26 May 2008 14:42:41 +0100 (BST) From: Robert Watson X-X-Sender: robert@fledge.watson.org To: Ade Lovett In-Reply-To: <5D4AF8D7-88A7-4197-A0FE-7CA992EE5F96@FreeBSD.org> Message-ID: <20080526142931.Q26343@fledge.watson.org> References: <20080524111715.T64552@fledge.watson.org> <1211640498.1510.8.camel@localhost> <20080524165519.K9809@fledge.watson.org> <20080525105726.O39741@fledge.watson.org> <5D4AF8D7-88A7-4197-A0FE-7CA992EE5F96@FreeBSD.org> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed Cc: arch@freebsd.org, current@freebsd.org, net@freebsd.org Subject: Re: HEAD UP: non-MPSAFE network drivers to be disabled (was: 8.0 network stack MPsafety goals (fwd)) X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 26 May 2008 13:42:42 -0000 On Mon, 26 May 2008, Ade Lovett wrote: > On May 25, 2008, at 02:58 , Robert Watson wrote: > >> While I'd be quite supportive of something along these lines, I think it >> probably is more work to port SLIP to userspace than to hack the current >> code a little bit to be MPSAFE, assuming it remains supported with the >> revised tty code. SLIP is a fairly straight-forward piece of code, as long >> as you don't try to understand the line discipline stuff. :-) > > Given that this is (a) 2008 and (b) 8.x we're talking about, are there > really that many consumers of SLIP to warrant it being carried forward at > all? > > Seems to me that it would not be unreasonable to give a heads up that the > current kernel-space ppp/slip (and, for that matter, plip) drivers are going > away some time before 8.0-RELEASE, pppd is more than adequately replaced by > userland-ppp or netgraph, and if there's some critical need by someone to > have SLIP and/or PLIP, then they'll need to step up to the plate to do the > necessary re-implementation. The thread you're replying began with precisely such a heads up. :-) Robert N M Watson Computer Laboratory University of Cambridge