From owner-freebsd-current@FreeBSD.ORG Wed Oct 31 08:17:00 2007 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id ACCD816A46C; Wed, 31 Oct 2007 08:17:00 +0000 (UTC) (envelope-from jdc@parodius.com) Received: from mx01.sc1.parodius.com (mx01.sc1.parodius.com [72.20.106.3]) by mx1.freebsd.org (Postfix) with ESMTP id 8945313C4A6; Wed, 31 Oct 2007 08:17:00 +0000 (UTC) (envelope-from jdc@parodius.com) Received: by mx01.sc1.parodius.com (Postfix, from userid 1000) id 05B631CC078; Wed, 31 Oct 2007 01:16:39 -0700 (PDT) Date: Wed, 31 Oct 2007 01:16:39 -0700 From: Jeremy Chadwick To: Scott Long Message-ID: <20071031081638.GA13564@eos.sc1.parodius.com> References: <2a41acea0710291045m6f1d2acw78c26a455ea3894d@mail.gmail.com> <2a41acea0710301001k60442b26uae186209ac484780@mail.gmail.com> <4727F13F.1030607@samsco.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <4727F13F.1030607@samsco.org> User-Agent: Mutt/1.5.16 (2007-06-09) Cc: "gnn@freebsd.org" , FreeBSD Current , FreeBSD Stable List , Jack Vogel , "freebsd-net@freebsd.org" Subject: Re: RFC: Evolution of the em driver 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: Wed, 31 Oct 2007 08:17:00 -0000 On Tue, Oct 30, 2007 at 09:06:39PM -0600, Scott Long wrote: > There are too many examples to name in every OS of drivers that have > tried in vain to support diverging hardware evolutionary paths. if_dc > and if_bge are great (or horrible, depending on your perspective) > examples of this in FreeBSD. My vote is to nip the madness in the bud > on if_em and have two (or more drivers) that support their hardware > families well instead of one driver that supports multiple families > marginally. For what it's worth, I agree with Scott. I'd rather see a new and separate driver (presumably igb(4)) than a "hacked up" em(4) driver trying to handle tons of IC revisions. A good example of the insanity the latter causes is nve(4) vs. nfe(4). :-) -- | Jeremy Chadwick jdc at parodius.com | | Parodius Networking http://www.parodius.com/ | | UNIX Systems Administrator Mountain View, CA, USA | | Making life hard for others since 1977. PGP: 4BD6C0CB |