From owner-freebsd-drivers@freebsd.org Mon Apr 11 20:01:20 2016 Return-Path: Delivered-To: freebsd-drivers@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 7E105B0C896 for ; Mon, 11 Apr 2016 20:01:20 +0000 (UTC) (envelope-from navdeep@chelsio.com) Received: from stargate.chelsio.com (stargate.chelsio.com [12.32.117.8]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 68942127D; Mon, 11 Apr 2016 20:01:20 +0000 (UTC) (envelope-from navdeep@chelsio.com) Received: from nice.asicdesigners.com (nice.asicdesigners.com [10.192.160.7]) by stargate.chelsio.com (8.13.8/8.13.8) with ESMTP id u3BK1Epc018287; Mon, 11 Apr 2016 13:01:19 -0700 Received: from [10.192.166.0] (10.192.166.0) by nice.asicdesigners.com (10.192.160.7) with Microsoft SMTP Server id 14.3.123.3; Mon, 11 Apr 2016 13:01:13 -0700 Subject: Re: NVMe over fabrics support in FreeBSD To: Jim Harris , Meny Yossefi References: CC: "hselasky@freebsd.org" , "info@freebsdfoundation.org" , Oded Shanoon , Hans Petter Selasky , "freebsd-drivers@freebsd.org" , Oren Duer , Warner Losh , Max Gurtovoy , "trasz@FreeBSD.org" From: Navdeep Parhar Message-ID: <570C0289.6070707@chelsio.com> Date: Mon, 11 Apr 2016 13:01:13 -0700 User-Agent: Mozilla/5.0 (X11; FreeBSD amd64; rv:38.0) Gecko/20100101 Thunderbird/38.7.1 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset="windows-1252" Content-Transfer-Encoding: 7bit X-Originating-IP: [10.192.166.0] X-Mailman-Approved-At: Mon, 11 Apr 2016 20:18:12 +0000 X-BeenThere: freebsd-drivers@freebsd.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: Writing device drivers for FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 11 Apr 2016 20:01:20 -0000 On 04/11/2016 11:01, Jim Harris wrote: > On Mon, Apr 11, 2016 at 7:24 AM, Meny Yossefi wrote: > >> Hi, >> >> As you may be aware, in the last year or so a group of companies (Mellanox >> included) are defining the NVMe-over-fabric spec, and also developing the >> Linux drivers implementation (both initiator and target). >> > > Hi Meny, > > The spec is about to be finalized (next Q), and with that the code >> developed will become open source and available, under the GPL license. >> >> What are FreeBSD plans to support NVMe-over-fabrics? >> > > I am not aware of anyone working on NVMe-over-fabrics initiator support. > I've copied Warner Losh (imp@) who has also been doing some work on nvme(4) > in case he is aware of something going on here. > > For NVMe-over-fabrics target support, we at Intel are working on an SPDK > userspace NVMe-over-fabrics target that should work on FreeBSD. I am not > aware of any in-tree FreeBSD NVMe-over-fabrics target work going on however. > > >> Is there a parallel effort happening or planned to happen as soon as the >> spec becomes available? >> Is there a plan/facility to allow the GPL Linux code ported to FreeBSD? >> > > Not really. I think we would need the Linux code relicensed to BSD (or > dual GPL/BSD) to allow porting to FreeBSD. +1. We (Chelsio) have a working NVMe over fabrics implementation as well and would be interested in getting it to run on FreeBSD. Regards, Navdeep