From mboxrd@z Thu Jan  1 00:00:00 1970
From: Stephen Hemminger <stephen@networkplumber.org>
Subject: Re: [PATCH 2/3] usertools: add hv_uio_setup script
Date: Thu, 5 Apr 2018 15:43:08 -0700
Message-ID: <20180405154308.00a5a64a@xeon-e3>
References: <20180405191305.26813-1-sthemmin@microsoft.com>
 <1607753.vleKbttEpa@xps>
 <20180405210734.GA85168@bricha3-MOBL.ger.corp.intel.com>
 <1792191.Hreas2QKXW@xps>
Mime-Version: 1.0
Content-Type: text/plain; charset=US-ASCII
Content-Transfer-Encoding: 7bit
Cc: Bruce Richardson <bruce.richardson@intel.com>, Stephen Hemminger
 <sthemmin@microsoft.com>, dev@dpdk.org
To: Thomas Monjalon <thomas@monjalon.net>
Return-path: <dev-bounces@dpdk.org>
Received: from mail-pl0-f66.google.com (mail-pl0-f66.google.com
 [209.85.160.66]) by dpdk.org (Postfix) with ESMTP id AB5511CDEB
 for <dev@dpdk.org>; Fri,  6 Apr 2018 00:43:10 +0200 (CEST)
Received: by mail-pl0-f66.google.com with SMTP id v5-v6so19373020plo.4
 for <dev@dpdk.org>; Thu, 05 Apr 2018 15:43:10 -0700 (PDT)
In-Reply-To: <1792191.Hreas2QKXW@xps>
List-Id: DPDK patches and discussions <dev.dpdk.org>
List-Unsubscribe: <https://dpdk.org/ml/options/dev>,
 <mailto:dev-request@dpdk.org?subject=unsubscribe>
List-Archive: <http://dpdk.org/ml/archives/dev/>
List-Post: <mailto:dev@dpdk.org>
List-Help: <mailto:dev-request@dpdk.org?subject=help>
List-Subscribe: <https://dpdk.org/ml/listinfo/dev>,
 <mailto:dev-request@dpdk.org?subject=subscribe>
Errors-To: dev-bounces@dpdk.org
Sender: "dev" <dev-bounces@dpdk.org>

On Thu, 05 Apr 2018 23:10:33 +0200
Thomas Monjalon <thomas@monjalon.net> wrote:

> 05/04/2018 23:07, Bruce Richardson:
> > On Thu, Apr 05, 2018 at 10:43:39PM +0200, Thomas Monjalon wrote:  
> > > 05/04/2018 21:13, Stephen Hemminger:  
> > > > Small script to rebind netvsc kernel device to Hyper-V
> > > > networking PMD. It could be integrated in dpdk-bind, but dpdk-bind
> > > > is focused on PCI, and that would get messy.
> > > > 
> > > > Eventually, this functionality will be built into netvsc driver
> > > > (see vdev_netvsc as an example).  
> > > 
> > > I believe we should avoid creating such script.
> > > The direction to go, for hotplug, is to remove dpdk-devbind.py,
> > > and implement kernel binding in PMDs (with EAL helpers).
> > >  
> > I'm not convinced at all that that is the direction to go. I instead would
> > prefer to see all binding happen outside DPDK. I believe having udev or
> > similar manage bindings, set up via e.g driverctl[1], is a far better path.  
> 
> This is a system admin tool, and only for Linux.
> Having the binding logic inside DPDK, allows the application to control
> how hotplug behave.
> 
> 

What about using driverctl?
That solution would work for both PCI and VMBUS, but not sure how widely
adopted it is by distributions.