From mboxrd@z Thu Jan  1 00:00:00 1970
From: "Charles (Chas) Williams" <3chas3@gmail.com>
Subject: Re: [PATCH v2] devargs: add blacklisting by linux
 interface name
Date: Thu, 05 Nov 2015 11:39:04 -0500
Message-ID: <1446741544.1777.3.camel@gmail.com>
References: <1443798007-20122-1-git-send-email-3chas3@gmail.com>
 <561CFDDB.90601@6wind.com> <1444830094.3494.59.camel@gmail.com>
 <7145730.ihAL5VqqiH@xps13>
Mime-Version: 1.0
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: 7bit
Cc: dev@dpdk.org
To: Thomas Monjalon <thomas.monjalon@6wind.com>
Return-path: <dev-bounces@dpdk.org>
Received: from mail-qk0-f175.google.com (mail-qk0-f175.google.com
 [209.85.220.175]) by dpdk.org (Postfix) with ESMTP id 452598DAC
 for <dev@dpdk.org>; Thu,  5 Nov 2015 17:39:06 +0100 (CET)
Received: by qkcn129 with SMTP id n129so35119842qkc.1
 for <dev@dpdk.org>; Thu, 05 Nov 2015 08:39:05 -0800 (PST)
In-Reply-To: <7145730.ihAL5VqqiH@xps13>
List-Id: patches and discussions about DPDK <dev.dpdk.org>
List-Unsubscribe: <http://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: <http://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 Wed, 2015-11-04 at 23:40 +0100, Thomas Monjalon wrote:
> 2015-10-14 09:41, Charles  Williams:
> > On Tue, 2015-10-13 at 14:49 +0200, Olivier MATZ wrote:
> > > For PCI devices that have several interfaces (I think it's the case for
> > > some Mellanox boards), maybe we should not store the interface name?
> > 
> > I am not sure what you mean here.  If a device has multiple ethernet
> > interfaces, then it should a have seperate PCI device address space for
> > each interface (I dont know of any DPDK drivers that don't make this
> > assumption as well).
> 
> mlx4 and cxgbe?

OK, I see now.  I don't know of a way to tell if a device has multiple
ports just from the pci vendor/device id without maintaining some
sort of table.

Do these devices have multiple interfaces listed in their
/sys/devices/.../net diretory?  If so, matching one of the listed
interfaces can just blacklist the whole device similar to blacklisting
by the device id.