On 2018-12-11 4:17 PM, Parav Pandit wrote:
-----Original Message-----
From: linux-rdma-owner@xxxxxxxxxxxxxxx <linux-rdma-
owner@xxxxxxxxxxxxxxx> On Behalf Of Mark Bloch
Sent: Tuesday, December 11, 2018 1:57 PM
To: Jarod Wilson <jarod@xxxxxxxxxx>; linux-rdma@xxxxxxxxxxxxxxx
Cc: Doug Ledford <dledford@xxxxxxxxxx>; Honggang Li <honli@xxxxxxxxxx>
Subject: Re: [PATCH rdma-core] Add Red Hat's ibdev2netdev helper
On 12/11/18 11:46 AM, Jarod Wilson wrote:
This is a helper script that Red Hat had previously been including in
it's ibutils package, which is no more, with the retirement of ibutils
and
ibutils2 being proprietary to Mellanox now. This script still has use,
and needs a better home, so we'd like to add it to rdma-core's redhat/
directory -- if not somewhere more generic, should other distros wish
to make use of it as well.
Why not tell users to use rdma tool (iproute2)?
Because rdma tool currently doesn’t show corresponding IPoIB upper netdevice(s) of for the IB device.
For a given rdma device there can be multiple netdevices exist for RoCE ports.
Rdma tool (and ibdev2netdev) doesn't show them.
The scope of ibdev2netdev currently is wider than what rdma tool shows.
So yes, its good recommendation to RoCE and representor users.
We've actually had some folks notice it was missing from RHEL-8.0 beta,
and explicitly request it, because they have various infrastructure that
was expecting it to be there. It's just a shell script, and could be
updated along the way to use the rdma tool from iproute2, or become
completely obsolete at some point. But we're definitely some demand to
keep it around for the moment.
--
Jarod Wilson
jarod@xxxxxxxxxx
