From mboxrd@z Thu Jan 1 00:00:00 1970 From: Yuval Shaia Subject: Re: [PATCH 2/3] IB/ipoib: Stop using dev_id to expose port numbers Date: Mon, 13 Aug 2018 15:40:20 +0300 Message-ID: <20180813124018.GA6122@lap1> References: <20180813114224.7065-1-ar@cs.msu.ru> <20180813114224.7065-3-ar@cs.msu.ru> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: linux-rdma@vger.kernel.org, Doug Ledford , Jason Gunthorpe , netdev@vger.kernel.org To: Arseny Maslennikov Return-path: Received: from aserp2130.oracle.com ([141.146.126.79]:35032 "EHLO aserp2130.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728509AbeHMPWw (ORCPT ); Mon, 13 Aug 2018 11:22:52 -0400 Content-Disposition: inline In-Reply-To: <20180813114224.7065-3-ar@cs.msu.ru> Sender: netdev-owner@vger.kernel.org List-ID: On Mon, Aug 13, 2018 at 02:42:23PM +0300, Arseny Maslennikov wrote: > Some InfiniBand network devices have multiple ports on the same PCI > function. Prior to this the kernel erroneously used the `dev_id' sysfs > field of those network interfaces to convey the port number to userspace. > > `dev_id' is currently reserved for distinguishing stacked ifaces > (e.g: VLANs) with the same hardware address as their parent device. > > Similar fixes to net/mlx4_en and many other drivers, which started > exporting this information through `dev_id' before 3.15, were accepted > into the kernel 4 years ago. > See 76a066f2a2a0268b565459c417b59724b5a3197b, commit message: > `net/mlx4_en: Expose port number through sysfs'. > > I would be OK with this commit not being backported to stable, since > it might break admin-supplied udev rules and the likes. > > Signed-off-by: Arseny Maslennikov > --- > drivers/infiniband/ulp/ipoib/ipoib_main.c | 1 - > 1 file changed, 1 deletion(-) > > diff --git a/drivers/infiniband/ulp/ipoib/ipoib_main.c b/drivers/infiniband/ulp/ipoib/ipoib_main.c > index 6eb0594fffec..f64535038147 100644 > --- a/drivers/infiniband/ulp/ipoib/ipoib_main.c > +++ b/drivers/infiniband/ulp/ipoib/ipoib_main.c > @@ -2252,7 +2252,6 @@ static struct net_device *ipoib_add_port(const char *format, > } > > SET_NETDEV_DEV(priv->dev, hca->dev.parent); > - priv->dev->dev_id = port - 1; Correct me if i'm wrong here but besides some changes in commit message looks like patch 1/3 is the same as 2/3, isn't it? Yuval > priv->dev->dev_port = port - 1; > > result = ib_query_port(hca, port, &attr); > -- > 2.18.0 >