netdev - Re: [PATCH v9 0/8] thunderbolt: Introducing Thunderbolt(TM) Networking

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Message-ID: <20161115105920.GH6167@kw.sim.vm.gnt>
Date:   Tue, 15 Nov 2016 11:59:21 +0100
From:   Simon Guinot <simon.guinot@...uanux.org>
To:     "Levy, Amir (Jer)" <amir.jer.levy@...el.com>
Cc:     "gregkh@...uxfoundation.org" <gregkh@...uxfoundation.org>,
        "andreas.noever@...il.com" <andreas.noever@...il.com>,
        "bhelgaas@...gle.com" <bhelgaas@...gle.com>,
        "corbet@....net" <corbet@....net>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-pci@...r.kernel.org" <linux-pci@...r.kernel.org>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "linux-doc@...r.kernel.org" <linux-doc@...r.kernel.org>,
        "mario_limonciello@...l.com" <mario_limonciello@...l.com>,
        thunderbolt-linux <thunderbolt-linux@...el.com>,
        "Westerberg, Mika" <mika.westerberg@...el.com>,
        "Winkler, Tomas" <tomas.winkler@...el.com>,
        "Zhang, Xiong Y" <xiong.y.zhang@...el.com>,
        "Jamet, Michael" <michael.jamet@...el.com>,
        remi.rerolle@...gate.com
Subject: Re: [PATCH v9 0/8] thunderbolt: Introducing Thunderbolt(TM)
 Networking

On Wed, Nov 09, 2016 at 03:42:53PM +0000, Levy, Amir (Jer) wrote:
> On Wed, Nov 9 2016, 04:36 PM, Simon Guinot wrote:
> > On Wed, Nov 09, 2016 at 04:20:00PM +0200, Amir Levy wrote:
> > > This driver enables Thunderbolt Networking on non-Apple platforms 
> > > running Linux.
> > >
> > > Thunderbolt Networking provides peer-to-peer connections to transfer 
> > > files between computers, perform PC migrations, and/or set up small 
> > > workgroups with shared storage.
> > >
> > > This is a virtual connection that emulates an Ethernet adapter that 
> > > enables Ethernet networking with the benefit of Thunderbolt 
> > > superfast medium capability.
> > >
> > > Thunderbolt Networking enables two hosts and several devices that 
> > > have a Thunderbolt controller to be connected together in a linear 
> > > (Daisy
> > > chain) series from a single port.
> > >
> > > Thunderbolt Networking for Linux is compatible with Thunderbolt 
> > > Networking on systems running macOS or Windows and also supports 
> > > Thunderbolt generation 2 and 3 controllers.
> > >
> > > Note that all pre-existing Thunderbolt generation 3 features, such 
> > > as USB, Display and other Thunderbolt device connectivity will 
> > > continue to function exactly as they did prior to enabling Thunderbolt Networking.
> > >
> > > Code and Software Specifications:
> > > This kernel code creates a virtual ethernet device for computer to 
> > > computer communication over a Thunderbolt cable.
> > > The new driver is a separate driver to the existing Thunderbolt driver.
> > > It is designed to work on systems running Linux that interface with 
> > > Intel Connection Manager (ICM) firmware based Thunderbolt 
> > > controllers that support Thunderbolt Networking.
> > > The kernel code operates in coordination with the Thunderbolt user- 
> > > space daemon to implement full Thunderbolt networking functionality.
> > >
> > > Hardware Specifications:
> > > Thunderbolt Hardware specs have not yet been published but are used 
> > > where necessary for register definitions.
> > 
> > Hi Amir,
> > 
> > I have an ASUS "All Series/Z87-DELUXE/QUAD" motherboard with a 
> > Thunderbolt 2 "Falcon Ridge" chipset (device ID 156d).
> > 
> > Is the thunderbolt-icm driver supposed to work with this chipset ?
> > 
> 
> Yes, the thunderbolt-icm supports Falcon Ridge, device ID 156c.
> 156d is the bridge - http://lxr.free-electrons.com/source/include/linux/pci_ids.h#L2619
> 
> > I have installed both a 4.8.6 Linux kernel (patched with your v9
> > series) and the thunderbolt-software-daemon (27 october release) 
> > inside a Debian system (Jessie).
> > 
> > If I connect the ASUS motherboard with a MacBook Pro (Thunderbolt 2, 
> > device ID 156c), I can see that the thunderbolt-icm driver is loaded 
> > and that the thunderbolt-software-daemon is well started. But the 
> > Ethernet interface is not created.
> > 
> > I have attached to this email the syslog file. There is the logs from 
> > both the kernel and the daemon inside. Note that the daemon logs are 
> > everything but clear about what could be the issue. Maybe I missed 
> > some kind of configuration ? But I failed to find any valuable 
> > information about configuring the driver and/or the daemon in the various documentation files.
> > 
> > Please, can you provide some guidance ? I'd really like to test your 
> > patch series.
> 
> First, thank you very much for willing to test it.
> Thunderbolt Networking support was added during Falcon Ridge, in the latest FR images.
> Do you know which Thunderbolt image version you have on your system?
> Currently I submitted only Thunderbolt Networking feature in Linux, and we plan to add
> more features like reading the image version and updating the image.
> If you don't know the image version, the only thing I can suggest is to load windows, install thunderbolt SW
> and check in the Thunderbolt application the image version.
> To know if image update is needed, you can check - https://thunderbolttechnology.net/updates

Hi Amir,

From the Windows Thunderbolt software, I can read 13.00 for the firmware
version. And from https://thunderbolttechnology.net/updates, I can see
that there is no update available for my ASUS motherboard.

Am I good to go ?

BTW, it is quite a shame that the Thunderbolt firmware version can't be
read from Linux.

Simon

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