From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.2 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 4D30EC2D0CD for ; Wed, 18 Dec 2019 15:30:12 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 2D172206CB for ; Wed, 18 Dec 2019 15:30:12 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727181AbfLRPaJ (ORCPT ); Wed, 18 Dec 2019 10:30:09 -0500 Received: from mga05.intel.com ([192.55.52.43]:46393 "EHLO mga05.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726913AbfLRPaJ (ORCPT ); Wed, 18 Dec 2019 10:30:09 -0500 X-Amp-Result: UNKNOWN X-Amp-Original-Verdict: FILE UNKNOWN X-Amp-File-Uploaded: False Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by fmsmga105.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 18 Dec 2019 07:30:07 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.69,330,1571727600"; d="scan'208";a="222031283" Received: from lahna.fi.intel.com (HELO lahna) ([10.237.72.163]) by fmsmga001.fm.intel.com with SMTP; 18 Dec 2019 07:30:03 -0800 Received: by lahna (sSMTP sendmail emulation); Wed, 18 Dec 2019 17:30:02 +0200 Date: Wed, 18 Dec 2019 17:30:02 +0200 From: Mika Westerberg To: Greg Kroah-Hartman Cc: linux-usb@vger.kernel.org, Andreas Noever , Michael Jamet , Yehezkel Bernat , Rajmohan Mani , Nicholas Johnson , Lukas Wunner , Alan Stern , Mario.Limonciello@dell.com, Anthony Wong , Oliver Neukum , Christian Kellner , "David S . Miller" , netdev@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v2 0/9] thunderbolt: Add support for USB4 Message-ID: <20191218153002.GY2913417@lahna.fi.intel.com> References: <20191217123345.31850-1-mika.westerberg@linux.intel.com> <20191218144316.GA321016@kroah.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20191218144316.GA321016@kroah.com> Organization: Intel Finland Oy - BIC 0357606-4 - Westendinkatu 7, 02160 Espoo User-Agent: Mutt/1.12.1 (2019-06-15) Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org On Wed, Dec 18, 2019 at 03:43:16PM +0100, Greg Kroah-Hartman wrote: > On Tue, Dec 17, 2019 at 03:33:36PM +0300, Mika Westerberg wrote: > > Hi all, > > > > USB4 is the public specification of Thunderbolt 3 protocol and can be > > downloaded here: > > > > https://www.usb.org/sites/default/files/USB4%20Specification_1.zip > > > > USB4 is about tunneling different protocols over a single cable (in the > > same way as Thunderbolt). The current USB4 spec supports PCIe, Display Port > > and USB 3.x, and also software based protocols such as networking between > > domains (hosts). > > > > So far PCs have been using firmware based Connection Manager (FW CM, ICM) > > and Apple systems have been using software based one (SW CM, ECM). A > > Connection Manager is the entity that handles creation of different tunnel > > types through the USB4 (and Thunderbolt) fabric. With USB4 the plan is to > > have software based Connection Manager everywhere but some early systems > > will come with firmware based connection manager. > > > > Current Linux Thunderbolt driver supports both "modes" and can detect which > > one to use dynamically. > > > > This series extends the Linux Thunderbolt driver to support USB4 compliant > > hosts and devices (this applies to both firmware and software based > > connection managers). USB4 Features enabled by this series include: > > > > - PCIe tunneling > > - Display Port tunneling > > - USB 3.x tunneling > > - P2P networking (implemented in drivers/net/thunderbolt.c) > > - Host and device NVM firmware upgrade > > > > Power management support is still work in progress. It will be submitted > > later on once properly tested. > > > > The previous versions of the series can be seen here: > > > > v1: https://lore.kernel.org/linux-usb/20191023112154.64235-1-mika.westerberg@linux.intel.com/ > > RFC: https://lore.kernel.org/lkml/20191001113830.13028-1-mika.westerberg@linux.intel.com/ > > > > Changes from v1: > > > > * Rebased on top of v5.5-rc2. > > * Add a new patch to populate PG field in hotplug ack packet. > > * Rename the networking driver Kconfig symbol to CONFIG_USB4_NET to > > follow the driver itself (CONFIG_USB4). > > At a quick glance, this looks nice and sane, good job. I've taken all > of these into my tree, let's see if 0-day has any problems with it :) Thanks :)