[v2,0/4] thunderbolt: Notify userspace about tunneling events in the domain

Message ID	20250417090426.221773-1-mika.westerberg@linux.intel.com
Headers	show Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.12]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id F0D58227BA2 for <linux-usb@vger.kernel.org>; Thu, 17 Apr 2025 09:04:30 +0000 (UTC) From: Mika Westerberg <mika.westerberg@linux.intel.com> To: linux-usb@vger.kernel.org Cc: Yehezkel Bernat <YehezkelShB@gmail.com>, Michael Jamet <michael.jamet@intel.com>, Lukas Wunner <lukas@wunner.de>, Andreas Noever <andreas.noever@gmail.com>, Alan Borzeszkowski <alan.borzeszkowski@linux.intel.com>, Saranya Gopal <saranya.gopal@intel.com>, Greg KH <gregkh@linuxfoundation.org>, Mika Westerberg <mika.westerberg@linux.intel.com> Subject: [PATCH v2 0/4] thunderbolt: Notify userspace about tunneling events in the domain Date: Thu, 17 Apr 2025 12:04:22 +0300 Message-ID: <20250417090426.221773-1-mika.westerberg@linux.intel.com> Precedence: bulk MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit
Series	thunderbolt: Notify userspace about tunneling events in the domain \| expand [v2,0/4] thunderbolt: Notify userspace about tunneling events in the domain [v2,1/4] thunderbolt: Introduce domain event message handler [v2,2/4] thunderbolt: Notify userspace about software CM tunneling events [v2,3/4] thunderbolt: Notify userspace about firmware CM tunneling events [v2,4/4] Documentation/admin-guide: Document Thunderbolt/USB4 tunneling events

Message ID

20250417090426.221773-1-mika.westerberg@linux.intel.com

Headers

From: Mika Westerberg <mika.westerberg@linux.intel.com>
To: linux-usb@vger.kernel.org
Cc: Yehezkel Bernat <YehezkelShB@gmail.com>,
	Michael Jamet <michael.jamet@intel.com>,
	Lukas Wunner <lukas@wunner.de>,
	Andreas Noever <andreas.noever@gmail.com>,
	Alan Borzeszkowski <alan.borzeszkowski@linux.intel.com>,
	Saranya Gopal <saranya.gopal@intel.com>,
	Greg KH <gregkh@linuxfoundation.org>,
	Mika Westerberg <mika.westerberg@linux.intel.com>
Subject: [PATCH v2 0/4] thunderbolt: Notify userspace about tunneling events
 in the domain
Date: Thu, 17 Apr 2025 12:04:22 +0300
Message-ID: <20250417090426.221773-1-mika.westerberg@linux.intel.com>
Precedence: bulk
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Series

thunderbolt: Notify userspace about tunneling events in the domain | expand

Message

Mika Westerberg April 17, 2025, 9:04 a.m. UTC

Hi all,

This series adds support to sending uevents to userspace about changes in
tunneling such as creation, removal and bandwidth related.  One intented
use-case for this is an upcoming USB-C daemon developed by Saranya that
then notifies user for example if there is not enough bandwidth for
DisplayPort requirements. We also added debug tools [1] support for these
(currently it just updates various screens on event but we are working on
add event log there too).

The Firmware Connection manager side is kind of limited though since there
are not that many notifications we get.

[1] https://github.com/intel/tbtools

Previous version can be found:

  https://lore.kernel.org/linux-usb/20250410125600.3074417-1-mika.westerberg@linux.intel.com/

Changes from the previous version:

  * Add missing SoB.
  * Add documentation to admin-guide/thunderbolt.rst.

Alan Borzeszkowski (4):
  thunderbolt: Introduce domain event message handler
  thunderbolt: Notify userspace about software CM tunneling events
  thunderbolt: Notify userspace about firmware CM tunneling events
  Documentation/admin-guide: Document Thunderbolt/USB4 tunneling events

 Documentation/admin-guide/thunderbolt.rst | 33 ++++++++
 drivers/thunderbolt/domain.c              |  2 +-
 drivers/thunderbolt/icm.c                 | 36 ++++++++-
 drivers/thunderbolt/tb.c                  | 22 +++++-
 drivers/thunderbolt/tb.h                  | 13 ++++
 drivers/thunderbolt/tb_msgs.h             |  1 +
 drivers/thunderbolt/tunnel.c              | 92 +++++++++++++++++++++--
 drivers/thunderbolt/tunnel.h              | 23 ++++++
 8 files changed, 212 insertions(+), 10 deletions(-)