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Date:   Sat, 30 Apr 2022 01:00:14 +0000
To:     Mat Martineau <>
Subject: Re: [PATCH net-next 0/6] mptcp: Path manager mode selection


This series was applied to netdev/net-next.git (master)
by Jakub Kicinski <>:

On Wed, 27 Apr 2022 15:49:56 -0700 you wrote:
> MPTCP already has an in-kernel path manager (PM) to add and remove TCP
> subflows associated with a given MPTCP connection. This in-kernel PM has
> been designed to handle typical server-side use cases, but is not very
> flexible or configurable for client devices that may have more
> complicated policies to implement.
> This patch series from the MPTCP tree is the first step toward adding a
> generic-netlink-based API for MPTCP path management, which a privileged
> userspace daemon will be able to use to control subflow
> establishment. These patches add a per-namespace sysctl to select the
> default PM type (in-kernel or userspace) for new MPTCP sockets. New
> self-tests confirm expected behavior when userspace PM is selected but
> there is no daemon available to handle existing MPTCP PM events.
> [...]

Here is the summary with links:
  - [net-next,1/6] mptcp: Remove redundant assignments in path manager init
  - [net-next,2/6] mptcp: Add a member to mptcp_pm_data to track kernel vs userspace mode
  - [net-next,3/6] mptcp: Bypass kernel PM when userspace PM is enabled
  - [net-next,4/6] mptcp: Make kernel path manager check for userspace-managed sockets
  - [net-next,5/6] mptcp: Add a per-namespace sysctl to set the default path manager type
  - [net-next,6/6] selftests: mptcp: Add tests for userspace PM type

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