linux-kernel - Re: [PATCH net-next 06/12] mptcp: pm: define struct mptcp_pm

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Message-ID: <20250318172337.GK688833@kernel.org>
Date: Tue, 18 Mar 2025 17:23:37 +0000
From: Simon Horman <horms@...nel.org>
To: "Matthieu Baerts (NGI0)" <matttbe@...nel.org>
Cc: mptcp@...ts.linux.dev, Mat Martineau <martineau@...nel.org>,
	Geliang Tang <geliang@...nel.org>,
	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
	Jonathan Corbet <corbet@....net>, Shuah Khan <shuah@...nel.org>,
	netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-doc@...r.kernel.org, linux-kselftest@...r.kernel.org
Subject: Re: [PATCH net-next 06/12] mptcp: pm: define struct mptcp_pm_ops

On Thu, Mar 13, 2025 at 11:20:55AM +0100, Matthieu Baerts (NGI0) wrote:
> From: Geliang Tang <tanggeliang@...inos.cn>
> 
> In order to allow users to develop their own BPF-based path manager,
> this patch defines a struct ops "mptcp_pm_ops" for an MPTCP path
> manager, which contains a set of interfaces. Currently only init()
> and release() interfaces are included, subsequent patches will add
> others step by step.
> 
> Add a set of functions to register, unregister, find and validate a
> given path manager struct ops.
> 
> "list" is used to add this path manager to mptcp_pm_list list when
> it is registered. "name" is used to identify this path manager.
> mptcp_pm_find() uses "name" to find a path manager on the list.
> 
> mptcp_pm_unregister is not used in this set, but will be invoked in
> .unreg of struct bpf_struct_ops. mptcp_pm_validate() will be invoked
> in .validate of struct bpf_struct_ops. That's why they are exported.
> 
> Signed-off-by: Geliang Tang <tanggeliang@...inos.cn>
> Reviewed-by: Matthieu Baerts (NGI0) <matttbe@...nel.org>
> Signed-off-by: Matthieu Baerts (NGI0) <matttbe@...nel.org>

Reviewed-by: Simon Horman <horms@...nel.org>