From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 656C7328BE for ; Sat, 7 Oct 2023 21:05:39 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="bQuV424c" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 47B7BC433C7; Sat, 7 Oct 2023 21:05:38 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1696712738; bh=bWm2LNA+W7hZRzJREK7b96wxbOAhsX+fsT6KrYkX4NY=; h=Date:Subject:To:References:From:In-Reply-To:From; b=bQuV424cX/FxBRop9LpVcg1IoILF0FRekBLJVG5xhLx6PKAjdLME6K2QS0nI0ZhmJ jtG4fFM5XSUAUj20uUFILxc4nczTGA6b2H04drgKl0xgYkx1mj5VP9fIal3Yln72Uc 9FDJ3xQLKcwiy+ix4S5FKeCc8dCet96Os2gSkq5ocnHLe5wLinnSOJEKkb1UsrcNuY KYEn/V72xggVdxLHHN7rPkLc9B4XdfjguMzdRecJHoWbX4zTn+BZIp+kIPLvRQcp6T 8UcykpeAdOCJDQ9Cu9cU7Zi+qMgcp47LkKuUlJ7K22P4WSvhKaZNT4JSnrdSnZJqXE t9dsfDpc1rBbQ== Message-ID: <144a2a63-534f-4539-9582-20a3bac2cb4d@kernel.org> Date: Sat, 7 Oct 2023 23:05:37 +0200 Precedence: bulk X-Mailing-List: mptcp@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH mptcp-next v3 19/29] mptcp: add netlink pm addr entry refcount Content-Language: en-GB, fr-BE To: Geliang Tang , mptcp@lists.linux.dev References: <02f4426edd24a150ab523715135a602069244443.1695631132.git.geliang.tang@suse.com> From: Matthieu Baerts Autocrypt: addr=matttbe@kernel.org; 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charset=UTF-8 Content-Transfer-Encoding: 7bit Hi Geliang, On 25/09/2023 10:41, Geliang Tang wrote: > This patch adds netlink PM address entry refcount. Init 'refcont' of > every address entry to 1. And add a new filed 'subflows' in struct > mptcp_pm_addr_entry, inited to 0, to store how many subflows have > been established on this address entry. > > Increase both values in mptcp_pm_create_subflow_or_signal_addr() and > fill_local_addresses_vec(), and decrease the counter 'refcont' in > __mptcp_pm_release_addr_entry() according its 'subflows' value. Please *always* explain WHY this patch is needed. When reading the code, it is not clear to me what you are trying to fix here: with the Netlink PM, the userspace adds and deletes endpoints, not specific subflows. I mean: we don't have the same issue as we have with the userspace PM. Or is there a different issue? Cheers, Matt -- Tessares | Belgium | Hybrid Access Solutions www.tessares.net