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 8AACB21C17E for ; Thu, 9 Jan 2025 15:24:34 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1736436275; cv=none; b=SixnCdJkEnzRVn4xnn72VHYLurbDq6zTtodGDOTY+NMASJgM4hlq4LJxlwBfFFWrICY3RdvPCYoEiPRPl96FmZ+jPZfAMzvcXrvwllM0Iwommar4N9eBEDLy/JFBuZ9YlpkFP2RUM4YawhPHc7BHju4fvo1Kn0dJsa+0kzCUCHk= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1736436275; c=relaxed/simple; bh=4wwVeskGEXBRqwYfQfZJMUP6JP3hQVkSQQGUIfDbS4Y=; h=Message-ID:Date:MIME-Version:Subject:To:References:From: In-Reply-To:Content-Type; b=Reh86x84cwsX6txNpDwLuchfKzPlL81jl9RYkfqHYgjE6D8VazONwhOOvDZKsoaP9y90zJGZPP+jQ+nAIKYFwpvqmzm4g/8KB2ilXPCFecgEvSM8uiAkHFdZykTT0JD+dp+5mYiSLJfoSaeuvMQQs+tihGfvjxCZ7uXue0eW7e0= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=iKT8FKZe; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="iKT8FKZe" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 89E9AC4CED2; Thu, 9 Jan 2025 15:24:33 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1736436274; bh=4wwVeskGEXBRqwYfQfZJMUP6JP3hQVkSQQGUIfDbS4Y=; h=Date:Subject:To:References:From:In-Reply-To:From; b=iKT8FKZeL/lW7H0qeVdaC7STYhaDScFz6vGK9xa+aY/j7om0XxuGaW94UabuXEWe3 gUe5wbIUHHAcmTdmjTGLNvtWV8mKFVBBPy1pogKfVlEWsNmfSOE1wRMvAg21kFs8m0 ipImdRPZnGqQLjgAjdjTdVH0Gi60FRqt9jRpKfg9vL480pvx2XzL+y2fWMthaMBWNJ sx/ni+AI/oF5TSBNaGo/AwDHX03ZJ8n7bQiD/V4qxe9RI6dxq2ZxfmB+wdddQMdeVK TWMulzTgbve4dGIV3FYgdiL9RMv2dlYkAZUDa8nJdggdZ9CNS/sFA3TmZ9GPO30POi L9xGTrsukT7qA== Message-ID: <800dac0f-16d4-4e89-9d94-0fbef2e22e21@kernel.org> Date: Thu, 9 Jan 2025 16:24:32 +0100 Precedence: bulk X-Mailing-List: mptcp@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Beta Subject: Re: [PATCH mptcp-next v8 7/8] mptcp: pm: mark missing address attributes Content-Language: en-GB To: Geliang Tang , mptcp@lists.linux.dev References: <07fcafc9153f0386b0d7340e193bc73f806e7154.1736299989.git.tanggeliang@kylinos.cn> From: Matthieu Baerts Autocrypt: addr=matttbe@kernel.org; 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charset=UTF-8 Content-Transfer-Encoding: 7bit Hi Geliang, On 08/01/2025 02:44, Geliang Tang wrote: > From: "Matthieu Baerts (NGI0)" > > mptcp_pm_parse_entry() will check if the given attribute is defined. If > not, it will return a generic error: "missing address info". > > It might then not be clear for the userspace developer which attribute > is missing, especially when the command takes multiple addresses. > > By using GENL_REQ_ATTR_CHECK(), the userspace will get a hint about > which attribute is missing, making thing clearer. Note that this is what > was already done for most of the other MPTCP NL commands, this patch > simply adds the missing ones. > > v2: > - keep "pernet = pm_nl_get_pernet(net);" at the beginning of > mptcp_pm_nl_set_flags(). Why did you move it there? The GENL_REQ_ATTR_CHECK() are usually done first, no? There is no need to get 'pernet' if some attributes are missing. Cheers, Matt -- Sponsored by the NGI0 Core fund.