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 26CE4204697 for ; Thu, 10 Apr 2025 17:38:30 +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=1744306712; cv=none; b=SRBnSMCnGC/KiZLRHi/exYKwbbV/OIQ1MZ0NfDp2nhUHelN57+HkAALrgDkevq1w0XnHurShAm/t8Q0OvEZ6wqIjVq7oeurBjj/NJzbPW5GTnIQYu1uk/VLsWZBrIPsMJ5uOu+pQMqDtMsz5x540QgnRETrJLugeXLXD13uNqa0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1744306712; c=relaxed/simple; bh=MzFL3QitDxw6zJ3eogdRp9bSG9ej24PfEDqgcDYVB84=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=FJ6+0xZSNsx/bCES1lNW2XKHjkOCsl8qZkEFn+dRsBFUW++wVm9kaPX+eTv19Hmvh1UYrxKmW0wyTX6+ATJtn4YZP+lnR7IV4yW7g6EjpKeC9Jkvdibxeejy6558eqbYGR6/+ic3bwOdBLduOIqcN2g+AlupmRDQ2Lm3fIDOWGY= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=su8WLyTK; 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="su8WLyTK" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 605B0C4CEDD; Thu, 10 Apr 2025 17:38:29 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1744306710; bh=MzFL3QitDxw6zJ3eogdRp9bSG9ej24PfEDqgcDYVB84=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=su8WLyTKqWOZLoyofIfISr4Dye9XmlzBDUIwOcXEesP9f7A6MuM+cY0OnjMuH0toC qXRMc3vS5kjtCpeu28T8FPgFB5JNzgWxvHZWZWaCWrT2wt9CdJtMcPTBFX9C+VM7tZ Jc9O0GSXSn10UISwuk27LqLhJxbRuaQuQGx2JpRz0qjLgnXZx7OSqvlpUmZyOYrUeR BTK3JLJ5YcIoMIikNx6SUC9B+ilUO6lXL3wilJnvWNnKPdLllJgzQbLeOuGOSotTtd Oov2MDUCig+x2FCEZwdGEhI94cZVxdlSUg3w+Q/mtuSZgHNRweHCO9GNY3Nl1ASKr1 BTdx2HgZmeF3A== Message-ID: Date: Thu, 10 Apr 2025 19:38:27 +0200 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] mptcp: pm: drop redundant mptcp_pm_send_ack Content-Language: en-GB, fr-BE To: Geliang Tang , mptcp@lists.linux.dev Cc: Geliang Tang References: <539ce4556220df3d2ea4826c311c5bc4e306f9a2.1743863553.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 05/04/2025 16:33, Geliang Tang wrote: > From: Geliang Tang > > mptcp_pm_send_ack() is called twice in __mptcp_pm_addr_send_ack(), which > makes the code a bit redundant. The first call to mptcp_pm_send_ack() when > a non-stale subflow is found in the loop can be removed. Instead, we can > break the loop to use the second mptcp_pm_send_ack(). > > Signed-off-by: Geliang Tang > --- > net/mptcp/pm.c | 4 ++-- > 1 file changed, 2 insertions(+), 2 deletions(-) > > diff --git a/net/mptcp/pm.c b/net/mptcp/pm.c > index be1e27ee393e..a4f9cb113018 100644 > --- a/net/mptcp/pm.c > +++ b/net/mptcp/pm.c > @@ -225,8 +225,8 @@ void mptcp_pm_addr_send_ack(struct mptcp_sock *msk) > mptcp_for_each_subflow(msk, subflow) { > if (__mptcp_subflow_active(subflow)) { > if (!subflow->stale) { > - mptcp_pm_send_ack(msk, subflow, false, false); > - return; > + alt = subflow; > + break; Is this patch going to simplify another one later on? Because the modification sounds strange: here 'alt' stands for 'alternative'. So to be complete, better to rename the variable as well. But... is this really worth it? If you need to modify this helper later on, maybe. If not, I guess it is fine to keep 'mptcp_pm_send_ack()' duplicated for the moment. WDYT? This is also to be aligned with: https://docs.kernel.org/process/maintainer-netdev.html#clean-up-patches (trying to avoid cleanup patches "alone", except if it is part of another set of changes related to that) > } > > if (!alt) Cheers, Matt -- Sponsored by the NGI0 Core fund.