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 96A92393DDF for ; Thu, 26 Mar 2026 18:59:47 +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=1774551587; cv=none; b=UlCTIB0r/3Y5Gw7pzyUQpIFRlkcfpG3mGtoHtgbepFng7Cdbyfn8qxadgk/zj5+Tp2X7DnLXCHWaKVcQSei0v09p1PBMDehrbMVl6nzLggLPXL64AD96hOMK0bwH8MewKyjf+5Ofjl7Oecye/ngdhly2NFHadYZKIYCPs4kRob4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1774551587; c=relaxed/simple; bh=itEtf55vTMMLM2Fy1wpNtWm/i9tNMQpln7Z46bjIJVw=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=iOGkohE99VJr2tfKl6AGPCupSqbba4fSiGfqbNAMQuxLy8vKYmN0NnPCtWgmpGdYzul5QzidKr5XmIhBVoRJXTZVKOf4Z8P8ZHvWlP0PDsxKa/5ReSxm2zi52Yx6ZTI/Td9uvEVMVA+Ja+j2NY0t1SLpQalwexEHmCO37i6zP2Q= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=mbxqeAAl; 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="mbxqeAAl" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 84ECEC116C6; Thu, 26 Mar 2026 18:59:46 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1774551587; bh=itEtf55vTMMLM2Fy1wpNtWm/i9tNMQpln7Z46bjIJVw=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=mbxqeAAlWEJoyv+696d4RHtRdR1tXHcFqWI63RxZfM7fFOaAQR0969E77cTl6wJ1y XNdKcOaByEbO1w0i+7JkPJw+nB1RWTYOHcqdAJA2yQS2YSasaNk96WsGIJ30IQG2LS swlBDKXrK5vvqac2DCv4oyU4vt/cBiq6i6KqDR3W/d9zBXkvKx1QnyS+whkGK+9oqd CkC0bAXludl0gt9IGUHsV1JQbu5eZWsmIdrMv6ua5UAOobRwzfZZW8AxRQ1F4derYF apa8gzB/dBL17KIBOeh4VoyJIjwapYnBEDP6QeBkRZM8aSZKVZhChtFFGWTySV1iKS Y9G66hvZ3zAkQ== Message-ID: <931bd8a3-3269-4782-bd63-93b36cc657e6@kernel.org> Date: Thu, 26 Mar 2026 19:59:44 +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: [RESEND PATCH mptcp-next v2 2/3] mptcp: implement .splice_eof Content-Language: fr To: Geliang Tang , mptcp@lists.linux.dev Cc: Geliang Tang References: From: Matthieu Baerts Autocrypt: addr=matttbe@kernel.org; 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charset=UTF-8 Content-Transfer-Encoding: 7bit Hi Geliang, On 17/03/2026 10:41, Geliang Tang wrote: > From: Geliang Tang > > This patch implements the .splice_eof interface for MPTCP, namely > mptcp_splice_eof(), which calls do_tcp_splice_eof() for each active > subflow when a sendfile() operation reaches end-of-file. > > do_tcp_splice_eof() flushes any remaining data in the TCP send queue. > MPTCP operates over multiple TCP subflows, and each subflow may have > pending data in its send buffer that needs to be properly finalized > when splicing data through an MPTCP socket. > > sock_splice_eof() calls the .splice_eof interface from struct proto_ops. > To maintain consistency with regular TCP behavior, the .splice_eof > interface of mptcp_stream_ops is set to inet_splice_eof, which will > switch to the protocol-specific implementation (sk->sk_prot->splice_eof) > - for MPTCP, that is mptcp_splice_eof(). > > This is an improvement; nothing was broken before. MPTCP previously did not > handle the splice EOF notification, while TCP did. Without .splice_eof() > support, the queue is not flushed immediately when sendfile() reaches EOF, > but it will eventually be flushed after a small delay. Thank you for this patch! Do you mind checking the comments from sashiko please? https://sashiko.dev/#/patchset/cover.1773740361.git.tanggeliang%40kylinos.cn They look plausible, but better to double-check. Cheers, Matt -- Sponsored by the NGI0 Core fund.