From nobody Mon Feb 9 11:33:06 2026 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 5FFB1389E02; Fri, 30 Jan 2026 19:24:56 +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=1769801096; cv=none; b=qgDCyysHa3Um6uOU1wKDMCGKMKcbv9BCH0n41X5HNHGcOxKU+xSbhv1QxgilCFJNDE++8zuqhB2har6N9xl3whmNLk0jMOrPHBIlt+EPpSNKyxcMVb4omS39R5o8jyT29qdn5/U4mCPtqrpyZgvx0eNTUMDop1m07Qv6b1WAJZg= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1769801096; c=relaxed/simple; bh=yrMXX/Ly2uRIHmG4Ho8y9+W8x7hUvoaXfV0fOSFxZ30=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=gHQbX2gHVgXg6Gf/Hcxr14IqrVgx28TeGmm35by5iy2BAlnRqAgL1CAenIgfy2tzJBCSLkyU0m/cJjAKQLQgoRbfS8aydLxOtPC6VWYZDyle7hRqcpxeQbBNAgI+LnVbJRY6lfOPweCd041cOTk8HPizbPIQc2+sit2jygCmp+M= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=Ye2d8sJs; 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="Ye2d8sJs" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 86E04C116D0; Fri, 30 Jan 2026 19:24:53 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1769801096; bh=yrMXX/Ly2uRIHmG4Ho8y9+W8x7hUvoaXfV0fOSFxZ30=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=Ye2d8sJsfGA5rOLS3MUXFBMsQHNCyJMfG4jRSV0Z/blqpx95qsb0uzJJHvuVhHsij LJ7bIjRXSOhIwjeLck51YaU0hZ4WfUpxRt9T7cBrl6uuHK+iWgSkXVb8KWDEOrGylK 8TLQuZO77IepVCnEJBOfJFcetxUobkD1H6eZes5y58MG7YgZv4yVW0l5qlLDo031SR HUP3DLh+uJiEQBxZ+WiGc1tk/7sdsipVfhT8d6mcQzLusvuDhm9WNSi2g9pvDdQTUi Fkfw7zM09iMRYM2jKz2n6NswW6H26oGnuh6K8P1SN+YIyITlHwEnI1rsxFAIsGWD+Q OPyedT9HyLMNA== From: "Matthieu Baerts (NGI0)" Date: Fri, 30 Jan 2026 20:24:28 +0100 Subject: [PATCH net-next v2 5/6] selftests: mptcp: add splice io mode Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20260130-net-next-mptcp-splice-v2-5-31332ba70d7f@kernel.org> References: <20260130-net-next-mptcp-splice-v2-0-31332ba70d7f@kernel.org> In-Reply-To: <20260130-net-next-mptcp-splice-v2-0-31332ba70d7f@kernel.org> To: Mat Martineau , Geliang Tang , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Simon Horman , Neal Cardwell , Kuniyuki Iwashima , David Ahern , Shuah Khan Cc: netdev@vger.kernel.org, mptcp@lists.linux.dev, linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org, "Matthieu Baerts (NGI0)" , Geliang Tang X-Mailer: b4 0.14.3 X-Developer-Signature: v=1; a=openpgp-sha256; l=4719; i=matttbe@kernel.org; h=from:subject:message-id; bh=c/dUcsH6Pw3M4nSbAekCkr05kbFGmSy5QETn5mOhaws=; b=owGbwMvMwCVWo/Th0Gd3rumMp9WSGDJrWcsmV4SW7my6VBd8tkFg5XcZrfd58uw2mZUWawxP2 11b2NjSUcrCIMbFICumyCLdFpk/83kVb4mXnwXMHFYmkCEMXJwCMBGNckaGf3fs0yoVqiIfJv+/ wrBgBcsOaWNu7lcvt/Syav9SennvK8M/lbmhKXNEhWx7bfd1HvvP4fxnE1f8q6Z1wh+apIytXtd xAgA= X-Developer-Key: i=matttbe@kernel.org; a=openpgp; fpr=E8CB85F76877057A6E27F77AF6B7824F4269A073 From: Geliang Tang This patch adds a new 'splice' io mode for mptcp_connect to test the newly added read_sock() and splice_read() functions of MPTCP. do_splice() efficiently transfers data directly between two file descriptors (infd and outfd) without copying to userspace, using Linux's splice() system call. Usage: ./mptcp_connect.sh -m splice Signed-off-by: Geliang Tang Reviewed-by: Mat Martineau Co-developed-by: Matthieu Baerts (NGI0) Signed-off-by: Matthieu Baerts (NGI0) --- v2: catch possible errors with splice() (NIPA review assistant) --- tools/testing/selftests/net/mptcp/mptcp_connect.c | 79 +++++++++++++++++++= +++- 1 file changed, 78 insertions(+), 1 deletion(-) diff --git a/tools/testing/selftests/net/mptcp/mptcp_connect.c b/tools/test= ing/selftests/net/mptcp/mptcp_connect.c index 10f6f99cfd4e..a74b13e42ecd 100644 --- a/tools/testing/selftests/net/mptcp/mptcp_connect.c +++ b/tools/testing/selftests/net/mptcp/mptcp_connect.c @@ -52,6 +52,7 @@ enum cfg_mode { CFG_MODE_POLL, CFG_MODE_MMAP, CFG_MODE_SENDFILE, + CFG_MODE_SPLICE, }; =20 enum cfg_peek { @@ -124,7 +125,7 @@ static void die_usage(void) fprintf(stderr, "\t-j -- add additional sleep at connection start and= tear down " "-- for MPJ tests\n"); fprintf(stderr, "\t-l -- listens mode, accepts incoming connection\n"= ); - fprintf(stderr, "\t-m [poll|mmap|sendfile] -- use poll(default)/mmap+writ= e/sendfile\n"); + fprintf(stderr, "\t-m [poll|mmap|sendfile|splice] -- use poll(default)/mm= ap+write/sendfile/splice\n"); fprintf(stderr, "\t-M mark -- set socket packet mark\n"); fprintf(stderr, "\t-o option -- test sockopt