From nobody Mon Feb 9 11:32:00 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 4570E324718; Thu, 29 Jan 2026 19:24:05 +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=1769714648; cv=none; b=XRiU+f8fLnQfQFOH6CqPBha3XaO6XOLrNpSujQ40/ICJECyIGTSmgWEtMRI/fzMKOGRA9plZlKXamta3W88NoM5oFjBAG05pw3qyvn0GpOURCe3NlvwWO39++dY17N+xNBYA0dkri2qLkePRKEfUTLH0UMuwRoAJAdZV2HFsf/k= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1769714648; c=relaxed/simple; bh=UhMRuuhZAFvT556ZpN92xarxT8NldbqyDz7w9uzgrpg=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=FUI4iXAxSiRu207aw/TBh3pOCZw5hZPvPX95uFGhojTHig2wTAZ0OsaecB1HzXQpx4cCNlXNdyiDCIzR848bMa8O85nTzRxWVPivGcLcKLBcMds+bYZXIGJmZekcMwd2aPQ3ybkbK2ivuW8z3HEkRBWSFC9Kt84Bd+LhoM8PkLA= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=m60i8tzd; 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="m60i8tzd" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 5FEF5C4CEF7; Thu, 29 Jan 2026 19:24:03 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1769714645; bh=UhMRuuhZAFvT556ZpN92xarxT8NldbqyDz7w9uzgrpg=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=m60i8tzd4QO0eRTIYrNSN/Ns4HChA36Ueegd0ZdNPOnqkhgy+OH+BIDsfA0DcpqJN yda9J0RmjpagrA+JnMg3CRA6oyyi0xKgZ9/AwJIrbudsNe68iX01Ey/d45Zf9Lu4LF ysYyHJAvltbUBDcp/SbGawNuFQa+orM4N0C06Q1fcDJIw+uoGMX/d3rCK3Xl1KsyxV 5Ix6+eDzGcL7qXGT3/Vnn1v3R4SdddmXArdrOoWjjMB7EJS3IW6o5Vm4wQ05G1rpGI QcWsX0vA7nEW6v7jBZ6XykyKlkZ3H6k0dFh3Z8+0uvBQ23SvJLnQx1lPTGxQ9KgKQY dTs1qZIgWaTlg== From: "Matthieu Baerts (NGI0)" Date: Thu, 29 Jan 2026 20:23:38 +0100 Subject: [PATCH net-next 5/6] selftests: mptcp: add splice io mode Precedence: bulk X-Mailing-List: mptcp@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20260129-net-next-mptcp-splice-v1-5-994cac40daa0@kernel.org> References: <20260129-net-next-mptcp-splice-v1-0-994cac40daa0@kernel.org> In-Reply-To: <20260129-net-next-mptcp-splice-v1-0-994cac40daa0@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=4220; i=matttbe@kernel.org; h=from:subject:message-id; bh=/kusE89Z76EIevhWm5CsEZ0h5H6PEbZn8hZprjRZLzw=; b=owGbwMvMwCVWo/Th0Gd3rumMp9WSGDKrNx/u+ui3wGT20QfOj8S/iatMWpE9YU1JnRPnv7Xd8 xh2/RCa01HKwiDGxSArpsgi3RaZP/N5FW+Jl58FzBxWJpAhDFycAjARj8mMDE0M1pdFqvfu+XPu lkWG3sNv0ZaS1nf1dMsbbQ+/9ppxu4fhn5WS6NVw5TjBrzUbNjx7ZRn8a+kL+a83y/dMjbH7cp8 9gQ8A 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 Signed-off-by: Matthieu Baerts (NGI0) --- tools/testing/selftests/net/mptcp/mptcp_connect.c | 63 +++++++++++++++++++= +++- 1 file changed, 62 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..1c4fe60089a2 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