netdev - [PATCH net-next 0/6] mptcp: implement .read_sock and .splice

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Message-Id: <20260129-net-next-mptcp-splice-v1-0-994cac40daa0@kernel.org>
Date: Thu, 29 Jan 2026 20:23:33 +0100
From: "Matthieu Baerts (NGI0)" <matttbe@...nel.org>
To: Mat Martineau <martineau@...nel.org>, Geliang Tang <geliang@...nel.org>, 
 "David S. Miller" <davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>, 
 Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>, 
 Simon Horman <horms@...nel.org>, Neal Cardwell <ncardwell@...gle.com>, 
 Kuniyuki Iwashima <kuniyu@...gle.com>, David Ahern <dsahern@...nel.org>, 
 Shuah Khan <shuah@...nel.org>
Cc: netdev@...r.kernel.org, mptcp@...ts.linux.dev, 
 linux-kernel@...r.kernel.org, linux-kselftest@...r.kernel.org, 
 "Matthieu Baerts (NGI0)" <matttbe@...nel.org>, 
 Hannes Reinecke <hare@...nel.org>, Geliang Tang <geliang@...nel.org>
Subject: [PATCH net-next 0/6] mptcp: implement .read_sock and .splice_read

This series is a preparation work for future in-kernel MPTCP sockets
usage. Here, two interfaces are implemented: read_sock and splice_read.
As a result of this series, splice() with MPTCP sockets -- which was
already supported -- is now improved.

- Patches 1-2: .read_sock implementation

- Patches 3-4: .splice_read implementation

- Patches 5-6: validate splice() support with MPTCP sockets.

Signed-off-by: Matthieu Baerts (NGI0) <matttbe@...nel.org>
---
Geliang Tang (6):
      mptcp: add eat_recv_skb helper
      mptcp: implement .read_sock
      tcp: export tcp_splice_state
      mptcp: implement .splice_read
      selftests: mptcp: add splice io mode
      selftests: mptcp: connect: cover splice mode

 include/net/tcp.h                                  |  11 ++
 net/ipv4/tcp.c                                     |  13 +-
 net/mptcp/protocol.c                               | 215 ++++++++++++++++++++-
 tools/testing/selftests/net/mptcp/Makefile         |   1 +
 tools/testing/selftests/net/mptcp/mptcp_connect.c  |  63 +++++-
 .../selftests/net/mptcp/mptcp_connect_splice.sh    |   5 +
 6 files changed, 289 insertions(+), 19 deletions(-)
---
base-commit: e75e408dc524ba32b3bd66e89d2ba1e337877bfa
change-id: 20260129-net-next-mptcp-splice-62db4a1a9c52

Best regards,
-- 
Matthieu Baerts (NGI0) <matttbe@...nel.org>