[RFC mptcp-next v4 00/10] MPTCP KTLS support

Geliang Tang
2025-12-12T02:27:25Z

v4:
- split "tls: add MPTCP protocol support" into smaller, more
focused patches.
- a new mptcp_inq helper has been implemented instead of directly
using mptcp_inq_hint to fix the issue mentioned in [1].
- add sk_is_msk helper.
- the 'expect' parameter will no longer be added to sock_test_tcpulp.
Instead, SOCK_TEST_TCPULP items causing the tests failure will be
directly removed.
- remove the "TCP KTLS" tests, keeping only the MPTCP-related ones.

[1]
https://patchwork.kernel.org/project/mptcp/patch/ce74452f4c095a1761ef493b767b4bd9f9c14359.1764333805.git.tanggeliang@kylinos.cn/

v3:
- mptcp_read_sock() and mptcp_poll() are not exported, as mptcp_sockopt
test does not use read_sock/poll interfaces. They will be exported when
new tests are added in the future.
- call mptcp_inq_hint in tls_device_rx_resync_new_rec(),
tls_device_core_ctrl_rx_resync() and tls_read_flush_backlog() too.
- update selftests.
- Link: https://patchwork.kernel.org/project/mptcp/cover/cover.1763800601.git.tanggeliang@kylinos.cn/

v2:
- fix disconnect.
- update selftests.

This series adds KTLS support for MPTCP. Since the ULP of msk is not being
used, ULP KTLS can be directly configured onto msk without affecting its
communication.

Closes: https://github.com/multipath-tcp/mptcp_net-next/issues/480

Geliang Tang (10):
mptcp: add sk_is_msk helper
tls: switch to MPTCP_SKB_CB
tls: switch to mptcp_inq
tls: switch to mptcp_sendmsg_locked
tls: switch to mptcp_recv_skb
tls: switch to mptcp_read_done
mptcp: update ULP getsockopt
mptcp: enable TLS setsockopt
selftests: mptcp: connect: update sock_test_tcpulp
selftests: mptcp: sockopt: implement MPTCP KTLS tests

include/net/mptcp.h | 48 ++++++++++++
net/mptcp/protocol.c | 66 ++++++++++++++--
net/mptcp/protocol.h | 10 ---
net/mptcp/sockopt.c | 30 +++++++-
net/tls/tls_main.c | 4 +-
net/tls/tls_strp.c | 24 ++++--
net/tls/tls_sw.c | 8 +-
tools/testing/selftests/net/mptcp/config | 1 +
.../selftests/net/mptcp/mptcp_connect.c | 20 +++--
.../selftests/net/mptcp/mptcp_sockopt.c | 76 ++++++++++++++++++-
.../selftests/net/mptcp/mptcp_sockopt.sh | 36 +++++++++
11 files changed, 289 insertions(+), 34 deletions(-)

--
2.51.0