From: Geliang Tang <tanggeliang@kylinos.cn>

v2:
 - trigger fallback to TCP.
 - check CONFIG_TCP_MD5SIG.
 - update MD5 comment.
 - drop selftests, packetdrill tests will be added later.

This series introduces support for TCP_MD5SIG socket options in MPTCP along
with code improvements:

Patch 1: Refactors TCP_MAXSEG getsockopt handling to improve code
consistency
Patch 2: Adds setsockopt support for TCP_MD5SIG/TCP_MD5SIG_EXT (first
subflow only)

Closes: https://github.com/multipath-tcp/mptcp_net-next/issues/575

Geliang Tang (2):
  mptcp: Handle TCP_MAXSEG getsockopt in common case
  mptcp: setsockopt support for TCP_MD5SIG

 net/mptcp/sockopt.c | 16 +++++++++++-----
 1 file changed, 11 insertions(+), 5 deletions(-)

-- 
2.48.1

Hi Geliang,

Thank you for your modifications, that's great!

Our CI did some validations and here is its report:

- KVM Validation: normal: Unstable: 1 failed test(s): packetdrill_sockopts 🔴
- KVM Validation: debug: Success! ✅
- KVM Validation: btf-normal (only bpftest_all): Success! ✅
- KVM Validation: btf-debug (only bpftest_all): Success! ✅
- Task: https://github.com/multipath-tcp/mptcp_net-next/actions/runs/16643003513

Initiator: Patchew Applier
Commits: https://github.com/multipath-tcp/mptcp_net-next/commits/af302c9a19a1
Patchwork: https://patchwork.kernel.org/project/mptcp/list/?series=987252


If there are some issues, you can reproduce them using the same environment as
the one used by the CI thanks to a docker image, e.g.:

    $ cd [kernel source code]
    $ docker run -v "${PWD}:${PWD}:rw" -w "${PWD}" --privileged --rm -it \
        --pull always mptcp/mptcp-upstream-virtme-docker:latest \
        auto-normal

For more details:

    https://github.com/multipath-tcp/mptcp-upstream-virtme-docker


Please note that despite all the efforts that have been already done to have a
stable tests suite when executed on a public CI like here, it is possible some
reported issues are not due to your modifications. Still, do not hesitate to
help us improve that ;-)

Cheers,
MPTCP GH Action bot
Bot operated by Matthieu Baerts (NGI0 Core)