From: Geliang Tang <tanggeliang@kylinos.cn>

v6:
 - address Matt's comments in v5.
 - use mptcp_for_each_subflow in _check_getsockopt_subflow_mark.
 - check msk->pm.subflows in _check_getsockopt_subflow_mark/cc.
 - add wait_for_new_subflows helper.

v5:
 - rename _check_getsockopt_subflows_mark in patch 1.
 - address Matt's comments in v4.

v4:
 - address Matt's comments in v3.

v3:
 - drop "ss_search" from subflow subtest
 - fix mptcp_for_each_subflow_safe
 - add cond_break in list_for_each_entry/_safe

Two fixes address Martin's comments in "new MPTCP subflow subtest" v4.
Patch 2 will conflict with "selftests/bpf: Add bpf_first scheduler & test".

Geliang Tang (4):
  Squash to "selftests/bpf: Add mptcp subflow example"
  selftests/bpf: Add getsockopt to inspect mptcp subflow
  Squash to "selftests/bpf: Add mptcp subflow subtest"
  Squash to "selftests/bpf: Add bpf scheduler test"

 .../testing/selftests/bpf/prog_tests/mptcp.c  | 65 +++++++++++------
 tools/testing/selftests/bpf/progs/mptcp_bpf.h | 35 +++++++++
 .../selftests/bpf/progs/mptcp_subflow.c       | 71 ++++++++++++++++++-
 3 files changed, 149 insertions(+), 22 deletions(-)

-- 
2.43.0

Hi Geliang,

Thank you for your modifications, that's great!

Our CI did some validations and here is its report:

- KVM Validation: normal: Success! ✅
- KVM Validation: debug: Success! ✅
- KVM Validation: btf (only bpftest_all): Success! ✅
- Task: https://github.com/multipath-tcp/mptcp_net-next/actions/runs/10670890802

Initiator: Patchew Applier
Commits: https://github.com/multipath-tcp/mptcp_net-next/commits/2a3f3a1b8296
Patchwork: https://patchwork.kernel.org/project/mptcp/list/?series=885041


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)