[PATCH net-next 0/8] selftests: mptcp: counter cache & stats before timeout

[Matthieu Baerts (NGI0)]

Here are a bunch of small improvements to the MPTCP selftests:

- Patch 1: move code to mptcp_lib.sh to prepare the new features.

- Patch 2: simplify mptcp_lib_pr_err_stats helper use.

- Patch 3: remove unused last column from nstat output.

- Patch 4: improve stats dump in mptcp_join.sh.

- Patch 5: get counters from nstat history and simplify mptcp_connect.sh.

- Patch 6: avoid taking the same packet trace twice.

- Patch 7: wait for an event instead of a fix time.

- Patch 8: instead of using 'timeout' and print the stats after, another
  internal timeout is used: if it fires, it will print stats, then stop
  everything. This avoids confusions around stats in case of timeout.

Signed-off-by: Matthieu Baerts (NGI0) <matttbe@xxxxxxxxxx>
---
Matthieu Baerts (NGI0) (8):
      selftests: mptcp: lib: introduce 'nstat_{init,get}'
      selftests: mptcp: lib: remove stats files args
      selftests: mptcp: lib: stats: remove nstat rate columns
      selftests: mptcp: join: dump stats from history
      selftests: mptcp: lib: get counters from nstat history
      selftests: mptcp: connect: avoid double packet traces
      selftests: mptcp: wait for port instead of sleep
      selftests: mptcp: get stats just before timing out

 tools/testing/selftests/net/mptcp/mptcp_connect.sh | 140 ++++++++++-----------
 tools/testing/selftests/net/mptcp/mptcp_join.sh    |  65 +++++-----
 tools/testing/selftests/net/mptcp/mptcp_lib.sh     |  58 +++++++--
 tools/testing/selftests/net/mptcp/mptcp_sockopt.sh |  43 ++++---
 tools/testing/selftests/net/mptcp/simult_flows.sh  |  44 ++++---
 tools/testing/selftests/net/mptcp/userspace_pm.sh  |   3 +-
 6 files changed, 203 insertions(+), 150 deletions(-)
---
base-commit: df58ee7d8faf353ebf5d4703c35fcf3e578e9b1b
change-id: 20251114-net-next-mptcp-sft-count-cache-stats-timeout-faa64482db92

Best regards,
-- 
Matthieu Baerts (NGI0) <matttbe@xxxxxxxxxx>