[PATCH mptcp-next v5 00/12] selftests: consolidate TCP_INQ testing into sockopt

[Geliang Tang <geliang@kernel.org>]

From: Geliang Tang <tanggeliang@kylinos.cn>

v5:
 - Continue using the approach from v3 and fix the instability issues.
   This version has undergone extensive loop testing.
 - The new two separate functions, server_huge_transfer() and
   client_huge_transfer(), improve code structure.

v4:
 - v3 changed the behavior of process_one_client and connect_one_server,
   causing intermittent failures during loop testing. Revert to using the
   v2 approach, along with some cleanups.
 - https://patchwork.kernel.org/project/mptcp/cover/cover.1757686538.git.tanggeliang@kylinos.cn/

v3:
 - No longer using process_one_client_inq() and connect_one_server_inq()
   for switching; instead, the inq-related code has been merged into
   process_one_client() and connect_one_server().
 - https://patchwork.kernel.org/project/mptcp/cover/cover.1756200029.git.tanggeliang@kylinos.cn/

v2:
 - patch 4, a new patch, add do_setsockopt_inq helper.
 - cleanups.
 - https://patchwork.kernel.org/project/mptcp/cover/cover.1754664106.git.tanggeliang@kylinos.cn/

v1:
 - https://patchwork.kernel.org/project/mptcp/cover/cover.1754620968.git.tanggeliang@kylinos.cn/

This series consolidates the TCP_INQ test functionality from mptcp_inq
into mptcp_sockopt, simplifying the test suite while maintaining full
test coverage.

Geliang Tang (12):
  selftests: mptcp: sockopt: add tx/rx protocol options
  selftests: mptcp: sockopt: add TCP_INQ test option
  selftests: mptcp: sockopt: set TCP_INQ on accepted sockets
  selftests: mptcp: sockopt: use unix socket instead of pipe
  selftests: mptcp: sockopt: pass echo length over unixfd
  selftests: mptcp: sockopt: set FIONREAD ioctl
  selftests: mptcp: sockopt: add huge data transfer tests
  selftests: mptcp: sockopt: add wait_for_ack helper
  selftests: mptcp: sockopt: add get_tcp_inq helper
  selftests: mptcp: sockopt: skip MPTCP opts for TCP tests
  selftests: mptcp: sockopt: replace mptcp_inq with sockopt
  selftests: mptcp: sockopt: remove obsolete mptcp_inq

 tools/testing/selftests/net/mptcp/.gitignore  |   1 -
 tools/testing/selftests/net/mptcp/Makefile    |   1 -
 tools/testing/selftests/net/mptcp/mptcp_inq.c | 614 ------------------
 .../selftests/net/mptcp/mptcp_sockopt.c       | 297 ++++++++-
 .../selftests/net/mptcp/mptcp_sockopt.sh      |   8 +-
 5 files changed, 274 insertions(+), 647 deletions(-)
 delete mode 100644 tools/testing/selftests/net/mptcp/mptcp_inq.c

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2.53.0