[PATCH mptcp-next v5 0/6] MP_FAIL echo and retrans

[Geliang Tang <geliang.tang@suse.com>]

v5:
 - re-check for TCP_CLOSE.
 - add a new helper mptcp_check_mp_fail_response().
 - add two timers cleanup patches.

v4:
 - start and stop sk_timer instead of setting and clearing msk->flags.
 - add a new patch.

v3:
 - use msk->sk_timer and a msk->flags bit.
 - use READ_ONCE/WRITE_ONCE for subflow->mp_fail_response_expect.
 - update selftest.

v2:
 - don't clear mp_fail_response_expect flag.
 - add a helper mp_fail_response_expect_subflow to get the subflow,
   instead of using msk->first.
 - add locks as Mat suggested.
 - add a selftest.

Closes: https://github.com/multipath-tcp/mptcp_net-next/issues/261

Geliang Tang (6):
  mptcp: use mptcp_stop_timer
  mptcp: add data lock for sk timers
  mptcp: add MP_FAIL response support
  mptcp: reset subflow when MP_FAIL doesn't respond
  selftests: mptcp: check MP_FAIL response mibs
  selftests: mptcp: print extra msg in chk_csum_nr

 net/mptcp/pm.c                                | 18 +++++-
 net/mptcp/protocol.c                          | 64 ++++++++++++++++++-
 net/mptcp/protocol.h                          |  2 +
 net/mptcp/subflow.c                           | 13 ++++
 .../testing/selftests/net/mptcp/mptcp_join.sh | 49 ++++++++++++--
 5 files changed, 139 insertions(+), 7 deletions(-)

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2.34.1