[MPTCP] [MPTCP][PATCH v2 mptcp-next 0/3] remove id 0 address

[Geliang Tang <geliangtang at gmail.com>]

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The RM_ADDR selftests will fail when the removing address id is 0:

copyfd_io_poll: poll timed out (events: POLLIN 1, POLLOUT 0)
copyfd_io_poll: poll timed out (events: POLLIN 1, POLLOUT 0)
 client exit code 2, server 2

netns ns1-0-7z6ol9 socket stat for 10009:
State                      Recv-Q                       Send-Q                                             Local Address:Port                                             Peer Address:Port                      Process                      

netns ns2-0-7z6ol9 socket stat for 10009:
State                       Recv-Q                   Send-Q                                      Local Address:Port                                        Peer Address:Port                    Process                                       
TIME-WAIT                   0                        0                                                10.0.2.2:33225                                           10.0.2.1:10009                    timer:(timewait,26sec,0)

TIME-WAIT                   0                        0                                                10.0.4.2:44309                                           10.0.4.1:10009                    timer:(timewait,26sec,0)

TIME-WAIT                   0                        0                                                10.0.3.2:53671                                           10.0.3.1:10009                    timer:(timewait,26sec,0)

10 flush addresses                      syn[ ok ] - synack[ ok ] - ack[ ok ]
                                        add[ ok ] - echo  [ ok ]
                                        rm [ ok ] - sf    [ ok ]

This patchset fixed this bug.

v2:
 - drop __mptcp_wr_shutdown in v1.

apply: export/20210222T184014
       move to next addr and testcases
       move to next addr when timeout

Closes: https://github.com/multipath-tcp/mptcp_net-next/issues/140

Geliang Tang (3):
  mptcp: unify RM_ADDR and RM_SUBFLOW receiving
  mptcp: skip closing the initial subsocket
  DO-NOT-MERGE: mptcp: remove id 0 test

 net/mptcp/pm_netlink.c                        | 94 +++++++++----------
 .../testing/selftests/net/mptcp/mptcp_join.sh |  8 +-
 2 files changed, 47 insertions(+), 55 deletions(-)

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2.29.2