[MPTCP][PATCH v4 mptcp-next 0/4] add MP_CAPABLE 'C' flag

[Geliang Tang <geliangtang@gmail.com>]

v4:
 - rename mptcp_is_allow_join_id0 to mptcp_allow_join_id0
 - rename deny_join_id0 in mptcp_pm_data to remote_deny_join_id0
 - add comments for self test cases
 - apply: export/20210504T064955 +
	  "data checksum support" +
	  "data checksum support cleanups"

v3:
 - use 'u8 allow_join_initial_addr_port'
 - drop the spinlock in patch 3

v2:
 - rename join_denied to allow_join_id0 in mptcp_out_options
 - rename join_denied to deny_join_id0 in mptcp_options_received
 - add a new function mptcp_pm_deny_join_id0_received
 - move deny_join_id0 flag from mptcp_sock to mptcp_pm_data
 - check deny_join_id0 flag in mptcp_pm_create_subflow_or_signal_addr
instead of in mptcp_syn_options.

Closes: https://github.com/multipath-tcp/mptcp_net-next/issues/183

Geliang Tang (4):
  mptcp: add sysctl allow_join_initial_addr_port
  mptcp: add allow_join_id0 in mptcp_out_options
  mptcp: add deny_join_id0 in mptcp_options_received
  selftests: mptcp: add deny_join_id0 testcases

 Documentation/networking/mptcp-sysctl.rst     | 13 +++++
 include/net/mptcp.h                           |  3 +-
 net/mptcp/ctrl.c                              | 16 ++++++
 net/mptcp/options.c                           | 12 ++++
 net/mptcp/pm.c                                |  1 +
 net/mptcp/pm_netlink.c                        |  4 +-
 net/mptcp/protocol.h                          | 11 +++-
 net/mptcp/subflow.c                           |  3 +
 .../testing/selftests/net/mptcp/mptcp_join.sh | 57 ++++++++++++++++++-
 9 files changed, 114 insertions(+), 6 deletions(-)

-- 
2.31.1