[MPTCP] [MPTCP][PATCH v5 mptcp-next 0/3] add ADD_ADDR IPv6 support

[Geliang Tang <geliangtang at gmail.com>]

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v5:
 - drop msleep() in v4
 - drop MPTCP_ADD_ADDR_SEND_ACK in v4
 - add WRITE_ONCE/READ_ONCE for msk->pm.add_addr_signal
 - depend on "mptcp: keep unaccepted MPC subflow into join list"

v4:
 - update the patches as Paolo suggested:
 - change the 'add_addr_signal' type
 - set MPTCP_ADD_ADDR_IPV6 in mptcp_pm_announce_addr
 - add a new helper mptcp_send_dedicated_add_addr_packet to sent out a
new pure ACK packet
 - drop other MPTCP suboptions in mptcp_established_options_add_addr

v3:
 - drop other MPTCP suboptions instead of OPTION_TS

v2:
 - avoid adding new field to tcp_sock, add new field in mptcp_pm_data.
 - drop OPTION_TS in mptcp_established_options_add_addr, not in
tcp_established_options.

Closes: https://github.com/multipath-tcp/mptcp_net-next/issues/55

Geliang Tang (3):
  mptcp: change add_addr_signal type
  mptcp: send out dedicated ADD_ADDR packet
  selftests: mptcp: add ADD_ADDR IPv6 test cases

 net/mptcp/options.c                           | 25 ++++++-
 net/mptcp/pm.c                                | 23 +++---
 net/mptcp/pm_netlink.c                        | 27 +++++++
 net/mptcp/protocol.c                          |  2 +-
 net/mptcp/protocol.h                          | 13 +++-
 .../testing/selftests/net/mptcp/mptcp_join.sh | 70 ++++++++++++++++++-
 6 files changed, 144 insertions(+), 16 deletions(-)

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