[PATCH mptcp-next v2 0/3] Add TCP_MAXSEG socket option support

[Geliang Tang <geliang@kernel.org>]

From: Geliang Tang <tanggeliang@kylinos.cn>

v2:
 - add a new helper tcp_sock_set_maxseg.
 - add maxseg member of struct mptcp_sock.
 - add mptcp_setsockopt_all_subflows helper.
 - invoke mptcp_setsockopt_all_subflows under the msk socket lock.
 - drop mptcp_getsockopt_sol_tcp_maxseg, use mptcp_put_int_option
   instead.

Closes: https://github.com/multipath-tcp/mptcp_net-next/issues/515

Geliang Tang (3):
  tcp: add tcp_sock_set_maxseg
  mptcp: add TCP_MAXSEG sockopt support
  selftests: mptcp: sockopt: add TCP_MAXSEG sockopt tests

 include/linux/tcp.h                           |  1 +
 net/ipv4/tcp.c                                | 24 ++++++++++++-------
 net/mptcp/protocol.h                          |  1 +
 net/mptcp/sockopt.c                           | 24 +++++++++++++++++++
 .../selftests/net/mptcp/mptcp_sockopt.c       | 22 +++++++++++++++++
 5 files changed, 63 insertions(+), 9 deletions(-)

-- 
2.43.0