[PATCH mptcp-next v5 0/3] mptcp: add statistics for mptcp socket in use

[menglong8.dong@gmail.com]

From: Menglong Dong <imagedong@tencent.com>

In the 1th patch, we do some code cleanup with replease 'sock->sk'
with 'sk'. In the 2th patch, we add statistics for mptcp socket in
use. And in the 3th patch, we add the testing for this commit.

Changes since v4:
- rebase to solve merge conflict

Changes since v3:
- rename MPTCP_DESTROIED to MPTCP_DESTROYED in the 2th patch

Changes since v2:
- add testing

Changes since v1:
- split the code cleanup into the 1th patch.
- decrease the statistics for listening mptcp socket inuse with
  mptcp_listen_inuse_dec()
- add MPTCP_DESTROIED flags to store if mptcp_destroy_common() was
  called on the msk. For fallback case, we need to decrease the
  statistics only once, and mptcp_destroy_common() can be called
  more than once.

Menglong Dong (3):
  mptcp: introduce 'sk' to replace 'sock->sk' in mptcp_listen()
  mptcp: add statistics for mptcp socket in use
  selftest: mptcp: add test for mptcp socket in use

 net/mptcp/protocol.c                      | 35 ++++++++++++++++++-----
 net/mptcp/protocol.h                      |  1 +
 net/mptcp/subflow.c                       |  3 ++
 tools/testing/selftests/net/mptcp/diag.sh | 28 ++++++++++++++++++
 4 files changed, 60 insertions(+), 7 deletions(-)

-- 
2.37.2