[PATCH mptcp-next v4 00/14] save sched_data at mptcp_sock

[Geliang Tang <geliang.tang@suse.com>]

v4:
 - drop "mptcp: add three helpers for bpf_burst", implement the helpers
   in the bpf context directly.

v3:
 - address Florian's comments in v2.
 - split into three more patches.

v2:
 - fix this error reported by CI:
KASAN: slab-use-after-free in __mptcp_close_ssk (net/mptcp/protocol.c:2461)
 - add bpf burst scheduler.

This patchset adds sched_data pointer into mptcp_sock to to save some
data at MPTCP and subflows levels.

With these changes, the old patch "mptcp: register default scheduler" in
[1] now works.

https://patchwork.kernel.org/project/mptcp/cover/cover.1665753926.git.geliang.tang@suse.com/ [1]
Closes: https://github.com/multipath-tcp/mptcp_net-next/issues/342

Geliang Tang (14):
  Squash to "mptcp: add struct mptcp_sched_ops"
  Squash to "mptcp: add sched in mptcp_sock"
  Squash to "mptcp: add scheduler wrappers"
  mptcp: add last_snd in sched_data
  mptcp: add snd_burst in sched_data
  mptcp: register default scheduler
  mptcp: rename __mptcp_set_timeout for bpf_burst
  mptcp: add two wrappers for bpf_burst
  Squash to "bpf: Add bpf_mptcp_sched_ops"
  Squash to "bpf: Add bpf_mptcp_sched_kfunc_set"
  Squash to "selftests/bpf: Add mptcp sched structs"
  Squash to "selftests/bpf: Add bpf_rr scheduler"
  selftests/bpf: Add bpf_burst scheduler
  selftests/bpf: Add bpf_burst test

 include/net/mptcp.h                           |   4 +-
 net/mptcp/bpf.c                               |  52 ++++-
 net/mptcp/protocol.c                          |  43 ++--
 net/mptcp/protocol.h                          |  12 +-
 net/mptcp/sched.c                             |  67 +++++-
 tools/testing/selftests/bpf/bpf_tcp_helpers.h |   9 +-
 .../testing/selftests/bpf/prog_tests/mptcp.c  |  38 ++++
 .../selftests/bpf/progs/mptcp_bpf_burst.c     | 213 ++++++++++++++++++
 .../selftests/bpf/progs/mptcp_bpf_rr.c        |   4 +-
 9 files changed, 391 insertions(+), 51 deletions(-)
 create mode 100644 tools/testing/selftests/bpf/progs/mptcp_bpf_burst.c

-- 
2.35.3