[PATCH mptcp-next v5 00/16] MPTCP sockmap support

[Geliang Tang <geliang@kernel.org>]

From: Geliang Tang <tanggeliang@kylinos.cn>

v5:
 - Patches 1-4 are from "Reduce the differences between TCP and MPTCP for
   TLS usage" set.
 - More patches for sockmap support.
 - Rename this set from "implement psock_update_sk_prot" to "MPTCP sockmap
   support"

v4:
 - Address Mat's comments: implement .read_skb to make the selftests run.
 - Move mptcp_bpf_update_proto() from protocol.c to bpf.c.
 - Include the "implement .splice_eof" patches in this series, as they
   both modify mptcp_prot, mptcp_stream_ops and mptcp_v6_stream_ops.
 - https://patchwork.kernel.org/project/mptcp/cover/cover.1787554581.git.tanggeliang@kylinos.cn/

v3:
 - Address the comments by ai review.
   - use WRITE_ONCE to set sk->sk_write_space.
   - update the selftest, set a new key for client socket.
 - Fix line length warnings.
 - https://patchwork.kernel.org/project/mptcp/cover/cover.1773826662.git.tanggeliang@kylinos.cn/

RESEND:
 - rebased.
 - to trigger ai review.

v2:
 - Include mptcp_bpf_update_proto within CONFIG_BPF_SYSCALL to fix the
compilation errors reported by the kernel test robot.
 - Add checks for IS_ENABLED(CONFIG_MPTCP_IPV6).

Implement psock_update_sk_prot, for basic MPTCP BPF SOCKMAP support.

Closes: https://github.com/multipath-tcp/mptcp_net-next/issues/521

Geliang Tang (15):
  mptcp: add sendmsg_locked to proto_ops
  mptcp: track app-limited state in mptcp_sendmsg
  selftests: mptcp: sockopt: check app_limited
  bpf: drop duplicate check_app_limited in tcp_bpf_push
  mptcp: implement psock_update_sk_prot for sockmap
  mptcp: add sock_map_update BPF helper
  selftests/bpf: enable MPTCP support in sockmap tests
  mptcp: implement read_skb for sockmap stream verdict
  bpf: export and generalize tcp_bpf_ioctl
  mptcp: add TCP_REPAIR sockopt support
  selftests/bpf: add MPTCP coverage to sockmap_basic
  mptcp: add sk_is_msk() helper and use it in sockmap
  mptcp: add SO_ATTACH_REUSEPORT_EBPF support
  mptcp: add sk_select_reuseport BPF helper
  selftests/bpf: add MPTCP coverage to sockmap_listen

Paolo Abeni (1):
  mptcp: defer read_sock cleanup to mptcp_worker

 include/linux/bpf.h                           |  13 ++
 include/net/mptcp.h                           |  12 ++
 include/net/tcp.h                             |   7 +
 include/uapi/linux/bpf.h                      |  19 ++
 kernel/bpf/verifier.c                         |   8 +-
 net/core/filter.c                             |  60 +++++-
 net/core/sock_map.c                           |  14 +-
 net/ipv4/tcp.c                                |   9 +-
 net/ipv4/tcp_bpf.c                            |  40 ++--
 net/mptcp/bpf.c                               | 172 ++++++++++++++++++
 net/mptcp/protocol.c                          | 114 ++++++++++--
 net/mptcp/protocol.h                          |  20 ++
 net/mptcp/sockopt.c                           |  21 ++-
 .../testing/selftests/bpf/prog_tests/mptcp.c  |  27 +--
 .../selftests/bpf/prog_tests/socket_helpers.h |  25 ++-
 .../selftests/bpf/prog_tests/sockmap_basic.c  |  33 +++-
 .../selftests/bpf/prog_tests/sockmap_listen.c | 122 ++++++++-----
 .../selftests/bpf/progs/mptcp_sockmap.c       |   8 +-
 .../selftests/bpf/progs/test_sockmap_listen.c |  25 +++
 .../selftests/net/mptcp/mptcp_sockopt.c       |   1 +
 20 files changed, 622 insertions(+), 128 deletions(-)

-- 
2.53.0