From: Geliang Tang <tanggeliang@kylinos.cn>

This patchset addresses Alexei's comment for commit "Handle SIGINT
when creating netns" [1]. Export local helpers create_netns() and
cleanup_netns() defined in mptcp.c into network_helpers.c as generic
ones. For this another helper unshare_netns() is added to replace
the existing local helpers create_netns().

[1]
https://patchwork.kernel.org/project/mptcp/patch/20240507-upstream-bpf-next-20240506-mptcp-subflow-test-v1-1-e2bcbdf49857@kernel.org/

Geliang Tang (9):
  selftests/bpf: Add unshare_netns helper
  selftests/bpf: Use unshare_netns helper
  selftests/bpf: Drop duplicate create_netns
  selftests/bpf: Export create_netns helper
  selftests/bpf: Use create_netns helper
  selftests/bpf: Export cleanup_netns helper
  selftests/bpf: Use cleanup_netns helper
  selftests/bpf: Use netns helpers in lwt tests
  selftests/bpf: Use netns helpers in test_tunnel

 tools/testing/selftests/bpf/network_helpers.c | 67 +++++++++++++++++++
 tools/testing/selftests/bpf/network_helpers.h |  3 +
 .../selftests/bpf/prog_tests/assign_reuse.c   | 12 +---
 .../selftests/bpf/prog_tests/bind_perm.c      | 11 +--
 .../bpf/prog_tests/bpf_iter_setsockopt.c      | 13 +---
 .../bpf/prog_tests/btf_skc_cls_ingress.c      |  6 +-
 .../selftests/bpf/prog_tests/crypto_sanity.c  |  3 +-
 .../selftests/bpf/prog_tests/decap_sanity.c   |  6 +-
 .../selftests/bpf/prog_tests/fib_lookup.c     |  8 +--
 .../selftests/bpf/prog_tests/lwt_helpers.h    | 26 ++-----
 .../selftests/bpf/prog_tests/lwt_redirect.c   |  2 -
 .../selftests/bpf/prog_tests/lwt_reroute.c    |  2 -
 .../testing/selftests/bpf/prog_tests/mptcp.c  | 22 +-----
 .../bpf/prog_tests/ns_current_pid_tgid.c      |  9 +--
 .../selftests/bpf/prog_tests/setget_sockopt.c | 10 +--
 .../selftests/bpf/prog_tests/sk_assign.c      |  4 +-
 .../selftests/bpf/prog_tests/sock_destroy.c   |  9 +--
 .../selftests/bpf/prog_tests/sock_fields.c    | 13 +---
 .../bpf/prog_tests/sock_iter_batch.c          |  7 +-
 .../bpf/prog_tests/tcp_custom_syncookie.c     |  5 +-
 .../bpf/prog_tests/tcp_hdr_options.c          | 13 +---
 .../selftests/bpf/prog_tests/test_tunnel.c    | 19 +++---
 .../bpf/prog_tests/xdp_dev_bound_only.c       |  3 +-
 .../bpf/prog_tests/xdp_do_redirect.c          |  4 +-
 24 files changed, 114 insertions(+), 163 deletions(-)

-- 
2.43.0