[PATCH bpf-next v4 0/4] selftests/bpf: convert three other cgroup tests to test_progs

["Alexis Lothoré (eBPF Foundation)" <alexis.lothore@bootlin.com>]

Hello,
this series brings a new set of test converted to the test_progs framework.
Since the tests are quite small, I chose to group three tests conversion in
the same series, but feel free to let me know if I should keep one series
per test. The series focuses on cgroup testing and converts the following
tests:
- get_cgroup_id_user
- cgroup_storage
- test_skb_cgroup_id_user

Signed-off-by: Alexis Lothoré (eBPF Foundation) <alexis.lothore@bootlin.com>
---
Changes in v4:
- Fix test after netns addition by making sure loopack interface is up
- Link to v3: https://lore.kernel.org/r/20240812-convert_cgroup_tests-v3-0-47ac6ce4e88b@bootlin.com

Changes in v3:
- Fixed multiple leaks on cgroup file descriptors and sockets
- Used dedicated network namespaces for tests involving network
- Link to v2: https://lore.kernel.org/r/20240806-convert_cgroup_tests-v2-0-180c57e5b710@bootlin.com

Changes in v2:
- Use global variables instead of maps when possible
- Collect review tags from Alan
- Link to v1: https://lore.kernel.org/r/20240731-convert_cgroup_tests-v1-0-14cbc51b6947@bootlin.com

---
Alexis Lothoré (eBPF Foundation) (4):
      selftests/bpf: convert get_current_cgroup_id_user to test_progs
      selftests/bpf: convert test_cgroup_storage to test_progs
      selftests/bpf: add proper section name to bpf prog and rename it
      selftests/bpf: convert test_skb_cgroup_id_user to test_progs

 tools/testing/selftests/bpf/.gitignore             |   3 -
 tools/testing/selftests/bpf/Makefile               |   8 +-
 tools/testing/selftests/bpf/get_cgroup_id_user.c   | 151 -----------------
 .../selftests/bpf/prog_tests/cgroup_ancestor.c     | 169 +++++++++++++++++++
 .../bpf/prog_tests/cgroup_get_current_cgroup_id.c  |  46 ++++++
 .../selftests/bpf/prog_tests/cgroup_storage.c      |  96 +++++++++++
 ...test_skb_cgroup_id_kern.c => cgroup_ancestor.c} |  14 +-
 tools/testing/selftests/bpf/progs/cgroup_storage.c |  24 +++
 .../selftests/bpf/progs/get_cgroup_id_kern.c       |  26 +--
 tools/testing/selftests/bpf/test_cgroup_storage.c  | 174 --------------------
 tools/testing/selftests/bpf/test_skb_cgroup_id.sh  |  63 -------
 .../selftests/bpf/test_skb_cgroup_id_user.c        | 183 ---------------------
 12 files changed, 344 insertions(+), 613 deletions(-)
---
base-commit: ab2c4aa104050a184c3411a973b165285549f732
change-id: 20240725-convert_cgroup_tests-d07c66053225

Best regards,
-- 
Alexis Lothoré, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com