[PATCH bpf-next v4 00/14] selftests/bpf: Migrate test_xdp_redirect_multi.sh to test_progs

[Bastien Curutchet (eBPF Foundation)]

Hi all,

This patch series continues the work to migrate the *.sh tests into
prog_tests framework.

test_xdp_redirect_multi.sh tests the XDP redirections done through
bpf_redirect_map().

This is already partly covered by test_xdp_veth.c that already tests
map redirections at XDP level. What isn't covered yet by test_xdp_veth is
the use of the broadcast flags (BPF_F_BROADCAST or BPF_F_EXCLUDE_INGRESS)
and XDP egress programs.

Hence, this patch series add test cases to test_xdp_veth.c to get rid of
the test_xdp_redirect_multi.sh:
 - PATCH 1 Add an helper to generate unique names
 - PATCH 2 to 9 rework test_xdp_veth to make it more generic and allow to
   configure different test cases
 - PATCH 10 adds test cases for 'classic' bpf_redirect_map()
 - PATCH 11 and 12 cover the broadcast flags
 - PATCH 13 covers the XDP egress programs
 - PATCH 14 removes test_xdp_redirect_multi.sh

Signed-off-by: Bastien Curutchet (eBPF Foundation) <bastien.curutchet@xxxxxxxxxxx>
---
Changes in v4:
- Remove the NO_IP #define
- append_tid() takes string's size as input to ensure there is enough
  space to fit the thread ID at the end
- Fix PATCH 12's commit log
- Link to v3: https://lore.kernel.org/r/20250128-redirect-multi-v3-0-c1ce69997c01@xxxxxxxxxxx

Changes in v3:
- Add append_tid() helper and use unique names to allow parallel testing
- Check create_network()'s return value through ASSERT_OK()
- Remove check_ping() and unused defines
- Change next_veth type (from string to int)
- Link to v2: https://lore.kernel.org/r/20250121-redirect-multi-v2-0-fc9cacabc6b2@xxxxxxxxxxx

Changes in v2:
- Use serial_test_* to avoid conflict between tests
- Link to v1: https://lore.kernel.org/r/20250121-redirect-multi-v1-0-b215e35ff505@xxxxxxxxxxx

---
Bastien Curutchet (eBPF Foundation) (14):
      selftests/bpf: helpers: Add append_tid()
      selftests/bpf: test_xdp_veth: Remove unused defines
      selftests/bpf: test_xdp_veth: Remove unecessarry check_ping()
      selftests/bpf: test_xdp_veth: Use int to describe next veth
      selftests/bpf: test_xdp_veth: Split network configuration
      selftests/bpf: test_xdp_veth: Rename config[]
      selftests/bpf: test_xdp_veth: Add prog_config[] table
      selftests/bpf: test_xdp_veth: Add XDP flags to prog_configuration
      selftests/bpf: test_xdp_veth: Use unique names
      selftests/bpf: test_xdp_veth: Add new test cases for XDP flags
      selftests/bpf: Optionally select broadcasting flags
      selftests/bpf: test_xdp_veth: Add XDP broadcast redirection tests
      selftests/bpf: test_xdp_veth: Add XDP program on egress test
      selftests/bpf: Remove test_xdp_redirect_multi.sh

 tools/testing/selftests/bpf/Makefile               |   2 -
 tools/testing/selftests/bpf/network_helpers.c      |  17 +
 tools/testing/selftests/bpf/network_helpers.h      |  12 +
 .../selftests/bpf/prog_tests/test_xdp_veth.c       | 588 ++++++++++++++++-----
 .../testing/selftests/bpf/progs/xdp_redirect_map.c |  89 ++++
 .../selftests/bpf/progs/xdp_redirect_multi_kern.c  |  41 +-
 .../selftests/bpf/test_xdp_redirect_multi.sh       | 214 --------
 tools/testing/selftests/bpf/xdp_redirect_multi.c   | 226 --------
 8 files changed, 615 insertions(+), 574 deletions(-)
---
base-commit: 421ec9c8f46a25743870a8cbaff76de293752e00
change-id: 20250103-redirect-multi-245d6eafb5d1

Best regards,
-- 
Bastien Curutchet (eBPF Foundation) <bastien.curutchet@xxxxxxxxxxx>