selftests/bpf: add proper section name to bpf prog and rename it

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test_skb_cgroup_id_kern.c is currently involved in a manual test. In its
current form, it can not be used with the auto-generated skeleton APIs,
because the section name is not valid to allow libbpf to deduce the program
type.

Update section name to allow skeleton APIs usage. Also rename the program
name to make it shorter and more straighforward regarding the API it is
testing. While doing so, make sure that test_skb_cgroup_id.sh passes to get
a working reference before converting it to test_progs
- update the obj name
- fix loading issue (verifier rejecting the program when loaded through tc,
  because of map not found), by preloading the whole obj with bpftool

Reviewed-by: Alan Maguire <alan.maguire@oracle.com>
Signed-off-by: Alexis Lothoré (eBPF Foundation) <alexis.lothore@bootlin.com>
Link: https://lore.kernel.org/r/20240813-convert_cgroup_tests-v4-3-a33c03458cf6@bootlin.com
Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org>

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Alexis Lothoré (eBPF Foundation) 2024-08-13 14:45:07 +02:00 • committed by Martin KaFai Lau

parent 37a14cfd66

commit 7b4400a0a6

3 changed files with 53 additions and 49 deletions

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2

tools/testing/selftests/bpf/progs/test_skb_cgroup_id_kern.c → tools/testing/selftests/bpf/progs/cgroup_ancestor.c

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12

tools/testing/selftests/bpf/test_skb_cgroup_id.sh

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