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selftests/bpf: Add link detach tests for cgroup, netns, and xdp bpf_links

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Add bpf_link__detach() testing to selftests for cgroup, netns, and xdp
bpf_links.

Signed-off-by: Andrii Nakryiko <andriin@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Song Liu <songliubraving@fb.com>
Acked-by: John Fastabend <john.fastabend@gmail.com>
Link: https://lore.kernel.org/bpf/20200731182830.286260-4-andriin@fb.com
This commit is contained in:
Andrii Nakryiko
2020-07-31 11:28:28 -07:00
committed by Alexei Starovoitov
parent 2e49527e52
commit 90806ccc90
5 changed files with 73 additions and 29 deletions
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14
tools/testing/selftests/bpf/testing_helpers.c
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@@ -64,3 +64,17 @@ int parse_num_list(const char *s, bool **num_set, int *num_set_len)
return 0;
}
__u32 link_info_prog_id(const struct bpf_link *link, struct bpf_link_info *info)
{
__u32 info_len = sizeof(*info);
int err;
memset(info, 0, sizeof(*info));
err = bpf_obj_get_info_by_fd(bpf_link__fd(link), info, &info_len);
if (err) {
printf("failed to get link info: %d\n", -errno);
return 0;
}
return info->prog_id;
}