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selftests/bpf: Add cookies check for raw_tp fill_link_info test

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Adding tests for getting cookie with fill_link_info for raw_tp.

Signed-off-by: Tao Chen <chen.dylane@linux.dev>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Link: https://lore.kernel.org/bpf/20250603154309.3063644-2-chen.dylane@linux.dev
This commit is contained in:
Tao Chen 2025-06-03 23:43:08 +08:00 committed by Andrii Nakryiko
parent 2fe1c59347
commit 25a0d04d38
1 changed files with 25 additions and 1 deletions
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26
tools/testing/selftests/bpf/prog_tests/bpf_cookie.c
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@ -635,10 +635,29 @@ static void tp_btf_subtest(struct test_bpf_cookie *skel)
bpf_link__destroy(link);
}
static int verify_raw_tp_link_info(int fd, u64 cookie)
{
struct bpf_link_info info;
int err;
u32 len = sizeof(info);
memset(&info, 0, sizeof(info));
err = bpf_link_get_info_by_fd(fd, &info, &len);
if (!ASSERT_OK(err, "get_link_info"))
return -1;
if (!ASSERT_EQ(info.type, BPF_LINK_TYPE_RAW_TRACEPOINT, "link_type"))
return -1;
ASSERT_EQ(info.raw_tracepoint.cookie, cookie, "raw_tp_cookie");
return 0;
}
static void raw_tp_subtest(struct test_bpf_cookie *skel)
{
__u64 cookie;
int prog_fd, link_fd = -1;
int err, prog_fd, link_fd = -1;
struct bpf_link *link = NULL;
LIBBPF_OPTS(bpf_raw_tp_opts, raw_tp_opts);
LIBBPF_OPTS(bpf_raw_tracepoint_opts, opts);
@ -656,6 +675,11 @@ static void raw_tp_subtest(struct test_bpf_cookie *skel)
goto cleanup;
usleep(1); /* trigger */
err = verify_raw_tp_link_info(link_fd, cookie);
if (!ASSERT_OK(err, "verify_raw_tp_link_info"))
goto cleanup;
close(link_fd); /* detach */
link_fd = -1;