selftests/bpf: Test bpf_link's get_next_id, get_fd_by_id, and get_obj_info

Extend bpf_obj_id selftest to verify bpf_link's observability APIs.

Signed-off-by: Andrii Nakryiko <andriin@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20200429001614.1544-7-andriin@fb.com

1 files changed, 3 insertions, 11 deletions

diff --git a/tools/testing/selftests/bpf/progs/test_obj_id.c b/tools/testing/selftests/bpf/progs/test_obj_id.c
index 98b9de2fafd0..ded71b3ff6b4 100644
--- a/tools/testing/selftests/bpf/progs/test_obj_id.c
+++ b/tools/testing/selftests/bpf/progs/test_obj_id.c
@@ -3,16 +3,8 @@
  */
 #include <stddef.h>
 #include <linux/bpf.h>
-#include <linux/pkt_cls.h>
 #include <bpf/bpf_helpers.h>
 
-/* It is a dumb bpf program such that it must have no
- * issue to be loaded since testing the verifier is
- * not the focus here.
- */
-
-int _version SEC("version") = 1;
-
 struct {
 	__uint(type, BPF_MAP_TYPE_ARRAY);
 	__uint(max_entries, 1);
@@ -20,13 +12,13 @@ struct {
 	__type(value, __u64);
 } test_map_id SEC(".maps");
 
-SEC("test_obj_id_dummy")
-int test_obj_id(struct __sk_buff *skb)
+SEC("raw_tp/sys_enter")
+int test_obj_id(void *ctx)
 {
 	__u32 key = 0;
 	__u64 *value;
 
 	value = bpf_map_lookup_elem(&test_map_id, &key);
 
-	return TC_ACT_OK;
+	return 0;
 }