diff options
Diffstat (limited to 'tools/testing/selftests/bpf/prog_tests/kfree_skb.c')
| -rw-r--r-- | tools/testing/selftests/bpf/prog_tests/kfree_skb.c | 39 |
1 files changed, 36 insertions, 3 deletions
diff --git a/tools/testing/selftests/bpf/prog_tests/kfree_skb.c b/tools/testing/selftests/bpf/prog_tests/kfree_skb.c index 55d36856e621..7507c8f689bc 100644 --- a/tools/testing/selftests/bpf/prog_tests/kfree_skb.c +++ b/tools/testing/selftests/bpf/prog_tests/kfree_skb.c @@ -60,15 +60,17 @@ void test_kfree_skb(void) .file = "./kfree_skb.o", }; + struct bpf_link *link = NULL, *link_fentry = NULL, *link_fexit = NULL; + struct bpf_map *perf_buf_map, *global_data; + struct bpf_program *prog, *fentry, *fexit; struct bpf_object *obj, *obj2 = NULL; struct perf_buffer_opts pb_opts = {}; struct perf_buffer *pb = NULL; - struct bpf_link *link = NULL; - struct bpf_map *perf_buf_map; - struct bpf_program *prog; int err, kfree_skb_fd; bool passed = false; __u32 duration = 0; + const int zero = 0; + bool test_ok[2]; err = bpf_prog_load("./test_pkt_access.o", BPF_PROG_TYPE_SCHED_CLS, &obj, &tattr.prog_fd); @@ -82,9 +84,28 @@ void test_kfree_skb(void) prog = bpf_object__find_program_by_title(obj2, "tp_btf/kfree_skb"); if (CHECK(!prog, "find_prog", "prog kfree_skb not found\n")) goto close_prog; + fentry = bpf_object__find_program_by_title(obj2, "fentry/eth_type_trans"); + if (CHECK(!fentry, "find_prog", "prog eth_type_trans not found\n")) + goto close_prog; + fexit = bpf_object__find_program_by_title(obj2, "fexit/eth_type_trans"); + if (CHECK(!fexit, "find_prog", "prog eth_type_trans not found\n")) + goto close_prog; + + global_data = bpf_object__find_map_by_name(obj2, "kfree_sk.bss"); + if (CHECK(!global_data, "find global data", "not found\n")) + goto close_prog; + link = bpf_program__attach_raw_tracepoint(prog, NULL); if (CHECK(IS_ERR(link), "attach_raw_tp", "err %ld\n", PTR_ERR(link))) goto close_prog; + link_fentry = bpf_program__attach_trace(fentry); + if (CHECK(IS_ERR(link_fentry), "attach fentry", "err %ld\n", + PTR_ERR(link_fentry))) + goto close_prog; + link_fexit = bpf_program__attach_trace(fexit); + if (CHECK(IS_ERR(link_fexit), "attach fexit", "err %ld\n", + PTR_ERR(link_fexit))) + goto close_prog; perf_buf_map = bpf_object__find_map_by_name(obj2, "perf_buf_map"); if (CHECK(!perf_buf_map, "find_perf_buf_map", "not found\n")) @@ -108,14 +129,26 @@ void test_kfree_skb(void) err = perf_buffer__poll(pb, 100); if (CHECK(err < 0, "perf_buffer__poll", "err %d\n", err)) goto close_prog; + /* make sure kfree_skb program was triggered * and it sent expected skb into ring buffer */ CHECK_FAIL(!passed); + + err = bpf_map_lookup_elem(bpf_map__fd(global_data), &zero, test_ok); + if (CHECK(err, "get_result", + "failed to get output data: %d\n", err)) + goto close_prog; + + CHECK_FAIL(!test_ok[0] || !test_ok[1]); close_prog: perf_buffer__free(pb); if (!IS_ERR_OR_NULL(link)) bpf_link__destroy(link); + if (!IS_ERR_OR_NULL(link_fentry)) + bpf_link__destroy(link_fentry); + if (!IS_ERR_OR_NULL(link_fexit)) + bpf_link__destroy(link_fexit); bpf_object__close(obj); bpf_object__close(obj2); } |