Adding selftest for fentry/fexit multi func tests that attaches
to bpf_fentry_test* functions and checks argument values based
on the processed function.
Signed-off-by: Jiri Olsa <jolsa@xxxxxxxxxx>
---
tools/testing/selftests/bpf/Makefile | 4 ++-
.../bpf/prog_tests/multi_fentry_fexit_test.c | 32 +++++++++++++++++++
.../selftests/bpf/progs/multi_fentry_fexit.c | 28 ++++++++++++++++
3 files changed, 63 insertions(+), 1 deletion(-)
create mode 100644 tools/testing/selftests/bpf/prog_tests/multi_fentry_fexit_test.c
create mode 100644 tools/testing/selftests/bpf/progs/multi_fentry_fexit.c
diff --git a/tools/testing/selftests/bpf/Makefile b/tools/testing/selftests/bpf/Makefile
index 42b67834d803..236b6e0a36de 100644
--- a/tools/testing/selftests/bpf/Makefile
+++ b/tools/testing/selftests/bpf/Makefile
@@ -323,7 +323,8 @@ SKEL_BLACKLIST := btf__% test_pinning_invalid.c test_sk_assign.c
LINKED_SKELS := test_static_linked.skel.h linked_funcs.skel.h \
linked_vars.skel.h linked_maps.skel.h \
- multi_fentry_test.skel.h multi_fexit_test.skel.h
+ multi_fentry_test.skel.h multi_fexit_test.skel.h \
+ multi_fentry_fexit_test.skel.h
LSKELS := kfunc_call_test.c fentry_test.c fexit_test.c fexit_sleep.c \
test_ringbuf.c atomics.c trace_printk.c trace_vprintk.c
@@ -337,6 +338,7 @@ linked_vars.skel.h-deps := linked_vars1.o linked_vars2.o
linked_maps.skel.h-deps := linked_maps1.o linked_maps2.o
multi_fentry_test.skel.h-deps := multi_fentry.o multi_check.o
multi_fexit_test.skel.h-deps := multi_fexit.o multi_check.o
+multi_fentry_fexit_test.skel.h-deps := multi_fentry_fexit.o multi_check.o
LINKED_BPF_SRCS := $(patsubst %.o,%.c,$(foreach skel,$(LINKED_SKELS),$($(skel)-deps)))
diff --git a/tools/testing/selftests/bpf/prog_tests/multi_fentry_fexit_test.c b/tools/testing/selftests/bpf/prog_tests/multi_fentry_fexit_test.c
new file mode 100644
index 000000000000..d54abf36ab2f
--- /dev/null
+++ b/tools/testing/selftests/bpf/prog_tests/multi_fentry_fexit_test.c
@@ -0,0 +1,32 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <test_progs.h>
+#include "multi_fentry_fexit_test.skel.h"
+
+void test_multi_fentry_fexit_test(void)
+{
+ DECLARE_LIBBPF_OPTS(bpf_link_update_opts, link_upd_opts);
+ struct multi_fentry_fexit_test *skel = NULL;
+ __u32 duration = 0, retval;
+ int err, prog_fd;
+
+ skel = multi_fentry_fexit_test__open_and_load();
+ if (!ASSERT_OK_PTR(skel, "fentry_multi_skel_load"))
+ goto cleanup;
+
+ err = multi_fentry_fexit_test__attach(skel);
+ if (!ASSERT_OK(err, "fentry_fexit_attach"))
+ goto cleanup;
+
+ prog_fd = bpf_program__fd(skel->progs.test2);
+ err = bpf_prog_test_run(prog_fd, 1, NULL, 0,
+ NULL, NULL, &retval, &duration);
+ ASSERT_OK(err, "test_run");
+ ASSERT_EQ(retval, 0, "test_run");
+
+ ASSERT_EQ(skel->bss->test1_arg_result, 8, "test1_arg_result");
+ ASSERT_EQ(skel->bss->test2_arg_result, 8, "test2_arg_result");
+ ASSERT_EQ(skel->bss->test2_ret_result, 8, "test2_ret_result");
+
+cleanup:
+ multi_fentry_fexit_test__destroy(skel);
+}
diff --git a/tools/testing/selftests/bpf/progs/multi_fentry_fexit.c b/tools/testing/selftests/bpf/progs/multi_fentry_fexit.c
new file mode 100644
index 000000000000..54ee94d060b2
--- /dev/null
+++ b/tools/testing/selftests/bpf/progs/multi_fentry_fexit.c
@@ -0,0 +1,28 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <linux/bpf.h>
+#include <bpf/bpf_helpers.h>
+#include <bpf/bpf_tracing.h>
+
+char _license[] SEC("license") = "GPL";
+
+__u64 test1_arg_result = 0;
+__u64 test2_arg_result = 0;
+__u64 test2_ret_result = 0;
+
+__hidden extern void multi_arg_check(__u64 *ctx, __u64 *test_result);
+__hidden extern void multi_ret_check(void *ctx, __u64 *test_result);
+
+SEC("fentry.multi/bpf_fentry_test*")
+int BPF_PROG(test1, __u64 a, __u64 b, __u64 c, __u64 d, __u64 e, __u64 f)
+{
+ multi_arg_check(ctx, &test1_arg_result);
+ return 0;
+}
+
+SEC("fexit.multi/bpf_fentry_test*")
+int BPF_PROG(test2, __u64 a, __u64 b, __u64 c, __u64 d, __u64 e, __u64 f, int ret)
+{
+ multi_arg_check(ctx, &test2_arg_result);
+ multi_ret_check(ctx, &test2_ret_result);
+ return 0;
+}
--
2.31.1
