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Message-Id: <20210826193922.66204-24-jolsa@kernel.org>
Date: Thu, 26 Aug 2021 21:39:18 +0200
From: Jiri Olsa <jolsa@...hat.com>
To: Alexei Starovoitov <ast@...nel.org>,
Daniel Borkmann <daniel@...earbox.net>,
Andrii Nakryiko <andriin@...com>,
"Steven Rostedt (VMware)" <rostedt@...dmis.org>
Cc: netdev@...r.kernel.org, bpf@...r.kernel.org,
Martin KaFai Lau <kafai@...com>,
Song Liu <songliubraving@...com>, Yonghong Song <yhs@...com>,
John Fastabend <john.fastabend@...il.com>,
KP Singh <kpsingh@...omium.org>, Daniel Xu <dxu@...uu.xyz>,
Viktor Malik <vmalik@...hat.com>
Subject: [PATCH bpf-next v4 23/27] selftests/bpf: Add fexit multi func test
Adding selftest for fexit multi func test that attaches
to bpf_fentry_test* functions and checks argument values
based on the processed function.
Signed-off-by: Jiri Olsa <jolsa@...nel.org>
---
tools/testing/selftests/bpf/Makefile | 3 +-
.../bpf/prog_tests/multi_fexit_test.c | 31 +++++++++++++++++++
.../testing/selftests/bpf/progs/multi_check.c | 22 +++++++++++++
.../testing/selftests/bpf/progs/multi_fexit.c | 20 ++++++++++++
4 files changed, 75 insertions(+), 1 deletion(-)
create mode 100644 tools/testing/selftests/bpf/prog_tests/multi_fexit_test.c
create mode 100644 tools/testing/selftests/bpf/progs/multi_fexit.c
diff --git a/tools/testing/selftests/bpf/Makefile b/tools/testing/selftests/bpf/Makefile
index 013d41c8edae..8da3be0972de 100644
--- a/tools/testing/selftests/bpf/Makefile
+++ b/tools/testing/selftests/bpf/Makefile
@@ -313,7 +313,7 @@ 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_fentry_test.skel.h multi_fexit_test.skel.h
LSKELS := kfunc_call_test.c fentry_test.c fexit_test.c fexit_sleep.c \
test_ksyms_module.c test_ringbuf.c atomics.c trace_printk.c
@@ -324,6 +324,7 @@ linked_funcs.skel.h-deps := linked_funcs1.o linked_funcs2.o
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
LINKED_BPF_SRCS := $(patsubst %.o,%.c,$(foreach skel,$(LINKED_SKELS),$($(skel)-deps)))
diff --git a/tools/testing/selftests/bpf/prog_tests/multi_fexit_test.c b/tools/testing/selftests/bpf/prog_tests/multi_fexit_test.c
new file mode 100644
index 000000000000..d9b0eedd9f45
--- /dev/null
+++ b/tools/testing/selftests/bpf/prog_tests/multi_fexit_test.c
@@ -0,0 +1,31 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <test_progs.h>
+#include "multi_fexit_test.skel.h"
+#include "trace_helpers.h"
+
+void test_multi_fexit_test(void)
+{
+ struct multi_fexit_test *skel = NULL;
+ __u32 duration = 0, retval;
+ int err, prog_fd;
+
+ skel = multi_fexit_test__open_and_load();
+ if (!ASSERT_OK_PTR(skel, "fexit_multi_skel_load"))
+ goto cleanup;
+
+ err = multi_fexit_test__attach(skel);
+ if (!ASSERT_OK(err, "fexit_attach"))
+ goto cleanup;
+
+ prog_fd = bpf_program__fd(skel->progs.test);
+ 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->test_arg_result, 8, "fexit_multi_arg_result");
+ ASSERT_EQ(skel->bss->test_ret_result, 8, "fexit_multi_ret_result");
+
+cleanup:
+ multi_fexit_test__destroy(skel);
+}
diff --git a/tools/testing/selftests/bpf/progs/multi_check.c b/tools/testing/selftests/bpf/progs/multi_check.c
index 415c96684a30..80ebbefaa8cd 100644
--- a/tools/testing/selftests/bpf/progs/multi_check.c
+++ b/tools/testing/selftests/bpf/progs/multi_check.c
@@ -61,3 +61,25 @@ void multi_arg_check(__u64 *ctx, __u64 *test_result)
*test_result += 1;
}
}
+
+void multi_ret_check(void *ctx, int ret, __u64 *test_result)
+{
+ void *ip = (void *) bpf_get_func_ip(ctx);
+
+ if (ip == &bpf_fentry_test1)
+ *test_result += ret == 2;
+ else if (ip == &bpf_fentry_test2)
+ *test_result += ret == 5;
+ else if (ip == &bpf_fentry_test3)
+ *test_result += ret == 15;
+ else if (ip == &bpf_fentry_test4)
+ *test_result += ret == 34;
+ else if (ip == &bpf_fentry_test5)
+ *test_result += ret == 65;
+ else if (ip == &bpf_fentry_test6)
+ *test_result += ret == 111;
+ else if (ip == &bpf_fentry_test7)
+ *test_result += ret == 0;
+ else if (ip == &bpf_fentry_test8)
+ *test_result += ret == 0;
+}
diff --git a/tools/testing/selftests/bpf/progs/multi_fexit.c b/tools/testing/selftests/bpf/progs/multi_fexit.c
new file mode 100644
index 000000000000..29c49aa3bfc2
--- /dev/null
+++ b/tools/testing/selftests/bpf/progs/multi_fexit.c
@@ -0,0 +1,20 @@
+// 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";
+
+__hidden extern void multi_arg_check(__u64 *ctx, __u64 *test_result);
+__hidden extern void multi_ret_check(void *ctx, int ret, __u64 *test_result);
+
+__u64 test_arg_result = 0;
+__u64 test_ret_result = 0;
+
+SEC("fexit.multi/bpf_fentry_test*")
+int BPF_PROG(test, __u64 a, __u64 b, __u64 c, __u64 d, __u64 e, __u64 f, int ret)
+{
+ multi_arg_check(ctx, &test_arg_result);
+ multi_ret_check(ctx, ret, &test_ret_result);
+ return 0;
+}
--
2.31.1
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