Adding tests for tracing multi link session.
Signed-off-by: Jiri Olsa <[email protected]>
---
tools/testing/selftests/bpf/Makefile | 4 ++-
.../selftests/bpf/prog_tests/tracing_multi.c | 31 +++++++++++++++++++
.../bpf/progs/tracing_multi_session_attach.c | 27 ++++++++++++++++
3 files changed, 61 insertions(+), 1 deletion(-)
create mode 100644
tools/testing/selftests/bpf/progs/tracing_multi_session_attach.c
diff --git a/tools/testing/selftests/bpf/Makefile
b/tools/testing/selftests/bpf/Makefile
index 0cbc9bcb9a2e..b415d64bf0d1 100644
--- a/tools/testing/selftests/bpf/Makefile
+++ b/tools/testing/selftests/bpf/Makefile
@@ -482,7 +482,8 @@ LINKED_SKELS := test_static_linked.skel.h
linked_funcs.skel.h \
linked_vars.skel.h linked_maps.skel.h \
test_subskeleton.skel.h test_subskeleton_lib.skel.h \
test_usdt.skel.h tracing_multi.skel.h \
- tracing_multi_intersect.skel.h
+ tracing_multi_intersect.skel.h \
+ tracing_multi_session.skel.h
LSKELS := fexit_sleep.c trace_printk.c trace_vprintk.c map_ptr_kern.c \
core_kern.c core_kern_overflow.c test_ringbuf.c \
@@ -510,6 +511,7 @@ xdp_hw_metadata.skel.h-deps := xdp_hw_metadata.bpf.o
xdp_features.skel.h-deps := xdp_features.bpf.o
tracing_multi.skel.h-deps := tracing_multi_attach.bpf.o
tracing_multi_check.bpf.o
tracing_multi_intersect.skel.h-deps := tracing_multi_intersect_attach.bpf.o
tracing_multi_check.bpf.o
+tracing_multi_session.skel.h-deps := tracing_multi_session_attach.bpf.o
tracing_multi_check.bpf.o
LINKED_BPF_OBJS := $(foreach skel,$(LINKED_SKELS),$($(skel)-deps))
LINKED_BPF_SRCS := $(patsubst %.bpf.o,%.c,$(LINKED_BPF_OBJS))
diff --git a/tools/testing/selftests/bpf/prog_tests/tracing_multi.c
b/tools/testing/selftests/bpf/prog_tests/tracing_multi.c
index 1bab4c3ea808..3d9327b80e88 100644
--- a/tools/testing/selftests/bpf/prog_tests/tracing_multi.c
+++ b/tools/testing/selftests/bpf/prog_tests/tracing_multi.c
@@ -6,6 +6,7 @@
#include "bpf/libbpf_internal.h"
#include "tracing_multi.skel.h"
#include "tracing_multi_intersect.skel.h"
+#include "tracing_multi_session.skel.h"
#include "trace_helpers.h"
static __u64 bpf_fentry_test_cookies[] = {
@@ -311,6 +312,34 @@ static void test_intersect(void)
tracing_multi_intersect__destroy(skel);
}
+static void test_session(void)
+{
+ LIBBPF_OPTS(bpf_test_run_opts, topts);
+ struct tracing_multi_session *skel;
+ int err, prog_fd;
+
+ skel = tracing_multi_session__open_and_load();
+ if (!ASSERT_OK_PTR(skel, "tracing_multi_session__open_and_load"))
+ return;
+
+ skel->bss->pid = getpid();
+
+ err = tracing_multi_session__attach(skel);
+ if (!ASSERT_OK(err, "tracing_multi_session__attach"))
+ goto cleanup;
+
+ prog_fd = bpf_program__fd(skel->progs.test_session);
+ err = bpf_prog_test_run_opts(prog_fd, &topts);
+ ASSERT_OK(err, "test_run");
+
+ ASSERT_EQ(skel->bss->test_result_fentry, 10, "test_result_fentry");
+ /* extra count for test_result_fexit cookie */
+ ASSERT_EQ(skel->bss->test_result_fexit, 20, "test_result_fexit");
+
+cleanup:
+ tracing_multi_session__destroy(skel);
+}
+
void test_tracing_multi_test(void)
{
#ifndef __x86_64__
@@ -328,4 +357,6 @@ void test_tracing_multi_test(void)
test_intersect();
if (test__start_subtest("cookies"))
test_link_api_ids(true);
+ if (test__start_subtest("session"))
+ test_session();
}
diff --git a/tools/testing/selftests/bpf/progs/tracing_multi_session_attach.c
b/tools/testing/selftests/bpf/progs/tracing_multi_session_attach.c
new file mode 100644
index 000000000000..9d717018a00f
--- /dev/null
+++ b/tools/testing/selftests/bpf/progs/tracing_multi_session_attach.c
@@ -0,0 +1,27 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <vmlinux.h>
+#include <bpf/bpf_helpers.h>
+#include <bpf/bpf_tracing.h>
+
+char _license[] SEC("license") = "GPL";
+
+__hidden extern int tracing_multi_arg_check(__u64 *ctx, __u64 *test_result,
bool is_return);
+
+__u64 test_result_fentry = 0;
+__u64 test_result_fexit = 0;
+
+SEC("fsession.multi/bpf_fentry_test*")
+int BPF_PROG(test_session)
+{
+ volatile __u64 *cookie = bpf_session_cookie(ctx);
+
+ if (bpf_session_is_return(ctx)) {
+ tracing_multi_arg_check(ctx, &test_result_fexit, true);
+ /* extra count for test_result_fexit cookie */
+ test_result_fexit += *cookie == 0xbeafbeafbeafbeaf;
+ } else {
+ tracing_multi_arg_check(ctx, &test_result_fentry, false);
+ *cookie = 0xbeafbeafbeafbeaf;
+ }
+ return 0;
+}
--
2.52.0
