Similar to tools/testing/selftests/bpf/prog_tests/dynptr.c:
we declare an array of tests that we run one by one in a for loop.
Followup patches will add more similar-ish tests, so avoid a lot of copy
paste by grouping the declaration in an array.
To be able to call bpf_object__find_program_by_name(), we need to use
plain libbpf calls, and not light skeletons. So also change the Makefile
to not generate light skeletons.
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@xxxxxxxxxx>
---
new in v10
---
tools/testing/selftests/bpf/Makefile | 2 +-
.../selftests/bpf/prog_tests/kfunc_call.c | 56 +++++++++++++------
2 files changed, 39 insertions(+), 19 deletions(-)
diff --git a/tools/testing/selftests/bpf/Makefile b/tools/testing/selftests/bpf/Makefile
index eecad99f1735..b19b0b35aec8 100644
--- a/tools/testing/selftests/bpf/Makefile
+++ b/tools/testing/selftests/bpf/Makefile
@@ -351,7 +351,7 @@ LINKED_SKELS := test_static_linked.skel.h linked_funcs.skel.h \
test_subskeleton.skel.h test_subskeleton_lib.skel.h \
test_usdt.skel.h
-LSKELS := kfunc_call_test.c fentry_test.c fexit_test.c fexit_sleep.c \
+LSKELS := fentry_test.c fexit_test.c fexit_sleep.c \
test_ringbuf.c atomics.c trace_printk.c trace_vprintk.c \
map_ptr_kern.c core_kern.c core_kern_overflow.c
# Generate both light skeleton and libbpf skeleton for these
diff --git a/tools/testing/selftests/bpf/prog_tests/kfunc_call.c b/tools/testing/selftests/bpf/prog_tests/kfunc_call.c
index eede7c304f86..21e347f46c93 100644
--- a/tools/testing/selftests/bpf/prog_tests/kfunc_call.c
+++ b/tools/testing/selftests/bpf/prog_tests/kfunc_call.c
@@ -2,16 +2,28 @@
/* Copyright (c) 2021 Facebook */
#include <test_progs.h>
#include <network_helpers.h>
-#include "kfunc_call_test.lskel.h"
+#include "kfunc_call_test.skel.h"
#include "kfunc_call_test_subprog.skel.h"
#include "kfunc_call_test_subprog.lskel.h"
#include "kfunc_call_destructive.skel.h"
#include "cap_helpers.h"
-static void test_main(void)
+struct kfunc_test_params {
+ const char *prog_name;
+ int retval;
+};
+
+static struct kfunc_test_params kfunc_tests[] = {
+ {"kfunc_call_test1", 12},
+ {"kfunc_call_test2", 3},
+ {"kfunc_call_test_ref_btf_id", 0},
+};
+
+static void verify_success(struct kfunc_test_params *param)
{
- struct kfunc_call_test_lskel *skel;
+ struct kfunc_call_test *skel;
+ struct bpf_program *prog;
int prog_fd, err;
LIBBPF_OPTS(bpf_test_run_opts, topts,
.data_in = &pkt_v4,
@@ -19,26 +31,35 @@ static void test_main(void)
.repeat = 1,
);
- skel = kfunc_call_test_lskel__open_and_load();
+ skel = kfunc_call_test__open_and_load();
if (!ASSERT_OK_PTR(skel, "skel"))
return;
- prog_fd = skel->progs.kfunc_call_test1.prog_fd;
- err = bpf_prog_test_run_opts(prog_fd, &topts);
- ASSERT_OK(err, "bpf_prog_test_run(test1)");
- ASSERT_EQ(topts.retval, 12, "test1-retval");
+ prog = bpf_object__find_program_by_name(skel->obj, param->prog_name);
+ if (!ASSERT_OK_PTR(prog, "bpf_object__find_program_by_name"))
+ goto cleanup;
- prog_fd = skel->progs.kfunc_call_test2.prog_fd;
+ prog_fd = bpf_program__fd(prog);
err = bpf_prog_test_run_opts(prog_fd, &topts);
- ASSERT_OK(err, "bpf_prog_test_run(test2)");
- ASSERT_EQ(topts.retval, 3, "test2-retval");
+ if (!ASSERT_OK(err, param->prog_name))
+ goto cleanup;
- prog_fd = skel->progs.kfunc_call_test_ref_btf_id.prog_fd;
- err = bpf_prog_test_run_opts(prog_fd, &topts);
- ASSERT_OK(err, "bpf_prog_test_run(test_ref_btf_id)");
- ASSERT_EQ(topts.retval, 0, "test_ref_btf_id-retval");
+ ASSERT_EQ(topts.retval, param->retval, "retval");
+
+cleanup:
+ kfunc_call_test__destroy(skel);
+}
+
+static void test_main(void)
+{
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(kfunc_tests); i++) {
+ if (!test__start_subtest(kfunc_tests[i].prog_name))
+ continue;
- kfunc_call_test_lskel__destroy(skel);
+ verify_success(&kfunc_tests[i]);
+ }
}
static void test_subprog(void)
@@ -121,8 +142,7 @@ static void test_destructive(void)
void test_kfunc_call(void)
{
- if (test__start_subtest("main"))
- test_main();
+ test_main();
if (test__start_subtest("subprog"))
test_subprog();
--
2.36.1
