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// SPDX-License-Identifier: GPL-2.0
/* Copyright (c) 2026 Meta Platforms, Inc. and affiliates. */
#include <test_progs.h>
#include "struct_ops_nullable.skel.h"
#include "struct_ops_nullable_fail.skel.h"
#include "struct_ops_nullable_fail__percpu.skel.h"
#include "struct_ops_nullable_probed__plain.skel.h"
#include "struct_ops_nullable_probed__scalar.skel.h"
#include "struct_ops_nullable_probed__untrusted.skel.h"
/*
* Attach a callback that gets a trusted and a trusted __nullable task pointer
* through its argument struct and drive it through the
* bpf_testmod_ops3_call_test_nullable() kfunc.
*/
static void nullable_member(void)
{
LIBBPF_OPTS(bpf_test_run_opts, topts);
struct struct_ops_nullable *skel;
struct bpf_link *link;
int err;
skel = struct_ops_nullable__open_and_load();
if (!ASSERT_OK_PTR(skel, "struct_ops_nullable__open_and_load"))
return;
link = bpf_map__attach_struct_ops(skel->maps.testmod_nullable);
if (!ASSERT_OK_PTR(link, "attach_struct_ops"))
goto out;
err = bpf_prog_test_run_opts(bpf_program__fd(skel->progs.trigger), &topts);
ASSERT_OK(err, "test_run");
ASSERT_EQ(topts.retval, 0, "trigger_retval");
bpf_link__destroy(link);
out:
struct_ops_nullable__destroy(skel);
}
/* Serialized because it attaches the singleton bpf_testmod_ops3. */
void serial_test_struct_ops_nullable(void)
{
int has_tag;
/* the tag reaches the module BTF only from a toolchain with btf_type_tag support */
has_tag = testmod_member_has_type_tag("bpf_testmod_nullable_args", "task_or_null", "nullable");
if (!ASSERT_GE(has_tag, 0, "testmod_btf"))
return;
if (!has_tag) {
printf("%s:SKIP: no nullable type tag in the bpf_testmod BTF\n", __func__);
test__skip();
return;
}
if (test__start_subtest("nullable_member"))
nullable_member();
RUN_TESTS(struct_ops_nullable_fail);
RUN_TESTS(struct_ops_nullable_fail__percpu);
RUN_TESTS(struct_ops_nullable_probed__plain);
RUN_TESTS(struct_ops_nullable_probed__scalar);
RUN_TESTS(struct_ops_nullable_probed__untrusted);
}
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