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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
commit | 2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch) | |
tree | 848558de17fb3008cdf4d861b01ac7781903ce39 /tools/testing/selftests/bpf/prog_tests/global_func_args.c | |
parent | Initial commit. (diff) | |
download | linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip |
Adding upstream version 6.1.76.upstream/6.1.76
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'tools/testing/selftests/bpf/prog_tests/global_func_args.c')
-rw-r--r-- | tools/testing/selftests/bpf/prog_tests/global_func_args.c | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/tools/testing/selftests/bpf/prog_tests/global_func_args.c b/tools/testing/selftests/bpf/prog_tests/global_func_args.c new file mode 100644 index 000000000..d997099f6 --- /dev/null +++ b/tools/testing/selftests/bpf/prog_tests/global_func_args.c @@ -0,0 +1,62 @@ +// SPDX-License-Identifier: GPL-2.0 +#include "test_progs.h" +#include "network_helpers.h" + +static __u32 duration; + +static void test_global_func_args0(struct bpf_object *obj) +{ + int err, i, map_fd, actual_value; + const char *map_name = "values"; + + map_fd = bpf_find_map(__func__, obj, map_name); + if (CHECK(map_fd < 0, "bpf_find_map", "cannot find BPF map %s: %s\n", + map_name, strerror(errno))) + return; + + struct { + const char *descr; + int expected_value; + } tests[] = { + {"passing NULL pointer", 0}, + {"returning value", 1}, + {"reading local variable", 100 }, + {"writing local variable", 101 }, + {"reading global variable", 42 }, + {"writing global variable", 43 }, + {"writing to pointer-to-pointer", 1 }, + }; + + for (i = 0; i < ARRAY_SIZE(tests); ++i) { + const int expected_value = tests[i].expected_value; + + err = bpf_map_lookup_elem(map_fd, &i, &actual_value); + + CHECK(err || actual_value != expected_value, tests[i].descr, + "err %d result %d expected %d\n", err, actual_value, expected_value); + } +} + +void test_global_func_args(void) +{ + const char *file = "./test_global_func_args.bpf.o"; + struct bpf_object *obj; + int err, prog_fd; + LIBBPF_OPTS(bpf_test_run_opts, topts, + .data_in = &pkt_v4, + .data_size_in = sizeof(pkt_v4), + .repeat = 1, + ); + + err = bpf_prog_test_load(file, BPF_PROG_TYPE_CGROUP_SKB, &obj, &prog_fd); + if (CHECK(err, "load program", "error %d loading %s\n", err, file)) + return; + + err = bpf_prog_test_run_opts(prog_fd, &topts); + ASSERT_OK(err, "test_run"); + ASSERT_OK(topts.retval, "test_run retval"); + + test_global_func_args0(obj); + + bpf_object__close(obj); +} |