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c456f08040
Add three success test cases to test the flattening of array of nested struct. For these three tests, the number of special fields in map is BTF_FIELDS_MAX, but the array is defined in structs with different nested level. Add one failure test case for the flattening as well. In the test case, the number of special fields in map is BTF_FIELDS_MAX + 1. It will make btf_parse_fields() in map_create() return -E2BIG, the creation of map will succeed, but the load of program will fail because the btf_record is invalid for the map. Signed-off-by: Hou Tao <houtao1@huawei.com> Acked-by: Eduard Zingerman <eddyz87@gmail.com> Link: https://lore.kernel.org/r/20241008071114.3718177-3-houtao@huaweicloud.com Signed-off-by: Alexei Starovoitov <ast@kernel.org>
84 lines
2.0 KiB
C
84 lines
2.0 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/* Copyright (c) 2023 Meta Platforms, Inc. and affiliates. */
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#include <test_progs.h>
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#include "cpumask_failure.skel.h"
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#include "cpumask_success.skel.h"
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static const char * const cpumask_success_testcases[] = {
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"test_alloc_free_cpumask",
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"test_set_clear_cpu",
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"test_setall_clear_cpu",
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"test_first_firstzero_cpu",
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"test_firstand_nocpu",
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"test_test_and_set_clear",
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"test_and_or_xor",
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"test_intersects_subset",
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"test_copy_any_anyand",
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"test_insert_leave",
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"test_insert_remove_release",
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"test_global_mask_rcu",
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"test_global_mask_array_one_rcu",
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"test_global_mask_array_rcu",
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"test_global_mask_array_l2_rcu",
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"test_global_mask_nested_rcu",
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"test_global_mask_nested_deep_rcu",
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"test_global_mask_nested_deep_array_rcu",
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"test_cpumask_weight",
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};
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static void verify_success(const char *prog_name)
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{
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struct cpumask_success *skel;
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struct bpf_program *prog;
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struct bpf_link *link = NULL;
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pid_t child_pid;
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int status, err;
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skel = cpumask_success__open();
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if (!ASSERT_OK_PTR(skel, "cpumask_success__open"))
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return;
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skel->bss->pid = getpid();
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skel->bss->nr_cpus = libbpf_num_possible_cpus();
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err = cpumask_success__load(skel);
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if (!ASSERT_OK(err, "cpumask_success__load"))
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goto cleanup;
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prog = bpf_object__find_program_by_name(skel->obj, prog_name);
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if (!ASSERT_OK_PTR(prog, "bpf_object__find_program_by_name"))
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goto cleanup;
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link = bpf_program__attach(prog);
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if (!ASSERT_OK_PTR(link, "bpf_program__attach"))
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goto cleanup;
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child_pid = fork();
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if (!ASSERT_GT(child_pid, -1, "child_pid"))
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goto cleanup;
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if (child_pid == 0)
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_exit(0);
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waitpid(child_pid, &status, 0);
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ASSERT_OK(skel->bss->err, "post_wait_err");
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cleanup:
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bpf_link__destroy(link);
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cpumask_success__destroy(skel);
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}
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void test_cpumask(void)
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{
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int i;
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for (i = 0; i < ARRAY_SIZE(cpumask_success_testcases); i++) {
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if (!test__start_subtest(cpumask_success_testcases[i]))
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continue;
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verify_success(cpumask_success_testcases[i]);
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}
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RUN_TESTS(cpumask_success);
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RUN_TESTS(cpumask_failure);
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}
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