90 lines
2.3 KiB
C
90 lines
2.3 KiB
C
// SPDX-License-Identifier: GPL-2.0
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#include <test_progs.h>
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struct bss {
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unsigned did_run;
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unsigned iters;
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unsigned sum;
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};
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struct rdonly_map_subtest {
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const char *subtest_name;
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const char *prog_name;
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unsigned exp_iters;
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unsigned exp_sum;
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};
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void test_rdonly_maps(void)
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{
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const char *file = "test_rdonly_maps.bpf.o";
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struct rdonly_map_subtest subtests[] = {
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{ "skip loop", "skip_loop", 0, 0 },
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{ "part loop", "part_loop", 3, 2 + 3 + 4 },
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{ "full loop", "full_loop", 4, 2 + 3 + 4 + 5 },
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};
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int i, err, zero = 0, duration = 0;
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struct bpf_link *link = NULL;
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struct bpf_program *prog;
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struct bpf_map *bss_map;
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struct bpf_object *obj;
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struct bss bss;
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obj = bpf_object__open_file(file, NULL);
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if (!ASSERT_OK_PTR(obj, "obj_open"))
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return;
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err = bpf_object__load(obj);
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if (CHECK(err, "obj_load", "err %d errno %d\n", err, errno))
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goto cleanup;
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bss_map = bpf_object__find_map_by_name(obj, ".bss");
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if (CHECK(!bss_map, "find_bss_map", "failed\n"))
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goto cleanup;
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for (i = 0; i < ARRAY_SIZE(subtests); i++) {
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const struct rdonly_map_subtest *t = &subtests[i];
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if (!test__start_subtest(t->subtest_name))
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continue;
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prog = bpf_object__find_program_by_name(obj, t->prog_name);
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if (CHECK(!prog, "find_prog", "prog '%s' not found\n",
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t->prog_name))
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goto cleanup;
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memset(&bss, 0, sizeof(bss));
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err = bpf_map_update_elem(bpf_map__fd(bss_map), &zero, &bss, 0);
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if (CHECK(err, "set_bss", "failed to set bss data: %d\n", err))
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goto cleanup;
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link = bpf_program__attach_raw_tracepoint(prog, "sys_enter");
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if (!ASSERT_OK_PTR(link, "attach_prog"))
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goto cleanup;
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/* trigger probe */
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usleep(1);
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bpf_link__destroy(link);
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link = NULL;
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err = bpf_map_lookup_elem(bpf_map__fd(bss_map), &zero, &bss);
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if (CHECK(err, "get_bss", "failed to get bss data: %d\n", err))
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goto cleanup;
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if (CHECK(bss.did_run == 0, "check_run",
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"prog '%s' didn't run?\n", t->prog_name))
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goto cleanup;
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if (CHECK(bss.iters != t->exp_iters, "check_iters",
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"prog '%s' iters: %d, expected: %d\n",
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t->prog_name, bss.iters, t->exp_iters))
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goto cleanup;
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if (CHECK(bss.sum != t->exp_sum, "check_sum",
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"prog '%s' sum: %d, expected: %d\n",
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t->prog_name, bss.sum, t->exp_sum))
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goto cleanup;
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}
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cleanup:
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bpf_link__destroy(link);
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bpf_object__close(obj);
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}
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