afef88e655
BPF object files are, in a way, the final artifact produced as part of the ahead-of-time compilation process. That makes them somewhat special compared to "regular" object files, which are a intermediate build artifacts that can typically be removed safely. As such, it can make sense to name them differently to make it easier to spot this difference at a glance. Among others, libbpf-bootstrap [0] has established the extension .bpf.o for BPF object files. It seems reasonable to follow this example and establish the same denomination for selftest build artifacts. To that end, this change adjusts the corresponding part of the build system and the test programs loading BPF object files to work with .bpf.o files. [0] https://github.com/libbpf/libbpf-bootstrap Suggested-by: Andrii Nakryiko <andrii@kernel.org> Signed-off-by: Daniel Müller <deso@posteo.net> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Link: https://lore.kernel.org/bpf/20220901222253.1199242-1-deso@posteo.net
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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