84b4c52960
bpf_program__load is not supposed to be used directly. Replace it with bpf_object__ APIs for the reference_tracking prog_test, which is the last offender in bpf selftests. Some additional complexity is added for this test, namely the use of one bpf_object to iterate through progs, while a second bpf_object is created and opened/closed to test actual loading of progs. This is because the test was doing bpf_program__load then __unload to test loading of individual progs and same semantics with bpf_object__load/__unload result in failure to load an __unload-ed obj. Signed-off-by: Dave Marchevsky <davemarchevsky@fb.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Acked-by: Andrii Nakryiko <andrii@kernel.org> Link: https://lore.kernel.org/bpf/20210917182911.2426606-3-davemarchevsky@fb.com
75 lines
1.8 KiB
C
75 lines
1.8 KiB
C
// SPDX-License-Identifier: GPL-2.0
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#include <test_progs.h>
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static void toggle_object_autoload_progs(const struct bpf_object *obj,
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const char *title_load)
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{
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struct bpf_program *prog;
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bpf_object__for_each_program(prog, obj) {
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const char *title = bpf_program__section_name(prog);
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if (!strcmp(title_load, title))
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bpf_program__set_autoload(prog, true);
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else
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bpf_program__set_autoload(prog, false);
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}
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}
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void test_reference_tracking(void)
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{
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const char *file = "test_sk_lookup_kern.o";
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const char *obj_name = "ref_track";
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DECLARE_LIBBPF_OPTS(bpf_object_open_opts, open_opts,
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.object_name = obj_name,
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.relaxed_maps = true,
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);
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struct bpf_object *obj_iter, *obj = NULL;
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struct bpf_program *prog;
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__u32 duration = 0;
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int err = 0;
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obj_iter = bpf_object__open_file(file, &open_opts);
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if (!ASSERT_OK_PTR(obj_iter, "obj_iter_open_file"))
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return;
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if (CHECK(strcmp(bpf_object__name(obj_iter), obj_name), "obj_name",
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"wrong obj name '%s', expected '%s'\n",
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bpf_object__name(obj_iter), obj_name))
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goto cleanup;
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bpf_object__for_each_program(prog, obj_iter) {
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const char *title;
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/* Ignore .text sections */
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title = bpf_program__section_name(prog);
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if (strstr(title, ".text") != NULL)
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continue;
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if (!test__start_subtest(title))
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continue;
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obj = bpf_object__open_file(file, &open_opts);
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if (!ASSERT_OK_PTR(obj, "obj_open_file"))
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goto cleanup;
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toggle_object_autoload_progs(obj, title);
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/* Expect verifier failure if test name has 'err' */
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if (strstr(title, "err_") != NULL) {
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libbpf_print_fn_t old_print_fn;
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old_print_fn = libbpf_set_print(NULL);
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err = !bpf_object__load(obj);
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libbpf_set_print(old_print_fn);
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} else {
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err = bpf_object__load(obj);
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}
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CHECK(err, title, "\n");
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bpf_object__close(obj);
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obj = NULL;
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}
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cleanup:
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bpf_object__close(obj);
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bpf_object__close(obj_iter);
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}
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