LXR linux/tools/testing/selftests/bpf/prog_tests/reference

   1// SPDX-License-Identifier: GPL-2.0
   2#include <test_progs.h>
   3
   4void test_reference_tracking(void)
   5{
   6        const char *file = "test_sk_lookup_kern.o";
   7        const char *obj_name = "ref_track";
   8        DECLARE_LIBBPF_OPTS(bpf_object_open_opts, open_opts,
   9                .object_name = obj_name,
  10                .relaxed_maps = true,
  11        );
  12        struct bpf_object *obj;
  13        struct bpf_program *prog;
  14        __u32 duration = 0;
  15        int err = 0;
  16
  17        obj = bpf_object__open_file(file, &open_opts);
  18        if (!ASSERT_OK_PTR(obj, "obj_open_file"))
  19                return;
  20
  21        if (CHECK(strcmp(bpf_object__name(obj), obj_name), "obj_name",
  22                  "wrong obj name '%s', expected '%s'\n",
  23                  bpf_object__name(obj), obj_name))
  24                goto cleanup;
  25
  26        bpf_object__for_each_program(prog, obj) {
  27                const char *title;
  28
  29                /* Ignore .text sections */
  30                title = bpf_program__section_name(prog);
  31                if (strstr(title, ".text") != NULL)
  32                        continue;
  33
  34                if (!test__start_subtest(title))
  35                        continue;
  36
  37                /* Expect verifier failure if test name has 'err' */
  38                if (strstr(title, "err_") != NULL) {
  39                        libbpf_print_fn_t old_print_fn;
  40
  41                        old_print_fn = libbpf_set_print(NULL);
  42                        err = !bpf_program__load(prog, "GPL", 0);
  43                        libbpf_set_print(old_print_fn);
  44                } else {
  45                        err = bpf_program__load(prog, "GPL", 0);
  46                }
  47                CHECK(err, title, "\n");
  48        }
  49
  50cleanup:
  51        bpf_object__close(obj);
  52}
  53