tools/testing/selftests/bpf/prog_tests/hash_large_key.c

   1 // SPDX-License-Identifier: GPL-2.0
   2
   3 #include <test_progs.h>
   4 #include "test_hash_large_key.skel.h"
   5
   6 void test_hash_large_key(void)
   7 {
   8         int err, value = 21, duration = 0, hash_map_fd;
   9         struct test_hash_large_key *skel;
  10
  11         struct bigelement {
  12                 int a;
  13                 char b[4096];
  14                 long long c;
  15         } key;
  16         bzero(&key, sizeof(key));
  17
  18         skel = test_hash_large_key__open_and_load();
  19         if (CHECK(!skel, "skel_open_and_load", "skeleton open/load failed\n"))
  20                 return;
  21
  22         hash_map_fd = bpf_map__fd(skel->maps.hash_map);
  23         if (CHECK(hash_map_fd < 0, "bpf_map__fd", "failed\n"))
  24                 goto cleanup;
  25
  26         err = test_hash_large_key__attach(skel);
  27         if (CHECK(err, "attach_raw_tp", "err %d\n", err))
  28                 goto cleanup;
  29
  30         err = bpf_map_update_elem(hash_map_fd, &key, &value, BPF_ANY);
  31         if (CHECK(err, "bpf_map_update_elem", "errno=%d\n", errno))
  32                 goto cleanup;
  33
  34         key.c = 1;
  35         err = bpf_map_lookup_elem(hash_map_fd, &key, &value);
  36         if (CHECK(err, "bpf_map_lookup_elem", "errno=%d\n", errno))
  37                 goto cleanup;
  38
  39         CHECK_FAIL(value != 42);
  40
  41 cleanup:
  42         test_hash_large_key__destroy(skel);
  43 }