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

   1 // SPDX-License-Identifier: GPL-2.0
   2 /* Copyright (c) 2020 Facebook */
   3
   4 #include <test_progs.h>
   5 #include "test_endian.skel.h"
   6
   7 static int duration;
   8
   9 #define IN16 0x1234
  10 #define IN32 0x12345678U
  11 #define IN64 0x123456789abcdef0ULL
  12
  13 #define OUT16 0x3412
  14 #define OUT32 0x78563412U
  15 #define OUT64 0xf0debc9a78563412ULL
  16
  17 void test_endian(void)
  18 {
  19         struct test_endian* skel;
  20         struct test_endian__bss *bss;
  21         int err;
  22
  23         skel = test_endian__open_and_load();
  24         if (CHECK(!skel, "skel_open", "failed to open skeleton\n"))
  25                 return;
  26         bss = skel->bss;
  27
  28         bss->in16 = IN16;
  29         bss->in32 = IN32;
  30         bss->in64 = IN64;
  31
  32         err = test_endian__attach(skel);
  33         if (CHECK(err, "skel_attach", "skeleton attach failed: %d\n", err))
  34                 goto cleanup;
  35
  36         usleep(1);
  37
  38         CHECK(bss->out16 != OUT16, "out16", "got 0x%llx != exp 0x%llx\n",
  39               (__u64)bss->out16, (__u64)OUT16);
  40         CHECK(bss->out32 != OUT32, "out32", "got 0x%llx != exp 0x%llx\n",
  41               (__u64)bss->out32, (__u64)OUT32);
  42         CHECK(bss->out64 != OUT64, "out16", "got 0x%llx != exp 0x%llx\n",
  43               (__u64)bss->out64, (__u64)OUT64);
  44
  45         CHECK(bss->const16 != OUT16, "const16", "got 0x%llx != exp 0x%llx\n",
  46               (__u64)bss->const16, (__u64)OUT16);
  47         CHECK(bss->const32 != OUT32, "const32", "got 0x%llx != exp 0x%llx\n",
  48               (__u64)bss->const32, (__u64)OUT32);
  49         CHECK(bss->const64 != OUT64, "const64", "got 0x%llx != exp 0x%llx\n",
  50               (__u64)bss->const64, (__u64)OUT64);
  51 cleanup:
  52         test_endian__destroy(skel);
  53 }