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

   1 // SPDX-License-Identifier: GPL-2.0
   2 // Copyright (c) 2020 Facebook
   3
   4 #include <test_progs.h>
   5 #include <network_helpers.h>
   6
   7 #include "map_ptr_kern.lskel.h"
   8
   9 void test_map_ptr(void)
  10 {
  11         struct map_ptr_kern_lskel *skel;
  12         char buf[128];
  13         int err;
  14         int page_size = getpagesize();
  15         LIBBPF_OPTS(bpf_test_run_opts, topts,
  16                 .data_in = &pkt_v4,
  17                 .data_size_in = sizeof(pkt_v4),
  18                 .data_out = buf,
  19                 .data_size_out = sizeof(buf),
  20                 .repeat = 1,
  21         );
  22
  23         skel = map_ptr_kern_lskel__open();
  24         if (!ASSERT_OK_PTR(skel, "skel_open"))
  25                 return;
  26
  27         skel->maps.m_ringbuf.max_entries = page_size;
  28
  29         err = map_ptr_kern_lskel__load(skel);
  30         if (!ASSERT_OK(err, "skel_load"))
  31                 goto cleanup;
  32
  33         skel->bss->page_size = page_size;
  34
  35         err = bpf_prog_test_run_opts(skel->progs.cg_skb.prog_fd, &topts);
  36
  37         if (!ASSERT_OK(err, "test_run"))
  38                 goto cleanup;
  39
  40         if (!ASSERT_NEQ(topts.retval, 0, "test_run retval"))
  41                 goto cleanup;
  42
  43 cleanup:
  44         map_ptr_kern_lskel__destroy(skel);
  45 }