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

   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.skel.h"
   8
   9void test_map_ptr(void)
  10{
  11        struct map_ptr_kern *skel;
  12        __u32 duration = 0, retval;
  13        char buf[128];
  14        int err;
  15        int page_size = getpagesize();
  16
  17        skel = map_ptr_kern__open();
  18        if (!ASSERT_OK_PTR(skel, "skel_open"))
  19                return;
  20
  21        err = bpf_map__set_max_entries(skel->maps.m_ringbuf, page_size);
  22        if (!ASSERT_OK(err, "bpf_map__set_max_entries"))
  23                goto cleanup;
  24
  25        err = map_ptr_kern__load(skel);
  26        if (!ASSERT_OK(err, "skel_load"))
  27                goto cleanup;
  28
  29        skel->bss->page_size = page_size;
  30
  31        err = bpf_prog_test_run(bpf_program__fd(skel->progs.cg_skb), 1, &pkt_v4,
  32                                sizeof(pkt_v4), buf, NULL, &retval, NULL);
  33
  34        if (CHECK(err, "test_run", "err=%d errno=%d\n", err, errno))
  35                goto cleanup;
  36
  37        if (CHECK(!retval, "retval", "retval=%d map_type=%u line=%u\n", retval,
  38                  skel->bss->g_map_type, skel->bss->g_line))
  39                goto cleanup;
  40
  41cleanup:
  42        map_ptr_kern__destroy(skel);
  43}
  44