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

   1 // SPDX-License-Identifier: GPL-2.0
   2
   3 #include <test_progs.h>
   4 #include "netns_cookie_prog.skel.h"
   5 #include "network_helpers.h"
   6
   7 #ifndef SO_NETNS_COOKIE
   8 #define SO_NETNS_COOKIE 71
   9 #endif
  10
  11 static int duration;
  12
  13 void test_netns_cookie(void)
  14 {
  15         int server_fd = 0, client_fd = 0, cgroup_fd = 0, err = 0, val = 0;
  16         struct netns_cookie_prog *skel;
  17         uint64_t cookie_expected_value;
  18         socklen_t vallen = sizeof(cookie_expected_value);
  19
  20         skel = netns_cookie_prog__open_and_load();
  21         if (!ASSERT_OK_PTR(skel, "skel_open"))
  22                 return;
  23
  24         cgroup_fd = test__join_cgroup("/netns_cookie");
  25         if (CHECK(cgroup_fd < 0, "join_cgroup", "cgroup creation failed\n"))
  26                 goto out;
  27
  28         skel->links.get_netns_cookie_sockops = bpf_program__attach_cgroup(
  29                 skel->progs.get_netns_cookie_sockops, cgroup_fd);
  30         if (!ASSERT_OK_PTR(skel->links.get_netns_cookie_sockops, "prog_attach"))
  31                 goto close_cgroup_fd;
  32
  33         server_fd = start_server(AF_INET6, SOCK_STREAM, "::1", 0, 0);
  34         if (CHECK(server_fd < 0, "start_server", "errno %d\n", errno))
  35                 goto close_cgroup_fd;
  36
  37         client_fd = connect_to_fd(server_fd, 0);
  38         if (CHECK(client_fd < 0, "connect_to_fd", "errno %d\n", errno))
  39                 goto close_server_fd;
  40
  41         err = bpf_map_lookup_elem(bpf_map__fd(skel->maps.netns_cookies),
  42                                 &client_fd, &val);
  43         if (!ASSERT_OK(err, "map_lookup(socket_cookies)"))
  44                 goto close_client_fd;
  45
  46         err = getsockopt(client_fd, SOL_SOCKET, SO_NETNS_COOKIE,
  47                                 &cookie_expected_value, &vallen);
  48         if (!ASSERT_OK(err, "getsockopt)"))
  49                 goto close_client_fd;
  50
  51         ASSERT_EQ(val, cookie_expected_value, "cookie_value");
  52
  53 close_client_fd:
  54         close(client_fd);
  55 close_server_fd:
  56         close(server_fd);
  57 close_cgroup_fd:
  58         close(cgroup_fd);
  59 out:
  60         netns_cookie_prog__destroy(skel);
  61 }