[PATCH bpf-next v4 5/6] selftests/bpf: Monitor traffic for sockmap_listen.

[Kui-Feng Lee <thinker.li@xxxxxxxxx>]

Enable traffic monitor for each subtest of sockmap_listen.

Signed-off-by: Kui-Feng Lee <thinker.li@xxxxxxxxx>
---
 tools/testing/selftests/bpf/prog_tests/sockmap_listen.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/tools/testing/selftests/bpf/prog_tests/sockmap_listen.c b/tools/testing/selftests/bpf/prog_tests/sockmap_listen.c
index 9ce0e0e0b7da..2030472fb8e8 100644
--- a/tools/testing/selftests/bpf/prog_tests/sockmap_listen.c
+++ b/tools/testing/selftests/bpf/prog_tests/sockmap_listen.c
@@ -1926,14 +1926,23 @@ static void test_udp_unix_redir(struct test_sockmap_listen *skel, struct bpf_map
 {
 	const char *family_name, *map_name;
 	char s[MAX_TEST_NAME];
+	struct netns_obj *netns;
 
 	family_name = family_str(family);
 	map_name = map_type_str(map);
 	snprintf(s, sizeof(s), "%s %s %s", map_name, family_name, __func__);
 	if (!test__start_subtest(s))
 		return;
+
+	netns = netns_new("test", true);
+	if (!ASSERT_OK_PTR(netns, "netns_new"))
+		return;
+	system("ip link set lo up");
+
 	inet_unix_skb_redir_to_connected(skel, map, family);
 	unix_inet_skb_redir_to_connected(skel, map, family);
+
+	netns_free(netns);
 }
 
 static void run_tests(struct test_sockmap_listen *skel, struct bpf_map *map,
-- 
2.34.1