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selftests/bpf: run mptcp in a dedicated netns

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The current mptcp test is run in init netns. If the user or default
system config disabled mptcp, the test will fail. Let's run the mptcp
test in a dedicated netns to avoid none kernel default mptcp setting.

Suggested-by: Martin KaFai Lau <martin.lau@linux.dev>
Signed-off-by: Hangbin Liu <liuhangbin@gmail.com>
Acked-by: Matthieu Baerts <matthieu.baerts@tessares.net>
Link: https://lore.kernel.org/r/20230224061343.506571-3-liuhangbin@gmail.com
Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org>
This commit is contained in:
Hangbin Liu 2023-02-24 14:13:43 +08:00 committed by Martin KaFai Lau
parent b61987d37c
commit 02d6a057c7
1 changed files with 17 additions and 2 deletions
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19
tools/testing/selftests/bpf/prog_tests/mptcp.c
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@ -7,6 +7,8 @@
#include "network_helpers.h"
#include "mptcp_sock.skel.h"
#define NS_TEST "mptcp_ns"
#ifndef TCP_CA_NAME_MAX
#define TCP_CA_NAME_MAX 16
#endif
@ -138,12 +140,20 @@ out:
static void test_base(void)
{
struct nstoken *nstoken = NULL;
int server_fd, cgroup_fd;
cgroup_fd = test__join_cgroup("/mptcp");
if (!ASSERT_GE(cgroup_fd, 0, "test__join_cgroup"))
return;
SYS(fail, "ip netns add %s", NS_TEST);
SYS(fail, "ip -net %s link set dev lo up", NS_TEST);
nstoken = open_netns(NS_TEST);
if (!ASSERT_OK_PTR(nstoken, "open_netns"))
goto fail;
/* without MPTCP */
server_fd = start_server(AF_INET, SOCK_STREAM, NULL, 0, 0);
if (!ASSERT_GE(server_fd, 0, "start_server"))
@ -157,13 +167,18 @@ with_mptcp:
/* with MPTCP */
server_fd = start_mptcp_server(AF_INET, NULL, 0, 0);
if (!ASSERT_GE(server_fd, 0, "start_mptcp_server"))
goto close_cgroup_fd;
goto fail;
ASSERT_OK(run_test(cgroup_fd, server_fd, true), "run_test mptcp");
close(server_fd);
close_cgroup_fd:
fail:
if (nstoken)
close_netns(nstoken);
SYS_NOFAIL("ip netns del " NS_TEST " &> /dev/null");
close(cgroup_fd);
}