[PATCH bpf-next 1/4] selftests/bpf: Handle SIGINT when creating netns

["Matthieu Baerts (NGI0)" <matttbe@xxxxxxxxxx>]

From: Geliang Tang <tanggeliang@xxxxxxxxxx>

It's necessary to delete netns during the MPTCP bpf tests interrupt,
otherwise the next tests run will fail due to unable to create netns.

This patch adds a new SIGINT handle sig_int, and deletes NS_TEST in it.

Signed-off-by: Geliang Tang <tanggeliang@xxxxxxxxxx>
Reviewed-by: Mat Martineau <martineau@xxxxxxxxxx>
Signed-off-by: Matthieu Baerts (NGI0) <matttbe@xxxxxxxxxx>
---
 tools/testing/selftests/bpf/prog_tests/mptcp.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/tools/testing/selftests/bpf/prog_tests/mptcp.c b/tools/testing/selftests/bpf/prog_tests/mptcp.c
index 274d2e033e39..baf976a7a1dd 100644
--- a/tools/testing/selftests/bpf/prog_tests/mptcp.c
+++ b/tools/testing/selftests/bpf/prog_tests/mptcp.c
@@ -64,11 +64,18 @@ struct mptcp_storage {
 	char ca_name[TCP_CA_NAME_MAX];
 };
 
+static void sig_int(int sig)
+{
+	signal(sig, SIG_IGN);
+	SYS_NOFAIL("ip netns del %s", NS_TEST);
+}
+
 static struct nstoken *create_netns(void)
 {
 	SYS(fail, "ip netns add %s", NS_TEST);
 	SYS(fail, "ip -net %s link set dev lo up", NS_TEST);
 
+	signal(SIGINT, sig_int);
 	return open_netns(NS_TEST);
 fail:
 	return NULL;

-- 
2.43.0