selftests/bpf: test_tunnel: Move geneve tunnel test to test_progs

geneve tunnels are tested in the test_tunnel.sh but not in the test_progs
framework.

Add a new test in test_progs to test geneve tunnels. It uses the same
network topology and the same BPF programs than the script.
Remove test_geneve() from the script.

Signed-off-by: Bastien Curutchet (eBPF Foundation) <bastien.curutchet@bootlin.com>
Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org>
Acked-by: Stanislav Fomichev <sdf@fomichev.me>
Link: https://patch.msgid.link/20250303-tunnels-v2-7-8329f38f0678@bootlin.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>

1 files changed, 45 insertions, 0 deletions

diff --git a/tools/testing/selftests/bpf/prog_tests/test_tunnel.c b/tools/testing/selftests/bpf/prog_tests/test_tunnel.c
index 1b1b19045282..2210a1d76836 100644
--- a/tools/testing/selftests/bpf/prog_tests/test_tunnel.c
+++ b/tools/testing/selftests/bpf/prog_tests/test_tunnel.c
@@ -112,6 +112,9 @@
 #define IP6ERSPAN_TUNL_DEV0 "ip6erspan00"
 #define IP6ERSPAN_TUNL_DEV1 "ip6erspan11"
 
+#define GENEVE_TUNL_DEV0 "geneve00"
+#define GENEVE_TUNL_DEV1 "geneve11"
+
 #define PING_ARGS "-i 0.01 -c 3 -w 10 -q"
 
 static int config_device(void)
@@ -443,6 +446,21 @@ fail:
 	return -1;
 }
 
+static int add_geneve_tunnel(const char *dev0, const char *dev1,
+			     const char *type, const char *opt)
+{
+	if (!type || !opt || !dev0 || !dev1)
+		return -1;
+
+	SYS(fail, "ip -n at_ns0 link add dev %s type %s id 2 %s remote %s",
+	    dev0, type, opt, IP4_ADDR1_VETH1);
+
+	SYS(fail, "ip link add dev %s type %s %s external", dev1, type, opt);
+
+	return set_ipv4_addr(dev0, dev1);
+fail:
+	return -1;
+}
 
 static int test_ping(int family, const char *addr)
 {
@@ -955,6 +973,32 @@ done:
 	test_tunnel_kern__destroy(skel);
 }
 
+static void test_geneve_tunnel(void)
+{
+	struct test_tunnel_kern *skel;
+	int set_fd, get_fd;
+	int err;
+
+	skel = test_tunnel_kern__open_and_load();
+	if (!ASSERT_OK_PTR(skel, "test_tunnel_kern__open_and_load"))
+		return;
+
+	err = add_geneve_tunnel(GENEVE_TUNL_DEV0, GENEVE_TUNL_DEV1,
+				"geneve", "dstport 6081");
+	if (!ASSERT_OK(err, "add tunnel"))
+		goto done;
+
+	set_fd = bpf_program__fd(skel->progs.geneve_set_tunnel);
+	get_fd = bpf_program__fd(skel->progs.geneve_get_tunnel);
+	if (generic_attach(GENEVE_TUNL_DEV1, get_fd, set_fd))
+		goto done;
+
+	ping_dev0();
+	ping_dev1();
+done:
+	delete_tunnel(GENEVE_TUNL_DEV0, GENEVE_TUNL_DEV1);
+	test_tunnel_kern__destroy(skel);
+}
 #define RUN_TEST(name, ...)						\
 	({								\
 		if (test__start_subtest(#name)) {			\
@@ -982,6 +1026,7 @@ static void *test_tunnel_run_tests(void *arg)
 	RUN_TEST(erspan_tunnel, V2);
 	RUN_TEST(ip6erspan_tunnel, V1);
 	RUN_TEST(ip6erspan_tunnel, V2);
+	RUN_TEST(geneve_tunnel);
 
 	return NULL;
 }