1 files changed, 54 insertions, 0 deletions
diff --git a/tools/testing/selftests/bpf/prog_tests/xdp.c b/tools/testing/selftests/bpf/prog_tests/xdp.c
new file mode 100644
index 000000000..947863a1d
--- /dev/null
+++ b/tools/testing/selftests/bpf/prog_tests/xdp.c
@@ -0,0 +1,54 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <test_progs.h>
+#include <network_helpers.h>
+
+void test_xdp(void)
+{
+	struct vip key4 = {.protocol = 6, .family = AF_INET};
+	struct vip key6 = {.protocol = 6, .family = AF_INET6};
+	struct iptnl_info value4 = {.family = AF_INET};
+	struct iptnl_info value6 = {.family = AF_INET6};
+	const char *file = "./test_xdp.bpf.o";
+	struct bpf_object *obj;
+	char buf[128];
+	struct ipv6hdr iph6;
+	struct iphdr iph;
+	int err, prog_fd, map_fd;
+	LIBBPF_OPTS(bpf_test_run_opts, topts,
+		.data_in = &pkt_v4,
+		.data_size_in = sizeof(pkt_v4),
+		.data_out = buf,
+		.data_size_out = sizeof(buf),
+		.repeat = 1,
+	);
+
+	err = bpf_prog_test_load(file, BPF_PROG_TYPE_XDP, &obj, &prog_fd);
+	if (CHECK_FAIL(err))
+		return;
+
+	map_fd = bpf_find_map(__func__, obj, "vip2tnl");
+	if (map_fd < 0)
+		goto out;
+	bpf_map_update_elem(map_fd, &key4, &value4, 0);
+	bpf_map_update_elem(map_fd, &key6, &value6, 0);
+
+	err = bpf_prog_test_run_opts(prog_fd, &topts);
+	memcpy(&iph, buf + sizeof(struct ethhdr), sizeof(iph));
+	ASSERT_OK(err, "test_run");
+	ASSERT_EQ(topts.retval, XDP_TX, "ipv4 test_run retval");
+	ASSERT_EQ(topts.data_size_out, 74, "ipv4 test_run data_size_out");
+	ASSERT_EQ(iph.protocol, IPPROTO_IPIP, "ipv4 test_run iph.protocol");
+
+	topts.data_in = &pkt_v6;
+	topts.data_size_in = sizeof(pkt_v6);
+	topts.data_size_out = sizeof(buf);
+
+	err = bpf_prog_test_run_opts(prog_fd, &topts);
+	memcpy(&iph6, buf + sizeof(struct ethhdr), sizeof(iph6));
+	ASSERT_OK(err, "test_run");
+	ASSERT_EQ(topts.retval, XDP_TX, "ipv6 test_run retval");
+	ASSERT_EQ(topts.data_size_out, 114, "ipv6 test_run data_size_out");
+	ASSERT_EQ(iph6.nexthdr, IPPROTO_IPV6, "ipv6 test_run iph6.nexthdr");
+out:
+	bpf_object__close(obj);
+}