1 files changed, 29 insertions, 0 deletions
diff --git a/tools/testing/selftests/bpf/progs/test_xdp_devmap_tailcall.c b/tools/testing/selftests/bpf/progs/test_xdp_devmap_tailcall.c
new file mode 100644
index 000000000000..814e2a980e97
--- /dev/null
+++ b/tools/testing/selftests/bpf/progs/test_xdp_devmap_tailcall.c
@@ -0,0 +1,29 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include "vmlinux.h"
+#include <bpf/bpf_helpers.h>
+#include <bpf/bpf_tracing.h>
+
+SEC("xdp")
+int xdp_devmap(struct xdp_md *ctx)
+{
+	return ctx->egress_ifindex;
+}
+
+struct {
+	__uint(type, BPF_MAP_TYPE_PROG_ARRAY);
+	__uint(max_entries, 1);
+	__uint(key_size, sizeof(__u32));
+	__array(values, int (void *));
+} xdp_map SEC(".maps") = {
+	.values = {
+		[0] = (void *)&xdp_devmap,
+	},
+};
+
+SEC("xdp")
+int xdp_entry(struct xdp_md *ctx)
+{
+	bpf_tail_call(ctx, &xdp_map, 0);
+	return 0;
+}