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Diffstat (limited to 'tools/testing/selftests/bpf/prog_tests/xdp_link.c')
-rw-r--r--tools/testing/selftests/bpf/prog_tests/xdp_link.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/tools/testing/selftests/bpf/prog_tests/xdp_link.c b/tools/testing/selftests/bpf/prog_tests/xdp_link.c
index eec0bf83546b..b2b357f8c74c 100644
--- a/tools/testing/selftests/bpf/prog_tests/xdp_link.c
+++ b/tools/testing/selftests/bpf/prog_tests/xdp_link.c
@@ -127,6 +127,11 @@ void serial_test_xdp_link(void)
ASSERT_EQ(link_info.prog_id, id1, "link_prog_id");
ASSERT_EQ(link_info.xdp.ifindex, IFINDEX_LO, "link_ifindex");
+ /* updating program under active BPF link with different type fails */
+ err = bpf_link__update_program(link, skel1->progs.tc_handler);
+ if (!ASSERT_ERR(err, "link_upd_invalid"))
+ goto cleanup;
+
err = bpf_link__detach(link);
if (!ASSERT_OK(err, "link_detach"))
goto cleanup;