selftests/bpf: add prog detach to flow_dissector test

In case we are not running in a namespace (which we don't do by default),
let's try to detach the bpf program that we use for eth_get_headlen tests.

Fixes: 0905beec9f52 ("selftests/bpf: run flow dissector tests in skb-less mode")
Signed-off-by: Stanislav Fomichev <[email protected]>
Signed-off-by: Daniel Borkmann <[email protected]>

diff --git a/tools/testing/selftests/bpf/prog_tests/flow_dissector.c b/tools/testing/selftests/bpf/prog_tests/flow_dissector.c
index d40cee07a22416c5acd5454177a75bc3bf189f58..fbd1d88a6095325a5273f21b86ec88eae91d8994 100644 (file)
--- a/tools/testing/selftests/bpf/prog_tests/flow_dissector.c
+++ b/tools/testing/selftests/bpf/prog_tests/flow_dissector.c
@@ -264,5 +264,6 @@ void test_flow_dissector(void)
                CHECK_FLOW_KEYS(tests[i].name, flow_keys, tests[i].keys);
        }
 
+       bpf_prog_detach(prog_fd, BPF_FLOW_DISSECTOR);
        bpf_object__close(obj);
 }