@@ -2237,3 +2237,34 @@ void serial_test_tc_opts_detach_after(void)
test_tc_opts_detach_after_target(BPF_TCX_INGRESS);
test_tc_opts_detach_after_target(BPF_TCX_EGRESS);
}
+
+static void test_tc_opts_delete_empty(int target, bool chain_tc_old)
+{
+ LIBBPF_OPTS(bpf_tc_hook, tc_hook, .ifindex = loopback);
+ LIBBPF_OPTS(bpf_prog_detach_opts, optd);
+ int err;
+
+ assert_mprog_count(target, 0);
+ if (chain_tc_old) {
+ tc_hook.attach_point = target == BPF_TCX_INGRESS ?
+ BPF_TC_INGRESS : BPF_TC_EGRESS;
+ err = bpf_tc_hook_create(&tc_hook);
+ ASSERT_OK(err, "bpf_tc_hook_create");
+ __assert_mprog_count(target, 0, true, loopback);
+ }
+ err = bpf_prog_detach_opts(0, loopback, target, &optd);
+ ASSERT_EQ(err, -ENOENT, "prog_detach");
+ if (chain_tc_old) {
+ tc_hook.attach_point = BPF_TC_INGRESS | BPF_TC_EGRESS;
+ bpf_tc_hook_destroy(&tc_hook);
+ }
+ assert_mprog_count(target, 0);
+}
+
+void serial_test_tc_opts_delete_empty(void)
+{
+ test_tc_opts_delete_empty(BPF_TCX_INGRESS, false);
+ test_tc_opts_delete_empty(BPF_TCX_EGRESS, false);
+ test_tc_opts_delete_empty(BPF_TCX_INGRESS, true);
+ test_tc_opts_delete_empty(BPF_TCX_EGRESS, true);
+}
Add a detachment test case with miniq present to assert that with and without the miniq we get the same error. # ./test_progs -t tc_opts #244 tc_opts_after:OK #245 tc_opts_append:OK #246 tc_opts_basic:OK #247 tc_opts_before:OK #248 tc_opts_chain_classic:OK #249 tc_opts_delete_empty:OK #250 tc_opts_demixed:OK #251 tc_opts_detach:OK #252 tc_opts_detach_after:OK #253 tc_opts_detach_before:OK #254 tc_opts_dev_cleanup:OK #255 tc_opts_invalid:OK #256 tc_opts_mixed:OK #257 tc_opts_prepend:OK #258 tc_opts_replace:OK #259 tc_opts_revision:OK Summary: 16/0 PASSED, 0 SKIPPED, 0 FAILED Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> --- .../selftests/bpf/prog_tests/tc_opts.c | 31 +++++++++++++++++++ 1 file changed, 31 insertions(+)