Adds tests checks for loops termination which are nested.
32/1 bpf_termination/bpf_termination:OK
32 bpf_termination:OK
Summary: 1/1 PASSED, 0 SKIPPED, 0 FAILED
Signed-off-by: Raj Sahu <rjsu26@xxxxxxxxx>
Signed-off-by: Siddharth Chintamaneni <sidchintamaneni@xxxxxxxxx>
---
.../bpf/prog_tests/bpf_termination.c | 39 +++++++++++++++
.../selftests/bpf/progs/bpf_termination.c | 47 +++++++++++++++++++
2 files changed, 86 insertions(+)
create mode 100644 tools/testing/selftests/bpf/prog_tests/bpf_termination.c
create mode 100644 tools/testing/selftests/bpf/progs/bpf_termination.c
diff --git a/tools/testing/selftests/bpf/prog_tests/bpf_termination.c b/tools/testing/selftests/bpf/prog_tests/bpf_termination.c
new file mode 100644
index 000000000000..d060073db8f9
--- /dev/null
+++ b/tools/testing/selftests/bpf/prog_tests/bpf_termination.c
@@ -0,0 +1,39 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include <test_progs.h>
+#include <sys/socket.h>
+
+#include "bpf_termination.skel.h"
+
+void test_loop_termination(void)
+{
+ struct bpf_termination *skel;
+ int err;
+
+ skel = bpf_termination__open();
+ if (!ASSERT_OK_PTR(skel, "bpf_termination__open"))
+ return;
+
+ err = bpf_termination__load(skel);
+ if (!ASSERT_OK(err, "bpf_termination__load"))
+ goto out;
+
+ skel->bss->pid = getpid();
+ err = bpf_termination__attach(skel);
+ if (!ASSERT_OK(err, "bpf_termination__attach"))
+ goto out;
+
+ /* Triggers long running BPF program */
+ socket(AF_UNSPEC, SOCK_DGRAM, 0);
+
+ /* If the program is not terminated, it doesn't reach this point */
+ ASSERT_TRUE(true, "Program is terminated");
+out:
+ bpf_termination__destroy(skel);
+}
+
+void test_bpf_termination(void)
+{
+ if (test__start_subtest("bpf_termination"))
+ test_loop_termination();
+}
diff --git a/tools/testing/selftests/bpf/progs/bpf_termination.c b/tools/testing/selftests/bpf/progs/bpf_termination.c
new file mode 100644
index 000000000000..36e97d84750b
--- /dev/null
+++ b/tools/testing/selftests/bpf/progs/bpf_termination.c
@@ -0,0 +1,47 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <stddef.h>
+#include <linux/bpf.h>
+#include <bpf/bpf_helpers.h>
+
+int pid;
+
+#define LOOPS_CNT 1 << 10
+
+static int callback_fn4(void *ctx) {
+ return 0;
+}
+
+static int callback_fn3(void *ctx) {
+
+ bpf_loop(LOOPS_CNT, callback_fn4, NULL, 0);
+ return 0;
+
+}
+
+
+static int callback_fn2(void *ctx) {
+
+ bpf_loop(LOOPS_CNT, callback_fn3, NULL, 0);
+ return 0;
+
+}
+
+static int callback_fn(void *ctx) {
+
+ bpf_loop(LOOPS_CNT, callback_fn2, NULL, 0);
+ return 0;
+
+}
+
+SEC("tp/syscalls/sys_enter_socket")
+int bpf_loop_lr(void *ctx) {
+
+ if ((bpf_get_current_pid_tgid() >> 32) != pid)
+ return 0;
+
+ bpf_loop(LOOPS_CNT, callback_fn, NULL, 0);
+
+ return 0;
+}
+
+char _license[] SEC("license") = "GPL";
--
2.43.0
