aboutsummaryrefslogtreecommitdiffstats
path: root/tools/testing/selftests/bpf/prog_tests/snprintf_btf.c
diff options
context:
space:
mode:
Diffstat (limited to 'tools/testing/selftests/bpf/prog_tests/snprintf_btf.c')
-rw-r--r--tools/testing/selftests/bpf/prog_tests/snprintf_btf.c60
1 files changed, 60 insertions, 0 deletions
diff --git a/tools/testing/selftests/bpf/prog_tests/snprintf_btf.c b/tools/testing/selftests/bpf/prog_tests/snprintf_btf.c
new file mode 100644
index 000000000000..dd41b826be30
--- /dev/null
+++ b/tools/testing/selftests/bpf/prog_tests/snprintf_btf.c
@@ -0,0 +1,60 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <test_progs.h>
+#include <linux/btf.h>
+#include "netif_receive_skb.skel.h"
+
+/* Demonstrate that bpf_snprintf_btf succeeds and that various data types
+ * are formatted correctly.
+ */
+void serial_test_snprintf_btf(void)
+{
+ struct netif_receive_skb *skel;
+ struct netif_receive_skb__bss *bss;
+ int err, duration = 0;
+
+ skel = netif_receive_skb__open();
+ if (CHECK(!skel, "skel_open", "failed to open skeleton\n"))
+ return;
+
+ err = netif_receive_skb__load(skel);
+ if (CHECK(err, "skel_load", "failed to load skeleton: %d\n", err))
+ goto cleanup;
+
+ bss = skel->bss;
+
+ err = netif_receive_skb__attach(skel);
+ if (CHECK(err, "skel_attach", "skeleton attach failed: %d\n", err))
+ goto cleanup;
+
+ /* generate receive event */
+ err = system("ping -c 1 127.0.0.1 > /dev/null");
+ if (CHECK(err, "system", "ping failed: %d\n", err))
+ goto cleanup;
+
+ if (bss->skip) {
+ printf("%s:SKIP:no __builtin_btf_type_id\n", __func__);
+ test__skip();
+ goto cleanup;
+ }
+
+ /*
+ * Make sure netif_receive_skb program was triggered
+ * and it set expected return values from bpf_trace_printk()s
+ * and all tests ran.
+ */
+ if (!ASSERT_GT(bss->ret, 0, "bpf_snprintf_ret"))
+ goto cleanup;
+
+ if (CHECK(bss->ran_subtests == 0, "check if subtests ran",
+ "no subtests ran, did BPF program run?"))
+ goto cleanup;
+
+ if (CHECK(bss->num_subtests != bss->ran_subtests,
+ "check all subtests ran",
+ "only ran %d of %d tests\n", bss->num_subtests,
+ bss->ran_subtests))
+ goto cleanup;
+
+cleanup:
+ netif_receive_skb__destroy(skel);
+}