netdev - [RFC PATCH bpf-next 2/2] selftests/bpf: add verif

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Message-ID: <20210920151112.3770991-3-davemarchevsky@fb.com>
Date:   Mon, 20 Sep 2021 08:11:12 -0700
From:   Dave Marchevsky <davemarchevsky@...com>
To:     <bpf@...r.kernel.org>
CC:     <netdev@...r.kernel.org>, Alexei Starovoitov <ast@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>,
        Andrii Nakryiko <andrii@...nel.org>,
        Yonghong Song <yhs@...com>,
        Dave Marchevsky <davemarchevsky@...com>
Subject: [RFC PATCH bpf-next 2/2] selftests/bpf: add verif_stats test

verif_stats fields were added to response of bpf_obj_get_info_by_fd
call on a prog. Confirm that they're being populated by loading a simple
program and asking for its info.

Signed-off-by: Dave Marchevsky <davemarchevsky@...com>
---
 .../selftests/bpf/prog_tests/verif_stats.c    | 34 +++++++++++++++++++
 1 file changed, 34 insertions(+)
 create mode 100644 tools/testing/selftests/bpf/prog_tests/verif_stats.c

diff --git a/tools/testing/selftests/bpf/prog_tests/verif_stats.c b/tools/testing/selftests/bpf/prog_tests/verif_stats.c
new file mode 100644
index 000000000000..7bd9ccb0efb8
--- /dev/null
+++ b/tools/testing/selftests/bpf/prog_tests/verif_stats.c
@@ -0,0 +1,34 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Copyright (c) 2021 Facebook */
+
+#include <test_progs.h>
+
+#include "trace_vprintk.lskel.h"
+
+void test_verif_stats(void)
+{
+	__u32 len = sizeof(struct bpf_prog_info);
+	struct bpf_prog_info info = {};
+	struct trace_vprintk *skel;
+	int err;
+
+	skel = trace_vprintk__open_and_load();
+	if (!ASSERT_OK_PTR(skel, "trace_vprintk__open_and_load"))
+		goto cleanup;
+
+	if (!ASSERT_GT(skel->progs.sys_enter.prog_fd, 0, "sys_enter_fd > 0"))
+		goto cleanup;
+
+	err = bpf_obj_get_info_by_fd(skel->progs.sys_enter.prog_fd, &info, &len);
+	if (!ASSERT_OK(err, "bpf_obj_get_info_by_fd"))
+		goto cleanup;
+
+	if (!ASSERT_GT(info.verif_stats.insn_processed, 0, "verif_stats.insn_processed"))
+		goto cleanup;
+
+	if (!ASSERT_GT(info.verif_stats.total_states, 0, "verif_stats.total_states"))
+		goto cleanup;
+
+cleanup:
+	trace_vprintk__destroy(skel);
+}
-- 
2.30.2