From 1022b67b89ce5b92906fec6447f02acf6ba018e4 Mon Sep 17 00:00:00 2001 From: Rhys Rustad-Elliott Date: Fri, 2 Jun 2023 19:02:24 +0000 Subject: selftests/bpf: Add access_inner_map selftest Add a selftest that accesses a BPF_MAP_TYPE_ARRAY (at a nonzero index) nested within a BPF_MAP_TYPE_HASH_OF_MAPS to flex a previously buggy case. Signed-off-by: Rhys Rustad-Elliott Link: https://lore.kernel.org/r/20230602190110.47068-3-me@rhysre.net Signed-off-by: Martin KaFai Lau --- .../selftests/bpf/prog_tests/inner_array_lookup.c | 31 ++++++++++++++++++++++ 1 file changed, 31 insertions(+) create mode 100644 tools/testing/selftests/bpf/prog_tests/inner_array_lookup.c (limited to 'tools/testing/selftests/bpf/prog_tests/inner_array_lookup.c') diff --git a/tools/testing/selftests/bpf/prog_tests/inner_array_lookup.c b/tools/testing/selftests/bpf/prog_tests/inner_array_lookup.c new file mode 100644 index 000000000000..9ab4cd195108 --- /dev/null +++ b/tools/testing/selftests/bpf/prog_tests/inner_array_lookup.c @@ -0,0 +1,31 @@ +// SPDX-License-Identifier: GPL-2.0-only + +#include + +#include "inner_array_lookup.skel.h" + +void test_inner_array_lookup(void) +{ + int map1_fd, err; + int key = 3; + int val = 1; + struct inner_array_lookup *skel; + + skel = inner_array_lookup__open_and_load(); + if (!ASSERT_OK_PTR(skel, "open_load_skeleton")) + return; + + err = inner_array_lookup__attach(skel); + if (!ASSERT_OK(err, "skeleton_attach")) + goto cleanup; + + map1_fd = bpf_map__fd(skel->maps.inner_map1); + bpf_map_update_elem(map1_fd, &key, &val, 0); + + /* Probe should have set the element at index 3 to 2 */ + bpf_map_lookup_elem(map1_fd, &key, &val); + ASSERT_EQ(val, 2, "value_is_2"); + +cleanup: + inner_array_lookup__destroy(skel); +} -- cgit