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linux/tools/testing/selftests/bpf/prog_tests/inner_array_lookup.c
Rhys Rustad-Elliott 1022b67b89 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 <me@rhysre.net>
Link: https://lore.kernel.org/r/20230602190110.47068-3-me@rhysre.net
Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org>
2023-06-02 17:04:22 -07:00

31 lines
704 B
C

// SPDX-License-Identifier: GPL-2.0-only
#include <test_progs.h>
#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);
}