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selftests/bpf: Improve inner_map test coverage.

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Check that hash and array inner maps are properly initialized.

Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20211201181040.23337-14-alexei.starovoitov@gmail.com
This commit is contained in:
Alexei Starovoitov 2021-12-01 10:10:36 -08:00 committed by Andrii Nakryiko
parent bc5f75da97
commit d82fa9b708
1 changed files with 14 additions and 2 deletions
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16
tools/testing/selftests/bpf/progs/map_ptr_kern.c
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@ -334,9 +334,11 @@ static inline int check_lpm_trie(void)
return 1;
}
#define INNER_MAX_ENTRIES 1234
struct inner_map {
__uint(type, BPF_MAP_TYPE_ARRAY);
__uint(max_entries, 1);
__uint(max_entries, INNER_MAX_ENTRIES);
__type(key, __u32);
__type(value, __u32);
} inner_map SEC(".maps");
@ -348,7 +350,7 @@ struct {
__type(value, __u32);
__array(values, struct {
__uint(type, BPF_MAP_TYPE_ARRAY);
__uint(max_entries, 1);
__uint(max_entries, INNER_MAX_ENTRIES);
__type(key, __u32);
__type(value, __u32);
});
@ -360,8 +362,13 @@ static inline int check_array_of_maps(void)
{
struct bpf_array *array_of_maps = (struct bpf_array *)&m_array_of_maps;
struct bpf_map *map = (struct bpf_map *)&m_array_of_maps;
struct bpf_array *inner_map;
int key = 0;
VERIFY(check_default(&array_of_maps->map, map));
inner_map = bpf_map_lookup_elem(array_of_maps, &key);
VERIFY(inner_map != 0);
VERIFY(inner_map->map.max_entries == INNER_MAX_ENTRIES);
return 1;
}
@ -382,8 +389,13 @@ static inline int check_hash_of_maps(void)
{
struct bpf_htab *hash_of_maps = (struct bpf_htab *)&m_hash_of_maps;
struct bpf_map *map = (struct bpf_map *)&m_hash_of_maps;
struct bpf_htab *inner_map;
int key = 2;
VERIFY(check_default(&hash_of_maps->map, map));
inner_map = bpf_map_lookup_elem(hash_of_maps, &key);
VERIFY(inner_map != 0);
VERIFY(inner_map->map.max_entries == INNER_MAX_ENTRIES);
return 1;
}