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selftests/bpf: Turn on libbpf 1.0 mode and fix all IS_ERR checks

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Turn ony libbpf 1.0 mode. Fix all the explicit IS_ERR checks that now will be
broken because libbpf returns NULL on error (and sets errno). Fix
ASSERT_OK_PTR and ASSERT_ERR_PTR to work for both old mode and new modes and
use them throughout selftests. This is trivial to do by using
libbpf_get_error() API that all libbpf users are supposed to use, instead of
IS_ERR checks.

A bunch of checks also did explicit -1 comparison for various fd-returning
APIs. Such checks are replaced with >= 0 or < 0 cases.

There were also few misuses of bpf_object__find_map_by_name() in test_maps.
Those are fixed in this patch as well.

Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: John Fastabend <john.fastabend@gmail.com>
Acked-by: Toke Høiland-Jørgensen <toke@redhat.com>
Link: https://lore.kernel.org/bpf/20210525035935.1461796-3-andrii@kernel.org
This commit is contained in:
Andrii Nakryiko 2021-05-24 20:59:32 -07:00 • committed by Alexei Starovoitov
parent 5981881d21
commit bad2e478af
56 changed files with 347 additions and 425 deletions
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9
tools/testing/selftests/bpf/prog_tests/hashmap.c
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@ -48,8 +48,7 @@ static void test_hashmap_generic(void)
struct hashmap *map;
map = hashmap__new(hash_fn, equal_fn, NULL);
if (CHECK(IS_ERR(map), "hashmap__new",
"failed to create map: %ld\n", PTR_ERR(map)))
if (!ASSERT_OK_PTR(map, "hashmap__new"))
return;
for (i = 0; i < ELEM_CNT; i++) {
@ -267,8 +266,7 @@ static void test_hashmap_multimap(void)
/* force collisions */
map = hashmap__new(collision_hash_fn, equal_fn, NULL);
if (CHECK(IS_ERR(map), "hashmap__new",
"failed to create map: %ld\n", PTR_ERR(map)))
if (!ASSERT_OK_PTR(map, "hashmap__new"))
return;
/* set up multimap:
@ -339,8 +337,7 @@ static void test_hashmap_empty()
/* force collisions */
map = hashmap__new(hash_fn, equal_fn, NULL);
if (CHECK(IS_ERR(map), "hashmap__new",
"failed to create map: %ld\n", PTR_ERR(map)))
if (!ASSERT_OK_PTR(map, "hashmap__new"))
goto cleanup;
if (CHECK(hashmap__size(map) != 0, "hashmap__size",