diff options
| author |   Kumar Kartikeya Dwivedi <memxor@gmail.com> | 2022-05-12 01:16:54 +0530 |
|---|---|---|
| committer |   Alexei Starovoitov <ast@kernel.org> | 2022-05-11 16:57:27 -0700 |
| commit | 0ef6740e97777bbe04aeacd32239ccb1732098d7 (patch) | |
| tree | bb6dfa8f502812fcf7a081aa26b0ae0b2603b287 /tools/testing/selftests/bpf/prog_tests/map_kptr.c | |
| parent | selftests/bpf: Add negative C tests for kptrs (diff) | |
| download | linux-dev-0ef6740e97777bbe04aeacd32239ccb1732098d7.tar.xz linux-dev-0ef6740e97777bbe04aeacd32239ccb1732098d7.zip | |
selftests/bpf: Add tests for kptr_ref refcounting
Check at runtime how various operations for kptr_ref affect its refcount
and verify against the actual count.
Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
Link: https://lore.kernel.org/r/20220511194654.765705-5-memxor@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'tools/testing/selftests/bpf/prog_tests/map_kptr.c')
| -rw-r--r-- | tools/testing/selftests/bpf/prog_tests/map_kptr.c | 27 |
1 files changed, 24 insertions, 3 deletions
diff --git a/tools/testing/selftests/bpf/prog_tests/map_kptr.c b/tools/testing/selftests/bpf/prog_tests/map_kptr.c index 00819277cb17..8142dd9eff4c 100644 --- a/tools/testing/selftests/bpf/prog_tests/map_kptr.c +++ b/tools/testing/selftests/bpf/prog_tests/map_kptr.c @@ -1,5 +1,6 @@ // SPDX-License-Identifier: GPL-2.0 #include <test_progs.h> +#include <network_helpers.h> #include "map_kptr.skel.h" #include "map_kptr_fail.skel.h" @@ -81,8 +82,13 @@ static void test_map_kptr_fail(void) } } -static void test_map_kptr_success(void) +static void test_map_kptr_success(bool test_run) { + LIBBPF_OPTS(bpf_test_run_opts, opts, + .data_in = &pkt_v4, + .data_size_in = sizeof(pkt_v4), + .repeat = 1, + ); struct map_kptr *skel; int key = 0, ret; char buf[24]; @@ -91,6 +97,16 @@ static void test_map_kptr_success(void) if (!ASSERT_OK_PTR(skel, "map_kptr__open_and_load")) return; + ret = bpf_prog_test_run_opts(bpf_program__fd(skel->progs.test_map_kptr_ref), &opts); + ASSERT_OK(ret, "test_map_kptr_ref refcount"); + ASSERT_OK(opts.retval, "test_map_kptr_ref retval"); + ret = bpf_prog_test_run_opts(bpf_program__fd(skel->progs.test_map_kptr_ref2), &opts); + ASSERT_OK(ret, "test_map_kptr_ref2 refcount"); + ASSERT_OK(opts.retval, "test_map_kptr_ref2 retval"); + + if (test_run) + return; + ret = bpf_map_update_elem(bpf_map__fd(skel->maps.array_map), &key, buf, 0); ASSERT_OK(ret, "array_map update"); ret = bpf_map_update_elem(bpf_map__fd(skel->maps.array_map), &key, buf, 0); @@ -116,7 +132,12 @@ static void test_map_kptr_success(void) void test_map_kptr(void) { - if (test__start_subtest("success")) - test_map_kptr_success(); + if (test__start_subtest("success")) { + test_map_kptr_success(false); + /* Do test_run twice, so that we see refcount going back to 1 + * after we leave it in map from first iteration. + */ + test_map_kptr_success(true); + } test_map_kptr_fail(); } |