diff options
| author | Dave Marchevsky <davemarchevsky@fb.com> | 2023-12-05 00:17:22 +0300 |
|---|---|---|
| committer | Daniel Borkmann <daniel@iogearbox.net> | 2023-12-05 17:06:47 +0300 |
| commit | 1b4c7e20bfd6cfe0efbc51756d930a9406d41ea7 (patch) | |
| tree | 039941b0e3e680eb0957a1cc32f62f43012a19bd /tools/testing/selftests/bpf/prog_tests | |
| parent | ce3c49da11d77aa7d53cd549d308eb5f7fed8576 (diff) | |
| download | linux-1b4c7e20bfd6cfe0efbc51756d930a9406d41ea7.tar.xz | |
selftests/bpf: Test bpf_kptr_xchg stashing of bpf_rb_root
There was some confusion amongst Meta sched_ext folks regarding whether
stashing bpf_rb_root - the tree itself, rather than a single node - was
supported. This patch adds a small test which demonstrates this
functionality: a local kptr with rb_root is created, a node is created
and added to the tree, then the tree is kptr_xchg'd into a mapval.
Signed-off-by: Dave Marchevsky <davemarchevsky@fb.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Yonghong Song <yonghong.song@linux.dev>
Link: https://lore.kernel.org/bpf/20231204211722.571346-1-davemarchevsky@fb.com
Diffstat (limited to 'tools/testing/selftests/bpf/prog_tests')
| -rw-r--r-- | tools/testing/selftests/bpf/prog_tests/local_kptr_stash.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/tools/testing/selftests/bpf/prog_tests/local_kptr_stash.c b/tools/testing/selftests/bpf/prog_tests/local_kptr_stash.c index e6e50a394472..827e713f6cf1 100644 --- a/tools/testing/selftests/bpf/prog_tests/local_kptr_stash.c +++ b/tools/testing/selftests/bpf/prog_tests/local_kptr_stash.c @@ -48,6 +48,27 @@ static void test_local_kptr_stash_plain(void) local_kptr_stash__destroy(skel); } +static void test_local_kptr_stash_local_with_root(void) +{ + LIBBPF_OPTS(bpf_test_run_opts, opts, + .data_in = &pkt_v4, + .data_size_in = sizeof(pkt_v4), + .repeat = 1, + ); + struct local_kptr_stash *skel; + int ret; + + skel = local_kptr_stash__open_and_load(); + if (!ASSERT_OK_PTR(skel, "local_kptr_stash__open_and_load")) + return; + + ret = bpf_prog_test_run_opts(bpf_program__fd(skel->progs.stash_local_with_root), &opts); + ASSERT_OK(ret, "local_kptr_stash_add_local_with_root run"); + ASSERT_OK(opts.retval, "local_kptr_stash_add_local_with_root retval"); + + local_kptr_stash__destroy(skel); +} + static void test_local_kptr_stash_unstash(void) { LIBBPF_OPTS(bpf_test_run_opts, opts, @@ -115,6 +136,8 @@ void test_local_kptr_stash(void) test_local_kptr_stash_simple(); if (test__start_subtest("local_kptr_stash_plain")) test_local_kptr_stash_plain(); + if (test__start_subtest("local_kptr_stash_local_with_root")) + test_local_kptr_stash_local_with_root(); if (test__start_subtest("local_kptr_stash_unstash")) test_local_kptr_stash_unstash(); if (test__start_subtest("refcount_acquire_without_unstash")) |