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| author | Hou Tao <houtao1@huawei.com> | 2024-11-06 14:35:42 +0800 |
|---|---|---|
| committer | Andrii Nakryiko <andrii@kernel.org> | 2024-11-11 08:18:39 -0800 |
| commit | cb55657c7fc800b722f2ef0afaf4d9c3c8902e6d (patch) | |
| tree | cf7f2072ebf35aa8175ba275776068439022afee /tools/testing/selftests/bpf/progs | |
| parent | selftests/bpf: Move ENOTSUPP from bpf_util.h (diff) | |
| download | linux-cb55657c7fc800b722f2ef0afaf4d9c3c8902e6d.tar.gz linux-cb55657c7fc800b722f2ef0afaf4d9c3c8902e6d.zip | |
selftests/bpf: Test the update operations for htab of maps
Add test cases to verify the following four update operations on htab of
maps don't trigger lockdep warning:
(1) add then delete
(2) add, overwrite, then delete
(3) add, then lookup_and_delete
(4) add two elements, then lookup_and_delete_batch
Test cases are added for pre-allocated and non-preallocated htab of maps
respectively.
Signed-off-by: Hou Tao <houtao1@huawei.com>
Link: https://lore.kernel.org/r/20241106063542.357743-4-houtao@huaweicloud.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Diffstat (limited to 'tools/testing/selftests/bpf/progs')
| -rw-r--r-- | tools/testing/selftests/bpf/progs/update_map_in_htab.c | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/tools/testing/selftests/bpf/progs/update_map_in_htab.c b/tools/testing/selftests/bpf/progs/update_map_in_htab.c new file mode 100644 index 000000000000..c2066247cd9c --- /dev/null +++ b/tools/testing/selftests/bpf/progs/update_map_in_htab.c @@ -0,0 +1,30 @@ +// SPDX-License-Identifier: GPL-2.0 +/* Copyright (C) 2024. Huawei Technologies Co., Ltd */ +#include <linux/bpf.h> +#include <bpf/bpf_helpers.h> + +struct inner_map_type { + __uint(type, BPF_MAP_TYPE_ARRAY); + __uint(key_size, 4); + __uint(value_size, 4); + __uint(max_entries, 1); +} inner_map SEC(".maps"); + +struct { + __uint(type, BPF_MAP_TYPE_HASH_OF_MAPS); + __type(key, int); + __type(value, int); + __uint(max_entries, 2); + __array(values, struct inner_map_type); +} outer_htab_map SEC(".maps"); + +struct { + __uint(type, BPF_MAP_TYPE_HASH_OF_MAPS); + __uint(map_flags, BPF_F_NO_PREALLOC); + __type(key, int); + __type(value, int); + __uint(max_entries, 2); + __array(values, struct inner_map_type); +} outer_alloc_htab_map SEC(".maps"); + +char _license[] SEC("license") = "GPL"; |