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libbpf: Deprecate forgotten btf__get_map_kv_tids() 

btf__get_map_kv_tids() is in the same group of APIs as
btf_ext__reloc_func_info()/btf_ext__reloc_line_info() which were only
used by BCC. It was missed to be marked as deprecated in [0]. Fixing
that to complete [1].

  [0] https://patchwork.kernel.org/project/netdevbpf/patch/20220201014610.3522985-1-davemarchevsky@fb.com/
  [1] Closes: https://github.com/libbpf/libbpf/issues/277

Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Yonghong Song <yhs@fb.com>
Link: https://lore.kernel.org/bpf/20220203225017.1795946-1-andrii@kernel.org
This commit is contained in:
Andrii Nakryiko 2022-02-03 14:50:17 -08:00 committed by Daniel Borkmann
parent cf1a4cbce6
commit 227a0713b3
2 changed files with 4 additions and 0 deletions
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1
tools/lib/bpf/btf.h
View File

@ -150,6 +150,7 @@ LIBBPF_API void btf__set_fd(struct btf *btf, int fd);
LIBBPF_API const void *btf__raw_data(const struct btf *btf, __u32 *size);
LIBBPF_API const char *btf__name_by_offset(const struct btf *btf, __u32 offset);
LIBBPF_API const char *btf__str_by_offset(const struct btf *btf, __u32 offset);
LIBBPF_DEPRECATED_SINCE(0, 7, "this API is not necessary when BTF-defined maps are used")
LIBBPF_API int btf__get_map_kv_tids(const struct btf *btf, const char *map_name,
__u32 expected_key_size,
__u32 expected_value_size,

3
tools/lib/bpf/libbpf.c
View File

@ -4202,9 +4202,12 @@ static int bpf_map_find_btf_info(struct bpf_object *obj, struct bpf_map *map)
if (!bpf_map__is_internal(map)) {
pr_warn("Use of BPF_ANNOTATE_KV_PAIR is deprecated, use BTF-defined maps in .maps section instead\n");
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wdeprecated-declarations"
ret = btf__get_map_kv_tids(obj->btf, map->name, def->key_size,
def->value_size, &key_type_id,
&value_type_id);
#pragma GCC diagnostic pop
} else {
/*
* LLVM annotates global data differently in BTF, that is,