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libbpf: Unify low-level map creation APIs w/ new bpf_map_create()

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Mark the entire zoo of low-level map creation APIs for deprecation in
libbpf 0.7 ([0]) and introduce a new bpf_map_create() API that is
OPTS-based (and thus future-proof) and matches the BPF_MAP_CREATE
command name.

While at it, ensure that gen_loader sends map_extra field. Also remove
now unneeded btf_key_type_id/btf_value_type_id logic that libbpf is
doing anyways.

  [0] Closes: https://github.com/libbpf/libbpf/issues/282

Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20211124193233.3115996-2-andrii@kernel.org
This commit is contained in:
Andrii Nakryiko
2021-11-24 11:32:30 -08:00
committed by Andrii Nakryiko
parent 5c31bcf220
commit 6cfb97c561
7 changed files with 124 additions and 151 deletions
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5
src/bpf_gen_internal.h
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@@ -51,7 +51,10 @@ void bpf_gen__init(struct bpf_gen *gen, int log_level, int nr_progs, int nr_maps
int bpf_gen__finish(struct bpf_gen *gen, int nr_progs, int nr_maps);
void bpf_gen__free(struct bpf_gen *gen);
void bpf_gen__load_btf(struct bpf_gen *gen, const void *raw_data, __u32 raw_size);
void bpf_gen__map_create(struct bpf_gen *gen, struct bpf_create_map_params *map_attr, int map_idx);
void bpf_gen__map_create(struct bpf_gen *gen,
enum bpf_map_type map_type, const char *map_name,
__u32 key_size, __u32 value_size, __u32 max_entries,
struct bpf_map_create_opts *map_attr, int map_idx);
void bpf_gen__prog_load(struct bpf_gen *gen,
enum bpf_prog_type prog_type, const char *prog_name,
const char *license, struct bpf_insn *insns, size_t insn_cnt,