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libbpf: Split CO-RE logic into relo_core.c.
Move CO-RE logic into separate file. The internal interface between libbpf and CO-RE is through bpf_core_apply_relo_insn() function and few structs defined in relo_core.h. Signed-off-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Link: https://lore.kernel.org/bpf/20210721000822.40958-5-alexei.starovoitov@gmail.com
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1297
src/libbpf.c
1297
src/libbpf.c
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@ -425,4 +425,14 @@ static inline void *libbpf_ptr(void *ret)
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return ret;
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}
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static inline bool str_is_empty(const char *s)
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{
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return !s || !s[0];
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}
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static inline bool is_ldimm64_insn(struct bpf_insn *insn)
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{
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return insn->code == (BPF_LD | BPF_IMM | BPF_DW);
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}
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#endif /* __LIBBPF_LIBBPF_INTERNAL_H */
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1295
src/relo_core.c
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1295
src/relo_core.c
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@ -75,8 +75,7 @@ struct bpf_core_relo {
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enum bpf_core_relo_kind kind;
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};
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struct bpf_core_cand
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{
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struct bpf_core_cand {
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const struct btf *btf;
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const struct btf_type *t;
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const char *name;
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@ -89,4 +88,13 @@ struct bpf_core_cand_list {
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int len;
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};
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int bpf_core_apply_relo_insn(const char *prog_name,
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struct bpf_insn *insn, int insn_idx,
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const struct bpf_core_relo *relo, int relo_idx,
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const struct btf *local_btf,
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struct bpf_core_cand_list *cands);
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int bpf_core_types_are_compat(const struct btf *local_btf, __u32 local_id,
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const struct btf *targ_btf, __u32 targ_id);
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size_t bpf_core_essential_name_len(const char *name);
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#endif
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