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libbpf: Add enum64 relocation support

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The enum64 relocation support is added. The bpf local type
could be either enum or enum64 and the remote type could be
either enum or enum64 too. The all combinations of local enum/enum64
and remote enum/enum64 are supported.

Acked-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Yonghong Song <yhs@fb.com>
Link: https://lore.kernel.org/r/20220607062647.3721719-1-yhs@fb.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
This commit is contained in:
Yonghong Song
2022-06-06 23:26:47 -07:00
committed by Andrii Nakryiko
parent 3f9d041e19
commit 416351822c
3 changed files with 48 additions and 20 deletions
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7
src/libbpf.c
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@@ -5524,7 +5524,7 @@ int bpf_core_add_cands(struct bpf_core_cand *local_cand,
n = btf__type_cnt(targ_btf);
for (i = targ_start_id; i < n; i++) {
t = btf__type_by_id(targ_btf, i);
if (btf_kind(t) != btf_kind(local_t))
if (!btf_kind_core_compat(t, local_t))
continue;
targ_name = btf__name_by_offset(targ_btf, t->name_off);
@@ -5738,7 +5738,7 @@ int bpf_core_types_are_compat(const struct btf *local_btf, __u32 local_id,
/* caller made sure that names match (ignoring flavor suffix) */
local_type = btf__type_by_id(local_btf, local_id);
targ_type = btf__type_by_id(targ_btf, targ_id);
if (btf_kind(local_type) != btf_kind(targ_type))
if (!btf_kind_core_compat(local_type, targ_type))
return 0;
recur:
@@ -5751,7 +5751,7 @@ recur:
if (!local_type || !targ_type)
return -EINVAL;
if (btf_kind(local_type) != btf_kind(targ_type))
if (!btf_kind_core_compat(local_type, targ_type))
return 0;
switch (btf_kind(local_type)) {
@@ -5759,6 +5759,7 @@ recur:
case BTF_KIND_STRUCT:
case BTF_KIND_UNION:
case BTF_KIND_ENUM:
case BTF_KIND_ENUM64:
case BTF_KIND_FWD:
return 1;
case BTF_KIND_INT: