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bpf: Prepare to reuse get_ctx_arg_idx

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Rename get_ctx_arg_idx to bpf_ctx_arg_idx, and allow others to call it.
No functional change.

Signed-off-by: Amery Hung <ameryhung@gmail.com>
Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org>
Acked-by: Toke Høiland-Jørgensen <toke@redhat.com>
Link: https://patch.msgid.link/20250409214606.2000194-2-ameryhung@gmail.com
This commit is contained in:
Amery Hung
2025-04-09 14:45:57 -07:00
committed by Martin KaFai Lau
parent ab734b43c8
commit a1b669ea16
2 changed files with 4 additions and 3 deletions
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1
include/linux/btf.h
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@@ -522,6 +522,7 @@ bool btf_param_match_suffix(const struct btf *btf,
const char *suffix);
int btf_ctx_arg_offset(const struct btf *btf, const struct btf_type *func_proto,
u32 arg_no);
u32 btf_ctx_arg_idx(struct btf *btf, const struct btf_type *func_proto, int off);
struct bpf_verifier_log;

6
kernel/bpf/btf.c
View File

@@ -6391,8 +6391,8 @@ static bool is_int_ptr(struct btf *btf, const struct btf_type *t)
return btf_type_is_int(t);
}
static u32 get_ctx_arg_idx(struct btf *btf, const struct btf_type *func_proto,
int off)
u32 btf_ctx_arg_idx(struct btf *btf, const struct btf_type *func_proto,
int off)
{
const struct btf_param *args;
const struct btf_type *t;
@@ -6671,7 +6671,7 @@ bool btf_ctx_access(int off, int size, enum bpf_access_type type,
tname, off);
return false;
}
arg = get_ctx_arg_idx(btf, t, off);
arg = btf_ctx_arg_idx(btf, t, off);
args = (const struct btf_param *)(t + 1);
/* if (t == NULL) Fall back to default BPF prog with
* MAX_BPF_FUNC_REG_ARGS u64 arguments.