Commit a1b669ea authored by Amery Hung's avatar Amery Hung Committed by Martin KaFai Lau
Browse files

bpf: Prepare to reuse get_ctx_arg_idx 



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

Signed-off-by: default avatarAmery Hung <ameryhung@gmail.com>
Signed-off-by: default avatarMartin KaFai Lau <martin.lau@kernel.org>
Acked-by: default avatarToke Høiland-Jørgensen <toke@redhat.com>
Link: https://patch.msgid.link/20250409214606.2000194-2-ameryhung@gmail.com
parent ab734b43

include/linux/btf.h

+1 −0
Original line number Diff line number Diff line
@@ -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;

kernel/bpf/btf.c

+3 −3
Original line number Diff line number Diff line
@@ -6391,7 +6391,7 @@ 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,

u32 btf_ctx_arg_idx(struct btf *btf, const struct btf_type *func_proto,

		    int off)

{

	const struct btf_param *args;
@@ -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.