Rename the existing validate_code() to validate_ctx()
Factor out the code validation handling into a new helper validate_code()

* validate_code is used to check the validity of code.
* validate_ctx is used to check both code validity and table entry
  correctness.

The new validate_code() will be used in subsequent changes.

Co-developed-by: George Guo <guodongtai@kylinos.cn>
Signed-off-by: George Guo <guodongtai@kylinos.cn>
Signed-off-by: Chenghao Duan <duanchenghao@kylinos.cn>
---
 arch/loongarch/net/bpf_jit.c | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/arch/loongarch/net/bpf_jit.c b/arch/loongarch/net/bpf_jit.c
index fa1500d4a..7032f11d3 100644
--- a/arch/loongarch/net/bpf_jit.c
+++ b/arch/loongarch/net/bpf_jit.c
@@ -1180,6 +1180,14 @@ static int validate_code(struct jit_ctx *ctx)
 			return -1;
 	}
 
+	return 0;
+}
+
+static int validate_ctx(struct jit_ctx *ctx)
+{
+	if (validate_code(ctx))
+		return -1;
+
 	if (WARN_ON_ONCE(ctx->num_exentries != ctx->prog->aux->num_exentries))
 		return -1;
 
@@ -1288,7 +1296,7 @@ struct bpf_prog *bpf_int_jit_compile(struct bpf_prog *prog)
 	build_epilogue(&ctx);
 
 	/* 3. Extra pass to validate JITed code */
-	if (validate_code(&ctx)) {
+	if (validate_ctx(&ctx)) {
 		bpf_jit_binary_free(header);
 		prog = orig_prog;
 		goto out_offset;
-- 
2.25.1

On Wed, Jul 30, 2025 at 9:13 PM Chenghao Duan <duanchenghao@kylinos.cn> wrote:
>
> Rename the existing validate_code() to validate_ctx()
> Factor out the code validation handling into a new helper validate_code()
>
> * validate_code is used to check the validity of code.
> * validate_ctx is used to check both code validity and table entry
>   correctness.
>
> The new validate_code() will be used in subsequent changes.
>

I still feel uncomfortable about the subject line.
Hope Huacai can rephrase it when apply.
other than that,

Reviewed-by: Hengqi Chen <hengqi.chen@gmail.com>

> Co-developed-by: George Guo <guodongtai@kylinos.cn>
> Signed-off-by: George Guo <guodongtai@kylinos.cn>
> Signed-off-by: Chenghao Duan <duanchenghao@kylinos.cn>
> ---
>  arch/loongarch/net/bpf_jit.c | 10 +++++++++-
>  1 file changed, 9 insertions(+), 1 deletion(-)
>
> diff --git a/arch/loongarch/net/bpf_jit.c b/arch/loongarch/net/bpf_jit.c
> index fa1500d4a..7032f11d3 100644
> --- a/arch/loongarch/net/bpf_jit.c
> +++ b/arch/loongarch/net/bpf_jit.c
> @@ -1180,6 +1180,14 @@ static int validate_code(struct jit_ctx *ctx)
>                         return -1;
>         }
>
> +       return 0;
> +}
> +
> +static int validate_ctx(struct jit_ctx *ctx)
> +{
> +       if (validate_code(ctx))
> +               return -1;
> +
>         if (WARN_ON_ONCE(ctx->num_exentries != ctx->prog->aux->num_exentries))
>                 return -1;
>
> @@ -1288,7 +1296,7 @@ struct bpf_prog *bpf_int_jit_compile(struct bpf_prog *prog)
>         build_epilogue(&ctx);
>
>         /* 3. Extra pass to validate JITed code */
> -       if (validate_code(&ctx)) {
> +       if (validate_ctx(&ctx)) {
>                 bpf_jit_binary_free(header);
>                 prog = orig_prog;
>                 goto out_offset;
> --
> 2.25.1
>