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LoongArch: BPF: Rename and refactor validate_code()

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

Then:

* 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.

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>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
This commit is contained in:
Chenghao Duan 2025-08-05 19:00:18 +08:00 committed by Huacai Chen
parent 6ab55e0a9e
commit ed1a1fe6ec
1 changed files with 9 additions and 1 deletions
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10
arch/loongarch/net/bpf_jit.c
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@ -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;