Commit ed1a1fe6 authored Aug 05, 2025 by Chenghao Duan Committed by Huacai Chen Aug 05, 2025

LoongArch: BPF: Rename and refactor validate_code()



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>

parent 6ab55e0a

arch/loongarch/net/bpf_jit.c

+9 −1

Original line number	Diff line number	Diff line
		@@ -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;