Merge pull request kmesh-net#565 from Okabe-Rintarou-0/docs/enhance_k…

…ernel

add document about using enhanced kernel

docs/kmesh_deploy_and_develop_in_kind.md

@@ -1,6 +1,6 @@
 # Kmesh Deploy and Develop in Kind
 
-[Kind](https://github.com/kubernetes-sigs/kind) is a convenient tool for quickly deploying kubernetes cluster locally. We can use `kind` to create an `istio` cluster and deploy `kmesh` on it.
+[Kind](https://github.com/kubernetes-sigs/kind) is a convenient tool for quickly deploying kubernetes cluster locally. We can use `kind` to create an `istio` cluster and deploy `kmesh`.
 
 ## Deploy Kmesh in Kind
 
@@ -143,7 +143,7 @@ You can follow the steps below to develop in kind:
     make clean
     ```
 
-    to cleanup this changes before you execute `git add` command.
+    to cleanup these changes before you execute `git add` command.
 
 ## Reference
 + Getting Started: https://istio.io/latest/docs/ambient/getting-started/

docs/kmesh_use_enhanced_kernel.md

@@ -0,0 +1,30 @@
+# Use Enhanced Kernel in Kmesh
+
+Some features of kmesh depend on enhanced kernel (e.g., L7 traffic control in ads mode). To utilize it, you can use `openEuler 23.03`, which natively supports all features.
+
+You can follow the steps below to use enhanced kernel:
+
++ Download `openEuler 23.03` image on: https://repo.openeuler.org/openEuler-23.03/ISO/.
++ Install the operation system: Here, we take [VMware](https://www.vmware.com/products/workstation-pro/html.html) for example (you can also use other VM management tools). 
+
+    ![](./pics/install_openEuler.png)
+
+    Notice that `openEuler 23.03`'s kernel version is **6.1.19**. So you should select `其他 Linux 6.x 内核 64位`(`Linux 6.x kernel 64bit`). 
+
+    Then, you can follow the [official blog](https://www.openeuler.org/zh/blog/20240306vmware/20240306vmware.html) to install it.
+
++ Install kernel headers: Kmesh determines whether the enhanced kernel is utilized according to some kernel headers(e.g., `bpf.h`). So, you should install kernel headers by:
+
+    ```shell
+    yum install kernel-headers
+    ```
+
+    Then, you should be able to find the kernel headers in the path `/usr/include/linux`.
+
++ Check whether you are ready to use enhanced kernel: 
+
+    ```shell
+    grep -q "FN(parse_header_msg)" /usr/include/linux/bpf.h && echo "enhanced" || echo "unenhanced"
+    ```
+
+Now you can follow the [deploy and develop guide](./kmesh_deploy_and_develop_in_kind.md) to explore kmesh's full features.