From 7dad3237e45fa21172e4dd9a38ea3db5deddd8fd Mon Sep 17 00:00:00 2001
From: Kaze <89641145+shiinakaze@users.noreply.github.com>
Date: Sat, 15 Nov 2025 18:07:39 +0800
Subject: [PATCH] Revise ESP-NETIF diagram for clarity

Updated the diagram to clarify the data and event flow in the ESP-NETIF architecture.
---
 .../zh_CN/api-reference/network/esp_netif.rst | 72 +++++++++----------
 1 file changed, 36 insertions(+), 36 deletions(-)

diff --git a/docs/zh_CN/api-reference/network/esp_netif.rst b/docs/zh_CN/api-reference/network/esp_netif.rst
index 7e6e0e6cd99a..be9b9cf77f6c 100644
--- a/docs/zh_CN/api-reference/network/esp_netif.rst
+++ b/docs/zh_CN/api-reference/network/esp_netif.rst
@@ -149,42 +149,42 @@ ESP-NETIF 架构
 .. code-block:: text
 
 
-                         |            (A) 用户代码                 |
-                         |                应用程序                 |
-        .................| 初始化            设置             事件  |
-        .                +----------------------------------------+
-        .                   .                |           *
-        .                   .                |           *
-    --------+            +===========================+   *     +-----------------------+
-            |            | 新建/配置   获取/设置/应用程序|   *     | 初始化                 |
-            |            |                           |...*.....| 应用程序 (DHCP, SNTP)  |
-            |            |---------------------------|   *     |                       |
-      初始化 |            |                           |****     |                       |
-      启动   |************|  事件处理程序               |*********|  DHCP                 |
-      停止   |            |                           |         |                       |
-            |            |---------------------------|         |                       |
-            |            |                           |         |    NETIF              |
-      +-----|            |                           |         +-----------------+     |
-      |胶水层|---<----|---|  esp_netif_transmit       |--<------| netif_output    |     |
-      |     |        |   |                           |         |                 |     |
-      |     |--->----|---|  esp_netif_receive        |-->------| netif_input     |     |
-      |     |        |   |                           |         + ----------------+     |
-      |     |...<....|...|  esp_netif_free_rx_buffer |...<.....| 数据包 buffer          |
-      +-----|     |  |   |                           |         |                       |
-            |     |  |   |                           |         |         (D)           |
-      (B)   |     |  |   |          (C)              |         +-----------------------+
-    --------+     |  |   +===========================+                 网络堆栈
-  网络             |  |           ESP-NETIF
-  接口             |  |
-  驱动             |  |   +--------------------------------+         +------------------+
-                  |  |   |                                |.........| 开启/关闭          |
-                  |  |   |                                |         |                  |
-                  |  -<--|  l2tap_write                   |-----<---|  写入             |
-                  |      |                                |         |                  |
-                  ---->--| esp_vfs_l2tap_eth_filter_frame |----->---|  读取             |
-                         |                                |         |        (A)       |
-                         |            (E)                 |         +------------------+
-                         +--------------------------------+                用户代码
+                       |          (A) USER CODE                 |
+                       |                   Apps                 |
+      .................| init            settings        events |
+      .                +----------------------------------------+
+      .                   .                  |              *
+      .                   .                  |              *
+  --------+            +================================+   *     +-----------------------+
+          |            | new/config      get/set/apps   |   *     | init                  |
+          |            |                                |...*.....| Apps (DHCP, SNTP)     |
+          |            |--------------------------------|   *     |                       |
+    init  |            |                                |****     |                       |
+    start |************|  event handler                 |*********|  DHCP                 |
+    stop  |            |                                |         |                       |
+          |            |--------------------------------|         |                       |
+          |            |                                |         |    NETIF              |
+    +-----|            |                                |         +-----------------+     |
+    | glue|---<----|---|  esp_netif_transmit            |--<------| netif_output    |     |
+    |     |        |   |                                |         |                 |     |
+    |     |--->----|---|  esp_netif_receive             |-->------| netif_input     |     |
+    |     |        |   |                                |         + ----------------+     |
+    |     |...<....|...|  esp_netif_free_rx_buffer      |...<.....| packet buffer         |
+    +-----|     |  |   |                                |         |                       |
+          |     |  |   |                                |         |         (D)           |
+    (B)   |     |  |   |              (C)               |         +-----------------------+
+  --------+     |  |   +================================+               NETWORK STACK
+NETWORK         |  |           ESP-NETIF
+INTERFACE       |  |
+DRIVER          |  |   +--------------------------------+         +------------------+
+                |  |   |                                |.........| open/close       |
+                |  |   |                                |         |                  |
+                |  -<--| l2tap_write                    |-----<---|  write           |
+                |      |                                |         |                  |
+                ---->--| esp_vfs_l2tap_eth_filter_frame |----->---|  read            |
+                       |                                |         |        (A)       |
+                       |              (E)               |         +------------------+
+                       +--------------------------------+              USER CODE
                                ESP-NETIF L2 TAP