diff --git a/components/esp_wifi/include/esp_mesh.h b/components/esp_wifi/include/esp_mesh.h
index 0666b182e0..a69bf478c5 100644
--- a/components/esp_wifi/include/esp_mesh.h
+++ b/components/esp_wifi/include/esp_mesh.h
@@ -616,7 +616,7 @@ esp_err_t esp_mesh_stop(void);
  *               - If the packet is to the root ("to" parameter isn't NULL) or to external IP network, MESH_DATA_TODS should be set.
  *               - If the packet is from the root to an internal device, MESH_DATA_FROMDS should be set.
  *             - Specify whether this API is block or non-block, block by default
- *               - If needs non-block, MESH_DATA_NONBLOCK should be set.
+ *               - If needs non-blocking, MESH_DATA_NONBLOCK should be set. Otherwise, may use esp_mesh_send_block_time() to specify a blocking time.
  *             - In the situation of the root change, MESH_DATA_DROP identifies this packet can be dropped by the new root
  *               for upstream data to external IP network, we try our best to avoid data loss caused by the root change, but
  *               there is a risk that the new root is running out of memory because most of memory is occupied by the pending data which
@@ -649,6 +649,17 @@ esp_err_t esp_mesh_stop(void);
  */
 esp_err_t esp_mesh_send(const mesh_addr_t *to, const mesh_data_t *data,
                         int flag, const mesh_opt_t opt[],  int opt_count);
+/**
+ * @brief      Set blocking time of esp_mesh_send()
+ *
+ * @attention  This API shall be called before mesh is started.
+ *
+ * @param[in]  time_ms  blocking time of esp_mesh_send(), unit:ms
+ *
+ * @return
+ *    - ESP_OK
+ */
+esp_err_t esp_mesh_send_block_time(uint32_t time_ms);
 
 /**
  * @brief      Receive a packet targeted to self over the mesh network
diff --git a/components/esp_wifi/lib_esp32 b/components/esp_wifi/lib_esp32
index 64404ba1a0..f730ff7ce0 160000
--- a/components/esp_wifi/lib_esp32
+++ b/components/esp_wifi/lib_esp32
@@ -1 +1 @@
-Subproject commit 64404ba1a0624e78f06633b1ac55b4aa7ab4db91
+Subproject commit f730ff7ce07282c45fab3bdf2f42eddf7e14bce8