Merge branch 'bugfix/modify_wifi_max_conn_num' into 'master'

esp_wifi: modify wifi max conn num

Closes IDFGH-7960, WIFI-4176, IDFGH-8431, and WIFI-5004

See merge request espressif/esp-idf!19367

components/esp_wifi/Kconfig

@@ -385,4 +385,19 @@ menu "Wi-Fi"
             Delta timeout time for rf phy off, When the beacon is lost, the next rf phy off will
             be delayed for the time specified by the configuration item. Unit: 1024 microsecond.
 
+    config ESP_WIFI_ESPNOW_MAX_ENCRYPT_NUM
+        int "Maximum espnow encrypt peers number"
+        range 0 4 if IDF_TARGET_ESP32C2
+        range 0 16 if (!IDF_TARGET_ESP32C2)
+        default 2 if IDF_TARGET_ESP32C2
+        default 6 if !IDF_TARGET_ESP32C2
+        help
+            Maximum number of encrypted peers supported by espnow.
+            The number of hardware keys for encryption is fixed. And the espnow and SoftAP share the same
+            hardware keys. So this configuration will affect the maximum connection number of SoftAP.
+            Maximum espnow encrypted peers number + maximum number of connections of SoftAP = Max hardware keys number.
+
+            When using ESP mesh, this value should be set to a maximum of 6.
+
+
 endmenu  # Wi-Fi

components/esp_wifi/include/esp_mesh_internal.h

@@ -1,16 +1,8 @@
-// Copyright 2017-2018 Espressif Systems (Shanghai) PTE LTD
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
+/*
+ * SPDX-FileCopyrightText: 2017-2021 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
 
 #ifndef __ESP_MESH_INTERNAL_H__
 #define __ESP_MESH_INTERNAL_H__
@@ -107,6 +99,9 @@ typedef struct {
     mesh_chain_layer_t chain;
 } __attribute__((packed)) mesh_chain_assoc_t;
 
+/* mesh max connections */
+#define MESH_MAX_CONNECTIONS (10)
+
 /**
  * @brief Mesh PS duties
  */
@@ -117,7 +112,7 @@ typedef struct {
         bool used;
         uint8_t duty;
         uint8_t mac[6];
-    } child[ESP_WIFI_MAX_CONN_NUM];
+    } child[MESH_MAX_CONNECTIONS];
 } esp_mesh_ps_duties_t;
 
 /*******************************************************

components/esp_wifi/include/esp_wifi.h

@@ -107,6 +107,7 @@ typedef struct {
     int                    mgmt_sbuf_num;          /**< WiFi management short buffer number, the minimum value is 6, the maximum value is 32 */
     uint64_t               feature_caps;           /**< Enables additional WiFi features and capabilities */
     bool                   sta_disconnected_pm;    /**< WiFi Power Management for station at disconnected status */
+    int                    espnow_max_encrypt_num; /**< Maximum encrypt number of peers supported by espnow */
     int                    magic;                  /**< WiFi init magic number, it should be the last field */
 } wifi_init_config_t;
 
@@ -225,6 +226,7 @@ extern uint64_t g_wifi_feature_caps;
     .mgmt_sbuf_num = WIFI_MGMT_SBUF_NUM, \
     .feature_caps = g_wifi_feature_caps, \
     .sta_disconnected_pm = WIFI_STA_DISCONNECTED_PM_ENABLED,  \
+    .espnow_max_encrypt_num = CONFIG_ESP_WIFI_ESPNOW_MAX_ENCRYPT_NUM, \
     .magic = WIFI_INIT_CONFIG_MAGIC\
 }
 

components/esp_wifi/include/esp_wifi_types.h

@@ -315,7 +315,7 @@ typedef struct {
 #if CONFIG_IDF_TARGET_ESP32C2
 #define ESP_WIFI_MAX_CONN_NUM  (4)        /**< max number of stations which can connect to ESP32C2 soft-AP */
 #else
-#define ESP_WIFI_MAX_CONN_NUM  (10)       /**< max number of stations which can connect to ESP32 soft-AP */
+#define ESP_WIFI_MAX_CONN_NUM  (16)       /**< max number of stations which can connect to ESP32/ESP32S3/ESP32S2/ESP32C3 soft-AP */
 #endif
 
 /** @brief List of stations associated with the ESP32 Soft-AP */

docs/en/api-reference/network/esp_now.rst

@@ -68,15 +68,11 @@ Call :cpp:func:`esp_now_add_peer()` to add the device to the paired device list
 
 .. only:: esp32c2
 
-    The maximum number of paired devices is 20, and the paired encryption devices are no more than 4, the default is 2. 
+    The maximum number of paired devices is 20, and the paired encryption devices are no more than 4, the default is 2. If you want to change the number of paired encryption devices, set :ref:`CONFIG_ESP_WIFI_ESPNOW_MAX_ENCRYPT_NUM` in WiFi component configuration menu.
 
-.. only:: esp32c3
+.. only:: esp32 or esp32s2 or esp32s3 or esp32c3
 
-    The maximum number of paired devices is 20, and the paired encryption devices are no more than 10, the default is 6. 
-
-.. only:: esp32 or esp32s2 or esp32s3 
-
-    The maximum number of paired devices is 20, and the paired encryption devices are no more than 16, the default is 6. 
+    The maximum number of paired devices is 20, and the paired encryption devices are no more than 16, the default is 6. If you want to change the number of paired encryption devices, set :ref:`CONFIG_ESP_WIFI_ESPNOW_MAX_ENCRYPT_NUM` in WiFi component configuration menu.
 
 A device with a broadcast MAC address must be added before sending broadcast data. The range of the channel of paired devices is from 0 to 14. If the channel is set to 0, data will be sent on the current channel. Otherwise, the channel must be set as the channel that the local device is on.
 

docs/zh_CN/api-reference/network/esp_now.rst

@@ -68,15 +68,11 @@ ESP-NOW 采用 CCMP 方法保护供应商特定动作帧的安全，具体可参
 
 .. only:: esp32c2
 
-    配对设备的最大数量是 20，其中加密设备的数量不超过 4，默认值是 2。
+    配对设备的最大数量是 20，其中加密设备的数量不超过 4，默认值是 2。如果想要修改加密设备的数量，在 WiFi menuconfig 设置 :ref:`CONFIG_ESP_WIFI_ESPNOW_MAX_ENCRYPT_NUM`。
 
-.. only:: esp32c3
+.. only:: esp32 or esp32s2 or esp32s3 or esp32c3
 
-    配对设备的最大数量是 20，其中加密设备的数量不超过 10，默认值是 6。
-
-.. only:: esp32 or esp32s2 or esp32s3
-
-    配对设备的最大数量是 20，其中加密设备的数量不超过 16，默认值是 6。
+    配对设备的最大数量是 20，其中加密设备的数量不超过 16，默认值是 6。如果想要修改加密设备的数量，在 WiFi menuconfig 设置 :ref:`CONFIG_ESP_WIFI_ESPNOW_MAX_ENCRYPT_NUM`。
 
 在发送广播数据之前必须添加具有广播 MAC 地址的设备。配对设备的信道范围是从 0 ～14。如果信道设置为 0，数据将在当前信道上发送。否则，必须使用本地设备所在的通道。
 

tools/ci/check_copyright_ignore.txt

@@ -601,7 +601,6 @@ components/esp_system/test_eh_frame_parser/eh_frame_parser_impl.h
 components/esp_system/test_eh_frame_parser/esp_private/panic_internal.h
 components/esp_system/test_eh_frame_parser/linker.ld
 components/esp_system/ubsan.c
-components/esp_wifi/include/esp_mesh_internal.h
 components/esp_wifi/include/esp_private/esp_wifi_types_private.h
 components/esp_wifi/include/esp_private/wifi_types.h
 components/esp_wifi/include/esp_smartconfig.h