Merge branch 'bugfix/connect_issue_for_zero_rssi_v4.4' into 'release/…

…v4.4'

fix(esp_wifi): Fix issue of station disconnecting immediately after scanning (Backport v4.4)

See merge request espressif/esp-idf!26746

components/esp_wifi/include/esp_wifi.h

@@ -1174,7 +1174,8 @@ esp_err_t esp_wifi_statis_dump(uint32_t modules);
   * @attention  If the user wants to receive another WIFI_EVENT_STA_BSS_RSSI_LOW event after receiving one, this API needs to be
   *             called again with an updated/same RSSI threshold.
   *
-  * @param      rssi threshold value in dbm between -100 to 0
+  * @param      rssi threshold value in dbm between -100 to 10
+  *             Note that in some rare cases where signal strength is very strong, rssi values can be slightly positive.
   *
   * @return
   *    - ESP_OK: succeed

components/esp_wifi/include/esp_wifi_types.h

@@ -189,7 +189,7 @@ typedef struct {
     uint8_t ssid[33];                     /**< SSID of AP */
     uint8_t primary;                      /**< channel of AP */
     wifi_second_chan_t second;            /**< secondary channel of AP */
-    int8_t  rssi;                         /**< signal strength of AP */
+    int8_t  rssi;                         /**< signal strength of AP. Note that in some rare cases where signal strength is very strong, rssi values can be slightly positive */
     wifi_auth_mode_t authmode;            /**< authmode of AP */
     wifi_cipher_type_t pairwise_cipher;   /**< pairwise cipher of AP */
     wifi_cipher_type_t group_cipher;      /**< group cipher of AP */

components/wpa_supplicant/esp_supplicant/src/esp_common.c

@@ -33,7 +33,7 @@ static void *s_supplicant_api_lock = NULL;
 static bool s_supplicant_task_init_done;
 
 static int handle_action_frm(u8 *frame, size_t len,
-			     u8 *sender, u32 rssi, u8 channel)
+			     u8 *sender, int8_t rssi, u8 channel)
 {
 	struct ieee_mgmt_frame *frm = os_malloc(sizeof(struct ieee_mgmt_frame) + len);
 
@@ -57,7 +57,7 @@ static int handle_action_frm(u8 *frame, size_t len,
 }
 
 static void handle_rrm_frame(struct wpa_supplicant *wpa_s, u8 *sender,
-			     u8 *payload, size_t len, u32 rssi)
+			     u8 *payload, size_t len, int8_t rssi)
 {
 	if (payload[0] == WLAN_RRM_NEIGHBOR_REPORT_RESPONSE) {
 		/* neighbor report parsing */
@@ -73,7 +73,7 @@ static void handle_rrm_frame(struct wpa_supplicant *wpa_s, u8 *sender,
 	}
 }
 
-static int mgmt_rx_action(u8 *sender, u8 *payload, size_t len, u8 channel, u32 rssi)
+static int mgmt_rx_action(u8 *sender, u8 *payload, size_t len, u8 channel, int8_t rssi)
 {
 	u8 category;
 	u8 bssid[ETH_ALEN];
@@ -196,7 +196,7 @@ void esp_supplicant_unset_all_appie(void)
 }
 
 static int ieee80211_handle_rx_frm(u8 type, u8 *frame, size_t len, u8 *sender,
-				   u32 rssi, u8 channel, u64 current_tsf)
+				   int8_t rssi, u8 channel, u64 current_tsf)
 {
 	int ret = 0;
 

components/wpa_supplicant/esp_supplicant/src/esp_common_i.h

@@ -1,5 +1,5 @@
 /*
- * SPDX-FileCopyrightText: 2020-2021 Espressif Systems (Shanghai) CO LTD
+ * SPDX-FileCopyrightText: 2020-2023 Espressif Systems (Shanghai) CO LTD
  *
  * SPDX-License-Identifier: Apache-2.0
  */
@@ -15,7 +15,7 @@ struct wpa_funcs;
 struct ieee_mgmt_frame {
 	u8 sender[ETH_ALEN];
 	u8 channel;
-	u32 rssi;
+	int8_t rssi;
 	size_t len;
 	u8 payload[0];
 };

components/wpa_supplicant/esp_supplicant/src/esp_scan.c

@@ -1,5 +1,5 @@
 /*
- * SPDX-FileCopyrightText: 2020-2021 Espressif Systems (Shanghai) CO LTD
+ * SPDX-FileCopyrightText: 2020-2023 Espressif Systems (Shanghai) CO LTD
  *
  * SPDX-License-Identifier: Apache-2.0
  */
@@ -109,7 +109,7 @@ void esp_scan_deinit(struct wpa_supplicant *wpa_s)
 }
 
 int esp_handle_beacon_probe(u8 type, u8 *frame, size_t len, u8 *sender,
-			    u32 rssi, u8 channel, u64 current_tsf)
+			    int8_t rssi, u8 channel, u64 current_tsf)
 {
 	struct wpa_supplicant *wpa_s = &g_wpa_supp;
 	struct os_reltime now;

components/wpa_supplicant/esp_supplicant/src/esp_scan_i.h

@@ -1,25 +1,15 @@
-/**
- * Copyright 2020 Espressif Systems (Shanghai) PTE LTD
+/*
+ * SPDX-FileCopyrightText: 2020-2023 Espressif Systems (Shanghai) CO 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-License-Identifier: Apache-2.0
  */
 
 #ifndef ESP_SCAN_I_H
 #define ESP_SCAN_I_H
 void esp_scan_init(struct wpa_supplicant *wpa_s);
 void esp_scan_deinit(struct wpa_supplicant *wpa_s);
 int esp_handle_beacon_probe(u8 type, u8 *frame, size_t len, u8 *sender,
-			    u32 rssi, u8 channel, u64 current_tsf);
+			    int8_t rssi, u8 channel, u64 current_tsf);
 
 void esp_supplicant_handle_scan_done_evt(void);
 #endif

components/wpa_supplicant/esp_supplicant/src/esp_wifi_driver.h

@@ -129,7 +129,7 @@ struct wpa_funcs {
     int (*wpa_michael_mic_failure)(u16 is_unicast);
     uint8_t *(*wpa3_build_sae_msg)(uint8_t *bssid, uint32_t type, size_t *len);
     int (*wpa3_parse_sae_msg)(uint8_t *buf, size_t len, uint32_t type, uint16_t status);
-    int (*wpa_sta_rx_mgmt)(u8 type, u8 *frame, size_t len, u8 *sender, u32 rssi, u8 channel, u64 current_tsf);
+    int (*wpa_sta_rx_mgmt)(u8 type, u8 *frame, size_t len, u8 *sender, int8_t rssi, u8 channel, u64 current_tsf);
     void (*wpa_config_done)(void);
     bool (*wpa_sta_profile_match)(u8 *bssid);
     int (*wpa_sta_set_ap_rsnxe)(const u8 *rsnxe, size_t rsnxe_ie_len);