fix(esp_eth): Fixed Ethernet link reset when Ethernet is stopped

components/esp_eth/include/esp_eth_phy.h

@@ -1,5 +1,5 @@
 /*
- * SPDX-FileCopyrightText: 2019-2021 Espressif Systems (Shanghai) CO LTD
+ * SPDX-FileCopyrightText: 2019-2024 Espressif Systems (Shanghai) CO LTD
  *
  * SPDX-License-Identifier: Apache-2.0
  */
@@ -128,6 +128,19 @@ struct esp_eth_phy_s {
     */
     esp_err_t (*get_link)(esp_eth_phy_t *phy);
 
+    /**
+    * @brief Set Ethernet PHY link status
+    *
+    * @param[in] phy: Ethernet PHY instance
+    * @param[in] link new link status
+    *
+    * @return
+    *      - ESP_OK: set Ethernet PHY link status successfully
+    *      - ESP_FAIL: set Ethernet PHY link status failed because some error occurred
+    *
+    */
+    esp_err_t (*set_link)(esp_eth_phy_t *phy, eth_link_t link);
+
     /**
     * @brief Power control of Ethernet PHY
     *

components/esp_eth/include/esp_eth_phy_802_3.h

@@ -150,6 +150,16 @@ esp_err_t esp_eth_phy_802_3_set_speed(phy_802_3_t *phy_802_3, eth_speed_t speed)
  */
 esp_err_t esp_eth_phy_802_3_set_duplex(phy_802_3_t *phy_802_3, eth_duplex_t duplex);
 
+/**
+ * @brief Set Ethernet PHY link status
+ *
+ * @param phy_802_3 IEEE 802.3 PHY object infostructure
+ * @param link new link status
+ * @return
+ *      - ESP_OK: Ethernet PHY link set successfuly
+ */
+esp_err_t esp_eth_phy_802_3_set_link(phy_802_3_t *phy_802_3, eth_link_t link);
+
 /**
  * @brief Initialize Ethernet PHY
  *