1.xtensa/esp32s3: configure the number of universal management

(IEEE) MAC addresses when there are multipleinterfaces.
2.Optimize Lan9250 to adapt to ESP32S3 universalMAC address.

arch/xtensa/src/esp32s3/Kconfig

@@ -1682,6 +1682,44 @@ config ESP32S3_BLE_INTERRUPT_SAVE_STATUS
 
 endmenu # BLE Configuration
 
+choice ESP32S3_UNIVERSAL_MAC_ADDRESSES
+	bool "Number of universally administered (by IEEE) MAC address"
+	default ESP32S3_UNIVERSAL_MAC_ADDRESSES_FOUR
+	depends on ESP32S3_WIFI || ESP32S3_BLE
+	help
+		Configure the number of universally administered (by IEEE) MAC addresses.
+		During initialization, MAC addresses for each network interface are generated or derived from a
+		single base MAC address.
+		If the number of universal MAC addresses is four, all four interfaces (WiFi station, WiFi softap,
+		Bluetooth and Ethernet) receive a universally administered MAC address. These are generated
+		sequentially by adding 0, 1, 2 and 3 (respectively) to the final octet of the base MAC address.
+		If the number of universal MAC addresses is two, only two interfaces (WiFi station and Bluetooth)
+		receive a universally administered MAC address. These are generated sequentially by adding 0
+		and 1 (respectively) to the base MAC address. The remaining two interfaces (WiFi softap and Ethernet)
+		receive local MAC addresses. These are derived from the universal WiFi station and Bluetooth MAC
+		addresses, respectively.
+		When using the default (Espressif-assigned) base MAC address, either setting can be used. When using
+		a custom universal MAC address range, the correct setting will depend on the allocation of MAC
+		addresses in this range (either 2 or 4 per device.)
+
+	config ESP32S3_UNIVERSAL_MAC_ADDRESSES_TWO
+		bool "Two"
+		select ESP_MAC_ADDR_UNIVERSE_WIFI_STA
+		select ESP_MAC_ADDR_UNIVERSE_BT
+
+	config ESP32S3_UNIVERSAL_MAC_ADDRESSES_FOUR
+		bool "Four"
+		select ESP_MAC_ADDR_UNIVERSE_WIFI_STA
+		select ESP_MAC_ADDR_UNIVERSE_WIFI_AP
+		select ESP_MAC_ADDR_UNIVERSE_BT
+		select ESP_MAC_ADDR_UNIVERSE_ETH
+endchoice
+
+config ESP32S3_UNIVERSAL_MAC_ADDRESSES
+	int
+	default 2 if ESP32S3_UNIVERSAL_MAC_ADDRESSES_TWO
+	default 4 if ESP32S3_UNIVERSAL_MAC_ADDRESSES_FOUR
+
 menu "PHY"
 	depends on ESP32S3_PARTITION_TABLE
 

boards/xtensa/esp32s3/common/src/esp32s3_lan9250.c

@@ -55,7 +55,7 @@ static int lan9250_attach(const struct lan9250_lower_s *lower,
                           xcpt_t handler, void *arg);
 static void lan9250_enable(const struct lan9250_lower_s *lower);
 static void lan9250_disable(const struct lan9250_lower_s *lower);
-static void lan9250_getmac(const struct lan9250_lower_s *lower,
+static int lan9250_getmac(const struct lan9250_lower_s *lower,
                            uint8_t *mac);
 
 /****************************************************************************
@@ -175,18 +175,44 @@ static void lan9250_disable(const struct lan9250_lower_s *lower)
  *
  ****************************************************************************/
 
-static void lan9250_getmac(const struct lan9250_lower_s *lower, uint8_t *mac)
+static int lan9250_getmac(const struct lan9250_lower_s *lower, uint8_t *mac)
 {
   uint32_t regval[2];
   uint8_t *data = (uint8_t *)regval;
+  int i;
 
   regval[0] = esp32s3_efuse_read_reg(EFUSE_BLK1, 0);
   regval[1] = esp32s3_efuse_read_reg(EFUSE_BLK1, 1);
 
-  for (int i = 0; i < 6; i++)
+  for (i = 0; i < 6; i++)
     {
-      mac[i] = data[i];
+      mac[i] = data[5 - i];
     }
+
+#ifdef CONFIG_ESP32S3_UNIVERSAL_MAC_ADDRESSES_FOUR
+  mac[5] += 3;
+#else
+  mac[5] += 1;
+  uint8_t tmp = mac[0];
+  for (i = 0; i < 64; i++)
+    {
+      mac[0] = tmp | 0x02;
+      mac[0] ^= i << 2;
+
+      if (mac[0] != tmp)
+        {
+          break;
+        }
+    }
+
+  if (i >= 64)
+    {
+      wlerr("Failed to generate ethernet MAC\n");
+      return -1;
+    }
+#endif
+
+  return 0;
 }
 
 /****************************************************************************

drivers/net/lan9250.c

@@ -2472,7 +2472,11 @@ int lan9250_initialize(
 
   if (lower->getmac)
     {
-      lower->getmac(lower, priv->dev.d_mac.ether.ether_addr_octet);
+      if (lower->getmac(lower, priv->dev.d_mac.ether.ether_addr_octet) < 0)
+        {
+          nerr("ERROR: Failed read MAC address\n");
+          return -EAGAIN;
+        }
     }
 
   /* Register the device with the OS so that socket IOCTLs can be performed */

include/nuttx/net/lan9250.h

@@ -66,7 +66,7 @@ struct lan9250_lower_s
    * driver will not read the MAC from the CPU.
    */
 
-  CODE void (*getmac)(FAR const struct lan9250_lower_s *lower,
+  CODE int (*getmac)(FAR const struct lan9250_lower_s *lower,
                       FAR uint8_t *mac);
 };