[Unstable,1/1] r8152: Add macpassthru support for ThinkPad Thunderbolt 3 Dock Gen 2
diff mbox series

Message ID 20191113035233.1942-3-kai.heng.feng@canonical.com
State New
Headers show
Series
  • Support Lenovo Dock MAC passthrough
Related show

Commit Message

Kai-Heng Feng Nov. 13, 2019, 3:52 a.m. UTC
BugLink: https://bugs.launchpad.net/bugs/1827961

ThinkPad Thunderbolt 3 Dock Gen 2 is another docking station that uses
RTL8153 based USB ethernet.

The device supports macpassthru, but it failed to pass the test of -AD,
-BND and -BD. Simply bypass these tests since the device supports this
feature just fine.

Also the ACPI objects have some differences between Dell's and Lenovo's,
so make those ACPI infos no longer hardcoded.

BugLink: https://bugs.launchpad.net/bugs/1827961
Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
Acked-by: Hayes Wang <hayeswang@realtek.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
(cherry picked from commit 9647722befbedcd6735e00655ffec392c05f0c56 linux-next)
Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
---
 drivers/net/usb/cdc_ether.c |  7 +++++
 drivers/net/usb/r8152.c     | 58 +++++++++++++++++++++++++------------
 2 files changed, 46 insertions(+), 19 deletions(-)

Comments

Andrea Righi Nov. 28, 2019, 1:35 p.m. UTC | #1
On Wed, Nov 13, 2019 at 11:52:33AM +0800, Kai-Heng Feng wrote:
> BugLink: https://bugs.launchpad.net/bugs/1827961
> 
> ThinkPad Thunderbolt 3 Dock Gen 2 is another docking station that uses
> RTL8153 based USB ethernet.
> 
> The device supports macpassthru, but it failed to pass the test of -AD,
> -BND and -BD. Simply bypass these tests since the device supports this
> feature just fine.
> 
> Also the ACPI objects have some differences between Dell's and Lenovo's,
> so make those ACPI infos no longer hardcoded.
> 
> BugLink: https://bugs.launchpad.net/bugs/1827961
> Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
> Acked-by: Hayes Wang <hayeswang@realtek.com>
> Signed-off-by: David S. Miller <davem@davemloft.net>
> (cherry picked from commit 9647722befbedcd6735e00655ffec392c05f0c56 linux-next)

As Stefan pointed out already, it's upstream now so we can just drop
'linux-next' from the cherry picked line (SHA1 is the same).

Acked-by: Andrea Righi <andrea.righi@canonical.com>

> Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
> ---
>  drivers/net/usb/cdc_ether.c |  7 +++++
>  drivers/net/usb/r8152.c     | 58 +++++++++++++++++++++++++------------
>  2 files changed, 46 insertions(+), 19 deletions(-)
> 
> diff --git a/drivers/net/usb/cdc_ether.c b/drivers/net/usb/cdc_ether.c
> index fe630438f67b..0cdb2ce47645 100644
> --- a/drivers/net/usb/cdc_ether.c
> +++ b/drivers/net/usb/cdc_ether.c
> @@ -766,6 +766,13 @@ static const struct usb_device_id	products[] = {
>  	.driver_info = 0,
>  },
>  
> +/* ThinkPad Thunderbolt 3 Dock Gen 2 (based on Realtek RTL8153) */
> +{
> +	USB_DEVICE_AND_INTERFACE_INFO(LENOVO_VENDOR_ID, 0x3082, USB_CLASS_COMM,
> +			USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
> +	.driver_info = 0,
> +},
> +
>  /* Lenovo Thinkpad USB 3.0 Ethernet Adapters (based on Realtek RTL8153) */
>  {
>  	USB_DEVICE_AND_INTERFACE_INFO(LENOVO_VENDOR_ID, 0x7205, USB_CLASS_COMM,
> diff --git a/drivers/net/usb/r8152.c b/drivers/net/usb/r8152.c
> index d4a95b50bda6..014655ca37f2 100644
> --- a/drivers/net/usb/r8152.c
> +++ b/drivers/net/usb/r8152.c
> @@ -622,6 +622,7 @@ enum rtl8152_flags {
>  	SCHEDULE_TASKLET,
>  	GREEN_ETHERNET,
>  	DELL_TB_RX_AGG_BUG,
> +	LENOVO_MACPASSTHRU,
>  };
>  
>  /* Define these values to match your device */
> @@ -1222,38 +1223,52 @@ static int vendor_mac_passthru_addr_read(struct r8152 *tp, struct sockaddr *sa)
>  	int ret = -EINVAL;
>  	u32 ocp_data;
>  	unsigned char buf[6];
> -
> -	/* test for -AD variant of RTL8153 */
> -	ocp_data = ocp_read_word(tp, MCU_TYPE_USB, USB_MISC_0);
> -	if ((ocp_data & AD_MASK) == 0x1000) {
> -		/* test for MAC address pass-through bit */
> -		ocp_data = ocp_read_byte(tp, MCU_TYPE_USB, EFUSE);
> -		if ((ocp_data & PASS_THRU_MASK) != 1) {
> -			netif_dbg(tp, probe, tp->netdev,
> -				  "No efuse for RTL8153-AD MAC pass through\n");
> -			return -ENODEV;
> -		}
> +	char *mac_obj_name;
> +	acpi_object_type mac_obj_type;
> +	int mac_strlen;
> +
> +	if (test_bit(LENOVO_MACPASSTHRU, &tp->flags)) {
> +		mac_obj_name = "\\MACA";
> +		mac_obj_type = ACPI_TYPE_STRING;
> +		mac_strlen = 0x16;
>  	} else {
> -		/* test for RTL8153-BND and RTL8153-BD */
> -		ocp_data = ocp_read_byte(tp, MCU_TYPE_USB, USB_MISC_1);
> -		if ((ocp_data & BND_MASK) == 0 && (ocp_data & BD_MASK) == 0) {
> -			netif_dbg(tp, probe, tp->netdev,
> -				  "Invalid variant for MAC pass through\n");
> -			return -ENODEV;
> +		/* test for -AD variant of RTL8153 */
> +		ocp_data = ocp_read_word(tp, MCU_TYPE_USB, USB_MISC_0);
> +		if ((ocp_data & AD_MASK) == 0x1000) {
> +			/* test for MAC address pass-through bit */
> +			ocp_data = ocp_read_byte(tp, MCU_TYPE_USB, EFUSE);
> +			if ((ocp_data & PASS_THRU_MASK) != 1) {
> +				netif_dbg(tp, probe, tp->netdev,
> +						"No efuse for RTL8153-AD MAC pass through\n");
> +				return -ENODEV;
> +			}
> +		} else {
> +			/* test for RTL8153-BND and RTL8153-BD */
> +			ocp_data = ocp_read_byte(tp, MCU_TYPE_USB, USB_MISC_1);
> +			if ((ocp_data & BND_MASK) == 0 && (ocp_data & BD_MASK) == 0) {
> +				netif_dbg(tp, probe, tp->netdev,
> +						"Invalid variant for MAC pass through\n");
> +				return -ENODEV;
> +			}
>  		}
> +
> +		mac_obj_name = "\\_SB.AMAC";
> +		mac_obj_type = ACPI_TYPE_BUFFER;
> +		mac_strlen = 0x17;
>  	}
>  
>  	/* returns _AUXMAC_#AABBCCDDEEFF# */
> -	status = acpi_evaluate_object(NULL, "\\_SB.AMAC", NULL, &buffer);
> +	status = acpi_evaluate_object(NULL, mac_obj_name, NULL, &buffer);
>  	obj = (union acpi_object *)buffer.pointer;
>  	if (!ACPI_SUCCESS(status))
>  		return -ENODEV;
> -	if (obj->type != ACPI_TYPE_BUFFER || obj->string.length != 0x17) {
> +	if (obj->type != mac_obj_type || obj->string.length != mac_strlen) {
>  		netif_warn(tp, probe, tp->netdev,
>  			   "Invalid buffer for pass-thru MAC addr: (%d, %d)\n",
>  			   obj->type, obj->string.length);
>  		goto amacout;
>  	}
> +
>  	if (strncmp(obj->string.pointer, "_AUXMAC_#", 9) != 0 ||
>  	    strncmp(obj->string.pointer + 0x15, "#", 1) != 0) {
>  		netif_warn(tp, probe, tp->netdev,
> @@ -5632,6 +5647,10 @@ static int rtl8152_probe(struct usb_interface *intf,
>  		netdev->hw_features &= ~NETIF_F_RXCSUM;
>  	}
>  
> +	if (le16_to_cpu(udev->descriptor.idVendor) == VENDOR_ID_LENOVO &&
> +	    le16_to_cpu(udev->descriptor.idProduct) == 0x3082)
> +		set_bit(LENOVO_MACPASSTHRU, &tp->flags);
> +
>  	if (le16_to_cpu(udev->descriptor.bcdDevice) == 0x3011 && udev->serial &&
>  	    (!strcmp(udev->serial, "000001000000") || !strcmp(udev->serial, "000002000000"))) {
>  		dev_info(&udev->dev, "Dell TB16 Dock, disable RX aggregation");
> @@ -5752,6 +5771,7 @@ static const struct usb_device_id rtl8152_table[] = {
>  	{REALTEK_USB_DEVICE(VENDOR_ID_LENOVO,  0x304f)},
>  	{REALTEK_USB_DEVICE(VENDOR_ID_LENOVO,  0x3062)},
>  	{REALTEK_USB_DEVICE(VENDOR_ID_LENOVO,  0x3069)},
> +	{REALTEK_USB_DEVICE(VENDOR_ID_LENOVO,  0x3082)},
>  	{REALTEK_USB_DEVICE(VENDOR_ID_LENOVO,  0x7205)},
>  	{REALTEK_USB_DEVICE(VENDOR_ID_LENOVO,  0x720c)},
>  	{REALTEK_USB_DEVICE(VENDOR_ID_LENOVO,  0x7214)},
> -- 
> 2.17.1
> 
> 
> -- 
> kernel-team mailing list
> kernel-team@lists.ubuntu.com
> https://lists.ubuntu.com/mailman/listinfo/kernel-team
Andrea Righi Nov. 28, 2019, 1:37 p.m. UTC | #2
On Wed, Nov 13, 2019 at 11:52:33AM +0800, Kai-Heng Feng wrote:
> BugLink: https://bugs.launchpad.net/bugs/1827961
> 
> ThinkPad Thunderbolt 3 Dock Gen 2 is another docking station that uses
> RTL8153 based USB ethernet.
> 
> The device supports macpassthru, but it failed to pass the test of -AD,
> -BND and -BD. Simply bypass these tests since the device supports this
> feature just fine.
> 
> Also the ACPI objects have some differences between Dell's and Lenovo's,
> so make those ACPI infos no longer hardcoded.
> 
> BugLink: https://bugs.launchpad.net/bugs/1827961
> Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
> Acked-by: Hayes Wang <hayeswang@realtek.com>
> Signed-off-by: David S. Miller <davem@davemloft.net>
> (cherry picked from commit 9647722befbedcd6735e00655ffec392c05f0c56 linux-next)
> Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
> ---
>  drivers/net/usb/cdc_ether.c |  7 +++++
>  drivers/net/usb/r8152.c     | 58 +++++++++++++++++++++++++------------
>  2 files changed, 46 insertions(+), 19 deletions(-)
> 
> diff --git a/drivers/net/usb/cdc_ether.c b/drivers/net/usb/cdc_ether.c
> index fe630438f67b..0cdb2ce47645 100644
> --- a/drivers/net/usb/cdc_ether.c
> +++ b/drivers/net/usb/cdc_ether.c
> @@ -766,6 +766,13 @@ static const struct usb_device_id	products[] = {
>  	.driver_info = 0,
>  },
>  
> +/* ThinkPad Thunderbolt 3 Dock Gen 2 (based on Realtek RTL8153) */
> +{
> +	USB_DEVICE_AND_INTERFACE_INFO(LENOVO_VENDOR_ID, 0x3082, USB_CLASS_COMM,
> +			USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
> +	.driver_info = 0,
> +},
> +
>  /* Lenovo Thinkpad USB 3.0 Ethernet Adapters (based on Realtek RTL8153) */
>  {
>  	USB_DEVICE_AND_INTERFACE_INFO(LENOVO_VENDOR_ID, 0x7205, USB_CLASS_COMM,
> diff --git a/drivers/net/usb/r8152.c b/drivers/net/usb/r8152.c
> index d4a95b50bda6..014655ca37f2 100644
> --- a/drivers/net/usb/r8152.c
> +++ b/drivers/net/usb/r8152.c
> @@ -622,6 +622,7 @@ enum rtl8152_flags {
>  	SCHEDULE_TASKLET,
>  	GREEN_ETHERNET,
>  	DELL_TB_RX_AGG_BUG,
> +	LENOVO_MACPASSTHRU,
>  };
>  
>  /* Define these values to match your device */
> @@ -1222,38 +1223,52 @@ static int vendor_mac_passthru_addr_read(struct r8152 *tp, struct sockaddr *sa)
>  	int ret = -EINVAL;
>  	u32 ocp_data;
>  	unsigned char buf[6];
> -
> -	/* test for -AD variant of RTL8153 */
> -	ocp_data = ocp_read_word(tp, MCU_TYPE_USB, USB_MISC_0);
> -	if ((ocp_data & AD_MASK) == 0x1000) {
> -		/* test for MAC address pass-through bit */
> -		ocp_data = ocp_read_byte(tp, MCU_TYPE_USB, EFUSE);
> -		if ((ocp_data & PASS_THRU_MASK) != 1) {
> -			netif_dbg(tp, probe, tp->netdev,
> -				  "No efuse for RTL8153-AD MAC pass through\n");
> -			return -ENODEV;
> -		}
> +	char *mac_obj_name;
> +	acpi_object_type mac_obj_type;
> +	int mac_strlen;
> +
> +	if (test_bit(LENOVO_MACPASSTHRU, &tp->flags)) {
> +		mac_obj_name = "\\MACA";
> +		mac_obj_type = ACPI_TYPE_STRING;
> +		mac_strlen = 0x16;
>  	} else {
> -		/* test for RTL8153-BND and RTL8153-BD */
> -		ocp_data = ocp_read_byte(tp, MCU_TYPE_USB, USB_MISC_1);
> -		if ((ocp_data & BND_MASK) == 0 && (ocp_data & BD_MASK) == 0) {
> -			netif_dbg(tp, probe, tp->netdev,
> -				  "Invalid variant for MAC pass through\n");
> -			return -ENODEV;
> +		/* test for -AD variant of RTL8153 */
> +		ocp_data = ocp_read_word(tp, MCU_TYPE_USB, USB_MISC_0);
> +		if ((ocp_data & AD_MASK) == 0x1000) {
> +			/* test for MAC address pass-through bit */
> +			ocp_data = ocp_read_byte(tp, MCU_TYPE_USB, EFUSE);
> +			if ((ocp_data & PASS_THRU_MASK) != 1) {
> +				netif_dbg(tp, probe, tp->netdev,
> +						"No efuse for RTL8153-AD MAC pass through\n");
> +				return -ENODEV;
> +			}
> +		} else {
> +			/* test for RTL8153-BND and RTL8153-BD */
> +			ocp_data = ocp_read_byte(tp, MCU_TYPE_USB, USB_MISC_1);
> +			if ((ocp_data & BND_MASK) == 0 && (ocp_data & BD_MASK) == 0) {
> +				netif_dbg(tp, probe, tp->netdev,
> +						"Invalid variant for MAC pass through\n");
> +				return -ENODEV;
> +			}
>  		}
> +
> +		mac_obj_name = "\\_SB.AMAC";
> +		mac_obj_type = ACPI_TYPE_BUFFER;
> +		mac_strlen = 0x17;
>  	}
>  
>  	/* returns _AUXMAC_#AABBCCDDEEFF# */
> -	status = acpi_evaluate_object(NULL, "\\_SB.AMAC", NULL, &buffer);
> +	status = acpi_evaluate_object(NULL, mac_obj_name, NULL, &buffer);
>  	obj = (union acpi_object *)buffer.pointer;
>  	if (!ACPI_SUCCESS(status))
>  		return -ENODEV;
> -	if (obj->type != ACPI_TYPE_BUFFER || obj->string.length != 0x17) {
> +	if (obj->type != mac_obj_type || obj->string.length != mac_strlen) {
>  		netif_warn(tp, probe, tp->netdev,
>  			   "Invalid buffer for pass-thru MAC addr: (%d, %d)\n",
>  			   obj->type, obj->string.length);
>  		goto amacout;
>  	}
> +
>  	if (strncmp(obj->string.pointer, "_AUXMAC_#", 9) != 0 ||
>  	    strncmp(obj->string.pointer + 0x15, "#", 1) != 0) {
>  		netif_warn(tp, probe, tp->netdev,
> @@ -5632,6 +5647,10 @@ static int rtl8152_probe(struct usb_interface *intf,
>  		netdev->hw_features &= ~NETIF_F_RXCSUM;
>  	}
>  
> +	if (le16_to_cpu(udev->descriptor.idVendor) == VENDOR_ID_LENOVO &&
> +	    le16_to_cpu(udev->descriptor.idProduct) == 0x3082)
> +		set_bit(LENOVO_MACPASSTHRU, &tp->flags);
> +
>  	if (le16_to_cpu(udev->descriptor.bcdDevice) == 0x3011 && udev->serial &&
>  	    (!strcmp(udev->serial, "000001000000") || !strcmp(udev->serial, "000002000000"))) {
>  		dev_info(&udev->dev, "Dell TB16 Dock, disable RX aggregation");
> @@ -5752,6 +5771,7 @@ static const struct usb_device_id rtl8152_table[] = {
>  	{REALTEK_USB_DEVICE(VENDOR_ID_LENOVO,  0x304f)},
>  	{REALTEK_USB_DEVICE(VENDOR_ID_LENOVO,  0x3062)},
>  	{REALTEK_USB_DEVICE(VENDOR_ID_LENOVO,  0x3069)},
> +	{REALTEK_USB_DEVICE(VENDOR_ID_LENOVO,  0x3082)},
>  	{REALTEK_USB_DEVICE(VENDOR_ID_LENOVO,  0x7205)},
>  	{REALTEK_USB_DEVICE(VENDOR_ID_LENOVO,  0x720c)},
>  	{REALTEK_USB_DEVICE(VENDOR_ID_LENOVO,  0x7214)},
> -- 
> 2.17.1
> 
> 
> -- 
> kernel-team mailing list
> kernel-team@lists.ubuntu.com
> https://lists.ubuntu.com/mailman/listinfo/kernel-team

Patch
diff mbox series

diff --git a/drivers/net/usb/cdc_ether.c b/drivers/net/usb/cdc_ether.c
index fe630438f67b..0cdb2ce47645 100644
--- a/drivers/net/usb/cdc_ether.c
+++ b/drivers/net/usb/cdc_ether.c
@@ -766,6 +766,13 @@  static const struct usb_device_id	products[] = {
 	.driver_info = 0,
 },
 
+/* ThinkPad Thunderbolt 3 Dock Gen 2 (based on Realtek RTL8153) */
+{
+	USB_DEVICE_AND_INTERFACE_INFO(LENOVO_VENDOR_ID, 0x3082, USB_CLASS_COMM,
+			USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
+	.driver_info = 0,
+},
+
 /* Lenovo Thinkpad USB 3.0 Ethernet Adapters (based on Realtek RTL8153) */
 {
 	USB_DEVICE_AND_INTERFACE_INFO(LENOVO_VENDOR_ID, 0x7205, USB_CLASS_COMM,
diff --git a/drivers/net/usb/r8152.c b/drivers/net/usb/r8152.c
index d4a95b50bda6..014655ca37f2 100644
--- a/drivers/net/usb/r8152.c
+++ b/drivers/net/usb/r8152.c
@@ -622,6 +622,7 @@  enum rtl8152_flags {
 	SCHEDULE_TASKLET,
 	GREEN_ETHERNET,
 	DELL_TB_RX_AGG_BUG,
+	LENOVO_MACPASSTHRU,
 };
 
 /* Define these values to match your device */
@@ -1222,38 +1223,52 @@  static int vendor_mac_passthru_addr_read(struct r8152 *tp, struct sockaddr *sa)
 	int ret = -EINVAL;
 	u32 ocp_data;
 	unsigned char buf[6];
-
-	/* test for -AD variant of RTL8153 */
-	ocp_data = ocp_read_word(tp, MCU_TYPE_USB, USB_MISC_0);
-	if ((ocp_data & AD_MASK) == 0x1000) {
-		/* test for MAC address pass-through bit */
-		ocp_data = ocp_read_byte(tp, MCU_TYPE_USB, EFUSE);
-		if ((ocp_data & PASS_THRU_MASK) != 1) {
-			netif_dbg(tp, probe, tp->netdev,
-				  "No efuse for RTL8153-AD MAC pass through\n");
-			return -ENODEV;
-		}
+	char *mac_obj_name;
+	acpi_object_type mac_obj_type;
+	int mac_strlen;
+
+	if (test_bit(LENOVO_MACPASSTHRU, &tp->flags)) {
+		mac_obj_name = "\\MACA";
+		mac_obj_type = ACPI_TYPE_STRING;
+		mac_strlen = 0x16;
 	} else {
-		/* test for RTL8153-BND and RTL8153-BD */
-		ocp_data = ocp_read_byte(tp, MCU_TYPE_USB, USB_MISC_1);
-		if ((ocp_data & BND_MASK) == 0 && (ocp_data & BD_MASK) == 0) {
-			netif_dbg(tp, probe, tp->netdev,
-				  "Invalid variant for MAC pass through\n");
-			return -ENODEV;
+		/* test for -AD variant of RTL8153 */
+		ocp_data = ocp_read_word(tp, MCU_TYPE_USB, USB_MISC_0);
+		if ((ocp_data & AD_MASK) == 0x1000) {
+			/* test for MAC address pass-through bit */
+			ocp_data = ocp_read_byte(tp, MCU_TYPE_USB, EFUSE);
+			if ((ocp_data & PASS_THRU_MASK) != 1) {
+				netif_dbg(tp, probe, tp->netdev,
+						"No efuse for RTL8153-AD MAC pass through\n");
+				return -ENODEV;
+			}
+		} else {
+			/* test for RTL8153-BND and RTL8153-BD */
+			ocp_data = ocp_read_byte(tp, MCU_TYPE_USB, USB_MISC_1);
+			if ((ocp_data & BND_MASK) == 0 && (ocp_data & BD_MASK) == 0) {
+				netif_dbg(tp, probe, tp->netdev,
+						"Invalid variant for MAC pass through\n");
+				return -ENODEV;
+			}
 		}
+
+		mac_obj_name = "\\_SB.AMAC";
+		mac_obj_type = ACPI_TYPE_BUFFER;
+		mac_strlen = 0x17;
 	}
 
 	/* returns _AUXMAC_#AABBCCDDEEFF# */
-	status = acpi_evaluate_object(NULL, "\\_SB.AMAC", NULL, &buffer);
+	status = acpi_evaluate_object(NULL, mac_obj_name, NULL, &buffer);
 	obj = (union acpi_object *)buffer.pointer;
 	if (!ACPI_SUCCESS(status))
 		return -ENODEV;
-	if (obj->type != ACPI_TYPE_BUFFER || obj->string.length != 0x17) {
+	if (obj->type != mac_obj_type || obj->string.length != mac_strlen) {
 		netif_warn(tp, probe, tp->netdev,
 			   "Invalid buffer for pass-thru MAC addr: (%d, %d)\n",
 			   obj->type, obj->string.length);
 		goto amacout;
 	}
+
 	if (strncmp(obj->string.pointer, "_AUXMAC_#", 9) != 0 ||
 	    strncmp(obj->string.pointer + 0x15, "#", 1) != 0) {
 		netif_warn(tp, probe, tp->netdev,
@@ -5632,6 +5647,10 @@  static int rtl8152_probe(struct usb_interface *intf,
 		netdev->hw_features &= ~NETIF_F_RXCSUM;
 	}
 
+	if (le16_to_cpu(udev->descriptor.idVendor) == VENDOR_ID_LENOVO &&
+	    le16_to_cpu(udev->descriptor.idProduct) == 0x3082)
+		set_bit(LENOVO_MACPASSTHRU, &tp->flags);
+
 	if (le16_to_cpu(udev->descriptor.bcdDevice) == 0x3011 && udev->serial &&
 	    (!strcmp(udev->serial, "000001000000") || !strcmp(udev->serial, "000002000000"))) {
 		dev_info(&udev->dev, "Dell TB16 Dock, disable RX aggregation");
@@ -5752,6 +5771,7 @@  static const struct usb_device_id rtl8152_table[] = {
 	{REALTEK_USB_DEVICE(VENDOR_ID_LENOVO,  0x304f)},
 	{REALTEK_USB_DEVICE(VENDOR_ID_LENOVO,  0x3062)},
 	{REALTEK_USB_DEVICE(VENDOR_ID_LENOVO,  0x3069)},
+	{REALTEK_USB_DEVICE(VENDOR_ID_LENOVO,  0x3082)},
 	{REALTEK_USB_DEVICE(VENDOR_ID_LENOVO,  0x7205)},
 	{REALTEK_USB_DEVICE(VENDOR_ID_LENOVO,  0x720c)},
 	{REALTEK_USB_DEVICE(VENDOR_ID_LENOVO,  0x7214)},