The D-Link DUB-E250 is an RTL8156 based 2.5G Ethernet controller.

Add the vendor and product ID values to the driver. This makes Ethernet
work with the adapter.

Signed-off-by: Antonio Napolitano <anton@polit.no>
---
 drivers/net/usb/r8152.c   | 1 +
 include/linux/usb/r8152.h | 1 +
 2 files changed, 2 insertions(+)

diff --git a/drivers/net/usb/r8152.c b/drivers/net/usb/r8152.c
index bb234cf0cea0..332c853ca99b 100644
--- a/drivers/net/usb/r8152.c
+++ b/drivers/net/usb/r8152.c
@@ -9832,6 +9832,7 @@ static const struct usb_device_id rtl8152_table[] = {
 	{ USB_DEVICE(VENDOR_ID_LINKSYS, 0x0041) },
 	{ USB_DEVICE(VENDOR_ID_NVIDIA,  0x09ff) },
 	{ USB_DEVICE(VENDOR_ID_TPLINK,  0x0601) },
+	{ USB_DEVICE(VENDOR_ID_DLINK,   0xb301) },
 	{}
 };
 
diff --git a/include/linux/usb/r8152.h b/include/linux/usb/r8152.h
index 20d88b1defc3..287e9d83fb8b 100644
--- a/include/linux/usb/r8152.h
+++ b/include/linux/usb/r8152.h
@@ -29,6 +29,7 @@
 #define VENDOR_ID_LINKSYS		0x13b1
 #define VENDOR_ID_NVIDIA		0x0955
 #define VENDOR_ID_TPLINK		0x2357
+#define VENDOR_ID_DLINK			0x2001
 
 #if IS_REACHABLE(CONFIG_USB_RTL8152)
 extern u8 rtl8152_get_version(struct usb_interface *intf);
-- 
2.42.0

Hello:

This patch was applied to netdev/net-next.git (main)
by Jakub Kicinski <kuba@kernel.org>:

On Sat, 26 Aug 2023 01:05:50 +0200 you wrote:
> The D-Link DUB-E250 is an RTL8156 based 2.5G Ethernet controller.
> 
> Add the vendor and product ID values to the driver. This makes Ethernet
> work with the adapter.
> 
> Signed-off-by: Antonio Napolitano <anton@polit.no>
> 
> [...]

Here is the summary with links:
  - [net-next] r8152: add vendor/device ID pair for D-Link DUB-E250
    https://git.kernel.org/netdev/net-next/c/72f93a3136ee

You are awesome, thank you!
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