From: Paolo Abeni Date: Thu, 9 Apr 2026 10:16:47 +0000 (+0200) Subject: Merge branch 'r8152-add-support-for-the-rtl8157-5gbit-usb-ethernet-chip' X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=9700282a7ec721e285771d995ccfe33845e776dc;p=thirdparty%2Fkernel%2Flinux.git Merge branch 'r8152-add-support-for-the-rtl8157-5gbit-usb-ethernet-chip' Birger Koblitz says: ==================== r8152: Add support for the RTL8157 5Gbit USB Ethernet chip Add support for the RTL8157, which is a 5GBit USB-Ethernet adapter chip in the RTL815x family of chips. The RTL8157 uses a different frame descriptor format, and different SRAM/ADV access methods, plus offers 5GBit/s Ethernet, so support for these features is added in addition to chip initialization and configuration. The module was tested with an OEM RTL8157 USB adapter: [25758.328238] usb 4-1: new SuperSpeed Plus Gen 2x1 USB device number 2 using xhci_hcd [25758.345565] usb 4-1: New USB device found, idVendor=0bda, idProduct=8157, bcdDevice=30.00 [25758.345585] usb 4-1: New USB device strings: Mfr=1, Product=2, SerialNumber=7 [25758.345593] usb 4-1: Product: USB 10/100/1G/2.5G/5G LAN [25758.345599] usb 4-1: Manufacturer: Realtek [25758.345605] usb 4-1: SerialNumber: 000300E04C68xxxx [25758.534241] r8152-cfgselector 4-1: reset SuperSpeed Plus Gen 2x1 USB device number 2 using xhci_hcd [25758.603511] r8152 4-1:1.0: skip request firmware [25758.653351] r8152 4-1:1.0 eth0: v1.12.13 [25758.689271] r8152 4-1:1.0 enx00e04c68xxxx: renamed from eth0 [25763.271682] r8152 4-1:1.0 enx00e04c68xxxx: carrier on The RTL8157 adapter was tested against an AQC107 PCIe-card supporting 10GBit/s and an RTL8126 5Gbit PCIe-card supporting 5GBit/s for performance, link speed and EEE negotiation. Using USB3.2 Gen 1 with the RTL8157 USB adapter and running iperf3 against the AQC107 PCIe card resulted in 3.47 Gbits/sec, whereas using USB3.2 Gen2 resulted in 4.70 Gbits/sec, speeds against the RTL8126-card were the same. As the code integrates the RTL8157-specific code with existing RTL8156 code in order to improve code maintainability (instead of adding RTL8157-specific functions duplicaing most of the RTL8156 code), regression tests were done with an Edimax EU-4307 V1.0 USB-Ethernet adapter with RTL8156. The code is based on the out-of-tree r8152 driver published by Realtek under the GPL. This patch is on top of linux-next as the code re-uses the 2.5 Gbit EEE recently added in r8152.c. Signed-off-by: Birger Koblitz ==================== Link: https://patch.msgid.link/20260404-rtl8157_next-v7-0-039121318f23@birger-koblitz.de Signed-off-by: Paolo Abeni --- 9700282a7ec721e285771d995ccfe33845e776dc