Hi all, I'm trying to configure Layer 1 attributes (speed, duplex, and autonegotiation) for Intel i225 interfaces in both kernel and DPDK modes, and I've run into some issues. In kernel driver mode, I normally use: "ethtool -s eth5 speed 100 duplex half autoneg off". However, this results in the kernel message: "igc 0000:04:00.0 eth5: Force mode currently not supported".
When the interface is bound to DPDK and connected to an OVS bridge, I configure it like this: ovs-vsctl set Interface 1.extra2 \ type=dpdk \ options:dpdk-devargs=0000:04:00.0 \ options:dpdk-speed=100 \ options:dpdk-autoneg=false \ options:dpdk-duplex=half This should pass the speed/autoneg/duplex settings to the igc DPDK driver via devargs. However, it appears these options are not applied - the interface continues to negotiate its settings as usual, and I can't find any code in the igc DPDK driver that processes these devargs parameters. Is support for forced speed/duplex/autoneg available at all for i225 in DPDK (or even kernel) mode? Or is this a hardware limitation? Any insight, documentation pointers, or confirmation of support status especially in case of DPDK mode would be greatly appreciated. Best regards, Renata Saiakhova SW ARCHITECT renata.saiakh...@ekinops.com<mailto:renata.saiakh...@ekinops.com%20> Tel: +32 16 799 970 [https://www.ekinops.com/images/public-communication/mail-signature/logo_96dpi.gif]<www.ekinops.com> [https://www.ekinops.com/images/public-communication/mail-signature/current.png]<https://www.ekinops.com/news/mailbanner>
