On Wed, Jan 06, 2021 at 12:56:08PM +0100, Marek Behún wrote: > I found out that on Turris MOX I am able to route 2.5gbps (at MTU 1500) > with XDP. But when not using XDP, when the packets go via kernel's > stack, MOX is able to route less than 1gbps (cca 800mbps, at MTU > 1500, and the CPU is at 100%).
Read this: https://patchwork.ozlabs.org/project/netdev/patch/73223229-6bc0-2647-6952-975961811...@gmail.com/ Disable GRO on the DSA interfaces and you'll be just fine even with IP forwarding done by the network stack. You don't _need_ XDP for this.
