On 4/7/2023 1:59 PM, Haiyang Zhang wrote: > During probe, get the hardware-allowed max MTU by querying the device > configuration. Users can select MTU up to the device limit. > When XDP is in use, limit MTU settings so the buffer size is within > one page. > Also, to prevent changing MTU fails, and leaves the NIC in a bad state, > pre-allocate all buffers before starting the change. So in low memory > condition, it will return error, without affecting the NIC. > What happens if XDP gets enabled after MTU larger than PAGE_SIZE is set? Will XDP fail to enable in that case? Thanks, Jake
