On Wed, Aug 08, 2018 at 05:27:05PM +0200, Marek Behún wrote: > For some reason on Armada 3720 boards (EspressoBin and Turris Mox) the > networking driver behaves weirdly when using napi_gro_receive. > > For example downloading a big file from a local network (low ping) is > fast, but when downloading from a remote server (higher ping), the > download speed is at first high but drops rapidly to almost nothing or > absolutely nothing. > > This is fixed when using netif_receive_skb instead of napi_gro_receive.
Before doing this, we should really understand what is going on. It is probably just a driver bug which needs fixing. And GRO should be good for performance, so we do want to use it, if possible. Andrew