Yeah, but the reason is that you are trading latency for throughput.
There is only one queue, so when the interface is saturated you will not
get good latency anyway (since latency-sensitive packets will get
head-of-line blocked). But when activity is sparse you can good latency
if there is no coalescing. So I think coalescing should only be used
when there is a lot of traffic. Hence why I only adjusted the settings
once I implemented DIM. I think you should be able to implement it by
calling net_dim from axienet_dma_rx_cb, but it will not be as efficient
without NAPI.

Actually, if you are looking into improving performance, I think lack of
NAPI is probably the biggest limitation with the dmaengine backend.

It latency is the goal, especially for mixing high and low priority
traffic, having BQL implemented is also important. Does this driver
have that?

	Andrew