Re: [RFC PATCH net-next 0/3] net: batched receive in GRO path

[Edward Cree]

On 10/07/2019 18:39, Eric Dumazet wrote:
> Holding a small packet in the list up to the point we call busy_poll_stop()
> will basically make busypoll non working anymore.
>
> napi_complete_done() has special behavior when busy polling is active.
Yep, I get it now, sorry for being dumb :)
Essentially we're saying that things coalesced by GRO are 'bulk' traffic and
 can wait around, but the rest is the stuff we're polling for for low latency.
I'm putting a gro_normal_list() call after the trace_napi_poll() in
 napi_busy_loop() and testing that, let's see how it goes...