Re: [PATCH net] ixgbe: check return value of napi_complete_done()

On 09/21/2018 07:55 AM, Alexei Starovoitov wrote:

should we remove ndo_poll_controller then?
My understanding that the patch helps by not letting
drivers do napi_schedule() for all queues into this_cpu, right?
But most of the drivers do exactly that in their ndo_poll_controller
implementations. Means most of the drivers will experience
this nasty behavior.

Some legacy drivers do not use NAPI yet, but provide ndo_poll_controller()

I believe users caring about system behavior with multi queue NIC are
all using NAPI enabled drivers, so this should be fine.