Re: [PATCH net 00/15] netpoll: avoid capture effects for NAPI drivers

[Song Liu]

> On Sep 24, 2018, at 2:05 PM, Eric Dumazet <eduma...@google.com> wrote:
> 
>> 
>> Interesting, maybe a bnxt specific issue.
>> 
>> It seems their model is to process TX/RX notification in the same queue,
>> they throw away RX events if budget == 0
>> 
>> It means commit e7b9569102995ebc26821789628eef45bd9840d8 is wrong and
>> must be reverted.
>> 
>> Otherwise, we have a possibility of blocking a queue under netpoll pressure.
> 
> Hmm, actually a revert might not be enough, since code at lines 2030-2031
> would fire and we might not call napi_complete_done() anyway.
> 
> Unfortunately this driver logic is quite complex.
> 
> Could you test on other NIC eventually ?
> 

It actually runs OK on ixgbe. 

@Michael, could you please help us with this? 

Thanks,
Song